mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 01:10:04 +00:00
356bbabade
Up to now stmpe_remove() returns zero unconditionally. Make it return void instead which makes it easier to see in the callers that there is no error to handle. Also the return value of i2c and spi remove callbacks is ignored anyway. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211012153945.2651412-10-u.kleine-koenig@pengutronix.de
143 lines
3.6 KiB
C
143 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* ST Microelectronics MFD: stmpe's i2c client specific driver
|
|
*
|
|
* Copyright (C) ST-Ericsson SA 2010
|
|
* Copyright (C) ST Microelectronics SA 2011
|
|
*
|
|
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
|
|
* Author: Viresh Kumar <vireshk@kernel.org> for ST Microelectronics
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/of_device.h>
|
|
#include "stmpe.h"
|
|
|
|
static int i2c_reg_read(struct stmpe *stmpe, u8 reg)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_read_byte_data(i2c, reg);
|
|
}
|
|
|
|
static int i2c_reg_write(struct stmpe *stmpe, u8 reg, u8 val)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_write_byte_data(i2c, reg, val);
|
|
}
|
|
|
|
static int i2c_block_read(struct stmpe *stmpe, u8 reg, u8 length, u8 *values)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_read_i2c_block_data(i2c, reg, length, values);
|
|
}
|
|
|
|
static int i2c_block_write(struct stmpe *stmpe, u8 reg, u8 length,
|
|
const u8 *values)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_write_i2c_block_data(i2c, reg, length, values);
|
|
}
|
|
|
|
static struct stmpe_client_info i2c_ci = {
|
|
.read_byte = i2c_reg_read,
|
|
.write_byte = i2c_reg_write,
|
|
.read_block = i2c_block_read,
|
|
.write_block = i2c_block_write,
|
|
};
|
|
|
|
static const struct of_device_id stmpe_of_match[] = {
|
|
{ .compatible = "st,stmpe610", .data = (void *)STMPE610, },
|
|
{ .compatible = "st,stmpe801", .data = (void *)STMPE801, },
|
|
{ .compatible = "st,stmpe811", .data = (void *)STMPE811, },
|
|
{ .compatible = "st,stmpe1600", .data = (void *)STMPE1600, },
|
|
{ .compatible = "st,stmpe1601", .data = (void *)STMPE1601, },
|
|
{ .compatible = "st,stmpe1801", .data = (void *)STMPE1801, },
|
|
{ .compatible = "st,stmpe2401", .data = (void *)STMPE2401, },
|
|
{ .compatible = "st,stmpe2403", .data = (void *)STMPE2403, },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, stmpe_of_match);
|
|
|
|
static int
|
|
stmpe_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
|
|
{
|
|
enum stmpe_partnum partnum;
|
|
const struct of_device_id *of_id;
|
|
|
|
i2c_ci.data = (void *)id;
|
|
i2c_ci.irq = i2c->irq;
|
|
i2c_ci.client = i2c;
|
|
i2c_ci.dev = &i2c->dev;
|
|
|
|
of_id = of_match_device(stmpe_of_match, &i2c->dev);
|
|
if (!of_id) {
|
|
/*
|
|
* This happens when the I2C ID matches the node name
|
|
* but no real compatible string has been given.
|
|
*/
|
|
dev_info(&i2c->dev, "matching on node name, compatible is preferred\n");
|
|
partnum = id->driver_data;
|
|
} else
|
|
partnum = (enum stmpe_partnum)of_id->data;
|
|
|
|
return stmpe_probe(&i2c_ci, partnum);
|
|
}
|
|
|
|
static int stmpe_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct stmpe *stmpe = dev_get_drvdata(&i2c->dev);
|
|
|
|
stmpe_remove(stmpe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id stmpe_i2c_id[] = {
|
|
{ "stmpe610", STMPE610 },
|
|
{ "stmpe801", STMPE801 },
|
|
{ "stmpe811", STMPE811 },
|
|
{ "stmpe1600", STMPE1600 },
|
|
{ "stmpe1601", STMPE1601 },
|
|
{ "stmpe1801", STMPE1801 },
|
|
{ "stmpe2401", STMPE2401 },
|
|
{ "stmpe2403", STMPE2403 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, stmpe_i2c_id);
|
|
|
|
static struct i2c_driver stmpe_i2c_driver = {
|
|
.driver = {
|
|
.name = "stmpe-i2c",
|
|
#ifdef CONFIG_PM
|
|
.pm = &stmpe_dev_pm_ops,
|
|
#endif
|
|
.of_match_table = stmpe_of_match,
|
|
},
|
|
.probe = stmpe_i2c_probe,
|
|
.remove = stmpe_i2c_remove,
|
|
.id_table = stmpe_i2c_id,
|
|
};
|
|
|
|
static int __init stmpe_init(void)
|
|
{
|
|
return i2c_add_driver(&stmpe_i2c_driver);
|
|
}
|
|
subsys_initcall(stmpe_init);
|
|
|
|
static void __exit stmpe_exit(void)
|
|
{
|
|
i2c_del_driver(&stmpe_i2c_driver);
|
|
}
|
|
module_exit(stmpe_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("STMPE MFD I2C Interface Driver");
|
|
MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>");
|