mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 09:46:41 +07:00
c5c18a06af
Use managed resource functions devm_request_threaded_irq, devm_inpute_allocate_device and devm_kzalloc to simplify error handling. Also, remove use of input_unregister_device as input_register_device itself handles it and works as resource managed function. To be compatible with the change, various gotos are replaced with direct returns, and unneeded labels are dropped. With these changes remove ad714x_remove and corresponding calls of it as they are now redundant. Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
112 lines
2.6 KiB
C
112 lines
2.6 KiB
C
/*
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* AD714X CapTouch Programmable Controller driver (I2C bus)
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*
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* Copyright 2009-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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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/pm.h>
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#include "ad714x.h"
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static int __maybe_unused ad714x_i2c_suspend(struct device *dev)
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{
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return ad714x_disable(i2c_get_clientdata(to_i2c_client(dev)));
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}
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static int __maybe_unused ad714x_i2c_resume(struct device *dev)
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{
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return ad714x_enable(i2c_get_clientdata(to_i2c_client(dev)));
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}
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static SIMPLE_DEV_PM_OPS(ad714x_i2c_pm, ad714x_i2c_suspend, ad714x_i2c_resume);
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static int ad714x_i2c_write(struct ad714x_chip *chip,
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unsigned short reg, unsigned short data)
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{
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struct i2c_client *client = to_i2c_client(chip->dev);
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int error;
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chip->xfer_buf[0] = cpu_to_be16(reg);
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chip->xfer_buf[1] = cpu_to_be16(data);
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error = i2c_master_send(client, (u8 *)chip->xfer_buf,
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2 * sizeof(*chip->xfer_buf));
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if (unlikely(error < 0)) {
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dev_err(&client->dev, "I2C write error: %d\n", 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 ad714x_i2c_read(struct ad714x_chip *chip,
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unsigned short reg, unsigned short *data, size_t len)
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{
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struct i2c_client *client = to_i2c_client(chip->dev);
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int i;
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int error;
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chip->xfer_buf[0] = cpu_to_be16(reg);
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error = i2c_master_send(client, (u8 *)chip->xfer_buf,
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sizeof(*chip->xfer_buf));
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if (error >= 0)
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error = i2c_master_recv(client, (u8 *)chip->xfer_buf,
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len * sizeof(*chip->xfer_buf));
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if (unlikely(error < 0)) {
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dev_err(&client->dev, "I2C read error: %d\n", error);
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return error;
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}
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for (i = 0; i < len; i++)
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data[i] = be16_to_cpu(chip->xfer_buf[i]);
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return 0;
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}
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static int ad714x_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 ad714x_chip *chip;
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chip = ad714x_probe(&client->dev, BUS_I2C, client->irq,
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ad714x_i2c_read, ad714x_i2c_write);
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if (IS_ERR(chip))
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return PTR_ERR(chip);
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i2c_set_clientdata(client, chip);
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return 0;
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}
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static const struct i2c_device_id ad714x_id[] = {
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{ "ad7142_captouch", 0 },
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{ "ad7143_captouch", 0 },
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{ "ad7147_captouch", 0 },
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{ "ad7147a_captouch", 0 },
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{ "ad7148_captouch", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, ad714x_id);
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static struct i2c_driver ad714x_i2c_driver = {
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.driver = {
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.name = "ad714x_captouch",
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.pm = &ad714x_i2c_pm,
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},
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.probe = ad714x_i2c_probe,
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.id_table = ad714x_id,
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};
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module_i2c_driver(ad714x_i2c_driver);
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MODULE_DESCRIPTION("Analog Devices AD714X Capacitance Touch Sensor I2C Bus Driver");
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MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
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MODULE_LICENSE("GPL");
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