Commit 05692513 authored by Henry Chen's avatar Henry Chen Committed by Mark Brown

regulator: mt6397: Add buck change mode regulator interface for mt6397

BUCKs of mt6397 have auto mode and pwm mode.
User can use regulator interfaces to control modes
Signed-off-by: default avatarHenry Chen <henryc.chen@mediatek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent fb69114b
......@@ -23,6 +23,9 @@
#include <linux/regulator/mt6397-regulator.h>
#include <linux/regulator/of_regulator.h>
#define MT6397_BUCK_MODE_AUTO 0
#define MT6397_BUCK_MODE_FORCE_PWM 1
/*
* MT6397 regulators' information
*
......@@ -38,10 +41,14 @@ struct mt6397_regulator_info {
u32 vselon_reg;
u32 vselctrl_reg;
u32 vselctrl_mask;
u32 modeset_reg;
u32 modeset_mask;
u32 modeset_shift;
};
#define MT6397_BUCK(match, vreg, min, max, step, volt_ranges, enreg, \
vosel, vosel_mask, voselon, vosel_ctrl) \
vosel, vosel_mask, voselon, vosel_ctrl, _modeset_reg, \
_modeset_shift) \
[MT6397_ID_##vreg] = { \
.desc = { \
.name = #vreg, \
......@@ -62,6 +69,9 @@ struct mt6397_regulator_info {
.vselon_reg = voselon, \
.vselctrl_reg = vosel_ctrl, \
.vselctrl_mask = BIT(1), \
.modeset_reg = _modeset_reg, \
.modeset_mask = BIT(_modeset_shift), \
.modeset_shift = _modeset_shift \
}
#define MT6397_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel, \
......@@ -145,6 +155,63 @@ static const u32 ldo_volt_table7[] = {
1300000, 1500000, 1800000, 2000000, 2500000, 2800000, 3000000, 3300000,
};
static int mt6397_regulator_set_mode(struct regulator_dev *rdev,
unsigned int mode)
{
struct mt6397_regulator_info *info = rdev_get_drvdata(rdev);
int ret, val;
switch (mode) {
case REGULATOR_MODE_FAST:
val = MT6397_BUCK_MODE_FORCE_PWM;
break;
case REGULATOR_MODE_NORMAL:
val = MT6397_BUCK_MODE_AUTO;
break;
default:
ret = -EINVAL;
goto err_mode;
}
dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x, %#x\n",
info->modeset_reg, info->modeset_mask,
info->modeset_shift, val);
val <<= info->modeset_shift;
ret = regmap_update_bits(rdev->regmap, info->modeset_reg,
info->modeset_mask, val);
err_mode:
if (ret != 0) {
dev_err(&rdev->dev,
"Failed to set mt6397 buck mode: %d\n", ret);
return ret;
}
return 0;
}
static unsigned int mt6397_regulator_get_mode(struct regulator_dev *rdev)
{
struct mt6397_regulator_info *info = rdev_get_drvdata(rdev);
int ret, regval;
ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);
if (ret != 0) {
dev_err(&rdev->dev,
"Failed to get mt6397 buck mode: %d\n", ret);
return ret;
}
switch ((regval & info->modeset_mask) >> info->modeset_shift) {
case MT6397_BUCK_MODE_AUTO:
return REGULATOR_MODE_NORMAL;
case MT6397_BUCK_MODE_FORCE_PWM:
return REGULATOR_MODE_FAST;
default:
return -EINVAL;
}
}
static int mt6397_get_status(struct regulator_dev *rdev)
{
int ret;
......@@ -170,6 +237,8 @@ static const struct regulator_ops mt6397_volt_range_ops = {
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.get_status = mt6397_get_status,
.set_mode = mt6397_regulator_set_mode,
.get_mode = mt6397_regulator_get_mode,
};
static const struct regulator_ops mt6397_volt_table_ops = {
......@@ -196,28 +265,30 @@ static const struct regulator_ops mt6397_volt_fixed_ops = {
static struct mt6397_regulator_info mt6397_regulators[] = {
MT6397_BUCK("buck_vpca15", VPCA15, 700000, 1493750, 6250,
buck_volt_range1, MT6397_VCA15_CON7, MT6397_VCA15_CON9, 0x7f,
MT6397_VCA15_CON10, MT6397_VCA15_CON5),
MT6397_VCA15_CON10, MT6397_VCA15_CON5, MT6397_VCA15_CON2, 11),
MT6397_BUCK("buck_vpca7", VPCA7, 700000, 1493750, 6250,
buck_volt_range1, MT6397_VPCA7_CON7, MT6397_VPCA7_CON9, 0x7f,
MT6397_VPCA7_CON10, MT6397_VPCA7_CON5),
MT6397_VPCA7_CON10, MT6397_VPCA7_CON5, MT6397_VPCA7_CON2, 8),
MT6397_BUCK("buck_vsramca15", VSRAMCA15, 700000, 1493750, 6250,
buck_volt_range1, MT6397_VSRMCA15_CON7, MT6397_VSRMCA15_CON9,
0x7f, MT6397_VSRMCA15_CON10, MT6397_VSRMCA15_CON5),
0x7f, MT6397_VSRMCA15_CON10, MT6397_VSRMCA15_CON5,
MT6397_VSRMCA15_CON2, 8),
MT6397_BUCK("buck_vsramca7", VSRAMCA7, 700000, 1493750, 6250,
buck_volt_range1, MT6397_VSRMCA7_CON7, MT6397_VSRMCA7_CON9,
0x7f, MT6397_VSRMCA7_CON10, MT6397_VSRMCA7_CON5),
0x7f, MT6397_VSRMCA7_CON10, MT6397_VSRMCA7_CON5,
MT6397_VSRMCA7_CON2, 8),
MT6397_BUCK("buck_vcore", VCORE, 700000, 1493750, 6250,
buck_volt_range1, MT6397_VCORE_CON7, MT6397_VCORE_CON9, 0x7f,
MT6397_VCORE_CON10, MT6397_VCORE_CON5),
MT6397_VCORE_CON10, MT6397_VCORE_CON5, MT6397_VCORE_CON2, 8),
MT6397_BUCK("buck_vgpu", VGPU, 700000, 1493750, 6250, buck_volt_range1,
MT6397_VGPU_CON7, MT6397_VGPU_CON9, 0x7f,
MT6397_VGPU_CON10, MT6397_VGPU_CON5),
MT6397_VGPU_CON10, MT6397_VGPU_CON5, MT6397_VGPU_CON2, 8),
MT6397_BUCK("buck_vdrm", VDRM, 800000, 1593750, 6250, buck_volt_range2,
MT6397_VDRM_CON7, MT6397_VDRM_CON9, 0x7f,
MT6397_VDRM_CON10, MT6397_VDRM_CON5),
MT6397_VDRM_CON10, MT6397_VDRM_CON5, MT6397_VDRM_CON2, 8),
MT6397_BUCK("buck_vio18", VIO18, 1500000, 2120000, 20000,
buck_volt_range3, MT6397_VIO18_CON7, MT6397_VIO18_CON9, 0x1f,
MT6397_VIO18_CON10, MT6397_VIO18_CON5),
MT6397_VIO18_CON10, MT6397_VIO18_CON5, MT6397_VIO18_CON2, 8),
MT6397_REG_FIXED("ldo_vtcxo", VTCXO, MT6397_ANALDO_CON0, 10, 2800000),
MT6397_REG_FIXED("ldo_va28", VA28, MT6397_ANALDO_CON1, 14, 2800000),
MT6397_LDO("ldo_vcama", VCAMA, ldo_volt_table1,
......
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