Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * AD7879-1/AD7889-1 touchscreen (I2C bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/input.h>	/* BUS_I2C */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/pm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "ad7879.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define AD7879_DEVID		0x79	/* AD7879-1/AD7889-1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static const struct regmap_config ad7879_i2c_regmap_config = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	.reg_bits = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	.val_bits = 16,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	.max_register = 15,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static int ad7879_i2c_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 				      const struct i2c_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	struct regmap *regmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	if (!i2c_check_functionality(client->adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 				     I2C_FUNC_SMBUS_WORD_DATA)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		dev_err(&client->dev, "SMBUS Word Data not Supported\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	regmap = devm_regmap_init_i2c(client, &ad7879_i2c_regmap_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	if (IS_ERR(regmap))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		return PTR_ERR(regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	return ad7879_probe(&client->dev, regmap, client->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 			    BUS_I2C, AD7879_DEVID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static const struct i2c_device_id ad7879_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	{ "ad7879", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	{ "ad7889", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) MODULE_DEVICE_TABLE(i2c, ad7879_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static const struct of_device_id ad7879_i2c_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	{ .compatible = "adi,ad7879-1", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MODULE_DEVICE_TABLE(of, ad7879_i2c_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static struct i2c_driver ad7879_i2c_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 		.name	= "ad7879",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		.pm	= &ad7879_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		.of_match_table = of_match_ptr(ad7879_i2c_dt_ids),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	.probe		= ad7879_i2c_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 	.id_table	= ad7879_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) module_i2c_driver(ad7879_i2c_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) MODULE_DESCRIPTION("AD7879(-1) touchscreen I2C bus driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) MODULE_LICENSE("GPL");