Signed-off-by: Haojian Zhuang <haojian.zhu...@marvell.com>
---
drivers/regulator/max8649.c | 70 +++++++++++++++++++++++++++++++++++++++++++
1 files changed, 70 insertions(+), 0 deletions(-)
diff --git a/drivers/regulator/max8649.c b/drivers/regulator/max8649.c
index 30eb9e5..4316a37 100644
--- a/drivers/regulator/max8649.c
+++ b/drivers/regulator/max8649.c
@@ -15,6 +15,7 @@
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/slab.h>
+#include <linux/of_regulator.h>
#include <linux/regulator/max8649.h>
#define MAX8649_DCDC_VMIN 750000 /* uV */
@@ -275,6 +276,69 @@ static struct regulator_desc dcdc_desc = {
.owner = THIS_MODULE,
};
+#ifdef CONFIG_OF_REGULATOR
+static struct max8649_platform_data __devinit
+*max8649_get_alt_pdata(struct i2c_client *client)
+{
+ struct device_node *np = client->dev.of_node;
+ struct max8649_platform_data *pdata;
+ const __be32 *mode, *extclk, *ramp;
+ int ret = 0;
+
+ if (np == NULL)
+ goto out;
+
+ mode = of_get_property(np, "max8649-mode", NULL);
+ if (mode == NULL) {
+ dev_err(&client->dev, "mode property is missed\n");
+ goto out;
+ }
+ extclk = of_get_property(np, "ext-clock-frequency", NULL);
+ if (extclk == NULL)
+ dev_dbg(&client->dev, "ext-clock-frequency is not set\n");
+ ramp = of_get_property(np, "max8649-ramp", NULL);
+ if (ramp == NULL) {
+ dev_err(&client->dev, "ramp is missed\n");
+ goto out;
+ }
+
+ pdata = kzalloc(sizeof(struct max8649_platform_data), GFP_KERNEL);
+ if (pdata == NULL)
+ goto out;
+ pdata->mode = be32_to_cpu(*mode);
+ if (extclk) {
+ pdata->extclk = 1;
+ pdata->extclk_freq = be32_to_cpu(*extclk);
+ }
+ if (ramp) {
+ pdata->ramp_timing = be32_to_cpu(*ramp++);
+ pdata->ramp_down = be32_to_cpu(*ramp);
+ }
+
+ pdata->regulator = kzalloc(sizeof(struct regulator_init_data),
+ GFP_KERNEL);
+ if (pdata->regulator == NULL)
+ goto out_pdata;
+ ret = of_regulator_init_data(np, pdata->regulator);
+ if (ret < 0)
+ goto out_regulator;
+ return pdata;
+
+out_regulator:
+ kfree(pdata->regulator);
+out_pdata:
+ kfree(pdata);
+out:
+ return NULL;
+}
+#else
+static struct max8649_platform_data __devinit
+*max8649_get_alt_pdata(struct i2c_client *client)
+{
+ return 0;
+}
+#endif
+
static int __devinit max8649_regulator_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -294,6 +358,12 @@ static int __devinit max8649_regulator_probe(struct
i2c_client *client,
mutex_init(&info->io_lock);
i2c_set_clientdata(client, info);
+ if (pdata == NULL) {
+ pdata = max8649_get_alt_pdata(client);
+ if (pdata == NULL)
+ return -ENODEV;
+ }
+
info->mode = pdata->mode;
switch (info->mode) {
case 0:
--
1.5.6.5
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