regulator: ab8500: Get rid of voltage_shift field from struct ab8500_regulator_info

The voltage_shift can be calculated from voltage_mask.
Let's remove voltage_shift fied from struct ab8500_regulator_info, this change
can prevent missing voltage_shift setting issue.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index ece31a3..f6656b8 100644 (file)
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -61,7 +61,6 @@ struct ab8500_shared_mode {
  * @voltage_bank: bank to control regulator voltage
  * @voltage_reg: register to control regulator voltage
  * @voltage_mask: mask to control regulator voltage
- * @voltage_shift: shift to control regulator voltage
  */
 struct ab8500_regulator_info {
        struct device           *dev;
@@ -83,7 +82,6 @@ struct ab8500_regulator_info {
        u8 voltage_bank;
        u8 voltage_reg;
        u8 voltage_mask;
-       u8 voltage_shift;
        struct {
                u8 voltage_limit;
                u8 voltage_bank;
@@ -480,7 +478,7 @@ static unsigned int ab8500_regulator_get_mode(struct regulator_dev *rdev)
 
 static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
 {
-       int ret, val;
+       int ret, voltage_shift;
        struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
        u8 regval;
 
@@ -489,6 +487,8 @@ static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
                return -EINVAL;
        }
 
+       voltage_shift = ffs(info->voltage_mask) - 1;
+
        ret = abx500_get_register_interruptible(info->dev,
                        info->voltage_bank, info->voltage_reg, &regval);
        if (ret < 0) {
@@ -502,15 +502,14 @@ static int ab8500_regulator_get_voltage_sel(struct regulator_dev *rdev)
                "0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n",
                info->desc.name, info->voltage_bank,
                info->voltage_reg, info->voltage_mask,
-               info->voltage_shift, regval);
+               voltage_shift, regval);
 
-       val = regval & info->voltage_mask;
-       return val >> info->voltage_shift;
+       return (regval & info->voltage_mask) >> voltage_shift;
 }
 
 static int ab8540_aux3_regulator_get_voltage_sel(struct regulator_dev *rdev)
 {
-       int ret;
+       int ret, voltage_shift;
        struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
        u8 regval, regval_expand;
 
@@ -550,13 +549,15 @@ static int ab8540_aux3_regulator_get_voltage_sel(struct regulator_dev *rdev)
                 info->desc.name, info->voltage_bank, info->voltage_reg,
                 info->voltage_mask, regval);
 
-       return (regval & info->voltage_mask) >> info->voltage_shift;
+       voltage_shift = ffs(info->voltage_mask) - 1;
+
+       return (regval & info->voltage_mask) >> voltage_shift;
 }
 
 static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
                                            unsigned selector)
 {
-       int ret;
+       int ret, voltage_shift;
        struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
        u8 regval;
 
@@ -565,8 +566,10 @@ static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
                return -EINVAL;
        }
 
+       voltage_shift = ffs(info->voltage_mask) - 1;
+
        /* set the registers for the request */
-       regval = (u8)selector << info->voltage_shift;
+       regval = (u8)selector << voltage_shift;
        ret = abx500_mask_and_set_register_interruptible(info->dev,
                        info->voltage_bank, info->voltage_reg,
                        info->voltage_mask, regval);
@@ -596,7 +599,9 @@ static int ab8540_aux3_regulator_set_voltage_sel(struct regulator_dev *rdev,
        }
 
        if (selector < info->expand_register.voltage_limit) {
-               regval = (u8)selector << info->voltage_shift;
+               int voltage_shift = ffs(info->voltage_mask) - 1;
+
+               regval = (u8)selector << voltage_shift;
                ret = abx500_mask_and_set_register_interruptible(info->dev,
                                        info->voltage_bank, info->voltage_reg,
                                        info->voltage_mask, regval);
@@ -791,7 +796,6 @@ static struct ab8500_regulator_info
                .voltage_bank           = 0x03,
                .voltage_reg            = 0x80,
                .voltage_mask           = 0x38,
-               .voltage_shift          = 3,
        },
 
        /*
@@ -1066,7 +1070,6 @@ static struct ab8500_regulator_info
                .voltage_bank           = 0x03,
                .voltage_reg            = 0x80,
                .voltage_mask           = 0x38,
-               .voltage_shift          = 3,
        },
 
        /*
@@ -1127,7 +1130,6 @@ static struct ab8500_regulator_info
                .voltage_bank           = 0x01,
                .voltage_reg            = 0x57,
                .voltage_mask           = 0x70,
-               .voltage_shift          = 4,
        },
        [AB8505_LDO_ANAMIC1] = {
                .desc = {
@@ -1327,7 +1329,6 @@ static struct ab8500_regulator_info
                .voltage_bank           = 0x03,
                .voltage_reg            = 0x80,
                .voltage_mask           = 0x38,
-               .voltage_shift          = 3,
        },
 
        /*
@@ -1622,7 +1623,6 @@ static struct ab8500_regulator_info
                .voltage_bank           = 0x03,
                .voltage_reg            = 0x80,
                .voltage_mask           = 0x38,
-               .voltage_shift          = 3,
        },
 
        /*
@@ -1724,7 +1724,6 @@ static struct ab8500_regulator_info
                .voltage_bank           = 0x03,
                .voltage_reg            = 0x83,
                .voltage_mask           = 0xc0,
-               .voltage_shift          = 6,
        },
 
        /*