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regulator: rk808: Add regulator driver for RK805
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Add support for the rk805 regulator. The regulator module consists
of 4 DCDCs, 3 LDOs.

The output voltages are configurable and are meant to supply power
to the main processor and other components.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Elaine Zhang authored and Lee Jones committed Aug 21, 2017
1 parent a5247ca commit c4e0d34
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Showing 2 changed files with 132 additions and 2 deletions.
4 changes: 2 additions & 2 deletions drivers/regulator/Kconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -687,11 +687,11 @@ config REGULATOR_RC5T583
outputs which can be controlled by i2c communication.

config REGULATOR_RK808
tristate "Rockchip RK808/RK818 Power regulators"
tristate "Rockchip RK805/RK808/RK818 Power regulators"
depends on MFD_RK808
help
Select this option to enable the power regulator of ROCKCHIP
PMIC RK808 and RK818.
PMIC RK805,RK808 and RK818.
This driver supports the control of different power rails of device
through regulator interface. The device supports multiple DCDC/LDO
outputs which can be controlled by i2c communication.
Expand Down
130 changes: 130 additions & 0 deletions drivers/regulator/rk808-regulator.c
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Original file line number Diff line number Diff line change
Expand Up @@ -65,6 +65,27 @@
/* max steps for increase voltage of Buck1/2, equal 100mv*/
#define MAX_STEPS_ONE_TIME 8

#define RK805_DESC(_id, _match, _supply, _min, _max, _step, _vreg, \
_vmask, _ereg, _emask, _etime) \
[_id] = { \
.name = (_match), \
.supply_name = (_supply), \
.of_match = of_match_ptr(_match), \
.regulators_node = of_match_ptr("regulators"), \
.type = REGULATOR_VOLTAGE, \
.id = (_id), \
.n_voltages = (((_max) - (_min)) / (_step) + 1), \
.owner = THIS_MODULE, \
.min_uV = (_min) * 1000, \
.uV_step = (_step) * 1000, \
.vsel_reg = (_vreg), \
.vsel_mask = (_vmask), \
.enable_reg = (_ereg), \
.enable_mask = (_emask), \
.enable_time = (_etime), \
.ops = &rk805_reg_ops, \
}

#define RK8XX_DESC(_id, _match, _supply, _min, _max, _step, _vreg, \
_vmask, _ereg, _emask, _etime) \
[_id] = { \
Expand Down Expand Up @@ -298,6 +319,28 @@ static int rk808_set_suspend_voltage_range(struct regulator_dev *rdev, int uv)
sel);
}

static int rk805_set_suspend_enable(struct regulator_dev *rdev)
{
unsigned int reg;

reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET;

return regmap_update_bits(rdev->regmap, reg,
rdev->desc->enable_mask,
rdev->desc->enable_mask);
}

static int rk805_set_suspend_disable(struct regulator_dev *rdev)
{
unsigned int reg;

reg = rdev->desc->enable_reg + RK808_SLP_SET_OFF_REG_OFFSET;

return regmap_update_bits(rdev->regmap, reg,
rdev->desc->enable_mask,
0);
}

static int rk808_set_suspend_enable(struct regulator_dev *rdev)
{
unsigned int reg;
Expand All @@ -320,6 +363,27 @@ static int rk808_set_suspend_disable(struct regulator_dev *rdev)
rdev->desc->enable_mask);
}

static struct regulator_ops rk805_reg_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_suspend_voltage = rk808_set_suspend_voltage,
.set_suspend_enable = rk805_set_suspend_enable,
.set_suspend_disable = rk805_set_suspend_disable,
};

static struct regulator_ops rk805_switch_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.set_suspend_enable = rk805_set_suspend_enable,
.set_suspend_disable = rk805_set_suspend_disable,
};

static struct regulator_ops rk808_buck1_2_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
Expand Down Expand Up @@ -369,6 +433,68 @@ static struct regulator_ops rk808_switch_ops = {
.set_suspend_disable = rk808_set_suspend_disable,
};

static const struct regulator_desc rk805_reg[] = {
{
.name = "DCDC_REG1",
.supply_name = "vcc1",
.of_match = of_match_ptr("DCDC_REG1"),
.regulators_node = of_match_ptr("regulators"),
.id = RK805_ID_DCDC1,
.ops = &rk805_reg_ops,
.type = REGULATOR_VOLTAGE,
.min_uV = 712500,
.uV_step = 12500,
.n_voltages = 64,
.vsel_reg = RK805_BUCK1_ON_VSEL_REG,
.vsel_mask = RK818_BUCK_VSEL_MASK,
.enable_reg = RK805_DCDC_EN_REG,
.enable_mask = BIT(0),
.owner = THIS_MODULE,
}, {
.name = "DCDC_REG2",
.supply_name = "vcc2",
.of_match = of_match_ptr("DCDC_REG2"),
.regulators_node = of_match_ptr("regulators"),
.id = RK805_ID_DCDC2,
.ops = &rk805_reg_ops,
.type = REGULATOR_VOLTAGE,
.min_uV = 712500,
.uV_step = 12500,
.n_voltages = 64,
.vsel_reg = RK805_BUCK2_ON_VSEL_REG,
.vsel_mask = RK818_BUCK_VSEL_MASK,
.enable_reg = RK805_DCDC_EN_REG,
.enable_mask = BIT(1),
.owner = THIS_MODULE,
}, {
.name = "DCDC_REG3",
.supply_name = "vcc3",
.of_match = of_match_ptr("DCDC_REG3"),
.regulators_node = of_match_ptr("regulators"),
.id = RK805_ID_DCDC3,
.ops = &rk805_switch_ops,
.type = REGULATOR_VOLTAGE,
.n_voltages = 1,
.enable_reg = RK805_DCDC_EN_REG,
.enable_mask = BIT(2),
.owner = THIS_MODULE,
},

RK805_DESC(RK805_ID_DCDC4, "DCDC_REG4", "vcc4", 800, 3400, 100,
RK805_BUCK4_ON_VSEL_REG, RK818_BUCK4_VSEL_MASK,
RK805_DCDC_EN_REG, BIT(3), 0),

RK805_DESC(RK805_ID_LDO1, "LDO_REG1", "vcc5", 800, 3400, 100,
RK805_LDO1_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK805_LDO_EN_REG,
BIT(0), 400),
RK805_DESC(RK805_ID_LDO2, "LDO_REG2", "vcc5", 800, 3400, 100,
RK805_LDO2_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK805_LDO_EN_REG,
BIT(1), 400),
RK805_DESC(RK805_ID_LDO3, "LDO_REG3", "vcc6", 800, 3400, 100,
RK805_LDO3_ON_VSEL_REG, RK818_LDO_VSEL_MASK, RK805_LDO_EN_REG,
BIT(2), 400),
};

static const struct regulator_desc rk808_reg[] = {
{
.name = "DCDC_REG1",
Expand Down Expand Up @@ -625,6 +751,10 @@ static int rk808_regulator_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pdata);

switch (rk808->variant) {
case RK805_ID:
regulators = rk805_reg;
nregulators = RK805_NUM_REGULATORS;
break;
case RK808_ID:
regulators = rk808_reg;
nregulators = RK808_NUM_REGULATORS;
Expand Down

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