regulator: tps6586x: add SMx slew rate setting
Add output vlotage slew rate setting for SM0/SM1
Signed-off-by: Xin Xie <xxie@nvidia.com>
Signed-off-by: Danny Huang <dahuang@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c
index bb04a75..dbcf09d 100644
--- a/drivers/regulator/tps6586x-regulator.c
+++ b/drivers/regulator/tps6586x-regulator.c
@@ -332,6 +332,36 @@
1 << ri->enable_bit[1]);
}
+static int tps6586x_regulator_set_slew_rate(struct platform_device *pdev)
+{
+ struct device *parent = pdev->dev.parent;
+ struct regulator_init_data *p = pdev->dev.platform_data;
+ struct tps6586x_settings *setting = p->driver_data;
+ uint8_t reg;
+
+ if (setting == NULL)
+ return 0;
+
+ if (!(setting->slew_rate & TPS6586X_SLEW_RATE_SET))
+ return 0;
+
+ /* only SM0 and SM1 can have the slew rate settings */
+ switch (pdev->id) {
+ case TPS6586X_ID_SM_0:
+ reg = TPS6586X_SM0SL;
+ break;
+ case TPS6586X_ID_SM_1:
+ reg = TPS6586X_SM1SL;
+ break;
+ default:
+ dev_warn(&pdev->dev, "Only SM0/SM1 can set slew rate\n");
+ return -EINVAL;
+ }
+
+ return tps6586x_write(parent, reg,
+ setting->slew_rate & TPS6586X_SLEW_RATE_MASK);
+}
+
static inline struct tps6586x_regulator *find_regulator_info(int id)
{
struct tps6586x_regulator *ri;
@@ -374,7 +404,7 @@
platform_set_drvdata(pdev, rdev);
- return 0;
+ return tps6586x_regulator_set_slew_rate(pdev);
}
static int __devexit tps6586x_regulator_remove(struct platform_device *pdev)