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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
86
87/* ======= */
88/* Defines */
89/* ======= */
90#define DRIVER_NAME "compal-laptop"
91#define DRIVER_VERSION "0.2.7"
92
93#define BACKLIGHT_LEVEL_ADDR 0xB9
94#define BACKLIGHT_LEVEL_MAX 7
95#define BACKLIGHT_STATE_ADDR 0x59
96#define BACKLIGHT_STATE_ON_DATA 0xE1
97#define BACKLIGHT_STATE_OFF_DATA 0xE2
98
99#define WAKE_UP_ADDR 0xA4
100#define WAKE_UP_PME (1 << 0)
101#define WAKE_UP_MODEM (1 << 1)
102#define WAKE_UP_LAN (1 << 2)
103#define WAKE_UP_WLAN (1 << 4)
104#define WAKE_UP_KEY (1 << 6)
105#define WAKE_UP_MOUSE (1 << 7)
106
107#define WIRELESS_ADDR 0xBB
108#define WIRELESS_WLAN (1 << 0)
109#define WIRELESS_BT (1 << 1)
110#define WIRELESS_WLAN_EXISTS (1 << 2)
111#define WIRELESS_BT_EXISTS (1 << 3)
112#define WIRELESS_KILLSWITCH (1 << 4)
113
114#define PWM_ADDRESS 0x46
115#define PWM_DISABLE_ADDR 0x59
116#define PWM_DISABLE_DATA 0xA5
117#define PWM_ENABLE_ADDR 0x59
118#define PWM_ENABLE_DATA 0xA8
119
120#define FAN_ADDRESS 0x46
121#define FAN_DATA 0x81
122#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
123#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
124#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
125
126#define TEMP_CPU 0xB0
127#define TEMP_CPU_LOCAL 0xB1
128#define TEMP_CPU_DTS 0xB5
129#define TEMP_NORTHBRIDGE 0xB6
130#define TEMP_VGA 0xB4
131#define TEMP_SKIN 0xB2
132
133#define BAT_MANUFACTURER_NAME_ADDR 0x10
134#define BAT_MANUFACTURER_NAME_LEN 9
135#define BAT_MODEL_NAME_ADDR 0x19
136#define BAT_MODEL_NAME_LEN 6
137#define BAT_SERIAL_NUMBER_ADDR 0xC4
138#define BAT_SERIAL_NUMBER_LEN 5
139#define BAT_CHARGE_NOW 0xC2
140#define BAT_CHARGE_DESIGN 0xCA
141#define BAT_VOLTAGE_NOW 0xC6
142#define BAT_VOLTAGE_DESIGN 0xC8
143#define BAT_CURRENT_NOW 0xD0
144#define BAT_CURRENT_AVG 0xD2
145#define BAT_POWER 0xD4
146#define BAT_CAPACITY 0xCE
147#define BAT_TEMP 0xD6
148#define BAT_TEMP_AVG 0xD7
149#define BAT_STATUS0 0xC1
150#define BAT_STATUS1 0xF0
151#define BAT_STATUS2 0xF1
152#define BAT_STOP_CHARGE1 0xF2
153#define BAT_STOP_CHARGE2 0xF3
154
155#define BAT_S0_DISCHARGE (1 << 0)
156#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
157#define BAT_S0_LOW (1 << 3)
158#define BAT_S0_CHARGING (1 << 1)
159#define BAT_S0_AC (1 << 7)
160#define BAT_S1_EXISTS (1 << 0)
161#define BAT_S1_FULL (1 << 1)
162#define BAT_S1_EMPTY (1 << 2)
163#define BAT_S1_LiION_OR_NiMH (1 << 7)
164#define BAT_S2_LOW_LOW (1 << 0)
165#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
166#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
167#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
168#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
169
170
171/* ======= */
172/* Structs */
173/* ======= */
174struct compal_data{
175 /* Fan control */
176 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
177 unsigned char curr_pwm;
178
179 /* Power supply */
180 struct power_supply psy;
181 struct power_supply_info psy_info;
182 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
183 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
184 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
185};
186
187
188/* =============== */
189/* General globals */
190/* =============== */
191static bool force;
192module_param(force, bool, 0);
193MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
194
195/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
196 * only gets enabled on a JHL90 board. Might work with the others too */
197static bool extra_features;
198
199/* Nasty stuff. For some reason the fan control is very un-linear. I've
200 * come up with these values by looping through the possible inputs and
201 * watching the output of address 0x4F (do an ec_transaction writing 0x33
202 * into 0x4F and read a few bytes from the output, like so:
203 * u8 writeData = 0x33;
204 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
205 * That address is labeled "fan1 table information" in the service manual.
206 * It should be clear which value in 'buffer' changes). This seems to be
207 * related to fan speed. It isn't a proper 'realtime' fan speed value
208 * though, because physically stopping or speeding up the fan doesn't
209 * change it. It might be the average voltage or current of the pwm output.
210 * Nevertheless, it is more fine-grained than the actual RPM reading */
211static const unsigned char pwm_lookup_table[256] = {
212 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
213 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
214 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
215 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
216 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
217 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
218 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
219 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
220 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
221 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
222 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
223 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
224 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
225 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
226 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
227 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
228 187, 187, 193, 50
229};
230
231
232
233
234/* ========================= */
235/* Hardware access functions */
236/* ========================= */
237/* General access */
238static u8 ec_read_u8(u8 addr)
239{
240 u8 value;
241 ec_read(addr, &value);
242 return value;
243}
244
245static s8 ec_read_s8(u8 addr)
246{
247 return (s8)ec_read_u8(addr);
248}
249
250static u16 ec_read_u16(u8 addr)
251{
252 int hi, lo;
253 lo = ec_read_u8(addr);
254 hi = ec_read_u8(addr + 1);
255 return (hi << 8) + lo;
256}
257
258static s16 ec_read_s16(u8 addr)
259{
260 return (s16) ec_read_u16(addr);
261}
262
263static void ec_read_sequence(u8 addr, u8 *buf, int len)
264{
265 int i;
266 for (i = 0; i < len; i++)
267 ec_read(addr + i, buf + i);
268}
269
270
271/* Backlight access */
272static int set_backlight_level(int level)
273{
274 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
275 return -EINVAL;
276
277 ec_write(BACKLIGHT_LEVEL_ADDR, level);
278
279 return 0;
280}
281
282static int get_backlight_level(void)
283{
284 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
285}
286
287static void set_backlight_state(bool on)
288{
289 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
290 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
291}
292
293
294/* Fan control access */
295static void pwm_enable_control(void)
296{
297 unsigned char writeData = PWM_ENABLE_DATA;
298 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
299}
300
301static void pwm_disable_control(void)
302{
303 unsigned char writeData = PWM_DISABLE_DATA;
304 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
305}
306
307static void set_pwm(int pwm)
308{
309 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
310}
311
312static int get_fan_rpm(void)
313{
314 u8 value, data = FAN_DATA;
315 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
316 return 100 * (int)value;
317}
318
319
320
321
322/* =================== */
323/* Interface functions */
324/* =================== */
325
326/* Backlight interface */
327static int bl_get_brightness(struct backlight_device *b)
328{
329 return get_backlight_level();
330}
331
332static int bl_update_status(struct backlight_device *b)
333{
334 int ret = set_backlight_level(b->props.brightness);
335 if (ret)
336 return ret;
337
338 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
339 && !(b->props.state & BL_CORE_SUSPENDED)
340 && !(b->props.state & BL_CORE_FBBLANK));
341 return 0;
342}
343
344static const struct backlight_ops compalbl_ops = {
345 .get_brightness = bl_get_brightness,
346 .update_status = bl_update_status,
347};
348
349
350/* Wireless interface */
351static int compal_rfkill_set(void *data, bool blocked)
352{
353 unsigned long radio = (unsigned long) data;
354 u8 result = ec_read_u8(WIRELESS_ADDR);
355 u8 value;
356
357 if (!blocked)
358 value = (u8) (result | radio);
359 else
360 value = (u8) (result & ~radio);
361 ec_write(WIRELESS_ADDR, value);
362
363 return 0;
364}
365
366static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
367{
368 u8 result = ec_read_u8(WIRELESS_ADDR);
369 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
370 rfkill_set_hw_state(rfkill, hw_blocked);
371}
372
373static const struct rfkill_ops compal_rfkill_ops = {
374 .poll = compal_rfkill_poll,
375 .set_block = compal_rfkill_set,
376};
377
378
379/* Wake_up interface */
380#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
381static ssize_t NAME##_show(struct device *dev, \
382 struct device_attribute *attr, char *buf) \
383{ \
384 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
385} \
386static ssize_t NAME##_store(struct device *dev, \
387 struct device_attribute *attr, const char *buf, size_t count) \
388{ \
389 int state; \
390 u8 old_val = ec_read_u8(ADDR); \
391 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
392 return -EINVAL; \
393 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
394 return count; \
395}
396
397SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
398SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
399SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
400SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
401SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
402SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
403
404/* Fan control interface */
405static ssize_t pwm_enable_show(struct device *dev,
406 struct device_attribute *attr, char *buf)
407{
408 struct compal_data *data = dev_get_drvdata(dev);
409 return sprintf(buf, "%d\n", data->pwm_enable);
410}
411
412static ssize_t pwm_enable_store(struct device *dev,
413 struct device_attribute *attr, const char *buf, size_t count)
414{
415 struct compal_data *data = dev_get_drvdata(dev);
416 long val;
417 int err;
418
419 err = kstrtol(buf, 10, &val);
420 if (err)
421 return err;
422 if (val < 0)
423 return -EINVAL;
424
425 data->pwm_enable = val;
426
427 switch (val) {
428 case 0: /* Full speed */
429 pwm_enable_control();
430 set_pwm(255);
431 break;
432 case 1: /* As set by pwm1 */
433 pwm_enable_control();
434 set_pwm(data->curr_pwm);
435 break;
436 default: /* Control by motherboard */
437 pwm_disable_control();
438 break;
439 }
440
441 return count;
442}
443
444static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
445 char *buf)
446{
447 struct compal_data *data = dev_get_drvdata(dev);
448 return sprintf(buf, "%hhu\n", data->curr_pwm);
449}
450
451static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
452 const char *buf, size_t count)
453{
454 struct compal_data *data = dev_get_drvdata(dev);
455 long val;
456 int err;
457
458 err = kstrtol(buf, 10, &val);
459 if (err)
460 return err;
461 if (val < 0 || val > 255)
462 return -EINVAL;
463
464 data->curr_pwm = val;
465
466 if (data->pwm_enable != 1)
467 return count;
468 set_pwm(val);
469
470 return count;
471}
472
473static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
474 char *buf)
475{
476 return sprintf(buf, "%d\n", get_fan_rpm());
477}
478
479
480/* Temperature interface */
481#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
482static ssize_t temp_##POSTFIX(struct device *dev, \
483 struct device_attribute *attr, char *buf) \
484{ \
485 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
486} \
487static ssize_t label_##POSTFIX(struct device *dev, \
488 struct device_attribute *attr, char *buf) \
489{ \
490 return sprintf(buf, "%s\n", LABEL); \
491}
492
493/* Labels as in service guide */
494TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
495TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
496TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
497TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
498TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
499TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
500
501
502/* Power supply interface */
503static int bat_status(void)
504{
505 u8 status0 = ec_read_u8(BAT_STATUS0);
506 u8 status1 = ec_read_u8(BAT_STATUS1);
507
508 if (status0 & BAT_S0_CHARGING)
509 return POWER_SUPPLY_STATUS_CHARGING;
510 if (status0 & BAT_S0_DISCHARGE)
511 return POWER_SUPPLY_STATUS_DISCHARGING;
512 if (status1 & BAT_S1_FULL)
513 return POWER_SUPPLY_STATUS_FULL;
514 return POWER_SUPPLY_STATUS_NOT_CHARGING;
515}
516
517static int bat_health(void)
518{
519 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
520
521 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
522 return POWER_SUPPLY_HEALTH_OVERHEAT;
523 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
524 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
525 if (status & BAT_STOP_CHRG1_BAD_CELL)
526 return POWER_SUPPLY_HEALTH_DEAD;
527 if (status & BAT_STOP_CHRG1_COMM_FAIL)
528 return POWER_SUPPLY_HEALTH_UNKNOWN;
529 return POWER_SUPPLY_HEALTH_GOOD;
530}
531
532static int bat_is_present(void)
533{
534 u8 status = ec_read_u8(BAT_STATUS2);
535 return ((status & BAT_S1_EXISTS) != 0);
536}
537
538static int bat_technology(void)
539{
540 u8 status = ec_read_u8(BAT_STATUS1);
541
542 if (status & BAT_S1_LiION_OR_NiMH)
543 return POWER_SUPPLY_TECHNOLOGY_LION;
544 return POWER_SUPPLY_TECHNOLOGY_NiMH;
545}
546
547static int bat_capacity_level(void)
548{
549 u8 status0 = ec_read_u8(BAT_STATUS0);
550 u8 status1 = ec_read_u8(BAT_STATUS1);
551 u8 status2 = ec_read_u8(BAT_STATUS2);
552
553 if (status0 & BAT_S0_DISCHRG_CRITICAL
554 || status1 & BAT_S1_EMPTY
555 || status2 & BAT_S2_LOW_LOW)
556 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
557 if (status0 & BAT_S0_LOW)
558 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
559 if (status1 & BAT_S1_FULL)
560 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
561 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
562}
563
564static int bat_get_property(struct power_supply *psy,
565 enum power_supply_property psp,
566 union power_supply_propval *val)
567{
568 struct compal_data *data;
569 data = container_of(psy, struct compal_data, psy);
570
571 switch (psp) {
572 case POWER_SUPPLY_PROP_STATUS:
573 val->intval = bat_status();
574 break;
575 case POWER_SUPPLY_PROP_HEALTH:
576 val->intval = bat_health();
577 break;
578 case POWER_SUPPLY_PROP_PRESENT:
579 val->intval = bat_is_present();
580 break;
581 case POWER_SUPPLY_PROP_TECHNOLOGY:
582 val->intval = bat_technology();
583 break;
584 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
585 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
586 break;
587 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
588 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
589 break;
590 case POWER_SUPPLY_PROP_CURRENT_NOW:
591 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
592 break;
593 case POWER_SUPPLY_PROP_CURRENT_AVG:
594 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
595 break;
596 case POWER_SUPPLY_PROP_POWER_NOW:
597 val->intval = ec_read_u8(BAT_POWER) * 1000000;
598 break;
599 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
600 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
601 break;
602 case POWER_SUPPLY_PROP_CHARGE_NOW:
603 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
604 break;
605 case POWER_SUPPLY_PROP_CAPACITY:
606 val->intval = ec_read_u8(BAT_CAPACITY);
607 break;
608 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
609 val->intval = bat_capacity_level();
610 break;
611 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
612 * the number of degrees, whereas BAT_TEMP is somewhat more
613 * complicated. It looks like this is a negative nember with a
614 * 100/256 divider and an offset of 222. Both were determined
615 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
616 case POWER_SUPPLY_PROP_TEMP:
617 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
618 break;
619 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
620 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
621 break;
622 /* Neither the model name nor manufacturer name work for me. */
623 case POWER_SUPPLY_PROP_MODEL_NAME:
624 val->strval = data->bat_model_name;
625 break;
626 case POWER_SUPPLY_PROP_MANUFACTURER:
627 val->strval = data->bat_manufacturer_name;
628 break;
629 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
630 val->strval = data->bat_serial_number;
631 break;
632 default:
633 break;
634 }
635 return 0;
636}
637
638
639
640
641
642/* ============== */
643/* Driver Globals */
644/* ============== */
645static DEVICE_ATTR(wake_up_pme,
646 0644, wake_up_pme_show, wake_up_pme_store);
647static DEVICE_ATTR(wake_up_modem,
648 0644, wake_up_modem_show, wake_up_modem_store);
649static DEVICE_ATTR(wake_up_lan,
650 0644, wake_up_lan_show, wake_up_lan_store);
651static DEVICE_ATTR(wake_up_wlan,
652 0644, wake_up_wlan_show, wake_up_wlan_store);
653static DEVICE_ATTR(wake_up_key,
654 0644, wake_up_key_show, wake_up_key_store);
655static DEVICE_ATTR(wake_up_mouse,
656 0644, wake_up_mouse_show, wake_up_mouse_store);
657
658static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
659static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
660static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
661static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
662static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
663static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
664static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
665static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
666static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
667static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
668static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
669static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
670static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
671static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
672static DEVICE_ATTR(pwm1_enable,
673 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
674
675static struct attribute *compal_platform_attrs[] = {
676 &dev_attr_wake_up_pme.attr,
677 &dev_attr_wake_up_modem.attr,
678 &dev_attr_wake_up_lan.attr,
679 &dev_attr_wake_up_wlan.attr,
680 &dev_attr_wake_up_key.attr,
681 &dev_attr_wake_up_mouse.attr,
682 NULL
683};
684static struct attribute_group compal_platform_attr_group = {
685 .attrs = compal_platform_attrs
686};
687
688static struct attribute *compal_hwmon_attrs[] = {
689 &dev_attr_pwm1_enable.attr,
690 &dev_attr_pwm1.attr,
691 &dev_attr_fan1_input.attr,
692 &dev_attr_temp1_input.attr,
693 &dev_attr_temp2_input.attr,
694 &dev_attr_temp3_input.attr,
695 &dev_attr_temp4_input.attr,
696 &dev_attr_temp5_input.attr,
697 &dev_attr_temp6_input.attr,
698 &dev_attr_temp1_label.attr,
699 &dev_attr_temp2_label.attr,
700 &dev_attr_temp3_label.attr,
701 &dev_attr_temp4_label.attr,
702 &dev_attr_temp5_label.attr,
703 &dev_attr_temp6_label.attr,
704 NULL
705};
706ATTRIBUTE_GROUPS(compal_hwmon);
707
708static int compal_probe(struct platform_device *);
709static int compal_remove(struct platform_device *);
710static struct platform_driver compal_driver = {
711 .driver = {
712 .name = DRIVER_NAME,
713 .owner = THIS_MODULE,
714 },
715 .probe = compal_probe,
716 .remove = compal_remove,
717};
718
719static enum power_supply_property compal_bat_properties[] = {
720 POWER_SUPPLY_PROP_STATUS,
721 POWER_SUPPLY_PROP_HEALTH,
722 POWER_SUPPLY_PROP_PRESENT,
723 POWER_SUPPLY_PROP_TECHNOLOGY,
724 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
725 POWER_SUPPLY_PROP_VOLTAGE_NOW,
726 POWER_SUPPLY_PROP_CURRENT_NOW,
727 POWER_SUPPLY_PROP_CURRENT_AVG,
728 POWER_SUPPLY_PROP_POWER_NOW,
729 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
730 POWER_SUPPLY_PROP_CHARGE_NOW,
731 POWER_SUPPLY_PROP_CAPACITY,
732 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
733 POWER_SUPPLY_PROP_TEMP,
734 POWER_SUPPLY_PROP_TEMP_AMBIENT,
735 POWER_SUPPLY_PROP_MODEL_NAME,
736 POWER_SUPPLY_PROP_MANUFACTURER,
737 POWER_SUPPLY_PROP_SERIAL_NUMBER,
738};
739
740static struct backlight_device *compalbl_device;
741
742static struct platform_device *compal_device;
743
744static struct rfkill *wifi_rfkill;
745static struct rfkill *bt_rfkill;
746
747
748
749
750
751/* =================================== */
752/* Initialization & clean-up functions */
753/* =================================== */
754
755static int dmi_check_cb(const struct dmi_system_id *id)
756{
757 pr_info("Identified laptop model '%s'\n", id->ident);
758 extra_features = false;
759 return 1;
760}
761
762static int dmi_check_cb_extra(const struct dmi_system_id *id)
763{
764 pr_info("Identified laptop model '%s', enabling extra features\n",
765 id->ident);
766 extra_features = true;
767 return 1;
768}
769
770static struct dmi_system_id __initdata compal_dmi_table[] = {
771 {
772 .ident = "FL90/IFL90",
773 .matches = {
774 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
775 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
776 },
777 .callback = dmi_check_cb
778 },
779 {
780 .ident = "FL90/IFL90",
781 .matches = {
782 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
783 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
784 },
785 .callback = dmi_check_cb
786 },
787 {
788 .ident = "FL91/IFL91",
789 .matches = {
790 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
791 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
792 },
793 .callback = dmi_check_cb
794 },
795 {
796 .ident = "FL92/JFL92",
797 .matches = {
798 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
799 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
800 },
801 .callback = dmi_check_cb
802 },
803 {
804 .ident = "FT00/IFT00",
805 .matches = {
806 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808 },
809 .callback = dmi_check_cb
810 },
811 {
812 .ident = "Dell Mini 9",
813 .matches = {
814 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
815 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
816 },
817 .callback = dmi_check_cb
818 },
819 {
820 .ident = "Dell Mini 10",
821 .matches = {
822 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
823 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
824 },
825 .callback = dmi_check_cb
826 },
827 {
828 .ident = "Dell Mini 10v",
829 .matches = {
830 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
831 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
832 },
833 .callback = dmi_check_cb
834 },
835 {
836 .ident = "Dell Mini 1012",
837 .matches = {
838 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
839 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
840 },
841 .callback = dmi_check_cb
842 },
843 {
844 .ident = "Dell Inspiron 11z",
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
848 },
849 .callback = dmi_check_cb
850 },
851 {
852 .ident = "Dell Mini 12",
853 .matches = {
854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
856 },
857 .callback = dmi_check_cb
858 },
859 {
860 .ident = "JHL90",
861 .matches = {
862 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
863 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
864 },
865 .callback = dmi_check_cb_extra
866 },
867 {
868 .ident = "KHLB2",
869 .matches = {
870 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
871 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
872 },
873 .callback = dmi_check_cb_extra
874 },
875 { }
876};
877MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
878
879static void initialize_power_supply_data(struct compal_data *data)
880{
881 data->psy.name = DRIVER_NAME;
882 data->psy.type = POWER_SUPPLY_TYPE_BATTERY;
883 data->psy.properties = compal_bat_properties;
884 data->psy.num_properties = ARRAY_SIZE(compal_bat_properties);
885 data->psy.get_property = bat_get_property;
886
887 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
888 data->bat_manufacturer_name,
889 BAT_MANUFACTURER_NAME_LEN);
890 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
891
892 ec_read_sequence(BAT_MODEL_NAME_ADDR,
893 data->bat_model_name,
894 BAT_MODEL_NAME_LEN);
895 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
896
897 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
898 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
899}
900
901static void initialize_fan_control_data(struct compal_data *data)
902{
903 data->pwm_enable = 2; /* Keep motherboard in control for now */
904 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
905 if we take over... */
906}
907
908static int setup_rfkill(void)
909{
910 int ret;
911
912 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
913 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
914 (void *) WIRELESS_WLAN);
915 if (!wifi_rfkill)
916 return -ENOMEM;
917
918 ret = rfkill_register(wifi_rfkill);
919 if (ret)
920 goto err_wifi;
921
922 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
923 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
924 (void *) WIRELESS_BT);
925 if (!bt_rfkill) {
926 ret = -ENOMEM;
927 goto err_allocate_bt;
928 }
929 ret = rfkill_register(bt_rfkill);
930 if (ret)
931 goto err_register_bt;
932
933 return 0;
934
935err_register_bt:
936 rfkill_destroy(bt_rfkill);
937
938err_allocate_bt:
939 rfkill_unregister(wifi_rfkill);
940
941err_wifi:
942 rfkill_destroy(wifi_rfkill);
943
944 return ret;
945}
946
947static int __init compal_init(void)
948{
949 int ret;
950
951 if (acpi_disabled) {
952 pr_err("ACPI needs to be enabled for this driver to work!\n");
953 return -ENODEV;
954 }
955
956 if (!force && !dmi_check_system(compal_dmi_table)) {
957 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
958 return -ENODEV;
959 }
960
961 if (!acpi_video_backlight_support()) {
962 struct backlight_properties props;
963 memset(&props, 0, sizeof(struct backlight_properties));
964 props.type = BACKLIGHT_PLATFORM;
965 props.max_brightness = BACKLIGHT_LEVEL_MAX;
966 compalbl_device = backlight_device_register(DRIVER_NAME,
967 NULL, NULL,
968 &compalbl_ops,
969 &props);
970 if (IS_ERR(compalbl_device))
971 return PTR_ERR(compalbl_device);
972 }
973
974 ret = platform_driver_register(&compal_driver);
975 if (ret)
976 goto err_backlight;
977
978 compal_device = platform_device_alloc(DRIVER_NAME, -1);
979 if (!compal_device) {
980 ret = -ENOMEM;
981 goto err_platform_driver;
982 }
983
984 ret = platform_device_add(compal_device); /* This calls compal_probe */
985 if (ret)
986 goto err_platform_device;
987
988 ret = setup_rfkill();
989 if (ret)
990 goto err_rfkill;
991
992 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
993 return 0;
994
995err_rfkill:
996 platform_device_del(compal_device);
997
998err_platform_device:
999 platform_device_put(compal_device);
1000
1001err_platform_driver:
1002 platform_driver_unregister(&compal_driver);
1003
1004err_backlight:
1005 backlight_device_unregister(compalbl_device);
1006
1007 return ret;
1008}
1009
1010static int compal_probe(struct platform_device *pdev)
1011{
1012 int err;
1013 struct compal_data *data;
1014 struct device *hwmon_dev;
1015
1016 if (!extra_features)
1017 return 0;
1018
1019 /* Fan control */
1020 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
1021 if (!data)
1022 return -ENOMEM;
1023
1024 initialize_fan_control_data(data);
1025
1026 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
1027 if (err)
1028 return err;
1029
1030 hwmon_dev = hwmon_device_register_with_groups(&pdev->dev,
1031 DRIVER_NAME, data,
1032 compal_hwmon_groups);
1033 if (IS_ERR(hwmon_dev)) {
1034 err = PTR_ERR(hwmon_dev);
1035 goto remove;
1036 }
1037
1038 /* Power supply */
1039 initialize_power_supply_data(data);
1040 power_supply_register(&compal_device->dev, &data->psy);
1041
1042 platform_set_drvdata(pdev, data);
1043
1044 return 0;
1045
1046remove:
1047 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1048 return err;
1049}
1050
1051static void __exit compal_cleanup(void)
1052{
1053 platform_device_unregister(compal_device);
1054 platform_driver_unregister(&compal_driver);
1055 backlight_device_unregister(compalbl_device);
1056 rfkill_unregister(wifi_rfkill);
1057 rfkill_unregister(bt_rfkill);
1058 rfkill_destroy(wifi_rfkill);
1059 rfkill_destroy(bt_rfkill);
1060
1061 pr_info("Driver unloaded\n");
1062}
1063
1064static int compal_remove(struct platform_device *pdev)
1065{
1066 struct compal_data *data;
1067
1068 if (!extra_features)
1069 return 0;
1070
1071 pr_info("Unloading: resetting fan control to motherboard\n");
1072 pwm_disable_control();
1073
1074 data = platform_get_drvdata(pdev);
1075 power_supply_unregister(&data->psy);
1076
1077 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1078
1079 return 0;
1080}
1081
1082
1083module_init(compal_init);
1084module_exit(compal_cleanup);
1085
1086MODULE_AUTHOR("Cezary Jackiewicz");
1087MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1088MODULE_DESCRIPTION("Compal Laptop Support");
1089MODULE_VERSION(DRIVER_VERSION);
1090MODULE_LICENSE("GPL");