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74 lines
1.7 KiB
74 lines
1.7 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* AD7879-1/AD7889-1 touchscreen (I2C bus) |
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* |
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* Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. |
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*/ |
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#include <linux/input.h> /* BUS_I2C */ |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/of.h> |
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#include <linux/pm.h> |
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#include <linux/regmap.h> |
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#include "ad7879.h" |
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#define AD7879_DEVID 0x79 /* AD7879-1/AD7889-1 */ |
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static const struct regmap_config ad7879_i2c_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 16, |
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.max_register = 15, |
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}; |
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static int ad7879_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 regmap *regmap; |
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if (!i2c_check_functionality(client->adapter, |
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I2C_FUNC_SMBUS_WORD_DATA)) { |
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dev_err(&client->dev, "SMBUS Word Data not Supported\n"); |
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return -EIO; |
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} |
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regmap = devm_regmap_init_i2c(client, &ad7879_i2c_regmap_config); |
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if (IS_ERR(regmap)) |
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return PTR_ERR(regmap); |
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return ad7879_probe(&client->dev, regmap, client->irq, |
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BUS_I2C, AD7879_DEVID); |
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} |
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static const struct i2c_device_id ad7879_id[] = { |
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{ "ad7879", 0 }, |
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{ "ad7889", 0 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, ad7879_id); |
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#ifdef CONFIG_OF |
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static const struct of_device_id ad7879_i2c_dt_ids[] = { |
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{ .compatible = "adi,ad7879-1", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, ad7879_i2c_dt_ids); |
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#endif |
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static struct i2c_driver ad7879_i2c_driver = { |
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.driver = { |
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.name = "ad7879", |
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.pm = &ad7879_pm_ops, |
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.of_match_table = of_match_ptr(ad7879_i2c_dt_ids), |
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}, |
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.probe = ad7879_i2c_probe, |
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.id_table = ad7879_id, |
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}; |
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module_i2c_driver(ad7879_i2c_driver); |
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MODULE_AUTHOR("Michael Hennerich <[email protected]>"); |
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MODULE_DESCRIPTION("AD7879(-1) touchscreen I2C bus driver"); |
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MODULE_LICENSE("GPL");
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