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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// SPDX-License-Identifier: GPL-2.0-or-later
2/*-*-linux-c-*-*/
3
4/*
5 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
6
7 based on MSI driver
8
9 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
10
11 */
12
13/*
14 * compal-laptop.c - Compal laptop support.
15 *
16 * This driver exports a few files in /sys/devices/platform/compal-laptop/:
17 * wake_up_XXX Whether or not we listen to such wake up events (rw)
18 *
19 * In addition to these platform device attributes the driver
20 * registers itself in the Linux backlight control, power_supply, rfkill
21 * and hwmon subsystem and is available to userspace under:
22 *
23 * /sys/class/backlight/compal-laptop/
24 * /sys/class/power_supply/compal-laptop/
25 * /sys/class/rfkill/rfkillX/
26 * /sys/class/hwmon/hwmonX/
27 *
28 * Notes on the power_supply battery interface:
29 * - the "minimum" design voltage is *the* design voltage
30 * - the ambient temperature is the average battery temperature
31 * and the value is an educated guess (see commented code below)
32 *
33 *
34 * This driver might work on other laptops produced by Compal. If you
35 * want to try it you can pass force=1 as argument to the module which
36 * will force it to load even when the DMI data doesn't identify the
37 * laptop as compatible.
38 *
39 * Lots of data available at:
40 * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/
41 * JHL90%20service%20manual-Final-0725.pdf
42 *
43 *
44 *
45 * Support for the Compal JHL90 added by Roald Frederickx
46 * (roald.frederickx@gmail.com):
47 * Driver got large revision. Added functionalities: backlight
48 * power, wake_on_XXX, a hwmon and power_supply interface.
49 *
50 * In case this gets merged into the kernel source: I want to dedicate this
51 * to Kasper Meerts, the awesome guy who showed me Linux and C!
52 */
53
54/* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
55 * only enabled on a JHL90 board until it is verified that they work on the
56 * other boards too. See the extra_features variable. */
57
58#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
59
60#include <linux/module.h>
61#include <linux/kernel.h>
62#include <linux/init.h>
63#include <linux/acpi.h>
64#include <linux/dmi.h>
65#include <linux/backlight.h>
66#include <linux/platform_device.h>
67#include <linux/rfkill.h>
68#include <linux/hwmon.h>
69#include <linux/hwmon-sysfs.h>
70#include <linux/power_supply.h>
71#include <linux/sysfs.h>
72#include <linux/fb.h>
73#include <acpi/video.h>
74
75/* ======= */
76/* Defines */
77/* ======= */
78#define DRIVER_NAME "compal-laptop"
79#define DRIVER_VERSION "0.2.7"
80
81#define BACKLIGHT_LEVEL_ADDR 0xB9
82#define BACKLIGHT_LEVEL_MAX 7
83#define BACKLIGHT_STATE_ADDR 0x59
84#define BACKLIGHT_STATE_ON_DATA 0xE1
85#define BACKLIGHT_STATE_OFF_DATA 0xE2
86
87#define WAKE_UP_ADDR 0xA4
88#define WAKE_UP_PME (1 << 0)
89#define WAKE_UP_MODEM (1 << 1)
90#define WAKE_UP_LAN (1 << 2)
91#define WAKE_UP_WLAN (1 << 4)
92#define WAKE_UP_KEY (1 << 6)
93#define WAKE_UP_MOUSE (1 << 7)
94
95#define WIRELESS_ADDR 0xBB
96#define WIRELESS_WLAN (1 << 0)
97#define WIRELESS_BT (1 << 1)
98#define WIRELESS_WLAN_EXISTS (1 << 2)
99#define WIRELESS_BT_EXISTS (1 << 3)
100#define WIRELESS_KILLSWITCH (1 << 4)
101
102#define PWM_ADDRESS 0x46
103#define PWM_DISABLE_ADDR 0x59
104#define PWM_DISABLE_DATA 0xA5
105#define PWM_ENABLE_ADDR 0x59
106#define PWM_ENABLE_DATA 0xA8
107
108#define FAN_ADDRESS 0x46
109#define FAN_DATA 0x81
110#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
111#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
112#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
113
114#define TEMP_CPU 0xB0
115#define TEMP_CPU_LOCAL 0xB1
116#define TEMP_CPU_DTS 0xB5
117#define TEMP_NORTHBRIDGE 0xB6
118#define TEMP_VGA 0xB4
119#define TEMP_SKIN 0xB2
120
121#define BAT_MANUFACTURER_NAME_ADDR 0x10
122#define BAT_MANUFACTURER_NAME_LEN 9
123#define BAT_MODEL_NAME_ADDR 0x19
124#define BAT_MODEL_NAME_LEN 6
125#define BAT_SERIAL_NUMBER_ADDR 0xC4
126#define BAT_SERIAL_NUMBER_LEN 5
127#define BAT_CHARGE_NOW 0xC2
128#define BAT_CHARGE_DESIGN 0xCA
129#define BAT_VOLTAGE_NOW 0xC6
130#define BAT_VOLTAGE_DESIGN 0xC8
131#define BAT_CURRENT_NOW 0xD0
132#define BAT_CURRENT_AVG 0xD2
133#define BAT_POWER 0xD4
134#define BAT_CAPACITY 0xCE
135#define BAT_TEMP 0xD6
136#define BAT_TEMP_AVG 0xD7
137#define BAT_STATUS0 0xC1
138#define BAT_STATUS1 0xF0
139#define BAT_STATUS2 0xF1
140#define BAT_STOP_CHARGE1 0xF2
141#define BAT_STOP_CHARGE2 0xF3
142#define BAT_CHARGE_LIMIT 0x03
143#define BAT_CHARGE_LIMIT_MAX 100
144
145#define BAT_S0_DISCHARGE (1 << 0)
146#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
147#define BAT_S0_LOW (1 << 3)
148#define BAT_S0_CHARGING (1 << 1)
149#define BAT_S0_AC (1 << 7)
150#define BAT_S1_EXISTS (1 << 0)
151#define BAT_S1_FULL (1 << 1)
152#define BAT_S1_EMPTY (1 << 2)
153#define BAT_S1_LiION_OR_NiMH (1 << 7)
154#define BAT_S2_LOW_LOW (1 << 0)
155#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
156#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
157#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
158#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
159
160
161/* ======= */
162/* Structs */
163/* ======= */
164struct compal_data{
165 /* Fan control */
166 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
167 unsigned char curr_pwm;
168
169 /* Power supply */
170 struct power_supply *psy;
171 struct power_supply_info psy_info;
172 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
173 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
174 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
175};
176
177
178/* =============== */
179/* General globals */
180/* =============== */
181static bool force;
182module_param(force, bool, 0);
183MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
184
185/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
186 * only gets enabled on a JHL90 board. Might work with the others too */
187static bool extra_features;
188
189/* Nasty stuff. For some reason the fan control is very un-linear. I've
190 * come up with these values by looping through the possible inputs and
191 * watching the output of address 0x4F (do an ec_transaction writing 0x33
192 * into 0x4F and read a few bytes from the output, like so:
193 * u8 writeData = 0x33;
194 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
195 * That address is labeled "fan1 table information" in the service manual.
196 * It should be clear which value in 'buffer' changes). This seems to be
197 * related to fan speed. It isn't a proper 'realtime' fan speed value
198 * though, because physically stopping or speeding up the fan doesn't
199 * change it. It might be the average voltage or current of the pwm output.
200 * Nevertheless, it is more fine-grained than the actual RPM reading */
201static const unsigned char pwm_lookup_table[256] = {
202 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
203 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
204 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
205 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
206 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
207 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
208 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
209 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
210 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
211 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
212 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
213 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
214 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
215 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
216 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
217 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
218 187, 187, 193, 50
219};
220
221
222
223
224/* ========================= */
225/* Hardware access functions */
226/* ========================= */
227/* General access */
228static u8 ec_read_u8(u8 addr)
229{
230 u8 value = 0;
231 ec_read(addr, &value);
232 return value;
233}
234
235static s8 ec_read_s8(u8 addr)
236{
237 return (s8)ec_read_u8(addr);
238}
239
240static u16 ec_read_u16(u8 addr)
241{
242 int hi, lo;
243 lo = ec_read_u8(addr);
244 hi = ec_read_u8(addr + 1);
245 return (hi << 8) + lo;
246}
247
248static s16 ec_read_s16(u8 addr)
249{
250 return (s16) ec_read_u16(addr);
251}
252
253static void ec_read_sequence(u8 addr, u8 *buf, int len)
254{
255 int i;
256 for (i = 0; i < len; i++)
257 ec_read(addr + i, buf + i);
258}
259
260
261/* Backlight access */
262static int set_backlight_level(int level)
263{
264 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
265 return -EINVAL;
266
267 ec_write(BACKLIGHT_LEVEL_ADDR, level);
268
269 return 0;
270}
271
272static int get_backlight_level(void)
273{
274 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
275}
276
277static void set_backlight_state(bool on)
278{
279 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
280 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
281}
282
283
284/* Fan control access */
285static void pwm_enable_control(void)
286{
287 unsigned char writeData = PWM_ENABLE_DATA;
288 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
289}
290
291static void pwm_disable_control(void)
292{
293 unsigned char writeData = PWM_DISABLE_DATA;
294 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
295}
296
297static void set_pwm(int pwm)
298{
299 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
300}
301
302static int get_fan_rpm(void)
303{
304 u8 value, data = FAN_DATA;
305 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
306 return 100 * (int)value;
307}
308
309
310
311
312/* =================== */
313/* Interface functions */
314/* =================== */
315
316/* Backlight interface */
317static int bl_get_brightness(struct backlight_device *b)
318{
319 return get_backlight_level();
320}
321
322static int bl_update_status(struct backlight_device *b)
323{
324 int ret = set_backlight_level(b->props.brightness);
325 if (ret)
326 return ret;
327
328 set_backlight_state(!backlight_is_blank(b));
329 return 0;
330}
331
332static const struct backlight_ops compalbl_ops = {
333 .get_brightness = bl_get_brightness,
334 .update_status = bl_update_status,
335};
336
337
338/* Wireless interface */
339static int compal_rfkill_set(void *data, bool blocked)
340{
341 unsigned long radio = (unsigned long) data;
342 u8 result = ec_read_u8(WIRELESS_ADDR);
343 u8 value;
344
345 if (!blocked)
346 value = (u8) (result | radio);
347 else
348 value = (u8) (result & ~radio);
349 ec_write(WIRELESS_ADDR, value);
350
351 return 0;
352}
353
354static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
355{
356 u8 result = ec_read_u8(WIRELESS_ADDR);
357 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
358 rfkill_set_hw_state(rfkill, hw_blocked);
359}
360
361static const struct rfkill_ops compal_rfkill_ops = {
362 .poll = compal_rfkill_poll,
363 .set_block = compal_rfkill_set,
364};
365
366
367/* Wake_up interface */
368#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
369static ssize_t NAME##_show(struct device *dev, \
370 struct device_attribute *attr, char *buf) \
371{ \
372 return sysfs_emit(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
373} \
374static ssize_t NAME##_store(struct device *dev, \
375 struct device_attribute *attr, const char *buf, size_t count) \
376{ \
377 int state; \
378 u8 old_val = ec_read_u8(ADDR); \
379 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
380 return -EINVAL; \
381 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
382 return count; \
383}
384
385SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
386SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
387SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
388SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
389SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
390SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
391
392/* Fan control interface */
393static ssize_t pwm_enable_show(struct device *dev,
394 struct device_attribute *attr, char *buf)
395{
396 struct compal_data *data = dev_get_drvdata(dev);
397 return sysfs_emit(buf, "%d\n", data->pwm_enable);
398}
399
400static ssize_t pwm_enable_store(struct device *dev,
401 struct device_attribute *attr, const char *buf, size_t count)
402{
403 struct compal_data *data = dev_get_drvdata(dev);
404 long val;
405 int err;
406
407 err = kstrtol(buf, 10, &val);
408 if (err)
409 return err;
410 if (val < 0)
411 return -EINVAL;
412
413 data->pwm_enable = val;
414
415 switch (val) {
416 case 0: /* Full speed */
417 pwm_enable_control();
418 set_pwm(255);
419 break;
420 case 1: /* As set by pwm1 */
421 pwm_enable_control();
422 set_pwm(data->curr_pwm);
423 break;
424 default: /* Control by motherboard */
425 pwm_disable_control();
426 break;
427 }
428
429 return count;
430}
431
432static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
433 char *buf)
434{
435 struct compal_data *data = dev_get_drvdata(dev);
436 return sysfs_emit(buf, "%hhu\n", data->curr_pwm);
437}
438
439static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
440 const char *buf, size_t count)
441{
442 struct compal_data *data = dev_get_drvdata(dev);
443 long val;
444 int err;
445
446 err = kstrtol(buf, 10, &val);
447 if (err)
448 return err;
449 if (val < 0 || val > 255)
450 return -EINVAL;
451
452 data->curr_pwm = val;
453
454 if (data->pwm_enable != 1)
455 return count;
456 set_pwm(val);
457
458 return count;
459}
460
461static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
462 char *buf)
463{
464 return sysfs_emit(buf, "%d\n", get_fan_rpm());
465}
466
467
468/* Temperature interface */
469#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
470static ssize_t temp_##POSTFIX(struct device *dev, \
471 struct device_attribute *attr, char *buf) \
472{ \
473 return sysfs_emit(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
474} \
475static ssize_t label_##POSTFIX(struct device *dev, \
476 struct device_attribute *attr, char *buf) \
477{ \
478 return sysfs_emit(buf, "%s\n", LABEL); \
479}
480
481/* Labels as in service guide */
482TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
483TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
484TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
485TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
486TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
487TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
488
489
490/* Power supply interface */
491static int bat_status(void)
492{
493 u8 status0 = ec_read_u8(BAT_STATUS0);
494 u8 status1 = ec_read_u8(BAT_STATUS1);
495
496 if (status0 & BAT_S0_CHARGING)
497 return POWER_SUPPLY_STATUS_CHARGING;
498 if (status0 & BAT_S0_DISCHARGE)
499 return POWER_SUPPLY_STATUS_DISCHARGING;
500 if (status1 & BAT_S1_FULL)
501 return POWER_SUPPLY_STATUS_FULL;
502 return POWER_SUPPLY_STATUS_NOT_CHARGING;
503}
504
505static int bat_health(void)
506{
507 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
508
509 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
510 return POWER_SUPPLY_HEALTH_OVERHEAT;
511 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
512 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
513 if (status & BAT_STOP_CHRG1_BAD_CELL)
514 return POWER_SUPPLY_HEALTH_DEAD;
515 if (status & BAT_STOP_CHRG1_COMM_FAIL)
516 return POWER_SUPPLY_HEALTH_UNKNOWN;
517 return POWER_SUPPLY_HEALTH_GOOD;
518}
519
520static int bat_is_present(void)
521{
522 u8 status = ec_read_u8(BAT_STATUS2);
523 return ((status & BAT_S1_EXISTS) != 0);
524}
525
526static int bat_technology(void)
527{
528 u8 status = ec_read_u8(BAT_STATUS1);
529
530 if (status & BAT_S1_LiION_OR_NiMH)
531 return POWER_SUPPLY_TECHNOLOGY_LION;
532 return POWER_SUPPLY_TECHNOLOGY_NiMH;
533}
534
535static int bat_capacity_level(void)
536{
537 u8 status0 = ec_read_u8(BAT_STATUS0);
538 u8 status1 = ec_read_u8(BAT_STATUS1);
539 u8 status2 = ec_read_u8(BAT_STATUS2);
540
541 if (status0 & BAT_S0_DISCHRG_CRITICAL
542 || status1 & BAT_S1_EMPTY
543 || status2 & BAT_S2_LOW_LOW)
544 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
545 if (status0 & BAT_S0_LOW)
546 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
547 if (status1 & BAT_S1_FULL)
548 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
549 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
550}
551
552static int bat_get_property(struct power_supply *psy,
553 enum power_supply_property psp,
554 union power_supply_propval *val)
555{
556 struct compal_data *data = power_supply_get_drvdata(psy);
557
558 switch (psp) {
559 case POWER_SUPPLY_PROP_STATUS:
560 val->intval = bat_status();
561 break;
562 case POWER_SUPPLY_PROP_HEALTH:
563 val->intval = bat_health();
564 break;
565 case POWER_SUPPLY_PROP_PRESENT:
566 val->intval = bat_is_present();
567 break;
568 case POWER_SUPPLY_PROP_TECHNOLOGY:
569 val->intval = bat_technology();
570 break;
571 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
572 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
573 break;
574 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
575 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
576 break;
577 case POWER_SUPPLY_PROP_CURRENT_NOW:
578 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
579 break;
580 case POWER_SUPPLY_PROP_CURRENT_AVG:
581 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
582 break;
583 case POWER_SUPPLY_PROP_POWER_NOW:
584 val->intval = ec_read_u8(BAT_POWER) * 1000000;
585 break;
586 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
587 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
588 break;
589 case POWER_SUPPLY_PROP_CHARGE_NOW:
590 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
591 break;
592 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
593 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
594 break;
595 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
596 val->intval = BAT_CHARGE_LIMIT_MAX;
597 break;
598 case POWER_SUPPLY_PROP_CAPACITY:
599 val->intval = ec_read_u8(BAT_CAPACITY);
600 break;
601 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
602 val->intval = bat_capacity_level();
603 break;
604 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
605 * the number of degrees, whereas BAT_TEMP is somewhat more
606 * complicated. It looks like this is a negative nember with a
607 * 100/256 divider and an offset of 222. Both were determined
608 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
609 case POWER_SUPPLY_PROP_TEMP:
610 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
611 break;
612 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
613 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
614 break;
615 /* Neither the model name nor manufacturer name work for me. */
616 case POWER_SUPPLY_PROP_MODEL_NAME:
617 val->strval = data->bat_model_name;
618 break;
619 case POWER_SUPPLY_PROP_MANUFACTURER:
620 val->strval = data->bat_manufacturer_name;
621 break;
622 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
623 val->strval = data->bat_serial_number;
624 break;
625 default:
626 break;
627 }
628 return 0;
629}
630
631static int bat_set_property(struct power_supply *psy,
632 enum power_supply_property psp,
633 const union power_supply_propval *val)
634{
635 int level;
636
637 switch (psp) {
638 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
639 level = val->intval;
640 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
641 return -EINVAL;
642 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
643 return -EIO;
644 break;
645 default:
646 break;
647 }
648 return 0;
649}
650
651static int bat_writeable_property(struct power_supply *psy,
652 enum power_supply_property psp)
653{
654 switch (psp) {
655 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
656 return 1;
657 default:
658 return 0;
659 }
660}
661
662
663
664
665/* ============== */
666/* Driver Globals */
667/* ============== */
668static DEVICE_ATTR_RW(wake_up_pme);
669static DEVICE_ATTR_RW(wake_up_modem);
670static DEVICE_ATTR_RW(wake_up_lan);
671static DEVICE_ATTR_RW(wake_up_wlan);
672static DEVICE_ATTR_RW(wake_up_key);
673static DEVICE_ATTR_RW(wake_up_mouse);
674
675static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
676static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
677static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
678static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
679static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
680static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
681static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
682static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
683static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
684static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
685static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
686static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
687static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
688static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
689static DEVICE_ATTR(pwm1_enable,
690 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
691
692static struct attribute *compal_platform_attrs[] = {
693 &dev_attr_wake_up_pme.attr,
694 &dev_attr_wake_up_modem.attr,
695 &dev_attr_wake_up_lan.attr,
696 &dev_attr_wake_up_wlan.attr,
697 &dev_attr_wake_up_key.attr,
698 &dev_attr_wake_up_mouse.attr,
699 NULL
700};
701static const struct attribute_group compal_platform_attr_group = {
702 .attrs = compal_platform_attrs
703};
704
705static struct attribute *compal_hwmon_attrs[] = {
706 &dev_attr_pwm1_enable.attr,
707 &dev_attr_pwm1.attr,
708 &dev_attr_fan1_input.attr,
709 &dev_attr_temp1_input.attr,
710 &dev_attr_temp2_input.attr,
711 &dev_attr_temp3_input.attr,
712 &dev_attr_temp4_input.attr,
713 &dev_attr_temp5_input.attr,
714 &dev_attr_temp6_input.attr,
715 &dev_attr_temp1_label.attr,
716 &dev_attr_temp2_label.attr,
717 &dev_attr_temp3_label.attr,
718 &dev_attr_temp4_label.attr,
719 &dev_attr_temp5_label.attr,
720 &dev_attr_temp6_label.attr,
721 NULL
722};
723ATTRIBUTE_GROUPS(compal_hwmon);
724
725static enum power_supply_property compal_bat_properties[] = {
726 POWER_SUPPLY_PROP_STATUS,
727 POWER_SUPPLY_PROP_HEALTH,
728 POWER_SUPPLY_PROP_PRESENT,
729 POWER_SUPPLY_PROP_TECHNOLOGY,
730 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
731 POWER_SUPPLY_PROP_VOLTAGE_NOW,
732 POWER_SUPPLY_PROP_CURRENT_NOW,
733 POWER_SUPPLY_PROP_CURRENT_AVG,
734 POWER_SUPPLY_PROP_POWER_NOW,
735 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
736 POWER_SUPPLY_PROP_CHARGE_NOW,
737 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
738 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
739 POWER_SUPPLY_PROP_CAPACITY,
740 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
741 POWER_SUPPLY_PROP_TEMP,
742 POWER_SUPPLY_PROP_TEMP_AMBIENT,
743 POWER_SUPPLY_PROP_MODEL_NAME,
744 POWER_SUPPLY_PROP_MANUFACTURER,
745 POWER_SUPPLY_PROP_SERIAL_NUMBER,
746};
747
748static struct backlight_device *compalbl_device;
749
750static struct platform_device *compal_device;
751
752static struct rfkill *wifi_rfkill;
753static struct rfkill *bt_rfkill;
754
755
756
757
758
759/* =================================== */
760/* Initialization & clean-up functions */
761/* =================================== */
762
763static int dmi_check_cb(const struct dmi_system_id *id)
764{
765 pr_info("Identified laptop model '%s'\n", id->ident);
766 extra_features = false;
767 return 1;
768}
769
770static int dmi_check_cb_extra(const struct dmi_system_id *id)
771{
772 pr_info("Identified laptop model '%s', enabling extra features\n",
773 id->ident);
774 extra_features = true;
775 return 1;
776}
777
778static const struct dmi_system_id compal_dmi_table[] __initconst = {
779 {
780 .ident = "FL90/IFL90",
781 .matches = {
782 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
783 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
784 },
785 .callback = dmi_check_cb
786 },
787 {
788 .ident = "FL90/IFL90",
789 .matches = {
790 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
791 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
792 },
793 .callback = dmi_check_cb
794 },
795 {
796 .ident = "FL91/IFL91",
797 .matches = {
798 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
799 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
800 },
801 .callback = dmi_check_cb
802 },
803 {
804 .ident = "FL92/JFL92",
805 .matches = {
806 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808 },
809 .callback = dmi_check_cb
810 },
811 {
812 .ident = "FT00/IFT00",
813 .matches = {
814 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
815 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
816 },
817 .callback = dmi_check_cb
818 },
819 {
820 .ident = "Dell Mini 9",
821 .matches = {
822 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
823 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
824 },
825 .callback = dmi_check_cb
826 },
827 {
828 .ident = "Dell Mini 10",
829 .matches = {
830 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
831 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
832 },
833 .callback = dmi_check_cb
834 },
835 {
836 .ident = "Dell Mini 10v",
837 .matches = {
838 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
839 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
840 },
841 .callback = dmi_check_cb
842 },
843 {
844 .ident = "Dell Mini 1012",
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
848 },
849 .callback = dmi_check_cb
850 },
851 {
852 .ident = "Dell Inspiron 11z",
853 .matches = {
854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
856 },
857 .callback = dmi_check_cb
858 },
859 {
860 .ident = "Dell Mini 12",
861 .matches = {
862 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
863 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
864 },
865 .callback = dmi_check_cb
866 },
867 {
868 .ident = "JHL90",
869 .matches = {
870 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
871 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
872 },
873 .callback = dmi_check_cb_extra
874 },
875 {
876 .ident = "KHLB2",
877 .matches = {
878 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
879 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
880 },
881 .callback = dmi_check_cb_extra
882 },
883 { }
884};
885MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
886
887static const struct power_supply_desc psy_bat_desc = {
888 .name = DRIVER_NAME,
889 .type = POWER_SUPPLY_TYPE_BATTERY,
890 .properties = compal_bat_properties,
891 .num_properties = ARRAY_SIZE(compal_bat_properties),
892 .get_property = bat_get_property,
893 .set_property = bat_set_property,
894 .property_is_writeable = bat_writeable_property,
895};
896
897static void initialize_power_supply_data(struct compal_data *data)
898{
899 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
900 data->bat_manufacturer_name,
901 BAT_MANUFACTURER_NAME_LEN);
902 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
903
904 ec_read_sequence(BAT_MODEL_NAME_ADDR,
905 data->bat_model_name,
906 BAT_MODEL_NAME_LEN);
907 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
908
909 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
910 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
911}
912
913static void initialize_fan_control_data(struct compal_data *data)
914{
915 data->pwm_enable = 2; /* Keep motherboard in control for now */
916 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
917 if we take over... */
918}
919
920static int setup_rfkill(void)
921{
922 int ret;
923
924 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
925 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
926 (void *) WIRELESS_WLAN);
927 if (!wifi_rfkill)
928 return -ENOMEM;
929
930 ret = rfkill_register(wifi_rfkill);
931 if (ret)
932 goto err_wifi;
933
934 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
935 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
936 (void *) WIRELESS_BT);
937 if (!bt_rfkill) {
938 ret = -ENOMEM;
939 goto err_allocate_bt;
940 }
941 ret = rfkill_register(bt_rfkill);
942 if (ret)
943 goto err_register_bt;
944
945 return 0;
946
947err_register_bt:
948 rfkill_destroy(bt_rfkill);
949
950err_allocate_bt:
951 rfkill_unregister(wifi_rfkill);
952
953err_wifi:
954 rfkill_destroy(wifi_rfkill);
955
956 return ret;
957}
958
959static int compal_probe(struct platform_device *pdev)
960{
961 int err;
962 struct compal_data *data;
963 struct device *hwmon_dev;
964 struct power_supply_config psy_cfg = {};
965
966 if (!extra_features)
967 return 0;
968
969 /* Fan control */
970 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
971 if (!data)
972 return -ENOMEM;
973
974 initialize_fan_control_data(data);
975
976 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
977 if (err)
978 return err;
979
980 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
981 "compal", data,
982 compal_hwmon_groups);
983 if (IS_ERR(hwmon_dev)) {
984 err = PTR_ERR(hwmon_dev);
985 goto remove;
986 }
987
988 /* Power supply */
989 initialize_power_supply_data(data);
990 psy_cfg.drv_data = data;
991 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
992 &psy_cfg);
993 if (IS_ERR(data->psy)) {
994 err = PTR_ERR(data->psy);
995 goto remove;
996 }
997
998 platform_set_drvdata(pdev, data);
999
1000 return 0;
1001
1002remove:
1003 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1004 return err;
1005}
1006
1007static void compal_remove(struct platform_device *pdev)
1008{
1009 struct compal_data *data;
1010
1011 if (!extra_features)
1012 return;
1013
1014 pr_info("Unloading: resetting fan control to motherboard\n");
1015 pwm_disable_control();
1016
1017 data = platform_get_drvdata(pdev);
1018 power_supply_unregister(data->psy);
1019
1020 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1021}
1022
1023static struct platform_driver compal_driver = {
1024 .driver = {
1025 .name = DRIVER_NAME,
1026 },
1027 .probe = compal_probe,
1028 .remove = compal_remove,
1029};
1030
1031static int __init compal_init(void)
1032{
1033 int ret;
1034
1035 if (acpi_disabled) {
1036 pr_err("ACPI needs to be enabled for this driver to work!\n");
1037 return -ENODEV;
1038 }
1039
1040 if (!force && !dmi_check_system(compal_dmi_table)) {
1041 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
1042 return -ENODEV;
1043 }
1044
1045 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1046 struct backlight_properties props;
1047 memset(&props, 0, sizeof(struct backlight_properties));
1048 props.type = BACKLIGHT_PLATFORM;
1049 props.max_brightness = BACKLIGHT_LEVEL_MAX;
1050 compalbl_device = backlight_device_register(DRIVER_NAME,
1051 NULL, NULL,
1052 &compalbl_ops,
1053 &props);
1054 if (IS_ERR(compalbl_device))
1055 return PTR_ERR(compalbl_device);
1056 }
1057
1058 ret = platform_driver_register(&compal_driver);
1059 if (ret)
1060 goto err_backlight;
1061
1062 compal_device = platform_device_alloc(DRIVER_NAME, PLATFORM_DEVID_NONE);
1063 if (!compal_device) {
1064 ret = -ENOMEM;
1065 goto err_platform_driver;
1066 }
1067
1068 ret = platform_device_add(compal_device); /* This calls compal_probe */
1069 if (ret)
1070 goto err_platform_device;
1071
1072 ret = setup_rfkill();
1073 if (ret)
1074 goto err_rfkill;
1075
1076 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1077 return 0;
1078
1079err_rfkill:
1080 platform_device_del(compal_device);
1081
1082err_platform_device:
1083 platform_device_put(compal_device);
1084
1085err_platform_driver:
1086 platform_driver_unregister(&compal_driver);
1087
1088err_backlight:
1089 backlight_device_unregister(compalbl_device);
1090
1091 return ret;
1092}
1093
1094static void __exit compal_cleanup(void)
1095{
1096 platform_device_unregister(compal_device);
1097 platform_driver_unregister(&compal_driver);
1098 backlight_device_unregister(compalbl_device);
1099 rfkill_unregister(wifi_rfkill);
1100 rfkill_unregister(bt_rfkill);
1101 rfkill_destroy(wifi_rfkill);
1102 rfkill_destroy(bt_rfkill);
1103
1104 pr_info("Driver unloaded\n");
1105}
1106
1107module_init(compal_init);
1108module_exit(compal_cleanup);
1109
1110MODULE_AUTHOR("Cezary Jackiewicz");
1111MODULE_AUTHOR("Roald Frederickx <roald.frederickx@gmail.com>");
1112MODULE_DESCRIPTION("Compal Laptop Support");
1113MODULE_VERSION(DRIVER_VERSION);
1114MODULE_LICENSE("GPL");