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Date: Tue, 10 Mar 2009 16:28:35 +0000
From: Mark Brown <broonie@...nsource.wolfsonmicro.com>
To: Liam Girdwood <lrg@...mlogic.co.uk>
Cc: linux-kernel@...r.kernel.org,
Mark Brown <broonie@...nsource.wolfsonmicro.com>
Subject: [PATCH 1/2] regulator: Implement list_voltage() for WM8400 DCDCs and LDOs
All DCDCs and LDOs are identical.
Signed-off-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>
---
drivers/regulator/wm8400-regulator.c | 34 ++++++++++++++++++++++++++++++----
1 files changed, 30 insertions(+), 4 deletions(-)
diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c
index 6ed43b0..1574260 100644
--- a/drivers/regulator/wm8400-regulator.c
+++ b/drivers/regulator/wm8400-regulator.c
@@ -43,6 +43,18 @@ static int wm8400_ldo_disable(struct regulator_dev *dev)
WM8400_LDO1_ENA, 0);
}
+static int wm8400_ldo_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ if (selector > WM8400_LDO1_VSEL_MASK)
+ return -EINVAL;
+
+ if (selector < 15)
+ return 900000 + (selector * 50000);
+ else
+ return 1600000 + ((selector - 14) * 100000);
+}
+
static int wm8400_ldo_get_voltage(struct regulator_dev *dev)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
@@ -51,10 +63,7 @@ static int wm8400_ldo_get_voltage(struct regulator_dev *dev)
val = wm8400_reg_read(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev));
val &= WM8400_LDO1_VSEL_MASK;
- if (val < 15)
- return 900000 + (val * 50000);
- else
- return 1600000 + ((val - 14) * 100000);
+ return wm8400_ldo_list_voltage(dev, val);
}
static int wm8400_ldo_set_voltage(struct regulator_dev *dev,
@@ -92,6 +101,7 @@ static struct regulator_ops wm8400_ldo_ops = {
.is_enabled = wm8400_ldo_is_enabled,
.enable = wm8400_ldo_enable,
.disable = wm8400_ldo_disable,
+ .list_voltage = wm8400_ldo_list_voltage,
.get_voltage = wm8400_ldo_get_voltage,
.set_voltage = wm8400_ldo_set_voltage,
};
@@ -124,6 +134,15 @@ static int wm8400_dcdc_disable(struct regulator_dev *dev)
WM8400_DC1_ENA, 0);
}
+static int wm8400_dcdc_list_voltage(struct regulator_dev *dev,
+ unsigned selector)
+{
+ if (selector > WM8400_DC1_VSEL_MASK)
+ return -EINVAL;
+
+ return 850000 + (selector * 25000);
+}
+
static int wm8400_dcdc_get_voltage(struct regulator_dev *dev)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
@@ -237,6 +256,7 @@ static struct regulator_ops wm8400_dcdc_ops = {
.is_enabled = wm8400_dcdc_is_enabled,
.enable = wm8400_dcdc_enable,
.disable = wm8400_dcdc_disable,
+ .list_voltage = wm8400_dcdc_list_voltage,
.get_voltage = wm8400_dcdc_get_voltage,
.set_voltage = wm8400_dcdc_set_voltage,
.get_mode = wm8400_dcdc_get_mode,
@@ -249,6 +269,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO1",
.id = WM8400_LDO1,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO1_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -256,6 +277,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO2",
.id = WM8400_LDO2,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO2_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -263,6 +285,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO3",
.id = WM8400_LDO3,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO3_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -270,6 +293,7 @@ static struct regulator_desc regulators[] = {
.name = "LDO4",
.id = WM8400_LDO4,
.ops = &wm8400_ldo_ops,
+ .n_voltages = WM8400_LDO4_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -277,6 +301,7 @@ static struct regulator_desc regulators[] = {
.name = "DCDC1",
.id = WM8400_DCDC1,
.ops = &wm8400_dcdc_ops,
+ .n_voltages = WM8400_DC1_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
@@ -284,6 +309,7 @@ static struct regulator_desc regulators[] = {
.name = "DCDC2",
.id = WM8400_DCDC2,
.ops = &wm8400_dcdc_ops,
+ .n_voltages = WM8400_DC2_VSEL_MASK + 1,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE,
},
--
1.6.2
--
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