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94 lines
2.1 KiB
94 lines
2.1 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* TSC2005 touchscreen driver |
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* |
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* Copyright (C) 2006-2010 Nokia Corporation |
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* Copyright (C) 2015 QWERTY Embedded Design |
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* Copyright (C) 2015 EMAC Inc. |
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* |
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* Based on original tsc2005.c by Lauri Leukkunen <[email protected]> |
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*/ |
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#include <linux/input.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/spi/spi.h> |
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#include <linux/regmap.h> |
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#include "tsc200x-core.h" |
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static const struct input_id tsc2005_input_id = { |
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.bustype = BUS_SPI, |
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.product = 2005, |
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}; |
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static int tsc2005_cmd(struct device *dev, u8 cmd) |
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{ |
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u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; |
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struct spi_transfer xfer = { |
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.tx_buf = &tx, |
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.len = 1, |
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.bits_per_word = 8, |
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}; |
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struct spi_message msg; |
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struct spi_device *spi = to_spi_device(dev); |
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int error; |
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spi_message_init(&msg); |
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spi_message_add_tail(&xfer, &msg); |
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error = spi_sync(spi, &msg); |
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if (error) { |
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dev_err(dev, "%s: failed, command: %x, spi error: %d\n", |
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__func__, cmd, error); |
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return error; |
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} |
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return 0; |
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} |
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static int tsc2005_probe(struct spi_device *spi) |
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{ |
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int error; |
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spi->mode = SPI_MODE_0; |
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spi->bits_per_word = 8; |
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if (!spi->max_speed_hz) |
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spi->max_speed_hz = TSC2005_SPI_MAX_SPEED_HZ; |
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error = spi_setup(spi); |
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if (error) |
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return error; |
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return tsc200x_probe(&spi->dev, spi->irq, &tsc2005_input_id, |
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devm_regmap_init_spi(spi, &tsc200x_regmap_config), |
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tsc2005_cmd); |
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} |
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static int tsc2005_remove(struct spi_device *spi) |
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{ |
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return tsc200x_remove(&spi->dev); |
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} |
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#ifdef CONFIG_OF |
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static const struct of_device_id tsc2005_of_match[] = { |
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{ .compatible = "ti,tsc2005" }, |
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{ /* sentinel */ } |
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}; |
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MODULE_DEVICE_TABLE(of, tsc2005_of_match); |
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#endif |
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static struct spi_driver tsc2005_driver = { |
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.driver = { |
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.name = "tsc2005", |
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.of_match_table = of_match_ptr(tsc2005_of_match), |
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.pm = &tsc200x_pm_ops, |
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}, |
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.probe = tsc2005_probe, |
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.remove = tsc2005_remove, |
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}; |
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module_spi_driver(tsc2005_driver); |
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MODULE_AUTHOR("Michael Welling <[email protected]>"); |
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MODULE_DESCRIPTION("TSC2005 Touchscreen Driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("spi:tsc2005");
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