c45c60f7ea2fd3696a51e7c4959b1e1c2a27dbcb
[linux-drm-fsl-dcu.git] / 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 <acpi/acpi_drivers.h>
65 #include <acpi/acpi_bus.h>
66 #include <asm/uaccess.h>
67 #include <linux/sonypi.h>
68 #include <linux/sony-laptop.h>
69 #include <linux/rfkill.h>
70 #ifdef CONFIG_SONYPI_COMPAT
71 #include <linux/poll.h>
72 #include <linux/miscdevice.h>
73 #endif
74
75 #define dprintk(fmt, ...)                       \
76 do {                                            \
77         if (debug)                              \
78                 pr_warn(fmt, ##__VA_ARGS__);    \
79 } while (0)
80
81 #define SONY_LAPTOP_DRIVER_VERSION      "0.6"
82
83 #define SONY_NC_CLASS           "sony-nc"
84 #define SONY_NC_HID             "SNY5001"
85 #define SONY_NC_DRIVER_NAME     "Sony Notebook Control Driver"
86
87 #define SONY_PIC_CLASS          "sony-pic"
88 #define SONY_PIC_HID            "SNY6001"
89 #define SONY_PIC_DRIVER_NAME    "Sony Programmable IO Control Driver"
90
91 MODULE_AUTHOR("Stelian Pop, Mattia Dongili");
92 MODULE_DESCRIPTION("Sony laptop extras driver (SPIC and SNC ACPI device)");
93 MODULE_LICENSE("GPL");
94 MODULE_VERSION(SONY_LAPTOP_DRIVER_VERSION);
95
96 static int debug;
97 module_param(debug, int, 0);
98 MODULE_PARM_DESC(debug, "set this to 1 (and RTFM) if you want to help "
99                  "the development of this driver");
100
101 static int no_spic;             /* = 0 */
102 module_param(no_spic, int, 0444);
103 MODULE_PARM_DESC(no_spic,
104                  "set this if you don't want to enable the SPIC device");
105
106 static int compat;              /* = 0 */
107 module_param(compat, int, 0444);
108 MODULE_PARM_DESC(compat,
109                  "set this if you want to enable backward compatibility mode");
110
111 static unsigned long mask = 0xffffffff;
112 module_param(mask, ulong, 0644);
113 MODULE_PARM_DESC(mask,
114                  "set this to the mask of event you want to enable (see doc)");
115
116 static int camera;              /* = 0 */
117 module_param(camera, int, 0444);
118 MODULE_PARM_DESC(camera,
119                  "set this to 1 to enable Motion Eye camera controls "
120                  "(only use it if you have a C1VE or C1VN model)");
121
122 #ifdef CONFIG_SONYPI_COMPAT
123 static int minor = -1;
124 module_param(minor, int, 0);
125 MODULE_PARM_DESC(minor,
126                  "minor number of the misc device for the SPIC compatibility code, "
127                  "default is -1 (automatic)");
128 #endif
129
130 static int kbd_backlight = -1;
131 module_param(kbd_backlight, int, 0444);
132 MODULE_PARM_DESC(kbd_backlight,
133                  "set this to 0 to disable keyboard backlight, "
134                  "1 to enable it (default: no change from current value)");
135
136 static int kbd_backlight_timeout = -1;
137 module_param(kbd_backlight_timeout, int, 0444);
138 MODULE_PARM_DESC(kbd_backlight_timeout,
139                  "meaningful values vary from 0 to 3 and their meaning depends "
140                  "on the model (default: no change from current value)");
141
142 #ifdef CONFIG_PM_SLEEP
143 static void sony_nc_kbd_backlight_resume(void);
144 static void sony_nc_thermal_resume(void);
145 #endif
146 static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
147                 unsigned int handle);
148 static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
149                 unsigned int handle);
150
151 static int sony_nc_battery_care_setup(struct platform_device *pd,
152                 unsigned int handle);
153 static void sony_nc_battery_care_cleanup(struct platform_device *pd);
154
155 static int sony_nc_thermal_setup(struct platform_device *pd);
156 static void sony_nc_thermal_cleanup(struct platform_device *pd);
157
158 static int sony_nc_lid_resume_setup(struct platform_device *pd);
159 static void sony_nc_lid_resume_cleanup(struct platform_device *pd);
160
161 static int sony_nc_gfx_switch_setup(struct platform_device *pd,
162                 unsigned int handle);
163 static void sony_nc_gfx_switch_cleanup(struct platform_device *pd);
164 static int __sony_nc_gfx_switch_status_get(void);
165
166 static int sony_nc_highspeed_charging_setup(struct platform_device *pd);
167 static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd);
168
169 static int sony_nc_touchpad_setup(struct platform_device *pd,
170                                   unsigned int handle);
171 static void sony_nc_touchpad_cleanup(struct platform_device *pd);
172
173 enum sony_nc_rfkill {
174         SONY_WIFI,
175         SONY_BLUETOOTH,
176         SONY_WWAN,
177         SONY_WIMAX,
178         N_SONY_RFKILL,
179 };
180
181 static int sony_rfkill_handle;
182 static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL];
183 static int sony_rfkill_address[N_SONY_RFKILL] = {0x300, 0x500, 0x700, 0x900};
184 static int sony_nc_rfkill_setup(struct acpi_device *device,
185                 unsigned int handle);
186 static void sony_nc_rfkill_cleanup(void);
187 static void sony_nc_rfkill_update(void);
188
189 /*********** Input Devices ***********/
190
191 #define SONY_LAPTOP_BUF_SIZE    128
192 struct sony_laptop_input_s {
193         atomic_t                users;
194         struct input_dev        *jog_dev;
195         struct input_dev        *key_dev;
196         struct kfifo            fifo;
197         spinlock_t              fifo_lock;
198         struct timer_list       release_key_timer;
199 };
200
201 static struct sony_laptop_input_s sony_laptop_input = {
202         .users = ATOMIC_INIT(0),
203 };
204
205 struct sony_laptop_keypress {
206         struct input_dev *dev;
207         int key;
208 };
209
210 /* Correspondance table between sonypi events
211  * and input layer indexes in the keymap
212  */
213 static int sony_laptop_input_index[] = {
214         -1,     /*  0 no event */
215         -1,     /*  1 SONYPI_EVENT_JOGDIAL_DOWN */
216         -1,     /*  2 SONYPI_EVENT_JOGDIAL_UP */
217         -1,     /*  3 SONYPI_EVENT_JOGDIAL_DOWN_PRESSED */
218         -1,     /*  4 SONYPI_EVENT_JOGDIAL_UP_PRESSED */
219         -1,     /*  5 SONYPI_EVENT_JOGDIAL_PRESSED */
220         -1,     /*  6 SONYPI_EVENT_JOGDIAL_RELEASED */
221          0,     /*  7 SONYPI_EVENT_CAPTURE_PRESSED */
222          1,     /*  8 SONYPI_EVENT_CAPTURE_RELEASED */
223          2,     /*  9 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
224          3,     /* 10 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
225          4,     /* 11 SONYPI_EVENT_FNKEY_ESC */
226          5,     /* 12 SONYPI_EVENT_FNKEY_F1 */
227          6,     /* 13 SONYPI_EVENT_FNKEY_F2 */
228          7,     /* 14 SONYPI_EVENT_FNKEY_F3 */
229          8,     /* 15 SONYPI_EVENT_FNKEY_F4 */
230          9,     /* 16 SONYPI_EVENT_FNKEY_F5 */
231         10,     /* 17 SONYPI_EVENT_FNKEY_F6 */
232         11,     /* 18 SONYPI_EVENT_FNKEY_F7 */
233         12,     /* 19 SONYPI_EVENT_FNKEY_F8 */
234         13,     /* 20 SONYPI_EVENT_FNKEY_F9 */
235         14,     /* 21 SONYPI_EVENT_FNKEY_F10 */
236         15,     /* 22 SONYPI_EVENT_FNKEY_F11 */
237         16,     /* 23 SONYPI_EVENT_FNKEY_F12 */
238         17,     /* 24 SONYPI_EVENT_FNKEY_1 */
239         18,     /* 25 SONYPI_EVENT_FNKEY_2 */
240         19,     /* 26 SONYPI_EVENT_FNKEY_D */
241         20,     /* 27 SONYPI_EVENT_FNKEY_E */
242         21,     /* 28 SONYPI_EVENT_FNKEY_F */
243         22,     /* 29 SONYPI_EVENT_FNKEY_S */
244         23,     /* 30 SONYPI_EVENT_FNKEY_B */
245         24,     /* 31 SONYPI_EVENT_BLUETOOTH_PRESSED */
246         25,     /* 32 SONYPI_EVENT_PKEY_P1 */
247         26,     /* 33 SONYPI_EVENT_PKEY_P2 */
248         27,     /* 34 SONYPI_EVENT_PKEY_P3 */
249         28,     /* 35 SONYPI_EVENT_BACK_PRESSED */
250         -1,     /* 36 SONYPI_EVENT_LID_CLOSED */
251         -1,     /* 37 SONYPI_EVENT_LID_OPENED */
252         29,     /* 38 SONYPI_EVENT_BLUETOOTH_ON */
253         30,     /* 39 SONYPI_EVENT_BLUETOOTH_OFF */
254         31,     /* 40 SONYPI_EVENT_HELP_PRESSED */
255         32,     /* 41 SONYPI_EVENT_FNKEY_ONLY */
256         33,     /* 42 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
257         34,     /* 43 SONYPI_EVENT_JOGDIAL_FAST_UP */
258         35,     /* 44 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
259         36,     /* 45 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
260         37,     /* 46 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
261         38,     /* 47 SONYPI_EVENT_JOGDIAL_VFAST_UP */
262         39,     /* 48 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
263         40,     /* 49 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
264         41,     /* 50 SONYPI_EVENT_ZOOM_PRESSED */
265         42,     /* 51 SONYPI_EVENT_THUMBPHRASE_PRESSED */
266         43,     /* 52 SONYPI_EVENT_MEYE_FACE */
267         44,     /* 53 SONYPI_EVENT_MEYE_OPPOSITE */
268         45,     /* 54 SONYPI_EVENT_MEMORYSTICK_INSERT */
269         46,     /* 55 SONYPI_EVENT_MEMORYSTICK_EJECT */
270         -1,     /* 56 SONYPI_EVENT_ANYBUTTON_RELEASED */
271         -1,     /* 57 SONYPI_EVENT_BATTERY_INSERT */
272         -1,     /* 58 SONYPI_EVENT_BATTERY_REMOVE */
273         -1,     /* 59 SONYPI_EVENT_FNKEY_RELEASED */
274         47,     /* 60 SONYPI_EVENT_WIRELESS_ON */
275         48,     /* 61 SONYPI_EVENT_WIRELESS_OFF */
276         49,     /* 62 SONYPI_EVENT_ZOOM_IN_PRESSED */
277         50,     /* 63 SONYPI_EVENT_ZOOM_OUT_PRESSED */
278         51,     /* 64 SONYPI_EVENT_CD_EJECT_PRESSED */
279         52,     /* 65 SONYPI_EVENT_MODEKEY_PRESSED */
280         53,     /* 66 SONYPI_EVENT_PKEY_P4 */
281         54,     /* 67 SONYPI_EVENT_PKEY_P5 */
282         55,     /* 68 SONYPI_EVENT_SETTINGKEY_PRESSED */
283         56,     /* 69 SONYPI_EVENT_VOLUME_INC_PRESSED */
284         57,     /* 70 SONYPI_EVENT_VOLUME_DEC_PRESSED */
285         -1,     /* 71 SONYPI_EVENT_BRIGHTNESS_PRESSED */
286         58,     /* 72 SONYPI_EVENT_MEDIA_PRESSED */
287         59,     /* 72 SONYPI_EVENT_VENDOR_PRESSED */
288 };
289
290 static int sony_laptop_input_keycode_map[] = {
291         KEY_CAMERA,     /*  0 SONYPI_EVENT_CAPTURE_PRESSED */
292         KEY_RESERVED,   /*  1 SONYPI_EVENT_CAPTURE_RELEASED */
293         KEY_RESERVED,   /*  2 SONYPI_EVENT_CAPTURE_PARTIALPRESSED */
294         KEY_RESERVED,   /*  3 SONYPI_EVENT_CAPTURE_PARTIALRELEASED */
295         KEY_FN_ESC,     /*  4 SONYPI_EVENT_FNKEY_ESC */
296         KEY_FN_F1,      /*  5 SONYPI_EVENT_FNKEY_F1 */
297         KEY_FN_F2,      /*  6 SONYPI_EVENT_FNKEY_F2 */
298         KEY_FN_F3,      /*  7 SONYPI_EVENT_FNKEY_F3 */
299         KEY_FN_F4,      /*  8 SONYPI_EVENT_FNKEY_F4 */
300         KEY_FN_F5,      /*  9 SONYPI_EVENT_FNKEY_F5 */
301         KEY_FN_F6,      /* 10 SONYPI_EVENT_FNKEY_F6 */
302         KEY_FN_F7,      /* 11 SONYPI_EVENT_FNKEY_F7 */
303         KEY_FN_F8,      /* 12 SONYPI_EVENT_FNKEY_F8 */
304         KEY_FN_F9,      /* 13 SONYPI_EVENT_FNKEY_F9 */
305         KEY_FN_F10,     /* 14 SONYPI_EVENT_FNKEY_F10 */
306         KEY_FN_F11,     /* 15 SONYPI_EVENT_FNKEY_F11 */
307         KEY_FN_F12,     /* 16 SONYPI_EVENT_FNKEY_F12 */
308         KEY_FN_1,       /* 17 SONYPI_EVENT_FNKEY_1 */
309         KEY_FN_2,       /* 18 SONYPI_EVENT_FNKEY_2 */
310         KEY_FN_D,       /* 19 SONYPI_EVENT_FNKEY_D */
311         KEY_FN_E,       /* 20 SONYPI_EVENT_FNKEY_E */
312         KEY_FN_F,       /* 21 SONYPI_EVENT_FNKEY_F */
313         KEY_FN_S,       /* 22 SONYPI_EVENT_FNKEY_S */
314         KEY_FN_B,       /* 23 SONYPI_EVENT_FNKEY_B */
315         KEY_BLUETOOTH,  /* 24 SONYPI_EVENT_BLUETOOTH_PRESSED */
316         KEY_PROG1,      /* 25 SONYPI_EVENT_PKEY_P1 */
317         KEY_PROG2,      /* 26 SONYPI_EVENT_PKEY_P2 */
318         KEY_PROG3,      /* 27 SONYPI_EVENT_PKEY_P3 */
319         KEY_BACK,       /* 28 SONYPI_EVENT_BACK_PRESSED */
320         KEY_BLUETOOTH,  /* 29 SONYPI_EVENT_BLUETOOTH_ON */
321         KEY_BLUETOOTH,  /* 30 SONYPI_EVENT_BLUETOOTH_OFF */
322         KEY_HELP,       /* 31 SONYPI_EVENT_HELP_PRESSED */
323         KEY_FN,         /* 32 SONYPI_EVENT_FNKEY_ONLY */
324         KEY_RESERVED,   /* 33 SONYPI_EVENT_JOGDIAL_FAST_DOWN */
325         KEY_RESERVED,   /* 34 SONYPI_EVENT_JOGDIAL_FAST_UP */
326         KEY_RESERVED,   /* 35 SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED */
327         KEY_RESERVED,   /* 36 SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED */
328         KEY_RESERVED,   /* 37 SONYPI_EVENT_JOGDIAL_VFAST_DOWN */
329         KEY_RESERVED,   /* 38 SONYPI_EVENT_JOGDIAL_VFAST_UP */
330         KEY_RESERVED,   /* 39 SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED */
331         KEY_RESERVED,   /* 40 SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED */
332         KEY_ZOOM,       /* 41 SONYPI_EVENT_ZOOM_PRESSED */
333         BTN_THUMB,      /* 42 SONYPI_EVENT_THUMBPHRASE_PRESSED */
334         KEY_RESERVED,   /* 43 SONYPI_EVENT_MEYE_FACE */
335         KEY_RESERVED,   /* 44 SONYPI_EVENT_MEYE_OPPOSITE */
336         KEY_RESERVED,   /* 45 SONYPI_EVENT_MEMORYSTICK_INSERT */
337         KEY_RESERVED,   /* 46 SONYPI_EVENT_MEMORYSTICK_EJECT */
338         KEY_WLAN,       /* 47 SONYPI_EVENT_WIRELESS_ON */
339         KEY_WLAN,       /* 48 SONYPI_EVENT_WIRELESS_OFF */
340         KEY_ZOOMIN,     /* 49 SONYPI_EVENT_ZOOM_IN_PRESSED */
341         KEY_ZOOMOUT,    /* 50 SONYPI_EVENT_ZOOM_OUT_PRESSED */
342         KEY_EJECTCD,    /* 51 SONYPI_EVENT_CD_EJECT_PRESSED */
343         KEY_F13,        /* 52 SONYPI_EVENT_MODEKEY_PRESSED */
344         KEY_PROG4,      /* 53 SONYPI_EVENT_PKEY_P4 */
345         KEY_F14,        /* 54 SONYPI_EVENT_PKEY_P5 */
346         KEY_F15,        /* 55 SONYPI_EVENT_SETTINGKEY_PRESSED */
347         KEY_VOLUMEUP,   /* 56 SONYPI_EVENT_VOLUME_INC_PRESSED */
348         KEY_VOLUMEDOWN, /* 57 SONYPI_EVENT_VOLUME_DEC_PRESSED */
349         KEY_MEDIA,      /* 58 SONYPI_EVENT_MEDIA_PRESSED */
350         KEY_VENDOR,     /* 59 SONYPI_EVENT_VENDOR_PRESSED */
351 };
352
353 /* release buttons after a short delay if pressed */
354 static void do_sony_laptop_release_key(unsigned long unused)
355 {
356         struct sony_laptop_keypress kp;
357         unsigned long flags;
358
359         spin_lock_irqsave(&sony_laptop_input.fifo_lock, flags);
360
361         if (kfifo_out(&sony_laptop_input.fifo,
362                       (unsigned char *)&kp, sizeof(kp)) == sizeof(kp)) {
363                 input_report_key(kp.dev, kp.key, 0);
364                 input_sync(kp.dev);
365         }
366
367         /* If there is something in the fifo schedule next release. */
368         if (kfifo_len(&sony_laptop_input.fifo) != 0)
369                 mod_timer(&sony_laptop_input.release_key_timer,
370                           jiffies + msecs_to_jiffies(10));
371
372         spin_unlock_irqrestore(&sony_laptop_input.fifo_lock, flags);
373 }
374
375 /* forward event to the input subsystem */
376 static void sony_laptop_report_input_event(u8 event)
377 {
378         struct input_dev *jog_dev = sony_laptop_input.jog_dev;
379         struct input_dev *key_dev = sony_laptop_input.key_dev;
380         struct sony_laptop_keypress kp = { NULL };
381         int scancode = -1;
382
383         if (event == SONYPI_EVENT_FNKEY_RELEASED ||
384                         event == SONYPI_EVENT_ANYBUTTON_RELEASED) {
385                 /* Nothing, not all VAIOs generate this event */
386                 return;
387         }
388
389         /* report events */
390         switch (event) {
391         /* jog_dev events */
392         case SONYPI_EVENT_JOGDIAL_UP:
393         case SONYPI_EVENT_JOGDIAL_UP_PRESSED:
394                 input_report_rel(jog_dev, REL_WHEEL, 1);
395                 input_sync(jog_dev);
396                 return;
397
398         case SONYPI_EVENT_JOGDIAL_DOWN:
399         case SONYPI_EVENT_JOGDIAL_DOWN_PRESSED:
400                 input_report_rel(jog_dev, REL_WHEEL, -1);
401                 input_sync(jog_dev);
402                 return;
403
404         /* key_dev events */
405         case SONYPI_EVENT_JOGDIAL_PRESSED:
406                 kp.key = BTN_MIDDLE;
407                 kp.dev = jog_dev;
408                 break;
409
410         default:
411                 if (event >= ARRAY_SIZE(sony_laptop_input_index)) {
412                         dprintk("sony_laptop_report_input_event, event not known: %d\n", event);
413                         break;
414                 }
415                 if ((scancode = sony_laptop_input_index[event]) != -1) {
416                         kp.key = sony_laptop_input_keycode_map[scancode];
417                         if (kp.key != KEY_UNKNOWN)
418                                 kp.dev = key_dev;
419                 }
420                 break;
421         }
422
423         if (kp.dev) {
424                 /* if we have a scancode we emit it so we can always
425                     remap the key */
426                 if (scancode != -1)
427                         input_event(kp.dev, EV_MSC, MSC_SCAN, scancode);
428                 input_report_key(kp.dev, kp.key, 1);
429                 input_sync(kp.dev);
430
431                 /* schedule key release */
432                 kfifo_in_locked(&sony_laptop_input.fifo,
433                                 (unsigned char *)&kp, sizeof(kp),
434                                 &sony_laptop_input.fifo_lock);
435                 mod_timer(&sony_laptop_input.release_key_timer,
436                           jiffies + msecs_to_jiffies(10));
437         } else
438                 dprintk("unknown input event %.2x\n", event);
439 }
440
441 static int sony_laptop_setup_input(struct acpi_device *acpi_device)
442 {
443         struct input_dev *jog_dev;
444         struct input_dev *key_dev;
445         int i;
446         int error;
447
448         /* don't run again if already initialized */
449         if (atomic_add_return(1, &sony_laptop_input.users) > 1)
450                 return 0;
451
452         /* kfifo */
453         spin_lock_init(&sony_laptop_input.fifo_lock);
454         error = kfifo_alloc(&sony_laptop_input.fifo,
455                             SONY_LAPTOP_BUF_SIZE, GFP_KERNEL);
456         if (error) {
457                 pr_err("kfifo_alloc failed\n");
458                 goto err_dec_users;
459         }
460
461         setup_timer(&sony_laptop_input.release_key_timer,
462                     do_sony_laptop_release_key, 0);
463
464         /* input keys */
465         key_dev = input_allocate_device();
466         if (!key_dev) {
467                 error = -ENOMEM;
468                 goto err_free_kfifo;
469         }
470
471         key_dev->name = "Sony Vaio Keys";
472         key_dev->id.bustype = BUS_ISA;
473         key_dev->id.vendor = PCI_VENDOR_ID_SONY;
474         key_dev->dev.parent = &acpi_device->dev;
475
476         /* Initialize the Input Drivers: special keys */
477         input_set_capability(key_dev, EV_MSC, MSC_SCAN);
478
479         __set_bit(EV_KEY, key_dev->evbit);
480         key_dev->keycodesize = sizeof(sony_laptop_input_keycode_map[0]);
481         key_dev->keycodemax = ARRAY_SIZE(sony_laptop_input_keycode_map);
482         key_dev->keycode = &sony_laptop_input_keycode_map;
483         for (i = 0; i < ARRAY_SIZE(sony_laptop_input_keycode_map); i++)
484                 __set_bit(sony_laptop_input_keycode_map[i], key_dev->keybit);
485         __clear_bit(KEY_RESERVED, key_dev->keybit);
486
487         error = input_register_device(key_dev);
488         if (error)
489                 goto err_free_keydev;
490
491         sony_laptop_input.key_dev = key_dev;
492
493         /* jogdial */
494         jog_dev = input_allocate_device();
495         if (!jog_dev) {
496                 error = -ENOMEM;
497                 goto err_unregister_keydev;
498         }
499
500         jog_dev->name = "Sony Vaio Jogdial";
501         jog_dev->id.bustype = BUS_ISA;
502         jog_dev->id.vendor = PCI_VENDOR_ID_SONY;
503         jog_dev->dev.parent = &acpi_device->dev;
504
505         input_set_capability(jog_dev, EV_KEY, BTN_MIDDLE);
506         input_set_capability(jog_dev, EV_REL, REL_WHEEL);
507
508         error = input_register_device(jog_dev);
509         if (error)
510                 goto err_free_jogdev;
511
512         sony_laptop_input.jog_dev = jog_dev;
513
514         return 0;
515
516 err_free_jogdev:
517         input_free_device(jog_dev);
518
519 err_unregister_keydev:
520         input_unregister_device(key_dev);
521         /* to avoid kref underflow below at input_free_device */
522         key_dev = NULL;
523
524 err_free_keydev:
525         input_free_device(key_dev);
526
527 err_free_kfifo:
528         kfifo_free(&sony_laptop_input.fifo);
529
530 err_dec_users:
531         atomic_dec(&sony_laptop_input.users);
532         return error;
533 }
534
535 static void sony_laptop_remove_input(void)
536 {
537         struct sony_laptop_keypress kp = { NULL };
538
539         /* Cleanup only after the last user has gone */
540         if (!atomic_dec_and_test(&sony_laptop_input.users))
541                 return;
542
543         del_timer_sync(&sony_laptop_input.release_key_timer);
544
545         /*
546          * Generate key-up events for remaining keys. Note that we don't
547          * need locking since nobody is adding new events to the kfifo.
548          */
549         while (kfifo_out(&sony_laptop_input.fifo,
550                          (unsigned char *)&kp, sizeof(kp)) == sizeof(kp)) {
551                 input_report_key(kp.dev, kp.key, 0);
552                 input_sync(kp.dev);
553         }
554
555         /* destroy input devs */
556         input_unregister_device(sony_laptop_input.key_dev);
557         sony_laptop_input.key_dev = NULL;
558
559         if (sony_laptop_input.jog_dev) {
560                 input_unregister_device(sony_laptop_input.jog_dev);
561                 sony_laptop_input.jog_dev = NULL;
562         }
563
564         kfifo_free(&sony_laptop_input.fifo);
565 }
566
567 /*********** Platform Device ***********/
568
569 static atomic_t sony_pf_users = ATOMIC_INIT(0);
570 static struct platform_driver sony_pf_driver = {
571         .driver = {
572                    .name = "sony-laptop",
573                    .owner = THIS_MODULE,
574                    }
575 };
576 static struct platform_device *sony_pf_device;
577
578 static int sony_pf_add(void)
579 {
580         int ret = 0;
581
582         /* don't run again if already initialized */
583         if (atomic_add_return(1, &sony_pf_users) > 1)
584                 return 0;
585
586         ret = platform_driver_register(&sony_pf_driver);
587         if (ret)
588                 goto out;
589
590         sony_pf_device = platform_device_alloc("sony-laptop", -1);
591         if (!sony_pf_device) {
592                 ret = -ENOMEM;
593                 goto out_platform_registered;
594         }
595
596         ret = platform_device_add(sony_pf_device);
597         if (ret)
598                 goto out_platform_alloced;
599
600         return 0;
601
602       out_platform_alloced:
603         platform_device_put(sony_pf_device);
604         sony_pf_device = NULL;
605       out_platform_registered:
606         platform_driver_unregister(&sony_pf_driver);
607       out:
608         atomic_dec(&sony_pf_users);
609         return ret;
610 }
611
612 static void sony_pf_remove(void)
613 {
614         /* deregister only after the last user has gone */
615         if (!atomic_dec_and_test(&sony_pf_users))
616                 return;
617
618         platform_device_unregister(sony_pf_device);
619         platform_driver_unregister(&sony_pf_driver);
620 }
621
622 /*********** SNC (SNY5001) Device ***********/
623
624 /* the device uses 1-based values, while the backlight subsystem uses
625    0-based values */
626 #define SONY_MAX_BRIGHTNESS     8
627
628 #define SNC_VALIDATE_IN         0
629 #define SNC_VALIDATE_OUT        1
630
631 static ssize_t sony_nc_sysfs_show(struct device *, struct device_attribute *,
632                               char *);
633 static ssize_t sony_nc_sysfs_store(struct device *, struct device_attribute *,
634                                const char *, size_t);
635 static int boolean_validate(const int, const int);
636 static int brightness_default_validate(const int, const int);
637
638 struct sony_nc_value {
639         char *name;             /* name of the entry */
640         char **acpiget;         /* names of the ACPI get function */
641         char **acpiset;         /* names of the ACPI set function */
642         int (*validate)(const int, const int);  /* input/output validation */
643         int value;              /* current setting */
644         int valid;              /* Has ever been set */
645         int debug;              /* active only in debug mode ? */
646         struct device_attribute devattr;        /* sysfs attribute */
647 };
648
649 #define SNC_HANDLE_NAMES(_name, _values...) \
650         static char *snc_##_name[] = { _values, NULL }
651
652 #define SNC_HANDLE(_name, _getters, _setters, _validate, _debug) \
653         { \
654                 .name           = __stringify(_name), \
655                 .acpiget        = _getters, \
656                 .acpiset        = _setters, \
657                 .validate       = _validate, \
658                 .debug          = _debug, \
659                 .devattr        = __ATTR(_name, 0, sony_nc_sysfs_show, sony_nc_sysfs_store), \
660         }
661
662 #define SNC_HANDLE_NULL { .name = NULL }
663
664 SNC_HANDLE_NAMES(fnkey_get, "GHKE");
665
666 SNC_HANDLE_NAMES(brightness_def_get, "GPBR");
667 SNC_HANDLE_NAMES(brightness_def_set, "SPBR");
668
669 SNC_HANDLE_NAMES(cdpower_get, "GCDP");
670 SNC_HANDLE_NAMES(cdpower_set, "SCDP", "CDPW");
671
672 SNC_HANDLE_NAMES(audiopower_get, "GAZP");
673 SNC_HANDLE_NAMES(audiopower_set, "AZPW");
674
675 SNC_HANDLE_NAMES(lanpower_get, "GLNP");
676 SNC_HANDLE_NAMES(lanpower_set, "LNPW");
677
678 SNC_HANDLE_NAMES(lidstate_get, "GLID");
679
680 SNC_HANDLE_NAMES(indicatorlamp_get, "GILS");
681 SNC_HANDLE_NAMES(indicatorlamp_set, "SILS");
682
683 SNC_HANDLE_NAMES(gainbass_get, "GMGB");
684 SNC_HANDLE_NAMES(gainbass_set, "CMGB");
685
686 SNC_HANDLE_NAMES(PID_get, "GPID");
687
688 SNC_HANDLE_NAMES(CTR_get, "GCTR");
689 SNC_HANDLE_NAMES(CTR_set, "SCTR");
690
691 SNC_HANDLE_NAMES(PCR_get, "GPCR");
692 SNC_HANDLE_NAMES(PCR_set, "SPCR");
693
694 SNC_HANDLE_NAMES(CMI_get, "GCMI");
695 SNC_HANDLE_NAMES(CMI_set, "SCMI");
696
697 static struct sony_nc_value sony_nc_values[] = {
698         SNC_HANDLE(brightness_default, snc_brightness_def_get,
699                         snc_brightness_def_set, brightness_default_validate, 0),
700         SNC_HANDLE(fnkey, snc_fnkey_get, NULL, NULL, 0),
701         SNC_HANDLE(cdpower, snc_cdpower_get, snc_cdpower_set, boolean_validate, 0),
702         SNC_HANDLE(audiopower, snc_audiopower_get, snc_audiopower_set,
703                         boolean_validate, 0),
704         SNC_HANDLE(lanpower, snc_lanpower_get, snc_lanpower_set,
705                         boolean_validate, 1),
706         SNC_HANDLE(lidstate, snc_lidstate_get, NULL,
707                         boolean_validate, 0),
708         SNC_HANDLE(indicatorlamp, snc_indicatorlamp_get, snc_indicatorlamp_set,
709                         boolean_validate, 0),
710         SNC_HANDLE(gainbass, snc_gainbass_get, snc_gainbass_set,
711                         boolean_validate, 0),
712         /* unknown methods */
713         SNC_HANDLE(PID, snc_PID_get, NULL, NULL, 1),
714         SNC_HANDLE(CTR, snc_CTR_get, snc_CTR_set, NULL, 1),
715         SNC_HANDLE(PCR, snc_PCR_get, snc_PCR_set, NULL, 1),
716         SNC_HANDLE(CMI, snc_CMI_get, snc_CMI_set, NULL, 1),
717         SNC_HANDLE_NULL
718 };
719
720 static acpi_handle sony_nc_acpi_handle;
721 static struct acpi_device *sony_nc_acpi_device = NULL;
722
723 /*
724  * acpi_evaluate_object wrappers
725  * all useful calls into SNC methods take one or zero parameters and return
726  * integers or arrays.
727  */
728 static union acpi_object *__call_snc_method(acpi_handle handle, char *method,
729                 u64 *value)
730 {
731         union acpi_object *result = NULL;
732         struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
733         acpi_status status;
734
735         if (value) {
736                 struct acpi_object_list params;
737                 union acpi_object in;
738                 in.type = ACPI_TYPE_INTEGER;
739                 in.integer.value = *value;
740                 params.count = 1;
741                 params.pointer = &in;
742                 status = acpi_evaluate_object(handle, method, &params, &output);
743                 dprintk("__call_snc_method: [%s:0x%.8x%.8x]\n", method,
744                                 (unsigned int)(*value >> 32),
745                                 (unsigned int)*value & 0xffffffff);
746         } else {
747                 status = acpi_evaluate_object(handle, method, NULL, &output);
748                 dprintk("__call_snc_method: [%s]\n", method);
749         }
750
751         if (ACPI_FAILURE(status)) {
752                 pr_err("Failed to evaluate [%s]\n", method);
753                 return NULL;
754         }
755
756         result = (union acpi_object *) output.pointer;
757         if (!result)
758                 dprintk("No return object [%s]\n", method);
759
760         return result;
761 }
762
763 static int sony_nc_int_call(acpi_handle handle, char *name, int *value,
764                 int *result)
765 {
766         union acpi_object *object = NULL;
767         if (value) {
768                 u64 v = *value;
769                 object = __call_snc_method(handle, name, &v);
770         } else
771                 object = __call_snc_method(handle, name, NULL);
772
773         if (!object)
774                 return -EINVAL;
775
776         if (object->type != ACPI_TYPE_INTEGER) {
777                 pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
778                                 ACPI_TYPE_INTEGER, object->type);
779                 kfree(object);
780                 return -EINVAL;
781         }
782
783         if (result)
784                 *result = object->integer.value;
785
786         kfree(object);
787         return 0;
788 }
789
790 #define MIN(a, b)       (a > b ? b : a)
791 static int sony_nc_buffer_call(acpi_handle handle, char *name, u64 *value,
792                 void *buffer, size_t buflen)
793 {
794         int ret = 0;
795         size_t len = len;
796         union acpi_object *object = __call_snc_method(handle, name, value);
797
798         if (!object)
799                 return -EINVAL;
800
801         if (object->type == ACPI_TYPE_BUFFER) {
802                 len = MIN(buflen, object->buffer.length);
803                 memcpy(buffer, object->buffer.pointer, len);
804
805         } else if (object->type == ACPI_TYPE_INTEGER) {
806                 len = MIN(buflen, sizeof(object->integer.value));
807                 memcpy(buffer, &object->integer.value, len);
808
809         } else {
810                 pr_warn("Invalid acpi_object: expected 0x%x got 0x%x\n",
811                                 ACPI_TYPE_BUFFER, object->type);
812                 ret = -EINVAL;
813         }
814
815         kfree(object);
816         return ret;
817 }
818
819 struct sony_nc_handles {
820         u16 cap[0x10];
821         struct device_attribute devattr;
822 };
823
824 static struct sony_nc_handles *handles;
825
826 static ssize_t sony_nc_handles_show(struct device *dev,
827                 struct device_attribute *attr, char *buffer)
828 {
829         ssize_t len = 0;
830         int i;
831
832         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
833                 len += snprintf(buffer + len, PAGE_SIZE - len, "0x%.4x ",
834                                 handles->cap[i]);
835         }
836         len += snprintf(buffer + len, PAGE_SIZE - len, "\n");
837
838         return len;
839 }
840
841 static int sony_nc_handles_setup(struct platform_device *pd)
842 {
843         int i, r, result, arg;
844
845         handles = kzalloc(sizeof(*handles), GFP_KERNEL);
846         if (!handles)
847                 return -ENOMEM;
848
849         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
850                 arg = i + 0x20;
851                 r = sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg,
852                                         &result);
853                 if (!r) {
854                         dprintk("caching handle 0x%.4x (offset: 0x%.2x)\n",
855                                         result, i);
856                         handles->cap[i] = result;
857                 }
858         }
859
860         if (debug) {
861                 sysfs_attr_init(&handles->devattr.attr);
862                 handles->devattr.attr.name = "handles";
863                 handles->devattr.attr.mode = S_IRUGO;
864                 handles->devattr.show = sony_nc_handles_show;
865
866                 /* allow reading capabilities via sysfs */
867                 if (device_create_file(&pd->dev, &handles->devattr)) {
868                         kfree(handles);
869                         handles = NULL;
870                         return -1;
871                 }
872         }
873
874         return 0;
875 }
876
877 static int sony_nc_handles_cleanup(struct platform_device *pd)
878 {
879         if (handles) {
880                 if (debug)
881                         device_remove_file(&pd->dev, &handles->devattr);
882                 kfree(handles);
883                 handles = NULL;
884         }
885         return 0;
886 }
887
888 static int sony_find_snc_handle(int handle)
889 {
890         int i;
891
892         /* not initialized yet, return early */
893         if (!handles || !handle)
894                 return -EINVAL;
895
896         for (i = 0; i < 0x10; i++) {
897                 if (handles->cap[i] == handle) {
898                         dprintk("found handle 0x%.4x (offset: 0x%.2x)\n",
899                                         handle, i);
900                         return i;
901                 }
902         }
903         dprintk("handle 0x%.4x not found\n", handle);
904         return -EINVAL;
905 }
906
907 static int sony_call_snc_handle(int handle, int argument, int *result)
908 {
909         int arg, ret = 0;
910         int offset = sony_find_snc_handle(handle);
911
912         if (offset < 0)
913                 return offset;
914
915         arg = offset | argument;
916         ret = sony_nc_int_call(sony_nc_acpi_handle, "SN07", &arg, result);
917         dprintk("called SN07 with 0x%.4x (result: 0x%.4x)\n", arg, *result);
918         return ret;
919 }
920
921 /*
922  * sony_nc_values input/output validate functions
923  */
924
925 /* brightness_default_validate:
926  *
927  * manipulate input output values to keep consistency with the
928  * backlight framework for which brightness values are 0-based.
929  */
930 static int brightness_default_validate(const int direction, const int value)
931 {
932         switch (direction) {
933                 case SNC_VALIDATE_OUT:
934                         return value - 1;
935                 case SNC_VALIDATE_IN:
936                         if (value >= 0 && value < SONY_MAX_BRIGHTNESS)
937                                 return value + 1;
938         }
939         return -EINVAL;
940 }
941
942 /* boolean_validate:
943  *
944  * on input validate boolean values 0/1, on output just pass the
945  * received value.
946  */
947 static int boolean_validate(const int direction, const int value)
948 {
949         if (direction == SNC_VALIDATE_IN) {
950                 if (value != 0 && value != 1)
951                         return -EINVAL;
952         }
953         return value;
954 }
955
956 /*
957  * Sysfs show/store common to all sony_nc_values
958  */
959 static ssize_t sony_nc_sysfs_show(struct device *dev, struct device_attribute *attr,
960                               char *buffer)
961 {
962         int value, ret = 0;
963         struct sony_nc_value *item =
964             container_of(attr, struct sony_nc_value, devattr);
965
966         if (!*item->acpiget)
967                 return -EIO;
968
969         ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiget, NULL,
970                                 &value);
971         if (ret < 0)
972                 return -EIO;
973
974         if (item->validate)
975                 value = item->validate(SNC_VALIDATE_OUT, value);
976
977         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
978 }
979
980 static ssize_t sony_nc_sysfs_store(struct device *dev,
981                                struct device_attribute *attr,
982                                const char *buffer, size_t count)
983 {
984         int value;
985         int ret = 0;
986         struct sony_nc_value *item =
987             container_of(attr, struct sony_nc_value, devattr);
988
989         if (!item->acpiset)
990                 return -EIO;
991
992         if (count > 31)
993                 return -EINVAL;
994
995         if (kstrtoint(buffer, 10, &value))
996                 return -EINVAL;
997
998         if (item->validate)
999                 value = item->validate(SNC_VALIDATE_IN, value);
1000
1001         if (value < 0)
1002                 return value;
1003
1004         ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
1005                                &value, NULL);
1006         if (ret < 0)
1007                 return -EIO;
1008
1009         item->value = value;
1010         item->valid = 1;
1011         return count;
1012 }
1013
1014
1015 /*
1016  * Backlight device
1017  */
1018 struct sony_backlight_props {
1019         struct backlight_device *dev;
1020         int                     handle;
1021         int                     cmd_base;
1022         u8                      offset;
1023         u8                      maxlvl;
1024 };
1025 struct sony_backlight_props sony_bl_props;
1026
1027 static int sony_backlight_update_status(struct backlight_device *bd)
1028 {
1029         int arg = bd->props.brightness + 1;
1030         return sony_nc_int_call(sony_nc_acpi_handle, "SBRT", &arg, NULL);
1031 }
1032
1033 static int sony_backlight_get_brightness(struct backlight_device *bd)
1034 {
1035         int value;
1036
1037         if (sony_nc_int_call(sony_nc_acpi_handle, "GBRT", NULL, &value))
1038                 return 0;
1039         /* brightness levels are 1-based, while backlight ones are 0-based */
1040         return value - 1;
1041 }
1042
1043 static int sony_nc_get_brightness_ng(struct backlight_device *bd)
1044 {
1045         int result;
1046         struct sony_backlight_props *sdev =
1047                 (struct sony_backlight_props *)bl_get_data(bd);
1048
1049         sony_call_snc_handle(sdev->handle, sdev->cmd_base + 0x100, &result);
1050
1051         return (result & 0xff) - sdev->offset;
1052 }
1053
1054 static int sony_nc_update_status_ng(struct backlight_device *bd)
1055 {
1056         int value, result;
1057         struct sony_backlight_props *sdev =
1058                 (struct sony_backlight_props *)bl_get_data(bd);
1059
1060         value = bd->props.brightness + sdev->offset;
1061         if (sony_call_snc_handle(sdev->handle, sdev->cmd_base | (value << 0x10),
1062                                 &result))
1063                 return -EIO;
1064
1065         return value;
1066 }
1067
1068 static const struct backlight_ops sony_backlight_ops = {
1069         .options = BL_CORE_SUSPENDRESUME,
1070         .update_status = sony_backlight_update_status,
1071         .get_brightness = sony_backlight_get_brightness,
1072 };
1073 static const struct backlight_ops sony_backlight_ng_ops = {
1074         .options = BL_CORE_SUSPENDRESUME,
1075         .update_status = sony_nc_update_status_ng,
1076         .get_brightness = sony_nc_get_brightness_ng,
1077 };
1078
1079 /*
1080  * New SNC-only Vaios event mapping to driver known keys
1081  */
1082 struct sony_nc_event {
1083         u8      data;
1084         u8      event;
1085 };
1086
1087 static struct sony_nc_event sony_100_events[] = {
1088         { 0x90, SONYPI_EVENT_PKEY_P1 },
1089         { 0x10, SONYPI_EVENT_ANYBUTTON_RELEASED },
1090         { 0x91, SONYPI_EVENT_PKEY_P2 },
1091         { 0x11, SONYPI_EVENT_ANYBUTTON_RELEASED },
1092         { 0x81, SONYPI_EVENT_FNKEY_F1 },
1093         { 0x01, SONYPI_EVENT_FNKEY_RELEASED },
1094         { 0x82, SONYPI_EVENT_FNKEY_F2 },
1095         { 0x02, SONYPI_EVENT_FNKEY_RELEASED },
1096         { 0x83, SONYPI_EVENT_FNKEY_F3 },
1097         { 0x03, SONYPI_EVENT_FNKEY_RELEASED },
1098         { 0x84, SONYPI_EVENT_FNKEY_F4 },
1099         { 0x04, SONYPI_EVENT_FNKEY_RELEASED },
1100         { 0x85, SONYPI_EVENT_FNKEY_F5 },
1101         { 0x05, SONYPI_EVENT_FNKEY_RELEASED },
1102         { 0x86, SONYPI_EVENT_FNKEY_F6 },
1103         { 0x06, SONYPI_EVENT_FNKEY_RELEASED },
1104         { 0x87, SONYPI_EVENT_FNKEY_F7 },
1105         { 0x07, SONYPI_EVENT_FNKEY_RELEASED },
1106         { 0x88, SONYPI_EVENT_FNKEY_F8 },
1107         { 0x08, SONYPI_EVENT_FNKEY_RELEASED },
1108         { 0x89, SONYPI_EVENT_FNKEY_F9 },
1109         { 0x09, SONYPI_EVENT_FNKEY_RELEASED },
1110         { 0x8A, SONYPI_EVENT_FNKEY_F10 },
1111         { 0x0A, SONYPI_EVENT_FNKEY_RELEASED },
1112         { 0x8B, SONYPI_EVENT_FNKEY_F11 },
1113         { 0x0B, SONYPI_EVENT_FNKEY_RELEASED },
1114         { 0x8C, SONYPI_EVENT_FNKEY_F12 },
1115         { 0x0C, SONYPI_EVENT_FNKEY_RELEASED },
1116         { 0x9d, SONYPI_EVENT_ZOOM_PRESSED },
1117         { 0x1d, SONYPI_EVENT_ANYBUTTON_RELEASED },
1118         { 0x9f, SONYPI_EVENT_CD_EJECT_PRESSED },
1119         { 0x1f, SONYPI_EVENT_ANYBUTTON_RELEASED },
1120         { 0xa1, SONYPI_EVENT_MEDIA_PRESSED },
1121         { 0x21, SONYPI_EVENT_ANYBUTTON_RELEASED },
1122         { 0xa4, SONYPI_EVENT_CD_EJECT_PRESSED },
1123         { 0x24, SONYPI_EVENT_ANYBUTTON_RELEASED },
1124         { 0xa5, SONYPI_EVENT_VENDOR_PRESSED },
1125         { 0x25, SONYPI_EVENT_ANYBUTTON_RELEASED },
1126         { 0xa6, SONYPI_EVENT_HELP_PRESSED },
1127         { 0x26, SONYPI_EVENT_ANYBUTTON_RELEASED },
1128         { 0, 0 },
1129 };
1130
1131 static struct sony_nc_event sony_127_events[] = {
1132         { 0x81, SONYPI_EVENT_MODEKEY_PRESSED },
1133         { 0x01, SONYPI_EVENT_ANYBUTTON_RELEASED },
1134         { 0x82, SONYPI_EVENT_PKEY_P1 },
1135         { 0x02, SONYPI_EVENT_ANYBUTTON_RELEASED },
1136         { 0x83, SONYPI_EVENT_PKEY_P2 },
1137         { 0x03, SONYPI_EVENT_ANYBUTTON_RELEASED },
1138         { 0x84, SONYPI_EVENT_PKEY_P3 },
1139         { 0x04, SONYPI_EVENT_ANYBUTTON_RELEASED },
1140         { 0x85, SONYPI_EVENT_PKEY_P4 },
1141         { 0x05, SONYPI_EVENT_ANYBUTTON_RELEASED },
1142         { 0x86, SONYPI_EVENT_PKEY_P5 },
1143         { 0x06, SONYPI_EVENT_ANYBUTTON_RELEASED },
1144         { 0x87, SONYPI_EVENT_SETTINGKEY_PRESSED },
1145         { 0x07, SONYPI_EVENT_ANYBUTTON_RELEASED },
1146         { 0, 0 },
1147 };
1148
1149 static int sony_nc_hotkeys_decode(u32 event, unsigned int handle)
1150 {
1151         int ret = -EINVAL;
1152         unsigned int result = 0;
1153         struct sony_nc_event *key_event;
1154
1155         if (sony_call_snc_handle(handle, 0x200, &result)) {
1156                 dprintk("Unable to decode event 0x%.2x 0x%.2x\n", handle,
1157                                 event);
1158                 return -EINVAL;
1159         }
1160
1161         result &= 0xFF;
1162
1163         if (handle == 0x0100)
1164                 key_event = sony_100_events;
1165         else
1166                 key_event = sony_127_events;
1167
1168         for (; key_event->data; key_event++) {
1169                 if (key_event->data == result) {
1170                         ret = key_event->event;
1171                         break;
1172                 }
1173         }
1174
1175         if (!key_event->data)
1176                 pr_info("Unknown hotkey 0x%.2x/0x%.2x (handle 0x%.2x)\n",
1177                                 event, result, handle);
1178
1179         return ret;
1180 }
1181
1182 /*
1183  * ACPI callbacks
1184  */
1185 enum event_types {
1186         HOTKEY = 1,
1187         KILLSWITCH,
1188         GFX_SWITCH
1189 };
1190 static void sony_nc_notify(struct acpi_device *device, u32 event)
1191 {
1192         u32 real_ev = event;
1193         u8 ev_type = 0;
1194         dprintk("sony_nc_notify, event: 0x%.2x\n", event);
1195
1196         if (event >= 0x90) {
1197                 unsigned int result = 0;
1198                 unsigned int arg = 0;
1199                 unsigned int handle = 0;
1200                 unsigned int offset = event - 0x90;
1201
1202                 if (offset >= ARRAY_SIZE(handles->cap)) {
1203                         pr_err("Event 0x%x outside of capabilities list\n",
1204                                         event);
1205                         return;
1206                 }
1207                 handle = handles->cap[offset];
1208
1209                 /* list of handles known for generating events */
1210                 switch (handle) {
1211                 /* hotkey event */
1212                 case 0x0100:
1213                 case 0x0127:
1214                         ev_type = HOTKEY;
1215                         real_ev = sony_nc_hotkeys_decode(event, handle);
1216
1217                         if (real_ev > 0)
1218                                 sony_laptop_report_input_event(real_ev);
1219                         else
1220                                 /* restore the original event for reporting */
1221                                 real_ev = event;
1222
1223                         break;
1224
1225                 /* wlan switch */
1226                 case 0x0124:
1227                 case 0x0135:
1228                         /* events on this handle are reported when the
1229                          * switch changes position or for battery
1230                          * events. We'll notify both of them but only
1231                          * update the rfkill device status when the
1232                          * switch is moved.
1233                          */
1234                         ev_type = KILLSWITCH;
1235                         sony_call_snc_handle(handle, 0x0100, &result);
1236                         real_ev = result & 0x03;
1237
1238                         /* hw switch event */
1239                         if (real_ev == 1)
1240                                 sony_nc_rfkill_update();
1241
1242                         break;
1243
1244                 case 0x0128:
1245                 case 0x0146:
1246                         /* Hybrid GFX switching */
1247                         sony_call_snc_handle(handle, 0x0000, &result);
1248                         dprintk("GFX switch event received (reason: %s)\n",
1249                                         (result == 0x1) ? "switch change" :
1250                                         (result == 0x2) ? "output switch" :
1251                                         (result == 0x3) ? "output switch" :
1252                                         "");
1253
1254                         ev_type = GFX_SWITCH;
1255                         real_ev = __sony_nc_gfx_switch_status_get();
1256                         break;
1257
1258                 case 0x015B:
1259                         /* Hybrid GFX switching SVS151290S */
1260                         ev_type = GFX_SWITCH;
1261                         real_ev = __sony_nc_gfx_switch_status_get();
1262                         break;
1263                 default:
1264                         dprintk("Unknown event 0x%x for handle 0x%x\n",
1265                                         event, handle);
1266                         break;
1267                 }
1268
1269                 /* clear the event (and the event reason when present) */
1270                 arg = 1 << offset;
1271                 sony_nc_int_call(sony_nc_acpi_handle, "SN05", &arg, &result);
1272
1273         } else {
1274                 /* old style event */
1275                 ev_type = HOTKEY;
1276                 sony_laptop_report_input_event(real_ev);
1277         }
1278         acpi_bus_generate_netlink_event(sony_nc_acpi_device->pnp.device_class,
1279                         dev_name(&sony_nc_acpi_device->dev), ev_type, real_ev);
1280 }
1281
1282 static acpi_status sony_walk_callback(acpi_handle handle, u32 level,
1283                                       void *context, void **return_value)
1284 {
1285         struct acpi_device_info *info;
1286
1287         if (ACPI_SUCCESS(acpi_get_object_info(handle, &info))) {
1288                 pr_warn("method: name: %4.4s, args %X\n",
1289                         (char *)&info->name, info->param_count);
1290
1291                 kfree(info);
1292         }
1293
1294         return AE_OK;
1295 }
1296
1297 /*
1298  * ACPI device
1299  */
1300 static void sony_nc_function_setup(struct acpi_device *device,
1301                 struct platform_device *pf_device)
1302 {
1303         unsigned int i, result, bitmask, arg;
1304
1305         if (!handles)
1306                 return;
1307
1308         /* setup found handles here */
1309         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1310                 unsigned int handle = handles->cap[i];
1311
1312                 if (!handle)
1313                         continue;
1314
1315                 dprintk("setting up handle 0x%.4x\n", handle);
1316
1317                 switch (handle) {
1318                 case 0x0100:
1319                 case 0x0101:
1320                 case 0x0127:
1321                         /* setup hotkeys */
1322                         sony_call_snc_handle(handle, 0, &result);
1323                         break;
1324                 case 0x0102:
1325                         /* setup hotkeys */
1326                         sony_call_snc_handle(handle, 0x100, &result);
1327                         break;
1328                 case 0x0105:
1329                 case 0x0148:
1330                         /* touchpad enable/disable */
1331                         result = sony_nc_touchpad_setup(pf_device, handle);
1332                         if (result)
1333                                 pr_err("couldn't set up touchpad control function (%d)\n",
1334                                                 result);
1335                         break;
1336                 case 0x0115:
1337                 case 0x0136:
1338                 case 0x013f:
1339                         result = sony_nc_battery_care_setup(pf_device, handle);
1340                         if (result)
1341                                 pr_err("couldn't set up battery care function (%d)\n",
1342                                                 result);
1343                         break;
1344                 case 0x0119:
1345                         result = sony_nc_lid_resume_setup(pf_device);
1346                         if (result)
1347                                 pr_err("couldn't set up lid resume function (%d)\n",
1348                                                 result);
1349                         break;
1350                 case 0x0122:
1351                         result = sony_nc_thermal_setup(pf_device);
1352                         if (result)
1353                                 pr_err("couldn't set up thermal profile function (%d)\n",
1354                                                 result);
1355                         break;
1356                 case 0x0128:
1357                 case 0x0146:
1358                 case 0x015B:
1359                         result = sony_nc_gfx_switch_setup(pf_device, handle);
1360                         if (result)
1361                                 pr_err("couldn't set up GFX Switch status (%d)\n",
1362                                                 result);
1363                         break;
1364                 case 0x0131:
1365                         result = sony_nc_highspeed_charging_setup(pf_device);
1366                         if (result)
1367                                 pr_err("couldn't set up high speed charging function (%d)\n",
1368                                        result);
1369                         break;
1370                 case 0x0124:
1371                 case 0x0135:
1372                         result = sony_nc_rfkill_setup(device, handle);
1373                         if (result)
1374                                 pr_err("couldn't set up rfkill support (%d)\n",
1375                                                 result);
1376                         break;
1377                 case 0x0137:
1378                 case 0x0143:
1379                 case 0x014b:
1380                 case 0x014c:
1381                 case 0x0163:
1382                         result = sony_nc_kbd_backlight_setup(pf_device, handle);
1383                         if (result)
1384                                 pr_err("couldn't set up keyboard backlight function (%d)\n",
1385                                                 result);
1386                         break;
1387                 default:
1388                         continue;
1389                 }
1390         }
1391
1392         /* Enable all events */
1393         arg = 0x10;
1394         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1395                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1396                                 &result);
1397 }
1398
1399 static void sony_nc_function_cleanup(struct platform_device *pd)
1400 {
1401         unsigned int i, result, bitmask, handle;
1402
1403         /* get enabled events and disable them */
1404         sony_nc_int_call(sony_nc_acpi_handle, "SN01", NULL, &bitmask);
1405         sony_nc_int_call(sony_nc_acpi_handle, "SN03", &bitmask, &result);
1406
1407         /* cleanup handles here */
1408         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1409
1410                 handle = handles->cap[i];
1411
1412                 if (!handle)
1413                         continue;
1414
1415                 switch (handle) {
1416                 case 0x0105:
1417                 case 0x0148:
1418                         sony_nc_touchpad_cleanup(pd);
1419                         break;
1420                 case 0x0115:
1421                 case 0x0136:
1422                 case 0x013f:
1423                         sony_nc_battery_care_cleanup(pd);
1424                         break;
1425                 case 0x0119:
1426                         sony_nc_lid_resume_cleanup(pd);
1427                         break;
1428                 case 0x0122:
1429                         sony_nc_thermal_cleanup(pd);
1430                         break;
1431                 case 0x0128:
1432                 case 0x0146:
1433                 case 0x015B:
1434                         sony_nc_gfx_switch_cleanup(pd);
1435                         break;
1436                 case 0x0131:
1437                         sony_nc_highspeed_charging_cleanup(pd);
1438                         break;
1439                 case 0x0124:
1440                 case 0x0135:
1441                         sony_nc_rfkill_cleanup();
1442                         break;
1443                 case 0x0137:
1444                 case 0x0143:
1445                 case 0x014b:
1446                 case 0x014c:
1447                 case 0x0163:
1448                         sony_nc_kbd_backlight_cleanup(pd, handle);
1449                         break;
1450                 default:
1451                         continue;
1452                 }
1453         }
1454
1455         /* finally cleanup the handles list */
1456         sony_nc_handles_cleanup(pd);
1457 }
1458
1459 #ifdef CONFIG_PM_SLEEP
1460 static void sony_nc_function_resume(void)
1461 {
1462         unsigned int i, result, bitmask, arg;
1463
1464         dprintk("Resuming SNC device\n");
1465
1466         for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
1467                 unsigned int handle = handles->cap[i];
1468
1469                 if (!handle)
1470                         continue;
1471
1472                 switch (handle) {
1473                 case 0x0100:
1474                 case 0x0101:
1475                 case 0x0127:
1476                         /* re-enable hotkeys */
1477                         sony_call_snc_handle(handle, 0, &result);
1478                         break;
1479                 case 0x0102:
1480                         /* re-enable hotkeys */
1481                         sony_call_snc_handle(handle, 0x100, &result);
1482                         break;
1483                 case 0x0122:
1484                         sony_nc_thermal_resume();
1485                         break;
1486                 case 0x0124:
1487                 case 0x0135:
1488                         sony_nc_rfkill_update();
1489                         break;
1490                 case 0x0137:
1491                 case 0x0143:
1492                 case 0x014b:
1493                 case 0x014c:
1494                 case 0x0163:
1495                         sony_nc_kbd_backlight_resume();
1496                         break;
1497                 default:
1498                         continue;
1499                 }
1500         }
1501
1502         /* Enable all events */
1503         arg = 0x10;
1504         if (!sony_nc_int_call(sony_nc_acpi_handle, "SN00", &arg, &bitmask))
1505                 sony_nc_int_call(sony_nc_acpi_handle, "SN02", &bitmask,
1506                                 &result);
1507 }
1508
1509 static int sony_nc_resume(struct device *dev)
1510 {
1511         struct sony_nc_value *item;
1512
1513         for (item = sony_nc_values; item->name; item++) {
1514                 int ret;
1515
1516                 if (!item->valid)
1517                         continue;
1518                 ret = sony_nc_int_call(sony_nc_acpi_handle, *item->acpiset,
1519                                        &item->value, NULL);
1520                 if (ret < 0) {
1521                         pr_err("%s: %d\n", __func__, ret);
1522                         break;
1523                 }
1524         }
1525
1526         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
1527                 int arg = 1;
1528                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
1529                         dprintk("ECON Method failed\n");
1530         }
1531
1532         if (acpi_has_method(sony_nc_acpi_handle, "SN00"))
1533                 sony_nc_function_resume();
1534
1535         return 0;
1536 }
1537 #endif
1538
1539 static SIMPLE_DEV_PM_OPS(sony_nc_pm, NULL, sony_nc_resume);
1540
1541 static void sony_nc_rfkill_cleanup(void)
1542 {
1543         int i;
1544
1545         for (i = 0; i < N_SONY_RFKILL; i++) {
1546                 if (sony_rfkill_devices[i]) {
1547                         rfkill_unregister(sony_rfkill_devices[i]);
1548                         rfkill_destroy(sony_rfkill_devices[i]);
1549                 }
1550         }
1551 }
1552
1553 static int sony_nc_rfkill_set(void *data, bool blocked)
1554 {
1555         int result;
1556         int argument = sony_rfkill_address[(long) data] + 0x100;
1557
1558         if (!blocked)
1559                 argument |= 0x070000;
1560
1561         return sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1562 }
1563
1564 static const struct rfkill_ops sony_rfkill_ops = {
1565         .set_block = sony_nc_rfkill_set,
1566 };
1567
1568 static int sony_nc_setup_rfkill(struct acpi_device *device,
1569                                 enum sony_nc_rfkill nc_type)
1570 {
1571         int err = 0;
1572         struct rfkill *rfk;
1573         enum rfkill_type type;
1574         const char *name;
1575         int result;
1576         bool hwblock, swblock;
1577
1578         switch (nc_type) {
1579         case SONY_WIFI:
1580                 type = RFKILL_TYPE_WLAN;
1581                 name = "sony-wifi";
1582                 break;
1583         case SONY_BLUETOOTH:
1584                 type = RFKILL_TYPE_BLUETOOTH;
1585                 name = "sony-bluetooth";
1586                 break;
1587         case SONY_WWAN:
1588                 type = RFKILL_TYPE_WWAN;
1589                 name = "sony-wwan";
1590                 break;
1591         case SONY_WIMAX:
1592                 type = RFKILL_TYPE_WIMAX;
1593                 name = "sony-wimax";
1594                 break;
1595         default:
1596                 return -EINVAL;
1597         }
1598
1599         rfk = rfkill_alloc(name, &device->dev, type,
1600                            &sony_rfkill_ops, (void *)nc_type);
1601         if (!rfk)
1602                 return -ENOMEM;
1603
1604         if (sony_call_snc_handle(sony_rfkill_handle, 0x200, &result) < 0) {
1605                 rfkill_destroy(rfk);
1606                 return -1;
1607         }
1608         hwblock = !(result & 0x1);
1609
1610         if (sony_call_snc_handle(sony_rfkill_handle,
1611                                 sony_rfkill_address[nc_type],
1612                                 &result) < 0) {
1613                 rfkill_destroy(rfk);
1614                 return -1;
1615         }
1616         swblock = !(result & 0x2);
1617
1618         rfkill_init_sw_state(rfk, swblock);
1619         rfkill_set_hw_state(rfk, hwblock);
1620
1621         err = rfkill_register(rfk);
1622         if (err) {
1623                 rfkill_destroy(rfk);
1624                 return err;
1625         }
1626         sony_rfkill_devices[nc_type] = rfk;
1627         return err;
1628 }
1629
1630 static void sony_nc_rfkill_update(void)
1631 {
1632         enum sony_nc_rfkill i;
1633         int result;
1634         bool hwblock;
1635
1636         sony_call_snc_handle(sony_rfkill_handle, 0x200, &result);
1637         hwblock = !(result & 0x1);
1638
1639         for (i = 0; i < N_SONY_RFKILL; i++) {
1640                 int argument = sony_rfkill_address[i];
1641
1642                 if (!sony_rfkill_devices[i])
1643                         continue;
1644
1645                 if (hwblock) {
1646                         if (rfkill_set_hw_state(sony_rfkill_devices[i], true)) {
1647                                 /* we already know we're blocked */
1648                         }
1649                         continue;
1650                 }
1651
1652                 sony_call_snc_handle(sony_rfkill_handle, argument, &result);
1653                 rfkill_set_states(sony_rfkill_devices[i],
1654                                   !(result & 0x2), false);
1655         }
1656 }
1657
1658 static int sony_nc_rfkill_setup(struct acpi_device *device,
1659                 unsigned int handle)
1660 {
1661         u64 offset;
1662         int i;
1663         unsigned char buffer[32] = { 0 };
1664
1665         offset = sony_find_snc_handle(handle);
1666         sony_rfkill_handle = handle;
1667
1668         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
1669                         32);
1670         if (i < 0)
1671                 return i;
1672
1673         /* The buffer is filled with magic numbers describing the devices
1674          * available, 0xff terminates the enumeration.
1675          * Known codes:
1676          *      0x00 WLAN
1677          *      0x10 BLUETOOTH
1678          *      0x20 WWAN GPRS-EDGE
1679          *      0x21 WWAN HSDPA
1680          *      0x22 WWAN EV-DO
1681          *      0x23 WWAN GPS
1682          *      0x25 Gobi WWAN no GPS
1683          *      0x26 Gobi WWAN + GPS
1684          *      0x28 Gobi WWAN no GPS
1685          *      0x29 Gobi WWAN + GPS
1686          *      0x30 WIMAX
1687          *      0x50 Gobi WWAN no GPS
1688          *      0x51 Gobi WWAN + GPS
1689          *      0x70 no SIM card slot
1690          *      0x71 SIM card slot
1691          */
1692         for (i = 0; i < ARRAY_SIZE(buffer); i++) {
1693
1694                 if (buffer[i] == 0xff)
1695                         break;
1696
1697                 dprintk("Radio devices, found 0x%.2x\n", buffer[i]);
1698
1699                 if (buffer[i] == 0 && !sony_rfkill_devices[SONY_WIFI])
1700                         sony_nc_setup_rfkill(device, SONY_WIFI);
1701
1702                 if (buffer[i] == 0x10 && !sony_rfkill_devices[SONY_BLUETOOTH])
1703                         sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
1704
1705                 if (((0xf0 & buffer[i]) == 0x20 ||
1706                                         (0xf0 & buffer[i]) == 0x50) &&
1707                                 !sony_rfkill_devices[SONY_WWAN])
1708                         sony_nc_setup_rfkill(device, SONY_WWAN);
1709
1710                 if (buffer[i] == 0x30 && !sony_rfkill_devices[SONY_WIMAX])
1711                         sony_nc_setup_rfkill(device, SONY_WIMAX);
1712         }
1713         return 0;
1714 }
1715
1716 /* Keyboard backlight feature */
1717 struct kbd_backlight {
1718         unsigned int handle;
1719         unsigned int base;
1720         unsigned int mode;
1721         unsigned int timeout;
1722         struct device_attribute mode_attr;
1723         struct device_attribute timeout_attr;
1724 };
1725
1726 static struct kbd_backlight *kbdbl_ctl;
1727
1728 static ssize_t __sony_nc_kbd_backlight_mode_set(u8 value)
1729 {
1730         int result;
1731
1732         if (value > 1)
1733                 return -EINVAL;
1734
1735         if (sony_call_snc_handle(kbdbl_ctl->handle,
1736                                 (value << 0x10) | (kbdbl_ctl->base), &result))
1737                 return -EIO;
1738
1739         /* Try to turn the light on/off immediately */
1740         sony_call_snc_handle(kbdbl_ctl->handle,
1741                         (value << 0x10) | (kbdbl_ctl->base + 0x100), &result);
1742
1743         kbdbl_ctl->mode = value;
1744
1745         return 0;
1746 }
1747
1748 static ssize_t sony_nc_kbd_backlight_mode_store(struct device *dev,
1749                 struct device_attribute *attr,
1750                 const char *buffer, size_t count)
1751 {
1752         int ret = 0;
1753         unsigned long value;
1754
1755         if (count > 31)
1756                 return -EINVAL;
1757
1758         if (kstrtoul(buffer, 10, &value))
1759                 return -EINVAL;
1760
1761         ret = __sony_nc_kbd_backlight_mode_set(value);
1762         if (ret < 0)
1763                 return ret;
1764
1765         return count;
1766 }
1767
1768 static ssize_t sony_nc_kbd_backlight_mode_show(struct device *dev,
1769                 struct device_attribute *attr, char *buffer)
1770 {
1771         ssize_t count = 0;
1772         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->mode);
1773         return count;
1774 }
1775
1776 static int __sony_nc_kbd_backlight_timeout_set(u8 value)
1777 {
1778         int result;
1779
1780         if (value > 3)
1781                 return -EINVAL;
1782
1783         if (sony_call_snc_handle(kbdbl_ctl->handle, (value << 0x10) |
1784                                 (kbdbl_ctl->base + 0x200), &result))
1785                 return -EIO;
1786
1787         kbdbl_ctl->timeout = value;
1788
1789         return 0;
1790 }
1791
1792 static ssize_t sony_nc_kbd_backlight_timeout_store(struct device *dev,
1793                 struct device_attribute *attr,
1794                 const char *buffer, size_t count)
1795 {
1796         int ret = 0;
1797         unsigned long value;
1798
1799         if (count > 31)
1800                 return -EINVAL;
1801
1802         if (kstrtoul(buffer, 10, &value))
1803                 return -EINVAL;
1804
1805         ret = __sony_nc_kbd_backlight_timeout_set(value);
1806         if (ret < 0)
1807                 return ret;
1808
1809         return count;
1810 }
1811
1812 static ssize_t sony_nc_kbd_backlight_timeout_show(struct device *dev,
1813                 struct device_attribute *attr, char *buffer)
1814 {
1815         ssize_t count = 0;
1816         count = snprintf(buffer, PAGE_SIZE, "%d\n", kbdbl_ctl->timeout);
1817         return count;
1818 }
1819
1820 static int sony_nc_kbd_backlight_setup(struct platform_device *pd,
1821                 unsigned int handle)
1822 {
1823         int result;
1824         int ret = 0;
1825
1826         if (kbdbl_ctl) {
1827                 pr_warn("handle 0x%.4x: keyboard backlight setup already done for 0x%.4x\n",
1828                                 handle, kbdbl_ctl->handle);
1829                 return -EBUSY;
1830         }
1831
1832         /* verify the kbd backlight presence, these handles are not used for
1833          * keyboard backlight only
1834          */
1835         ret = sony_call_snc_handle(handle, handle == 0x0137 ? 0x0B00 : 0x0100,
1836                         &result);
1837         if (ret)
1838                 return ret;
1839
1840         if ((handle == 0x0137 && !(result & 0x02)) ||
1841                         !(result & 0x01)) {
1842                 dprintk("no backlight keyboard found\n");
1843                 return 0;
1844         }
1845
1846         kbdbl_ctl = kzalloc(sizeof(*kbdbl_ctl), GFP_KERNEL);
1847         if (!kbdbl_ctl)
1848                 return -ENOMEM;
1849
1850         kbdbl_ctl->mode = kbd_backlight;
1851         kbdbl_ctl->timeout = kbd_backlight_timeout;
1852         kbdbl_ctl->handle = handle;
1853         if (handle == 0x0137)
1854                 kbdbl_ctl->base = 0x0C00;
1855         else
1856                 kbdbl_ctl->base = 0x4000;
1857
1858         sysfs_attr_init(&kbdbl_ctl->mode_attr.attr);
1859         kbdbl_ctl->mode_attr.attr.name = "kbd_backlight";
1860         kbdbl_ctl->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
1861         kbdbl_ctl->mode_attr.show = sony_nc_kbd_backlight_mode_show;
1862         kbdbl_ctl->mode_attr.store = sony_nc_kbd_backlight_mode_store;
1863
1864         sysfs_attr_init(&kbdbl_ctl->timeout_attr.attr);
1865         kbdbl_ctl->timeout_attr.attr.name = "kbd_backlight_timeout";
1866         kbdbl_ctl->timeout_attr.attr.mode = S_IRUGO | S_IWUSR;
1867         kbdbl_ctl->timeout_attr.show = sony_nc_kbd_backlight_timeout_show;
1868         kbdbl_ctl->timeout_attr.store = sony_nc_kbd_backlight_timeout_store;
1869
1870         ret = device_create_file(&pd->dev, &kbdbl_ctl->mode_attr);
1871         if (ret)
1872                 goto outkzalloc;
1873
1874         ret = device_create_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1875         if (ret)
1876                 goto outmode;
1877
1878         __sony_nc_kbd_backlight_mode_set(kbdbl_ctl->mode);
1879         __sony_nc_kbd_backlight_timeout_set(kbdbl_ctl->timeout);
1880
1881         return 0;
1882
1883 outmode:
1884         device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1885 outkzalloc:
1886         kfree(kbdbl_ctl);
1887         kbdbl_ctl = NULL;
1888         return ret;
1889 }
1890
1891 static void sony_nc_kbd_backlight_cleanup(struct platform_device *pd,
1892                 unsigned int handle)
1893 {
1894         if (kbdbl_ctl && handle == kbdbl_ctl->handle) {
1895                 device_remove_file(&pd->dev, &kbdbl_ctl->mode_attr);
1896                 device_remove_file(&pd->dev, &kbdbl_ctl->timeout_attr);
1897                 kfree(kbdbl_ctl);
1898                 kbdbl_ctl = NULL;
1899         }
1900 }
1901
1902 #ifdef CONFIG_PM_SLEEP
1903 static void sony_nc_kbd_backlight_resume(void)
1904 {
1905         int ignore = 0;
1906
1907         if (!kbdbl_ctl)
1908                 return;
1909
1910         if (kbdbl_ctl->mode == 0)
1911                 sony_call_snc_handle(kbdbl_ctl->handle, kbdbl_ctl->base,
1912                                 &ignore);
1913
1914         if (kbdbl_ctl->timeout != 0)
1915                 sony_call_snc_handle(kbdbl_ctl->handle,
1916                                 (kbdbl_ctl->base + 0x200) |
1917                                 (kbdbl_ctl->timeout << 0x10), &ignore);
1918 }
1919 #endif
1920
1921 struct battery_care_control {
1922         struct device_attribute attrs[2];
1923         unsigned int handle;
1924 };
1925 static struct battery_care_control *bcare_ctl;
1926
1927 static ssize_t sony_nc_battery_care_limit_store(struct device *dev,
1928                 struct device_attribute *attr,
1929                 const char *buffer, size_t count)
1930 {
1931         unsigned int result, cmd;
1932         unsigned long value;
1933
1934         if (count > 31)
1935                 return -EINVAL;
1936
1937         if (kstrtoul(buffer, 10, &value))
1938                 return -EINVAL;
1939
1940         /*  limit values (2 bits):
1941          *  00 - none
1942          *  01 - 80%
1943          *  10 - 50%
1944          *  11 - 100%
1945          *
1946          *  bit 0: 0 disable BCL, 1 enable BCL
1947          *  bit 1: 1 tell to store the battery limit (see bits 6,7) too
1948          *  bits 2,3: reserved
1949          *  bits 4,5: store the limit into the EC
1950          *  bits 6,7: store the limit into the battery
1951          */
1952         cmd = 0;
1953
1954         if (value > 0) {
1955                 if (value <= 50)
1956                         cmd = 0x20;
1957
1958                 else if (value <= 80)
1959                         cmd = 0x10;
1960
1961                 else if (value <= 100)
1962                         cmd = 0x30;
1963
1964                 else
1965                         return -EINVAL;
1966
1967                 /*
1968                  * handle 0x0115 should allow storing on battery too;
1969                  * handle 0x0136 same as 0x0115 + health status;
1970                  * handle 0x013f, same as 0x0136 but no storing on the battery
1971                  */
1972                 if (bcare_ctl->handle != 0x013f)
1973                         cmd = cmd | (cmd << 2);
1974
1975                 cmd = (cmd | 0x1) << 0x10;
1976         }
1977
1978         if (sony_call_snc_handle(bcare_ctl->handle, cmd | 0x0100, &result))
1979                 return -EIO;
1980
1981         return count;
1982 }
1983
1984 static ssize_t sony_nc_battery_care_limit_show(struct device *dev,
1985                 struct device_attribute *attr, char *buffer)
1986 {
1987         unsigned int result, status;
1988
1989         if (sony_call_snc_handle(bcare_ctl->handle, 0x0000, &result))
1990                 return -EIO;
1991
1992         status = (result & 0x01) ? ((result & 0x30) >> 0x04) : 0;
1993         switch (status) {
1994         case 1:
1995                 status = 80;
1996                 break;
1997         case 2:
1998                 status = 50;
1999                 break;
2000         case 3:
2001                 status = 100;
2002                 break;
2003         default:
2004                 status = 0;
2005                 break;
2006         }
2007
2008         return snprintf(buffer, PAGE_SIZE, "%d\n", status);
2009 }
2010
2011 static ssize_t sony_nc_battery_care_health_show(struct device *dev,
2012                 struct device_attribute *attr, char *buffer)
2013 {
2014         ssize_t count = 0;
2015         unsigned int health;
2016
2017         if (sony_call_snc_handle(bcare_ctl->handle, 0x0200, &health))
2018                 return -EIO;
2019
2020         count = snprintf(buffer, PAGE_SIZE, "%d\n", health & 0xff);
2021
2022         return count;
2023 }
2024
2025 static int sony_nc_battery_care_setup(struct platform_device *pd,
2026                 unsigned int handle)
2027 {
2028         int ret = 0;
2029
2030         bcare_ctl = kzalloc(sizeof(struct battery_care_control), GFP_KERNEL);
2031         if (!bcare_ctl)
2032                 return -ENOMEM;
2033
2034         bcare_ctl->handle = handle;
2035
2036         sysfs_attr_init(&bcare_ctl->attrs[0].attr);
2037         bcare_ctl->attrs[0].attr.name = "battery_care_limiter";
2038         bcare_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
2039         bcare_ctl->attrs[0].show = sony_nc_battery_care_limit_show;
2040         bcare_ctl->attrs[0].store = sony_nc_battery_care_limit_store;
2041
2042         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[0]);
2043         if (ret)
2044                 goto outkzalloc;
2045
2046         /* 0x0115 is for models with no health reporting capability */
2047         if (handle == 0x0115)
2048                 return 0;
2049
2050         sysfs_attr_init(&bcare_ctl->attrs[1].attr);
2051         bcare_ctl->attrs[1].attr.name = "battery_care_health";
2052         bcare_ctl->attrs[1].attr.mode = S_IRUGO;
2053         bcare_ctl->attrs[1].show = sony_nc_battery_care_health_show;
2054
2055         ret = device_create_file(&pd->dev, &bcare_ctl->attrs[1]);
2056         if (ret)
2057                 goto outlimiter;
2058
2059         return 0;
2060
2061 outlimiter:
2062         device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2063
2064 outkzalloc:
2065         kfree(bcare_ctl);
2066         bcare_ctl = NULL;
2067
2068         return ret;
2069 }
2070
2071 static void sony_nc_battery_care_cleanup(struct platform_device *pd)
2072 {
2073         if (bcare_ctl) {
2074                 device_remove_file(&pd->dev, &bcare_ctl->attrs[0]);
2075                 if (bcare_ctl->handle != 0x0115)
2076                         device_remove_file(&pd->dev, &bcare_ctl->attrs[1]);
2077
2078                 kfree(bcare_ctl);
2079                 bcare_ctl = NULL;
2080         }
2081 }
2082
2083 struct snc_thermal_ctrl {
2084         unsigned int mode;
2085         unsigned int profiles;
2086         struct device_attribute mode_attr;
2087         struct device_attribute profiles_attr;
2088 };
2089 static struct snc_thermal_ctrl *th_handle;
2090
2091 #define THM_PROFILE_MAX 3
2092 static const char * const snc_thermal_profiles[] = {
2093         "balanced",
2094         "silent",
2095         "performance"
2096 };
2097
2098 static int sony_nc_thermal_mode_set(unsigned short mode)
2099 {
2100         unsigned int result;
2101
2102         /* the thermal profile seems to be a two bit bitmask:
2103          * lsb -> silent
2104          * msb -> performance
2105          * no bit set is the normal operation and is always valid
2106          * Some vaio models only have "balanced" and "performance"
2107          */
2108         if ((mode && !(th_handle->profiles & mode)) || mode >= THM_PROFILE_MAX)
2109                 return -EINVAL;
2110
2111         if (sony_call_snc_handle(0x0122, mode << 0x10 | 0x0200, &result))
2112                 return -EIO;
2113
2114         th_handle->mode = mode;
2115
2116         return 0;
2117 }
2118
2119 static int sony_nc_thermal_mode_get(void)
2120 {
2121         unsigned int result;
2122
2123         if (sony_call_snc_handle(0x0122, 0x0100, &result))
2124                 return -EIO;
2125
2126         return result & 0xff;
2127 }
2128
2129 static ssize_t sony_nc_thermal_profiles_show(struct device *dev,
2130                 struct device_attribute *attr, char *buffer)
2131 {
2132         short cnt;
2133         size_t idx = 0;
2134
2135         for (cnt = 0; cnt < THM_PROFILE_MAX; cnt++) {
2136                 if (!cnt || (th_handle->profiles & cnt))
2137                         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "%s ",
2138                                         snc_thermal_profiles[cnt]);
2139         }
2140         idx += snprintf(buffer + idx, PAGE_SIZE - idx, "\n");
2141
2142         return idx;
2143 }
2144
2145 static ssize_t sony_nc_thermal_mode_store(struct device *dev,
2146                 struct device_attribute *attr,
2147                 const char *buffer, size_t count)
2148 {
2149         unsigned short cmd;
2150         size_t len = count;
2151
2152         if (count == 0)
2153                 return -EINVAL;
2154
2155         /* skip the newline if present */
2156         if (buffer[len - 1] == '\n')
2157                 len--;
2158
2159         for (cmd = 0; cmd < THM_PROFILE_MAX; cmd++)
2160                 if (strncmp(buffer, snc_thermal_profiles[cmd], len) == 0)
2161                         break;
2162
2163         if (sony_nc_thermal_mode_set(cmd))
2164                 return -EIO;
2165
2166         return count;
2167 }
2168
2169 static ssize_t sony_nc_thermal_mode_show(struct device *dev,
2170                 struct device_attribute *attr, char *buffer)
2171 {
2172         ssize_t count = 0;
2173         int mode = sony_nc_thermal_mode_get();
2174
2175         if (mode < 0)
2176                 return mode;
2177
2178         count = snprintf(buffer, PAGE_SIZE, "%s\n", snc_thermal_profiles[mode]);
2179
2180         return count;
2181 }
2182
2183 static int sony_nc_thermal_setup(struct platform_device *pd)
2184 {
2185         int ret = 0;
2186         th_handle = kzalloc(sizeof(struct snc_thermal_ctrl), GFP_KERNEL);
2187         if (!th_handle)
2188                 return -ENOMEM;
2189
2190         ret = sony_call_snc_handle(0x0122, 0x0000, &th_handle->profiles);
2191         if (ret) {
2192                 pr_warn("couldn't to read the thermal profiles\n");
2193                 goto outkzalloc;
2194         }
2195
2196         ret = sony_nc_thermal_mode_get();
2197         if (ret < 0) {
2198                 pr_warn("couldn't to read the current thermal profile");
2199                 goto outkzalloc;
2200         }
2201         th_handle->mode = ret;
2202
2203         sysfs_attr_init(&th_handle->profiles_attr.attr);
2204         th_handle->profiles_attr.attr.name = "thermal_profiles";
2205         th_handle->profiles_attr.attr.mode = S_IRUGO;
2206         th_handle->profiles_attr.show = sony_nc_thermal_profiles_show;
2207
2208         sysfs_attr_init(&th_handle->mode_attr.attr);
2209         th_handle->mode_attr.attr.name = "thermal_control";
2210         th_handle->mode_attr.attr.mode = S_IRUGO | S_IWUSR;
2211         th_handle->mode_attr.show = sony_nc_thermal_mode_show;
2212         th_handle->mode_attr.store = sony_nc_thermal_mode_store;
2213
2214         ret = device_create_file(&pd->dev, &th_handle->profiles_attr);
2215         if (ret)
2216                 goto outkzalloc;
2217
2218         ret = device_create_file(&pd->dev, &th_handle->mode_attr);
2219         if (ret)
2220                 goto outprofiles;
2221
2222         return 0;
2223
2224 outprofiles:
2225         device_remove_file(&pd->dev, &th_handle->profiles_attr);
2226 outkzalloc:
2227         kfree(th_handle);
2228         th_handle = NULL;
2229         return ret;
2230 }
2231
2232 static void sony_nc_thermal_cleanup(struct platform_device *pd)
2233 {
2234         if (th_handle) {
2235                 device_remove_file(&pd->dev, &th_handle->profiles_attr);
2236                 device_remove_file(&pd->dev, &th_handle->mode_attr);
2237                 kfree(th_handle);
2238                 th_handle = NULL;
2239         }
2240 }
2241
2242 #ifdef CONFIG_PM_SLEEP
2243 static void sony_nc_thermal_resume(void)
2244 {
2245         unsigned int status = sony_nc_thermal_mode_get();
2246
2247         if (status != th_handle->mode)
2248                 sony_nc_thermal_mode_set(th_handle->mode);
2249 }
2250 #endif
2251
2252 /* resume on LID open */
2253 struct snc_lid_resume_control {
2254         struct device_attribute attrs[3];
2255         unsigned int status;
2256 };
2257 static struct snc_lid_resume_control *lid_ctl;
2258
2259 static ssize_t sony_nc_lid_resume_store(struct device *dev,
2260                                         struct device_attribute *attr,
2261                                         const char *buffer, size_t count)
2262 {
2263         unsigned int result, pos;
2264         unsigned long value;
2265         if (count > 31)
2266                 return -EINVAL;
2267
2268         if (kstrtoul(buffer, 10, &value) || value > 1)
2269                 return -EINVAL;
2270
2271         /* the value we have to write to SNC is a bitmask:
2272          * +--------------+
2273          * | S3 | S4 | S5 |
2274          * +--------------+
2275          *   2    1    0
2276          */
2277         if (strcmp(attr->attr.name, "lid_resume_S3") == 0)
2278                 pos = 2;
2279         else if (strcmp(attr->attr.name, "lid_resume_S4") == 0)
2280                 pos = 1;
2281         else if (strcmp(attr->attr.name, "lid_resume_S5") == 0)
2282                 pos = 0;
2283         else
2284                return -EINVAL;
2285
2286         if (value)
2287                 value = lid_ctl->status | (1 << pos);
2288         else
2289                 value = lid_ctl->status & ~(1 << pos);
2290
2291         if (sony_call_snc_handle(0x0119, value << 0x10 | 0x0100, &result))
2292                 return -EIO;
2293
2294         lid_ctl->status = value;
2295
2296         return count;
2297 }
2298
2299 static ssize_t sony_nc_lid_resume_show(struct device *dev,
2300                                        struct device_attribute *attr, char *buffer)
2301 {
2302         unsigned int pos;
2303
2304         if (strcmp(attr->attr.name, "lid_resume_S3") == 0)
2305                 pos = 2;
2306         else if (strcmp(attr->attr.name, "lid_resume_S4") == 0)
2307                 pos = 1;
2308         else if (strcmp(attr->attr.name, "lid_resume_S5") == 0)
2309                 pos = 0;
2310         else
2311                 return -EINVAL;
2312                
2313         return snprintf(buffer, PAGE_SIZE, "%d\n",
2314                         (lid_ctl->status >> pos) & 0x01);
2315 }
2316
2317 static int sony_nc_lid_resume_setup(struct platform_device *pd)
2318 {
2319         unsigned int result;
2320         int i;
2321
2322         if (sony_call_snc_handle(0x0119, 0x0000, &result))
2323                 return -EIO;
2324
2325         lid_ctl = kzalloc(sizeof(struct snc_lid_resume_control), GFP_KERNEL);
2326         if (!lid_ctl)
2327                 return -ENOMEM;
2328
2329         lid_ctl->status = result & 0x7;
2330
2331         sysfs_attr_init(&lid_ctl->attrs[0].attr);
2332         lid_ctl->attrs[0].attr.name = "lid_resume_S3";
2333         lid_ctl->attrs[0].attr.mode = S_IRUGO | S_IWUSR;
2334         lid_ctl->attrs[0].show = sony_nc_lid_resume_show;
2335         lid_ctl->attrs[0].store = sony_nc_lid_resume_store;
2336
2337         sysfs_attr_init(&lid_ctl->attrs[1].attr);
2338         lid_ctl->attrs[1].attr.name = "lid_resume_S4";
2339         lid_ctl->attrs[1].attr.mode = S_IRUGO | S_IWUSR;
2340         lid_ctl->attrs[1].show = sony_nc_lid_resume_show;
2341         lid_ctl->attrs[1].store = sony_nc_lid_resume_store;
2342
2343         sysfs_attr_init(&lid_ctl->attrs[2].attr);
2344         lid_ctl->attrs[2].attr.name = "lid_resume_S5";
2345         lid_ctl->attrs[2].attr.mode = S_IRUGO | S_IWUSR;
2346         lid_ctl->attrs[2].show = sony_nc_lid_resume_show;
2347         lid_ctl->attrs[2].store = sony_nc_lid_resume_store;
2348
2349         for (i = 0; i < 3; i++) {
2350                 result = device_create_file(&pd->dev, &lid_ctl->attrs[i]);
2351                 if (result)
2352                         goto liderror;
2353         }
2354
2355         return 0;
2356
2357 liderror:
2358         for (i--; i >= 0; i--)
2359                 device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2360
2361         kfree(lid_ctl);
2362         lid_ctl = NULL;
2363
2364         return result;
2365 }
2366
2367 static void sony_nc_lid_resume_cleanup(struct platform_device *pd)
2368 {
2369         int i;
2370
2371         if (lid_ctl) {
2372                 for (i = 0; i < 3; i++)
2373                         device_remove_file(&pd->dev, &lid_ctl->attrs[i]);
2374
2375                 kfree(lid_ctl);
2376                 lid_ctl = NULL;
2377         }
2378 }
2379
2380 /* GFX Switch position */
2381 enum gfx_switch {
2382         SPEED,
2383         STAMINA,
2384         AUTO
2385 };
2386 struct snc_gfx_switch_control {
2387         struct device_attribute attr;
2388         unsigned int handle;
2389 };
2390 static struct snc_gfx_switch_control *gfxs_ctl;
2391
2392 /* returns 0 for speed, 1 for stamina */
2393 static int __sony_nc_gfx_switch_status_get(void)
2394 {
2395         unsigned int result;
2396
2397         if (sony_call_snc_handle(gfxs_ctl->handle,
2398                                 gfxs_ctl->handle == 0x015B ? 0x0000 : 0x0100,
2399                                 &result))
2400                 return -EIO;
2401
2402         switch (gfxs_ctl->handle) {
2403         case 0x0146:
2404                 /* 1: discrete GFX (speed)
2405                  * 0: integrated GFX (stamina)
2406                  */
2407                 return result & 0x1 ? SPEED : STAMINA;
2408                 break;
2409         case 0x015B:
2410                 /* 0: discrete GFX (speed)
2411                  * 1: integrated GFX (stamina)
2412                  */
2413                 return result & 0x1 ? STAMINA : SPEED;
2414                 break;
2415         case 0x0128:
2416                 /* it's a more elaborated bitmask, for now:
2417                  * 2: integrated GFX (stamina)
2418                  * 0: discrete GFX (speed)
2419                  */
2420                 dprintk("GFX Status: 0x%x\n", result);
2421                 return result & 0x80 ? AUTO :
2422                         result & 0x02 ? STAMINA : SPEED;
2423                 break;
2424         }
2425         return -EINVAL;
2426 }
2427
2428 static ssize_t sony_nc_gfx_switch_status_show(struct device *dev,
2429                                        struct device_attribute *attr,
2430                                        char *buffer)
2431 {
2432         int pos = __sony_nc_gfx_switch_status_get();
2433
2434         if (pos < 0)
2435                 return pos;
2436
2437         return snprintf(buffer, PAGE_SIZE, "%s\n",
2438                                         pos == SPEED ? "speed" :
2439                                         pos == STAMINA ? "stamina" :
2440                                         pos == AUTO ? "auto" : "unknown");
2441 }
2442
2443 static int sony_nc_gfx_switch_setup(struct platform_device *pd,
2444                 unsigned int handle)
2445 {
2446         unsigned int result;
2447
2448         gfxs_ctl = kzalloc(sizeof(struct snc_gfx_switch_control), GFP_KERNEL);
2449         if (!gfxs_ctl)
2450                 return -ENOMEM;
2451
2452         gfxs_ctl->handle = handle;
2453
2454         sysfs_attr_init(&gfxs_ctl->attr.attr);
2455         gfxs_ctl->attr.attr.name = "gfx_switch_status";
2456         gfxs_ctl->attr.attr.mode = S_IRUGO;
2457         gfxs_ctl->attr.show = sony_nc_gfx_switch_status_show;
2458
2459         result = device_create_file(&pd->dev, &gfxs_ctl->attr);
2460         if (result)
2461                 goto gfxerror;
2462
2463         return 0;
2464
2465 gfxerror:
2466         kfree(gfxs_ctl);
2467         gfxs_ctl = NULL;
2468
2469         return result;
2470 }
2471
2472 static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
2473 {
2474         if (gfxs_ctl) {
2475                 device_remove_file(&pd->dev, &gfxs_ctl->attr);
2476
2477                 kfree(gfxs_ctl);
2478                 gfxs_ctl = NULL;
2479         }
2480 }
2481
2482 /* High speed charging function */
2483 static struct device_attribute *hsc_handle;
2484
2485 static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
2486                 struct device_attribute *attr,
2487                 const char *buffer, size_t count)
2488 {
2489         unsigned int result;
2490         unsigned long value;
2491
2492         if (count > 31)
2493                 return -EINVAL;
2494
2495         if (kstrtoul(buffer, 10, &value) || value > 1)
2496                 return -EINVAL;
2497
2498         if (sony_call_snc_handle(0x0131, value << 0x10 | 0x0200, &result))
2499                 return -EIO;
2500
2501         return count;
2502 }
2503
2504 static ssize_t sony_nc_highspeed_charging_show(struct device *dev,
2505                 struct device_attribute *attr, char *buffer)
2506 {
2507         unsigned int result;
2508
2509         if (sony_call_snc_handle(0x0131, 0x0100, &result))
2510                 return -EIO;
2511
2512         return snprintf(buffer, PAGE_SIZE, "%d\n", result & 0x01);
2513 }
2514
2515 static int sony_nc_highspeed_charging_setup(struct platform_device *pd)
2516 {
2517         unsigned int result;
2518
2519         if (sony_call_snc_handle(0x0131, 0x0000, &result) || !(result & 0x01)) {
2520                 /* some models advertise the handle but have no implementation
2521                  * for it
2522                  */
2523                 pr_info("No High Speed Charging capability found\n");
2524                 return 0;
2525         }
2526
2527         hsc_handle = kzalloc(sizeof(struct device_attribute), GFP_KERNEL);
2528         if (!hsc_handle)
2529                 return -ENOMEM;
2530
2531         sysfs_attr_init(&hsc_handle->attr);
2532         hsc_handle->attr.name = "battery_highspeed_charging";
2533         hsc_handle->attr.mode = S_IRUGO | S_IWUSR;
2534         hsc_handle->show = sony_nc_highspeed_charging_show;
2535         hsc_handle->store = sony_nc_highspeed_charging_store;
2536
2537         result = device_create_file(&pd->dev, hsc_handle);
2538         if (result) {
2539                 kfree(hsc_handle);
2540                 hsc_handle = NULL;
2541                 return result;
2542         }
2543
2544         return 0;
2545 }
2546
2547 static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
2548 {
2549         if (hsc_handle) {
2550                 device_remove_file(&pd->dev, hsc_handle);
2551                 kfree(hsc_handle);
2552                 hsc_handle = NULL;
2553         }
2554 }
2555
2556 /* Touchpad enable/disable */
2557 struct touchpad_control {
2558         struct device_attribute attr;
2559         int handle;
2560 };
2561 static struct touchpad_control *tp_ctl;
2562
2563 static ssize_t sony_nc_touchpad_store(struct device *dev,
2564                 struct device_attribute *attr, const char *buffer, size_t count)
2565 {
2566         unsigned int result;
2567         unsigned long value;
2568
2569         if (count > 31)
2570                 return -EINVAL;
2571
2572         if (kstrtoul(buffer, 10, &value) || value > 1)
2573                 return -EINVAL;
2574
2575         /* sysfs: 0 disabled, 1 enabled
2576          * EC: 0 enabled, 1 disabled
2577          */
2578         if (sony_call_snc_handle(tp_ctl->handle,
2579                                 (!value << 0x10) | 0x100, &result))
2580                 return -EIO;
2581
2582         return count;
2583 }
2584
2585 static ssize_t sony_nc_touchpad_show(struct device *dev,
2586                 struct device_attribute *attr, char *buffer)
2587 {
2588         unsigned int result;
2589
2590         if (sony_call_snc_handle(tp_ctl->handle, 0x000, &result))
2591                 return -EINVAL;
2592
2593         return snprintf(buffer, PAGE_SIZE, "%d\n", !(result & 0x01));
2594 }
2595
2596 static int sony_nc_touchpad_setup(struct platform_device *pd,
2597                 unsigned int handle)
2598 {
2599         int ret = 0;
2600
2601         tp_ctl = kzalloc(sizeof(struct touchpad_control), GFP_KERNEL);
2602         if (!tp_ctl)
2603                 return -ENOMEM;
2604
2605         tp_ctl->handle = handle;
2606
2607         sysfs_attr_init(&tp_ctl->attr.attr);
2608         tp_ctl->attr.attr.name = "touchpad";
2609         tp_ctl->attr.attr.mode = S_IRUGO | S_IWUSR;
2610         tp_ctl->attr.show = sony_nc_touchpad_show;
2611         tp_ctl->attr.store = sony_nc_touchpad_store;
2612
2613         ret = device_create_file(&pd->dev, &tp_ctl->attr);
2614         if (ret) {
2615                 kfree(tp_ctl);
2616                 tp_ctl = NULL;
2617         }
2618
2619         return ret;
2620 }
2621
2622 static void sony_nc_touchpad_cleanup(struct platform_device *pd)
2623 {
2624         if (tp_ctl) {
2625                 device_remove_file(&pd->dev, &tp_ctl->attr);
2626                 kfree(tp_ctl);
2627                 tp_ctl = NULL;
2628         }
2629 }
2630
2631 static void sony_nc_backlight_ng_read_limits(int handle,
2632                 struct sony_backlight_props *props)
2633 {
2634         u64 offset;
2635         int i;
2636         int lvl_table_len = 0;
2637         u8 min = 0xff, max = 0x00;
2638         unsigned char buffer[32] = { 0 };
2639
2640         props->handle = handle;
2641         props->offset = 0;
2642         props->maxlvl = 0xff;
2643
2644         offset = sony_find_snc_handle(handle);
2645
2646         /* try to read the boundaries from ACPI tables, if we fail the above
2647          * defaults should be reasonable
2648          */
2649         i = sony_nc_buffer_call(sony_nc_acpi_handle, "SN06", &offset, buffer,
2650                         32);
2651         if (i < 0)
2652                 return;
2653
2654         switch (handle) {
2655         case 0x012f:
2656         case 0x0137:
2657                 lvl_table_len = 9;
2658                 break;
2659         case 0x143:
2660         case 0x14b:
2661         case 0x14c:
2662                 lvl_table_len = 16;
2663                 break;
2664         }
2665
2666         /* the buffer lists brightness levels available, brightness levels are
2667          * from position 0 to 8 in the array, other values are used by ALS
2668          * control.
2669          */
2670         for (i = 0; i < lvl_table_len && i < ARRAY_SIZE(buffer); i++) {
2671
2672                 dprintk("Brightness level: %d\n", buffer[i]);
2673
2674                 if (!buffer[i])
2675                         break;
2676
2677                 if (buffer[i] > max)
2678                         max = buffer[i];
2679                 if (buffer[i] < min)
2680                         min = buffer[i];
2681         }
2682         props->offset = min;
2683         props->maxlvl = max;
2684         dprintk("Brightness levels: min=%d max=%d\n", props->offset,
2685                         props->maxlvl);
2686 }
2687
2688 static void sony_nc_backlight_setup(void)
2689 {
2690         int max_brightness = 0;
2691         const struct backlight_ops *ops = NULL;
2692         struct backlight_properties props;
2693
2694         if (sony_find_snc_handle(0x12f) >= 0) {
2695                 ops = &sony_backlight_ng_ops;
2696                 sony_bl_props.cmd_base = 0x0100;
2697                 sony_nc_backlight_ng_read_limits(0x12f, &sony_bl_props);
2698                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
2699
2700         } else if (sony_find_snc_handle(0x137) >= 0) {
2701                 ops = &sony_backlight_ng_ops;
2702                 sony_bl_props.cmd_base = 0x0100;
2703                 sony_nc_backlight_ng_read_limits(0x137, &sony_bl_props);
2704                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
2705
2706         } else if (sony_find_snc_handle(0x143) >= 0) {
2707                 ops = &sony_backlight_ng_ops;
2708                 sony_bl_props.cmd_base = 0x3000;
2709                 sony_nc_backlight_ng_read_limits(0x143, &sony_bl_props);
2710                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
2711
2712         } else if (sony_find_snc_handle(0x14b) >= 0) {
2713                 ops = &sony_backlight_ng_ops;
2714                 sony_bl_props.cmd_base = 0x3000;
2715                 sony_nc_backlight_ng_read_limits(0x14b, &sony_bl_props);
2716                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
2717
2718         } else if (sony_find_snc_handle(0x14c) >= 0) {
2719                 ops = &sony_backlight_ng_ops;
2720                 sony_bl_props.cmd_base = 0x3000;
2721                 sony_nc_backlight_ng_read_limits(0x14c, &sony_bl_props);
2722                 max_brightness = sony_bl_props.maxlvl - sony_bl_props.offset;
2723
2724         } else if (acpi_has_method(sony_nc_acpi_handle, "GBRT")) {
2725                 ops = &sony_backlight_ops;
2726                 max_brightness = SONY_MAX_BRIGHTNESS - 1;
2727
2728         } else
2729                 return;
2730
2731         memset(&props, 0, sizeof(struct backlight_properties));
2732         props.type = BACKLIGHT_PLATFORM;
2733         props.max_brightness = max_brightness;
2734         sony_bl_props.dev = backlight_device_register("sony", NULL,
2735                                                       &sony_bl_props,
2736                                                       ops, &props);
2737
2738         if (IS_ERR(sony_bl_props.dev)) {
2739                 pr_warn("unable to register backlight device\n");
2740                 sony_bl_props.dev = NULL;
2741         } else
2742                 sony_bl_props.dev->props.brightness =
2743                         ops->get_brightness(sony_bl_props.dev);
2744 }
2745
2746 static void sony_nc_backlight_cleanup(void)
2747 {
2748         if (sony_bl_props.dev)
2749                 backlight_device_unregister(sony_bl_props.dev);
2750 }
2751
2752 static int sony_nc_add(struct acpi_device *device)
2753 {
2754         acpi_status status;
2755         int result = 0;
2756         struct sony_nc_value *item;
2757
2758         pr_info("%s v%s\n", SONY_NC_DRIVER_NAME, SONY_LAPTOP_DRIVER_VERSION);
2759
2760         sony_nc_acpi_device = device;
2761         strcpy(acpi_device_class(device), "sony/hotkey");
2762
2763         sony_nc_acpi_handle = device->handle;
2764
2765         /* read device status */
2766         result = acpi_bus_get_status(device);
2767         /* bail IFF the above call was successful and the device is not present */
2768         if (!result && !device->status.present) {
2769                 dprintk("Device not present\n");
2770                 result = -ENODEV;
2771                 goto outwalk;
2772         }
2773
2774         result = sony_pf_add();
2775         if (result)
2776                 goto outpresent;
2777
2778         if (debug) {
2779                 status = acpi_walk_namespace(ACPI_TYPE_METHOD,
2780                                 sony_nc_acpi_handle, 1, sony_walk_callback,
2781                                 NULL, NULL, NULL);
2782                 if (ACPI_FAILURE(status)) {
2783                         pr_warn("unable to walk acpi resources\n");
2784                         result = -ENODEV;
2785                         goto outpresent;
2786                 }
2787         }
2788
2789         result = sony_laptop_setup_input(device);
2790         if (result) {
2791                 pr_err("Unable to create input devices\n");
2792                 goto outplatform;
2793         }
2794
2795         if (acpi_has_method(sony_nc_acpi_handle, "ECON")) {
2796                 int arg = 1;
2797                 if (sony_nc_int_call(sony_nc_acpi_handle, "ECON", &arg, NULL))
2798                         dprintk("ECON Method failed\n");
2799         }
2800
2801         if (acpi_has_method(sony_nc_acpi_handle, "SN00")) {
2802                 dprintk("Doing SNC setup\n");
2803                 /* retrieve the available handles */
2804                 result = sony_nc_handles_setup(sony_pf_device);
2805                 if (!result)
2806                         sony_nc_function_setup(device, sony_pf_device);
2807         }
2808
2809         /* setup input devices and helper fifo */
2810         if (acpi_video_backlight_support()) {
2811                 pr_info("brightness ignored, must be controlled by ACPI video driver\n");
2812         } else {
2813                 sony_nc_backlight_setup();
2814         }
2815
2816         /* create sony_pf sysfs attributes related to the SNC device */
2817         for (item = sony_nc_values; item->name; ++item) {
2818
2819                 if (!debug && item->debug)
2820                         continue;
2821
2822                 /* find the available acpiget as described in the DSDT */
2823                 for (; item->acpiget && *item->acpiget; ++item->acpiget) {
2824                         if (acpi_has_method(sony_nc_acpi_handle,
2825                                                         *item->acpiget)) {
2826                                 dprintk("Found %s getter: %s\n",
2827                                                 item->name, *item->acpiget);
2828                                 item->devattr.attr.mode |= S_IRUGO;
2829                                 break;
2830                         }
2831                 }
2832
2833                 /* find the available acpiset as described in the DSDT */
2834                 for (; item->acpiset && *item->acpiset; ++item->acpiset) {
2835                         if (acpi_has_method(sony_nc_acpi_handle,
2836                                                         *item->acpiset)) {
2837                                 dprintk("Found %s setter: %s\n",
2838                                                 item->name, *item->acpiset);
2839                                 item->devattr.attr.mode |= S_IWUSR;
2840                                 break;
2841                         }
2842                 }
2843
2844                 if (item->devattr.attr.mode != 0) {
2845                         result =
2846                             device_create_file(&sony_pf_device->dev,
2847                                                &item->devattr);
2848                         if (result)
2849                                 goto out_sysfs;
2850                 }
2851         }
2852
2853         return 0;
2854
2855 out_sysfs:
2856         for (item = sony_nc_values; item->name; ++item) {
2857                 device_remove_file(&sony_pf_device->dev, &item->devattr);
2858         }
2859         sony_nc_backlight_cleanup();
2860         sony_nc_function_cleanup(sony_pf_device);
2861         sony_nc_handles_cleanup(sony_pf_device);
2862
2863 outplatform:
2864         sony_laptop_remove_input();
2865
2866 outpresent:
2867         sony_pf_remove();
2868
2869 outwalk:
2870         sony_nc_rfkill_cleanup();
2871         return result;
2872 }
2873
2874 static int sony_nc_remove(struct acpi_device *device)
2875 {
2876         struct sony_nc_value *item;
2877
2878         sony_nc_backlight_cleanup();
2879
2880         sony_nc_acpi_device = NULL;
2881
2882         for (item = sony_nc_values; item->name; ++item) {
2883                 device_remove_file(&sony_pf_device->dev, &item->devattr);
2884         }
2885
2886         sony_nc_function_cleanup(sony_pf_device);
2887         sony_nc_handles_cleanup(sony_pf_device);
2888         sony_pf_remove();
2889         sony_laptop_remove_input();
2890         dprintk(SONY_NC_DRIVER_NAME " removed.\n");
2891
2892         return 0;
2893 }
2894
2895 static const struct acpi_device_id sony_device_ids[] = {
2896         {SONY_NC_HID, 0},
2897         {SONY_PIC_HID, 0},
2898         {"", 0},
2899 };
2900 MODULE_DEVICE_TABLE(acpi, sony_device_ids);
2901
2902 static const struct acpi_device_id sony_nc_device_ids[] = {
2903         {SONY_NC_HID, 0},
2904         {"", 0},
2905 };
2906
2907 static struct acpi_driver sony_nc_driver = {
2908         .name = SONY_NC_DRIVER_NAME,
2909         .class = SONY_NC_CLASS,
2910         .ids = sony_nc_device_ids,
2911         .owner = THIS_MODULE,
2912         .ops = {
2913                 .add = sony_nc_add,
2914                 .remove = sony_nc_remove,
2915                 .notify = sony_nc_notify,
2916                 },
2917         .drv.pm = &sony_nc_pm,
2918 };
2919
2920 /*********** SPIC (SNY6001) Device ***********/
2921
2922 #define SONYPI_DEVICE_TYPE1     0x00000001
2923 #define SONYPI_DEVICE_TYPE2     0x00000002
2924 #define SONYPI_DEVICE_TYPE3     0x00000004
2925
2926 #define SONYPI_TYPE1_OFFSET     0x04
2927 #define SONYPI_TYPE2_OFFSET     0x12
2928 #define SONYPI_TYPE3_OFFSET     0x12
2929
2930 struct sony_pic_ioport {
2931         struct acpi_resource_io io1;
2932         struct acpi_resource_io io2;
2933         struct list_head        list;
2934 };
2935
2936 struct sony_pic_irq {
2937         struct acpi_resource_irq        irq;
2938         struct list_head                list;
2939 };
2940
2941 struct sonypi_eventtypes {
2942         u8                      data;
2943         unsigned long           mask;
2944         struct sonypi_event     *events;
2945 };
2946
2947 struct sony_pic_dev {
2948         struct acpi_device              *acpi_dev;
2949         struct sony_pic_irq             *cur_irq;
2950         struct sony_pic_ioport          *cur_ioport;
2951         struct list_head                interrupts;
2952         struct list_head                ioports;
2953         struct mutex                    lock;
2954         struct sonypi_eventtypes        *event_types;
2955         int                             (*handle_irq)(const u8, const u8);
2956         int                             model;
2957         u16                             evport_offset;
2958         u8                              camera_power;
2959         u8                              bluetooth_power;
2960         u8                              wwan_power;
2961 };
2962
2963 static struct sony_pic_dev spic_dev = {
2964         .interrupts     = LIST_HEAD_INIT(spic_dev.interrupts),
2965         .ioports        = LIST_HEAD_INIT(spic_dev.ioports),
2966 };
2967
2968 static int spic_drv_registered;
2969
2970 /* Event masks */
2971 #define SONYPI_JOGGER_MASK                      0x00000001
2972 #define SONYPI_CAPTURE_MASK                     0x00000002
2973 #define SONYPI_FNKEY_MASK                       0x00000004
2974 #define SONYPI_BLUETOOTH_MASK                   0x00000008
2975 #define SONYPI_PKEY_MASK                        0x00000010
2976 #define SONYPI_BACK_MASK                        0x00000020
2977 #define SONYPI_HELP_MASK                        0x00000040
2978 #define SONYPI_LID_MASK                         0x00000080
2979 #define SONYPI_ZOOM_MASK                        0x00000100
2980 #define SONYPI_THUMBPHRASE_MASK                 0x00000200
2981 #define SONYPI_MEYE_MASK                        0x00000400
2982 #define SONYPI_MEMORYSTICK_MASK                 0x00000800
2983 #define SONYPI_BATTERY_MASK                     0x00001000
2984 #define SONYPI_WIRELESS_MASK                    0x00002000
2985
2986 struct sonypi_event {
2987         u8      data;
2988         u8      event;
2989 };
2990
2991 /* The set of possible button release events */
2992 static struct sonypi_event sonypi_releaseev[] = {
2993         { 0x00, SONYPI_EVENT_ANYBUTTON_RELEASED },
2994         { 0, 0 }
2995 };
2996
2997 /* The set of possible jogger events  */
2998 static struct sonypi_event sonypi_joggerev[] = {
2999         { 0x1f, SONYPI_EVENT_JOGDIAL_UP },
3000         { 0x01, SONYPI_EVENT_JOGDIAL_DOWN },
3001         { 0x5f, SONYPI_EVENT_JOGDIAL_UP_PRESSED },
3002         { 0x41, SONYPI_EVENT_JOGDIAL_DOWN_PRESSED },
3003         { 0x1e, SONYPI_EVENT_JOGDIAL_FAST_UP },
3004         { 0x02, SONYPI_EVENT_JOGDIAL_FAST_DOWN },
3005         { 0x5e, SONYPI_EVENT_JOGDIAL_FAST_UP_PRESSED },
3006         { 0x42, SONYPI_EVENT_JOGDIAL_FAST_DOWN_PRESSED },
3007         { 0x1d, SONYPI_EVENT_JOGDIAL_VFAST_UP },
3008         { 0x03, SONYPI_EVENT_JOGDIAL_VFAST_DOWN },
3009         { 0x5d, SONYPI_EVENT_JOGDIAL_VFAST_UP_PRESSED },
3010         { 0x43, SONYPI_EVENT_JOGDIAL_VFAST_DOWN_PRESSED },
3011         { 0x40, SONYPI_EVENT_JOGDIAL_PRESSED },
3012         { 0, 0 }
3013 };
3014
3015 /* The set of possible capture button events */
3016 static struct sonypi_event sonypi_captureev[] = {
3017         { 0x05, SONYPI_EVENT_CAPTURE_PARTIALPRESSED },
3018         { 0x07, SONYPI_EVENT_CAPTURE_PRESSED },
3019         { 0x40, SONYPI_EVENT_CAPTURE_PRESSED },
3020         { 0x01, SONYPI_EVENT_CAPTURE_PARTIALRELEASED },
3021         { 0, 0 }
3022 };
3023
3024 /* The set of possible fnkeys events */
3025 static struct sonypi_event sonypi_fnkeyev[] = {
3026         { 0x10, SONYPI_EVENT_FNKEY_ESC },
3027         { 0x11, SONYPI_EVENT_FNKEY_F1 },
3028         { 0x12, SONYPI_EVENT_FNKEY_F2 },
3029         { 0x13, SONYPI_EVENT_FNKEY_F3 },
3030         { 0x14, SONYPI_EVENT_FNKEY_F4 },
3031         { 0x15, SONYPI_EVENT_FNKEY_F5 },
3032         { 0x16, SONYPI_EVENT_FNKEY_F6 },
3033         { 0x17, SONYPI_EVENT_FNKEY_F7 },
3034         { 0x18, SONYPI_EVENT_FNKEY_F8 },
3035         { 0x19, SONYPI_EVENT_FNKEY_F9 },
3036         { 0x1a, SONYPI_EVENT_FNKEY_F10 },
3037         { 0x1b, SONYPI_EVENT_FNKEY_F11 },
3038         { 0x1c, SONYPI_EVENT_FNKEY_F12 },
3039         { 0x1f, SONYPI_EVENT_FNKEY_RELEASED },
3040         { 0x21, SONYPI_EVENT_FNKEY_1 },
3041         { 0x22, SONYPI_EVENT_FNKEY_2 },
3042         { 0x31, SONYPI_EVENT_FNKEY_D },
3043         { 0x32, SONYPI_EVENT_FNKEY_E },
3044         { 0x33, SONYPI_EVENT_FNKEY_F },
3045         { 0x34, SONYPI_EVENT_FNKEY_S },
3046         { 0x35, SONYPI_EVENT_FNKEY_B },
3047         { 0x36, SONYPI_EVENT_FNKEY_ONLY },
3048         { 0, 0 }
3049 };
3050
3051 /* The set of possible program key events */
3052 static struct sonypi_event sonypi_pkeyev[] = {
3053         { 0x01, SONYPI_EVENT_PKEY_P1 },
3054         { 0x02, SONYPI_EVENT_PKEY_P2 },
3055         { 0x04, SONYPI_EVENT_PKEY_P3 },
3056         { 0x20, SONYPI_EVENT_PKEY_P1 },
3057         { 0, 0 }
3058 };
3059
3060 /* The set of possible bluetooth events */
3061 static struct sonypi_event sonypi_blueev[] = {
3062         { 0x55, SONYPI_EVENT_BLUETOOTH_PRESSED },
3063         { 0x59, SONYPI_EVENT_BLUETOOTH_ON },
3064         { 0x5a, SONYPI_EVENT_BLUETOOTH_OFF },
3065         { 0, 0 }
3066 };
3067
3068 /* The set of possible wireless events */
3069 static struct sonypi_event sonypi_wlessev[] = {
3070         { 0x59, SONYPI_EVENT_IGNORE },
3071         { 0x5a, SONYPI_EVENT_IGNORE },
3072         { 0, 0 }
3073 };
3074
3075 /* The set of possible back button events */
3076 static struct sonypi_event sonypi_backev[] = {
3077         { 0x20, SONYPI_EVENT_BACK_PRESSED },
3078         { 0, 0 }
3079 };
3080
3081 /* The set of possible help button events */
3082 static struct sonypi_event sonypi_helpev[] = {
3083         { 0x3b, SONYPI_EVENT_HELP_PRESSED },
3084         { 0, 0 }
3085 };
3086
3087
3088 /* The set of possible lid events */
3089 static struct sonypi_event sonypi_lidev[] = {
3090         { 0x51, SONYPI_EVENT_LID_CLOSED },
3091         { 0x50, SONYPI_EVENT_LID_OPENED },
3092         { 0, 0 }
3093 };
3094
3095 /* The set of possible zoom events */
3096 static struct sonypi_event sonypi_zoomev[] = {
3097         { 0x39, SONYPI_EVENT_ZOOM_PRESSED },
3098         { 0x10, SONYPI_EVENT_ZOOM_IN_PRESSED },
3099         { 0x20, SONYPI_EVENT_ZOOM_OUT_PRESSED },
3100         { 0x04, SONYPI_EVENT_ZOOM_PRESSED },
3101         { 0, 0 }
3102 };
3103
3104 /* The set of possible thumbphrase events */
3105 static struct sonypi_event sonypi_thumbphraseev[] = {
3106         { 0x3a, SONYPI_EVENT_THUMBPHRASE_PRESSED },
3107         { 0, 0 }
3108 };
3109
3110 /* The set of possible motioneye camera events */
3111 static struct sonypi_event sonypi_meyeev[] = {
3112         { 0x00, SONYPI_EVENT_MEYE_FACE },
3113         { 0x01, SONYPI_EVENT_MEYE_OPPOSITE },
3114         { 0, 0 }
3115 };
3116
3117 /* The set of possible memorystick events */
3118 static struct sonypi_event sonypi_memorystickev[] = {
3119         { 0x53, SONYPI_EVENT_MEMORYSTICK_INSERT },
3120         { 0x54, SONYPI_EVENT_MEMORYSTICK_EJECT },
3121         { 0, 0 }
3122 };
3123
3124 /* The set of possible battery events */
3125 static struct sonypi_event sonypi_batteryev[] = {
3126         { 0x20, SONYPI_EVENT_BATTERY_INSERT },
3127         { 0x30, SONYPI_EVENT_BATTERY_REMOVE },
3128         { 0, 0 }
3129 };
3130
3131 /* The set of possible volume events */
3132 static struct sonypi_event sonypi_volumeev[] = {
3133         { 0x01, SONYPI_EVENT_VOLUME_INC_PRESSED },
3134         { 0x02, SONYPI_EVENT_VOLUME_DEC_PRESSED },
3135         { 0, 0 }
3136 };
3137
3138 /* The set of possible brightness events */
3139 static struct sonypi_event sonypi_brightnessev[] = {
3140         { 0x80, SONYPI_EVENT_BRIGHTNESS_PRESSED },
3141         { 0, 0 }
3142 };
3143
3144 static struct sonypi_eventtypes type1_events[] = {
3145         { 0, 0xffffffff, sonypi_releaseev },
3146         { 0x70, SONYPI_MEYE_MASK, sonypi_meyeev },
3147         { 0x30, SONYPI_LID_MASK, sonypi_lidev },
3148         { 0x60, SONYPI_CAPTURE_MASK, sonypi_captureev },
3149         { 0x10, SONYPI_JOGGER_MASK, sonypi_joggerev },
3150         { 0x20, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3151         { 0x30, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3152         { 0x40, SONYPI_PKEY_MASK, sonypi_pkeyev },
3153         { 0x30, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3154         { 0x40, SONYPI_BATTERY_MASK, sonypi_batteryev },
3155         { 0 },
3156 };
3157 static struct sonypi_eventtypes type2_events[] = {
3158         { 0, 0xffffffff, sonypi_releaseev },
3159         { 0x38, SONYPI_LID_MASK, sonypi_lidev },
3160         { 0x11, SONYPI_JOGGER_MASK, sonypi_joggerev },
3161         { 0x61, SONYPI_CAPTURE_MASK, sonypi_captureev },
3162         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3163         { 0x31, SONYPI_BLUETOOTH_MASK, sonypi_blueev },
3164         { 0x08, SONYPI_PKEY_MASK, sonypi_pkeyev },
3165         { 0x11, SONYPI_BACK_MASK, sonypi_backev },
3166         { 0x21, SONYPI_HELP_MASK, sonypi_helpev },
3167         { 0x21, SONYPI_ZOOM_MASK, sonypi_zoomev },
3168         { 0x20, SONYPI_THUMBPHRASE_MASK, sonypi_thumbphraseev },
3169         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3170         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3171         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3172         { 0 },
3173 };
3174 static struct sonypi_eventtypes type3_events[] = {
3175         { 0, 0xffffffff, sonypi_releaseev },
3176         { 0x21, SONYPI_FNKEY_MASK, sonypi_fnkeyev },
3177         { 0x31, SONYPI_WIRELESS_MASK, sonypi_wlessev },
3178         { 0x31, SONYPI_MEMORYSTICK_MASK, sonypi_memorystickev },
3179         { 0x41, SONYPI_BATTERY_MASK, sonypi_batteryev },
3180         { 0x31, SONYPI_PKEY_MASK, sonypi_pkeyev },
3181         { 0x05, SONYPI_PKEY_MASK, sonypi_pkeyev },
3182         { 0x05, SONYPI_ZOOM_MASK, sonypi_zoomev },
3183         { 0x05, SONYPI_CAPTURE_MASK, sonypi_captureev },
3184         { 0x05, SONYPI_PKEY_MASK, sonypi_volumeev },
3185         { 0x05, SONYPI_PKEY_MASK, sonypi_brightnessev },
3186         { 0 },
3187 };
3188
3189 /* low level spic calls */
3190 #define ITERATIONS_LONG         10000
3191 #define ITERATIONS_SHORT        10
3192 #define wait_on_command(command, iterations) {                          \
3193         unsigned int n = iterations;                                    \
3194         while (--n && (command))                                        \
3195                 udelay(1);                                              \
3196         if (!n)                                                         \
3197                 dprintk("command failed at %s : %s (line %d)\n",        \
3198                                 __FILE__, __func__, __LINE__);  \
3199 }
3200
3201 static u8 sony_pic_call1(u8 dev)
3202 {
3203         u8 v1, v2;
3204
3205         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3206                         ITERATIONS_LONG);
3207         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3208         v1 = inb_p(spic_dev.cur_ioport->io1.minimum + 4);
3209         v2 = inb_p(spic_dev.cur_ioport->io1.minimum);
3210         dprintk("sony_pic_call1(0x%.2x): 0x%.4x\n", dev, (v2 << 8) | v1);
3211         return v2;
3212 }
3213
3214 static u8 sony_pic_call2(u8 dev, u8 fn)
3215 {
3216         u8 v1;
3217
3218         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3219                         ITERATIONS_LONG);
3220         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3221         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2,
3222                         ITERATIONS_LONG);
3223         outb(fn, spic_dev.cur_ioport->io1.minimum);
3224         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3225         dprintk("sony_pic_call2(0x%.2x - 0x%.2x): 0x%.4x\n", dev, fn, v1);
3226         return v1;
3227 }
3228
3229 static u8 sony_pic_call3(u8 dev, u8 fn, u8 v)
3230 {
3231         u8 v1;
3232
3233         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3234         outb(dev, spic_dev.cur_ioport->io1.minimum + 4);
3235         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3236         outb(fn, spic_dev.cur_ioport->io1.minimum);
3237         wait_on_command(inb_p(spic_dev.cur_ioport->io1.minimum + 4) & 2, ITERATIONS_LONG);
3238         outb(v, spic_dev.cur_ioport->io1.minimum);
3239         v1 = inb_p(spic_dev.cur_ioport->io1.minimum);
3240         dprintk("sony_pic_call3(0x%.2x - 0x%.2x - 0x%.2x): 0x%.4x\n",
3241                         dev, fn, v, v1);
3242         return v1;
3243 }
3244
3245 /*
3246  * minidrivers for SPIC models
3247  */
3248 static int type3_handle_irq(const u8 data_mask, const u8 ev)
3249 {
3250         /*
3251          * 0x31 could mean we have to take some extra action and wait for
3252          * the next irq for some Type3 models, it will generate a new
3253          * irq and we can read new data from the device:
3254          *  - 0x5c and 0x5f requires 0xA0
3255          *  - 0x61 requires 0xB3
3256          */
3257         if (data_mask == 0x31) {
3258                 if (ev == 0x5c || ev == 0x5f)
3259                         sony_pic_call1(0xA0);
3260                 else if (ev == 0x61)
3261                         sony_pic_call1(0xB3);
3262                 return 0;
3263         }
3264         return 1;
3265 }
3266
3267 static void sony_pic_detect_device_type(struct sony_pic_dev *dev)
3268 {
3269         struct pci_dev *pcidev;
3270
3271         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3272                         PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
3273         if (pcidev) {
3274                 dev->model = SONYPI_DEVICE_TYPE1;
3275                 dev->evport_offset = SONYPI_TYPE1_OFFSET;
3276                 dev->event_types = type1_events;
3277                 goto out;
3278         }
3279
3280         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3281                         PCI_DEVICE_ID_INTEL_ICH6_1, NULL);
3282         if (pcidev) {
3283                 dev->model = SONYPI_DEVICE_TYPE2;
3284                 dev->evport_offset = SONYPI_TYPE2_OFFSET;
3285                 dev->event_types = type2_events;
3286                 goto out;
3287         }
3288
3289         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3290                         PCI_DEVICE_ID_INTEL_ICH7_1, NULL);
3291         if (pcidev) {
3292                 dev->model = SONYPI_DEVICE_TYPE3;
3293                 dev->handle_irq = type3_handle_irq;
3294                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3295                 dev->event_types = type3_events;
3296                 goto out;
3297         }
3298
3299         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3300                         PCI_DEVICE_ID_INTEL_ICH8_4, NULL);
3301         if (pcidev) {
3302                 dev->model = SONYPI_DEVICE_TYPE3;
3303                 dev->handle_irq = type3_handle_irq;
3304                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3305                 dev->event_types = type3_events;
3306                 goto out;
3307         }
3308
3309         pcidev = pci_get_device(PCI_VENDOR_ID_INTEL,
3310                         PCI_DEVICE_ID_INTEL_ICH9_1, NULL);
3311         if (pcidev) {
3312                 dev->model = SONYPI_DEVICE_TYPE3;
3313                 dev->handle_irq = type3_handle_irq;
3314                 dev->evport_offset = SONYPI_TYPE3_OFFSET;
3315                 dev->event_types = type3_events;
3316                 goto out;
3317         }
3318
3319         /* default */
3320         dev->model = SONYPI_DEVICE_TYPE2;
3321         dev->evport_offset = SONYPI_TYPE2_OFFSET;
3322         dev->event_types = type2_events;
3323
3324 out:
3325         if (pcidev)
3326                 pci_dev_put(pcidev);
3327
3328         pr_info("detected Type%d model\n",
3329                 dev->model == SONYPI_DEVICE_TYPE1 ? 1 :
3330                 dev->model == SONYPI_DEVICE_TYPE2 ? 2 : 3);
3331 }
3332
3333 /* camera tests and poweron/poweroff */
3334 #define SONYPI_CAMERA_PICTURE           5
3335 #define SONYPI_CAMERA_CONTROL           0x10
3336
3337 #define SONYPI_CAMERA_BRIGHTNESS                0
3338 #define SONYPI_CAMERA_CONTRAST                  1
3339 #define SONYPI_CAMERA_HUE                       2
3340 #define SONYPI_CAMERA_COLOR                     3
3341 #define SONYPI_CAMERA_SHARPNESS                 4
3342
3343 #define SONYPI_CAMERA_EXPOSURE_MASK             0xC
3344 #define SONYPI_CAMERA_WHITE_BALANCE_MASK        0x3
3345 #define SONYPI_CAMERA_PICTURE_MODE_MASK         0x30
3346 #define SONYPI_CAMERA_MUTE_MASK                 0x40
3347
3348 /* the rest don't need a loop until not 0xff */
3349 #define SONYPI_CAMERA_AGC                       6
3350 #define SONYPI_CAMERA_AGC_MASK                  0x30
3351 #define SONYPI_CAMERA_SHUTTER_MASK              0x7
3352
3353 #define SONYPI_CAMERA_SHUTDOWN_REQUEST          7
3354 #define SONYPI_CAMERA_CONTROL                   0x10
3355
3356 #define SONYPI_CAMERA_STATUS                    7
3357 #define SONYPI_CAMERA_STATUS_READY              0x2
3358 #define SONYPI_CAMERA_STATUS_POSITION           0x4
3359
3360 #define SONYPI_DIRECTION_BACKWARDS              0x4
3361
3362 #define SONYPI_CAMERA_REVISION                  8
3363 #define SONYPI_CAMERA_ROMVERSION                9
3364
3365 static int __sony_pic_camera_ready(void)
3366 {
3367         u8 v;
3368
3369         v = sony_pic_call2(0x8f, SONYPI_CAMERA_STATUS);
3370         return (v != 0xff && (v & SONYPI_CAMERA_STATUS_READY));
3371 }
3372
3373 static int __sony_pic_camera_off(void)
3374 {
3375         if (!camera) {
3376                 pr_warn("camera control not enabled\n");
3377                 return -ENODEV;
3378         }
3379
3380         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE,
3381                                 SONYPI_CAMERA_MUTE_MASK),
3382                         ITERATIONS_SHORT);
3383
3384         if (spic_dev.camera_power) {
3385                 sony_pic_call2(0x91, 0);
3386                 spic_dev.camera_power = 0;
3387         }
3388         return 0;
3389 }
3390
3391 static int __sony_pic_camera_on(void)
3392 {
3393         int i, j, x;
3394
3395         if (!camera) {
3396                 pr_warn("camera control not enabled\n");
3397                 return -ENODEV;
3398         }
3399
3400         if (spic_dev.camera_power)
3401                 return 0;
3402
3403         for (j = 5; j > 0; j--) {
3404
3405                 for (x = 0; x < 100 && sony_pic_call2(0x91, 0x1); x++)
3406                         msleep(10);
3407                 sony_pic_call1(0x93);
3408
3409                 for (i = 400; i > 0; i--) {
3410                         if (__sony_pic_camera_ready())
3411                                 break;
3412                         msleep(10);
3413                 }
3414                 if (i)
3415                         break;
3416         }
3417
3418         if (j == 0) {
3419                 pr_warn("failed to power on camera\n");
3420                 return -ENODEV;
3421         }
3422
3423         wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTROL,
3424                                 0x5a),
3425                         ITERATIONS_SHORT);
3426
3427         spic_dev.camera_power = 1;
3428         return 0;
3429 }
3430
3431 /* External camera command (exported to the motion eye v4l driver) */
3432 int sony_pic_camera_command(int command, u8 value)
3433 {
3434         if (!camera)
3435                 return -EIO;
3436
3437         mutex_lock(&spic_dev.lock);
3438
3439         switch (command) {
3440         case SONY_PIC_COMMAND_SETCAMERA:
3441                 if (value)
3442                         __sony_pic_camera_on();
3443                 else
3444                         __sony_pic_camera_off();
3445                 break;
3446         case SONY_PIC_COMMAND_SETCAMERABRIGHTNESS:
3447                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_BRIGHTNESS, value),
3448                                 ITERATIONS_SHORT);
3449                 break;
3450         case SONY_PIC_COMMAND_SETCAMERACONTRAST:
3451                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_CONTRAST, value),
3452                                 ITERATIONS_SHORT);
3453                 break;
3454         case SONY_PIC_COMMAND_SETCAMERAHUE:
3455                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_HUE, value),
3456                                 ITERATIONS_SHORT);
3457                 break;
3458         case SONY_PIC_COMMAND_SETCAMERACOLOR:
3459                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_COLOR, value),
3460                                 ITERATIONS_SHORT);
3461                 break;
3462         case SONY_PIC_COMMAND_SETCAMERASHARPNESS:
3463                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_SHARPNESS, value),
3464                                 ITERATIONS_SHORT);
3465                 break;
3466         case SONY_PIC_COMMAND_SETCAMERAPICTURE:
3467                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_PICTURE, value),
3468                                 ITERATIONS_SHORT);
3469                 break;
3470         case SONY_PIC_COMMAND_SETCAMERAAGC:
3471                 wait_on_command(sony_pic_call3(0x90, SONYPI_CAMERA_AGC, value),
3472                                 ITERATIONS_SHORT);
3473                 break;
3474         default:
3475                 pr_err("sony_pic_camera_command invalid: %d\n", command);
3476                 break;
3477         }
3478         mutex_unlock(&spic_dev.lock);
3479         return 0;
3480 }
3481 EXPORT_SYMBOL(sony_pic_camera_command);
3482
3483 /* gprs/edge modem (SZ460N and SZ210P), thanks to Joshua Wise */
3484 static void __sony_pic_set_wwanpower(u8 state)
3485 {
3486         state = !!state;
3487         if (spic_dev.wwan_power == state)
3488                 return;
3489         sony_pic_call2(0xB0, state);
3490         sony_pic_call1(0x82);
3491         spic_dev.wwan_power = state;
3492 }
3493
3494 static ssize_t sony_pic_wwanpower_store(struct device *dev,
3495                 struct device_attribute *attr,
3496                 const char *buffer, size_t count)
3497 {
3498         unsigned long value;
3499         if (count > 31)
3500                 return -EINVAL;
3501
3502         if (kstrtoul(buffer, 10, &value))
3503                 return -EINVAL;
3504
3505         mutex_lock(&spic_dev.lock);
3506         __sony_pic_set_wwanpower(value);
3507         mutex_unlock(&spic_dev.lock);
3508
3509         return count;
3510 }
3511
3512 static ssize_t sony_pic_wwanpower_show(struct device *dev,
3513                 struct device_attribute *attr, char *buffer)
3514 {
3515         ssize_t count;
3516         mutex_lock(&spic_dev.lock);
3517         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.wwan_power);
3518         mutex_unlock(&spic_dev.lock);
3519         return count;
3520 }
3521
3522 /* bluetooth subsystem power state */
3523 static void __sony_pic_set_bluetoothpower(u8 state)
3524 {
3525         state = !!state;
3526         if (spic_dev.bluetooth_power == state)
3527                 return;
3528         sony_pic_call2(0x96, state);
3529         sony_pic_call1(0x82);
3530         spic_dev.bluetooth_power = state;
3531 }
3532
3533 static ssize_t sony_pic_bluetoothpower_store(struct device *dev,
3534                 struct device_attribute *attr,
3535                 const char *buffer, size_t count)
3536 {
3537         unsigned long value;
3538         if (count > 31)
3539                 return -EINVAL;
3540
3541         if (kstrtoul(buffer, 10, &value))
3542                 return -EINVAL;
3543
3544         mutex_lock(&spic_dev.lock);
3545         __sony_pic_set_bluetoothpower(value);
3546         mutex_unlock(&spic_dev.lock);
3547
3548         return count;
3549 }
3550
3551 static ssize_t sony_pic_bluetoothpower_show(struct device *dev,
3552                 struct device_attribute *attr, char *buffer)
3553 {
3554         ssize_t count = 0;
3555         mutex_lock(&spic_dev.lock);
3556         count = snprintf(buffer, PAGE_SIZE, "%d\n", spic_dev.bluetooth_power);
3557         mutex_unlock(&spic_dev.lock);
3558         return count;
3559 }
3560
3561 /* fan speed */
3562 /* FAN0 information (reverse engineered from ACPI tables) */
3563 #define SONY_PIC_FAN0_STATUS    0x93
3564 static int sony_pic_set_fanspeed(unsigned long value)
3565 {
3566         return ec_write(SONY_PIC_FAN0_STATUS, value);
3567 }
3568
3569 static int sony_pic_get_fanspeed(u8 *value)
3570 {
3571         return ec_read(SONY_PIC_FAN0_STATUS, value);
3572 }
3573
3574 static ssize_t sony_pic_fanspeed_store(struct device *dev,
3575                 struct device_attribute *attr,
3576                 const char *buffer, size_t count)
3577 {
3578         unsigned long value;
3579         if (count > 31)
3580                 return -EINVAL;
3581
3582         if (kstrtoul(buffer, 10, &value))
3583                 return -EINVAL;
3584
3585         if (sony_pic_set_fanspeed(value))
3586                 return -EIO;
3587
3588         return count;
3589 }
3590
3591 static ssize_t sony_pic_fanspeed_show(struct device *dev,
3592                 struct device_attribute *attr, char *buffer)
3593 {
3594         u8 value = 0;
3595         if (sony_pic_get_fanspeed(&value))
3596                 return -EIO;
3597
3598         return snprintf(buffer, PAGE_SIZE, "%d\n", value);
3599 }
3600
3601 #define SPIC_ATTR(_name, _mode)                                 \
3602 struct device_attribute spic_attr_##_name = __ATTR(_name,       \
3603                 _mode, sony_pic_## _name ##_show,               \
3604                 sony_pic_## _name ##_store)
3605
3606 static SPIC_ATTR(bluetoothpower, 0644);
3607 static SPIC_ATTR(wwanpower, 0644);
3608 static SPIC_ATTR(fanspeed, 0644);
3609
3610 static struct attribute *spic_attributes[] = {
3611         &spic_attr_bluetoothpower.attr,
3612         &spic_attr_wwanpower.attr,
3613         &spic_attr_fanspeed.attr,
3614         NULL
3615 };
3616
3617 static struct attribute_group spic_attribute_group = {
3618         .attrs = spic_attributes
3619 };
3620
3621 /******** SONYPI compatibility **********/
3622 #ifdef CONFIG_SONYPI_COMPAT
3623
3624 /* battery / brightness / temperature  addresses */
3625 #define SONYPI_BAT_FLAGS        0x81
3626 #define SONYPI_LCD_LIGHT        0x96
3627 #define SONYPI_BAT1_PCTRM       0xa0
3628 #define SONYPI_BAT1_LEFT        0xa2
3629 #define SONYPI_BAT1_MAXRT       0xa4
3630 #define SONYPI_BAT2_PCTRM       0xa8
3631 #define SONYPI_BAT2_LEFT        0xaa
3632 #define SONYPI_BAT2_MAXRT       0xac
3633 #define SONYPI_BAT1_MAXTK       0xb0
3634 #define SONYPI_BAT1_FULL        0xb2
3635 #define SONYPI_BAT2_MAXTK       0xb8
3636 #define SONYPI_BAT2_FULL        0xba
3637 #define SONYPI_TEMP_STATUS      0xC1
3638
3639 struct sonypi_compat_s {
3640         struct fasync_struct    *fifo_async;
3641         struct kfifo            fifo;
3642         spinlock_t              fifo_lock;
3643         wait_queue_head_t       fifo_proc_list;
3644         atomic_t                open_count;
3645 };
3646 static struct sonypi_compat_s sonypi_compat = {
3647         .open_count = ATOMIC_INIT(0),
3648 };
3649
3650 static int sonypi_misc_fasync(int fd, struct file *filp, int on)
3651 {
3652         return fasync_helper(fd, filp, on, &sonypi_compat.fifo_async);
3653 }
3654
3655 static int sonypi_misc_release(struct inode *inode, struct file *file)
3656 {
3657         atomic_dec(&sonypi_compat.open_count);
3658         return 0;
3659 }
3660
3661 static int sonypi_misc_open(struct inode *inode, struct file *file)
3662 {
3663         /* Flush input queue on first open */
3664         unsigned long flags;
3665
3666         spin_lock_irqsave(&sonypi_compat.fifo_lock, flags);
3667
3668         if (atomic_inc_return(&sonypi_compat.open_count) == 1)
3669                 kfifo_reset(&sonypi_compat.fifo);
3670
3671         spin_unlock_irqrestore(&sonypi_compat.fifo_lock, flags);
3672
3673         return 0;
3674 }
3675
3676 static ssize_t sonypi_misc_read(struct file *file, char __user *buf,
3677                                 size_t count, loff_t *pos)
3678 {
3679         ssize_t ret;
3680         unsigned char c;
3681
3682         if ((kfifo_len(&sonypi_compat.fifo) == 0) &&
3683             (file->f_flags & O_NONBLOCK))
3684                 return -EAGAIN;
3685
3686         ret = wait_event_interruptible(sonypi_compat.fifo_proc_list,
3687                                        kfifo_len(&sonypi_compat.fifo) != 0);
3688         if (ret)
3689                 return ret;
3690
3691         while (ret < count &&
3692                (kfifo_out_locked(&sonypi_compat.fifo, &c, sizeof(c),
3693                           &sonypi_compat.fifo_lock) == sizeof(c))) {
3694                 if (put_user(c, buf++))
3695                         return -EFAULT;
3696                 ret++;
3697         }
3698
3699         if (ret > 0) {
3700                 struct inode *inode = file_inode(file);
3701                 inode->i_atime = current_fs_time(inode->i_sb);
3702         }
3703
3704         return ret;
3705 }
3706
3707 static unsigned int sonypi_misc_poll(struct file *file, poll_table *wait)
3708 {
3709         poll_wait(file, &sonypi_compat.fifo_proc_list, wait);
3710         if (kfifo_len(&sonypi_compat.fifo))
3711                 return POLLIN | POLLRDNORM;