#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/mt6397/core.h>
#include <linux/mfd/mt6357/registers.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/mt6357-regulator.h>
#include <linux/regulator/of_regulator.h>
struct mt6357_regulator_info {
struct regulator_desc desc;
u32 da_vsel_reg;
u32 da_vsel_mask;
};
#define MT6357_BUCK(match, vreg, min, max, step, \
volt_ranges, vosel_reg, vosel_mask, _da_vsel_mask) \
[MT6357_ID_##vreg] = { \
.desc = { \
.name = #vreg, \
.of_match = of_match_ptr(match), \
.regulators_node = "regulators", \
.ops = &mt6357_volt_range_ops, \
.type = REGULATOR_VOLTAGE, \
.id = MT6357_ID_##vreg, \
.owner = THIS_MODULE, \
.n_voltages = ((max) - (min)) / (step) + 1, \
.linear_ranges = volt_ranges, \
.n_linear_ranges = ARRAY_SIZE(volt_ranges), \
.vsel_reg = vosel_reg, \
.vsel_mask = vosel_mask, \
.enable_reg = MT6357_BUCK_##vreg##_CON0, \
.enable_mask = BIT(0), \
}, \
.da_vsel_reg = MT6357_BUCK_##vreg##_DBG0, \
.da_vsel_mask = vosel_mask, \
}
#define MT6357_LDO(match, vreg, ldo_volt_table, \
enreg, vosel, vosel_mask) \
[MT6357_ID_##vreg] = { \
.desc = { \
.name = #vreg, \
.of_match = of_match_ptr(match), \
.regulators_node = "regulators", \
.ops = &mt6357_volt_table_ops, \
.type = REGULATOR_VOLTAGE, \
.id = MT6357_ID_##vreg, \
.owner = THIS_MODULE, \
.n_voltages = ARRAY_SIZE(ldo_volt_table), \
.volt_table = ldo_volt_table, \
.vsel_reg = vosel, \
.vsel_mask = vosel_mask, \
.enable_reg = enreg, \
.enable_mask = BIT(0), \
}, \
}
#define MT6357_LDO1(match, vreg, min, max, step, volt_ranges, \
enreg, vosel, vosel_mask) \
[MT6357_ID_##vreg] = { \
.desc = { \
.name = #vreg, \
.of_match = of_match_ptr(match), \
.regulators_node = "regulators", \
.ops = &mt6357_volt_range_ops, \
.type = REGULATOR_VOLTAGE, \
.id = MT6357_ID_##vreg, \
.owner = THIS_MODULE, \
.n_voltages = ((max) - (min)) / (step) + 1, \
.linear_ranges = volt_ranges, \
.n_linear_ranges = ARRAY_SIZE(volt_ranges), \
.vsel_reg = vosel, \
.vsel_mask = vosel_mask, \
.enable_reg = enreg, \
.enable_mask = BIT(0), \
}, \
.da_vsel_reg = MT6357_LDO_##vreg##_DBG0, \
.da_vsel_mask = 0x7f00, \
}
#define MT6357_REG_FIXED(match, vreg, volt) \
[MT6357_ID_##vreg] = { \
.desc = { \
.name = #vreg, \
.of_match = of_match_ptr(match), \
.regulators_node = "regulators", \
.ops = &mt6357_volt_fixed_ops, \
.type = REGULATOR_VOLTAGE, \
.id = MT6357_ID_##vreg, \
.owner = THIS_MODULE, \
.n_voltages = 1, \
.enable_reg = MT6357_LDO_##vreg##_CON0, \
.enable_mask = BIT(0), \
.min_uV = volt, \
}, \
}
static int mt6357_get_buck_voltage_sel(struct regulator_dev *rdev)
{
int ret, regval;
struct mt6357_regulator_info *info = rdev_get_drvdata(rdev);
ret = regmap_read(rdev->regmap, info->da_vsel_reg, ®val);
if (ret != 0) {
dev_err(&rdev->dev,
"Failed to get mt6357 Buck %s vsel reg: %d\n",
info->desc.name, ret);
return ret;
}
regval &= info->da_vsel_mask;
regval >>= ffs(info->da_vsel_mask) - 1;
return regval;
}
static const struct regulator_ops mt6357_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,
.get_voltage_sel = mt6357_get_buck_voltage_sel,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const struct regulator_ops mt6357_volt_table_ops = {
.list_voltage = regulator_list_voltage_table,
.map_voltage = regulator_map_voltage_iterate,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const struct regulator_ops mt6357_volt_fixed_ops = {
.list_voltage = regulator_list_voltage_linear,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
};
static const int vxo22_voltages[] = {
2200000,
0,
2400000,
};
static const int vefuse_voltages[] = {
1200000,
1300000,
1500000,
0,
1800000,
0,
0,
0,
0,
2800000,
2900000,
3000000,
0,
3300000,
};
static const int vcn33_voltages[] = {
0,
3300000,
3400000,
3500000,
};
static const int vcama_voltages[] = {
0,
0,
0,
0,
0,
0,
0,
2500000,
0,
0,
2800000,
};
static const int vcamd_voltages[] = {
0,
0,
0,
0,
1000000,
1100000,
1200000,
1300000,
0,
1500000,
0,
0,
1800000,
};
static const int vldo28_voltages[] = {
0,
2800000,
0,
3000000,
};
static const int vdram_voltages[] = {
0,
1100000,
1200000,
};
static const int vsim_voltages[] = {
0,
0,
0,
1700000,
1800000,
0,
0,
0,
2700000,
0,
0,
3000000,
3100000,
};
static const int vibr_voltages[] = {
1200000,
1300000,
1500000,
0,
1800000,
2000000,
0,
0,
0,
2800000,
0,
3000000,
0,
3300000,
};
static const int vmc_voltages[] = {
0,
0,
0,
0,
1800000,
0,
0,
0,
0,
0,
2900000,
3000000,
0,
3300000,
};
static const int vmch_voltages[] = {
0,
0,
2900000,
3000000,
0,
3300000,
};
static const int vemc_voltages[] = {
0,
0,
2900000,
3000000,
0,
3300000,
};
static const int vusb_voltages[] = {
0,
0,
0,
3000000,
3100000,
};
static const struct linear_range buck_volt_range1[] = {
REGULATOR_LINEAR_RANGE(518750, 0, 0x7f, 6250),
};
static const struct linear_range buck_volt_range2[] = {
REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250),
};
static const struct linear_range buck_volt_range3[] = {
REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),
};
static const struct linear_range buck_volt_range4[] = {
REGULATOR_LINEAR_RANGE(1200000, 0, 0x7f, 12500),
};
static struct mt6357_regulator_info mt6357_regulators[] = {
MT6357_BUCK("buck-vcore", VCORE, 518750, 1312500, 6250,
buck_volt_range1, MT6357_BUCK_VCORE_ELR0, 0x7f, 0x7f),
MT6357_BUCK("buck-vproc", VPROC, 518750, 1312500, 6250,
buck_volt_range1, MT6357_BUCK_VPROC_ELR0, 0x7f, 0x7f),
MT6357_BUCK("buck-vmodem", VMODEM, 500000, 1293750, 6250,
buck_volt_range2, MT6357_BUCK_VMODEM_ELR0, 0x7f, 0x7f),
MT6357_BUCK("buck-vpa", VPA, 500000, 3650000, 50000,
buck_volt_range3, MT6357_BUCK_VPA_CON1, 0x3f, 0x3f),
MT6357_BUCK("buck-vs1", VS1, 1200000, 2787500, 12500,
buck_volt_range4, MT6357_BUCK_VS1_ELR0, 0x7f, 0x7f),
MT6357_LDO("ldo-vcama", VCAMA, vcama_voltages,
MT6357_LDO_VCAMA_CON0, MT6357_VCAMA_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vcamd", VCAMD, vcamd_voltages,
MT6357_LDO_VCAMD_CON0, MT6357_VCAMD_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vcn33-bt", VCN33_BT, vcn33_voltages,
MT6357_LDO_VCN33_CON0_0, MT6357_VCN33_ANA_CON0, 0x300),
MT6357_LDO("ldo-vcn33-wifi", VCN33_WIFI, vcn33_voltages,
MT6357_LDO_VCN33_CON0_1, MT6357_VCN33_ANA_CON0, 0x300),
MT6357_LDO("ldo-vdram", VDRAM, vdram_voltages,
MT6357_LDO_VDRAM_CON0, MT6357_VDRAM_ELR_2, 0x300),
MT6357_LDO("ldo-vefuse", VEFUSE, vefuse_voltages,
MT6357_LDO_VEFUSE_CON0, MT6357_VEFUSE_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vemc", VEMC, vemc_voltages,
MT6357_LDO_VEMC_CON0, MT6357_VEMC_ANA_CON0, 0x700),
MT6357_LDO("ldo-vibr", VIBR, vibr_voltages,
MT6357_LDO_VIBR_CON0, MT6357_VIBR_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vldo28", VLDO28, vldo28_voltages,
MT6357_LDO_VLDO28_CON0_0, MT6357_VLDO28_ANA_CON0, 0x300),
MT6357_LDO("ldo-vmc", VMC, vmc_voltages,
MT6357_LDO_VMC_CON0, MT6357_VMC_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vmch", VMCH, vmch_voltages,
MT6357_LDO_VMCH_CON0, MT6357_VMCH_ANA_CON0, 0x700),
MT6357_LDO("ldo-vsim1", VSIM1, vsim_voltages,
MT6357_LDO_VSIM1_CON0, MT6357_VSIM1_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vsim2", VSIM2, vsim_voltages,
MT6357_LDO_VSIM2_CON0, MT6357_VSIM2_ANA_CON0, 0xf00),
MT6357_LDO("ldo-vusb33", VUSB33, vusb_voltages,
MT6357_LDO_VUSB33_CON0_0, MT6357_VUSB33_ANA_CON0, 0x700),
MT6357_LDO("ldo-vxo22", VXO22, vxo22_voltages,
MT6357_LDO_VXO22_CON0, MT6357_VXO22_ANA_CON0, 0x300),
MT6357_LDO1("ldo-vsram-proc", VSRAM_PROC, 518750, 1312500, 6250,
buck_volt_range1, MT6357_LDO_VSRAM_PROC_CON0,
MT6357_LDO_VSRAM_CON0, 0x7f00),
MT6357_LDO1("ldo-vsram-others", VSRAM_OTHERS, 518750, 1312500, 6250,
buck_volt_range1, MT6357_LDO_VSRAM_OTHERS_CON0,
MT6357_LDO_VSRAM_CON1, 0x7f00),
MT6357_REG_FIXED("ldo-vaud28", VAUD28, 2800000),
MT6357_REG_FIXED("ldo-vaux18", VAUX18, 1800000),
MT6357_REG_FIXED("ldo-vcamio18", VCAMIO, 1800000),
MT6357_REG_FIXED("ldo-vcn18", VCN18, 1800000),
MT6357_REG_FIXED("ldo-vcn28", VCN28, 2800000),
MT6357_REG_FIXED("ldo-vfe28", VFE28, 2800000),
MT6357_REG_FIXED("ldo-vio18", VIO18, 1800000),
MT6357_REG_FIXED("ldo-vio28", VIO28, 2800000),
MT6357_REG_FIXED("ldo-vrf12", VRF12, 1200000),
MT6357_REG_FIXED("ldo-vrf18", VRF18, 1800000),
};
static int mt6357_regulator_probe(struct platform_device *pdev)
{
struct mt6397_chip *mt6357 = dev_get_drvdata(pdev->dev.parent);
struct regulator_config config = {};
struct regulator_dev *rdev;
int i;
pdev->dev.of_node = pdev->dev.parent->of_node;
for (i = 0; i < MT6357_MAX_REGULATOR; i++) {
config.dev = &pdev->dev;
config.driver_data = &mt6357_regulators[i];
config.regmap = mt6357->regmap;
rdev = devm_regulator_register(&pdev->dev,
&mt6357_regulators[i].desc,
&config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s\n",
mt6357_regulators[i].desc.name);
return PTR_ERR(rdev);
}
}
return 0;
}
static const struct platform_device_id mt6357_platform_ids[] = {
{ "mt6357-regulator" },
{ },
};
MODULE_DEVICE_TABLE(platform, mt6357_platform_ids);
static struct platform_driver mt6357_regulator_driver = {
.driver = {
.name = "mt6357-regulator",
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
.probe = mt6357_regulator_probe,
.id_table = mt6357_platform_ids,
};
module_platform_driver(mt6357_regulator_driver);
MODULE_AUTHOR("Chen Zhong <chen.zhong@mediatek.com>");
MODULE_AUTHOR("Fabien Parent <fabien.parent@linaro.org>");
MODULE_AUTHOR("Alexandre Mergnat <amergnat@baylibre.com>");
MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6357 PMIC");
MODULE_LICENSE("GPL");
