1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Platform driver for OneXPlayer and AOKZOE devices.
4 *
5 * Fan control is provided via pwm interface in the range [0-255].
6 * Old AMD boards use [0-100] as range in the EC, the written value is
7 * scaled to accommodate for that. Newer boards like the mini PRO and
8 * AOKZOE are not scaled but have the same EC layout. Newer models
9 * like the 2 and X1 are [0-184] and are scaled to 0-255. OrangePi
10 * are [1-244] and scaled to 0-255.
11 *
12 * Copyright (C) 2022 Joaquín I. Aramendía <samsagax@gmail.com>
13 * Copyright (C) 2024 Derek J. Clark <derekjohn.clark@gmail.com>
14 * Copyright (C) 2025-2026 Antheas Kapenekakis <lkml@antheas.dev>
15 */
16
17 #include <linux/acpi.h>
18 #include <linux/dmi.h>
19 #include <linux/hwmon.h>
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/platform_device.h>
24 #include <linux/processor.h>
25 #include <acpi/battery.h>
26
27 /* Handle ACPI lock mechanism */
28 static u32 oxp_mutex;
29
30 #define ACPI_LOCK_DELAY_MS 500
31
lock_global_acpi_lock(void)32 static bool lock_global_acpi_lock(void)
33 {
34 return ACPI_SUCCESS(acpi_acquire_global_lock(ACPI_LOCK_DELAY_MS, &oxp_mutex));
35 }
36
unlock_global_acpi_lock(void)37 static bool unlock_global_acpi_lock(void)
38 {
39 return ACPI_SUCCESS(acpi_release_global_lock(oxp_mutex));
40 }
41
42 enum oxp_board {
43 aok_zoe_a1 = 1,
44 orange_pi_neo,
45 oxp_2,
46 oxp_fly,
47 oxp_mini_amd,
48 oxp_mini_amd_a07,
49 oxp_mini_amd_pro,
50 oxp_x1,
51 oxp_g1_i,
52 oxp_g1_a,
53 };
54
55 static enum oxp_board board;
56 static struct device *oxp_dev;
57
58 /* Fan reading and PWM */
59 #define OXP_SENSOR_FAN_REG 0x76 /* Fan reading is 2 registers long */
60 #define OXP_2_SENSOR_FAN_REG 0x58 /* Fan reading is 2 registers long */
61 #define OXP_SENSOR_PWM_ENABLE_REG 0x4A /* PWM enable is 1 register long */
62 #define OXP_SENSOR_PWM_REG 0x4B /* PWM reading is 1 register long */
63 #define PWM_MODE_AUTO 0x00
64 #define PWM_MODE_MANUAL 0x01
65
66 /* OrangePi fan reading and PWM */
67 #define ORANGEPI_SENSOR_FAN_REG 0x78 /* Fan reading is 2 registers long */
68 #define ORANGEPI_SENSOR_PWM_ENABLE_REG 0x40 /* PWM enable is 1 register long */
69 #define ORANGEPI_SENSOR_PWM_REG 0x38 /* PWM reading is 1 register long */
70
71 /* Turbo button takeover function
72 * Different boards have different values and EC registers
73 * for the same function
74 */
75 #define OXP_TURBO_SWITCH_REG 0xF1 /* Mini Pro, OneXFly, AOKZOE */
76 #define OXP_2_TURBO_SWITCH_REG 0xEB /* OXP2 and X1 */
77 #define OXP_MINI_TURBO_SWITCH_REG 0x1E /* Mini AO7 */
78
79 #define OXP_MINI_TURBO_TAKE_VAL 0x01 /* Mini AO7 */
80 #define OXP_TURBO_TAKE_VAL 0x40 /* All other models */
81
82 /* X1 Turbo LED */
83 #define OXP_X1_TURBO_LED_REG 0x57
84
85 #define OXP_X1_TURBO_LED_OFF 0x01
86 #define OXP_X1_TURBO_LED_ON 0x02
87
88 /* Battery extension settings */
89 #define EC_CHARGE_CONTROL_BEHAVIOURS (BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO) | \
90 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE) | \
91 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE_AWAKE))
92
93 #define OXP_X1_CHARGE_LIMIT_REG 0xA3 /* X1 charge limit (%) */
94 #define OXP_X1_CHARGE_INHIBIT_REG 0xA4 /* X1 bypass charging */
95
96 #define OXP_X1_CHARGE_INHIBIT_MASK_AWAKE 0x01
97 /* X1 Mask is 0x0A, F1Pro is 0x02 but the extra bit on the X1 does nothing. */
98 #define OXP_X1_CHARGE_INHIBIT_MASK_OFF 0x02
99 #define OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS (OXP_X1_CHARGE_INHIBIT_MASK_AWAKE | \
100 OXP_X1_CHARGE_INHIBIT_MASK_OFF)
101
102 static const struct dmi_system_id dmi_table[] = {
103 {
104 .matches = {
105 DMI_MATCH(DMI_BOARD_VENDOR, "AOKZOE"),
106 DMI_EXACT_MATCH(DMI_BOARD_NAME, "AOKZOE A1 AR07"),
107 },
108 .driver_data = (void *)aok_zoe_a1,
109 },
110 {
111 .matches = {
112 DMI_MATCH(DMI_BOARD_VENDOR, "AOKZOE"),
113 DMI_EXACT_MATCH(DMI_BOARD_NAME, "AOKZOE A1 Pro"),
114 },
115 .driver_data = (void *)aok_zoe_a1,
116 },
117 {
118 .matches = {
119 DMI_MATCH(DMI_BOARD_VENDOR, "AOKZOE"),
120 DMI_EXACT_MATCH(DMI_BOARD_NAME, "AOKZOE A2 Pro"),
121 },
122 .driver_data = (void *)aok_zoe_a1,
123 },
124 {
125 .matches = {
126 DMI_MATCH(DMI_BOARD_VENDOR, "AOKZOE"),
127 DMI_EXACT_MATCH(DMI_BOARD_NAME, "AOKZOE A1X"),
128 },
129 .driver_data = (void *)oxp_fly,
130 },
131 {
132 .matches = {
133 DMI_MATCH(DMI_BOARD_VENDOR, "OrangePi"),
134 DMI_EXACT_MATCH(DMI_BOARD_NAME, "NEO-01"),
135 },
136 .driver_data = (void *)orange_pi_neo,
137 },
138 {
139 .matches = {
140 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
141 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONE XPLAYER"),
142 },
143 .driver_data = (void *)oxp_mini_amd,
144 },
145 {
146 .matches = {
147 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
148 DMI_MATCH(DMI_BOARD_NAME, "ONEXPLAYER 2"),
149 },
150 .driver_data = (void *)oxp_2,
151 },
152 {
153 .matches = {
154 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
155 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER APEX"),
156 },
157 .driver_data = (void *)oxp_fly,
158 },
159 {
160 .matches = {
161 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
162 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1"),
163 },
164 .driver_data = (void *)oxp_fly,
165 },
166 {
167 .matches = {
168 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
169 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1 EVA-01"),
170 },
171 .driver_data = (void *)oxp_fly,
172 },
173 {
174 .matches = {
175 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
176 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1 OLED"),
177 },
178 .driver_data = (void *)oxp_fly,
179 },
180 {
181 .matches = {
182 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
183 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1L"),
184 },
185 .driver_data = (void *)oxp_fly,
186 },
187 {
188 .matches = {
189 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
190 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1Pro"),
191 },
192 .driver_data = (void *)oxp_fly,
193 },
194 {
195 .matches = {
196 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
197 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER F1 EVA-02"),
198 },
199 .driver_data = (void *)oxp_fly,
200 },
201 {
202 .matches = {
203 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
204 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER G1 A"),
205 },
206 .driver_data = (void *)oxp_g1_a,
207 },
208 {
209 .matches = {
210 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
211 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER SUPER X"),
212 },
213 .driver_data = (void *)oxp_g1_a,
214 },
215 {
216 .matches = {
217 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
218 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER G1 i"),
219 },
220 .driver_data = (void *)oxp_g1_i,
221 },
222 {
223 .matches = {
224 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
225 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER mini A07"),
226 },
227 .driver_data = (void *)oxp_mini_amd_a07,
228 },
229 {
230 .matches = {
231 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
232 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER Mini Pro"),
233 },
234 .driver_data = (void *)oxp_mini_amd_pro,
235 },
236 {
237 .matches = {
238 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
239 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1z"),
240 },
241 .driver_data = (void *)oxp_x1,
242 },
243 {
244 .matches = {
245 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
246 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1 A"),
247 },
248 .driver_data = (void *)oxp_x1,
249 },
250 {
251 .matches = {
252 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
253 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1 i"),
254 },
255 .driver_data = (void *)oxp_x1,
256 },
257 {
258 .matches = {
259 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
260 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1Air"),
261 },
262 .driver_data = (void *)oxp_x1,
263 },
264 {
265 .matches = {
266 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
267 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1 mini"),
268 },
269 .driver_data = (void *)oxp_x1,
270 },
271 {
272 .matches = {
273 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
274 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1Mini Pro"),
275 },
276 .driver_data = (void *)oxp_x1,
277 },
278 {
279 .matches = {
280 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
281 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1Pro"),
282 },
283 .driver_data = (void *)oxp_x1,
284 },
285 {
286 .matches = {
287 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
288 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X1Pro EVA-02"),
289 },
290 .driver_data = (void *)oxp_x1,
291 },
292 {
293 .matches = {
294 DMI_MATCH(DMI_BOARD_VENDOR, "ONE-NETBOOK"),
295 DMI_EXACT_MATCH(DMI_BOARD_NAME, "ONEXPLAYER X2Mini PRO"),
296 },
297 .driver_data = (void *)oxp_fly,
298 },
299 {},
300 };
301
302 /* Helper functions to handle EC read/write */
read_from_ec(u8 reg,int size,long * val)303 static int read_from_ec(u8 reg, int size, long *val)
304 {
305 u8 buffer;
306 int ret;
307 int i;
308
309 if (!lock_global_acpi_lock())
310 return -EBUSY;
311
312 *val = 0;
313 for (i = 0; i < size; i++) {
314 ret = ec_read(reg + i, &buffer);
315 if (ret)
316 return ret;
317 *val <<= i * 8;
318 *val += buffer;
319 }
320
321 if (!unlock_global_acpi_lock())
322 return -EBUSY;
323
324 return 0;
325 }
326
write_to_ec(u8 reg,u8 value)327 static int write_to_ec(u8 reg, u8 value)
328 {
329 int ret;
330
331 if (!lock_global_acpi_lock())
332 return -EBUSY;
333
334 ret = ec_write(reg, value);
335
336 if (!unlock_global_acpi_lock())
337 return -EBUSY;
338
339 return ret;
340 }
341
342 /* Callbacks for turbo toggle attribute */
tt_toggle_is_visible(struct kobject * kobj,struct attribute * attr,int n)343 static umode_t tt_toggle_is_visible(struct kobject *kobj,
344 struct attribute *attr, int n)
345 {
346 switch (board) {
347 case aok_zoe_a1:
348 case oxp_2:
349 case oxp_fly:
350 case oxp_mini_amd_a07:
351 case oxp_mini_amd_pro:
352 case oxp_x1:
353 case oxp_g1_i:
354 case oxp_g1_a:
355 return attr->mode;
356 default:
357 break;
358 }
359 return 0;
360 }
361
tt_toggle_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)362 static ssize_t tt_toggle_store(struct device *dev,
363 struct device_attribute *attr, const char *buf,
364 size_t count)
365 {
366 u8 reg, mask, val;
367 long raw_val;
368 bool enable;
369 int ret;
370
371 ret = kstrtobool(buf, &enable);
372 if (ret)
373 return ret;
374
375 switch (board) {
376 case oxp_mini_amd_a07:
377 reg = OXP_MINI_TURBO_SWITCH_REG;
378 mask = OXP_MINI_TURBO_TAKE_VAL;
379 break;
380 case aok_zoe_a1:
381 case oxp_fly:
382 case oxp_mini_amd_pro:
383 case oxp_g1_a:
384 reg = OXP_TURBO_SWITCH_REG;
385 mask = OXP_TURBO_TAKE_VAL;
386 break;
387 case oxp_2:
388 case oxp_x1:
389 case oxp_g1_i:
390 reg = OXP_2_TURBO_SWITCH_REG;
391 mask = OXP_TURBO_TAKE_VAL;
392 break;
393 default:
394 return -EINVAL;
395 }
396
397 ret = read_from_ec(reg, 1, &raw_val);
398 if (ret)
399 return ret;
400
401 val = raw_val;
402 if (enable)
403 val |= mask;
404 else
405 val &= ~mask;
406
407 ret = write_to_ec(reg, val);
408 if (ret)
409 return ret;
410
411 return count;
412 }
413
tt_toggle_show(struct device * dev,struct device_attribute * attr,char * buf)414 static ssize_t tt_toggle_show(struct device *dev,
415 struct device_attribute *attr, char *buf)
416 {
417 u8 reg, mask;
418 int retval;
419 long val;
420
421 switch (board) {
422 case oxp_mini_amd_a07:
423 reg = OXP_MINI_TURBO_SWITCH_REG;
424 mask = OXP_MINI_TURBO_TAKE_VAL;
425 break;
426 case aok_zoe_a1:
427 case oxp_fly:
428 case oxp_mini_amd_pro:
429 case oxp_g1_a:
430 reg = OXP_TURBO_SWITCH_REG;
431 mask = OXP_TURBO_TAKE_VAL;
432 break;
433 case oxp_2:
434 case oxp_x1:
435 case oxp_g1_i:
436 reg = OXP_2_TURBO_SWITCH_REG;
437 mask = OXP_TURBO_TAKE_VAL;
438 break;
439 default:
440 return -EINVAL;
441 }
442
443 retval = read_from_ec(reg, 1, &val);
444 if (retval)
445 return retval;
446
447 return sysfs_emit(buf, "%d\n", (val & mask) == mask);
448 }
449
450 static DEVICE_ATTR_RW(tt_toggle);
451
452 /* Callbacks for turbo LED attribute */
tt_led_is_visible(struct kobject * kobj,struct attribute * attr,int n)453 static umode_t tt_led_is_visible(struct kobject *kobj,
454 struct attribute *attr, int n)
455 {
456 switch (board) {
457 case oxp_x1:
458 return attr->mode;
459 default:
460 break;
461 }
462 return 0;
463 }
464
tt_led_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)465 static ssize_t tt_led_store(struct device *dev,
466 struct device_attribute *attr, const char *buf,
467 size_t count)
468 {
469 u8 reg, val;
470 bool value;
471 int ret;
472
473 ret = kstrtobool(buf, &value);
474 if (ret)
475 return ret;
476
477 switch (board) {
478 case oxp_x1:
479 reg = OXP_X1_TURBO_LED_REG;
480 val = value ? OXP_X1_TURBO_LED_ON : OXP_X1_TURBO_LED_OFF;
481 break;
482 default:
483 return -EINVAL;
484 }
485
486 ret = write_to_ec(reg, val);
487 if (ret)
488 return ret;
489
490 return count;
491 }
492
tt_led_show(struct device * dev,struct device_attribute * attr,char * buf)493 static ssize_t tt_led_show(struct device *dev,
494 struct device_attribute *attr, char *buf)
495 {
496 long enval;
497 long val;
498 int ret;
499 u8 reg;
500
501 switch (board) {
502 case oxp_x1:
503 reg = OXP_X1_TURBO_LED_REG;
504 enval = OXP_X1_TURBO_LED_ON;
505 break;
506 default:
507 return -EINVAL;
508 }
509
510 ret = read_from_ec(reg, 1, &val);
511 if (ret)
512 return ret;
513
514 return sysfs_emit(buf, "%d\n", val == enval);
515 }
516
517 static DEVICE_ATTR_RW(tt_led);
518
519 /* Callbacks for charge behaviour attributes */
oxp_psy_ext_supported(void)520 static bool oxp_psy_ext_supported(void)
521 {
522 switch (board) {
523 case oxp_x1:
524 case oxp_g1_i:
525 case oxp_g1_a:
526 case oxp_fly:
527 return true;
528 default:
529 break;
530 }
531 return false;
532 }
533
oxp_psy_ext_get_prop(struct power_supply * psy,const struct power_supply_ext * ext,void * data,enum power_supply_property psp,union power_supply_propval * val)534 static int oxp_psy_ext_get_prop(struct power_supply *psy,
535 const struct power_supply_ext *ext,
536 void *data,
537 enum power_supply_property psp,
538 union power_supply_propval *val)
539 {
540 long raw_val;
541 int ret;
542
543 switch (psp) {
544 case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
545 ret = read_from_ec(OXP_X1_CHARGE_LIMIT_REG, 1, &raw_val);
546 if (ret)
547 return ret;
548 if (raw_val < 0 || raw_val > 100)
549 return -EINVAL;
550 val->intval = raw_val;
551 return 0;
552 case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
553 ret = read_from_ec(OXP_X1_CHARGE_INHIBIT_REG, 1, &raw_val);
554 if (ret)
555 return ret;
556 if ((raw_val & OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS) ==
557 OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS)
558 val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE;
559 else if ((raw_val & OXP_X1_CHARGE_INHIBIT_MASK_AWAKE) ==
560 OXP_X1_CHARGE_INHIBIT_MASK_AWAKE)
561 val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE_AWAKE;
562 else
563 val->intval = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO;
564 return 0;
565 default:
566 return -EINVAL;
567 }
568 }
569
oxp_psy_ext_set_prop(struct power_supply * psy,const struct power_supply_ext * ext,void * data,enum power_supply_property psp,const union power_supply_propval * val)570 static int oxp_psy_ext_set_prop(struct power_supply *psy,
571 const struct power_supply_ext *ext,
572 void *data,
573 enum power_supply_property psp,
574 const union power_supply_propval *val)
575 {
576 long raw_val;
577
578 switch (psp) {
579 case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
580 if (val->intval < 0 || val->intval > 100)
581 return -EINVAL;
582 return write_to_ec(OXP_X1_CHARGE_LIMIT_REG, val->intval);
583 case POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR:
584 switch (val->intval) {
585 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO:
586 raw_val = 0;
587 break;
588 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE_AWAKE:
589 raw_val = OXP_X1_CHARGE_INHIBIT_MASK_AWAKE;
590 break;
591 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE:
592 raw_val = OXP_X1_CHARGE_INHIBIT_MASK_ALWAYS;
593 break;
594 default:
595 return -EINVAL;
596 }
597
598 return write_to_ec(OXP_X1_CHARGE_INHIBIT_REG, raw_val);
599 default:
600 return -EINVAL;
601 }
602 }
603
oxp_psy_prop_is_writeable(struct power_supply * psy,const struct power_supply_ext * ext,void * data,enum power_supply_property psp)604 static int oxp_psy_prop_is_writeable(struct power_supply *psy,
605 const struct power_supply_ext *ext,
606 void *data,
607 enum power_supply_property psp)
608 {
609 return true;
610 }
611
612 static const enum power_supply_property oxp_psy_ext_props[] = {
613 POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR,
614 POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD,
615 };
616
617 static const struct power_supply_ext oxp_psy_ext = {
618 .name = "oxp-charge-control",
619 .properties = oxp_psy_ext_props,
620 .num_properties = ARRAY_SIZE(oxp_psy_ext_props),
621 .charge_behaviours = EC_CHARGE_CONTROL_BEHAVIOURS,
622 .get_property = oxp_psy_ext_get_prop,
623 .set_property = oxp_psy_ext_set_prop,
624 .property_is_writeable = oxp_psy_prop_is_writeable,
625 };
626
oxp_add_battery(struct power_supply * battery,struct acpi_battery_hook * hook)627 static int oxp_add_battery(struct power_supply *battery, struct acpi_battery_hook *hook)
628 {
629 return power_supply_register_extension(battery, &oxp_psy_ext, oxp_dev, NULL);
630 }
631
oxp_remove_battery(struct power_supply * battery,struct acpi_battery_hook * hook)632 static int oxp_remove_battery(struct power_supply *battery, struct acpi_battery_hook *hook)
633 {
634 power_supply_unregister_extension(battery, &oxp_psy_ext);
635 return 0;
636 }
637
638 static struct acpi_battery_hook battery_hook = {
639 .add_battery = oxp_add_battery,
640 .remove_battery = oxp_remove_battery,
641 .name = "OneXPlayer Battery",
642 };
643
644 /* PWM enable/disable functions */
oxp_pwm_enable(void)645 static int oxp_pwm_enable(void)
646 {
647 switch (board) {
648 case orange_pi_neo:
649 return write_to_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, PWM_MODE_MANUAL);
650 case aok_zoe_a1:
651 case oxp_2:
652 case oxp_fly:
653 case oxp_mini_amd:
654 case oxp_mini_amd_a07:
655 case oxp_mini_amd_pro:
656 case oxp_x1:
657 case oxp_g1_i:
658 case oxp_g1_a:
659 return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, PWM_MODE_MANUAL);
660 default:
661 return -EINVAL;
662 }
663 }
664
oxp_pwm_disable(void)665 static int oxp_pwm_disable(void)
666 {
667 switch (board) {
668 case orange_pi_neo:
669 return write_to_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, PWM_MODE_AUTO);
670 case aok_zoe_a1:
671 case oxp_2:
672 case oxp_fly:
673 case oxp_mini_amd:
674 case oxp_mini_amd_a07:
675 case oxp_mini_amd_pro:
676 case oxp_x1:
677 case oxp_g1_i:
678 case oxp_g1_a:
679 return write_to_ec(OXP_SENSOR_PWM_ENABLE_REG, PWM_MODE_AUTO);
680 default:
681 return -EINVAL;
682 }
683 }
684
oxp_pwm_read(long * val)685 static int oxp_pwm_read(long *val)
686 {
687 switch (board) {
688 case orange_pi_neo:
689 return read_from_ec(ORANGEPI_SENSOR_PWM_ENABLE_REG, 1, val);
690 case aok_zoe_a1:
691 case oxp_2:
692 case oxp_fly:
693 case oxp_mini_amd:
694 case oxp_mini_amd_a07:
695 case oxp_mini_amd_pro:
696 case oxp_x1:
697 case oxp_g1_i:
698 case oxp_g1_a:
699 return read_from_ec(OXP_SENSOR_PWM_ENABLE_REG, 1, val);
700 default:
701 return -EOPNOTSUPP;
702 }
703 }
704
705 /* Callbacks for hwmon interface */
oxp_ec_hwmon_is_visible(const void * drvdata,enum hwmon_sensor_types type,u32 attr,int channel)706 static umode_t oxp_ec_hwmon_is_visible(const void *drvdata,
707 enum hwmon_sensor_types type, u32 attr, int channel)
708 {
709 switch (type) {
710 case hwmon_fan:
711 return 0444;
712 case hwmon_pwm:
713 return 0644;
714 default:
715 return 0;
716 }
717 }
718
719 /* Fan speed read function */
oxp_pwm_fan_speed(long * val)720 static int oxp_pwm_fan_speed(long *val)
721 {
722 switch (board) {
723 case orange_pi_neo:
724 return read_from_ec(ORANGEPI_SENSOR_FAN_REG, 2, val);
725 case oxp_2:
726 case oxp_x1:
727 case oxp_g1_i:
728 return read_from_ec(OXP_2_SENSOR_FAN_REG, 2, val);
729 case aok_zoe_a1:
730 case oxp_fly:
731 case oxp_mini_amd:
732 case oxp_mini_amd_a07:
733 case oxp_mini_amd_pro:
734 case oxp_g1_a:
735 return read_from_ec(OXP_SENSOR_FAN_REG, 2, val);
736 default:
737 return -EOPNOTSUPP;
738 }
739 }
740
741 /* PWM input read/write functions */
oxp_pwm_input_write(long val)742 static int oxp_pwm_input_write(long val)
743 {
744 if (val < 0 || val > 255)
745 return -EINVAL;
746
747 switch (board) {
748 case orange_pi_neo:
749 /* scale to range [1-244] */
750 val = ((val - 1) * 243 / 254) + 1;
751 return write_to_ec(ORANGEPI_SENSOR_PWM_REG, val);
752 case oxp_2:
753 case oxp_x1:
754 case oxp_g1_i:
755 /* scale to range [0-184] */
756 val = (val * 184) / 255;
757 return write_to_ec(OXP_SENSOR_PWM_REG, val);
758 case oxp_mini_amd:
759 case oxp_mini_amd_a07:
760 /* scale to range [0-100] */
761 val = (val * 100) / 255;
762 return write_to_ec(OXP_SENSOR_PWM_REG, val);
763 case aok_zoe_a1:
764 case oxp_fly:
765 case oxp_mini_amd_pro:
766 case oxp_g1_a:
767 return write_to_ec(OXP_SENSOR_PWM_REG, val);
768 default:
769 return -EOPNOTSUPP;
770 }
771 }
772
oxp_pwm_input_read(long * val)773 static int oxp_pwm_input_read(long *val)
774 {
775 int ret;
776
777 switch (board) {
778 case orange_pi_neo:
779 ret = read_from_ec(ORANGEPI_SENSOR_PWM_REG, 1, val);
780 if (ret)
781 return ret;
782 /* scale from range [1-244] */
783 *val = ((*val - 1) * 254 / 243) + 1;
784 break;
785 case oxp_2:
786 case oxp_x1:
787 case oxp_g1_i:
788 ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val);
789 if (ret)
790 return ret;
791 /* scale from range [0-184] */
792 *val = (*val * 255) / 184;
793 break;
794 case oxp_mini_amd:
795 case oxp_mini_amd_a07:
796 ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val);
797 if (ret)
798 return ret;
799 /* scale from range [0-100] */
800 *val = (*val * 255) / 100;
801 break;
802 case aok_zoe_a1:
803 case oxp_fly:
804 case oxp_mini_amd_pro:
805 case oxp_g1_a:
806 default:
807 ret = read_from_ec(OXP_SENSOR_PWM_REG, 1, val);
808 if (ret)
809 return ret;
810 break;
811 }
812 return 0;
813 }
814
oxp_platform_read(struct device * dev,enum hwmon_sensor_types type,u32 attr,int channel,long * val)815 static int oxp_platform_read(struct device *dev, enum hwmon_sensor_types type,
816 u32 attr, int channel, long *val)
817 {
818 int ret;
819
820 switch (type) {
821 case hwmon_fan:
822 switch (attr) {
823 case hwmon_fan_input:
824 return oxp_pwm_fan_speed(val);
825 default:
826 break;
827 }
828 break;
829 case hwmon_pwm:
830 switch (attr) {
831 case hwmon_pwm_input:
832 return oxp_pwm_input_read(val);
833 case hwmon_pwm_enable:
834 ret = oxp_pwm_read(val);
835 if (ret)
836 return ret;
837
838 /* Check for auto and return 2 */
839 if (!*val) {
840 *val = 2;
841 return 0;
842 }
843
844 /* Return 0 if at full fan speed, 1 otherwise */
845 ret = oxp_pwm_fan_speed(val);
846 if (ret)
847 return ret;
848
849 if (*val == 255)
850 *val = 0;
851 else
852 *val = 1;
853
854 return 0;
855 default:
856 break;
857 }
858 break;
859 default:
860 break;
861 }
862 return -EOPNOTSUPP;
863 }
864
oxp_platform_write(struct device * dev,enum hwmon_sensor_types type,u32 attr,int channel,long val)865 static int oxp_platform_write(struct device *dev, enum hwmon_sensor_types type,
866 u32 attr, int channel, long val)
867 {
868 int ret;
869
870 switch (type) {
871 case hwmon_pwm:
872 switch (attr) {
873 case hwmon_pwm_enable:
874 if (val == 1)
875 return oxp_pwm_enable();
876 else if (val == 2)
877 return oxp_pwm_disable();
878 else if (val != 0)
879 return -EINVAL;
880
881 /* Enable PWM and set to max speed */
882 ret = oxp_pwm_enable();
883 if (ret)
884 return ret;
885 return oxp_pwm_input_write(255);
886 case hwmon_pwm_input:
887 return oxp_pwm_input_write(val);
888 default:
889 break;
890 }
891 break;
892 default:
893 break;
894 }
895 return -EOPNOTSUPP;
896 }
897
898 /* Known sensors in the OXP EC controllers */
899 static const struct hwmon_channel_info * const oxp_platform_sensors[] = {
900 HWMON_CHANNEL_INFO(fan,
901 HWMON_F_INPUT),
902 HWMON_CHANNEL_INFO(pwm,
903 HWMON_PWM_INPUT | HWMON_PWM_ENABLE),
904 NULL,
905 };
906
907 static struct attribute *oxp_tt_toggle_attrs[] = {
908 &dev_attr_tt_toggle.attr,
909 NULL
910 };
911
912 static const struct attribute_group oxp_tt_toggle_attribute_group = {
913 .is_visible = tt_toggle_is_visible,
914 .attrs = oxp_tt_toggle_attrs,
915 };
916
917 static struct attribute *oxp_tt_led_attrs[] = {
918 &dev_attr_tt_led.attr,
919 NULL
920 };
921
922 static const struct attribute_group oxp_tt_led_attribute_group = {
923 .is_visible = tt_led_is_visible,
924 .attrs = oxp_tt_led_attrs,
925 };
926
927 static const struct attribute_group *oxp_ec_groups[] = {
928 &oxp_tt_toggle_attribute_group,
929 &oxp_tt_led_attribute_group,
930 NULL
931 };
932
933 static const struct hwmon_ops oxp_ec_hwmon_ops = {
934 .is_visible = oxp_ec_hwmon_is_visible,
935 .read = oxp_platform_read,
936 .write = oxp_platform_write,
937 };
938
939 static const struct hwmon_chip_info oxp_ec_chip_info = {
940 .ops = &oxp_ec_hwmon_ops,
941 .info = oxp_platform_sensors,
942 };
943
944 /* Initialization logic */
oxp_platform_probe(struct platform_device * pdev)945 static int oxp_platform_probe(struct platform_device *pdev)
946 {
947 struct device *dev = &pdev->dev;
948 struct device *hwdev;
949 int ret;
950
951 oxp_dev = dev;
952 hwdev = devm_hwmon_device_register_with_info(dev, "oxp_ec", NULL,
953 &oxp_ec_chip_info, NULL);
954
955 if (IS_ERR(hwdev))
956 return PTR_ERR(hwdev);
957
958 if (oxp_psy_ext_supported()) {
959 ret = devm_battery_hook_register(dev, &battery_hook);
960 if (ret)
961 return ret;
962 }
963
964 return 0;
965 }
966
967 static struct platform_driver oxp_platform_driver = {
968 .driver = {
969 .name = "oxp-platform",
970 .dev_groups = oxp_ec_groups,
971 },
972 .probe = oxp_platform_probe,
973 };
974
975 static struct platform_device *oxp_platform_device;
976
oxp_platform_init(void)977 static int __init oxp_platform_init(void)
978 {
979 const struct dmi_system_id *dmi_entry;
980
981 dmi_entry = dmi_first_match(dmi_table);
982 if (!dmi_entry)
983 return -ENODEV;
984
985 board = (enum oxp_board)(unsigned long)dmi_entry->driver_data;
986
987 /*
988 * Have to check for AMD processor here because DMI strings are the same
989 * between Intel and AMD boards on older OneXPlayer devices, the only way
990 * to tell them apart is the CPU. Old Intel boards have an unsupported EC.
991 */
992 if (board == oxp_mini_amd && boot_cpu_data.x86_vendor != X86_VENDOR_AMD)
993 return -ENODEV;
994
995 oxp_platform_device =
996 platform_create_bundle(&oxp_platform_driver,
997 oxp_platform_probe, NULL, 0, NULL, 0);
998
999 return PTR_ERR_OR_ZERO(oxp_platform_device);
1000 }
1001
oxp_platform_exit(void)1002 static void __exit oxp_platform_exit(void)
1003 {
1004 platform_device_unregister(oxp_platform_device);
1005 platform_driver_unregister(&oxp_platform_driver);
1006 }
1007
1008 MODULE_DEVICE_TABLE(dmi, dmi_table);
1009
1010 module_init(oxp_platform_init);
1011 module_exit(oxp_platform_exit);
1012
1013 MODULE_AUTHOR("Joaquín Ignacio Aramendía <samsagax@gmail.com>");
1014 MODULE_DESCRIPTION("Platform driver that handles EC sensors of OneXPlayer devices");
1015 MODULE_LICENSE("GPL");
1016