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(!backlight_is_blank(b));
328 return 0;
329 }
330
331 static const struct backlight_ops compalbl_ops = {
332 .get_brightness = bl_get_brightness,
333 .update_status = bl_update_status,
334 };
335
336
337 /* Wireless interface */
compal_rfkill_set(void * data,bool blocked)338 static int compal_rfkill_set(void *data, bool blocked)
339 {
340 unsigned long radio = (unsigned long) data;
341 u8 result = ec_read_u8(WIRELESS_ADDR);
342 u8 value;
343
344 if (!blocked)
345 value = (u8) (result | radio);
346 else
347 value = (u8) (result & ~radio);
348 ec_write(WIRELESS_ADDR, value);
349
350 return 0;
351 }
352
compal_rfkill_poll(struct rfkill * rfkill,void * data)353 static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
354 {
355 u8 result = ec_read_u8(WIRELESS_ADDR);
356 bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
357 rfkill_set_hw_state(rfkill, hw_blocked);
358 }
359
360 static const struct rfkill_ops compal_rfkill_ops = {
361 .poll = compal_rfkill_poll,
362 .set_block = compal_rfkill_set,
363 };
364
365
366 /* Wake_up interface */
367 #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
368 static ssize_t NAME##_show(struct device *dev, \
369 struct device_attribute *attr, char *buf) \
370 { \
371 return sprintf(buf, "%d\n", ((ec_read_u8(ADDR) & MASK) != 0)); \
372 } \
373 static ssize_t NAME##_store(struct device *dev, \
374 struct device_attribute *attr, const char *buf, size_t count) \
375 { \
376 int state; \
377 u8 old_val = ec_read_u8(ADDR); \
378 if (sscanf(buf, "%d", &state) != 1 || (state < 0 || state > 1)) \
379 return -EINVAL; \
380 ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
381 return count; \
382 }
383
SIMPLE_MASKED_STORE_SHOW(wake_up_pme,WAKE_UP_ADDR,WAKE_UP_PME)384 SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
385 SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
386 SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
387 SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
388 SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
389 SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
390
391 /* Fan control interface */
392 static ssize_t pwm_enable_show(struct device *dev,
393 struct device_attribute *attr, char *buf)
394 {
395 struct compal_data *data = dev_get_drvdata(dev);
396 return sprintf(buf, "%d\n", data->pwm_enable);
397 }
398
pwm_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)399 static ssize_t pwm_enable_store(struct device *dev,
400 struct device_attribute *attr, const char *buf, size_t count)
401 {
402 struct compal_data *data = dev_get_drvdata(dev);
403 long val;
404 int err;
405
406 err = kstrtol(buf, 10, &val);
407 if (err)
408 return err;
409 if (val < 0)
410 return -EINVAL;
411
412 data->pwm_enable = val;
413
414 switch (val) {
415 case 0: /* Full speed */
416 pwm_enable_control();
417 set_pwm(255);
418 break;
419 case 1: /* As set by pwm1 */
420 pwm_enable_control();
421 set_pwm(data->curr_pwm);
422 break;
423 default: /* Control by motherboard */
424 pwm_disable_control();
425 break;
426 }
427
428 return count;
429 }
430
pwm_show(struct device * dev,struct device_attribute * attr,char * buf)431 static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
432 char *buf)
433 {
434 struct compal_data *data = dev_get_drvdata(dev);
435 return sprintf(buf, "%hhu\n", data->curr_pwm);
436 }
437
pwm_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)438 static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
439 const char *buf, size_t count)
440 {
441 struct compal_data *data = dev_get_drvdata(dev);
442 long val;
443 int err;
444
445 err = kstrtol(buf, 10, &val);
446 if (err)
447 return err;
448 if (val < 0 || val > 255)
449 return -EINVAL;
450
451 data->curr_pwm = val;
452
453 if (data->pwm_enable != 1)
454 return count;
455 set_pwm(val);
456
457 return count;
458 }
459
fan_show(struct device * dev,struct device_attribute * attr,char * buf)460 static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
461 char *buf)
462 {
463 return sprintf(buf, "%d\n", get_fan_rpm());
464 }
465
466
467 /* Temperature interface */
468 #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
469 static ssize_t temp_##POSTFIX(struct device *dev, \
470 struct device_attribute *attr, char *buf) \
471 { \
472 return sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
473 } \
474 static ssize_t label_##POSTFIX(struct device *dev, \
475 struct device_attribute *attr, char *buf) \
476 { \
477 return sprintf(buf, "%s\n", LABEL); \
478 }
479
480 /* Labels as in service guide */
481 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP");
482 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL");
483 TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS");
484 TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge");
485 TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP");
486 TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90");
487
488
489 /* Power supply interface */
bat_status(void)490 static int bat_status(void)
491 {
492 u8 status0 = ec_read_u8(BAT_STATUS0);
493 u8 status1 = ec_read_u8(BAT_STATUS1);
494
495 if (status0 & BAT_S0_CHARGING)
496 return POWER_SUPPLY_STATUS_CHARGING;
497 if (status0 & BAT_S0_DISCHARGE)
498 return POWER_SUPPLY_STATUS_DISCHARGING;
499 if (status1 & BAT_S1_FULL)
500 return POWER_SUPPLY_STATUS_FULL;
501 return POWER_SUPPLY_STATUS_NOT_CHARGING;
502 }
503
bat_health(void)504 static int bat_health(void)
505 {
506 u8 status = ec_read_u8(BAT_STOP_CHARGE1);
507
508 if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
509 return POWER_SUPPLY_HEALTH_OVERHEAT;
510 if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
511 return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
512 if (status & BAT_STOP_CHRG1_BAD_CELL)
513 return POWER_SUPPLY_HEALTH_DEAD;
514 if (status & BAT_STOP_CHRG1_COMM_FAIL)
515 return POWER_SUPPLY_HEALTH_UNKNOWN;
516 return POWER_SUPPLY_HEALTH_GOOD;
517 }
518
bat_is_present(void)519 static int bat_is_present(void)
520 {
521 u8 status = ec_read_u8(BAT_STATUS2);
522 return ((status & BAT_S1_EXISTS) != 0);
523 }
524
bat_technology(void)525 static int bat_technology(void)
526 {
527 u8 status = ec_read_u8(BAT_STATUS1);
528
529 if (status & BAT_S1_LiION_OR_NiMH)
530 return POWER_SUPPLY_TECHNOLOGY_LION;
531 return POWER_SUPPLY_TECHNOLOGY_NiMH;
532 }
533
bat_capacity_level(void)534 static int bat_capacity_level(void)
535 {
536 u8 status0 = ec_read_u8(BAT_STATUS0);
537 u8 status1 = ec_read_u8(BAT_STATUS1);
538 u8 status2 = ec_read_u8(BAT_STATUS2);
539
540 if (status0 & BAT_S0_DISCHRG_CRITICAL
541 || status1 & BAT_S1_EMPTY
542 || status2 & BAT_S2_LOW_LOW)
543 return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
544 if (status0 & BAT_S0_LOW)
545 return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
546 if (status1 & BAT_S1_FULL)
547 return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
548 return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
549 }
550
bat_get_property(struct power_supply * psy,enum power_supply_property psp,union power_supply_propval * val)551 static int bat_get_property(struct power_supply *psy,
552 enum power_supply_property psp,
553 union power_supply_propval *val)
554 {
555 struct compal_data *data = power_supply_get_drvdata(psy);
556
557 switch (psp) {
558 case POWER_SUPPLY_PROP_STATUS:
559 val->intval = bat_status();
560 break;
561 case POWER_SUPPLY_PROP_HEALTH:
562 val->intval = bat_health();
563 break;
564 case POWER_SUPPLY_PROP_PRESENT:
565 val->intval = bat_is_present();
566 break;
567 case POWER_SUPPLY_PROP_TECHNOLOGY:
568 val->intval = bat_technology();
569 break;
570 case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
571 val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000;
572 break;
573 case POWER_SUPPLY_PROP_VOLTAGE_NOW:
574 val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000;
575 break;
576 case POWER_SUPPLY_PROP_CURRENT_NOW:
577 val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000;
578 break;
579 case POWER_SUPPLY_PROP_CURRENT_AVG:
580 val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000;
581 break;
582 case POWER_SUPPLY_PROP_POWER_NOW:
583 val->intval = ec_read_u8(BAT_POWER) * 1000000;
584 break;
585 case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
586 val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000;
587 break;
588 case POWER_SUPPLY_PROP_CHARGE_NOW:
589 val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000;
590 break;
591 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
592 val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
593 break;
594 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
595 val->intval = BAT_CHARGE_LIMIT_MAX;
596 break;
597 case POWER_SUPPLY_PROP_CAPACITY:
598 val->intval = ec_read_u8(BAT_CAPACITY);
599 break;
600 case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
601 val->intval = bat_capacity_level();
602 break;
603 /* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
604 * the number of degrees, whereas BAT_TEMP is somewhat more
605 * complicated. It looks like this is a negative nember with a
606 * 100/256 divider and an offset of 222. Both were determined
607 * experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
608 case POWER_SUPPLY_PROP_TEMP:
609 val->intval = ((222 - (int)ec_read_u8(BAT_TEMP)) * 1000) >> 8;
610 break;
611 case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
612 val->intval = ec_read_s8(BAT_TEMP_AVG) * 10;
613 break;
614 /* Neither the model name nor manufacturer name work for me. */
615 case POWER_SUPPLY_PROP_MODEL_NAME:
616 val->strval = data->bat_model_name;
617 break;
618 case POWER_SUPPLY_PROP_MANUFACTURER:
619 val->strval = data->bat_manufacturer_name;
620 break;
621 case POWER_SUPPLY_PROP_SERIAL_NUMBER:
622 val->strval = data->bat_serial_number;
623 break;
624 default:
625 break;
626 }
627 return 0;
628 }
629
bat_set_property(struct power_supply * psy,enum power_supply_property psp,const union power_supply_propval * val)630 static int bat_set_property(struct power_supply *psy,
631 enum power_supply_property psp,
632 const union power_supply_propval *val)
633 {
634 int level;
635
636 switch (psp) {
637 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
638 level = val->intval;
639 if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
640 return -EINVAL;
641 if (ec_write(BAT_CHARGE_LIMIT, level) < 0)
642 return -EIO;
643 break;
644 default:
645 break;
646 }
647 return 0;
648 }
649
bat_writeable_property(struct power_supply * psy,enum power_supply_property psp)650 static int bat_writeable_property(struct power_supply *psy,
651 enum power_supply_property psp)
652 {
653 switch (psp) {
654 case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
655 return 1;
656 default:
657 return 0;
658 }
659 }
660
661
662
663
664 /* ============== */
665 /* Driver Globals */
666 /* ============== */
667 static DEVICE_ATTR_RW(wake_up_pme);
668 static DEVICE_ATTR_RW(wake_up_modem);
669 static DEVICE_ATTR_RW(wake_up_lan);
670 static DEVICE_ATTR_RW(wake_up_wlan);
671 static DEVICE_ATTR_RW(wake_up_key);
672 static DEVICE_ATTR_RW(wake_up_mouse);
673
674 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
675 static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
676 static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
677 static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
678 static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
679 static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
680 static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
681 static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
682 static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
683 static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
684 static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
685 static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
686 static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
687 static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
688 static DEVICE_ATTR(pwm1_enable,
689 S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
690
691 static struct attribute *compal_platform_attrs[] = {
692 &dev_attr_wake_up_pme.attr,
693 &dev_attr_wake_up_modem.attr,
694 &dev_attr_wake_up_lan.attr,
695 &dev_attr_wake_up_wlan.attr,
696 &dev_attr_wake_up_key.attr,
697 &dev_attr_wake_up_mouse.attr,
698 NULL
699 };
700 static const struct attribute_group compal_platform_attr_group = {
701 .attrs = compal_platform_attrs
702 };
703
704 static struct attribute *compal_hwmon_attrs[] = {
705 &dev_attr_pwm1_enable.attr,
706 &dev_attr_pwm1.attr,
707 &dev_attr_fan1_input.attr,
708 &dev_attr_temp1_input.attr,
709 &dev_attr_temp2_input.attr,
710 &dev_attr_temp3_input.attr,
711 &dev_attr_temp4_input.attr,
712 &dev_attr_temp5_input.attr,
713 &dev_attr_temp6_input.attr,
714 &dev_attr_temp1_label.attr,
715 &dev_attr_temp2_label.attr,
716 &dev_attr_temp3_label.attr,
717 &dev_attr_temp4_label.attr,
718 &dev_attr_temp5_label.attr,
719 &dev_attr_temp6_label.attr,
720 NULL
721 };
722 ATTRIBUTE_GROUPS(compal_hwmon);
723
724 static enum power_supply_property compal_bat_properties[] = {
725 POWER_SUPPLY_PROP_STATUS,
726 POWER_SUPPLY_PROP_HEALTH,
727 POWER_SUPPLY_PROP_PRESENT,
728 POWER_SUPPLY_PROP_TECHNOLOGY,
729 POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
730 POWER_SUPPLY_PROP_VOLTAGE_NOW,
731 POWER_SUPPLY_PROP_CURRENT_NOW,
732 POWER_SUPPLY_PROP_CURRENT_AVG,
733 POWER_SUPPLY_PROP_POWER_NOW,
734 POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
735 POWER_SUPPLY_PROP_CHARGE_NOW,
736 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
737 POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
738 POWER_SUPPLY_PROP_CAPACITY,
739 POWER_SUPPLY_PROP_CAPACITY_LEVEL,
740 POWER_SUPPLY_PROP_TEMP,
741 POWER_SUPPLY_PROP_TEMP_AMBIENT,
742 POWER_SUPPLY_PROP_MODEL_NAME,
743 POWER_SUPPLY_PROP_MANUFACTURER,
744 POWER_SUPPLY_PROP_SERIAL_NUMBER,
745 };
746
747 static struct backlight_device *compalbl_device;
748
749 static struct platform_device *compal_device;
750
751 static struct rfkill *wifi_rfkill;
752 static struct rfkill *bt_rfkill;
753
754
755
756
757
758 /* =================================== */
759 /* Initialization & clean-up functions */
760 /* =================================== */
761
dmi_check_cb(const struct dmi_system_id * id)762 static int dmi_check_cb(const struct dmi_system_id *id)
763 {
764 pr_info("Identified laptop model '%s'\n", id->ident);
765 extra_features = false;
766 return 1;
767 }
768
dmi_check_cb_extra(const struct dmi_system_id * id)769 static int dmi_check_cb_extra(const struct dmi_system_id *id)
770 {
771 pr_info("Identified laptop model '%s', enabling extra features\n",
772 id->ident);
773 extra_features = true;
774 return 1;
775 }
776
777 static const struct dmi_system_id compal_dmi_table[] __initconst = {
778 {
779 .ident = "FL90/IFL90",
780 .matches = {
781 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
782 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
783 },
784 .callback = dmi_check_cb
785 },
786 {
787 .ident = "FL90/IFL90",
788 .matches = {
789 DMI_MATCH(DMI_BOARD_NAME, "IFL90"),
790 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
791 },
792 .callback = dmi_check_cb
793 },
794 {
795 .ident = "FL91/IFL91",
796 .matches = {
797 DMI_MATCH(DMI_BOARD_NAME, "IFL91"),
798 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
799 },
800 .callback = dmi_check_cb
801 },
802 {
803 .ident = "FL92/JFL92",
804 .matches = {
805 DMI_MATCH(DMI_BOARD_NAME, "JFL92"),
806 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
807 },
808 .callback = dmi_check_cb
809 },
810 {
811 .ident = "FT00/IFT00",
812 .matches = {
813 DMI_MATCH(DMI_BOARD_NAME, "IFT00"),
814 DMI_MATCH(DMI_BOARD_VERSION, "IFT00"),
815 },
816 .callback = dmi_check_cb
817 },
818 {
819 .ident = "Dell Mini 9",
820 .matches = {
821 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
822 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
823 },
824 .callback = dmi_check_cb
825 },
826 {
827 .ident = "Dell Mini 10",
828 .matches = {
829 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
830 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
831 },
832 .callback = dmi_check_cb
833 },
834 {
835 .ident = "Dell Mini 10v",
836 .matches = {
837 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
838 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
839 },
840 .callback = dmi_check_cb
841 },
842 {
843 .ident = "Dell Mini 1012",
844 .matches = {
845 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
846 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012"),
847 },
848 .callback = dmi_check_cb
849 },
850 {
851 .ident = "Dell Inspiron 11z",
852 .matches = {
853 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
854 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
855 },
856 .callback = dmi_check_cb
857 },
858 {
859 .ident = "Dell Mini 12",
860 .matches = {
861 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
862 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
863 },
864 .callback = dmi_check_cb
865 },
866 {
867 .ident = "JHL90",
868 .matches = {
869 DMI_MATCH(DMI_BOARD_NAME, "JHL90"),
870 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
871 },
872 .callback = dmi_check_cb_extra
873 },
874 {
875 .ident = "KHLB2",
876 .matches = {
877 DMI_MATCH(DMI_BOARD_NAME, "KHLB2"),
878 DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE"),
879 },
880 .callback = dmi_check_cb_extra
881 },
882 { }
883 };
884 MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
885
886 static const struct power_supply_desc psy_bat_desc = {
887 .name = DRIVER_NAME,
888 .type = POWER_SUPPLY_TYPE_BATTERY,
889 .properties = compal_bat_properties,
890 .num_properties = ARRAY_SIZE(compal_bat_properties),
891 .get_property = bat_get_property,
892 .set_property = bat_set_property,
893 .property_is_writeable = bat_writeable_property,
894 };
895
initialize_power_supply_data(struct compal_data * data)896 static void initialize_power_supply_data(struct compal_data *data)
897 {
898 ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
899 data->bat_manufacturer_name,
900 BAT_MANUFACTURER_NAME_LEN);
901 data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0;
902
903 ec_read_sequence(BAT_MODEL_NAME_ADDR,
904 data->bat_model_name,
905 BAT_MODEL_NAME_LEN);
906 data->bat_model_name[BAT_MODEL_NAME_LEN] = 0;
907
908 scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1, "%d",
909 ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
910 }
911
initialize_fan_control_data(struct compal_data * data)912 static void initialize_fan_control_data(struct compal_data *data)
913 {
914 data->pwm_enable = 2; /* Keep motherboard in control for now */
915 data->curr_pwm = 255; /* Try not to cause a CPU_on_fire exception
916 if we take over... */
917 }
918
setup_rfkill(void)919 static int setup_rfkill(void)
920 {
921 int ret;
922
923 wifi_rfkill = rfkill_alloc("compal-wifi", &compal_device->dev,
924 RFKILL_TYPE_WLAN, &compal_rfkill_ops,
925 (void *) WIRELESS_WLAN);
926 if (!wifi_rfkill)
927 return -ENOMEM;
928
929 ret = rfkill_register(wifi_rfkill);
930 if (ret)
931 goto err_wifi;
932
933 bt_rfkill = rfkill_alloc("compal-bluetooth", &compal_device->dev,
934 RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
935 (void *) WIRELESS_BT);
936 if (!bt_rfkill) {
937 ret = -ENOMEM;
938 goto err_allocate_bt;
939 }
940 ret = rfkill_register(bt_rfkill);
941 if (ret)
942 goto err_register_bt;
943
944 return 0;
945
946 err_register_bt:
947 rfkill_destroy(bt_rfkill);
948
949 err_allocate_bt:
950 rfkill_unregister(wifi_rfkill);
951
952 err_wifi:
953 rfkill_destroy(wifi_rfkill);
954
955 return ret;
956 }
957
compal_probe(struct platform_device * pdev)958 static int compal_probe(struct platform_device *pdev)
959 {
960 int err;
961 struct compal_data *data;
962 struct device *hwmon_dev;
963 struct power_supply_config psy_cfg = {};
964
965 if (!extra_features)
966 return 0;
967
968 /* Fan control */
969 data = devm_kzalloc(&pdev->dev, sizeof(struct compal_data), GFP_KERNEL);
970 if (!data)
971 return -ENOMEM;
972
973 initialize_fan_control_data(data);
974
975 err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
976 if (err)
977 return err;
978
979 hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
980 "compal", data,
981 compal_hwmon_groups);
982 if (IS_ERR(hwmon_dev)) {
983 err = PTR_ERR(hwmon_dev);
984 goto remove;
985 }
986
987 /* Power supply */
988 initialize_power_supply_data(data);
989 psy_cfg.drv_data = data;
990 data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
991 &psy_cfg);
992 if (IS_ERR(data->psy)) {
993 err = PTR_ERR(data->psy);
994 goto remove;
995 }
996
997 platform_set_drvdata(pdev, data);
998
999 return 0;
1000
1001 remove:
1002 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1003 return err;
1004 }
1005
compal_remove(struct platform_device * pdev)1006 static void compal_remove(struct platform_device *pdev)
1007 {
1008 struct compal_data *data;
1009
1010 if (!extra_features)
1011 return;
1012
1013 pr_info("Unloading: resetting fan control to motherboard\n");
1014 pwm_disable_control();
1015
1016 data = platform_get_drvdata(pdev);
1017 power_supply_unregister(data->psy);
1018
1019 sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
1020 }
1021
1022 static struct platform_driver compal_driver = {
1023 .driver = {
1024 .name = DRIVER_NAME,
1025 },
1026 .probe = compal_probe,
1027 .remove_new = compal_remove,
1028 };
1029
compal_init(void)1030 static int __init compal_init(void)
1031 {
1032 int ret;
1033
1034 if (acpi_disabled) {
1035 pr_err("ACPI needs to be enabled for this driver to work!\n");
1036 return -ENODEV;
1037 }
1038
1039 if (!force && !dmi_check_system(compal_dmi_table)) {
1040 pr_err("Motherboard not recognized (You could try the module's force-parameter)\n");
1041 return -ENODEV;
1042 }
1043
1044 if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
1045 struct backlight_properties props;
1046 memset(&props, 0, sizeof(struct backlight_properties));
1047 props.type = BACKLIGHT_PLATFORM;
1048 props.max_brightness = BACKLIGHT_LEVEL_MAX;
1049 compalbl_device = backlight_device_register(DRIVER_NAME,
1050 NULL, NULL,
1051 &compalbl_ops,
1052 &props);
1053 if (IS_ERR(compalbl_device))
1054 return PTR_ERR(compalbl_device);
1055 }
1056
1057 ret = platform_driver_register(&compal_driver);
1058 if (ret)
1059 goto err_backlight;
1060
1061 compal_device = platform_device_alloc(DRIVER_NAME, PLATFORM_DEVID_NONE);
1062 if (!compal_device) {
1063 ret = -ENOMEM;
1064 goto err_platform_driver;
1065 }
1066
1067 ret = platform_device_add(compal_device); /* This calls compal_probe */
1068 if (ret)
1069 goto err_platform_device;
1070
1071 ret = setup_rfkill();
1072 if (ret)
1073 goto err_rfkill;
1074
1075 pr_info("Driver " DRIVER_VERSION " successfully loaded\n");
1076 return 0;
1077
1078 err_rfkill:
1079 platform_device_del(compal_device);
1080
1081 err_platform_device:
1082 platform_device_put(compal_device);
1083
1084 err_platform_driver:
1085 platform_driver_unregister(&compal_driver);
1086
1087 err_backlight:
1088 backlight_device_unregister(compalbl_device);
1089
1090 return ret;
1091 }
1092
compal_cleanup(void)1093 static void __exit compal_cleanup(void)
1094 {
1095 platform_device_unregister(compal_device);
1096 platform_driver_unregister(&compal_driver);
1097 backlight_device_unregister(compalbl_device);
1098 rfkill_unregister(wifi_rfkill);
1099 rfkill_unregister(bt_rfkill);
1100 rfkill_destroy(wifi_rfkill);
1101 rfkill_destroy(bt_rfkill);
1102
1103 pr_info("Driver unloaded\n");
1104 }
1105
1106 module_init(compal_init);
1107 module_exit(compal_cleanup);
1108
1109 MODULE_AUTHOR("Cezary Jackiewicz");
1110 MODULE_AUTHOR("Roald Frederickx (roald.frederickx@gmail.com)");
1111 MODULE_DESCRIPTION("Compal Laptop Support");
1112 MODULE_VERSION(DRIVER_VERSION);
1113 MODULE_LICENSE("GPL");
1114