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