All twl6030 regulators can be programmed from 1.0v to 3.3v
with 100mV steps.
The below formula can be used to calculate the vsel values
to be programmed in the VREG_VOLTAGE registers.
Voltage(in mV) = 1000mv + 100mv * (vsel - 1)
Ex: if vsel = 0x9, mV = 1000 + 100 * (9 -1) = 1800mV.
This patch removes all existing VSEL tables for twl6030 adjustable
regulators and just uses the formula directly for vsel calculations
after verifing they fall in the allowed range.
Signed-off-by: Rajendra Nayak rna...@ti.com
Cc: Liam Girdwood l...@slimlogic.co.uk
Cc: Samuel Ortiz sa...@linux.intel.com
Cc: Mark Brown broo...@opensource.wolfsonmicro.com
---
drivers/regulator/twl-regulator.c | 138 -
1 files changed, 91 insertions(+), 47 deletions(-)
diff --git a/drivers/regulator/twl-regulator.c
b/drivers/regulator/twl-regulator.c
index 9729d76..7e5892e 100644
--- a/drivers/regulator/twl-regulator.c
+++ b/drivers/regulator/twl-regulator.c
@@ -49,6 +49,7 @@ struct twlreg_info {
/* chip constraints on regulator behavior */
u16 min_mV;
+ u16 max_mV;
/* used by regulator core */
struct regulator_desc desc;
@@ -318,31 +319,8 @@ static const u16 VIO_VSEL_table[] = {
static const u16 VINTANA2_VSEL_table[] = {
2500, 2750,
};
-static const u16 VAUX1_6030_VSEL_table[] = {
- 1000, 1300, 1800, 2500,
- 2800, 2900, 3000, 3000,
-};
-static const u16 VAUX2_6030_VSEL_table[] = {
- 1200, 1800, 2500, 2750,
- 2800, 2800, 2800, 2800,
-};
-static const u16 VAUX3_6030_VSEL_table[] = {
- 1000, 1200, 1300, 1800,
- 2500, 2800, 3000, 3000,
-};
-static const u16 VMMC_VSEL_table[] = {
- 1200, 1800, 2800, 2900,
- 3000, 3000, 3000, 3000,
-};
-static const u16 VPP_VSEL_table[] = {
- 1800, 1900, 2000, 2100,
- 2200, 2300, 2400, 2500,
-};
-static const u16 VUSIM_VSEL_table[] = {
- 1200, 1800, 2500, 2900,
-};
-static int twlldo_list_voltage(struct regulator_dev *rdev, unsigned index)
+static int twl4030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int mV = info-table[index];
@@ -351,7 +329,7 @@ static int twlldo_list_voltage(struct regulator_dev *rdev,
unsigned index)
}
static int
-twlldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
+twl4030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel;
@@ -375,7 +353,7 @@ twlldo_set_voltage(struct regulator_dev *rdev, int min_uV,
int max_uV)
return -EDOM;
}
-static int twlldo_get_voltage(struct regulator_dev *rdev)
+static int twl4030ldo_get_voltage(struct regulator_dev *rdev)
{
struct twlreg_info *info = rdev_get_drvdata(rdev);
int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
@@ -388,11 +366,67 @@ static int twlldo_get_voltage(struct regulator_dev *rdev)
return LDO_MV(info-table[vsel]) * 1000;
}
-static struct regulator_ops twlldo_ops = {
- .list_voltage = twlldo_list_voltage,
+static struct regulator_ops twl4030ldo_ops = {
+ .list_voltage = twl4030ldo_list_voltage,
- .set_voltage= twlldo_set_voltage,
- .get_voltage= twlldo_get_voltage,
+ .set_voltage= twl4030ldo_set_voltage,
+ .get_voltage= twl4030ldo_get_voltage,
+
+ .enable = twlreg_enable,
+ .disable= twlreg_disable,
+ .is_enabled = twlreg_is_enabled,
+
+ .set_mode = twlreg_set_mode,
+
+ .get_status = twlreg_get_status,
+};
+
+static int twl6030ldo_list_voltage(struct regulator_dev *rdev, unsigned index)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+
+ return ((info-min_mV + (index * 100)) * 1000);
+}
+
+static int
+twl6030ldo_set_voltage(struct regulator_dev *rdev, int min_uV, int max_uV)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int vsel;
+
+ if ((min_uV/1000 info-min_mV) || (max_uV/1000 info-max_mV))
+ return -EDOM;
+
+ /*
+* Use the below formula to calculate vsel
+* mV = 1000mv + 100mv * (vsel - 1)
+*/
+ vsel = (min_uV/1000 - 1000)/100 + 1;
+ return twlreg_write(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE, vsel);
+
+}
+
+static int twl6030ldo_get_voltage(struct regulator_dev *rdev)
+{
+ struct twlreg_info *info = rdev_get_drvdata(rdev);
+ int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER,
+ VREG_VOLTAGE);
+
+ if (vsel 0)
+ return vsel;
+
+ /*
+* Use the below formula to calculate vsel
+* mV = 1000mv + 100mv * (vsel - 1)
+*/
+ return (1000 + (100 *
