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regulator: rk808: Add regulator driver for RK805 

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>
hifive-unleashed-5.1
Elaine Zhang 2017-08-21 03:28:36 +02:00 committed by Lee Jones
parent a5247ca670
commit c4e0d344c1
2 changed files with 132 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/regulator/Kconfig
View File

@ -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.

130
drivers/regulator/rk808-regulator.c
View File

@ -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] = { \
@ -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;
@ -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,
@ -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",
@ -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;