From f96a5d3f1c09ce85ac1a90d733ca3585b9f2f70a Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 17 Feb 2014 13:16:55 +0100 Subject: ASoC: adav80x: Use devm_kzalloc() Use devm_kzalloc() to allocate the device state struct. Saves use from having to free it manually on the error path and in the remove callback. Now that the adav80x_bus_probe() function is only a call to snd_soc_unregister_codec() also inline that. Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- sound/soc/codecs/adav80x.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) (limited to 'sound/soc/codecs/adav80x.c') diff --git a/sound/soc/codecs/adav80x.c b/sound/soc/codecs/adav80x.c index f78b27a7c461..a4bd051c5430 100644 --- a/sound/soc/codecs/adav80x.c +++ b/sound/soc/codecs/adav80x.c @@ -872,27 +872,15 @@ static int adav80x_bus_probe(struct device *dev, struct regmap *regmap) if (IS_ERR(regmap)) return PTR_ERR(regmap); - adav80x = kzalloc(sizeof(*adav80x), GFP_KERNEL); + adav80x = devm_kzalloc(dev, sizeof(*adav80x), GFP_KERNEL); if (!adav80x) return -ENOMEM; - dev_set_drvdata(dev, adav80x); adav80x->regmap = regmap; - ret = snd_soc_register_codec(dev, &adav80x_codec_driver, + return snd_soc_register_codec(dev, &adav80x_codec_driver, adav80x_dais, ARRAY_SIZE(adav80x_dais)); - if (ret) - kfree(adav80x); - - return ret; -} - -static int adav80x_bus_remove(struct device *dev) -{ - snd_soc_unregister_codec(dev); - kfree(dev_get_drvdata(dev)); - return 0; } #if defined(CONFIG_SPI_MASTER) @@ -923,7 +911,8 @@ static int adav80x_spi_probe(struct spi_device *spi) static int adav80x_spi_remove(struct spi_device *spi) { - return adav80x_bus_remove(&spi->dev); + snd_soc_unregister_codec(dev); + return 0; } static struct spi_driver adav80x_spi_driver = { @@ -965,7 +954,8 @@ static int adav80x_i2c_probe(struct i2c_client *client, static int adav80x_i2c_remove(struct i2c_client *client) { - return adav80x_bus_remove(&client->dev); + snd_soc_unregister_codec(dev); + return 0; } static struct i2c_driver adav80x_i2c_driver = { -- cgit v1.2.3 From 0c2d6964562835501280409cac5d4ee28e07e8c2 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 17 Feb 2014 13:16:56 +0100 Subject: ASoC: adav80x: Split SPI and I2C code into different modules There are a few known (minor) problems with having the support code for both I2C and SPI in the same module: * We need to be extra careful to make sure to not build the driver into the kernel if one of the subsystems is build as a module (Currently only I2C can be build as a module). * The module init path error handling is rather ugly. E.g. what should be done if either the SPI or the I2C driver fails to register. Most drivers that implement SPI and I2C in the same module currently fallback to undefined behavior in that case. Splitting the the driver into two modules, one for each bus, allows the registration of the other bus drive to continue without problems if one of them fails. This patch splits the ADAV80X driver into 3 modules. One core module that implements the device logic, but is independent of the bus method used. And one module for SPI and I2C each that registers the drivers and sets up the regmap struct for the bus. Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- sound/soc/codecs/adav80x.c | 117 +++------------------------------------------ 1 file changed, 7 insertions(+), 110 deletions(-) (limited to 'sound/soc/codecs/adav80x.c') diff --git a/sound/soc/codecs/adav80x.c b/sound/soc/codecs/adav80x.c index a4bd051c5430..09d560962e8d 100644 --- a/sound/soc/codecs/adav80x.c +++ b/sound/soc/codecs/adav80x.c @@ -8,17 +8,15 @@ * Licensed under the GPL-2 or later. */ -#include #include #include -#include -#include +#include #include -#include + #include #include -#include #include +#include #include "adav80x.h" @@ -864,10 +862,9 @@ static struct snd_soc_codec_driver adav80x_codec_driver = { .num_dapm_routes = ARRAY_SIZE(adav80x_dapm_routes), }; -static int adav80x_bus_probe(struct device *dev, struct regmap *regmap) +int adav80x_bus_probe(struct device *dev, struct regmap *regmap) { struct adav80x *adav80x; - int ret; if (IS_ERR(regmap)) return PTR_ERR(regmap); @@ -882,9 +879,9 @@ static int adav80x_bus_probe(struct device *dev, struct regmap *regmap) return snd_soc_register_codec(dev, &adav80x_codec_driver, adav80x_dais, ARRAY_SIZE(adav80x_dais)); } +EXPORT_SYMBOL_GPL(adav80x_bus_probe); -#if defined(CONFIG_SPI_MASTER) -static const struct regmap_config adav80x_spi_regmap_config = { +const struct regmap_config adav80x_regmap_config = { .val_bits = 8, .pad_bits = 1, .reg_bits = 7, @@ -896,107 +893,7 @@ static const struct regmap_config adav80x_spi_regmap_config = { .reg_defaults = adav80x_reg_defaults, .num_reg_defaults = ARRAY_SIZE(adav80x_reg_defaults), }; - -static const struct spi_device_id adav80x_spi_id[] = { - { "adav801", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, adav80x_spi_id); - -static int adav80x_spi_probe(struct spi_device *spi) -{ - return adav80x_bus_probe(&spi->dev, - devm_regmap_init_spi(spi, &adav80x_spi_regmap_config)); -} - -static int adav80x_spi_remove(struct spi_device *spi) -{ - snd_soc_unregister_codec(dev); - return 0; -} - -static struct spi_driver adav80x_spi_driver = { - .driver = { - .name = "adav801", - .owner = THIS_MODULE, - }, - .probe = adav80x_spi_probe, - .remove = adav80x_spi_remove, - .id_table = adav80x_spi_id, -}; -#endif - -#if IS_ENABLED(CONFIG_I2C) -static const struct regmap_config adav80x_i2c_regmap_config = { - .val_bits = 8, - .pad_bits = 1, - .reg_bits = 7, - - .max_register = ADAV80X_PLL_OUTE, - - .cache_type = REGCACHE_RBTREE, - .reg_defaults = adav80x_reg_defaults, - .num_reg_defaults = ARRAY_SIZE(adav80x_reg_defaults), -}; - -static const struct i2c_device_id adav80x_i2c_id[] = { - { "adav803", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, adav80x_i2c_id); - -static int adav80x_i2c_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - return adav80x_bus_probe(&client->dev, - devm_regmap_init_i2c(client, &adav80x_i2c_regmap_config)); -} - -static int adav80x_i2c_remove(struct i2c_client *client) -{ - snd_soc_unregister_codec(dev); - return 0; -} - -static struct i2c_driver adav80x_i2c_driver = { - .driver = { - .name = "adav803", - .owner = THIS_MODULE, - }, - .probe = adav80x_i2c_probe, - .remove = adav80x_i2c_remove, - .id_table = adav80x_i2c_id, -}; -#endif - -static int __init adav80x_init(void) -{ - int ret = 0; - -#if IS_ENABLED(CONFIG_I2C) - ret = i2c_add_driver(&adav80x_i2c_driver); - if (ret) - return ret; -#endif - -#if defined(CONFIG_SPI_MASTER) - ret = spi_register_driver(&adav80x_spi_driver); -#endif - - return ret; -} -module_init(adav80x_init); - -static void __exit adav80x_exit(void) -{ -#if IS_ENABLED(CONFIG_I2C) - i2c_del_driver(&adav80x_i2c_driver); -#endif -#if defined(CONFIG_SPI_MASTER) - spi_unregister_driver(&adav80x_spi_driver); -#endif -} -module_exit(adav80x_exit); +EXPORT_SYMBOL_GPL(adav80x_regmap_config); MODULE_DESCRIPTION("ASoC ADAV80x driver"); MODULE_AUTHOR("Lars-Peter Clausen "); -- cgit v1.2.3