Loading...
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#include <acpi/video.h>
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#define BAT_CHARGE_LIMIT 0x03
155#define BAT_CHARGE_LIMIT_MAX 100
156
157#define BAT_S0_DISCHARGE (1 << 0)
158#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
159#define BAT_S0_LOW (1 << 3)
160#define BAT_S0_CHARGING (1 << 1)
161#define BAT_S0_AC (1 << 7)
162#define BAT_S1_EXISTS (1 << 0)
163#define BAT_S1_FULL (1 << 1)
164#define BAT_S1_EMPTY (1 << 2)
165#define BAT_S1_LiION_OR_NiMH (1 << 7)
166#define BAT_S2_LOW_LOW (1 << 0)
167#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
168#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
169#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
170#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
171
172
173/* ======= */
174/* Structs */
175/* ======= */
176struct compal_data{
177 /* Fan control */
178 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
179 unsigned char curr_pwm;
180
181 /* Power supply */
182 struct power_supply *psy;
183 struct power_supply_info psy_info;
184 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
185 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
186 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
187};
188
189
190/* =============== */
191/* General globals */
192/* =============== */
193static bool force;
194module_param(force, bool, 0);
195MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
196
197/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
198 * only gets enabled on a JHL90 board. Might work with the others too */
199static bool extra_features;
200
201/* Nasty stuff. For some reason the fan control is very un-linear. I've
202 * come up with these values by looping through the possible inputs and
203 * watching the output of address 0x4F (do an ec_transaction writing 0x33
204 * into 0x4F and read a few bytes from the output, like so:
205 * u8 writeData = 0x33;
206 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
207 * That address is labeled "fan1 table information" in the service manual.
208 * It should be clear which value in 'buffer' changes). This seems to be
209 * related to fan speed. It isn't a proper 'realtime' fan speed value
210 * though, because physically stopping or speeding up the fan doesn't
211 * change it. It might be the average voltage or current of the pwm output.
212 * Nevertheless, it is more fine-grained than the actual RPM reading */
213static const unsigned char pwm_lookup_table[256] = {
214 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
215 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
216 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
217 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
218 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
219 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
220 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
221 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
222 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
223 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
224 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
225 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
226 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
227 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
228 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
229 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
230 187, 187, 193, 50
231};
232
233
234
235
236/* ========================= */
237/* Hardware access functions */
238/* ========================= */
239/* General access */
240static u8 ec_read_u8(u8 addr)
241{
242 u8 value;
243 ec_read(addr, &value);
244 return value;
245}
246
247static s8 ec_read_s8(u8 addr)
248{
249 return (s8)ec_read_u8(addr);
250}
251
252static u16 ec_read_u16(u8 addr)
253{
254 int hi, lo;
255 lo = ec_read_u8(addr);
256 hi = ec_read_u8(addr + 1);
257 return (hi << 8) + lo;
258}
259
260static s16 ec_read_s16(u8 addr)
261{
262 return (s16) ec_read_u16(addr);
263}
264
265static void ec_read_sequence(u8 addr, u8 *buf, int len)
266{
267 int i;
268 for (i = 0; i < len; i++)
269 ec_read(addr + i, buf + i);
270}
271
272
273/* Backlight access */
274static int set_backlight_level(int level)
275{
276 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
277 return -EINVAL;
278
279 ec_write(BACKLIGHT_LEVEL_ADDR, level);
280
281 return 0;
282}
283
284static int get_backlight_level(void)
285{
286 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
287}
288
289static void set_backlight_state(bool on)
290{
291 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
292 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
293}
294
295
296/* Fan control access */
297static void pwm_enable_control(void)
298{
299 unsigned char writeData = PWM_ENABLE_DATA;
300 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
301}
302
303static void pwm_disable_control(void)
304{
305 unsigned char writeData = PWM_DISABLE_DATA;
306 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
307}
308
309static void set_pwm(int pwm)
310{
311 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
312}
313
314static int get_fan_rpm(void)
315{
316 u8 value, data = FAN_DATA;
317 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
318 return 100 * (int)value;
319}
320
321
322
323
324/* =================== */
325/* Interface functions */
326/* =================== */
327
328/* Backlight interface */
329static int bl_get_brightness(struct backlight_device *b)
330{
331 return get_backlight_level();
332}
333
334static int bl_update_status(struct backlight_device *b)
335{
336 int ret = set_backlight_level(b->props.brightness);
337 if (ret)
338 return ret;
339
340 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
341 && !(b->props.state & BL_CORE_SUSPENDED)
342 && !(b->props.state & BL_CORE_FBBLANK));
343 return 0;
344}
345
346static const struct backlight_ops compalbl_ops = {
347 .get_brightness = bl_get_brightness,
348 .update_status = bl_update_status,
349};
350
351
352/* Wireless interface */
353static int compal_rfkill_set(void *data, bool blocked)
354{
355 unsigned long radio = (unsigned long) data;
356 u8 result = ec_read_u8(WIRELESS_ADDR);
357 u8 value;
358
359 if (!blocked)
360 value = (u8) (result | radio);
361 else
362 value = (u8) (result & ~radio);
363 ec_write(WIRELESS_ADDR, value);
364
365 return 0;
366}
367
368static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
369{
370 u8 result = ec_read_u8(WIRELESS_ADDR);
371 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
372 rfkill_set_hw_state(rfkill, hw_blocked);
373}
374
375static const struct rfkill_ops compal_rfkill_ops = {
376 .poll = compal_rfkill_poll,
377 .set_block = compal_rfkill_set,
378};
379
380
381/* Wake_up interface */
382#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
383static ssize_t NAME##_show(struct device *dev, \
384 struct device_attribute *attr, char *buf) \
385{ \
386 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
387} \
388static ssize_t NAME##_store(struct device *dev, \
389 struct device_attribute *attr, const char *buf, size_t count) \
390{ \
391 int state; \
392 u8 old_val = ec_read_u8(ADDR); \
393 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
394 return -EINVAL; \
395 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
396 return count; \
397}
398
399SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
400SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
401SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
402SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
403SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
404SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
405
406/* Fan control interface */
407static ssize_t pwm_enable_show(struct device *dev,
408 struct device_attribute *attr, char *buf)
409{
410 struct compal_data *data = dev_get_drvdata(dev);
411 return sprintf(buf, "%d\n", data->pwm_enable);
412}
413
414static ssize_t pwm_enable_store(struct device *dev,
415 struct device_attribute *attr, const char *buf, size_t count)
416{
417 struct compal_data *data = dev_get_drvdata(dev);
418 long val;
419 int err;
420
421 err = kstrtol(buf, 10, &val);
422 if (err)
423 return err;
424 if (val < 0)
425 return -EINVAL;
426
427 data->pwm_enable = val;
428
429 switch (val) {
430 case 0: /* Full speed */
431 pwm_enable_control();
432 set_pwm(255);
433 break;
434 case 1: /* As set by pwm1 */
435 pwm_enable_control();
436 set_pwm(data->curr_pwm);
437 break;
438 default: /* Control by motherboard */
439 pwm_disable_control();
440 break;
441 }
442
443 return count;
444}
445
446static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
447 char *buf)
448{
449 struct compal_data *data = dev_get_drvdata(dev);
450 return sprintf(buf, "%hhu\n", data->curr_pwm);
451}
452
453static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
454 const char *buf, size_t count)
455{
456 struct compal_data *data = dev_get_drvdata(dev);
457 long val;
458 int err;
459
460 err = kstrtol(buf, 10, &val);
461 if (err)
462 return err;
463 if (val < 0 || val > 255)
464 return -EINVAL;
465
466 data->curr_pwm = val;
467
468 if (data->pwm_enable != 1)
469 return count;
470 set_pwm(val);
471
472 return count;
473}
474
475static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
476 char *buf)
477{
478 return sprintf(buf, "%d\n", get_fan_rpm());
479}
480
481
482/* Temperature interface */
483#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
484static ssize_t temp_##POSTFIX(struct device *dev, \
485 struct device_attribute *attr, char *buf) \
486{ \
487 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
488} \
489static ssize_t label_##POSTFIX(struct device *dev, \
490 struct device_attribute *attr, char *buf) \
491{ \
492 return sprintf(buf, "%s\n", LABEL); \
493}
494
495/* Labels as in service guide */
496TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
497TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
498TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
499TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
500TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
501TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
502
503
504/* Power supply interface */
505static int bat_status(void)
506{
507 u8 status0 = ec_read_u8(BAT_STATUS0);
508 u8 status1 = ec_read_u8(BAT_STATUS1);
509
510 if (status0 & BAT_S0_CHARGING)
511 return POWER_SUPPLY_STATUS_CHARGING;
512 if (status0 & BAT_S0_DISCHARGE)
513 return POWER_SUPPLY_STATUS_DISCHARGING;
514 if (status1 & BAT_S1_FULL)
515 return POWER_SUPPLY_STATUS_FULL;
516 return POWER_SUPPLY_STATUS_NOT_CHARGING;
517}
518
519static int bat_health(void)
520{
521 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
522
523 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
524 return POWER_SUPPLY_HEALTH_OVERHEAT;
525 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
526 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
527 if (status & BAT_STOP_CHRG1_BAD_CELL)
528 return POWER_SUPPLY_HEALTH_DEAD;
529 if (status & BAT_STOP_CHRG1_COMM_FAIL)
530 return POWER_SUPPLY_HEALTH_UNKNOWN;
531 return POWER_SUPPLY_HEALTH_GOOD;
532}
533
534static int bat_is_present(void)
535{
536 u8 status = ec_read_u8(BAT_STATUS2);
537 return ((status & BAT_S1_EXISTS) != 0);
538}
539
540static int bat_technology(void)
541{
542 u8 status = ec_read_u8(BAT_STATUS1);
543
544 if (status & BAT_S1_LiION_OR_NiMH)
545 return POWER_SUPPLY_TECHNOLOGY_LION;
546 return POWER_SUPPLY_TECHNOLOGY_NiMH;
547}
548
549static int bat_capacity_level(void)
550{
551 u8 status0 = ec_read_u8(BAT_STATUS0);
552 u8 status1 = ec_read_u8(BAT_STATUS1);
553 u8 status2 = ec_read_u8(BAT_STATUS2);
554
555 if (status0 & BAT_S0_DISCHRG_CRITICAL
556 || status1 & BAT_S1_EMPTY
557 || status2 & BAT_S2_LOW_LOW)
558 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
559 if (status0 & BAT_S0_LOW)
560 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
561 if (status1 & BAT_S1_FULL)
562 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
563 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
564}
565
566static int bat_get_property(struct power_supply *psy,
567 enum power_supply_property psp,
568 union power_supply_propval *val)
569{
570 struct compal_data *data = power_supply_get_drvdata(psy);
571
572 switch (psp) {
573 case POWER_SUPPLY_PROP_STATUS:
574 val->intval = bat_status();
575 break;
576 case POWER_SUPPLY_PROP_HEALTH:
577 val->intval = bat_health();
578 break;
579 case POWER_SUPPLY_PROP_PRESENT:
580 val->intval = bat_is_present();
581 break;
582 case POWER_SUPPLY_PROP_TECHNOLOGY:
583 val->intval = bat_technology();
584 break;
585 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
586 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
587 break;
588 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
589 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
590 break;
591 case POWER_SUPPLY_PROP_CURRENT_NOW:
592 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
593 break;
594 case POWER_SUPPLY_PROP_CURRENT_AVG:
595 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
596 break;
597 case POWER_SUPPLY_PROP_POWER_NOW:
598 val->intval = ec_read_u8(BAT_POWER) * 1000000;
599 break;
600 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
601 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
602 break;
603 case POWER_SUPPLY_PROP_CHARGE_NOW:
604 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
605 break;
606 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
607 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
608 break;
609 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
610 val->intval = BAT_CHARGE_LIMIT_MAX;
611 break;
612 case POWER_SUPPLY_PROP_CAPACITY:
613 val->intval = ec_read_u8(BAT_CAPACITY);
614 break;
615 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
616 val->intval = bat_capacity_level();
617 break;
618 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
619 * the number of degrees, whereas BAT_TEMP is somewhat more
620 * complicated. It looks like this is a negative nember with a
621 * 100/256 divider and an offset of 222. Both were determined
622 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
623 case POWER_SUPPLY_PROP_TEMP:
624 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
625 break;
626 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
627 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
628 break;
629 /* Neither the model name nor manufacturer name work for me. */
630 case POWER_SUPPLY_PROP_MODEL_NAME:
631 val->strval = data->bat_model_name;
632 break;
633 case POWER_SUPPLY_PROP_MANUFACTURER:
634 val->strval = data->bat_manufacturer_name;
635 break;
636 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
637 val->strval = data->bat_serial_number;
638 break;
639 default:
640 break;
641 }
642 return 0;
643}
644
645static int bat_set_property(struct power_supply *psy,
646 enum power_supply_property psp,
647 const union power_supply_propval *val)
648{
649 int level;
650
651 switch (psp) {
652 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
653 level = val->intval;
654 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
655 return -EINVAL;
656 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
657 return -EIO;
658 break;
659 default:
660 break;
661 }
662 return 0;
663}
664
665static int bat_writeable_property(struct power_supply *psy,
666 enum power_supply_property psp)
667{
668 switch (psp) {
669 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
670 return 1;
671 default:
672 return 0;
673 }
674}
675
676
677
678
679/* ============== */
680/* Driver Globals */
681/* ============== */
682static DEVICE_ATTR(wake_up_pme,
683 0644, wake_up_pme_show, wake_up_pme_store);
684static DEVICE_ATTR(wake_up_modem,
685 0644, wake_up_modem_show, wake_up_modem_store);
686static DEVICE_ATTR(wake_up_lan,
687 0644, wake_up_lan_show, wake_up_lan_store);
688static DEVICE_ATTR(wake_up_wlan,
689 0644, wake_up_wlan_show, wake_up_wlan_store);
690static DEVICE_ATTR(wake_up_key,
691 0644, wake_up_key_show, wake_up_key_store);
692static DEVICE_ATTR(wake_up_mouse,
693 0644, wake_up_mouse_show, wake_up_mouse_store);
694
695static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
696static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
697static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
698static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
699static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
700static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
701static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
702static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
703static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
704static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
705static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
706static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
707static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
708static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
709static DEVICE_ATTR(pwm1_enable,
710 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
711
712static struct attribute *compal_platform_attrs[] = {
713 &dev_attr_wake_up_pme.attr,
714 &dev_attr_wake_up_modem.attr,
715 &dev_attr_wake_up_lan.attr,
716 &dev_attr_wake_up_wlan.attr,
717 &dev_attr_wake_up_key.attr,
718 &dev_attr_wake_up_mouse.attr,
719 NULL
720};
721static struct attribute_group compal_platform_attr_group = {
722 .attrs = compal_platform_attrs
723};
724
725static struct attribute *compal_hwmon_attrs[] = {
726 &dev_attr_pwm1_enable.attr,
727 &dev_attr_pwm1.attr,
728 &dev_attr_fan1_input.attr,
729 &dev_attr_temp1_input.attr,
730 &dev_attr_temp2_input.attr,
731 &dev_attr_temp3_input.attr,
732 &dev_attr_temp4_input.attr,
733 &dev_attr_temp5_input.attr,
734 &dev_attr_temp6_input.attr,
735 &dev_attr_temp1_label.attr,
736 &dev_attr_temp2_label.attr,
737 &dev_attr_temp3_label.attr,
738 &dev_attr_temp4_label.attr,
739 &dev_attr_temp5_label.attr,
740 &dev_attr_temp6_label.attr,
741 NULL
742};
743ATTRIBUTE_GROUPS(compal_hwmon);
744
745static int compal_probe(struct platform_device *);
746static int compal_remove(struct platform_device *);
747static struct platform_driver compal_driver = {
748 .driver = {
749 .name = DRIVER_NAME,
750 },
751 .probe = compal_probe,
752 .remove = compal_remove,
753};
754
755static enum power_supply_property compal_bat_properties[] = {
756 POWER_SUPPLY_PROP_STATUS,
757 POWER_SUPPLY_PROP_HEALTH,
758 POWER_SUPPLY_PROP_PRESENT,
759 POWER_SUPPLY_PROP_TECHNOLOGY,
760 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
761 POWER_SUPPLY_PROP_VOLTAGE_NOW,
762 POWER_SUPPLY_PROP_CURRENT_NOW,
763 POWER_SUPPLY_PROP_CURRENT_AVG,
764 POWER_SUPPLY_PROP_POWER_NOW,
765 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
766 POWER_SUPPLY_PROP_CHARGE_NOW,
767 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
768 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
769 POWER_SUPPLY_PROP_CAPACITY,
770 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
771 POWER_SUPPLY_PROP_TEMP,
772 POWER_SUPPLY_PROP_TEMP_AMBIENT,
773 POWER_SUPPLY_PROP_MODEL_NAME,
774 POWER_SUPPLY_PROP_MANUFACTURER,
775 POWER_SUPPLY_PROP_SERIAL_NUMBER,
776};
777
778static struct backlight_device *compalbl_device;
779
780static struct platform_device *compal_device;
781
782static struct rfkill *wifi_rfkill;
783static struct rfkill *bt_rfkill;
784
785
786
787
788
789/* =================================== */
790/* Initialization & clean-up functions */
791/* =================================== */
792
793static int dmi_check_cb(const struct dmi_system_id *id)
794{
795 pr_info("Identified laptop model '%s'\n", id->ident);
796 extra_features = false;
797 return 1;
798}
799
800static int dmi_check_cb_extra(const struct dmi_system_id *id)
801{
802 pr_info("Identified laptop model '%s', enabling extra features\n",
803 id->ident);
804 extra_features = true;
805 return 1;
806}
807
808static struct dmi_system_id __initdata compal_dmi_table[] = {
809 {
810 .ident = "FL90/IFL90",
811 .matches = {
812 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
813 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
814 },
815 .callback = dmi_check_cb
816 },
817 {
818 .ident = "FL90/IFL90",
819 .matches = {
820 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
821 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
822 },
823 .callback = dmi_check_cb
824 },
825 {
826 .ident = "FL91/IFL91",
827 .matches = {
828 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
829 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
830 },
831 .callback = dmi_check_cb
832 },
833 {
834 .ident = "FL92/JFL92",
835 .matches = {
836 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
837 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
838 },
839 .callback = dmi_check_cb
840 },
841 {
842 .ident = "FT00/IFT00",
843 .matches = {
844 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
845 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
846 },
847 .callback = dmi_check_cb
848 },
849 {
850 .ident = "Dell Mini 9",
851 .matches = {
852 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
853 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
854 },
855 .callback = dmi_check_cb
856 },
857 {
858 .ident = "Dell Mini 10",
859 .matches = {
860 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
861 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
862 },
863 .callback = dmi_check_cb
864 },
865 {
866 .ident = "Dell Mini 10v",
867 .matches = {
868 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
869 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
870 },
871 .callback = dmi_check_cb
872 },
873 {
874 .ident = "Dell Mini 1012",
875 .matches = {
876 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
877 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
878 },
879 .callback = dmi_check_cb
880 },
881 {
882 .ident = "Dell Inspiron 11z",
883 .matches = {
884 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
885 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
886 },
887 .callback = dmi_check_cb
888 },
889 {
890 .ident = "Dell Mini 12",
891 .matches = {
892 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
893 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
894 },
895 .callback = dmi_check_cb
896 },
897 {
898 .ident = "JHL90",
899 .matches = {
900 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
901 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
902 },
903 .callback = dmi_check_cb_extra
904 },
905 {
906 .ident = "KHLB2",
907 .matches = {
908 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
909 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
910 },
911 .callback = dmi_check_cb_extra
912 },
913 { }
914};
915MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
916
917static const struct power_supply_desc psy_bat_desc = {
918 .name = DRIVER_NAME,
919 .type = POWER_SUPPLY_TYPE_BATTERY,
920 .properties = compal_bat_properties,
921 .num_properties = ARRAY_SIZE(compal_bat_properties),
922 .get_property = bat_get_property,
923 .set_property = bat_set_property,
924 .property_is_writeable = bat_writeable_property,
925};
926
927static void initialize_power_supply_data(struct compal_data *data)
928{
929 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
930 data->bat_manufacturer_name,
931 BAT_MANUFACTURER_NAME_LEN);
932 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
933
934 ec_read_sequence(BAT_MODEL_NAME_ADDR,
935 data->bat_model_name,
936 BAT_MODEL_NAME_LEN);
937 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
938
939 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
940 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
941}
942
943static void initialize_fan_control_data(struct compal_data *data)
944{
945 data->pwm_enable = 2; /* Keep motherboard in control for now */
946 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
947 if we take over... */
948}
949
950static int setup_rfkill(void)
951{
952 int ret;
953
954 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
955 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
956 (void *) WIRELESS_WLAN);
957 if (!wifi_rfkill)
958 return -ENOMEM;
959
960 ret = rfkill_register(wifi_rfkill);
961 if (ret)
962 goto err_wifi;
963
964 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
965 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
966 (void *) WIRELESS_BT);
967 if (!bt_rfkill) {
968 ret = -ENOMEM;
969 goto err_allocate_bt;
970 }
971 ret = rfkill_register(bt_rfkill);
972 if (ret)
973 goto err_register_bt;
974
975 return 0;
976
977err_register_bt:
978 rfkill_destroy(bt_rfkill);
979
980err_allocate_bt:
981 rfkill_unregister(wifi_rfkill);
982
983err_wifi:
984 rfkill_destroy(wifi_rfkill);
985
986 return ret;
987}
988
989static int __init compal_init(void)
990{
991 int ret;
992
993 if (acpi_disabled) {
994 pr_err("ACPI needs to be enabled for this driver to work!\n");
995 return -ENODEV;
996 }
997
998 if (!force && !dmi_check_system(compal_dmi_table)) {
999 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
1000 return -ENODEV;
1001 }
1002
1003 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1004 struct backlight_properties props;
1005 memset(&props, 0, sizeof(struct backlight_properties));
1006 props.type = BACKLIGHT_PLATFORM;
1007 props.max_brightness = BACKLIGHT_LEVEL_MAX;
1008 compalbl_device = backlight_device_register(DRIVER_NAME,
1009 NULL, NULL,
1010 &compalbl_ops,
1011 &props);
1012 if (IS_ERR(compalbl_device))
1013 return PTR_ERR(compalbl_device);
1014 }
1015
1016 ret = platform_driver_register(&compal_driver);
1017 if (ret)
1018 goto err_backlight;
1019
1020 compal_device = platform_device_alloc(DRIVER_NAME, -1);
1021 if (!compal_device) {
1022 ret = -ENOMEM;
1023 goto err_platform_driver;
1024 }
1025
1026 ret = platform_device_add(compal_device); /* This calls compal_probe */
1027 if (ret)
1028 goto err_platform_device;
1029
1030 ret = setup_rfkill();
1031 if (ret)
1032 goto err_rfkill;
1033
1034 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1035 return 0;
1036
1037err_rfkill:
1038 platform_device_del(compal_device);
1039
1040err_platform_device:
1041 platform_device_put(compal_device);
1042
1043err_platform_driver:
1044 platform_driver_unregister(&compal_driver);
1045
1046err_backlight:
1047 backlight_device_unregister(compalbl_device);
1048
1049 return ret;
1050}
1051
1052static int compal_probe(struct platform_device *pdev)
1053{
1054 int err;
1055 struct compal_data *data;
1056 struct device *hwmon_dev;
1057 struct power_supply_config psy_cfg = {};
1058
1059 if (!extra_features)
1060 return 0;
1061
1062 /* Fan control */
1063 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
1064 if (!data)
1065 return -ENOMEM;
1066
1067 initialize_fan_control_data(data);
1068
1069 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
1070 if (err)
1071 return err;
1072
1073 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
1074 "compal", data,
1075 compal_hwmon_groups);
1076 if (IS_ERR(hwmon_dev)) {
1077 err = PTR_ERR(hwmon_dev);
1078 goto remove;
1079 }
1080
1081 /* Power supply */
1082 initialize_power_supply_data(data);
1083 psy_cfg.drv_data = data;
1084 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
1085 &psy_cfg);
1086 if (IS_ERR(data->psy)) {
1087 err = PTR_ERR(data->psy);
1088 goto remove;
1089 }
1090
1091 platform_set_drvdata(pdev, data);
1092
1093 return 0;
1094
1095remove:
1096 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1097 return err;
1098}
1099
1100static void __exit compal_cleanup(void)
1101{
1102 platform_device_unregister(compal_device);
1103 platform_driver_unregister(&compal_driver);
1104 backlight_device_unregister(compalbl_device);
1105 rfkill_unregister(wifi_rfkill);
1106 rfkill_unregister(bt_rfkill);
1107 rfkill_destroy(wifi_rfkill);
1108 rfkill_destroy(bt_rfkill);
1109
1110 pr_info("Driver unloaded\n");
1111}
1112
1113static int compal_remove(struct platform_device *pdev)
1114{
1115 struct compal_data *data;
1116
1117 if (!extra_features)
1118 return 0;
1119
1120 pr_info("Unloading: resetting fan control to motherboard\n");
1121 pwm_disable_control();
1122
1123 data = platform_get_drvdata(pdev);
1124 power_supply_unregister(data->psy);
1125
1126 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1127
1128 return 0;
1129}
1130
1131
1132module_init(compal_init);
1133module_exit(compal_cleanup);
1134
1135MODULE_AUTHOR("Cezary Jackiewicz");
1136MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1137MODULE_DESCRIPTION("Compal Laptop Support");
1138MODULE_VERSION(DRIVER_VERSION);
1139MODULE_LICENSE("GPL");
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/* ======= */
174struct compal_data{
175 /* Fan control */
176 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
177 unsigned char curr_pwm;
178
179 /* Power supply */
180 struct power_supply psy;
181 struct power_supply_info psy_info;
182 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
183 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
184 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
185};
186
187
188/* =============== */
189/* General globals */
190/* =============== */
191static bool force;
192module_param(force, bool, 0);
193MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
194
195/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
196 * only gets enabled on a JHL90 board. Might work with the others too */
197static bool extra_features;
198
199/* Nasty stuff. For some reason the fan control is very un-linear. I've
200 * come up with these values by looping through the possible inputs and
201 * watching the output of address 0x4F (do an ec_transaction writing 0x33
202 * into 0x4F and read a few bytes from the output, like so:
203 * u8 writeData = 0x33;
204 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
205 * That address is labeled "fan1 table information" in the service manual.
206 * It should be clear which value in 'buffer' changes). This seems to be
207 * related to fan speed. It isn't a proper 'realtime' fan speed value
208 * though, because physically stopping or speeding up the fan doesn't
209 * change it. It might be the average voltage or current of the pwm output.
210 * Nevertheless, it is more fine-grained than the actual RPM reading */
211static const unsigned char pwm_lookup_table[256] = {
212 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
213 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
214 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
215 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
216 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
217 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
218 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
219 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
220 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
221 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
222 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
223 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
224 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
225 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
226 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
227 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
228 187, 187, 193, 50
229};
230
231
232
233
234/* ========================= */
235/* Hardware access functions */
236/* ========================= */
237/* General access */
238static u8 ec_read_u8(u8 addr)
239{
240 u8 value;
241 ec_read(addr, &value);
242 return value;
243}
244
245static s8 ec_read_s8(u8 addr)
246{
247 return (s8)ec_read_u8(addr);
248}
249
250static u16 ec_read_u16(u8 addr)
251{
252 int hi, lo;
253 lo = ec_read_u8(addr);
254 hi = ec_read_u8(addr + 1);
255 return (hi << 8) + lo;
256}
257
258static s16 ec_read_s16(u8 addr)
259{
260 return (s16) ec_read_u16(addr);
261}
262
263static void ec_read_sequence(u8 addr, u8 *buf, int len)
264{
265 int i;
266 for (i = 0; i < len; i++)
267 ec_read(addr + i, buf + i);
268}
269
270
271/* Backlight access */
272static int set_backlight_level(int level)
273{
274 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
275 return -EINVAL;
276
277 ec_write(BACKLIGHT_LEVEL_ADDR, level);
278
279 return 0;
280}
281
282static int get_backlight_level(void)
283{
284 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
285}
286
287static void set_backlight_state(bool on)
288{
289 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
290 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
291}
292
293
294/* Fan control access */
295static void pwm_enable_control(void)
296{
297 unsigned char writeData = PWM_ENABLE_DATA;
298 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
299}
300
301static void pwm_disable_control(void)
302{
303 unsigned char writeData = PWM_DISABLE_DATA;
304 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
305}
306
307static void set_pwm(int pwm)
308{
309 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
310}
311
312static int get_fan_rpm(void)
313{
314 u8 value, data = FAN_DATA;
315 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
316 return 100 * (int)value;
317}
318
319
320
321
322/* =================== */
323/* Interface functions */
324/* =================== */
325
326/* Backlight interface */
327static int bl_get_brightness(struct backlight_device *b)
328{
329 return get_backlight_level();
330}
331
332static int bl_update_status(struct backlight_device *b)
333{
334 int ret = set_backlight_level(b->props.brightness);
335 if (ret)
336 return ret;
337
338 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
339 && !(b->props.state & BL_CORE_SUSPENDED)
340 && !(b->props.state & BL_CORE_FBBLANK));
341 return 0;
342}
343
344static const struct backlight_ops compalbl_ops = {
345 .get_brightness = bl_get_brightness,
346 .update_status = bl_update_status,
347};
348
349
350/* Wireless interface */
351static int compal_rfkill_set(void *data, bool blocked)
352{
353 unsigned long radio = (unsigned long) data;
354 u8 result = ec_read_u8(WIRELESS_ADDR);
355 u8 value;
356
357 if (!blocked)
358 value = (u8) (result | radio);
359 else
360 value = (u8) (result & ~radio);
361 ec_write(WIRELESS_ADDR, value);
362
363 return 0;
364}
365
366static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
367{
368 u8 result = ec_read_u8(WIRELESS_ADDR);
369 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
370 rfkill_set_hw_state(rfkill, hw_blocked);
371}
372
373static const struct rfkill_ops compal_rfkill_ops = {
374 .poll = compal_rfkill_poll,
375 .set_block = compal_rfkill_set,
376};
377
378
379/* Wake_up interface */
380#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
381static ssize_t NAME##_show(struct device *dev, \
382 struct device_attribute *attr, char *buf) \
383{ \
384 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
385} \
386static ssize_t NAME##_store(struct device *dev, \
387 struct device_attribute *attr, const char *buf, size_t count) \
388{ \
389 int state; \
390 u8 old_val = ec_read_u8(ADDR); \
391 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
392 return -EINVAL; \
393 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
394 return count; \
395}
396
397SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
398SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
399SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
400SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
401SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
402SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
403
404/* Fan control interface */
405static ssize_t pwm_enable_show(struct device *dev,
406 struct device_attribute *attr, char *buf)
407{
408 struct compal_data *data = dev_get_drvdata(dev);
409 return sprintf(buf, "%d\n", data->pwm_enable);
410}
411
412static ssize_t pwm_enable_store(struct device *dev,
413 struct device_attribute *attr, const char *buf, size_t count)
414{
415 struct compal_data *data = dev_get_drvdata(dev);
416 long val;
417 int err;
418
419 err = kstrtol(buf, 10, &val);
420 if (err)
421 return err;
422 if (val < 0)
423 return -EINVAL;
424
425 data->pwm_enable = val;
426
427 switch (val) {
428 case 0: /* Full speed */
429 pwm_enable_control();
430 set_pwm(255);
431 break;
432 case 1: /* As set by pwm1 */
433 pwm_enable_control();
434 set_pwm(data->curr_pwm);
435 break;
436 default: /* Control by motherboard */
437 pwm_disable_control();
438 break;
439 }
440
441 return count;
442}
443
444static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
445 char *buf)
446{
447 struct compal_data *data = dev_get_drvdata(dev);
448 return sprintf(buf, "%hhu\n", data->curr_pwm);
449}
450
451static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
452 const char *buf, size_t count)
453{
454 struct compal_data *data = dev_get_drvdata(dev);
455 long val;
456 int err;
457
458 err = kstrtol(buf, 10, &val);
459 if (err)
460 return err;
461 if (val < 0 || val > 255)
462 return -EINVAL;
463
464 data->curr_pwm = val;
465
466 if (data->pwm_enable != 1)
467 return count;
468 set_pwm(val);
469
470 return count;
471}
472
473static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
474 char *buf)
475{
476 return sprintf(buf, "%d\n", get_fan_rpm());
477}
478
479
480/* Temperature interface */
481#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
482static ssize_t temp_##POSTFIX(struct device *dev, \
483 struct device_attribute *attr, char *buf) \
484{ \
485 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
486} \
487static ssize_t label_##POSTFIX(struct device *dev, \
488 struct device_attribute *attr, char *buf) \
489{ \
490 return sprintf(buf, "%s\n", LABEL); \
491}
492
493/* Labels as in service guide */
494TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
495TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
496TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
497TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
498TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
499TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
500
501
502/* Power supply interface */
503static int bat_status(void)
504{
505 u8 status0 = ec_read_u8(BAT_STATUS0);
506 u8 status1 = ec_read_u8(BAT_STATUS1);
507
508 if (status0 & BAT_S0_CHARGING)
509 return POWER_SUPPLY_STATUS_CHARGING;
510 if (status0 & BAT_S0_DISCHARGE)
511 return POWER_SUPPLY_STATUS_DISCHARGING;
512 if (status1 & BAT_S1_FULL)
513 return POWER_SUPPLY_STATUS_FULL;
514 return POWER_SUPPLY_STATUS_NOT_CHARGING;
515}
516
517static int bat_health(void)
518{
519 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
520
521 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
522 return POWER_SUPPLY_HEALTH_OVERHEAT;
523 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
524 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
525 if (status & BAT_STOP_CHRG1_BAD_CELL)
526 return POWER_SUPPLY_HEALTH_DEAD;
527 if (status & BAT_STOP_CHRG1_COMM_FAIL)
528 return POWER_SUPPLY_HEALTH_UNKNOWN;
529 return POWER_SUPPLY_HEALTH_GOOD;
530}
531
532static int bat_is_present(void)
533{
534 u8 status = ec_read_u8(BAT_STATUS2);
535 return ((status & BAT_S1_EXISTS) != 0);
536}
537
538static int bat_technology(void)
539{
540 u8 status = ec_read_u8(BAT_STATUS1);
541
542 if (status & BAT_S1_LiION_OR_NiMH)
543 return POWER_SUPPLY_TECHNOLOGY_LION;
544 return POWER_SUPPLY_TECHNOLOGY_NiMH;
545}
546
547static int bat_capacity_level(void)
548{
549 u8 status0 = ec_read_u8(BAT_STATUS0);
550 u8 status1 = ec_read_u8(BAT_STATUS1);
551 u8 status2 = ec_read_u8(BAT_STATUS2);
552
553 if (status0 & BAT_S0_DISCHRG_CRITICAL
554 || status1 & BAT_S1_EMPTY
555 || status2 & BAT_S2_LOW_LOW)
556 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
557 if (status0 & BAT_S0_LOW)
558 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
559 if (status1 & BAT_S1_FULL)
560 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
561 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
562}
563
564static int bat_get_property(struct power_supply *psy,
565 enum power_supply_property psp,
566 union power_supply_propval *val)
567{
568 struct compal_data *data;
569 data = container_of(psy, struct compal_data, psy);
570
571 switch (psp) {
572 case POWER_SUPPLY_PROP_STATUS:
573 val->intval = bat_status();
574 break;
575 case POWER_SUPPLY_PROP_HEALTH:
576 val->intval = bat_health();
577 break;
578 case POWER_SUPPLY_PROP_PRESENT:
579 val->intval = bat_is_present();
580 break;
581 case POWER_SUPPLY_PROP_TECHNOLOGY:
582 val->intval = bat_technology();
583 break;
584 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
585 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
586 break;
587 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
588 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
589 break;
590 case POWER_SUPPLY_PROP_CURRENT_NOW:
591 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
592 break;
593 case POWER_SUPPLY_PROP_CURRENT_AVG:
594 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
595 break;
596 case POWER_SUPPLY_PROP_POWER_NOW:
597 val->intval = ec_read_u8(BAT_POWER) * 1000000;
598 break;
599 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
600 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
601 break;
602 case POWER_SUPPLY_PROP_CHARGE_NOW:
603 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
604 break;
605 case POWER_SUPPLY_PROP_CAPACITY:
606 val->intval = ec_read_u8(BAT_CAPACITY);
607 break;
608 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
609 val->intval = bat_capacity_level();
610 break;
611 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
612 * the number of degrees, whereas BAT_TEMP is somewhat more
613 * complicated. It looks like this is a negative nember with a
614 * 100/256 divider and an offset of 222. Both were determined
615 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
616 case POWER_SUPPLY_PROP_TEMP:
617 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
618 break;
619 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
620 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
621 break;
622 /* Neither the model name nor manufacturer name work for me. */
623 case POWER_SUPPLY_PROP_MODEL_NAME:
624 val->strval = data->bat_model_name;
625 break;
626 case POWER_SUPPLY_PROP_MANUFACTURER:
627 val->strval = data->bat_manufacturer_name;
628 break;
629 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
630 val->strval = data->bat_serial_number;
631 break;
632 default:
633 break;
634 }
635 return 0;
636}
637
638
639
640
641
642/* ============== */
643/* Driver Globals */
644/* ============== */
645static DEVICE_ATTR(wake_up_pme,
646 0644, wake_up_pme_show, wake_up_pme_store);
647static DEVICE_ATTR(wake_up_modem,
648 0644, wake_up_modem_show, wake_up_modem_store);
649static DEVICE_ATTR(wake_up_lan,
650 0644, wake_up_lan_show, wake_up_lan_store);
651static DEVICE_ATTR(wake_up_wlan,
652 0644, wake_up_wlan_show, wake_up_wlan_store);
653static DEVICE_ATTR(wake_up_key,
654 0644, wake_up_key_show, wake_up_key_store);
655static DEVICE_ATTR(wake_up_mouse,
656 0644, wake_up_mouse_show, wake_up_mouse_store);
657
658static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
659static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
660static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
661static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
662static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
663static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
664static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
665static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
666static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
667static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
668static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
669static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
670static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
671static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
672static DEVICE_ATTR(pwm1_enable,
673 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
674
675static struct attribute *compal_platform_attrs[] = {
676 &dev_attr_wake_up_pme.attr,
677 &dev_attr_wake_up_modem.attr,
678 &dev_attr_wake_up_lan.attr,
679 &dev_attr_wake_up_wlan.attr,
680 &dev_attr_wake_up_key.attr,
681 &dev_attr_wake_up_mouse.attr,
682 NULL
683};
684static struct attribute_group compal_platform_attr_group = {
685 .attrs = compal_platform_attrs
686};
687
688static struct attribute *compal_hwmon_attrs[] = {
689 &dev_attr_pwm1_enable.attr,
690 &dev_attr_pwm1.attr,
691 &dev_attr_fan1_input.attr,
692 &dev_attr_temp1_input.attr,
693 &dev_attr_temp2_input.attr,
694 &dev_attr_temp3_input.attr,
695 &dev_attr_temp4_input.attr,
696 &dev_attr_temp5_input.attr,
697 &dev_attr_temp6_input.attr,
698 &dev_attr_temp1_label.attr,
699 &dev_attr_temp2_label.attr,
700 &dev_attr_temp3_label.attr,
701 &dev_attr_temp4_label.attr,
702 &dev_attr_temp5_label.attr,
703 &dev_attr_temp6_label.attr,
704 NULL
705};
706ATTRIBUTE_GROUPS(compal_hwmon);
707
708static int compal_probe(struct platform_device *);
709static int compal_remove(struct platform_device *);
710static struct platform_driver compal_driver = {
711 .driver = {
712 .name = DRIVER_NAME,
713 .owner = THIS_MODULE,
714 },
715 .probe = compal_probe,
716 .remove = compal_remove,
717};
718
719static enum power_supply_property compal_bat_properties[] = {
720 POWER_SUPPLY_PROP_STATUS,
721 POWER_SUPPLY_PROP_HEALTH,
722 POWER_SUPPLY_PROP_PRESENT,
723 POWER_SUPPLY_PROP_TECHNOLOGY,
724 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
725 POWER_SUPPLY_PROP_VOLTAGE_NOW,
726 POWER_SUPPLY_PROP_CURRENT_NOW,
727 POWER_SUPPLY_PROP_CURRENT_AVG,
728 POWER_SUPPLY_PROP_POWER_NOW,
729 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
730 POWER_SUPPLY_PROP_CHARGE_NOW,
731 POWER_SUPPLY_PROP_CAPACITY,
732 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
733 POWER_SUPPLY_PROP_TEMP,
734 POWER_SUPPLY_PROP_TEMP_AMBIENT,
735 POWER_SUPPLY_PROP_MODEL_NAME,
736 POWER_SUPPLY_PROP_MANUFACTURER,
737 POWER_SUPPLY_PROP_SERIAL_NUMBER,
738};
739
740static struct backlight_device *compalbl_device;
741
742static struct platform_device *compal_device;
743
744static struct rfkill *wifi_rfkill;
745static struct rfkill *bt_rfkill;
746
747
748
749
750
751/* =================================== */
752/* Initialization & clean-up functions */
753/* =================================== */
754
755static int dmi_check_cb(const struct dmi_system_id *id)
756{
757 pr_info("Identified laptop model '%s'\n", id->ident);
758 extra_features = false;
759 return 1;
760}
761
762static int dmi_check_cb_extra(const struct dmi_system_id *id)
763{
764 pr_info("Identified laptop model '%s', enabling extra features\n",
765 id->ident);
766 extra_features = true;
767 return 1;
768}
769
770static struct dmi_system_id __initdata compal_dmi_table[] = {
771 {
772 .ident = "FL90/IFL90",
773 .matches = {
774 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
775 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
776 },
777 .callback = dmi_check_cb
778 },
779 {
780 .ident = "FL90/IFL90",
781 .matches = {
782 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
783 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
784 },
785 .callback = dmi_check_cb
786 },
787 {
788 .ident = "FL91/IFL91",
789 .matches = {
790 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
791 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
792 },
793 .callback = dmi_check_cb
794 },
795 {
796 .ident = "FL92/JFL92",
797 .matches = {
798 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
799 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
800 },
801 .callback = dmi_check_cb
802 },
803 {
804 .ident = "FT00/IFT00",
805 .matches = {
806 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808 },
809 .callback = dmi_check_cb
810 },
811 {
812 .ident = "Dell Mini 9",
813 .matches = {
814 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
815 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
816 },
817 .callback = dmi_check_cb
818 },
819 {
820 .ident = "Dell Mini 10",
821 .matches = {
822 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
823 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
824 },
825 .callback = dmi_check_cb
826 },
827 {
828 .ident = "Dell Mini 10v",
829 .matches = {
830 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
831 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
832 },
833 .callback = dmi_check_cb
834 },
835 {
836 .ident = "Dell Mini 1012",
837 .matches = {
838 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
839 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
840 },
841 .callback = dmi_check_cb
842 },
843 {
844 .ident = "Dell Inspiron 11z",
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
848 },
849 .callback = dmi_check_cb
850 },
851 {
852 .ident = "Dell Mini 12",
853 .matches = {
854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
856 },
857 .callback = dmi_check_cb
858 },
859 {
860 .ident = "JHL90",
861 .matches = {
862 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
863 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
864 },
865 .callback = dmi_check_cb_extra
866 },
867 {
868 .ident = "KHLB2",
869 .matches = {
870 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
871 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
872 },
873 .callback = dmi_check_cb_extra
874 },
875 { }
876};
877MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
878
879static void initialize_power_supply_data(struct compal_data *data)
880{
881 data->psy.name = DRIVER_NAME;
882 data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
883 data->psy.properties = compal_bat_properties;
884 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties);
885 data->psy.get_property = bat_get_property;
886
887 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
888 data->bat_manufacturer_name,
889 BAT_MANUFACTURER_NAME_LEN);
890 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
891
892 ec_read_sequence(BAT_MODEL_NAME_ADDR,
893 data->bat_model_name,
894 BAT_MODEL_NAME_LEN);
895 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
896
897 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
898 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
899}
900
901static void initialize_fan_control_data(struct compal_data *data)
902{
903 data->pwm_enable = 2; /* Keep motherboard in control for now */
904 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
905 if we take over... */
906}
907
908static int setup_rfkill(void)
909{
910 int ret;
911
912 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
913 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
914 (void *) WIRELESS_WLAN);
915 if (!wifi_rfkill)
916 return -ENOMEM;
917
918 ret = rfkill_register(wifi_rfkill);
919 if (ret)
920 goto err_wifi;
921
922 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
923 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
924 (void *) WIRELESS_BT);
925 if (!bt_rfkill) {
926 ret = -ENOMEM;
927 goto err_allocate_bt;
928 }
929 ret = rfkill_register(bt_rfkill);
930 if (ret)
931 goto err_register_bt;
932
933 return 0;
934
935err_register_bt:
936 rfkill_destroy(bt_rfkill);
937
938err_allocate_bt:
939 rfkill_unregister(wifi_rfkill);
940
941err_wifi:
942 rfkill_destroy(wifi_rfkill);
943
944 return ret;
945}
946
947static int __init compal_init(void)
948{
949 int ret;
950
951 if (acpi_disabled) {
952 pr_err("ACPI needs to be enabled for this driver to work!\n");
953 return -ENODEV;
954 }
955
956 if (!force && !dmi_check_system(compal_dmi_table)) {
957 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
958 return -ENODEV;
959 }
960
961 if (!acpi_video_backlight_support()) {
962 struct backlight_properties props;
963 memset(&props, 0, sizeof(struct backlight_properties));
964 props.type = BACKLIGHT_PLATFORM;
965 props.max_brightness = BACKLIGHT_LEVEL_MAX;
966 compalbl_device = backlight_device_register(DRIVER_NAME,
967 NULL, NULL,
968 &compalbl_ops,
969 &props);
970 if (IS_ERR(compalbl_device))
971 return PTR_ERR(compalbl_device);
972 }
973
974 ret = platform_driver_register(&compal_driver);
975 if (ret)
976 goto err_backlight;
977
978 compal_device = platform_device_alloc(DRIVER_NAME, -1);
979 if (!compal_device) {
980 ret = -ENOMEM;
981 goto err_platform_driver;
982 }
983
984 ret = platform_device_add(compal_device); /* This calls compal_probe */
985 if (ret)
986 goto err_platform_device;
987
988 ret = setup_rfkill();
989 if (ret)
990 goto err_rfkill;
991
992 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
993 return 0;
994
995err_rfkill:
996 platform_device_del(compal_device);
997
998err_platform_device:
999 platform_device_put(compal_device);
1000
1001err_platform_driver:
1002 platform_driver_unregister(&compal_driver);
1003
1004err_backlight:
1005 backlight_device_unregister(compalbl_device);
1006
1007 return ret;
1008}
1009
1010static int compal_probe(struct platform_device *pdev)
1011{
1012 int err;
1013 struct compal_data *data;
1014 struct device *hwmon_dev;
1015
1016 if (!extra_features)
1017 return 0;
1018
1019 /* Fan control */
1020 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
1021 if (!data)
1022 return -ENOMEM;
1023
1024 initialize_fan_control_data(data);
1025
1026 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
1027 if (err)
1028 return err;
1029
1030 hwmon_dev = hwmon_device_register_with_groups(&pdev->dev,
1031 DRIVER_NAME, data,
1032 compal_hwmon_groups);
1033 if (IS_ERR(hwmon_dev)) {
1034 err = PTR_ERR(hwmon_dev);
1035 goto remove;
1036 }
1037
1038 /* Power supply */
1039 initialize_power_supply_data(data);
1040 power_supply_register(&compal_device->dev, &data->psy);
1041
1042 platform_set_drvdata(pdev, data);
1043
1044 return 0;
1045
1046remove:
1047 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1048 return err;
1049}
1050
1051static void __exit compal_cleanup(void)
1052{
1053 platform_device_unregister(compal_device);
1054 platform_driver_unregister(&compal_driver);
1055 backlight_device_unregister(compalbl_device);
1056 rfkill_unregister(wifi_rfkill);
1057 rfkill_unregister(bt_rfkill);
1058 rfkill_destroy(wifi_rfkill);
1059 rfkill_destroy(bt_rfkill);
1060
1061 pr_info("Driver unloaded\n");
1062}
1063
1064static int compal_remove(struct platform_device *pdev)
1065{
1066 struct compal_data *data;
1067
1068 if (!extra_features)
1069 return 0;
1070
1071 pr_info("Unloading: resetting fan control to motherboard\n");
1072 pwm_disable_control();
1073
1074 data = platform_get_drvdata(pdev);
1075 power_supply_unregister(&data->psy);
1076
1077 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1078
1079 return 0;
1080}
1081
1082
1083module_init(compal_init);
1084module_exit(compal_cleanup);
1085
1086MODULE_AUTHOR("Cezary Jackiewicz");
1087MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1088MODULE_DESCRIPTION("Compal Laptop Support");
1089MODULE_VERSION(DRIVER_VERSION);
1090MODULE_LICENSE("GPL");