Version:  2.0.40 2.2.26 2.4.37 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 3.18 3.19

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

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