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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*-*-linux-c-*-*/
3
4/*
5 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
6
7 based on MSI driver
8
9 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
10
11 */
12
13/*
14 * compal-laptop.c - Compal laptop support.
15 *
16 * This driver exports a few files in /sys/devices/platform/compal-laptop/:
17 * wake_up_XXX Whether or not we listen to such wake up events (rw)
18 *
19 * In addition to these platform device attributes the driver
20 * registers itself in the Linux backlight control, power_supply, rfkill
21 * and hwmon subsystem and is available to userspace under:
22 *
23 * /sys/class/backlight/compal-laptop/
24 * /sys/class/power_supply/compal-laptop/
25 * /sys/class/rfkill/rfkillX/
26 * /sys/class/hwmon/hwmonX/
27 *
28 * Notes on the power_supply battery interface:
29 * - the "minimum" design voltage is *the* design voltage
30 * - the ambient temperature is the average battery temperature
31 * and the value is an educated guess (see commented code below)
32 *
33 *
34 * This driver might work on other laptops produced by Compal. If you
35 * want to try it you can pass force=1 as argument to the module which
36 * will force it to load even when the DMI data doesn't identify the
37 * laptop as compatible.
38 *
39 * Lots of data available at:
40 * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/
41 * JHL90%20service%20manual-Final-0725.pdf
42 *
43 *
44 *
45 * Support for the Compal JHL90 added by Roald Frederickx
46 * (roald.frederickx@gmail.com):
47 * Driver got large revision. Added functionalities: backlight
48 * power, wake_on_XXX, a hwmon and power_supply interface.
49 *
50 * In case this gets merged into the kernel source: I want to dedicate this
51 * to Kasper Meerts, the awesome guy who showed me Linux and C!
52 */
53
54/* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
55 * only enabled on a JHL90 board until it is verified that they work on the
56 * other boards too. See the extra_features variable. */
57
58#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
59
60#include <linux/module.h>
61#include <linux/kernel.h>
62#include <linux/init.h>
63#include <linux/acpi.h>
64#include <linux/dmi.h>
65#include <linux/backlight.h>
66#include <linux/platform_device.h>
67#include <linux/rfkill.h>
68#include <linux/hwmon.h>
69#include <linux/hwmon-sysfs.h>
70#include <linux/power_supply.h>
71#include <linux/fb.h>
72#include <acpi/video.h>
73
74/* ======= */
75/* Defines */
76/* ======= */
77#define DRIVER_NAME "compal-laptop"
78#define DRIVER_VERSION "0.2.7"
79
80#define BACKLIGHT_LEVEL_ADDR 0xB9
81#define BACKLIGHT_LEVEL_MAX 7
82#define BACKLIGHT_STATE_ADDR 0x59
83#define BACKLIGHT_STATE_ON_DATA 0xE1
84#define BACKLIGHT_STATE_OFF_DATA 0xE2
85
86#define WAKE_UP_ADDR 0xA4
87#define WAKE_UP_PME (1 << 0)
88#define WAKE_UP_MODEM (1 << 1)
89#define WAKE_UP_LAN (1 << 2)
90#define WAKE_UP_WLAN (1 << 4)
91#define WAKE_UP_KEY (1 << 6)
92#define WAKE_UP_MOUSE (1 << 7)
93
94#define WIRELESS_ADDR 0xBB
95#define WIRELESS_WLAN (1 << 0)
96#define WIRELESS_BT (1 << 1)
97#define WIRELESS_WLAN_EXISTS (1 << 2)
98#define WIRELESS_BT_EXISTS (1 << 3)
99#define WIRELESS_KILLSWITCH (1 << 4)
100
101#define PWM_ADDRESS 0x46
102#define PWM_DISABLE_ADDR 0x59
103#define PWM_DISABLE_DATA 0xA5
104#define PWM_ENABLE_ADDR 0x59
105#define PWM_ENABLE_DATA 0xA8
106
107#define FAN_ADDRESS 0x46
108#define FAN_DATA 0x81
109#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
110#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
111#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
112
113#define TEMP_CPU 0xB0
114#define TEMP_CPU_LOCAL 0xB1
115#define TEMP_CPU_DTS 0xB5
116#define TEMP_NORTHBRIDGE 0xB6
117#define TEMP_VGA 0xB4
118#define TEMP_SKIN 0xB2
119
120#define BAT_MANUFACTURER_NAME_ADDR 0x10
121#define BAT_MANUFACTURER_NAME_LEN 9
122#define BAT_MODEL_NAME_ADDR 0x19
123#define BAT_MODEL_NAME_LEN 6
124#define BAT_SERIAL_NUMBER_ADDR 0xC4
125#define BAT_SERIAL_NUMBER_LEN 5
126#define BAT_CHARGE_NOW 0xC2
127#define BAT_CHARGE_DESIGN 0xCA
128#define BAT_VOLTAGE_NOW 0xC6
129#define BAT_VOLTAGE_DESIGN 0xC8
130#define BAT_CURRENT_NOW 0xD0
131#define BAT_CURRENT_AVG 0xD2
132#define BAT_POWER 0xD4
133#define BAT_CAPACITY 0xCE
134#define BAT_TEMP 0xD6
135#define BAT_TEMP_AVG 0xD7
136#define BAT_STATUS0 0xC1
137#define BAT_STATUS1 0xF0
138#define BAT_STATUS2 0xF1
139#define BAT_STOP_CHARGE1 0xF2
140#define BAT_STOP_CHARGE2 0xF3
141#define BAT_CHARGE_LIMIT 0x03
142#define BAT_CHARGE_LIMIT_MAX 100
143
144#define BAT_S0_DISCHARGE (1 << 0)
145#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
146#define BAT_S0_LOW (1 << 3)
147#define BAT_S0_CHARGING (1 << 1)
148#define BAT_S0_AC (1 << 7)
149#define BAT_S1_EXISTS (1 << 0)
150#define BAT_S1_FULL (1 << 1)
151#define BAT_S1_EMPTY (1 << 2)
152#define BAT_S1_LiION_OR_NiMH (1 << 7)
153#define BAT_S2_LOW_LOW (1 << 0)
154#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
155#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
156#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
157#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
158
159
160/* ======= */
161/* Structs */
162/* ======= */
163struct compal_data{
164 /* Fan control */
165 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
166 unsigned char curr_pwm;
167
168 /* Power supply */
169 struct power_supply *psy;
170 struct power_supply_info psy_info;
171 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
172 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
173 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
174};
175
176
177/* =============== */
178/* General globals */
179/* =============== */
180static bool force;
181module_param(force, bool, 0);
182MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
183
184/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
185 * only gets enabled on a JHL90 board. Might work with the others too */
186static bool extra_features;
187
188/* Nasty stuff. For some reason the fan control is very un-linear. I've
189 * come up with these values by looping through the possible inputs and
190 * watching the output of address 0x4F (do an ec_transaction writing 0x33
191 * into 0x4F and read a few bytes from the output, like so:
192 * u8 writeData = 0x33;
193 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
194 * That address is labeled "fan1 table information" in the service manual.
195 * It should be clear which value in 'buffer' changes). This seems to be
196 * related to fan speed. It isn't a proper 'realtime' fan speed value
197 * though, because physically stopping or speeding up the fan doesn't
198 * change it. It might be the average voltage or current of the pwm output.
199 * Nevertheless, it is more fine-grained than the actual RPM reading */
200static const unsigned char pwm_lookup_table[256] = {
201 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
202 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
203 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
204 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
205 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
206 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
207 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
208 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
209 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
210 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
211 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
212 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
213 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
214 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
215 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
216 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
217 187, 187, 193, 50
218};
219
220
221
222
223/* ========================= */
224/* Hardware access functions */
225/* ========================= */
226/* General access */
227static u8 ec_read_u8(u8 addr)
228{
229 u8 value = 0;
230 ec_read(addr, &value);
231 return value;
232}
233
234static s8 ec_read_s8(u8 addr)
235{
236 return (s8)ec_read_u8(addr);
237}
238
239static u16 ec_read_u16(u8 addr)
240{
241 int hi, lo;
242 lo = ec_read_u8(addr);
243 hi = ec_read_u8(addr + 1);
244 return (hi << 8) + lo;
245}
246
247static s16 ec_read_s16(u8 addr)
248{
249 return (s16) ec_read_u16(addr);
250}
251
252static void ec_read_sequence(u8 addr, u8 *buf, int len)
253{
254 int i;
255 for (i = 0; i < len; i++)
256 ec_read(addr + i, buf + i);
257}
258
259
260/* Backlight access */
261static int set_backlight_level(int level)
262{
263 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
264 return -EINVAL;
265
266 ec_write(BACKLIGHT_LEVEL_ADDR, level);
267
268 return 0;
269}
270
271static int get_backlight_level(void)
272{
273 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
274}
275
276static void set_backlight_state(bool on)
277{
278 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
279 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
280}
281
282
283/* Fan control access */
284static void pwm_enable_control(void)
285{
286 unsigned char writeData = PWM_ENABLE_DATA;
287 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
288}
289
290static void pwm_disable_control(void)
291{
292 unsigned char writeData = PWM_DISABLE_DATA;
293 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
294}
295
296static void set_pwm(int pwm)
297{
298 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
299}
300
301static int get_fan_rpm(void)
302{
303 u8 value, data = FAN_DATA;
304 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
305 return 100 * (int)value;
306}
307
308
309
310
311/* =================== */
312/* Interface functions */
313/* =================== */
314
315/* Backlight interface */
316static int bl_get_brightness(struct backlight_device *b)
317{
318 return get_backlight_level();
319}
320
321static int bl_update_status(struct backlight_device *b)
322{
323 int ret = set_backlight_level(b->props.brightness);
324 if (ret)
325 return ret;
326
327 set_backlight_state(!backlight_is_blank(b));
328 return 0;
329}
330
331static const struct backlight_ops compalbl_ops = {
332 .get_brightness = bl_get_brightness,
333 .update_status = bl_update_status,
334};
335
336
337/* Wireless interface */
338static int compal_rfkill_set(void *data, bool blocked)
339{
340 unsigned long radio = (unsigned long) data;
341 u8 result = ec_read_u8(WIRELESS_ADDR);
342 u8 value;
343
344 if (!blocked)
345 value = (u8) (result | radio);
346 else
347 value = (u8) (result & ~radio);
348 ec_write(WIRELESS_ADDR, value);
349
350 return 0;
351}
352
353static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
354{
355 u8 result = ec_read_u8(WIRELESS_ADDR);
356 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
357 rfkill_set_hw_state(rfkill, hw_blocked);
358}
359
360static const struct rfkill_ops compal_rfkill_ops = {
361 .poll = compal_rfkill_poll,
362 .set_block = compal_rfkill_set,
363};
364
365
366/* Wake_up interface */
367#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
368static ssize_t NAME##_show(struct device *dev, \
369 struct device_attribute *attr, char *buf) \
370{ \
371 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
372} \
373static ssize_t NAME##_store(struct device *dev, \
374 struct device_attribute *attr, const char *buf, size_t count) \
375{ \
376 int state; \
377 u8 old_val = ec_read_u8(ADDR); \
378 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
379 return -EINVAL; \
380 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
381 return count; \
382}
383
384SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
385SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
386SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
387SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
388SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
389SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
390
391/* Fan control interface */
392static ssize_t pwm_enable_show(struct device *dev,
393 struct device_attribute *attr, char *buf)
394{
395 struct compal_data *data = dev_get_drvdata(dev);
396 return sprintf(buf, "%d\n", data->pwm_enable);
397}
398
399static ssize_t pwm_enable_store(struct device *dev,
400 struct device_attribute *attr, const char *buf, size_t count)
401{
402 struct compal_data *data = dev_get_drvdata(dev);
403 long val;
404 int err;
405
406 err = kstrtol(buf, 10, &val);
407 if (err)
408 return err;
409 if (val < 0)
410 return -EINVAL;
411
412 data->pwm_enable = val;
413
414 switch (val) {
415 case 0: /* Full speed */
416 pwm_enable_control();
417 set_pwm(255);
418 break;
419 case 1: /* As set by pwm1 */
420 pwm_enable_control();
421 set_pwm(data->curr_pwm);
422 break;
423 default: /* Control by motherboard */
424 pwm_disable_control();
425 break;
426 }
427
428 return count;
429}
430
431static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
432 char *buf)
433{
434 struct compal_data *data = dev_get_drvdata(dev);
435 return sprintf(buf, "%hhu\n", data->curr_pwm);
436}
437
438static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
439 const char *buf, size_t count)
440{
441 struct compal_data *data = dev_get_drvdata(dev);
442 long val;
443 int err;
444
445 err = kstrtol(buf, 10, &val);
446 if (err)
447 return err;
448 if (val < 0 || val > 255)
449 return -EINVAL;
450
451 data->curr_pwm = val;
452
453 if (data->pwm_enable != 1)
454 return count;
455 set_pwm(val);
456
457 return count;
458}
459
460static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
461 char *buf)
462{
463 return sprintf(buf, "%d\n", get_fan_rpm());
464}
465
466
467/* Temperature interface */
468#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
469static ssize_t temp_##POSTFIX(struct device *dev, \
470 struct device_attribute *attr, char *buf) \
471{ \
472 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
473} \
474static ssize_t label_##POSTFIX(struct device *dev, \
475 struct device_attribute *attr, char *buf) \
476{ \
477 return sprintf(buf, "%s\n", LABEL); \
478}
479
480/* Labels as in service guide */
481TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
482TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
483TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
484TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
485TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
486TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
487
488
489/* Power supply interface */
490static int bat_status(void)
491{
492 u8 status0 = ec_read_u8(BAT_STATUS0);
493 u8 status1 = ec_read_u8(BAT_STATUS1);
494
495 if (status0 & BAT_S0_CHARGING)
496 return POWER_SUPPLY_STATUS_CHARGING;
497 if (status0 & BAT_S0_DISCHARGE)
498 return POWER_SUPPLY_STATUS_DISCHARGING;
499 if (status1 & BAT_S1_FULL)
500 return POWER_SUPPLY_STATUS_FULL;
501 return POWER_SUPPLY_STATUS_NOT_CHARGING;
502}
503
504static int bat_health(void)
505{
506 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
507
508 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
509 return POWER_SUPPLY_HEALTH_OVERHEAT;
510 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
511 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
512 if (status & BAT_STOP_CHRG1_BAD_CELL)
513 return POWER_SUPPLY_HEALTH_DEAD;
514 if (status & BAT_STOP_CHRG1_COMM_FAIL)
515 return POWER_SUPPLY_HEALTH_UNKNOWN;
516 return POWER_SUPPLY_HEALTH_GOOD;
517}
518
519static int bat_is_present(void)
520{
521 u8 status = ec_read_u8(BAT_STATUS2);
522 return ((status & BAT_S1_EXISTS) != 0);
523}
524
525static int bat_technology(void)
526{
527 u8 status = ec_read_u8(BAT_STATUS1);
528
529 if (status & BAT_S1_LiION_OR_NiMH)
530 return POWER_SUPPLY_TECHNOLOGY_LION;
531 return POWER_SUPPLY_TECHNOLOGY_NiMH;
532}
533
534static int bat_capacity_level(void)
535{
536 u8 status0 = ec_read_u8(BAT_STATUS0);
537 u8 status1 = ec_read_u8(BAT_STATUS1);
538 u8 status2 = ec_read_u8(BAT_STATUS2);
539
540 if (status0 & BAT_S0_DISCHRG_CRITICAL
541 || status1 & BAT_S1_EMPTY
542 || status2 & BAT_S2_LOW_LOW)
543 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
544 if (status0 & BAT_S0_LOW)
545 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
546 if (status1 & BAT_S1_FULL)
547 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
548 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
549}
550
551static int bat_get_property(struct power_supply *psy,
552 enum power_supply_property psp,
553 union power_supply_propval *val)
554{
555 struct compal_data *data = power_supply_get_drvdata(psy);
556
557 switch (psp) {
558 case POWER_SUPPLY_PROP_STATUS:
559 val->intval = bat_status();
560 break;
561 case POWER_SUPPLY_PROP_HEALTH:
562 val->intval = bat_health();
563 break;
564 case POWER_SUPPLY_PROP_PRESENT:
565 val->intval = bat_is_present();
566 break;
567 case POWER_SUPPLY_PROP_TECHNOLOGY:
568 val->intval = bat_technology();
569 break;
570 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
571 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
572 break;
573 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
574 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
575 break;
576 case POWER_SUPPLY_PROP_CURRENT_NOW:
577 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
578 break;
579 case POWER_SUPPLY_PROP_CURRENT_AVG:
580 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
581 break;
582 case POWER_SUPPLY_PROP_POWER_NOW:
583 val->intval = ec_read_u8(BAT_POWER) * 1000000;
584 break;
585 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
586 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
587 break;
588 case POWER_SUPPLY_PROP_CHARGE_NOW:
589 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
590 break;
591 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
592 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
593 break;
594 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
595 val->intval = BAT_CHARGE_LIMIT_MAX;
596 break;
597 case POWER_SUPPLY_PROP_CAPACITY:
598 val->intval = ec_read_u8(BAT_CAPACITY);
599 break;
600 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
601 val->intval = bat_capacity_level();
602 break;
603 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
604 * the number of degrees, whereas BAT_TEMP is somewhat more
605 * complicated. It looks like this is a negative nember with a
606 * 100/256 divider and an offset of 222. Both were determined
607 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
608 case POWER_SUPPLY_PROP_TEMP:
609 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
610 break;
611 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
612 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
613 break;
614 /* Neither the model name nor manufacturer name work for me. */
615 case POWER_SUPPLY_PROP_MODEL_NAME:
616 val->strval = data->bat_model_name;
617 break;
618 case POWER_SUPPLY_PROP_MANUFACTURER:
619 val->strval = data->bat_manufacturer_name;
620 break;
621 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
622 val->strval = data->bat_serial_number;
623 break;
624 default:
625 break;
626 }
627 return 0;
628}
629
630static int bat_set_property(struct power_supply *psy,
631 enum power_supply_property psp,
632 const union power_supply_propval *val)
633{
634 int level;
635
636 switch (psp) {
637 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
638 level = val->intval;
639 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
640 return -EINVAL;
641 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
642 return -EIO;
643 break;
644 default:
645 break;
646 }
647 return 0;
648}
649
650static int bat_writeable_property(struct power_supply *psy,
651 enum power_supply_property psp)
652{
653 switch (psp) {
654 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
655 return 1;
656 default:
657 return 0;
658 }
659}
660
661
662
663
664/* ============== */
665/* Driver Globals */
666/* ============== */
667static DEVICE_ATTR_RW(wake_up_pme);
668static DEVICE_ATTR_RW(wake_up_modem);
669static DEVICE_ATTR_RW(wake_up_lan);
670static DEVICE_ATTR_RW(wake_up_wlan);
671static DEVICE_ATTR_RW(wake_up_key);
672static DEVICE_ATTR_RW(wake_up_mouse);
673
674static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
675static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
676static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
677static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
678static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
679static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
680static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
681static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
682static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
683static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
684static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
685static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
686static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
687static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
688static DEVICE_ATTR(pwm1_enable,
689 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
690
691static struct attribute *compal_platform_attrs[] = {
692 &dev_attr_wake_up_pme.attr,
693 &dev_attr_wake_up_modem.attr,
694 &dev_attr_wake_up_lan.attr,
695 &dev_attr_wake_up_wlan.attr,
696 &dev_attr_wake_up_key.attr,
697 &dev_attr_wake_up_mouse.attr,
698 NULL
699};
700static const struct attribute_group compal_platform_attr_group = {
701 .attrs = compal_platform_attrs
702};
703
704static struct attribute *compal_hwmon_attrs[] = {
705 &dev_attr_pwm1_enable.attr,
706 &dev_attr_pwm1.attr,
707 &dev_attr_fan1_input.attr,
708 &dev_attr_temp1_input.attr,
709 &dev_attr_temp2_input.attr,
710 &dev_attr_temp3_input.attr,
711 &dev_attr_temp4_input.attr,
712 &dev_attr_temp5_input.attr,
713 &dev_attr_temp6_input.attr,
714 &dev_attr_temp1_label.attr,
715 &dev_attr_temp2_label.attr,
716 &dev_attr_temp3_label.attr,
717 &dev_attr_temp4_label.attr,
718 &dev_attr_temp5_label.attr,
719 &dev_attr_temp6_label.attr,
720 NULL
721};
722ATTRIBUTE_GROUPS(compal_hwmon);
723
724static enum power_supply_property compal_bat_properties[] = {
725 POWER_SUPPLY_PROP_STATUS,
726 POWER_SUPPLY_PROP_HEALTH,
727 POWER_SUPPLY_PROP_PRESENT,
728 POWER_SUPPLY_PROP_TECHNOLOGY,
729 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
730 POWER_SUPPLY_PROP_VOLTAGE_NOW,
731 POWER_SUPPLY_PROP_CURRENT_NOW,
732 POWER_SUPPLY_PROP_CURRENT_AVG,
733 POWER_SUPPLY_PROP_POWER_NOW,
734 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
735 POWER_SUPPLY_PROP_CHARGE_NOW,
736 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
737 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
738 POWER_SUPPLY_PROP_CAPACITY,
739 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
740 POWER_SUPPLY_PROP_TEMP,
741 POWER_SUPPLY_PROP_TEMP_AMBIENT,
742 POWER_SUPPLY_PROP_MODEL_NAME,
743 POWER_SUPPLY_PROP_MANUFACTURER,
744 POWER_SUPPLY_PROP_SERIAL_NUMBER,
745};
746
747static struct backlight_device *compalbl_device;
748
749static struct platform_device *compal_device;
750
751static struct rfkill *wifi_rfkill;
752static struct rfkill *bt_rfkill;
753
754
755
756
757
758/* =================================== */
759/* Initialization & clean-up functions */
760/* =================================== */
761
762static int dmi_check_cb(const struct dmi_system_id *id)
763{
764 pr_info("Identified laptop model '%s'\n", id->ident);
765 extra_features = false;
766 return 1;
767}
768
769static int dmi_check_cb_extra(const struct dmi_system_id *id)
770{
771 pr_info("Identified laptop model '%s', enabling extra features\n",
772 id->ident);
773 extra_features = true;
774 return 1;
775}
776
777static const struct dmi_system_id compal_dmi_table[] __initconst = {
778 {
779 .ident = "FL90/IFL90",
780 .matches = {
781 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
782 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
783 },
784 .callback = dmi_check_cb
785 },
786 {
787 .ident = "FL90/IFL90",
788 .matches = {
789 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
790 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
791 },
792 .callback = dmi_check_cb
793 },
794 {
795 .ident = "FL91/IFL91",
796 .matches = {
797 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
798 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
799 },
800 .callback = dmi_check_cb
801 },
802 {
803 .ident = "FL92/JFL92",
804 .matches = {
805 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
806 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
807 },
808 .callback = dmi_check_cb
809 },
810 {
811 .ident = "FT00/IFT00",
812 .matches = {
813 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
814 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
815 },
816 .callback = dmi_check_cb
817 },
818 {
819 .ident = "Dell Mini 9",
820 .matches = {
821 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
822 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
823 },
824 .callback = dmi_check_cb
825 },
826 {
827 .ident = "Dell Mini 10",
828 .matches = {
829 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
830 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
831 },
832 .callback = dmi_check_cb
833 },
834 {
835 .ident = "Dell Mini 10v",
836 .matches = {
837 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
838 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
839 },
840 .callback = dmi_check_cb
841 },
842 {
843 .ident = "Dell Mini 1012",
844 .matches = {
845 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
846 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
847 },
848 .callback = dmi_check_cb
849 },
850 {
851 .ident = "Dell Inspiron 11z",
852 .matches = {
853 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
854 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
855 },
856 .callback = dmi_check_cb
857 },
858 {
859 .ident = "Dell Mini 12",
860 .matches = {
861 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
862 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
863 },
864 .callback = dmi_check_cb
865 },
866 {
867 .ident = "JHL90",
868 .matches = {
869 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
870 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
871 },
872 .callback = dmi_check_cb_extra
873 },
874 {
875 .ident = "KHLB2",
876 .matches = {
877 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
878 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
879 },
880 .callback = dmi_check_cb_extra
881 },
882 { }
883};
884MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
885
886static const struct power_supply_desc psy_bat_desc = {
887 .name = DRIVER_NAME,
888 .type = POWER_SUPPLY_TYPE_BATTERY,
889 .properties = compal_bat_properties,
890 .num_properties = ARRAY_SIZE(compal_bat_properties),
891 .get_property = bat_get_property,
892 .set_property = bat_set_property,
893 .property_is_writeable = bat_writeable_property,
894};
895
896static void initialize_power_supply_data(struct compal_data *data)
897{
898 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
899 data->bat_manufacturer_name,
900 BAT_MANUFACTURER_NAME_LEN);
901 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
902
903 ec_read_sequence(BAT_MODEL_NAME_ADDR,
904 data->bat_model_name,
905 BAT_MODEL_NAME_LEN);
906 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
907
908 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
909 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
910}
911
912static void initialize_fan_control_data(struct compal_data *data)
913{
914 data->pwm_enable = 2; /* Keep motherboard in control for now */
915 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
916 if we take over... */
917}
918
919static int setup_rfkill(void)
920{
921 int ret;
922
923 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
924 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
925 (void *) WIRELESS_WLAN);
926 if (!wifi_rfkill)
927 return -ENOMEM;
928
929 ret = rfkill_register(wifi_rfkill);
930 if (ret)
931 goto err_wifi;
932
933 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
934 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
935 (void *) WIRELESS_BT);
936 if (!bt_rfkill) {
937 ret = -ENOMEM;
938 goto err_allocate_bt;
939 }
940 ret = rfkill_register(bt_rfkill);
941 if (ret)
942 goto err_register_bt;
943
944 return 0;
945
946err_register_bt:
947 rfkill_destroy(bt_rfkill);
948
949err_allocate_bt:
950 rfkill_unregister(wifi_rfkill);
951
952err_wifi:
953 rfkill_destroy(wifi_rfkill);
954
955 return ret;
956}
957
958static int compal_probe(struct platform_device *pdev)
959{
960 int err;
961 struct compal_data *data;
962 struct device *hwmon_dev;
963 struct power_supply_config psy_cfg = {};
964
965 if (!extra_features)
966 return 0;
967
968 /* Fan control */
969 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
970 if (!data)
971 return -ENOMEM;
972
973 initialize_fan_control_data(data);
974
975 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
976 if (err)
977 return err;
978
979 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
980 "compal", data,
981 compal_hwmon_groups);
982 if (IS_ERR(hwmon_dev)) {
983 err = PTR_ERR(hwmon_dev);
984 goto remove;
985 }
986
987 /* Power supply */
988 initialize_power_supply_data(data);
989 psy_cfg.drv_data = data;
990 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
991 &psy_cfg);
992 if (IS_ERR(data->psy)) {
993 err = PTR_ERR(data->psy);
994 goto remove;
995 }
996
997 platform_set_drvdata(pdev, data);
998
999 return 0;
1000
1001remove:
1002 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1003 return err;
1004}
1005
1006static int compal_remove(struct platform_device *pdev)
1007{
1008 struct compal_data *data;
1009
1010 if (!extra_features)
1011 return 0;
1012
1013 pr_info("Unloading: resetting fan control to motherboard\n");
1014 pwm_disable_control();
1015
1016 data = platform_get_drvdata(pdev);
1017 power_supply_unregister(data->psy);
1018
1019 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1020
1021 return 0;
1022}
1023
1024static struct platform_driver compal_driver = {
1025 .driver = {
1026 .name = DRIVER_NAME,
1027 },
1028 .probe = compal_probe,
1029 .remove = compal_remove,
1030};
1031
1032static int __init compal_init(void)
1033{
1034 int ret;
1035
1036 if (acpi_disabled) {
1037 pr_err("ACPI needs to be enabled for this driver to work!\n");
1038 return -ENODEV;
1039 }
1040
1041 if (!force && !dmi_check_system(compal_dmi_table)) {
1042 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
1043 return -ENODEV;
1044 }
1045
1046 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1047 struct backlight_properties props;
1048 memset(&props, 0, sizeof(struct backlight_properties));
1049 props.type = BACKLIGHT_PLATFORM;
1050 props.max_brightness = BACKLIGHT_LEVEL_MAX;
1051 compalbl_device = backlight_device_register(DRIVER_NAME,
1052 NULL, NULL,
1053 &compalbl_ops,
1054 &props);
1055 if (IS_ERR(compalbl_device))
1056 return PTR_ERR(compalbl_device);
1057 }
1058
1059 ret = platform_driver_register(&compal_driver);
1060 if (ret)
1061 goto err_backlight;
1062
1063 compal_device = platform_device_alloc(DRIVER_NAME, PLATFORM_DEVID_NONE);
1064 if (!compal_device) {
1065 ret = -ENOMEM;
1066 goto err_platform_driver;
1067 }
1068
1069 ret = platform_device_add(compal_device); /* This calls compal_probe */
1070 if (ret)
1071 goto err_platform_device;
1072
1073 ret = setup_rfkill();
1074 if (ret)
1075 goto err_rfkill;
1076
1077 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1078 return 0;
1079
1080err_rfkill:
1081 platform_device_del(compal_device);
1082
1083err_platform_device:
1084 platform_device_put(compal_device);
1085
1086err_platform_driver:
1087 platform_driver_unregister(&compal_driver);
1088
1089err_backlight:
1090 backlight_device_unregister(compalbl_device);
1091
1092 return ret;
1093}
1094
1095static void __exit compal_cleanup(void)
1096{
1097 platform_device_unregister(compal_device);
1098 platform_driver_unregister(&compal_driver);
1099 backlight_device_unregister(compalbl_device);
1100 rfkill_unregister(wifi_rfkill);
1101 rfkill_unregister(bt_rfkill);
1102 rfkill_destroy(wifi_rfkill);
1103 rfkill_destroy(bt_rfkill);
1104
1105 pr_info("Driver unloaded\n");
1106}
1107
1108module_init(compal_init);
1109module_exit(compal_cleanup);
1110
1111MODULE_AUTHOR("Cezary Jackiewicz");
1112MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1113MODULE_DESCRIPTION("Compal Laptop Support");
1114MODULE_VERSION(DRIVER_VERSION);
1115MODULE_LICENSE("GPL");
1/*-*-linux-c-*-*/
2
3/*
4 Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
5
6 based on MSI driver
7
8 Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 02110-1301, USA.
24 */
25
26/*
27 * compal-laptop.c - Compal laptop support.
28 *
29 * This driver exports a few files in /sys/devices/platform/compal-laptop/:
30 * wake_up_XXX Whether or not we listen to such wake up events (rw)
31 *
32 * In addition to these platform device attributes the driver
33 * registers itself in the Linux backlight control, power_supply, rfkill
34 * and hwmon subsystem and is available to userspace under:
35 *
36 * /sys/class/backlight/compal-laptop/
37 * /sys/class/power_supply/compal-laptop/
38 * /sys/class/rfkill/rfkillX/
39 * /sys/class/hwmon/hwmonX/
40 *
41 * Notes on the power_supply battery interface:
42 * - the "minimum" design voltage is *the* design voltage
43 * - the ambient temperature is the average battery temperature
44 * and the value is an educated guess (see commented code below)
45 *
46 *
47 * This driver might work on other laptops produced by Compal. If you
48 * want to try it you can pass force=1 as argument to the module which
49 * will force it to load even when the DMI data doesn't identify the
50 * laptop as compatible.
51 *
52 * Lots of data available at:
53 * http://service1.marasst.com/Compal/JHL90_91/Service%20Manual/
54 * JHL90%20service%20manual-Final-0725.pdf
55 *
56 *
57 *
58 * Support for the Compal JHL90 added by Roald Frederickx
59 * (roald.frederickx@gmail.com):
60 * Driver got large revision. Added functionalities: backlight
61 * power, wake_on_XXX, a hwmon and power_supply interface.
62 *
63 * In case this gets merged into the kernel source: I want to dedicate this
64 * to Kasper Meerts, the awesome guy who showed me Linux and C!
65 */
66
67/* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
68 * only enabled on a JHL90 board until it is verified that they work on the
69 * other boards too. See the extra_features variable. */
70
71#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
72
73#include <linux/module.h>
74#include <linux/kernel.h>
75#include <linux/init.h>
76#include <linux/acpi.h>
77#include <linux/dmi.h>
78#include <linux/backlight.h>
79#include <linux/platform_device.h>
80#include <linux/rfkill.h>
81#include <linux/hwmon.h>
82#include <linux/hwmon-sysfs.h>
83#include <linux/power_supply.h>
84#include <linux/fb.h>
85#include <acpi/video.h>
86
87/* ======= */
88/* Defines */
89/* ======= */
90#define DRIVER_NAME "compal-laptop"
91#define DRIVER_VERSION "0.2.7"
92
93#define BACKLIGHT_LEVEL_ADDR 0xB9
94#define BACKLIGHT_LEVEL_MAX 7
95#define BACKLIGHT_STATE_ADDR 0x59
96#define BACKLIGHT_STATE_ON_DATA 0xE1
97#define BACKLIGHT_STATE_OFF_DATA 0xE2
98
99#define WAKE_UP_ADDR 0xA4
100#define WAKE_UP_PME (1 << 0)
101#define WAKE_UP_MODEM (1 << 1)
102#define WAKE_UP_LAN (1 << 2)
103#define WAKE_UP_WLAN (1 << 4)
104#define WAKE_UP_KEY (1 << 6)
105#define WAKE_UP_MOUSE (1 << 7)
106
107#define WIRELESS_ADDR 0xBB
108#define WIRELESS_WLAN (1 << 0)
109#define WIRELESS_BT (1 << 1)
110#define WIRELESS_WLAN_EXISTS (1 << 2)
111#define WIRELESS_BT_EXISTS (1 << 3)
112#define WIRELESS_KILLSWITCH (1 << 4)
113
114#define PWM_ADDRESS 0x46
115#define PWM_DISABLE_ADDR 0x59
116#define PWM_DISABLE_DATA 0xA5
117#define PWM_ENABLE_ADDR 0x59
118#define PWM_ENABLE_DATA 0xA8
119
120#define FAN_ADDRESS 0x46
121#define FAN_DATA 0x81
122#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
123#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
124#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
125
126#define TEMP_CPU 0xB0
127#define TEMP_CPU_LOCAL 0xB1
128#define TEMP_CPU_DTS 0xB5
129#define TEMP_NORTHBRIDGE 0xB6
130#define TEMP_VGA 0xB4
131#define TEMP_SKIN 0xB2
132
133#define BAT_MANUFACTURER_NAME_ADDR 0x10
134#define BAT_MANUFACTURER_NAME_LEN 9
135#define BAT_MODEL_NAME_ADDR 0x19
136#define BAT_MODEL_NAME_LEN 6
137#define BAT_SERIAL_NUMBER_ADDR 0xC4
138#define BAT_SERIAL_NUMBER_LEN 5
139#define BAT_CHARGE_NOW 0xC2
140#define BAT_CHARGE_DESIGN 0xCA
141#define BAT_VOLTAGE_NOW 0xC6
142#define BAT_VOLTAGE_DESIGN 0xC8
143#define BAT_CURRENT_NOW 0xD0
144#define BAT_CURRENT_AVG 0xD2
145#define BAT_POWER 0xD4
146#define BAT_CAPACITY 0xCE
147#define BAT_TEMP 0xD6
148#define BAT_TEMP_AVG 0xD7
149#define BAT_STATUS0 0xC1
150#define BAT_STATUS1 0xF0
151#define BAT_STATUS2 0xF1
152#define BAT_STOP_CHARGE1 0xF2
153#define BAT_STOP_CHARGE2 0xF3
154#define BAT_CHARGE_LIMIT 0x03
155#define BAT_CHARGE_LIMIT_MAX 100
156
157#define BAT_S0_DISCHARGE (1 << 0)
158#define BAT_S0_DISCHRG_CRITICAL (1 << 2)
159#define BAT_S0_LOW (1 << 3)
160#define BAT_S0_CHARGING (1 << 1)
161#define BAT_S0_AC (1 << 7)
162#define BAT_S1_EXISTS (1 << 0)
163#define BAT_S1_FULL (1 << 1)
164#define BAT_S1_EMPTY (1 << 2)
165#define BAT_S1_LiION_OR_NiMH (1 << 7)
166#define BAT_S2_LOW_LOW (1 << 0)
167#define BAT_STOP_CHRG1_BAD_CELL (1 << 1)
168#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2)
169#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6)
170#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7)
171
172
173/* ======= */
174/* Structs */
175/* ======= */
176struct compal_data{
177 /* Fan control */
178 int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
179 unsigned char curr_pwm;
180
181 /* Power supply */
182 struct power_supply *psy;
183 struct power_supply_info psy_info;
184 char bat_model_name[BAT_MODEL_NAME_LEN + 1];
185 char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1];
186 char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1];
187};
188
189
190/* =============== */
191/* General globals */
192/* =============== */
193static bool force;
194module_param(force, bool, 0);
195MODULE_PARM_DESC(force, "Force driver load, ignore DMI data");
196
197/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
198 * only gets enabled on a JHL90 board. Might work with the others too */
199static bool extra_features;
200
201/* Nasty stuff. For some reason the fan control is very un-linear. I've
202 * come up with these values by looping through the possible inputs and
203 * watching the output of address 0x4F (do an ec_transaction writing 0x33
204 * into 0x4F and read a few bytes from the output, like so:
205 * u8 writeData = 0x33;
206 * ec_transaction(0x4F, &writeData, 1, buffer, 32);
207 * That address is labeled "fan1 table information" in the service manual.
208 * It should be clear which value in 'buffer' changes). This seems to be
209 * related to fan speed. It isn't a proper 'realtime' fan speed value
210 * though, because physically stopping or speeding up the fan doesn't
211 * change it. It might be the average voltage or current of the pwm output.
212 * Nevertheless, it is more fine-grained than the actual RPM reading */
213static const unsigned char pwm_lookup_table[256] = {
214 0, 0, 0, 1, 1, 1, 2, 253, 254, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6,
215 7, 7, 7, 8, 86, 86, 9, 9, 9, 10, 10, 10, 11, 92, 92, 12, 12, 95,
216 13, 66, 66, 14, 14, 98, 15, 15, 15, 16, 16, 67, 17, 17, 72, 18, 70,
217 75, 19, 90, 90, 73, 73, 73, 21, 21, 91, 91, 91, 96, 23, 94, 94, 94,
218 94, 94, 94, 94, 94, 94, 94, 141, 141, 238, 223, 192, 139, 139, 139,
219 139, 139, 142, 142, 142, 142, 142, 78, 78, 78, 78, 78, 76, 76, 76,
220 76, 76, 79, 79, 79, 79, 79, 79, 79, 20, 20, 20, 20, 20, 22, 22, 22,
221 22, 22, 24, 24, 24, 24, 24, 24, 219, 219, 219, 219, 219, 219, 219,
222 219, 27, 27, 188, 188, 28, 28, 28, 29, 186, 186, 186, 186, 186,
223 186, 186, 186, 186, 186, 31, 31, 31, 31, 31, 32, 32, 32, 41, 33,
224 33, 33, 33, 33, 252, 252, 34, 34, 34, 43, 35, 35, 35, 36, 36, 38,
225 206, 206, 206, 206, 206, 206, 206, 206, 206, 37, 37, 37, 46, 46,
226 47, 47, 232, 232, 232, 232, 232, 232, 232, 232, 232, 232, 48, 48,
227 48, 48, 48, 40, 40, 40, 49, 42, 42, 42, 42, 42, 42, 42, 42, 44,
228 189, 189, 189, 189, 54, 54, 45, 45, 45, 45, 45, 45, 45, 45, 251,
229 191, 199, 199, 199, 199, 199, 215, 215, 215, 215, 187, 187, 187,
230 187, 187, 193, 50
231};
232
233
234
235
236/* ========================= */
237/* Hardware access functions */
238/* ========================= */
239/* General access */
240static u8 ec_read_u8(u8 addr)
241{
242 u8 value;
243 ec_read(addr, &value);
244 return value;
245}
246
247static s8 ec_read_s8(u8 addr)
248{
249 return (s8)ec_read_u8(addr);
250}
251
252static u16 ec_read_u16(u8 addr)
253{
254 int hi, lo;
255 lo = ec_read_u8(addr);
256 hi = ec_read_u8(addr + 1);
257 return (hi << 8) + lo;
258}
259
260static s16 ec_read_s16(u8 addr)
261{
262 return (s16) ec_read_u16(addr);
263}
264
265static void ec_read_sequence(u8 addr, u8 *buf, int len)
266{
267 int i;
268 for (i = 0; i < len; i++)
269 ec_read(addr + i, buf + i);
270}
271
272
273/* Backlight access */
274static int set_backlight_level(int level)
275{
276 if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
277 return -EINVAL;
278
279 ec_write(BACKLIGHT_LEVEL_ADDR, level);
280
281 return 0;
282}
283
284static int get_backlight_level(void)
285{
286 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
287}
288
289static void set_backlight_state(bool on)
290{
291 u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
292 ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1, NULL, 0);
293}
294
295
296/* Fan control access */
297static void pwm_enable_control(void)
298{
299 unsigned char writeData = PWM_ENABLE_DATA;
300 ec_transaction(PWM_ENABLE_ADDR, &writeData, 1, NULL, 0);
301}
302
303static void pwm_disable_control(void)
304{
305 unsigned char writeData = PWM_DISABLE_DATA;
306 ec_transaction(PWM_DISABLE_ADDR, &writeData, 1, NULL, 0);
307}
308
309static void set_pwm(int pwm)
310{
311 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
312}
313
314static int get_fan_rpm(void)
315{
316 u8 value, data = FAN_DATA;
317 ec_transaction(FAN_ADDRESS, &data, 1, &value, 1);
318 return 100 * (int)value;
319}
320
321
322
323
324/* =================== */
325/* Interface functions */
326/* =================== */
327
328/* Backlight interface */
329static int bl_get_brightness(struct backlight_device *b)
330{
331 return get_backlight_level();
332}
333
334static int bl_update_status(struct backlight_device *b)
335{
336 int ret = set_backlight_level(b->props.brightness);
337 if (ret)
338 return ret;
339
340 set_backlight_state((b->props.power == FB_BLANK_UNBLANK)
341 && !(b->props.state & BL_CORE_SUSPENDED)
342 && !(b->props.state & BL_CORE_FBBLANK));
343 return 0;
344}
345
346static const struct backlight_ops compalbl_ops = {
347 .get_brightness = bl_get_brightness,
348 .update_status = bl_update_status,
349};
350
351
352/* Wireless interface */
353static int compal_rfkill_set(void *data, bool blocked)
354{
355 unsigned long radio = (unsigned long) data;
356 u8 result = ec_read_u8(WIRELESS_ADDR);
357 u8 value;
358
359 if (!blocked)
360 value = (u8) (result | radio);
361 else
362 value = (u8) (result & ~radio);
363 ec_write(WIRELESS_ADDR, value);
364
365 return 0;
366}
367
368static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
369{
370 u8 result = ec_read_u8(WIRELESS_ADDR);
371 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
372 rfkill_set_hw_state(rfkill, hw_blocked);
373}
374
375static const struct rfkill_ops compal_rfkill_ops = {
376 .poll = compal_rfkill_poll,
377 .set_block = compal_rfkill_set,
378};
379
380
381/* Wake_up interface */
382#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
383static ssize_t NAME##_show(struct device *dev, \
384 struct device_attribute *attr, char *buf) \
385{ \
386 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
387} \
388static ssize_t NAME##_store(struct device *dev, \
389 struct device_attribute *attr, const char *buf, size_t count) \
390{ \
391 int state; \
392 u8 old_val = ec_read_u8(ADDR); \
393 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
394 return -EINVAL; \
395 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
396 return count; \
397}
398
399SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
400SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
401SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
402SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
403SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
404SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
405
406/* Fan control interface */
407static ssize_t pwm_enable_show(struct device *dev,
408 struct device_attribute *attr, char *buf)
409{
410 struct compal_data *data = dev_get_drvdata(dev);
411 return sprintf(buf, "%d\n", data->pwm_enable);
412}
413
414static ssize_t pwm_enable_store(struct device *dev,
415 struct device_attribute *attr, const char *buf, size_t count)
416{
417 struct compal_data *data = dev_get_drvdata(dev);
418 long val;
419 int err;
420
421 err = kstrtol(buf, 10, &val);
422 if (err)
423 return err;
424 if (val < 0)
425 return -EINVAL;
426
427 data->pwm_enable = val;
428
429 switch (val) {
430 case 0: /* Full speed */
431 pwm_enable_control();
432 set_pwm(255);
433 break;
434 case 1: /* As set by pwm1 */
435 pwm_enable_control();
436 set_pwm(data->curr_pwm);
437 break;
438 default: /* Control by motherboard */
439 pwm_disable_control();
440 break;
441 }
442
443 return count;
444}
445
446static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
447 char *buf)
448{
449 struct compal_data *data = dev_get_drvdata(dev);
450 return sprintf(buf, "%hhu\n", data->curr_pwm);
451}
452
453static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
454 const char *buf, size_t count)
455{
456 struct compal_data *data = dev_get_drvdata(dev);
457 long val;
458 int err;
459
460 err = kstrtol(buf, 10, &val);
461 if (err)
462 return err;
463 if (val < 0 || val > 255)
464 return -EINVAL;
465
466 data->curr_pwm = val;
467
468 if (data->pwm_enable != 1)
469 return count;
470 set_pwm(val);
471
472 return count;
473}
474
475static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
476 char *buf)
477{
478 return sprintf(buf, "%d\n", get_fan_rpm());
479}
480
481
482/* Temperature interface */
483#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
484static ssize_t temp_##POSTFIX(struct device *dev, \
485 struct device_attribute *attr, char *buf) \
486{ \
487 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
488} \
489static ssize_t label_##POSTFIX(struct device *dev, \
490 struct device_attribute *attr, char *buf) \
491{ \
492 return sprintf(buf, "%s\n", LABEL); \
493}
494
495/* Labels as in service guide */
496TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
497TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
498TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
499TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
500TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
501TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
502
503
504/* Power supply interface */
505static int bat_status(void)
506{
507 u8 status0 = ec_read_u8(BAT_STATUS0);
508 u8 status1 = ec_read_u8(BAT_STATUS1);
509
510 if (status0 & BAT_S0_CHARGING)
511 return POWER_SUPPLY_STATUS_CHARGING;
512 if (status0 & BAT_S0_DISCHARGE)
513 return POWER_SUPPLY_STATUS_DISCHARGING;
514 if (status1 & BAT_S1_FULL)
515 return POWER_SUPPLY_STATUS_FULL;
516 return POWER_SUPPLY_STATUS_NOT_CHARGING;
517}
518
519static int bat_health(void)
520{
521 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
522
523 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
524 return POWER_SUPPLY_HEALTH_OVERHEAT;
525 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
526 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
527 if (status & BAT_STOP_CHRG1_BAD_CELL)
528 return POWER_SUPPLY_HEALTH_DEAD;
529 if (status & BAT_STOP_CHRG1_COMM_FAIL)
530 return POWER_SUPPLY_HEALTH_UNKNOWN;
531 return POWER_SUPPLY_HEALTH_GOOD;
532}
533
534static int bat_is_present(void)
535{
536 u8 status = ec_read_u8(BAT_STATUS2);
537 return ((status & BAT_S1_EXISTS) != 0);
538}
539
540static int bat_technology(void)
541{
542 u8 status = ec_read_u8(BAT_STATUS1);
543
544 if (status & BAT_S1_LiION_OR_NiMH)
545 return POWER_SUPPLY_TECHNOLOGY_LION;
546 return POWER_SUPPLY_TECHNOLOGY_NiMH;
547}
548
549static int bat_capacity_level(void)
550{
551 u8 status0 = ec_read_u8(BAT_STATUS0);
552 u8 status1 = ec_read_u8(BAT_STATUS1);
553 u8 status2 = ec_read_u8(BAT_STATUS2);
554
555 if (status0 & BAT_S0_DISCHRG_CRITICAL
556 || status1 & BAT_S1_EMPTY
557 || status2 & BAT_S2_LOW_LOW)
558 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
559 if (status0 & BAT_S0_LOW)
560 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
561 if (status1 & BAT_S1_FULL)
562 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
563 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
564}
565
566static int bat_get_property(struct power_supply *psy,
567 enum power_supply_property psp,
568 union power_supply_propval *val)
569{
570 struct compal_data *data = power_supply_get_drvdata(psy);
571
572 switch (psp) {
573 case POWER_SUPPLY_PROP_STATUS:
574 val->intval = bat_status();
575 break;
576 case POWER_SUPPLY_PROP_HEALTH:
577 val->intval = bat_health();
578 break;
579 case POWER_SUPPLY_PROP_PRESENT:
580 val->intval = bat_is_present();
581 break;
582 case POWER_SUPPLY_PROP_TECHNOLOGY:
583 val->intval = bat_technology();
584 break;
585 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
586 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
587 break;
588 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
589 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
590 break;
591 case POWER_SUPPLY_PROP_CURRENT_NOW:
592 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
593 break;
594 case POWER_SUPPLY_PROP_CURRENT_AVG:
595 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
596 break;
597 case POWER_SUPPLY_PROP_POWER_NOW:
598 val->intval = ec_read_u8(BAT_POWER) * 1000000;
599 break;
600 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
601 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
602 break;
603 case POWER_SUPPLY_PROP_CHARGE_NOW:
604 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
605 break;
606 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
607 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
608 break;
609 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
610 val->intval = BAT_CHARGE_LIMIT_MAX;
611 break;
612 case POWER_SUPPLY_PROP_CAPACITY:
613 val->intval = ec_read_u8(BAT_CAPACITY);
614 break;
615 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
616 val->intval = bat_capacity_level();
617 break;
618 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
619 * the number of degrees, whereas BAT_TEMP is somewhat more
620 * complicated. It looks like this is a negative nember with a
621 * 100/256 divider and an offset of 222. Both were determined
622 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
623 case POWER_SUPPLY_PROP_TEMP:
624 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
625 break;
626 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
627 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
628 break;
629 /* Neither the model name nor manufacturer name work for me. */
630 case POWER_SUPPLY_PROP_MODEL_NAME:
631 val->strval = data->bat_model_name;
632 break;
633 case POWER_SUPPLY_PROP_MANUFACTURER:
634 val->strval = data->bat_manufacturer_name;
635 break;
636 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
637 val->strval = data->bat_serial_number;
638 break;
639 default:
640 break;
641 }
642 return 0;
643}
644
645static int bat_set_property(struct power_supply *psy,
646 enum power_supply_property psp,
647 const union power_supply_propval *val)
648{
649 int level;
650
651 switch (psp) {
652 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
653 level = val->intval;
654 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
655 return -EINVAL;
656 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
657 return -EIO;
658 break;
659 default:
660 break;
661 }
662 return 0;
663}
664
665static int bat_writeable_property(struct power_supply *psy,
666 enum power_supply_property psp)
667{
668 switch (psp) {
669 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
670 return 1;
671 default:
672 return 0;
673 }
674}
675
676
677
678
679/* ============== */
680/* Driver Globals */
681/* ============== */
682static DEVICE_ATTR_RW(wake_up_pme);
683static DEVICE_ATTR_RW(wake_up_modem);
684static DEVICE_ATTR_RW(wake_up_lan);
685static DEVICE_ATTR_RW(wake_up_wlan);
686static DEVICE_ATTR_RW(wake_up_key);
687static DEVICE_ATTR_RW(wake_up_mouse);
688
689static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
690static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
691static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
692static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
693static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
694static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
695static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
696static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
697static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
698static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
699static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
700static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
701static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
702static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
703static DEVICE_ATTR(pwm1_enable,
704 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
705
706static struct attribute *compal_platform_attrs[] = {
707 &dev_attr_wake_up_pme.attr,
708 &dev_attr_wake_up_modem.attr,
709 &dev_attr_wake_up_lan.attr,
710 &dev_attr_wake_up_wlan.attr,
711 &dev_attr_wake_up_key.attr,
712 &dev_attr_wake_up_mouse.attr,
713 NULL
714};
715static const struct attribute_group compal_platform_attr_group = {
716 .attrs = compal_platform_attrs
717};
718
719static struct attribute *compal_hwmon_attrs[] = {
720 &dev_attr_pwm1_enable.attr,
721 &dev_attr_pwm1.attr,
722 &dev_attr_fan1_input.attr,
723 &dev_attr_temp1_input.attr,
724 &dev_attr_temp2_input.attr,
725 &dev_attr_temp3_input.attr,
726 &dev_attr_temp4_input.attr,
727 &dev_attr_temp5_input.attr,
728 &dev_attr_temp6_input.attr,
729 &dev_attr_temp1_label.attr,
730 &dev_attr_temp2_label.attr,
731 &dev_attr_temp3_label.attr,
732 &dev_attr_temp4_label.attr,
733 &dev_attr_temp5_label.attr,
734 &dev_attr_temp6_label.attr,
735 NULL
736};
737ATTRIBUTE_GROUPS(compal_hwmon);
738
739static int compal_probe(struct platform_device *);
740static int compal_remove(struct platform_device *);
741static struct platform_driver compal_driver = {
742 .driver = {
743 .name = DRIVER_NAME,
744 },
745 .probe = compal_probe,
746 .remove = compal_remove,
747};
748
749static enum power_supply_property compal_bat_properties[] = {
750 POWER_SUPPLY_PROP_STATUS,
751 POWER_SUPPLY_PROP_HEALTH,
752 POWER_SUPPLY_PROP_PRESENT,
753 POWER_SUPPLY_PROP_TECHNOLOGY,
754 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
755 POWER_SUPPLY_PROP_VOLTAGE_NOW,
756 POWER_SUPPLY_PROP_CURRENT_NOW,
757 POWER_SUPPLY_PROP_CURRENT_AVG,
758 POWER_SUPPLY_PROP_POWER_NOW,
759 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
760 POWER_SUPPLY_PROP_CHARGE_NOW,
761 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
762 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
763 POWER_SUPPLY_PROP_CAPACITY,
764 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
765 POWER_SUPPLY_PROP_TEMP,
766 POWER_SUPPLY_PROP_TEMP_AMBIENT,
767 POWER_SUPPLY_PROP_MODEL_NAME,
768 POWER_SUPPLY_PROP_MANUFACTURER,
769 POWER_SUPPLY_PROP_SERIAL_NUMBER,
770};
771
772static struct backlight_device *compalbl_device;
773
774static struct platform_device *compal_device;
775
776static struct rfkill *wifi_rfkill;
777static struct rfkill *bt_rfkill;
778
779
780
781
782
783/* =================================== */
784/* Initialization & clean-up functions */
785/* =================================== */
786
787static int dmi_check_cb(const struct dmi_system_id *id)
788{
789 pr_info("Identified laptop model '%s'\n", id->ident);
790 extra_features = false;
791 return 1;
792}
793
794static int dmi_check_cb_extra(const struct dmi_system_id *id)
795{
796 pr_info("Identified laptop model '%s', enabling extra features\n",
797 id->ident);
798 extra_features = true;
799 return 1;
800}
801
802static const struct dmi_system_id compal_dmi_table[] __initconst = {
803 {
804 .ident = "FL90/IFL90",
805 .matches = {
806 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
807 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
808 },
809 .callback = dmi_check_cb
810 },
811 {
812 .ident = "FL90/IFL90",
813 .matches = {
814 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
815 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
816 },
817 .callback = dmi_check_cb
818 },
819 {
820 .ident = "FL91/IFL91",
821 .matches = {
822 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
823 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
824 },
825 .callback = dmi_check_cb
826 },
827 {
828 .ident = "FL92/JFL92",
829 .matches = {
830 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
831 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
832 },
833 .callback = dmi_check_cb
834 },
835 {
836 .ident = "FT00/IFT00",
837 .matches = {
838 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
839 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
840 },
841 .callback = dmi_check_cb
842 },
843 {
844 .ident = "Dell Mini 9",
845 .matches = {
846 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
847 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
848 },
849 .callback = dmi_check_cb
850 },
851 {
852 .ident = "Dell Mini 10",
853 .matches = {
854 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
855 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
856 },
857 .callback = dmi_check_cb
858 },
859 {
860 .ident = "Dell Mini 10v",
861 .matches = {
862 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
863 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
864 },
865 .callback = dmi_check_cb
866 },
867 {
868 .ident = "Dell Mini 1012",
869 .matches = {
870 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
871 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
872 },
873 .callback = dmi_check_cb
874 },
875 {
876 .ident = "Dell Inspiron 11z",
877 .matches = {
878 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
879 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
880 },
881 .callback = dmi_check_cb
882 },
883 {
884 .ident = "Dell Mini 12",
885 .matches = {
886 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
887 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
888 },
889 .callback = dmi_check_cb
890 },
891 {
892 .ident = "JHL90",
893 .matches = {
894 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
895 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
896 },
897 .callback = dmi_check_cb_extra
898 },
899 {
900 .ident = "KHLB2",
901 .matches = {
902 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
903 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
904 },
905 .callback = dmi_check_cb_extra
906 },
907 { }
908};
909MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
910
911static const struct power_supply_desc psy_bat_desc = {
912 .name = DRIVER_NAME,
913 .type = POWER_SUPPLY_TYPE_BATTERY,
914 .properties = compal_bat_properties,
915 .num_properties = ARRAY_SIZE(compal_bat_properties),
916 .get_property = bat_get_property,
917 .set_property = bat_set_property,
918 .property_is_writeable = bat_writeable_property,
919};
920
921static void initialize_power_supply_data(struct compal_data *data)
922{
923 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
924 data->bat_manufacturer_name,
925 BAT_MANUFACTURER_NAME_LEN);
926 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
927
928 ec_read_sequence(BAT_MODEL_NAME_ADDR,
929 data->bat_model_name,
930 BAT_MODEL_NAME_LEN);
931 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
932
933 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
934 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
935}
936
937static void initialize_fan_control_data(struct compal_data *data)
938{
939 data->pwm_enable = 2; /* Keep motherboard in control for now */
940 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
941 if we take over... */
942}
943
944static int setup_rfkill(void)
945{
946 int ret;
947
948 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
949 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
950 (void *) WIRELESS_WLAN);
951 if (!wifi_rfkill)
952 return -ENOMEM;
953
954 ret = rfkill_register(wifi_rfkill);
955 if (ret)
956 goto err_wifi;
957
958 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
959 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
960 (void *) WIRELESS_BT);
961 if (!bt_rfkill) {
962 ret = -ENOMEM;
963 goto err_allocate_bt;
964 }
965 ret = rfkill_register(bt_rfkill);
966 if (ret)
967 goto err_register_bt;
968
969 return 0;
970
971err_register_bt:
972 rfkill_destroy(bt_rfkill);
973
974err_allocate_bt:
975 rfkill_unregister(wifi_rfkill);
976
977err_wifi:
978 rfkill_destroy(wifi_rfkill);
979
980 return ret;
981}
982
983static int __init compal_init(void)
984{
985 int ret;
986
987 if (acpi_disabled) {
988 pr_err("ACPI needs to be enabled for this driver to work!\n");
989 return -ENODEV;
990 }
991
992 if (!force && !dmi_check_system(compal_dmi_table)) {
993 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
994 return -ENODEV;
995 }
996
997 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
998 struct backlight_properties props;
999 memset(&props, 0, sizeof(struct backlight_properties));
1000 props.type = BACKLIGHT_PLATFORM;
1001 props.max_brightness = BACKLIGHT_LEVEL_MAX;
1002 compalbl_device = backlight_device_register(DRIVER_NAME,
1003 NULL, NULL,
1004 &compalbl_ops,
1005 &props);
1006 if (IS_ERR(compalbl_device))
1007 return PTR_ERR(compalbl_device);
1008 }
1009
1010 ret = platform_driver_register(&compal_driver);
1011 if (ret)
1012 goto err_backlight;
1013
1014 compal_device = platform_device_alloc(DRIVER_NAME, -1);
1015 if (!compal_device) {
1016 ret = -ENOMEM;
1017 goto err_platform_driver;
1018 }
1019
1020 ret = platform_device_add(compal_device); /* This calls compal_probe */
1021 if (ret)
1022 goto err_platform_device;
1023
1024 ret = setup_rfkill();
1025 if (ret)
1026 goto err_rfkill;
1027
1028 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1029 return 0;
1030
1031err_rfkill:
1032 platform_device_del(compal_device);
1033
1034err_platform_device:
1035 platform_device_put(compal_device);
1036
1037err_platform_driver:
1038 platform_driver_unregister(&compal_driver);
1039
1040err_backlight:
1041 backlight_device_unregister(compalbl_device);
1042
1043 return ret;
1044}
1045
1046static int compal_probe(struct platform_device *pdev)
1047{
1048 int err;
1049 struct compal_data *data;
1050 struct device *hwmon_dev;
1051 struct power_supply_config psy_cfg = {};
1052
1053 if (!extra_features)
1054 return 0;
1055
1056 /* Fan control */
1057 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
1058 if (!data)
1059 return -ENOMEM;
1060
1061 initialize_fan_control_data(data);
1062
1063 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
1064 if (err)
1065 return err;
1066
1067 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
1068 "compal", data,
1069 compal_hwmon_groups);
1070 if (IS_ERR(hwmon_dev)) {
1071 err = PTR_ERR(hwmon_dev);
1072 goto remove;
1073 }
1074
1075 /* Power supply */
1076 initialize_power_supply_data(data);
1077 psy_cfg.drv_data = data;
1078 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
1079 &psy_cfg);
1080 if (IS_ERR(data->psy)) {
1081 err = PTR_ERR(data->psy);
1082 goto remove;
1083 }
1084
1085 platform_set_drvdata(pdev, data);
1086
1087 return 0;
1088
1089remove:
1090 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1091 return err;
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
1107static int compal_remove(struct platform_device *pdev)
1108{
1109 struct compal_data *data;
1110
1111 if (!extra_features)
1112 return 0;
1113
1114 pr_info("Unloading: resetting fan control to motherboard\n");
1115 pwm_disable_control();
1116
1117 data = platform_get_drvdata(pdev);
1118 power_supply_unregister(data->psy);
1119
1120 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1121
1122 return 0;
1123}
1124
1125
1126module_init(compal_init);
1127module_exit(compal_cleanup);
1128
1129MODULE_AUTHOR("Cezary Jackiewicz");
1130MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1131MODULE_DESCRIPTION("Compal Laptop Support");
1132MODULE_VERSION(DRIVER_VERSION);
1133MODULE_LICENSE("GPL");