[PATCH v2 4/8] regulator: da9055: Add DT support

Adam Thomson
2014-02-06T18:06:29Z

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
---
drivers/regulator/da9055-regulator.c | 69 ++++++++++++++++++++++++++++++++--
1 files changed, 65 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/da9055-regulator.c b/drivers/regulator/da9055-regulator.c
index 7f34020..d90f785 100644
--- a/drivers/regulator/da9055-regulator.c
+++ b/drivers/regulator/da9055-regulator.c
@@ -19,6 +19,8 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/of.h>
+#include <linux/regulator/of_regulator.h>

#include <linux/mfd/da9055/core.h>
#include <linux/mfd/da9055/reg.h>
@@ -446,6 +448,9 @@ static int da9055_gpio_init(struct da9055_regulator *regulator,
struct da9055_regulator_info *info = regulator->info;
int ret = 0;

+ if (!pdata)
+ return 0;
+
if (pdata->gpio_ren && pdata->gpio_ren[id]) {
char name[18];
int gpio_mux = pdata->gpio_ren[id];
@@ -530,6 +535,59 @@ static inline struct da9055_regulator_info *find_regulator_info(int id)
return NULL;
}

+#ifdef CONFIG_OF
+static struct of_regulator_match da9055_reg_matches[] = {
+ { .name = "BUCK1", },
+ { .name = "BUCK2", },
+ { .name = "LDO1", },
+ { .name = "LDO2", },
+ { .name = "LDO3", },
+ { .name = "LDO4", },
+ { .name = "LDO5", },
+ { .name = "LDO6", },
+};
+
+static int da9055_regulator_dt_init(struct platform_device *pdev,
+ struct da9055_regulator *regulator,
+ struct regulator_config *config,
+ int regid)
+{
+ struct device_node *nproot, *np;
+ int ret;
+
+ nproot = of_node_get(pdev->dev.parent->of_node);
+ if (!nproot)
+ return -ENODEV;
+
+ np = of_find_node_by_name(nproot, "regulators");
+ if (!np)
+ return -ENODEV;
+
+ ret = of_regulator_match(&pdev->dev, np, &da9055_reg_matches[regid], 1);
+ of_node_put(nproot);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Error matching regulator: %d\n", ret);
+ return -ENODEV;
+ }
+
+ config->init_data = da9055_reg_matches[regid].init_data;
+ config->of_node = da9055_reg_matches[regid].of_node;
+
+ if (!config->of_node)
+ return -ENODEV;
+
+ return 0;
+}
+#else
+static inline da9055_regulator_dt_init(struct platform_device *pdev,
+ struct da9055_regulator *regulator,
+ struct regulator_config *config,
+ int regid)
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_OF */
+
static int da9055_regulator_probe(struct platform_device *pdev)
{
struct regulator_config config = { };
@@ -538,9 +596,6 @@ static int da9055_regulator_probe(struct platform_device *pdev)
struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
int ret, irq;

- if (pdata == NULL || pdata->regulators[pdev->id] == NULL)
- return -ENODEV;
-
regulator = devm_kzalloc(&pdev->dev, sizeof(struct da9055_regulator),
GFP_KERNEL);
if (!regulator)
@@ -557,8 +612,14 @@ static int da9055_regulator_probe(struct platform_device *pdev)
config.driver_data = regulator;
config.regmap = da9055->regmap;

- if (pdata && pdata->regulators)
+ if (pdata && pdata->regulators) {
config.init_data = pdata->regulators[pdev->id];
+ } else {
+ ret = da9055_regulator_dt_init(pdev, regulator, &config,
+ pdev->id);
+ if (ret < 0)
+ return ret;
+ }

ret = da9055_gpio_init(regulator, &config, pdata, pdev->id);
if (ret < 0)
--
1.7.0.4