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backlight: add backlight type
[linux-2.6-block.git] / drivers / platform / x86 / compal-laptop.c
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5411552c
CJ		 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/*
9be0fcb5
RF		 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)
5411552c 45 *
5411552c
CJ		 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
9be0fcb5
RF		 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!
5411552c
CJ		 65 */
66
9be0fcb5
RF		 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
5411552c
CJ		 71#include <linux/module.h>
72#include <linux/kernel.h>
73#include <linux/init.h>
74#include <linux/acpi.h>
75#include <linux/dmi.h>
76#include <linux/backlight.h>
77#include <linux/platform_device.h>
493e9143 78#include <linux/rfkill.h>
9be0fcb5
RF		 79#include <linux/hwmon.h>
80#include <linux/hwmon-sysfs.h>
81#include <linux/power_supply.h>
82#include <linux/fb.h>
83
84
85/* ======= */
86/* Defines */
87/* ======= */
88#define DRIVER_NAME "compal-laptop"
89#define DRIVER_VERSION "0.2.7"
90
91#define BACKLIGHT_LEVEL_ADDR 0xB9
92#define BACKLIGHT_LEVEL_MAX 7
93#define BACKLIGHT_STATE_ADDR 0x59
94#define BACKLIGHT_STATE_ON_DATA 0xE1
95#define BACKLIGHT_STATE_OFF_DATA 0xE2
96
97#define WAKE_UP_ADDR 0xA4
98#define WAKE_UP_PME (1 << 0)
99#define WAKE_UP_MODEM (1 << 1)
100#define WAKE_UP_LAN (1 << 2)
101#define WAKE_UP_WLAN (1 << 4)
102#define WAKE_UP_KEY (1 << 6)
103#define WAKE_UP_MOUSE (1 << 7)
104
105#define WIRELESS_ADDR 0xBB
106#define WIRELESS_WLAN (1 << 0)
107#define WIRELESS_BT (1 << 1)
108#define WIRELESS_WLAN_EXISTS (1 << 2)
109#define WIRELESS_BT_EXISTS (1 << 3)
110#define WIRELESS_KILLSWITCH (1 << 4)
111
112#define PWM_ADDRESS 0x46
113#define PWM_DISABLE_ADDR 0x59
114#define PWM_DISABLE_DATA 0xA5
115#define PWM_ENABLE_ADDR 0x59
116#define PWM_ENABLE_DATA 0xA8
117
118#define FAN_ADDRESS 0x46
119#define FAN_DATA 0x81
120#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
121#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
122#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
123
124#define TEMP_CPU 0xB0
125#define TEMP_CPU_LOCAL 0xB1
126#define TEMP_CPU_DTS 0xB5
127#define TEMP_NORTHBRIDGE 0xB6
128#define TEMP_VGA 0xB4
129#define TEMP_SKIN 0xB2
130
131#define BAT_MANUFACTURER_NAME_ADDR 0x10
132#define BAT_MANUFACTURER_NAME_LEN 9
133#define BAT_MODEL_NAME_ADDR 0x19
134#define BAT_MODEL_NAME_LEN 6
135#define BAT_SERIAL_NUMBER_ADDR 0xC4
136#define BAT_SERIAL_NUMBER_LEN 5
137#define BAT_CHARGE_NOW 0xC2
138#define BAT_CHARGE_DESIGN 0xCA
139#define BAT_VOLTAGE_NOW 0xC6
140#define BAT_VOLTAGE_DESIGN 0xC8
141#define BAT_CURRENT_NOW 0xD0
142#define BAT_CURRENT_AVG 0xD2
143#define BAT_POWER 0xD4
144#define BAT_CAPACITY 0xCE
145#define BAT_TEMP 0xD6
146#define BAT_TEMP_AVG 0xD7
147#define BAT_STATUS0 0xC1
148#define BAT_STATUS1 0xF0
149#define BAT_STATUS2 0xF1
150#define BAT_STOP_CHARGE1 0xF2
151#define BAT_STOP_CHARGE2 0xF3
152
153#define BAT_S0_DISCHARGE (1 << 0)
154#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
155#define BAT_S0_LOW (1 << 3)
156#define BAT_S0_CHARGING (1 << 1)
157#define BAT_S0_AC (1 << 7)
158#define BAT_S1_EXISTS (1 << 0)
159#define BAT_S1_FULL (1 << 1)
160#define BAT_S1_EMPTY (1 << 2)
161#define BAT_S1_LiION_OR_NiMH (1 << 7)
162#define BAT_S2_LOW_LOW (1 << 0)
163#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
164#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
165#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
166#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
167
168
169/* ======= */
170/* Structs */
171/* ======= */
172struct compal_data{
173 /* Fan control */
174 struct device *hwmon_dev;
175 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by moterboard */
176 unsigned char curr_pwm;
177
178 /* Power supply */
179 struct power_supply psy;
180 struct power_supply_info psy_info;
181 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
182 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
183 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
184};
5411552c 185
5411552c 186
9be0fcb5
RF		 187/* =============== */
188/* General globals */
189/* =============== */
190static int force;
191module_param(force, bool, 0);
192MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
5411552c 193
9be0fcb5
RF		 194/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
195 * only gets enabled on a JHL90 board. Might work with the others too */
196static bool extra_features;
197
198/* Nasty stuff. For some reason the fan control is very un-linear. I've
199 * come up with these values by looping through the possible inputs and
200 * watching the output of address 0x4F (do an ec_transaction writing 0x33
201 * into 0x4F and read a few bytes from the output, like so:
202 * u8 writeData = 0x33;
203 * ec_transaction(0x4F, &writeData, 1, buffer, 32, 0);
204 * That address is labled "fan1 table information" in the service manual.
205 * It should be clear which value in 'buffer' changes). This seems to be
206 * related to fan speed. It isn't a proper 'realtime' fan speed value
207 * though, because physically stopping or speeding up the fan doesn't
208 * change it. It might be the average voltage or current of the pwm output.
209 * Nevertheless, it is more fine-grained than the actual RPM reading */
210static const unsigned char pwm_lookup_table[256] = {
211 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
212 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
213 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
214 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
215 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
216 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
217 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
218 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
219 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
220 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
221 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
222 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
223 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
224 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
225 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
226 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
227 187, 187, 193, 50
228};
5411552c 229
5411552c 230
493e9143 231
5411552c 232
9be0fcb5
RF		 233/* ========================= */
234/* Hardware access functions */
235/* ========================= */
236/* General access */
237static u8 ec_read_u8(u8 addr)
238{
239 u8 value;
240 ec_read(addr, &value);
241 return value;
242}
243
244static s8 ec_read_s8(u8 addr)
245{
246 return (s8)ec_read_u8(addr);
247}
248
249static u16 ec_read_u16(u8 addr)
250{
251 int hi, lo;
252 lo = ec_read_u8(addr);
253 hi = ec_read_u8(addr + 1);
254 return (hi << 8) + lo;
255}
256
257static s16 ec_read_s16(u8 addr)
258{
259 return (s16) ec_read_u16(addr);
260}
5411552c 261
9be0fcb5 262static void ec_read_sequence(u8 addr, u8 *buf, int len)
5411552c 263{
9be0fcb5
RF		 264 int i;
265 for (i = 0; i < len; i++)
266 ec_read(addr + i, buf + i);
267}
268
269
270/* Backlight access */
271static int set_backlight_level(int level)
272{
273 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
5411552c
CJ		 274 return -EINVAL;
275
9be0fcb5 276 ec_write(BACKLIGHT_LEVEL_ADDR, level);
5411552c 277
80183a4b 278 return 1;
5411552c
CJ		 279}
280
9be0fcb5
RF		 281static int get_backlight_level(void)
282{
283 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
284}
285
286static void set_backlight_state(bool on)
287{
288 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
289 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0, 0);
290}
291
292
293/* Fan control access */
294static void pwm_enable_control(void)
295{
296 unsigned char writeData = PWM_ENABLE_DATA;
297 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0, 0);
298}
299
300static void pwm_disable_control(void)
5411552c 301{
9be0fcb5
RF		 302 unsigned char writeData = PWM_DISABLE_DATA;
303 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0, 0);
304}
5411552c 305
9be0fcb5
RF		 306static void set_pwm(int pwm)
307{
308 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0, 0);
309}
310
311static int get_fan_rpm(void)
312{
313 u8 value, data = FAN_DATA;
314 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1, 0);
315 return 100 * (int)value;
316}
317
318
319
320
321/* =================== */
322/* Interface functions */
323/* =================== */
324
325/* Backlight interface */
326static int bl_get_brightness(struct backlight_device *b)
327{
328 return get_backlight_level();
329}
330
331static int bl_update_status(struct backlight_device *b)
332{
333 int ret = set_backlight_level(b->props.brightness);
334 if (ret)
335 return ret;
5411552c 336
9be0fcb5
RF		 337 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
338 && !(b->props.state & BL_CORE_SUSPENDED)
339 && !(b->props.state & BL_CORE_FBBLANK));
340 return 0;
5411552c
CJ		 341}
342
9be0fcb5
RF		 343static const struct backlight_ops compalbl_ops = {
344 .get_brightness = bl_get_brightness,
345 .update_status = bl_update_status,
346};
347
348
349/* Wireless interface */
493e9143 350static int compal_rfkill_set(void *data, bool blocked)
5411552c 351{
493e9143 352 unsigned long radio = (unsigned long) data;
9be0fcb5
RF		 353 u8 result = ec_read_u8(WIRELESS_ADDR);
354 u8 value;
5411552c 355
493e9143
ML		 356 if (!blocked)
357 value = (u8) (result | radio);
358 else
359 value = (u8) (result & ~radio);
9be0fcb5 360 ec_write(WIRELESS_ADDR, value);
5411552c
CJ		 361
362 return 0;
363}
364
493e9143 365static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
5411552c 366{
9be0fcb5
RF		 367 u8 result = ec_read_u8(WIRELESS_ADDR);
368 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
493e9143 369 rfkill_set_hw_state(rfkill, hw_blocked);
5411552c
CJ		 370}
371
493e9143
ML		 372static const struct rfkill_ops compal_rfkill_ops = {
373 .poll = compal_rfkill_poll,
374 .set_block = compal_rfkill_set,
375};
376
9be0fcb5
RF		 377
378/* Wake_up interface */
379#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
380static ssize_t NAME##_show(struct device *dev, \
381 struct device_attribute *attr, char *buf) \
382{ \
383 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
384} \
385static ssize_t NAME##_store(struct device *dev, \
386 struct device_attribute *attr, const char *buf, size_t count) \
387{ \
388 int state; \
389 u8 old_val = ec_read_u8(ADDR); \
390 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
391 return -EINVAL; \
392 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
393 return count; \
394}
395
396SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
397SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
398SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
399SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
400SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
401SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
402
403
404/* General hwmon interface */
405static ssize_t hwmon_name_show(struct device *dev,
406 struct device_attribute *attr, char *buf)
5411552c 407{
9be0fcb5
RF		 408 return sprintf(buf, "%s\n", DRIVER_NAME);
409}
5411552c 410
5411552c 411
9be0fcb5
RF		 412/* Fan control interface */
413static ssize_t pwm_enable_show(struct device *dev,
414 struct device_attribute *attr, char *buf)
415{
416 struct compal_data *data = dev_get_drvdata(dev);
417 return sprintf(buf, "%d\n", data->pwm_enable);
418}
5411552c 419
9be0fcb5
RF		 420static ssize_t pwm_enable_store(struct device *dev,
421 struct device_attribute *attr, const char *buf, size_t count)
422{
423 struct compal_data *data = dev_get_drvdata(dev);
424 long val;
425 int err;
426 err = strict_strtol(buf, 10, &val);
427 if (err)
428 return err;
429 if (val < 0)
430 return -EINVAL;
431
432 data->pwm_enable = val;
433
434 switch (val) {
435 case 0: /* Full speed */
436 pwm_enable_control();
437 set_pwm(255);
438 break;
439 case 1: /* As set by pwm1 */
440 pwm_enable_control();
441 set_pwm(data->curr_pwm);
442 break;
443 default: /* Control by motherboard */
444 pwm_disable_control();
445 break;
5411552c
CJ		 446 }
447
9be0fcb5
RF		 448 return count;
449}
493e9143 450
9be0fcb5
RF		 451static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
452 char *buf)
453{
454 struct compal_data *data = dev_get_drvdata(dev);
455 return sprintf(buf, "%hhu\n", data->curr_pwm);
456}
493e9143 457
9be0fcb5
RF		 458static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
459 const char *buf, size_t count)
460{
461 struct compal_data *data = dev_get_drvdata(dev);
462 long val;
463 int err;
464 err = strict_strtol(buf, 10, &val);
465 if (err)
466 return err;
467 if (val < 0 || val > 255)
468 return -EINVAL;
493e9143 469
9be0fcb5 470 data->curr_pwm = val;
493e9143 471
9be0fcb5
RF		 472 if (data->pwm_enable != 1)
473 return count;
474 set_pwm(val);
475
476 return count;
5411552c
CJ		 477}
478
9be0fcb5
RF		 479static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
480 char *buf)
481{
482 return sprintf(buf, "%d\n", get_fan_rpm());
483}
5411552c 484
9be0fcb5
RF		 485
486/* Temperature interface */
487#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
488static ssize_t temp_##POSTFIX(struct device *dev, \
489 struct device_attribute *attr, char *buf) \
490{ \
491 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
492} \
493static ssize_t label_##POSTFIX(struct device *dev, \
494 struct device_attribute *attr, char *buf) \
495{ \
496 return sprintf(buf, "%s\n", LABEL); \
497}
498
499/* Labels as in service guide */
500TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
501TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
502TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
503TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
504TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
505TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
506
507
508/* Power supply interface */
509static int bat_status(void)
5411552c 510{
9be0fcb5
RF		 511 u8 status0 = ec_read_u8(BAT_STATUS0);
512 u8 status1 = ec_read_u8(BAT_STATUS1);
513
514 if (status0 & BAT_S0_CHARGING)
515 return POWER_SUPPLY_STATUS_CHARGING;
516 if (status0 & BAT_S0_DISCHARGE)
517 return POWER_SUPPLY_STATUS_DISCHARGING;
518 if (status1 & BAT_S1_FULL)
519 return POWER_SUPPLY_STATUS_FULL;
520 return POWER_SUPPLY_STATUS_NOT_CHARGING;
5411552c
CJ		 521}
522
9be0fcb5
RF		 523static int bat_health(void)
524{
525 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
526
527 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
528 return POWER_SUPPLY_HEALTH_OVERHEAT;
529 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
530 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
531 if (status & BAT_STOP_CHRG1_BAD_CELL)
532 return POWER_SUPPLY_HEALTH_DEAD;
533 if (status & BAT_STOP_CHRG1_COMM_FAIL)
534 return POWER_SUPPLY_HEALTH_UNKNOWN;
535 return POWER_SUPPLY_HEALTH_GOOD;
536}
5411552c 537
9be0fcb5 538static int bat_is_present(void)
5411552c 539{
9be0fcb5
RF		 540 u8 status = ec_read_u8(BAT_STATUS2);
541 return ((status & BAT_S1_EXISTS) != 0);
542}
543
544static int bat_technology(void)
545{
546 u8 status = ec_read_u8(BAT_STATUS1);
547
548 if (status & BAT_S1_LiION_OR_NiMH)
549 return POWER_SUPPLY_TECHNOLOGY_LION;
550 return POWER_SUPPLY_TECHNOLOGY_NiMH;
551}
552
553static int bat_capacity_level(void)
554{
555 u8 status0 = ec_read_u8(BAT_STATUS0);
556 u8 status1 = ec_read_u8(BAT_STATUS1);
557 u8 status2 = ec_read_u8(BAT_STATUS2);
558
559 if (status0 & BAT_S0_DISCHRG_CRITICAL
560 || status1 & BAT_S1_EMPTY
561 || status2 & BAT_S2_LOW_LOW)
562 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
563 if (status0 & BAT_S0_LOW)
564 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
565 if (status1 & BAT_S1_FULL)
566 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
567 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
568}
569
570static int bat_get_property(struct power_supply *psy,
571 enum power_supply_property psp,
572 union power_supply_propval *val)
573{
574 struct compal_data *data;
575 data = container_of(psy, struct compal_data, psy);
576
577 switch (psp) {
578 case POWER_SUPPLY_PROP_STATUS:
579 val->intval = bat_status();
580 break;
581 case POWER_SUPPLY_PROP_HEALTH:
582 val->intval = bat_health();
583 break;
584 case POWER_SUPPLY_PROP_PRESENT:
585 val->intval = bat_is_present();
586 break;
587 case POWER_SUPPLY_PROP_TECHNOLOGY:
588 val->intval = bat_technology();
589 break;
590 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
591 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
592 break;
593 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
594 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
595 break;
596 case POWER_SUPPLY_PROP_CURRENT_NOW:
597 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
598 break;
599 case POWER_SUPPLY_PROP_CURRENT_AVG:
600 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
601 break;
602 case POWER_SUPPLY_PROP_POWER_NOW:
603 val->intval = ec_read_u8(BAT_POWER) * 1000000;
604 break;
605 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
606 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
607 break;
608 case POWER_SUPPLY_PROP_CHARGE_NOW:
609 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
610 break;
611 case POWER_SUPPLY_PROP_CAPACITY:
612 val->intval = ec_read_u8(BAT_CAPACITY);
613 break;
614 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
615 val->intval = bat_capacity_level();
616 break;
617 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
618 * the number of degrees, whereas BAT_TEMP is somewhat more
619 * complicated. It looks like this is a negative nember with a
620 * 100/256 divider and an offset of 222. Both were determined
621 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
622 case POWER_SUPPLY_PROP_TEMP:
623 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
624 break;
625 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
626 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
627 break;
628 /* Neither the model name nor manufacturer name work for me. */
629 case POWER_SUPPLY_PROP_MODEL_NAME:
630 val->strval = data->bat_model_name;
631 break;
632 case POWER_SUPPLY_PROP_MANUFACTURER:
633 val->strval = data->bat_manufacturer_name;
634 break;
635 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
636 val->strval = data->bat_serial_number;
637 break;
638 default:
639 break;
640 }
641 return 0;
5411552c
CJ		 642}
643
5411552c 644
5411552c 645
5411552c 646
9be0fcb5
RF		 647
648/* ============== */
649/* Driver Globals */
650/* ============== */
651static DEVICE_ATTR(wake_up_pme,
652 0644, wake_up_pme_show, wake_up_pme_store);
653static DEVICE_ATTR(wake_up_modem,
654 0644, wake_up_modem_show, wake_up_modem_store);
655static DEVICE_ATTR(wake_up_lan,
656 0644, wake_up_lan_show, wake_up_lan_store);
657static DEVICE_ATTR(wake_up_wlan,
658 0644, wake_up_wlan_show, wake_up_wlan_store);
659static DEVICE_ATTR(wake_up_key,
660 0644, wake_up_key_show, wake_up_key_store);
661static DEVICE_ATTR(wake_up_mouse,
662 0644, wake_up_mouse_show, wake_up_mouse_store);
663
664static SENSOR_DEVICE_ATTR(name, S_IRUGO, hwmon_name_show, NULL, 1);
665static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL, 1);
666static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL, 1);
667static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL, 1);
668static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL, 1);
669static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL, 1);
670static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL, 1);
671static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL, 1);
672static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL, 1);
673static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL, 1);
674static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL, 1);
675static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL, 1);
676static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL, 1);
677static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL, 1);
678static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store, 1);
679static SENSOR_DEVICE_ATTR(pwm1_enable,
680 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store, 0);
681
682static struct attribute *compal_attributes[] = {
683 &dev_attr_wake_up_pme.attr,
684 &dev_attr_wake_up_modem.attr,
685 &dev_attr_wake_up_lan.attr,
686 &dev_attr_wake_up_wlan.attr,
687 &dev_attr_wake_up_key.attr,
688 &dev_attr_wake_up_mouse.attr,
689 /* Maybe put the sensor-stuff in a separate hwmon-driver? That way,
690 * the hwmon sysfs won't be cluttered with the above files. */
691 &sensor_dev_attr_name.dev_attr.attr,
692 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
693 &sensor_dev_attr_pwm1.dev_attr.attr,
694 &sensor_dev_attr_fan1_input.dev_attr.attr,
695 &sensor_dev_attr_temp1_input.dev_attr.attr,
696 &sensor_dev_attr_temp2_input.dev_attr.attr,
697 &sensor_dev_attr_temp3_input.dev_attr.attr,
698 &sensor_dev_attr_temp4_input.dev_attr.attr,
699 &sensor_dev_attr_temp5_input.dev_attr.attr,
700 &sensor_dev_attr_temp6_input.dev_attr.attr,
701 &sensor_dev_attr_temp1_label.dev_attr.attr,
702 &sensor_dev_attr_temp2_label.dev_attr.attr,
703 &sensor_dev_attr_temp3_label.dev_attr.attr,
704 &sensor_dev_attr_temp4_label.dev_attr.attr,
705 &sensor_dev_attr_temp5_label.dev_attr.attr,
706 &sensor_dev_attr_temp6_label.dev_attr.attr,
707 NULL
708};
709
710static struct attribute_group compal_attribute_group = {
711 .attrs = compal_attributes
712};
713
714static int __devinit compal_probe(struct platform_device *);
715static int __devexit compal_remove(struct platform_device *);
5411552c
CJ		 716static struct platform_driver compal_driver = {
717 .driver = {
9be0fcb5 718 .name = DRIVER_NAME,
5411552c 719 .owner = THIS_MODULE,
9be0fcb5
RF		 720 },
721 .probe = compal_probe,
722 .remove = __devexit_p(compal_remove)
723};
724
725static enum power_supply_property compal_bat_properties[] = {
726 POWER_SUPPLY_PROP_STATUS,
727 POWER_SUPPLY_PROP_HEALTH,
728 POWER_SUPPLY_PROP_PRESENT,
729 POWER_SUPPLY_PROP_TECHNOLOGY,
730 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
731 POWER_SUPPLY_PROP_VOLTAGE_NOW,
732 POWER_SUPPLY_PROP_CURRENT_NOW,
733 POWER_SUPPLY_PROP_CURRENT_AVG,
734 POWER_SUPPLY_PROP_POWER_NOW,
735 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
736 POWER_SUPPLY_PROP_CHARGE_NOW,
737 POWER_SUPPLY_PROP_CAPACITY,
738 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
739 POWER_SUPPLY_PROP_TEMP,
740 POWER_SUPPLY_PROP_TEMP_AMBIENT,
741 POWER_SUPPLY_PROP_MODEL_NAME,
742 POWER_SUPPLY_PROP_MANUFACTURER,
743 POWER_SUPPLY_PROP_SERIAL_NUMBER,
5411552c
CJ		 744};
745
9be0fcb5
RF		 746static struct backlight_device *compalbl_device;
747
748static struct platform_device *compal_device;
749
750static struct rfkill *wifi_rfkill;
751static struct rfkill *bt_rfkill;
752
753
754
755
756
757/* =================================== */
758/* Initialization & clean-up functions */
759/* =================================== */
5411552c
CJ		 760
761static int dmi_check_cb(const struct dmi_system_id *id)
762{
9be0fcb5 763 printk(KERN_INFO DRIVER_NAME": Identified laptop model '%s'\n",
5411552c 764 id->ident);
9be0fcb5
RF		 765 extra_features = false;
766 return 0;
767}
5411552c 768
9be0fcb5
RF		 769static int dmi_check_cb_extra(const struct dmi_system_id *id)
770{
771 printk(KERN_INFO DRIVER_NAME": Identified laptop model '%s', "
772 "enabling extra features\n",
773 id->ident);
774 extra_features = true;
5411552c
CJ		 775 return 0;
776}
777
778static 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 },
34325b9d
ML		 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 },
c3f755e3
VE		 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 },
34325b9d
ML		 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 },
9be0fcb5
RF		 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 },
4a198be7
AAC		 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 },
5411552c
CJ		 883 { }
884};
885
9be0fcb5
RF		 886static void initialize_power_supply_data(struct compal_data *data)
887{
888 data->psy.name = DRIVER_NAME;
889 data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
890 data->psy.properties = compal_bat_properties;
891 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties);
892 data->psy.get_property = bat_get_property;
893
894 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
895 data->bat_manufacturer_name,
896 BAT_MANUFACTURER_NAME_LEN);
897 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
898
899 ec_read_sequence(BAT_MODEL_NAME_ADDR,
900 data->bat_model_name,
901 BAT_MODEL_NAME_LEN);
902 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
903
904 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
905 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
906}
907
908static void initialize_fan_control_data(struct compal_data *data)
909{
910 data->pwm_enable = 2; /* Keep motherboard in control for now */
911 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
912 if we take over... */
913}
914
915static int setup_rfkill(void)
916{
917 int ret;
918
919 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
920 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
921 (void *) WIRELESS_WLAN);
922 if (!wifi_rfkill)
923 return -ENOMEM;
924
925 ret = rfkill_register(wifi_rfkill);
926 if (ret)
927 goto err_wifi;
928
929 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
930 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
931 (void *) WIRELESS_BT);
932 if (!bt_rfkill) {
933 ret = -ENOMEM;
934 goto err_allocate_bt;
935 }
936 ret = rfkill_register(bt_rfkill);
937 if (ret)
938 goto err_register_bt;
939
940 return 0;
941
942err_register_bt:
943 rfkill_destroy(bt_rfkill);
944
945err_allocate_bt:
946 rfkill_unregister(wifi_rfkill);
947
948err_wifi:
949 rfkill_destroy(wifi_rfkill);
950
951 return ret;
952}
953
5411552c
CJ		 954static int __init compal_init(void)
955{
956 int ret;
957
9be0fcb5
RF		 958 if (acpi_disabled) {
959 printk(KERN_ERR DRIVER_NAME": ACPI needs to be enabled for "
960 "this driver to work!\n");
5411552c 961 return -ENODEV;
9be0fcb5 962 }
5411552c 963
9be0fcb5
RF		 964 if (!force && !dmi_check_system(compal_dmi_table)) {
965 printk(KERN_ERR DRIVER_NAME": Motherboard not recognized (You "
966 "could try the module's force-parameter)");
5411552c 967 return -ENODEV;
9be0fcb5 968 }
5411552c 969
29454f17 970 if (!acpi_video_backlight_support()) {
a19a6ee6
MG		 971 struct backlight_properties props;
972 memset(&props, 0, sizeof(struct backlight_properties));
bb7ca747 973 props.type = BACKLIGHT_PLATFORM;
9be0fcb5
RF		 974 props.max_brightness = BACKLIGHT_LEVEL_MAX;
975 compalbl_device = backlight_device_register(DRIVER_NAME,
a19a6ee6
MG		 976 NULL, NULL,
977 &compalbl_ops,
978 &props);
29454f17
TR		 979 if (IS_ERR(compalbl_device))
980 return PTR_ERR(compalbl_device);
29454f17 981 }
5411552c
CJ		 982
983 ret = platform_driver_register(&compal_driver);
984 if (ret)
9be0fcb5 985 goto err_backlight;
5411552c 986
9be0fcb5 987 compal_device = platform_device_alloc(DRIVER_NAME, -1);
5411552c
CJ		 988 if (!compal_device) {
989 ret = -ENOMEM;
9be0fcb5 990 goto err_platform_driver;
5411552c
CJ		 991 }
992
9be0fcb5 993 ret = platform_device_add(compal_device); /* This calls compal_probe */
5411552c 994 if (ret)
9be0fcb5 995 goto err_platform_device;
5411552c 996
493e9143 997 ret = setup_rfkill();
5411552c 998 if (ret)
9be0fcb5 999 goto err_rfkill;
5411552c 1000
9be0fcb5
RF		 1001 printk(KERN_INFO DRIVER_NAME": Driver "DRIVER_VERSION
1002 " successfully loaded\n");
5411552c
CJ		 1003 return 0;
1004
9be0fcb5 1005err_rfkill:
5411552c
CJ		 1006 platform_device_del(compal_device);
1007
9be0fcb5 1008err_platform_device:
5411552c
CJ		 1009 platform_device_put(compal_device);
1010
9be0fcb5 1011err_platform_driver:
5411552c
CJ		 1012 platform_driver_unregister(&compal_driver);
1013
9be0fcb5 1014err_backlight:
5411552c
CJ		 1015 backlight_device_unregister(compalbl_device);
1016
1017 return ret;
1018}
1019
9be0fcb5 1020static int __devinit compal_probe(struct platform_device *pdev)
5411552c 1021{
9be0fcb5
RF		 1022 int err;
1023 struct compal_data *data;
1024
1025 if (!extra_features)
1026 return 0;
1027
1028 /* Fan control */
1029 data = kzalloc(sizeof(struct compal_data), GFP_KERNEL);
1030 if (!data)
1031 return -ENOMEM;
1032
1033 initialize_fan_control_data(data);
1034
1035 err = sysfs_create_group(&pdev->dev.kobj, &compal_attribute_group);
1036 if (err)
1037 return err;
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}
5411552c 1056
9be0fcb5
RF		 1057static void __exit compal_cleanup(void)
1058{
5411552c
CJ		 1059 platform_device_unregister(compal_device);
1060 platform_driver_unregister(&compal_driver);
1061 backlight_device_unregister(compalbl_device);
493e9143 1062 rfkill_unregister(wifi_rfkill);
493e9143 1063 rfkill_unregister(bt_rfkill);
9be0fcb5 1064 rfkill_destroy(wifi_rfkill);
493e9143 1065 rfkill_destroy(bt_rfkill);
5411552c 1066
9be0fcb5 1067 printk(KERN_INFO DRIVER_NAME": Driver unloaded\n");
5411552c
CJ		 1068}
1069
9be0fcb5
RF		 1070static int __devexit compal_remove(struct platform_device *pdev)
1071{
1072 struct compal_data *data;
1073
1074 if (!extra_features)
1075 return 0;
1076
1077 printk(KERN_INFO DRIVER_NAME": Unloading: resetting fan control "
1078 "to motherboard\n");
1079 pwm_disable_control();
1080
1081 data = platform_get_drvdata(pdev);
1082 hwmon_device_unregister(data->hwmon_dev);
1083 power_supply_unregister(&data->psy);
1084
1085 platform_set_drvdata(pdev, NULL);
1086 kfree(data);
1087
1088 sysfs_remove_group(&pdev->dev.kobj, &compal_attribute_group);
1089
1090 return 0;
1091}
1092
1093
5411552c
CJ		 1094module_init(compal_init);
1095module_exit(compal_cleanup);
1096
1097MODULE_AUTHOR("Cezary Jackiewicz");
9be0fcb5 1098MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
5411552c 1099MODULE_DESCRIPTION("Compal Laptop Support");
9be0fcb5 1100MODULE_VERSION(DRIVER_VERSION);
5411552c
CJ		 1101MODULE_LICENSE("GPL");
1102
1103MODULE_ALIAS("dmi:*:rnIFL90:rvrIFT00:*");
1104MODULE_ALIAS("dmi:*:rnIFL90:rvrREFERENCE:*");
1105MODULE_ALIAS("dmi:*:rnIFL91:rvrIFT00:*");
1106MODULE_ALIAS("dmi:*:rnJFL92:rvrIFT00:*");
1107MODULE_ALIAS("dmi:*:rnIFT00:rvrIFT00:*");
9be0fcb5 1108MODULE_ALIAS("dmi:*:rnJHL90:rvrREFERENCE:*");
34325b9d
ML		 1109MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron910:*");
1110MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1010:*");
1111MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1011:*");
c3f755e3 1112MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1012:*");
34325b9d
ML		 1113MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1110:*");
1114MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1210:*");
Linux 6.x block layer and io_uring tree(s)