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// SPDX-License-Identifier: GPL-2.0-or-later
2/*-*-linux-c-*-*/
3
4/*
5 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
6
7 based on MSI driver
8
9 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
10
11 */
12
13/*
14 * compal-laptop.c - Compal laptop support.
15 *
16 * This driver exports a few files in /sys/devices/platform/compal-laptop/:
17 * wake_up_XXX Whether or not we listen to such wake up events (rw)
18 *
19 * In addition to these platform device attributes the driver
20 * registers itself in the Linux backlight control, power_supply, rfkill
21 * and hwmon subsystem and is available to userspace under:
22 *
23 * /sys/class/backlight/compal-laptop/
24 * /sys/class/power_supply/compal-laptop/
25 * /sys/class/rfkill/rfkillX/
26 * /sys/class/hwmon/hwmonX/
27 *
28 * Notes on the power_supply battery interface:
29 * - the "minimum" design voltage is *the* design voltage
30 * - the ambient temperature is the average battery temperature
31 * and the value is an educated guess (see commented code below)
32 *
33 *
34 * This driver might work on other laptops produced by Compal. If you
35 * want to try it you can pass force=1 as argument to the module which
36 * will force it to load even when the DMI data doesn't identify the
37 * laptop as compatible.
38 *
39 * Lots of data available at:
40 * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/
41 * JHL90%20service%20manual-Final-0725.pdf
42 *
43 *
44 *
45 * Support for the Compal JHL90 added by Roald Frederickx
46 * (roald.frederickx@gmail.com):
47 * Driver got large revision. Added functionalities: backlight
48 * power, wake_on_XXX, a hwmon and power_supply interface.
49 *
50 * In case this gets merged into the kernel source: I want to dedicate this
51 * to Kasper Meerts, the awesome guy who showed me Linux and C!
52 */
53
54/* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
55 * only enabled on a JHL90 board until it is verified that they work on the
56 * other boards too. See the extra_features variable. */
57
58#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
59
60#include <linux/module.h>
61#include <linux/kernel.h>
62#include <linux/init.h>
63#include <linux/acpi.h>
64#include <linux/dmi.h>
65#include <linux/backlight.h>
66#include <linux/platform_device.h>
67#include <linux/rfkill.h>
68#include <linux/hwmon.h>
69#include <linux/hwmon-sysfs.h>
70#include <linux/power_supply.h>
71#include <linux/sysfs.h>
72#include <linux/fb.h>
73#include <acpi/video.h>
74
75/* ======= */
76/* Defines */
77/* ======= */
78#define DRIVER_NAME "compal-laptop"
79#define DRIVER_VERSION "0.2.7"
80
81#define BACKLIGHT_LEVEL_ADDR 0xB9
82#define BACKLIGHT_LEVEL_MAX 7
83#define BACKLIGHT_STATE_ADDR 0x59
84#define BACKLIGHT_STATE_ON_DATA 0xE1
85#define BACKLIGHT_STATE_OFF_DATA 0xE2
86
87#define WAKE_UP_ADDR 0xA4
88#define WAKE_UP_PME (1 << 0)
89#define WAKE_UP_MODEM (1 << 1)
90#define WAKE_UP_LAN (1 << 2)
91#define WAKE_UP_WLAN (1 << 4)
92#define WAKE_UP_KEY (1 << 6)
93#define WAKE_UP_MOUSE (1 << 7)
94
95#define WIRELESS_ADDR 0xBB
96#define WIRELESS_WLAN (1 << 0)
97#define WIRELESS_BT (1 << 1)
98#define WIRELESS_WLAN_EXISTS (1 << 2)
99#define WIRELESS_BT_EXISTS (1 << 3)
100#define WIRELESS_KILLSWITCH (1 << 4)
101
102#define PWM_ADDRESS 0x46
103#define PWM_DISABLE_ADDR 0x59
104#define PWM_DISABLE_DATA 0xA5
105#define PWM_ENABLE_ADDR 0x59
106#define PWM_ENABLE_DATA 0xA8
107
108#define FAN_ADDRESS 0x46
109#define FAN_DATA 0x81
110#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
111#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
112#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
113
114#define TEMP_CPU 0xB0
115#define TEMP_CPU_LOCAL 0xB1
116#define TEMP_CPU_DTS 0xB5
117#define TEMP_NORTHBRIDGE 0xB6
118#define TEMP_VGA 0xB4
119#define TEMP_SKIN 0xB2
120
121#define BAT_MANUFACTURER_NAME_ADDR 0x10
122#define BAT_MANUFACTURER_NAME_LEN 9
123#define BAT_MODEL_NAME_ADDR 0x19
124#define BAT_MODEL_NAME_LEN 6
125#define BAT_SERIAL_NUMBER_ADDR 0xC4
126#define BAT_SERIAL_NUMBER_LEN 5
127#define BAT_CHARGE_NOW 0xC2
128#define BAT_CHARGE_DESIGN 0xCA
129#define BAT_VOLTAGE_NOW 0xC6
130#define BAT_VOLTAGE_DESIGN 0xC8
131#define BAT_CURRENT_NOW 0xD0
132#define BAT_CURRENT_AVG 0xD2
133#define BAT_POWER 0xD4
134#define BAT_CAPACITY 0xCE
135#define BAT_TEMP 0xD6
136#define BAT_TEMP_AVG 0xD7
137#define BAT_STATUS0 0xC1
138#define BAT_STATUS1 0xF0
139#define BAT_STATUS2 0xF1
140#define BAT_STOP_CHARGE1 0xF2
141#define BAT_STOP_CHARGE2 0xF3
142#define BAT_CHARGE_LIMIT 0x03
143#define BAT_CHARGE_LIMIT_MAX 100
144
145#define BAT_S0_DISCHARGE (1 << 0)
146#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
147#define BAT_S0_LOW (1 << 3)
148#define BAT_S0_CHARGING (1 << 1)
149#define BAT_S0_AC (1 << 7)
150#define BAT_S1_EXISTS (1 << 0)
151#define BAT_S1_FULL (1 << 1)
152#define BAT_S1_EMPTY (1 << 2)
153#define BAT_S1_LiION_OR_NiMH (1 << 7)
154#define BAT_S2_LOW_LOW (1 << 0)
155#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
156#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
157#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
158#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
159
160
161/* ======= */
162/* Structs */
163/* ======= */
164struct compal_data{
165 /* Fan control */
166 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
167 unsigned char curr_pwm;
168
169 /* Power supply */
170 struct power_supply *psy;
171 struct power_supply_info psy_info;
172 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
173 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
174 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
175};
176
177
178/* =============== */
179/* General globals */
180/* =============== */
181static bool force;
182module_param(force, bool, 0);
183MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
184
185/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
186 * only gets enabled on a JHL90 board. Might work with the others too */
187static bool extra_features;
188
189/* Nasty stuff. For some reason the fan control is very un-linear. I've
190 * come up with these values by looping through the possible inputs and
191 * watching the output of address 0x4F (do an ec_transaction writing 0x33
192 * into 0x4F and read a few bytes from the output, like so:
193 * u8 writeData = 0x33;
194 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
195 * That address is labeled "fan1 table information" in the service manual.
196 * It should be clear which value in 'buffer' changes). This seems to be
197 * related to fan speed. It isn't a proper 'realtime' fan speed value
198 * though, because physically stopping or speeding up the fan doesn't
199 * change it. It might be the average voltage or current of the pwm output.
200 * Nevertheless, it is more fine-grained than the actual RPM reading */
201static const unsigned char pwm_lookup_table[256] = {
202 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
203 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
204 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
205 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
206 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
207 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
208 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
209 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
210 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
211 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
212 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
213 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
214 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
215 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
216 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
217 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
218 187, 187, 193, 50
219};
220
221
222
223
224/* ========================= */
225/* Hardware access functions */
226/* ========================= */
227/* General access */
228static u8 ec_read_u8(u8 addr)
229{
230 u8 value = 0;
231 ec_read(addr, &value);
232 return value;
233}
234
235static s8 ec_read_s8(u8 addr)
236{
237 return (s8)ec_read_u8(addr);
238}
239
240static u16 ec_read_u16(u8 addr)
241{
242 int hi, lo;
243 lo = ec_read_u8(addr);
244 hi = ec_read_u8(addr + 1);
245 return (hi << 8) + lo;
246}
247
248static s16 ec_read_s16(u8 addr)
249{
250 return (s16) ec_read_u16(addr);
251}
252
253static void ec_read_sequence(u8 addr, u8 *buf, int len)
254{
255 int i;
256 for (i = 0; i < len; i++)
257 ec_read(addr + i, buf + i);
258}
259
260
261/* Backlight access */
262static int set_backlight_level(int level)
263{
264 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
265 return -EINVAL;
266
267 ec_write(BACKLIGHT_LEVEL_ADDR, level);
268
269 return 0;
270}
271
272static int get_backlight_level(void)
273{
274 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
275}
276
277static void set_backlight_state(bool on)
278{
279 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
280 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
281}
282
283
284/* Fan control access */
285static void pwm_enable_control(void)
286{
287 unsigned char writeData = PWM_ENABLE_DATA;
288 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
289}
290
291static void pwm_disable_control(void)
292{
293 unsigned char writeData = PWM_DISABLE_DATA;
294 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
295}
296
297static void set_pwm(int pwm)
298{
299 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
300}
301
302static int get_fan_rpm(void)
303{
304 u8 value, data = FAN_DATA;
305 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
306 return 100 * (int)value;
307}
308
309
310
311
312/* =================== */
313/* Interface functions */
314/* =================== */
315
316/* Backlight interface */
317static int bl_get_brightness(struct backlight_device *b)
318{
319 return get_backlight_level();
320}
321
322static int bl_update_status(struct backlight_device *b)
323{
324 int ret = set_backlight_level(b->props.brightness);
325 if (ret)
326 return ret;
327
328 set_backlight_state(!backlight_is_blank(b));
329 return 0;
330}
331
332static const struct backlight_ops compalbl_ops = {
333 .get_brightness = bl_get_brightness,
334 .update_status = bl_update_status,
335};
336
337
338/* Wireless interface */
339static int compal_rfkill_set(void *data, bool blocked)
340{
341 unsigned long radio = (unsigned long) data;
342 u8 result = ec_read_u8(WIRELESS_ADDR);
343 u8 value;
344
345 if (!blocked)
346 value = (u8) (result | radio);
347 else
348 value = (u8) (result & ~radio);
349 ec_write(WIRELESS_ADDR, value);
350
351 return 0;
352}
353
354static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
355{
356 u8 result = ec_read_u8(WIRELESS_ADDR);
357 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
358 rfkill_set_hw_state(rfkill, hw_blocked);
359}
360
361static const struct rfkill_ops compal_rfkill_ops = {
362 .poll = compal_rfkill_poll,
363 .set_block = compal_rfkill_set,
364};
365
366
367/* Wake_up interface */
368#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
369static ssize_t NAME##_show(struct device *dev, \
370 struct device_attribute *attr, char *buf) \
371{ \
372 return sysfs_emit(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
373} \
374static ssize_t NAME##_store(struct device *dev, \
375 struct device_attribute *attr, const char *buf, size_t count) \
376{ \
377 int state; \
378 u8 old_val = ec_read_u8(ADDR); \
379 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
380 return -EINVAL; \
381 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
382 return count; \
383}
384
385SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
386SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
387SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
388SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
389SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
390SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
391
392/* Fan control interface */
393static ssize_t pwm_enable_show(struct device *dev,
394 struct device_attribute *attr, char *buf)
395{
396 struct compal_data *data = dev_get_drvdata(dev);
397 return sysfs_emit(buf, "%d\n", data->pwm_enable);
398}
399
400static ssize_t pwm_enable_store(struct device *dev,
401 struct device_attribute *attr, const char *buf, size_t count)
402{
403 struct compal_data *data = dev_get_drvdata(dev);
404 long val;
405 int err;
406
407 err = kstrtol(buf, 10, &val);
408 if (err)
409 return err;
410 if (val < 0)
411 return -EINVAL;
412
413 data->pwm_enable = val;
414
415 switch (val) {
416 case 0: /* Full speed */
417 pwm_enable_control();
418 set_pwm(255);
419 break;
420 case 1: /* As set by pwm1 */
421 pwm_enable_control();
422 set_pwm(data->curr_pwm);
423 break;
424 default: /* Control by motherboard */
425 pwm_disable_control();
426 break;
427 }
428
429 return count;
430}
431
432static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
433 char *buf)
434{
435 struct compal_data *data = dev_get_drvdata(dev);
436 return sysfs_emit(buf, "%hhu\n", data->curr_pwm);
437}
438
439static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
440 const char *buf, size_t count)
441{
442 struct compal_data *data = dev_get_drvdata(dev);
443 long val;
444 int err;
445
446 err = kstrtol(buf, 10, &val);
447 if (err)
448 return err;
449 if (val < 0 || val > 255)
450 return -EINVAL;
451
452 data->curr_pwm = val;
453
454 if (data->pwm_enable != 1)
455 return count;
456 set_pwm(val);
457
458 return count;
459}
460
461static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
462 char *buf)
463{
464 return sysfs_emit(buf, "%d\n", get_fan_rpm());
465}
466
467
468/* Temperature interface */
469#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
470static ssize_t temp_##POSTFIX(struct device *dev, \
471 struct device_attribute *attr, char *buf) \
472{ \
473 return sysfs_emit(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
474} \
475static ssize_t label_##POSTFIX(struct device *dev, \
476 struct device_attribute *attr, char *buf) \
477{ \
478 return sysfs_emit(buf, "%s\n", LABEL); \
479}
480
481/* Labels as in service guide */
482TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
483TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
484TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
485TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
486TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
487TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
488
489
490/* Power supply interface */
491static int bat_status(void)
492{
493 u8 status0 = ec_read_u8(BAT_STATUS0);
494 u8 status1 = ec_read_u8(BAT_STATUS1);
495
496 if (status0 & BAT_S0_CHARGING)
497 return POWER_SUPPLY_STATUS_CHARGING;
498 if (status0 & BAT_S0_DISCHARGE)
499 return POWER_SUPPLY_STATUS_DISCHARGING;
500 if (status1 & BAT_S1_FULL)
501 return POWER_SUPPLY_STATUS_FULL;
502 return POWER_SUPPLY_STATUS_NOT_CHARGING;
503}
504
505static int bat_health(void)
506{
507 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
508
509 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
510 return POWER_SUPPLY_HEALTH_OVERHEAT;
511 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
512 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
513 if (status & BAT_STOP_CHRG1_BAD_CELL)
514 return POWER_SUPPLY_HEALTH_DEAD;
515 if (status & BAT_STOP_CHRG1_COMM_FAIL)
516 return POWER_SUPPLY_HEALTH_UNKNOWN;
517 return POWER_SUPPLY_HEALTH_GOOD;
518}
519
520static int bat_is_present(void)
521{
522 u8 status = ec_read_u8(BAT_STATUS2);
523 return ((status & BAT_S1_EXISTS) != 0);
524}
525
526static int bat_technology(void)
527{
528 u8 status = ec_read_u8(BAT_STATUS1);
529
530 if (status & BAT_S1_LiION_OR_NiMH)
531 return POWER_SUPPLY_TECHNOLOGY_LION;
532 return POWER_SUPPLY_TECHNOLOGY_NiMH;
533}
534
535static int bat_capacity_level(void)
536{
537 u8 status0 = ec_read_u8(BAT_STATUS0);
538 u8 status1 = ec_read_u8(BAT_STATUS1);
539 u8 status2 = ec_read_u8(BAT_STATUS2);
540
541 if (status0 & BAT_S0_DISCHRG_CRITICAL
542 || status1 & BAT_S1_EMPTY
543 || status2 & BAT_S2_LOW_LOW)
544 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
545 if (status0 & BAT_S0_LOW)
546 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
547 if (status1 & BAT_S1_FULL)
548 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
549 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
550}
551
552static int bat_get_property(struct power_supply *psy,
553 enum power_supply_property psp,
554 union power_supply_propval *val)
555{
556 struct compal_data *data = power_supply_get_drvdata(psy);
557
558 switch (psp) {
559 case POWER_SUPPLY_PROP_STATUS:
560 val->intval = bat_status();
561 break;
562 case POWER_SUPPLY_PROP_HEALTH:
563 val->intval = bat_health();
564 break;
565 case POWER_SUPPLY_PROP_PRESENT:
566 val->intval = bat_is_present();
567 break;
568 case POWER_SUPPLY_PROP_TECHNOLOGY:
569 val->intval = bat_technology();
570 break;
571 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
572 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
573 break;
574 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
575 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
576 break;
577 case POWER_SUPPLY_PROP_CURRENT_NOW:
578 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
579 break;
580 case POWER_SUPPLY_PROP_CURRENT_AVG:
581 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
582 break;
583 case POWER_SUPPLY_PROP_POWER_NOW:
584 val->intval = ec_read_u8(BAT_POWER) * 1000000;
585 break;
586 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
587 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
588 break;
589 case POWER_SUPPLY_PROP_CHARGE_NOW:
590 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
591 break;
592 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
593 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
594 break;
595 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
596 val->intval = BAT_CHARGE_LIMIT_MAX;
597 break;
598 case POWER_SUPPLY_PROP_CAPACITY:
599 val->intval = ec_read_u8(BAT_CAPACITY);
600 break;
601 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
602 val->intval = bat_capacity_level();
603 break;
604 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
605 * the number of degrees, whereas BAT_TEMP is somewhat more
606 * complicated. It looks like this is a negative nember with a
607 * 100/256 divider and an offset of 222. Both were determined
608 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
609 case POWER_SUPPLY_PROP_TEMP:
610 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
611 break;
612 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
613 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
614 break;
615 /* Neither the model name nor manufacturer name work for me. */
616 case POWER_SUPPLY_PROP_MODEL_NAME:
617 val->strval = data->bat_model_name;
618 break;
619 case POWER_SUPPLY_PROP_MANUFACTURER:
620 val->strval = data->bat_manufacturer_name;
621 break;
622 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
623 val->strval = data->bat_serial_number;
624 break;
625 default:
626 break;
627 }
628 return 0;
629}
630
631static int bat_set_property(struct power_supply *psy,
632 enum power_supply_property psp,
633 const union power_supply_propval *val)
634{
635 int level;
636
637 switch (psp) {
638 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
639 level = val->intval;
640 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
641 return -EINVAL;
642 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
643 return -EIO;
644 break;
645 default:
646 break;
647 }
648 return 0;
649}
650
651static int bat_writeable_property(struct power_supply *psy,
652 enum power_supply_property psp)
653{
654 switch (psp) {
655 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
656 return 1;
657 default:
658 return 0;
659 }
660}
661
662
663
664
665/* ============== */
666/* Driver Globals */
667/* ============== */
668static DEVICE_ATTR_RW(wake_up_pme);
669static DEVICE_ATTR_RW(wake_up_modem);
670static DEVICE_ATTR_RW(wake_up_lan);
671static DEVICE_ATTR_RW(wake_up_wlan);
672static DEVICE_ATTR_RW(wake_up_key);
673static DEVICE_ATTR_RW(wake_up_mouse);
674
675static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
676static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
677static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
678static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
679static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
680static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
681static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
682static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
683static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
684static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
685static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
686static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
687static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
688static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
689static DEVICE_ATTR(pwm1_enable,
690 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
691
692static struct attribute *compal_platform_attrs[] = {
693 &dev_attr_wake_up_pme.attr,
694 &dev_attr_wake_up_modem.attr,
695 &dev_attr_wake_up_lan.attr,
696 &dev_attr_wake_up_wlan.attr,
697 &dev_attr_wake_up_key.attr,
698 &dev_attr_wake_up_mouse.attr,
699 NULL
700};
701static const struct attribute_group compal_platform_attr_group = {
702 .attrs = compal_platform_attrs
703};
704
705static struct attribute *compal_hwmon_attrs[] = {
706 &dev_attr_pwm1_enable.attr,
707 &dev_attr_pwm1.attr,
708 &dev_attr_fan1_input.attr,
709 &dev_attr_temp1_input.attr,
710 &dev_attr_temp2_input.attr,
711 &dev_attr_temp3_input.attr,
712 &dev_attr_temp4_input.attr,
713 &dev_attr_temp5_input.attr,
714 &dev_attr_temp6_input.attr,
715 &dev_attr_temp1_label.attr,
716 &dev_attr_temp2_label.attr,
717 &dev_attr_temp3_label.attr,
718 &dev_attr_temp4_label.attr,
719 &dev_attr_temp5_label.attr,
720 &dev_attr_temp6_label.attr,
721 NULL
722};
723ATTRIBUTE_GROUPS(compal_hwmon);
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_CHARGE_CONTROL_LIMIT,
738 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
739 POWER_SUPPLY_PROP_CAPACITY,
740 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
741 POWER_SUPPLY_PROP_TEMP,
742 POWER_SUPPLY_PROP_TEMP_AMBIENT,
743 POWER_SUPPLY_PROP_MODEL_NAME,
744 POWER_SUPPLY_PROP_MANUFACTURER,
745 POWER_SUPPLY_PROP_SERIAL_NUMBER,
746};
747
748static struct backlight_device *compalbl_device;
749
750static struct platform_device *compal_device;
751
752static struct rfkill *wifi_rfkill;
753static struct rfkill *bt_rfkill;
754
755
756
757
758
759/* =================================== */
760/* Initialization & clean-up functions */
761/* =================================== */
762
763static int dmi_check_cb(const struct dmi_system_id *id)
764{
765 pr_info("Identified laptop model '%s'\n", id->ident);
766 extra_features = false;
767 return 1;
768}
769
770static int dmi_check_cb_extra(const struct dmi_system_id *id)
771{
772 pr_info("Identified laptop model '%s', enabling extra features\n",
773 id->ident);
774 extra_features = true;
775 return 1;
776}
777
778static const struct dmi_system_id compal_dmi_table[] __initconst = {
779 {
780 .ident = "FL90/IFL90",
781 .matches = {
782 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
783 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
784 },
785 .callback = dmi_check_cb
786 },
787 {
788 .ident = "FL90/IFL90",
789 .matches = {
790 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
791 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
792 },
793 .callback = dmi_check_cb
794 },
795 {
796 .ident = "FL91/IFL91",
797 .matches = {
798 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
799 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
800 },
801 .callback = dmi_check_cb
802 },
803 {
804 .ident = "FL92/JFL92",
805 .matches = {
806 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808 },
809 .callback = dmi_check_cb
810 },
811 {
812 .ident = "FT00/IFT00",
813 .matches = {
814 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
815 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
816 },
817 .callback = dmi_check_cb
818 },
819 {
820 .ident = "Dell Mini 9",
821 .matches = {
822 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
823 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
824 },
825 .callback = dmi_check_cb
826 },
827 {
828 .ident = "Dell Mini 10",
829 .matches = {
830 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
831 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
832 },
833 .callback = dmi_check_cb
834 },
835 {
836 .ident = "Dell Mini 10v",
837 .matches = {
838 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
839 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
840 },
841 .callback = dmi_check_cb
842 },
843 {
844 .ident = "Dell Mini 1012",
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
848 },
849 .callback = dmi_check_cb
850 },
851 {
852 .ident = "Dell Inspiron 11z",
853 .matches = {
854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
856 },
857 .callback = dmi_check_cb
858 },
859 {
860 .ident = "Dell Mini 12",
861 .matches = {
862 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
863 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
864 },
865 .callback = dmi_check_cb
866 },
867 {
868 .ident = "JHL90",
869 .matches = {
870 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
871 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
872 },
873 .callback = dmi_check_cb_extra
874 },
875 {
876 .ident = "KHLB2",
877 .matches = {
878 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
879 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
880 },
881 .callback = dmi_check_cb_extra
882 },
883 { }
884};
885MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
886
887static const struct power_supply_desc psy_bat_desc = {
888 .name = DRIVER_NAME,
889 .type = POWER_SUPPLY_TYPE_BATTERY,
890 .properties = compal_bat_properties,
891 .num_properties = ARRAY_SIZE(compal_bat_properties),
892 .get_property = bat_get_property,
893 .set_property = bat_set_property,
894 .property_is_writeable = bat_writeable_property,
895};
896
897static void initialize_power_supply_data(struct compal_data *data)
898{
899 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
900 data->bat_manufacturer_name,
901 BAT_MANUFACTURER_NAME_LEN);
902 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
903
904 ec_read_sequence(BAT_MODEL_NAME_ADDR,
905 data->bat_model_name,
906 BAT_MODEL_NAME_LEN);
907 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
908
909 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
910 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
911}
912
913static void initialize_fan_control_data(struct compal_data *data)
914{
915 data->pwm_enable = 2; /* Keep motherboard in control for now */
916 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
917 if we take over... */
918}
919
920static int setup_rfkill(void)
921{
922 int ret;
923
924 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
925 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
926 (void *) WIRELESS_WLAN);
927 if (!wifi_rfkill)
928 return -ENOMEM;
929
930 ret = rfkill_register(wifi_rfkill);
931 if (ret)
932 goto err_wifi;
933
934 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
935 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
936 (void *) WIRELESS_BT);
937 if (!bt_rfkill) {
938 ret = -ENOMEM;
939 goto err_allocate_bt;
940 }
941 ret = rfkill_register(bt_rfkill);
942 if (ret)
943 goto err_register_bt;
944
945 return 0;
946
947err_register_bt:
948 rfkill_destroy(bt_rfkill);
949
950err_allocate_bt:
951 rfkill_unregister(wifi_rfkill);
952
953err_wifi:
954 rfkill_destroy(wifi_rfkill);
955
956 return ret;
957}
958
959static int compal_probe(struct platform_device *pdev)
960{
961 int err;
962 struct compal_data *data;
963 struct device *hwmon_dev;
964 struct power_supply_config psy_cfg = {};
965
966 if (!extra_features)
967 return 0;
968
969 /* Fan control */
970 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
971 if (!data)
972 return -ENOMEM;
973
974 initialize_fan_control_data(data);
975
976 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
977 if (err)
978 return err;
979
980 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
981 "compal", data,
982 compal_hwmon_groups);
983 if (IS_ERR(hwmon_dev)) {
984 err = PTR_ERR(hwmon_dev);
985 goto remove;
986 }
987
988 /* Power supply */
989 initialize_power_supply_data(data);
990 psy_cfg.drv_data = data;
991 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
992 &psy_cfg);
993 if (IS_ERR(data->psy)) {
994 err = PTR_ERR(data->psy);
995 goto remove;
996 }
997
998 platform_set_drvdata(pdev, data);
999
1000 return 0;
1001
1002remove:
1003 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1004 return err;
1005}
1006
1007static void compal_remove(struct platform_device *pdev)
1008{
1009 struct compal_data *data;
1010
1011 if (!extra_features)
1012 return;
1013
1014 pr_info("Unloading: resetting fan control to motherboard\n");
1015 pwm_disable_control();
1016
1017 data = platform_get_drvdata(pdev);
1018 power_supply_unregister(data->psy);
1019
1020 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1021}
1022
1023static struct platform_driver compal_driver = {
1024 .driver = {
1025 .name = DRIVER_NAME,
1026 },
1027 .probe = compal_probe,
1028 .remove = compal_remove,
1029};
1030
1031static int __init compal_init(void)
1032{
1033 int ret;
1034
1035 if (acpi_disabled) {
1036 pr_err("ACPI needs to be enabled for this driver to work!\n");
1037 return -ENODEV;
1038 }
1039
1040 if (!force && !dmi_check_system(compal_dmi_table)) {
1041 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
1042 return -ENODEV;
1043 }
1044
1045 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1046 struct backlight_properties props;
1047 memset(&props, 0, sizeof(struct backlight_properties));
1048 props.type = BACKLIGHT_PLATFORM;
1049 props.max_brightness = BACKLIGHT_LEVEL_MAX;
1050 compalbl_device = backlight_device_register(DRIVER_NAME,
1051 NULL, NULL,
1052 &compalbl_ops,
1053 &props);
1054 if (IS_ERR(compalbl_device))
1055 return PTR_ERR(compalbl_device);
1056 }
1057
1058 ret = platform_driver_register(&compal_driver);
1059 if (ret)
1060 goto err_backlight;
1061
1062 compal_device = platform_device_alloc(DRIVER_NAME, PLATFORM_DEVID_NONE);
1063 if (!compal_device) {
1064 ret = -ENOMEM;
1065 goto err_platform_driver;
1066 }
1067
1068 ret = platform_device_add(compal_device); /* This calls compal_probe */
1069 if (ret)
1070 goto err_platform_device;
1071
1072 ret = setup_rfkill();
1073 if (ret)
1074 goto err_rfkill;
1075
1076 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1077 return 0;
1078
1079err_rfkill:
1080 platform_device_del(compal_device);
1081
1082err_platform_device:
1083 platform_device_put(compal_device);
1084
1085err_platform_driver:
1086 platform_driver_unregister(&compal_driver);
1087
1088err_backlight:
1089 backlight_device_unregister(compalbl_device);
1090
1091 return ret;
1092}
1093
1094static void __exit compal_cleanup(void)
1095{
1096 platform_device_unregister(compal_device);
1097 platform_driver_unregister(&compal_driver);
1098 backlight_device_unregister(compalbl_device);
1099 rfkill_unregister(wifi_rfkill);
1100 rfkill_unregister(bt_rfkill);
1101 rfkill_destroy(wifi_rfkill);
1102 rfkill_destroy(bt_rfkill);
1103
1104 pr_info("Driver unloaded\n");
1105}
1106
1107module_init(compal_init);
1108module_exit(compal_cleanup);
1109
1110MODULE_AUTHOR("Cezary Jackiewicz");
1111MODULE_AUTHOR("Roald Frederickx <roald.frederickx@gmail.com>");
1112MODULE_DESCRIPTION("Compal Laptop Support");
1113MODULE_VERSION(DRIVER_VERSION);
1114MODULE_LICENSE("GPL");