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50d3ac7d3c
Only export the arizona_pm_ops if CONFIG_PM is set, but leave the suspend/resume functions (and related code) outside #ifdef guards. If CONFIG_PM is not set, the arizona_pm_ops will be defined as "static __maybe_unused", and the structure plus all the callbacks will be automatically dropped by the compiler. This has the advantage of always compiling these functions in, independently of any Kconfig option. Thanks to that, bugs and other regressions are subsequently easier to catch. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by: Lee Jones <lee@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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{
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const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
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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 = pm_ptr(&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_new = 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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