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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/input/touchscreen/cyttsp_i2c.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/input/touchscreen/cyttsp_i2c.c')
-rw-r--r-- | drivers/input/touchscreen/cyttsp_i2c.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/cyttsp_i2c.c b/drivers/input/touchscreen/cyttsp_i2c.c new file mode 100644 index 000000000..4c8473d32 --- /dev/null +++ b/drivers/input/touchscreen/cyttsp_i2c.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * cyttsp_i2c.c + * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver. + * For use with Cypress Txx3xx parts. + * Supported parts include: + * CY8CTST341 + * CY8CTMA340 + * + * Copyright (C) 2009, 2010, 2011 Cypress Semiconductor, Inc. + * Copyright (C) 2012 Javier Martinez Canillas <javier@dowhile0.org> + * + * Contact Cypress Semiconductor at www.cypress.com <ttdrivers@cypress.com> + */ + +#include "cyttsp_core.h" + +#include <linux/i2c.h> +#include <linux/input.h> + +#define CY_I2C_NAME "cyttsp-i2c" + +#define CY_I2C_DATA_SIZE 128 + +static const struct cyttsp_bus_ops cyttsp_i2c_bus_ops = { + .bustype = BUS_I2C, + .write = cyttsp_i2c_write_block_data, + .read = cyttsp_i2c_read_block_data, +}; + +static int cyttsp_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct cyttsp *ts; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { + dev_err(&client->dev, "I2C functionality not Supported\n"); + return -EIO; + } + + ts = cyttsp_probe(&cyttsp_i2c_bus_ops, &client->dev, client->irq, + CY_I2C_DATA_SIZE); + + if (IS_ERR(ts)) + return PTR_ERR(ts); + + i2c_set_clientdata(client, ts); + return 0; +} + +static const struct i2c_device_id cyttsp_i2c_id[] = { + { CY_I2C_NAME, 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, cyttsp_i2c_id); + +static const struct of_device_id cyttsp_of_i2c_match[] = { + { .compatible = "cypress,cy8ctma340", }, + { .compatible = "cypress,cy8ctst341", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, cyttsp_of_i2c_match); + +static struct i2c_driver cyttsp_i2c_driver = { + .driver = { + .name = CY_I2C_NAME, + .pm = &cyttsp_pm_ops, + .of_match_table = cyttsp_of_i2c_match, + }, + .probe = cyttsp_i2c_probe, + .id_table = cyttsp_i2c_id, +}; + +module_i2c_driver(cyttsp_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver"); +MODULE_AUTHOR("Cypress"); |