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 /* ======= */
163 struct 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 /* =============== */
180 static bool force;
181 module_param(force, bool, 0);
182 MODULE_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 */
186 static 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 */
200 static 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 */
ec_read_u8(u8 addr)227 static u8 ec_read_u8(u8 addr)
228 {
229 u8 value = 0;
230 ec_read(addr, &value);
231 return value;
232 }
233
ec_read_s8(u8 addr)234 static s8 ec_read_s8(u8 addr)
235 {
236 return (s8)ec_read_u8(addr);
237 }
238
ec_read_u16(u8 addr)239 static 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
ec_read_s16(u8 addr)247 static s16 ec_read_s16(u8 addr)
248 {
249 return (s16) ec_read_u16(addr);
250 }
251
ec_read_sequence(u8 addr,u8 * buf,int len)252 static 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 */
set_backlight_level(int level)261 static 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
get_backlight_level(void)271 static int get_backlight_level(void)
272 {
273 return (int) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
274 }
275
set_backlight_state(bool on)276 static 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 */
pwm_enable_control(void)284 static 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
pwm_disable_control(void)290 static 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
set_pwm(int pwm)296 static void set_pwm(int pwm)
297 {
298 ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1, NULL, 0);
299 }
300
get_fan_rpm(void)301 static 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 */
bl_get_brightness(struct backlight_device * b)316 static int bl_get_brightness(struct backlight_device *b)
317 {
318 return get_backlight_level();
319 }
320
bl_update_status(struct backlight_device * b)321 static 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
333 static const struct backlight_ops compalbl_ops = {
334 .get_brightness = bl_get_brightness,
335 .update_status = bl_update_status,
336 };
337
338
339 /* Wireless interface */
compal_rfkill_set(void * data,bool blocked)340 static 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
compal_rfkill_poll(struct rfkill * rfkill,void * data)355 static 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
362 static 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) \
370 static 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 } \
375 static 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
SIMPLE_MASKED_STORE_SHOW(wake_up_pme,WAKE_UP_ADDR,WAKE_UP_PME)386 SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
387 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
388 SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
389 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
390 SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
391 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
392
393 /* Fan control interface */
394 static 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
pwm_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)401 static 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
pwm_show(struct device * dev,struct device_attribute * attr,char * buf)433 static 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
pwm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)440 static 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
fan_show(struct device * dev,struct device_attribute * attr,char * buf)462 static 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) \
471 static 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 } \
476 static 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 */
483 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
484 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
485 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
486 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
487 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
488 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
489
490
491 /* Power supply interface */
bat_status(void)492 static 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
bat_health(void)506 static 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
bat_is_present(void)521 static int bat_is_present(void)
522 {
523 u8 status = ec_read_u8(BAT_STATUS2);
524 return ((status & BAT_S1_EXISTS) != 0);
525 }
526
bat_technology(void)527 static 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
bat_capacity_level(void)536 static 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
bat_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)553 static 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
bat_set_property(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)632 static 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
bat_writeable_property(struct power_supply * psy,enum power_supply_property psp)652 static 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 /* ============== */
669 static DEVICE_ATTR_RW(wake_up_pme);
670 static DEVICE_ATTR_RW(wake_up_modem);
671 static DEVICE_ATTR_RW(wake_up_lan);
672 static DEVICE_ATTR_RW(wake_up_wlan);
673 static DEVICE_ATTR_RW(wake_up_key);
674 static DEVICE_ATTR_RW(wake_up_mouse);
675
676 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
677 static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
678 static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
679 static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
680 static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
681 static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
682 static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
683 static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
684 static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
685 static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
686 static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
687 static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
688 static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
689 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
690 static DEVICE_ATTR(pwm1_enable,
691 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
692
693 static 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 };
702 static const struct attribute_group compal_platform_attr_group = {
703 .attrs = compal_platform_attrs
704 };
705
706 static 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 };
724 ATTRIBUTE_GROUPS(compal_hwmon);
725
726 static int compal_probe(struct platform_device *);
727 static int compal_remove(struct platform_device *);
728 static struct platform_driver compal_driver = {
729 .driver = {
730 .name = DRIVER_NAME,
731 },
732 .probe = compal_probe,
733 .remove = compal_remove,
734 };
735
736 static 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
759 static struct backlight_device *compalbl_device;
760
761 static struct platform_device *compal_device;
762
763 static struct rfkill *wifi_rfkill;
764 static struct rfkill *bt_rfkill;
765
766
767
768
769
770 /* =================================== */
771 /* Initialization & clean-up functions */
772 /* =================================== */
773
dmi_check_cb(const struct dmi_system_id * id)774 static 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
dmi_check_cb_extra(const struct dmi_system_id * id)781 static 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
789 static 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 };
896 MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
897
898 static 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
initialize_power_supply_data(struct compal_data * data)908 static 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
initialize_fan_control_data(struct compal_data * data)924 static 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
setup_rfkill(void)931 static 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
958 err_register_bt:
959 rfkill_destroy(bt_rfkill);
960
961 err_allocate_bt:
962 rfkill_unregister(wifi_rfkill);
963
964 err_wifi:
965 rfkill_destroy(wifi_rfkill);
966
967 return ret;
968 }
969
compal_init(void)970 static 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
1018 err_rfkill:
1019 platform_device_del(compal_device);
1020
1021 err_platform_device:
1022 platform_device_put(compal_device);
1023
1024 err_platform_driver:
1025 platform_driver_unregister(&compal_driver);
1026
1027 err_backlight:
1028 backlight_device_unregister(compalbl_device);
1029
1030 return ret;
1031 }
1032
compal_probe(struct platform_device * pdev)1033 static 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
1076 remove:
1077 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1078 return err;
1079 }
1080
compal_cleanup(void)1081 static 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
compal_remove(struct platform_device * pdev)1094 static 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
1113 module_init(compal_init);
1114 module_exit(compal_cleanup);
1115
1116 MODULE_AUTHOR("Cezary Jackiewicz");
1117 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1118 MODULE_DESCRIPTION("Compal Laptop Support");
1119 MODULE_VERSION(DRIVER_VERSION);
1120 MODULE_LICENSE("GPL");
1121