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39e4e75a9f
Up to now tsc200x_remove() returns zero unconditionally. Make it return void instead which makes it easier to see in the callers that there is no error to handle. Also the return value of i2c and spi remove callbacks is ignored anyway. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20211012153945.2651412-7-u.kleine-koenig@pengutronix.de Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
// 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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tsc200x_remove(&i2c->dev);
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return 0;
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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 <mwelling@ieee.org>");
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MODULE_DESCRIPTION("TSC2004 Touchscreen Driver");
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MODULE_LICENSE("GPL");
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