tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * DMI based code to deal with broken DSDTs on X86 tablets which ship with
4 * Android as (part of) the factory image. The factory kernels shipped on these
5 * devices typically have a bunch of things hardcoded, rather than specified
6 * in their DSDT.
7 *
8 * Copyright (C) 2021-2023 Hans de Goede <hansg@kernel.org>
9 */
10
11#include <linux/acpi.h>
12#include <linux/gpio/machine.h>
13#include <linux/gpio/property.h>
14#include <linux/input-event-codes.h>
15#include <linux/leds.h>
16#include <linux/pci.h>
17#include <linux/platform_device.h>
18#include <linux/pwm.h>
19
20#include <dt-bindings/leds/common.h>
21
22#include "shared-psy-info.h"
23#include "x86-android-tablets.h"
24
25/*
26 * Advantech MICA-071
27 * This is a standard Windows tablet, but it has an extra "quick launch" button
28 * which is not described in the ACPI tables in anyway.
29 * Use the x86-android-tablets infra to create a gpio-keys device for this.
30 */
31static const struct software_node advantech_mica_071_gpio_keys_node = {
32 .name = "prog1_key",
33};
34
35static const struct property_entry advantech_mica_071_prog1_key_props[] = {
36 PROPERTY_ENTRY_U32("linux,code", KEY_PROG1),
37 PROPERTY_ENTRY_STRING("label", "prog1_key"),
38 PROPERTY_ENTRY_GPIO("gpios", &baytrail_gpiochip_nodes[0], 2, GPIO_ACTIVE_LOW),
39 PROPERTY_ENTRY_U32("debounce-interval", 50),
40 { }
41};
42
43static const struct software_node advantech_mica_071_prog1_key_node = {
44 .parent = &advantech_mica_071_gpio_keys_node,
45 .properties = advantech_mica_071_prog1_key_props,
46};
47
48static const struct software_node *advantech_mica_071_button_swnodes[] = {
49 &advantech_mica_071_gpio_keys_node,
50 &advantech_mica_071_prog1_key_node,
51 NULL
52};
53
54const struct x86_dev_info advantech_mica_071_info __initconst = {
55 .gpio_button_swnodes = advantech_mica_071_button_swnodes,
56 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
57};
58
59/*
60 * When booted with the BIOS set to Android mode the Chuwi Hi8 (CWI509) DSDT
61 * contains a whole bunch of bogus ACPI I2C devices and is missing entries
62 * for the touchscreen and the accelerometer.
63 */
64static const struct property_entry chuwi_hi8_gsl1680_props[] = {
65 PROPERTY_ENTRY_U32("touchscreen-size-x", 1665),
66 PROPERTY_ENTRY_U32("touchscreen-size-y", 1140),
67 PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
68 PROPERTY_ENTRY_BOOL("silead,home-button"),
69 PROPERTY_ENTRY_STRING("firmware-name", "gsl1680-chuwi-hi8.fw"),
70 { }
71};
72
73static const struct software_node chuwi_hi8_gsl1680_node = {
74 .properties = chuwi_hi8_gsl1680_props,
75};
76
77static const char * const chuwi_hi8_mount_matrix[] = {
78 "1", "0", "0",
79 "0", "-1", "0",
80 "0", "0", "1"
81};
82
83static const struct property_entry chuwi_hi8_bma250e_props[] = {
84 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", chuwi_hi8_mount_matrix),
85 { }
86};
87
88static const struct software_node chuwi_hi8_bma250e_node = {
89 .properties = chuwi_hi8_bma250e_props,
90};
91
92static const struct x86_i2c_client_info chuwi_hi8_i2c_clients[] __initconst = {
93 {
94 /* Silead touchscreen */
95 .board_info = {
96 .type = "gsl1680",
97 .addr = 0x40,
98 .swnode = &chuwi_hi8_gsl1680_node,
99 },
100 .adapter_path = "\\_SB_.I2C4",
101 .irq_data = {
102 .type = X86_ACPI_IRQ_TYPE_APIC,
103 .index = 0x44,
104 .trigger = ACPI_EDGE_SENSITIVE,
105 .polarity = ACPI_ACTIVE_HIGH,
106 },
107 }, {
108 /* BMA250E accelerometer */
109 .board_info = {
110 .type = "bma250e",
111 .addr = 0x18,
112 .swnode = &chuwi_hi8_bma250e_node,
113 },
114 .adapter_path = "\\_SB_.I2C3",
115 .irq_data = {
116 .type = X86_ACPI_IRQ_TYPE_GPIOINT,
117 .chip = "INT33FC:02",
118 .index = 23,
119 .trigger = ACPI_LEVEL_SENSITIVE,
120 .polarity = ACPI_ACTIVE_HIGH,
121 .con_id = "bma250e_irq",
122 },
123 },
124};
125
126static int __init chuwi_hi8_init(struct device *dev)
127{
128 /*
129 * Avoid the acpi_unregister_gsi() call in x86_acpi_irq_helper_get()
130 * breaking the touchscreen + logging various errors when the Windows
131 * BIOS is used.
132 */
133 if (acpi_dev_present("MSSL0001", NULL, 1))
134 return -ENODEV;
135
136 return 0;
137}
138
139const struct x86_dev_info chuwi_hi8_info __initconst = {
140 .i2c_client_info = chuwi_hi8_i2c_clients,
141 .i2c_client_count = ARRAY_SIZE(chuwi_hi8_i2c_clients),
142 .init = chuwi_hi8_init,
143};
144
145/*
146 * Cyberbook T116 Android version
147 * This comes in both Windows and Android versions and even on Android
148 * the DSDT is mostly sane. This tablet has 2 extra general purpose buttons
149 * in the button row with the power + volume-buttons labeled P and F.
150 * Use the x86-android-tablets infra to create a gpio-keys device for these.
151 */
152static const struct software_node cyberbook_t116_gpio_keys_node = {
153 .name = "prog_keys",
154};
155
156static const struct property_entry cyberbook_t116_prog1_key_props[] = {
157 PROPERTY_ENTRY_U32("linux,code", KEY_PROG1),
158 PROPERTY_ENTRY_STRING("label", "prog1_key"),
159 PROPERTY_ENTRY_GPIO("gpios", &cherryview_gpiochip_nodes[0], 30, GPIO_ACTIVE_LOW),
160 PROPERTY_ENTRY_U32("debounce-interval", 50),
161 { }
162};
163
164static const struct software_node cyberbook_t116_prog1_key_node = {
165 .parent = &cyberbook_t116_gpio_keys_node,
166 .properties = cyberbook_t116_prog1_key_props,
167};
168
169static const struct property_entry cyberbook_t116_prog2_key_props[] = {
170 PROPERTY_ENTRY_U32("linux,code", KEY_PROG2),
171 PROPERTY_ENTRY_STRING("label", "prog2_key"),
172 PROPERTY_ENTRY_GPIO("gpios", &cherryview_gpiochip_nodes[3], 48, GPIO_ACTIVE_LOW),
173 PROPERTY_ENTRY_U32("debounce-interval", 50),
174 { }
175};
176
177static const struct software_node cyberbook_t116_prog2_key_node = {
178 .parent = &cyberbook_t116_gpio_keys_node,
179 .properties = cyberbook_t116_prog2_key_props,
180};
181
182static const struct software_node *cyberbook_t116_buttons_swnodes[] = {
183 &cyberbook_t116_gpio_keys_node,
184 &cyberbook_t116_prog1_key_node,
185 &cyberbook_t116_prog2_key_node,
186 NULL
187};
188
189const struct x86_dev_info cyberbook_t116_info __initconst = {
190 .gpio_button_swnodes = cyberbook_t116_buttons_swnodes,
191 .gpiochip_type = X86_GPIOCHIP_CHERRYVIEW,
192};
193
194#define CZC_EC_EXTRA_PORT 0x68
195#define CZC_EC_ANDROID_KEYS 0x63
196
197static int __init czc_p10t_init(struct device *dev)
198{
199 /*
200 * The device boots up in "Windows 7" mode, when the home button sends a
201 * Windows specific key sequence (Left Meta + D) and the second button
202 * sends an unknown one while also toggling the Radio Kill Switch.
203 * This is a surprising behavior when the second button is labeled "Back".
204 *
205 * The vendor-supplied Android-x86 build switches the device to a "Android"
206 * mode by writing value 0x63 to the I/O port 0x68. This just seems to just
207 * set bit 6 on address 0x96 in the EC region; switching the bit directly
208 * seems to achieve the same result. It uses a "p10t_switcher" to do the
209 * job. It doesn't seem to be able to do anything else, and no other use
210 * of the port 0x68 is known.
211 *
212 * In the Android mode, the home button sends just a single scancode,
213 * which can be handled in Linux userspace more reasonably and the back
214 * button only sends a scancode without toggling the kill switch.
215 * The scancode can then be mapped either to Back or RF Kill functionality
216 * in userspace, depending on how the button is labeled on that particular
217 * model.
218 */
219 outb(CZC_EC_ANDROID_KEYS, CZC_EC_EXTRA_PORT);
220 return 0;
221}
222
223const struct x86_dev_info czc_p10t __initconst = {
224 .init = czc_p10t_init,
225};
226
227/* Medion Lifetab S10346 tablets have an Android factory image with everything hardcoded */
228static const char * const medion_lifetab_s10346_accel_mount_matrix[] = {
229 "0", "1", "0",
230 "1", "0", "0",
231 "0", "0", "1"
232};
233
234static const struct property_entry medion_lifetab_s10346_accel_props[] = {
235 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", medion_lifetab_s10346_accel_mount_matrix),
236 { }
237};
238
239static const struct software_node medion_lifetab_s10346_accel_node = {
240 .properties = medion_lifetab_s10346_accel_props,
241};
242
243/* Note the LCD panel is mounted upside down, this is correctly indicated in the VBT */
244static const struct property_entry medion_lifetab_s10346_touchscreen_props[] = {
245 PROPERTY_ENTRY_BOOL("touchscreen-inverted-x"),
246 PROPERTY_ENTRY_BOOL("touchscreen-swapped-x-y"),
247 PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_HIGH),
248 PROPERTY_ENTRY_GPIO("irq-gpios", &baytrail_gpiochip_nodes[2], 3, GPIO_ACTIVE_HIGH),
249 { }
250};
251
252static const struct software_node medion_lifetab_s10346_touchscreen_node = {
253 .properties = medion_lifetab_s10346_touchscreen_props,
254};
255
256static const struct x86_i2c_client_info medion_lifetab_s10346_i2c_clients[] __initconst = {
257 {
258 /* kxtj21009 accelerometer */
259 .board_info = {
260 .type = "kxtj21009",
261 .addr = 0x0f,
262 .dev_name = "kxtj21009",
263 .swnode = &medion_lifetab_s10346_accel_node,
264 },
265 .adapter_path = "\\_SB_.I2C3",
266 .irq_data = {
267 .type = X86_ACPI_IRQ_TYPE_GPIOINT,
268 .chip = "INT33FC:02",
269 .index = 23,
270 .trigger = ACPI_EDGE_SENSITIVE,
271 .polarity = ACPI_ACTIVE_HIGH,
272 .con_id = "kxtj21009_irq",
273 },
274 }, {
275 /* goodix touchscreen */
276 .board_info = {
277 .type = "GDIX1001:00",
278 .addr = 0x14,
279 .dev_name = "goodix_ts",
280 .swnode = &medion_lifetab_s10346_touchscreen_node,
281 },
282 .adapter_path = "\\_SB_.I2C4",
283 .irq_data = {
284 .type = X86_ACPI_IRQ_TYPE_APIC,
285 .index = 0x44,
286 .trigger = ACPI_EDGE_SENSITIVE,
287 .polarity = ACPI_ACTIVE_LOW,
288 },
289 },
290};
291
292const struct x86_dev_info medion_lifetab_s10346_info __initconst = {
293 .i2c_client_info = medion_lifetab_s10346_i2c_clients,
294 .i2c_client_count = ARRAY_SIZE(medion_lifetab_s10346_i2c_clients),
295 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
296};
297
298/* Nextbook Ares 8 (BYT) tablets have an Android factory image with everything hardcoded */
299static const char * const nextbook_ares8_accel_mount_matrix[] = {
300 "0", "-1", "0",
301 "-1", "0", "0",
302 "0", "0", "1"
303};
304
305static const struct property_entry nextbook_ares8_accel_props[] = {
306 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", nextbook_ares8_accel_mount_matrix),
307 { }
308};
309
310static const struct software_node nextbook_ares8_accel_node = {
311 .properties = nextbook_ares8_accel_props,
312};
313
314static const struct property_entry nextbook_ares8_touchscreen_props[] = {
315 PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
316 PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
317 { }
318};
319
320static const struct software_node nextbook_ares8_touchscreen_node = {
321 .properties = nextbook_ares8_touchscreen_props,
322};
323
324static const struct x86_i2c_client_info nextbook_ares8_i2c_clients[] __initconst = {
325 {
326 /* Freescale MMA8653FC accelerometer */
327 .board_info = {
328 .type = "mma8653",
329 .addr = 0x1d,
330 .dev_name = "mma8653",
331 .swnode = &nextbook_ares8_accel_node,
332 },
333 .adapter_path = "\\_SB_.I2C3",
334 }, {
335 /* FT5416DQ9 touchscreen controller */
336 .board_info = {
337 .type = "edt-ft5x06",
338 .addr = 0x38,
339 .dev_name = "ft5416",
340 .swnode = &nextbook_ares8_touchscreen_node,
341 },
342 .adapter_path = "\\_SB_.I2C4",
343 .irq_data = {
344 .type = X86_ACPI_IRQ_TYPE_GPIOINT,
345 .chip = "INT33FC:02",
346 .index = 3,
347 .trigger = ACPI_EDGE_SENSITIVE,
348 .polarity = ACPI_ACTIVE_LOW,
349 .con_id = "ft5416_irq",
350 },
351 },
352};
353
354const struct x86_dev_info nextbook_ares8_info __initconst = {
355 .i2c_client_info = nextbook_ares8_i2c_clients,
356 .i2c_client_count = ARRAY_SIZE(nextbook_ares8_i2c_clients),
357 .pdev_info = int3496_pdevs,
358 .pdev_count = 1,
359 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
360};
361
362/* Nextbook Ares 8A (CHT) tablets have an Android factory image with everything hardcoded */
363static const char * const nextbook_ares8a_accel_mount_matrix[] = {
364 "1", "0", "0",
365 "0", "-1", "0",
366 "0", "0", "1"
367};
368
369static const struct property_entry nextbook_ares8a_accel_props[] = {
370 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", nextbook_ares8a_accel_mount_matrix),
371 { }
372};
373
374static const struct software_node nextbook_ares8a_accel_node = {
375 .properties = nextbook_ares8a_accel_props,
376};
377
378static const struct property_entry nextbook_ares8a_ft5416_props[] = {
379 PROPERTY_ENTRY_U32("touchscreen-size-x", 800),
380 PROPERTY_ENTRY_U32("touchscreen-size-y", 1280),
381 PROPERTY_ENTRY_GPIO("reset-gpios", &cherryview_gpiochip_nodes[1], 25, GPIO_ACTIVE_LOW),
382 { }
383};
384
385static const struct software_node nextbook_ares8a_ft5416_node = {
386 .properties = nextbook_ares8a_ft5416_props,
387};
388
389static const struct x86_i2c_client_info nextbook_ares8a_i2c_clients[] __initconst = {
390 {
391 /* Freescale MMA8653FC accelerometer */
392 .board_info = {
393 .type = "mma8653",
394 .addr = 0x1d,
395 .dev_name = "mma8653",
396 .swnode = &nextbook_ares8a_accel_node,
397 },
398 .adapter_path = "\\_SB_.PCI0.I2C3",
399 }, {
400 /* FT5416DQ9 touchscreen controller */
401 .board_info = {
402 .type = "edt-ft5x06",
403 .addr = 0x38,
404 .dev_name = "ft5416",
405 .swnode = &nextbook_ares8a_ft5416_node,
406 },
407 .adapter_path = "\\_SB_.PCI0.I2C6",
408 .irq_data = {
409 .type = X86_ACPI_IRQ_TYPE_GPIOINT,
410 .chip = "INT33FF:01",
411 .index = 17,
412 .trigger = ACPI_EDGE_SENSITIVE,
413 .polarity = ACPI_ACTIVE_LOW,
414 .con_id = "ft5416_irq",
415 },
416 },
417};
418
419const struct x86_dev_info nextbook_ares8a_info __initconst = {
420 .i2c_client_info = nextbook_ares8a_i2c_clients,
421 .i2c_client_count = ARRAY_SIZE(nextbook_ares8a_i2c_clients),
422 .gpiochip_type = X86_GPIOCHIP_CHERRYVIEW,
423};
424
425/*
426 * Peaq C1010
427 * This is a standard Windows tablet, but it has a special Dolby button.
428 * This button has a WMI interface, but that is broken. Instead of trying to
429 * use the broken WMI interface, instantiate a gpio-keys device for this.
430 */
431static const struct software_node peaq_c1010_gpio_keys_node = {
432 .name = "gpio_keys",
433};
434
435static const struct property_entry peaq_c1010_dolby_key_props[] = {
436 PROPERTY_ENTRY_U32("linux,code", KEY_SOUND),
437 PROPERTY_ENTRY_STRING("label", "dolby_key"),
438 PROPERTY_ENTRY_GPIO("gpios", &baytrail_gpiochip_nodes[0], 3, GPIO_ACTIVE_LOW),
439 PROPERTY_ENTRY_U32("debounce-interval", 50),
440 { }
441};
442
443static const struct software_node peaq_c1010_dolby_key_node = {
444 .parent = &peaq_c1010_gpio_keys_node,
445 .properties = peaq_c1010_dolby_key_props,
446};
447
448static const struct software_node *peaq_c1010_button_swnodes[] = {
449 &peaq_c1010_gpio_keys_node,
450 &peaq_c1010_dolby_key_node,
451 NULL
452};
453
454const struct x86_dev_info peaq_c1010_info __initconst = {
455 .gpio_button_swnodes = peaq_c1010_button_swnodes,
456 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
457};
458
459/*
460 * Whitelabel (sold as various brands) TM800A550L tablets.
461 * These tablet's DSDT contains a whole bunch of bogus ACPI I2C devices
462 * (removed through acpi_quirk_skip_i2c_client_enumeration()) and
463 * the touchscreen firmware node has the wrong GPIOs.
464 */
465static const char * const whitelabel_tm800a550l_accel_mount_matrix[] = {
466 "-1", "0", "0",
467 "0", "1", "0",
468 "0", "0", "1"
469};
470
471static const struct property_entry whitelabel_tm800a550l_accel_props[] = {
472 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", whitelabel_tm800a550l_accel_mount_matrix),
473 { }
474};
475
476static const struct software_node whitelabel_tm800a550l_accel_node = {
477 .properties = whitelabel_tm800a550l_accel_props,
478};
479
480static const struct property_entry whitelabel_tm800a550l_goodix_props[] = {
481 PROPERTY_ENTRY_STRING("firmware-name", "gt912-tm800a550l.fw"),
482 PROPERTY_ENTRY_STRING("goodix,config-name", "gt912-tm800a550l.cfg"),
483 PROPERTY_ENTRY_U32("goodix,main-clk", 54),
484 PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_HIGH),
485 PROPERTY_ENTRY_GPIO("irq-gpios", &baytrail_gpiochip_nodes[2], 3, GPIO_ACTIVE_HIGH),
486 { }
487};
488
489static const struct software_node whitelabel_tm800a550l_goodix_node = {
490 .properties = whitelabel_tm800a550l_goodix_props,
491};
492
493static const struct x86_i2c_client_info whitelabel_tm800a550l_i2c_clients[] __initconst = {
494 {
495 /* goodix touchscreen */
496 .board_info = {
497 .type = "GDIX1001:00",
498 .addr = 0x14,
499 .dev_name = "goodix_ts",
500 .swnode = &whitelabel_tm800a550l_goodix_node,
501 },
502 .adapter_path = "\\_SB_.I2C2",
503 .irq_data = {
504 .type = X86_ACPI_IRQ_TYPE_APIC,
505 .index = 0x44,
506 .trigger = ACPI_EDGE_SENSITIVE,
507 .polarity = ACPI_ACTIVE_HIGH,
508 },
509 }, {
510 /* kxcj91008 accelerometer */
511 .board_info = {
512 .type = "kxcj91008",
513 .addr = 0x0f,
514 .dev_name = "kxcj91008",
515 .swnode = &whitelabel_tm800a550l_accel_node,
516 },
517 .adapter_path = "\\_SB_.I2C3",
518 },
519};
520
521const struct x86_dev_info whitelabel_tm800a550l_info __initconst = {
522 .i2c_client_info = whitelabel_tm800a550l_i2c_clients,
523 .i2c_client_count = ARRAY_SIZE(whitelabel_tm800a550l_i2c_clients),
524 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
525};
526
527/*
528 * Vexia EDU ATLA 10 tablet 5V, Android 4.4 + Guadalinex Ubuntu tablet
529 * distributed to schools in the Spanish Andalucía region.
530 */
531static const struct property_entry vexia_edu_atla10_5v_touchscreen_props[] = {
532 PROPERTY_ENTRY_U32("hid-descr-addr", 0x0000),
533 PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 120),
534 PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[1], 26, GPIO_ACTIVE_LOW),
535 { }
536};
537
538static const struct software_node vexia_edu_atla10_5v_touchscreen_node = {
539 .properties = vexia_edu_atla10_5v_touchscreen_props,
540};
541
542static const struct x86_i2c_client_info vexia_edu_atla10_5v_i2c_clients[] __initconst = {
543 {
544 /* kxcjk1013 accelerometer */
545 .board_info = {
546 .type = "kxcjk1013",
547 .addr = 0x0f,
548 .dev_name = "kxcjk1013",
549 },
550 .adapter_path = "\\_SB_.I2C3",
551 }, {
552 /* touchscreen controller */
553 .board_info = {
554 .type = "hid-over-i2c",
555 .addr = 0x38,
556 .dev_name = "FTSC1000",
557 .swnode = &vexia_edu_atla10_5v_touchscreen_node,
558 },
559 .adapter_path = "\\_SB_.I2C4",
560 .irq_data = {
561 .type = X86_ACPI_IRQ_TYPE_APIC,
562 .index = 0x44,
563 .trigger = ACPI_LEVEL_SENSITIVE,
564 .polarity = ACPI_ACTIVE_HIGH,
565 },
566 }
567};
568
569const struct x86_dev_info vexia_edu_atla10_5v_info __initconst = {
570 .i2c_client_info = vexia_edu_atla10_5v_i2c_clients,
571 .i2c_client_count = ARRAY_SIZE(vexia_edu_atla10_5v_i2c_clients),
572 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
573};
574
575/*
576 * Vexia EDU ATLA 10 tablet 9V, Android 4.2 + Guadalinex Ubuntu tablet
577 * distributed to schools in the Spanish Andalucía region.
578 */
579static const char * const crystal_cove_pwrsrc_psy[] = { "crystal_cove_pwrsrc" };
580
581static const struct property_entry vexia_edu_atla10_9v_ulpmc_props[] = {
582 PROPERTY_ENTRY_STRING_ARRAY("supplied-from", crystal_cove_pwrsrc_psy),
583 { }
584};
585
586static const struct software_node vexia_edu_atla10_9v_ulpmc_node = {
587 .properties = vexia_edu_atla10_9v_ulpmc_props,
588};
589
590static const char * const vexia_edu_atla10_9v_accel_mount_matrix[] = {
591 "0", "-1", "0",
592 "1", "0", "0",
593 "0", "0", "1"
594};
595
596static const struct property_entry vexia_edu_atla10_9v_accel_props[] = {
597 PROPERTY_ENTRY_STRING_ARRAY("mount-matrix", vexia_edu_atla10_9v_accel_mount_matrix),
598 { }
599};
600
601static const struct software_node vexia_edu_atla10_9v_accel_node = {
602 .properties = vexia_edu_atla10_9v_accel_props,
603};
604
605static const struct property_entry vexia_edu_atla10_9v_touchscreen_props[] = {
606 PROPERTY_ENTRY_U32("hid-descr-addr", 0x0000),
607 PROPERTY_ENTRY_U32("post-reset-deassert-delay-ms", 120),
608 PROPERTY_ENTRY_GPIO("reset-gpios", &baytrail_gpiochip_nodes[0], 60, GPIO_ACTIVE_LOW),
609 { }
610};
611
612static const struct software_node vexia_edu_atla10_9v_touchscreen_node = {
613 .properties = vexia_edu_atla10_9v_touchscreen_props,
614};
615
616static const struct property_entry vexia_edu_atla10_9v_pmic_props[] = {
617 PROPERTY_ENTRY_BOOL("linux,register-pwrsrc-power_supply"),
618 { }
619};
620
621static const struct software_node vexia_edu_atla10_9v_pmic_node = {
622 .properties = vexia_edu_atla10_9v_pmic_props,
623};
624
625static const struct x86_i2c_client_info vexia_edu_atla10_9v_i2c_clients[] __initconst = {
626 {
627 /* I2C attached embedded controller, used to access fuel-gauge */
628 .board_info = {
629 .type = "vexia_atla10_ec",
630 .addr = 0x76,
631 .dev_name = "ulpmc",
632 .swnode = &vexia_edu_atla10_9v_ulpmc_node,
633 },
634 .adapter_path = "0000:00:18.1",
635 }, {
636 /* RT5642 audio codec */
637 .board_info = {
638 .type = "rt5640",
639 .addr = 0x1c,
640 .dev_name = "rt5640",
641 },
642 .adapter_path = "0000:00:18.2",
643 .irq_data = {
644 .type = X86_ACPI_IRQ_TYPE_GPIOINT,
645 .chip = "INT33FC:02",
646 .index = 4,
647 .trigger = ACPI_EDGE_SENSITIVE,
648 .polarity = ACPI_ACTIVE_HIGH,
649 .con_id = "rt5640_irq",
650 },
651 }, {
652 /* kxtj21009 accelerometer */
653 .board_info = {
654 .type = "kxtj21009",
655 .addr = 0x0f,
656 .dev_name = "kxtj21009",
657 .swnode = &vexia_edu_atla10_9v_accel_node,
658 },
659 .adapter_path = "0000:00:18.5",
660 }, {
661 /* FT5416DQ9 touchscreen controller */
662 .board_info = {
663 .type = "hid-over-i2c",
664 .addr = 0x38,
665 .dev_name = "FTSC1000",
666 .swnode = &vexia_edu_atla10_9v_touchscreen_node,
667 },
668 .adapter_path = "0000:00:18.6",
669 .irq_data = {
670 .type = X86_ACPI_IRQ_TYPE_APIC,
671 .index = 0x45,
672 .trigger = ACPI_LEVEL_SENSITIVE,
673 .polarity = ACPI_ACTIVE_HIGH,
674 },
675 }, {
676 /* Crystal Cove PMIC */
677 .board_info = {
678 .type = "intel_soc_pmic_crc",
679 .addr = 0x6e,
680 .dev_name = "intel_soc_pmic_crc",
681 .swnode = &vexia_edu_atla10_9v_pmic_node,
682 },
683 .adapter_path = "0000:00:18.7",
684 .irq_data = {
685 .type = X86_ACPI_IRQ_TYPE_APIC,
686 .index = 0x43,
687 .trigger = ACPI_LEVEL_SENSITIVE,
688 .polarity = ACPI_ACTIVE_HIGH,
689 },
690 }
691};
692
693static const struct x86_serdev_info vexia_edu_atla10_9v_serdevs[] __initconst = {
694 {
695 .ctrl.pci.devfn = PCI_DEVFN(0x1e, 3),
696 .ctrl_devname = "serial0",
697 .serdev_hid = "OBDA8723",
698 },
699};
700
701static int __init vexia_edu_atla10_9v_init(struct device *dev)
702{
703 struct pci_dev *pdev;
704 int ret;
705
706 /* Enable the Wifi module by setting the wifi_enable pin to 1 */
707 ret = x86_android_tablet_get_gpiod("INT33FC:02", 20, "wifi_enable",
708 false, GPIOD_OUT_HIGH, NULL);
709 if (ret)
710 return ret;
711
712 /* Reprobe the SDIO controller to enumerate the now enabled Wifi module */
713 pdev = pci_get_domain_bus_and_slot(0, 0, PCI_DEVFN(0x11, 0));
714 if (!pdev) {
715 pr_warn("Could not get PCI SDIO at devfn 0x%02x\n", PCI_DEVFN(0x11, 0));
716 return 0;
717 }
718
719 ret = device_reprobe(&pdev->dev);
720 if (ret)
721 pci_warn(pdev, "Reprobing error: %d\n", ret);
722
723 pci_dev_put(pdev);
724 return 0;
725}
726
727const struct x86_dev_info vexia_edu_atla10_9v_info __initconst = {
728 .i2c_client_info = vexia_edu_atla10_9v_i2c_clients,
729 .i2c_client_count = ARRAY_SIZE(vexia_edu_atla10_9v_i2c_clients),
730 .serdev_info = vexia_edu_atla10_9v_serdevs,
731 .serdev_count = ARRAY_SIZE(vexia_edu_atla10_9v_serdevs),
732 .init = vexia_edu_atla10_9v_init,
733 .use_pci = true,
734 .gpiochip_type = X86_GPIOCHIP_BAYTRAIL,
735};
736
737/*
738 * The firmware node for ktd2026 on Xaomi pad2. It composed of a RGB LED node
739 * with three subnodes for each color (B/G/R). The RGB LED node is named
740 * "multi-led" to align with the name in the device tree.
741 */
742
743/* Main firmware node for ktd2026 */
744static const struct software_node ktd2026_node = {
745 .name = "ktd2026",
746};
747
748static const struct property_entry ktd2026_rgb_led_props[] = {
749 PROPERTY_ENTRY_U32("reg", 0),
750 PROPERTY_ENTRY_U32("color", LED_COLOR_ID_RGB),
751 PROPERTY_ENTRY_STRING("label", "mipad2:rgb:indicator"),
752 PROPERTY_ENTRY_STRING("linux,default-trigger", "bq27520-0-charging-orange-full-green"),
753 { }
754};
755
756static const struct software_node ktd2026_rgb_led_node = {
757 .name = "multi-led",
758 .properties = ktd2026_rgb_led_props,
759 .parent = &ktd2026_node,
760};
761
762static const struct property_entry ktd2026_blue_led_props[] = {
763 PROPERTY_ENTRY_U32("reg", 0),
764 PROPERTY_ENTRY_U32("color", LED_COLOR_ID_BLUE),
765 { }
766};
767
768static const struct software_node ktd2026_blue_led_node = {
769 .properties = ktd2026_blue_led_props,
770 .parent = &ktd2026_rgb_led_node,
771};
772
773static const struct property_entry ktd2026_green_led_props[] = {
774 PROPERTY_ENTRY_U32("reg", 1),
775 PROPERTY_ENTRY_U32("color", LED_COLOR_ID_GREEN),
776 { }
777};
778
779static const struct software_node ktd2026_green_led_node = {
780 .properties = ktd2026_green_led_props,
781 .parent = &ktd2026_rgb_led_node,
782};
783
784static const struct property_entry ktd2026_red_led_props[] = {
785 PROPERTY_ENTRY_U32("reg", 2),
786 PROPERTY_ENTRY_U32("color", LED_COLOR_ID_RED),
787 { }
788};
789
790static const struct software_node ktd2026_red_led_node = {
791 .properties = ktd2026_red_led_props,
792 .parent = &ktd2026_rgb_led_node,
793};
794
795static const struct software_node *ktd2026_node_group[] = {
796 &ktd2026_node,
797 &ktd2026_rgb_led_node,
798 &ktd2026_red_led_node,
799 &ktd2026_green_led_node,
800 &ktd2026_blue_led_node,
801 NULL
802};
803
804/*
805 * For the LEDs which backlight the Menu / Home / Back capacitive buttons on
806 * the bottom bezel. These are attached to a TPS61158 LED controller which
807 * is controlled by the "pwm_soc_lpss_2" PWM output.
808 */
809#define XIAOMI_MIPAD2_LED_PERIOD_NS 19200
810#define XIAOMI_MIPAD2_LED_MAX_DUTY_NS 6000 /* From Android kernel */
811
812static struct pwm_device *xiaomi_mipad2_led_pwm;
813
814static int xiaomi_mipad2_brightness_set(struct led_classdev *led_cdev,
815 enum led_brightness val)
816{
817 struct pwm_state state = {
818 .period = XIAOMI_MIPAD2_LED_PERIOD_NS,
819 .duty_cycle = XIAOMI_MIPAD2_LED_MAX_DUTY_NS * val / LED_FULL,
820 /* Always set PWM enabled to avoid the pin floating */
821 .enabled = true,
822 };
823
824 return pwm_apply_might_sleep(xiaomi_mipad2_led_pwm, &state);
825}
826
827static int __init xiaomi_mipad2_init(struct device *dev)
828{
829 struct led_classdev *led_cdev;
830
831 xiaomi_mipad2_led_pwm = devm_pwm_get(dev, "pwm_soc_lpss_2");
832 if (IS_ERR(xiaomi_mipad2_led_pwm))
833 return dev_err_probe(dev, PTR_ERR(xiaomi_mipad2_led_pwm), "getting pwm\n");
834
835 led_cdev = devm_kzalloc(dev, sizeof(*led_cdev), GFP_KERNEL);
836 if (!led_cdev)
837 return -ENOMEM;
838
839 led_cdev->name = "mipad2:white:touch-buttons-backlight";
840 led_cdev->max_brightness = LED_FULL;
841 led_cdev->default_trigger = "input-events";
842 led_cdev->brightness_set_blocking = xiaomi_mipad2_brightness_set;
843 /* Turn LED off during suspend */
844 led_cdev->flags = LED_CORE_SUSPENDRESUME;
845
846 return devm_led_classdev_register(dev, led_cdev);
847}
848
849/*
850 * If the EFI bootloader is not Xiaomi's own signed Android loader, then the
851 * Xiaomi Mi Pad 2 X86 tablet sets OSID in the DSDT to 1 (Windows), causing
852 * a bunch of devices to be hidden.
853 *
854 * This takes care of instantiating the hidden devices manually.
855 */
856static const struct x86_i2c_client_info xiaomi_mipad2_i2c_clients[] __initconst = {
857 {
858 /* BQ27520 fuel-gauge */
859 .board_info = {
860 .type = "bq27520",
861 .addr = 0x55,
862 .dev_name = "bq27520",
863 .swnode = &fg_bq25890_supply_node,
864 },
865 .adapter_path = "\\_SB_.PCI0.I2C1",
866 }, {
867 /* KTD2026 RGB notification LED controller */
868 .board_info = {
869 .type = "ktd2026",
870 .addr = 0x30,
871 .dev_name = "ktd2026",
872 .swnode = &ktd2026_node,
873 },
874 .adapter_path = "\\_SB_.PCI0.I2C3",
875 },
876};
877
878const struct x86_dev_info xiaomi_mipad2_info __initconst = {
879 .i2c_client_info = xiaomi_mipad2_i2c_clients,
880 .i2c_client_count = ARRAY_SIZE(xiaomi_mipad2_i2c_clients),
881 .swnode_group = ktd2026_node_group,
882 .init = xiaomi_mipad2_init,
883};