projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| fba09e81 NA |
1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* | |
| 3 | * Goodix Berlin Touchscreen Driver | |
| 4 | * | |
| 5 | * Copyright (C) 2020 - 2021 Goodix, Inc. | |
| 6 | * Copyright (C) 2023 Linaro Ltd. | |
| 7 | * | |
| 8 | * Based on goodix_ts_berlin driver. | |
| 9 | */ | |
| 10 | #include <linux/i2c.h> | |
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/module.h> | |
| 13 | #include <linux/regmap.h> | |
| 14 | #include <linux/input.h> | |
| 15 | ||
| 16 | #include "goodix_berlin.h" | |
| 17 | ||
| 18 | #define I2C_MAX_TRANSFER_SIZE 256 | |
| 19 | ||
| 20 | static const struct regmap_config goodix_berlin_i2c_regmap_conf = { | |
| 21 | .reg_bits = 32, | |
| 22 | .val_bits = 8, | |
| 23 | .max_raw_read = I2C_MAX_TRANSFER_SIZE, | |
| 24 | .max_raw_write = I2C_MAX_TRANSFER_SIZE, | |
| 25 | }; | |
| 26 | ||
| 27 | /* vendor & product left unassigned here, should probably be updated from fw info */ | |
| 28 | static const struct input_id goodix_berlin_i2c_input_id = { | |
| 29 | .bustype = BUS_I2C, | |
| 30 | }; | |
| 31 | ||
| 32 | static int goodix_berlin_i2c_probe(struct i2c_client *client) | |
| 33 | { | |
| 34 | struct regmap *regmap; | |
| 35 | int error; | |
| 36 | ||
| 37 | regmap = devm_regmap_init_i2c(client, &goodix_berlin_i2c_regmap_conf); | |
| 38 | if (IS_ERR(regmap)) | |
| 39 | return PTR_ERR(regmap); | |
| 40 | ||
| 41 | error = goodix_berlin_probe(&client->dev, client->irq, | |
| 42 | &goodix_berlin_i2c_input_id, regmap); | |
| 43 | if (error) | |
| 44 | return error; | |
| 45 | ||
| 46 | return 0; | |
| 47 | } | |
| 48 | ||
| 49 | static const struct i2c_device_id goodix_berlin_i2c_id[] = { | |
| 5852f2af | 50 | { "gt9916" }, |
| fba09e81 NA |
51 | { } |
| 52 | }; | |
| 53 | ||
| 54 | MODULE_DEVICE_TABLE(i2c, goodix_berlin_i2c_id); | |
| 55 | ||
| 56 | static const struct of_device_id goodix_berlin_i2c_of_match[] = { | |
| 57 | { .compatible = "goodix,gt9916", }, | |
| 58 | { } | |
| 59 | }; | |
| 60 | MODULE_DEVICE_TABLE(of, goodix_berlin_i2c_of_match); | |
| 61 | ||
| 62 | static struct i2c_driver goodix_berlin_i2c_driver = { | |
| 63 | .driver = { | |
| 64 | .name = "goodix-berlin-i2c", | |
| 65 | .of_match_table = goodix_berlin_i2c_of_match, | |
| 66 | .pm = pm_sleep_ptr(&goodix_berlin_pm_ops), | |
| 67 | }, | |
| 68 | .probe = goodix_berlin_i2c_probe, | |
| 69 | .id_table = goodix_berlin_i2c_id, | |
| 70 | }; | |
| 71 | module_i2c_driver(goodix_berlin_i2c_driver); | |
| 72 | ||
| 73 | MODULE_LICENSE("GPL"); | |
| 74 | MODULE_DESCRIPTION("Goodix Berlin I2C Touchscreen driver"); | |
| 75 | MODULE_AUTHOR("Neil Armstrong <neil.armstrong@linaro.org>"); |