File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c
new file mode 100644
index 0000000..f2c5f0e
--- /dev/null
+++ b/drivers/input/touchscreen/tsc2005.c
@@ -0,0 +1,93 @@
+/*
+ * TSC2005 touchscreen driver
+ *
+ * Copyright (C) 2006-2010 Nokia Corporation
+ * Copyright (C) 2015 QWERTY Embedded Design
+ * Copyright (C) 2015 EMAC Inc.
+ *
+ * Based on original tsc2005.c by Lauri Leukkunen <lauri.leukkunen@nokia.com>
+ *
+ * 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/spi/spi.h>
+#include <linux/regmap.h>
+#include "tsc200x-core.h"
+
+static const struct input_id tsc2005_input_id = {
+ .bustype = BUS_SPI,
+ .product = 2005,
+};
+
+static int tsc2005_cmd(struct device *dev, u8 cmd)
+{
+ u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd;
+ struct spi_transfer xfer = {
+ .tx_buf = &tx,
+ .len = 1,
+ .bits_per_word = 8,
+ };
+ struct spi_message msg;
+ struct spi_device *spi = to_spi_device(dev);
+ int error;
+
+ spi_message_init(&msg);
+ spi_message_add_tail(&xfer, &msg);
+
+ error = spi_sync(spi, &msg);
+ if (error) {
+ dev_err(dev, "%s: failed, command: %x, spi error: %d\n",
+ __func__, cmd, error);
+ return error;
+ }
+
+ return 0;
+}
+
+static int tsc2005_probe(struct spi_device *spi)
+{
+ int error;
+
+ spi->mode = SPI_MODE_0;
+ spi->bits_per_word = 8;
+ if (!spi->max_speed_hz)
+ spi->max_speed_hz = TSC2005_SPI_MAX_SPEED_HZ;
+
+ error = spi_setup(spi);
+ if (error)
+ return error;
+
+ return tsc200x_probe(&spi->dev, spi->irq, &tsc2005_input_id,
+ devm_regmap_init_spi(spi, &tsc200x_regmap_config),
+ tsc2005_cmd);
+}
+
+static int tsc2005_remove(struct spi_device *spi)
+{
+ return tsc200x_remove(&spi->dev);
+}
+
+static struct spi_driver tsc2005_driver = {
+ .driver = {
+ .name = "tsc2005",
+ .pm = &tsc200x_pm_ops,
+ },
+ .probe = tsc2005_probe,
+ .remove = tsc2005_remove,
+};
+module_spi_driver(tsc2005_driver);
+
+MODULE_AUTHOR("Michael Welling <mwelling@ieee.org>");
+MODULE_DESCRIPTION("TSC2005 Touchscreen Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("spi:tsc2005");