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- /*
- * 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");
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