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ed5c2f5fd1
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>
134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Arizona-i2c.c -- Arizona I2C bus interface
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*
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* Copyright 2012 Wolfson Microelectronics plc
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*
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* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/mfd/arizona/core.h>
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#include "arizona.h"
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static int arizona_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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const void *match_data;
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struct arizona *arizona;
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const struct regmap_config *regmap_config = NULL;
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unsigned long type = 0;
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int ret;
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match_data = device_get_match_data(&i2c->dev);
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if (match_data)
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type = (unsigned long)match_data;
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else if (id)
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type = id->driver_data;
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switch (type) {
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case WM5102:
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if (IS_ENABLED(CONFIG_MFD_WM5102))
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regmap_config = &wm5102_i2c_regmap;
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break;
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case WM5110:
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case WM8280:
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if (IS_ENABLED(CONFIG_MFD_WM5110))
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regmap_config = &wm5110_i2c_regmap;
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break;
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case WM8997:
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if (IS_ENABLED(CONFIG_MFD_WM8997))
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regmap_config = &wm8997_i2c_regmap;
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break;
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case WM8998:
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case WM1814:
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if (IS_ENABLED(CONFIG_MFD_WM8998))
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regmap_config = &wm8998_i2c_regmap;
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break;
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default:
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dev_err(&i2c->dev, "Unknown device type %ld\n", type);
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return -EINVAL;
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}
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if (!regmap_config) {
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dev_err(&i2c->dev,
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"No kernel support for device type %ld\n", type);
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return -EINVAL;
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}
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arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
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if (arizona == NULL)
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return -ENOMEM;
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arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
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if (IS_ERR(arizona->regmap)) {
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ret = PTR_ERR(arizona->regmap);
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dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
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ret);
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return ret;
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}
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arizona->type = type;
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arizona->dev = &i2c->dev;
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arizona->irq = i2c->irq;
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return arizona_dev_init(arizona);
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}
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static void arizona_i2c_remove(struct i2c_client *i2c)
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{
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struct arizona *arizona = dev_get_drvdata(&i2c->dev);
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arizona_dev_exit(arizona);
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}
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static const struct i2c_device_id arizona_i2c_id[] = {
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{ "wm5102", WM5102 },
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{ "wm5110", WM5110 },
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{ "wm8280", WM8280 },
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{ "wm8997", WM8997 },
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{ "wm8998", WM8998 },
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{ "wm1814", WM1814 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
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#ifdef CONFIG_OF
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static const struct of_device_id arizona_i2c_of_match[] = {
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{ .compatible = "wlf,wm5102", .data = (void *)WM5102 },
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{ .compatible = "wlf,wm5110", .data = (void *)WM5110 },
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{ .compatible = "wlf,wm8280", .data = (void *)WM8280 },
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{ .compatible = "wlf,wm8997", .data = (void *)WM8997 },
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{ .compatible = "wlf,wm8998", .data = (void *)WM8998 },
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{ .compatible = "wlf,wm1814", .data = (void *)WM1814 },
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{},
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};
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#endif
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static struct i2c_driver arizona_i2c_driver = {
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.driver = {
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.name = "arizona",
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.pm = &arizona_pm_ops,
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.of_match_table = of_match_ptr(arizona_i2c_of_match),
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},
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.probe = arizona_i2c_probe,
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.remove = arizona_i2c_remove,
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.id_table = arizona_i2c_id,
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};
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module_i2c_driver(arizona_i2c_driver);
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MODULE_SOFTDEP("pre: arizona_ldo1");
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MODULE_DESCRIPTION("Arizona I2C bus interface");
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MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
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MODULE_LICENSE("GPL");
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