Version:  2.0.40 2.2.26 2.4.37 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4

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 0x0163:
1397                         result = sony_nc_kbd_backlight_setup(pf_device, handle);
1398                         if (result)
1399                                 pr_err("couldn't set up keyboard backlight function (%d)\n",
1400                                                 result);
1401                         break;
1402                 case 0x0121:
1403                         result = sony_nc_lowbatt_setup(pf_device);
1404                         if (result)
1405                                 pr_err("couldn't set up low battery function (%d)\n",
1406                                        result);
1407                         break;
1408                 case 0x0149:
1409                         result = sony_nc_fanspeed_setup(pf_device);
1410                         if (result)
1411                                 pr_err("couldn't set up fan speed function (%d)\n",
1412                                        result);
1413                         break;
1414                 case 0x0155:
1415                         result = sony_nc_usb_charge_setup(pf_device);
1416                         if (result)
1417                                 pr_err("couldn't set up USB charge support (%d)\n",
1418                                                 result);
1419                         break;
1420                 case 0x011D:
1421                         result = sony_nc_panelid_setup(pf_device);
1422                         if (result)
1423                                 pr_err("couldn't set up panel ID function (%d)\n",
1424                                        result);
1425                         break;
1426                 case 0x0168:
1427                         result = sony_nc_smart_conn_setup(pf_device);
1428                         if (result)
1429                                 pr_err("couldn't set up smart connect support (%d)\n",
1430                                                 result);
1431                         break;
1432                 default:
1433                         continue;
1434                 }
1435         }
1436 
1437         /* Enable all events */
1438         arg = 0x10;
1439         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1440                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1441                                 &result);
1442 }
1443 
1444 static void sony_nc_function_cleanup(struct platform_device *pd)
1445 {
1446         unsigned int i, result, bitmask, handle;
1447 
1448         /* get enabled events and disable them */
1449         sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
1450         sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);
1451 
1452         /* cleanup handles here */
1453         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1454 
1455                 handle = handles->cap[i];
1456 
1457                 if (!handle)
1458                         continue;
1459 
1460                 switch (handle) {
1461                 case 0x0105:
1462                 case 0x0148:
1463                         sony_nc_touchpad_cleanup(pd);
1464                         break;
1465                 case 0x0115:
1466                 case 0x0136:
1467                 case 0x013f:
1468                         sony_nc_battery_care_cleanup(pd);
1469                         break;
1470                 case 0x0119:
1471                 case 0x015D:
1472                         sony_nc_lid_resume_cleanup(pd);
1473                         break;
1474                 case 0x0122:
1475                         sony_nc_thermal_cleanup(pd);
1476                         break;
1477                 case 0x0128:
1478                 case 0x0146:
1479                 case 0x015B:
1480                         sony_nc_gfx_switch_cleanup(pd);
1481                         break;
1482                 case 0x0131:
1483                         sony_nc_highspeed_charging_cleanup(pd);
1484                         break;
1485                 case 0x0124:
1486                 case 0x0135:
1487                         sony_nc_rfkill_cleanup();
1488                         break;
1489                 case 0x0137:
1490                 case 0x0143:
1491                 case 0x014b:
1492                 case 0x014c:
1493                 case 0x0163:
1494                         sony_nc_kbd_backlight_cleanup(pd, handle);
1495                         break;
1496                 case 0x0121:
1497                         sony_nc_lowbatt_cleanup(pd);
1498                         break;
1499                 case 0x0149:
1500                         sony_nc_fanspeed_cleanup(pd);
1501                         break;
1502                 case 0x0155:
1503                         sony_nc_usb_charge_cleanup(pd);
1504                         break;
1505                 case 0x011D:
1506                         sony_nc_panelid_cleanup(pd);
1507                         break;
1508                 case 0x0168:
1509                         sony_nc_smart_conn_cleanup(pd);
1510                         break;
1511                 default:
1512                         continue;
1513                 }
1514         }
1515 
1516         /* finally cleanup the handles list */
1517         sony_nc_handles_cleanup(pd);
1518 }
1519 
1520 #ifdef CONFIG_PM_SLEEP
1521 static void sony_nc_function_resume(void)
1522 {
1523         unsigned int i, result, bitmask, arg;
1524 
1525         dprintk("Resuming SNC device\n");
1526 
1527         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1528                 unsigned int handle = handles->cap[i];
1529 
1530                 if (!handle)
1531                         continue;
1532 
1533                 switch (handle) {
1534                 case 0x0100:
1535                 case 0x0101:
1536                 case 0x0127:
1537                         /* re-enable hotkeys */
1538                         sony_call_snc_handle(handle, 0, &result);
1539                         break;
1540                 case 0x0102:
1541                         /* re-enable hotkeys */
1542                         sony_call_snc_handle(handle, 0x100, &result);
1543                         break;
1544                 case 0x0122:
1545                         sony_nc_thermal_resume();
1546                         break;
1547                 case 0x0124:
1548                 case 0x0135:
1549                         sony_nc_rfkill_update();
1550                         break;
1551                 default:
1552                         continue;
1553                 }
1554         }
1555 
1556         /* Enable all events */
1557         arg = 0x10;
1558         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1559                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1560                                 &result);
1561 }
1562 
1563 static int sony_nc_resume(struct device *dev)
1564 {
1565         struct sony_nc_value *item;
1566 
1567         for (item = sony_nc_values; item->name; item++) {
1568                 int ret;
1569 
1570                 if (!item->valid)
1571                         continue;
1572                 ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
1573                                        &item->value, NULL);
1574                 if (ret < 0) {
1575                         pr_err("%s: %d\n", __func__, ret);
1576                         break;
1577                 }
1578         }
1579 
1580         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
1581                 int arg = 1;
1582                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
1583                         dprintk("ECON Method failed\n");
1584         }
1585 
1586         if (acpi_has_method(sony_nc_acpi_handle, "SN00"))
1587                 sony_nc_function_resume();
1588 
1589         return 0;
1590 }
1591 #endif
1592 
1593 static SIMPLE_DEV_PM_OPS(sony_nc_pm, NULL, sony_nc_resume);
1594 
1595 static void sony_nc_rfkill_cleanup(void)
1596 {
1597         int i;
1598 
1599         for (i = 0; i < N_SONY_RFKILL; i++) {
1600                 if (sony_rfkill_devices[i]) {
1601                         rfkill_unregister(sony_rfkill_devices[i]);
1602                         rfkill_destroy(sony_rfkill_devices[i]);
1603                 }
1604         }
1605 }
1606 
1607 static int sony_nc_rfkill_set(void *data, bool blocked)
1608 {
1609         int result;
1610         int argument = sony_rfkill_address[(long) data] + 0x100;
1611 
1612         if (!blocked)
1613                 argument |= 0x070000;
1614 
1615         return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1616 }
1617 
1618 static const struct rfkill_ops sony_rfkill_ops = {
1619         .set_block = sony_nc_rfkill_set,
1620 };
1621 
1622 static int sony_nc_setup_rfkill(struct acpi_device *device,
1623                                 enum sony_nc_rfkill nc_type)
1624 {
1625         int err = 0;
1626         struct rfkill *rfk;
1627         enum rfkill_type type;
1628         const char *name;
1629         int result;
1630         bool hwblock, swblock;
1631 
1632         switch (nc_type) {
1633         case SONY_WIFI:
1634                 type = RFKILL_TYPE_WLAN;
1635                 name = "sony-wifi";
1636                 break;
1637         case SONY_BLUETOOTH:
1638                 type = RFKILL_TYPE_BLUETOOTH;
1639                 name = "sony-bluetooth";
1640                 break;
1641         case SONY_WWAN:
1642                 type = RFKILL_TYPE_WWAN;
1643                 name = "sony-wwan";
1644                 break;
1645         case SONY_WIMAX:
1646                 type = RFKILL_TYPE_WIMAX;
1647                 name = "sony-wimax";
1648                 break;
1649         default:
1650                 return -EINVAL;
1651         }
1652 
1653         rfk = rfkill_alloc(name, &device->dev, type,
1654                            &sony_rfkill_ops, (void *)nc_type);
1655         if (!rfk)
1656                 return -ENOMEM;
1657 
1658         if (sony_call_snc_handle(sony_rfkill_handle, 0x200, &result) < 0) {
1659                 rfkill_destroy(rfk);
1660                 return -1;
1661         }
1662         hwblock = !(result & 0x1);
1663 
1664         if (sony_call_snc_handle(sony_rfkill_handle,
1665                                 sony_rfkill_address[nc_type],
1666                                 &result) < 0) {
1667                 rfkill_destroy(rfk);
1668                 return -1;
1669         }
1670         swblock = !(result & 0x2);
1671 
1672         rfkill_init_sw_state(rfk, swblock);
1673         rfkill_set_hw_state(rfk, hwblock);
1674 
1675         err = rfkill_register(rfk);
1676         if (err) {
1677                 rfkill_destroy(rfk);
1678                 return err;
1679         }
1680         sony_rfkill_devices[nc_type] = rfk;
1681         return err;
1682 }
1683 
1684 static void sony_nc_rfkill_update(void)
1685 {
1686         enum sony_nc_rfkill i;
1687         int result;
1688         bool hwblock;
1689 
1690         sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
1691         hwblock = !(result & 0x1);
1692 
1693         for (i = 0; i < N_SONY_RFKILL; i++) {
1694                 int argument = sony_rfkill_address[i];
1695 
1696                 if (!sony_rfkill_devices[i])
1697                         continue;
1698 
1699                 if (hwblock) {
1700                         if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) {
1701                                 /* we already know we're blocked */
1702                         }
1703                         continue;
1704                 }
1705 
1706                 sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1707                 rfkill_set_states(sony_rfkill_devices[i],
1708                                   !(result & 0x2), false);
1709         }
1710 }
1711 
1712 static int sony_nc_rfkill_setup(struct acpi_device *device,
1713                 unsigned int handle)
1714 {
1715         u64 offset;
1716         int i;
1717         unsigned char buffer[32] = { 0 };
1718 
1719         offset = sony_find_snc_handle(handle);
1720         sony_rfkill_handle = handle;
1721 
1722         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
1723                         32);
1724         if (i < 0)
1725                 return i;
1726 
1727         /* The buffer is filled with magic numbers describing the devices
1728          * available, 0xff terminates the enumeration.
1729          * Known codes:
1730          *      0x00 WLAN
1731          *      0x10 BLUETOOTH
1732          *      0x20 WWAN GPRS-EDGE
1733          *      0x21 WWAN HSDPA
1734          *      0x22 WWAN EV-DO
1735          *      0x23 WWAN GPS
1736          *      0x25 Gobi WWAN no GPS
1737          *      0x26 Gobi WWAN + GPS
1738          *      0x28 Gobi WWAN no GPS
1739          *      0x29 Gobi WWAN + GPS
1740          *      0x30 WIMAX
1741          *      0x50 Gobi WWAN no GPS
1742          *      0x51 Gobi WWAN + GPS
1743          *      0x70 no SIM card slot
1744          *      0x71 SIM card slot
1745          */
1746         for (i = 0; i < ARRAY_SIZE(buffer); i++) {
1747 
1748                 if (buffer[i] == 0xff)
1749                         break;
1750 
1751                 dprintk("Radio devices, found 0x%.2x\n", buffer[i]);
1752 
1753                 if (buffer[i] == 0 && !sony_rfkill_devices[SONY_WIFI])
1754                         sony_nc_setup_rfkill(device, SONY_WIFI);
1755 
1756                 if (buffer[i] == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH])
1757                         sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
1758 
1759                 if (((0xf0 & buffer[i]) == 0x20 ||
1760                                         (0xf0 & buffer[i]) == 0x50) &&
1761                                 !sony_rfkill_devices[SONY_WWAN])
1762                         sony_nc_setup_rfkill(device, SONY_WWAN);
1763 
1764                 if (buffer[i] == 0x30 && !sony_rfkill_devices[SONY_WIMAX])
1765                         sony_nc_setup_rfkill(device, SONY_WIMAX);
1766         }
1767         return 0;
1768 }
1769 
1770 /* Keyboard backlight feature */
1771 struct kbd_backlight {
1772         unsigned int handle;
1773         unsigned int base;
1774         unsigned int mode;
1775         unsigned int timeout;
1776         struct device_attribute mode_attr;
1777         struct device_attribute timeout_attr;
1778 };
1779 
1780 static struct kbd_backlight *kbdbl_ctl;
1781 
1782 static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value)
1783 {
1784         int result;
1785 
1786         if (value > 2)
1787                 return -EINVAL;
1788 
1789         if (sony_call_snc_handle(kbdbl_ctl->handle,
1790                                 (value << 0x10) | (kbdbl_ctl->base), &result))
1791                 return -EIO;
1792 
1793         /* Try to turn the light on/off immediately */
1794         if (value != 1)
1795                 sony_call_snc_handle(kbdbl_ctl->handle,
1796                                 (value << 0x0f) | (kbdbl_ctl->base + 0x100),
1797                                 &result);
1798 
1799         kbdbl_ctl->mode = value;
1800 
1801         return 0;
1802 }
1803 
1804 static ssize_t sony_nc_kbd_backlight_mode_store(struct device *dev,
1805                 struct device_attribute *attr,
1806                 const char *buffer, size_t count)
1807 {
1808         int ret = 0;
1809         unsigned long value;
1810 
1811         if (count > 31)
1812                 return -EINVAL;
1813 
1814         if (kstrtoul(buffer, 10, &value))
1815                 return -EINVAL;
1816 
1817         ret = __sony_nc_kbd_backlight_mode_set(value);
1818         if (ret < 0)
1819                 return ret;
1820 
1821         return count;
1822 }
1823 
1824 static ssize_t sony_nc_kbd_backlight_mode_show(struct device *dev,
1825                 struct device_attribute *attr, char *buffer)
1826 {
1827         ssize_t count = 0;
1828         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->mode);
1829         return count;
1830 }
1831 
1832 static int __sony_nc_kbd_backlight_timeout_set(u8 value)
1833 {
1834         int result;
1835 
1836         if (value > 3)
1837                 return -EINVAL;
1838 
1839         if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) |
1840                                 (kbdbl_ctl->base + 0x200), &result))
1841                 return -EIO;
1842 
1843         kbdbl_ctl->timeout = value;
1844 
1845         return 0;
1846 }
1847 
1848 static ssize_t sony_nc_kbd_backlight_timeout_store(struct device *dev,
1849                 struct device_attribute *attr,
1850                 const char *buffer, size_t count)
1851 {
1852         int ret = 0;
1853         unsigned long value;
1854 
1855         if (count > 31)
1856                 return -EINVAL;
1857 
1858         if (kstrtoul(buffer, 10, &value))
1859                 return -EINVAL;
1860 
1861         ret = __sony_nc_kbd_backlight_timeout_set(value);
1862         if (ret < 0)
1863                 return ret;
1864 
1865         return count;
1866 }
1867 
1868 static ssize_t sony_nc_kbd_backlight_timeout_show(struct device *dev,
1869                 struct device_attribute *attr, char *buffer)
1870 {
1871         ssize_t count = 0;
1872         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->timeout);
1873         return count;
1874 }
1875 
1876 static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
1877                 unsigned int handle)
1878 {
1879         int result;
1880         int ret = 0;
1881 
1882         if (kbdbl_ctl) {
1883                 pr_warn("handle 0x%.4x: keyboard backlight setup already done for 0x%.4x\n",
1884                                 handle, kbdbl_ctl->handle);
1885                 return -EBUSY;
1886         }
1887 
1888         /* verify the kbd backlight presence, these handles are not used for
1889          * keyboard backlight only
1890          */
1891         ret = sony_call_snc_handle(handle, handle == 0x0137 ? 0x0B00 : 0x0100,
1892                         &result);
1893         if (ret)
1894                 return ret;
1895 
1896         if ((handle == 0x0137 && !(result & 0x02)) ||
1897                         !(result & 0x01)) {
1898                 dprintk("no backlight keyboard found\n");
1899                 return 0;
1900         }
1901 
1902         kbdbl_ctl = kzalloc(sizeof(*kbdbl_ctl), GFP_KERNEL);
1903         if (!kbdbl_ctl)
1904                 return -ENOMEM;
1905 
1906         kbdbl_ctl->mode = kbd_backlight;
1907         kbdbl_ctl->timeout = kbd_backlight_timeout;
1908         kbdbl_ctl->handle = handle;
1909         if (handle == 0x0137)
1910                 kbdbl_ctl->base = 0x0C00;
1911         else
1912                 kbdbl_ctl->base = 0x4000;
1913 
1914         sysfs_attr_init(&kbdbl_ctl->mode_attr.attr);
1915         kbdbl_ctl->mode_attr.attr.name = "kbd_backlight";
1916         kbdbl_ctl->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
1917         kbdbl_ctl->mode_attr.show = sony_nc_kbd_backlight_mode_show;
1918         kbdbl_ctl->mode_attr.store = sony_nc_kbd_backlight_mode_store;
1919 
1920         sysfs_attr_init(&kbdbl_ctl->timeout_attr.attr);
1921         kbdbl_ctl->timeout_attr.attr.name = "kbd_backlight_timeout";
1922         kbdbl_ctl->timeout_attr.attr.mode = S_IRUGO | S_IWUSR;
1923         kbdbl_ctl->timeout_attr.show = sony_nc_kbd_backlight_timeout_show;
1924         kbdbl_ctl->timeout_attr.store = sony_nc_kbd_backlight_timeout_store;
1925 
1926         ret = device_create_file(&pd->dev, &kbdbl_ctl->mode_attr);
1927         if (ret)
1928                 goto outkzalloc;
1929 
1930         ret = device_create_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1931         if (ret)
1932                 goto outmode;
1933 
1934         __sony_nc_kbd_backlight_mode_set(kbdbl_ctl->mode);
1935         __sony_nc_kbd_backlight_timeout_set(kbdbl_ctl->timeout);
1936 
1937         return 0;
1938 
1939 outmode:
1940         device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1941 outkzalloc:
1942         kfree(kbdbl_ctl);
1943         kbdbl_ctl = NULL;
1944         return ret;
1945 }
1946 
1947 static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
1948                 unsigned int handle)
1949 {
1950         if (kbdbl_ctl && handle == kbdbl_ctl->handle) {
1951                 device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1952                 device_remove_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1953                 kfree(kbdbl_ctl);
1954                 kbdbl_ctl = NULL;
1955         }
1956 }
1957 
1958 struct battery_care_control {
1959         struct device_attribute attrs[2];
1960         unsigned int handle;
1961 };
1962 static struct battery_care_control *bcare_ctl;
1963 
1964 static ssize_t sony_nc_battery_care_limit_store(struct device *dev,
1965                 struct device_attribute *attr,
1966                 const char *buffer, size_t count)
1967 {
1968         unsigned int result, cmd;
1969         unsigned long value;
1970 
1971         if (count > 31)
1972                 return -EINVAL;
1973 
1974         if (kstrtoul(buffer, 10, &value))
1975                 return -EINVAL;
1976 
1977         /*  limit values (2 bits):
1978          *  00 - none
1979          *  01 - 80%
1980          *  10 - 50%
1981          *  11 - 100%
1982          *
1983          *  bit 0: 0 disable BCL, 1 enable BCL
1984          *  bit 1: 1 tell to store the battery limit (see bits 6,7) too
1985          *  bits 2,3: reserved
1986          *  bits 4,5: store the limit into the EC
1987          *  bits 6,7: store the limit into the battery
1988          */
1989         cmd = 0;
1990 
1991         if (value > 0) {
1992                 if (value <= 50)
1993                         cmd = 0x20;
1994 
1995                 else if (value <= 80)
1996                         cmd = 0x10;
1997 
1998                 else if (value <= 100)
1999                         cmd = 0x30;
2000 
2001                 else
2002                         return -EINVAL;
2003 
2004                 /*
2005                  * handle 0x0115 should allow storing on battery too;
2006                  * handle 0x0136 same as 0x0115 + health status;
2007                  * handle 0x013f, same as 0x0136 but no storing on the battery
2008                  */
2009                 if (bcare_ctl->handle != 0x013f)
2010                         cmd = cmd | (cmd << 2);
2011 
2012                 cmd = (cmd | 0x1) << 0x10;
2013         }
2014 
2015         if (sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result))
2016                 return -EIO;
2017 
2018         return count;
2019 }
2020 
2021 static ssize_t sony_nc_battery_care_limit_show(struct device *dev,
2022                 struct device_attribute *attr, char *buffer)
2023 {
2024         unsigned int result, status;
2025 
2026         if (sony_call_snc_handle(bcare_ctl->handle, 0x0000, &result))
2027                 return -EIO;
2028 
2029         status = (result & 0x01) ? ((result & 0x30) >> 0x04) : 0;
2030         switch (status) {
2031         case 1:
2032                 status = 80;
2033                 break;
2034         case 2:
2035                 status = 50;
2036                 break;
2037         case 3:
2038                 status = 100;
2039                 break;
2040         default:
2041                 status = 0;
2042                 break;
2043         }
2044 
2045         return snprintf(buffer, PAGE_SIZE, "%d\n", status);
2046 }
2047 
2048 static ssize_t sony_nc_battery_care_health_show(struct device *dev,
2049                 struct device_attribute *attr, char *buffer)
2050 {
2051         ssize_t count = 0;
2052         unsigned int health;
2053 
2054         if (sony_call_snc_handle(bcare_ctl->handle, 0x0200, &health))
2055                 return -EIO;
2056 
2057         count = snprintf(buffer, PAGE_SIZE, "%d\n", health & 0xff);
2058 
2059         return count;
2060 }
2061 
2062 static int sony_nc_battery_care_setup(struct platform_device *pd,
2063                 unsigned int handle)
2064 {
2065         int ret = 0;
2066 
2067         bcare_ctl = kzalloc(sizeof(struct battery_care_control), GFP_KERNEL);
2068         if (!bcare_ctl)
2069                 return -ENOMEM;
2070 
2071         bcare_ctl->handle = handle;
2072 
2073         sysfs_attr_init(&bcare_ctl->attrs[0].attr);
2074         bcare_ctl->attrs[0].attr.name = "battery_care_limiter";
2075         bcare_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
2076         bcare_ctl->attrs[0].show = sony_nc_battery_care_limit_show;
2077         bcare_ctl->attrs[0].store = sony_nc_battery_care_limit_store;
2078 
2079         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[0]);
2080         if (ret)
2081                 goto outkzalloc;
2082 
2083         /* 0x0115 is for models with no health reporting capability */
2084         if (handle == 0x0115)
2085                 return 0;
2086 
2087         sysfs_attr_init(&bcare_ctl->attrs[1].attr);
2088         bcare_ctl->attrs[1].attr.name = "battery_care_health";
2089         bcare_ctl->attrs[1].attr.mode = S_IRUGO;
2090         bcare_ctl->attrs[1].show = sony_nc_battery_care_health_show;
2091 
2092         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[1]);
2093         if (ret)
2094                 goto outlimiter;
2095 
2096         return 0;
2097 
2098 outlimiter:
2099         device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2100 
2101 outkzalloc:
2102         kfree(bcare_ctl);
2103         bcare_ctl = NULL;
2104 
2105         return ret;
2106 }
2107 
2108 static void sony_nc_battery_care_cleanup(struct platform_device *pd)
2109 {
2110         if (bcare_ctl) {
2111                 device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2112                 if (bcare_ctl->handle != 0x0115)
2113                         device_remove_file(&pd->dev, &bcare_ctl->attrs[1]);
2114 
2115                 kfree(bcare_ctl);
2116                 bcare_ctl = NULL;
2117         }
2118 }
2119 
2120 struct snc_thermal_ctrl {
2121         unsigned int mode;
2122         unsigned int profiles;
2123         struct device_attribute mode_attr;
2124         struct device_attribute profiles_attr;
2125 };
2126 static struct snc_thermal_ctrl *th_handle;
2127 
2128 #define THM_PROFILE_MAX 3
2129 static const char * const snc_thermal_profiles[] = {
2130         "balanced",
2131         "silent",
2132         "performance"
2133 };
2134 
2135 static int sony_nc_thermal_mode_set(unsigned short mode)
2136 {
2137         unsigned int result;
2138 
2139         /* the thermal profile seems to be a two bit bitmask:
2140          * lsb -> silent
2141          * msb -> performance
2142          * no bit set is the normal operation and is always valid
2143          * Some vaio models only have "balanced" and "performance"
2144          */
2145         if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
2146                 return -EINVAL;
2147 
2148         if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
2149                 return -EIO;
2150 
2151         th_handle->mode = mode;
2152 
2153         return 0;
2154 }
2155 
2156 static int sony_nc_thermal_mode_get(void)
2157 {
2158         unsigned int result;
2159 
2160         if (sony_call_snc_handle(0x0122, 0x0100, &result))
2161                 return -EIO;
2162 
2163         return result & 0xff;
2164 }
2165 
2166 static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
2167                 struct device_attribute *attr, char *buffer)
2168 {
2169         short cnt;
2170         size_t idx = 0;
2171 
2172         for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
2173                 if (!cnt || (th_handle->profiles & cnt))
2174                         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
2175                                         snc_thermal_profiles[cnt]);
2176         }
2177         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
2178 
2179         return idx;
2180 }
2181 
2182 static ssize_t sony_nc_thermal_mode_store(struct device *dev,
2183                 struct device_attribute *attr,
2184                 const char *buffer, size_t count)
2185 {
2186         unsigned short cmd;
2187         size_t len = count;
2188 
2189         if (count == 0)
2190                 return -EINVAL;
2191 
2192         /* skip the newline if present */
2193         if (buffer[len - 1] == '\n')
2194                 len--;
2195 
2196         for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
2197                 if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
2198                         break;
2199 
2200         if (sony_nc_thermal_mode_set(cmd))
2201                 return -EIO;
2202 
2203         return count;
2204 }
2205 
2206 static ssize_t sony_nc_thermal_mode_show(struct device *dev,
2207                 struct device_attribute *attr, char *buffer)
2208 {
2209         ssize_t count = 0;
2210         int mode = sony_nc_thermal_mode_get();
2211 
2212         if (mode < 0)
2213                 return mode;
2214 
2215         count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
2216 
2217         return count;
2218 }
2219 
2220 static int sony_nc_thermal_setup(struct platform_device *pd)
2221 {
2222         int ret = 0;
2223         th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
2224         if (!th_handle)
2225                 return -ENOMEM;
2226 
2227         ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
2228         if (ret) {
2229                 pr_warn("couldn't to read the thermal profiles\n");
2230                 goto outkzalloc;
2231         }
2232 
2233         ret = sony_nc_thermal_mode_get();
2234         if (ret < 0) {
2235                 pr_warn("couldn't to read the current thermal profile");
2236                 goto outkzalloc;
2237         }
2238         th_handle->mode = ret;
2239 
2240         sysfs_attr_init(&th_handle->profiles_attr.attr);
2241         th_handle->profiles_attr.attr.name = "thermal_profiles";
2242         th_handle->profiles_attr.attr.mode = S_IRUGO;
2243         th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
2244 
2245         sysfs_attr_init(&th_handle->mode_attr.attr);
2246         th_handle->mode_attr.attr.name = "thermal_control";
2247         th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
2248         th_handle->mode_attr.show = sony_nc_thermal_mode_show;
2249         th_handle->mode_attr.store = sony_nc_thermal_mode_store;
2250 
2251         ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
2252         if (ret)
2253                 goto outkzalloc;
2254 
2255         ret = device_create_file(&pd->dev, &th_handle->mode_attr);
2256         if (ret)
2257                 goto outprofiles;
2258 
2259         return 0;
2260 
2261 outprofiles:
2262         device_remove_file(&pd->dev, &th_handle->profiles_attr);
2263 outkzalloc:
2264         kfree(th_handle);
2265         th_handle = NULL;
2266         return ret;
2267 }
2268 
2269 static void sony_nc_thermal_cleanup(struct platform_device *pd)
2270 {
2271         if (th_handle) {
2272                 device_remove_file(&pd->dev, &th_handle->profiles_attr);
2273                 device_remove_file(&pd->dev, &th_handle->mode_attr);
2274                 kfree(th_handle);
2275                 th_handle = NULL;
2276         }
2277 }
2278 
2279 #ifdef CONFIG_PM_SLEEP
2280 static void sony_nc_thermal_resume(void)
2281 {
2282         unsigned int status = sony_nc_thermal_mode_get();
2283 
2284         if (status != th_handle->mode)
2285                 sony_nc_thermal_mode_set(th_handle->mode);
2286 }
2287 #endif
2288 
2289 /* resume on LID open */
2290 #define LID_RESUME_S5   0
2291 #define LID_RESUME_S4   1
2292 #define LID_RESUME_S3   2
2293 #define LID_RESUME_MAX  3
2294 struct snc_lid_resume_control {
2295         struct device_attribute attrs[LID_RESUME_MAX];
2296         unsigned int status;
2297         int handle;
2298 };
2299 static struct snc_lid_resume_control *lid_ctl;
2300 
2301 static ssize_t sony_nc_lid_resume_store(struct device *dev,
2302                                         struct device_attribute *attr,
2303                                         const char *buffer, size_t count)
2304 {
2305         unsigned int result;
2306         unsigned long value;
2307         unsigned int pos = LID_RESUME_S5;
2308         if (count > 31)
2309                 return -EINVAL;
2310 
2311         if (kstrtoul(buffer, 10, &value) || value > 1)
2312                 return -EINVAL;
2313 
2314         /* the value we have to write to SNC is a bitmask:
2315          * +--------------+
2316          * | S3 | S4 | S5 |
2317          * +--------------+
2318          *   2    1    0
2319          */
2320         while (pos < LID_RESUME_MAX) {
2321                 if (&lid_ctl->attrs[pos].attr == &attr->attr)
2322                         break;
2323                 pos++;
2324         }
2325         if (pos == LID_RESUME_MAX)
2326                 return -EINVAL;
2327 
2328         if (value)
2329                 value = lid_ctl->status | (1 << pos);
2330         else
2331                 value = lid_ctl->status & ~(1 << pos);
2332 
2333         if (sony_call_snc_handle(lid_ctl->handle, value << 0x10 | 0x0100,
2334                                 &result))
2335                 return -EIO;
2336 
2337         lid_ctl->status = value;
2338 
2339         return count;
2340 }
2341 
2342 static ssize_t sony_nc_lid_resume_show(struct device *dev,
2343                                         struct device_attribute *attr,
2344                                         char *buffer)
2345 {
2346         unsigned int pos = LID_RESUME_S5;
2347 
2348         while (pos < LID_RESUME_MAX) {
2349                 if (&lid_ctl->attrs[pos].attr == &attr->attr)
2350                         return snprintf(buffer, PAGE_SIZE, "%d\n",
2351                                         (lid_ctl->status >> pos) & 0x01);
2352                 pos++;
2353         }
2354         return -EINVAL;
2355 }
2356 
2357 static int sony_nc_lid_resume_setup(struct platform_device *pd,
2358                                         unsigned int handle)
2359 {
2360         unsigned int result;
2361         int i;
2362 
2363         if (sony_call_snc_handle(handle, 0x0000, &result))
2364                 return -EIO;
2365 
2366         lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
2367         if (!lid_ctl)
2368                 return -ENOMEM;
2369 
2370         lid_ctl->status = result & 0x7;
2371         lid_ctl->handle = handle;
2372 
2373         sysfs_attr_init(&lid_ctl->attrs[0].attr);
2374         lid_ctl->attrs[LID_RESUME_S5].attr.name = "lid_resume_S5";
2375         lid_ctl->attrs[LID_RESUME_S5].attr.mode = S_IRUGO | S_IWUSR;
2376         lid_ctl->attrs[LID_RESUME_S5].show = sony_nc_lid_resume_show;
2377         lid_ctl->attrs[LID_RESUME_S5].store = sony_nc_lid_resume_store;
2378 
2379         if (handle == 0x0119) {
2380                 sysfs_attr_init(&lid_ctl->attrs[1].attr);
2381                 lid_ctl->attrs[LID_RESUME_S4].attr.name = "lid_resume_S4";
2382                 lid_ctl->attrs[LID_RESUME_S4].attr.mode = S_IRUGO | S_IWUSR;
2383                 lid_ctl->attrs[LID_RESUME_S4].show = sony_nc_lid_resume_show;
2384                 lid_ctl->attrs[LID_RESUME_S4].store = sony_nc_lid_resume_store;
2385 
2386                 sysfs_attr_init(&lid_ctl->attrs[2].attr);
2387                 lid_ctl->attrs[LID_RESUME_S3].attr.name = "lid_resume_S3";
2388                 lid_ctl->attrs[LID_RESUME_S3].attr.mode = S_IRUGO | S_IWUSR;
2389                 lid_ctl->attrs[LID_RESUME_S3].show = sony_nc_lid_resume_show;
2390                 lid_ctl->attrs[LID_RESUME_S3].store = sony_nc_lid_resume_store;
2391         }
2392         for (i = 0; i < LID_RESUME_MAX &&
2393                         lid_ctl->attrs[i].attr.name; i++) {
2394                 result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
2395                 if (result)
2396                         goto liderror;
2397         }
2398 
2399         return 0;
2400 
2401 liderror:
2402         for (i--; i >= 0; i--)
2403                 device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2404 
2405         kfree(lid_ctl);
2406         lid_ctl = NULL;
2407 
2408         return result;
2409 }
2410 
2411 static void sony_nc_lid_resume_cleanup(struct platform_device *pd)
2412 {
2413         int i;
2414 
2415         if (lid_ctl) {
2416                 for (i = 0; i < LID_RESUME_MAX; i++) {
2417                         if (!lid_ctl->attrs[i].attr.name)
2418                                 break;
2419 
2420                         device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2421                 }
2422 
2423                 kfree(lid_ctl);
2424                 lid_ctl = NULL;
2425         }
2426 }
2427 
2428 /* GFX Switch position */
2429 enum gfx_switch {
2430         SPEED,
2431         STAMINA,
2432         AUTO
2433 };
2434 struct snc_gfx_switch_control {
2435         struct device_attribute attr;
2436         unsigned int handle;
2437 };
2438 static struct snc_gfx_switch_control *gfxs_ctl;
2439 
2440 /* returns 0 for speed, 1 for stamina */
2441 static int __sony_nc_gfx_switch_status_get(void)
2442 {
2443         unsigned int result;
2444 
2445         if (sony_call_snc_handle(gfxs_ctl->handle,
2446                                 gfxs_ctl->handle == 0x015B ? 0x0000 : 0x0100,
2447                                 &result))
2448                 return -EIO;
2449 
2450         switch (gfxs_ctl->handle) {
2451         case 0x0146:
2452                 /* 1: discrete GFX (speed)
2453                  * 0: integrated GFX (stamina)
2454                  */
2455                 return result & 0x1 ? SPEED : STAMINA;
2456                 break;
2457         case 0x015B:
2458                 /* 0: discrete GFX (speed)
2459                  * 1: integrated GFX (stamina)
2460                  */
2461                 return result & 0x1 ? STAMINA : SPEED;
2462                 break;
2463         case 0x0128:
2464                 /* it's a more elaborated bitmask, for now:
2465                  * 2: integrated GFX (stamina)
2466                  * 0: discrete GFX (speed)
2467                  */
2468                 dprintk("GFX Status: 0x%x\n", result);
2469                 return result & 0x80 ? AUTO :
2470                         result & 0x02 ? STAMINA : SPEED;
2471                 break;
2472         }
2473         return -EINVAL;
2474 }
2475 
2476 static ssize_t sony_nc_gfx_switch_status_show(struct device *dev,
2477                                        struct device_attribute *attr,
2478                                        char *buffer)
2479 {
2480         int pos = __sony_nc_gfx_switch_status_get();
2481 
2482         if (pos < 0)
2483                 return pos;
2484 
2485         return snprintf(buffer, PAGE_SIZE, "%s\n",
2486                                         pos == SPEED ? "speed" :
2487                                         pos == STAMINA ? "stamina" :
2488                                         pos == AUTO ? "auto" : "unknown");
2489 }
2490 
2491 static int sony_nc_gfx_switch_setup(struct platform_device *pd,
2492                 unsigned int handle)
2493 {
2494         unsigned int result;
2495 
2496         gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL);
2497         if (!gfxs_ctl)
2498                 return -ENOMEM;
2499 
2500         gfxs_ctl->handle = handle;
2501 
2502         sysfs_attr_init(&gfxs_ctl->attr.attr);
2503         gfxs_ctl->attr.attr.name = "gfx_switch_status";
2504         gfxs_ctl->attr.attr.mode = S_IRUGO;
2505         gfxs_ctl->attr.show = sony_nc_gfx_switch_status_show;
2506 
2507         result = device_create_file(&pd->dev, &gfxs_ctl->attr);
2508         if (result)
2509                 goto gfxerror;
2510 
2511         return 0;
2512 
2513 gfxerror:
2514         kfree(gfxs_ctl);
2515         gfxs_ctl = NULL;
2516 
2517         return result;
2518 }
2519 
2520 static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
2521 {
2522         if (gfxs_ctl) {
2523                 device_remove_file(&pd->dev, &gfxs_ctl->attr);
2524 
2525                 kfree(gfxs_ctl);
2526                 gfxs_ctl = NULL;
2527         }
2528 }
2529 
2530 /* High speed charging function */
2531 static struct device_attribute *hsc_handle;
2532 
2533 static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
2534                 struct device_attribute *attr,
2535                 const char *buffer, size_t count)
2536 {
2537         unsigned int result;
2538         unsigned long value;
2539 
2540         if (count > 31)
2541                 return -EINVAL;
2542 
2543         if (kstrtoul(buffer, 10, &value) || value > 1)
2544                 return -EINVAL;
2545 
2546         if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))
2547                 return -EIO;
2548 
2549         return count;
2550 }
2551 
2552 static ssize_t sony_nc_highspeed_charging_show(struct device *dev,
2553                 struct device_attribute *attr, char *buffer)
2554 {
2555         unsigned int result;
2556 
2557         if (sony_call_snc_handle(0x0131, 0x0100, &result))
2558                 return -EIO;
2559 
2560         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2561 }
2562 
2563 static int sony_nc_highspeed_charging_setup(struct platform_device *pd)
2564 {
2565         unsigned int result;
2566 
2567         if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {
2568                 /* some models advertise the handle but have no implementation
2569                  * for it
2570                  */
2571                 pr_info("No High Speed Charging capability found\n");
2572                 return 0;
2573         }
2574 
2575         hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2576         if (!hsc_handle)
2577                 return -ENOMEM;
2578 
2579         sysfs_attr_init(&hsc_handle->attr);
2580         hsc_handle->attr.name = "battery_highspeed_charging";
2581         hsc_handle->attr.mode = S_IRUGO | S_IWUSR;
2582         hsc_handle->show = sony_nc_highspeed_charging_show;
2583         hsc_handle->store = sony_nc_highspeed_charging_store;
2584 
2585         result = device_create_file(&pd->dev, hsc_handle);
2586         if (result) {
2587                 kfree(hsc_handle);
2588                 hsc_handle = NULL;
2589                 return result;
2590         }
2591 
2592         return 0;
2593 }
2594 
2595 static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
2596 {
2597         if (hsc_handle) {
2598                 device_remove_file(&pd->dev, hsc_handle);
2599                 kfree(hsc_handle);
2600                 hsc_handle = NULL;
2601         }
2602 }
2603 
2604 /* low battery function */
2605 static struct device_attribute *lowbatt_handle;
2606 
2607 static ssize_t sony_nc_lowbatt_store(struct device *dev,
2608                 struct device_attribute *attr,
2609                 const char *buffer, size_t count)
2610 {
2611         unsigned int result;
2612         unsigned long value;
2613 
2614         if (count > 31)
2615                 return -EINVAL;
2616 
2617         if (kstrtoul(buffer, 10, &value) || value > 1)
2618                 return -EINVAL;
2619 
2620         if (sony_call_snc_handle(0x0121, value << 8, &result))
2621                 return -EIO;
2622 
2623         return count;
2624 }
2625 
2626 static ssize_t sony_nc_lowbatt_show(struct device *dev,
2627                 struct device_attribute *attr, char *buffer)
2628 {
2629         unsigned int result;
2630 
2631         if (sony_call_snc_handle(0x0121, 0x0200, &result))
2632                 return -EIO;
2633 
2634         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 1);
2635 }
2636 
2637 static int sony_nc_lowbatt_setup(struct platform_device *pd)
2638 {
2639         unsigned int result;
2640 
2641         lowbatt_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2642         if (!lowbatt_handle)
2643                 return -ENOMEM;
2644 
2645         sysfs_attr_init(&lowbatt_handle->attr);
2646         lowbatt_handle->attr.name = "lowbatt_hibernate";
2647         lowbatt_handle->attr.mode = S_IRUGO | S_IWUSR;
2648         lowbatt_handle->show = sony_nc_lowbatt_show;
2649         lowbatt_handle->store = sony_nc_lowbatt_store;
2650 
2651         result = device_create_file(&pd->dev, lowbatt_handle);
2652         if (result) {
2653                 kfree(lowbatt_handle);
2654                 lowbatt_handle = NULL;
2655                 return result;
2656         }
2657 
2658         return 0;
2659 }
2660 
2661 static void sony_nc_lowbatt_cleanup(struct platform_device *pd)
2662 {
2663         if (lowbatt_handle) {
2664                 device_remove_file(&pd->dev, lowbatt_handle);
2665                 kfree(lowbatt_handle);
2666                 lowbatt_handle = NULL;
2667         }
2668 }
2669 
2670 /* fan speed function */
2671 static struct device_attribute *fan_handle, *hsf_handle;
2672 
2673 static ssize_t sony_nc_hsfan_store(struct device *dev,
2674                 struct device_attribute *attr,
2675                 const char *buffer, size_t count)
2676 {
2677         unsigned int result;
2678         unsigned long value;
2679 
2680         if (count > 31)
2681                 return -EINVAL;
2682 
2683         if (kstrtoul(buffer, 10, &value) || value > 1)
2684                 return -EINVAL;
2685 
2686         if (sony_call_snc_handle(0x0149, value << 0x10 | 0x0200, &result))
2687                 return -EIO;
2688 
2689         return count;
2690 }
2691 
2692 static ssize_t sony_nc_hsfan_show(struct device *dev,
2693                 struct device_attribute *attr, char *buffer)
2694 {
2695         unsigned int result;
2696 
2697         if (sony_call_snc_handle(0x0149, 0x0100, &result))
2698                 return -EIO;
2699 
2700         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2701 }
2702 
2703 static ssize_t sony_nc_fanspeed_show(struct device *dev,
2704                 struct device_attribute *attr, char *buffer)
2705 {
2706         unsigned int result;
2707 
2708         if (sony_call_snc_handle(0x0149, 0x0300, &result))
2709                 return -EIO;
2710 
2711         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0xff);
2712 }
2713 
2714 static int sony_nc_fanspeed_setup(struct platform_device *pd)
2715 {
2716         unsigned int result;
2717 
2718         fan_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2719         if (!fan_handle)
2720                 return -ENOMEM;
2721 
2722         hsf_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2723         if (!hsf_handle) {
2724                 result = -ENOMEM;
2725                 goto out_hsf_handle_alloc;
2726         }
2727 
2728         sysfs_attr_init(&fan_handle->attr);
2729         fan_handle->attr.name = "fanspeed";
2730         fan_handle->attr.mode = S_IRUGO;
2731         fan_handle->show = sony_nc_fanspeed_show;
2732         fan_handle->store = NULL;
2733 
2734         sysfs_attr_init(&hsf_handle->attr);
2735         hsf_handle->attr.name = "fan_forced";
2736         hsf_handle->attr.mode = S_IRUGO | S_IWUSR;
2737         hsf_handle->show = sony_nc_hsfan_show;
2738         hsf_handle->store = sony_nc_hsfan_store;
2739 
2740         result = device_create_file(&pd->dev, fan_handle);
2741         if (result)
2742                 goto out_fan_handle;
2743 
2744         result = device_create_file(&pd->dev, hsf_handle);
2745         if (result)
2746                 goto out_hsf_handle;
2747 
2748         return 0;
2749 
2750 out_hsf_handle:
2751         device_remove_file(&pd->dev, fan_handle);
2752 
2753 out_fan_handle:
2754         kfree(hsf_handle);
2755         hsf_handle = NULL;
2756 
2757 out_hsf_handle_alloc:
2758         kfree(fan_handle);
2759         fan_handle = NULL;
2760         return result;
2761 }
2762 
2763 static void sony_nc_fanspeed_cleanup(struct platform_device *pd)
2764 {
2765         if (fan_handle) {
2766                 device_remove_file(&pd->dev, fan_handle);
2767                 kfree(fan_handle);
2768                 fan_handle = NULL;
2769         }
2770         if (hsf_handle) {
2771                 device_remove_file(&pd->dev, hsf_handle);
2772                 kfree(hsf_handle);
2773                 hsf_handle = NULL;
2774         }
2775 }
2776 
2777 /* USB charge function */
2778 static struct device_attribute *uc_handle;
2779 
2780 static ssize_t sony_nc_usb_charge_store(struct device *dev,
2781                 struct device_attribute *attr,
2782                 const char *buffer, size_t count)
2783 {
2784         unsigned int result;
2785         unsigned long value;
2786 
2787         if (count > 31)
2788                 return -EINVAL;
2789 
2790         if (kstrtoul(buffer, 10, &value) || value > 1)
2791                 return -EINVAL;
2792 
2793         if (sony_call_snc_handle(0x0155, value << 0x10 | 0x0100, &result))
2794                 return -EIO;
2795 
2796         return count;
2797 }
2798 
2799 static ssize_t sony_nc_usb_charge_show(struct device *dev,
2800                 struct device_attribute *attr, char *buffer)
2801 {
2802         unsigned int result;
2803 
2804         if (sony_call_snc_handle(0x0155, 0x0000, &result))
2805                 return -EIO;
2806 
2807         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2808 }
2809 
2810 static int sony_nc_usb_charge_setup(struct platform_device *pd)
2811 {
2812         unsigned int result;
2813 
2814         if (sony_call_snc_handle(0x0155, 0x0000, &result) || !(result & 0x01)) {
2815                 /* some models advertise the handle but have no implementation
2816                  * for it
2817                  */
2818                 pr_info("No USB Charge capability found\n");
2819                 return 0;
2820         }
2821 
2822         uc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2823         if (!uc_handle)
2824                 return -ENOMEM;
2825 
2826         sysfs_attr_init(&uc_handle->attr);
2827         uc_handle->attr.name = "usb_charge";
2828         uc_handle->attr.mode = S_IRUGO | S_IWUSR;
2829         uc_handle->show = sony_nc_usb_charge_show;
2830         uc_handle->store = sony_nc_usb_charge_store;
2831 
2832         result = device_create_file(&pd->dev, uc_handle);
2833         if (result) {
2834                 kfree(uc_handle);
2835                 uc_handle = NULL;
2836                 return result;
2837         }
2838 
2839         return 0;
2840 }
2841 
2842 static void sony_nc_usb_charge_cleanup(struct platform_device *pd)
2843 {
2844         if (uc_handle) {
2845                 device_remove_file(&pd->dev, uc_handle);
2846                 kfree(uc_handle);
2847                 uc_handle = NULL;
2848         }
2849 }
2850 
2851 /* Panel ID function */
2852 static struct device_attribute *panel_handle;
2853 
2854 static ssize_t sony_nc_panelid_show(struct device *dev,
2855                 struct device_attribute *attr, char *buffer)
2856 {
2857         unsigned int result;
2858 
2859         if (sony_call_snc_handle(0x011D, 0x0000, &result))
2860                 return -EIO;
2861 
2862         return snprintf(buffer, PAGE_SIZE, "%d\n", result);
2863 }
2864 
2865 static int sony_nc_panelid_setup(struct platform_device *pd)
2866 {
2867         unsigned int result;
2868 
2869         panel_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2870         if (!panel_handle)
2871                 return -ENOMEM;
2872 
2873         sysfs_attr_init(&panel_handle->attr);
2874         panel_handle->attr.name = "panel_id";
2875         panel_handle->attr.mode = S_IRUGO;
2876         panel_handle->show = sony_nc_panelid_show;
2877         panel_handle->store = NULL;
2878 
2879         result = device_create_file(&pd->dev, panel_handle);
2880         if (result) {
2881                 kfree(panel_handle);
2882                 panel_handle = NULL;
2883                 return result;
2884         }
2885 
2886         return 0;
2887 }
2888 
2889 static void sony_nc_panelid_cleanup(struct platform_device *pd)
2890 {
2891         if (panel_handle) {
2892                 device_remove_file(&pd->dev, panel_handle);
2893                 kfree(panel_handle);
2894                 panel_handle = NULL;
2895         }
2896 }
2897 
2898 /* smart connect function */
2899 static struct device_attribute *sc_handle;
2900 
2901 static ssize_t sony_nc_smart_conn_store(struct device *dev,
2902                 struct device_attribute *attr,
2903                 const char *buffer, size_t count)
2904 {
2905         unsigned int result;
2906         unsigned long value;
2907 
2908         if (count > 31)
2909                 return -EINVAL;
2910 
2911         if (kstrtoul(buffer, 10, &value) || value > 1)
2912                 return -EINVAL;
2913 
2914         if (sony_call_snc_handle(0x0168, value << 0x10, &result))
2915                 return -EIO;
2916 
2917         return count;
2918 }
2919 
2920 static int sony_nc_smart_conn_setup(struct platform_device *pd)
2921 {
2922         unsigned int result;
2923 
2924         sc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2925         if (!sc_handle)
2926                 return -ENOMEM;
2927 
2928         sysfs_attr_init(&sc_handle->attr);
2929         sc_handle->attr.name = "smart_connect";
2930         sc_handle->attr.mode = S_IWUSR;
2931         sc_handle->show = NULL;
2932         sc_handle->store = sony_nc_smart_conn_store;
2933 
2934         result = device_create_file(&pd->dev, sc_handle);
2935         if (result) {
2936                 kfree(sc_handle);
2937                 sc_handle = NULL;
2938                 return result;
2939         }
2940 
2941         return 0;
2942 }
2943 
2944 static void sony_nc_smart_conn_cleanup(struct platform_device *pd)
2945 {
2946         if (sc_handle) {
2947                 device_remove_file(&pd->dev, sc_handle);
2948                 kfree(sc_handle);
2949                 sc_handle = NULL;
2950         }
2951 }
2952 
2953 /* Touchpad enable/disable */
2954 struct touchpad_control {
2955         struct device_attribute attr;
2956         int handle;
2957 };
2958 static struct touchpad_control *tp_ctl;
2959 
2960 static ssize_t sony_nc_touchpad_store(struct device *dev,
2961                 struct device_attribute *attr, const char *buffer, size_t count)
2962 {
2963         unsigned int result;
2964         unsigned long value;
2965 
2966         if (count > 31)
2967                 return -EINVAL;
2968 
2969         if (kstrtoul(buffer, 10, &value) || value > 1)
2970                 return -EINVAL;
2971 
2972         /* sysfs: 0 disabled, 1 enabled
2973          * EC: 0 enabled, 1 disabled
2974          */
2975         if (sony_call_snc_handle(tp_ctl->handle,
2976                                 (!value << 0x10) | 0x100, &result))
2977                 return -EIO;
2978 
2979         return count;
2980 }
2981 
2982 static ssize_t sony_nc_touchpad_show(struct device *dev,
2983                 struct device_attribute *attr, char *buffer)
2984 {
2985         unsigned int result;
2986 
2987         if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))
2988                 return -EINVAL;
2989 
2990         return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01));
2991 }
2992 
2993 static int sony_nc_touchpad_setup(struct platform_device *pd,
2994                 unsigned int handle)
2995 {
2996         int ret = 0;
2997 
2998         tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
2999         if (!tp_ctl)
3000                 return -ENOMEM;
3001 
3002         tp_ctl->handle = handle;
3003 
3004         sysfs_attr_init(&tp_ctl->attr.attr);
3005         tp_ctl->attr.attr.name = "touchpad";
3006         tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
3007         tp_ctl->attr.show = sony_nc_touchpad_show;
3008         tp_ctl->attr.store = sony_nc_touchpad_store;
3009 
3010         ret = device_create_file(&pd->dev, &tp_ctl->attr);
3011         if (ret) {
3012                 kfree(tp_ctl);
3013                 tp_ctl = NULL;
3014         }
3015 
3016         return ret;
3017 }
3018 
3019 static void sony_nc_touchpad_cleanup(struct platform_device *pd)
3020 {
3021         if (tp_ctl) {
3022                 device_remove_file(&pd->dev, &tp_ctl->attr);
3023                 kfree(tp_ctl);
3024                 tp_ctl = NULL;
3025         }
3026 }
3027 
3028 static void sony_nc_backlight_ng_read_limits(int handle,
3029                 struct sony_backlight_props *props)
3030 {
3031         u64 offset;
3032         int i;
3033         int lvl_table_len = 0;
3034         u8 min = 0xff, max = 0x00;
3035         unsigned char buffer[32] = { 0 };
3036 
3037         props->handle = handle;
3038         props->offset = 0;
3039         props->maxlvl = 0xff;
3040 
3041         offset = sony_find_snc_handle(handle);
3042 
3043         /* try to read the boundaries from ACPI tables, if we fail the above
3044          * defaults should be reasonable
3045          */
3046         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
3047                         32);
3048         if (i < 0)
3049                 return;
3050 
3051         switch (handle) {
3052         case 0x012f:
3053         case 0x0137:
3054                 lvl_table_len = 9;
3055                 break;
3056         case 0x143:
3057         case 0x14b:
3058         case 0x14c:
3059                 lvl_table_len = 16;
3060                 break;
3061         }
3062 
3063         /* the buffer lists brightness levels available, brightness levels are
3064          * from position 0 to 8 in the array, other values are used by ALS
3065          * control.
3066          */
3067         for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {
3068 
3069                 dprintk("Brightness level: %d\n", buffer[i]);
3070 
3071                 if (!buffer[i])
3072                         break;
3073 
3074                 if (buffer[i] > max)
3075                         max = buffer[i];
3076                 if (buffer[i] < min)
3077                         min = buffer[i];
3078         }
3079         props->offset = min;
3080         props->maxlvl = max;
3081         dprintk("Brightness levels: min=%d max=%d\n", props->offset,
3082                         props->maxlvl);
3083 }
3084 
3085 static void sony_nc_backlight_setup(void)
3086 {
3087         int max_brightness = 0;
3088         const struct backlight_ops *ops = NULL;
3089         struct backlight_properties props;
3090 
3091         if (sony_find_snc_handle(0x12f) >= 0) {
3092                 ops = &sony_backlight_ng_ops;
3093                 sony_bl_props.cmd_base = 0x0100;
3094                 sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);
3095                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3096 
3097         } else if (sony_find_snc_handle(0x137) >= 0) {
3098                 ops = &sony_backlight_ng_ops;
3099                 sony_bl_props.cmd_base = 0x0100;
3100                 sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);
3101                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3102 
3103         } else if (sony_find_snc_handle(0x143) >= 0) {
3104                 ops = &sony_backlight_ng_ops;
3105                 sony_bl_props.cmd_base = 0x3000;
3106                 sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);
3107                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3108 
3109         } else if (sony_find_snc_handle(0x14b) >= 0) {
3110                 ops = &sony_backlight_ng_ops;
3111                 sony_bl_props.cmd_base = 0x3000;
3112                 sony_nc_backlight_ng_read_limits(0x14b, &sony_bl_props);
3113                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3114 
3115         } else if (sony_find_snc_handle(0x14c) >= 0) {
3116                 ops = &sony_backlight_ng_ops;
3117                 sony_bl_props.cmd_base = 0x3000;
3118                 sony_nc_backlight_ng_read_limits(0x14c, &sony_bl_props);
3119                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
3120 
3121         } else if (acpi_has_method(sony_nc_acpi_handle, "GBRT")) {
3122                 ops = &sony_backlight_ops;
3123                 max_brightness = SONY_MAX_BRIGHTNESS - 1;
3124 
3125         } else
3126                 return;
3127 
3128         memset(&props, 0, sizeof(struct backlight_properties));
3129         props.type = BACKLIGHT_PLATFORM;
3130         props.max_brightness = max_brightness;
3131         sony_bl_props.dev = backlight_device_register("sony", NULL,
3132                                                       &sony_bl_props,
3133                                                       ops, &props);
3134 
3135         if (IS_ERR(sony_bl_props.dev)) {
3136                 pr_warn("unable to register backlight device\n");
3137                 sony_bl_props.dev = NULL;
3138         } else
3139                 sony_bl_props.dev->props.brightness =
3140                         ops->get_brightness(sony_bl_props.dev);
3141 }
3142 
3143 static void sony_nc_backlight_cleanup(void)
3144 {
3145         backlight_device_unregister(sony_bl_props.dev);
3146 }
3147 
3148 static int sony_nc_add(struct acpi_device *device)
3149 {
3150         acpi_status status;
3151         int result = 0;
3152         struct sony_nc_value *item;
3153 
3154         sony_nc_acpi_device = device;
3155         strcpy(acpi_device_class(device), "sony/hotkey");
3156 
3157         sony_nc_acpi_handle = device->handle;
3158 
3159         /* read device status */
3160         result = acpi_bus_get_status(device);
3161         /* bail IFF the above call was successful and the device is not present */
3162         if (!result && !device->status.present) {
3163                 dprintk("Device not present\n");
3164                 result = -ENODEV;
3165                 goto outwalk;
3166         }
3167 
3168         result = sony_pf_add();
3169         if (result)
3170                 goto outpresent;
3171 
3172         if (debug) {
3173                 status = acpi_walk_namespace(ACPI_TYPE_METHOD,
3174                                 sony_nc_acpi_handle, 1, sony_walk_callback,
3175                                 NULL, NULL, NULL);
3176                 if (ACPI_FAILURE(status)) {
3177                         pr_warn("unable to walk acpi resources\n");
3178                         result = -ENODEV;
3179                         goto outpresent;
3180                 }
3181         }
3182 
3183         result = sony_laptop_setup_input(device);
3184         if (result) {
3185                 pr_err("Unable to create input devices\n");
3186                 goto outplatform;
3187         }
3188 
3189         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
3190                 int arg = 1;
3191                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
3192                         dprintk("ECON Method failed\n");
3193         }
3194 
3195         if (acpi_has_method(sony_nc_acpi_handle, "SN00")) {
3196                 dprintk("Doing SNC setup\n");
3197                 /* retrieve the available handles */
3198                 result = sony_nc_handles_setup(sony_pf_device);
3199                 if (!result)
3200                         sony_nc_function_setup(device, sony_pf_device);
3201         }
3202 
3203         if (acpi_video_get_backlight_type() == acpi_backlight_vendor)
3204                 sony_nc_backlight_setup();
3205 
3206         /* create sony_pf sysfs attributes related to the SNC device */
3207         for (item = sony_nc_values; item->name; ++item) {
3208 
3209                 if (!debug && item->debug)
3210                         continue;
3211 
3212                 /* find the available acpiget as described in the DSDT */
3213                 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
3214                         if (acpi_has_method(sony_nc_acpi_handle,
3215                                                         *item->acpiget)) {
3216                                 dprintk("Found %s getter: %s\n",
3217                                                 item->name, *item->acpiget);
3218                                 item->devattr.attr.mode |= S_IRUGO;
3219                                 break;
3220                         }
3221                 }
3222 
3223                 /* find the available acpiset as described in the DSDT */
3224                 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
3225                         if (acpi_has_method(sony_nc_acpi_handle,
3226                                                         *item->acpiset)) {
3227                                 dprintk("Found %s setter: %s\n",
3228                                                 item->name, *item->acpiset);
3229                                 item->devattr.attr.mode |= S_IWUSR;
3230                                 break;
3231                         }
3232                 }
3233 
3234                 if (item->devattr.attr.mode != 0) {
3235                         result =
3236                             device_create_file(&sony_pf_device->dev,
3237                                                &item->devattr);
3238                         if (result)
3239                                 goto out_sysfs;
3240                 }
3241         }
3242 
3243         pr_info("SNC setup done.\n");
3244         return 0;
3245 
3246 out_sysfs:
3247         for (item = sony_nc_values; item->name; ++item) {
3248                 device_remove_file(&sony_pf_device->dev, &item->devattr);
3249         }
3250         sony_nc_backlight_cleanup();
3251         sony_nc_function_cleanup(sony_pf_device);
3252         sony_nc_handles_cleanup(sony_pf_device);
3253 
3254 outplatform:
3255         sony_laptop_remove_input();
3256 
3257 outpresent:
3258         sony_pf_remove();
3259 
3260 outwalk:
3261         sony_nc_rfkill_cleanup();
3262         return result;
3263 }
3264 
3265 static int sony_nc_remove(struct acpi_device *device)
3266 {
3267         struct sony_nc_value *item;
3268 
3269         sony_nc_backlight_cleanup();
3270 
3271         sony_nc_acpi_device = NULL;
3272 
3273         for (item = sony_nc_values; item->name; ++item) {
3274                 device_remove_file(&sony_pf_device->dev, &item->devattr);
3275         }
3276 
3277         sony_nc_function_cleanup(sony_pf_device);
3278         sony_nc_handles_cleanup(sony_pf_device);
3279         sony_pf_remove();
3280         sony_laptop_remove_input();
3281         dprintk(SONY_NC_DRIVER_NAME " removed.\n");
3282 
3283         return 0;
3284 }
3285 
3286 static const struct acpi_device_id sony_device_ids[] = {
3287         {SONY_NC_HID, 0},
3288         {SONY_PIC_HID, 0},
3289         {"", 0},
3290 };
3291 MODULE_DEVICE_TABLE(acpi, sony_device_ids);
3292 
3293 static const struct acpi_device_id sony_nc_device_ids[] = {
3294         {SONY_NC_HID, 0},
3295         {"", 0},
3296 };
3297 
3298 static struct acpi_driver sony_nc_driver = {
3299         .name = SONY_NC_DRIVER_NAME,
3300         .class = SONY_NC_CLASS,
3301         .ids = sony_nc_device_ids,
3302         .owner = THIS_MODULE,
3303         .ops = {
3304                 .add = sony_nc_add,
3305                 .remove = sony_nc_remove,
3306                 .notify = sony_nc_notify,
3307                 },
3308         .drv.pm = &sony_nc_pm,
3309 };
3310 
3311 /*********** SPIC (SNY6001) Device ***********/
3312 
3313 #define SONYPI_DEVICE_TYPE1     0x00000001
3314 #define SONYPI_DEVICE_TYPE2     0x00000002
3315 #define SONYPI_DEVICE_TYPE3     0x00000004
3316 
3317 #define SONYPI_TYPE1_OFFSET     0x04
3318 #define SONYPI_TYPE2_OFFSET     0x12
3319 #define SONYPI_TYPE3_OFFSET     0x12
3320 
3321 struct sony_pic_ioport {
3322         struct acpi_resource_io io1;
3323         struct acpi_resource_io io2;
3324         struct list_head        list;
3325 };
3326 
3327 struct sony_pic_irq {
3328         struct acpi_resource_irq        irq;
3329         struct list_head                list;
3330 };
3331 
3332 struct sonypi_eventtypes {
3333         u8                      data;
3334         unsigned long           mask;
3335         struct sonypi_event     *events;
3336 };
3337 
3338 struct sony_pic_dev {
3339         struct acpi_device              *acpi_dev;
3340         struct sony_pic_irq             *cur_irq;
3341         struct sony_pic_ioport          *cur_ioport;
3342         struct list_head                interrupts;
3343         struct list_head                ioports;
3344         struct mutex                    lock;
3345         struct sonypi_eventtypes        *event_types;
3346         int                             (*handle_irq)(const u8, const u8);
3347         int                             model;
3348         u16                             evport_offset;
3349         u8                              camera_power;
3350         u8                              bluetooth_power;
3351         u8                              wwan_power;
3352 };
3353 
3354 static struct sony_pic_dev spic_dev = {
3355         .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
3356         .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
3357 };
3358 
3359 static int spic_drv_registered;
3360 
3361 /* Event masks */
3362 #define SONYPI_JOGGER_MASK                      0x00000001
3363 #define SONYPI_CAPTURE_MASK                     0x00000002
3364 #define SONYPI_FNKEY_MASK                       0x00000004
3365 #define SONYPI_BLUETOOTH_MASK                   0x00000008
3366 #define SONYPI_PKEY_MASK                        0x00000010
3367 #define SONYPI_BACK_MASK                        0x00000020
3368 #define SONYPI_HELP_MASK                        0x00000040
3369 #define SONYPI_LID_MASK                         0x00000080
3370 #define SONYPI_ZOOM_MASK                        0x00000100
3371 #define SONYPI_THUMBPHRASE_MASK                 0x00000200
3372 #define SONYPI_MEYE_MASK                        0x00000400
3373 #define SONYPI_MEMORYSTICK_MASK                 0x00000800
3374 #define SONYPI_BATTERY_MASK                     0x00001000
3375 #define SONYPI_WIRELESS_MASK                    0x00002000
3376 
3377 struct sonypi_event {
3378         u8      data;
3379         u8      event;
3380 };
3381 
3382 /* The set of possible button release events */
3383 static struct sonypi_event sonypi_releaseev[] = {
3384         { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
3385         { 0, 0 }
3386 };
3387 
3388 /* The set of possible jogger events  */
3389 static struct sonypi_event sonypi_joggerev[] = {
3390         { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
3391         { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
3392         { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
3393         { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
3394         { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
3395         { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
3396         { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
3397         { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
3398         { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
3399         { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
3400         { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
3401         { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
3402         { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
3403         { 0, 0 }
3404 };
3405 
3406 /* The set of possible capture button events */
3407 static struct sonypi_event sonypi_captureev[] = {
3408         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
3409         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
3410         { 0x40, SONYPI_EVENT_CAPTURE_PRESSED },
3411         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
3412         { 0, 0 }
3413 };
3414 
3415 /* The set of possible fnkeys events */
3416 static struct sonypi_event sonypi_fnkeyev[] = {
3417         { 0x10, SONYPI_EVENT_FNKEY_ESC },
3418         { 0x11, SONYPI_EVENT_FNKEY_F1 },
3419         { 0x12, SONYPI_EVENT_FNKEY_F2 },
3420         { 0x13, SONYPI_EVENT_FNKEY_F3 },
3421         { 0x14, SONYPI_EVENT_FNKEY_F4 },
3422         { 0x15, SONYPI_EVENT_FNKEY_F5 },
3423         { 0x16, SONYPI_EVENT_FNKEY_F6 },
3424         { 0x17, SONYPI_EVENT_FNKEY_F7 },
3425         { 0x18, SONYPI_EVENT_FNKEY_F8 },
3426         { 0x19, SONYPI_EVENT_FNKEY_F9 },
3427         { 0x1a, SONYPI_EVENT_FNKEY_F10 },
3428         { 0x1b, SONYPI_EVENT_FNKEY_F11 },
3429         { 0x1c, SONYPI_EVENT_FNKEY_F12 },
3430         { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
3431         { 0x21, SONYPI_EVENT_FNKEY_1 },
3432         { 0x22, SONYPI_EVENT_FNKEY_2 },
3433         { 0x31, SONYPI_EVENT_FNKEY_D },
3434         { 0x32, SONYPI_EVENT_FNKEY_E },
3435         { 0x33, SONYPI_EVENT_FNKEY_F },
3436         { 0x34, SONYPI_EVENT_FNKEY_S },
3437         { 0x35, SONYPI_EVENT_FNKEY_B },
3438         { 0x36, SONYPI_EVENT_FNKEY_ONLY },
3439         { 0, 0 }
3440 };
3441 
3442 /* The set of possible program key events */
3443 static struct sonypi_event sonypi_pkeyev[] = {
3444         { 0x01, SONYPI_EVENT_PKEY_P1 },
3445         { 0x02, SONYPI_EVENT_PKEY_P2 },
3446         { 0x04, SONYPI_EVENT_PKEY_P3 },
3447         { 0x20, SONYPI_EVENT_PKEY_P1 },
3448         { 0, 0 }
3449 };
3450 
3451 /* The set of possible bluetooth events */
3452 static struct sonypi_event sonypi_blueev[] = {
3453         { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
3454         { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
3455         { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
3456         { 0, 0 }
3457 };
3458 
3459 /* The set of possible wireless events */
3460 static struct sonypi_event sonypi_wlessev[] = {
3461         { 0x59, SONYPI_EVENT_IGNORE },
3462         { 0x5a, SONYPI_EVENT_IGNORE },
3463         { 0, 0 }
3464 };
3465 
3466 /* The set of possible back button events */
3467 static struct sonypi_event sonypi_backev[] = {
3468         { 0x20, SONYPI_EVENT_BACK_PRESSED },
3469         { 0, 0 }
3470 };
3471 
3472 /* The set of possible help button events */
3473 static struct sonypi_event sonypi_helpev[] = {
3474         { 0x3b, SONYPI_EVENT_HELP_PRESSED },
3475         { 0, 0 }
3476 };
3477 
3478 
3479 /* The set of possible lid events */
3480 static struct sonypi_event sonypi_lidev[] = {
3481         { 0x51, SONYPI_EVENT_LID_CLOSED },
3482         { 0x50, SONYPI_EVENT_LID_OPENED },
3483         { 0, 0 }
3484 };
3485 
3486 /* The set of possible zoom events */
3487 static struct sonypi_event sonypi_zoomev[] = {
3488         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
3489         { 0x10, SONYPI_EVENT_ZOOM_IN_PRESSED },
3490         { 0x20, SONYPI_EVENT_ZOOM_OUT_PRESSED },
3491         { 0x04, SONYPI_EVENT_ZOOM_PRESSED },
3492         { 0, 0 }
3493 };
3494 
3495 /* The set of possible thumbphrase events */
3496 static struct sonypi_event sonypi_thumbphraseev[] = {
3497         { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
3498         { 0, 0 }
3499 };
3500 
3501 /* The set of possible motioneye camera events */
3502 static struct sonypi_event sonypi_meyeev[] = {
3503         { 0x00, SONYPI_EVENT_MEYE_FACE },
3504         { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
3505         { 0, 0 }
3506 };
3507 
3508 /* The set of possible memorystick events */
3509 static struct sonypi_event sonypi_memorystickev[] = {
3510         { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
3511         { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
3512         { 0, 0 }
3513 };
3514 
3515 /* The set of possible battery events */
3516 static struct sonypi_event sonypi_batteryev[] = {
3517         { 0x20, SONYPI_EVENT_BATTERY_INSERT },
3518         { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
3519         { 0, 0 }
3520 };
3521 
3522 /* The set of possible volume events */
3523 static struct sonypi_event sonypi_volumeev[] = {
3524         { 0x01, SONYPI_EVENT_VOLUME_INC_PRESSED },
3525         { 0x02, SONYPI_EVENT_VOLUME_DEC_PRESSED },
3526         { 0, 0 }
3527 };
3528 
3529 /* The set of possible brightness events */
3530 static struct sonypi_event sonypi_brightnessev[] = {
3531         { 0x80, SONYPI_EVENT_BRIGHTNESS_PRESSED },
3532         { 0, 0 }
3533 };
3534 
3535 static struct sonypi_eventtypes type1_events[] = {
3536         { 0, 0xffffffff, sonypi_releaseev },
3537         { 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
3538         { 0x30, SONYPI_LID_MASK, sonypi_lidev },
3539         { 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
3540         { 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
3541         { 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3542         { 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3543         { 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
3544         { 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3545         { 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
3546         { 0 },
3547 };
3548 static struct sonypi_eventtypes type2_events[] = {
3549         { 0, 0xffffffff, sonypi_releaseev },
3550         { 0x38, SONYPI_LID_MASK, sonypi_lidev },
3551         { 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
3552         { 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
3553         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3554         { 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3555         { 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
3556         { 0x11, SONYPI_BACK_MASK, sonypi_backev },
3557         { 0x21, SONYPI_HELP_MASK, sonypi_helpev },
3558         { 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
3559         { 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
3560         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3561         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3562         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3563         { 0 },
3564 };
3565 static struct sonypi_eventtypes type3_events[] = {
3566         { 0, 0xffffffff, sonypi_releaseev },
3567         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3568         { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
3569         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3570         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3571         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3572         { 0x05, SONYPI_PKEY_MASK, sonypi_pkeyev },
3573         { 0x05, SONYPI_ZOOM_MASK, sonypi_zoomev },
3574         { 0x05, SONYPI_CAPTURE_MASK, sonypi_captureev },
3575         { 0x05, SONYPI_PKEY_MASK, sonypi_volumeev },
3576         { 0x05, SONYPI_PKEY_MASK, sonypi_brightnessev },
3577         { 0 },
3578 };
3579 
3580 /* low level spic calls */
3581 #define ITERATIONS_LONG         10000
3582 #define ITERATIONS_SHORT        10
3583 #define wait_on_command(command, iterations) {                          \
3584         unsigned int n = iterations;                                    \
3585         while (--n && (command))                                        \
3586                 udelay(1);                                              \
3587         if (!n)                                                         \
3588                 dprintk("command failed at %s : %s (line %d)\n",        \
3589                                 __FILE__, __func__, __LINE__);  \
3590 }
3591 
3592 static u8 sony_pic_call1(u8 dev)
3593 {
3594         u8 v1, v2;
3595 
3596         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3597                         ITERATIONS_LONG);
3598         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3599         v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
3600         v2 = inb_p(spic_dev.cur_ioport->io1.minimum);
3601         dprintk("sony_pic_call1(0x%.2x): 0x%.4x\n", dev, (v2 << 8) | v1);
3602         return v2;
3603 }
3604 
3605 static u8 sony_pic_call2(u8 dev, u8 fn)
3606 {
3607         u8 v1;
3608 
3609         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3610                         ITERATIONS_LONG);
3611         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3612         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3613                         ITERATIONS_LONG);
3614         outb(fn, spic_dev.cur_ioport->io1.minimum);
3615         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3616         dprintk("sony_pic_call2(0x%.2x - 0x%.2x): 0x%.4x\n", dev, fn, v1);
3617         return v1;
3618 }
3619 
3620 static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
3621 {
3622         u8 v1;
3623 
3624         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3625         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3626         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3627         outb(fn, spic_dev.cur_ioport->io1.minimum);
3628         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3629         outb(v, spic_dev.cur_ioport->io1.minimum);
3630         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3631         dprintk("sony_pic_call3(0x%.2x - 0x%.2x - 0x%.2x): 0x%.4x\n",
3632                         dev, fn, v, v1);
3633         return v1;
3634 }
3635 
3636 /*
3637  * minidrivers for SPIC models
3638  */
3639 static int type3_handle_irq(const u8 data_mask, const u8 ev)
3640 {
3641         /*
3642          * 0x31 could mean we have to take some extra action and wait for
3643          * the next irq for some Type3 models, it will generate a new
3644          * irq and we can read new data from the device:
3645          *  - 0x5c and 0x5f requires 0xA0
3646          *  - 0x61 requires 0xB3
3647          */
3648         if (data_mask == 0x31) {
3649                 if (ev == 0x5c || ev == 0x5f)
3650                         sony_pic_call1(0xA0);
3651                 else if (ev == 0x61)
3652                         sony_pic_call1(0xB3);
3653                 return 0;
3654         }
3655         return 1;
3656 }
3657 
3658 static void sony_pic_detect_device_type(struct sony_pic_dev *dev)
3659 {
3660         struct pci_dev *pcidev;
3661 
3662         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3663                         PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
3664         if (pcidev) {
3665                 dev->model = SONYPI_DEVICE_TYPE1;
3666                 dev->evport_offset = SONYPI_TYPE1_OFFSET;
3667                 dev->event_types = type1_events;
3668                 goto out;
3669         }
3670 
3671         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3672                         PCI_DEVICE_ID_INTEL_ICH6_1, NULL);
3673         if (pcidev) {
3674                 dev->model = SONYPI_DEVICE_TYPE2;
3675                 dev->evport_offset = SONYPI_TYPE2_OFFSET;
3676                 dev->event_types = type2_events;
3677                 goto out;
3678         }
3679 
3680         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3681                         PCI_DEVICE_ID_INTEL_ICH7_1, NULL);
3682         if (pcidev) {
3683                 dev->model = SONYPI_DEVICE_TYPE3;
3684                 dev->handle_irq = type3_handle_irq;
3685                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3686                 dev->event_types = type3_events;
3687                 goto out;
3688         }
3689 
3690         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3691                         PCI_DEVICE_ID_INTEL_ICH8_4, NULL);
3692         if (pcidev) {
3693                 dev->model = SONYPI_DEVICE_TYPE3;
3694                 dev->handle_irq = type3_handle_irq;
3695                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3696                 dev->event_types = type3_events;
3697                 goto out;
3698         }
3699 
3700         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3701                         PCI_DEVICE_ID_INTEL_ICH9_1, NULL);
3702         if (pcidev) {
3703                 dev->model = SONYPI_DEVICE_TYPE3;
3704                 dev->handle_irq = type3_handle_irq;
3705                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3706                 dev->event_types = type3_events;
3707                 goto out;
3708         }
3709 
3710         /* default */
3711         dev->model = SONYPI_DEVICE_TYPE2;
3712         dev->evport_offset = SONYPI_TYPE2_OFFSET;
3713         dev->event_types = type2_events;
3714 
3715 out:
3716         pci_dev_put(pcidev);
3717 
3718         pr_info("detected Type%d model\n",
3719                 dev->model == SONYPI_DEVICE_TYPE1 ? 1 :
3720                 dev->model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
3721 }
3722 
3723 /* camera tests and poweron/poweroff */
3724 #define SONYPI_CAMERA_PICTURE           5
3725 #define SONYPI_CAMERA_CONTROL           0x10
3726 
3727 #define SONYPI_CAMERA_BRIGHTNESS                0
3728 #define SONYPI_CAMERA_CONTRAST                  1
3729 #define SONYPI_CAMERA_HUE                       2
3730 #define SONYPI_CAMERA_COLOR                     3
3731 #define SONYPI_CAMERA_SHARPNESS                 4
3732 
3733 #define SONYPI_CAMERA_EXPOSURE_MASK             0xC
3734 #define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
3735 #define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
3736 #define SONYPI_CAMERA_MUTE_MASK                 0x40
3737 
3738 /* the rest don't need a loop until not 0xff */
3739 #define SONYPI_CAMERA_AGC                       6
3740 #define SONYPI_CAMERA_AGC_MASK                  0x30
3741 #define SONYPI_CAMERA_SHUTTER_MASK              0x7
3742 
3743 #define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
3744 #define SONYPI_CAMERA_CONTROL                   0x10
3745 
3746 #define SONYPI_CAMERA_STATUS                    7
3747 #define SONYPI_CAMERA_STATUS_READY              0x2
3748 #define SONYPI_CAMERA_STATUS_POSITION           0x4
3749 
3750 #define SONYPI_DIRECTION_BACKWARDS              0x4
3751 
3752 #define SONYPI_CAMERA_REVISION                  8
3753 #define SONYPI_CAMERA_ROMVERSION                9
3754 
3755 static int __sony_pic_camera_ready(void)
3756 {
3757         u8 v;
3758 
3759         v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
3760         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
3761 }
3762 
3763 static int __sony_pic_camera_off(void)
3764 {
3765         if (!camera) {
3766                 pr_warn("camera control not enabled\n");
3767                 return -ENODEV;
3768         }
3769 
3770         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
3771                                 SONYPI_CAMERA_MUTE_MASK),
3772                         ITERATIONS_SHORT);
3773 
3774         if (spic_dev.camera_power) {
3775                 sony_pic_call2(0x91, 0);
3776                 spic_dev.camera_power = 0;
3777         }
3778         return 0;
3779 }
3780 
3781 static int __sony_pic_camera_on(void)
3782 {
3783         int i, j, x;
3784 
3785         if (!camera) {
3786                 pr_warn("camera control not enabled\n");
3787                 return -ENODEV;
3788         }
3789 
3790         if (spic_dev.camera_power)
3791                 return 0;
3792 
3793         for (j = 5; j > 0; j--) {
3794 
3795                 for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
3796                         msleep(10);
3797                 sony_pic_call1(0x93);
3798 
3799                 for (i = 400; i > 0; i--) {
3800                         if (__sony_pic_camera_ready())
3801                                 break;
3802                         msleep(10);
3803                 }
3804                 if (i)
3805                         break;
3806         }
3807 
3808         if (j == 0) {
3809                 pr_warn("failed to power on camera\n");
3810                 return -ENODEV;
3811         }
3812 
3813         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
3814                                 0x5a),
3815                         ITERATIONS_SHORT);
3816 
3817         spic_dev.camera_power = 1;
3818         return 0;
3819 }
3820 
3821 /* External camera command (exported to the motion eye v4l driver) */
3822 int sony_pic_camera_command(int command, u8 value)
3823 {
3824         if (!camera)
3825                 return -EIO;
3826 
3827         mutex_lock(&spic_dev.lock);
3828 
3829         switch (command) {
3830         case SONY_PIC_COMMAND_SETCAMERA:
3831                 if (value)
3832                         __sony_pic_camera_on();
3833                 else
3834                         __sony_pic_camera_off();
3835                 break;
3836         case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
3837                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
3838                                 ITERATIONS_SHORT);
3839                 break;
3840         case SONY_PIC_COMMAND_SETCAMERACONTRAST:
3841                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
3842                                 ITERATIONS_SHORT);
3843                 break;
3844         case SONY_PIC_COMMAND_SETCAMERAHUE:
3845                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
3846                                 ITERATIONS_SHORT);
3847                 break;
3848         case SONY_PIC_COMMAND_SETCAMERACOLOR:
3849                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
3850                                 ITERATIONS_SHORT);
3851                 break;
3852         case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
3853                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
3854                                 ITERATIONS_SHORT);
3855                 break;
3856         case SONY_PIC_COMMAND_SETCAMERAPICTURE:
3857                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
3858                                 ITERATIONS_SHORT);
3859                 break;
3860         case SONY_PIC_COMMAND_SETCAMERAAGC:
3861                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
3862                                 ITERATIONS_SHORT);
3863                 break;
3864         default:
3865                 pr_err("sony_pic_camera_command invalid: %d\n", command);
3866                 break;
3867         }
3868         mutex_unlock(&spic_dev.lock);
3869         return 0;
3870 }
3871 EXPORT_SYMBOL(sony_pic_camera_command);
3872 
3873 /* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
3874 static void __sony_pic_set_wwanpower(u8 state)
3875 {
3876         state = !!state;
3877         if (spic_dev.wwan_power == state)
3878                 return;
3879         sony_pic_call2(0xB0, state);
3880         sony_pic_call1(0x82);
3881         spic_dev.wwan_power = state;
3882 }
3883 
3884 static ssize_t sony_pic_wwanpower_store(struct device *dev,
3885                 struct device_attribute *attr,
3886                 const char *buffer, size_t count)
3887 {
3888         unsigned long value;
3889         if (count > 31)
3890                 return -EINVAL;
3891 
3892         if (kstrtoul(buffer, 10, &value))
3893                 return -EINVAL;
3894 
3895         mutex_lock(&spic_dev.lock);
3896         __sony_pic_set_wwanpower(value);
3897         mutex_unlock(&spic_dev.lock);
3898 
3899         return count;
3900 }
3901 
3902 static ssize_t sony_pic_wwanpower_show(struct device *dev,
3903                 struct device_attribute *attr, char *buffer)
3904 {
3905         ssize_t count;
3906         mutex_lock(&spic_dev.lock);
3907         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
3908         mutex_unlock(&spic_dev.lock);
3909         return count;
3910 }
3911 
3912 /* bluetooth subsystem power state */
3913 static void __sony_pic_set_bluetoothpower(u8 state)
3914 {
3915         state = !!state;
3916         if (spic_dev.bluetooth_power == state)
3917                 return;
3918         sony_pic_call2(0x96, state);
3919         sony_pic_call1(0x82);
3920         spic_dev.bluetooth_power = state;
3921 }
3922 
3923 static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
3924                 struct device_attribute *attr,
3925                 const char *buffer, size_t count)
3926 {
3927         unsigned long value;
3928         if (count > 31)
3929                 return -EINVAL;
3930 
3931         if (kstrtoul(buffer, 10, &value))
3932                 return -EINVAL;
3933 
3934         mutex_lock(&spic_dev.lock);
3935         __sony_pic_set_bluetoothpower(value);
3936         mutex_unlock(&spic_dev.lock);
3937 
3938         return count;
3939 }
3940 
3941 static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
3942                 struct device_attribute *attr, char *buffer)
3943 {
3944         ssize_t count = 0;
3945         mutex_lock(&spic_dev.lock);
3946         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
3947         mutex_unlock(&spic_dev.lock);
3948         return count;
3949 }
3950 
3951 /* fan speed */
3952 /* FAN0 information (reverse engineered from ACPI tables) */
3953 #define SONY_PIC_FAN0_STATUS    0x93
3954 static int sony_pic_set_fanspeed(unsigned long value)
3955 {
3956         return ec_write(SONY_PIC_FAN0_STATUS, value);
3957 }
3958 
3959 static int sony_pic_get_fanspeed(u8 *value)
3960 {
3961         return ec_read(SONY_PIC_FAN0_STATUS, value);
3962 }
3963 
3964 static ssize_t sony_pic_fanspeed_store(struct device *dev,
3965                 struct device_attribute *attr,
3966                 const char *buffer, size_t count)
3967 {
3968         unsigned long value;
3969         if (count > 31)
3970                 return -EINVAL;
3971 
3972         if (kstrtoul(buffer, 10, &value))
3973                 return -EINVAL;
3974 
3975         if (sony_pic_set_fanspeed(value))
3976                 return -EIO;
3977 
3978         return count;
3979 }
3980 
3981 static ssize_t sony_pic_fanspeed_show(struct device *dev,
3982                 struct device_attribute *attr, char *buffer)
3983 {
3984         u8 value = 0;
3985         if (sony_pic_get_fanspeed(&value))
3986                 return -EIO;
3987 
3988         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
3989 }
3990 
3991 #define SPIC_ATTR(_name, _mode)                                 \
3992 struct device_attribute spic_attr_##_name = __ATTR(_name,       \
3993                 _mode, sony_pic_## _name ##_show,               \
3994                 sony_pic_## _name ##_store)
3995 
3996 static SPIC_ATTR(bluetoothpower, 0644);
3997 static SPIC_ATTR(wwanpower, 0644);
3998 static SPIC_ATTR(fanspeed, 0644);
3999 
4000 static struct attribute *spic_attributes[] = {
4001         &spic_attr_bluetoothpower.attr,
4002         &spic_attr_wwanpower.attr,
4003         &spic_attr_fanspeed.attr,
4004         NULL
4005 };
4006 
4007 static struct attribute_group spic_attribute_group = {
4008         .attrs = spic_attributes
4009 };
4010 
4011 /******** SONYPI compatibility **********/
4012 #ifdef CONFIG_SONYPI_COMPAT
4013 
4014 /* battery / brightness / temperature  addresses */
4015 #define SONYPI_BAT_FLAGS        0x81
4016 #define SONYPI_LCD_LIGHT        0x96
4017 #define SONYPI_BAT1_PCTRM       0xa0
4018 #define SONYPI_BAT1_LEFT        0xa2
4019 #define SONYPI_BAT1_MAXRT       0xa4
4020 #define SONYPI_BAT2_PCTRM       0xa8
4021 #define SONYPI_BAT2_LEFT        0xaa
4022 #define SONYPI_BAT2_MAXRT       0xac
4023 #define SONYPI_BAT1_MAXTK       0xb0
4024 #define SONYPI_BAT1_FULL        0xb2
4025 #define SONYPI_BAT2_MAXTK       0xb8
4026 #define SONYPI_BAT2_FULL        0xba
4027 #define SONYPI_TEMP_STATUS      0xC1
4028 
4029 struct sonypi_compat_s {
4030         struct fasync_struct    *fifo_async;
4031         struct kfifo            fifo;
4032         spinlock_t              fifo_lock;
4033         wait_queue_head_t       fifo_proc_list;
4034         atomic_t                open_count;
4035 };
4036 static struct sonypi_compat_s sonypi_compat = {
4037         .open_count = ATOMIC_INIT(0),
4038 };
4039 
4040 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
4041 {
4042         return fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
4043 }
4044 
4045 static int sonypi_misc_release(struct inode *inode, struct file *file)
4046 {
4047         atomic_dec(&sonypi_compat.open_count);
4048         return 0;
4049 }
4050 
4051 static int sonypi_misc_open(struct inode *inode, struct file *file)
4052 {
4053         /* Flush input queue on first open */
4054         unsigned long flags;
4055 
4056         spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
4057 
4058         if (atomic_inc_return(&sonypi_compat.open_count) == 1)
4059                 kfifo_reset(&sonypi_compat.fifo);
4060 
4061         spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
4062 
4063         return 0;
4064 }
4065 
4066 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
4067                                 size_t count, loff_t *pos)
4068 {
4069         ssize_t ret;
4070         unsigned char c;
4071 
4072         if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
4073             (file->f_flags & O_NONBLOCK))
4074                 return -EAGAIN;
4075 
4076         ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
4077                                        kfifo_len(&sonypi_compat.fifo) != 0);
4078         if (ret)
4079                 return ret;
4080 
4081         while (ret < count &&
4082                (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
4083                           &sonypi_compat.fifo_lock) == sizeof(c))) {
4084                 if (put_user(c, buf++))
4085                         return -EFAULT;
4086                 ret++;
4087         }
4088 
4089         if (ret > 0) {
4090                 struct inode *inode = file_inode(file);
4091                 inode->i_atime = current_fs_time(inode->i_sb);
4092         }
4093 
4094         return ret;
4095 }
4096 
4097 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
4098 {
4099         poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
4100         if (kfifo_len(&sonypi_compat.fifo))
4101                 return POLLIN | POLLRDNORM;
4102         return 0;
4103 }
4104 
4105 static int ec_read16(u8 addr, u16 *value)
4106 {
4107         u8 val_lb, val_hb;
4108         if (ec_read(addr, &val_lb))
4109                 return -1;
4110         if (ec_read(addr + 1, &val_hb))
4111                 return -1;
4112         *value = val_lb | (val_hb << 8);
4113         return 0;
4114 }
4115 
4116 static long sonypi_misc_ioctl(struct file *fp, unsigned int cmd,
4117                                                         unsigned long arg)
4118 {
4119         int ret = 0;
4120         void __user *argp = (void __user *)arg;
4121         u8 val8;
4122         u16 val16;
4123         int value;
4124 
4125         mutex_lock(&spic_dev.lock);
4126         switch (cmd) {
4127         case SONYPI_IOCGBRT:
4128                 if (sony_bl_props.dev == NULL) {
4129                         ret = -EIO;
4130                         break;
4131                 }
4132                 if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL,
4133                                         &value)) {
4134                         ret = -EIO;
4135                         break;
4136                 }
4137                 val8 = ((value & 0xff) - 1) << 5;
4138                 if (copy_to_user(argp, &val8, sizeof(val8)))
4139                                 ret = -EFAULT;
4140                 break;
4141         case SONYPI_IOCSBRT:
4142                 if (sony_bl_props.dev == NULL) {
4143                         ret = -EIO;
4144                         break;
4145                 }
4146                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4147                         ret = -EFAULT;
4148                         break;
4149                 }
4150                 value = (val8 >> 5) + 1;
4151                 if (sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &value,
4152                                         NULL)) {
4153                         ret = -EIO;
4154                         break;
4155                 }
4156                 /* sync the backlight device status */
4157                 sony_bl_props.dev->props.brightness =
4158                     sony_backlight_get_brightness(sony_bl_props.dev);
4159                 break;
4160         case SONYPI_IOCGBAT1CAP:
4161                 if (ec_read16(SONYPI_BAT1_FULL, &val16)) {
4162                         ret = -EIO;
4163                         break;
4164                 }
4165                 if (copy_to_user(argp, &val16, sizeof(val16)))
4166                         ret = -EFAULT;
4167                 break;
4168         case SONYPI_IOCGBAT1REM:
4169                 if (ec_read16(SONYPI_BAT1_LEFT, &val16)) {
4170                         ret = -EIO;
4171                         break;
4172                 }
4173                 if (copy_to_user(argp, &val16, sizeof(val16)))
4174                         ret = -EFAULT;
4175                 break;
4176         case SONYPI_IOCGBAT2CAP:
4177                 if (ec_read16(SONYPI_BAT2_FULL, &val16)) {
4178                         ret = -EIO;
4179                         break;
4180                 }
4181                 if (copy_to_user(argp, &val16, sizeof(val16)))
4182                         ret = -EFAULT;
4183                 break;
4184         case SONYPI_IOCGBAT2REM:
4185                 if (ec_read16(SONYPI_BAT2_LEFT, &val16)) {
4186                         ret = -EIO;
4187                         break;
4188                 }
4189                 if (copy_to_user(argp, &val16, sizeof(val16)))
4190                         ret = -EFAULT;
4191                 break;
4192         case SONYPI_IOCGBATFLAGS:
4193                 if (ec_read(SONYPI_BAT_FLAGS, &val8)) {
4194                         ret = -EIO;
4195                         break;
4196                 }
4197                 val8 &= 0x07;
4198                 if (copy_to_user(argp, &val8, sizeof(val8)))
4199                         ret = -EFAULT;
4200                 break;
4201         case SONYPI_IOCGBLUE:
4202                 val8 = spic_dev.bluetooth_power;
4203                 if (copy_to_user(argp, &val8, sizeof(val8)))
4204                         ret = -EFAULT;
4205                 break;
4206         case SONYPI_IOCSBLUE:
4207                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4208                         ret = -EFAULT;
4209                         break;
4210                 }
4211                 __sony_pic_set_bluetoothpower(val8);
4212                 break;
4213         /* FAN Controls */
4214         case SONYPI_IOCGFAN:
4215                 if (sony_pic_get_fanspeed(&val8)) {
4216                         ret = -EIO;
4217                         break;
4218                 }
4219                 if (copy_to_user(argp, &val8, sizeof(val8)))
4220                         ret = -EFAULT;
4221                 break;
4222         case SONYPI_IOCSFAN:
4223                 if (copy_from_user(&val8, argp, sizeof(val8))) {
4224                         ret = -EFAULT;
4225                         break;
4226                 }
4227                 if (sony_pic_set_fanspeed(val8))
4228                         ret = -EIO;
4229                 break;
4230         /* GET Temperature (useful under APM) */
4231         case SONYPI_IOCGTEMP:
4232                 if (ec_read(SONYPI_TEMP_STATUS, &val8)) {
4233                         ret = -EIO;
4234                         break;
4235                 }
4236                 if (copy_to_user(argp, &val8, sizeof(val8)))
4237                         ret = -EFAULT;
4238                 break;
4239         default:
4240                 ret = -EINVAL;
4241         }
4242         mutex_unlock(&spic_dev.lock);
4243         return ret;
4244 }
4245 
4246 static const struct file_operations sonypi_misc_fops = {
4247         .owner          = THIS_MODULE,
4248         .read           = sonypi_misc_read,
4249         .poll           = sonypi_misc_poll,
4250         .open           = sonypi_misc_open,
4251         .release        = sonypi_misc_release,
4252         .fasync         = sonypi_misc_fasync,
4253         .unlocked_ioctl = sonypi_misc_ioctl,
4254         .llseek         = noop_llseek,
4255 };
4256 
4257 static struct miscdevice sonypi_misc_device = {
4258         .minor          = MISC_DYNAMIC_MINOR,
4259         .name           = "sonypi",
4260         .fops           = &sonypi_misc_fops,
4261 };
4262 
4263 static void sonypi_compat_report_event(u8 event)
4264 {
4265         kfifo_in_locked(&sonypi_compat.fifo, (unsigned char *)&event,
4266                         sizeof(event), &sonypi_compat.fifo_lock);
4267         kill_fasync(&sonypi_compat.fifo_async, SIGIO, POLL_IN);
4268         wake_up_interruptible(&sonypi_compat.fifo_proc_list);
4269 }
4270 
4271 static int sonypi_compat_init(void)
4272 {
4273         int error;
4274 
4275         spin_lock_init(&sonypi_compat.fifo_lock);
4276         error =
4277          kfifo_alloc(&sonypi_compat.fifo, SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
4278         if (error) {
4279                 pr_err("kfifo_alloc failed\n");
4280                 return error;
4281         }
4282 
4283         init_waitqueue_head(&sonypi_compat.fifo_proc_list);
4284 
4285         if (minor != -1)
4286                 sonypi_misc_device.minor = minor;
4287         error = misc_register(&sonypi_misc_device);
4288         if (error) {
4289                 pr_err("misc_register failed\n");
4290                 goto err_free_kfifo;
4291         }
4292         if (minor == -1)
4293                 pr_info("device allocated minor is %d\n",
4294                         sonypi_misc_device.minor);
4295 
4296         return 0;
4297 
4298 err_free_kfifo:
4299         kfifo_free(&sonypi_compat.fifo);
4300         return error;
4301 }
4302 
4303 static void sonypi_compat_exit(void)
4304 {
4305         misc_deregister(&sonypi_misc_device);
4306         kfifo_free(&sonypi_compat.fifo);
4307 }
4308 #else
4309 static int sonypi_compat_init(void) { return 0; }
4310 static void sonypi_compat_exit(void) { }
4311 static void sonypi_compat_report_event(u8 event) { }
4312 #endif /* CONFIG_SONYPI_COMPAT */
4313 
4314 /*
4315  * ACPI callbacks
4316  */
4317 static acpi_status
4318 sony_pic_read_possible_resource(struct acpi_resource *resource, void *context)
4319 {
4320         u32 i;
4321         struct sony_pic_dev *dev = (struct sony_pic_dev *)context;
4322 
4323         switch (resource->type) {
4324         case ACPI_RESOURCE_TYPE_START_DEPENDENT:
4325                 {
4326                         /* start IO enumeration */
4327                         struct sony_pic_ioport *ioport = kzalloc(sizeof(*ioport), GFP_KERNEL);
4328                         if (!ioport)
4329                                 return AE_ERROR;
4330 
4331                         list_add(&ioport->list, &dev->ioports);
4332                         return AE_OK;
4333                 }
4334 
4335         case ACPI_RESOURCE_TYPE_END_DEPENDENT:
4336                 /* end IO enumeration */
4337                 return AE_OK;
4338 
4339         case ACPI_RESOURCE_TYPE_IRQ:
4340                 {
4341                         struct acpi_resource_irq *p = &resource->data.irq;
4342                         struct sony_pic_irq *interrupt = NULL;
4343                         if (!p || !p->interrupt_count) {
4344                                 /*
4345                                  * IRQ descriptors may have no IRQ# bits set,
4346                                  * particularly those those w/ _STA disabled
4347                                  */
4348                                 dprintk("Blank IRQ resource\n");
4349                                 return AE_OK;
4350                         }
4351                         for (i = 0; i < p->interrupt_count; i++) {
4352                                 if (!p->interrupts[i]) {
4353                                         pr_warn("Invalid IRQ %d\n",
4354                                                 p->interrupts[i]);
4355                                         continue;
4356                                 }
4357                                 interrupt = kzalloc(sizeof(*interrupt),
4358                                                 GFP_KERNEL);
4359                                 if (!interrupt)
4360                                         return AE_ERROR;
4361 
4362                                 list_add(&interrupt->list, &dev->interrupts);
4363                                 interrupt->irq.triggering = p->triggering;
4364                                 interrupt->irq.polarity = p->polarity;
4365                                 interrupt->irq.sharable = p->sharable;
4366                                 interrupt->irq.interrupt_count = 1;
4367                                 interrupt->irq.interrupts[0] = p->interrupts[i];
4368                         }
4369                         return AE_OK;
4370                 }
4371         case ACPI_RESOURCE_TYPE_IO:
4372                 {
4373                         struct acpi_resource_io *io = &resource->data.io;
4374                         struct sony_pic_ioport *ioport =
4375                                 list_first_entry(&dev->ioports, struct sony_pic_ioport, list);
4376                         if (!io) {
4377                                 dprintk("Blank IO resource\n");
4378                                 return AE_OK;
4379                         }
4380 
4381                         if (!ioport->io1.minimum) {
4382                                 memcpy(&ioport->io1, io, sizeof(*io));
4383                                 dprintk("IO1 at 0x%.4x (0x%.2x)\n", ioport->io1.minimum,
4384                                                 ioport->io1.address_length);
4385                         }
4386                         else if (!ioport->io2.minimum) {
4387                                 memcpy(&ioport->io2, io, sizeof(*io));
4388                                 dprintk("IO2 at 0x%.4x (0x%.2x)\n", ioport->io2.minimum,
4389                                                 ioport->io2.address_length);
4390                         }
4391                         else {
4392                                 pr_err("Unknown SPIC Type, more than 2 IO Ports\n");
4393                                 return AE_ERROR;
4394                         }
4395                         return AE_OK;
4396                 }
4397         default:
4398                 dprintk("Resource %d isn't an IRQ nor an IO port\n",
4399                         resource->type);
4400 
4401         case ACPI_RESOURCE_TYPE_END_TAG:
4402                 return AE_OK;
4403         }
4404         return AE_CTRL_TERMINATE;
4405 }
4406 
4407 static int sony_pic_possible_resources(struct acpi_device *device)
4408 {
4409         int result = 0;
4410         acpi_status status = AE_OK;
4411 
4412         if (!device)
4413                 return -EINVAL;
4414 
4415         /* get device status */
4416         /* see acpi_pci_link_get_current acpi_pci_link_get_possible */
4417         dprintk("Evaluating _STA\n");
4418         result = acpi_bus_get_status(device);
4419         if (result) {
4420                 pr_warn("Unable to read status\n");
4421                 goto end;
4422         }
4423 
4424         if (!device->status.enabled)
4425                 dprintk("Device disabled\n");
4426         else
4427                 dprintk("Device enabled\n");
4428 
4429         /*
4430          * Query and parse 'method'
4431          */
4432         dprintk("Evaluating %s\n", METHOD_NAME__PRS);
4433         status = acpi_walk_resources(device->handle, METHOD_NAME__PRS,
4434                         sony_pic_read_possible_resource, &spic_dev);
4435         if (ACPI_FAILURE(status)) {
4436                 pr_warn("Failure evaluating %s\n", METHOD_NAME__PRS);
4437                 result = -ENODEV;
4438         }
4439 end:
4440         return result;
4441 }
4442 
4443 /*
4444  *  Disable the spic device by calling its _DIS method
4445  */
4446 static int sony_pic_disable(struct acpi_device *device)
4447 {
4448         acpi_status ret = acpi_evaluate_object(device->handle, "_DIS", NULL,
4449                                                NULL);
4450 
4451         if (ACPI_FAILURE(ret) && ret != AE_NOT_FOUND)
4452                 return -ENXIO;
4453 
4454         dprintk("Device disabled\n");
4455         return 0;
4456 }
4457 
4458 
4459 /*
4460  *  Based on drivers/acpi/pci_link.c:acpi_pci_link_set
4461  *
4462  *  Call _SRS to set current resources
4463  */
4464 static int sony_pic_enable(struct acpi_device *device,
4465                 struct sony_pic_ioport *ioport, struct sony_pic_irq *irq)
4466 {
4467         acpi_status status;
4468         int result = 0;
4469         /* Type 1 resource layout is:
4470          *    IO
4471          *    IO
4472          *    IRQNoFlags
4473          *    End
4474          *
4475          * Type 2 and 3 resource layout is:
4476          *    IO
4477          *    IRQNoFlags
4478          *    End
4479          */
4480         struct {
4481                 struct acpi_resource res1;
4482                 struct acpi_resource res2;
4483                 struct acpi_resource res3;
4484                 struct acpi_resource res4;
4485         } *resource;
4486         struct acpi_buffer buffer = { 0, NULL };
4487 
4488         if (!ioport || !irq)
4489                 return -EINVAL;
4490 
4491         /* init acpi_buffer */
4492         resource = kzalloc(sizeof(*resource) + 1, GFP_KERNEL);
4493         if (!resource)
4494                 return -ENOMEM;
4495 
4496         buffer.length = sizeof(*resource) + 1;
4497         buffer.pointer = resource;
4498 
4499         /* setup Type 1 resources */
4500         if (spic_dev.model == SONYPI_DEVICE_TYPE1) {
4501 
4502                 /* setup io resources */
4503                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
4504                 resource->res1.length = sizeof(struct acpi_resource);
4505                 memcpy(&resource->res1.data.io, &ioport->io1,
4506                                 sizeof(struct acpi_resource_io));
4507 
4508                 resource->res2.type = ACPI_RESOURCE_TYPE_IO;
4509                 resource->res2.length = sizeof(struct acpi_resource);
4510                 memcpy(&resource->res2.data.io, &ioport->io2,
4511                                 sizeof(struct acpi_resource_io));
4512 
4513                 /* setup irq resource */
4514                 resource->res3.type = ACPI_RESOURCE_TYPE_IRQ;
4515                 resource->res3.length = sizeof(struct acpi_resource);
4516                 memcpy(&resource->res3.data.irq, &irq->irq,
4517                                 sizeof(struct acpi_resource_irq));
4518                 /* we requested a shared irq */
4519                 resource->res3.data.irq.sharable = ACPI_SHARED;
4520 
4521                 resource->res4.type = ACPI_RESOURCE_TYPE_END_TAG;
4522                 resource->res4.length = sizeof(struct acpi_resource);
4523         }
4524         /* setup Type 2/3 resources */
4525         else {
4526                 /* setup io resource */
4527                 resource->res1.type = ACPI_RESOURCE_TYPE_IO;
4528                 resource->res1.length = sizeof(struct acpi_resource);
4529                 memcpy(&resource->res1.data.io, &ioport->io1,
4530                                 sizeof(struct acpi_resource_io));
4531 
4532                 /* setup irq resource */
4533                 resource->res2.type = ACPI_RESOURCE_TYPE_IRQ;
4534                 resource->res2.length = sizeof(struct acpi_resource);
4535                 memcpy(&resource->res2.data.irq, &irq->irq,
4536                                 sizeof(struct acpi_resource_irq));
4537                 /* we requested a shared irq */
4538                 resource->res2.data.irq.sharable = ACPI_SHARED;
4539 
4540                 resource->res3.type = ACPI_RESOURCE_TYPE_END_TAG;
4541                 resource->res3.length = sizeof(struct acpi_resource);
4542         }
4543 
4544         /* Attempt to set the resource */
4545         dprintk("Evaluating _SRS\n");
4546         status = acpi_set_current_resources(device->handle, &buffer);
4547 
4548         /* check for total failure */
4549         if (ACPI_FAILURE(status)) {
4550                 pr_err("Error evaluating _SRS\n");
4551                 result = -ENODEV;
4552                 goto end;
4553         }
4554 
4555         /* Necessary device initializations calls (from sonypi) */
4556         sony_pic_call1(0x82);
4557         sony_pic_call2(0x81, 0xff);
4558         sony_pic_call1(compat ? 0x92 : 0x82);
4559 
4560 end:
4561         kfree(resource);
4562         return result;
4563 }
4564 
4565 /*****************
4566  *
4567  * ISR: some event is available
4568  *
4569  *****************/
4570 static irqreturn_t sony_pic_irq(int irq, void *dev_id)
4571 {
4572         int i, j;
4573         u8 ev = 0;
4574         u8 data_mask = 0;
4575         u8 device_event = 0;
4576 
4577         struct sony_pic_dev *dev = (struct sony_pic_dev *) dev_id;
4578 
4579         ev = inb_p(dev->cur_ioport->io1.minimum);
4580         if (dev->cur_ioport->io2.minimum)
4581                 data_mask = inb_p(dev->cur_ioport->io2.minimum);
4582         else
4583                 data_mask = inb_p(dev->cur_ioport->io1.minimum +
4584                                 dev->evport_offset);
4585 
4586         dprintk("event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
4587                         ev, data_mask, dev->cur_ioport->io1.minimum,
4588                         dev->evport_offset);
4589 
4590         if (ev == 0x00 || ev == 0xff)
4591                 return IRQ_HANDLED;
4592 
4593         for (i = 0; dev->event_types[i].mask; i++) {
4594 
4595                 if ((data_mask & dev->event_types[i].data) !=
4596                     dev->event_types[i].data)
4597                         continue;
4598 
4599                 if (!(mask & dev->event_types[i].mask))
4600                         continue;
4601 
4602                 for (j = 0; dev->event_types[i].events[j].event; j++) {
4603                         if (ev == dev->event_types[i].events[j].data) {
4604                                 device_event =
4605                                         dev->event_types[i].events[j].event;
4606                                 /* some events may require ignoring */
4607                                 if (!device_event)
4608                                         return IRQ_HANDLED;
4609                                 goto found;
4610                         }
4611                 }
4612         }
4613         /* Still not able to decode the event try to pass
4614          * it over to the minidriver
4615          */
4616         if (dev->handle_irq && dev->handle_irq(data_mask, ev) == 0)
4617                 return IRQ_HANDLED;
4618 
4619         dprintk("unknown event ([%.2x] [%.2x]) at port 0x%.4x(+0x%.2x)\n",
4620                         ev, data_mask, dev->cur_ioport->io1.minimum,
4621                         dev->evport_offset);
4622         return IRQ_HANDLED;
4623 
4624 found:
4625         sony_laptop_report_input_event(device_event);
4626         sonypi_compat_report_event(device_event);
4627         return IRQ_HANDLED;
4628 }
4629 
4630 /*****************
4631  *
4632  *  ACPI driver
4633  *
4634  *****************/
4635 static int sony_pic_remove(struct acpi_device *device)
4636 {
4637         struct sony_pic_ioport *io, *tmp_io;
4638         struct sony_pic_irq *irq, *tmp_irq;
4639 
4640         if (sony_pic_disable(device)) {
4641                 pr_err("Couldn't disable device\n");
4642                 return -ENXIO;
4643         }
4644 
4645         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
4646         release_region(spic_dev.cur_ioport->io1.minimum,
4647                         spic_dev.cur_ioport->io1.address_length);
4648         if (spic_dev.cur_ioport->io2.minimum)
4649                 release_region(spic_dev.cur_ioport->io2.minimum,
4650                                 spic_dev.cur_ioport->io2.address_length);
4651 
4652         sonypi_compat_exit();
4653 
4654         sony_laptop_remove_input();
4655 
4656         /* pf attrs */
4657         sysfs_remove_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
4658         sony_pf_remove();
4659 
4660         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
4661                 list_del(&io->list);
4662                 kfree(io);
4663         }
4664         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
4665                 list_del(&irq->list);
4666                 kfree(irq);
4667         }
4668         spic_dev.cur_ioport = NULL;
4669         spic_dev.cur_irq = NULL;
4670 
4671         dprintk(SONY_PIC_DRIVER_NAME " removed.\n");
4672         return 0;
4673 }
4674 
4675 static int sony_pic_add(struct acpi_device *device)
4676 {
4677         int result;
4678         struct sony_pic_ioport *io, *tmp_io;
4679         struct sony_pic_irq *irq, *tmp_irq;
4680 
4681         spic_dev.acpi_dev = device;
4682         strcpy(acpi_device_class(device), "sony/hotkey");
4683         sony_pic_detect_device_type(&spic_dev);
4684         mutex_init(&spic_dev.lock);
4685 
4686         /* read _PRS resources */
4687         result = sony_pic_possible_resources(device);
4688         if (result) {
4689                 pr_err("Unable to read possible resources\n");
4690                 goto err_free_resources;
4691         }
4692 
4693         /* setup input devices and helper fifo */
4694         result = sony_laptop_setup_input(device);
4695         if (result) {
4696                 pr_err("Unable to create input devices\n");
4697                 goto err_free_resources;
4698         }
4699 
4700         result = sonypi_compat_init();
4701         if (result)
4702                 goto err_remove_input;
4703 
4704         /* request io port */
4705         list_for_each_entry_reverse(io, &spic_dev.ioports, list) {
4706                 if (request_region(io->io1.minimum, io->io1.address_length,
4707                                         "Sony Programmable I/O Device")) {
4708                         dprintk("I/O port1: 0x%.4x (0x%.4x) + 0x%.2x\n",
4709                                         io->io1.minimum, io->io1.maximum,
4710                                         io->io1.address_length);
4711                         /* Type 1 have 2 ioports */
4712                         if (io->io2.minimum) {
4713                                 if (request_region(io->io2.minimum,
4714                                                 io->io2.address_length,
4715                                                 "Sony Programmable I/O Device")) {
4716                                         dprintk("I/O port2: 0x%.4x (0x%.4x) + 0x%.2x\n",
4717                                                         io->io2.minimum, io->io2.maximum,
4718                                                         io->io2.address_length);
4719                                         spic_dev.cur_ioport = io;
4720                                         break;
4721                                 }
4722                                 else {
4723                                         dprintk("Unable to get I/O port2: "
4724                                                         "0x%.4x (0x%.4x) + 0x%.2x\n",
4725                                                         io->io2.minimum, io->io2.maximum,
4726                                                         io->io2.address_length);
4727                                         release_region(io->io1.minimum,
4728                                                         io->io1.address_length);
4729                                 }
4730                         }
4731                         else {
4732                                 spic_dev.cur_ioport = io;
4733                                 break;
4734                         }
4735                 }
4736         }
4737         if (!spic_dev.cur_ioport) {
4738                 pr_err("Failed to request_region\n");
4739                 result = -ENODEV;
4740                 goto err_remove_compat;
4741         }
4742 
4743         /* request IRQ */
4744         list_for_each_entry_reverse(irq, &spic_dev.interrupts, list) {
4745                 if (!request_irq(irq->irq.interrupts[0], sony_pic_irq,
4746                                         0, "sony-laptop", &spic_dev)) {
4747                         dprintk("IRQ: %d - triggering: %d - "
4748                                         "polarity: %d - shr: %d\n",
4749                                         irq->irq.interrupts[0],
4750                                         irq->irq.triggering,
4751                                         irq->irq.polarity,
4752                                         irq->irq.sharable);
4753                         spic_dev.cur_irq = irq;
4754                         break;
4755                 }
4756         }
4757         if (!spic_dev.cur_irq) {
4758                 pr_err("Failed to request_irq\n");
4759                 result = -ENODEV;
4760                 goto err_release_region;
4761         }
4762 
4763         /* set resource status _SRS */
4764         result = sony_pic_enable(device, spic_dev.cur_ioport, spic_dev.cur_irq);
4765         if (result) {
4766                 pr_err("Couldn't enable device\n");
4767                 goto err_free_irq;
4768         }
4769 
4770         spic_dev.bluetooth_power = -1;
4771         /* create device attributes */
4772         result = sony_pf_add();
4773         if (result)
4774                 goto err_disable_device;
4775 
4776         result = sysfs_create_group(&sony_pf_device->dev.kobj, &spic_attribute_group);
4777         if (result)
4778                 goto err_remove_pf;
4779 
4780         pr_info("SPIC setup done.\n");
4781         return 0;
4782 
4783 err_remove_pf:
4784         sony_pf_remove();
4785 
4786 err_disable_device:
4787         sony_pic_disable(device);
4788 
4789 err_free_irq:
4790         free_irq(spic_dev.cur_irq->irq.interrupts[0], &spic_dev);
4791 
4792 err_release_region:
4793         release_region(spic_dev.cur_ioport->io1.minimum,
4794                         spic_dev.cur_ioport->io1.address_length);
4795         if (spic_dev.cur_ioport->io2.minimum)
4796                 release_region(spic_dev.cur_ioport->io2.minimum,
4797                                 spic_dev.cur_ioport->io2.address_length);
4798 
4799 err_remove_compat:
4800         sonypi_compat_exit();
4801 
4802 err_remove_input:
4803         sony_laptop_remove_input();
4804 
4805 err_free_resources:
4806         list_for_each_entry_safe(io, tmp_io, &spic_dev.ioports, list) {
4807                 list_del(&io->list);
4808                 kfree(io);
4809         }
4810         list_for_each_entry_safe(irq, tmp_irq, &spic_dev.interrupts, list) {
4811                 list_del(&irq->list);
4812                 kfree(irq);
4813         }
4814         spic_dev.cur_ioport = NULL;
4815         spic_dev.cur_irq = NULL;
4816 
4817         return result;
4818 }
4819 
4820 #ifdef CONFIG_PM_SLEEP
4821 static int sony_pic_suspend(struct device *dev)
4822 {
4823         if (sony_pic_disable(to_acpi_device(dev)))
4824                 return -ENXIO;
4825         return 0;
4826 }
4827 
4828 static int sony_pic_resume(struct device *dev)
4829 {
4830         sony_pic_enable(to_acpi_device(dev),
4831                         spic_dev.cur_ioport, spic_dev.cur_irq);
4832         return 0;
4833 }
4834 #endif
4835 
4836 static SIMPLE_DEV_PM_OPS(sony_pic_pm, sony_pic_suspend, sony_pic_resume);
4837 
4838 static const struct acpi_device_id sony_pic_device_ids[] = {
4839         {SONY_PIC_HID, 0},
4840         {"", 0},
4841 };
4842 
4843 static struct acpi_driver sony_pic_driver = {
4844         .name = SONY_PIC_DRIVER_NAME,
4845         .class = SONY_PIC_CLASS,
4846         .ids = sony_pic_device_ids,
4847         .owner = THIS_MODULE,
4848         .ops = {
4849                 .add = sony_pic_add,
4850                 .remove = sony_pic_remove,
4851                 },
4852         .drv.pm = &sony_pic_pm,
4853 };
4854 
4855 static struct dmi_system_id __initdata sonypi_dmi_table[] = {
4856         {
4857                 .ident = "Sony Vaio",
4858                 .matches = {
4859                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
4860                         DMI_MATCH(DMI_PRODUCT_NAME, "PCG-"),
4861                 },
4862         },
4863         {
4864                 .ident = "Sony Vaio",
4865                 .matches = {
4866                         DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
4867                         DMI_MATCH(DMI_PRODUCT_NAME, "VGN-"),
4868                 },
4869         },
4870         { }
4871 };
4872 
4873 static int __init sony_laptop_init(void)
4874 {
4875         int result;
4876 
4877         if (!no_spic && dmi_check_system(sonypi_dmi_table)) {
4878                 result = acpi_bus_register_driver(&sony_pic_driver);
4879                 if (result) {
4880                         pr_err("Unable to register SPIC driver\n");
4881                         goto out;
4882                 }
4883                 spic_drv_registered = 1;
4884         }
4885 
4886         result = acpi_bus_register_driver(&sony_nc_driver);
4887         if (result) {
4888                 pr_err("Unable to register SNC driver\n");
4889                 goto out_unregister_pic;
4890         }
4891 
4892         return 0;
4893 
4894 out_unregister_pic:
4895         if (spic_drv_registered)
4896                 acpi_bus_unregister_driver(&sony_pic_driver);
4897 out:
4898         return result;
4899 }
4900 
4901 static void __exit sony_laptop_exit(void)
4902 {
4903         acpi_bus_unregister_driver(&sony_nc_driver);
4904         if (spic_drv_registered)
4905                 acpi_bus_unregister_driver(&sony_pic_driver);
4906 }
4907 
4908 module_init(sony_laptop_init);
4909 module_exit(sony_laptop_exit);
4910 

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