OpenCloudOS-Kernel/drivers/mfd/da9055-i2c.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/* I2C access for DA9055 PMICs.
*
* Copyright(c) 2012 Dialog Semiconductor Ltd.
*
* Author: David Dajun Chen <dchen@diasemi.com>
*/
#include <linux/module.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/mfd/da9055/core.h>
static int da9055_i2c_probe(struct i2c_client *i2c)
{
struct da9055 *da9055;
int ret;
da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
if (!da9055)
return -ENOMEM;
da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
if (IS_ERR(da9055->regmap)) {
ret = PTR_ERR(da9055->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
da9055->dev = &i2c->dev;
da9055->chip_irq = i2c->irq;
i2c_set_clientdata(i2c, da9055);
return da9055_device_init(da9055);
}
i2c: Make remove callback return void The value returned by an i2c driver's remove function is mostly ignored. (Only an error message is printed if the value is non-zero that the error is ignored.) So change the prototype of the remove function to return no value. This way driver authors are not tempted to assume that passing an error to the upper layer is a good idea. All drivers are adapted accordingly. There is no intended change of behaviour, all callbacks were prepared to return 0 before. Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com> Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au> Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Crt Mori <cmo@melexis.com> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013 Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/* Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5 Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860 Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power Acked-by: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-15 16:02:30 +08:00
static void da9055_i2c_remove(struct i2c_client *i2c)
{
struct da9055 *da9055 = i2c_get_clientdata(i2c);
da9055_device_exit(da9055);
}
/*
* DO NOT change the device Ids. The naming is intentionally specific as both
* the PMIC and CODEC parts of this chip are instantiated separately as I2C
* devices (both have configurable I2C addresses, and are to all intents and
* purposes separate). As a result there are specific DA9055 ids for PMIC
* and CODEC, which must be different to operate together.
*/
static const struct i2c_device_id da9055_i2c_id[] = {
{"da9055-pmic", 0},
{ }
};
MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);
static const struct of_device_id da9055_of_match[] = {
{ .compatible = "dlg,da9055-pmic", },
{ }
};
static struct i2c_driver da9055_i2c_driver = {
.probe_new = da9055_i2c_probe,
.remove = da9055_i2c_remove,
.id_table = da9055_i2c_id,
.driver = {
.name = "da9055-pmic",
.of_match_table = da9055_of_match,
},
};
static int __init da9055_i2c_init(void)
{
int ret;
ret = i2c_add_driver(&da9055_i2c_driver);
if (ret != 0) {
pr_err("DA9055 I2C registration failed %d\n", ret);
return ret;
}
return 0;
}
subsys_initcall(da9055_i2c_init);
static void __exit da9055_i2c_exit(void)
{
i2c_del_driver(&da9055_i2c_driver);
}
module_exit(da9055_i2c_exit);
MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
MODULE_LICENSE("GPL");