1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * TSC2005 touchscreen driver
5 * Copyright (C) 2006-2010 Nokia Corporation
6 * Copyright (C) 2015 QWERTY Embedded Design
7 * Copyright (C) 2015 EMAC Inc.
9 * Based on original tsc2005.c by Lauri Leukkunen <lauri.leukkunen@nokia.com>
12 #include <linux/input.h>
13 #include <linux/module.h>
15 #include <linux/spi/spi.h>
16 #include <linux/regmap.h>
17 #include "tsc200x-core.h"
19 static const struct input_id tsc2005_input_id = {
24 static int tsc2005_cmd(struct device *dev, u8 cmd)
26 u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd;
27 struct spi_transfer xfer = {
32 struct spi_message msg;
33 struct spi_device *spi = to_spi_device(dev);
36 spi_message_init(&msg);
37 spi_message_add_tail(&xfer, &msg);
39 error = spi_sync(spi, &msg);
41 dev_err(dev, "%s: failed, command: %x, spi error: %d\n",
42 __func__, cmd, error);
49 static int tsc2005_probe(struct spi_device *spi)
53 spi->mode = SPI_MODE_0;
54 spi->bits_per_word = 8;
55 if (!spi->max_speed_hz)
56 spi->max_speed_hz = TSC2005_SPI_MAX_SPEED_HZ;
58 error = spi_setup(spi);
62 return tsc200x_probe(&spi->dev, spi->irq, &tsc2005_input_id,
63 devm_regmap_init_spi(spi, &tsc200x_regmap_config),
68 static const struct of_device_id tsc2005_of_match[] = {
69 { .compatible = "ti,tsc2005" },
72 MODULE_DEVICE_TABLE(of, tsc2005_of_match);
75 static struct spi_driver tsc2005_driver = {
78 .dev_groups = tsc200x_groups,
79 .of_match_table = of_match_ptr(tsc2005_of_match),
80 .pm = pm_sleep_ptr(&tsc200x_pm_ops),
82 .probe = tsc2005_probe,
84 module_spi_driver(tsc2005_driver);
86 MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>");
87 MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
88 MODULE_LICENSE("GPL");
89 MODULE_ALIAS("spi:tsc2005");