007704c99f
The driver (both SPI and I2C interface) should probe from the compatible strings, cypress,cy8ctma340 etc when using device tree, not as now, where it is probing implicitly from the I2C/SPI node name "cypress,cyttsp-i2c" etc. Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210526230352.1433537-2-linus.walleij@linaro.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
77 lines
1.8 KiB
C
77 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* cyttsp_i2c.c
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* Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver.
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* For use with Cypress Txx3xx parts.
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* Supported parts include:
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* CY8CTST341
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* CY8CTMA340
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*
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* Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc.
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* Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org>
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*
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* Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com>
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*/
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#include "cyttsp_core.h"
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#include <linux/i2c.h>
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#include <linux/input.h>
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#define CY_I2C_DATA_SIZE 128
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static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = {
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.bustype = BUS_I2C,
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.write = cyttsp_i2c_write_block_data,
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.read = cyttsp_i2c_read_block_data,
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};
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static int cyttsp_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct cyttsp *ts;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
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dev_err(&client->dev, "I2C functionality not Supported\n");
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return -EIO;
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}
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ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq,
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CY_I2C_DATA_SIZE);
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if (IS_ERR(ts))
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return PTR_ERR(ts);
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i2c_set_clientdata(client, ts);
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return 0;
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}
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static const struct i2c_device_id cyttsp_i2c_id[] = {
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{ CY_I2C_NAME, 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id);
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static const struct of_device_id cyttsp_of_i2c_match[] = {
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{ .compatible = "cypress,cy8ctma340", },
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{ .compatible = "cypress,cy8ctst341", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, cyttsp_of_i2c_match);
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static struct i2c_driver cyttsp_i2c_driver = {
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.driver = {
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.name = CY_I2C_NAME,
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.pm = &cyttsp_pm_ops,
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.of_match_table = cyttsp_of_i2c_match,
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},
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.probe = cyttsp_i2c_probe,
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.id_table = cyttsp_i2c_id,
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};
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module_i2c_driver(cyttsp_i2c_driver);
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver");
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MODULE_AUTHOR("Cypress");
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