2 * Driver for Goodix Touchscreens
4 * Copyright (c) 2014 Red Hat Inc.
5 * Copyright (c) 2015 K. Merker <merker@debian.org>
7 * This code is based on gt9xx.c authored by andrew@goodix.com:
9 * 2010 - 2012 Goodix Technology.
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; version 2 of the License.
18 #include <linux/kernel.h>
19 #include <linux/dmi.h>
20 #include <linux/firmware.h>
21 #include <linux/gpio/consumer.h>
22 #include <linux/i2c.h>
23 #include <linux/input.h>
24 #include <linux/input/mt.h>
25 #include <linux/module.h>
26 #include <linux/delay.h>
27 #include <linux/irq.h>
28 #include <linux/interrupt.h>
29 #include <linux/slab.h>
30 #include <linux/acpi.h>
32 #include <asm/unaligned.h>
34 struct goodix_ts_data
{
35 struct i2c_client
*client
;
36 struct input_dev
*input_dev
;
42 unsigned int max_touch_num
;
43 unsigned int int_trigger_type
;
45 struct gpio_desc
*gpiod_int
;
46 struct gpio_desc
*gpiod_rst
;
50 struct completion firmware_loading_complete
;
51 unsigned long irq_flags
;
54 #define GOODIX_GPIO_INT_NAME "irq"
55 #define GOODIX_GPIO_RST_NAME "reset"
57 #define GOODIX_MAX_HEIGHT 4096
58 #define GOODIX_MAX_WIDTH 4096
59 #define GOODIX_INT_TRIGGER 1
60 #define GOODIX_CONTACT_SIZE 8
61 #define GOODIX_MAX_CONTACTS 10
63 #define GOODIX_CONFIG_MAX_LENGTH 240
64 #define GOODIX_CONFIG_911_LENGTH 186
65 #define GOODIX_CONFIG_967_LENGTH 228
67 /* Register defines */
68 #define GOODIX_REG_COMMAND 0x8040
69 #define GOODIX_CMD_SCREEN_OFF 0x05
71 #define GOODIX_READ_COOR_ADDR 0x814E
72 #define GOODIX_REG_CONFIG_DATA 0x8047
73 #define GOODIX_REG_ID 0x8140
75 #define RESOLUTION_LOC 1
76 #define MAX_CONTACTS_LOC 5
79 static const unsigned long goodix_irq_flags
[] = {
81 IRQ_TYPE_EDGE_FALLING
,
87 * Those tablets have their coordinates origin at the bottom right
88 * of the tablet, as if rotated 180 degrees
90 static const struct dmi_system_id rotated_screen
[] = {
91 #if defined(CONFIG_DMI) && defined(CONFIG_X86)
93 .ident
= "WinBook TW100",
95 DMI_MATCH(DMI_SYS_VENDOR
, "WinBook"),
96 DMI_MATCH(DMI_PRODUCT_NAME
, "TW100")
100 .ident
= "WinBook TW700",
102 DMI_MATCH(DMI_SYS_VENDOR
, "WinBook"),
103 DMI_MATCH(DMI_PRODUCT_NAME
, "TW700")
111 * goodix_i2c_read - read data from a register of the i2c slave device.
113 * @client: i2c device.
114 * @reg: the register to read from.
115 * @buf: raw write data buffer.
116 * @len: length of the buffer to write
118 static int goodix_i2c_read(struct i2c_client
*client
,
119 u16 reg
, u8
*buf
, int len
)
121 struct i2c_msg msgs
[2];
122 u16 wbuf
= cpu_to_be16(reg
);
126 msgs
[0].addr
= client
->addr
;
128 msgs
[0].buf
= (u8
*)&wbuf
;
130 msgs
[1].flags
= I2C_M_RD
;
131 msgs
[1].addr
= client
->addr
;
135 ret
= i2c_transfer(client
->adapter
, msgs
, 2);
136 return ret
< 0 ? ret
: (ret
!= ARRAY_SIZE(msgs
) ? -EIO
: 0);
140 * goodix_i2c_write - write data to a register of the i2c slave device.
142 * @client: i2c device.
143 * @reg: the register to write to.
144 * @buf: raw data buffer to write.
145 * @len: length of the buffer to write
147 static int goodix_i2c_write(struct i2c_client
*client
, u16 reg
, const u8
*buf
,
154 addr_buf
= kmalloc(len
+ 2, GFP_KERNEL
);
158 addr_buf
[0] = reg
>> 8;
159 addr_buf
[1] = reg
& 0xFF;
160 memcpy(&addr_buf
[2], buf
, len
);
163 msg
.addr
= client
->addr
;
167 ret
= i2c_transfer(client
->adapter
, &msg
, 1);
169 return ret
< 0 ? ret
: (ret
!= 1 ? -EIO
: 0);
172 static int goodix_i2c_write_u8(struct i2c_client
*client
, u16 reg
, u8 value
)
174 return goodix_i2c_write(client
, reg
, &value
, sizeof(value
));
177 static int goodix_get_cfg_len(u16 id
)
185 return GOODIX_CONFIG_911_LENGTH
;
189 return GOODIX_CONFIG_967_LENGTH
;
192 return GOODIX_CONFIG_MAX_LENGTH
;
196 static int goodix_ts_read_input_report(struct goodix_ts_data
*ts
, u8
*data
)
201 error
= goodix_i2c_read(ts
->client
, GOODIX_READ_COOR_ADDR
, data
,
202 GOODIX_CONTACT_SIZE
+ 1);
204 dev_err(&ts
->client
->dev
, "I2C transfer error: %d\n", error
);
208 if (!(data
[0] & 0x80))
211 touch_num
= data
[0] & 0x0f;
212 if (touch_num
> ts
->max_touch_num
)
216 data
+= 1 + GOODIX_CONTACT_SIZE
;
217 error
= goodix_i2c_read(ts
->client
,
218 GOODIX_READ_COOR_ADDR
+
219 1 + GOODIX_CONTACT_SIZE
,
221 GOODIX_CONTACT_SIZE
* (touch_num
- 1));
229 static void goodix_ts_report_touch(struct goodix_ts_data
*ts
, u8
*coor_data
)
231 int id
= coor_data
[0] & 0x0F;
232 int input_x
= get_unaligned_le16(&coor_data
[1]);
233 int input_y
= get_unaligned_le16(&coor_data
[3]);
234 int input_w
= get_unaligned_le16(&coor_data
[5]);
236 /* Inversions have to happen before axis swapping */
238 input_x
= ts
->abs_x_max
- input_x
;
240 input_y
= ts
->abs_y_max
- input_y
;
242 swap(input_x
, input_y
);
244 input_mt_slot(ts
->input_dev
, id
);
245 input_mt_report_slot_state(ts
->input_dev
, MT_TOOL_FINGER
, true);
246 input_report_abs(ts
->input_dev
, ABS_MT_POSITION_X
, input_x
);
247 input_report_abs(ts
->input_dev
, ABS_MT_POSITION_Y
, input_y
);
248 input_report_abs(ts
->input_dev
, ABS_MT_TOUCH_MAJOR
, input_w
);
249 input_report_abs(ts
->input_dev
, ABS_MT_WIDTH_MAJOR
, input_w
);
253 * goodix_process_events - Process incoming events
255 * @ts: our goodix_ts_data pointer
257 * Called when the IRQ is triggered. Read the current device state, and push
258 * the input events to the user space.
260 static void goodix_process_events(struct goodix_ts_data
*ts
)
262 u8 point_data
[1 + GOODIX_CONTACT_SIZE
* GOODIX_MAX_CONTACTS
];
266 touch_num
= goodix_ts_read_input_report(ts
, point_data
);
271 * Bit 4 of the first byte reports the status of the capacitive
272 * Windows/Home button.
274 input_report_key(ts
->input_dev
, KEY_LEFTMETA
, point_data
[0] & BIT(4));
276 for (i
= 0; i
< touch_num
; i
++)
277 goodix_ts_report_touch(ts
,
278 &point_data
[1 + GOODIX_CONTACT_SIZE
* i
]);
280 input_mt_sync_frame(ts
->input_dev
);
281 input_sync(ts
->input_dev
);
285 * goodix_ts_irq_handler - The IRQ handler
287 * @irq: interrupt number.
288 * @dev_id: private data pointer.
290 static irqreturn_t
goodix_ts_irq_handler(int irq
, void *dev_id
)
292 struct goodix_ts_data
*ts
= dev_id
;
294 goodix_process_events(ts
);
296 if (goodix_i2c_write_u8(ts
->client
, GOODIX_READ_COOR_ADDR
, 0) < 0)
297 dev_err(&ts
->client
->dev
, "I2C write end_cmd error\n");
302 static void goodix_free_irq(struct goodix_ts_data
*ts
)
304 devm_free_irq(&ts
->client
->dev
, ts
->client
->irq
, ts
);
307 static int goodix_request_irq(struct goodix_ts_data
*ts
)
309 return devm_request_threaded_irq(&ts
->client
->dev
, ts
->client
->irq
,
310 NULL
, goodix_ts_irq_handler
,
311 ts
->irq_flags
, ts
->client
->name
, ts
);
315 * goodix_check_cfg - Checks if config fw is valid
317 * @ts: goodix_ts_data pointer
318 * @cfg: firmware config data
320 static int goodix_check_cfg(struct goodix_ts_data
*ts
,
321 const struct firmware
*cfg
)
326 if (cfg
->size
> GOODIX_CONFIG_MAX_LENGTH
) {
327 dev_err(&ts
->client
->dev
,
328 "The length of the config fw is not correct");
332 raw_cfg_len
= cfg
->size
- 2;
333 for (i
= 0; i
< raw_cfg_len
; i
++)
334 check_sum
+= cfg
->data
[i
];
335 check_sum
= (~check_sum
) + 1;
336 if (check_sum
!= cfg
->data
[raw_cfg_len
]) {
337 dev_err(&ts
->client
->dev
,
338 "The checksum of the config fw is not correct");
342 if (cfg
->data
[raw_cfg_len
+ 1] != 1) {
343 dev_err(&ts
->client
->dev
,
344 "Config fw must have Config_Fresh register set");
352 * goodix_send_cfg - Write fw config to device
354 * @ts: goodix_ts_data pointer
355 * @cfg: config firmware to write to device
357 static int goodix_send_cfg(struct goodix_ts_data
*ts
,
358 const struct firmware
*cfg
)
362 error
= goodix_check_cfg(ts
, cfg
);
366 error
= goodix_i2c_write(ts
->client
, GOODIX_REG_CONFIG_DATA
, cfg
->data
,
369 dev_err(&ts
->client
->dev
, "Failed to write config data: %d",
373 dev_dbg(&ts
->client
->dev
, "Config sent successfully.");
375 /* Let the firmware reconfigure itself, so sleep for 10ms */
376 usleep_range(10000, 11000);
381 static int goodix_int_sync(struct goodix_ts_data
*ts
)
385 error
= gpiod_direction_output(ts
->gpiod_int
, 0);
389 msleep(50); /* T5: 50ms */
391 error
= gpiod_direction_input(ts
->gpiod_int
);
399 * goodix_reset - Reset device during power on
401 * @ts: goodix_ts_data pointer
403 static int goodix_reset(struct goodix_ts_data
*ts
)
407 /* begin select I2C slave addr */
408 error
= gpiod_direction_output(ts
->gpiod_rst
, 0);
412 msleep(20); /* T2: > 10ms */
414 /* HIGH: 0x28/0x29, LOW: 0xBA/0xBB */
415 error
= gpiod_direction_output(ts
->gpiod_int
, ts
->client
->addr
== 0x14);
419 usleep_range(100, 2000); /* T3: > 100us */
421 error
= gpiod_direction_output(ts
->gpiod_rst
, 1);
425 usleep_range(6000, 10000); /* T4: > 5ms */
427 /* end select I2C slave addr */
428 error
= gpiod_direction_input(ts
->gpiod_rst
);
432 error
= goodix_int_sync(ts
);
440 * goodix_get_gpio_config - Get GPIO config from ACPI/DT
442 * @ts: goodix_ts_data pointer
444 static int goodix_get_gpio_config(struct goodix_ts_data
*ts
)
448 struct gpio_desc
*gpiod
;
452 dev
= &ts
->client
->dev
;
454 /* Get the interrupt GPIO pin number */
455 gpiod
= devm_gpiod_get_optional(dev
, GOODIX_GPIO_INT_NAME
, GPIOD_IN
);
457 error
= PTR_ERR(gpiod
);
458 if (error
!= -EPROBE_DEFER
)
459 dev_dbg(dev
, "Failed to get %s GPIO: %d\n",
460 GOODIX_GPIO_INT_NAME
, error
);
464 ts
->gpiod_int
= gpiod
;
466 /* Get the reset line GPIO pin number */
467 gpiod
= devm_gpiod_get_optional(dev
, GOODIX_GPIO_RST_NAME
, GPIOD_IN
);
469 error
= PTR_ERR(gpiod
);
470 if (error
!= -EPROBE_DEFER
)
471 dev_dbg(dev
, "Failed to get %s GPIO: %d\n",
472 GOODIX_GPIO_RST_NAME
, error
);
476 ts
->gpiod_rst
= gpiod
;
482 * goodix_read_config - Read the embedded configuration of the panel
484 * @ts: our goodix_ts_data pointer
486 * Must be called during probe
488 static void goodix_read_config(struct goodix_ts_data
*ts
)
490 u8 config
[GOODIX_CONFIG_MAX_LENGTH
];
493 error
= goodix_i2c_read(ts
->client
, GOODIX_REG_CONFIG_DATA
,
494 config
, ts
->cfg_len
);
496 dev_warn(&ts
->client
->dev
,
497 "Error reading config (%d), using defaults\n",
499 ts
->abs_x_max
= GOODIX_MAX_WIDTH
;
500 ts
->abs_y_max
= GOODIX_MAX_HEIGHT
;
502 swap(ts
->abs_x_max
, ts
->abs_y_max
);
503 ts
->int_trigger_type
= GOODIX_INT_TRIGGER
;
504 ts
->max_touch_num
= GOODIX_MAX_CONTACTS
;
508 ts
->abs_x_max
= get_unaligned_le16(&config
[RESOLUTION_LOC
]);
509 ts
->abs_y_max
= get_unaligned_le16(&config
[RESOLUTION_LOC
+ 2]);
511 swap(ts
->abs_x_max
, ts
->abs_y_max
);
512 ts
->int_trigger_type
= config
[TRIGGER_LOC
] & 0x03;
513 ts
->max_touch_num
= config
[MAX_CONTACTS_LOC
] & 0x0f;
514 if (!ts
->abs_x_max
|| !ts
->abs_y_max
|| !ts
->max_touch_num
) {
515 dev_err(&ts
->client
->dev
,
516 "Invalid config, using defaults\n");
517 ts
->abs_x_max
= GOODIX_MAX_WIDTH
;
518 ts
->abs_y_max
= GOODIX_MAX_HEIGHT
;
520 swap(ts
->abs_x_max
, ts
->abs_y_max
);
521 ts
->max_touch_num
= GOODIX_MAX_CONTACTS
;
524 if (dmi_check_system(rotated_screen
)) {
525 ts
->inverted_x
= true;
526 ts
->inverted_y
= true;
527 dev_dbg(&ts
->client
->dev
,
528 "Applying '180 degrees rotated screen' quirk\n");
533 * goodix_read_version - Read goodix touchscreen version
535 * @ts: our goodix_ts_data pointer
537 static int goodix_read_version(struct goodix_ts_data
*ts
)
543 error
= goodix_i2c_read(ts
->client
, GOODIX_REG_ID
, buf
, sizeof(buf
));
545 dev_err(&ts
->client
->dev
, "read version failed: %d\n", error
);
549 memcpy(id_str
, buf
, 4);
551 if (kstrtou16(id_str
, 10, &ts
->id
))
554 ts
->version
= get_unaligned_le16(&buf
[4]);
556 dev_info(&ts
->client
->dev
, "ID %d, version: %04x\n", ts
->id
,
563 * goodix_i2c_test - I2C test function to check if the device answers.
565 * @client: the i2c client
567 static int goodix_i2c_test(struct i2c_client
*client
)
573 while (retry
++ < 2) {
574 error
= goodix_i2c_read(client
, GOODIX_REG_CONFIG_DATA
,
579 dev_err(&client
->dev
, "i2c test failed attempt %d: %d\n",
588 * goodix_request_input_dev - Allocate, populate and register the input device
590 * @ts: our goodix_ts_data pointer
592 * Must be called during probe
594 static int goodix_request_input_dev(struct goodix_ts_data
*ts
)
598 ts
->input_dev
= devm_input_allocate_device(&ts
->client
->dev
);
599 if (!ts
->input_dev
) {
600 dev_err(&ts
->client
->dev
, "Failed to allocate input device.");
604 input_set_abs_params(ts
->input_dev
, ABS_MT_POSITION_X
,
605 0, ts
->abs_x_max
, 0, 0);
606 input_set_abs_params(ts
->input_dev
, ABS_MT_POSITION_Y
,
607 0, ts
->abs_y_max
, 0, 0);
608 input_set_abs_params(ts
->input_dev
, ABS_MT_WIDTH_MAJOR
, 0, 255, 0, 0);
609 input_set_abs_params(ts
->input_dev
, ABS_MT_TOUCH_MAJOR
, 0, 255, 0, 0);
611 input_mt_init_slots(ts
->input_dev
, ts
->max_touch_num
,
612 INPUT_MT_DIRECT
| INPUT_MT_DROP_UNUSED
);
614 ts
->input_dev
->name
= "Goodix Capacitive TouchScreen";
615 ts
->input_dev
->phys
= "input/ts";
616 ts
->input_dev
->id
.bustype
= BUS_I2C
;
617 ts
->input_dev
->id
.vendor
= 0x0416;
618 ts
->input_dev
->id
.product
= ts
->id
;
619 ts
->input_dev
->id
.version
= ts
->version
;
621 /* Capacitive Windows/Home button on some devices */
622 input_set_capability(ts
->input_dev
, EV_KEY
, KEY_LEFTMETA
);
624 error
= input_register_device(ts
->input_dev
);
626 dev_err(&ts
->client
->dev
,
627 "Failed to register input device: %d", error
);
635 * goodix_configure_dev - Finish device initialization
637 * @ts: our goodix_ts_data pointer
639 * Must be called from probe to finish initialization of the device.
640 * Contains the common initialization code for both devices that
641 * declare gpio pins and devices that do not. It is either called
642 * directly from probe or from request_firmware_wait callback.
644 static int goodix_configure_dev(struct goodix_ts_data
*ts
)
648 ts
->swapped_x_y
= device_property_read_bool(&ts
->client
->dev
,
649 "touchscreen-swapped-x-y");
650 ts
->inverted_x
= device_property_read_bool(&ts
->client
->dev
,
651 "touchscreen-inverted-x");
652 ts
->inverted_y
= device_property_read_bool(&ts
->client
->dev
,
653 "touchscreen-inverted-y");
655 goodix_read_config(ts
);
657 error
= goodix_request_input_dev(ts
);
661 ts
->irq_flags
= goodix_irq_flags
[ts
->int_trigger_type
] | IRQF_ONESHOT
;
662 error
= goodix_request_irq(ts
);
664 dev_err(&ts
->client
->dev
, "request IRQ failed: %d\n", error
);
672 * goodix_config_cb - Callback to finish device init
674 * @ts: our goodix_ts_data pointer
676 * request_firmware_wait callback that finishes
677 * initialization of the device.
679 static void goodix_config_cb(const struct firmware
*cfg
, void *ctx
)
681 struct goodix_ts_data
*ts
= ctx
;
685 /* send device configuration to the firmware */
686 error
= goodix_send_cfg(ts
, cfg
);
688 goto err_release_cfg
;
691 goodix_configure_dev(ts
);
694 release_firmware(cfg
);
695 complete_all(&ts
->firmware_loading_complete
);
698 static int goodix_ts_probe(struct i2c_client
*client
,
699 const struct i2c_device_id
*id
)
701 struct goodix_ts_data
*ts
;
704 dev_dbg(&client
->dev
, "I2C Address: 0x%02x\n", client
->addr
);
706 if (!i2c_check_functionality(client
->adapter
, I2C_FUNC_I2C
)) {
707 dev_err(&client
->dev
, "I2C check functionality failed.\n");
711 ts
= devm_kzalloc(&client
->dev
, sizeof(*ts
), GFP_KERNEL
);
716 i2c_set_clientdata(client
, ts
);
717 init_completion(&ts
->firmware_loading_complete
);
719 error
= goodix_get_gpio_config(ts
);
723 if (ts
->gpiod_int
&& ts
->gpiod_rst
) {
724 /* reset the controller */
725 error
= goodix_reset(ts
);
727 dev_err(&client
->dev
, "Controller reset failed.\n");
732 error
= goodix_i2c_test(client
);
734 dev_err(&client
->dev
, "I2C communication failure: %d\n", error
);
738 error
= goodix_read_version(ts
);
740 dev_err(&client
->dev
, "Read version failed.\n");
744 ts
->cfg_len
= goodix_get_cfg_len(ts
->id
);
746 if (ts
->gpiod_int
&& ts
->gpiod_rst
) {
747 /* update device config */
748 ts
->cfg_name
= devm_kasprintf(&client
->dev
, GFP_KERNEL
,
749 "goodix_%d_cfg.bin", ts
->id
);
753 error
= request_firmware_nowait(THIS_MODULE
, true, ts
->cfg_name
,
754 &client
->dev
, GFP_KERNEL
, ts
,
757 dev_err(&client
->dev
,
758 "Failed to invoke firmware loader: %d\n",
765 error
= goodix_configure_dev(ts
);
773 static int goodix_ts_remove(struct i2c_client
*client
)
775 struct goodix_ts_data
*ts
= i2c_get_clientdata(client
);
777 if (ts
->gpiod_int
&& ts
->gpiod_rst
)
778 wait_for_completion(&ts
->firmware_loading_complete
);
783 static int __maybe_unused
goodix_suspend(struct device
*dev
)
785 struct i2c_client
*client
= to_i2c_client(dev
);
786 struct goodix_ts_data
*ts
= i2c_get_clientdata(client
);
789 /* We need gpio pins to suspend/resume */
790 if (!ts
->gpiod_int
|| !ts
->gpiod_rst
)
793 wait_for_completion(&ts
->firmware_loading_complete
);
795 /* Free IRQ as IRQ pin is used as output in the suspend sequence */
798 /* Output LOW on the INT pin for 5 ms */
799 error
= gpiod_direction_output(ts
->gpiod_int
, 0);
801 goodix_request_irq(ts
);
805 usleep_range(5000, 6000);
807 error
= goodix_i2c_write_u8(ts
->client
, GOODIX_REG_COMMAND
,
808 GOODIX_CMD_SCREEN_OFF
);
810 dev_err(&ts
->client
->dev
, "Screen off command failed\n");
811 gpiod_direction_input(ts
->gpiod_int
);
812 goodix_request_irq(ts
);
817 * The datasheet specifies that the interval between sending screen-off
818 * command and wake-up should be longer than 58 ms. To avoid waking up
819 * sooner, delay 58ms here.
825 static int __maybe_unused
goodix_resume(struct device
*dev
)
827 struct i2c_client
*client
= to_i2c_client(dev
);
828 struct goodix_ts_data
*ts
= i2c_get_clientdata(client
);
831 if (!ts
->gpiod_int
|| !ts
->gpiod_rst
)
835 * Exit sleep mode by outputting HIGH level to INT pin
838 error
= gpiod_direction_output(ts
->gpiod_int
, 1);
842 usleep_range(2000, 5000);
844 error
= goodix_int_sync(ts
);
848 error
= goodix_request_irq(ts
);
855 static SIMPLE_DEV_PM_OPS(goodix_pm_ops
, goodix_suspend
, goodix_resume
);
857 static const struct i2c_device_id goodix_ts_id
[] = {
858 { "GDIX1001:00", 0 },
861 MODULE_DEVICE_TABLE(i2c
, goodix_ts_id
);
864 static const struct acpi_device_id goodix_acpi_match
[] = {
868 MODULE_DEVICE_TABLE(acpi
, goodix_acpi_match
);
872 static const struct of_device_id goodix_of_match
[] = {
873 { .compatible
= "goodix,gt911" },
874 { .compatible
= "goodix,gt9110" },
875 { .compatible
= "goodix,gt912" },
876 { .compatible
= "goodix,gt927" },
877 { .compatible
= "goodix,gt9271" },
878 { .compatible
= "goodix,gt928" },
879 { .compatible
= "goodix,gt967" },
882 MODULE_DEVICE_TABLE(of
, goodix_of_match
);
885 static struct i2c_driver goodix_ts_driver
= {
886 .probe
= goodix_ts_probe
,
887 .remove
= goodix_ts_remove
,
888 .id_table
= goodix_ts_id
,
891 .acpi_match_table
= ACPI_PTR(goodix_acpi_match
),
892 .of_match_table
= of_match_ptr(goodix_of_match
),
893 .pm
= &goodix_pm_ops
,
896 module_i2c_driver(goodix_ts_driver
);
898 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
899 MODULE_AUTHOR("Bastien Nocera <hadess@hadess.net>");
900 MODULE_DESCRIPTION("Goodix touchscreen driver");
901 MODULE_LICENSE("GPL v2");