| 1 | /* |
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| 2 | * Cirrus Logic CS42448/CS42888 Audio CODEC DAI I2C driver |
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| 3 | * |
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| 4 | * Copyright (C) 2014 Freescale Semiconductor, Inc. |
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| 5 | * |
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| 6 | * Author: Nicolin Chen <Guangyu.Chen@freescale.com> |
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| 7 | * |
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| 8 | * This file is licensed under the terms of the GNU General Public License |
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| 9 | * version 2. This program is licensed "as is" without any warranty of any |
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| 10 | * kind, whether express or implied. |
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| 11 | */ |
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| 12 | |
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| 13 | #include <linux/i2c.h> |
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| 14 | #include <linux/module.h> |
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| 15 | #include <linux/mod_devicetable.h> |
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| 16 | #include <linux/pm_runtime.h> |
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| 17 | #include <sound/soc.h> |
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| 18 | |
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| 19 | #include "cs42xx8.h" |
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| 20 | |
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| 21 | static int cs42xx8_i2c_probe(struct i2c_client *i2c) |
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| 22 | { |
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| 23 | int ret; |
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| 24 | struct cs42xx8_driver_data *drvdata; |
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| 25 | |
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| 26 | drvdata = (struct cs42xx8_driver_data *)i2c_get_match_data(client: i2c); |
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| 27 | if (!drvdata) |
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| 28 | return dev_err_probe(dev: &i2c->dev, err: -EINVAL, |
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| 29 | fmt: "failed to find driver data\n" ); |
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| 30 | |
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| 31 | ret = cs42xx8_probe(dev: &i2c->dev, |
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| 32 | devm_regmap_init_i2c(i2c, &cs42xx8_regmap_config), drvdata); |
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| 33 | if (ret) |
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| 34 | return ret; |
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| 35 | |
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| 36 | pm_runtime_enable(dev: &i2c->dev); |
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| 37 | pm_request_idle(dev: &i2c->dev); |
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| 38 | |
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| 39 | return 0; |
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| 40 | } |
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| 41 | |
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| 42 | static void cs42xx8_i2c_remove(struct i2c_client *i2c) |
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| 43 | { |
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| 44 | pm_runtime_disable(dev: &i2c->dev); |
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| 45 | } |
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| 46 | |
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| 47 | static const struct of_device_id cs42xx8_of_match[] = { |
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| 48 | { .compatible = "cirrus,cs42448" , .data = &cs42448_data, }, |
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| 49 | { .compatible = "cirrus,cs42888" , .data = &cs42888_data, }, |
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| 50 | { /* sentinel */ } |
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| 51 | }; |
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| 52 | MODULE_DEVICE_TABLE(of, cs42xx8_of_match); |
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| 53 | |
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| 54 | static const struct i2c_device_id cs42xx8_i2c_id[] = { |
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| 55 | {"cs42448" , (kernel_ulong_t)&cs42448_data}, |
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| 56 | {"cs42888" , (kernel_ulong_t)&cs42888_data}, |
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| 57 | {} |
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| 58 | }; |
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| 59 | MODULE_DEVICE_TABLE(i2c, cs42xx8_i2c_id); |
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| 60 | |
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| 61 | static struct i2c_driver cs42xx8_i2c_driver = { |
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| 62 | .driver = { |
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| 63 | .name = "cs42xx8" , |
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| 64 | .pm = &cs42xx8_pm, |
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| 65 | .of_match_table = cs42xx8_of_match, |
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| 66 | }, |
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| 67 | .probe = cs42xx8_i2c_probe, |
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| 68 | .remove = cs42xx8_i2c_remove, |
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| 69 | .id_table = cs42xx8_i2c_id, |
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| 70 | }; |
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| 71 | |
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| 72 | module_i2c_driver(cs42xx8_i2c_driver); |
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| 73 | |
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| 74 | MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec I2C Driver" ); |
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| 75 | MODULE_AUTHOR("Freescale Semiconductor, Inc." ); |
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| 76 | MODULE_LICENSE("GPL" ); |
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| 77 | |
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