projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| a748941c MW |
1 | /* |
| 2 | * TSC2004 touchscreen driver | |
| 3 | * | |
| 4 | * Copyright (C) 2015 QWERTY Embedded Design | |
| 5 | * Copyright (C) 2015 EMAC Inc. | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | * | |
| 12 | * This program is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | * GNU General Public License for more details. | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/module.h> | |
| 19 | #include <linux/input.h> | |
| 20 | #include <linux/of.h> | |
| 21 | #include <linux/i2c.h> | |
| 22 | #include <linux/regmap.h> | |
| 23 | #include "tsc200x-core.h" | |
| 24 | ||
| e9003c9c MW |
25 | static const struct input_id tsc2004_input_id = { |
| 26 | .bustype = BUS_I2C, | |
| 27 | .product = 2004, | |
| 28 | }; | |
| 29 | ||
| a748941c MW |
30 | static int tsc2004_cmd(struct device *dev, u8 cmd) |
| 31 | { | |
| 32 | u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; | |
| 33 | s32 data; | |
| 34 | struct i2c_client *i2c = to_i2c_client(dev); | |
| 35 | ||
| 36 | data = i2c_smbus_write_byte(i2c, tx); | |
| 37 | if (data < 0) { | |
| 38 | dev_err(dev, "%s: failed, command: %x i2c error: %d\n", | |
| 39 | __func__, cmd, data); | |
| 40 | return data; | |
| 41 | } | |
| 42 | ||
| 43 | return 0; | |
| 44 | } | |
| 45 | ||
| 46 | static int tsc2004_probe(struct i2c_client *i2c, | |
| 47 | const struct i2c_device_id *id) | |
| 48 | ||
| 49 | { | |
| e9003c9c | 50 | return tsc200x_probe(&i2c->dev, i2c->irq, &tsc2004_input_id, |
| a748941c MW |
51 | devm_regmap_init_i2c(i2c, &tsc200x_regmap_config), |
| 52 | tsc2004_cmd); | |
| 53 | } | |
| 54 | ||
| 55 | static int tsc2004_remove(struct i2c_client *i2c) | |
| 56 | { | |
| 57 | return tsc200x_remove(&i2c->dev); | |
| 58 | } | |
| 59 | ||
| 60 | static const struct i2c_device_id tsc2004_idtable[] = { | |
| 61 | { "tsc2004", 0 }, | |
| 62 | { } | |
| 63 | }; | |
| 64 | MODULE_DEVICE_TABLE(i2c, tsc2004_idtable); | |
| 65 | ||
| 66 | #ifdef CONFIG_OF | |
| 67 | static const struct of_device_id tsc2004_of_match[] = { | |
| 68 | { .compatible = "ti,tsc2004" }, | |
| 69 | { /* sentinel */ } | |
| 70 | }; | |
| 71 | MODULE_DEVICE_TABLE(of, tsc2004_of_match); | |
| 72 | #endif | |
| 73 | ||
| 74 | static struct i2c_driver tsc2004_driver = { | |
| 75 | .driver = { | |
| 76 | .name = "tsc2004", | |
| 77 | .of_match_table = of_match_ptr(tsc2004_of_match), | |
| 78 | .pm = &tsc200x_pm_ops, | |
| 79 | }, | |
| 80 | .id_table = tsc2004_idtable, | |
| 81 | .probe = tsc2004_probe, | |
| 82 | .remove = tsc2004_remove, | |
| 83 | }; | |
| 84 | module_i2c_driver(tsc2004_driver); | |
| 85 | ||
| 86 | MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>"); | |
| 87 | MODULE_DESCRIPTION("TSC2004 Touchscreen Driver"); | |
| 88 | MODULE_LICENSE("GPL"); |