diff options
Diffstat (limited to 'drivers/regulator/mt6397-regulator.c')
| -rw-r--r-- | drivers/regulator/mt6397-regulator.c | 95 |
1 files changed, 83 insertions, 12 deletions
diff --git a/drivers/regulator/mt6397-regulator.c b/drivers/regulator/mt6397-regulator.c index 17a5b6c2d6a9..c6c6aa85e4e8 100644 --- a/drivers/regulator/mt6397-regulator.c +++ b/drivers/regulator/mt6397-regulator.c @@ -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, ®val); + 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; @@ -160,7 +227,7 @@ static int mt6397_get_status(struct regulator_dev *rdev) return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF; } -static struct regulator_ops mt6397_volt_range_ops = { +static const struct regulator_ops mt6397_volt_range_ops = { .list_voltage = regulator_list_voltage_linear_range, .map_voltage = regulator_map_voltage_linear_range, .set_voltage_sel = regulator_set_voltage_sel_regmap, @@ -170,9 +237,11 @@ static 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 struct regulator_ops mt6397_volt_table_ops = { +static const struct regulator_ops mt6397_volt_table_ops = { .list_voltage = regulator_list_voltage_table, .map_voltage = regulator_map_voltage_iterate, .set_voltage_sel = regulator_set_voltage_sel_regmap, @@ -184,7 +253,7 @@ static struct regulator_ops mt6397_volt_table_ops = { .get_status = mt6397_get_status, }; -static struct regulator_ops mt6397_volt_fixed_ops = { +static const struct regulator_ops mt6397_volt_fixed_ops = { .list_voltage = regulator_list_voltage_linear, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, @@ -196,28 +265,30 @@ static 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, |