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123 lines
2.8 KiB
123 lines
2.8 KiB
// 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 <[email protected]> |
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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 int 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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return 0; |
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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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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_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 <[email protected]>"); |
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MODULE_LICENSE("GPL");
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