forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
494 lines
15 KiB
494 lines
15 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
// |
|
// Regulators driver for Dialog Semiconductor DA903x |
|
// |
|
// Copyright (C) 2006-2008 Marvell International Ltd. |
|
// Copyright (C) 2008 Compulab Ltd. |
|
|
|
#include <linux/kernel.h> |
|
#include <linux/init.h> |
|
#include <linux/err.h> |
|
#include <linux/module.h> |
|
#include <linux/platform_device.h> |
|
#include <linux/regulator/driver.h> |
|
#include <linux/regulator/machine.h> |
|
#include <linux/mfd/da903x.h> |
|
|
|
/* DA9030 Registers */ |
|
#define DA9030_INVAL (-1) |
|
#define DA9030_LDO1011 (0x10) |
|
#define DA9030_LDO15 (0x11) |
|
#define DA9030_LDO1416 (0x12) |
|
#define DA9030_LDO1819 (0x13) |
|
#define DA9030_LDO17 (0x14) |
|
#define DA9030_BUCK2DVM1 (0x15) |
|
#define DA9030_BUCK2DVM2 (0x16) |
|
#define DA9030_RCTL11 (0x17) |
|
#define DA9030_RCTL21 (0x18) |
|
#define DA9030_LDO1 (0x90) |
|
#define DA9030_LDO23 (0x91) |
|
#define DA9030_LDO45 (0x92) |
|
#define DA9030_LDO6 (0x93) |
|
#define DA9030_LDO78 (0x94) |
|
#define DA9030_LDO912 (0x95) |
|
#define DA9030_BUCK (0x96) |
|
#define DA9030_RCTL12 (0x97) |
|
#define DA9030_RCTL22 (0x98) |
|
#define DA9030_LDO_UNLOCK (0xa0) |
|
#define DA9030_LDO_UNLOCK_MASK (0xe0) |
|
#define DA9034_OVER1 (0x10) |
|
|
|
/* DA9034 Registers */ |
|
#define DA9034_INVAL (-1) |
|
#define DA9034_OVER2 (0x11) |
|
#define DA9034_OVER3 (0x12) |
|
#define DA9034_LDO643 (0x13) |
|
#define DA9034_LDO987 (0x14) |
|
#define DA9034_LDO1110 (0x15) |
|
#define DA9034_LDO1312 (0x16) |
|
#define DA9034_LDO1514 (0x17) |
|
#define DA9034_VCC1 (0x20) |
|
#define DA9034_ADTV1 (0x23) |
|
#define DA9034_ADTV2 (0x24) |
|
#define DA9034_AVRC (0x25) |
|
#define DA9034_CDTV1 (0x26) |
|
#define DA9034_CDTV2 (0x27) |
|
#define DA9034_CVRC (0x28) |
|
#define DA9034_SDTV1 (0x29) |
|
#define DA9034_SDTV2 (0x2a) |
|
#define DA9034_SVRC (0x2b) |
|
#define DA9034_MDTV1 (0x32) |
|
#define DA9034_MDTV2 (0x33) |
|
#define DA9034_MVRC (0x34) |
|
|
|
/* DA9035 Registers. DA9034 Registers are comptabile to DA9035. */ |
|
#define DA9035_OVER3 (0x12) |
|
#define DA9035_VCC2 (0x1f) |
|
#define DA9035_3DTV1 (0x2c) |
|
#define DA9035_3DTV2 (0x2d) |
|
#define DA9035_3VRC (0x2e) |
|
#define DA9035_AUTOSKIP (0x2f) |
|
|
|
struct da903x_regulator_info { |
|
struct regulator_desc desc; |
|
|
|
int max_uV; |
|
int vol_reg; |
|
int vol_shift; |
|
int vol_nbits; |
|
int update_reg; |
|
int update_bit; |
|
int enable_reg; |
|
int enable_bit; |
|
}; |
|
|
|
static inline struct device *to_da903x_dev(struct regulator_dev *rdev) |
|
{ |
|
return rdev_get_dev(rdev)->parent->parent; |
|
} |
|
|
|
static inline int check_range(struct da903x_regulator_info *info, |
|
int min_uV, int max_uV) |
|
{ |
|
if (min_uV < info->desc.min_uV || min_uV > info->max_uV) |
|
return -EINVAL; |
|
|
|
return 0; |
|
} |
|
|
|
/* DA9030/DA9034 common operations */ |
|
static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da9034_dev = to_da903x_dev(rdev); |
|
uint8_t val, mask; |
|
|
|
if (rdev->desc->n_voltages == 1) |
|
return -EINVAL; |
|
|
|
val = selector << info->vol_shift; |
|
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
|
|
|
return da903x_update(da9034_dev, info->vol_reg, val, mask); |
|
} |
|
|
|
static int da903x_get_voltage_sel(struct regulator_dev *rdev) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da9034_dev = to_da903x_dev(rdev); |
|
uint8_t val, mask; |
|
int ret; |
|
|
|
if (rdev->desc->n_voltages == 1) |
|
return 0; |
|
|
|
ret = da903x_read(da9034_dev, info->vol_reg, &val); |
|
if (ret) |
|
return ret; |
|
|
|
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
|
val = (val & mask) >> info->vol_shift; |
|
|
|
return val; |
|
} |
|
|
|
static int da903x_enable(struct regulator_dev *rdev) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da9034_dev = to_da903x_dev(rdev); |
|
|
|
return da903x_set_bits(da9034_dev, info->enable_reg, |
|
1 << info->enable_bit); |
|
} |
|
|
|
static int da903x_disable(struct regulator_dev *rdev) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da9034_dev = to_da903x_dev(rdev); |
|
|
|
return da903x_clr_bits(da9034_dev, info->enable_reg, |
|
1 << info->enable_bit); |
|
} |
|
|
|
static int da903x_is_enabled(struct regulator_dev *rdev) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da9034_dev = to_da903x_dev(rdev); |
|
uint8_t reg_val; |
|
int ret; |
|
|
|
ret = da903x_read(da9034_dev, info->enable_reg, ®_val); |
|
if (ret) |
|
return ret; |
|
|
|
return !!(reg_val & (1 << info->enable_bit)); |
|
} |
|
|
|
/* DA9030 specific operations */ |
|
static int da9030_set_ldo1_15_voltage_sel(struct regulator_dev *rdev, |
|
unsigned selector) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da903x_dev = to_da903x_dev(rdev); |
|
uint8_t val, mask; |
|
int ret; |
|
|
|
val = selector << info->vol_shift; |
|
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
|
val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */ |
|
mask |= DA9030_LDO_UNLOCK_MASK; |
|
|
|
/* write twice */ |
|
ret = da903x_update(da903x_dev, info->vol_reg, val, mask); |
|
if (ret) |
|
return ret; |
|
|
|
return da903x_update(da903x_dev, info->vol_reg, val, mask); |
|
} |
|
|
|
static int da9030_map_ldo14_voltage(struct regulator_dev *rdev, |
|
int min_uV, int max_uV) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
int thresh, sel; |
|
|
|
if (check_range(info, min_uV, max_uV)) { |
|
pr_err("invalid voltage range (%d, %d) uV\n", min_uV, max_uV); |
|
return -EINVAL; |
|
} |
|
|
|
thresh = (info->max_uV + info->desc.min_uV) / 2; |
|
if (min_uV < thresh) { |
|
sel = DIV_ROUND_UP(thresh - min_uV, info->desc.uV_step); |
|
sel |= 0x4; |
|
} else { |
|
sel = DIV_ROUND_UP(min_uV - thresh, info->desc.uV_step); |
|
} |
|
|
|
return sel; |
|
} |
|
|
|
static int da9030_list_ldo14_voltage(struct regulator_dev *rdev, |
|
unsigned selector) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
int volt; |
|
|
|
if (selector & 0x4) |
|
volt = rdev->desc->min_uV + |
|
rdev->desc->uV_step * (3 - (selector & ~0x4)); |
|
else |
|
volt = (info->max_uV + rdev->desc->min_uV) / 2 + |
|
rdev->desc->uV_step * (selector & ~0x4); |
|
|
|
if (volt > info->max_uV) |
|
return -EINVAL; |
|
|
|
return volt; |
|
} |
|
|
|
/* DA9034 specific operations */ |
|
static int da9034_set_dvc_voltage_sel(struct regulator_dev *rdev, |
|
unsigned selector) |
|
{ |
|
struct da903x_regulator_info *info = rdev_get_drvdata(rdev); |
|
struct device *da9034_dev = to_da903x_dev(rdev); |
|
uint8_t val, mask; |
|
int ret; |
|
|
|
val = selector << info->vol_shift; |
|
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; |
|
|
|
ret = da903x_update(da9034_dev, info->vol_reg, val, mask); |
|
if (ret) |
|
return ret; |
|
|
|
ret = da903x_set_bits(da9034_dev, info->update_reg, |
|
1 << info->update_bit); |
|
return ret; |
|
} |
|
|
|
static const struct linear_range da9034_ldo12_ranges[] = { |
|
REGULATOR_LINEAR_RANGE(1700000, 0, 7, 50000), |
|
REGULATOR_LINEAR_RANGE(2700000, 8, 15, 50000), |
|
}; |
|
|
|
static const struct regulator_ops da903x_regulator_ldo_ops = { |
|
.set_voltage_sel = da903x_set_voltage_sel, |
|
.get_voltage_sel = da903x_get_voltage_sel, |
|
.list_voltage = regulator_list_voltage_linear, |
|
.map_voltage = regulator_map_voltage_linear, |
|
.enable = da903x_enable, |
|
.disable = da903x_disable, |
|
.is_enabled = da903x_is_enabled, |
|
}; |
|
|
|
/* NOTE: this is dedicated for the insane DA9030 LDO14 */ |
|
static const struct regulator_ops da9030_regulator_ldo14_ops = { |
|
.set_voltage_sel = da903x_set_voltage_sel, |
|
.get_voltage_sel = da903x_get_voltage_sel, |
|
.list_voltage = da9030_list_ldo14_voltage, |
|
.map_voltage = da9030_map_ldo14_voltage, |
|
.enable = da903x_enable, |
|
.disable = da903x_disable, |
|
.is_enabled = da903x_is_enabled, |
|
}; |
|
|
|
/* NOTE: this is dedicated for the DA9030 LDO1 and LDO15 that have locks */ |
|
static const struct regulator_ops da9030_regulator_ldo1_15_ops = { |
|
.set_voltage_sel = da9030_set_ldo1_15_voltage_sel, |
|
.get_voltage_sel = da903x_get_voltage_sel, |
|
.list_voltage = regulator_list_voltage_linear, |
|
.map_voltage = regulator_map_voltage_linear, |
|
.enable = da903x_enable, |
|
.disable = da903x_disable, |
|
.is_enabled = da903x_is_enabled, |
|
}; |
|
|
|
static const struct regulator_ops da9034_regulator_dvc_ops = { |
|
.set_voltage_sel = da9034_set_dvc_voltage_sel, |
|
.get_voltage_sel = da903x_get_voltage_sel, |
|
.list_voltage = regulator_list_voltage_linear, |
|
.map_voltage = regulator_map_voltage_linear, |
|
.enable = da903x_enable, |
|
.disable = da903x_disable, |
|
.is_enabled = da903x_is_enabled, |
|
}; |
|
|
|
/* NOTE: this is dedicated for the insane LDO12 */ |
|
static const struct regulator_ops da9034_regulator_ldo12_ops = { |
|
.set_voltage_sel = da903x_set_voltage_sel, |
|
.get_voltage_sel = da903x_get_voltage_sel, |
|
.list_voltage = regulator_list_voltage_linear_range, |
|
.map_voltage = regulator_map_voltage_linear_range, |
|
.enable = da903x_enable, |
|
.disable = da903x_disable, |
|
.is_enabled = da903x_is_enabled, |
|
}; |
|
|
|
#define DA903x_LDO(_pmic, _id, min, max, step, vreg, shift, nbits, ereg, ebit) \ |
|
{ \ |
|
.desc = { \ |
|
.name = "LDO" #_id, \ |
|
.ops = &da903x_regulator_ldo_ops, \ |
|
.type = REGULATOR_VOLTAGE, \ |
|
.id = _pmic##_ID_LDO##_id, \ |
|
.n_voltages = (step) ? ((max - min) / step + 1) : 1, \ |
|
.owner = THIS_MODULE, \ |
|
.min_uV = (min) * 1000, \ |
|
.uV_step = (step) * 1000, \ |
|
}, \ |
|
.max_uV = (max) * 1000, \ |
|
.vol_reg = _pmic##_##vreg, \ |
|
.vol_shift = (shift), \ |
|
.vol_nbits = (nbits), \ |
|
.enable_reg = _pmic##_##ereg, \ |
|
.enable_bit = (ebit), \ |
|
} |
|
|
|
#define DA903x_DVC(_pmic, _id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
|
{ \ |
|
.desc = { \ |
|
.name = #_id, \ |
|
.ops = &da9034_regulator_dvc_ops, \ |
|
.type = REGULATOR_VOLTAGE, \ |
|
.id = _pmic##_ID_##_id, \ |
|
.n_voltages = (step) ? ((max - min) / step + 1) : 1, \ |
|
.owner = THIS_MODULE, \ |
|
.min_uV = (min) * 1000, \ |
|
.uV_step = (step) * 1000, \ |
|
}, \ |
|
.max_uV = (max) * 1000, \ |
|
.vol_reg = _pmic##_##vreg, \ |
|
.vol_shift = (0), \ |
|
.vol_nbits = (nbits), \ |
|
.update_reg = _pmic##_##ureg, \ |
|
.update_bit = (ubit), \ |
|
.enable_reg = _pmic##_##ereg, \ |
|
.enable_bit = (ebit), \ |
|
} |
|
|
|
#define DA9034_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ |
|
DA903x_LDO(DA9034, _id, min, max, step, vreg, shift, nbits, ereg, ebit) |
|
|
|
#define DA9030_LDO(_id, min, max, step, vreg, shift, nbits, ereg, ebit) \ |
|
DA903x_LDO(DA9030, _id, min, max, step, vreg, shift, nbits, ereg, ebit) |
|
|
|
#define DA9030_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
|
DA903x_DVC(DA9030, _id, min, max, step, vreg, nbits, ureg, ubit, \ |
|
ereg, ebit) |
|
|
|
#define DA9034_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
|
DA903x_DVC(DA9034, _id, min, max, step, vreg, nbits, ureg, ubit, \ |
|
ereg, ebit) |
|
|
|
#define DA9035_DVC(_id, min, max, step, vreg, nbits, ureg, ubit, ereg, ebit) \ |
|
DA903x_DVC(DA9035, _id, min, max, step, vreg, nbits, ureg, ubit, \ |
|
ereg, ebit) |
|
|
|
static struct da903x_regulator_info da903x_regulator_info[] = { |
|
/* DA9030 */ |
|
DA9030_DVC(BUCK2, 850, 1625, 25, BUCK2DVM1, 5, BUCK2DVM1, 7, RCTL11, 0), |
|
|
|
DA9030_LDO( 1, 1200, 3200, 100, LDO1, 0, 5, RCTL12, 1), |
|
DA9030_LDO( 2, 1800, 3200, 100, LDO23, 0, 4, RCTL12, 2), |
|
DA9030_LDO( 3, 1800, 3200, 100, LDO23, 4, 4, RCTL12, 3), |
|
DA9030_LDO( 4, 1800, 3200, 100, LDO45, 0, 4, RCTL12, 4), |
|
DA9030_LDO( 5, 1800, 3200, 100, LDO45, 4, 4, RCTL12, 5), |
|
DA9030_LDO( 6, 1800, 3200, 100, LDO6, 0, 4, RCTL12, 6), |
|
DA9030_LDO( 7, 1800, 3200, 100, LDO78, 0, 4, RCTL12, 7), |
|
DA9030_LDO( 8, 1800, 3200, 100, LDO78, 4, 4, RCTL22, 0), |
|
DA9030_LDO( 9, 1800, 3200, 100, LDO912, 0, 4, RCTL22, 1), |
|
DA9030_LDO(10, 1800, 3200, 100, LDO1011, 0, 4, RCTL22, 2), |
|
DA9030_LDO(11, 1800, 3200, 100, LDO1011, 4, 4, RCTL22, 3), |
|
DA9030_LDO(12, 1800, 3200, 100, LDO912, 4, 4, RCTL22, 4), |
|
DA9030_LDO(14, 2760, 2940, 30, LDO1416, 0, 3, RCTL11, 4), |
|
DA9030_LDO(15, 1100, 2650, 50, LDO15, 0, 5, RCTL11, 5), |
|
DA9030_LDO(16, 1100, 2650, 50, LDO1416, 3, 5, RCTL11, 6), |
|
DA9030_LDO(17, 1800, 3200, 100, LDO17, 0, 4, RCTL11, 7), |
|
DA9030_LDO(18, 1800, 3200, 100, LDO1819, 0, 4, RCTL21, 2), |
|
DA9030_LDO(19, 1800, 3200, 100, LDO1819, 4, 4, RCTL21, 1), |
|
DA9030_LDO(13, 2100, 2100, 0, INVAL, 0, 0, RCTL11, 3), /* fixed @2.1V */ |
|
|
|
/* DA9034 */ |
|
DA9034_DVC(BUCK1, 725, 1500, 25, ADTV2, 5, VCC1, 0, OVER1, 0), |
|
DA9034_DVC(BUCK2, 725, 1500, 25, CDTV2, 5, VCC1, 2, OVER1, 1), |
|
DA9034_DVC(LDO2, 725, 1500, 25, SDTV2, 5, VCC1, 4, OVER1, 2), |
|
DA9034_DVC(LDO1, 1700, 2075, 25, MDTV1, 4, VCC1, 6, OVER3, 4), |
|
|
|
DA9034_LDO( 3, 1800, 3300, 100, LDO643, 0, 4, OVER3, 5), |
|
DA9034_LDO( 4, 1800, 2900,1100, LDO643, 4, 1, OVER3, 6), |
|
DA9034_LDO( 6, 2500, 2850, 50, LDO643, 5, 3, OVER2, 0), |
|
DA9034_LDO( 7, 2700, 3050, 50, LDO987, 0, 3, OVER2, 1), |
|
DA9034_LDO( 8, 2700, 2850, 50, LDO987, 3, 2, OVER2, 2), |
|
DA9034_LDO( 9, 2700, 3050, 50, LDO987, 5, 3, OVER2, 3), |
|
DA9034_LDO(10, 2700, 3050, 50, LDO1110, 0, 3, OVER2, 4), |
|
DA9034_LDO(11, 1800, 3300, 100, LDO1110, 4, 4, OVER2, 5), |
|
DA9034_LDO(12, 1700, 3050, 50, LDO1312, 0, 4, OVER3, 6), |
|
DA9034_LDO(13, 1800, 3300, 100, LDO1312, 4, 4, OVER2, 7), |
|
DA9034_LDO(14, 1800, 3300, 100, LDO1514, 0, 4, OVER3, 0), |
|
DA9034_LDO(15, 1800, 3300, 100, LDO1514, 4, 4, OVER3, 1), |
|
DA9034_LDO(5, 3100, 3100, 0, INVAL, 0, 0, OVER3, 7), /* fixed @3.1V */ |
|
|
|
/* DA9035 */ |
|
DA9035_DVC(BUCK3, 1800, 2200, 100, 3DTV1, 3, VCC2, 0, OVER3, 3), |
|
}; |
|
|
|
static inline struct da903x_regulator_info *find_regulator_info(int id) |
|
{ |
|
struct da903x_regulator_info *ri; |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(da903x_regulator_info); i++) { |
|
ri = &da903x_regulator_info[i]; |
|
if (ri->desc.id == id) |
|
return ri; |
|
} |
|
return NULL; |
|
} |
|
|
|
static int da903x_regulator_probe(struct platform_device *pdev) |
|
{ |
|
struct da903x_regulator_info *ri = NULL; |
|
struct regulator_dev *rdev; |
|
struct regulator_config config = { }; |
|
|
|
ri = find_regulator_info(pdev->id); |
|
if (ri == NULL) { |
|
dev_err(&pdev->dev, "invalid regulator ID specified\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* Workaround for the weird LDO12 voltage setting */ |
|
if (ri->desc.id == DA9034_ID_LDO12) { |
|
ri->desc.ops = &da9034_regulator_ldo12_ops; |
|
ri->desc.n_voltages = 16; |
|
ri->desc.linear_ranges = da9034_ldo12_ranges; |
|
ri->desc.n_linear_ranges = ARRAY_SIZE(da9034_ldo12_ranges); |
|
} |
|
|
|
if (ri->desc.id == DA9030_ID_LDO14) |
|
ri->desc.ops = &da9030_regulator_ldo14_ops; |
|
|
|
if (ri->desc.id == DA9030_ID_LDO1 || ri->desc.id == DA9030_ID_LDO15) |
|
ri->desc.ops = &da9030_regulator_ldo1_15_ops; |
|
|
|
config.dev = &pdev->dev; |
|
config.init_data = dev_get_platdata(&pdev->dev); |
|
config.driver_data = ri; |
|
|
|
rdev = devm_regulator_register(&pdev->dev, &ri->desc, &config); |
|
if (IS_ERR(rdev)) { |
|
dev_err(&pdev->dev, "failed to register regulator %s\n", |
|
ri->desc.name); |
|
return PTR_ERR(rdev); |
|
} |
|
|
|
platform_set_drvdata(pdev, rdev); |
|
return 0; |
|
} |
|
|
|
static struct platform_driver da903x_regulator_driver = { |
|
.driver = { |
|
.name = "da903x-regulator", |
|
}, |
|
.probe = da903x_regulator_probe, |
|
}; |
|
|
|
static int __init da903x_regulator_init(void) |
|
{ |
|
return platform_driver_register(&da903x_regulator_driver); |
|
} |
|
subsys_initcall(da903x_regulator_init); |
|
|
|
static void __exit da903x_regulator_exit(void) |
|
{ |
|
platform_driver_unregister(&da903x_regulator_driver); |
|
} |
|
module_exit(da903x_regulator_exit); |
|
|
|
MODULE_LICENSE("GPL"); |
|
MODULE_AUTHOR("Eric Miao <[email protected]>" |
|
"Mike Rapoport <[email protected]>"); |
|
MODULE_DESCRIPTION("Regulator Driver for Dialog Semiconductor DA903X PMIC"); |
|
MODULE_ALIAS("platform:da903x-regulator");
|
|
|