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79 lines
1.8 KiB
79 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* TSC2004 touchscreen driver |
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* |
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* Copyright (C) 2015 QWERTY Embedded Design |
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* Copyright (C) 2015 EMAC Inc. |
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*/ |
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#include <linux/module.h> |
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#include <linux/input.h> |
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#include <linux/of.h> |
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#include <linux/i2c.h> |
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#include <linux/regmap.h> |
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#include "tsc200x-core.h" |
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static const struct input_id tsc2004_input_id = { |
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.bustype = BUS_I2C, |
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.product = 2004, |
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}; |
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static int tsc2004_cmd(struct device *dev, u8 cmd) |
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{ |
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u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; |
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s32 data; |
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struct i2c_client *i2c = to_i2c_client(dev); |
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data = i2c_smbus_write_byte(i2c, tx); |
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if (data < 0) { |
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dev_err(dev, "%s: failed, command: %x i2c error: %d\n", |
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__func__, cmd, data); |
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return data; |
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} |
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return 0; |
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} |
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static int tsc2004_probe(struct i2c_client *i2c, |
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const struct i2c_device_id *id) |
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{ |
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return tsc200x_probe(&i2c->dev, i2c->irq, &tsc2004_input_id, |
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devm_regmap_init_i2c(i2c, &tsc200x_regmap_config), |
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tsc2004_cmd); |
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} |
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static int tsc2004_remove(struct i2c_client *i2c) |
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{ |
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return tsc200x_remove(&i2c->dev); |
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} |
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static const struct i2c_device_id tsc2004_idtable[] = { |
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{ "tsc2004", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, tsc2004_idtable); |
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#ifdef CONFIG_OF |
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static const struct of_device_id tsc2004_of_match[] = { |
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{ .compatible = "ti,tsc2004" }, |
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{ /* sentinel */ } |
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}; |
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MODULE_DEVICE_TABLE(of, tsc2004_of_match); |
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#endif |
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static struct i2c_driver tsc2004_driver = { |
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.driver = { |
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.name = "tsc2004", |
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.of_match_table = of_match_ptr(tsc2004_of_match), |
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.pm = &tsc200x_pm_ops, |
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}, |
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.id_table = tsc2004_idtable, |
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.probe = tsc2004_probe, |
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.remove = tsc2004_remove, |
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}; |
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module_i2c_driver(tsc2004_driver); |
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MODULE_AUTHOR("Michael Welling <[email protected]>"); |
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MODULE_DESCRIPTION("TSC2004 Touchscreen Driver"); |
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MODULE_LICENSE("GPL");
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