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Date: Wed, 17 Apr 2013 22:55:45 +0800
From: Axel Lin <axel.lin@...ics.com>
To: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: Bengt Jonsson <bengt.g.jonsson@...ricsson.com>,
Lee Jones <lee.jones@...aro.org>,
Yvan FILLION <yvan.fillion@...ricsson.com>,
Liam Girdwood <lgirdwood@...il.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] 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@...ics.com>
---
drivers/regulator/ab8500.c | 33 ++++++++++++++++-----------------
1 file changed, 16 insertions(+), 17 deletions(-)
diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index ece31a3..f6656b8 100644
--- 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, ®val);
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,
},
/*
--
1.7.10.4
--
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