diff options
Diffstat (limited to 'drivers/regulator/tps6586x-regulator.c')
| -rw-r--r-- | drivers/regulator/tps6586x-regulator.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c index bb04a75a4c9..14b9389dd52 100644 --- a/drivers/regulator/tps6586x-regulator.c +++ b/drivers/regulator/tps6586x-regulator.c @@ -14,6 +14,7 @@ */ #include <linux/kernel.h> +#include <linux/module.h> #include <linux/init.h> #include <linux/err.h> #include <linux/slab.h> @@ -332,6 +333,36 @@ static inline int tps6586x_regulator_preinit(struct device *parent, 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 +405,7 @@ static int __devinit tps6586x_regulator_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rdev); - return 0; + return tps6586x_regulator_set_slew_rate(pdev); } static int __devexit tps6586x_regulator_remove(struct platform_device *pdev) |