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