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Commit 4f9e8680 authored by Ferruh Yigit's avatar Ferruh Yigit Committed by Dmitry Torokhov
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Input: cyttsp4 - I2C driver for Cypress TMA4XX touchscreen devices 



Cypress TrueTouch(tm) Standard Product controllers,
Generation4 devices, I2C adapter module.

This driver adds communication support with TTSP controller
using I2C bus.

Signed-off-by: default avatarFerruh Yigit <fery@cypress.com>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: default avatarJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 17fb1563

drivers/input/touchscreen/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -179,6 +179,15 @@ config TOUCHSCREEN_CYTTSP4_CORE 


	  To compile this driver as a module, choose M here.



config TOUCHSCREEN_CYTTSP4_I2C

	tristate "support I2C bus connection"

	depends on TOUCHSCREEN_CYTTSP4_CORE && I2C

	help

	  Say Y here if the touchscreen is connected via I2C bus.



	  To compile this driver as a module, choose M here: the

	  module will be called cyttsp4_i2c.



config TOUCHSCREEN_DA9034

	tristate "Touchscreen support for Dialog Semiconductor DA9034"

	depends on PMIC_DA903X

drivers/input/touchscreen/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o 
obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C)	+= cyttsp_i2c.o cyttsp_i2c_common.o

obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI)	+= cyttsp_spi.o

obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_CORE)	+= cyttsp4_core.o

obj-$(CONFIG_TOUCHSCREEN_CYTTSP4_I2C)	+= cyttsp4_i2c.o cyttsp_i2c_common.o

obj-$(CONFIG_TOUCHSCREEN_DA9034)	+= da9034-ts.o

obj-$(CONFIG_TOUCHSCREEN_DA9052)	+= da9052_tsi.o

obj-$(CONFIG_TOUCHSCREEN_DYNAPRO)	+= dynapro.o

drivers/input/touchscreen/cyttsp4_i2c.c

0 → 100644
+90 −0
Original line number Diff line number Diff line 
/*

 * cyttsp_i2c.c

 * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.

 * For use with Cypress  Txx4xx parts.

 * Supported parts include:

 * TMA4XX

 * TMA1036

 *

 * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.

 * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>

 * Copyright (C) 2013 Cypress Semiconductor

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * version 2, and only version 2, as published by the

 * Free Software Foundation.

 *

 * 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.

 *

 * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>

 *

 */



#include "cyttsp4_core.h"



#include <linux/i2c.h>

#include <linux/input.h>



#define CYTTSP4_I2C_DATA_SIZE	(3 * 256)



static const struct cyttsp4_bus_ops cyttsp4_i2c_bus_ops = {

	.bustype	= BUS_I2C,

	.write		= cyttsp_i2c_write_block_data,

	.read           = cyttsp_i2c_read_block_data,

};



static int cyttsp4_i2c_probe(struct i2c_client *client,

				      const struct i2c_device_id *id)

{

	struct cyttsp4 *ts;



	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {

		dev_err(&client->dev, "I2C functionality not Supported\n");

		return -EIO;

	}



	ts = cyttsp4_probe(&cyttsp4_i2c_bus_ops, &client->dev, client->irq,

			  CYTTSP4_I2C_DATA_SIZE);



	if (IS_ERR(ts))

		return PTR_ERR(ts);



	return 0;

}



static int cyttsp4_i2c_remove(struct i2c_client *client)

{

	struct cyttsp4 *ts = i2c_get_clientdata(client);



	cyttsp4_remove(ts);



	return 0;

}



static const struct i2c_device_id cyttsp4_i2c_id[] = {

	{ CYTTSP4_I2C_NAME, 0 },

	{ }

};

MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id);



static struct i2c_driver cyttsp4_i2c_driver = {

	.driver = {

		.name	= CYTTSP4_I2C_NAME,

		.owner	= THIS_MODULE,

		.pm	= &cyttsp4_pm_ops,

	},

	.probe		= cyttsp4_i2c_probe,

	.remove		= cyttsp4_i2c_remove,

	.id_table	= cyttsp4_i2c_id,

};



module_i2c_driver(cyttsp4_i2c_driver);



MODULE_LICENSE("GPL");

MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");

MODULE_AUTHOR("Cypress");

MODULE_ALIAS("i2c:cyttsp4");