lkml.org 
[lkml]   [2014]   [Mar]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/5] regulator: arizona-ldo1: Add processing of init_data from device tree
Date
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
---
Documentation/devicetree/bindings/mfd/arizona.txt | 7 +++
drivers/regulator/arizona-ldo1.c | 46 +++++++++++++++++++-
2 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
index 36a0c3d..9d54c70 100644
--- a/Documentation/devicetree/bindings/mfd/arizona.txt
+++ b/Documentation/devicetree/bindings/mfd/arizona.txt
@@ -42,6 +42,13 @@ Optional properties:
the chip default will be used. If present exactly five values must
be specified.

+ - ldo1 : Initial data for the LDO1 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
+ Documentation/devicetree/bindings/regulator/regulator.txt
+
Example:

codec: wm5102@1a {
diff --git a/drivers/regulator/arizona-ldo1.c b/drivers/regulator/arizona-ldo1.c
index 3ac4b95..7a0d8e4 100644
--- a/drivers/regulator/arizona-ldo1.c
+++ b/drivers/regulator/arizona-ldo1.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>

@@ -179,19 +180,56 @@ static const struct regulator_init_data arizona_ldo1_default = {
};

#ifdef CONFIG_OF
-static int arizona_ldo1_of_get_pdata(struct arizona *arizona)
+static int arizona_ldo1_of_get_pdata(struct arizona *arizona,
+ struct regulator_config *config)
{
struct arizona_pdata *pdata = &arizona->pdata;
+ struct arizona_ldo1 *ldo1 = config->driver_data;
+ struct device_node *init_node, *dcvdd_node;
+ struct regulator_init_data *init_data;

arizona_of_get_named_gpio(arizona, "wlf,ldoena", true, &pdata->ldoena);

+ init_node = of_get_child_by_name(arizona->dev->of_node, "ldo1");
+ dcvdd_node = of_parse_phandle(arizona->dev->of_node, "DCVDD-supply", 0);
+
+ if (init_node) {
+ config->of_node = init_node;
+
+ init_data = of_get_regulator_init_data(arizona->dev, init_node);
+
+ if (init_data) {
+ init_data->consumer_supplies = &ldo1->supply;
+ init_data->num_consumer_supplies = 1;
+
+ if (dcvdd_node && dcvdd_node != init_node)
+ arizona->external_dcvdd = true;
+
+ pdata->ldo1 = init_data;
+ }
+ } else if (dcvdd_node) {
+ arizona->external_dcvdd = true;
+ }
+
+ of_node_put(dcvdd_node);
+
return 0;
}
+
+static void arizona_ldo1_of_put_pdata(struct regulator_config *config)
+{
+ of_node_put(config->of_node);
+}
#else
-static inline int arizona_ldo1_of_get_pdata(struct arizona *arizona)
+static inline int arizona_ldo1_of_get_pdata(struct arizona *arizona,
+ struct regulator_config *config)
{
return 0;
}
+
+static inline void arizona_ldo1_of_put_pdata(struct regulator_config *config)
+{
+}
#endif

static int arizona_ldo1_probe(struct platform_device *pdev)
@@ -235,7 +273,7 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
config.driver_data = ldo1;
config.regmap = arizona->regmap;

- ret = arizona_ldo1_of_get_pdata(arizona);
+ ret = arizona_ldo1_of_get_pdata(arizona, &config);
if (ret < 0)
return ret;

@@ -261,6 +299,8 @@ static int arizona_ldo1_probe(struct platform_device *pdev)
return ret;
}

+ arizona_ldo1_of_put_pdata(&config);
+
platform_set_drvdata(pdev, ldo1);

return 0;
--
1.7.2.5


\
 
 \ /
  Last update: 2014-03-19 13:01    [W:0.119 / U:14.484 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site