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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/fb.h>
72#include <acpi/video.h>
73
74/* ======= */
75/* Defines */
76/* ======= */
77#define DRIVER_NAME "compal-laptop"
78#define DRIVER_VERSION "0.2.7"
79
80#define BACKLIGHT_LEVEL_ADDR 0xB9
81#define BACKLIGHT_LEVEL_MAX 7
82#define BACKLIGHT_STATE_ADDR 0x59
83#define BACKLIGHT_STATE_ON_DATA 0xE1
84#define BACKLIGHT_STATE_OFF_DATA 0xE2
85
86#define WAKE_UP_ADDR 0xA4
87#define WAKE_UP_PME (1 << 0)
88#define WAKE_UP_MODEM (1 << 1)
89#define WAKE_UP_LAN (1 << 2)
90#define WAKE_UP_WLAN (1 << 4)
91#define WAKE_UP_KEY (1 << 6)
92#define WAKE_UP_MOUSE (1 << 7)
93
94#define WIRELESS_ADDR 0xBB
95#define WIRELESS_WLAN (1 << 0)
96#define WIRELESS_BT (1 << 1)
97#define WIRELESS_WLAN_EXISTS (1 << 2)
98#define WIRELESS_BT_EXISTS (1 << 3)
99#define WIRELESS_KILLSWITCH (1 << 4)
100
101#define PWM_ADDRESS 0x46
102#define PWM_DISABLE_ADDR 0x59
103#define PWM_DISABLE_DATA 0xA5
104#define PWM_ENABLE_ADDR 0x59
105#define PWM_ENABLE_DATA 0xA8
106
107#define FAN_ADDRESS 0x46
108#define FAN_DATA 0x81
109#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
110#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
111#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
112
113#define TEMP_CPU 0xB0
114#define TEMP_CPU_LOCAL 0xB1
115#define TEMP_CPU_DTS 0xB5
116#define TEMP_NORTHBRIDGE 0xB6
117#define TEMP_VGA 0xB4
118#define TEMP_SKIN 0xB2
119
120#define BAT_MANUFACTURER_NAME_ADDR 0x10
121#define BAT_MANUFACTURER_NAME_LEN 9
122#define BAT_MODEL_NAME_ADDR 0x19
123#define BAT_MODEL_NAME_LEN 6
124#define BAT_SERIAL_NUMBER_ADDR 0xC4
125#define BAT_SERIAL_NUMBER_LEN 5
126#define BAT_CHARGE_NOW 0xC2
127#define BAT_CHARGE_DESIGN 0xCA
128#define BAT_VOLTAGE_NOW 0xC6
129#define BAT_VOLTAGE_DESIGN 0xC8
130#define BAT_CURRENT_NOW 0xD0
131#define BAT_CURRENT_AVG 0xD2
132#define BAT_POWER 0xD4
133#define BAT_CAPACITY 0xCE
134#define BAT_TEMP 0xD6
135#define BAT_TEMP_AVG 0xD7
136#define BAT_STATUS0 0xC1
137#define BAT_STATUS1 0xF0
138#define BAT_STATUS2 0xF1
139#define BAT_STOP_CHARGE1 0xF2
140#define BAT_STOP_CHARGE2 0xF3
141#define BAT_CHARGE_LIMIT 0x03
142#define BAT_CHARGE_LIMIT_MAX 100
143
144#define BAT_S0_DISCHARGE (1 << 0)
145#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
146#define BAT_S0_LOW (1 << 3)
147#define BAT_S0_CHARGING (1 << 1)
148#define BAT_S0_AC (1 << 7)
149#define BAT_S1_EXISTS (1 << 0)
150#define BAT_S1_FULL (1 << 1)
151#define BAT_S1_EMPTY (1 << 2)
152#define BAT_S1_LiION_OR_NiMH (1 << 7)
153#define BAT_S2_LOW_LOW (1 << 0)
154#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
155#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
156#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
157#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
158
159
160/* ======= */
161/* Structs */
162/* ======= */
163struct compal_data{
164 /* Fan control */
165 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
166 unsigned char curr_pwm;
167
168 /* Power supply */
169 struct power_supply *psy;
170 struct power_supply_info psy_info;
171 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
172 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
173 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
174};
175
176
177/* =============== */
178/* General globals */
179/* =============== */
180static bool force;
181module_param(force, bool, 0);
182MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
183
184/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
185 * only gets enabled on a JHL90 board. Might work with the others too */
186static bool extra_features;
187
188/* Nasty stuff. For some reason the fan control is very un-linear. I've
189 * come up with these values by looping through the possible inputs and
190 * watching the output of address 0x4F (do an ec_transaction writing 0x33
191 * into 0x4F and read a few bytes from the output, like so:
192 * u8 writeData = 0x33;
193 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
194 * That address is labeled "fan1 table information" in the service manual.
195 * It should be clear which value in 'buffer' changes). This seems to be
196 * related to fan speed. It isn't a proper 'realtime' fan speed value
197 * though, because physically stopping or speeding up the fan doesn't
198 * change it. It might be the average voltage or current of the pwm output.
199 * Nevertheless, it is more fine-grained than the actual RPM reading */
200static const unsigned char pwm_lookup_table[256] = {
201 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
202 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
203 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
204 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
205 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
206 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
207 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
208 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
209 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
210 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
211 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
212 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
213 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
214 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
215 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
216 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
217 187, 187, 193, 50
218};
219
220
221
222
223/* ========================= */
224/* Hardware access functions */
225/* ========================= */
226/* General access */
227static u8 ec_read_u8(u8 addr)
228{
229 u8 value = 0;
230 ec_read(addr, &value);
231 return value;
232}
233
234static s8 ec_read_s8(u8 addr)
235{
236 return (s8)ec_read_u8(addr);
237}
238
239static u16 ec_read_u16(u8 addr)
240{
241 int hi, lo;
242 lo = ec_read_u8(addr);
243 hi = ec_read_u8(addr + 1);
244 return (hi << 8) + lo;
245}
246
247static s16 ec_read_s16(u8 addr)
248{
249 return (s16) ec_read_u16(addr);
250}
251
252static void ec_read_sequence(u8 addr, u8 *buf, int len)
253{
254 int i;
255 for (i = 0; i < len; i++)
256 ec_read(addr + i, buf + i);
257}
258
259
260/* Backlight access */
261static int set_backlight_level(int level)
262{
263 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
264 return -EINVAL;
265
266 ec_write(BACKLIGHT_LEVEL_ADDR, level);
267
268 return 0;
269}
270
271static int get_backlight_level(void)
272{
273 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
274}
275
276static void set_backlight_state(bool on)
277{
278 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
279 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
280}
281
282
283/* Fan control access */
284static void pwm_enable_control(void)
285{
286 unsigned char writeData = PWM_ENABLE_DATA;
287 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
288}
289
290static void pwm_disable_control(void)
291{
292 unsigned char writeData = PWM_DISABLE_DATA;
293 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
294}
295
296static void set_pwm(int pwm)
297{
298 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
299}
300
301static int get_fan_rpm(void)
302{
303 u8 value, data = FAN_DATA;
304 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
305 return 100 * (int)value;
306}
307
308
309
310
311/* =================== */
312/* Interface functions */
313/* =================== */
314
315/* Backlight interface */
316static int bl_get_brightness(struct backlight_device *b)
317{
318 return get_backlight_level();
319}
320
321static int bl_update_status(struct backlight_device *b)
322{
323 int ret = set_backlight_level(b->props.brightness);
324 if (ret)
325 return ret;
326
327 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
328 && !(b->props.state & BL_CORE_SUSPENDED)
329 && !(b->props.state & BL_CORE_FBBLANK));
330 return 0;
331}
332
333static const struct backlight_ops compalbl_ops = {
334 .get_brightness = bl_get_brightness,
335 .update_status = bl_update_status,
336};
337
338
339/* Wireless interface */
340static int compal_rfkill_set(void *data, bool blocked)
341{
342 unsigned long radio = (unsigned long) data;
343 u8 result = ec_read_u8(WIRELESS_ADDR);
344 u8 value;
345
346 if (!blocked)
347 value = (u8) (result | radio);
348 else
349 value = (u8) (result & ~radio);
350 ec_write(WIRELESS_ADDR, value);
351
352 return 0;
353}
354
355static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
356{
357 u8 result = ec_read_u8(WIRELESS_ADDR);
358 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
359 rfkill_set_hw_state(rfkill, hw_blocked);
360}
361
362static const struct rfkill_ops compal_rfkill_ops = {
363 .poll = compal_rfkill_poll,
364 .set_block = compal_rfkill_set,
365};
366
367
368/* Wake_up interface */
369#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
370static ssize_t NAME##_show(struct device *dev, \
371 struct device_attribute *attr, char *buf) \
372{ \
373 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
374} \
375static ssize_t NAME##_store(struct device *dev, \
376 struct device_attribute *attr, const char *buf, size_t count) \
377{ \
378 int state; \
379 u8 old_val = ec_read_u8(ADDR); \
380 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
381 return -EINVAL; \
382 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
383 return count; \
384}
385
386SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
387SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
388SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
389SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
390SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
391SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
392
393/* Fan control interface */
394static ssize_t pwm_enable_show(struct device *dev,
395 struct device_attribute *attr, char *buf)
396{
397 struct compal_data *data = dev_get_drvdata(dev);
398 return sprintf(buf, "%d\n", data->pwm_enable);
399}
400
401static ssize_t pwm_enable_store(struct device *dev,
402 struct device_attribute *attr, const char *buf, size_t count)
403{
404 struct compal_data *data = dev_get_drvdata(dev);
405 long val;
406 int err;
407
408 err = kstrtol(buf, 10, &val);
409 if (err)
410 return err;
411 if (val < 0)
412 return -EINVAL;
413
414 data->pwm_enable = val;
415
416 switch (val) {
417 case 0: /* Full speed */
418 pwm_enable_control();
419 set_pwm(255);
420 break;
421 case 1: /* As set by pwm1 */
422 pwm_enable_control();
423 set_pwm(data->curr_pwm);
424 break;
425 default: /* Control by motherboard */
426 pwm_disable_control();
427 break;
428 }
429
430 return count;
431}
432
433static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
434 char *buf)
435{
436 struct compal_data *data = dev_get_drvdata(dev);
437 return sprintf(buf, "%hhu\n", data->curr_pwm);
438}
439
440static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
441 const char *buf, size_t count)
442{
443 struct compal_data *data = dev_get_drvdata(dev);
444 long val;
445 int err;
446
447 err = kstrtol(buf, 10, &val);
448 if (err)
449 return err;
450 if (val < 0 || val > 255)
451 return -EINVAL;
452
453 data->curr_pwm = val;
454
455 if (data->pwm_enable != 1)
456 return count;
457 set_pwm(val);
458
459 return count;
460}
461
462static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
463 char *buf)
464{
465 return sprintf(buf, "%d\n", get_fan_rpm());
466}
467
468
469/* Temperature interface */
470#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
471static ssize_t temp_##POSTFIX(struct device *dev, \
472 struct device_attribute *attr, char *buf) \
473{ \
474 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
475} \
476static ssize_t label_##POSTFIX(struct device *dev, \
477 struct device_attribute *attr, char *buf) \
478{ \
479 return sprintf(buf, "%s\n", LABEL); \
480}
481
482/* Labels as in service guide */
483TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
484TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
485TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
486TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
487TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
488TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
489
490
491/* Power supply interface */
492static int bat_status(void)
493{
494 u8 status0 = ec_read_u8(BAT_STATUS0);
495 u8 status1 = ec_read_u8(BAT_STATUS1);
496
497 if (status0 & BAT_S0_CHARGING)
498 return POWER_SUPPLY_STATUS_CHARGING;
499 if (status0 & BAT_S0_DISCHARGE)
500 return POWER_SUPPLY_STATUS_DISCHARGING;
501 if (status1 & BAT_S1_FULL)
502 return POWER_SUPPLY_STATUS_FULL;
503 return POWER_SUPPLY_STATUS_NOT_CHARGING;
504}
505
506static int bat_health(void)
507{
508 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
509
510 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
511 return POWER_SUPPLY_HEALTH_OVERHEAT;
512 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
513 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
514 if (status & BAT_STOP_CHRG1_BAD_CELL)
515 return POWER_SUPPLY_HEALTH_DEAD;
516 if (status & BAT_STOP_CHRG1_COMM_FAIL)
517 return POWER_SUPPLY_HEALTH_UNKNOWN;
518 return POWER_SUPPLY_HEALTH_GOOD;
519}
520
521static int bat_is_present(void)
522{
523 u8 status = ec_read_u8(BAT_STATUS2);
524 return ((status & BAT_S1_EXISTS) != 0);
525}
526
527static int bat_technology(void)
528{
529 u8 status = ec_read_u8(BAT_STATUS1);
530
531 if (status & BAT_S1_LiION_OR_NiMH)
532 return POWER_SUPPLY_TECHNOLOGY_LION;
533 return POWER_SUPPLY_TECHNOLOGY_NiMH;
534}
535
536static int bat_capacity_level(void)
537{
538 u8 status0 = ec_read_u8(BAT_STATUS0);
539 u8 status1 = ec_read_u8(BAT_STATUS1);
540 u8 status2 = ec_read_u8(BAT_STATUS2);
541
542 if (status0 & BAT_S0_DISCHRG_CRITICAL
543 || status1 & BAT_S1_EMPTY
544 || status2 & BAT_S2_LOW_LOW)
545 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
546 if (status0 & BAT_S0_LOW)
547 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
548 if (status1 & BAT_S1_FULL)
549 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
550 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
551}
552
553static int bat_get_property(struct power_supply *psy,
554 enum power_supply_property psp,
555 union power_supply_propval *val)
556{
557 struct compal_data *data = power_supply_get_drvdata(psy);
558
559 switch (psp) {
560 case POWER_SUPPLY_PROP_STATUS:
561 val->intval = bat_status();
562 break;
563 case POWER_SUPPLY_PROP_HEALTH:
564 val->intval = bat_health();
565 break;
566 case POWER_SUPPLY_PROP_PRESENT:
567 val->intval = bat_is_present();
568 break;
569 case POWER_SUPPLY_PROP_TECHNOLOGY:
570 val->intval = bat_technology();
571 break;
572 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
573 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
574 break;
575 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
576 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
577 break;
578 case POWER_SUPPLY_PROP_CURRENT_NOW:
579 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
580 break;
581 case POWER_SUPPLY_PROP_CURRENT_AVG:
582 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
583 break;
584 case POWER_SUPPLY_PROP_POWER_NOW:
585 val->intval = ec_read_u8(BAT_POWER) * 1000000;
586 break;
587 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
588 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
589 break;
590 case POWER_SUPPLY_PROP_CHARGE_NOW:
591 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
592 break;
593 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
594 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
595 break;
596 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
597 val->intval = BAT_CHARGE_LIMIT_MAX;
598 break;
599 case POWER_SUPPLY_PROP_CAPACITY:
600 val->intval = ec_read_u8(BAT_CAPACITY);
601 break;
602 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
603 val->intval = bat_capacity_level();
604 break;
605 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
606 * the number of degrees, whereas BAT_TEMP is somewhat more
607 * complicated. It looks like this is a negative nember with a
608 * 100/256 divider and an offset of 222. Both were determined
609 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
610 case POWER_SUPPLY_PROP_TEMP:
611 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
612 break;
613 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
614 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
615 break;
616 /* Neither the model name nor manufacturer name work for me. */
617 case POWER_SUPPLY_PROP_MODEL_NAME:
618 val->strval = data->bat_model_name;
619 break;
620 case POWER_SUPPLY_PROP_MANUFACTURER:
621 val->strval = data->bat_manufacturer_name;
622 break;
623 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
624 val->strval = data->bat_serial_number;
625 break;
626 default:
627 break;
628 }
629 return 0;
630}
631
632static int bat_set_property(struct power_supply *psy,
633 enum power_supply_property psp,
634 const union power_supply_propval *val)
635{
636 int level;
637
638 switch (psp) {
639 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
640 level = val->intval;
641 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
642 return -EINVAL;
643 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
644 return -EIO;
645 break;
646 default:
647 break;
648 }
649 return 0;
650}
651
652static int bat_writeable_property(struct power_supply *psy,
653 enum power_supply_property psp)
654{
655 switch (psp) {
656 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
657 return 1;
658 default:
659 return 0;
660 }
661}
662
663
664
665
666/* ============== */
667/* Driver Globals */
668/* ============== */
669static DEVICE_ATTR_RW(wake_up_pme);
670static DEVICE_ATTR_RW(wake_up_modem);
671static DEVICE_ATTR_RW(wake_up_lan);
672static DEVICE_ATTR_RW(wake_up_wlan);
673static DEVICE_ATTR_RW(wake_up_key);
674static DEVICE_ATTR_RW(wake_up_mouse);
675
676static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
677static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
678static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
679static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
680static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
681static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
682static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
683static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
684static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
685static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
686static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
687static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
688static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
689static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
690static DEVICE_ATTR(pwm1_enable,
691 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
692
693static struct attribute *compal_platform_attrs[] = {
694 &dev_attr_wake_up_pme.attr,
695 &dev_attr_wake_up_modem.attr,
696 &dev_attr_wake_up_lan.attr,
697 &dev_attr_wake_up_wlan.attr,
698 &dev_attr_wake_up_key.attr,
699 &dev_attr_wake_up_mouse.attr,
700 NULL
701};
702static const struct attribute_group compal_platform_attr_group = {
703 .attrs = compal_platform_attrs
704};
705
706static struct attribute *compal_hwmon_attrs[] = {
707 &dev_attr_pwm1_enable.attr,
708 &dev_attr_pwm1.attr,
709 &dev_attr_fan1_input.attr,
710 &dev_attr_temp1_input.attr,
711 &dev_attr_temp2_input.attr,
712 &dev_attr_temp3_input.attr,
713 &dev_attr_temp4_input.attr,
714 &dev_attr_temp5_input.attr,
715 &dev_attr_temp6_input.attr,
716 &dev_attr_temp1_label.attr,
717 &dev_attr_temp2_label.attr,
718 &dev_attr_temp3_label.attr,
719 &dev_attr_temp4_label.attr,
720 &dev_attr_temp5_label.attr,
721 &dev_attr_temp6_label.attr,
722 NULL
723};
724ATTRIBUTE_GROUPS(compal_hwmon);
725
726static int compal_probe(struct platform_device *);
727static int compal_remove(struct platform_device *);
728static struct platform_driver compal_driver = {
729 .driver = {
730 .name = DRIVER_NAME,
731 },
732 .probe = compal_probe,
733 .remove = compal_remove,
734};
735
736static enum power_supply_property compal_bat_properties[] = {
737 POWER_SUPPLY_PROP_STATUS,
738 POWER_SUPPLY_PROP_HEALTH,
739 POWER_SUPPLY_PROP_PRESENT,
740 POWER_SUPPLY_PROP_TECHNOLOGY,
741 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
742 POWER_SUPPLY_PROP_VOLTAGE_NOW,
743 POWER_SUPPLY_PROP_CURRENT_NOW,
744 POWER_SUPPLY_PROP_CURRENT_AVG,
745 POWER_SUPPLY_PROP_POWER_NOW,
746 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
747 POWER_SUPPLY_PROP_CHARGE_NOW,
748 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
749 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
750 POWER_SUPPLY_PROP_CAPACITY,
751 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
752 POWER_SUPPLY_PROP_TEMP,
753 POWER_SUPPLY_PROP_TEMP_AMBIENT,
754 POWER_SUPPLY_PROP_MODEL_NAME,
755 POWER_SUPPLY_PROP_MANUFACTURER,
756 POWER_SUPPLY_PROP_SERIAL_NUMBER,
757};
758
759static struct backlight_device *compalbl_device;
760
761static struct platform_device *compal_device;
762
763static struct rfkill *wifi_rfkill;
764static struct rfkill *bt_rfkill;
765
766
767
768
769
770/* =================================== */
771/* Initialization & clean-up functions */
772/* =================================== */
773
774static int dmi_check_cb(const struct dmi_system_id *id)
775{
776 pr_info("Identified laptop model '%s'\n", id->ident);
777 extra_features = false;
778 return 1;
779}
780
781static int dmi_check_cb_extra(const struct dmi_system_id *id)
782{
783 pr_info("Identified laptop model '%s', enabling extra features\n",
784 id->ident);
785 extra_features = true;
786 return 1;
787}
788
789static const struct dmi_system_id compal_dmi_table[] __initconst = {
790 {
791 .ident = "FL90/IFL90",
792 .matches = {
793 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
794 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
795 },
796 .callback = dmi_check_cb
797 },
798 {
799 .ident = "FL90/IFL90",
800 .matches = {
801 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
802 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
803 },
804 .callback = dmi_check_cb
805 },
806 {
807 .ident = "FL91/IFL91",
808 .matches = {
809 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
810 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
811 },
812 .callback = dmi_check_cb
813 },
814 {
815 .ident = "FL92/JFL92",
816 .matches = {
817 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
818 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
819 },
820 .callback = dmi_check_cb
821 },
822 {
823 .ident = "FT00/IFT00",
824 .matches = {
825 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
826 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
827 },
828 .callback = dmi_check_cb
829 },
830 {
831 .ident = "Dell Mini 9",
832 .matches = {
833 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
834 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
835 },
836 .callback = dmi_check_cb
837 },
838 {
839 .ident = "Dell Mini 10",
840 .matches = {
841 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
842 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
843 },
844 .callback = dmi_check_cb
845 },
846 {
847 .ident = "Dell Mini 10v",
848 .matches = {
849 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
850 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
851 },
852 .callback = dmi_check_cb
853 },
854 {
855 .ident = "Dell Mini 1012",
856 .matches = {
857 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
858 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
859 },
860 .callback = dmi_check_cb
861 },
862 {
863 .ident = "Dell Inspiron 11z",
864 .matches = {
865 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
866 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
867 },
868 .callback = dmi_check_cb
869 },
870 {
871 .ident = "Dell Mini 12",
872 .matches = {
873 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
874 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
875 },
876 .callback = dmi_check_cb
877 },
878 {
879 .ident = "JHL90",
880 .matches = {
881 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
882 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
883 },
884 .callback = dmi_check_cb_extra
885 },
886 {
887 .ident = "KHLB2",
888 .matches = {
889 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
890 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
891 },
892 .callback = dmi_check_cb_extra
893 },
894 { }
895};
896MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
897
898static const struct power_supply_desc psy_bat_desc = {
899 .name = DRIVER_NAME,
900 .type = POWER_SUPPLY_TYPE_BATTERY,
901 .properties = compal_bat_properties,
902 .num_properties = ARRAY_SIZE(compal_bat_properties),
903 .get_property = bat_get_property,
904 .set_property = bat_set_property,
905 .property_is_writeable = bat_writeable_property,
906};
907
908static void initialize_power_supply_data(struct compal_data *data)
909{
910 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
911 data->bat_manufacturer_name,
912 BAT_MANUFACTURER_NAME_LEN);
913 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
914
915 ec_read_sequence(BAT_MODEL_NAME_ADDR,
916 data->bat_model_name,
917 BAT_MODEL_NAME_LEN);
918 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
919
920 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
921 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
922}
923
924static void initialize_fan_control_data(struct compal_data *data)
925{
926 data->pwm_enable = 2; /* Keep motherboard in control for now */
927 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
928 if we take over... */
929}
930
931static int setup_rfkill(void)
932{
933 int ret;
934
935 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
936 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
937 (void *) WIRELESS_WLAN);
938 if (!wifi_rfkill)
939 return -ENOMEM;
940
941 ret = rfkill_register(wifi_rfkill);
942 if (ret)
943 goto err_wifi;
944
945 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
946 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
947 (void *) WIRELESS_BT);
948 if (!bt_rfkill) {
949 ret = -ENOMEM;
950 goto err_allocate_bt;
951 }
952 ret = rfkill_register(bt_rfkill);
953 if (ret)
954 goto err_register_bt;
955
956 return 0;
957
958err_register_bt:
959 rfkill_destroy(bt_rfkill);
960
961err_allocate_bt:
962 rfkill_unregister(wifi_rfkill);
963
964err_wifi:
965 rfkill_destroy(wifi_rfkill);
966
967 return ret;
968}
969
970static int __init compal_init(void)
971{
972 int ret;
973
974 if (acpi_disabled) {
975 pr_err("ACPI needs to be enabled for this driver to work!\n");
976 return -ENODEV;
977 }
978
979 if (!force && !dmi_check_system(compal_dmi_table)) {
980 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
981 return -ENODEV;
982 }
983
984 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
985 struct backlight_properties props;
986 memset(&props, 0, sizeof(struct backlight_properties));
987 props.type = BACKLIGHT_PLATFORM;
988 props.max_brightness = BACKLIGHT_LEVEL_MAX;
989 compalbl_device = backlight_device_register(DRIVER_NAME,
990 NULL, NULL,
991 &compalbl_ops,
992 &props);
993 if (IS_ERR(compalbl_device))
994 return PTR_ERR(compalbl_device);
995 }
996
997 ret = platform_driver_register(&compal_driver);
998 if (ret)
999 goto err_backlight;
1000
1001 compal_device = platform_device_alloc(DRIVER_NAME, -1);
1002 if (!compal_device) {
1003 ret = -ENOMEM;
1004 goto err_platform_driver;
1005 }
1006
1007 ret = platform_device_add(compal_device); /* This calls compal_probe */
1008 if (ret)
1009 goto err_platform_device;
1010
1011 ret = setup_rfkill();
1012 if (ret)
1013 goto err_rfkill;
1014
1015 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1016 return 0;
1017
1018err_rfkill:
1019 platform_device_del(compal_device);
1020
1021err_platform_device:
1022 platform_device_put(compal_device);
1023
1024err_platform_driver:
1025 platform_driver_unregister(&compal_driver);
1026
1027err_backlight:
1028 backlight_device_unregister(compalbl_device);
1029
1030 return ret;
1031}
1032
1033static int compal_probe(struct platform_device *pdev)
1034{
1035 int err;
1036 struct compal_data *data;
1037 struct device *hwmon_dev;
1038 struct power_supply_config psy_cfg = {};
1039
1040 if (!extra_features)
1041 return 0;
1042
1043 /* Fan control */
1044 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
1045 if (!data)
1046 return -ENOMEM;
1047
1048 initialize_fan_control_data(data);
1049
1050 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
1051 if (err)
1052 return err;
1053
1054 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
1055 "compal", data,
1056 compal_hwmon_groups);
1057 if (IS_ERR(hwmon_dev)) {
1058 err = PTR_ERR(hwmon_dev);
1059 goto remove;
1060 }
1061
1062 /* Power supply */
1063 initialize_power_supply_data(data);
1064 psy_cfg.drv_data = data;
1065 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
1066 &psy_cfg);
1067 if (IS_ERR(data->psy)) {
1068 err = PTR_ERR(data->psy);
1069 goto remove;
1070 }
1071
1072 platform_set_drvdata(pdev, data);
1073
1074 return 0;
1075
1076remove:
1077 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1078 return err;
1079}
1080
1081static void __exit compal_cleanup(void)
1082{
1083 platform_device_unregister(compal_device);
1084 platform_driver_unregister(&compal_driver);
1085 backlight_device_unregister(compalbl_device);
1086 rfkill_unregister(wifi_rfkill);
1087 rfkill_unregister(bt_rfkill);
1088 rfkill_destroy(wifi_rfkill);
1089 rfkill_destroy(bt_rfkill);
1090
1091 pr_info("Driver unloaded\n");
1092}
1093
1094static int compal_remove(struct platform_device *pdev)
1095{
1096 struct compal_data *data;
1097
1098 if (!extra_features)
1099 return 0;
1100
1101 pr_info("Unloading: resetting fan control to motherboard\n");
1102 pwm_disable_control();
1103
1104 data = platform_get_drvdata(pdev);
1105 power_supply_unregister(data->psy);
1106
1107 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1108
1109 return 0;
1110}
1111
1112
1113module_init(compal_init);
1114module_exit(compal_cleanup);
1115
1116MODULE_AUTHOR("Cezary Jackiewicz");
1117MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1118MODULE_DESCRIPTION("Compal Laptop Support");
1119MODULE_VERSION(DRIVER_VERSION);
1120MODULE_LICENSE("GPL");