1 // SPDX-License-Identifier: GPL-2.0-only
3 * Driver for Goodix Touchscreens
5 * Copyright (c) 2014 Red Hat Inc.
6 * Copyright (c) 2015 K. Merker <merker@debian.org>
8 * This code is based on gt9xx.c authored by andrew@goodix.com:
10 * 2010 - 2012 Goodix Technology.
14 #include <linux/kernel.h>
15 #include <linux/dmi.h>
16 #include <linux/firmware.h>
17 #include <linux/module.h>
18 #include <linux/delay.h>
19 #include <linux/irq.h>
20 #include <linux/interrupt.h>
21 #include <linux/platform_data/x86/soc.h>
22 #include <linux/slab.h>
23 #include <linux/acpi.h>
25 #include <asm/unaligned.h>
28 #define GOODIX_GPIO_INT_NAME "irq"
29 #define GOODIX_GPIO_RST_NAME "reset"
31 #define GOODIX_MAX_HEIGHT 4096
32 #define GOODIX_MAX_WIDTH 4096
33 #define GOODIX_INT_TRIGGER 1
34 #define GOODIX_CONTACT_SIZE 8
35 #define GOODIX_MAX_CONTACT_SIZE 9
36 #define GOODIX_MAX_CONTACTS 10
38 #define GOODIX_CONFIG_MIN_LENGTH 186
39 #define GOODIX_CONFIG_911_LENGTH 186
40 #define GOODIX_CONFIG_967_LENGTH 228
41 #define GOODIX_CONFIG_GT9X_LENGTH 240
43 #define GOODIX_BUFFER_STATUS_READY BIT(7)
44 #define GOODIX_HAVE_KEY BIT(4)
45 #define GOODIX_BUFFER_STATUS_TIMEOUT 20
47 #define RESOLUTION_LOC 1
48 #define MAX_CONTACTS_LOC 5
51 #define POLL_INTERVAL_MS 17 /* 17ms = 60fps */
53 /* Our special handling for GPIO accesses through ACPI is x86 specific */
54 #if defined CONFIG_X86 && defined CONFIG_ACPI
55 #define ACPI_GPIO_SUPPORT
58 struct goodix_chip_id {
60 const struct goodix_chip_data *data;
63 static int goodix_check_cfg_8(struct goodix_ts_data *ts,
64 const u8 *cfg, int len);
65 static int goodix_check_cfg_16(struct goodix_ts_data *ts,
66 const u8 *cfg, int len);
67 static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts);
68 static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts);
70 static const struct goodix_chip_data gt1x_chip_data = {
71 .config_addr = GOODIX_GT1X_REG_CONFIG_DATA,
72 .config_len = GOODIX_CONFIG_GT9X_LENGTH,
73 .check_config = goodix_check_cfg_16,
74 .calc_config_checksum = goodix_calc_cfg_checksum_16,
77 static const struct goodix_chip_data gt911_chip_data = {
78 .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
79 .config_len = GOODIX_CONFIG_911_LENGTH,
80 .check_config = goodix_check_cfg_8,
81 .calc_config_checksum = goodix_calc_cfg_checksum_8,
84 static const struct goodix_chip_data gt967_chip_data = {
85 .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
86 .config_len = GOODIX_CONFIG_967_LENGTH,
87 .check_config = goodix_check_cfg_8,
88 .calc_config_checksum = goodix_calc_cfg_checksum_8,
91 static const struct goodix_chip_data gt9x_chip_data = {
92 .config_addr = GOODIX_GT9X_REG_CONFIG_DATA,
93 .config_len = GOODIX_CONFIG_GT9X_LENGTH,
94 .check_config = goodix_check_cfg_8,
95 .calc_config_checksum = goodix_calc_cfg_checksum_8,
98 static const struct goodix_chip_id goodix_chip_ids[] = {
99 { .id = "1151", .data = >1x_chip_data },
100 { .id = "1158", .data = >1x_chip_data },
101 { .id = "5663", .data = >1x_chip_data },
102 { .id = "5688", .data = >1x_chip_data },
103 { .id = "917S", .data = >1x_chip_data },
104 { .id = "9286", .data = >1x_chip_data },
106 { .id = "911", .data = >911_chip_data },
107 { .id = "9271", .data = >911_chip_data },
108 { .id = "9110", .data = >911_chip_data },
109 { .id = "9111", .data = >911_chip_data },
110 { .id = "927", .data = >911_chip_data },
111 { .id = "928", .data = >911_chip_data },
113 { .id = "912", .data = >967_chip_data },
114 { .id = "9147", .data = >967_chip_data },
115 { .id = "967", .data = >967_chip_data },
119 static const unsigned long goodix_irq_flags[] = {
120 IRQ_TYPE_EDGE_RISING,
121 IRQ_TYPE_EDGE_FALLING,
126 static const struct dmi_system_id nine_bytes_report[] = {
127 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
129 /* Lenovo Yoga Book X90F / X90L */
131 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
132 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "CHERRYVIEW D1 PLATFORM"),
133 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "YETI-11"),
137 /* Lenovo Yoga Book X91F / X91L */
139 /* Non exact match to match F + L versions */
140 DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91"),
148 * Those tablets have their x coordinate inverted
150 static const struct dmi_system_id inverted_x_screen[] = {
151 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
153 .ident = "Cube I15-TC",
155 DMI_MATCH(DMI_SYS_VENDOR, "Cube"),
156 DMI_MATCH(DMI_PRODUCT_NAME, "I15-TC")
164 * goodix_i2c_read - read data from a register of the i2c slave device.
166 * @client: i2c device.
167 * @reg: the register to read from.
168 * @buf: raw write data buffer.
169 * @len: length of the buffer to write
171 int goodix_i2c_read(struct i2c_client *client, u16 reg, u8 *buf, int len)
173 struct i2c_msg msgs[2];
174 __be16 wbuf = cpu_to_be16(reg);
178 msgs[0].addr = client->addr;
180 msgs[0].buf = (u8 *)&wbuf;
182 msgs[1].flags = I2C_M_RD;
183 msgs[1].addr = client->addr;
187 ret = i2c_transfer(client->adapter, msgs, 2);
189 ret = (ret == ARRAY_SIZE(msgs) ? 0 : -EIO);
192 dev_err(&client->dev, "Error reading %d bytes from 0x%04x: %d\n",
198 * goodix_i2c_write - write data to a register of the i2c slave device.
200 * @client: i2c device.
201 * @reg: the register to write to.
202 * @buf: raw data buffer to write.
203 * @len: length of the buffer to write
205 int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, int len)
211 addr_buf = kmalloc(len + 2, GFP_KERNEL);
215 addr_buf[0] = reg >> 8;
216 addr_buf[1] = reg & 0xFF;
217 memcpy(&addr_buf[2], buf, len);
220 msg.addr = client->addr;
224 ret = i2c_transfer(client->adapter, &msg, 1);
226 ret = (ret == 1 ? 0 : -EIO);
231 dev_err(&client->dev, "Error writing %d bytes to 0x%04x: %d\n",
236 int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value)
238 return goodix_i2c_write(client, reg, &value, sizeof(value));
241 static const struct goodix_chip_data *goodix_get_chip_data(const char *id)
245 for (i = 0; goodix_chip_ids[i].id; i++) {
246 if (!strcmp(goodix_chip_ids[i].id, id))
247 return goodix_chip_ids[i].data;
250 return >9x_chip_data;
253 static int goodix_ts_read_input_report(struct goodix_ts_data *ts, u8 *data)
255 unsigned long max_timeout;
258 u16 addr = GOODIX_READ_COOR_ADDR;
260 * We are going to read 1-byte header,
261 * ts->contact_size * max(1, touch_num) bytes of coordinates
262 * and 1-byte footer which contains the touch-key code.
264 const int header_contact_keycode_size = 1 + ts->contact_size + 1;
267 * The 'buffer status' bit, which indicates that the data is valid, is
268 * not set as soon as the interrupt is raised, but slightly after.
269 * This takes around 10 ms to happen, so we poll for 20 ms.
271 max_timeout = jiffies + msecs_to_jiffies(GOODIX_BUFFER_STATUS_TIMEOUT);
273 error = goodix_i2c_read(ts->client, addr, data,
274 header_contact_keycode_size);
278 if (data[0] & GOODIX_BUFFER_STATUS_READY) {
279 touch_num = data[0] & 0x0f;
280 if (touch_num > ts->max_touch_num)
284 addr += header_contact_keycode_size;
285 data += header_contact_keycode_size;
286 error = goodix_i2c_read(ts->client,
297 if (data[0] == 0 && ts->firmware_name) {
298 if (goodix_handle_fw_request(ts))
302 usleep_range(1000, 2000); /* Poll every 1 - 2 ms */
303 } while (time_before(jiffies, max_timeout));
306 * The Goodix panel will send spurious interrupts after a
307 * 'finger up' event, which will always cause a timeout.
312 static int goodix_create_pen_input(struct goodix_ts_data *ts)
314 struct device *dev = &ts->client->dev;
315 struct input_dev *input;
317 input = devm_input_allocate_device(dev);
321 input_copy_abs(input, ABS_X, ts->input_dev, ABS_MT_POSITION_X);
322 input_copy_abs(input, ABS_Y, ts->input_dev, ABS_MT_POSITION_Y);
324 * The resolution of these touchscreens is about 10 units/mm, the actual
325 * resolution does not matter much since we set INPUT_PROP_DIRECT.
326 * Userspace wants something here though, so just set it to 10 units/mm.
328 input_abs_set_res(input, ABS_X, 10);
329 input_abs_set_res(input, ABS_Y, 10);
330 input_set_abs_params(input, ABS_PRESSURE, 0, 255, 0, 0);
332 input_set_capability(input, EV_KEY, BTN_TOUCH);
333 input_set_capability(input, EV_KEY, BTN_TOOL_PEN);
334 input_set_capability(input, EV_KEY, BTN_STYLUS);
335 input_set_capability(input, EV_KEY, BTN_STYLUS2);
336 __set_bit(INPUT_PROP_DIRECT, input->propbit);
338 input->name = "Goodix Active Pen";
339 input->phys = "input/pen";
340 input->id.bustype = BUS_I2C;
341 input->id.vendor = 0x0416;
342 if (kstrtou16(ts->id, 10, &input->id.product))
343 input->id.product = 0x1001;
344 input->id.version = ts->version;
346 ts->input_pen = input;
350 static void goodix_ts_report_pen_down(struct goodix_ts_data *ts, u8 *data)
352 int input_x, input_y, input_w, error;
355 if (!ts->pen_input_registered) {
356 error = input_register_device(ts->input_pen);
357 ts->pen_input_registered = (error == 0) ? 1 : error;
360 if (ts->pen_input_registered < 0)
363 if (ts->contact_size == 9) {
364 input_x = get_unaligned_le16(&data[4]);
365 input_y = get_unaligned_le16(&data[6]);
366 input_w = get_unaligned_le16(&data[8]);
368 input_x = get_unaligned_le16(&data[2]);
369 input_y = get_unaligned_le16(&data[4]);
370 input_w = get_unaligned_le16(&data[6]);
373 touchscreen_report_pos(ts->input_pen, &ts->prop, input_x, input_y, false);
374 input_report_abs(ts->input_pen, ABS_PRESSURE, input_w);
376 input_report_key(ts->input_pen, BTN_TOUCH, 1);
377 input_report_key(ts->input_pen, BTN_TOOL_PEN, 1);
379 if (data[0] & GOODIX_HAVE_KEY) {
380 key_value = data[1 + ts->contact_size];
381 input_report_key(ts->input_pen, BTN_STYLUS, key_value & 0x10);
382 input_report_key(ts->input_pen, BTN_STYLUS2, key_value & 0x20);
384 input_report_key(ts->input_pen, BTN_STYLUS, 0);
385 input_report_key(ts->input_pen, BTN_STYLUS2, 0);
388 input_sync(ts->input_pen);
391 static void goodix_ts_report_pen_up(struct goodix_ts_data *ts)
396 input_report_key(ts->input_pen, BTN_TOUCH, 0);
397 input_report_key(ts->input_pen, BTN_TOOL_PEN, 0);
398 input_report_key(ts->input_pen, BTN_STYLUS, 0);
399 input_report_key(ts->input_pen, BTN_STYLUS2, 0);
401 input_sync(ts->input_pen);
404 static void goodix_ts_report_touch_8b(struct goodix_ts_data *ts, u8 *coor_data)
406 int id = coor_data[0] & 0x0F;
407 int input_x = get_unaligned_le16(&coor_data[1]);
408 int input_y = get_unaligned_le16(&coor_data[3]);
409 int input_w = get_unaligned_le16(&coor_data[5]);
411 input_mt_slot(ts->input_dev, id);
412 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
413 touchscreen_report_pos(ts->input_dev, &ts->prop,
414 input_x, input_y, true);
415 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
416 input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
419 static void goodix_ts_report_touch_9b(struct goodix_ts_data *ts, u8 *coor_data)
421 int id = coor_data[1] & 0x0F;
422 int input_x = get_unaligned_le16(&coor_data[3]);
423 int input_y = get_unaligned_le16(&coor_data[5]);
424 int input_w = get_unaligned_le16(&coor_data[7]);
426 input_mt_slot(ts->input_dev, id);
427 input_mt_report_slot_state(ts->input_dev, MT_TOOL_FINGER, true);
428 touchscreen_report_pos(ts->input_dev, &ts->prop,
429 input_x, input_y, true);
430 input_report_abs(ts->input_dev, ABS_MT_TOUCH_MAJOR, input_w);
431 input_report_abs(ts->input_dev, ABS_MT_WIDTH_MAJOR, input_w);
434 static void goodix_ts_release_keys(struct goodix_ts_data *ts)
438 for (i = 0; i < GOODIX_MAX_KEYS; i++)
439 input_report_key(ts->input_dev, ts->keymap[i], 0);
442 static void goodix_ts_report_key(struct goodix_ts_data *ts, u8 *data)
448 if (data[0] & GOODIX_HAVE_KEY) {
449 touch_num = data[0] & 0x0f;
450 key_value = data[1 + ts->contact_size * touch_num];
451 for (i = 0; i < GOODIX_MAX_KEYS; i++)
452 if (key_value & BIT(i))
453 input_report_key(ts->input_dev,
456 goodix_ts_release_keys(ts);
461 * goodix_process_events - Process incoming events
463 * @ts: our goodix_ts_data pointer
465 * Called when the IRQ is triggered. Read the current device state, and push
466 * the input events to the user space.
468 static void goodix_process_events(struct goodix_ts_data *ts)
470 u8 point_data[2 + GOODIX_MAX_CONTACT_SIZE * GOODIX_MAX_CONTACTS];
474 touch_num = goodix_ts_read_input_report(ts, point_data);
478 /* The pen being down is always reported as a single touch */
479 if (touch_num == 1 && (point_data[1] & 0x80)) {
480 goodix_ts_report_pen_down(ts, point_data);
481 goodix_ts_release_keys(ts);
482 goto sync; /* Release any previously registered touches */
484 goodix_ts_report_pen_up(ts);
487 goodix_ts_report_key(ts, point_data);
489 for (i = 0; i < touch_num; i++)
490 if (ts->contact_size == 9)
491 goodix_ts_report_touch_9b(ts,
492 &point_data[1 + ts->contact_size * i]);
494 goodix_ts_report_touch_8b(ts,
495 &point_data[1 + ts->contact_size * i]);
498 input_mt_sync_frame(ts->input_dev);
499 input_sync(ts->input_dev);
503 * goodix_ts_irq_handler - The IRQ handler
505 * @irq: interrupt number.
506 * @dev_id: private data pointer.
508 static irqreturn_t goodix_ts_irq_handler(int irq, void *dev_id)
510 struct goodix_ts_data *ts = dev_id;
512 goodix_process_events(ts);
513 goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0);
518 static void goodix_ts_irq_poll_timer(struct timer_list *t)
520 struct goodix_ts_data *ts = from_timer(ts, t, timer);
522 schedule_work(&ts->work_i2c_poll);
523 mod_timer(&ts->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS));
526 static void goodix_ts_work_i2c_poll(struct work_struct *work)
528 struct goodix_ts_data *ts = container_of(work,
529 struct goodix_ts_data, work_i2c_poll);
531 goodix_process_events(ts);
532 goodix_i2c_write_u8(ts->client, GOODIX_READ_COOR_ADDR, 0);
535 static void goodix_enable_irq(struct goodix_ts_data *ts)
537 if (ts->client->irq) {
538 enable_irq(ts->client->irq);
540 ts->timer.expires = jiffies + msecs_to_jiffies(POLL_INTERVAL_MS);
541 add_timer(&ts->timer);
545 static void goodix_disable_irq(struct goodix_ts_data *ts)
547 if (ts->client->irq) {
548 disable_irq(ts->client->irq);
550 del_timer(&ts->timer);
551 cancel_work_sync(&ts->work_i2c_poll);
555 static void goodix_free_irq(struct goodix_ts_data *ts)
557 if (ts->client->irq) {
558 devm_free_irq(&ts->client->dev, ts->client->irq, ts);
560 del_timer(&ts->timer);
561 cancel_work_sync(&ts->work_i2c_poll);
565 static int goodix_request_irq(struct goodix_ts_data *ts)
567 if (ts->client->irq) {
568 return devm_request_threaded_irq(&ts->client->dev, ts->client->irq,
569 NULL, goodix_ts_irq_handler,
570 ts->irq_flags, ts->client->name, ts);
572 INIT_WORK(&ts->work_i2c_poll,
573 goodix_ts_work_i2c_poll);
574 timer_setup(&ts->timer, goodix_ts_irq_poll_timer, 0);
575 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE)
576 goodix_enable_irq(ts);
581 static int goodix_check_cfg_8(struct goodix_ts_data *ts, const u8 *cfg, int len)
583 int i, raw_cfg_len = len - 2;
586 for (i = 0; i < raw_cfg_len; i++)
588 check_sum = (~check_sum) + 1;
589 if (check_sum != cfg[raw_cfg_len]) {
590 dev_err(&ts->client->dev,
591 "The checksum of the config fw is not correct");
595 if (cfg[raw_cfg_len + 1] != 1) {
596 dev_err(&ts->client->dev,
597 "Config fw must have Config_Fresh register set");
604 static void goodix_calc_cfg_checksum_8(struct goodix_ts_data *ts)
606 int i, raw_cfg_len = ts->chip->config_len - 2;
609 for (i = 0; i < raw_cfg_len; i++)
610 check_sum += ts->config[i];
611 check_sum = (~check_sum) + 1;
613 ts->config[raw_cfg_len] = check_sum;
614 ts->config[raw_cfg_len + 1] = 1; /* Set "config_fresh" bit */
617 static int goodix_check_cfg_16(struct goodix_ts_data *ts, const u8 *cfg,
620 int i, raw_cfg_len = len - 3;
623 for (i = 0; i < raw_cfg_len; i += 2)
624 check_sum += get_unaligned_be16(&cfg[i]);
625 check_sum = (~check_sum) + 1;
626 if (check_sum != get_unaligned_be16(&cfg[raw_cfg_len])) {
627 dev_err(&ts->client->dev,
628 "The checksum of the config fw is not correct");
632 if (cfg[raw_cfg_len + 2] != 1) {
633 dev_err(&ts->client->dev,
634 "Config fw must have Config_Fresh register set");
641 static void goodix_calc_cfg_checksum_16(struct goodix_ts_data *ts)
643 int i, raw_cfg_len = ts->chip->config_len - 3;
646 for (i = 0; i < raw_cfg_len; i += 2)
647 check_sum += get_unaligned_be16(&ts->config[i]);
648 check_sum = (~check_sum) + 1;
650 put_unaligned_be16(check_sum, &ts->config[raw_cfg_len]);
651 ts->config[raw_cfg_len + 2] = 1; /* Set "config_fresh" bit */
655 * goodix_check_cfg - Checks if config fw is valid
657 * @ts: goodix_ts_data pointer
658 * @cfg: firmware config data
659 * @len: config data length
661 static int goodix_check_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
663 if (len < GOODIX_CONFIG_MIN_LENGTH ||
664 len > GOODIX_CONFIG_MAX_LENGTH) {
665 dev_err(&ts->client->dev,
666 "The length of the config fw is not correct");
670 return ts->chip->check_config(ts, cfg, len);
674 * goodix_send_cfg - Write fw config to device
676 * @ts: goodix_ts_data pointer
677 * @cfg: config firmware to write to device
678 * @len: config data length
680 int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len)
684 error = goodix_check_cfg(ts, cfg, len);
688 error = goodix_i2c_write(ts->client, ts->chip->config_addr, cfg, len);
692 dev_dbg(&ts->client->dev, "Config sent successfully.");
694 /* Let the firmware reconfigure itself, so sleep for 10ms */
695 usleep_range(10000, 11000);
700 #ifdef ACPI_GPIO_SUPPORT
701 static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
703 acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
706 status = acpi_evaluate_object(handle, "INTI", NULL, NULL);
707 return ACPI_SUCCESS(status) ? 0 : -EIO;
710 static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
712 acpi_handle handle = ACPI_HANDLE(&ts->client->dev);
715 status = acpi_execute_simple_method(handle, "INTO", value);
716 return ACPI_SUCCESS(status) ? 0 : -EIO;
719 static int goodix_pin_acpi_direction_input(struct goodix_ts_data *ts)
721 dev_err(&ts->client->dev,
722 "%s called on device without ACPI support\n", __func__);
726 static int goodix_pin_acpi_output_method(struct goodix_ts_data *ts, int value)
728 dev_err(&ts->client->dev,
729 "%s called on device without ACPI support\n", __func__);
734 static int goodix_irq_direction_output(struct goodix_ts_data *ts, int value)
736 switch (ts->irq_pin_access_method) {
737 case IRQ_PIN_ACCESS_NONE:
738 dev_err(&ts->client->dev,
739 "%s called without an irq_pin_access_method set\n",
742 case IRQ_PIN_ACCESS_GPIO:
743 return gpiod_direction_output(ts->gpiod_int, value);
744 case IRQ_PIN_ACCESS_ACPI_GPIO:
746 * The IRQ pin triggers on a falling edge, so its gets marked
747 * as active-low, use output_raw to avoid the value inversion.
749 return gpiod_direction_output_raw(ts->gpiod_int, value);
750 case IRQ_PIN_ACCESS_ACPI_METHOD:
751 return goodix_pin_acpi_output_method(ts, value);
754 return -EINVAL; /* Never reached */
757 static int goodix_irq_direction_input(struct goodix_ts_data *ts)
759 switch (ts->irq_pin_access_method) {
760 case IRQ_PIN_ACCESS_NONE:
761 dev_err(&ts->client->dev,
762 "%s called without an irq_pin_access_method set\n",
765 case IRQ_PIN_ACCESS_GPIO:
766 return gpiod_direction_input(ts->gpiod_int);
767 case IRQ_PIN_ACCESS_ACPI_GPIO:
768 return gpiod_direction_input(ts->gpiod_int);
769 case IRQ_PIN_ACCESS_ACPI_METHOD:
770 return goodix_pin_acpi_direction_input(ts);
773 return -EINVAL; /* Never reached */
776 int goodix_int_sync(struct goodix_ts_data *ts)
780 error = goodix_irq_direction_output(ts, 0);
784 msleep(50); /* T5: 50ms */
786 error = goodix_irq_direction_input(ts);
793 dev_err(&ts->client->dev, "Controller irq sync failed.\n");
798 * goodix_reset_no_int_sync - Reset device, leaving interrupt line in output mode
800 * @ts: goodix_ts_data pointer
802 int goodix_reset_no_int_sync(struct goodix_ts_data *ts)
806 /* begin select I2C slave addr */
807 error = gpiod_direction_output(ts->gpiod_rst, 0);
811 msleep(20); /* T2: > 10ms */
813 /* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */
814 error = goodix_irq_direction_output(ts, ts->client->addr == 0x14);
818 usleep_range(100, 2000); /* T3: > 100us */
820 error = gpiod_direction_output(ts->gpiod_rst, 1);
824 usleep_range(6000, 10000); /* T4: > 5ms */
827 * Put the reset pin back in to input / high-impedance mode to save
828 * power. Only do this in the non ACPI case since some ACPI boards
829 * don't have a pull-up, so there the reset pin must stay active-high.
831 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_GPIO) {
832 error = gpiod_direction_input(ts->gpiod_rst);
840 dev_err(&ts->client->dev, "Controller reset failed.\n");
845 * goodix_reset - Reset device during power on
847 * @ts: goodix_ts_data pointer
849 static int goodix_reset(struct goodix_ts_data *ts)
853 error = goodix_reset_no_int_sync(ts);
857 return goodix_int_sync(ts);
860 #ifdef ACPI_GPIO_SUPPORT
861 static const struct acpi_gpio_params first_gpio = { 0, 0, false };
862 static const struct acpi_gpio_params second_gpio = { 1, 0, false };
864 static const struct acpi_gpio_mapping acpi_goodix_int_first_gpios[] = {
865 { GOODIX_GPIO_INT_NAME "-gpios", &first_gpio, 1 },
866 { GOODIX_GPIO_RST_NAME "-gpios", &second_gpio, 1 },
870 static const struct acpi_gpio_mapping acpi_goodix_int_last_gpios[] = {
871 { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
872 { GOODIX_GPIO_INT_NAME "-gpios", &second_gpio, 1 },
876 static const struct acpi_gpio_mapping acpi_goodix_reset_only_gpios[] = {
877 { GOODIX_GPIO_RST_NAME "-gpios", &first_gpio, 1 },
881 static int goodix_resource(struct acpi_resource *ares, void *data)
883 struct goodix_ts_data *ts = data;
884 struct device *dev = &ts->client->dev;
885 struct acpi_resource_gpio *gpio;
887 if (acpi_gpio_get_irq_resource(ares, &gpio)) {
888 if (ts->gpio_int_idx == -1) {
889 ts->gpio_int_idx = ts->gpio_count;
891 dev_err(dev, "More then one GpioInt resource, ignoring ACPI GPIO resources\n");
892 ts->gpio_int_idx = -2;
895 } else if (acpi_gpio_get_io_resource(ares, &gpio))
902 * This function gets called in case we fail to get the irq GPIO directly
903 * because the ACPI tables lack GPIO-name to APCI _CRS index mappings
904 * (no _DSD UUID daffd814-6eba-4d8c-8a91-bc9bbf4aa301 data).
905 * In that case we add our own mapping and then goodix_get_gpio_config()
906 * retries to get the GPIOs based on the added mapping.
908 static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
910 const struct acpi_gpio_mapping *gpio_mapping = NULL;
911 struct device *dev = &ts->client->dev;
912 LIST_HEAD(resources);
916 ts->gpio_int_idx = -1;
917 ret = acpi_dev_get_resources(ACPI_COMPANION(dev), &resources,
918 goodix_resource, ts);
920 dev_err(dev, "Error getting ACPI resources: %d\n", ret);
924 acpi_dev_free_resource_list(&resources);
927 * CHT devices should have a GpioInt + a regular GPIO ACPI resource.
928 * Some CHT devices have a bug (where the also is bogus Interrupt
929 * resource copied from a previous BYT based generation). i2c-core-acpi
930 * will use the non-working Interrupt resource, fix this up.
932 if (soc_intel_is_cht() && ts->gpio_count == 2 && ts->gpio_int_idx != -1) {
933 irq = acpi_dev_gpio_irq_get(ACPI_COMPANION(dev), 0);
934 if (irq > 0 && irq != ts->client->irq) {
935 dev_warn(dev, "Overriding IRQ %d -> %d\n", ts->client->irq, irq);
936 ts->client->irq = irq;
940 if (ts->gpio_count == 2 && ts->gpio_int_idx == 0) {
941 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
942 gpio_mapping = acpi_goodix_int_first_gpios;
943 } else if (ts->gpio_count == 2 && ts->gpio_int_idx == 1) {
944 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
945 gpio_mapping = acpi_goodix_int_last_gpios;
946 } else if (ts->gpio_count == 1 && ts->gpio_int_idx == -1 &&
947 acpi_has_method(ACPI_HANDLE(dev), "INTI") &&
948 acpi_has_method(ACPI_HANDLE(dev), "INTO")) {
949 dev_info(dev, "Using ACPI INTI and INTO methods for IRQ pin access\n");
950 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_METHOD;
951 gpio_mapping = acpi_goodix_reset_only_gpios;
952 } else if (soc_intel_is_byt() && ts->gpio_count == 2 && ts->gpio_int_idx == -1) {
953 dev_info(dev, "No ACPI GpioInt resource, assuming that the GPIO order is reset, int\n");
954 ts->irq_pin_access_method = IRQ_PIN_ACCESS_ACPI_GPIO;
955 gpio_mapping = acpi_goodix_int_last_gpios;
956 } else if (ts->gpio_count == 1 && ts->gpio_int_idx == 0) {
958 * On newer devices there is only 1 GpioInt resource and _PS0
959 * does the whole reset sequence for us.
961 acpi_device_fix_up_power(ACPI_COMPANION(dev));
964 * Before the _PS0 call the int GPIO may have been in output
965 * mode and the call should have put the int GPIO in input mode,
966 * but the GPIO subsys cached state may still think it is
967 * in output mode, causing gpiochip_lock_as_irq() failure.
969 * Add a mapping for the int GPIO to make the
970 * gpiod_int = gpiod_get(..., GPIOD_IN) call succeed,
971 * which will explicitly set the direction to input.
973 ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
974 gpio_mapping = acpi_goodix_int_first_gpios;
976 dev_warn(dev, "Unexpected ACPI resources: gpio_count %d, gpio_int_idx %d\n",
977 ts->gpio_count, ts->gpio_int_idx);
979 * On some devices _PS0 does a reset for us and
980 * sometimes this is necessary for things to work.
982 acpi_device_fix_up_power(ACPI_COMPANION(dev));
987 * Normally we put the reset pin in input / high-impedance mode to save
988 * power. But some x86/ACPI boards don't have a pull-up, so for the ACPI
989 * case, leave the pin as is. This results in the pin not being touched
990 * at all on x86/ACPI boards, except when needed for error-recover.
992 ts->gpiod_rst_flags = GPIOD_ASIS;
994 return devm_acpi_dev_add_driver_gpios(dev, gpio_mapping);
997 static int goodix_add_acpi_gpio_mappings(struct goodix_ts_data *ts)
1001 #endif /* CONFIG_X86 && CONFIG_ACPI */
1004 * goodix_get_gpio_config - Get GPIO config from ACPI/DT
1006 * @ts: goodix_ts_data pointer
1008 static int goodix_get_gpio_config(struct goodix_ts_data *ts)
1011 struct gpio_desc *gpiod;
1012 bool added_acpi_mappings = false;
1016 dev = &ts->client->dev;
1019 * By default we request the reset pin as input, leaving it in
1020 * high-impedance when not resetting the controller to save power.
1022 ts->gpiod_rst_flags = GPIOD_IN;
1024 ts->avdd28 = devm_regulator_get(dev, "AVDD28");
1025 if (IS_ERR(ts->avdd28))
1026 return dev_err_probe(dev, PTR_ERR(ts->avdd28), "Failed to get AVDD28 regulator\n");
1028 ts->vddio = devm_regulator_get(dev, "VDDIO");
1029 if (IS_ERR(ts->vddio))
1030 return dev_err_probe(dev, PTR_ERR(ts->vddio), "Failed to get VDDIO regulator\n");
1033 /* Get the interrupt GPIO pin number */
1034 gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN);
1036 return dev_err_probe(dev, PTR_ERR(gpiod), "Failed to get %s GPIO\n",
1037 GOODIX_GPIO_INT_NAME);
1039 if (!gpiod && has_acpi_companion(dev) && !added_acpi_mappings) {
1040 added_acpi_mappings = true;
1041 if (goodix_add_acpi_gpio_mappings(ts) == 0)
1042 goto retry_get_irq_gpio;
1045 ts->gpiod_int = gpiod;
1047 /* Get the reset line GPIO pin number */
1048 gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_RST_NAME, ts->gpiod_rst_flags);
1050 return dev_err_probe(dev, PTR_ERR(gpiod), "Failed to get %s GPIO\n",
1051 GOODIX_GPIO_RST_NAME);
1053 ts->gpiod_rst = gpiod;
1055 switch (ts->irq_pin_access_method) {
1056 case IRQ_PIN_ACCESS_ACPI_GPIO:
1058 * We end up here if goodix_add_acpi_gpio_mappings() has
1059 * called devm_acpi_dev_add_driver_gpios() because the ACPI
1060 * tables did not contain name to index mappings.
1061 * Check that we successfully got both GPIOs after we've
1062 * added our own acpi_gpio_mapping and if we did not get both
1063 * GPIOs reset irq_pin_access_method to IRQ_PIN_ACCESS_NONE.
1065 if (!ts->gpiod_int || !ts->gpiod_rst)
1066 ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
1068 case IRQ_PIN_ACCESS_ACPI_METHOD:
1070 ts->irq_pin_access_method = IRQ_PIN_ACCESS_NONE;
1073 if (ts->gpiod_int && ts->gpiod_rst) {
1074 ts->reset_controller_at_probe = true;
1075 ts->load_cfg_from_disk = true;
1076 ts->irq_pin_access_method = IRQ_PIN_ACCESS_GPIO;
1084 * goodix_read_config - Read the embedded configuration of the panel
1086 * @ts: our goodix_ts_data pointer
1088 * Must be called during probe
1090 static void goodix_read_config(struct goodix_ts_data *ts)
1096 * On controllers where we need to upload the firmware
1097 * (controllers without flash) ts->config already has the config
1098 * at this point and the controller itself does not have it yet!
1100 if (!ts->firmware_name) {
1101 error = goodix_i2c_read(ts->client, ts->chip->config_addr,
1102 ts->config, ts->chip->config_len);
1104 ts->int_trigger_type = GOODIX_INT_TRIGGER;
1105 ts->max_touch_num = GOODIX_MAX_CONTACTS;
1110 ts->int_trigger_type = ts->config[TRIGGER_LOC] & 0x03;
1111 ts->max_touch_num = ts->config[MAX_CONTACTS_LOC] & 0x0f;
1113 x_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC]);
1114 y_max = get_unaligned_le16(&ts->config[RESOLUTION_LOC + 2]);
1115 if (x_max && y_max) {
1116 input_abs_set_max(ts->input_dev, ABS_MT_POSITION_X, x_max - 1);
1117 input_abs_set_max(ts->input_dev, ABS_MT_POSITION_Y, y_max - 1);
1120 ts->chip->calc_config_checksum(ts);
1124 * goodix_read_version - Read goodix touchscreen version
1126 * @ts: our goodix_ts_data pointer
1128 static int goodix_read_version(struct goodix_ts_data *ts)
1132 char id_str[GOODIX_ID_MAX_LEN + 1];
1134 error = goodix_i2c_read(ts->client, GOODIX_REG_ID, buf, sizeof(buf));
1138 memcpy(id_str, buf, GOODIX_ID_MAX_LEN);
1139 id_str[GOODIX_ID_MAX_LEN] = 0;
1140 strscpy(ts->id, id_str, GOODIX_ID_MAX_LEN + 1);
1142 ts->version = get_unaligned_le16(&buf[4]);
1144 dev_info(&ts->client->dev, "ID %s, version: %04x\n", ts->id,
1151 * goodix_i2c_test - I2C test function to check if the device answers.
1153 * @client: the i2c client
1155 static int goodix_i2c_test(struct i2c_client *client)
1161 while (retry++ < 2) {
1162 error = goodix_i2c_read(client, GOODIX_REG_ID, &test, 1);
1173 * goodix_configure_dev - Finish device initialization
1175 * @ts: our goodix_ts_data pointer
1177 * Must be called from probe to finish initialization of the device.
1178 * Contains the common initialization code for both devices that
1179 * declare gpio pins and devices that do not. It is either called
1180 * directly from probe or from request_firmware_wait callback.
1182 static int goodix_configure_dev(struct goodix_ts_data *ts)
1187 ts->int_trigger_type = GOODIX_INT_TRIGGER;
1188 ts->max_touch_num = GOODIX_MAX_CONTACTS;
1190 ts->input_dev = devm_input_allocate_device(&ts->client->dev);
1191 if (!ts->input_dev) {
1192 dev_err(&ts->client->dev, "Failed to allocate input device.");
1196 ts->input_dev->name = "Goodix Capacitive TouchScreen";
1197 ts->input_dev->phys = "input/ts";
1198 ts->input_dev->id.bustype = BUS_I2C;
1199 ts->input_dev->id.vendor = 0x0416;
1200 if (kstrtou16(ts->id, 10, &ts->input_dev->id.product))
1201 ts->input_dev->id.product = 0x1001;
1202 ts->input_dev->id.version = ts->version;
1204 ts->input_dev->keycode = ts->keymap;
1205 ts->input_dev->keycodesize = sizeof(ts->keymap[0]);
1206 ts->input_dev->keycodemax = GOODIX_MAX_KEYS;
1208 /* Capacitive Windows/Home button on some devices */
1209 for (i = 0; i < GOODIX_MAX_KEYS; ++i) {
1211 ts->keymap[i] = KEY_LEFTMETA;
1213 ts->keymap[i] = KEY_F1 + (i - 1);
1215 input_set_capability(ts->input_dev, EV_KEY, ts->keymap[i]);
1218 input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_X);
1219 input_set_capability(ts->input_dev, EV_ABS, ABS_MT_POSITION_Y);
1220 input_set_abs_params(ts->input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
1221 input_set_abs_params(ts->input_dev, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
1224 /* Read configuration and apply touchscreen parameters */
1225 goodix_read_config(ts);
1227 /* Try overriding touchscreen parameters via device properties */
1228 touchscreen_parse_properties(ts->input_dev, true, &ts->prop);
1230 if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) {
1231 if (!ts->reset_controller_at_probe &&
1232 ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) {
1233 dev_info(&ts->client->dev, "Config not set, resetting controller\n");
1234 /* Retry after a controller reset */
1235 ts->reset_controller_at_probe = true;
1236 error = goodix_reset(ts);
1239 goto retry_read_config;
1241 dev_err(&ts->client->dev,
1242 "Invalid config (%d, %d, %d), using defaults\n",
1243 ts->prop.max_x, ts->prop.max_y, ts->max_touch_num);
1244 ts->prop.max_x = GOODIX_MAX_WIDTH - 1;
1245 ts->prop.max_y = GOODIX_MAX_HEIGHT - 1;
1246 ts->max_touch_num = GOODIX_MAX_CONTACTS;
1247 input_abs_set_max(ts->input_dev,
1248 ABS_MT_POSITION_X, ts->prop.max_x);
1249 input_abs_set_max(ts->input_dev,
1250 ABS_MT_POSITION_Y, ts->prop.max_y);
1253 if (dmi_check_system(nine_bytes_report)) {
1254 ts->contact_size = 9;
1256 dev_dbg(&ts->client->dev,
1257 "Non-standard 9-bytes report format quirk\n");
1260 if (dmi_check_system(inverted_x_screen)) {
1261 ts->prop.invert_x = true;
1262 dev_dbg(&ts->client->dev,
1263 "Applying 'inverted x screen' quirk\n");
1266 error = input_mt_init_slots(ts->input_dev, ts->max_touch_num,
1267 INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED);
1269 dev_err(&ts->client->dev,
1270 "Failed to initialize MT slots: %d", error);
1274 error = input_register_device(ts->input_dev);
1276 dev_err(&ts->client->dev,
1277 "Failed to register input device: %d", error);
1282 * Create the input_pen device before goodix_request_irq() calls
1283 * devm_request_threaded_irq() so that the devm framework frees
1284 * it after disabling the irq.
1285 * Unfortunately there is no way to detect if the touchscreen has pen
1286 * support, so registering the dev is delayed till the first pen event.
1288 error = goodix_create_pen_input(ts);
1292 ts->irq_flags = goodix_irq_flags[ts->int_trigger_type] | IRQF_ONESHOT;
1293 error = goodix_request_irq(ts);
1295 dev_err(&ts->client->dev, "request IRQ failed: %d\n", error);
1303 * goodix_config_cb - Callback to finish device init
1305 * @cfg: firmware config
1306 * @ctx: our goodix_ts_data pointer
1308 * request_firmware_wait callback that finishes
1309 * initialization of the device.
1311 static void goodix_config_cb(const struct firmware *cfg, void *ctx)
1313 struct goodix_ts_data *ts = ctx;
1316 if (ts->firmware_name) {
1318 goto err_release_cfg;
1320 error = goodix_check_cfg(ts, cfg->data, cfg->size);
1322 goto err_release_cfg;
1324 memcpy(ts->config, cfg->data, cfg->size);
1326 /* send device configuration to the firmware */
1327 error = goodix_send_cfg(ts, cfg->data, cfg->size);
1329 goto err_release_cfg;
1332 goodix_configure_dev(ts);
1335 release_firmware(cfg);
1336 complete_all(&ts->firmware_loading_complete);
1339 static void goodix_disable_regulators(void *arg)
1341 struct goodix_ts_data *ts = arg;
1343 regulator_disable(ts->vddio);
1344 regulator_disable(ts->avdd28);
1347 static int goodix_ts_probe(struct i2c_client *client)
1349 struct goodix_ts_data *ts;
1350 const char *cfg_name;
1353 dev_dbg(&client->dev, "I2C Address: 0x%02x\n", client->addr);
1355 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
1356 dev_err(&client->dev, "I2C check functionality failed.\n");
1360 ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL);
1364 ts->client = client;
1365 i2c_set_clientdata(client, ts);
1366 init_completion(&ts->firmware_loading_complete);
1367 ts->contact_size = GOODIX_CONTACT_SIZE;
1369 error = goodix_get_gpio_config(ts);
1373 /* power up the controller */
1374 error = regulator_enable(ts->avdd28);
1376 dev_err(&client->dev,
1377 "Failed to enable AVDD28 regulator: %d\n",
1382 error = regulator_enable(ts->vddio);
1384 dev_err(&client->dev,
1385 "Failed to enable VDDIO regulator: %d\n",
1387 regulator_disable(ts->avdd28);
1391 error = devm_add_action_or_reset(&client->dev,
1392 goodix_disable_regulators, ts);
1397 if (ts->reset_controller_at_probe) {
1398 /* reset the controller */
1399 error = goodix_reset(ts);
1404 error = goodix_i2c_test(client);
1406 if (!ts->reset_controller_at_probe &&
1407 ts->irq_pin_access_method != IRQ_PIN_ACCESS_NONE) {
1408 /* Retry after a controller reset */
1409 ts->reset_controller_at_probe = true;
1412 dev_err(&client->dev, "I2C communication failure: %d\n", error);
1416 error = goodix_firmware_check(ts);
1420 error = goodix_read_version(ts);
1424 ts->chip = goodix_get_chip_data(ts->id);
1426 if (ts->load_cfg_from_disk) {
1427 /* update device config */
1428 error = device_property_read_string(&client->dev,
1429 "goodix,config-name",
1432 snprintf(ts->cfg_name, sizeof(ts->cfg_name),
1433 "goodix/%s", cfg_name);
1435 snprintf(ts->cfg_name, sizeof(ts->cfg_name),
1436 "goodix_%s_cfg.bin", ts->id);
1438 error = request_firmware_nowait(THIS_MODULE, true, ts->cfg_name,
1439 &client->dev, GFP_KERNEL, ts,
1442 dev_err(&client->dev,
1443 "Failed to invoke firmware loader: %d\n",
1450 error = goodix_configure_dev(ts);
1458 static void goodix_ts_remove(struct i2c_client *client)
1460 struct goodix_ts_data *ts = i2c_get_clientdata(client);
1463 del_timer(&ts->timer);
1464 cancel_work_sync(&ts->work_i2c_poll);
1467 if (ts->load_cfg_from_disk)
1468 wait_for_completion(&ts->firmware_loading_complete);
1471 static int goodix_suspend(struct device *dev)
1473 struct i2c_client *client = to_i2c_client(dev);
1474 struct goodix_ts_data *ts = i2c_get_clientdata(client);
1477 if (ts->load_cfg_from_disk)
1478 wait_for_completion(&ts->firmware_loading_complete);
1480 /* We need gpio pins to suspend/resume */
1481 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
1482 goodix_disable_irq(ts);
1486 /* Free IRQ as IRQ pin is used as output in the suspend sequence */
1487 goodix_free_irq(ts);
1489 /* Save reference (calibration) info if necessary */
1490 goodix_save_bak_ref(ts);
1492 /* Output LOW on the INT pin for 5 ms */
1493 error = goodix_irq_direction_output(ts, 0);
1495 goodix_request_irq(ts);
1499 usleep_range(5000, 6000);
1501 error = goodix_i2c_write_u8(ts->client, GOODIX_REG_COMMAND,
1502 GOODIX_CMD_SCREEN_OFF);
1504 goodix_irq_direction_input(ts);
1505 goodix_request_irq(ts);
1510 * The datasheet specifies that the interval between sending screen-off
1511 * command and wake-up should be longer than 58 ms. To avoid waking up
1512 * sooner, delay 58ms here.
1518 static int goodix_resume(struct device *dev)
1520 struct i2c_client *client = to_i2c_client(dev);
1521 struct goodix_ts_data *ts = i2c_get_clientdata(client);
1525 if (ts->irq_pin_access_method == IRQ_PIN_ACCESS_NONE) {
1526 goodix_enable_irq(ts);
1531 * Exit sleep mode by outputting HIGH level to INT pin
1534 error = goodix_irq_direction_output(ts, 1);
1538 usleep_range(2000, 5000);
1540 error = goodix_int_sync(ts);
1544 error = goodix_i2c_read(ts->client, ts->chip->config_addr,
1546 if (!error && config_ver != ts->config[0])
1547 dev_info(dev, "Config version mismatch %d != %d, resetting controller\n",
1548 config_ver, ts->config[0]);
1550 if (error != 0 || config_ver != ts->config[0]) {
1551 error = goodix_reset(ts);
1555 error = goodix_send_cfg(ts, ts->config, ts->chip->config_len);
1560 error = goodix_request_irq(ts);
1567 static DEFINE_SIMPLE_DEV_PM_OPS(goodix_pm_ops, goodix_suspend, goodix_resume);
1569 static const struct i2c_device_id goodix_ts_id[] = {
1570 { "GDIX1001:00", 0 },
1573 MODULE_DEVICE_TABLE(i2c, goodix_ts_id);
1576 static const struct acpi_device_id goodix_acpi_match[] = {
1582 MODULE_DEVICE_TABLE(acpi, goodix_acpi_match);
1586 static const struct of_device_id goodix_of_match[] = {
1587 { .compatible = "goodix,gt1151" },
1588 { .compatible = "goodix,gt1158" },
1589 { .compatible = "goodix,gt5663" },
1590 { .compatible = "goodix,gt5688" },
1591 { .compatible = "goodix,gt911" },
1592 { .compatible = "goodix,gt9110" },
1593 { .compatible = "goodix,gt912" },
1594 { .compatible = "goodix,gt9147" },
1595 { .compatible = "goodix,gt917s" },
1596 { .compatible = "goodix,gt927" },
1597 { .compatible = "goodix,gt9271" },
1598 { .compatible = "goodix,gt928" },
1599 { .compatible = "goodix,gt9286" },
1600 { .compatible = "goodix,gt967" },
1603 MODULE_DEVICE_TABLE(of, goodix_of_match);
1606 static struct i2c_driver goodix_ts_driver = {
1607 .probe = goodix_ts_probe,
1608 .remove = goodix_ts_remove,
1609 .id_table = goodix_ts_id,
1611 .name = "Goodix-TS",
1612 .acpi_match_table = ACPI_PTR(goodix_acpi_match),
1613 .of_match_table = of_match_ptr(goodix_of_match),
1614 .pm = pm_sleep_ptr(&goodix_pm_ops),
1617 module_i2c_driver(goodix_ts_driver);
1619 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
1620 MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
1621 MODULE_DESCRIPTION("Goodix touchscreen driver");
1622 MODULE_LICENSE("GPL v2");