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: Ferruh Yigit <fery@cypress.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/cyttsp4_i2c.c b/drivers/input/touchscreen/cyttsp4_i2c.c
new file mode 100644
index 0000000..8e2012c
--- /dev/null
+++ b/drivers/input/touchscreen/cyttsp4_i2c.c
@@ -0,0 +1,90 @@
+/*
+ * 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");
