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Linux/drivers/platform/x86/sony-laptop.c

  1 /*
  2  * ACPI Sony Notebook Control Driver (SNC and SPIC)
  3  *
  4  * Copyright (C) 2004-2005 Stelian Pop <stelian@popies.net>
  5  * Copyright (C) 2007-2009 Mattia Dongili <malattia@linux.it>
  6  *
  7  * Parts of this driver inspired from asus_acpi.c and ibm_acpi.c
  8  * which are copyrighted by their respective authors.
  9  *
 10  * The SNY6001 driver part is based on the sonypi driver which includes
 11  * material from:
 12  *
 13  * Copyright (C) 2001-2005 Stelian Pop <stelian@popies.net>
 14  *
 15  * Copyright (C) 2005 Narayanan R S <nars@kadamba.org>
 16  *
 17  * Copyright (C) 2001-2002 AlcĂ´ve <www.alcove.com>
 18  *
 19  * Copyright (C) 2001 Michael Ashley <m.ashley@unsw.edu.au>
 20  *
 21  * Copyright (C) 2001 Junichi Morita <jun1m@mars.dti.ne.jp>
 22  *
 23  * Copyright (C) 2000 Takaya Kinjo <t-kinjo@tc4.so-net.ne.jp>
 24  *
 25  * Copyright (C) 2000 Andrew Tridgell <tridge@valinux.com>
 26  *
 27  * Earlier work by Werner Almesberger, Paul `Rusty' Russell and Paul Mackerras.
 28  *
 29  * This program is free software; you can redistribute it and/or modify
 30  * it under the terms of the GNU General Public License as published by
 31  * the Free Software Foundation; either version 2 of the License, or
 32  * (at your option) any later version.
 33  *
 34  * This program is distributed in the hope that it will be useful,
 35  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 36  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 37  * GNU General Public License for more details.
 38  *
 39  * You should have received a copy of the GNU General Public License
 40  * along with this program; if not, write to the Free Software
 41  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 42  *
 43  */
 44 
 45 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 46 
 47 #include <linux/kernel.h>
 48 #include <linux/module.h>
 49 #include <linux/moduleparam.h>
 50 #include <linux/init.h>
 51 #include <linux/types.h>
 52 #include <linux/backlight.h>
 53 #include <linux/platform_device.h>
 54 #include <linux/err.h>
 55 #include <linux/dmi.h>
 56 #include <linux/pci.h>
 57 #include <linux/interrupt.h>
 58 #include <linux/delay.h>
 59 #include <linux/input.h>
 60 #include <linux/kfifo.h>
 61 #include <linux/workqueue.h>
 62 #include <linux/acpi.h>
 63 #include <linux/slab.h>
 64 #include <linux/sonypi.h>
 65 #include <linux/sony-laptop.h>
 66 #include <linux/rfkill.h>
 67 #ifdef CONFIG_SONYPI_COMPAT
 68 #include <linux/poll.h>
 69 #include <linux/miscdevice.h>
 70 #endif
 71 #include <asm/uaccess.h>
 72 #include <acpi/video.h>
 73 
 74 #define dprintk(fmt, ...)                       \
 75 do {                                            \
 76         if (debug)                              \
 77                 pr_warn(fmt, ##__VA_ARGS__);    \
 78 } while (0)
 79 
 80 #define SONY_NC_CLASS           "sony-nc"
 81 #define SONY_NC_HID             "SNY5001"
 82 #define SONY_NC_DRIVER_NAME     "Sony Notebook Control Driver"
 83 
 84 #define SONY_PIC_CLASS          "sony-pic"
 85 #define SONY_PIC_HID            "SNY6001"
 86 #define SONY_PIC_DRIVER_NAME    "Sony Programmable IO Control Driver"
 87 
 88 MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
 89 MODULE_DESCRIPTION("Sony laptop extras driver (SPIC and SNC ACPI device)");
 90 MODULE_LICENSE("GPL");
 91 
 92 static int debug;
 93 module_param(debug, int, 0);
 94 MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
 95                  "the development of this driver");
 96 
 97 static int no_spic;             /* = 0 */
 98 module_param(no_spic, int, 0444);
 99 MODULE_PARM_DESC(no_spic,
100                  "set this if you don't want to enable the SPIC device");
101 
102 static int compat;              /* = 0 */
103 module_param(compat, int, 0444);
104 MODULE_PARM_DESC(compat,
105                  "set this if you want to enable backward compatibility mode");
106 
107 static unsigned long mask = 0xffffffff;
108 module_param(mask, ulong, 0644);
109 MODULE_PARM_DESC(mask,
110                  "set this to the mask of event you want to enable (see doc)");
111 
112 static int camera;              /* = 0 */
113 module_param(camera, int, 0444);
114 MODULE_PARM_DESC(camera,
115                  "set this to 1 to enable Motion Eye camera controls "
116                  "(only use it if you have a C1VE or C1VN model)");
117 
118 #ifdef CONFIG_SONYPI_COMPAT
119 static int minor = -1;
120 module_param(minor, int, 0);
121 MODULE_PARM_DESC(minor,
122                  "minor number of the misc device for the SPIC compatibility code, "
123                  "default is -1 (automatic)");
124 #endif
125 
126 static int kbd_backlight = -1;
127 module_param(kbd_backlight, int, 0444);
128 MODULE_PARM_DESC(kbd_backlight,
129                  "set this to 0 to disable keyboard backlight, "
130                  "1 to enable it with automatic control and 2 to have it always "
131                  "on (default: no change from current value)");
132 
133 static int kbd_backlight_timeout = -1;
134 module_param(kbd_backlight_timeout, int, 0444);
135 MODULE_PARM_DESC(kbd_backlight_timeout,
136                  "meaningful values vary from 0 to 3 and their meaning depends "
137                  "on the model (default: no change from current value)");
138 
139 #ifdef CONFIG_PM_SLEEP
140 static void sony_nc_thermal_resume(void);
141 #endif
142 static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
143                 unsigned int handle);
144 static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
145                 unsigned int handle);
146 
147 static int sony_nc_battery_care_setup(struct platform_device *pd,
148                 unsigned int handle);
149 static void sony_nc_battery_care_cleanup(struct platform_device *pd);
150 
151 static int sony_nc_thermal_setup(struct platform_device *pd);
152 static void sony_nc_thermal_cleanup(struct platform_device *pd);
153 
154 static int sony_nc_lid_resume_setup(struct platform_device *pd,
155                                     unsigned int handle);
156 static void sony_nc_lid_resume_cleanup(struct platform_device *pd);
157 
158 static int sony_nc_gfx_switch_setup(struct platform_device *pd,
159                 unsigned int handle);
160 static void sony_nc_gfx_switch_cleanup(struct platform_device *pd);
161 static int __sony_nc_gfx_switch_status_get(void);
162 
163 static int sony_nc_highspeed_charging_setup(struct platform_device *pd);
164 static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd);
165 
166 static int sony_nc_lowbatt_setup(struct platform_device *pd);
167 static void sony_nc_lowbatt_cleanup(struct platform_device *pd);
168 
169 static int sony_nc_fanspeed_setup(struct platform_device *pd);
170 static void sony_nc_fanspeed_cleanup(struct platform_device *pd);
171 
172 static int sony_nc_usb_charge_setup(struct platform_device *pd);
173 static void sony_nc_usb_charge_cleanup(struct platform_device *pd);
174 
175 static int sony_nc_panelid_setup(struct platform_device *pd);
176 static void sony_nc_panelid_cleanup(struct platform_device *pd);
177 
178 static int sony_nc_smart_conn_setup(struct platform_device *pd);
179 static void sony_nc_smart_conn_cleanup(struct platform_device *pd);
180 
181 static int sony_nc_touchpad_setup(struct platform_device *pd,
182                                   unsigned int handle);
183 static void sony_nc_touchpad_cleanup(struct platform_device *pd);
184 
185 enum sony_nc_rfkill {
186         SONY_WIFI,
187         SONY_BLUETOOTH,
188         SONY_WWAN,
189         SONY_WIMAX,
190         N_SONY_RFKILL,
191 };
192 
193 static int sony_rfkill_handle;
194 static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL];
195 static int sony_rfkill_address[N_SONY_RFKILL] = {0x300, 0x500, 0x700, 0x900};
196 static int sony_nc_rfkill_setup(struct acpi_device *device,
197                 unsigned int handle);
198 static void sony_nc_rfkill_cleanup(void);
199 static void sony_nc_rfkill_update(void);
200 
201 /*********** Input Devices ***********/
202 
203 #define SONY_LAPTOP_BUF_SIZE    128
204 struct sony_laptop_input_s {
205         atomic_t                users;
206         struct input_dev        *jog_dev;
207         struct input_dev        *key_dev;
208         struct kfifo            fifo;
209         spinlock_t              fifo_lock;
210         struct timer_list       release_key_timer;
211 };
212 
213 static struct sony_laptop_input_s sony_laptop_input = {
214         .users = ATOMIC_INIT(0),
215 };
216 
217 struct sony_laptop_keypress {
218         struct input_dev *dev;
219         int key;
220 };
221 
222 /* Correspondance table between sonypi events
223  * and input layer indexes in the keymap
224  */
225 static int sony_laptop_input_index[] = {
226         -1,     /*  0 no event */
227         -1,     /*  1 SONYPI_EVENT_JOGDIAL_DOWN */
228         -1,     /*  2 SONYPI_EVENT_JOGDIAL_UP */
229         -1,     /*  3 SONYPI_EVENT_JOGDIAL_DOWN_PRESSED */
230         -1,     /*  4 SONYPI_EVENT_JOGDIAL_UP_PRESSED */
231         -1,     /*  5 SONYPI_EVENT_JOGDIAL_PRESSED */
232         -1,     /*  6 SONYPI_EVENT_JOGDIAL_RELEASED */
233          0,     /*  7 SONYPI_EVENT_CAPTURE_PRESSED */
234          1,     /*  8 SONYPI_EVENT_CAPTURE_RELEASED */
235          2,     /*  9 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
236          3,     /* 10 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
237          4,     /* 11 SONYPI_EVENT_FNKEY_ESC */
238          5,     /* 12 SONYPI_EVENT_FNKEY_F1 */
239          6,     /* 13 SONYPI_EVENT_FNKEY_F2 */
240          7,     /* 14 SONYPI_EVENT_FNKEY_F3 */
241          8,     /* 15 SONYPI_EVENT_FNKEY_F4 */
242          9,     /* 16 SONYPI_EVENT_FNKEY_F5 */
243         10,     /* 17 SONYPI_EVENT_FNKEY_F6 */
244         11,     /* 18 SONYPI_EVENT_FNKEY_F7 */
245         12,     /* 19 SONYPI_EVENT_FNKEY_F8 */
246         13,     /* 20 SONYPI_EVENT_FNKEY_F9 */
247         14,     /* 21 SONYPI_EVENT_FNKEY_F10 */
248         15,     /* 22 SONYPI_EVENT_FNKEY_F11 */
249         16,     /* 23 SONYPI_EVENT_FNKEY_F12 */
250         17,     /* 24 SONYPI_EVENT_FNKEY_1 */
251         18,     /* 25 SONYPI_EVENT_FNKEY_2 */
252         19,     /* 26 SONYPI_EVENT_FNKEY_D */
253         20,     /* 27 SONYPI_EVENT_FNKEY_E */
254         21,     /* 28 SONYPI_EVENT_FNKEY_F */
255         22,     /* 29 SONYPI_EVENT_FNKEY_S */
256         23,     /* 30 SONYPI_EVENT_FNKEY_B */
257         24,     /* 31 SONYPI_EVENT_BLUETOOTH_PRESSED */
258         25,     /* 32 SONYPI_EVENT_PKEY_P1 */
259         26,     /* 33 SONYPI_EVENT_PKEY_P2 */
260         27,     /* 34 SONYPI_EVENT_PKEY_P3 */
261         28,     /* 35 SONYPI_EVENT_BACK_PRESSED */
262         -1,     /* 36 SONYPI_EVENT_LID_CLOSED */
263         -1,     /* 37 SONYPI_EVENT_LID_OPENED */
264         29,     /* 38 SONYPI_EVENT_BLUETOOTH_ON */
265         30,     /* 39 SONYPI_EVENT_BLUETOOTH_OFF */
266         31,     /* 40 SONYPI_EVENT_HELP_PRESSED */
267         32,     /* 41 SONYPI_EVENT_FNKEY_ONLY */
268         33,     /* 42 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
269         34,     /* 43 SONYPI_EVENT_JOGDIAL_FAST_UP */
270         35,     /* 44 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
271         36,     /* 45 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
272         37,     /* 46 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
273         38,     /* 47 SONYPI_EVENT_JOGDIAL_VFAST_UP */
274         39,     /* 48 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
275         40,     /* 49 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
276         41,     /* 50 SONYPI_EVENT_ZOOM_PRESSED */
277         42,     /* 51 SONYPI_EVENT_THUMBPHRASE_PRESSED */
278         43,     /* 52 SONYPI_EVENT_MEYE_FACE */
279         44,     /* 53 SONYPI_EVENT_MEYE_OPPOSITE */
280         45,     /* 54 SONYPI_EVENT_MEMORYSTICK_INSERT */
281         46,     /* 55 SONYPI_EVENT_MEMORYSTICK_EJECT */
282         -1,     /* 56 SONYPI_EVENT_ANYBUTTON_RELEASED */
283         -1,     /* 57 SONYPI_EVENT_BATTERY_INSERT */
284         -1,     /* 58 SONYPI_EVENT_BATTERY_REMOVE */
285         -1,     /* 59 SONYPI_EVENT_FNKEY_RELEASED */
286         47,     /* 60 SONYPI_EVENT_WIRELESS_ON */
287         48,     /* 61 SONYPI_EVENT_WIRELESS_OFF */
288         49,     /* 62 SONYPI_EVENT_ZOOM_IN_PRESSED */
289         50,     /* 63 SONYPI_EVENT_ZOOM_OUT_PRESSED */
290         51,     /* 64 SONYPI_EVENT_CD_EJECT_PRESSED */
291         52,     /* 65 SONYPI_EVENT_MODEKEY_PRESSED */
292         53,     /* 66 SONYPI_EVENT_PKEY_P4 */
293         54,     /* 67 SONYPI_EVENT_PKEY_P5 */
294         55,     /* 68 SONYPI_EVENT_SETTINGKEY_PRESSED */
295         56,     /* 69 SONYPI_EVENT_VOLUME_INC_PRESSED */
296         57,     /* 70 SONYPI_EVENT_VOLUME_DEC_PRESSED */
297         -1,     /* 71 SONYPI_EVENT_BRIGHTNESS_PRESSED */
298         58,     /* 72 SONYPI_EVENT_MEDIA_PRESSED */
299         59,     /* 72 SONYPI_EVENT_VENDOR_PRESSED */
300 };
301 
302 static int sony_laptop_input_keycode_map[] = {
303         KEY_CAMERA,     /*  0 SONYPI_EVENT_CAPTURE_PRESSED */
304         KEY_RESERVED,   /*  1 SONYPI_EVENT_CAPTURE_RELEASED */
305         KEY_RESERVED,   /*  2 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
306         KEY_RESERVED,   /*  3 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
307         KEY_FN_ESC,     /*  4 SONYPI_EVENT_FNKEY_ESC */
308         KEY_FN_F1,      /*  5 SONYPI_EVENT_FNKEY_F1 */
309         KEY_FN_F2,      /*  6 SONYPI_EVENT_FNKEY_F2 */
310         KEY_FN_F3,      /*  7 SONYPI_EVENT_FNKEY_F3 */
311         KEY_FN_F4,      /*  8 SONYPI_EVENT_FNKEY_F4 */
312         KEY_FN_F5,      /*  9 SONYPI_EVENT_FNKEY_F5 */
313         KEY_FN_F6,      /* 10 SONYPI_EVENT_FNKEY_F6 */
314         KEY_FN_F7,      /* 11 SONYPI_EVENT_FNKEY_F7 */
315         KEY_FN_F8,      /* 12 SONYPI_EVENT_FNKEY_F8 */
316         KEY_FN_F9,      /* 13 SONYPI_EVENT_FNKEY_F9 */
317         KEY_FN_F10,     /* 14 SONYPI_EVENT_FNKEY_F10 */
318         KEY_FN_F11,     /* 15 SONYPI_EVENT_FNKEY_F11 */
319         KEY_FN_F12,     /* 16 SONYPI_EVENT_FNKEY_F12 */
320         KEY_FN_1,       /* 17 SONYPI_EVENT_FNKEY_1 */
321         KEY_FN_2,       /* 18 SONYPI_EVENT_FNKEY_2 */
322         KEY_FN_D,       /* 19 SONYPI_EVENT_FNKEY_D */
323         KEY_FN_E,       /* 20 SONYPI_EVENT_FNKEY_E */
324         KEY_FN_F,       /* 21 SONYPI_EVENT_FNKEY_F */
325         KEY_FN_S,       /* 22 SONYPI_EVENT_FNKEY_S */
326         KEY_FN_B,       /* 23 SONYPI_EVENT_FNKEY_B */
327         KEY_BLUETOOTH,  /* 24 SONYPI_EVENT_BLUETOOTH_PRESSED */
328         KEY_PROG1,      /* 25 SONYPI_EVENT_PKEY_P1 */
329         KEY_PROG2,      /* 26 SONYPI_EVENT_PKEY_P2 */
330         KEY_PROG3,      /* 27 SONYPI_EVENT_PKEY_P3 */
331         KEY_BACK,       /* 28 SONYPI_EVENT_BACK_PRESSED */
332         KEY_BLUETOOTH,  /* 29 SONYPI_EVENT_BLUETOOTH_ON */
333         KEY_BLUETOOTH,  /* 30 SONYPI_EVENT_BLUETOOTH_OFF */
334         KEY_HELP,       /* 31 SONYPI_EVENT_HELP_PRESSED */
335         KEY_FN,         /* 32 SONYPI_EVENT_FNKEY_ONLY */
336         KEY_RESERVED,   /* 33 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
337         KEY_RESERVED,   /* 34 SONYPI_EVENT_JOGDIAL_FAST_UP */
338         KEY_RESERVED,   /* 35 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
339         KEY_RESERVED,   /* 36 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
340         KEY_RESERVED,   /* 37 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
341         KEY_RESERVED,   /* 38 SONYPI_EVENT_JOGDIAL_VFAST_UP */
342         KEY_RESERVED,   /* 39 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
343         KEY_RESERVED,   /* 40 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
344         KEY_ZOOM,       /* 41 SONYPI_EVENT_ZOOM_PRESSED */
345         BTN_THUMB,      /* 42 SONYPI_EVENT_THUMBPHRASE_PRESSED */
346         KEY_RESERVED,   /* 43 SONYPI_EVENT_MEYE_FACE */
347         KEY_RESERVED,   /* 44 SONYPI_EVENT_MEYE_OPPOSITE */
348         KEY_RESERVED,   /* 45 SONYPI_EVENT_MEMORYSTICK_INSERT */
349         KEY_RESERVED,   /* 46 SONYPI_EVENT_MEMORYSTICK_EJECT */
350         KEY_WLAN,       /* 47 SONYPI_EVENT_WIRELESS_ON */
351         KEY_WLAN,       /* 48 SONYPI_EVENT_WIRELESS_OFF */
352         KEY_ZOOMIN,     /* 49 SONYPI_EVENT_ZOOM_IN_PRESSED */
353         KEY_ZOOMOUT,    /* 50 SONYPI_EVENT_ZOOM_OUT_PRESSED */
354         KEY_EJECTCD,    /* 51 SONYPI_EVENT_CD_EJECT_PRESSED */
355         KEY_F13,        /* 52 SONYPI_EVENT_MODEKEY_PRESSED */
356         KEY_PROG4,      /* 53 SONYPI_EVENT_PKEY_P4 */
357         KEY_F14,        /* 54 SONYPI_EVENT_PKEY_P5 */
358         KEY_F15,        /* 55 SONYPI_EVENT_SETTINGKEY_PRESSED */
359         KEY_VOLUMEUP,   /* 56 SONYPI_EVENT_VOLUME_INC_PRESSED */
360         KEY_VOLUMEDOWN, /* 57 SONYPI_EVENT_VOLUME_DEC_PRESSED */
361         KEY_MEDIA,      /* 58 SONYPI_EVENT_MEDIA_PRESSED */
362         KEY_VENDOR,     /* 59 SONYPI_EVENT_VENDOR_PRESSED */
363 };
364 
365 /* release buttons after a short delay if pressed */
366 static void do_sony_laptop_release_key(unsigned long unused)
367 {
368         struct sony_laptop_keypress kp;
369         unsigned long flags;
370 
371         spin_lock_irqsave(&sony_laptop_input.fifo_lock, flags);
372 
373         if (kfifo_out(&sony_laptop_input.fifo,
374                       (unsigned char *)&kp, sizeof(kp)) == sizeof(kp)) {
375                 input_report_key(kp.dev, kp.key, 0);
376                 input_sync(kp.dev);
377         }
378 
379         /* If there is something in the fifo schedule next release. */
380         if (kfifo_len(&sony_laptop_input.fifo) != 0)
381                 mod_timer(&sony_laptop_input.release_key_timer,
382                           jiffies + msecs_to_jiffies(10));
383 
384         spin_unlock_irqrestore(&sony_laptop_input.fifo_lock, flags);
385 }
386 
387 /* forward event to the input subsystem */
388 static void sony_laptop_report_input_event(u8 event)
389 {
390         struct input_dev *jog_dev = sony_laptop_input.jog_dev;
391         struct input_dev *key_dev = sony_laptop_input.key_dev;
392         struct sony_laptop_keypress kp = { NULL };
393         int scancode = -1;
394 
395         if (event == SONYPI_EVENT_FNKEY_RELEASED ||
396                         event == SONYPI_EVENT_ANYBUTTON_RELEASED) {
397                 /* Nothing, not all VAIOs generate this event */
398                 return;
399         }
400 
401         /* report events */
402         switch (event) {
403         /* jog_dev events */
404         case SONYPI_EVENT_JOGDIAL_UP:
405         case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
406                 input_report_rel(jog_dev, REL_WHEEL, 1);
407                 input_sync(jog_dev);
408                 return;
409 
410         case SONYPI_EVENT_JOGDIAL_DOWN:
411         case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
412                 input_report_rel(jog_dev, REL_WHEEL, -1);
413                 input_sync(jog_dev);
414                 return;
415 
416         /* key_dev events */
417         case SONYPI_EVENT_JOGDIAL_PRESSED:
418                 kp.key = BTN_MIDDLE;
419                 kp.dev = jog_dev;
420                 break;
421 
422         default:
423                 if (event >= ARRAY_SIZE(sony_laptop_input_index)) {
424                         dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
425                         break;
426                 }
427                 if ((scancode = sony_laptop_input_index[event]) != -1) {
428                         kp.key = sony_laptop_input_keycode_map[scancode];
429                         if (kp.key != KEY_UNKNOWN)
430                                 kp.dev = key_dev;
431                 }
432                 break;
433         }
434 
435         if (kp.dev) {
436                 /* if we have a scancode we emit it so we can always
437                     remap the key */
438                 if (scancode != -1)
439                         input_event(kp.dev, EV_MSC, MSC_SCAN, scancode);
440                 input_report_key(kp.dev, kp.key, 1);
441                 input_sync(kp.dev);
442 
443                 /* schedule key release */
444                 kfifo_in_locked(&sony_laptop_input.fifo,
445                                 (unsigned char *)&kp, sizeof(kp),
446                                 &sony_laptop_input.fifo_lock);
447                 mod_timer(&sony_laptop_input.release_key_timer,
448                           jiffies + msecs_to_jiffies(10));
449         } else
450                 dprintk("unknown input event %.2x\n", event);
451 }
452 
453 static int sony_laptop_setup_input(struct acpi_device *acpi_device)
454 {
455         struct input_dev *jog_dev;
456         struct input_dev *key_dev;
457         int i;
458         int error;
459 
460         /* don't run again if already initialized */
461         if (atomic_add_return(1, &sony_laptop_input.users) > 1)
462                 return 0;
463 
464         /* kfifo */
465         spin_lock_init(&sony_laptop_input.fifo_lock);
466         error = kfifo_alloc(&sony_laptop_input.fifo,
467                             SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
468         if (error) {
469                 pr_err("kfifo_alloc failed\n");
470                 goto err_dec_users;
471         }
472 
473         setup_timer(&sony_laptop_input.release_key_timer,
474                     do_sony_laptop_release_key, 0);
475 
476         /* input keys */
477         key_dev = input_allocate_device();
478         if (!key_dev) {
479                 error = -ENOMEM;
480                 goto err_free_kfifo;
481         }
482 
483         key_dev->name = "Sony Vaio Keys";
484         key_dev->id.bustype = BUS_ISA;
485         key_dev->id.vendor = PCI_VENDOR_ID_SONY;
486         key_dev->dev.parent = &acpi_device->dev;
487 
488         /* Initialize the Input Drivers: special keys */
489         input_set_capability(key_dev, EV_MSC, MSC_SCAN);
490 
491         __set_bit(EV_KEY, key_dev->evbit);
492         key_dev->keycodesize = sizeof(sony_laptop_input_keycode_map[0]);
493         key_dev->keycodemax = ARRAY_SIZE(sony_laptop_input_keycode_map);
494         key_dev->keycode = &sony_laptop_input_keycode_map;
495         for (i = 0; i < ARRAY_SIZE(sony_laptop_input_keycode_map); i++)
496                 __set_bit(sony_laptop_input_keycode_map[i], key_dev->keybit);
497         __clear_bit(KEY_RESERVED, key_dev->keybit);
498 
499         error = input_register_device(key_dev);
500         if (error)
501                 goto err_free_keydev;
502 
503         sony_laptop_input.key_dev = key_dev;
504 
505         /* jogdial */
506         jog_dev = input_allocate_device();
507         if (!jog_dev) {
508                 error = -ENOMEM;
509                 goto err_unregister_keydev;
510         }
511 
512         jog_dev->name = "Sony Vaio Jogdial";
513         jog_dev->id.bustype = BUS_ISA;
514         jog_dev->id.vendor = PCI_VENDOR_ID_SONY;
515         jog_dev->dev.parent = &acpi_device->dev;
516 
517         input_set_capability(jog_dev, EV_KEY, BTN_MIDDLE);
518         input_set_capability(jog_dev, EV_REL, REL_WHEEL);
519 
520         error = input_register_device(jog_dev);
521         if (error)
522                 goto err_free_jogdev;
523 
524         sony_laptop_input.jog_dev = jog_dev;
525 
526         return 0;
527 
528 err_free_jogdev:
529         input_free_device(jog_dev);
530 
531 err_unregister_keydev:
532         input_unregister_device(key_dev);
533         /* to avoid kref underflow below at input_free_device */
534         key_dev = NULL;
535 
536 err_free_keydev:
537         input_free_device(key_dev);
538 
539 err_free_kfifo:
540         kfifo_free(&sony_laptop_input.fifo);
541 
542 err_dec_users:
543         atomic_dec(&sony_laptop_input.users);
544         return error;
545 }
546 
547 static void sony_laptop_remove_input(void)
548 {
549         struct sony_laptop_keypress kp = { NULL };
550 
551         /* Cleanup only after the last user has gone */
552         if (!atomic_dec_and_test(&sony_laptop_input.users))
553                 return;
554 
555         del_timer_sync(&sony_laptop_input.release_key_timer);
556 
557         /*
558          * Generate key-up events for remaining keys. Note that we don't
559          * need locking since nobody is adding new events to the kfifo.
560          */
561         while (kfifo_out(&sony_laptop_input.fifo,
562                          (unsigned char *)&kp, sizeof(kp)) == sizeof(kp)) {
563                 input_report_key(kp.dev, kp.key, 0);
564                 input_sync(kp.dev);
565         }
566 
567         /* destroy input devs */
568         input_unregister_device(sony_laptop_input.key_dev);
569         sony_laptop_input.key_dev = NULL;
570 
571         if (sony_laptop_input.jog_dev) {
572                 input_unregister_device(sony_laptop_input.jog_dev);
573                 sony_laptop_input.jog_dev = NULL;
574         }
575 
576         kfifo_free(&sony_laptop_input.fifo);
577 }
578 
579 /*********** Platform Device ***********/
580 
581 static atomic_t sony_pf_users = ATOMIC_INIT(0);
582 static struct platform_driver sony_pf_driver = {
583         .driver = {
584                    .name = "sony-laptop",
585                    }
586 };
587 static struct platform_device *sony_pf_device;
588 
589 static int sony_pf_add(void)
590 {
591         int ret = 0;
592 
593         /* don't run again if already initialized */
594         if (atomic_add_return(1, &sony_pf_users) > 1)
595                 return 0;
596 
597         ret = platform_driver_register(&sony_pf_driver);
598         if (ret)
599                 goto out;
600 
601         sony_pf_device = platform_device_alloc("sony-laptop", -1);
602         if (!sony_pf_device) {
603                 ret = -ENOMEM;
604                 goto out_platform_registered;
605         }
606 
607         ret = platform_device_add(sony_pf_device);
608         if (ret)
609                 goto out_platform_alloced;
610 
611         return 0;
612 
613       out_platform_alloced:
614         platform_device_put(sony_pf_device);
615         sony_pf_device = NULL;
616       out_platform_registered:
617         platform_driver_unregister(&sony_pf_driver);
618       out:
619         atomic_dec(&sony_pf_users);
620         return ret;
621 }
622 
623 static void sony_pf_remove(void)
624 {
625         /* deregister only after the last user has gone */
626         if (!atomic_dec_and_test(&sony_pf_users))
627                 return;
628 
629         platform_device_unregister(sony_pf_device);
630         platform_driver_unregister(&sony_pf_driver);
631 }
632 
633 /*********** SNC (SNY5001) Device ***********/
634 
635 /* the device uses 1-based values, while the backlight subsystem uses
636    0-based values */
637 #define SONY_MAX_BRIGHTNESS     8
638 
639 #define SNC_VALIDATE_IN         0
640 #define SNC_VALIDATE_OUT        1
641 
642 static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
643                               char *);
644 static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
645                                const char *, size_t);
646 static int boolean_validate(const int, const int);
647 static int brightness_default_validate(const int, const int);
648 
649 struct sony_nc_value {
650         char *name;             /* name of the entry */
651         char **acpiget;         /* names of the ACPI get function */
652         char **acpiset;         /* names of the ACPI set function */
653         int (*validate)(const int, const int);  /* input/output validation */
654         int value;              /* current setting */
655         int valid;              /* Has ever been set */
656         int debug;              /* active only in debug mode ? */
657         struct device_attribute devattr;        /* sysfs attribute */
658 };
659 
660 #define SNC_HANDLE_NAMES(_name, _values...) \
661         static char *snc_##_name[] = { _values, NULL }
662 
663 #define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
664         { \
665                 .name           = __stringify(_name), \
666                 .acpiget        = _getters, \
667                 .acpiset        = _setters, \
668                 .validate       = _validate, \
669                 .debug          = _debug, \
670                 .devattr        = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
671         }
672 
673 #define SNC_HANDLE_NULL { .name = NULL }
674 
675 SNC_HANDLE_NAMES(fnkey_get, "GHKE");
676 
677 SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
678 SNC_HANDLE_NAMES(brightness_def_set, "SPBR");
679 
680 SNC_HANDLE_NAMES(cdpower_get, "GCDP");
681 SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
682 
683 SNC_HANDLE_NAMES(audiopower_get, "GAZP");
684 SNC_HANDLE_NAMES(audiopower_set, "AZPW");
685 
686 SNC_HANDLE_NAMES(lanpower_get, "GLNP");
687 SNC_HANDLE_NAMES(lanpower_set, "LNPW");
688 
689 SNC_HANDLE_NAMES(lidstate_get, "GLID");
690 
691 SNC_HANDLE_NAMES(indicatorlamp_get, "GILS");
692 SNC_HANDLE_NAMES(indicatorlamp_set, "SILS");
693 
694 SNC_HANDLE_NAMES(gainbass_get, "GMGB");
695 SNC_HANDLE_NAMES(gainbass_set, "CMGB");
696 
697 SNC_HANDLE_NAMES(PID_get, "GPID");
698 
699 SNC_HANDLE_NAMES(CTR_get, "GCTR");
700 SNC_HANDLE_NAMES(CTR_set, "SCTR");
701 
702 SNC_HANDLE_NAMES(PCR_get, "GPCR");
703 SNC_HANDLE_NAMES(PCR_set, "SPCR");
704 
705 SNC_HANDLE_NAMES(CMI_get, "GCMI");
706 SNC_HANDLE_NAMES(CMI_set, "SCMI");
707 
708 static struct sony_nc_value sony_nc_values[] = {
709         SNC_HANDLE(brightness_default, snc_brightness_def_get,
710                         snc_brightness_def_set, brightness_default_validate, 0),
711         SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
712         SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
713         SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
714                         boolean_validate, 0),
715         SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
716                         boolean_validate, 1),
717         SNC_HANDLE(lidstate, snc_lidstate_get, NULL,
718                         boolean_validate, 0),
719         SNC_HANDLE(indicatorlamp, snc_indicatorlamp_get, snc_indicatorlamp_set,
720                         boolean_validate, 0),
721         SNC_HANDLE(gainbass, snc_gainbass_get, snc_gainbass_set,
722                         boolean_validate, 0),
723         /* unknown methods */
724         SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
725         SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
726         SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
727         SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
728         SNC_HANDLE_NULL
729 };
730 
731 static acpi_handle sony_nc_acpi_handle;
732 static struct acpi_device *sony_nc_acpi_device = NULL;
733 
734 /*
735  * acpi_evaluate_object wrappers
736  * all useful calls into SNC methods take one or zero parameters and return
737  * integers or arrays.
738  */
739 static union acpi_object *__call_snc_method(acpi_handle handle, char *method,
740                 u64 *value)
741 {
742         union acpi_object *result = NULL;
743         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
744         acpi_status status;
745 
746         if (value) {
747                 struct acpi_object_list params;
748                 union acpi_object in;
749                 in.type = ACPI_TYPE_INTEGER;
750                 in.integer.value = *value;
751                 params.count = 1;
752                 params.pointer = &in;
753                 status = acpi_evaluate_object(handle, method, &params, &output);
754                 dprintk("__call_snc_method: [%s:0x%.8x%.8x]\n", method,
755                                 (unsigned int)(*value >> 32),
756                                 (unsigned int)*value & 0xffffffff);
757         } else {
758                 status = acpi_evaluate_object(handle, method, NULL, &output);
759                 dprintk("__call_snc_method: [%s]\n", method);
760         }
761 
762         if (ACPI_FAILURE(status)) {
763                 pr_err("Failed to evaluate [%s]\n", method);
764                 return NULL;
765         }
766 
767         result = (union acpi_object *) output.pointer;
768         if (!result)
769                 dprintk("No return object [%s]\n", method);
770 
771         return result;
772 }
773 
774 static int sony_nc_int_call(acpi_handle handle, char *name, int *value,
775                 int *result)
776 {
777         union acpi_object *object = NULL;
778         if (value) {
779                 u64 v = *value;
780                 object = __call_snc_method(handle, name, &v);
781         } else
782                 object = __call_snc_method(handle, name, NULL);
783 
784         if (!object)
785                 return -EINVAL;
786 
787         if (object->type != ACPI_TYPE_INTEGER) {
788                 pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
789                                 ACPI_TYPE_INTEGER, object->type);
790                 kfree(object);
791                 return -EINVAL;
792         }
793 
794         if (result)
795                 *result = object->integer.value;
796 
797         kfree(object);
798         return 0;
799 }
800 
801 #define MIN(a, b)       (a > b ? b : a)
802 static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
803                 void *buffer, size_t buflen)
804 {
805         int ret = 0;
806         size_t len;
807         union acpi_object *object = __call_snc_method(handle, name, value);
808 
809         if (!object)
810                 return -EINVAL;
811 
812         if (object->type == ACPI_TYPE_BUFFER) {
813                 len = MIN(buflen, object->buffer.length);
814                 memcpy(buffer, object->buffer.pointer, len);
815 
816         } else if (object->type == ACPI_TYPE_INTEGER) {
817                 len = MIN(buflen, sizeof(object->integer.value));
818                 memcpy(buffer, &object->integer.value, len);
819 
820         } else {
821                 pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
822                                 ACPI_TYPE_BUFFER, object->type);
823                 ret = -EINVAL;
824         }
825 
826         kfree(object);
827         return ret;
828 }
829 
830 struct sony_nc_handles {
831         u16 cap[0x10];
832         struct device_attribute devattr;
833 };
834 
835 static struct sony_nc_handles *handles;
836 
837 static ssize_t sony_nc_handles_show(struct device *dev,
838                 struct device_attribute *attr, char *buffer)
839 {
840         ssize_t len = 0;
841         int i;
842 
843         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
844                 len += snprintf(buffer + len, PAGE_SIZE - len, "0x%.4x ",
845                                 handles->cap[i]);
846         }
847         len += snprintf(buffer + len, PAGE_SIZE - len, "\n");
848 
849         return len;
850 }
851 
852 static int sony_nc_handles_setup(struct platform_device *pd)
853 {
854         int i, r, result, arg;
855 
856         handles = kzalloc(sizeof(*handles), GFP_KERNEL);
857         if (!handles)
858                 return -ENOMEM;
859 
860         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
861                 arg = i + 0x20;
862                 r = sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg,
863                                         &result);
864                 if (!r) {
865                         dprintk("caching handle 0x%.4x (offset: 0x%.2x)\n",
866                                         result, i);
867                         handles->cap[i] = result;
868                 }
869         }
870 
871         if (debug) {
872                 sysfs_attr_init(&handles->devattr.attr);
873                 handles->devattr.attr.name = "handles";
874                 handles->devattr.attr.mode = S_IRUGO;
875                 handles->devattr.show = sony_nc_handles_show;
876 
877                 /* allow reading capabilities via sysfs */
878                 if (device_create_file(&pd->dev, &handles->devattr)) {
879                         kfree(handles);
880                         handles = NULL;
881                         return -1;
882                 }
883         }
884 
885         return 0;
886 }
887 
888 static int sony_nc_handles_cleanup(struct platform_device *pd)
889 {
890         if (handles) {
891                 if (debug)
892                         device_remove_file(&pd->dev, &handles->devattr);
893                 kfree(handles);
894                 handles = NULL;
895         }
896         return 0;
897 }
898 
899 static int sony_find_snc_handle(int handle)
900 {
901         int i;
902 
903         /* not initialized yet, return early */
904         if (!handles || !handle)
905                 return -EINVAL;
906 
907         for (i = 0; i < 0x10; i++) {
908                 if (handles->cap[i] == handle) {
909                         dprintk("found handle 0x%.4x (offset: 0x%.2x)\n",
910                                         handle, i);
911                         return i;
912                 }
913         }
914         dprintk("handle 0x%.4x not found\n", handle);
915         return -EINVAL;
916 }
917 
918 static int sony_call_snc_handle(int handle, int argument, int *result)
919 {
920         int arg, ret = 0;
921         int offset = sony_find_snc_handle(handle);
922 
923         if (offset < 0)
924                 return offset;
925 
926         arg = offset | argument;
927         ret = sony_nc_int_call(sony_nc_acpi_handle, "SN07", &arg, result);
928         dprintk("called SN07 with 0x%.4x (result: 0x%.4x)\n", arg, *result);
929         return ret;
930 }
931 
932 /*
933  * sony_nc_values input/output validate functions
934  */
935 
936 /* brightness_default_validate:
937  *
938  * manipulate input output values to keep consistency with the
939  * backlight framework for which brightness values are 0-based.
940  */
941 static int brightness_default_validate(const int direction, const int value)
942 {
943         switch (direction) {
944                 case SNC_VALIDATE_OUT:
945                         return value - 1;
946                 case SNC_VALIDATE_IN:
947                         if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
948                                 return value + 1;
949         }
950         return -EINVAL;
951 }
952 
953 /* boolean_validate:
954  *
955  * on input validate boolean values 0/1, on output just pass the
956  * received value.
957  */
958 static int boolean_validate(const int direction, const int value)
959 {
960         if (direction == SNC_VALIDATE_IN) {
961                 if (value != 0 && value != 1)
962                         return -EINVAL;
963         }
964         return value;
965 }
966 
967 /*
968  * Sysfs show/store common to all sony_nc_values
969  */
970 static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
971                               char *buffer)
972 {
973         int value, ret = 0;
974         struct sony_nc_value *item =
975             container_of(attr, struct sony_nc_value, devattr);
976 
977         if (!*item->acpiget)
978                 return -EIO;
979 
980         ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiget, NULL,
981                                 &value);
982         if (ret < 0)
983                 return -EIO;
984 
985         if (item->validate)
986                 value = item->validate(SNC_VALIDATE_OUT, value);
987 
988         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
989 }
990 
991 static ssize_t sony_nc_sysfs_store(struct device *dev,
992                                struct device_attribute *attr,
993                                const char *buffer, size_t count)
994 {
995         int value;
996         int ret = 0;
997         struct sony_nc_value *item =
998             container_of(attr, struct sony_nc_value, devattr);
999 
1000         if (!item->acpiset)
1001                 return -EIO;
1002 
1003         if (count > 31)
1004                 return -EINVAL;
1005 
1006         if (kstrtoint(buffer, 10, &value))
1007                 return -EINVAL;
1008 
1009         if (item->validate)
1010                 value = item->validate(SNC_VALIDATE_IN, value);
1011 
1012         if (value < 0)
1013                 return value;
1014 
1015         ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
1016                                &value, NULL);
1017         if (ret < 0)
1018                 return -EIO;
1019 
1020         item->value = value;
1021         item->valid = 1;
1022         return count;
1023 }
1024 
1025 
1026 /*
1027  * Backlight device
1028  */
1029 struct sony_backlight_props {
1030         struct backlight_device *dev;
1031         int                     handle;
1032         int                     cmd_base;
1033         u8                      offset;
1034         u8                      maxlvl;
1035 };
1036 static struct sony_backlight_props sony_bl_props;
1037 
1038 static int sony_backlight_update_status(struct backlight_device *bd)
1039 {
1040         int arg = bd->props.brightness + 1;
1041         return sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &arg, NULL);
1042 }
1043 
1044 static int sony_backlight_get_brightness(struct backlight_device *bd)
1045 {
1046         int value;
1047 
1048         if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL, &value))
1049                 return 0;
1050         /* brightness levels are 1-based, while backlight ones are 0-based */
1051         return value - 1;
1052 }
1053 
1054 static int sony_nc_get_brightness_ng(struct backlight_device *bd)
1055 {
1056         int result;
1057         struct sony_backlight_props *sdev =
1058                 (struct sony_backlight_props *)bl_get_data(bd);
1059 
1060         sony_call_snc_handle(sdev->handle, sdev->cmd_base + 0x100, &result);
1061 
1062         return (result & 0xff) - sdev->offset;
1063 }
1064 
1065 static int sony_nc_update_status_ng(struct backlight_device *bd)
1066 {
1067         int value, result;
1068         struct sony_backlight_props *sdev =
1069                 (struct sony_backlight_props *)bl_get_data(bd);
1070 
1071         value = bd->props.brightness + sdev->offset;
1072         if (sony_call_snc_handle(sdev->handle, sdev->cmd_base | (value << 0x10),
1073                                 &result))
1074                 return -EIO;
1075 
1076         return value;
1077 }
1078 
1079 static const struct backlight_ops sony_backlight_ops = {
1080         .options = BL_CORE_SUSPENDRESUME,
1081         .update_status = sony_backlight_update_status,
1082         .get_brightness = sony_backlight_get_brightness,
1083 };
1084 static const struct backlight_ops sony_backlight_ng_ops = {
1085         .options = BL_CORE_SUSPENDRESUME,
1086         .update_status = sony_nc_update_status_ng,
1087         .get_brightness = sony_nc_get_brightness_ng,
1088 };
1089 
1090 /*
1091  * New SNC-only Vaios event mapping to driver known keys
1092  */
1093 struct sony_nc_event {
1094         u8      data;
1095         u8      event;
1096 };
1097 
1098 static struct sony_nc_event sony_100_events[] = {
1099         { 0x90, SONYPI_EVENT_PKEY_P1 },
1100         { 0x10, SONYPI_EVENT_ANYBUTTON_RELEASED },
1101         { 0x91, SONYPI_EVENT_PKEY_P2 },
1102         { 0x11, SONYPI_EVENT_ANYBUTTON_RELEASED },
1103         { 0x81, SONYPI_EVENT_FNKEY_F1 },
1104         { 0x01, SONYPI_EVENT_FNKEY_RELEASED },
1105         { 0x82, SONYPI_EVENT_FNKEY_F2 },
1106         { 0x02, SONYPI_EVENT_FNKEY_RELEASED },
1107         { 0x83, SONYPI_EVENT_FNKEY_F3 },
1108         { 0x03, SONYPI_EVENT_FNKEY_RELEASED },
1109         { 0x84, SONYPI_EVENT_FNKEY_F4 },
1110         { 0x04, SONYPI_EVENT_FNKEY_RELEASED },
1111         { 0x85, SONYPI_EVENT_FNKEY_F5 },
1112         { 0x05, SONYPI_EVENT_FNKEY_RELEASED },
1113         { 0x86, SONYPI_EVENT_FNKEY_F6 },
1114         { 0x06, SONYPI_EVENT_FNKEY_RELEASED },
1115         { 0x87, SONYPI_EVENT_FNKEY_F7 },
1116         { 0x07, SONYPI_EVENT_FNKEY_RELEASED },
1117         { 0x88, SONYPI_EVENT_FNKEY_F8 },
1118         { 0x08, SONYPI_EVENT_FNKEY_RELEASED },
1119         { 0x89, SONYPI_EVENT_FNKEY_F9 },
1120         { 0x09, SONYPI_EVENT_FNKEY_RELEASED },
1121         { 0x8A, SONYPI_EVENT_FNKEY_F10 },
1122         { 0x0A, SONYPI_EVENT_FNKEY_RELEASED },
1123         { 0x8B, SONYPI_EVENT_FNKEY_F11 },
1124         { 0x0B, SONYPI_EVENT_FNKEY_RELEASED },
1125         { 0x8C, SONYPI_EVENT_FNKEY_F12 },
1126         { 0x0C, SONYPI_EVENT_FNKEY_RELEASED },
1127         { 0x9d, SONYPI_EVENT_ZOOM_PRESSED },
1128         { 0x1d, SONYPI_EVENT_ANYBUTTON_RELEASED },
1129         { 0x9f, SONYPI_EVENT_CD_EJECT_PRESSED },
1130         { 0x1f, SONYPI_EVENT_ANYBUTTON_RELEASED },
1131         { 0xa1, SONYPI_EVENT_MEDIA_PRESSED },
1132         { 0x21, SONYPI_EVENT_ANYBUTTON_RELEASED },
1133         { 0xa4, SONYPI_EVENT_CD_EJECT_PRESSED },
1134         { 0x24, SONYPI_EVENT_ANYBUTTON_RELEASED },
1135         { 0xa5, SONYPI_EVENT_VENDOR_PRESSED },
1136         { 0x25, SONYPI_EVENT_ANYBUTTON_RELEASED },
1137         { 0xa6, SONYPI_EVENT_HELP_PRESSED },
1138         { 0x26, SONYPI_EVENT_ANYBUTTON_RELEASED },
1139         { 0xa8, SONYPI_EVENT_FNKEY_1 },
1140         { 0x28, SONYPI_EVENT_ANYBUTTON_RELEASED },
1141         { 0, 0 },
1142 };
1143 
1144 static struct sony_nc_event sony_127_events[] = {
1145         { 0x81, SONYPI_EVENT_MODEKEY_PRESSED },
1146         { 0x01, SONYPI_EVENT_ANYBUTTON_RELEASED },
1147         { 0x82, SONYPI_EVENT_PKEY_P1 },
1148         { 0x02, SONYPI_EVENT_ANYBUTTON_RELEASED },
1149         { 0x83, SONYPI_EVENT_PKEY_P2 },
1150         { 0x03, SONYPI_EVENT_ANYBUTTON_RELEASED },
1151         { 0x84, SONYPI_EVENT_PKEY_P3 },
1152         { 0x04, SONYPI_EVENT_ANYBUTTON_RELEASED },
1153         { 0x85, SONYPI_EVENT_PKEY_P4 },
1154         { 0x05, SONYPI_EVENT_ANYBUTTON_RELEASED },
1155         { 0x86, SONYPI_EVENT_PKEY_P5 },
1156         { 0x06, SONYPI_EVENT_ANYBUTTON_RELEASED },
1157         { 0x87, SONYPI_EVENT_SETTINGKEY_PRESSED },
1158         { 0x07, SONYPI_EVENT_ANYBUTTON_RELEASED },
1159         { 0, 0 },
1160 };
1161 
1162 static int sony_nc_hotkeys_decode(u32 event, unsigned int handle)
1163 {
1164         int ret = -EINVAL;
1165         unsigned int result = 0;
1166         struct sony_nc_event *key_event;
1167 
1168         if (sony_call_snc_handle(handle, 0x200, &result)) {
1169                 dprintk("Unable to decode event 0x%.2x 0x%.2x\n", handle,
1170                                 event);
1171                 return -EINVAL;
1172         }
1173 
1174         result &= 0xFF;
1175 
1176         if (handle == 0x0100)
1177                 key_event = sony_100_events;
1178         else
1179                 key_event = sony_127_events;
1180 
1181         for (; key_event->data; key_event++) {
1182                 if (key_event->data == result) {
1183                         ret = key_event->event;
1184                         break;
1185                 }
1186         }
1187 
1188         if (!key_event->data)
1189                 pr_info("Unknown hotkey 0x%.2x/0x%.2x (handle 0x%.2x)\n",
1190                                 event, result, handle);
1191 
1192         return ret;
1193 }
1194 
1195 /*
1196  * ACPI callbacks
1197  */
1198 enum event_types {
1199         HOTKEY = 1,
1200         KILLSWITCH,
1201         GFX_SWITCH
1202 };
1203 static void sony_nc_notify(struct acpi_device *device, u32 event)
1204 {
1205         u32 real_ev = event;
1206         u8 ev_type = 0;
1207         int ret;
1208 
1209         dprintk("sony_nc_notify, event: 0x%.2x\n", event);
1210 
1211         if (event >= 0x90) {
1212                 unsigned int result = 0;
1213                 unsigned int arg = 0;
1214                 unsigned int handle = 0;
1215                 unsigned int offset = event - 0x90;
1216 
1217                 if (offset >= ARRAY_SIZE(handles->cap)) {
1218                         pr_err("Event 0x%x outside of capabilities list\n",
1219                                         event);
1220                         return;
1221                 }
1222                 handle = handles->cap[offset];
1223 
1224                 /* list of handles known for generating events */
1225                 switch (handle) {
1226                 /* hotkey event */
1227                 case 0x0100:
1228                 case 0x0127:
1229                         ev_type = HOTKEY;
1230                         ret = sony_nc_hotkeys_decode(event, handle);
1231 
1232                         if (ret > 0) {
1233                                 sony_laptop_report_input_event(ret);
1234                                 real_ev = ret;
1235                         }
1236 
1237                         break;
1238 
1239                 /* wlan switch */
1240                 case 0x0124:
1241                 case 0x0135:
1242                         /* events on this handle are reported when the
1243                          * switch changes position or for battery
1244                          * events. We'll notify both of them but only
1245                          * update the rfkill device status when the
1246                          * switch is moved.
1247                          */
1248                         ev_type = KILLSWITCH;
1249                         sony_call_snc_handle(handle, 0x0100, &result);
1250                         real_ev = result & 0x03;
1251 
1252                         /* hw switch event */
1253                         if (real_ev == 1)
1254                                 sony_nc_rfkill_update();
1255 
1256                         break;
1257 
1258                 case 0x0128:
1259                 case 0x0146:
1260                         /* Hybrid GFX switching */
1261                         sony_call_snc_handle(handle, 0x0000, &result);
1262                         dprintk("GFX switch event received (reason: %s)\n",
1263                                         (result == 0x1) ? "switch change" :
1264                                         (result == 0x2) ? "output switch" :
1265                                         (result == 0x3) ? "output switch" :
1266                                         "");
1267 
1268                         ev_type = GFX_SWITCH;
1269                         real_ev = __sony_nc_gfx_switch_status_get();
1270                         break;
1271 
1272                 case 0x015B:
1273                         /* Hybrid GFX switching SVS151290S */
1274                         ev_type = GFX_SWITCH;
1275                         real_ev = __sony_nc_gfx_switch_status_get();
1276                         break;
1277                 default:
1278                         dprintk("Unknown event 0x%x for handle 0x%x\n",
1279                                         event, handle);
1280                         break;
1281                 }
1282 
1283                 /* clear the event (and the event reason when present) */
1284                 arg = 1 << offset;
1285                 sony_nc_int_call(sony_nc_acpi_handle, "SN05", &arg, &result);
1286 
1287         } else {
1288                 /* old style event */
1289                 ev_type = HOTKEY;
1290                 sony_laptop_report_input_event(real_ev);
1291         }
1292         acpi_bus_generate_netlink_event(sony_nc_acpi_device->pnp.device_class,
1293                         dev_name(&sony_nc_acpi_device->dev), ev_type, real_ev);
1294 }
1295 
1296 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
1297                                       void *context, void **return_value)
1298 {
1299         struct acpi_device_info *info;
1300 
1301         if (ACPI_SUCCESS(acpi_get_object_info(handle, &info))) {
1302                 pr_warn("method: name: %4.4s, args %X\n",
1303                         (char *)&info->name, info->param_count);
1304 
1305                 kfree(info);
1306         }
1307 
1308         return AE_OK;
1309 }
1310 
1311 /*
1312  * ACPI device
1313  */
1314 static void sony_nc_function_setup(struct acpi_device *device,
1315                 struct platform_device *pf_device)
1316 {
1317         unsigned int i, result, bitmask, arg;
1318 
1319         if (!handles)
1320                 return;
1321 
1322         /* setup found handles here */
1323         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1324                 unsigned int handle = handles->cap[i];
1325 
1326                 if (!handle)
1327                         continue;
1328 
1329                 dprintk("setting up handle 0x%.4x\n", handle);
1330 
1331                 switch (handle) {
1332                 case 0x0100:
1333                 case 0x0101:
1334                 case 0x0127:
1335                         /* setup hotkeys */
1336                         sony_call_snc_handle(handle, 0, &result);
1337                         break;
1338                 case 0x0102:
1339                         /* setup hotkeys */
1340                         sony_call_snc_handle(handle, 0x100, &result);
1341                         break;
1342                 case 0x0105:
1343                 case 0x0148:
1344                         /* touchpad enable/disable */
1345                         result = sony_nc_touchpad_setup(pf_device, handle);
1346                         if (result)
1347                                 pr_err("couldn't set up touchpad control function (%d)\n",
1348                                                 result);
1349                         break;
1350                 case 0x0115:
1351                 case 0x0136:
1352                 case 0x013f:
1353                         result = sony_nc_battery_care_setup(pf_device, handle);
1354                         if (result)
1355                                 pr_err("couldn't set up battery care function (%d)\n",
1356                                                 result);
1357                         break;
1358                 case 0x0119:
1359                 case 0x015D:
1360                         result = sony_nc_lid_resume_setup(pf_device, handle);
1361                         if (result)
1362                                 pr_err("couldn't set up lid resume function (%d)\n",
1363                                                 result);
1364                         break;
1365                 case 0x0122:
1366                         result = sony_nc_thermal_setup(pf_device);
1367                         if (result)
1368                                 pr_err("couldn't set up thermal profile function (%d)\n",
1369                                                 result);
1370                         break;
1371                 case 0x0128:
1372                 case 0x0146:
1373                 case 0x015B:
1374                         result = sony_nc_gfx_switch_setup(pf_device, handle);
1375                         if (result)
1376                                 pr_err("couldn't set up GFX Switch status (%d)\n",
1377                                                 result);
1378                         break;
1379                 case 0x0131:
1380                         result = sony_nc_highspeed_charging_setup(pf_device);
1381                         if (result)
1382                                 pr_err("couldn't set up high speed charging function (%d)\n",
1383                                        result);
1384                         break;
1385                 case 0x0124:
1386                 case 0x0135:
1387                         result = sony_nc_rfkill_setup(device, handle);
1388                         if (result)
1389                                 pr_err("couldn't set up rfkill support (%d)\n",
1390                                                 result);
1391                         break;
1392                 case 0x0137:
1393                 case 0x0143:
1394                 case 0x014b:
1395                 case 0x014c:
1396                 case 0x0153:
1397                 case 0x0163:
1398                         result = sony_nc_kbd_backlight_setup(pf_device, handle);
1399                         if (result)
1400                                 pr_err("couldn't set up keyboard backlight function (%d)\n",
1401                                                 result);
1402                         break;
1403                 case 0x0121:
1404                         result = sony_nc_lowbatt_setup(pf_device);
1405                         if (result)
1406                                 pr_err("couldn't set up low battery function (%d)\n",
1407                                        result);
1408                         break;
1409                 case 0x0149:
1410                         result = sony_nc_fanspeed_setup(pf_device);
1411                         if (result)
1412                                 pr_err("couldn't set up fan speed function (%d)\n",
1413                                        result);
1414                         break;
1415                 case 0x0155:
1416                         result = sony_nc_usb_charge_setup(pf_device);
1417                         if (result)
1418                                 pr_err("couldn't set up USB charge support (%d)\n",
1419                                                 result);
1420                         break;
1421                 case 0x011D:
1422                         result = sony_nc_panelid_setup(pf_device);
1423                         if (result)
1424                                 pr_err("couldn't set up panel ID function (%d)\n",
1425                                        result);
1426                         break;
1427                 case 0x0168:
1428                         result = sony_nc_smart_conn_setup(pf_device);
1429                         if (result)
1430                                 pr_err("couldn't set up smart connect support (%d)\n",
1431                                                 result);
1432                         break;
1433                 default:
1434                         continue;
1435                 }
1436         }
1437 
1438         /* Enable all events */
1439         arg = 0x10;
1440         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1441                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1442                                 &result);
1443 }
1444 
1445 static void sony_nc_function_cleanup(struct platform_device *pd)
1446 {
1447         unsigned int i, result, bitmask, handle;
1448 
1449         if (!handles)
1450                 return;
1451 
1452         /* get enabled events and disable them */
1453         sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
1454         sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);
1455 
1456         /* cleanup handles here */
1457         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1458 
1459                 handle = handles->cap[i];
1460 
1461                 if (!handle)
1462                         continue;
1463 
1464                 switch (handle) {
1465                 case 0x0105:
1466                 case 0x0148:
1467                         sony_nc_touchpad_cleanup(pd);
1468                         break;
1469                 case 0x0115:
1470                 case 0x0136:
1471                 case 0x013f:
1472                         sony_nc_battery_care_cleanup(pd);
1473                         break;
1474                 case 0x0119:
1475                 case 0x015D:
1476                         sony_nc_lid_resume_cleanup(pd);
1477                         break;
1478                 case 0x0122:
1479                         sony_nc_thermal_cleanup(pd);
1480                         break;
1481                 case 0x0128:
1482                 case 0x0146:
1483                 case 0x015B:
1484                         sony_nc_gfx_switch_cleanup(pd);
1485                         break;
1486                 case 0x0131:
1487                         sony_nc_highspeed_charging_cleanup(pd);
1488                         break;
1489                 case 0x0124:
1490                 case 0x0135:
1491                         sony_nc_rfkill_cleanup();
1492                         break;
1493                 case 0x0137:
1494                 case 0x0143:
1495                 case 0x014b:
1496                 case 0x014c:
1497                 case 0x0153:
1498                 case 0x0163:
1499                         sony_nc_kbd_backlight_cleanup(pd, handle);
1500                         break;
1501                 case 0x0121:
1502                         sony_nc_lowbatt_cleanup(pd);
1503                         break;
1504                 case 0x0149:
1505                         sony_nc_fanspeed_cleanup(pd);
1506                         break;
1507                 case 0x0155:
1508                         sony_nc_usb_charge_cleanup(pd);
1509                         break;
1510                 case 0x011D:
1511                         sony_nc_panelid_cleanup(pd);
1512                         break;
1513                 case 0x0168:
1514                         sony_nc_smart_conn_cleanup(pd);
1515                         break;
1516                 default:
1517                         continue;
1518                 }
1519         }
1520 
1521         /* finally cleanup the handles list */
1522         sony_nc_handles_cleanup(pd);
1523 }
1524 
1525 #ifdef CONFIG_PM_SLEEP
1526 static void sony_nc_function_resume(void)
1527 {
1528         unsigned int i, result, bitmask, arg;
1529 
1530         dprintk("Resuming SNC device\n");
1531 
1532         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1533                 unsigned int handle = handles->cap[i];
1534 
1535                 if (!handle)
1536                         continue;
1537 
1538                 switch (handle) {
1539                 case 0x0100:
1540                 case 0x0101:
1541                 case 0x0127:
1542                         /* re-enable hotkeys */
1543                         sony_call_snc_handle(handle, 0, &result);
1544                         break;
1545                 case 0x0102:
1546                         /* re-enable hotkeys */
1547                         sony_call_snc_handle(handle, 0x100, &result);
1548                         break;
1549                 case 0x0122:
1550                         sony_nc_thermal_resume();
1551                         break;
1552                 case 0x0124:
1553                 case 0x0135:
1554                         sony_nc_rfkill_update();
1555                         break;
1556                 default:
1557                         continue;
1558                 }
1559         }
1560 
1561         /* Enable all events */
1562         arg = 0x10;
1563         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1564                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1565                                 &result);
1566 }
1567 
1568 static int sony_nc_resume(struct device *dev)
1569 {
1570         struct sony_nc_value *item;
1571 
1572         for (item = sony_nc_values; item->name; item++) {
1573                 int ret;
1574 
1575                 if (!item->valid)
1576                         continue;
1577                 ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
1578                                        &item->value, NULL);
1579                 if (ret < 0) {
1580                         pr_err("%s: %d\n", __func__, ret);
1581                         break;
1582                 }
1583         }
1584 
1585         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
1586                 int arg = 1;
1587                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
1588                         dprintk("ECON Method failed\n");
1589         }
1590 
1591         if (acpi_has_method(sony_nc_acpi_handle, "SN00"))
1592                 sony_nc_function_resume();
1593 
1594         return 0;
1595 }
1596 #endif
1597 
1598 static SIMPLE_DEV_PM_OPS(sony_nc_pm, NULL, sony_nc_resume);
1599 
1600 static void sony_nc_rfkill_cleanup(void)
1601 {
1602         int i;
1603 
1604         for (i = 0; i < N_SONY_RFKILL; i++) {
1605                 if (sony_rfkill_devices[i]) {
1606                         rfkill_unregister(sony_rfkill_devices[i]);
1607                         rfkill_destroy(sony_rfkill_devices[i]);
1608                 }
1609         }
1610 }
1611 
1612 static int sony_nc_rfkill_set(void *data, bool blocked)
1613 {
1614         int result;
1615         int argument = sony_rfkill_address[(long) data] + 0x100;
1616 
1617         if (!blocked)
1618                 argument |= 0x070000;
1619 
1620         return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1621 }
1622 
1623 static const struct rfkill_ops sony_rfkill_ops = {
1624         .set_block = sony_nc_rfkill_set,
1625 };
1626 
1627 static int sony_nc_setup_rfkill(struct acpi_device *device,
1628                                 enum sony_nc_rfkill nc_type)
1629 {
1630         int err = 0;
1631         struct rfkill *rfk;
1632         enum rfkill_type type;
1633         const char *name;
1634         int result;
1635         bool hwblock, swblock;
1636 
1637         switch (nc_type) {
1638         case SONY_WIFI:
1639                 type = RFKILL_TYPE_WLAN;
1640                 name = "sony-wifi";
1641                 break;
1642         case SONY_BLUETOOTH:
1643                 type = RFKILL_TYPE_BLUETOOTH;
1644                 name = "sony-bluetooth";
1645                 break;
1646         case SONY_WWAN:
1647                 type = RFKILL_TYPE_WWAN;
1648                 name = "sony-wwan";
1649                 break;
1650         case SONY_WIMAX:
1651                 type = RFKILL_TYPE_WIMAX;
1652                 name = "sony-wimax";
1653                 break;
1654         default:
1655                 return -EINVAL;
1656         }
1657 
1658         rfk = rfkill_alloc(name, &device->dev, type,
1659                            &sony_rfkill_ops, (void *)nc_type);
1660         if (!rfk)
1661                 return -ENOMEM;
1662 
1663         if (sony_call_snc_handle(sony_rfkill_handle, 0x200, &result) < 0) {
1664                 rfkill_destroy(rfk);
1665                 return -1;
1666         }
1667         hwblock = !(result & 0x1);
1668 
1669         if (sony_call_snc_handle(sony_rfkill_handle,
1670                                 sony_rfkill_address[nc_type],
1671                                 &result) < 0) {
1672                 rfkill_destroy(rfk);
1673                 return -1;
1674         }
1675         swblock = !(result & 0x2);
1676 
1677         rfkill_init_sw_state(rfk, swblock);
1678         rfkill_set_hw_state(rfk, hwblock);
1679 
1680         err = rfkill_register(rfk);
1681         if (err) {
1682                 rfkill_destroy(rfk);
1683                 return err;
1684         }
1685         sony_rfkill_devices[nc_type] = rfk;
1686         return err;
1687 }
1688 
1689 static void sony_nc_rfkill_update(void)
1690 {
1691         enum sony_nc_rfkill i;
1692         int result;
1693         bool hwblock;
1694 
1695         sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
1696         hwblock = !(result & 0x1);
1697 
1698         for (i = 0; i < N_SONY_RFKILL; i++) {
1699                 int argument = sony_rfkill_address[i];
1700 
1701                 if (!sony_rfkill_devices[i])
1702                         continue;
1703 
1704                 if (hwblock) {
1705                         if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) {
1706                                 /* we already know we're blocked */
1707                         }
1708                         continue;
1709                 }
1710 
1711                 sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1712                 rfkill_set_states(sony_rfkill_devices[i],
1713                                   !(result & 0x2), false);
1714         }
1715 }
1716 
1717 static int sony_nc_rfkill_setup(struct acpi_device *device,
1718                 unsigned int handle)
1719 {
1720         u64 offset;
1721         int i;
1722         unsigned char buffer[32] = { 0 };
1723 
1724         offset = sony_find_snc_handle(handle);
1725         sony_rfkill_handle = handle;
1726 
1727         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
1728                         32);
1729         if (i < 0)
1730                 return i;
1731 
1732         /* The buffer is filled with magic numbers describing the devices
1733          * available, 0xff terminates the enumeration.
1734          * Known codes:
1735          *      0x00 WLAN
1736          *      0x10 BLUETOOTH
1737          *      0x20 WWAN GPRS-EDGE
1738          *      0x21 WWAN HSDPA
1739          *      0x22 WWAN EV-DO
1740          *      0x23 WWAN GPS
1741          *      0x25 Gobi WWAN no GPS
1742          *      0x26 Gobi WWAN + GPS
1743          *      0x28 Gobi WWAN no GPS
1744          *      0x29 Gobi WWAN + GPS
1745          *      0x30 WIMAX
1746          *      0x50 Gobi WWAN no GPS
1747          *      0x51 Gobi WWAN + GPS
1748          *      0x70 no SIM card slot
1749          *      0x71 SIM card slot
1750          */
1751         for (i = 0; i < ARRAY_SIZE(buffer); i++) {
1752 
1753                 if (buffer[i] == 0xff)
1754                         break;
1755 
1756                 dprintk("Radio devices, found 0x%.2x\n", buffer[i]);
1757 
1758                 if (buffer[i] == 0 && !sony_rfkill_devices[SONY_WIFI])
1759                         sony_nc_setup_rfkill(device, SONY_WIFI);
1760 
1761                 if (buffer[i] == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH])
1762                         sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
1763 
1764                 if (((0xf0 & buffer[i]) == 0x20 ||
1765                                         (0xf0 & buffer[i]) == 0x50) &&
1766                                 !sony_rfkill_devices[SONY_WWAN])
1767                         sony_nc_setup_rfkill(device, SONY_WWAN);
1768 
1769                 if (buffer[i] == 0x30 && !sony_rfkill_devices[SONY_WIMAX])
1770                         sony_nc_setup_rfkill(device, SONY_WIMAX);
1771         }
1772         return 0;
1773 }
1774 
1775 /* Keyboard backlight feature */
1776 struct kbd_backlight {
1777         unsigned int handle;
1778         unsigned int base;
1779         unsigned int mode;
1780         unsigned int timeout;
1781         unsigned int has_timeout;
1782         struct device_attribute mode_attr;
1783         struct device_attribute timeout_attr;
1784 };
1785 
1786 static struct kbd_backlight *kbdbl_ctl;
1787 
1788 static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value)
1789 {
1790         int result;
1791 
1792         if (value > 2)
1793                 return -EINVAL;
1794 
1795         if (sony_call_snc_handle(kbdbl_ctl->handle,
1796                                 (value << 0x10) | (kbdbl_ctl->base), &result))
1797                 return -EIO;
1798 
1799         /* Try to turn the light on/off immediately */
1800         if (value != 1)
1801                 sony_call_snc_handle(kbdbl_ctl->handle,
1802                                 (value << 0x0f) | (kbdbl_ctl->base + 0x100),
1803                                 &result);
1804 
1805         kbdbl_ctl->mode = value;
1806 
1807         return 0;
1808 }
1809 
1810 static ssize_t sony_nc_kbd_backlight_mode_store(struct device *dev,
1811                 struct device_attribute *attr,
1812                 const char *buffer, size_t count)
1813 {
1814         int ret = 0;
1815         unsigned long value;
1816 
1817         if (count > 31)
1818                 return -EINVAL;
1819 
1820         if (kstrtoul(buffer, 10, &value))
1821                 return -EINVAL;
1822 
1823         ret = __sony_nc_kbd_backlight_mode_set(value);
1824         if (ret < 0)
1825                 return ret;
1826 
1827         return count;
1828 }
1829 
1830 static ssize_t sony_nc_kbd_backlight_mode_show(struct device *dev,
1831                 struct device_attribute *attr, char *buffer)
1832 {
1833         ssize_t count = 0;
1834         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->mode);
1835         return count;
1836 }
1837 
1838 static int __sony_nc_kbd_backlight_timeout_set(u8 value)
1839 {
1840         int result;
1841 
1842         if (value > 3)
1843                 return -EINVAL;
1844 
1845         if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) |
1846                                 (kbdbl_ctl->base + 0x200), &result))
1847                 return -EIO;
1848 
1849         kbdbl_ctl->timeout = value;
1850 
1851         return 0;
1852 }
1853 
1854 static ssize_t sony_nc_kbd_backlight_timeout_store(struct device *dev,
1855                 struct device_attribute *attr,
1856                 const char *buffer, size_t count)
1857 {
1858         int ret = 0;
1859         unsigned long value;
1860 
1861         if (count > 31)
1862                 return -EINVAL;
1863 
1864         if (kstrtoul(buffer, 10, &value))
1865                 return -EINVAL;
1866 
1867         ret = __sony_nc_kbd_backlight_timeout_set(value);
1868         if (ret < 0)
1869                 return ret;
1870 
1871         return count;
1872 }
1873 
1874 static ssize_t sony_nc_kbd_backlight_timeout_show(struct device *dev,
1875                 struct device_attribute *attr, char *buffer)
1876 {
1877         ssize_t count = 0;
1878         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->timeout);
1879         return count;
1880 }
1881 
1882 static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
1883                 unsigned int handle)
1884 {
1885         int result;
1886         int probe_base = 0;
1887         int ctl_base = 0;
1888         int ret = 0;
1889 
1890         if (kbdbl_ctl) {
1891                 pr_warn("handle 0x%.4x: keyboard backlight setup already done for 0x%.4x\n",
1892                                 handle, kbdbl_ctl->handle);
1893                 return -EBUSY;
1894         }
1895 
1896         /* verify the kbd backlight presence, some of these handles are not used
1897          * for keyboard backlight only
1898          */
1899         switch (handle) {
1900         case 0x0153:
1901                 probe_base = 0x0;
1902                 ctl_base = 0x0;
1903                 break;
1904         case 0x0137:
1905                 probe_base = 0x0B00;
1906                 ctl_base = 0x0C00;
1907                 break;
1908         default:
1909                 probe_base = 0x0100;
1910                 ctl_base = 0x4000;
1911                 break;
1912         }
1913 
1914         ret = sony_call_snc_handle(handle, probe_base, &result);
1915         if (ret)
1916                 return ret;
1917 
1918         if ((handle == 0x0137 && !(result & 0x02)) ||
1919                         !(result & 0x01)) {
1920                 dprintk("no backlight keyboard found\n");
1921                 return 0;
1922         }
1923 
1924         kbdbl_ctl = kzalloc(sizeof(*kbdbl_ctl), GFP_KERNEL);
1925         if (!kbdbl_ctl)
1926                 return -ENOMEM;
1927 
1928         kbdbl_ctl->mode = kbd_backlight;
1929         kbdbl_ctl->timeout = kbd_backlight_timeout;
1930         kbdbl_ctl->handle = handle;
1931         kbdbl_ctl->base = ctl_base;
1932         /* Some models do not allow timeout control */
1933         kbdbl_ctl->has_timeout = handle != 0x0153;
1934 
1935         sysfs_attr_init(&kbdbl_ctl->mode_attr.attr);
1936         kbdbl_ctl->mode_attr.attr.name = "kbd_backlight";
1937         kbdbl_ctl->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
1938         kbdbl_ctl->mode_attr.show = sony_nc_kbd_backlight_mode_show;
1939         kbdbl_ctl->mode_attr.store = sony_nc_kbd_backlight_mode_store;
1940 
1941         ret = device_create_file(&pd->dev, &kbdbl_ctl->mode_attr);
1942         if (ret)
1943                 goto outkzalloc;
1944 
1945         __sony_nc_kbd_backlight_mode_set(kbdbl_ctl->mode);
1946 
1947         if (kbdbl_ctl->has_timeout) {
1948                 sysfs_attr_init(&kbdbl_ctl->timeout_attr.attr);
1949                 kbdbl_ctl->timeout_attr.attr.name = "kbd_backlight_timeout";
1950                 kbdbl_ctl->timeout_attr.attr.mode = S_IRUGO | S_IWUSR;
1951                 kbdbl_ctl->timeout_attr.show =
1952                         sony_nc_kbd_backlight_timeout_show;
1953                 kbdbl_ctl->timeout_attr.store =
1954                         sony_nc_kbd_backlight_timeout_store;
1955 
1956                 ret = device_create_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1957                 if (ret)
1958                         goto outmode;
1959 
1960                 __sony_nc_kbd_backlight_timeout_set(kbdbl_ctl->timeout);
1961         }
1962 
1963 
1964         return 0;
1965 
1966 outmode:
1967         device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1968 outkzalloc:
1969         kfree(kbdbl_ctl);
1970         kbdbl_ctl = NULL;
1971         return ret;
1972 }
1973 
1974 static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
1975                 unsigned int handle)
1976 {
1977         if (kbdbl_ctl && handle == kbdbl_ctl->handle) {
1978                 device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1979                 if (kbdbl_ctl->has_timeout)
1980                         device_remove_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1981                 kfree(kbdbl_ctl);
1982                 kbdbl_ctl = NULL;
1983         }
1984 }
1985 
1986 struct battery_care_control {
1987         struct device_attribute attrs[2];
1988         unsigned int handle;
1989 };
1990 static struct battery_care_control *bcare_ctl;
1991 
1992 static ssize_t sony_nc_battery_care_limit_store(struct device *dev,
1993                 struct device_attribute *attr,
1994                 const char *buffer, size_t count)
1995 {
1996         unsigned int result, cmd;
1997         unsigned long value;
1998 
1999         if (count > 31)
2000                 return -EINVAL;
2001 
2002         if (kstrtoul(buffer, 10, &value))
2003                 return -EINVAL;
2004 
2005         /*  limit values (2 bits):
2006          *  00 - none
2007          *  01 - 80%
2008          *  10 - 50%
2009          *  11 - 100%
2010          *
2011          *  bit 0: 0 disable BCL, 1 enable BCL
2012          *  bit 1: 1 tell to store the battery limit (see bits 6,7) too
2013          *  bits 2,3: reserved
2014          *  bits 4,5: store the limit into the EC
2015          *  bits 6,7: store the limit into the battery
2016          */
2017         cmd = 0;
2018 
2019         if (value > 0) {
2020                 if (value <= 50)
2021                         cmd = 0x20;
2022 
2023                 else if (value <= 80)
2024                         cmd = 0x10;
2025 
2026                 else if (value <= 100)
2027                         cmd = 0x30;
2028 
2029                 else
2030                         return -EINVAL;
2031 
2032                 /*
2033                  * handle 0x0115 should allow storing on battery too;
2034                  * handle 0x0136 same as 0x0115 + health status;
2035                  * handle 0x013f, same as 0x0136 but no storing on the battery
2036                  */
2037                 if (bcare_ctl->handle != 0x013f)
2038                         cmd = cmd | (cmd << 2);
2039 
2040                 cmd = (cmd | 0x1) << 0x10;
2041         }
2042 
2043         if (sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result))
2044                 return -EIO;
2045 
2046         return count;
2047 }
2048 
2049 static ssize_t sony_nc_battery_care_limit_show(struct device *dev,
2050                 struct device_attribute *attr, char *buffer)
2051 {
2052         unsigned int result, status;
2053 
2054         if (sony_call_snc_handle(bcare_ctl->handle, 0x0000, &result))
2055                 return -EIO;
2056 
2057         status = (result & 0x01) ? ((result & 0x30) >> 0x04) : 0;
2058         switch (status) {
2059         case 1:
2060                 status = 80;
2061                 break;
2062         case 2:
2063                 status = 50;
2064                 break;
2065         case 3:
2066                 status = 100;
2067                 break;
2068         default:
2069                 status = 0;
2070                 break;
2071         }
2072 
2073         return snprintf(buffer, PAGE_SIZE, "%d\n", status);
2074 }
2075 
2076 static ssize_t sony_nc_battery_care_health_show(struct device *dev,
2077                 struct device_attribute *attr, char *buffer)
2078 {
2079         ssize_t count = 0;
2080         unsigned int health;
2081 
2082         if (sony_call_snc_handle(bcare_ctl->handle, 0x0200, &health))
2083                 return -EIO;
2084 
2085         count = snprintf(buffer, PAGE_SIZE, "%d\n", health & 0xff);
2086 
2087         return count;
2088 }
2089 
2090 static int sony_nc_battery_care_setup(struct platform_device *pd,
2091                 unsigned int handle)
2092 {
2093         int ret = 0;
2094 
2095         bcare_ctl = kzalloc(sizeof(struct battery_care_control), GFP_KERNEL);
2096         if (!bcare_ctl)
2097                 return -ENOMEM;
2098 
2099         bcare_ctl->handle = handle;
2100 
2101         sysfs_attr_init(&bcare_ctl->attrs[0].attr);
2102         bcare_ctl->attrs[0].attr.name = "battery_care_limiter";
2103         bcare_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
2104         bcare_ctl->attrs[0].show = sony_nc_battery_care_limit_show;
2105         bcare_ctl->attrs[0].store = sony_nc_battery_care_limit_store;
2106 
2107         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[0]);
2108         if (ret)
2109                 goto outkzalloc;
2110 
2111         /* 0x0115 is for models with no health reporting capability */
2112         if (handle == 0x0115)
2113                 return 0;
2114 
2115         sysfs_attr_init(&bcare_ctl->attrs[1].attr);
2116         bcare_ctl->attrs[1].attr.name = "battery_care_health";
2117         bcare_ctl->attrs[1].attr.mode = S_IRUGO;
2118         bcare_ctl->attrs[1].show = sony_nc_battery_care_health_show;
2119 
2120         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[1]);
2121         if (ret)
2122                 goto outlimiter;
2123 
2124         return 0;
2125 
2126 outlimiter:
2127         device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2128 
2129 outkzalloc:
2130         kfree(bcare_ctl);
2131         bcare_ctl = NULL;
2132 
2133         return ret;
2134 }
2135 
2136 static void sony_nc_battery_care_cleanup(struct platform_device *pd)
2137 {
2138         if (bcare_ctl) {
2139                 device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2140                 if (bcare_ctl->handle != 0x0115)
2141                         device_remove_file(&pd->dev, &bcare_ctl->attrs[1]);
2142 
2143                 kfree(bcare_ctl);
2144                 bcare_ctl = NULL;
2145         }
2146 }
2147 
2148 struct snc_thermal_ctrl {
2149         unsigned int mode;
2150         unsigned int profiles;
2151         struct device_attribute mode_attr;
2152         struct device_attribute profiles_attr;
2153 };
2154 static struct snc_thermal_ctrl *th_handle;
2155 
2156 #define THM_PROFILE_MAX 3
2157 static const char * const snc_thermal_profiles[] = {
2158         "balanced",
2159         "silent",
2160         "performance"
2161 };
2162 
2163 static int sony_nc_thermal_mode_set(unsigned short mode)
2164 {
2165         unsigned int result;
2166 
2167         /* the thermal profile seems to be a two bit bitmask:
2168          * lsb -> silent
2169          * msb -> performance
2170          * no bit set is the normal operation and is always valid
2171          * Some vaio models only have "balanced" and "performance"
2172          */
2173         if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
2174                 return -EINVAL;
2175 
2176         if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
2177                 return -EIO;
2178 
2179         th_handle->mode = mode;
2180 
2181         return 0;
2182 }
2183 
2184 static int sony_nc_thermal_mode_get(void)
2185 {
2186         unsigned int result;
2187 
2188         if (sony_call_snc_handle(0x0122, 0x0100, &result))
2189                 return -EIO;
2190 
2191         return result & 0xff;
2192 }
2193 
2194 static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
2195                 struct device_attribute *attr, char *buffer)
2196 {
2197         short cnt;
2198         size_t idx = 0;
2199 
2200         for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
2201                 if (!cnt || (th_handle->profiles & cnt))
2202                         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
2203                                         snc_thermal_profiles[cnt]);
2204         }
2205         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
2206 
2207         return idx;
2208 }
2209 
2210 static ssize_t sony_nc_thermal_mode_store(struct device *dev,
2211                 struct device_attribute *attr,
2212                 const char *buffer, size_t count)
2213 {
2214         unsigned short cmd;
2215         size_t len = count;
2216 
2217         if (count == 0)
2218                 return -EINVAL;
2219 
2220         /* skip the newline if present */
2221         if (buffer[len - 1] == '\n')
2222                 len--;
2223 
2224         for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
2225                 if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
2226                         break;
2227 
2228         if (sony_nc_thermal_mode_set(cmd))
2229                 return -EIO;
2230 
2231         return count;
2232 }
2233 
2234 static ssize_t sony_nc_thermal_mode_show(struct device *dev,
2235                 struct device_attribute *attr, char *buffer)
2236 {
2237         ssize_t count = 0;
2238         int mode = sony_nc_thermal_mode_get();
2239 
2240         if (mode < 0)
2241                 return mode;
2242 
2243         count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
2244 
2245         return count;
2246 }
2247 
2248 static int sony_nc_thermal_setup(struct platform_device *pd)
2249 {
2250         int ret = 0;
2251         th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
2252         if (!th_handle)
2253                 return -ENOMEM;
2254 
2255         ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
2256         if (ret) {
2257                 pr_warn("couldn't to read the thermal profiles\n");
2258                 goto outkzalloc;
2259         }
2260 
2261         ret = sony_nc_thermal_mode_get();
2262         if (ret < 0) {
2263                 pr_warn("couldn't to read the current thermal profile");
2264                 goto outkzalloc;
2265         }
2266         th_handle->mode = ret;
2267 
2268         sysfs_attr_init(&th_handle->profiles_attr.attr);
2269         th_handle->profiles_attr.attr.name = "thermal_profiles";
2270         th_handle->profiles_attr.attr.mode = S_IRUGO;
2271         th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
2272 
2273         sysfs_attr_init(&th_handle->mode_attr.attr);
2274         th_handle->mode_attr.attr.name = "thermal_control";
2275         th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
2276         th_handle->mode_attr.show = sony_nc_thermal_mode_show;
2277         th_handle->mode_attr.store = sony_nc_thermal_mode_store;
2278 
2279         ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
2280         if (ret)
2281                 goto outkzalloc;
2282 
2283         ret = device_create_file(&pd->dev, &th_handle->mode_attr);
2284         if (ret)
2285                 goto outprofiles;
2286 
2287         return 0;
2288 
2289 outprofiles:
2290         device_remove_file(&pd->dev, &th_handle->profiles_attr);
2291 outkzalloc:
2292         kfree(th_handle);
2293         th_handle = NULL;
2294         return ret;
2295 }
2296 
2297 static void sony_nc_thermal_cleanup(struct platform_device *pd)
2298 {
2299         if (th_handle) {
2300                 device_remove_file(&pd->dev, &th_handle->profiles_attr);
2301                 device_remove_file(&pd->dev, &th_handle->mode_attr);
2302                 kfree(th_handle);
2303                 th_handle = NULL;
2304         }
2305 }
2306 
2307 #ifdef CONFIG_PM_SLEEP
2308 static void sony_nc_thermal_resume(void)
2309 {
2310         unsigned int status = sony_nc_thermal_mode_get();
2311 
2312         if (status != th_handle->mode)
2313                 sony_nc_thermal_mode_set(th_handle->mode);
2314 }
2315 #endif
2316 
2317 /* resume on LID open */
2318 #define LID_RESUME_S5   0
2319 #define LID_RESUME_S4   1
2320 #define LID_RESUME_S3   2
2321 #define LID_RESUME_MAX  3
2322 struct snc_lid_resume_control {
2323         struct device_attribute attrs[LID_RESUME_MAX];
2324         unsigned int status;
2325         int handle;
2326 };
2327 static struct snc_lid_resume_control *lid_ctl;
2328 
2329 static ssize_t sony_nc_lid_resume_store(struct device *dev,
2330                                         struct device_attribute *attr,
2331                                         const char *buffer, size_t count)
2332 {
2333         unsigned int result;
2334         unsigned long value;
2335         unsigned int pos = LID_RESUME_S5;
2336         if (count > 31)
2337                 return -EINVAL;
2338 
2339         if (kstrtoul(buffer, 10, &value) || value > 1)
2340                 return -EINVAL;
2341 
2342         /* the value we have to write to SNC is a bitmask:
2343          * +--------------+
2344          * | S3 | S4 | S5 |
2345          * +--------------+
2346          *   2    1    0
2347          */
2348         while (pos < LID_RESUME_MAX) {
2349                 if (&lid_ctl->attrs[pos].attr == &attr->attr)
2350                         break;
2351                 pos++;
2352         }
2353         if (pos == LID_RESUME_MAX)
2354                 return -EINVAL;
2355 
2356         if (value)
2357                 value = lid_ctl->status | (1 << pos);
2358         else
2359                 value = lid_ctl->status & ~(1 << pos);
2360 
2361         if (sony_call_snc_handle(lid_ctl->handle, value << 0x10 | 0x0100,
2362                                 &result))
2363                 return -EIO;
2364 
2365         lid_ctl->status = value;
2366 
2367         return count;
2368 }
2369 
2370 static ssize_t sony_nc_lid_resume_show(struct device *dev,
2371                                         struct device_attribute *attr,
2372                                         char *buffer)
2373 {
2374         unsigned int pos = LID_RESUME_S5;
2375 
2376         while (pos < LID_RESUME_MAX) {
2377                 if (&lid_ctl->attrs[pos].attr == &attr->attr)
2378                         return snprintf(buffer, PAGE_SIZE, "%d\n",
2379                                         (lid_ctl->status >> pos) & 0x01);
2380                 pos++;
2381         }
2382         return -EINVAL;
2383 }
2384 
2385 static int sony_nc_lid_resume_setup(struct platform_device *pd,
2386                                         unsigned int handle)
2387 {
2388         unsigned int result;
2389         int i;
2390 
2391         if (sony_call_snc_handle(handle, 0x0000, &result))
2392                 return -EIO;
2393 
2394         lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
2395         if (!lid_ctl)
2396                 return -ENOMEM;
2397 
2398         lid_ctl->status = result & 0x7;
2399         lid_ctl->handle = handle;
2400 
2401         sysfs_attr_init(&lid_ctl->attrs[0].attr);
2402         lid_ctl->attrs[LID_RESUME_S5].attr.name = "lid_resume_S5";
2403         lid_ctl->attrs[LID_RESUME_S5].attr.mode = S_IRUGO | S_IWUSR;
2404         lid_ctl->attrs[LID_RESUME_S5].show = sony_nc_lid_resume_show;
2405         lid_ctl->attrs[LID_RESUME_S5].store = sony_nc_lid_resume_store;
2406 
2407         if (handle == 0x0119) {
2408                 sysfs_attr_init(&lid_ctl->attrs[1].attr);
2409                 lid_ctl->attrs[LID_RESUME_S4].attr.name = "lid_resume_S4";
2410                 lid_ctl->attrs[LID_RESUME_S4].attr.mode = S_IRUGO | S_IWUSR;
2411                 lid_ctl->attrs[LID_RESUME_S4].show = sony_nc_lid_resume_show;
2412                 lid_ctl->attrs[LID_RESUME_S4].store = sony_nc_lid_resume_store;
2413 
2414                 sysfs_attr_init(&lid_ctl->attrs[2].attr);
2415                 lid_ctl->attrs[LID_RESUME_S3].attr.name = "lid_resume_S3";
2416                 lid_ctl->attrs[LID_RESUME_S3].attr.mode = S_IRUGO | S_IWUSR;
2417                 lid_ctl->attrs[LID_RESUME_S3].show = sony_nc_lid_resume_show;
2418                 lid_ctl->attrs[LID_RESUME_S3].store = sony_nc_lid_resume_store;
2419         }
2420         for (i = 0; i < LID_RESUME_MAX &&
2421                         lid_ctl->attrs[i].attr.name; i++) {
2422                 result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
2423                 if (result)
2424                         goto liderror;
2425         }
2426 
2427         return 0;
2428 
2429 liderror:
2430         for (i--; i >= 0; i--)
2431                 device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2432 
2433         kfree(lid_ctl);
2434         lid_ctl = NULL;
2435 
2436         return result;
2437 }
2438 
2439 static void sony_nc_lid_resume_cleanup(struct platform_device *pd)
2440 {
2441         int i;
2442 
2443         if (lid_ctl) {
2444                 for (i = 0; i < LID_RESUME_MAX; i++) {
2445                         if (!lid_ctl->attrs[i].attr.name)
2446                                 break;
2447 
2448                         device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2449                 }
2450 
2451                 kfree(lid_ctl);
2452                 lid_ctl = NULL;
2453         }
2454 }
2455 
2456 /* GFX Switch position */
2457 enum gfx_switch {
2458         SPEED,
2459         STAMINA,
2460         AUTO
2461 };
2462 struct snc_gfx_switch_control {
2463         struct device_attribute attr;
2464         unsigned int handle;
2465 };
2466 static struct snc_gfx_switch_control *gfxs_ctl;
2467 
2468 /* returns 0 for speed, 1 for stamina */
2469 static int __sony_nc_gfx_switch_status_get(void)
2470 {
2471         unsigned int result;
2472 
2473         if (sony_call_snc_handle(gfxs_ctl->handle,
2474                                 gfxs_ctl->handle == 0x015B ? 0x0000 : 0x0100,
2475                                 &result))
2476                 return -EIO;
2477 
2478         switch (gfxs_ctl->handle) {
2479         case 0x0146:
2480                 /* 1: discrete GFX (speed)
2481                  * 0: integrated GFX (stamina)
2482                  */
2483                 return result & 0x1 ? SPEED : STAMINA;
2484                 break;
2485         case 0x015B:
2486                 /* 0: discrete GFX (speed)
2487                  * 1: integrated GFX (stamina)
2488                  */
2489                 return result & 0x1 ? STAMINA : SPEED;
2490                 break;
2491         case 0x0128:
2492                 /* it's a more elaborated bitmask, for now:
2493                  * 2: integrated GFX (stamina)
2494                  * 0: discrete GFX (speed)
2495                  */
2496                 dprintk("GFX Status: 0x%x\n", result);
2497                 return result & 0x80 ? AUTO :
2498                         result & 0x02 ? STAMINA : SPEED;
2499                 break;
2500         }
2501         return -EINVAL;
2502 }
2503 
2504 static ssize_t sony_nc_gfx_switch_status_show(struct device *dev,
2505                                        struct device_attribute *attr,
2506                                        char *buffer)
2507 {
2508         int pos = __sony_nc_gfx_switch_status_get();
2509 
2510         if (pos < 0)
2511                 return pos;
2512 
2513         return snprintf(buffer, PAGE_SIZE, "%s\n",
2514                                         pos == SPEED ? "speed" :
2515                                         pos == STAMINA ? "stamina" :
2516                                         pos == AUTO ? "auto" : "unknown");
2517 }
2518 
2519 static int sony_nc_gfx_switch_setup(struct platform_device *pd,
2520                 unsigned int handle)
2521 {
2522         unsigned int result;
2523 
2524         gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL);
2525         if (!gfxs_ctl)
2526                 return -ENOMEM;
2527 
2528         gfxs_ctl->handle = handle;
2529 
2530         sysfs_attr_init(&gfxs_ctl->attr.attr);
2531         gfxs_ctl->attr.attr.name = "gfx_switch_status";
2532         gfxs_ctl->attr.attr.mode = S_IRUGO;
2533         gfxs_ctl->attr.show = sony_nc_gfx_switch_status_show;
2534 
2535         result = device_create_file(&pd->dev, &gfxs_ctl->attr);
2536         if (result)
2537                 goto gfxerror;
2538 
2539         return 0;
2540 
2541 gfxerror:
2542         kfree(gfxs_ctl);
2543         gfxs_ctl = NULL;
2544 
2545         return result;
2546 }
2547 
2548 static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
2549 {
2550         if (gfxs_ctl) {
2551                 device_remove_file(&pd->dev, &gfxs_ctl->attr);
2552 
2553                 kfree(gfxs_ctl);
2554                 gfxs_ctl = NULL;
2555         }
2556 }
2557 
2558 /* High speed charging function */
2559 static struct device_attribute *hsc_handle;
2560 
2561 static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
2562                 struct device_attribute *attr,
2563                 const char *buffer, size_t count)
2564 {
2565         unsigned int result;
2566         unsigned long value;
2567 
2568         if (count > 31)
2569                 return -EINVAL;
2570 
2571         if (kstrtoul(buffer, 10, &value) || value > 1)
2572                 return -EINVAL;
2573 
2574         if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))
2575                 return -EIO;
2576 
2577         return count;
2578 }
2579 
2580 static ssize_t sony_nc_highspeed_charging_show(struct device *dev,
2581                 struct device_attribute *attr, char *buffer)
2582 {
2583         unsigned int result;
2584 
2585         if (sony_call_snc_handle(0x0131, 0x0100, &result))
2586                 return -EIO;
2587 
2588         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2589 }
2590 
2591 static int sony_nc_highspeed_charging_setup(struct platform_device *pd)
2592 {
2593         unsigned int result;
2594 
2595         if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {
2596                 /* some models advertise the handle but have no implementation
2597                  * for it
2598                  */
2599                 pr_info("No High Speed Charging capability found\n");
2600                 return 0;
2601         }
2602 
2603         hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2604         if (!hsc_handle)
2605                 return -ENOMEM;
2606 
2607         sysfs_attr_init(&hsc_handle->attr);
2608         hsc_handle->attr.name = "battery_highspeed_charging";
2609         hsc_handle->attr.mode = S_IRUGO | S_IWUSR;
2610         hsc_handle->show = sony_nc_highspeed_charging_show;
2611         hsc_handle->store = sony_nc_highspeed_charging_store;
2612 
2613         result = device_create_file(&pd->dev, hsc_handle);
2614         if (result) {
2615                 kfree(hsc_handle);
2616                 hsc_handle = NULL;
2617                 return result;
2618         }
2619 
2620         return 0;
2621 }
2622 
2623 static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
2624 {
2625         if (hsc_handle) {
2626                 device_remove_file(&pd->dev, hsc_handle);
2627                 kfree(hsc_handle);
2628                 hsc_handle = NULL;
2629         }
2630 }
2631 
2632 /* low battery function */
2633 static struct device_attribute *lowbatt_handle;
2634 
2635 static ssize_t sony_nc_lowbatt_store(struct device *dev,
2636                 struct device_attribute *attr,
2637                 const char *buffer, size_t count)
2638 {
2639         unsigned int result;
2640         unsigned long value;
2641 
2642         if (count > 31)
2643                 return -EINVAL;
2644 
2645         if (kstrtoul(buffer, 10, &value) || value > 1)
2646                 return -EINVAL;
2647 
2648         if (sony_call_snc_handle(0x0121, value << 8, &result))
2649                 return -EIO;
2650 
2651         return count;
2652 }
2653 
2654 static ssize_t sony_nc_lowbatt_show(struct device *dev,
2655                 struct device_attribute *attr, char *buffer)
2656 {
2657         unsigned int result;
2658 
2659         if (sony_call_snc_handle(0x0121, 0x0200, &result))
2660                 return -EIO;
2661 
2662         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 1);
2663 }
2664 
2665 static int sony_nc_lowbatt_setup(struct platform_device *pd)
2666 {
2667         unsigned int result;
2668 
2669         lowbatt_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2670         if (!lowbatt_handle)
2671                 return -ENOMEM;
2672 
2673         sysfs_attr_init(&lowbatt_handle->attr);
2674         lowbatt_handle->attr.name = "lowbatt_hibernate";
2675         lowbatt_handle->attr.mode = S_IRUGO | S_IWUSR;
2676         lowbatt_handle->show = sony_nc_lowbatt_show;
2677         lowbatt_handle->store = sony_nc_lowbatt_store;
2678 
2679         result = device_create_file(&pd->dev, lowbatt_handle);
2680         if (result) {
2681                 kfree(lowbatt_handle);
2682                 lowbatt_handle = NULL;
2683                 return result;
2684         }
2685 
2686         return 0;
2687 }
2688 
2689 static void sony_nc_lowbatt_cleanup(struct platform_device *pd)
2690 {
2691         if (lowbatt_handle) {
2692                 device_remove_file(&pd->dev, lowbatt_handle);
2693                 kfree(lowbatt_handle);
2694                 lowbatt_handle = NULL;
2695         }
2696 }
2697 
2698 /* fan speed function */
2699 static struct device_attribute *fan_handle, *hsf_handle;
2700 
2701 static ssize_t sony_nc_hsfan_store(struct device *dev,
2702                 struct device_attribute *attr,
2703                 const char *buffer, size_t count)
2704 {
2705         unsigned int result;
2706         unsigned long value;
2707 
2708         if (count > 31)
2709                 return -EINVAL;
2710 
2711         if (kstrtoul(buffer, 10, &value) || value > 1)
2712                 return -EINVAL;
2713 
2714         if (sony_call_snc_handle(0x0149, value << 0x10 | 0x0200, &result))
2715                 return -EIO;
2716 
2717         return count;
2718 }
2719 
2720 static ssize_t sony_nc_hsfan_show(struct device *dev,
2721                 struct device_attribute *attr, char *buffer)
2722 {
2723         unsigned int result;
2724 
2725         if (sony_call_snc_handle(0x0149, 0x0100, &result))
2726                 return -EIO;
2727 
2728         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2729 }
2730 
2731 static ssize_t sony_nc_fanspeed_show(struct device *dev,
2732                 struct device_attribute *attr, char *buffer)
2733 {
2734         unsigned int result;
2735 
2736         if (sony_call_snc_handle(0x0149, 0x0300, &result))
2737                 return -EIO;
2738 
2739         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0xff);
2740 }
2741 
2742 static int sony_nc_fanspeed_setup(struct platform_device *pd)
2743 {
2744         unsigned int result;
2745 
2746         fan_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2747         if (!fan_handle)
2748                 return -ENOMEM;
2749 
2750         hsf_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2751         if (!hsf_handle) {
2752                 result = -ENOMEM;
2753                 goto out_hsf_handle_alloc;
2754         }
2755 
2756         sysfs_attr_init(&fan_handle->attr);
2757         fan_handle->attr.name = "fanspeed";
2758         fan_handle->attr.mode = S_IRUGO;
2759         fan_handle->show = sony_nc_fanspeed_show;
2760         fan_handle->store = NULL;
2761 
2762         sysfs_attr_init(&hsf_handle->attr);
2763         hsf_handle->attr.name = "fan_forced";
2764         hsf_handle->attr.mode = S_IRUGO | S_IWUSR;
2765         hsf_handle->show = sony_nc_hsfan_show;
2766         hsf_handle->store = sony_nc_hsfan_store;
2767 
2768         result = device_create_file(&pd->dev, fan_handle);
2769         if (result)
2770                 goto out_fan_handle;
2771 
2772         result = device_create_file(&pd->dev, hsf_handle);
2773         if (result)
2774                 goto out_hsf_handle;
2775 
2776         return 0;
2777 
2778 out_hsf_handle:
2779         device_remove_file(&pd->dev, fan_handle);
2780 
2781 out_fan_handle:
2782         kfree(hsf_handle);
2783         hsf_handle = NULL;
2784 
2785 out_hsf_handle_alloc:
2786         kfree(fan_handle);
2787         fan_handle = NULL;
2788         return result;
2789 }
2790 
2791 static void sony_nc_fanspeed_cleanup(struct platform_device *pd)
2792 {
2793         if (fan_handle) {
2794                 device_remove_file(&pd->dev, fan_handle);
2795                 kfree(fan_handle);
2796                 fan_handle = NULL;
2797         }
2798         if (hsf_handle) {
2799                 device_remove_file(&pd->dev, hsf_handle);
2800                 kfree(hsf_handle);
2801                 hsf_handle = NULL;
2802         }
2803 }
2804 
2805 /* USB charge function */
2806 static struct device_attribute *uc_handle;
2807 
2808 static ssize_t sony_nc_usb_charge_store(struct device *dev,
2809                 struct device_attribute *attr,
2810                 const char *buffer, size_t count)
2811 {
2812         unsigned int result;
2813         unsigned long value;
2814 
2815         if (count > 31)
2816                 return -EINVAL;
2817 
2818         if (kstrtoul(buffer, 10, &value) || value > 1)
2819                 return -EINVAL;
2820 
2821         if (sony_call_snc_handle(0x0155, value << 0x10 | 0x0100, &result))
2822                 return -EIO;
2823 
2824         return count;
2825 }
2826 
2827 static ssize_t sony_nc_usb_charge_show(struct device *dev,
2828                 struct device_attribute *attr, char *buffer)
2829 {
2830         unsigned int result;
2831 
2832         if (sony_call_snc_handle(0x0155, 0x0000, &result))
2833                 return -EIO;
2834 
2835         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2836 }
2837 
2838 static int sony_nc_usb_charge_setup(struct platform_device *pd)
2839 {
2840         unsigned int result;
2841 
2842         if (sony_call_snc_handle(0x0155, 0x0000, &result) || !(result & 0x01)) {
2843                 /* some models advertise the handle but have no implementation
2844                  * for it
2845                  */
2846                 pr_info("No USB Charge capability found\n");
2847                 return 0;
2848         }
2849 
2850         uc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2851         if (!uc_handle)
2852                 return -ENOMEM;
2853 
2854         sysfs_attr_init(&uc_handle->attr);
2855         uc_handle->attr.name = "usb_charge";
2856         uc_handle->attr.mode = S_IRUGO | S_IWUSR;
2857         uc_handle->show = sony_nc_usb_charge_show;
2858         uc_handle->store = sony_nc_usb_charge_store;
2859 
2860         result = device_create_file(&pd->dev, uc_handle);
2861         if (result) {
2862                 kfree(uc_handle);
2863                 uc_handle = NULL;
2864                 return result;
2865         }
2866 
2867         return 0;
2868 }
2869 
2870 static void sony_nc_usb_charge_cleanup(struct platform_device *pd)
2871 {
2872         if (uc_handle) {
2873                 device_remove_file(&pd->dev, uc_handle);
2874                 kfree(uc_handle);
2875                 uc_handle = NULL;
2876         }
2877 }
2878 
2879 /* Panel ID function */
2880 static struct device_attribute *panel_handle;
2881 
2882 static ssize_t sony_nc_panelid_show(struct device *dev,
2883                 struct device_attribute *attr, char *buffer)
2884 {
2885         unsigned int result;
2886 
2887         if (sony_call_snc_handle(0x011D, 0x0000, &result))
2888                 return -EIO;
2889 
2890         return snprintf(buffer, PAGE_SIZE, "%d\n", result);
2891 }
2892 
2893 static int sony_nc_panelid_setup(struct platform_device *pd)
2894 {
2895         unsigned int result;
2896 
2897         panel_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2898         if (!panel_handle)
2899                 return -ENOMEM;
2900 
2901         sysfs_attr_init(&panel_handle->attr);
2902         panel_handle->attr.name = "panel_id";
2903         panel_handle->attr.mode = S_IRUGO;
2904         panel_handle->show = sony_nc_panelid_show;
2905         panel_handle->store = NULL;
2906 
2907         result = device_create_file(&pd->dev, panel_handle);
2908         if (result) {
2909                 kfree(panel_handle);
2910                 panel_handle = NULL;
2911                 return result;
2912         }
2913 
2914         return 0;
2915 }
2916 
2917 static void sony_nc_panelid_cleanup(struct platform_device *pd)
2918 {
2919         if (panel_handle) {
2920                 device_remove_file(&pd->dev, panel_handle);
2921                 kfree(panel_handle);
2922                 panel_handle = NULL;
2923         }
2924 }
2925 
2926 /* smart connect function */
2927 static struct device_attribute *sc_handle;
2928 
2929 static ssize_t sony_nc_smart_conn_store(struct device *dev,
2930                 struct device_attribute *attr,
2931                 const char *buffer, size_t count)
2932 {
2933         unsigned int result;
2934         unsigned long value;
2935 
2936         if (count > 31)
2937                 return -EINVAL;
2938 
2939         if (kstrtoul(buffer, 10, &value) || value > 1)
2940                 return -EINVAL;
2941 
2942         if (sony_call_snc_handle(0x0168, value << 0x10, &result))
2943                 return -EIO;
2944 
2945         return count;
2946 }
2947 
2948 static int sony_nc_smart_conn_setup(struct platform_device *pd)
2949 {
2950         unsigned int result;
2951 
2952         sc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2953         if (!sc_handle)
2954                 return -ENOMEM;
2955 
2956         sysfs_attr_init(&sc_handle->attr);
2957         sc_handle->attr.name = "smart_connect";
2958         sc_handle->attr.mode = S_IWUSR;
2959         sc_handle->show = NULL;
2960         sc_handle->store = sony_nc_smart_conn_store;
2961 
2962         result = device_create_file(&pd->dev, sc_handle);
2963         if (result) {
2964                 kfree(sc_handle);
2965                 sc_handle = NULL;
2966                 return result;
2967         }
2968 
2969         return 0;
2970 }
2971 
2972 static void sony_nc_smart_conn_cleanup(struct platform_device *pd)
2973 {
2974         if (sc_handle) {
2975                 device_remove_file(&pd->dev, sc_handle);
2976                 kfree(sc_handle);
2977                 sc_handle = NULL;
2978         }
2979 }
2980 
2981 /* Touchpad enable/disable */
2982 struct touchpad_control {
2983         struct device_attribute attr;
2984         int handle;
2985 };
2986 static struct touchpad_control *tp_ctl;
2987 
2988 static ssize_t sony_nc_touchpad_store(struct device *dev,
2989                 struct device_attribute *attr, const char *buffer, size_t count)
2990 {
2991         unsigned int result;
2992         unsigned long value;
2993 
2994         if (count > 31)
2995                 return -EINVAL;
2996 
2997         if (kstrtoul(buffer, 10, &value) || value > 1)
2998                 return -EINVAL;
2999 
3000         /* sysfs: 0 disabled, 1 enabled
3001          * EC: 0 enabled, 1 disabled
3002          */
3003         if (sony_call_snc_handle(tp_ctl->handle,
3004                                 (!value << 0x10) | 0x100, &result))
3005                 return -EIO;
3006 
3007         return count;
3008 }
3009 
3010 static ssize_t sony_nc_touchpad_show(struct device *dev,
3011                 struct device_attribute *attr, char *buffer)
3012 {
3013         unsigned int result;
3014 
3015         if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))
3016                 return -EINVAL;
3017 
3018         return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01));
3019 }
3020 
3021 static int sony_nc_touchpad_setup(struct platform_device *pd,
3022                 unsigned int handle)
3023 {
3024         int ret = 0;
3025 
3026         tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
3027         if (!tp_ctl)
3028                 return -ENOMEM;
3029 
3030         tp_ctl->handle = handle;
3031 
3032         sysfs_attr_init(&tp_ctl->attr.attr);
3033         tp_ctl->attr.attr.name = "touchpad";
3034         tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
3035         tp_ctl->attr.show = sony_nc_touchpad_show;
3036         tp_ctl->attr.store = sony_nc_touchpad_store;
3037 
3038         ret = device_create_file(&pd->dev, &tp_ctl->attr);
3039         if (ret) {
3040                 kfree(tp_ctl);
3041                 tp_ctl = NULL;
3042         }
3043 
3044         return ret;
3045 }
3046 
3047 static void sony_nc_touchpad_cleanup(struct platform_device *pd)
3048 {
3049         if (tp_ctl) {
3050                 device_remove_file(&pd->dev, &tp_ctl->attr);
3051                 kfree(tp_ctl);
3052                 tp_ctl = NULL;
3053         }
3054 }
3055 
3056 static void sony_nc_backlight_ng_read_limits(int handle,
3057                 struct sony_backlight_props *props)
3058 {
3059         u64 offset;
3060         int i;
3061         int lvl_table_len = 0;
3062         u8 min = 0xff, max = 0x00;
3063         unsigned char buffer[32] = { 0 };
3064 
3065         props->handle = handle;
3066         props->offset = 0;
3067         props->maxlvl = 0xff;
3068 
3069         offset = sony_find_snc_handle(handle);
3070 
3071         /* try to read the boundaries from ACPI tables, if we fail the above
3072          * defaults should be reasonable
3073          */
3074         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
3075                         32);
3076         if (i < 0)
3077                 return;
3078 
3079         switch (handle) {
3080         case 0x012f:
3081         case 0x0137:
3082                 lvl_table_len = 9;
3083                 break;
3084         case 0x143:
3085         case 0x14b:
3086         case 0x14c:
3087                 lvl_table_len = 16;
3088                 break;
3089         }
3090 
3091         /* the buffer lists brightness levels available, brightness levels are
3092          * from position 0 to 8 in the array, other values are used by ALS
3093          * control.
3094          */
3095         for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {
3096 
3097                 dprintk("Brightness level: %d\n", buffer[i]);
3098 
3099                 if (!buffer[i])
3100                         break;
3101 
3102                 if (buffer[i] > max)
3103                         max = buffer[i];
3104                 if (buffer[i] < min)
3105                         min = buffer[i];
3106         }
3107         props->offset = min;
3108         props->maxlvl = max;
3109         dprintk("Brightness levels: min=%d max=%d\n", props->offset,
3110                         props->maxlvl);
3111 }
3112 
3113 static void sony_nc_backlight_setup(void)
3114 {
3115         int max_brightness = 0;
3116         const struct backlight_ops *ops = NULL;
3117         struct backlight_properties props;
3118 
3119         if (sony_find_snc_handle(0x12f) >= 0) {
3120                 ops = &sony_backlight_ng_ops;
3121                 sony_bl_props.cmd_base = 0x0100;
3122                 sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);
3123                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3124 
3125         } else if (sony_find_snc_handle(0x137) >= 0) {
3126                 ops = &sony_backlight_ng_ops;
3127                 sony_bl_props.cmd_base = 0x0100;
3128                 sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);
3129                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3130 
3131         } else if (sony_find_snc_handle(0x143) >= 0) {
3132                 ops = &sony_backlight_ng_ops;
3133                 sony_bl_props.cmd_base = 0x3000;
3134                 sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);
3135                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3136 
3137         } else if (sony_find_snc_handle(0x14b) >= 0) {
3138                 ops = &sony_backlight_ng_ops;
3139                 sony_bl_props.cmd_base = 0x3000;
3140                 sony_nc_backlight_ng_read_limits(0x14b, &sony_bl_props);
3141                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3142 
3143         } else if (sony_find_snc_handle(0x14c) >= 0) {
3144                 ops = &sony_backlight_ng_ops;
3145                 sony_bl_props.cmd_base = 0x3000;
3146                 sony_nc_backlight_ng_read_limits(0x14c, &sony_bl_props);
3147                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3148 
3149         } else if (acpi_has_method(sony_nc_acpi_handle, "GBRT")) {
3150                 ops = &sony_backlight_ops;
3151                 max_brightness = SONY_MAX_BRIGHTNESS - 1;
3152 
3153         } else
3154                 return;
3155 
3156         memset(&props, 0, sizeof(struct backlight_properties));
3157         props.type = BACKLIGHT_PLATFORM;
3158         props.max_brightness = max_brightness;
3159         sony_bl_props.dev = backlight_device_register("sony", NULL,
3160                                                       &sony_bl_props,
3161                                                       ops, &props);
3162 
3163         if (IS_ERR(sony_bl_props.dev)) {
3164                 pr_warn("unable to register backlight device\n");
3165                 sony_bl_props.dev = NULL;
3166         } else
3167                 sony_bl_props.dev->props.brightness =
3168                         ops->get_brightness(sony_bl_props.dev);
3169 }
3170 
3171 static void sony_nc_backlight_cleanup(void)
3172 {
3173         backlight_device_unregister(sony_bl_props.dev);
3174 }
3175 
3176 static int sony_nc_add(struct acpi_device *device)
3177 {
3178         acpi_status status;
3179         int result = 0;
3180         struct sony_nc_value *item;
3181 
3182         sony_nc_acpi_device = device;
3183         strcpy(acpi_device_class(device), "sony/hotkey");
3184 
3185         sony_nc_acpi_handle = device->handle;
3186 
3187         /* read device status */
3188         result = acpi_bus_get_status(device);
3189         /* bail IFF the above call was successful and the device is not present */
3190         if (!result && !device->status.present) {
3191                 dprintk("Device not present\n");
3192                 result = -ENODEV;
3193                 goto outwalk;
3194         }
3195 
3196         result = sony_pf_add();
3197         if (result)
3198                 goto outpresent;
3199 
3200         if (debug) {
3201                 status = acpi_walk_namespace(ACPI_TYPE_METHOD,
3202                                 sony_nc_acpi_handle, 1, sony_walk_callback,
3203                                 NULL, NULL, NULL);
3204                 if (ACPI_FAILURE(status)) {
3205                         pr_warn("unable to walk acpi resources\n");
3206                         result = -ENODEV;
3207                         goto outpresent;
3208                 }
3209         }
3210 
3211         result = sony_laptop_setup_input(device);
3212         if (result) {
3213                 pr_err("Unable to create input devices\n");
3214                 goto outplatform;
3215         }
3216 
3217         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
3218                 int arg = 1;
3219                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
3220                         dprintk("ECON Method failed\n");
3221         }
3222 
3223         if (acpi_has_method(sony_nc_acpi_handle, "SN00")) {
3224                 dprintk("Doing SNC setup\n");
3225                 /* retrieve the available handles */
3226                 result = sony_nc_handles_setup(sony_pf_device);
3227                 if (!result)
3228                         sony_nc_function_setup(device, sony_pf_device);
3229         }
3230 
3231         if (acpi_video_get_backlight_type() == acpi_backlight_vendor)
3232                 sony_nc_backlight_setup();
3233 
3234         /* create sony_pf sysfs attributes related to the SNC device */
3235         for (item = sony_nc_values; item->name; ++item) {
3236 
3237                 if (!debug && item->debug)
3238                         continue;
3239 
3240                 /* find the available acpiget as described in the DSDT */
3241                 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
3242                         if (acpi_has_method(sony_nc_acpi_handle,
3243                                                         *item->acpiget)) {
3244                                 dprintk("Found %s getter: %s\n",
3245                                                 item->name, *item->acpiget);
3246                                 item->devattr.attr.mode |= S_IRUGO;
3247                                 break;
3248                         }
3249                 }
3250 
3251                 /* find the available acpiset as described in the DSDT */
3252                 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
3253                         if (acpi_has_method(sony_nc_acpi_handle,
3254                                                         *item->acpiset)) {
3255                                 dprintk("Found %s setter: %s\n",
3256                                                 item->name, *item->acpiset);
3257                                 item->devattr.attr.mode |= S_IWUSR;
3258                                 break;
3259                         }
3260                 }
3261 
3262                 if (item->devattr.attr.mode != 0) {
3263                         result =
3264                             device_create_file(&sony_pf_device->dev,
3265                                                &item->devattr);
3266                         if (result)
3267                                 goto out_sysfs;
3268                 }
3269         }
3270 
3271         pr_info("SNC setup done.\n");
3272         return 0;
3273 
3274 out_sysfs:
3275         for (item = sony_nc_values; item->name; ++item) {
3276                 device_remove_file(&sony_pf_device->dev, &item->devattr);
3277         }
3278         sony_nc_backlight_cleanup();
3279         sony_nc_function_cleanup(sony_pf_device);
3280         sony_nc_handles_cleanup(sony_pf_device);
3281 
3282 outplatform:
3283         sony_laptop_remove_input();
3284 
3285 outpresent:
3286         sony_pf_remove();
3287 
3288 outwalk:
3289         sony_nc_rfkill_cleanup();
3290         return result;
3291 }
3292 
3293 static int sony_nc_remove(struct acpi_device *device)
3294 {
3295         struct sony_nc_value *item;
3296 
3297         sony_nc_backlight_cleanup();
3298 
3299         sony_nc_acpi_device = NULL;
3300 
3301         for (item = sony_nc_values; item->name; ++item) {
3302                 device_remove_file(&sony_pf_device->dev, &item->devattr);
3303         }
3304 
3305         sony_nc_function_cleanup(sony_pf_device);
3306         sony_nc_handles_cleanup(sony_pf_device);
3307         sony_pf_remove();
3308         sony_laptop_remove_input();
3309         dprintk(SONY_NC_DRIVER_NAME " removed.\n");
3310 
3311         return 0;
3312 }
3313 
3314 static const struct acpi_device_id sony_device_ids[] = {
3315         {SONY_NC_HID, 0},
3316         {SONY_PIC_HID, 0},
3317         {"", 0},
3318 };
3319 MODULE_DEVICE_TABLE(acpi, sony_device_ids);
3320 
3321 static const struct acpi_device_id sony_nc_device_ids[] = {
3322         {SONY_NC_HID, 0},
3323         {"", 0},
3324 };
3325 
3326 static struct acpi_driver sony_nc_driver = {
3327         .name = SONY_NC_DRIVER_NAME,
3328         .class = SONY_NC_CLASS,
3329         .ids = sony_nc_device_ids,
3330         .owner = THIS_MODULE,
3331         .ops = {
3332                 .add = sony_nc_add,
3333                 .remove = sony_nc_remove,
3334                 .notify = sony_nc_notify,
3335                 },
3336         .drv.pm = &sony_nc_pm,
3337 };
3338 
3339 /*********** SPIC (SNY6001) Device ***********/
3340 
3341 #define SONYPI_DEVICE_TYPE1     0x00000001
3342 #define SONYPI_DEVICE_TYPE2     0x00000002
3343 #define SONYPI_DEVICE_TYPE3     0x00000004
3344 
3345 #define SONYPI_TYPE1_OFFSET     0x04
3346 #define SONYPI_TYPE2_OFFSET     0x12
3347 #define SONYPI_TYPE3_OFFSET     0x12
3348 
3349 struct sony_pic_ioport {
3350         struct acpi_resource_io io1;
3351         struct acpi_resource_io io2;
3352         struct list_head        list;
3353 };
3354 
3355 struct sony_pic_irq {
3356         struct acpi_resource_irq        irq;
3357         struct list_head                list;
3358 };
3359 
3360 struct sonypi_eventtypes {
3361         u8                      data;
3362         unsigned long           mask;
3363         struct sonypi_event     *events;
3364 };
3365 
3366 struct sony_pic_dev {
3367         struct acpi_device              *acpi_dev;
3368         struct sony_pic_irq             *cur_irq;
3369         struct sony_pic_ioport          *cur_ioport;
3370         struct list_head                interrupts;
3371         struct list_head                ioports;
3372         struct mutex                    lock;
3373         struct sonypi_eventtypes        *event_types;
3374         int                             (*handle_irq)(const u8, const u8);
3375         int                             model;
3376         u16                             evport_offset;
3377         u8                              camera_power;
3378         u8                              bluetooth_power;
3379         u8                              wwan_power;
3380 };
3381 
3382 static struct sony_pic_dev spic_dev = {
3383         .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
3384         .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
3385 };
3386 
3387 static int spic_drv_registered;
3388 
3389 /* Event masks */
3390 #define SONYPI_JOGGER_MASK                      0x00000001
3391 #define SONYPI_CAPTURE_MASK                     0x00000002
3392 #define SONYPI_FNKEY_MASK                       0x00000004
3393 #define SONYPI_BLUETOOTH_MASK                   0x00000008
3394 #define SONYPI_PKEY_MASK                        0x00000010
3395 #define SONYPI_BACK_MASK                        0x00000020
3396 #define SONYPI_HELP_MASK                        0x00000040
3397 #define SONYPI_LID_MASK                         0x00000080
3398 #define SONYPI_ZOOM_MASK                        0x00000100
3399 #define SONYPI_THUMBPHRASE_MASK                 0x00000200
3400 #define SONYPI_MEYE_MASK                        0x00000400
3401 #define SONYPI_MEMORYSTICK_MASK                 0x00000800
3402 #define SONYPI_BATTERY_MASK                     0x00001000
3403 #define SONYPI_WIRELESS_MASK                    0x00002000
3404 
3405 struct sonypi_event {
3406         u8      data;
3407         u8      event;
3408 };
3409 
3410 /* The set of possible button release events */
3411 static struct sonypi_event sonypi_releaseev[] = {
3412         { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
3413         { 0, 0 }
3414 };
3415 
3416 /* The set of possible jogger events  */
3417 static struct sonypi_event sonypi_joggerev[] = {
3418         { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
3419         { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
3420         { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
3421         { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
3422         { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
3423         { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
3424         { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
3425         { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
3426         { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
3427         { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
3428         { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
3429         { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
3430         { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
3431         { 0, 0 }
3432 };
3433 
3434 /* The set of possible capture button events */
3435 static struct sonypi_event sonypi_captureev[] = {
3436         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
3437         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
3438         { 0x40, SONYPI_EVENT_CAPTURE_PRESSED },
3439         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
3440         { 0, 0 }
3441 };
3442 
3443 /* The set of possible fnkeys events */
3444 static struct sonypi_event sonypi_fnkeyev[] = {
3445         { 0x10, SONYPI_EVENT_FNKEY_ESC },
3446         { 0x11, SONYPI_EVENT_FNKEY_F1 },
3447         { 0x12, SONYPI_EVENT_FNKEY_F2 },
3448         { 0x13, SONYPI_EVENT_FNKEY_F3 },
3449         { 0x14, SONYPI_EVENT_FNKEY_F4 },
3450         { 0x15, SONYPI_EVENT_FNKEY_F5 },
3451         { 0x16, SONYPI_EVENT_FNKEY_F6 },
3452         { 0x17, SONYPI_EVENT_FNKEY_F7 },
3453         { 0x18, SONYPI_EVENT_FNKEY_F8 },
3454         { 0x19, SONYPI_EVENT_FNKEY_F9 },
3455         { 0x1a, SONYPI_EVENT_FNKEY_F10 },
3456         { 0x1b, SONYPI_EVENT_FNKEY_F11 },
3457         { 0x1c, SONYPI_EVENT_FNKEY_F12 },
3458         { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
3459         { 0x21, SONYPI_EVENT_FNKEY_1 },
3460         { 0x22, SONYPI_EVENT_FNKEY_2 },
3461         { 0x31, SONYPI_EVENT_FNKEY_D },
3462         { 0x32, SONYPI_EVENT_FNKEY_E },
3463         { 0x33, SONYPI_EVENT_FNKEY_F },
3464         { 0x34, SONYPI_EVENT_FNKEY_S },
3465         { 0x35, SONYPI_EVENT_FNKEY_B },
3466         { 0x36, SONYPI_EVENT_FNKEY_ONLY },
3467         { 0, 0 }
3468 };
3469 
3470 /* The set of possible program key events */
3471 static struct sonypi_event sonypi_pkeyev[] = {
3472         { 0x01, SONYPI_EVENT_PKEY_P1 },
3473         { 0x02, SONYPI_EVENT_PKEY_P2 },
3474         { 0x04, SONYPI_EVENT_PKEY_P3 },
3475         { 0x20, SONYPI_EVENT_PKEY_P1 },
3476         { 0, 0 }
3477 };
3478 
3479 /* The set of possible bluetooth events */
3480 static struct sonypi_event sonypi_blueev[] = {
3481         { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
3482         { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
3483         { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
3484         { 0, 0 }
3485 };
3486 
3487 /* The set of possible wireless events */
3488 static struct sonypi_event sonypi_wlessev[] = {
3489         { 0x59, SONYPI_EVENT_IGNORE },
3490         { 0x5a, SONYPI_EVENT_IGNORE },
3491         { 0, 0 }
3492 };
3493 
3494 /* The set of possible back button events */
3495 static struct sonypi_event sonypi_backev[] = {
3496         { 0x20, SONYPI_EVENT_BACK_PRESSED },
3497         { 0, 0 }
3498 };
3499 
3500 /* The set of possible help button events */
3501 static struct sonypi_event sonypi_helpev[] = {
3502         { 0x3b, SONYPI_EVENT_HELP_PRESSED },
3503         { 0, 0 }
3504 };
3505 
3506 
3507 /* The set of possible lid events */
3508 static struct sonypi_event sonypi_lidev[] = {
3509         { 0x51, SONYPI_EVENT_LID_CLOSED },
3510         { 0x50, SONYPI_EVENT_LID_OPENED },
3511         { 0, 0 }
3512 };
3513 
3514 /* The set of possible zoom events */
3515 static struct sonypi_event sonypi_zoomev[] = {
3516         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
3517         { 0x10, SONYPI_EVENT_ZOOM_IN_PRESSED },
3518         { 0x20, SONYPI_EVENT_ZOOM_OUT_PRESSED },
3519         { 0x04, SONYPI_EVENT_ZOOM_PRESSED },
3520         { 0, 0 }
3521 };
3522 
3523 /* The set of possible thumbphrase events */
3524 static struct sonypi_event sonypi_thumbphraseev[] = {
3525         { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
3526         { 0, 0 }
3527 };
3528 
3529 /* The set of possible motioneye camera events */
3530 static struct sonypi_event sonypi_meyeev[] = {
3531         { 0x00, SONYPI_EVENT_MEYE_FACE },
3532         { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
3533         { 0, 0 }
3534 };
3535 
3536 /* The set of possible memorystick events */
3537 static struct sonypi_event sonypi_memorystickev[] = {
3538         { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
3539         { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
3540         { 0, 0 }
3541 };
3542 
3543 /* The set of possible battery events */
3544 static struct sonypi_event sonypi_batteryev[] = {
3545         { 0x20, SONYPI_EVENT_BATTERY_INSERT },
3546         { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
3547         { 0, 0 }
3548 };
3549 
3550 /* The set of possible volume events */
3551 static struct sonypi_event sonypi_volumeev[] = {
3552         { 0x01, SONYPI_EVENT_VOLUME_INC_PRESSED },
3553         { 0x02, SONYPI_EVENT_VOLUME_DEC_PRESSED },
3554         { 0, 0 }
3555 };
3556 
3557 /* The set of possible brightness events */
3558 static struct sonypi_event sonypi_brightnessev[] = {
3559         { 0x80, SONYPI_EVENT_BRIGHTNESS_PRESSED },
3560         { 0, 0 }
3561 };
3562 
3563 static struct sonypi_eventtypes type1_events[] = {
3564         { 0, 0xffffffff, sonypi_releaseev },
3565         { 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
3566         { 0x30, SONYPI_LID_MASK, sonypi_lidev },
3567         { 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
3568         { 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
3569         { 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3570         { 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3571         { 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
3572         { 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3573         { 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
3574         { 0 },
3575 };
3576 static struct sonypi_eventtypes type2_events[] = {
3577         { 0, 0xffffffff, sonypi_releaseev },
3578         { 0x38, SONYPI_LID_MASK, sonypi_lidev },
3579         { 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
3580         { 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
3581         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3582         { 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3583         { 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
3584         { 0x11, SONYPI_BACK_MASK, sonypi_backev },
3585         { 0x21, SONYPI_HELP_MASK, sonypi_helpev },
3586         { 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
3587         { 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
3588         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3589         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3590         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3591         { 0 },
3592 };
3593 static struct sonypi_eventtypes type3_events[] = {
3594         { 0, 0xffffffff, sonypi_releaseev },
3595         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3596         { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
3597         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3598         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3599         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3600         { 0x05, SONYPI_PKEY_MASK, sonypi_pkeyev },
3601         { 0x05, SONYPI_ZOOM_MASK, sonypi_zoomev },
3602         { 0x05, SONYPI_CAPTURE_MASK, sonypi_captureev },
3603         { 0x05, SONYPI_PKEY_MASK, sonypi_volumeev },
3604         { 0x05, SONYPI_PKEY_MASK, sonypi_brightnessev },
3605         { 0 },
3606 };
3607 
3608 /* low level spic calls */
3609 #define ITERATIONS_LONG         10000
3610 #define ITERATIONS_SHORT        10
3611 #define wait_on_command(command, iterations) {                          \
3612         unsigned int n = iterations;                                    \
3613         while (--n && (command))                                        \
3614                 udelay(1);                                              \
3615         if (!n)                                                         \
3616                 dprintk("command failed at %s : %s (line %d)\n",        \
3617                                 __FILE__, __func__, __LINE__);  \
3618 }
3619 
3620 static u8 sony_pic_call1(u8 dev)
3621 {
3622         u8 v1, v2;
3623 
3624         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3625                         ITERATIONS_LONG);
3626         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3627         v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
3628         v2 = inb_p(spic_dev.cur_ioport->io1.minimum);
3629         dprintk("sony_pic_call1(0x%.2x): 0x%.4x\n", dev, (v2 << 8) | v1);
3630         return v2;
3631 }
3632 
3633 static u8 sony_pic_call2(u8 dev, u8 fn)
3634 {
3635         u8 v1;
3636 
3637         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3638                         ITERATIONS_LONG);
3639         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3640         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3641                         ITERATIONS_LONG);
3642         outb(fn, spic_dev.cur_ioport->io1.minimum);
3643         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3644         dprintk("sony_pic_call2(0x%.2x - 0x%.2x): 0x%.4x\n", dev, fn, v1);
3645         return v1;
3646 }
3647 
3648 static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
3649 {
3650         u8 v1;
3651 
3652         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3653         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3654         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3655         outb(fn, spic_dev.cur_ioport->io1.minimum);
3656         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3657         outb(v, spic_dev.cur_ioport->io1.minimum);
3658         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3659         dprintk("sony_pic_call3(0x%.2x - 0x%.2x - 0x%.2x): 0x%.4x\n",
3660                         dev, fn, v, v1);
3661         return v1;
3662 }
3663 
3664 /*
3665  * minidrivers for SPIC models
3666  */
3667 static int type3_handle_irq(const u8 data_mask, const u8 ev)
3668 {
3669         /*
3670          * 0x31 could mean we have to take some extra action and wait for
3671          * the next irq for some Type3 models, it will generate a new
3672          * irq and we can read new data from the device:
3673          *  - 0x5c and 0x5f requires 0xA0
3674          *  - 0x61 requires 0xB3
3675          */
3676         if (data_mask == 0x31) {
3677                 if (ev == 0x5c || ev == 0x5f)
3678                         sony_pic_call1(0xA0);
3679                 else if (ev == 0x61)
3680                         sony_pic_call1(0xB3);
3681                 return 0;
3682         }
3683         return 1;
3684 }
3685 
3686 static void sony_pic_detect_device_type(struct sony_pic_dev *dev)
3687 {
3688         struct pci_dev *pcidev;
3689 
3690         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3691                         PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
3692         if (pcidev) {
3693                 dev->model = SONYPI_DEVICE_TYPE1;
3694                 dev->evport_offset = SONYPI_TYPE1_OFFSET;
3695                 dev->event_types = type1_events;
3696                 goto out;
3697         }
3698 
3699         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3700                         PCI_DEVICE_ID_INTEL_ICH6_1, NULL);
3701         if (pcidev) {
3702                 dev->model = SONYPI_DEVICE_TYPE2;
3703                 dev->evport_offset = SONYPI_TYPE2_OFFSET;
3704                 dev->event_types = type2_events;
3705                 goto out;
3706         }
3707 
3708         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3709                         PCI_DEVICE_ID_INTEL_ICH7_1, NULL);
3710         if (pcidev) {
3711                 dev->model = SONYPI_DEVICE_TYPE3;
3712                 dev->handle_irq = type3_handle_irq;
3713                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3714                 dev->event_types = type3_events;
3715                 goto out;
3716         }
3717 
3718         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3719                         PCI_DEVICE_ID_INTEL_ICH8_4, NULL);
3720         if (pcidev) {
3721                 dev->model = SONYPI_DEVICE_TYPE3;
3722                 dev->handle_irq = type3_handle_irq;
3723                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3724                 dev->event_types = type3_events;
3725                 goto out;
3726         }
3727 
3728         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3729                         PCI_DEVICE_ID_INTEL_ICH9_1, NULL);
3730         if (pcidev) {
3731                 dev->model = SONYPI_DEVICE_TYPE3;
3732                 dev->handle_irq = type3_handle_irq;
3733                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3734                 dev->event_types = type3_events;
3735                 goto out;
3736         }
3737 
3738         /* default */
3739         dev->model = SONYPI_DEVICE_TYPE2;
3740         dev->evport_offset = SONYPI_TYPE2_OFFSET;
3741         dev->event_types = type2_events;
3742 
3743 out:
3744         pci_dev_put(pcidev);
3745 
3746         pr_info("detected Type%d model\n",
3747                 dev->model == SONYPI_DEVICE_TYPE1 ? 1 :
3748                 dev->model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
3749 }
3750 
3751 /* camera tests and poweron/poweroff */
3752 #define SONYPI_CAMERA_PICTURE           5
3753 #define SONYPI_CAMERA_CONTROL           0x10
3754 
3755 #define SONYPI_CAMERA_BRIGHTNESS                0
3756 #define SONYPI_CAMERA_CONTRAST                  1
3757 #define SONYPI_CAMERA_HUE                       2
3758 #define SONYPI_CAMERA_COLOR                     3
3759 #define SONYPI_CAMERA_SHARPNESS                 4
3760 
3761 #define SONYPI_CAMERA_EXPOSURE_MASK             0xC
3762 #define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
3763 #define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
3764 #define SONYPI_CAMERA_MUTE_MASK                 0x40
3765 
3766 /* the rest don't need a loop until not 0xff */
3767 #define SONYPI_CAMERA_AGC                       6
3768 #define SONYPI_CAMERA_AGC_MASK                  0x30
3769 #define SONYPI_CAMERA_SHUTTER_MASK              0x7
3770 
3771 #define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
3772 #define SONYPI_CAMERA_CONTROL                   0x10
3773 
3774 #define SONYPI_CAMERA_STATUS                    7
3775 #define SONYPI_CAMERA_STATUS_READY              0x2
3776 #define SONYPI_CAMERA_STATUS_POSITION           0x4
3777 
3778 #define SONYPI_DIRECTION_BACKWARDS              0x4
3779 
3780 #define SONYPI_CAMERA_REVISION                  8
3781 #define SONYPI_CAMERA_ROMVERSION                9
3782 
3783 static int __sony_pic_camera_ready(void)
3784 {
3785         u8 v;
3786 
3787         v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
3788         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
3789 }
3790 
3791 static int __sony_pic_camera_off(void)
3792 {
3793         if (!camera) {
3794                 pr_warn("camera control not enabled\n");
3795                 return -ENODEV;
3796         }
3797 
3798         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
3799                                 SONYPI_CAMERA_MUTE_MASK),
3800                         ITERATIONS_SHORT);
3801 
3802         if (spic_dev.camera_power) {
3803                 sony_pic_call2(0x91, 0);
3804                 spic_dev.camera_power = 0;
3805         }
3806         return 0;
3807 }
3808 
3809 static int __sony_pic_camera_on(void)
3810 {
3811         int i, j, x;
3812 
3813         if (!camera) {
3814                 pr_warn("camera control not enabled\n");
3815                 return -ENODEV;
3816         }
3817 
3818         if (spic_dev.camera_power)
3819                 return 0;
3820 
3821         for (j = 5; j > 0; j--) {
3822 
3823                 for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
3824                         msleep(10);
3825                 sony_pic_call1(0x93);
3826 
3827                 for (i = 400; i > 0; i--) {
3828                         if (__sony_pic_camera_ready())
3829                                 break;
3830                         msleep(10);
3831                 }
3832                 if (i)
3833                         break;
3834         }
3835 
3836         if (j == 0) {
3837                 pr_warn("failed to power on camera\n");
3838                 return -ENODEV;
3839         }
3840 
3841         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
3842                                 0x5a),
3843                         ITERATIONS_SHORT);
3844 
3845         spic_dev.camera_power = 1;
3846         return 0;
3847 }
3848 
3849 /* External camera command (exported to the motion eye v4l driver) */
3850 int sony_pic_camera_command(int command, u8 value)
3851 {
3852         if (!camera)
3853                 return -EIO;
3854 
3855         mutex_lock(&spic_dev.lock);
3856 
3857         switch (command) {
3858         case SONY_PIC_COMMAND_SETCAMERA:
3859                 if (value)
3860                         __sony_pic_camera_on();
3861                 else
3862                         __sony_pic_camera_off();
3863                 break;
3864         case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
3865                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
3866                                 ITERATIONS_SHORT);
3867                 break;
3868         case SONY_PIC_COMMAND_SETCAMERACONTRAST:
3869                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
3870                                 ITERATIONS_SHORT);
3871                 break;
3872         case SONY_PIC_COMMAND_SETCAMERAHUE:
3873                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
3874                                 ITERATIONS_SHORT);
3875                 break;
3876         case SONY_PIC_COMMAND_SETCAMERACOLOR:
3877                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
3878                                 ITERATIONS_SHORT);
3879                 break;
3880         case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
3881                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
3882                                 ITERATIONS_SHORT);
3883                 break;
3884         case SONY_PIC_COMMAND_SETCAMERAPICTURE:
3885                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
3886                                 ITERATIONS_SHORT);
3887                 break;
3888         case SONY_PIC_COMMAND_SETCAMERAAGC:
3889                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
3890                                 ITERATIONS_SHORT);
3891                 break;
3892         default:
3893                 pr_err("sony_pic_camera_command invalid: %d\n", command);
3894                 break;
3895         }
3896         mutex_unlock(&spic_dev.lock);
3897         return 0;
3898 }
3899 EXPORT_SYMBOL(sony_pic_camera_command);
3900 
3901 /* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
3902 static void __sony_pic_set_wwanpower(u8 state)
3903 {
3904         state = !!state;
3905         if (spic_dev.wwan_power == state)
3906                 return;
3907         sony_pic_call2(0xB0, state);
3908         sony_pic_call1(0x82);
3909         spic_dev.wwan_power = state;
3910 }
3911 
3912 static ssize_t sony_pic_wwanpower_store(struct device *dev,
3913                 struct device_attribute *attr,
3914                 const char *buffer, size_t count)
3915 {
3916         unsigned long value;
3917         if (count > 31)
3918                 return -EINVAL;
3919 
3920         if (kstrtoul(buffer, 10, &value))
3921                 return -EINVAL;
3922 
3923         mutex_lock(&spic_dev.lock);
3924         __sony_pic_set_wwanpower(value);
3925         mutex_unlock(&spic_dev.lock);
3926 
3927         return count;
3928 }
3929 
3930 static ssize_t sony_pic_wwanpower_show(struct device *dev,
3931                 struct device_attribute *attr, char *buffer)
3932 {
3933         ssize_t count;
3934         mutex_lock(&spic_dev.lock);
3935         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
3936         mutex_unlock(&spic_dev.lock);
3937         return count;
3938 }
3939 
3940 /* bluetooth subsystem power state */
3941 static void __sony_pic_set_bluetoothpower(u8 state)
3942 {
3943         state = !!state;
3944         if (spic_dev.bluetooth_power == state)
3945                 return;
3946         sony_pic_call2(0x96, state);
3947         sony_pic_call1(0x82);
3948         spic_dev.bluetooth_power = state;
3949 }
3950 
3951 static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
3952                 struct device_attribute *attr,
3953                 const char *buffer, size_t count)
3954 {
3955         unsigned long value;
3956         if (count > 31)
3957                 return -EINVAL;
3958 
3959         if (kstrtoul(buffer, 10, &value))
3960                 return -EINVAL;
3961 
3962         mutex_lock(&spic_dev.lock);
3963         __sony_pic_set_bluetoothpower(value);
3964         mutex_unlock(&spic_dev.lock);
3965 
3966         return count;
3967 }
3968 
3969 static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
3970                 struct device_attribute *attr, char *buffer)
3971 {
3972         ssize_t count = 0;
3973         mutex_lock(&spic_dev.lock);
3974         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
3975         mutex_unlock(&spic_dev.lock);
3976         return count;
3977 }
3978 
3979 /* fan speed */
3980 /* FAN0 information (reverse engineered from ACPI tables) */
3981 #define SONY_PIC_FAN0_STATUS    0x93
3982 static int sony_pic_set_fanspeed(unsigned long value)
3983 {
3984         return ec_write(SONY_PIC_FAN0_STATUS, value);
3985 }
3986 
3987 static int sony_pic_get_fanspeed(u8 *value)
3988 {
3989         return ec_read(SONY_PIC_FAN0_STATUS, value);
3990 }
3991 
3992 static ssize_t sony_pic_fanspeed_store(struct device *dev,
3993                 struct device_attribute *attr,
3994                 const char *buffer, size_t count)
3995 {
3996         unsigned long value;
3997         if (count > 31)
3998                 return -EINVAL;
3999 
4000         if (kstrtoul(buffer, 10, &value))
4001                 return -EINVAL;
4002 
4003         if (sony_pic_set_fanspeed(value))
4004                 return -EIO;
4005 
4006         return count;
4007 }
4008 
4009 static ssize_t sony_pic_fanspeed_show(struct device *dev,
4010                 struct device_attribute *attr, char *buffer)
4011 {
4012         u8 value = 0;
4013         if (sony_pic_get_fanspeed(&value))
4014                 return -EIO;
4015 
4016         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
4017 }
4018 
4019 #define SPIC_ATTR(_name, _mode)                                 \
4020 struct device_attribute spic_attr_##_name = __ATTR(_name,       \
4021                 _mode, sony_pic_## _name ##_show,               \
4022                 sony_pic_## _name ##_store)
4023 
4024 static SPIC_ATTR(bluetoothpower, 0644);
4025 static SPIC_ATTR(wwanpower, 0644);
4026 static SPIC_ATTR(fanspeed, 0644);
4027 
4028 static struct attribute *spic_attributes[] = {
4029         &spic_attr_bluetoothpower.attr,
4030         &spic_attr_wwanpower.attr,
4031         &spic_attr_fanspeed.attr,
4032         NULL
4033 };
4034 
4035 static struct attribute_group spic_attribute_group = {
4036         .attrs = spic_attributes
4037 };
4038 
4039 /******** SONYPI compatibility **********/
4040 #ifdef CONFIG_SONYPI_COMPAT
4041 
4042 /* battery / brightness / temperature  addresses */
4043 #define SONYPI_BAT_FLAGS        0x81
4044 #define SONYPI_LCD_LIGHT        0x96
4045 #define SONYPI_BAT1_PCTRM       0xa0
4046 #define SONYPI_BAT1_LEFT        0xa2
4047 #define SONYPI_BAT1_MAXRT       0xa4
4048 #define SONYPI_BAT2_PCTRM       0xa8
4049 #define SONYPI_BAT2_LEFT        0xaa
4050 #define SONYPI_BAT2_MAXRT       0xac
4051 #define SONYPI_BAT1_MAXTK       0xb0
4052 #define SONYPI_BAT1_FULL        0xb2
4053 #define SONYPI_BAT2_MAXTK       0xb8
4054 #define SONYPI_BAT2_FULL        0xba
4055 #define SONYPI_TEMP_STATUS      0xC1
4056 
4057 struct sonypi_compat_s {
4058         struct fasync_struct    *fifo_async;
4059         struct kfifo            fifo;
4060         spinlock_t              fifo_lock;
4061         wait_queue_head_t       fifo_proc_list;
4062         atomic_t                open_count;
4063 };
4064 static struct sonypi_compat_s sonypi_compat = {
4065         .open_count = ATOMIC_INIT(0),
4066 };
4067 
4068 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
4069 {
4070         return fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
4071 }
4072 
4073 static int sonypi_misc_release(struct inode *inode, struct file *file)
4074 {
4075         atomic_dec(&sonypi_compat.open_count);
4076         return 0;
4077 }
4078 
4079 static int sonypi_misc_open(struct inode *inode, struct file *file)
4080 {
4081         /* Flush input queue on first open */
4082         unsigned long flags;
4083 
4084         spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
4085 
4086         if (atomic_inc_return(&sonypi_compat.open_count) == 1)
4087                 kfifo_reset(&sonypi_compat.fifo);
4088 
4089         spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
4090 
4091         return 0;
4092 }
4093 
4094 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
4095                                 size_t count, loff_t *pos)
4096 {
4097         ssize_t ret;
4098         unsigned char c;
4099 
4100         if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
4101             (file->f_flags & O_NONBLOCK))
4102                 return -EAGAIN;
4103 
4104         ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
4105                                        kfifo_len(&sonypi_compat.fifo) != 0);
4106         if (ret)
4107                 return ret;
4108 
4109         while (ret < count &&
4110                (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
4111                           &sonypi_compat.fifo_lock) == sizeof(c))) {
4112                 if (put_user(c, buf++))
4113                         return -EFAULT;
4114                 ret++;
4115         }
4116 
4117         if (ret > 0) {
4118                 struct inode *inode = file_inode(file);
4119                 inode->i_atime = current_fs_time(inode->i_sb);
4120         }
4121 
4122         return ret;
4123 }
4124 
4125 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
4126 {
4127         poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
4128         if (kfifo_len(&sonypi_compat.fifo))
4129                 return POLLIN | POLLRDNORM;
4130         return 0;
4131 }
4132 
4133 static int ec_read16(u8 addr, u16 *value)
4134 {
4135         u8 val_lb, val_hb;
4136         if (ec_read(addr, &val_lb))
4137                 return -1;
4138         if (ec_read(addr + 1, &val_hb))
4139                 return -1;
4140         *value = val_lb | (val_hb << 8);
4141         return 0;
4142 }
4143 
4144 static long sonypi_misc_ioctl(struct file *fp, unsigned int cmd,
4145                                                         unsigned long arg)
4146 {
4147         int ret = 0;
4148         void __user *argp = (void __user *)arg;
4149         u8 val8;
4150         u16 val16;
4151         int value;
4152 
4153         mutex_lock(&spic_dev.lock);
4154         switch (cmd) {
4155         case SONYPI_IOCGBRT:
4156                 if (sony_bl_props.dev == NULL) {
4157                         ret = -EIO;
4158                         break;
4159                 }
4160                 if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL,
4161                                         &value)) {
4162                         ret = -EIO;
4163                         break;
4164                 }
4165                 val8 = ((value & 0xff) - 1) << 5;
4166                 if (copy_to_user(argp, &val8, sizeof(val8)))
4167                                 ret = -EFAULT;
4168                 break;
4169         case SONYPI_IOCSBRT:
4170                 if (sony_bl_props.dev == NULL) {
4171                         ret = -EIO;
4172                         break;
4173                 }
4174                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4175                         ret = -EFAULT;
4176                         break;
4177                 }
4178                 value = (val8 >> 5) + 1;
4179                 if (sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &value,
4180                                         NULL)) {
4181                         ret = -EIO;
4182                         break;
4183                 }
4184                 /* sync the backlight device status */
4185                 sony_bl_props.dev->props.brightness =
4186                     sony_backlight_get_brightness(sony_bl_props.dev);
4187                 break;
4188         case SONYPI_IOCGBAT1CAP:
4189                 if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
4190                         ret = -EIO;
4191                         break;
4192                 }
4193                 if (copy_to_user(argp, &val16, sizeof(val16)))
4194                         ret = -EFAULT;
4195                 break;
4196         case SONYPI_IOCGBAT1REM:
4197                 if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
4198                         ret = -EIO;
4199                         break;
4200                 }
4201                 if (copy_to_user(argp, &val16, sizeof(val16)))
4202                         ret = -EFAULT;
4203                 break;
4204         case SONYPI_IOCGBAT2CAP:
4205                 if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
4206                         ret = -EIO;
4207                         break;
4208                 }
4209                 if (copy_to_user(argp, &val16, sizeof(val16)))
4210                         ret = -EFAULT;
4211                 break;
4212         case SONYPI_IOCGBAT2REM:
4213                 if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
4214                         ret = -EIO;
4215                         break;
4216                 }
4217                 if (copy_to_user(argp, &val16, sizeof(val16)))
4218                         ret = -EFAULT;
4219                 break;
4220         case SONYPI_IOCGBATFLAGS:
4221                 if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
4222                         ret = -EIO;
4223                         break;
4224                 }
4225                 val8 &= 0x07;
4226                 if (copy_to_user(argp, &val8, sizeof(val8)))
4227                         ret = -EFAULT;
4228                 break;
4229         case SONYPI_IOCGBLUE:
4230                 val8 = spic_dev.bluetooth_power;
4231                 if (copy_to_user(argp, &val8, sizeof(val8)))
4232                         ret = -EFAULT;
4233                 break;
4234         case SONYPI_IOCSBLUE:
4235                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4236                         ret = -EFAULT;
4237                         break;
4238                 }
4239                 __sony_pic_set_bluetoothpower(val8);
4240                 break;
4241         /* FAN Controls */
4242         case SONYPI_IOCGFAN:
4243                 if (sony_pic_get_fanspeed(&val8)) {
4244                         ret = -EIO;
4245                         break;
4246                 }
4247                 if (copy_to_user(argp, &val8, sizeof(val8)))
4248                         ret = -EFAULT;
4249                 break;
4250         case SONYPI_IOCSFAN:
4251                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4252                         ret = -EFAULT;
4253                         break;
4254                 }
4255                 if (sony_pic_set_fanspeed(val8))
4256                         ret = -EIO;
4257                 break;
4258         /* GET Temperature (useful under APM) */
4259         case SONYPI_IOCGTEMP:
4260                 if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
4261                         ret = -EIO;
4262                         break;
4263                 }
4264                 if (copy_to_user(argp, &val8, sizeof(val8)))
4265                         ret = -EFAULT;
4266                 break;
4267         default:
4268                 ret = -EINVAL;
4269         }
4270         mutex_unlock(&spic_dev.lock);
4271         return ret;
4272 }
4273 
4274 static const struct file_operations sonypi_misc_fops = {
4275         .owner          = THIS_MODULE,
4276         .read           = sonypi_misc_read,
4277         .poll           = sonypi_misc_poll,
4278         .open           = sonypi_misc_open,
4279         .release        = sonypi_misc_release,
4280         .fasync         = sonypi_misc_fasync,
4281         .unlocked_ioctl = sonypi_misc_ioctl,
4282         .llseek         = noop_llseek,
4283 };
4284 
4285 static struct miscdevice sonypi_misc_device = {
4286         .minor          = MISC_DYNAMIC_MINOR,
4287         .name           = "sonypi",
4288         .fops           = &sonypi_misc_fops,
4289 };
4290 
4291 static void sonypi_compat_report_event(u8 event)
4292 {
4293         kfifo_in_locked(&sonypi_compat.fifo, (unsigned char *)&event,
4294                         sizeof(event), &sonypi_compat.fifo_lock);
4295         kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
4296         wake_up_interruptible(&sonypi_compat.fifo_proc_list);
4297 }
4298 
4299 static int sonypi_compat_init(void)
4300 {
4301         int error;
4302 
4303         spin_lock_init(&sonypi_compat.fifo_lock);
4304         error =
4305          kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
4306         if (error) {
4307                 pr_err("kfifo_alloc failed\n");
4308                 return error;
4309         }
4310 
4311         init_waitqueue_head(&sonypi_compat.fifo_proc_list);
4312 
4313         if (minor != -1)
4314                 sonypi_misc_device.minor = minor;
4315         error = misc_register(&sonypi_misc_device);
4316         if (error) {
4317                 pr_err("misc_register failed\n");
4318                 goto err_free_kfifo;
4319         }
4320         if (minor == -1)
4321                 pr_info("device allocated minor is %d\n",
4322                         sonypi_misc_device.minor);
4323 
4324         return 0;
4325 
4326 err_free_kfifo:
4327         kfifo_free(&sonypi_compat.fifo);
4328         return error;
4329 }
4330 
4331 static void sonypi_compat_exit(void)
4332 {
4333         misc_deregister(&sonypi_misc_device);
4334         kfifo_free(&sonypi_compat.fifo);
4335 }
4336 #else
4337 static int sonypi_compat_init(void) { return 0; }
4338 static void sonypi_compat_exit(void) { }
4339 static void sonypi_compat_report_event(u8 event) { }
4340 #endif /* CONFIG_SONYPI_COMPAT */
4341 
4342 /*
4343  * ACPI callbacks
4344  */
4345 static acpi_status
4346 sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
4347 {
4348         u32 i;
4349         struct sony_pic_dev *dev = (struct sony_pic_dev *)context;
4350 
4351         switch (resource->type) {
4352         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
4353                 {
4354                         /* start IO enumeration */
4355                         struct sony_pic_ioport *ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
4356                         if (!ioport)
4357                                 return AE_ERROR;
4358 
4359                         list_add(&ioport->list, &dev->ioports);
4360                         return AE_OK;
4361                 }
4362 
4363         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
4364                 /* end IO enumeration */
4365                 return AE_OK;
4366 
4367         case ACPI_RESOURCE_TYPE_IRQ:
4368                 {
4369                         struct acpi_resource_irq *p = &resource->data.irq;
4370                         struct sony_pic_irq *interrupt = NULL;
4371                         if (!p || !p->interrupt_count) {
4372                                 /*
4373                                  * IRQ descriptors may have no IRQ# bits set,
4374                                  * particularly those those w/ _STA disabled
4375                                  */
4376                                 dprintk("Blank IRQ resource\n");
4377                                 return AE_OK;
4378                         }
4379                         for (i = 0; i < p->interrupt_count; i++) {
4380                                 if (!p->interrupts[i]) {
4381                                         pr_warn("Invalid IRQ %d\n",
4382                                                 p->interrupts[i]);
4383                                         continue;
4384                                 }
4385                                 interrupt = kzalloc(sizeof(*interrupt),
4386                                                 GFP_KERNEL);
4387                                 if (!interrupt)
4388                                         return AE_ERROR;
4389 
4390                                 list_add(&interrupt->list, &dev->interrupts);
4391                                 interrupt->irq.triggering = p->triggering;
4392                                 interrupt->irq.polarity = p->polarity;
4393                                 interrupt->irq.sharable = p->sharable;
4394                                 interrupt->irq.interrupt_count = 1;
4395                                 interrupt->irq.interrupts[0] = p->interrupts[i];
4396                         }
4397                         return AE_OK;
4398                 }
4399         case ACPI_RESOURCE_TYPE_IO:
4400                 {
4401                         struct acpi_resource_io *io = &resource->data.io;
4402                         struct sony_pic_ioport *ioport =
4403                                 list_first_entry(&dev->ioports, struct sony_pic_ioport, list);
4404                         if (!io) {
4405                                 dprintk("Blank IO resource\n");
4406                                 return AE_OK;
4407                         }
4408 
4409                         if (!ioport->io1.minimum) {
4410                                 memcpy(&ioport->io1, io, sizeof(*io));
4411                                 dprintk("IO1 at 0x%.4x (0x%.2x)\n", ioport->io1.minimum,
4412                                                 ioport->io1.address_length);
4413                         }
4414                         else if (!ioport->io2.minimum) {
4415                                 memcpy(&ioport->io2, io, sizeof(*io));
4416                                 dprintk("IO2 at 0x%.4x (0x%.2x)\n", ioport->io2.minimum,
4417                                                 ioport->io2.address_length);
4418                         }
4419                         else {
4420                                 pr_err("Unknown SPIC Type, more than 2 IO Ports\n");
4421                                 return AE_ERROR;
4422                         }
4423                         return AE_OK;
4424                 }
4425         default:
4426                 dprintk("Resource %d isn't an IRQ nor an IO port\n",
4427                         resource->type);
4428 
4429         case ACPI_RESOURCE_TYPE_END_TAG:
4430                 return AE_OK;
4431         }
4432         return AE_CTRL_TERMINATE;
4433 }
4434 
4435 static int sony_pic_possible_resources(struct acpi_device *device)
4436 {
4437         int result = 0;
4438         acpi_status status = AE_OK;
4439 
4440         if (!device)
4441                 return -EINVAL;
4442 
4443         /* get device status */
4444         /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
4445         dprintk("Evaluating _STA\n");
4446         result = acpi_bus_get_status(device);
4447         if (result) {
4448                 pr_warn("Unable to read status\n");
4449                 goto end;
4450         }
4451 
4452         if (!device->status.enabled)
4453                 dprintk("Device disabled\n");
4454         else
4455                 dprintk("Device enabled\n");
4456 
4457         /*
4458          * Query and parse 'method'
4459          */
4460         dprintk("Evaluating %s\n", METHOD_NAME__PRS);
4461         status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
4462                         sony_pic_read_possible_resource, &spic_dev);
4463         if (ACPI_FAILURE(status)) {
4464                 pr_warn("Failure evaluating %s\n", METHOD_NAME__PRS);
4465                 result = -ENODEV;
4466         }
4467 end:
4468         return result;
4469 }
4470 
4471 /*
4472  *  Disable the spic device by calling its _DIS method
4473  */
4474 static int sony_pic_disable(struct acpi_device *device)
4475 {
4476         acpi_status ret = acpi_evaluate_object(device->handle, "_DIS", NULL,
4477                                                NULL);
4478 
4479         if (ACPI_FAILURE(ret) && ret != AE_NOT_FOUND)
4480                 return -ENXIO;
4481 
4482         dprintk("Device disabled\n");
4483         return 0;
4484 }
4485 
4486 
4487 /*
4488  *  Based on drivers/acpi/pci_link.c:acpi_pci_link_set
4489  *
4490  *  Call _SRS to set current resources
4491  */
4492 static int sony_pic_enable(struct acpi_device *device,
4493                 struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
4494 {
4495         acpi_status status;
4496         int result = 0;
4497         /* Type 1 resource layout is:
4498          *    IO
4499          *    IO
4500          *    IRQNoFlags
4501          *    End
4502          *
4503          * Type 2 and 3 resource layout is:
4504          *    IO
4505          *    IRQNoFlags
4506          *    End
4507          */
4508         struct {
4509                 struct acpi_resource res1;
4510                 struct acpi_resource res2;
4511                 struct acpi_resource res3;
4512                 struct acpi_resource res4;
4513         } *resource;
4514         struct acpi_buffer buffer = { 0, NULL };
4515 
4516         if (!ioport || !irq)
4517                 return -EINVAL;
4518 
4519         /* init acpi_buffer */
4520         resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
4521         if (!resource)
4522                 return -ENOMEM;
4523 
4524         buffer.length = sizeof(*resource) + 1;
4525         buffer.pointer = resource;
4526 
4527         /* setup Type 1 resources */
4528         if (spic_dev.model == SONYPI_DEVICE_TYPE1) {
4529 
4530                 /* setup io resources */
4531                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
4532                 resource->res1.length = sizeof(struct acpi_resource);
4533                 memcpy(&resource->res1.data.io, &ioport->io1,
4534                                 sizeof(struct acpi_resource_io));
4535 
4536                 resource->res2.type = ACPI_RESOURCE_TYPE_IO;
4537                 resource->res2.length = sizeof(struct acpi_resource);
4538                 memcpy(&resource->res2.data.io, &ioport->io2,
4539                                 sizeof(struct acpi_resource_io));
4540 
4541                 /* setup irq resource */
4542                 resource->res3.type = ACPI_RESOURCE_TYPE_IRQ;
4543                 resource->res3.length = sizeof(struct acpi_resource);
4544                 memcpy(&resource->res3.data.irq, &irq->irq,
4545                                 sizeof(struct acpi_resource_irq));
4546                 /* we requested a shared irq */
4547                 resource->res3.data.irq.sharable = ACPI_SHARED;
4548 
4549                 resource->res4.type = ACPI_RESOURCE_TYPE_END_TAG;
4550                 resource->res4.length = sizeof(struct acpi_resource);
4551         }
4552         /* setup Type 2/3 resources */
4553         else {
4554                 /* setup io resource */
4555                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
4556                 resource->res1.length = sizeof(struct acpi_resource);
4557                 memcpy(&resource->res1.data.io, &ioport->io1,
4558                                 sizeof(struct acpi_resource_io));
4559 
4560                 /* setup irq resource */
4561                 resource->res2.type = ACPI_RESOURCE_TYPE_IRQ;
4562                 resource->res2.length = sizeof(struct acpi_resource);
4563                 memcpy(&resource->res2.data.irq, &irq->irq,
4564                                 sizeof(struct acpi_resource_irq));
4565                 /* we requested a shared irq */
4566                 resource->res2.data.irq.sharable = ACPI_SHARED;
4567 
4568                 resource->res3.type = ACPI_RESOURCE_TYPE_END_TAG;
4569                 resource->res3.length = sizeof(struct acpi_resource);
4570         }
4571 
4572         /* Attempt to set the resource */
4573         dprintk("Evaluating _SRS\n");
4574         status = acpi_set_current_resources(device->handle, &buffer);
4575 
4576         /* check for total failure */
4577         if (ACPI_FAILURE(status)) {
4578                 pr_err("Error evaluating _SRS\n");
4579                 result = -ENODEV;
4580                 goto end;
4581         }
4582 
4583         /* Necessary device initializations calls (from sonypi) */
4584         sony_pic_call1(0x82);
4585         sony_pic_call2(0x81, 0xff);
4586         sony_pic_call1(compat ? 0x92 : 0x82);
4587 
4588 end:
4589         kfree(resource);
4590         return result;
4591 }
4592 
4593 /*****************
4594  *
4595  * ISR: some event is available
4596  *
4597  *****************/
4598 static irqreturn_t sony_pic_irq(int irq, void *dev_id)
4599 {
4600         int i, j;
4601         u8 ev = 0;
4602         u8 data_mask = 0;
4603         u8 device_event = 0;
4604 
4605         struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;
4606 
4607         ev = inb_p(dev->cur_ioport->io1.minimum);
4608         if (dev->cur_ioport->io2.minimum)
4609                 data_mask = inb_p(dev->cur_ioport->io2.minimum);
4610         else
4611                 data_mask = inb_p(dev->cur_ioport->io1.minimum +
4612                                 dev->evport_offset);
4613 
4614         dprintk("event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
4615                         ev, data_mask, dev->cur_ioport->io1.minimum,
4616                         dev->evport_offset);
4617 
4618         if (ev == 0x00 || ev == 0xff)
4619                 return IRQ_HANDLED;
4620 
4621         for (i = 0; dev->event_types[i].mask; i++) {
4622 
4623                 if ((data_mask & dev->event_types[i].data) !=
4624                     dev->event_types[i].data)
4625                         continue;
4626 
4627                 if (!(mask & dev->event_types[i].mask))
4628                         continue;
4629 
4630                 for (j = 0; dev->event_types[i].events[j].event; j++) {
4631                         if (ev == dev->event_types[i].events[j].data) {
4632                                 device_event =
4633                                         dev->event_types[i].events[j].event;
4634                                 /* some events may require ignoring */
4635                                 if (!device_event)
4636                                         return IRQ_HANDLED;
4637                                 goto found;
4638                         }
4639                 }
4640         }
4641         /* Still not able to decode the event try to pass
4642          * it over to the minidriver
4643          */
4644         if (dev->handle_irq && dev->handle_irq(data_mask, ev) == 0)
4645                 return IRQ_HANDLED;
4646 
4647         dprintk("unknown event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
4648                         ev, data_mask, dev->cur_ioport->io1.minimum,
4649                         dev->evport_offset);
4650         return IRQ_HANDLED;
4651 
4652 found:
4653         sony_laptop_report_input_event(device_event);
4654         sonypi_compat_report_event(device_event);
4655         return IRQ_HANDLED;
4656 }
4657 
4658 /*****************
4659  *
4660  *  ACPI driver
4661  *
4662  *****************/
4663 static int sony_pic_remove(struct acpi_device *device)
4664 {
4665         struct sony_pic_ioport *io, *tmp_io;
4666         struct sony_pic_irq *irq, *tmp_irq;
4667 
4668         if (sony_pic_disable(device)) {
4669                 pr_err("Couldn't disable device\n");
4670                 return -ENXIO;
4671         }
4672 
4673         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
4674         release_region(spic_dev.cur_ioport->io1.minimum,
4675                         spic_dev.cur_ioport->io1.address_length);
4676         if (spic_dev.cur_ioport->io2.minimum)
4677                 release_region(spic_dev.cur_ioport->io2.minimum,
4678                                 spic_dev.cur_ioport->io2.address_length);
4679 
4680         sonypi_compat_exit();
4681 
4682         sony_laptop_remove_input();
4683 
4684         /* pf attrs */
4685         sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
4686         sony_pf_remove();
4687 
4688         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
4689                 list_del(&io->list);
4690                 kfree(io);
4691         }
4692         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
4693                 list_del(&irq->list);
4694                 kfree(irq);
4695         }
4696         spic_dev.cur_ioport = NULL;
4697         spic_dev.cur_irq = NULL;
4698 
4699         dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
4700         return 0;
4701 }
4702 
4703 static int sony_pic_add(struct acpi_device *device)
4704 {
4705         int result;
4706         struct sony_pic_ioport *io, *tmp_io;
4707         struct sony_pic_irq *irq, *tmp_irq;
4708 
4709         spic_dev.acpi_dev = device;
4710         strcpy(acpi_device_class(device), "sony/hotkey");
4711         sony_pic_detect_device_type(&spic_dev);
4712         mutex_init(&spic_dev.lock);
4713 
4714         /* read _PRS resources */
4715         result = sony_pic_possible_resources(device);
4716         if (result) {
4717                 pr_err("Unable to read possible resources\n");
4718                 goto err_free_resources;
4719         }
4720 
4721         /* setup input devices and helper fifo */
4722         result = sony_laptop_setup_input(device);
4723         if (result) {
4724                 pr_err("Unable to create input devices\n");
4725                 goto err_free_resources;
4726         }
4727 
4728         result = sonypi_compat_init();
4729         if (result)
4730                 goto err_remove_input;
4731 
4732         /* request io port */
4733         list_for_each_entry_reverse(io, &spic_dev.ioports, list) {
4734                 if (request_region(io->io1.minimum, io->io1.address_length,
4735                                         "Sony Programmable I/O Device")) {
4736                         dprintk("I/O port1: 0x%.4x (0x%.4x) + 0x%.2x\n",
4737                                         io->io1.minimum, io->io1.maximum,
4738                                         io->io1.address_length);
4739                         /* Type 1 have 2 ioports */
4740                         if (io->io2.minimum) {
4741                                 if (request_region(io->io2.minimum,
4742                                                 io->io2.address_length,
4743                                                 "Sony Programmable I/O Device")) {
4744                                         dprintk("I/O port2: 0x%.4x (0x%.4x) + 0x%.2x\n",
4745                                                         io->io2.minimum, io->io2.maximum,
4746                                                         io->io2.address_length);
4747                                         spic_dev.cur_ioport = io;
4748                                         break;
4749                                 }
4750                                 else {
4751                                         dprintk("Unable to get I/O port2: "
4752                                                         "0x%.4x (0x%.4x) + 0x%.2x\n",
4753                                                         io->io2.minimum, io->io2.maximum,
4754                                                         io->io2.address_length);
4755                                         release_region(io->io1.minimum,
4756                                                         io->io1.address_length);
4757                                 }
4758                         }
4759                         else {
4760                                 spic_dev.cur_ioport = io;
4761                                 break;
4762                         }
4763                 }
4764         }
4765         if (!spic_dev.cur_ioport) {
4766                 pr_err("Failed to request_region\n");
4767                 result = -ENODEV;
4768                 goto err_remove_compat;
4769         }
4770 
4771         /* request IRQ */
4772         list_for_each_entry_reverse(irq, &spic_dev.interrupts, list) {
4773                 if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
4774                                         0, "sony-laptop", &spic_dev)) {
4775                         dprintk("IRQ: %d - triggering: %d - "
4776                                         "polarity: %d - shr: %d\n",
4777                                         irq->irq.interrupts[0],
4778                                         irq->irq.triggering,
4779                                         irq->irq.polarity,
4780                                         irq->irq.sharable);
4781                         spic_dev.cur_irq = irq;
4782                         break;
4783                 }
4784         }
4785         if (!spic_dev.cur_irq) {
4786                 pr_err("Failed to request_irq\n");
4787                 result = -ENODEV;
4788                 goto err_release_region;
4789         }
4790 
4791         /* set resource status _SRS */
4792         result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
4793         if (result) {
4794                 pr_err("Couldn't enable device\n");
4795                 goto err_free_irq;
4796         }
4797 
4798         spic_dev.bluetooth_power = -1;
4799         /* create device attributes */
4800         result = sony_pf_add();
4801         if (result)
4802                 goto err_disable_device;
4803 
4804         result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
4805         if (result)
4806                 goto err_remove_pf;
4807 
4808         pr_info("SPIC setup done.\n");
4809         return 0;
4810 
4811 err_remove_pf:
4812         sony_pf_remove();
4813 
4814 err_disable_device:
4815         sony_pic_disable(device);
4816 
4817 err_free_irq:
4818         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
4819 
4820 err_release_region:
4821         release_region(spic_dev.cur_ioport->io1.minimum,
4822                         spic_dev.cur_ioport->io1.address_length);
4823         if (spic_dev.cur_ioport->io2.minimum)
4824                 release_region(spic_dev.cur_ioport->io2.minimum,
4825                                 spic_dev.cur_ioport->io2.address_length);
4826 
4827 err_remove_compat:
4828         sonypi_compat_exit();
4829 
4830 err_remove_input:
4831         sony_laptop_remove_input();
4832 
4833 err_free_resources:
4834         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
4835                 list_del(&io->list);
4836                 kfree(io);
4837         }
4838         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
4839                 list_del(&irq->list);
4840                 kfree(irq);
4841         }
4842         spic_dev.cur_ioport = NULL;
4843         spic_dev.cur_irq = NULL;
4844 
4845         return result;
4846 }
4847 
4848 #ifdef CONFIG_PM_SLEEP
4849 static int sony_pic_suspend(struct device *dev)
4850 {
4851         if (sony_pic_disable(to_acpi_device(dev)))
4852                 return -ENXIO;
4853         return 0;
4854 }
4855 
4856 static int sony_pic_resume(struct device *dev)
4857 {
4858         sony_pic_enable(to_acpi_device(dev),
4859                         spic_dev.cur_ioport, spic_dev.cur_irq);
4860         return 0;
4861 }
4862 #endif
4863 
4864 static SIMPLE_DEV_PM_OPS(sony_pic_pm, sony_pic_suspend, sony_pic_resume);
4865 
4866 static const struct acpi_device_id sony_pic_device_ids[] = {
4867         {SONY_PIC_HID, 0},
4868         {"", 0},
4869 };
4870 
4871 static struct acpi_driver sony_pic_driver = {
4872         .name = SONY_PIC_DRIVER_NAME,
4873         .class = SONY_PIC_CLASS,
4874         .ids = sony_pic_device_ids,
4875         .owner = THIS_MODULE,
4876         .ops = {
4877                 .add = sony_pic_add,
4878                 .remove = sony_pic_remove,
4879                 },
4880         .drv.pm = &sony_pic_pm,
4881 };
4882 
4883 static struct dmi_system_id __initdata sonypi_dmi_table[] = {
4884         {
4885                 .ident = "Sony Vaio",
4886                 .matches = {
4887                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
4888                         DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
4889                 },
4890         },
4891         {
4892                 .ident = "Sony Vaio",
4893                 .matches = {
4894                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
4895                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
4896                 },
4897         },
4898         { }
4899 };
4900 
4901 static int __init sony_laptop_init(void)
4902 {
4903         int result;
4904 
4905         if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
4906                 result = acpi_bus_register_driver(&sony_pic_driver);
4907                 if (result) {
4908                         pr_err("Unable to register SPIC driver\n");
4909                         goto out;
4910                 }
4911                 spic_drv_registered = 1;
4912         }
4913 
4914         result = acpi_bus_register_driver(&sony_nc_driver);
4915         if (result) {
4916                 pr_err("Unable to register SNC driver\n");
4917                 goto out_unregister_pic;
4918         }
4919 
4920         return 0;
4921 
4922 out_unregister_pic:
4923         if (spic_drv_registered)
4924                 acpi_bus_unregister_driver(&sony_pic_driver);
4925 out:
4926         return result;
4927 }
4928 
4929 static void __exit sony_laptop_exit(void)
4930 {
4931         acpi_bus_unregister_driver(&sony_nc_driver);
4932         if (spic_drv_registered)
4933                 acpi_bus_unregister_driver(&sony_pic_driver);
4934 }
4935 
4936 module_init(sony_laptop_init);
4937 module_exit(sony_laptop_exit);
4938 

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