| /* |
| * TSC2004 touchscreen driver |
| * |
| * Copyright (C) 2015 QWERTY Embedded Design |
| * Copyright (C) 2015 EMAC Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/input.h> |
| #include <linux/of.h> |
| #include <linux/i2c.h> |
| #include <linux/regmap.h> |
| #include "tsc200x-core.h" |
| |
| static const struct input_id tsc2004_input_id = { |
| .bustype = BUS_I2C, |
| .product = 2004, |
| }; |
| |
| static int tsc2004_cmd(struct device *dev, u8 cmd) |
| { |
| u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; |
| s32 data; |
| struct i2c_client *i2c = to_i2c_client(dev); |
| |
| data = i2c_smbus_write_byte(i2c, tx); |
| if (data < 0) { |
| dev_err(dev, "%s: failed, command: %x i2c error: %d\n", |
| __func__, cmd, data); |
| return data; |
| } |
| |
| return 0; |
| } |
| |
| static int tsc2004_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| |
| { |
| return tsc200x_probe(&i2c->dev, i2c->irq, &tsc2004_input_id, |
| devm_regmap_init_i2c(i2c, &tsc200x_regmap_config), |
| tsc2004_cmd); |
| } |
| |
| static int tsc2004_remove(struct i2c_client *i2c) |
| { |
| return tsc200x_remove(&i2c->dev); |
| } |
| |
| static const struct i2c_device_id tsc2004_idtable[] = { |
| { "tsc2004", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, tsc2004_idtable); |
| |
| #ifdef CONFIG_OF |
| static const struct of_device_id tsc2004_of_match[] = { |
| { .compatible = "ti,tsc2004" }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, tsc2004_of_match); |
| #endif |
| |
| static struct i2c_driver tsc2004_driver = { |
| .driver = { |
| .name = "tsc2004", |
| .of_match_table = of_match_ptr(tsc2004_of_match), |
| .pm = &tsc200x_pm_ops, |
| }, |
| .id_table = tsc2004_idtable, |
| .probe = tsc2004_probe, |
| .remove = tsc2004_remove, |
| }; |
| module_i2c_driver(tsc2004_driver); |
| |
| MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>"); |
| MODULE_DESCRIPTION("TSC2004 Touchscreen Driver"); |
| MODULE_LICENSE("GPL"); |