Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

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

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