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Subject[PATCH 5/5] regulator: arizona-micsupp: Add processing of init_data from device tree
Date
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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