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author | Michael Welling <mwelling@ieee.org> | 2015-11-02 22:54:23 -0800 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-11-03 14:54:22 -0800 |
commit | a748941c95d2cd8f1a23e4e716b3178179c7fdbe (patch) | |
tree | eeee688fb74cf193a4223a27d1d01fdd8b998c9f /drivers/input/touchscreen | |
parent | ef3b98c2c3fc6a73ec1e98a463c38329e66c6b95 (diff) | |
download | op-kernel-dev-a748941c95d2cd8f1a23e4e716b3178179c7fdbe.zip op-kernel-dev-a748941c95d2cd8f1a23e4e716b3178179c7fdbe.tar.gz |
Input: tsc2004 - add support for tsc2004
This adds support for the i2c based tsc2004 touchscreen controller.
Signed-off-by: Michael Welling <mwelling@ieee.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r-- | drivers/input/touchscreen/Kconfig | 13 | ||||
-rw-r--r-- | drivers/input/touchscreen/Makefile | 1 | ||||
-rw-r--r-- | drivers/input/touchscreen/tsc2004.c | 83 |
3 files changed, 97 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 6b2de53..2ccc522 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -942,6 +942,19 @@ config TOUCHSCREEN_TSC_SERIO config TOUCHSCREEN_TSC200X_CORE tristate +config TOUCHSCREEN_TSC2004 + tristate "TSC2004 based touchscreens" + depends on I2C + select REGMAP_I2C + select TOUCHSCREEN_TSC200X_CORE + help + Say Y here if you have a TSC2004 based touchscreen. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called tsc2004. + config TOUCHSCREEN_TSC2005 tristate "TSC2005 based touchscreens" depends on SPI_MASTER diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 03179f2..cbaa6ab 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o obj-$(CONFIG_TOUCHSCREEN_TSC_SERIO) += tsc40.o obj-$(CONFIG_TOUCHSCREEN_TSC200X_CORE) += tsc200x-core.o +obj-$(CONFIG_TOUCHSCREEN_TSC2004) += tsc2004.o obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o diff --git a/drivers/input/touchscreen/tsc2004.c b/drivers/input/touchscreen/tsc2004.c new file mode 100644 index 0000000..7295c19 --- /dev/null +++ b/drivers/input/touchscreen/tsc2004.c @@ -0,0 +1,83 @@ +/* + * 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 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, BUS_I2C, + 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"); |