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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         /* get enabled events and disable them */
1450         sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
1451         sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);
1452 
1453         /* cleanup handles here */
1454         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1455 
1456                 handle = handles->cap[i];
1457 
1458                 if (!handle)
1459                         continue;
1460 
1461                 switch (handle) {
1462                 case 0x0105:
1463                 case 0x0148:
1464                         sony_nc_touchpad_cleanup(pd);
1465                         break;
1466                 case 0x0115:
1467                 case 0x0136:
1468                 case 0x013f:
1469                         sony_nc_battery_care_cleanup(pd);
1470                         break;
1471                 case 0x0119:
1472                 case 0x015D:
1473                         sony_nc_lid_resume_cleanup(pd);
1474                         break;
1475                 case 0x0122:
1476                         sony_nc_thermal_cleanup(pd);
1477                         break;
1478                 case 0x0128:
1479                 case 0x0146:
1480                 case 0x015B:
1481                         sony_nc_gfx_switch_cleanup(pd);
1482                         break;
1483                 case 0x0131:
1484                         sony_nc_highspeed_charging_cleanup(pd);
1485                         break;
1486                 case 0x0124:
1487                 case 0x0135:
1488                         sony_nc_rfkill_cleanup();
1489                         break;
1490                 case 0x0137:
1491                 case 0x0143:
1492                 case 0x014b:
1493                 case 0x014c:
1494                 case 0x0153:
1495                 case 0x0163:
1496                         sony_nc_kbd_backlight_cleanup(pd, handle);
1497                         break;
1498                 case 0x0121:
1499                         sony_nc_lowbatt_cleanup(pd);
1500                         break;
1501                 case 0x0149:
1502                         sony_nc_fanspeed_cleanup(pd);
1503                         break;
1504                 case 0x0155:
1505                         sony_nc_usb_charge_cleanup(pd);
1506                         break;
1507                 case 0x011D:
1508                         sony_nc_panelid_cleanup(pd);
1509                         break;
1510                 case 0x0168:
1511                         sony_nc_smart_conn_cleanup(pd);
1512                         break;
1513                 default:
1514                         continue;
1515                 }
1516         }
1517 
1518         /* finally cleanup the handles list */
1519         sony_nc_handles_cleanup(pd);
1520 }
1521 
1522 #ifdef CONFIG_PM_SLEEP
1523 static void sony_nc_function_resume(void)
1524 {
1525         unsigned int i, result, bitmask, arg;
1526 
1527         dprintk("Resuming SNC device\n");
1528 
1529         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1530                 unsigned int handle = handles->cap[i];
1531 
1532                 if (!handle)
1533                         continue;
1534 
1535                 switch (handle) {
1536                 case 0x0100:
1537                 case 0x0101:
1538                 case 0x0127:
1539                         /* re-enable hotkeys */
1540                         sony_call_snc_handle(handle, 0, &result);
1541                         break;
1542                 case 0x0102:
1543                         /* re-enable hotkeys */
1544                         sony_call_snc_handle(handle, 0x100, &result);
1545                         break;
1546                 case 0x0122:
1547                         sony_nc_thermal_resume();
1548                         break;
1549                 case 0x0124:
1550                 case 0x0135:
1551                         sony_nc_rfkill_update();
1552                         break;
1553                 default:
1554                         continue;
1555                 }
1556         }
1557 
1558         /* Enable all events */
1559         arg = 0x10;
1560         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1561                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1562                                 &result);
1563 }
1564 
1565 static int sony_nc_resume(struct device *dev)
1566 {
1567         struct sony_nc_value *item;
1568 
1569         for (item = sony_nc_values; item->name; item++) {
1570                 int ret;
1571 
1572                 if (!item->valid)
1573                         continue;
1574                 ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
1575                                        &item->value, NULL);
1576                 if (ret < 0) {
1577                         pr_err("%s: %d\n", __func__, ret);
1578                         break;
1579                 }
1580         }
1581 
1582         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
1583                 int arg = 1;
1584                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
1585                         dprintk("ECON Method failed\n");
1586         }
1587 
1588         if (acpi_has_method(sony_nc_acpi_handle, "SN00"))
1589                 sony_nc_function_resume();
1590 
1591         return 0;
1592 }
1593 #endif
1594 
1595 static SIMPLE_DEV_PM_OPS(sony_nc_pm, NULL, sony_nc_resume);
1596 
1597 static void sony_nc_rfkill_cleanup(void)
1598 {
1599         int i;
1600 
1601         for (i = 0; i < N_SONY_RFKILL; i++) {
1602                 if (sony_rfkill_devices[i]) {
1603                         rfkill_unregister(sony_rfkill_devices[i]);
1604                         rfkill_destroy(sony_rfkill_devices[i]);
1605                 }
1606         }
1607 }
1608 
1609 static int sony_nc_rfkill_set(void *data, bool blocked)
1610 {
1611         int result;
1612         int argument = sony_rfkill_address[(long) data] + 0x100;
1613 
1614         if (!blocked)
1615                 argument |= 0x070000;
1616 
1617         return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1618 }
1619 
1620 static const struct rfkill_ops sony_rfkill_ops = {
1621         .set_block = sony_nc_rfkill_set,
1622 };
1623 
1624 static int sony_nc_setup_rfkill(struct acpi_device *device,
1625                                 enum sony_nc_rfkill nc_type)
1626 {
1627         int err = 0;
1628         struct rfkill *rfk;
1629         enum rfkill_type type;
1630         const char *name;
1631         int result;
1632         bool hwblock, swblock;
1633 
1634         switch (nc_type) {
1635         case SONY_WIFI:
1636                 type = RFKILL_TYPE_WLAN;
1637                 name = "sony-wifi";
1638                 break;
1639         case SONY_BLUETOOTH:
1640                 type = RFKILL_TYPE_BLUETOOTH;
1641                 name = "sony-bluetooth";
1642                 break;
1643         case SONY_WWAN:
1644                 type = RFKILL_TYPE_WWAN;
1645                 name = "sony-wwan";
1646                 break;
1647         case SONY_WIMAX:
1648                 type = RFKILL_TYPE_WIMAX;
1649                 name = "sony-wimax";
1650                 break;
1651         default:
1652                 return -EINVAL;
1653         }
1654 
1655         rfk = rfkill_alloc(name, &device->dev, type,
1656                            &sony_rfkill_ops, (void *)nc_type);
1657         if (!rfk)
1658                 return -ENOMEM;
1659 
1660         if (sony_call_snc_handle(sony_rfkill_handle, 0x200, &result) < 0) {
1661                 rfkill_destroy(rfk);
1662                 return -1;
1663         }
1664         hwblock = !(result & 0x1);
1665 
1666         if (sony_call_snc_handle(sony_rfkill_handle,
1667                                 sony_rfkill_address[nc_type],
1668                                 &result) < 0) {
1669                 rfkill_destroy(rfk);
1670                 return -1;
1671         }
1672         swblock = !(result & 0x2);
1673 
1674         rfkill_init_sw_state(rfk, swblock);
1675         rfkill_set_hw_state(rfk, hwblock);
1676 
1677         err = rfkill_register(rfk);
1678         if (err) {
1679                 rfkill_destroy(rfk);
1680                 return err;
1681         }
1682         sony_rfkill_devices[nc_type] = rfk;
1683         return err;
1684 }
1685 
1686 static void sony_nc_rfkill_update(void)
1687 {
1688         enum sony_nc_rfkill i;
1689         int result;
1690         bool hwblock;
1691 
1692         sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
1693         hwblock = !(result & 0x1);
1694 
1695         for (i = 0; i < N_SONY_RFKILL; i++) {
1696                 int argument = sony_rfkill_address[i];
1697 
1698                 if (!sony_rfkill_devices[i])
1699                         continue;
1700 
1701                 if (hwblock) {
1702                         if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) {
1703                                 /* we already know we're blocked */
1704                         }
1705                         continue;
1706                 }
1707 
1708                 sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1709                 rfkill_set_states(sony_rfkill_devices[i],
1710                                   !(result & 0x2), false);
1711         }
1712 }
1713 
1714 static int sony_nc_rfkill_setup(struct acpi_device *device,
1715                 unsigned int handle)
1716 {
1717         u64 offset;
1718         int i;
1719         unsigned char buffer[32] = { 0 };
1720 
1721         offset = sony_find_snc_handle(handle);
1722         sony_rfkill_handle = handle;
1723 
1724         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
1725                         32);
1726         if (i < 0)
1727                 return i;
1728 
1729         /* The buffer is filled with magic numbers describing the devices
1730          * available, 0xff terminates the enumeration.
1731          * Known codes:
1732          *      0x00 WLAN
1733          *      0x10 BLUETOOTH
1734          *      0x20 WWAN GPRS-EDGE
1735          *      0x21 WWAN HSDPA
1736          *      0x22 WWAN EV-DO
1737          *      0x23 WWAN GPS
1738          *      0x25 Gobi WWAN no GPS
1739          *      0x26 Gobi WWAN + GPS
1740          *      0x28 Gobi WWAN no GPS
1741          *      0x29 Gobi WWAN + GPS
1742          *      0x30 WIMAX
1743          *      0x50 Gobi WWAN no GPS
1744          *      0x51 Gobi WWAN + GPS
1745          *      0x70 no SIM card slot
1746          *      0x71 SIM card slot
1747          */
1748         for (i = 0; i < ARRAY_SIZE(buffer); i++) {
1749 
1750                 if (buffer[i] == 0xff)
1751                         break;
1752 
1753                 dprintk("Radio devices, found 0x%.2x\n", buffer[i]);
1754 
1755                 if (buffer[i] == 0 && !sony_rfkill_devices[SONY_WIFI])
1756                         sony_nc_setup_rfkill(device, SONY_WIFI);
1757 
1758                 if (buffer[i] == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH])
1759                         sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
1760 
1761                 if (((0xf0 & buffer[i]) == 0x20 ||
1762                                         (0xf0 & buffer[i]) == 0x50) &&
1763                                 !sony_rfkill_devices[SONY_WWAN])
1764                         sony_nc_setup_rfkill(device, SONY_WWAN);
1765 
1766                 if (buffer[i] == 0x30 && !sony_rfkill_devices[SONY_WIMAX])
1767                         sony_nc_setup_rfkill(device, SONY_WIMAX);
1768         }
1769         return 0;
1770 }
1771 
1772 /* Keyboard backlight feature */
1773 struct kbd_backlight {
1774         unsigned int handle;
1775         unsigned int base;
1776         unsigned int mode;
1777         unsigned int timeout;
1778         unsigned int has_timeout;
1779         struct device_attribute mode_attr;
1780         struct device_attribute timeout_attr;
1781 };
1782 
1783 static struct kbd_backlight *kbdbl_ctl;
1784 
1785 static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value)
1786 {
1787         int result;
1788 
1789         if (value > 2)
1790                 return -EINVAL;
1791 
1792         if (sony_call_snc_handle(kbdbl_ctl->handle,
1793                                 (value << 0x10) | (kbdbl_ctl->base), &result))
1794                 return -EIO;
1795 
1796         /* Try to turn the light on/off immediately */
1797         if (value != 1)
1798                 sony_call_snc_handle(kbdbl_ctl->handle,
1799                                 (value << 0x0f) | (kbdbl_ctl->base + 0x100),
1800                                 &result);
1801 
1802         kbdbl_ctl->mode = value;
1803 
1804         return 0;
1805 }
1806 
1807 static ssize_t sony_nc_kbd_backlight_mode_store(struct device *dev,
1808                 struct device_attribute *attr,
1809                 const char *buffer, size_t count)
1810 {
1811         int ret = 0;
1812         unsigned long value;
1813 
1814         if (count > 31)
1815                 return -EINVAL;
1816 
1817         if (kstrtoul(buffer, 10, &value))
1818                 return -EINVAL;
1819 
1820         ret = __sony_nc_kbd_backlight_mode_set(value);
1821         if (ret < 0)
1822                 return ret;
1823 
1824         return count;
1825 }
1826 
1827 static ssize_t sony_nc_kbd_backlight_mode_show(struct device *dev,
1828                 struct device_attribute *attr, char *buffer)
1829 {
1830         ssize_t count = 0;
1831         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->mode);
1832         return count;
1833 }
1834 
1835 static int __sony_nc_kbd_backlight_timeout_set(u8 value)
1836 {
1837         int result;
1838 
1839         if (value > 3)
1840                 return -EINVAL;
1841 
1842         if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) |
1843                                 (kbdbl_ctl->base + 0x200), &result))
1844                 return -EIO;
1845 
1846         kbdbl_ctl->timeout = value;
1847 
1848         return 0;
1849 }
1850 
1851 static ssize_t sony_nc_kbd_backlight_timeout_store(struct device *dev,
1852                 struct device_attribute *attr,
1853                 const char *buffer, size_t count)
1854 {
1855         int ret = 0;
1856         unsigned long value;
1857 
1858         if (count > 31)
1859                 return -EINVAL;
1860 
1861         if (kstrtoul(buffer, 10, &value))
1862                 return -EINVAL;
1863 
1864         ret = __sony_nc_kbd_backlight_timeout_set(value);
1865         if (ret < 0)
1866                 return ret;
1867 
1868         return count;
1869 }
1870 
1871 static ssize_t sony_nc_kbd_backlight_timeout_show(struct device *dev,
1872                 struct device_attribute *attr, char *buffer)
1873 {
1874         ssize_t count = 0;
1875         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->timeout);
1876         return count;
1877 }
1878 
1879 static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
1880                 unsigned int handle)
1881 {
1882         int result;
1883         int probe_base = 0;
1884         int ctl_base = 0;
1885         int ret = 0;
1886 
1887         if (kbdbl_ctl) {
1888                 pr_warn("handle 0x%.4x: keyboard backlight setup already done for 0x%.4x\n",
1889                                 handle, kbdbl_ctl->handle);
1890                 return -EBUSY;
1891         }
1892 
1893         /* verify the kbd backlight presence, some of these handles are not used
1894          * for keyboard backlight only
1895          */
1896         switch (handle) {
1897         case 0x0153:
1898                 probe_base = 0x0;
1899                 ctl_base = 0x0;
1900                 break;
1901         case 0x0137:
1902                 probe_base = 0x0B00;
1903                 ctl_base = 0x0C00;
1904                 break;
1905         default:
1906                 probe_base = 0x0100;
1907                 ctl_base = 0x4000;
1908                 break;
1909         }
1910 
1911         ret = sony_call_snc_handle(handle, probe_base, &result);
1912         if (ret)
1913                 return ret;
1914 
1915         if ((handle == 0x0137 && !(result & 0x02)) ||
1916                         !(result & 0x01)) {
1917                 dprintk("no backlight keyboard found\n");
1918                 return 0;
1919         }
1920 
1921         kbdbl_ctl = kzalloc(sizeof(*kbdbl_ctl), GFP_KERNEL);
1922         if (!kbdbl_ctl)
1923                 return -ENOMEM;
1924 
1925         kbdbl_ctl->mode = kbd_backlight;
1926         kbdbl_ctl->timeout = kbd_backlight_timeout;
1927         kbdbl_ctl->handle = handle;
1928         kbdbl_ctl->base = ctl_base;
1929         /* Some models do not allow timeout control */
1930         kbdbl_ctl->has_timeout = handle != 0x0153;
1931 
1932         sysfs_attr_init(&kbdbl_ctl->mode_attr.attr);
1933         kbdbl_ctl->mode_attr.attr.name = "kbd_backlight";
1934         kbdbl_ctl->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
1935         kbdbl_ctl->mode_attr.show = sony_nc_kbd_backlight_mode_show;
1936         kbdbl_ctl->mode_attr.store = sony_nc_kbd_backlight_mode_store;
1937 
1938         ret = device_create_file(&pd->dev, &kbdbl_ctl->mode_attr);
1939         if (ret)
1940                 goto outkzalloc;
1941 
1942         __sony_nc_kbd_backlight_mode_set(kbdbl_ctl->mode);
1943 
1944         if (kbdbl_ctl->has_timeout) {
1945                 sysfs_attr_init(&kbdbl_ctl->timeout_attr.attr);
1946                 kbdbl_ctl->timeout_attr.attr.name = "kbd_backlight_timeout";
1947                 kbdbl_ctl->timeout_attr.attr.mode = S_IRUGO | S_IWUSR;
1948                 kbdbl_ctl->timeout_attr.show =
1949                         sony_nc_kbd_backlight_timeout_show;
1950                 kbdbl_ctl->timeout_attr.store =
1951                         sony_nc_kbd_backlight_timeout_store;
1952 
1953                 ret = device_create_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1954                 if (ret)
1955                         goto outmode;
1956 
1957                 __sony_nc_kbd_backlight_timeout_set(kbdbl_ctl->timeout);
1958         }
1959 
1960 
1961         return 0;
1962 
1963 outmode:
1964         device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1965 outkzalloc:
1966         kfree(kbdbl_ctl);
1967         kbdbl_ctl = NULL;
1968         return ret;
1969 }
1970 
1971 static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
1972                 unsigned int handle)
1973 {
1974         if (kbdbl_ctl && handle == kbdbl_ctl->handle) {
1975                 device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1976                 if (kbdbl_ctl->has_timeout)
1977                         device_remove_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1978                 kfree(kbdbl_ctl);
1979                 kbdbl_ctl = NULL;
1980         }
1981 }
1982 
1983 struct battery_care_control {
1984         struct device_attribute attrs[2];
1985         unsigned int handle;
1986 };
1987 static struct battery_care_control *bcare_ctl;
1988 
1989 static ssize_t sony_nc_battery_care_limit_store(struct device *dev,
1990                 struct device_attribute *attr,
1991                 const char *buffer, size_t count)
1992 {
1993         unsigned int result, cmd;
1994         unsigned long value;
1995 
1996         if (count > 31)
1997                 return -EINVAL;
1998 
1999         if (kstrtoul(buffer, 10, &value))
2000                 return -EINVAL;
2001 
2002         /*  limit values (2 bits):
2003          *  00 - none
2004          *  01 - 80%
2005          *  10 - 50%
2006          *  11 - 100%
2007          *
2008          *  bit 0: 0 disable BCL, 1 enable BCL
2009          *  bit 1: 1 tell to store the battery limit (see bits 6,7) too
2010          *  bits 2,3: reserved
2011          *  bits 4,5: store the limit into the EC
2012          *  bits 6,7: store the limit into the battery
2013          */
2014         cmd = 0;
2015 
2016         if (value > 0) {
2017                 if (value <= 50)
2018                         cmd = 0x20;
2019 
2020                 else if (value <= 80)
2021                         cmd = 0x10;
2022 
2023                 else if (value <= 100)
2024                         cmd = 0x30;
2025 
2026                 else
2027                         return -EINVAL;
2028 
2029                 /*
2030                  * handle 0x0115 should allow storing on battery too;
2031                  * handle 0x0136 same as 0x0115 + health status;
2032                  * handle 0x013f, same as 0x0136 but no storing on the battery
2033                  */
2034                 if (bcare_ctl->handle != 0x013f)
2035                         cmd = cmd | (cmd << 2);
2036 
2037                 cmd = (cmd | 0x1) << 0x10;
2038         }
2039 
2040         if (sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result))
2041                 return -EIO;
2042 
2043         return count;
2044 }
2045 
2046 static ssize_t sony_nc_battery_care_limit_show(struct device *dev,
2047                 struct device_attribute *attr, char *buffer)
2048 {
2049         unsigned int result, status;
2050 
2051         if (sony_call_snc_handle(bcare_ctl->handle, 0x0000, &result))
2052                 return -EIO;
2053 
2054         status = (result & 0x01) ? ((result & 0x30) >> 0x04) : 0;
2055         switch (status) {
2056         case 1:
2057                 status = 80;
2058                 break;
2059         case 2:
2060                 status = 50;
2061                 break;
2062         case 3:
2063                 status = 100;
2064                 break;
2065         default:
2066                 status = 0;
2067                 break;
2068         }
2069 
2070         return snprintf(buffer, PAGE_SIZE, "%d\n", status);
2071 }
2072 
2073 static ssize_t sony_nc_battery_care_health_show(struct device *dev,
2074                 struct device_attribute *attr, char *buffer)
2075 {
2076         ssize_t count = 0;
2077         unsigned int health;
2078 
2079         if (sony_call_snc_handle(bcare_ctl->handle, 0x0200, &health))
2080                 return -EIO;
2081 
2082         count = snprintf(buffer, PAGE_SIZE, "%d\n", health & 0xff);
2083 
2084         return count;
2085 }
2086 
2087 static int sony_nc_battery_care_setup(struct platform_device *pd,
2088                 unsigned int handle)
2089 {
2090         int ret = 0;
2091 
2092         bcare_ctl = kzalloc(sizeof(struct battery_care_control), GFP_KERNEL);
2093         if (!bcare_ctl)
2094                 return -ENOMEM;
2095 
2096         bcare_ctl->handle = handle;
2097 
2098         sysfs_attr_init(&bcare_ctl->attrs[0].attr);
2099         bcare_ctl->attrs[0].attr.name = "battery_care_limiter";
2100         bcare_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
2101         bcare_ctl->attrs[0].show = sony_nc_battery_care_limit_show;
2102         bcare_ctl->attrs[0].store = sony_nc_battery_care_limit_store;
2103 
2104         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[0]);
2105         if (ret)
2106                 goto outkzalloc;
2107 
2108         /* 0x0115 is for models with no health reporting capability */
2109         if (handle == 0x0115)
2110                 return 0;
2111 
2112         sysfs_attr_init(&bcare_ctl->attrs[1].attr);
2113         bcare_ctl->attrs[1].attr.name = "battery_care_health";
2114         bcare_ctl->attrs[1].attr.mode = S_IRUGO;
2115         bcare_ctl->attrs[1].show = sony_nc_battery_care_health_show;
2116 
2117         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[1]);
2118         if (ret)
2119                 goto outlimiter;
2120 
2121         return 0;
2122 
2123 outlimiter:
2124         device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2125 
2126 outkzalloc:
2127         kfree(bcare_ctl);
2128         bcare_ctl = NULL;
2129 
2130         return ret;
2131 }
2132 
2133 static void sony_nc_battery_care_cleanup(struct platform_device *pd)
2134 {
2135         if (bcare_ctl) {
2136                 device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2137                 if (bcare_ctl->handle != 0x0115)
2138                         device_remove_file(&pd->dev, &bcare_ctl->attrs[1]);
2139 
2140                 kfree(bcare_ctl);
2141                 bcare_ctl = NULL;
2142         }
2143 }
2144 
2145 struct snc_thermal_ctrl {
2146         unsigned int mode;
2147         unsigned int profiles;
2148         struct device_attribute mode_attr;
2149         struct device_attribute profiles_attr;
2150 };
2151 static struct snc_thermal_ctrl *th_handle;
2152 
2153 #define THM_PROFILE_MAX 3
2154 static const char * const snc_thermal_profiles[] = {
2155         "balanced",
2156         "silent",
2157         "performance"
2158 };
2159 
2160 static int sony_nc_thermal_mode_set(unsigned short mode)
2161 {
2162         unsigned int result;
2163 
2164         /* the thermal profile seems to be a two bit bitmask:
2165          * lsb -> silent
2166          * msb -> performance
2167          * no bit set is the normal operation and is always valid
2168          * Some vaio models only have "balanced" and "performance"
2169          */
2170         if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
2171                 return -EINVAL;
2172 
2173         if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
2174                 return -EIO;
2175 
2176         th_handle->mode = mode;
2177 
2178         return 0;
2179 }
2180 
2181 static int sony_nc_thermal_mode_get(void)
2182 {
2183         unsigned int result;
2184 
2185         if (sony_call_snc_handle(0x0122, 0x0100, &result))
2186                 return -EIO;
2187 
2188         return result & 0xff;
2189 }
2190 
2191 static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
2192                 struct device_attribute *attr, char *buffer)
2193 {
2194         short cnt;
2195         size_t idx = 0;
2196 
2197         for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
2198                 if (!cnt || (th_handle->profiles & cnt))
2199                         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
2200                                         snc_thermal_profiles[cnt]);
2201         }
2202         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
2203 
2204         return idx;
2205 }
2206 
2207 static ssize_t sony_nc_thermal_mode_store(struct device *dev,
2208                 struct device_attribute *attr,
2209                 const char *buffer, size_t count)
2210 {
2211         unsigned short cmd;
2212         size_t len = count;
2213 
2214         if (count == 0)
2215                 return -EINVAL;
2216 
2217         /* skip the newline if present */
2218         if (buffer[len - 1] == '\n')
2219                 len--;
2220 
2221         for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
2222                 if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
2223                         break;
2224 
2225         if (sony_nc_thermal_mode_set(cmd))
2226                 return -EIO;
2227 
2228         return count;
2229 }
2230 
2231 static ssize_t sony_nc_thermal_mode_show(struct device *dev,
2232                 struct device_attribute *attr, char *buffer)
2233 {
2234         ssize_t count = 0;
2235         int mode = sony_nc_thermal_mode_get();
2236 
2237         if (mode < 0)
2238                 return mode;
2239 
2240         count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
2241 
2242         return count;
2243 }
2244 
2245 static int sony_nc_thermal_setup(struct platform_device *pd)
2246 {
2247         int ret = 0;
2248         th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
2249         if (!th_handle)
2250                 return -ENOMEM;
2251 
2252         ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
2253         if (ret) {
2254                 pr_warn("couldn't to read the thermal profiles\n");
2255                 goto outkzalloc;
2256         }
2257 
2258         ret = sony_nc_thermal_mode_get();
2259         if (ret < 0) {
2260                 pr_warn("couldn't to read the current thermal profile");
2261                 goto outkzalloc;
2262         }
2263         th_handle->mode = ret;
2264 
2265         sysfs_attr_init(&th_handle->profiles_attr.attr);
2266         th_handle->profiles_attr.attr.name = "thermal_profiles";
2267         th_handle->profiles_attr.attr.mode = S_IRUGO;
2268         th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
2269 
2270         sysfs_attr_init(&th_handle->mode_attr.attr);
2271         th_handle->mode_attr.attr.name = "thermal_control";
2272         th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
2273         th_handle->mode_attr.show = sony_nc_thermal_mode_show;
2274         th_handle->mode_attr.store = sony_nc_thermal_mode_store;
2275 
2276         ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
2277         if (ret)
2278                 goto outkzalloc;
2279 
2280         ret = device_create_file(&pd->dev, &th_handle->mode_attr);
2281         if (ret)
2282                 goto outprofiles;
2283 
2284         return 0;
2285 
2286 outprofiles:
2287         device_remove_file(&pd->dev, &th_handle->profiles_attr);
2288 outkzalloc:
2289         kfree(th_handle);
2290         th_handle = NULL;
2291         return ret;
2292 }
2293 
2294 static void sony_nc_thermal_cleanup(struct platform_device *pd)
2295 {
2296         if (th_handle) {
2297                 device_remove_file(&pd->dev, &th_handle->profiles_attr);
2298                 device_remove_file(&pd->dev, &th_handle->mode_attr);
2299                 kfree(th_handle);
2300                 th_handle = NULL;
2301         }
2302 }
2303 
2304 #ifdef CONFIG_PM_SLEEP
2305 static void sony_nc_thermal_resume(void)
2306 {
2307         unsigned int status = sony_nc_thermal_mode_get();
2308 
2309         if (status != th_handle->mode)
2310                 sony_nc_thermal_mode_set(th_handle->mode);
2311 }
2312 #endif
2313 
2314 /* resume on LID open */
2315 #define LID_RESUME_S5   0
2316 #define LID_RESUME_S4   1
2317 #define LID_RESUME_S3   2
2318 #define LID_RESUME_MAX  3
2319 struct snc_lid_resume_control {
2320         struct device_attribute attrs[LID_RESUME_MAX];
2321         unsigned int status;
2322         int handle;
2323 };
2324 static struct snc_lid_resume_control *lid_ctl;
2325 
2326 static ssize_t sony_nc_lid_resume_store(struct device *dev,
2327                                         struct device_attribute *attr,
2328                                         const char *buffer, size_t count)
2329 {
2330         unsigned int result;
2331         unsigned long value;
2332         unsigned int pos = LID_RESUME_S5;
2333         if (count > 31)
2334                 return -EINVAL;
2335 
2336         if (kstrtoul(buffer, 10, &value) || value > 1)
2337                 return -EINVAL;
2338 
2339         /* the value we have to write to SNC is a bitmask:
2340          * +--------------+
2341          * | S3 | S4 | S5 |
2342          * +--------------+
2343          *   2    1    0
2344          */
2345         while (pos < LID_RESUME_MAX) {
2346                 if (&lid_ctl->attrs[pos].attr == &attr->attr)
2347                         break;
2348                 pos++;
2349         }
2350         if (pos == LID_RESUME_MAX)
2351                 return -EINVAL;
2352 
2353         if (value)
2354                 value = lid_ctl->status | (1 << pos);
2355         else
2356                 value = lid_ctl->status & ~(1 << pos);
2357 
2358         if (sony_call_snc_handle(lid_ctl->handle, value << 0x10 | 0x0100,
2359                                 &result))
2360                 return -EIO;
2361 
2362         lid_ctl->status = value;
2363 
2364         return count;
2365 }
2366 
2367 static ssize_t sony_nc_lid_resume_show(struct device *dev,
2368                                         struct device_attribute *attr,
2369                                         char *buffer)
2370 {
2371         unsigned int pos = LID_RESUME_S5;
2372 
2373         while (pos < LID_RESUME_MAX) {
2374                 if (&lid_ctl->attrs[pos].attr == &attr->attr)
2375                         return snprintf(buffer, PAGE_SIZE, "%d\n",
2376                                         (lid_ctl->status >> pos) & 0x01);
2377                 pos++;
2378         }
2379         return -EINVAL;
2380 }
2381 
2382 static int sony_nc_lid_resume_setup(struct platform_device *pd,
2383                                         unsigned int handle)
2384 {
2385         unsigned int result;
2386         int i;
2387 
2388         if (sony_call_snc_handle(handle, 0x0000, &result))
2389                 return -EIO;
2390 
2391         lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
2392         if (!lid_ctl)
2393                 return -ENOMEM;
2394 
2395         lid_ctl->status = result & 0x7;
2396         lid_ctl->handle = handle;
2397 
2398         sysfs_attr_init(&lid_ctl->attrs[0].attr);
2399         lid_ctl->attrs[LID_RESUME_S5].attr.name = "lid_resume_S5";
2400         lid_ctl->attrs[LID_RESUME_S5].attr.mode = S_IRUGO | S_IWUSR;
2401         lid_ctl->attrs[LID_RESUME_S5].show = sony_nc_lid_resume_show;
2402         lid_ctl->attrs[LID_RESUME_S5].store = sony_nc_lid_resume_store;
2403 
2404         if (handle == 0x0119) {
2405                 sysfs_attr_init(&lid_ctl->attrs[1].attr);
2406                 lid_ctl->attrs[LID_RESUME_S4].attr.name = "lid_resume_S4";
2407                 lid_ctl->attrs[LID_RESUME_S4].attr.mode = S_IRUGO | S_IWUSR;
2408                 lid_ctl->attrs[LID_RESUME_S4].show = sony_nc_lid_resume_show;
2409                 lid_ctl->attrs[LID_RESUME_S4].store = sony_nc_lid_resume_store;
2410 
2411                 sysfs_attr_init(&lid_ctl->attrs[2].attr);
2412                 lid_ctl->attrs[LID_RESUME_S3].attr.name = "lid_resume_S3";
2413                 lid_ctl->attrs[LID_RESUME_S3].attr.mode = S_IRUGO | S_IWUSR;
2414                 lid_ctl->attrs[LID_RESUME_S3].show = sony_nc_lid_resume_show;
2415                 lid_ctl->attrs[LID_RESUME_S3].store = sony_nc_lid_resume_store;
2416         }
2417         for (i = 0; i < LID_RESUME_MAX &&
2418                         lid_ctl->attrs[i].attr.name; i++) {
2419                 result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
2420                 if (result)
2421                         goto liderror;
2422         }
2423 
2424         return 0;
2425 
2426 liderror:
2427         for (i--; i >= 0; i--)
2428                 device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2429 
2430         kfree(lid_ctl);
2431         lid_ctl = NULL;
2432 
2433         return result;
2434 }
2435 
2436 static void sony_nc_lid_resume_cleanup(struct platform_device *pd)
2437 {
2438         int i;
2439 
2440         if (lid_ctl) {
2441                 for (i = 0; i < LID_RESUME_MAX; i++) {
2442                         if (!lid_ctl->attrs[i].attr.name)
2443                                 break;
2444 
2445                         device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2446                 }
2447 
2448                 kfree(lid_ctl);
2449                 lid_ctl = NULL;
2450         }
2451 }
2452 
2453 /* GFX Switch position */
2454 enum gfx_switch {
2455         SPEED,
2456         STAMINA,
2457         AUTO
2458 };
2459 struct snc_gfx_switch_control {
2460         struct device_attribute attr;
2461         unsigned int handle;
2462 };
2463 static struct snc_gfx_switch_control *gfxs_ctl;
2464 
2465 /* returns 0 for speed, 1 for stamina */
2466 static int __sony_nc_gfx_switch_status_get(void)
2467 {
2468         unsigned int result;
2469 
2470         if (sony_call_snc_handle(gfxs_ctl->handle,
2471                                 gfxs_ctl->handle == 0x015B ? 0x0000 : 0x0100,
2472                                 &result))
2473                 return -EIO;
2474 
2475         switch (gfxs_ctl->handle) {
2476         case 0x0146:
2477                 /* 1: discrete GFX (speed)
2478                  * 0: integrated GFX (stamina)
2479                  */
2480                 return result & 0x1 ? SPEED : STAMINA;
2481                 break;
2482         case 0x015B:
2483                 /* 0: discrete GFX (speed)
2484                  * 1: integrated GFX (stamina)
2485                  */
2486                 return result & 0x1 ? STAMINA : SPEED;
2487                 break;
2488         case 0x0128:
2489                 /* it's a more elaborated bitmask, for now:
2490                  * 2: integrated GFX (stamina)
2491                  * 0: discrete GFX (speed)
2492                  */
2493                 dprintk("GFX Status: 0x%x\n", result);
2494                 return result & 0x80 ? AUTO :
2495                         result & 0x02 ? STAMINA : SPEED;
2496                 break;
2497         }
2498         return -EINVAL;
2499 }
2500 
2501 static ssize_t sony_nc_gfx_switch_status_show(struct device *dev,
2502                                        struct device_attribute *attr,
2503                                        char *buffer)
2504 {
2505         int pos = __sony_nc_gfx_switch_status_get();
2506 
2507         if (pos < 0)
2508                 return pos;
2509 
2510         return snprintf(buffer, PAGE_SIZE, "%s\n",
2511                                         pos == SPEED ? "speed" :
2512                                         pos == STAMINA ? "stamina" :
2513                                         pos == AUTO ? "auto" : "unknown");
2514 }
2515 
2516 static int sony_nc_gfx_switch_setup(struct platform_device *pd,
2517                 unsigned int handle)
2518 {
2519         unsigned int result;
2520 
2521         gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL);
2522         if (!gfxs_ctl)
2523                 return -ENOMEM;
2524 
2525         gfxs_ctl->handle = handle;
2526 
2527         sysfs_attr_init(&gfxs_ctl->attr.attr);
2528         gfxs_ctl->attr.attr.name = "gfx_switch_status";
2529         gfxs_ctl->attr.attr.mode = S_IRUGO;
2530         gfxs_ctl->attr.show = sony_nc_gfx_switch_status_show;
2531 
2532         result = device_create_file(&pd->dev, &gfxs_ctl->attr);
2533         if (result)
2534                 goto gfxerror;
2535 
2536         return 0;
2537 
2538 gfxerror:
2539         kfree(gfxs_ctl);
2540         gfxs_ctl = NULL;
2541 
2542         return result;
2543 }
2544 
2545 static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
2546 {
2547         if (gfxs_ctl) {
2548                 device_remove_file(&pd->dev, &gfxs_ctl->attr);
2549 
2550                 kfree(gfxs_ctl);
2551                 gfxs_ctl = NULL;
2552         }
2553 }
2554 
2555 /* High speed charging function */
2556 static struct device_attribute *hsc_handle;
2557 
2558 static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
2559                 struct device_attribute *attr,
2560                 const char *buffer, size_t count)
2561 {
2562         unsigned int result;
2563         unsigned long value;
2564 
2565         if (count > 31)
2566                 return -EINVAL;
2567 
2568         if (kstrtoul(buffer, 10, &value) || value > 1)
2569                 return -EINVAL;
2570 
2571         if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))
2572                 return -EIO;
2573 
2574         return count;
2575 }
2576 
2577 static ssize_t sony_nc_highspeed_charging_show(struct device *dev,
2578                 struct device_attribute *attr, char *buffer)
2579 {
2580         unsigned int result;
2581 
2582         if (sony_call_snc_handle(0x0131, 0x0100, &result))
2583                 return -EIO;
2584 
2585         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2586 }
2587 
2588 static int sony_nc_highspeed_charging_setup(struct platform_device *pd)
2589 {
2590         unsigned int result;
2591 
2592         if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {
2593                 /* some models advertise the handle but have no implementation
2594                  * for it
2595                  */
2596                 pr_info("No High Speed Charging capability found\n");
2597                 return 0;
2598         }
2599 
2600         hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2601         if (!hsc_handle)
2602                 return -ENOMEM;
2603 
2604         sysfs_attr_init(&hsc_handle->attr);
2605         hsc_handle->attr.name = "battery_highspeed_charging";
2606         hsc_handle->attr.mode = S_IRUGO | S_IWUSR;
2607         hsc_handle->show = sony_nc_highspeed_charging_show;
2608         hsc_handle->store = sony_nc_highspeed_charging_store;
2609 
2610         result = device_create_file(&pd->dev, hsc_handle);
2611         if (result) {
2612                 kfree(hsc_handle);
2613                 hsc_handle = NULL;
2614                 return result;
2615         }
2616 
2617         return 0;
2618 }
2619 
2620 static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
2621 {
2622         if (hsc_handle) {
2623                 device_remove_file(&pd->dev, hsc_handle);
2624                 kfree(hsc_handle);
2625                 hsc_handle = NULL;
2626         }
2627 }
2628 
2629 /* low battery function */
2630 static struct device_attribute *lowbatt_handle;
2631 
2632 static ssize_t sony_nc_lowbatt_store(struct device *dev,
2633                 struct device_attribute *attr,
2634                 const char *buffer, size_t count)
2635 {
2636         unsigned int result;
2637         unsigned long value;
2638 
2639         if (count > 31)
2640                 return -EINVAL;
2641 
2642         if (kstrtoul(buffer, 10, &value) || value > 1)
2643                 return -EINVAL;
2644 
2645         if (sony_call_snc_handle(0x0121, value << 8, &result))
2646                 return -EIO;
2647 
2648         return count;
2649 }
2650 
2651 static ssize_t sony_nc_lowbatt_show(struct device *dev,
2652                 struct device_attribute *attr, char *buffer)
2653 {
2654         unsigned int result;
2655 
2656         if (sony_call_snc_handle(0x0121, 0x0200, &result))
2657                 return -EIO;
2658 
2659         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 1);
2660 }
2661 
2662 static int sony_nc_lowbatt_setup(struct platform_device *pd)
2663 {
2664         unsigned int result;
2665 
2666         lowbatt_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2667         if (!lowbatt_handle)
2668                 return -ENOMEM;
2669 
2670         sysfs_attr_init(&lowbatt_handle->attr);
2671         lowbatt_handle->attr.name = "lowbatt_hibernate";
2672         lowbatt_handle->attr.mode = S_IRUGO | S_IWUSR;
2673         lowbatt_handle->show = sony_nc_lowbatt_show;
2674         lowbatt_handle->store = sony_nc_lowbatt_store;
2675 
2676         result = device_create_file(&pd->dev, lowbatt_handle);
2677         if (result) {
2678                 kfree(lowbatt_handle);
2679                 lowbatt_handle = NULL;
2680                 return result;
2681         }
2682 
2683         return 0;
2684 }
2685 
2686 static void sony_nc_lowbatt_cleanup(struct platform_device *pd)
2687 {
2688         if (lowbatt_handle) {
2689                 device_remove_file(&pd->dev, lowbatt_handle);
2690                 kfree(lowbatt_handle);
2691                 lowbatt_handle = NULL;
2692         }
2693 }
2694 
2695 /* fan speed function */
2696 static struct device_attribute *fan_handle, *hsf_handle;
2697 
2698 static ssize_t sony_nc_hsfan_store(struct device *dev,
2699                 struct device_attribute *attr,
2700                 const char *buffer, size_t count)
2701 {
2702         unsigned int result;
2703         unsigned long value;
2704 
2705         if (count > 31)
2706                 return -EINVAL;
2707 
2708         if (kstrtoul(buffer, 10, &value) || value > 1)
2709                 return -EINVAL;
2710 
2711         if (sony_call_snc_handle(0x0149, value << 0x10 | 0x0200, &result))
2712                 return -EIO;
2713 
2714         return count;
2715 }
2716 
2717 static ssize_t sony_nc_hsfan_show(struct device *dev,
2718                 struct device_attribute *attr, char *buffer)
2719 {
2720         unsigned int result;
2721 
2722         if (sony_call_snc_handle(0x0149, 0x0100, &result))
2723                 return -EIO;
2724 
2725         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2726 }
2727 
2728 static ssize_t sony_nc_fanspeed_show(struct device *dev,
2729                 struct device_attribute *attr, char *buffer)
2730 {
2731         unsigned int result;
2732 
2733         if (sony_call_snc_handle(0x0149, 0x0300, &result))
2734                 return -EIO;
2735 
2736         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0xff);
2737 }
2738 
2739 static int sony_nc_fanspeed_setup(struct platform_device *pd)
2740 {
2741         unsigned int result;
2742 
2743         fan_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2744         if (!fan_handle)
2745                 return -ENOMEM;
2746 
2747         hsf_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2748         if (!hsf_handle) {
2749                 result = -ENOMEM;
2750                 goto out_hsf_handle_alloc;
2751         }
2752 
2753         sysfs_attr_init(&fan_handle->attr);
2754         fan_handle->attr.name = "fanspeed";
2755         fan_handle->attr.mode = S_IRUGO;
2756         fan_handle->show = sony_nc_fanspeed_show;
2757         fan_handle->store = NULL;
2758 
2759         sysfs_attr_init(&hsf_handle->attr);
2760         hsf_handle->attr.name = "fan_forced";
2761         hsf_handle->attr.mode = S_IRUGO | S_IWUSR;
2762         hsf_handle->show = sony_nc_hsfan_show;
2763         hsf_handle->store = sony_nc_hsfan_store;
2764 
2765         result = device_create_file(&pd->dev, fan_handle);
2766         if (result)
2767                 goto out_fan_handle;
2768 
2769         result = device_create_file(&pd->dev, hsf_handle);
2770         if (result)
2771                 goto out_hsf_handle;
2772 
2773         return 0;
2774 
2775 out_hsf_handle:
2776         device_remove_file(&pd->dev, fan_handle);
2777 
2778 out_fan_handle:
2779         kfree(hsf_handle);
2780         hsf_handle = NULL;
2781 
2782 out_hsf_handle_alloc:
2783         kfree(fan_handle);
2784         fan_handle = NULL;
2785         return result;
2786 }
2787 
2788 static void sony_nc_fanspeed_cleanup(struct platform_device *pd)
2789 {
2790         if (fan_handle) {
2791                 device_remove_file(&pd->dev, fan_handle);
2792                 kfree(fan_handle);
2793                 fan_handle = NULL;
2794         }
2795         if (hsf_handle) {
2796                 device_remove_file(&pd->dev, hsf_handle);
2797                 kfree(hsf_handle);
2798                 hsf_handle = NULL;
2799         }
2800 }
2801 
2802 /* USB charge function */
2803 static struct device_attribute *uc_handle;
2804 
2805 static ssize_t sony_nc_usb_charge_store(struct device *dev,
2806                 struct device_attribute *attr,
2807                 const char *buffer, size_t count)
2808 {
2809         unsigned int result;
2810         unsigned long value;
2811 
2812         if (count > 31)
2813                 return -EINVAL;
2814 
2815         if (kstrtoul(buffer, 10, &value) || value > 1)
2816                 return -EINVAL;
2817 
2818         if (sony_call_snc_handle(0x0155, value << 0x10 | 0x0100, &result))
2819                 return -EIO;
2820 
2821         return count;
2822 }
2823 
2824 static ssize_t sony_nc_usb_charge_show(struct device *dev,
2825                 struct device_attribute *attr, char *buffer)
2826 {
2827         unsigned int result;
2828 
2829         if (sony_call_snc_handle(0x0155, 0x0000, &result))
2830                 return -EIO;
2831 
2832         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2833 }
2834 
2835 static int sony_nc_usb_charge_setup(struct platform_device *pd)
2836 {
2837         unsigned int result;
2838 
2839         if (sony_call_snc_handle(0x0155, 0x0000, &result) || !(result & 0x01)) {
2840                 /* some models advertise the handle but have no implementation
2841                  * for it
2842                  */
2843                 pr_info("No USB Charge capability found\n");
2844                 return 0;
2845         }
2846 
2847         uc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2848         if (!uc_handle)
2849                 return -ENOMEM;
2850 
2851         sysfs_attr_init(&uc_handle->attr);
2852         uc_handle->attr.name = "usb_charge";
2853         uc_handle->attr.mode = S_IRUGO | S_IWUSR;
2854         uc_handle->show = sony_nc_usb_charge_show;
2855         uc_handle->store = sony_nc_usb_charge_store;
2856 
2857         result = device_create_file(&pd->dev, uc_handle);
2858         if (result) {
2859                 kfree(uc_handle);
2860                 uc_handle = NULL;
2861                 return result;
2862         }
2863 
2864         return 0;
2865 }
2866 
2867 static void sony_nc_usb_charge_cleanup(struct platform_device *pd)
2868 {
2869         if (uc_handle) {
2870                 device_remove_file(&pd->dev, uc_handle);
2871                 kfree(uc_handle);
2872                 uc_handle = NULL;
2873         }
2874 }
2875 
2876 /* Panel ID function */
2877 static struct device_attribute *panel_handle;
2878 
2879 static ssize_t sony_nc_panelid_show(struct device *dev,
2880                 struct device_attribute *attr, char *buffer)
2881 {
2882         unsigned int result;
2883 
2884         if (sony_call_snc_handle(0x011D, 0x0000, &result))
2885                 return -EIO;
2886 
2887         return snprintf(buffer, PAGE_SIZE, "%d\n", result);
2888 }
2889 
2890 static int sony_nc_panelid_setup(struct platform_device *pd)
2891 {
2892         unsigned int result;
2893 
2894         panel_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2895         if (!panel_handle)
2896                 return -ENOMEM;
2897 
2898         sysfs_attr_init(&panel_handle->attr);
2899         panel_handle->attr.name = "panel_id";
2900         panel_handle->attr.mode = S_IRUGO;
2901         panel_handle->show = sony_nc_panelid_show;
2902         panel_handle->store = NULL;
2903 
2904         result = device_create_file(&pd->dev, panel_handle);
2905         if (result) {
2906                 kfree(panel_handle);
2907                 panel_handle = NULL;
2908                 return result;
2909         }
2910 
2911         return 0;
2912 }
2913 
2914 static void sony_nc_panelid_cleanup(struct platform_device *pd)
2915 {
2916         if (panel_handle) {
2917                 device_remove_file(&pd->dev, panel_handle);
2918                 kfree(panel_handle);
2919                 panel_handle = NULL;
2920         }
2921 }
2922 
2923 /* smart connect function */
2924 static struct device_attribute *sc_handle;
2925 
2926 static ssize_t sony_nc_smart_conn_store(struct device *dev,
2927                 struct device_attribute *attr,
2928                 const char *buffer, size_t count)
2929 {
2930         unsigned int result;
2931         unsigned long value;
2932 
2933         if (count > 31)
2934                 return -EINVAL;
2935 
2936         if (kstrtoul(buffer, 10, &value) || value > 1)
2937                 return -EINVAL;
2938 
2939         if (sony_call_snc_handle(0x0168, value << 0x10, &result))
2940                 return -EIO;
2941 
2942         return count;
2943 }
2944 
2945 static int sony_nc_smart_conn_setup(struct platform_device *pd)
2946 {
2947         unsigned int result;
2948 
2949         sc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2950         if (!sc_handle)
2951                 return -ENOMEM;
2952 
2953         sysfs_attr_init(&sc_handle->attr);
2954         sc_handle->attr.name = "smart_connect";
2955         sc_handle->attr.mode = S_IWUSR;
2956         sc_handle->show = NULL;
2957         sc_handle->store = sony_nc_smart_conn_store;
2958 
2959         result = device_create_file(&pd->dev, sc_handle);
2960         if (result) {
2961                 kfree(sc_handle);
2962                 sc_handle = NULL;
2963                 return result;
2964         }
2965 
2966         return 0;
2967 }
2968 
2969 static void sony_nc_smart_conn_cleanup(struct platform_device *pd)
2970 {
2971         if (sc_handle) {
2972                 device_remove_file(&pd->dev, sc_handle);
2973                 kfree(sc_handle);
2974                 sc_handle = NULL;
2975         }
2976 }
2977 
2978 /* Touchpad enable/disable */
2979 struct touchpad_control {
2980         struct device_attribute attr;
2981         int handle;
2982 };
2983 static struct touchpad_control *tp_ctl;
2984 
2985 static ssize_t sony_nc_touchpad_store(struct device *dev,
2986                 struct device_attribute *attr, const char *buffer, size_t count)
2987 {
2988         unsigned int result;
2989         unsigned long value;
2990 
2991         if (count > 31)
2992                 return -EINVAL;
2993 
2994         if (kstrtoul(buffer, 10, &value) || value > 1)
2995                 return -EINVAL;
2996 
2997         /* sysfs: 0 disabled, 1 enabled
2998          * EC: 0 enabled, 1 disabled
2999          */
3000         if (sony_call_snc_handle(tp_ctl->handle,
3001                                 (!value << 0x10) | 0x100, &result))
3002                 return -EIO;
3003 
3004         return count;
3005 }
3006 
3007 static ssize_t sony_nc_touchpad_show(struct device *dev,
3008                 struct device_attribute *attr, char *buffer)
3009 {
3010         unsigned int result;
3011 
3012         if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))
3013                 return -EINVAL;
3014 
3015         return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01));
3016 }
3017 
3018 static int sony_nc_touchpad_setup(struct platform_device *pd,
3019                 unsigned int handle)
3020 {
3021         int ret = 0;
3022 
3023         tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
3024         if (!tp_ctl)
3025                 return -ENOMEM;
3026 
3027         tp_ctl->handle = handle;
3028 
3029         sysfs_attr_init(&tp_ctl->attr.attr);
3030         tp_ctl->attr.attr.name = "touchpad";
3031         tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
3032         tp_ctl->attr.show = sony_nc_touchpad_show;
3033         tp_ctl->attr.store = sony_nc_touchpad_store;
3034 
3035         ret = device_create_file(&pd->dev, &tp_ctl->attr);
3036         if (ret) {
3037                 kfree(tp_ctl);
3038                 tp_ctl = NULL;
3039         }
3040 
3041         return ret;
3042 }
3043 
3044 static void sony_nc_touchpad_cleanup(struct platform_device *pd)
3045 {
3046         if (tp_ctl) {
3047                 device_remove_file(&pd->dev, &tp_ctl->attr);
3048                 kfree(tp_ctl);
3049                 tp_ctl = NULL;
3050         }
3051 }
3052 
3053 static void sony_nc_backlight_ng_read_limits(int handle,
3054                 struct sony_backlight_props *props)
3055 {
3056         u64 offset;
3057         int i;
3058         int lvl_table_len = 0;
3059         u8 min = 0xff, max = 0x00;
3060         unsigned char buffer[32] = { 0 };
3061 
3062         props->handle = handle;
3063         props->offset = 0;
3064         props->maxlvl = 0xff;
3065 
3066         offset = sony_find_snc_handle(handle);
3067 
3068         /* try to read the boundaries from ACPI tables, if we fail the above
3069          * defaults should be reasonable
3070          */
3071         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
3072                         32);
3073         if (i < 0)
3074                 return;
3075 
3076         switch (handle) {
3077         case 0x012f:
3078         case 0x0137:
3079                 lvl_table_len = 9;
3080                 break;
3081         case 0x143:
3082         case 0x14b:
3083         case 0x14c:
3084                 lvl_table_len = 16;
3085                 break;
3086         }
3087 
3088         /* the buffer lists brightness levels available, brightness levels are
3089          * from position 0 to 8 in the array, other values are used by ALS
3090          * control.
3091          */
3092         for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {
3093 
3094                 dprintk("Brightness level: %d\n", buffer[i]);
3095 
3096                 if (!buffer[i])
3097                         break;
3098 
3099                 if (buffer[i] > max)
3100                         max = buffer[i];
3101                 if (buffer[i] < min)
3102                         min = buffer[i];
3103         }
3104         props->offset = min;
3105         props->maxlvl = max;
3106         dprintk("Brightness levels: min=%d max=%d\n", props->offset,
3107                         props->maxlvl);
3108 }
3109 
3110 static void sony_nc_backlight_setup(void)
3111 {
3112         int max_brightness = 0;
3113         const struct backlight_ops *ops = NULL;
3114         struct backlight_properties props;
3115 
3116         if (sony_find_snc_handle(0x12f) >= 0) {
3117                 ops = &sony_backlight_ng_ops;
3118                 sony_bl_props.cmd_base = 0x0100;
3119                 sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);
3120                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3121 
3122         } else if (sony_find_snc_handle(0x137) >= 0) {
3123                 ops = &sony_backlight_ng_ops;
3124                 sony_bl_props.cmd_base = 0x0100;
3125                 sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);
3126                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3127 
3128         } else if (sony_find_snc_handle(0x143) >= 0) {
3129                 ops = &sony_backlight_ng_ops;
3130                 sony_bl_props.cmd_base = 0x3000;
3131                 sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);
3132                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3133 
3134         } else if (sony_find_snc_handle(0x14b) >= 0) {
3135                 ops = &sony_backlight_ng_ops;
3136                 sony_bl_props.cmd_base = 0x3000;
3137                 sony_nc_backlight_ng_read_limits(0x14b, &sony_bl_props);
3138                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3139 
3140         } else if (sony_find_snc_handle(0x14c) >= 0) {
3141                 ops = &sony_backlight_ng_ops;
3142                 sony_bl_props.cmd_base = 0x3000;
3143                 sony_nc_backlight_ng_read_limits(0x14c, &sony_bl_props);
3144                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3145 
3146         } else if (acpi_has_method(sony_nc_acpi_handle, "GBRT")) {
3147                 ops = &sony_backlight_ops;
3148                 max_brightness = SONY_MAX_BRIGHTNESS - 1;
3149 
3150         } else
3151                 return;
3152 
3153         memset(&props, 0, sizeof(struct backlight_properties));
3154         props.type = BACKLIGHT_PLATFORM;
3155         props.max_brightness = max_brightness;
3156         sony_bl_props.dev = backlight_device_register("sony", NULL,
3157                                                       &sony_bl_props,
3158                                                       ops, &props);
3159 
3160         if (IS_ERR(sony_bl_props.dev)) {
3161                 pr_warn("unable to register backlight device\n");
3162                 sony_bl_props.dev = NULL;
3163         } else
3164                 sony_bl_props.dev->props.brightness =
3165                         ops->get_brightness(sony_bl_props.dev);
3166 }
3167 
3168 static void sony_nc_backlight_cleanup(void)
3169 {
3170         backlight_device_unregister(sony_bl_props.dev);
3171 }
3172 
3173 static int sony_nc_add(struct acpi_device *device)
3174 {
3175         acpi_status status;
3176         int result = 0;
3177         struct sony_nc_value *item;
3178 
3179         sony_nc_acpi_device = device;
3180         strcpy(acpi_device_class(device), "sony/hotkey");
3181 
3182         sony_nc_acpi_handle = device->handle;
3183 
3184         /* read device status */
3185         result = acpi_bus_get_status(device);
3186         /* bail IFF the above call was successful and the device is not present */
3187         if (!result && !device->status.present) {
3188                 dprintk("Device not present\n");
3189                 result = -ENODEV;
3190                 goto outwalk;
3191         }
3192 
3193         result = sony_pf_add();
3194         if (result)
3195                 goto outpresent;
3196 
3197         if (debug) {
3198                 status = acpi_walk_namespace(ACPI_TYPE_METHOD,
3199                                 sony_nc_acpi_handle, 1, sony_walk_callback,
3200                                 NULL, NULL, NULL);
3201                 if (ACPI_FAILURE(status)) {
3202                         pr_warn("unable to walk acpi resources\n");
3203                         result = -ENODEV;
3204                         goto outpresent;
3205                 }
3206         }
3207 
3208         result = sony_laptop_setup_input(device);
3209         if (result) {
3210                 pr_err("Unable to create input devices\n");
3211                 goto outplatform;
3212         }
3213 
3214         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
3215                 int arg = 1;
3216                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
3217                         dprintk("ECON Method failed\n");
3218         }
3219 
3220         if (acpi_has_method(sony_nc_acpi_handle, "SN00")) {
3221                 dprintk("Doing SNC setup\n");
3222                 /* retrieve the available handles */
3223                 result = sony_nc_handles_setup(sony_pf_device);
3224                 if (!result)
3225                         sony_nc_function_setup(device, sony_pf_device);
3226         }
3227 
3228         if (acpi_video_get_backlight_type() == acpi_backlight_vendor)
3229                 sony_nc_backlight_setup();
3230 
3231         /* create sony_pf sysfs attributes related to the SNC device */
3232         for (item = sony_nc_values; item->name; ++item) {
3233 
3234                 if (!debug && item->debug)
3235                         continue;
3236 
3237                 /* find the available acpiget as described in the DSDT */
3238                 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
3239                         if (acpi_has_method(sony_nc_acpi_handle,
3240                                                         *item->acpiget)) {
3241                                 dprintk("Found %s getter: %s\n",
3242                                                 item->name, *item->acpiget);
3243                                 item->devattr.attr.mode |= S_IRUGO;
3244                                 break;
3245                         }
3246                 }
3247 
3248                 /* find the available acpiset as described in the DSDT */
3249                 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
3250                         if (acpi_has_method(sony_nc_acpi_handle,
3251                                                         *item->acpiset)) {
3252                                 dprintk("Found %s setter: %s\n",
3253                                                 item->name, *item->acpiset);
3254                                 item->devattr.attr.mode |= S_IWUSR;
3255                                 break;
3256                         }
3257                 }
3258 
3259                 if (item->devattr.attr.mode != 0) {
3260                         result =
3261                             device_create_file(&sony_pf_device->dev,
3262                                                &item->devattr);
3263                         if (result)
3264                                 goto out_sysfs;
3265                 }
3266         }
3267 
3268         pr_info("SNC setup done.\n");
3269         return 0;
3270 
3271 out_sysfs:
3272         for (item = sony_nc_values; item->name; ++item) {
3273                 device_remove_file(&sony_pf_device->dev, &item->devattr);
3274         }
3275         sony_nc_backlight_cleanup();
3276         sony_nc_function_cleanup(sony_pf_device);
3277         sony_nc_handles_cleanup(sony_pf_device);
3278 
3279 outplatform:
3280         sony_laptop_remove_input();
3281 
3282 outpresent:
3283         sony_pf_remove();
3284 
3285 outwalk:
3286         sony_nc_rfkill_cleanup();
3287         return result;
3288 }
3289 
3290 static int sony_nc_remove(struct acpi_device *device)
3291 {
3292         struct sony_nc_value *item;
3293 
3294         sony_nc_backlight_cleanup();
3295 
3296         sony_nc_acpi_device = NULL;
3297 
3298         for (item = sony_nc_values; item->name; ++item) {
3299                 device_remove_file(&sony_pf_device->dev, &item->devattr);
3300         }
3301 
3302         sony_nc_function_cleanup(sony_pf_device);
3303         sony_nc_handles_cleanup(sony_pf_device);
3304         sony_pf_remove();
3305         sony_laptop_remove_input();
3306         dprintk(SONY_NC_DRIVER_NAME " removed.\n");
3307 
3308         return 0;
3309 }
3310 
3311 static const struct acpi_device_id sony_device_ids[] = {
3312         {SONY_NC_HID, 0},
3313         {SONY_PIC_HID, 0},
3314         {"", 0},
3315 };
3316 MODULE_DEVICE_TABLE(acpi, sony_device_ids);
3317 
3318 static const struct acpi_device_id sony_nc_device_ids[] = {
3319         {SONY_NC_HID, 0},
3320         {"", 0},
3321 };
3322 
3323 static struct acpi_driver sony_nc_driver = {
3324         .name = SONY_NC_DRIVER_NAME,
3325         .class = SONY_NC_CLASS,
3326         .ids = sony_nc_device_ids,
3327         .owner = THIS_MODULE,
3328         .ops = {
3329                 .add = sony_nc_add,
3330                 .remove = sony_nc_remove,
3331                 .notify = sony_nc_notify,
3332                 },
3333         .drv.pm = &sony_nc_pm,
3334 };
3335 
3336 /*********** SPIC (SNY6001) Device ***********/
3337 
3338 #define SONYPI_DEVICE_TYPE1     0x00000001
3339 #define SONYPI_DEVICE_TYPE2     0x00000002
3340 #define SONYPI_DEVICE_TYPE3     0x00000004
3341 
3342 #define SONYPI_TYPE1_OFFSET     0x04
3343 #define SONYPI_TYPE2_OFFSET     0x12
3344 #define SONYPI_TYPE3_OFFSET     0x12
3345 
3346 struct sony_pic_ioport {
3347         struct acpi_resource_io io1;
3348         struct acpi_resource_io io2;
3349         struct list_head        list;
3350 };
3351 
3352 struct sony_pic_irq {
3353         struct acpi_resource_irq        irq;
3354         struct list_head                list;
3355 };
3356 
3357 struct sonypi_eventtypes {
3358         u8                      data;
3359         unsigned long           mask;
3360         struct sonypi_event     *events;
3361 };
3362 
3363 struct sony_pic_dev {
3364         struct acpi_device              *acpi_dev;
3365         struct sony_pic_irq             *cur_irq;
3366         struct sony_pic_ioport          *cur_ioport;
3367         struct list_head                interrupts;
3368         struct list_head                ioports;
3369         struct mutex                    lock;
3370         struct sonypi_eventtypes        *event_types;
3371         int                             (*handle_irq)(const u8, const u8);
3372         int                             model;
3373         u16                             evport_offset;
3374         u8                              camera_power;
3375         u8                              bluetooth_power;
3376         u8                              wwan_power;
3377 };
3378 
3379 static struct sony_pic_dev spic_dev = {
3380         .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
3381         .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
3382 };
3383 
3384 static int spic_drv_registered;
3385 
3386 /* Event masks */
3387 #define SONYPI_JOGGER_MASK                      0x00000001
3388 #define SONYPI_CAPTURE_MASK                     0x00000002
3389 #define SONYPI_FNKEY_MASK                       0x00000004
3390 #define SONYPI_BLUETOOTH_MASK                   0x00000008
3391 #define SONYPI_PKEY_MASK                        0x00000010
3392 #define SONYPI_BACK_MASK                        0x00000020
3393 #define SONYPI_HELP_MASK                        0x00000040
3394 #define SONYPI_LID_MASK                         0x00000080
3395 #define SONYPI_ZOOM_MASK                        0x00000100
3396 #define SONYPI_THUMBPHRASE_MASK                 0x00000200
3397 #define SONYPI_MEYE_MASK                        0x00000400
3398 #define SONYPI_MEMORYSTICK_MASK                 0x00000800
3399 #define SONYPI_BATTERY_MASK                     0x00001000
3400 #define SONYPI_WIRELESS_MASK                    0x00002000
3401 
3402 struct sonypi_event {
3403         u8      data;
3404         u8      event;
3405 };
3406 
3407 /* The set of possible button release events */
3408 static struct sonypi_event sonypi_releaseev[] = {
3409         { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
3410         { 0, 0 }
3411 };
3412 
3413 /* The set of possible jogger events  */
3414 static struct sonypi_event sonypi_joggerev[] = {
3415         { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
3416         { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
3417         { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
3418         { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
3419         { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
3420         { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
3421         { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
3422         { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
3423         { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
3424         { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
3425         { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
3426         { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
3427         { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
3428         { 0, 0 }
3429 };
3430 
3431 /* The set of possible capture button events */
3432 static struct sonypi_event sonypi_captureev[] = {
3433         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
3434         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
3435         { 0x40, SONYPI_EVENT_CAPTURE_PRESSED },
3436         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
3437         { 0, 0 }
3438 };
3439 
3440 /* The set of possible fnkeys events */
3441 static struct sonypi_event sonypi_fnkeyev[] = {
3442         { 0x10, SONYPI_EVENT_FNKEY_ESC },
3443         { 0x11, SONYPI_EVENT_FNKEY_F1 },
3444         { 0x12, SONYPI_EVENT_FNKEY_F2 },
3445         { 0x13, SONYPI_EVENT_FNKEY_F3 },
3446         { 0x14, SONYPI_EVENT_FNKEY_F4 },
3447         { 0x15, SONYPI_EVENT_FNKEY_F5 },
3448         { 0x16, SONYPI_EVENT_FNKEY_F6 },
3449         { 0x17, SONYPI_EVENT_FNKEY_F7 },
3450         { 0x18, SONYPI_EVENT_FNKEY_F8 },
3451         { 0x19, SONYPI_EVENT_FNKEY_F9 },
3452         { 0x1a, SONYPI_EVENT_FNKEY_F10 },
3453         { 0x1b, SONYPI_EVENT_FNKEY_F11 },
3454         { 0x1c, SONYPI_EVENT_FNKEY_F12 },
3455         { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
3456         { 0x21, SONYPI_EVENT_FNKEY_1 },
3457         { 0x22, SONYPI_EVENT_FNKEY_2 },
3458         { 0x31, SONYPI_EVENT_FNKEY_D },
3459         { 0x32, SONYPI_EVENT_FNKEY_E },
3460         { 0x33, SONYPI_EVENT_FNKEY_F },
3461         { 0x34, SONYPI_EVENT_FNKEY_S },
3462         { 0x35, SONYPI_EVENT_FNKEY_B },
3463         { 0x36, SONYPI_EVENT_FNKEY_ONLY },
3464         { 0, 0 }
3465 };
3466 
3467 /* The set of possible program key events */
3468 static struct sonypi_event sonypi_pkeyev[] = {
3469         { 0x01, SONYPI_EVENT_PKEY_P1 },
3470         { 0x02, SONYPI_EVENT_PKEY_P2 },
3471         { 0x04, SONYPI_EVENT_PKEY_P3 },
3472         { 0x20, SONYPI_EVENT_PKEY_P1 },
3473         { 0, 0 }
3474 };
3475 
3476 /* The set of possible bluetooth events */
3477 static struct sonypi_event sonypi_blueev[] = {
3478         { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
3479         { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
3480         { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
3481         { 0, 0 }
3482 };
3483 
3484 /* The set of possible wireless events */
3485 static struct sonypi_event sonypi_wlessev[] = {
3486         { 0x59, SONYPI_EVENT_IGNORE },
3487         { 0x5a, SONYPI_EVENT_IGNORE },
3488         { 0, 0 }
3489 };
3490 
3491 /* The set of possible back button events */
3492 static struct sonypi_event sonypi_backev[] = {
3493         { 0x20, SONYPI_EVENT_BACK_PRESSED },
3494         { 0, 0 }
3495 };
3496 
3497 /* The set of possible help button events */
3498 static struct sonypi_event sonypi_helpev[] = {
3499         { 0x3b, SONYPI_EVENT_HELP_PRESSED },
3500         { 0, 0 }
3501 };
3502 
3503 
3504 /* The set of possible lid events */
3505 static struct sonypi_event sonypi_lidev[] = {
3506         { 0x51, SONYPI_EVENT_LID_CLOSED },
3507         { 0x50, SONYPI_EVENT_LID_OPENED },
3508         { 0, 0 }
3509 };
3510 
3511 /* The set of possible zoom events */
3512 static struct sonypi_event sonypi_zoomev[] = {
3513         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
3514         { 0x10, SONYPI_EVENT_ZOOM_IN_PRESSED },
3515         { 0x20, SONYPI_EVENT_ZOOM_OUT_PRESSED },
3516         { 0x04, SONYPI_EVENT_ZOOM_PRESSED },
3517         { 0, 0 }
3518 };
3519 
3520 /* The set of possible thumbphrase events */
3521 static struct sonypi_event sonypi_thumbphraseev[] = {
3522         { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
3523         { 0, 0 }
3524 };
3525 
3526 /* The set of possible motioneye camera events */
3527 static struct sonypi_event sonypi_meyeev[] = {
3528         { 0x00, SONYPI_EVENT_MEYE_FACE },
3529         { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
3530         { 0, 0 }
3531 };
3532 
3533 /* The set of possible memorystick events */
3534 static struct sonypi_event sonypi_memorystickev[] = {
3535         { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
3536         { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
3537         { 0, 0 }
3538 };
3539 
3540 /* The set of possible battery events */
3541 static struct sonypi_event sonypi_batteryev[] = {
3542         { 0x20, SONYPI_EVENT_BATTERY_INSERT },
3543         { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
3544         { 0, 0 }
3545 };
3546 
3547 /* The set of possible volume events */
3548 static struct sonypi_event sonypi_volumeev[] = {
3549         { 0x01, SONYPI_EVENT_VOLUME_INC_PRESSED },
3550         { 0x02, SONYPI_EVENT_VOLUME_DEC_PRESSED },
3551         { 0, 0 }
3552 };
3553 
3554 /* The set of possible brightness events */
3555 static struct sonypi_event sonypi_brightnessev[] = {
3556         { 0x80, SONYPI_EVENT_BRIGHTNESS_PRESSED },
3557         { 0, 0 }
3558 };
3559 
3560 static struct sonypi_eventtypes type1_events[] = {
3561         { 0, 0xffffffff, sonypi_releaseev },
3562         { 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
3563         { 0x30, SONYPI_LID_MASK, sonypi_lidev },
3564         { 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
3565         { 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
3566         { 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3567         { 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3568         { 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
3569         { 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3570         { 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
3571         { 0 },
3572 };
3573 static struct sonypi_eventtypes type2_events[] = {
3574         { 0, 0xffffffff, sonypi_releaseev },
3575         { 0x38, SONYPI_LID_MASK, sonypi_lidev },
3576         { 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
3577         { 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
3578         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3579         { 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3580         { 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
3581         { 0x11, SONYPI_BACK_MASK, sonypi_backev },
3582         { 0x21, SONYPI_HELP_MASK, sonypi_helpev },
3583         { 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
3584         { 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
3585         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3586         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3587         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3588         { 0 },
3589 };
3590 static struct sonypi_eventtypes type3_events[] = {
3591         { 0, 0xffffffff, sonypi_releaseev },
3592         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3593         { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
3594         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3595         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3596         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3597         { 0x05, SONYPI_PKEY_MASK, sonypi_pkeyev },
3598         { 0x05, SONYPI_ZOOM_MASK, sonypi_zoomev },
3599         { 0x05, SONYPI_CAPTURE_MASK, sonypi_captureev },
3600         { 0x05, SONYPI_PKEY_MASK, sonypi_volumeev },
3601         { 0x05, SONYPI_PKEY_MASK, sonypi_brightnessev },
3602         { 0 },
3603 };
3604 
3605 /* low level spic calls */
3606 #define ITERATIONS_LONG         10000
3607 #define ITERATIONS_SHORT        10
3608 #define wait_on_command(command, iterations) {                          \
3609         unsigned int n = iterations;                                    \
3610         while (--n && (command))                                        \
3611                 udelay(1);                                              \
3612         if (!n)                                                         \
3613                 dprintk("command failed at %s : %s (line %d)\n",        \
3614                                 __FILE__, __func__, __LINE__);  \
3615 }
3616 
3617 static u8 sony_pic_call1(u8 dev)
3618 {
3619         u8 v1, v2;
3620 
3621         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3622                         ITERATIONS_LONG);
3623         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3624         v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
3625         v2 = inb_p(spic_dev.cur_ioport->io1.minimum);
3626         dprintk("sony_pic_call1(0x%.2x): 0x%.4x\n", dev, (v2 << 8) | v1);
3627         return v2;
3628 }
3629 
3630 static u8 sony_pic_call2(u8 dev, u8 fn)
3631 {
3632         u8 v1;
3633 
3634         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3635                         ITERATIONS_LONG);
3636         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3637         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3638                         ITERATIONS_LONG);
3639         outb(fn, spic_dev.cur_ioport->io1.minimum);
3640         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3641         dprintk("sony_pic_call2(0x%.2x - 0x%.2x): 0x%.4x\n", dev, fn, v1);
3642         return v1;
3643 }
3644 
3645 static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
3646 {
3647         u8 v1;
3648 
3649         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3650         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3651         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3652         outb(fn, spic_dev.cur_ioport->io1.minimum);
3653         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3654         outb(v, spic_dev.cur_ioport->io1.minimum);
3655         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3656         dprintk("sony_pic_call3(0x%.2x - 0x%.2x - 0x%.2x): 0x%.4x\n",
3657                         dev, fn, v, v1);
3658         return v1;
3659 }
3660 
3661 /*
3662  * minidrivers for SPIC models
3663  */
3664 static int type3_handle_irq(const u8 data_mask, const u8 ev)
3665 {
3666         /*
3667          * 0x31 could mean we have to take some extra action and wait for
3668          * the next irq for some Type3 models, it will generate a new
3669          * irq and we can read new data from the device:
3670          *  - 0x5c and 0x5f requires 0xA0
3671          *  - 0x61 requires 0xB3
3672          */
3673         if (data_mask == 0x31) {
3674                 if (ev == 0x5c || ev == 0x5f)
3675                         sony_pic_call1(0xA0);
3676                 else if (ev == 0x61)
3677                         sony_pic_call1(0xB3);
3678                 return 0;
3679         }
3680         return 1;
3681 }
3682 
3683 static void sony_pic_detect_device_type(struct sony_pic_dev *dev)
3684 {
3685         struct pci_dev *pcidev;
3686 
3687         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3688                         PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
3689         if (pcidev) {
3690                 dev->model = SONYPI_DEVICE_TYPE1;
3691                 dev->evport_offset = SONYPI_TYPE1_OFFSET;
3692                 dev->event_types = type1_events;
3693                 goto out;
3694         }
3695 
3696         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3697                         PCI_DEVICE_ID_INTEL_ICH6_1, NULL);
3698         if (pcidev) {
3699                 dev->model = SONYPI_DEVICE_TYPE2;
3700                 dev->evport_offset = SONYPI_TYPE2_OFFSET;
3701                 dev->event_types = type2_events;
3702                 goto out;
3703         }
3704 
3705         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3706                         PCI_DEVICE_ID_INTEL_ICH7_1, NULL);
3707         if (pcidev) {
3708                 dev->model = SONYPI_DEVICE_TYPE3;
3709                 dev->handle_irq = type3_handle_irq;
3710                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3711                 dev->event_types = type3_events;
3712                 goto out;
3713         }
3714 
3715         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3716                         PCI_DEVICE_ID_INTEL_ICH8_4, NULL);
3717         if (pcidev) {
3718                 dev->model = SONYPI_DEVICE_TYPE3;
3719                 dev->handle_irq = type3_handle_irq;
3720                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3721                 dev->event_types = type3_events;
3722                 goto out;
3723         }
3724 
3725         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3726                         PCI_DEVICE_ID_INTEL_ICH9_1, NULL);
3727         if (pcidev) {
3728                 dev->model = SONYPI_DEVICE_TYPE3;
3729                 dev->handle_irq = type3_handle_irq;
3730                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3731                 dev->event_types = type3_events;
3732                 goto out;
3733         }
3734 
3735         /* default */
3736         dev->model = SONYPI_DEVICE_TYPE2;
3737         dev->evport_offset = SONYPI_TYPE2_OFFSET;
3738         dev->event_types = type2_events;
3739 
3740 out:
3741         pci_dev_put(pcidev);
3742 
3743         pr_info("detected Type%d model\n",
3744                 dev->model == SONYPI_DEVICE_TYPE1 ? 1 :
3745                 dev->model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
3746 }
3747 
3748 /* camera tests and poweron/poweroff */
3749 #define SONYPI_CAMERA_PICTURE           5
3750 #define SONYPI_CAMERA_CONTROL           0x10
3751 
3752 #define SONYPI_CAMERA_BRIGHTNESS                0
3753 #define SONYPI_CAMERA_CONTRAST                  1
3754 #define SONYPI_CAMERA_HUE                       2
3755 #define SONYPI_CAMERA_COLOR                     3
3756 #define SONYPI_CAMERA_SHARPNESS                 4
3757 
3758 #define SONYPI_CAMERA_EXPOSURE_MASK             0xC
3759 #define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
3760 #define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
3761 #define SONYPI_CAMERA_MUTE_MASK                 0x40
3762 
3763 /* the rest don't need a loop until not 0xff */
3764 #define SONYPI_CAMERA_AGC                       6
3765 #define SONYPI_CAMERA_AGC_MASK                  0x30
3766 #define SONYPI_CAMERA_SHUTTER_MASK              0x7
3767 
3768 #define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
3769 #define SONYPI_CAMERA_CONTROL                   0x10
3770 
3771 #define SONYPI_CAMERA_STATUS                    7
3772 #define SONYPI_CAMERA_STATUS_READY              0x2
3773 #define SONYPI_CAMERA_STATUS_POSITION           0x4
3774 
3775 #define SONYPI_DIRECTION_BACKWARDS              0x4
3776 
3777 #define SONYPI_CAMERA_REVISION                  8
3778 #define SONYPI_CAMERA_ROMVERSION                9
3779 
3780 static int __sony_pic_camera_ready(void)
3781 {
3782         u8 v;
3783 
3784         v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
3785         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
3786 }
3787 
3788 static int __sony_pic_camera_off(void)
3789 {
3790         if (!camera) {
3791                 pr_warn("camera control not enabled\n");
3792                 return -ENODEV;
3793         }
3794 
3795         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
3796                                 SONYPI_CAMERA_MUTE_MASK),
3797                         ITERATIONS_SHORT);
3798 
3799         if (spic_dev.camera_power) {
3800                 sony_pic_call2(0x91, 0);
3801                 spic_dev.camera_power = 0;
3802         }
3803         return 0;
3804 }
3805 
3806 static int __sony_pic_camera_on(void)
3807 {
3808         int i, j, x;
3809 
3810         if (!camera) {
3811                 pr_warn("camera control not enabled\n");
3812                 return -ENODEV;
3813         }
3814 
3815         if (spic_dev.camera_power)
3816                 return 0;
3817 
3818         for (j = 5; j > 0; j--) {
3819 
3820                 for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
3821                         msleep(10);
3822                 sony_pic_call1(0x93);
3823 
3824                 for (i = 400; i > 0; i--) {
3825                         if (__sony_pic_camera_ready())
3826                                 break;
3827                         msleep(10);
3828                 }
3829                 if (i)
3830                         break;
3831         }
3832 
3833         if (j == 0) {
3834                 pr_warn("failed to power on camera\n");
3835                 return -ENODEV;
3836         }
3837 
3838         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
3839                                 0x5a),
3840                         ITERATIONS_SHORT);
3841 
3842         spic_dev.camera_power = 1;
3843         return 0;
3844 }
3845 
3846 /* External camera command (exported to the motion eye v4l driver) */
3847 int sony_pic_camera_command(int command, u8 value)
3848 {
3849         if (!camera)
3850                 return -EIO;
3851 
3852         mutex_lock(&spic_dev.lock);
3853 
3854         switch (command) {
3855         case SONY_PIC_COMMAND_SETCAMERA:
3856                 if (value)
3857                         __sony_pic_camera_on();
3858                 else
3859                         __sony_pic_camera_off();
3860                 break;
3861         case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
3862                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
3863                                 ITERATIONS_SHORT);
3864                 break;
3865         case SONY_PIC_COMMAND_SETCAMERACONTRAST:
3866                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
3867                                 ITERATIONS_SHORT);
3868                 break;
3869         case SONY_PIC_COMMAND_SETCAMERAHUE:
3870                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
3871                                 ITERATIONS_SHORT);
3872                 break;
3873         case SONY_PIC_COMMAND_SETCAMERACOLOR:
3874                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
3875                                 ITERATIONS_SHORT);
3876                 break;
3877         case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
3878                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
3879                                 ITERATIONS_SHORT);
3880                 break;
3881         case SONY_PIC_COMMAND_SETCAMERAPICTURE:
3882                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
3883                                 ITERATIONS_SHORT);
3884                 break;
3885         case SONY_PIC_COMMAND_SETCAMERAAGC:
3886                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
3887                                 ITERATIONS_SHORT);
3888                 break;
3889         default:
3890                 pr_err("sony_pic_camera_command invalid: %d\n", command);
3891                 break;
3892         }
3893         mutex_unlock(&spic_dev.lock);
3894         return 0;
3895 }
3896 EXPORT_SYMBOL(sony_pic_camera_command);
3897 
3898 /* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
3899 static void __sony_pic_set_wwanpower(u8 state)
3900 {
3901         state = !!state;
3902         if (spic_dev.wwan_power == state)
3903                 return;
3904         sony_pic_call2(0xB0, state);
3905         sony_pic_call1(0x82);
3906         spic_dev.wwan_power = state;
3907 }
3908 
3909 static ssize_t sony_pic_wwanpower_store(struct device *dev,
3910                 struct device_attribute *attr,
3911                 const char *buffer, size_t count)
3912 {
3913         unsigned long value;
3914         if (count > 31)
3915                 return -EINVAL;
3916 
3917         if (kstrtoul(buffer, 10, &value))
3918                 return -EINVAL;
3919 
3920         mutex_lock(&spic_dev.lock);
3921         __sony_pic_set_wwanpower(value);
3922         mutex_unlock(&spic_dev.lock);
3923 
3924         return count;
3925 }
3926 
3927 static ssize_t sony_pic_wwanpower_show(struct device *dev,
3928                 struct device_attribute *attr, char *buffer)
3929 {
3930         ssize_t count;
3931         mutex_lock(&spic_dev.lock);
3932         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
3933         mutex_unlock(&spic_dev.lock);
3934         return count;
3935 }
3936 
3937 /* bluetooth subsystem power state */
3938 static void __sony_pic_set_bluetoothpower(u8 state)
3939 {
3940         state = !!state;
3941         if (spic_dev.bluetooth_power == state)
3942                 return;
3943         sony_pic_call2(0x96, state);
3944         sony_pic_call1(0x82);
3945         spic_dev.bluetooth_power = state;
3946 }
3947 
3948 static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
3949                 struct device_attribute *attr,
3950                 const char *buffer, size_t count)
3951 {
3952         unsigned long value;
3953         if (count > 31)
3954                 return -EINVAL;
3955 
3956         if (kstrtoul(buffer, 10, &value))
3957                 return -EINVAL;
3958 
3959         mutex_lock(&spic_dev.lock);
3960         __sony_pic_set_bluetoothpower(value);
3961         mutex_unlock(&spic_dev.lock);
3962 
3963         return count;
3964 }
3965 
3966 static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
3967                 struct device_attribute *attr, char *buffer)
3968 {
3969         ssize_t count = 0;
3970         mutex_lock(&spic_dev.lock);
3971         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
3972         mutex_unlock(&spic_dev.lock);
3973         return count;
3974 }
3975 
3976 /* fan speed */
3977 /* FAN0 information (reverse engineered from ACPI tables) */
3978 #define SONY_PIC_FAN0_STATUS    0x93
3979 static int sony_pic_set_fanspeed(unsigned long value)
3980 {
3981         return ec_write(SONY_PIC_FAN0_STATUS, value);
3982 }
3983 
3984 static int sony_pic_get_fanspeed(u8 *value)
3985 {
3986         return ec_read(SONY_PIC_FAN0_STATUS, value);
3987 }
3988 
3989 static ssize_t sony_pic_fanspeed_store(struct device *dev,
3990                 struct device_attribute *attr,
3991                 const char *buffer, size_t count)
3992 {
3993         unsigned long value;
3994         if (count > 31)
3995                 return -EINVAL;
3996 
3997         if (kstrtoul(buffer, 10, &value))
3998                 return -EINVAL;
3999 
4000         if (sony_pic_set_fanspeed(value))
4001                 return -EIO;
4002 
4003         return count;
4004 }
4005 
4006 static ssize_t sony_pic_fanspeed_show(struct device *dev,
4007                 struct device_attribute *attr, char *buffer)
4008 {
4009         u8 value = 0;
4010         if (sony_pic_get_fanspeed(&value))
4011                 return -EIO;
4012 
4013         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
4014 }
4015 
4016 #define SPIC_ATTR(_name, _mode)                                 \
4017 struct device_attribute spic_attr_##_name = __ATTR(_name,       \
4018                 _mode, sony_pic_## _name ##_show,               \
4019                 sony_pic_## _name ##_store)
4020 
4021 static SPIC_ATTR(bluetoothpower, 0644);
4022 static SPIC_ATTR(wwanpower, 0644);
4023 static SPIC_ATTR(fanspeed, 0644);
4024 
4025 static struct attribute *spic_attributes[] = {
4026         &spic_attr_bluetoothpower.attr,
4027         &spic_attr_wwanpower.attr,
4028         &spic_attr_fanspeed.attr,
4029         NULL
4030 };
4031 
4032 static struct attribute_group spic_attribute_group = {
4033         .attrs = spic_attributes
4034 };
4035 
4036 /******** SONYPI compatibility **********/
4037 #ifdef CONFIG_SONYPI_COMPAT
4038 
4039 /* battery / brightness / temperature  addresses */
4040 #define SONYPI_BAT_FLAGS        0x81
4041 #define SONYPI_LCD_LIGHT        0x96
4042 #define SONYPI_BAT1_PCTRM       0xa0
4043 #define SONYPI_BAT1_LEFT        0xa2
4044 #define SONYPI_BAT1_MAXRT       0xa4
4045 #define SONYPI_BAT2_PCTRM       0xa8
4046 #define SONYPI_BAT2_LEFT        0xaa
4047 #define SONYPI_BAT2_MAXRT       0xac
4048 #define SONYPI_BAT1_MAXTK       0xb0
4049 #define SONYPI_BAT1_FULL        0xb2
4050 #define SONYPI_BAT2_MAXTK       0xb8
4051 #define SONYPI_BAT2_FULL        0xba
4052 #define SONYPI_TEMP_STATUS      0xC1
4053 
4054 struct sonypi_compat_s {
4055         struct fasync_struct    *fifo_async;
4056         struct kfifo            fifo;
4057         spinlock_t              fifo_lock;
4058         wait_queue_head_t       fifo_proc_list;
4059         atomic_t                open_count;
4060 };
4061 static struct sonypi_compat_s sonypi_compat = {
4062         .open_count = ATOMIC_INIT(0),
4063 };
4064 
4065 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
4066 {
4067         return fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
4068 }
4069 
4070 static int sonypi_misc_release(struct inode *inode, struct file *file)
4071 {
4072         atomic_dec(&sonypi_compat.open_count);
4073         return 0;
4074 }
4075 
4076 static int sonypi_misc_open(struct inode *inode, struct file *file)
4077 {
4078         /* Flush input queue on first open */
4079         unsigned long flags;
4080 
4081         spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
4082 
4083         if (atomic_inc_return(&sonypi_compat.open_count) == 1)
4084                 kfifo_reset(&sonypi_compat.fifo);
4085 
4086         spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
4087 
4088         return 0;
4089 }
4090 
4091 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
4092                                 size_t count, loff_t *pos)
4093 {
4094         ssize_t ret;
4095         unsigned char c;
4096 
4097         if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
4098             (file->f_flags & O_NONBLOCK))
4099                 return -EAGAIN;
4100 
4101         ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
4102                                        kfifo_len(&sonypi_compat.fifo) != 0);
4103         if (ret)
4104                 return ret;
4105 
4106         while (ret < count &&
4107                (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
4108                           &sonypi_compat.fifo_lock) == sizeof(c))) {
4109                 if (put_user(c, buf++))
4110                         return -EFAULT;
4111                 ret++;
4112         }
4113 
4114         if (ret > 0) {
4115                 struct inode *inode = file_inode(file);
4116                 inode->i_atime = current_fs_time(inode->i_sb);
4117         }
4118 
4119         return ret;
4120 }
4121 
4122 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
4123 {
4124         poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
4125         if (kfifo_len(&sonypi_compat.fifo))
4126                 return POLLIN | POLLRDNORM;
4127         return 0;
4128 }
4129 
4130 static int ec_read16(u8 addr, u16 *value)
4131 {
4132         u8 val_lb, val_hb;
4133         if (ec_read(addr, &val_lb))
4134                 return -1;
4135         if (ec_read(addr + 1, &val_hb))
4136                 return -1;
4137         *value = val_lb | (val_hb << 8);
4138         return 0;
4139 }
4140 
4141 static long sonypi_misc_ioctl(struct file *fp, unsigned int cmd,
4142                                                         unsigned long arg)
4143 {
4144         int ret = 0;
4145         void __user *argp = (void __user *)arg;
4146         u8 val8;
4147         u16 val16;
4148         int value;
4149 
4150         mutex_lock(&spic_dev.lock);
4151         switch (cmd) {
4152         case SONYPI_IOCGBRT:
4153                 if (sony_bl_props.dev == NULL) {
4154                         ret = -EIO;
4155                         break;
4156                 }
4157                 if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL,
4158                                         &value)) {
4159                         ret = -EIO;
4160                         break;
4161                 }
4162                 val8 = ((value & 0xff) - 1) << 5;
4163                 if (copy_to_user(argp, &val8, sizeof(val8)))
4164                                 ret = -EFAULT;
4165                 break;
4166         case SONYPI_IOCSBRT:
4167                 if (sony_bl_props.dev == NULL) {
4168                         ret = -EIO;
4169                         break;
4170                 }
4171                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4172                         ret = -EFAULT;
4173                         break;
4174                 }
4175                 value = (val8 >> 5) + 1;
4176                 if (sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &value,
4177                                         NULL)) {
4178                         ret = -EIO;
4179                         break;
4180                 }
4181                 /* sync the backlight device status */
4182                 sony_bl_props.dev->props.brightness =
4183                     sony_backlight_get_brightness(sony_bl_props.dev);
4184                 break;
4185         case SONYPI_IOCGBAT1CAP:
4186                 if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
4187                         ret = -EIO;
4188                         break;
4189                 }
4190                 if (copy_to_user(argp, &val16, sizeof(val16)))
4191                         ret = -EFAULT;
4192                 break;
4193         case SONYPI_IOCGBAT1REM:
4194                 if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
4195                         ret = -EIO;
4196                         break;
4197                 }
4198                 if (copy_to_user(argp, &val16, sizeof(val16)))
4199                         ret = -EFAULT;
4200                 break;
4201         case SONYPI_IOCGBAT2CAP:
4202                 if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
4203                         ret = -EIO;
4204                         break;
4205                 }
4206                 if (copy_to_user(argp, &val16, sizeof(val16)))
4207                         ret = -EFAULT;
4208                 break;
4209         case SONYPI_IOCGBAT2REM:
4210                 if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
4211                         ret = -EIO;
4212                         break;
4213                 }
4214                 if (copy_to_user(argp, &val16, sizeof(val16)))
4215                         ret = -EFAULT;
4216                 break;
4217         case SONYPI_IOCGBATFLAGS:
4218                 if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
4219                         ret = -EIO;
4220                         break;
4221                 }
4222                 val8 &= 0x07;
4223                 if (copy_to_user(argp, &val8, sizeof(val8)))
4224                         ret = -EFAULT;
4225                 break;
4226         case SONYPI_IOCGBLUE:
4227                 val8 = spic_dev.bluetooth_power;
4228                 if (copy_to_user(argp, &val8, sizeof(val8)))
4229                         ret = -EFAULT;
4230                 break;
4231         case SONYPI_IOCSBLUE:
4232                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4233                         ret = -EFAULT;
4234                         break;
4235                 }
4236                 __sony_pic_set_bluetoothpower(val8);
4237                 break;
4238         /* FAN Controls */
4239         case SONYPI_IOCGFAN:
4240                 if (sony_pic_get_fanspeed(&val8)) {
4241                         ret = -EIO;
4242                         break;
4243                 }
4244                 if (copy_to_user(argp, &val8, sizeof(val8)))
4245                         ret = -EFAULT;
4246                 break;
4247         case SONYPI_IOCSFAN:
4248                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4249                         ret = -EFAULT;
4250                         break;
4251                 }
4252                 if (sony_pic_set_fanspeed(val8))
4253                         ret = -EIO;
4254                 break;
4255         /* GET Temperature (useful under APM) */
4256         case SONYPI_IOCGTEMP:
4257                 if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
4258                         ret = -EIO;
4259                         break;
4260                 }
4261                 if (copy_to_user(argp, &val8, sizeof(val8)))
4262                         ret = -EFAULT;
4263                 break;
4264         default:
4265                 ret = -EINVAL;
4266         }
4267         mutex_unlock(&spic_dev.lock);
4268         return ret;
4269 }
4270 
4271 static const struct file_operations sonypi_misc_fops = {
4272         .owner          = THIS_MODULE,
4273         .read           = sonypi_misc_read,
4274         .poll           = sonypi_misc_poll,
4275         .open           = sonypi_misc_open,
4276         .release        = sonypi_misc_release,
4277         .fasync         = sonypi_misc_fasync,
4278         .unlocked_ioctl = sonypi_misc_ioctl,
4279         .llseek         = noop_llseek,
4280 };
4281 
4282 static struct miscdevice sonypi_misc_device = {
4283         .minor          = MISC_DYNAMIC_MINOR,
4284         .name           = "sonypi",
4285         .fops           = &sonypi_misc_fops,
4286 };
4287 
4288 static void sonypi_compat_report_event(u8 event)
4289 {
4290         kfifo_in_locked(&sonypi_compat.fifo, (unsigned char *)&event,
4291                         sizeof(event), &sonypi_compat.fifo_lock);
4292         kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
4293         wake_up_interruptible(&sonypi_compat.fifo_proc_list);
4294 }
4295 
4296 static int sonypi_compat_init(void)
4297 {
4298         int error;
4299 
4300         spin_lock_init(&sonypi_compat.fifo_lock);
4301         error =
4302          kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
4303         if (error) {
4304                 pr_err("kfifo_alloc failed\n");
4305                 return error;
4306         }
4307 
4308         init_waitqueue_head(&sonypi_compat.fifo_proc_list);
4309 
4310         if (minor != -1)
4311                 sonypi_misc_device.minor = minor;
4312         error = misc_register(&sonypi_misc_device);
4313         if (error) {
4314                 pr_err("misc_register failed\n");
4315                 goto err_free_kfifo;
4316         }
4317         if (minor == -1)
4318                 pr_info("device allocated minor is %d\n",
4319                         sonypi_misc_device.minor);
4320 
4321         return 0;
4322 
4323 err_free_kfifo:
4324         kfifo_free(&sonypi_compat.fifo);
4325         return error;
4326 }
4327 
4328 static void sonypi_compat_exit(void)
4329 {
4330         misc_deregister(&sonypi_misc_device);
4331         kfifo_free(&sonypi_compat.fifo);
4332 }
4333 #else
4334 static int sonypi_compat_init(void) { return 0; }
4335 static void sonypi_compat_exit(void) { }
4336 static void sonypi_compat_report_event(u8 event) { }
4337 #endif /* CONFIG_SONYPI_COMPAT */
4338 
4339 /*
4340  * ACPI callbacks
4341  */
4342 static acpi_status
4343 sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
4344 {
4345         u32 i;
4346         struct sony_pic_dev *dev = (struct sony_pic_dev *)context;
4347 
4348         switch (resource->type) {
4349         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
4350                 {
4351                         /* start IO enumeration */
4352                         struct sony_pic_ioport *ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
4353                         if (!ioport)
4354                                 return AE_ERROR;
4355 
4356                         list_add(&ioport->list, &dev->ioports);
4357                         return AE_OK;
4358                 }
4359 
4360         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
4361                 /* end IO enumeration */
4362                 return AE_OK;
4363 
4364         case ACPI_RESOURCE_TYPE_IRQ:
4365                 {
4366                         struct acpi_resource_irq *p = &resource->data.irq;
4367                         struct sony_pic_irq *interrupt = NULL;
4368                         if (!p || !p->interrupt_count) {
4369                                 /*
4370                                  * IRQ descriptors may have no IRQ# bits set,
4371                                  * particularly those those w/ _STA disabled
4372                                  */
4373                                 dprintk("Blank IRQ resource\n");
4374                                 return AE_OK;
4375                         }
4376                         for (i = 0; i < p->interrupt_count; i++) {
4377                                 if (!p->interrupts[i]) {
4378                                         pr_warn("Invalid IRQ %d\n",
4379                                                 p->interrupts[i]);
4380                                         continue;
4381                                 }
4382                                 interrupt = kzalloc(sizeof(*interrupt),
4383                                                 GFP_KERNEL);
4384                                 if (!interrupt)
4385                                         return AE_ERROR;
4386 
4387                                 list_add(&interrupt->list, &dev->interrupts);
4388                                 interrupt->irq.triggering = p->triggering;
4389                                 interrupt->irq.polarity = p->polarity;
4390                                 interrupt->irq.sharable = p->sharable;
4391                                 interrupt->irq.interrupt_count = 1;
4392                                 interrupt->irq.interrupts[0] = p->interrupts[i];
4393                         }
4394                         return AE_OK;
4395                 }
4396         case ACPI_RESOURCE_TYPE_IO:
4397                 {
4398                         struct acpi_resource_io *io = &resource->data.io;
4399                         struct sony_pic_ioport *ioport =
4400                                 list_first_entry(&dev->ioports, struct sony_pic_ioport, list);
4401                         if (!io) {
4402                                 dprintk("Blank IO resource\n");
4403                                 return AE_OK;
4404                         }
4405 
4406                         if (!ioport->io1.minimum) {
4407                                 memcpy(&ioport->io1, io, sizeof(*io));
4408                                 dprintk("IO1 at 0x%.4x (0x%.2x)\n", ioport->io1.minimum,
4409                                                 ioport->io1.address_length);
4410                         }
4411                         else if (!ioport->io2.minimum) {
4412                                 memcpy(&ioport->io2, io, sizeof(*io));
4413                                 dprintk("IO2 at 0x%.4x (0x%.2x)\n", ioport->io2.minimum,
4414                                                 ioport->io2.address_length);
4415                         }
4416                         else {
4417                                 pr_err("Unknown SPIC Type, more than 2 IO Ports\n");
4418                                 return AE_ERROR;
4419                         }
4420                         return AE_OK;
4421                 }
4422         default:
4423                 dprintk("Resource %d isn't an IRQ nor an IO port\n",
4424                         resource->type);
4425 
4426         case ACPI_RESOURCE_TYPE_END_TAG:
4427                 return AE_OK;
4428         }
4429         return AE_CTRL_TERMINATE;
4430 }
4431 
4432 static int sony_pic_possible_resources(struct acpi_device *device)
4433 {
4434         int result = 0;
4435         acpi_status status = AE_OK;
4436 
4437         if (!device)
4438                 return -EINVAL;
4439 
4440         /* get device status */
4441         /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
4442         dprintk("Evaluating _STA\n");
4443         result = acpi_bus_get_status(device);
4444         if (result) {
4445                 pr_warn("Unable to read status\n");
4446                 goto end;
4447         }
4448 
4449         if (!device->status.enabled)
4450                 dprintk("Device disabled\n");
4451         else
4452                 dprintk("Device enabled\n");
4453 
4454         /*
4455          * Query and parse 'method'
4456          */
4457         dprintk("Evaluating %s\n", METHOD_NAME__PRS);
4458         status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
4459                         sony_pic_read_possible_resource, &spic_dev);
4460         if (ACPI_FAILURE(status)) {
4461                 pr_warn("Failure evaluating %s\n", METHOD_NAME__PRS);
4462                 result = -ENODEV;
4463         }
4464 end:
4465         return result;
4466 }
4467 
4468 /*
4469  *  Disable the spic device by calling its _DIS method
4470  */
4471 static int sony_pic_disable(struct acpi_device *device)
4472 {
4473         acpi_status ret = acpi_evaluate_object(device->handle, "_DIS", NULL,
4474                                                NULL);
4475 
4476         if (ACPI_FAILURE(ret) && ret != AE_NOT_FOUND)
4477                 return -ENXIO;
4478 
4479         dprintk("Device disabled\n");
4480         return 0;
4481 }
4482 
4483 
4484 /*
4485  *  Based on drivers/acpi/pci_link.c:acpi_pci_link_set
4486  *
4487  *  Call _SRS to set current resources
4488  */
4489 static int sony_pic_enable(struct acpi_device *device,
4490                 struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
4491 {
4492         acpi_status status;
4493         int result = 0;
4494         /* Type 1 resource layout is:
4495          *    IO
4496          *    IO
4497          *    IRQNoFlags
4498          *    End
4499          *
4500          * Type 2 and 3 resource layout is:
4501          *    IO
4502          *    IRQNoFlags
4503          *    End
4504          */
4505         struct {
4506                 struct acpi_resource res1;
4507                 struct acpi_resource res2;
4508                 struct acpi_resource res3;
4509                 struct acpi_resource res4;
4510         } *resource;
4511         struct acpi_buffer buffer = { 0, NULL };
4512 
4513         if (!ioport || !irq)
4514                 return -EINVAL;
4515 
4516         /* init acpi_buffer */
4517         resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
4518         if (!resource)
4519                 return -ENOMEM;
4520 
4521         buffer.length = sizeof(*resource) + 1;
4522         buffer.pointer = resource;
4523 
4524         /* setup Type 1 resources */
4525         if (spic_dev.model == SONYPI_DEVICE_TYPE1) {
4526 
4527                 /* setup io resources */
4528                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
4529                 resource->res1.length = sizeof(struct acpi_resource);
4530                 memcpy(&resource->res1.data.io, &ioport->io1,
4531                                 sizeof(struct acpi_resource_io));
4532 
4533                 resource->res2.type = ACPI_RESOURCE_TYPE_IO;
4534                 resource->res2.length = sizeof(struct acpi_resource);
4535                 memcpy(&resource->res2.data.io, &ioport->io2,
4536                                 sizeof(struct acpi_resource_io));
4537 
4538                 /* setup irq resource */
4539                 resource->res3.type = ACPI_RESOURCE_TYPE_IRQ;
4540                 resource->res3.length = sizeof(struct acpi_resource);
4541                 memcpy(&resource->res3.data.irq, &irq->irq,
4542                                 sizeof(struct acpi_resource_irq));
4543                 /* we requested a shared irq */
4544                 resource->res3.data.irq.sharable = ACPI_SHARED;
4545 
4546                 resource->res4.type = ACPI_RESOURCE_TYPE_END_TAG;
4547                 resource->res4.length = sizeof(struct acpi_resource);
4548         }
4549         /* setup Type 2/3 resources */
4550         else {
4551                 /* setup io resource */
4552                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
4553                 resource->res1.length = sizeof(struct acpi_resource);
4554                 memcpy(&resource->res1.data.io, &ioport->io1,
4555                                 sizeof(struct acpi_resource_io));
4556 
4557                 /* setup irq resource */
4558                 resource->res2.type = ACPI_RESOURCE_TYPE_IRQ;
4559                 resource->res2.length = sizeof(struct acpi_resource);
4560                 memcpy(&resource->res2.data.irq, &irq->irq,
4561                                 sizeof(struct acpi_resource_irq));
4562                 /* we requested a shared irq */
4563                 resource->res2.data.irq.sharable = ACPI_SHARED;
4564 
4565                 resource->res3.type = ACPI_RESOURCE_TYPE_END_TAG;
4566                 resource->res3.length = sizeof(struct acpi_resource);
4567         }
4568 
4569         /* Attempt to set the resource */
4570         dprintk("Evaluating _SRS\n");
4571         status = acpi_set_current_resources(device->handle, &buffer);
4572 
4573         /* check for total failure */
4574         if (ACPI_FAILURE(status)) {
4575                 pr_err("Error evaluating _SRS\n");
4576                 result = -ENODEV;
4577                 goto end;
4578         }
4579 
4580         /* Necessary device initializations calls (from sonypi) */
4581         sony_pic_call1(0x82);
4582         sony_pic_call2(0x81, 0xff);
4583         sony_pic_call1(compat ? 0x92 : 0x82);
4584 
4585 end:
4586         kfree(resource);
4587         return result;
4588 }
4589 
4590 /*****************
4591  *
4592  * ISR: some event is available
4593  *
4594  *****************/
4595 static irqreturn_t sony_pic_irq(int irq, void *dev_id)
4596 {
4597         int i, j;
4598         u8 ev = 0;
4599         u8 data_mask = 0;
4600         u8 device_event = 0;
4601 
4602         struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;
4603 
4604         ev = inb_p(dev->cur_ioport->io1.minimum);
4605         if (dev->cur_ioport->io2.minimum)
4606                 data_mask = inb_p(dev->cur_ioport->io2.minimum);
4607         else
4608                 data_mask = inb_p(dev->cur_ioport->io1.minimum +
4609                                 dev->evport_offset);
4610 
4611         dprintk("event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
4612                         ev, data_mask, dev->cur_ioport->io1.minimum,
4613                         dev->evport_offset);
4614 
4615         if (ev == 0x00 || ev == 0xff)
4616                 return IRQ_HANDLED;
4617 
4618         for (i = 0; dev->event_types[i].mask; i++) {
4619 
4620                 if ((data_mask & dev->event_types[i].data) !=
4621                     dev->event_types[i].data)
4622                         continue;
4623 
4624                 if (!(mask & dev->event_types[i].mask))
4625                         continue;
4626 
4627                 for (j = 0; dev->event_types[i].events[j].event; j++) {
4628                         if (ev == dev->event_types[i].events[j].data) {
4629                                 device_event =
4630                                         dev->event_types[i].events[j].event;
4631                                 /* some events may require ignoring */
4632                                 if (!device_event)
4633                                         return IRQ_HANDLED;
4634                                 goto found;
4635                         }
4636                 }
4637         }
4638         /* Still not able to decode the event try to pass
4639          * it over to the minidriver
4640          */
4641         if (dev->handle_irq && dev->handle_irq(data_mask, ev) == 0)
4642                 return IRQ_HANDLED;
4643 
4644         dprintk("unknown event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
4645                         ev, data_mask, dev->cur_ioport->io1.minimum,
4646                         dev->evport_offset);
4647         return IRQ_HANDLED;
4648 
4649 found:
4650         sony_laptop_report_input_event(device_event);
4651         sonypi_compat_report_event(device_event);
4652         return IRQ_HANDLED;
4653 }
4654 
4655 /*****************
4656  *
4657  *  ACPI driver
4658  *
4659  *****************/
4660 static int sony_pic_remove(struct acpi_device *device)
4661 {
4662         struct sony_pic_ioport *io, *tmp_io;
4663         struct sony_pic_irq *irq, *tmp_irq;
4664 
4665         if (sony_pic_disable(device)) {
4666                 pr_err("Couldn't disable device\n");
4667                 return -ENXIO;
4668         }
4669 
4670         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
4671         release_region(spic_dev.cur_ioport->io1.minimum,
4672                         spic_dev.cur_ioport->io1.address_length);
4673         if (spic_dev.cur_ioport->io2.minimum)
4674                 release_region(spic_dev.cur_ioport->io2.minimum,
4675                                 spic_dev.cur_ioport->io2.address_length);
4676 
4677         sonypi_compat_exit();
4678 
4679         sony_laptop_remove_input();
4680 
4681         /* pf attrs */
4682         sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
4683         sony_pf_remove();
4684 
4685         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
4686                 list_del(&io->list);
4687                 kfree(io);
4688         }
4689         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
4690                 list_del(&irq->list);
4691                 kfree(irq);
4692         }
4693         spic_dev.cur_ioport = NULL;
4694         spic_dev.cur_irq = NULL;
4695 
4696         dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
4697         return 0;
4698 }
4699 
4700 static int sony_pic_add(struct acpi_device *device)
4701 {
4702         int result;
4703         struct sony_pic_ioport *io, *tmp_io;
4704         struct sony_pic_irq *irq, *tmp_irq;
4705 
4706         spic_dev.acpi_dev = device;
4707         strcpy(acpi_device_class(device), "sony/hotkey");
4708         sony_pic_detect_device_type(&spic_dev);
4709         mutex_init(&spic_dev.lock);
4710 
4711         /* read _PRS resources */
4712         result = sony_pic_possible_resources(device);
4713         if (result) {
4714                 pr_err("Unable to read possible resources\n");
4715                 goto err_free_resources;
4716         }
4717 
4718         /* setup input devices and helper fifo */
4719         result = sony_laptop_setup_input(device);
4720         if (result) {
4721                 pr_err("Unable to create input devices\n");
4722                 goto err_free_resources;
4723         }
4724 
4725         result = sonypi_compat_init();
4726         if (result)
4727                 goto err_remove_input;
4728 
4729         /* request io port */
4730         list_for_each_entry_reverse(io, &spic_dev.ioports, list) {
4731                 if (request_region(io->io1.minimum, io->io1.address_length,
4732                                         "Sony Programmable I/O Device")) {
4733                         dprintk("I/O port1: 0x%.4x (0x%.4x) + 0x%.2x\n",
4734                                         io->io1.minimum, io->io1.maximum,
4735                                         io->io1.address_length);
4736                         /* Type 1 have 2 ioports */
4737                         if (io->io2.minimum) {
4738                                 if (request_region(io->io2.minimum,
4739                                                 io->io2.address_length,
4740                                                 "Sony Programmable I/O Device")) {
4741                                         dprintk("I/O port2: 0x%.4x (0x%.4x) + 0x%.2x\n",
4742                                                         io->io2.minimum, io->io2.maximum,
4743                                                         io->io2.address_length);
4744                                         spic_dev.cur_ioport = io;
4745                                         break;
4746                                 }
4747                                 else {
4748                                         dprintk("Unable to get I/O port2: "
4749                                                         "0x%.4x (0x%.4x) + 0x%.2x\n",
4750                                                         io->io2.minimum, io->io2.maximum,
4751                                                         io->io2.address_length);
4752                                         release_region(io->io1.minimum,
4753                                                         io->io1.address_length);
4754                                 }
4755                         }
4756                         else {
4757                                 spic_dev.cur_ioport = io;
4758                                 break;
4759                         }
4760                 }
4761         }
4762         if (!spic_dev.cur_ioport) {
4763                 pr_err("Failed to request_region\n");
4764                 result = -ENODEV;
4765                 goto err_remove_compat;
4766         }
4767 
4768         /* request IRQ */
4769         list_for_each_entry_reverse(irq, &spic_dev.interrupts, list) {
4770                 if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
4771                                         0, "sony-laptop", &spic_dev)) {
4772                         dprintk("IRQ: %d - triggering: %d - "
4773                                         "polarity: %d - shr: %d\n",
4774                                         irq->irq.interrupts[0],
4775                                         irq->irq.triggering,
4776                                         irq->irq.polarity,
4777                                         irq->irq.sharable);
4778                         spic_dev.cur_irq = irq;
4779                         break;
4780                 }
4781         }
4782         if (!spic_dev.cur_irq) {
4783                 pr_err("Failed to request_irq\n");
4784                 result = -ENODEV;
4785                 goto err_release_region;
4786         }
4787 
4788         /* set resource status _SRS */
4789         result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
4790         if (result) {
4791                 pr_err("Couldn't enable device\n");
4792                 goto err_free_irq;
4793         }
4794 
4795         spic_dev.bluetooth_power = -1;
4796         /* create device attributes */
4797         result = sony_pf_add();
4798         if (result)
4799                 goto err_disable_device;
4800 
4801         result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
4802         if (result)
4803                 goto err_remove_pf;
4804 
4805         pr_info("SPIC setup done.\n");
4806         return 0;
4807 
4808 err_remove_pf:
4809         sony_pf_remove();
4810 
4811 err_disable_device:
4812         sony_pic_disable(device);
4813 
4814 err_free_irq:
4815         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
4816 
4817 err_release_region:
4818         release_region(spic_dev.cur_ioport->io1.minimum,
4819                         spic_dev.cur_ioport->io1.address_length);
4820         if (spic_dev.cur_ioport->io2.minimum)
4821                 release_region(spic_dev.cur_ioport->io2.minimum,
4822                                 spic_dev.cur_ioport->io2.address_length);
4823 
4824 err_remove_compat:
4825         sonypi_compat_exit();
4826 
4827 err_remove_input:
4828         sony_laptop_remove_input();
4829 
4830 err_free_resources:
4831         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
4832                 list_del(&io->list);
4833                 kfree(io);
4834         }
4835         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
4836                 list_del(&irq->list);
4837                 kfree(irq);
4838         }
4839         spic_dev.cur_ioport = NULL;
4840         spic_dev.cur_irq = NULL;
4841 
4842         return result;
4843 }
4844 
4845 #ifdef CONFIG_PM_SLEEP
4846 static int sony_pic_suspend(struct device *dev)
4847 {
4848         if (sony_pic_disable(to_acpi_device(dev)))
4849                 return -ENXIO;
4850         return 0;
4851 }
4852 
4853 static int sony_pic_resume(struct device *dev)
4854 {
4855         sony_pic_enable(to_acpi_device(dev),
4856                         spic_dev.cur_ioport, spic_dev.cur_irq);
4857         return 0;
4858 }
4859 #endif
4860 
4861 static SIMPLE_DEV_PM_OPS(sony_pic_pm, sony_pic_suspend, sony_pic_resume);
4862 
4863 static const struct acpi_device_id sony_pic_device_ids[] = {
4864         {SONY_PIC_HID, 0},
4865         {"", 0},
4866 };
4867 
4868 static struct acpi_driver sony_pic_driver = {
4869         .name = SONY_PIC_DRIVER_NAME,
4870         .class = SONY_PIC_CLASS,
4871         .ids = sony_pic_device_ids,
4872         .owner = THIS_MODULE,
4873         .ops = {
4874                 .add = sony_pic_add,
4875                 .remove = sony_pic_remove,
4876                 },
4877         .drv.pm = &sony_pic_pm,
4878 };
4879 
4880 static struct dmi_system_id __initdata sonypi_dmi_table[] = {
4881         {
4882                 .ident = "Sony Vaio",
4883                 .matches = {
4884                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
4885                         DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
4886                 },
4887         },
4888         {
4889                 .ident = "Sony Vaio",
4890                 .matches = {
4891                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
4892                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
4893                 },
4894         },
4895         { }
4896 };
4897 
4898 static int __init sony_laptop_init(void)
4899 {
4900         int result;
4901 
4902         if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
4903                 result = acpi_bus_register_driver(&sony_pic_driver);
4904                 if (result) {
4905                         pr_err("Unable to register SPIC driver\n");
4906                         goto out;
4907                 }
4908                 spic_drv_registered = 1;
4909         }
4910 
4911         result = acpi_bus_register_driver(&sony_nc_driver);
4912         if (result) {
4913                 pr_err("Unable to register SNC driver\n");
4914                 goto out_unregister_pic;
4915         }
4916 
4917         return 0;
4918 
4919 out_unregister_pic:
4920         if (spic_drv_registered)
4921                 acpi_bus_unregister_driver(&sony_pic_driver);
4922 out:
4923         return result;
4924 }
4925 
4926 static void __exit sony_laptop_exit(void)
4927 {
4928         acpi_bus_unregister_driver(&sony_nc_driver);
4929         if (spic_drv_registered)
4930                 acpi_bus_unregister_driver(&sony_pic_driver);
4931 }
4932 
4933 module_init(sony_laptop_init);
4934 module_exit(sony_laptop_exit);
4935 

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