1887e2f166a43edeb449ae2851c8f77a8a63bcfc
[linux-3.10.git] / drivers / platform / x86 / compal-laptop.c
1 /*-*-linux-c-*-*/
2
3 /*
4   Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
5
6   based on MSI driver
7
8   Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
9
10   This program is free software; you can redistribute it and/or modify
11   it under the terms of the GNU General Public License as published by
12   the Free Software Foundation; either version 2 of the License, or
13   (at your option) any later version.
14
15   This program is distributed in the hope that it will be useful, but
16   WITHOUT ANY WARRANTY; without even the implied warranty of
17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18   General Public License for more details.
19
20   You should have received a copy of the GNU General Public License
21   along with this program; if not, write to the Free Software
22   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23   02110-1301, USA.
24  */
25
26 /*
27  * compal-laptop.c - Compal laptop support.
28  *
29  * This driver exports a few files in /sys/devices/platform/compal-laptop/:
30  *   wake_up_XXX   Whether or not we listen to such wake up events (rw)
31  *
32  * In addition to these platform device attributes the driver
33  * registers itself in the Linux backlight control, power_supply, rfkill
34  * and hwmon subsystem and is available to userspace under:
35  *
36  *   /sys/class/backlight/compal-laptop/
37  *   /sys/class/power_supply/compal-laptop/
38  *   /sys/class/rfkill/rfkillX/
39  *   /sys/class/hwmon/hwmonX/
40  *
41  * Notes on the power_supply battery interface:
42  *   - the "minimum" design voltage is *the* design voltage
43  *   - the ambient temperature is the average battery temperature
44  *     and the value is an educated guess (see commented code below)
45  *
46  *
47  * This driver might work on other laptops produced by Compal. If you
48  * want to try it you can pass force=1 as argument to the module which
49  * will force it to load even when the DMI data doesn't identify the
50  * laptop as compatible.
51  *
52  * Lots of data available at:
53  * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/
54  * JHL90%20service%20manual-Final-0725.pdf
55  *
56  *
57  *
58  * Support for the Compal JHL90 added by Roald Frederickx
59  * (roald.frederickx@gmail.com):
60  * Driver got large revision. Added functionalities: backlight
61  * power, wake_on_XXX, a hwmon and power_supply interface.
62  *
63  * In case this gets merged into the kernel source: I want to dedicate this
64  * to Kasper Meerts, the awesome guy who showed me Linux and C!
65  */
66
67 /* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
68  * only enabled on a JHL90 board until it is verified that they work on the
69  * other boards too.  See the extra_features variable. */
70
71 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
72
73 #include <linux/module.h>
74 #include <linux/kernel.h>
75 #include <linux/init.h>
76 #include <linux/acpi.h>
77 #include <linux/dmi.h>
78 #include <linux/backlight.h>
79 #include <linux/platform_device.h>
80 #include <linux/rfkill.h>
81 #include <linux/hwmon.h>
82 #include <linux/hwmon-sysfs.h>
83 #include <linux/power_supply.h>
84 #include <linux/fb.h>
85
86
87 /* ======= */
88 /* Defines */
89 /* ======= */
90 #define DRIVER_NAME "compal-laptop"
91 #define DRIVER_VERSION  "0.2.7"
92
93 #define BACKLIGHT_LEVEL_ADDR            0xB9
94 #define BACKLIGHT_LEVEL_MAX             7
95 #define BACKLIGHT_STATE_ADDR            0x59
96 #define BACKLIGHT_STATE_ON_DATA         0xE1
97 #define BACKLIGHT_STATE_OFF_DATA        0xE2
98
99 #define WAKE_UP_ADDR                    0xA4
100 #define WAKE_UP_PME                     (1 << 0)
101 #define WAKE_UP_MODEM                   (1 << 1)
102 #define WAKE_UP_LAN                     (1 << 2)
103 #define WAKE_UP_WLAN                    (1 << 4)
104 #define WAKE_UP_KEY                     (1 << 6)
105 #define WAKE_UP_MOUSE                   (1 << 7)
106
107 #define WIRELESS_ADDR                   0xBB
108 #define WIRELESS_WLAN                   (1 << 0)
109 #define WIRELESS_BT                     (1 << 1)
110 #define WIRELESS_WLAN_EXISTS            (1 << 2)
111 #define WIRELESS_BT_EXISTS              (1 << 3)
112 #define WIRELESS_KILLSWITCH             (1 << 4)
113
114 #define PWM_ADDRESS                     0x46
115 #define PWM_DISABLE_ADDR                0x59
116 #define PWM_DISABLE_DATA                0xA5
117 #define PWM_ENABLE_ADDR                 0x59
118 #define PWM_ENABLE_DATA                 0xA8
119
120 #define FAN_ADDRESS                     0x46
121 #define FAN_DATA                        0x81
122 #define FAN_FULL_ON_CMD                 0x59 /* Doesn't seem to work. Just */
123 #define FAN_FULL_ON_ENABLE              0x76 /* force the pwm signal to its */
124 #define FAN_FULL_ON_DISABLE             0x77 /* maximum value instead */
125
126 #define TEMP_CPU                        0xB0
127 #define TEMP_CPU_LOCAL                  0xB1
128 #define TEMP_CPU_DTS                    0xB5
129 #define TEMP_NORTHBRIDGE                0xB6
130 #define TEMP_VGA                        0xB4
131 #define TEMP_SKIN                       0xB2
132
133 #define BAT_MANUFACTURER_NAME_ADDR      0x10
134 #define BAT_MANUFACTURER_NAME_LEN       9
135 #define BAT_MODEL_NAME_ADDR             0x19
136 #define BAT_MODEL_NAME_LEN              6
137 #define BAT_SERIAL_NUMBER_ADDR          0xC4
138 #define BAT_SERIAL_NUMBER_LEN           5
139 #define BAT_CHARGE_NOW                  0xC2
140 #define BAT_CHARGE_DESIGN               0xCA
141 #define BAT_VOLTAGE_NOW                 0xC6
142 #define BAT_VOLTAGE_DESIGN              0xC8
143 #define BAT_CURRENT_NOW                 0xD0
144 #define BAT_CURRENT_AVG                 0xD2
145 #define BAT_POWER                       0xD4
146 #define BAT_CAPACITY                    0xCE
147 #define BAT_TEMP                        0xD6
148 #define BAT_TEMP_AVG                    0xD7
149 #define BAT_STATUS0                     0xC1
150 #define BAT_STATUS1                     0xF0
151 #define BAT_STATUS2                     0xF1
152 #define BAT_STOP_CHARGE1                0xF2
153 #define BAT_STOP_CHARGE2                0xF3
154
155 #define BAT_S0_DISCHARGE                (1 << 0)
156 #define BAT_S0_DISCHRG_CRITICAL         (1 << 2)
157 #define BAT_S0_LOW                      (1 << 3)
158 #define BAT_S0_CHARGING                 (1 << 1)
159 #define BAT_S0_AC                       (1 << 7)
160 #define BAT_S1_EXISTS                   (1 << 0)
161 #define BAT_S1_FULL                     (1 << 1)
162 #define BAT_S1_EMPTY                    (1 << 2)
163 #define BAT_S1_LiION_OR_NiMH            (1 << 7)
164 #define BAT_S2_LOW_LOW                  (1 << 0)
165 #define BAT_STOP_CHRG1_BAD_CELL         (1 << 1)
166 #define BAT_STOP_CHRG1_COMM_FAIL        (1 << 2)
167 #define BAT_STOP_CHRG1_OVERVOLTAGE      (1 << 6)
168 #define BAT_STOP_CHRG1_OVERTEMPERATURE  (1 << 7)
169
170
171 /* ======= */
172 /* Structs */
173 /* ======= */
174 struct compal_data{
175         /* Fan control */
176         struct device *hwmon_dev;
177         int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by moterboard */
178         unsigned char curr_pwm;
179
180         /* Power supply */
181         struct power_supply psy;
182         struct power_supply_info psy_info;
183         char bat_model_name[BAT_MODEL_NAME_LEN + 1];
184         char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
185         char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
186 };
187
188
189 /* =============== */
190 /* General globals */
191 /* =============== */
192 static bool force;
193 module_param(force, bool, 0);
194 MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
195
196 /* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
197  * only gets enabled on a JHL90 board. Might work with the others too */
198 static bool extra_features;
199
200 /* Nasty stuff. For some reason the fan control is very un-linear.  I've
201  * come up with these values by looping through the possible inputs and
202  * watching the output of address 0x4F (do an ec_transaction writing 0x33
203  * into 0x4F and read a few bytes from the output, like so:
204  *      u8 writeData = 0x33;
205  *      ec_transaction(0x4F, &writeData, 1, buffer, 32);
206  * That address is labeled "fan1 table information" in the service manual.
207  * It should be clear which value in 'buffer' changes). This seems to be
208  * related to fan speed. It isn't a proper 'realtime' fan speed value
209  * though, because physically stopping or speeding up the fan doesn't
210  * change it. It might be the average voltage or current of the pwm output.
211  * Nevertheless, it is more fine-grained than the actual RPM reading */
212 static const unsigned char pwm_lookup_table[256] = {
213         0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
214         7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
215         13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
216         75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
217         94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
218         139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
219         76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
220         22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
221         219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
222         186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
223         33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
224         206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
225         47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
226         48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
227         189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
228         191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
229         187, 187, 193, 50
230 };
231
232
233
234
235 /* ========================= */
236 /* Hardware access functions */
237 /* ========================= */
238 /* General access */
239 static u8 ec_read_u8(u8 addr)
240 {
241         u8 value;
242         ec_read(addr, &value);
243         return value;
244 }
245
246 static s8 ec_read_s8(u8 addr)
247 {
248         return (s8)ec_read_u8(addr);
249 }
250
251 static u16 ec_read_u16(u8 addr)
252 {
253         int hi, lo;
254         lo = ec_read_u8(addr);
255         hi = ec_read_u8(addr + 1);
256         return (hi << 8) + lo;
257 }
258
259 static s16 ec_read_s16(u8 addr)
260 {
261         return (s16) ec_read_u16(addr);
262 }
263
264 static void ec_read_sequence(u8 addr, u8 *buf, int len)
265 {
266         int i;
267         for (i = 0; i < len; i++)
268                 ec_read(addr + i, buf + i);
269 }
270
271
272 /* Backlight access */
273 static int set_backlight_level(int level)
274 {
275         if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
276                 return -EINVAL;
277
278         ec_write(BACKLIGHT_LEVEL_ADDR, level);
279
280         return 0;
281 }
282
283 static int get_backlight_level(void)
284 {
285         return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
286 }
287
288 static void set_backlight_state(bool on)
289 {
290         u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
291         ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
292 }
293
294
295 /* Fan control access */
296 static void pwm_enable_control(void)
297 {
298         unsigned char writeData = PWM_ENABLE_DATA;
299         ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
300 }
301
302 static void pwm_disable_control(void)
303 {
304         unsigned char writeData = PWM_DISABLE_DATA;
305         ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
306 }
307
308 static void set_pwm(int pwm)
309 {
310         ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
311 }
312
313 static int get_fan_rpm(void)
314 {
315         u8 value, data = FAN_DATA;
316         ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
317         return 100 * (int)value;
318 }
319
320
321
322
323 /* =================== */
324 /* Interface functions */
325 /* =================== */
326
327 /* Backlight interface */
328 static int bl_get_brightness(struct backlight_device *b)
329 {
330         return get_backlight_level();
331 }
332
333 static int bl_update_status(struct backlight_device *b)
334 {
335         int ret = set_backlight_level(b->props.brightness);
336         if (ret)
337                 return ret;
338
339         set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
340                 &&    !(b->props.state & BL_CORE_SUSPENDED)
341                 &&    !(b->props.state & BL_CORE_FBBLANK));
342         return 0;
343 }
344
345 static const struct backlight_ops compalbl_ops = {
346         .get_brightness = bl_get_brightness,
347         .update_status  = bl_update_status,
348 };
349
350
351 /* Wireless interface */
352 static int compal_rfkill_set(void *data, bool blocked)
353 {
354         unsigned long radio = (unsigned long) data;
355         u8 result = ec_read_u8(WIRELESS_ADDR);
356         u8 value;
357
358         if (!blocked)
359                 value = (u8) (result | radio);
360         else
361                 value = (u8) (result & ~radio);
362         ec_write(WIRELESS_ADDR, value);
363
364         return 0;
365 }
366
367 static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
368 {
369         u8 result = ec_read_u8(WIRELESS_ADDR);
370         bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
371         rfkill_set_hw_state(rfkill, hw_blocked);
372 }
373
374 static const struct rfkill_ops compal_rfkill_ops = {
375         .poll = compal_rfkill_poll,
376         .set_block = compal_rfkill_set,
377 };
378
379
380 /* Wake_up interface */
381 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK)                      \
382 static ssize_t NAME##_show(struct device *dev,                          \
383         struct device_attribute *attr, char *buf)                       \
384 {                                                                       \
385         return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0));  \
386 }                                                                       \
387 static ssize_t NAME##_store(struct device *dev,                         \
388         struct device_attribute *attr, const char *buf, size_t count)   \
389 {                                                                       \
390         int state;                                                      \
391         u8 old_val = ec_read_u8(ADDR);                                  \
392         if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
393                 return -EINVAL;                                         \
394         ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK));   \
395         return count;                                                   \
396 }
397
398 SIMPLE_MASKED_STORE_SHOW(wake_up_pme,   WAKE_UP_ADDR, WAKE_UP_PME)
399 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
400 SIMPLE_MASKED_STORE_SHOW(wake_up_lan,   WAKE_UP_ADDR, WAKE_UP_LAN)
401 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan,  WAKE_UP_ADDR, WAKE_UP_WLAN)
402 SIMPLE_MASKED_STORE_SHOW(wake_up_key,   WAKE_UP_ADDR, WAKE_UP_KEY)
403 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
404
405
406 /* General hwmon interface */
407 static ssize_t hwmon_name_show(struct device *dev,
408                 struct device_attribute *attr, char *buf)
409 {
410         return sprintf(buf, "%s\n", DRIVER_NAME);
411 }
412
413
414 /* Fan control interface */
415 static ssize_t pwm_enable_show(struct device *dev,
416                 struct device_attribute *attr, char *buf)
417 {
418         struct compal_data *data = dev_get_drvdata(dev);
419         return sprintf(buf, "%d\n", data->pwm_enable);
420 }
421
422 static ssize_t pwm_enable_store(struct device *dev,
423                 struct device_attribute *attr, const char *buf, size_t count)
424 {
425         struct compal_data *data = dev_get_drvdata(dev);
426         long val;
427         int err;
428         err = strict_strtol(buf, 10, &val);
429         if (err)
430                 return err;
431         if (val < 0)
432                 return -EINVAL;
433
434         data->pwm_enable = val;
435
436         switch (val) {
437         case 0:  /* Full speed */
438                 pwm_enable_control();
439                 set_pwm(255);
440                 break;
441         case 1:  /* As set by pwm1 */
442                 pwm_enable_control();
443                 set_pwm(data->curr_pwm);
444                 break;
445         default: /* Control by motherboard */
446                 pwm_disable_control();
447                 break;
448         }
449
450         return count;
451 }
452
453 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
454                 char *buf)
455 {
456         struct compal_data *data = dev_get_drvdata(dev);
457         return sprintf(buf, "%hhu\n", data->curr_pwm);
458 }
459
460 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
461                 const char *buf, size_t count)
462 {
463         struct compal_data *data = dev_get_drvdata(dev);
464         long val;
465         int err;
466         err = strict_strtol(buf, 10, &val);
467         if (err)
468                 return err;
469         if (val < 0 || val > 255)
470                 return -EINVAL;
471
472         data->curr_pwm = val;
473
474         if (data->pwm_enable != 1)
475                 return count;
476         set_pwm(val);
477
478         return count;
479 }
480
481 static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
482                 char *buf)
483 {
484         return sprintf(buf, "%d\n", get_fan_rpm());
485 }
486
487
488 /* Temperature interface */
489 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL)        \
490 static ssize_t temp_##POSTFIX(struct device *dev,                       \
491                 struct device_attribute *attr, char *buf)               \
492 {                                                                       \
493         return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS));   \
494 }                                                                       \
495 static ssize_t label_##POSTFIX(struct device *dev,                      \
496                 struct device_attribute *attr, char *buf)               \
497 {                                                                       \
498         return sprintf(buf, "%s\n", LABEL);                             \
499 }
500
501 /* Labels as in service guide */
502 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu,        TEMP_CPU,        "CPU_TEMP");
503 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local,  TEMP_CPU_LOCAL,  "CPU_TEMP_LOCAL");
504 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS,    TEMP_CPU_DTS,    "CPU_DTS");
505 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
506 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga,        TEMP_VGA,        "VGA_TEMP");
507 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN,       TEMP_SKIN,       "SKIN_TEMP90");
508
509
510 /* Power supply interface */
511 static int bat_status(void)
512 {
513         u8 status0 = ec_read_u8(BAT_STATUS0);
514         u8 status1 = ec_read_u8(BAT_STATUS1);
515
516         if (status0 & BAT_S0_CHARGING)
517                 return POWER_SUPPLY_STATUS_CHARGING;
518         if (status0 & BAT_S0_DISCHARGE)
519                 return POWER_SUPPLY_STATUS_DISCHARGING;
520         if (status1 & BAT_S1_FULL)
521                 return POWER_SUPPLY_STATUS_FULL;
522         return POWER_SUPPLY_STATUS_NOT_CHARGING;
523 }
524
525 static int bat_health(void)
526 {
527         u8 status = ec_read_u8(BAT_STOP_CHARGE1);
528
529         if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
530                 return POWER_SUPPLY_HEALTH_OVERHEAT;
531         if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
532                 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
533         if (status & BAT_STOP_CHRG1_BAD_CELL)
534                 return POWER_SUPPLY_HEALTH_DEAD;
535         if (status & BAT_STOP_CHRG1_COMM_FAIL)
536                 return POWER_SUPPLY_HEALTH_UNKNOWN;
537         return POWER_SUPPLY_HEALTH_GOOD;
538 }
539
540 static int bat_is_present(void)
541 {
542         u8 status = ec_read_u8(BAT_STATUS2);
543         return ((status & BAT_S1_EXISTS) != 0);
544 }
545
546 static int bat_technology(void)
547 {
548         u8 status = ec_read_u8(BAT_STATUS1);
549
550         if (status & BAT_S1_LiION_OR_NiMH)
551                 return POWER_SUPPLY_TECHNOLOGY_LION;
552         return POWER_SUPPLY_TECHNOLOGY_NiMH;
553 }
554
555 static int bat_capacity_level(void)
556 {
557         u8 status0 = ec_read_u8(BAT_STATUS0);
558         u8 status1 = ec_read_u8(BAT_STATUS1);
559         u8 status2 = ec_read_u8(BAT_STATUS2);
560
561         if (status0 & BAT_S0_DISCHRG_CRITICAL
562                         || status1 & BAT_S1_EMPTY
563                         || status2 & BAT_S2_LOW_LOW)
564                 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
565         if (status0 & BAT_S0_LOW)
566                 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
567         if (status1 & BAT_S1_FULL)
568                 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
569         return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
570 }
571
572 static int bat_get_property(struct power_supply *psy,
573                                 enum power_supply_property psp,
574                                 union power_supply_propval *val)
575 {
576         struct compal_data *data;
577         data = container_of(psy, struct compal_data, psy);
578
579         switch (psp) {
580         case POWER_SUPPLY_PROP_STATUS:
581                 val->intval = bat_status();
582                 break;
583         case POWER_SUPPLY_PROP_HEALTH:
584                 val->intval = bat_health();
585                 break;
586         case POWER_SUPPLY_PROP_PRESENT:
587                 val->intval = bat_is_present();
588                 break;
589         case POWER_SUPPLY_PROP_TECHNOLOGY:
590                 val->intval = bat_technology();
591                 break;
592         case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
593                 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
594                 break;
595         case POWER_SUPPLY_PROP_VOLTAGE_NOW:
596                 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
597                 break;
598         case POWER_SUPPLY_PROP_CURRENT_NOW:
599                 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
600                 break;
601         case POWER_SUPPLY_PROP_CURRENT_AVG:
602                 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
603                 break;
604         case POWER_SUPPLY_PROP_POWER_NOW:
605                 val->intval = ec_read_u8(BAT_POWER) * 1000000;
606                 break;
607         case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
608                 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
609                 break;
610         case POWER_SUPPLY_PROP_CHARGE_NOW:
611                 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
612                 break;
613         case POWER_SUPPLY_PROP_CAPACITY:
614                 val->intval = ec_read_u8(BAT_CAPACITY);
615                 break;
616         case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
617                 val->intval = bat_capacity_level();
618                 break;
619         /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
620          * the number of degrees, whereas BAT_TEMP is somewhat more
621          * complicated. It looks like this is a negative nember with a
622          * 100/256 divider and an offset of 222. Both were determined
623          * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
624         case POWER_SUPPLY_PROP_TEMP:
625                 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
626                 break;
627         case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
628                 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
629                 break;
630         /* Neither the model name nor manufacturer name work for me. */
631         case POWER_SUPPLY_PROP_MODEL_NAME:
632                 val->strval = data->bat_model_name;
633                 break;
634         case POWER_SUPPLY_PROP_MANUFACTURER:
635                 val->strval = data->bat_manufacturer_name;
636                 break;
637         case POWER_SUPPLY_PROP_SERIAL_NUMBER:
638                 val->strval = data->bat_serial_number;
639                 break;
640         default:
641                 break;
642         }
643         return 0;
644 }
645
646
647
648
649
650 /* ============== */
651 /* Driver Globals */
652 /* ============== */
653 static DEVICE_ATTR(wake_up_pme,
654                 0644, wake_up_pme_show,         wake_up_pme_store);
655 static DEVICE_ATTR(wake_up_modem,
656                 0644, wake_up_modem_show,       wake_up_modem_store);
657 static DEVICE_ATTR(wake_up_lan,
658                 0644, wake_up_lan_show, wake_up_lan_store);
659 static DEVICE_ATTR(wake_up_wlan,
660                 0644, wake_up_wlan_show,        wake_up_wlan_store);
661 static DEVICE_ATTR(wake_up_key,
662                 0644, wake_up_key_show, wake_up_key_store);
663 static DEVICE_ATTR(wake_up_mouse,
664                 0644, wake_up_mouse_show,       wake_up_mouse_store);
665
666 static SENSOR_DEVICE_ATTR(name,        S_IRUGO, hwmon_name_show,   NULL, 1);
667 static SENSOR_DEVICE_ATTR(fan1_input,  S_IRUGO, fan_show,          NULL, 1);
668 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu,          NULL, 1);
669 static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local,    NULL, 1);
670 static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS,      NULL, 1);
671 static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge,  NULL, 1);
672 static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga,          NULL, 1);
673 static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN,         NULL, 1);
674 static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu,         NULL, 1);
675 static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local,   NULL, 1);
676 static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS,     NULL, 1);
677 static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL, 1);
678 static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, label_vga,         NULL, 1);
679 static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN,        NULL, 1);
680 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store, 1);
681 static SENSOR_DEVICE_ATTR(pwm1_enable,
682                 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store, 0);
683
684 static struct attribute *compal_attributes[] = {
685         &dev_attr_wake_up_pme.attr,
686         &dev_attr_wake_up_modem.attr,
687         &dev_attr_wake_up_lan.attr,
688         &dev_attr_wake_up_wlan.attr,
689         &dev_attr_wake_up_key.attr,
690         &dev_attr_wake_up_mouse.attr,
691         /* Maybe put the sensor-stuff in a separate hwmon-driver? That way,
692          * the hwmon sysfs won't be cluttered with the above files. */
693         &sensor_dev_attr_name.dev_attr.attr,
694         &sensor_dev_attr_pwm1_enable.dev_attr.attr,
695         &sensor_dev_attr_pwm1.dev_attr.attr,
696         &sensor_dev_attr_fan1_input.dev_attr.attr,
697         &sensor_dev_attr_temp1_input.dev_attr.attr,
698         &sensor_dev_attr_temp2_input.dev_attr.attr,
699         &sensor_dev_attr_temp3_input.dev_attr.attr,
700         &sensor_dev_attr_temp4_input.dev_attr.attr,
701         &sensor_dev_attr_temp5_input.dev_attr.attr,
702         &sensor_dev_attr_temp6_input.dev_attr.attr,
703         &sensor_dev_attr_temp1_label.dev_attr.attr,
704         &sensor_dev_attr_temp2_label.dev_attr.attr,
705         &sensor_dev_attr_temp3_label.dev_attr.attr,
706         &sensor_dev_attr_temp4_label.dev_attr.attr,
707         &sensor_dev_attr_temp5_label.dev_attr.attr,
708         &sensor_dev_attr_temp6_label.dev_attr.attr,
709         NULL
710 };
711
712 static struct attribute_group compal_attribute_group = {
713         .attrs = compal_attributes
714 };
715
716 static int __devinit compal_probe(struct platform_device *);
717 static int __devexit compal_remove(struct platform_device *);
718 static struct platform_driver compal_driver = {
719         .driver = {
720                 .name = DRIVER_NAME,
721                 .owner = THIS_MODULE,
722         },
723         .probe  = compal_probe,
724         .remove = __devexit_p(compal_remove)
725 };
726
727 static enum power_supply_property compal_bat_properties[] = {
728         POWER_SUPPLY_PROP_STATUS,
729         POWER_SUPPLY_PROP_HEALTH,
730         POWER_SUPPLY_PROP_PRESENT,
731         POWER_SUPPLY_PROP_TECHNOLOGY,
732         POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
733         POWER_SUPPLY_PROP_VOLTAGE_NOW,
734         POWER_SUPPLY_PROP_CURRENT_NOW,
735         POWER_SUPPLY_PROP_CURRENT_AVG,
736         POWER_SUPPLY_PROP_POWER_NOW,
737         POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
738         POWER_SUPPLY_PROP_CHARGE_NOW,
739         POWER_SUPPLY_PROP_CAPACITY,
740         POWER_SUPPLY_PROP_CAPACITY_LEVEL,
741         POWER_SUPPLY_PROP_TEMP,
742         POWER_SUPPLY_PROP_TEMP_AMBIENT,
743         POWER_SUPPLY_PROP_MODEL_NAME,
744         POWER_SUPPLY_PROP_MANUFACTURER,
745         POWER_SUPPLY_PROP_SERIAL_NUMBER,
746 };
747
748 static struct backlight_device *compalbl_device;
749
750 static struct platform_device *compal_device;
751
752 static struct rfkill *wifi_rfkill;
753 static struct rfkill *bt_rfkill;
754
755
756
757
758
759 /* =================================== */
760 /* Initialization & clean-up functions */
761 /* =================================== */
762
763 static int dmi_check_cb(const struct dmi_system_id *id)
764 {
765         pr_info("Identified laptop model '%s'\n", id->ident);
766         extra_features = false;
767         return 1;
768 }
769
770 static int dmi_check_cb_extra(const struct dmi_system_id *id)
771 {
772         pr_info("Identified laptop model '%s', enabling extra features\n",
773                 id->ident);
774         extra_features = true;
775         return 1;
776 }
777
778 static struct dmi_system_id __initdata compal_dmi_table[] = {
779         {
780                 .ident = "FL90/IFL90",
781                 .matches = {
782                         DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
783                         DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
784                 },
785                 .callback = dmi_check_cb
786         },
787         {
788                 .ident = "FL90/IFL90",
789                 .matches = {
790                         DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
791                         DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
792                 },
793                 .callback = dmi_check_cb
794         },
795         {
796                 .ident = "FL91/IFL91",
797                 .matches = {
798                         DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
799                         DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
800                 },
801                 .callback = dmi_check_cb
802         },
803         {
804                 .ident = "FL92/JFL92",
805                 .matches = {
806                         DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
807                         DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808                 },
809                 .callback = dmi_check_cb
810         },
811         {
812                 .ident = "FT00/IFT00",
813                 .matches = {
814                         DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
815                         DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
816                 },
817                 .callback = dmi_check_cb
818         },
819         {
820                 .ident = "Dell Mini 9",
821                 .matches = {
822                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
823                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
824                 },
825                 .callback = dmi_check_cb
826         },
827         {
828                 .ident = "Dell Mini 10",
829                 .matches = {
830                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
831                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
832                 },
833                 .callback = dmi_check_cb
834         },
835         {
836                 .ident = "Dell Mini 10v",
837                 .matches = {
838                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
839                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
840                 },
841                 .callback = dmi_check_cb
842         },
843         {
844                 .ident = "Dell Mini 1012",
845                 .matches = {
846                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
848                 },
849                 .callback = dmi_check_cb
850         },
851         {
852                 .ident = "Dell Inspiron 11z",
853                 .matches = {
854                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
856                 },
857                 .callback = dmi_check_cb
858         },
859         {
860                 .ident = "Dell Mini 12",
861                 .matches = {
862                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
863                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
864                 },
865                 .callback = dmi_check_cb
866         },
867         {
868                 .ident = "JHL90",
869                 .matches = {
870                         DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
871                         DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
872                 },
873                 .callback = dmi_check_cb_extra
874         },
875         {
876                 .ident = "KHLB2",
877                 .matches = {
878                         DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
879                         DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
880                 },
881                 .callback = dmi_check_cb_extra
882         },
883         { }
884 };
885 MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
886
887 static void initialize_power_supply_data(struct compal_data *data)
888 {
889         data->psy.name = DRIVER_NAME;
890         data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
891         data->psy.properties = compal_bat_properties;
892         data->psy.num_properties = ARRAY_SIZE(compal_bat_properties);
893         data->psy.get_property = bat_get_property;
894
895         ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
896                                         data->bat_manufacturer_name,
897                                         BAT_MANUFACTURER_NAME_LEN);
898         data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
899
900         ec_read_sequence(BAT_MODEL_NAME_ADDR,
901                                         data->bat_model_name,
902                                         BAT_MODEL_NAME_LEN);
903         data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
904
905         scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
906                                 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
907 }
908
909 static void initialize_fan_control_data(struct compal_data *data)
910 {
911         data->pwm_enable = 2; /* Keep motherboard in control for now */
912         data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
913                                  if we take over... */
914 }
915
916 static int setup_rfkill(void)
917 {
918         int ret;
919
920         wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
921                                 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
922                                 (void *) WIRELESS_WLAN);
923         if (!wifi_rfkill)
924                 return -ENOMEM;
925
926         ret = rfkill_register(wifi_rfkill);
927         if (ret)
928                 goto err_wifi;
929
930         bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
931                                 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
932                                 (void *) WIRELESS_BT);
933         if (!bt_rfkill) {
934                 ret = -ENOMEM;
935                 goto err_allocate_bt;
936         }
937         ret = rfkill_register(bt_rfkill);
938         if (ret)
939                 goto err_register_bt;
940
941         return 0;
942
943 err_register_bt:
944         rfkill_destroy(bt_rfkill);
945
946 err_allocate_bt:
947         rfkill_unregister(wifi_rfkill);
948
949 err_wifi:
950         rfkill_destroy(wifi_rfkill);
951
952         return ret;
953 }
954
955 static int __init compal_init(void)
956 {
957         int ret;
958
959         if (acpi_disabled) {
960                 pr_err("ACPI needs to be enabled for this driver to work!\n");
961                 return -ENODEV;
962         }
963
964         if (!force && !dmi_check_system(compal_dmi_table)) {
965                 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
966                 return -ENODEV;
967         }
968
969         if (!acpi_video_backlight_support()) {
970                 struct backlight_properties props;
971                 memset(&props, 0, sizeof(struct backlight_properties));
972                 props.type = BACKLIGHT_PLATFORM;
973                 props.max_brightness = BACKLIGHT_LEVEL_MAX;
974                 compalbl_device = backlight_device_register(DRIVER_NAME,
975                                                             NULL, NULL,
976                                                             &compalbl_ops,
977                                                             &props);
978                 if (IS_ERR(compalbl_device))
979                         return PTR_ERR(compalbl_device);
980         }
981
982         ret = platform_driver_register(&compal_driver);
983         if (ret)
984                 goto err_backlight;
985
986         compal_device = platform_device_alloc(DRIVER_NAME, -1);
987         if (!compal_device) {
988                 ret = -ENOMEM;
989                 goto err_platform_driver;
990         }
991
992         ret = platform_device_add(compal_device); /* This calls compal_probe */
993         if (ret)
994                 goto err_platform_device;
995
996         ret = setup_rfkill();
997         if (ret)
998                 goto err_rfkill;
999
1000         pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1001         return 0;
1002
1003 err_rfkill:
1004         platform_device_del(compal_device);
1005
1006 err_platform_device:
1007         platform_device_put(compal_device);
1008
1009 err_platform_driver:
1010         platform_driver_unregister(&compal_driver);
1011
1012 err_backlight:
1013         backlight_device_unregister(compalbl_device);
1014
1015         return ret;
1016 }
1017
1018 static int __devinit compal_probe(struct platform_device *pdev)
1019 {
1020         int err;
1021         struct compal_data *data;
1022
1023         if (!extra_features)
1024                 return 0;
1025
1026         /* Fan control */
1027         data = kzalloc(sizeof(struct compal_data), GFP_KERNEL);
1028         if (!data)
1029                 return -ENOMEM;
1030
1031         initialize_fan_control_data(data);
1032
1033         err = sysfs_create_group(&pdev->dev.kobj, &compal_attribute_group);
1034         if (err) {
1035                 kfree(data);
1036                 return err;
1037         }
1038
1039         data->hwmon_dev = hwmon_device_register(&pdev->dev);
1040         if (IS_ERR(data->hwmon_dev)) {
1041                 err = PTR_ERR(data->hwmon_dev);
1042                 sysfs_remove_group(&pdev->dev.kobj,
1043                                 &compal_attribute_group);
1044                 kfree(data);
1045                 return err;
1046         }
1047
1048         /* Power supply */
1049         initialize_power_supply_data(data);
1050         power_supply_register(&compal_device->dev, &data->psy);
1051
1052         platform_set_drvdata(pdev, data);
1053
1054         return 0;
1055 }
1056
1057 static void __exit compal_cleanup(void)
1058 {
1059         platform_device_unregister(compal_device);
1060         platform_driver_unregister(&compal_driver);
1061         backlight_device_unregister(compalbl_device);
1062         rfkill_unregister(wifi_rfkill);
1063         rfkill_unregister(bt_rfkill);
1064         rfkill_destroy(wifi_rfkill);
1065         rfkill_destroy(bt_rfkill);
1066
1067         pr_info("Driver unloaded\n");
1068 }
1069
1070 static int __devexit compal_remove(struct platform_device *pdev)
1071 {
1072         struct compal_data *data;
1073
1074         if (!extra_features)
1075                 return 0;
1076
1077         pr_info("Unloading: resetting fan control to motherboard\n");
1078         pwm_disable_control();
1079
1080         data = platform_get_drvdata(pdev);
1081         hwmon_device_unregister(data->hwmon_dev);
1082         power_supply_unregister(&data->psy);
1083
1084         platform_set_drvdata(pdev, NULL);
1085         kfree(data);
1086
1087         sysfs_remove_group(&pdev->dev.kobj, &compal_attribute_group);
1088
1089         return 0;
1090 }
1091
1092
1093 module_init(compal_init);
1094 module_exit(compal_cleanup);
1095
1096 MODULE_AUTHOR("Cezary Jackiewicz");
1097 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1098 MODULE_DESCRIPTION("Compal Laptop Support");
1099 MODULE_VERSION(DRIVER_VERSION);
1100 MODULE_LICENSE("GPL");