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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
86
87/* ======= */
88/* Defines */
89/* ======= */
90#define DRIVER_NAME "compal-laptop"
91#define DRIVER_VERSION "0.2.7"
92
93#define BACKLIGHT_LEVEL_ADDR 0xB9
94#define BACKLIGHT_LEVEL_MAX 7
95#define BACKLIGHT_STATE_ADDR 0x59
96#define BACKLIGHT_STATE_ON_DATA 0xE1
97#define BACKLIGHT_STATE_OFF_DATA 0xE2
98
99#define WAKE_UP_ADDR 0xA4
100#define WAKE_UP_PME (1 << 0)
101#define WAKE_UP_MODEM (1 << 1)
102#define WAKE_UP_LAN (1 << 2)
103#define WAKE_UP_WLAN (1 << 4)
104#define WAKE_UP_KEY (1 << 6)
105#define WAKE_UP_MOUSE (1 << 7)
106
107#define WIRELESS_ADDR 0xBB
108#define WIRELESS_WLAN (1 << 0)
109#define WIRELESS_BT (1 << 1)
110#define WIRELESS_WLAN_EXISTS (1 << 2)
111#define WIRELESS_BT_EXISTS (1 << 3)
112#define WIRELESS_KILLSWITCH (1 << 4)
113
114#define PWM_ADDRESS 0x46
115#define PWM_DISABLE_ADDR 0x59
116#define PWM_DISABLE_DATA 0xA5
117#define PWM_ENABLE_ADDR 0x59
118#define PWM_ENABLE_DATA 0xA8
119
120#define FAN_ADDRESS 0x46
121#define FAN_DATA 0x81
122#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
123#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
124#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
125
126#define TEMP_CPU 0xB0
127#define TEMP_CPU_LOCAL 0xB1
128#define TEMP_CPU_DTS 0xB5
129#define TEMP_NORTHBRIDGE 0xB6
130#define TEMP_VGA 0xB4
131#define TEMP_SKIN 0xB2
132
133#define BAT_MANUFACTURER_NAME_ADDR 0x10
134#define BAT_MANUFACTURER_NAME_LEN 9
135#define BAT_MODEL_NAME_ADDR 0x19
136#define BAT_MODEL_NAME_LEN 6
137#define BAT_SERIAL_NUMBER_ADDR 0xC4
138#define BAT_SERIAL_NUMBER_LEN 5
139#define BAT_CHARGE_NOW 0xC2
140#define BAT_CHARGE_DESIGN 0xCA
141#define BAT_VOLTAGE_NOW 0xC6
142#define BAT_VOLTAGE_DESIGN 0xC8
143#define BAT_CURRENT_NOW 0xD0
144#define BAT_CURRENT_AVG 0xD2
145#define BAT_POWER 0xD4
146#define BAT_CAPACITY 0xCE
147#define BAT_TEMP 0xD6
148#define BAT_TEMP_AVG 0xD7
149#define BAT_STATUS0 0xC1
150#define BAT_STATUS1 0xF0
151#define BAT_STATUS2 0xF1
152#define BAT_STOP_CHARGE1 0xF2
153#define BAT_STOP_CHARGE2 0xF3
154
155#define BAT_S0_DISCHARGE (1 << 0)
156#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
157#define BAT_S0_LOW (1 << 3)
158#define BAT_S0_CHARGING (1 << 1)
159#define BAT_S0_AC (1 << 7)
160#define BAT_S1_EXISTS (1 << 0)
161#define BAT_S1_FULL (1 << 1)
162#define BAT_S1_EMPTY (1 << 2)
163#define BAT_S1_LiION_OR_NiMH (1 << 7)
164#define BAT_S2_LOW_LOW (1 << 0)
165#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
166#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
167#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
168#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
169
170
171/* ======= */
172/* Structs */
173/* ======= */
174struct compal_data{
175 /* Fan control */
176 struct device *hwmon_dev;
177 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by moterboard */
178 unsigned char curr_pwm;
179
180 /* Power supply */
181 struct power_supply psy;
182 struct power_supply_info psy_info;
183 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
184 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
185 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
186};
187
188
189/* =============== */
190/* General globals */
191/* =============== */
192static int force;
193module_param(force, bool, 0);
194MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
195
196/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
197 * only gets enabled on a JHL90 board. Might work with the others too */
198static bool extra_features;
199
200/* Nasty stuff. For some reason the fan control is very un-linear. I've
201 * come up with these values by looping through the possible inputs and
202 * watching the output of address 0x4F (do an ec_transaction writing 0x33
203 * into 0x4F and read a few bytes from the output, like so:
204 * u8 writeData = 0x33;
205 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
206 * That address is labeled "fan1 table information" in the service manual.
207 * It should be clear which value in 'buffer' changes). This seems to be
208 * related to fan speed. It isn't a proper 'realtime' fan speed value
209 * though, because physically stopping or speeding up the fan doesn't
210 * change it. It might be the average voltage or current of the pwm output.
211 * Nevertheless, it is more fine-grained than the actual RPM reading */
212static const unsigned char pwm_lookup_table[256] = {
213 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
214 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
215 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
216 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
217 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
218 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
219 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
220 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
221 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
222 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
223 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
224 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
225 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
226 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
227 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
228 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
229 187, 187, 193, 50
230};
231
232
233
234
235/* ========================= */
236/* Hardware access functions */
237/* ========================= */
238/* General access */
239static u8 ec_read_u8(u8 addr)
240{
241 u8 value;
242 ec_read(addr, &value);
243 return value;
244}
245
246static s8 ec_read_s8(u8 addr)
247{
248 return (s8)ec_read_u8(addr);
249}
250
251static u16 ec_read_u16(u8 addr)
252{
253 int hi, lo;
254 lo = ec_read_u8(addr);
255 hi = ec_read_u8(addr + 1);
256 return (hi << 8) + lo;
257}
258
259static s16 ec_read_s16(u8 addr)
260{
261 return (s16) ec_read_u16(addr);
262}
263
264static void ec_read_sequence(u8 addr, u8 *buf, int len)
265{
266 int i;
267 for (i = 0; i < len; i++)
268 ec_read(addr + i, buf + i);
269}
270
271
272/* Backlight access */
273static int set_backlight_level(int level)
274{
275 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
276 return -EINVAL;
277
278 ec_write(BACKLIGHT_LEVEL_ADDR, level);
279
280 return 0;
281}
282
283static int get_backlight_level(void)
284{
285 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
286}
287
288static void set_backlight_state(bool on)
289{
290 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
291 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
292}
293
294
295/* Fan control access */
296static void pwm_enable_control(void)
297{
298 unsigned char writeData = PWM_ENABLE_DATA;
299 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
300}
301
302static void pwm_disable_control(void)
303{
304 unsigned char writeData = PWM_DISABLE_DATA;
305 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
306}
307
308static void set_pwm(int pwm)
309{
310 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
311}
312
313static int get_fan_rpm(void)
314{
315 u8 value, data = FAN_DATA;
316 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
317 return 100 * (int)value;
318}
319
320
321
322
323/* =================== */
324/* Interface functions */
325/* =================== */
326
327/* Backlight interface */
328static int bl_get_brightness(struct backlight_device *b)
329{
330 return get_backlight_level();
331}
332
333static int bl_update_status(struct backlight_device *b)
334{
335 int ret = set_backlight_level(b->props.brightness);
336 if (ret)
337 return ret;
338
339 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
340 && !(b->props.state & BL_CORE_SUSPENDED)
341 && !(b->props.state & BL_CORE_FBBLANK));
342 return 0;
343}
344
345static const struct backlight_ops compalbl_ops = {
346 .get_brightness = bl_get_brightness,
347 .update_status = bl_update_status,
348};
349
350
351/* Wireless interface */
352static int compal_rfkill_set(void *data, bool blocked)
353{
354 unsigned long radio = (unsigned long) data;
355 u8 result = ec_read_u8(WIRELESS_ADDR);
356 u8 value;
357
358 if (!blocked)
359 value = (u8) (result | radio);
360 else
361 value = (u8) (result & ~radio);
362 ec_write(WIRELESS_ADDR, value);
363
364 return 0;
365}
366
367static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
368{
369 u8 result = ec_read_u8(WIRELESS_ADDR);
370 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
371 rfkill_set_hw_state(rfkill, hw_blocked);
372}
373
374static const struct rfkill_ops compal_rfkill_ops = {
375 .poll = compal_rfkill_poll,
376 .set_block = compal_rfkill_set,
377};
378
379
380/* Wake_up interface */
381#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
382static ssize_t NAME##_show(struct device *dev, \
383 struct device_attribute *attr, char *buf) \
384{ \
385 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
386} \
387static ssize_t NAME##_store(struct device *dev, \
388 struct device_attribute *attr, const char *buf, size_t count) \
389{ \
390 int state; \
391 u8 old_val = ec_read_u8(ADDR); \
392 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
393 return -EINVAL; \
394 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
395 return count; \
396}
397
398SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
399SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
400SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
401SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
402SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
403SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
404
405
406/* General hwmon interface */
407static ssize_t hwmon_name_show(struct device *dev,
408 struct device_attribute *attr, char *buf)
409{
410 return sprintf(buf, "%s\n", DRIVER_NAME);
411}
412
413
414/* Fan control interface */
415static ssize_t pwm_enable_show(struct device *dev,
416 struct device_attribute *attr, char *buf)
417{
418 struct compal_data *data = dev_get_drvdata(dev);
419 return sprintf(buf, "%d\n", data->pwm_enable);
420}
421
422static ssize_t pwm_enable_store(struct device *dev,
423 struct device_attribute *attr, const char *buf, size_t count)
424{
425 struct compal_data *data = dev_get_drvdata(dev);
426 long val;
427 int err;
428 err = strict_strtol(buf, 10, &val);
429 if (err)
430 return err;
431 if (val < 0)
432 return -EINVAL;
433
434 data->pwm_enable = val;
435
436 switch (val) {
437 case 0: /* Full speed */
438 pwm_enable_control();
439 set_pwm(255);
440 break;
441 case 1: /* As set by pwm1 */
442 pwm_enable_control();
443 set_pwm(data->curr_pwm);
444 break;
445 default: /* Control by motherboard */
446 pwm_disable_control();
447 break;
448 }
449
450 return count;
451}
452
453static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
454 char *buf)
455{
456 struct compal_data *data = dev_get_drvdata(dev);
457 return sprintf(buf, "%hhu\n", data->curr_pwm);
458}
459
460static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
461 const char *buf, size_t count)
462{
463 struct compal_data *data = dev_get_drvdata(dev);
464 long val;
465 int err;
466 err = strict_strtol(buf, 10, &val);
467 if (err)
468 return err;
469 if (val < 0 || val > 255)
470 return -EINVAL;
471
472 data->curr_pwm = val;
473
474 if (data->pwm_enable != 1)
475 return count;
476 set_pwm(val);
477
478 return count;
479}
480
481static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
482 char *buf)
483{
484 return sprintf(buf, "%d\n", get_fan_rpm());
485}
486
487
488/* Temperature interface */
489#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
490static ssize_t temp_##POSTFIX(struct device *dev, \
491 struct device_attribute *attr, char *buf) \
492{ \
493 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
494} \
495static ssize_t label_##POSTFIX(struct device *dev, \
496 struct device_attribute *attr, char *buf) \
497{ \
498 return sprintf(buf, "%s\n", LABEL); \
499}
500
501/* Labels as in service guide */
502TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
503TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
504TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
505TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
506TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
507TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
508
509
510/* Power supply interface */
511static int bat_status(void)
512{
513 u8 status0 = ec_read_u8(BAT_STATUS0);
514 u8 status1 = ec_read_u8(BAT_STATUS1);
515
516 if (status0 & BAT_S0_CHARGING)
517 return POWER_SUPPLY_STATUS_CHARGING;
518 if (status0 & BAT_S0_DISCHARGE)
519 return POWER_SUPPLY_STATUS_DISCHARGING;
520 if (status1 & BAT_S1_FULL)
521 return POWER_SUPPLY_STATUS_FULL;
522 return POWER_SUPPLY_STATUS_NOT_CHARGING;
523}
524
525static int bat_health(void)
526{
527 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
528
529 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
530 return POWER_SUPPLY_HEALTH_OVERHEAT;
531 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
532 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
533 if (status & BAT_STOP_CHRG1_BAD_CELL)
534 return POWER_SUPPLY_HEALTH_DEAD;
535 if (status & BAT_STOP_CHRG1_COMM_FAIL)
536 return POWER_SUPPLY_HEALTH_UNKNOWN;
537 return POWER_SUPPLY_HEALTH_GOOD;
538}
539
540static int bat_is_present(void)
541{
542 u8 status = ec_read_u8(BAT_STATUS2);
543 return ((status & BAT_S1_EXISTS) != 0);
544}
545
546static int bat_technology(void)
547{
548 u8 status = ec_read_u8(BAT_STATUS1);
549
550 if (status & BAT_S1_LiION_OR_NiMH)
551 return POWER_SUPPLY_TECHNOLOGY_LION;
552 return POWER_SUPPLY_TECHNOLOGY_NiMH;
553}
554
555static int bat_capacity_level(void)
556{
557 u8 status0 = ec_read_u8(BAT_STATUS0);
558 u8 status1 = ec_read_u8(BAT_STATUS1);
559 u8 status2 = ec_read_u8(BAT_STATUS2);
560
561 if (status0 & BAT_S0_DISCHRG_CRITICAL
562 || status1 & BAT_S1_EMPTY
563 || status2 & BAT_S2_LOW_LOW)
564 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
565 if (status0 & BAT_S0_LOW)
566 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
567 if (status1 & BAT_S1_FULL)
568 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
569 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
570}
571
572static int bat_get_property(struct power_supply *psy,
573 enum power_supply_property psp,
574 union power_supply_propval *val)
575{
576 struct compal_data *data;
577 data = container_of(psy, struct compal_data, psy);
578
579 switch (psp) {
580 case POWER_SUPPLY_PROP_STATUS:
581 val->intval = bat_status();
582 break;
583 case POWER_SUPPLY_PROP_HEALTH:
584 val->intval = bat_health();
585 break;
586 case POWER_SUPPLY_PROP_PRESENT:
587 val->intval = bat_is_present();
588 break;
589 case POWER_SUPPLY_PROP_TECHNOLOGY:
590 val->intval = bat_technology();
591 break;
592 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
593 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
594 break;
595 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
596 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
597 break;
598 case POWER_SUPPLY_PROP_CURRENT_NOW:
599 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
600 break;
601 case POWER_SUPPLY_PROP_CURRENT_AVG:
602 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
603 break;
604 case POWER_SUPPLY_PROP_POWER_NOW:
605 val->intval = ec_read_u8(BAT_POWER) * 1000000;
606 break;
607 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
608 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
609 break;
610 case POWER_SUPPLY_PROP_CHARGE_NOW:
611 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
612 break;
613 case POWER_SUPPLY_PROP_CAPACITY:
614 val->intval = ec_read_u8(BAT_CAPACITY);
615 break;
616 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
617 val->intval = bat_capacity_level();
618 break;
619 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
620 * the number of degrees, whereas BAT_TEMP is somewhat more
621 * complicated. It looks like this is a negative nember with a
622 * 100/256 divider and an offset of 222. Both were determined
623 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
624 case POWER_SUPPLY_PROP_TEMP:
625 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
626 break;
627 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
628 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
629 break;
630 /* Neither the model name nor manufacturer name work for me. */
631 case POWER_SUPPLY_PROP_MODEL_NAME:
632 val->strval = data->bat_model_name;
633 break;
634 case POWER_SUPPLY_PROP_MANUFACTURER:
635 val->strval = data->bat_manufacturer_name;
636 break;
637 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
638 val->strval = data->bat_serial_number;
639 break;
640 default:
641 break;
642 }
643 return 0;
644}
645
646
647
648
649
650/* ============== */
651/* Driver Globals */
652/* ============== */
653static DEVICE_ATTR(wake_up_pme,
654 0644, wake_up_pme_show, wake_up_pme_store);
655static DEVICE_ATTR(wake_up_modem,
656 0644, wake_up_modem_show, wake_up_modem_store);
657static DEVICE_ATTR(wake_up_lan,
658 0644, wake_up_lan_show, wake_up_lan_store);
659static DEVICE_ATTR(wake_up_wlan,
660 0644, wake_up_wlan_show, wake_up_wlan_store);
661static DEVICE_ATTR(wake_up_key,
662 0644, wake_up_key_show, wake_up_key_store);
663static DEVICE_ATTR(wake_up_mouse,
664 0644, wake_up_mouse_show, wake_up_mouse_store);
665
666static SENSOR_DEVICE_ATTR(name, S_IRUGO, hwmon_name_show, NULL, 1);
667static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL, 1);
668static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL, 1);
669static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL, 1);
670static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL, 1);
671static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL, 1);
672static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL, 1);
673static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL, 1);
674static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL, 1);
675static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL, 1);
676static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL, 1);
677static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL, 1);
678static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL, 1);
679static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL, 1);
680static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store, 1);
681static SENSOR_DEVICE_ATTR(pwm1_enable,
682 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store, 0);
683
684static struct attribute *compal_attributes[] = {
685 &dev_attr_wake_up_pme.attr,
686 &dev_attr_wake_up_modem.attr,
687 &dev_attr_wake_up_lan.attr,
688 &dev_attr_wake_up_wlan.attr,
689 &dev_attr_wake_up_key.attr,
690 &dev_attr_wake_up_mouse.attr,
691 /* Maybe put the sensor-stuff in a separate hwmon-driver? That way,
692 * the hwmon sysfs won't be cluttered with the above files. */
693 &sensor_dev_attr_name.dev_attr.attr,
694 &sensor_dev_attr_pwm1_enable.dev_attr.attr,
695 &sensor_dev_attr_pwm1.dev_attr.attr,
696 &sensor_dev_attr_fan1_input.dev_attr.attr,
697 &sensor_dev_attr_temp1_input.dev_attr.attr,
698 &sensor_dev_attr_temp2_input.dev_attr.attr,
699 &sensor_dev_attr_temp3_input.dev_attr.attr,
700 &sensor_dev_attr_temp4_input.dev_attr.attr,
701 &sensor_dev_attr_temp5_input.dev_attr.attr,
702 &sensor_dev_attr_temp6_input.dev_attr.attr,
703 &sensor_dev_attr_temp1_label.dev_attr.attr,
704 &sensor_dev_attr_temp2_label.dev_attr.attr,
705 &sensor_dev_attr_temp3_label.dev_attr.attr,
706 &sensor_dev_attr_temp4_label.dev_attr.attr,
707 &sensor_dev_attr_temp5_label.dev_attr.attr,
708 &sensor_dev_attr_temp6_label.dev_attr.attr,
709 NULL
710};
711
712static struct attribute_group compal_attribute_group = {
713 .attrs = compal_attributes
714};
715
716static int __devinit compal_probe(struct platform_device *);
717static int __devexit compal_remove(struct platform_device *);
718static struct platform_driver compal_driver = {
719 .driver = {
720 .name = DRIVER_NAME,
721 .owner = THIS_MODULE,
722 },
723 .probe = compal_probe,
724 .remove = __devexit_p(compal_remove)
725};
726
727static enum power_supply_property compal_bat_properties[] = {
728 POWER_SUPPLY_PROP_STATUS,
729 POWER_SUPPLY_PROP_HEALTH,
730 POWER_SUPPLY_PROP_PRESENT,
731 POWER_SUPPLY_PROP_TECHNOLOGY,
732 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
733 POWER_SUPPLY_PROP_VOLTAGE_NOW,
734 POWER_SUPPLY_PROP_CURRENT_NOW,
735 POWER_SUPPLY_PROP_CURRENT_AVG,
736 POWER_SUPPLY_PROP_POWER_NOW,
737 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
738 POWER_SUPPLY_PROP_CHARGE_NOW,
739 POWER_SUPPLY_PROP_CAPACITY,
740 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
741 POWER_SUPPLY_PROP_TEMP,
742 POWER_SUPPLY_PROP_TEMP_AMBIENT,
743 POWER_SUPPLY_PROP_MODEL_NAME,
744 POWER_SUPPLY_PROP_MANUFACTURER,
745 POWER_SUPPLY_PROP_SERIAL_NUMBER,
746};
747
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 struct dmi_system_id __initdata compal_dmi_table[] = {
779 {
780 .ident = "FL90/IFL90",
781 .matches = {
782 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
783 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
784 },
785 .callback = dmi_check_cb
786 },
787 {
788 .ident = "FL90/IFL90",
789 .matches = {
790 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
791 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
792 },
793 .callback = dmi_check_cb
794 },
795 {
796 .ident = "FL91/IFL91",
797 .matches = {
798 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
799 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
800 },
801 .callback = dmi_check_cb
802 },
803 {
804 .ident = "FL92/JFL92",
805 .matches = {
806 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808 },
809 .callback = dmi_check_cb
810 },
811 {
812 .ident = "FT00/IFT00",
813 .matches = {
814 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
815 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
816 },
817 .callback = dmi_check_cb
818 },
819 {
820 .ident = "Dell Mini 9",
821 .matches = {
822 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
823 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
824 },
825 .callback = dmi_check_cb
826 },
827 {
828 .ident = "Dell Mini 10",
829 .matches = {
830 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
831 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
832 },
833 .callback = dmi_check_cb
834 },
835 {
836 .ident = "Dell Mini 10v",
837 .matches = {
838 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
839 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
840 },
841 .callback = dmi_check_cb
842 },
843 {
844 .ident = "Dell Mini 1012",
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
848 },
849 .callback = dmi_check_cb
850 },
851 {
852 .ident = "Dell Inspiron 11z",
853 .matches = {
854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
856 },
857 .callback = dmi_check_cb
858 },
859 {
860 .ident = "Dell Mini 12",
861 .matches = {
862 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
863 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
864 },
865 .callback = dmi_check_cb
866 },
867 {
868 .ident = "JHL90",
869 .matches = {
870 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
871 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
872 },
873 .callback = dmi_check_cb_extra
874 },
875 {
876 .ident = "KHLB2",
877 .matches = {
878 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
879 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
880 },
881 .callback = dmi_check_cb_extra
882 },
883 { }
884};
885
886static void initialize_power_supply_data(struct compal_data *data)
887{
888 data->psy.name = DRIVER_NAME;
889 data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
890 data->psy.properties = compal_bat_properties;
891 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties);
892 data->psy.get_property = bat_get_property;
893
894 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
895 data->bat_manufacturer_name,
896 BAT_MANUFACTURER_NAME_LEN);
897 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
898
899 ec_read_sequence(BAT_MODEL_NAME_ADDR,
900 data->bat_model_name,
901 BAT_MODEL_NAME_LEN);
902 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
903
904 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
905 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
906}
907
908static void initialize_fan_control_data(struct compal_data *data)
909{
910 data->pwm_enable = 2; /* Keep motherboard in control for now */
911 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
912 if we take over... */
913}
914
915static int setup_rfkill(void)
916{
917 int ret;
918
919 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
920 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
921 (void *) WIRELESS_WLAN);
922 if (!wifi_rfkill)
923 return -ENOMEM;
924
925 ret = rfkill_register(wifi_rfkill);
926 if (ret)
927 goto err_wifi;
928
929 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
930 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
931 (void *) WIRELESS_BT);
932 if (!bt_rfkill) {
933 ret = -ENOMEM;
934 goto err_allocate_bt;
935 }
936 ret = rfkill_register(bt_rfkill);
937 if (ret)
938 goto err_register_bt;
939
940 return 0;
941
942err_register_bt:
943 rfkill_destroy(bt_rfkill);
944
945err_allocate_bt:
946 rfkill_unregister(wifi_rfkill);
947
948err_wifi:
949 rfkill_destroy(wifi_rfkill);
950
951 return ret;
952}
953
954static int __init compal_init(void)
955{
956 int ret;
957
958 if (acpi_disabled) {
959 pr_err("ACPI needs to be enabled for this driver to work!\n");
960 return -ENODEV;
961 }
962
963 if (!force && !dmi_check_system(compal_dmi_table)) {
964 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
965 return -ENODEV;
966 }
967
968 if (!acpi_video_backlight_support()) {
969 struct backlight_properties props;
970 memset(&props, 0, sizeof(struct backlight_properties));
971 props.type = BACKLIGHT_PLATFORM;
972 props.max_brightness = BACKLIGHT_LEVEL_MAX;
973 compalbl_device = backlight_device_register(DRIVER_NAME,
974 NULL, NULL,
975 &compalbl_ops,
976 &props);
977 if (IS_ERR(compalbl_device))
978 return PTR_ERR(compalbl_device);
979 }
980
981 ret = platform_driver_register(&compal_driver);
982 if (ret)
983 goto err_backlight;
984
985 compal_device = platform_device_alloc(DRIVER_NAME, -1);
986 if (!compal_device) {
987 ret = -ENOMEM;
988 goto err_platform_driver;
989 }
990
991 ret = platform_device_add(compal_device); /* This calls compal_probe */
992 if (ret)
993 goto err_platform_device;
994
995 ret = setup_rfkill();
996 if (ret)
997 goto err_rfkill;
998
999 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1000 return 0;
1001
1002err_rfkill:
1003 platform_device_del(compal_device);
1004
1005err_platform_device:
1006 platform_device_put(compal_device);
1007
1008err_platform_driver:
1009 platform_driver_unregister(&compal_driver);
1010
1011err_backlight:
1012 backlight_device_unregister(compalbl_device);
1013
1014 return ret;
1015}
1016
1017static int __devinit compal_probe(struct platform_device *pdev)
1018{
1019 int err;
1020 struct compal_data *data;
1021
1022 if (!extra_features)
1023 return 0;
1024
1025 /* Fan control */
1026 data = kzalloc(sizeof(struct compal_data), GFP_KERNEL);
1027 if (!data)
1028 return -ENOMEM;
1029
1030 initialize_fan_control_data(data);
1031
1032 err = sysfs_create_group(&pdev->dev.kobj, &compal_attribute_group);
1033 if (err) {
1034 kfree(data);
1035 return err;
1036 }
1037
1038 data->hwmon_dev = hwmon_device_register(&pdev->dev);
1039 if (IS_ERR(data->hwmon_dev)) {
1040 err = PTR_ERR(data->hwmon_dev);
1041 sysfs_remove_group(&pdev->dev.kobj,
1042 &compal_attribute_group);
1043 kfree(data);
1044 return err;
1045 }
1046
1047 /* Power supply */
1048 initialize_power_supply_data(data);
1049 power_supply_register(&compal_device->dev, &data->psy);
1050
1051 platform_set_drvdata(pdev, data);
1052
1053 return 0;
1054}
1055
1056static void __exit compal_cleanup(void)
1057{
1058 platform_device_unregister(compal_device);
1059 platform_driver_unregister(&compal_driver);
1060 backlight_device_unregister(compalbl_device);
1061 rfkill_unregister(wifi_rfkill);
1062 rfkill_unregister(bt_rfkill);
1063 rfkill_destroy(wifi_rfkill);
1064 rfkill_destroy(bt_rfkill);
1065
1066 pr_info("Driver unloaded\n");
1067}
1068
1069static int __devexit compal_remove(struct platform_device *pdev)
1070{
1071 struct compal_data *data;
1072
1073 if (!extra_features)
1074 return 0;
1075
1076 pr_info("Unloading: resetting fan control to motherboard\n");
1077 pwm_disable_control();
1078
1079 data = platform_get_drvdata(pdev);
1080 hwmon_device_unregister(data->hwmon_dev);
1081 power_supply_unregister(&data->psy);
1082
1083 platform_set_drvdata(pdev, NULL);
1084 kfree(data);
1085
1086 sysfs_remove_group(&pdev->dev.kobj, &compal_attribute_group);
1087
1088 return 0;
1089}
1090
1091
1092module_init(compal_init);
1093module_exit(compal_cleanup);
1094
1095MODULE_AUTHOR("Cezary Jackiewicz");
1096MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1097MODULE_DESCRIPTION("Compal Laptop Support");
1098MODULE_VERSION(DRIVER_VERSION);
1099MODULE_LICENSE("GPL");
1100
1101MODULE_ALIAS("dmi:*:rnIFL90:rvrIFT00:*");
1102MODULE_ALIAS("dmi:*:rnIFL90:rvrREFERENCE:*");
1103MODULE_ALIAS("dmi:*:rnIFL91:rvrIFT00:*");
1104MODULE_ALIAS("dmi:*:rnJFL92:rvrIFT00:*");
1105MODULE_ALIAS("dmi:*:rnIFT00:rvrIFT00:*");
1106MODULE_ALIAS("dmi:*:rnJHL90:rvrREFERENCE:*");
1107MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron910:*");
1108MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1010:*");
1109MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1011:*");
1110MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1012:*");
1111MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1110:*");
1112MODULE_ALIAS("dmi:*:svnDellInc.:pnInspiron1210:*");
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");