Messages in this thread Patch in this message | | | From | Charles Keepax <> | Subject | [PATCH 5/5] regulator: arizona-micsupp: Add processing of init_data from device tree | Date | Wed, 19 Mar 2014 10:18:58 +0000 |
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Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> --- Documentation/devicetree/bindings/mfd/arizona.txt | 6 ++- drivers/regulator/arizona-micsupp.c | 50 +++++++++++++++++++++ 2 files changed, 54 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt index 9d54c70..9c685b2 100644 --- a/Documentation/devicetree/bindings/mfd/arizona.txt +++ b/Documentation/devicetree/bindings/mfd/arizona.txt @@ -44,9 +44,11 @@ Optional properties: - ldo1 : Initial data for the LDO1 regulator, as covered in Documentation/devicetree/bindings/regulator/regulator.txt + - micvdd : Initial data for the MICVDD regulator, as covered in + Documentation/devicetree/bindings/regulator/regulator.txt - - DCVDD-supply : Power supply, only needs to be specified if DCVDD is being - externally supplied. As covered in + - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if + they are being externally supplied. As covered in Documentation/devicetree/bindings/regulator/regulator.txt Example: diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c index 6fdd9bf..8b38f6b 100644 --- a/drivers/regulator/arizona-micsupp.c +++ b/drivers/regulator/arizona-micsupp.c @@ -19,6 +19,7 @@ #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> #include <linux/gpio.h> #include <linux/slab.h> #include <linux/workqueue.h> @@ -195,6 +196,49 @@ static const struct regulator_init_data arizona_micsupp_ext_default = { .num_consumer_supplies = 1, }; +#ifdef CONFIG_OF +static int arizona_micsupp_of_get_pdata(struct arizona *arizona, + struct regulator_config *config) +{ + struct arizona_pdata *pdata = &arizona->pdata; + struct arizona_micsupp *micsupp = config->driver_data; + struct device_node *np; + struct regulator_init_data *init_data; + + np = of_get_child_by_name(arizona->dev->of_node, "micvdd"); + + if (np) { + config->of_node = np; + + init_data = of_get_regulator_init_data(arizona->dev, np); + + if (init_data) { + init_data->consumer_supplies = &micsupp->supply; + init_data->num_consumer_supplies = 1; + + pdata->micvdd = init_data; + } + } + + return 0; +} + +static void arizona_micsupp_of_put_pdata(struct regulator_config *config) +{ + of_node_put(config->of_node); +} +#else +static inline int arizona_micsupp_of_get_pdata(struct arizona *arizona, + struct regulator_config *config) +{ + return 0; +} + +static inline void arizona_micsupp_of_put_pdata(struct regulator_config *config) +{ +} +#endif + static int arizona_micsupp_probe(struct platform_device *pdev) { struct arizona *arizona = dev_get_drvdata(pdev->dev.parent); @@ -234,6 +278,10 @@ static int arizona_micsupp_probe(struct platform_device *pdev) config.driver_data = micsupp; config.regmap = arizona->regmap; + ret = arizona_micsupp_of_get_pdata(arizona, &config); + if (ret < 0) + return ret; + if (arizona->pdata.micvdd) config.init_data = arizona->pdata.micvdd; else @@ -253,6 +301,8 @@ static int arizona_micsupp_probe(struct platform_device *pdev) return ret; } + arizona_micsupp_of_put_pdata(&config); + platform_set_drvdata(pdev, micsupp); return 0; -- 1.7.2.5
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