regmap: Implement managed regmap_init()
Save error handling and unwinding code in drivers by providing managed versions of the regmap init functions, simplifying usage. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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567e47935a
Коммит
c0eb46766d
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@ -111,4 +111,21 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c,
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}
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EXPORT_SYMBOL_GPL(regmap_init_i2c);
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/**
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* devm_regmap_init_i2c(): Initialise managed register map
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*
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* @i2c: Device that will be interacted with
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* @config: Configuration for register map
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*
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* The return value will be an ERR_PTR() on error or a valid pointer
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* to a struct regmap. The regmap will be automatically freed by the
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* device management code.
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*/
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struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
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const struct regmap_config *config)
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{
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return devm_regmap_init(&i2c->dev, ®map_i2c, config);
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}
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EXPORT_SYMBOL_GPL(devm_regmap_init_i2c);
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MODULE_LICENSE("GPL");
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@ -70,4 +70,21 @@ struct regmap *regmap_init_spi(struct spi_device *spi,
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}
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EXPORT_SYMBOL_GPL(regmap_init_spi);
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/**
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* devm_regmap_init_spi(): Initialise register map
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*
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* @spi: Device that will be interacted with
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* @config: Configuration for register map
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*
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* The return value will be an ERR_PTR() on error or a valid pointer
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* to a struct regmap. The map will be automatically freed by the
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* device management code.
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*/
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struct regmap *devm_regmap_init_spi(struct spi_device *spi,
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const struct regmap_config *config)
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{
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return devm_regmap_init(&spi->dev, ®map_spi, config);
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}
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EXPORT_SYMBOL_GPL(devm_regmap_init_spi);
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MODULE_LICENSE("GPL");
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@ -258,6 +258,45 @@ err:
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}
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EXPORT_SYMBOL_GPL(regmap_init);
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static void devm_regmap_release(struct device *dev, void *res)
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{
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regmap_exit(*(struct regmap **)res);
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}
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/**
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* devm_regmap_init(): Initialise managed register map
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*
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* @dev: Device that will be interacted with
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* @bus: Bus-specific callbacks to use with device
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* @config: Configuration for register map
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*
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* The return value will be an ERR_PTR() on error or a valid pointer
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* to a struct regmap. This function should generally not be called
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* directly, it should be called by bus-specific init functions. The
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* map will be automatically freed by the device management code.
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*/
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struct regmap *devm_regmap_init(struct device *dev,
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const struct regmap_bus *bus,
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const struct regmap_config *config)
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{
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struct regmap **ptr, *regmap;
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ptr = devres_alloc(devm_regmap_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return ERR_PTR(-ENOMEM);
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regmap = regmap_init(dev, bus, config);
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if (!IS_ERR(regmap)) {
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*ptr = regmap;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return regmap;
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}
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EXPORT_SYMBOL_GPL(devm_regmap_init);
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/**
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* regmap_reinit_cache(): Reinitialise the current register cache
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*
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@ -127,6 +127,14 @@ struct regmap *regmap_init_i2c(struct i2c_client *i2c,
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struct regmap *regmap_init_spi(struct spi_device *dev,
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const struct regmap_config *config);
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struct regmap *devm_regmap_init(struct device *dev,
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const struct regmap_bus *bus,
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const struct regmap_config *config);
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struct regmap *devm_regmap_init_i2c(struct i2c_client *i2c,
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const struct regmap_config *config);
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struct regmap *devm_regmap_init_spi(struct spi_device *dev,
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const struct regmap_config *config);
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void regmap_exit(struct regmap *map);
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int regmap_reinit_cache(struct regmap *map,
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const struct regmap_config *config);
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