diff options
Diffstat (limited to 'drivers/regulator/rtq2208-regulator.c')
| -rw-r--r-- | drivers/regulator/rtq2208-regulator.c | 297 |
1 files changed, 191 insertions, 106 deletions
diff --git a/drivers/regulator/rtq2208-regulator.c b/drivers/regulator/rtq2208-regulator.c index 2d54844c4226..9cde7181b0f0 100644 --- a/drivers/regulator/rtq2208-regulator.c +++ b/drivers/regulator/rtq2208-regulator.c @@ -26,6 +26,12 @@ #define RTQ2208_REG_BUCK_H_CFG0 0xA2 #define RTQ2208_REG_LDO1_CFG 0xB1 #define RTQ2208_REG_LDO2_CFG 0xC1 +#define RTQ2208_REG_LDO_DVS_CTRL 0xD0 +#define RTQ2208_REG_HIDDEN_BUCKPH 0x55 +#define RTQ2208_REG_HIDDEN_LDOCFG0 0x8F +#define RTQ2208_REG_HIDDEN_LDOCFG1 0x96 +#define RTQ2208_REG_HIDDEN0 0xFE +#define RTQ2208_REG_HIDDEN1 0xFF /* Mask */ #define RTQ2208_BUCK_NR_MTP_SEL_MASK GENMASK(7, 0) @@ -40,6 +46,15 @@ #define RTQ2208_EN_DIS_MASK BIT(0) #define RTQ2208_BUCK_RAMP_SEL_MASK GENMASK(2, 0) #define RTQ2208_HD_INT_MASK BIT(0) +#define RTQ2208_LDO1_DISCHG_EN_MASK BIT(4) +#define RTQ2208_LDO1_VOSEL_SD_MASK BIT(5) +#define RTQ2208_LDO2_DISCHG_EN_MASK BIT(6) +#define RTQ2208_LDO2_VOSEL_SD_MASK BIT(7) +#define RTQ2208_MASK_BUCKPH_GROUP1 GENMASK(6, 4) +#define RTQ2208_MASK_BUCKPH_GROUP2 GENMASK(2, 0) +#define RTQ2208_MASK_LDO2_OPT0 BIT(7) +#define RTQ2208_MASK_LDO2_OPT1 BIT(6) +#define RTQ2208_MASK_LDO1_FIXED BIT(6) /* Size */ #define RTQ2208_VOUT_MAXNUM 256 @@ -48,7 +63,7 @@ /* Value */ #define RTQ2208_RAMP_VALUE_MIN_uV 500 -#define RTQ2208_RAMP_VALUE_MAX_uV 64000 +#define RTQ2208_RAMP_VALUE_MAX_uV 16000 #define RTQ2208_BUCK_MASK(uv_irq, ov_irq) (1 << ((uv_irq) % 8) | 1 << ((ov_irq) % 8)) @@ -142,12 +157,11 @@ static int rtq2208_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) * Because the relation of seleltion and value is like that * * seletion: value - * 000: 64mv - * 001: 32mv + * 010: 16mv * ... * 111: 0.5mv * - * For example, if I would like to select 64mv, the fls(ramp_delay) - 1 will be 0b111, + * For example, if I would like to select 16mv, the fls(ramp_delay) - 1 will be 0b010, * and I need to use 0b111 - sel to do the shifting */ @@ -215,7 +229,7 @@ static const struct regulator_ops rtq2208_regulator_buck_ops = { .set_suspend_mode = rtq2208_set_suspend_mode, }; -static const struct regulator_ops rtq2208_regulator_ldo_ops = { +static const struct regulator_ops rtq2208_regulator_ldo_fix_ops = { .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, @@ -224,6 +238,23 @@ static const struct regulator_ops rtq2208_regulator_ldo_ops = { .set_suspend_disable = rtq2208_set_suspend_disable, }; +static const struct regulator_ops rtq2208_regulator_ldo_adj_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .list_voltage = regulator_list_voltage_table, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .set_suspend_enable = rtq2208_set_suspend_enable, + .set_suspend_disable = rtq2208_set_suspend_disable, +}; + +static const unsigned int rtq2208_ldo_volt_table[] = { + 1800000, + 3300000, +}; + static unsigned int rtq2208_of_map_mode(unsigned int mode) { switch (mode) { @@ -318,15 +349,25 @@ static irqreturn_t rtq2208_irq_handler(int irqno, void *devid) return IRQ_HANDLED; } -#define RTQ2208_REGULATOR_INFO(_name, _base) \ -{ \ - .name = #_name, \ - .base = _base, \ +#define BUCK_INFO(_name, _id) \ +{ \ + .name = _name, \ + .base = RTQ2208_REG_BUCK_##_id##_CFG0, \ + .enable_reg = BUCK_RG_SHIFT(RTQ2208_REG_BUCK_##_id##_CFG0, 2), \ + .dis_reg = RTQ2208_REG_BUCK_##_id##_CFG0, \ } -#define BUCK_RG_BASE(_id) RTQ2208_REG_BUCK_##_id##_CFG0 + +#define LDO_INFO(_name, _id) \ +{ \ + .name = _name, \ + .base = RTQ2208_REG_LDO##_id##_CFG, \ + .enable_reg = RTQ2208_REG_LDO##_id##_CFG, \ + .dis_mask = RTQ2208_LDO##_id##_DISCHG_EN_MASK, \ + .dis_on = RTQ2208_LDO##_id##_DISCHG_EN_MASK, \ + .vsel_mask = RTQ2208_LDO##_id##_VOSEL_SD_MASK, \ +} + #define BUCK_RG_SHIFT(_base, _shift) (_base + _shift) -#define LDO_RG_BASE(_id) RTQ2208_REG_LDO##_id##_CFG -#define LDO_RG_SHIFT(_base, _shift) (_base + _shift) #define VSEL_SHIFT(_sel) (_sel ? 3 : 1) #define MTP_SEL_MASK(_sel) RTQ2208_BUCK_EN_NR_MTP_SEL##_sel##_MASK @@ -335,62 +376,30 @@ static const struct linear_range rtq2208_vout_range[] = { REGULATOR_LINEAR_RANGE(1310000, 181, 255, 10000), }; -static int rtq2208_of_get_fixed_voltage(struct device *dev, - struct of_regulator_match *rtq2208_ldo_match, int n_fixed) -{ - struct device_node *np; - struct of_regulator_match *match; - struct rtq2208_regulator_desc *rdesc; - struct regulator_init_data *init_data; - int ret, i; - - if (!dev->of_node) - return -ENODEV; - - np = of_get_child_by_name(dev->of_node, "regulators"); - if (!np) - np = dev->of_node; - - ret = of_regulator_match(dev, np, rtq2208_ldo_match, n_fixed); - - of_node_put(np); - - if (ret < 0) - return ret; - - for (i = 0; i < n_fixed; i++) { - match = rtq2208_ldo_match + i; - init_data = match->init_data; - rdesc = (struct rtq2208_regulator_desc *)match->driver_data; - - if (!init_data || !rdesc) - continue; - - if (init_data->constraints.min_uV == init_data->constraints.max_uV) - rdesc->desc.fixed_uV = init_data->constraints.min_uV; - } - - return 0; -} - -static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, int mtp_sel, - int idx, struct of_regulator_match *rtq2208_ldo_match, int *ldo_idx) +static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, int mtp_sel, int idx, + unsigned int ldo1_fixed, unsigned int ldo2_fixed) { struct regulator_desc *desc; + unsigned int fixed_uV; static const struct { char *name; int base; + int enable_reg; + int dis_reg; + int dis_mask; + int dis_on; + int vsel_mask; } regulator_info[] = { - RTQ2208_REGULATOR_INFO(buck-b, BUCK_RG_BASE(B)), - RTQ2208_REGULATOR_INFO(buck-c, BUCK_RG_BASE(C)), - RTQ2208_REGULATOR_INFO(buck-d, BUCK_RG_BASE(D)), - RTQ2208_REGULATOR_INFO(buck-a, BUCK_RG_BASE(A)), - RTQ2208_REGULATOR_INFO(buck-f, BUCK_RG_BASE(F)), - RTQ2208_REGULATOR_INFO(buck-g, BUCK_RG_BASE(G)), - RTQ2208_REGULATOR_INFO(buck-h, BUCK_RG_BASE(H)), - RTQ2208_REGULATOR_INFO(buck-e, BUCK_RG_BASE(E)), - RTQ2208_REGULATOR_INFO(ldo2, LDO_RG_BASE(2)), - RTQ2208_REGULATOR_INFO(ldo1, LDO_RG_BASE(1)), + BUCK_INFO("buck-b", B), + BUCK_INFO("buck-c", C), + BUCK_INFO("buck-d", D), + BUCK_INFO("buck-a", A), + BUCK_INFO("buck-f", F), + BUCK_INFO("buck-g", G), + BUCK_INFO("buck-h", H), + BUCK_INFO("buck-e", E), + LDO_INFO("ldo2", 2), + LDO_INFO("ldo1", 1), }, *curr_info; curr_info = regulator_info + idx; @@ -402,15 +411,14 @@ static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, in desc->owner = THIS_MODULE; desc->type = REGULATOR_VOLTAGE; desc->enable_mask = mtp_sel ? MTP_SEL_MASK(1) : MTP_SEL_MASK(0); - desc->active_discharge_on = RTQ2208_EN_DIS_MASK; + desc->enable_reg = curr_info->enable_reg; desc->active_discharge_off = 0; - desc->active_discharge_mask = RTQ2208_EN_DIS_MASK; rdesc->mode_mask = RTQ2208_BUCK_NRMODE_MASK; - if (idx >= RTQ2208_BUCK_B && idx <= RTQ2208_BUCK_E) { + switch (idx) { + case RTQ2208_BUCK_B ... RTQ2208_BUCK_E: /* init buck desc */ - desc->enable_reg = BUCK_RG_SHIFT(curr_info->base, 2); desc->ops = &rtq2208_regulator_buck_ops; desc->vsel_reg = curr_info->base + VSEL_SHIFT(mtp_sel); desc->vsel_mask = RTQ2208_BUCK_NR_MTP_SEL_MASK; @@ -418,34 +426,46 @@ static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, in desc->linear_ranges = rtq2208_vout_range; desc->n_linear_ranges = ARRAY_SIZE(rtq2208_vout_range); desc->ramp_reg = BUCK_RG_SHIFT(curr_info->base, 5); - desc->active_discharge_reg = curr_info->base; desc->of_map_mode = rtq2208_of_map_mode; + desc->active_discharge_reg = curr_info->dis_reg; + desc->active_discharge_on = RTQ2208_EN_DIS_MASK; + desc->active_discharge_mask = RTQ2208_EN_DIS_MASK; rdesc->mode_reg = BUCK_RG_SHIFT(curr_info->base, 2); rdesc->suspend_config_reg = BUCK_RG_SHIFT(curr_info->base, 4); rdesc->suspend_enable_mask = RTQ2208_BUCK_EN_STR_MASK; rdesc->suspend_mode_mask = RTQ2208_BUCK_STRMODE_MASK; - } else { - /* init ldo desc */ - desc->enable_reg = curr_info->base; - desc->ops = &rtq2208_regulator_ldo_ops; - desc->n_voltages = 1; - desc->active_discharge_reg = LDO_RG_SHIFT(curr_info->base, 2); + break; + default: + fixed_uV = idx == RTQ2208_LDO2 ? ldo2_fixed : ldo1_fixed; + if (fixed_uV) { + desc->n_voltages = 1; + desc->fixed_uV = fixed_uV; + desc->ops = &rtq2208_regulator_ldo_fix_ops; + } else { + desc->n_voltages = ARRAY_SIZE(rtq2208_ldo_volt_table); + desc->volt_table = rtq2208_ldo_volt_table; + desc->ops = &rtq2208_regulator_ldo_adj_ops; + } - rtq2208_ldo_match[*ldo_idx].name = desc->name; - rtq2208_ldo_match[*ldo_idx].driver_data = rdesc; - rtq2208_ldo_match[(*ldo_idx)++].desc = desc; + /* init ldo desc */ + desc->active_discharge_reg = RTQ2208_REG_LDO_DVS_CTRL; + desc->active_discharge_on = curr_info->dis_on; + desc->active_discharge_mask = curr_info->dis_mask; + desc->vsel_reg = RTQ2208_REG_LDO_DVS_CTRL; + desc->vsel_mask = curr_info->vsel_mask; rdesc->suspend_config_reg = curr_info->base; rdesc->suspend_enable_mask = RTQ2208_LDO_EN_STR_MASK; + break; } } static int rtq2208_parse_regulator_dt_data(int n_regulator, const unsigned int *regulator_idx_table, - struct rtq2208_regulator_desc *rdesc[RTQ2208_LDO_MAX], struct device *dev) + struct rtq2208_regulator_desc *rdesc[RTQ2208_LDO_MAX], struct device *dev, + unsigned int ldo1_fixed, unsigned int ldo2_fixed) { - struct of_regulator_match rtq2208_ldo_match[2]; - int mtp_sel, ret, i, idx, ldo_idx = 0; + int mtp_sel, i, idx; /* get mtp_sel0 or mtp_sel1 */ mtp_sel = device_property_read_bool(dev, "richtek,mtp-sel-high"); @@ -457,39 +477,101 @@ static int rtq2208_parse_regulator_dt_data(int n_regulator, const unsigned int * if (!rdesc[i]) return -ENOMEM; - rtq2208_init_regulator_desc(rdesc[i], mtp_sel, idx, rtq2208_ldo_match, &ldo_idx); + rtq2208_init_regulator_desc(rdesc[i], mtp_sel, idx, ldo1_fixed, ldo2_fixed); } - /* init ldo fixed_uV */ - ret = rtq2208_of_get_fixed_voltage(dev, rtq2208_ldo_match, ldo_idx); - if (ret) - return dev_err_probe(dev, ret, "Failed to get ldo fixed_uV\n"); - return 0; } -/** different slave address corresponds different used bucks - * slave address 0x10: BUCK[BCA FGE] - * slave address 0x20: BUCK[BC FGHE] - * slave address 0x40: BUCK[C G] - */ -static int rtq2208_regulator_check(int slave_addr, int *num, - int *regulator_idx_table, unsigned int *buck_masks) +static int rtq2208_regulator_check(struct device *dev, int *num, int *regulator_idx_table, + unsigned int *buck_masks, unsigned int *ldo1_fixed_uV, + unsigned int *ldo2_fixed_uV) { - static bool rtq2208_used_table[3][RTQ2208_LDO_MAX] = { - /* BUCK[BCA FGE], LDO[12] */ - {1, 1, 0, 1, 1, 1, 0, 1, 1, 1}, - /* BUCK[BC FGHE], LDO[12]*/ - {1, 1, 0, 0, 1, 1, 1, 1, 1, 1}, - /* BUCK[C G], LDO[12] */ - {0, 1, 0, 0, 0, 1, 0, 0, 1, 1}, - }; - int i, idx = ffs(slave_addr >> 4) - 1; + struct regmap *regmap = dev_get_regmap(dev, NULL); + bool rtq2208_used_table[RTQ2208_LDO_MAX] = {0}; + u8 entry_key[] = { 0x69, 0x01 }; + unsigned int buck_phase, ldo_cfg0, ldo_cfg1; + int i, ret; u8 mask; + ret = regmap_raw_write(regmap, RTQ2208_REG_HIDDEN0, entry_key, ARRAY_SIZE(entry_key)); + if (ret) + return dev_err_probe(dev, ret, "Failed to enter hidden page\n"); + + ret = regmap_read(regmap, RTQ2208_REG_HIDDEN_BUCKPH, &buck_phase); + if (ret) + return dev_err_probe(dev, ret, "Failed to read buck phase configuration\n"); + + ret = regmap_read(regmap, RTQ2208_REG_HIDDEN_LDOCFG0, &ldo_cfg0); + if (ret) + return dev_err_probe(dev, ret, "Failed to read ldo cfg0\n"); + + ret = regmap_read(regmap, RTQ2208_REG_HIDDEN_LDOCFG1, &ldo_cfg1); + if (ret) + return dev_err_probe(dev, ret, "Failed to read ldo cfg1\n"); + + ret = regmap_write(regmap, RTQ2208_REG_HIDDEN1, 0x00); + if (ret) + return dev_err_probe(dev, ret, "Failed to exit hidden page\n"); + + dev_info(dev, "BUCK Phase 0x%x\n", buck_phase); + /* + * Use buck phase configuration to assign used table mask + * GROUP1 GROUP2 + * 0 -> 2P + 2P BC FG + * 1 -> 2P + 1P + 1P BCA FGE + * 2 -> 1P + 1P + 1P + 1P BCDA FGHE + * 3 -> 3P + 1P BC FG + * others -> 4P C G + */ + switch (FIELD_GET(RTQ2208_MASK_BUCKPH_GROUP1, buck_phase)) { + case 2: + rtq2208_used_table[RTQ2208_BUCK_D] = true; + fallthrough; + case 1: + rtq2208_used_table[RTQ2208_BUCK_A] = true; + fallthrough; + case 0: + case 3: + rtq2208_used_table[RTQ2208_BUCK_B] = true; + fallthrough; + default: + rtq2208_used_table[RTQ2208_BUCK_C] = true; + break; + } + + switch (FIELD_GET(RTQ2208_MASK_BUCKPH_GROUP2, buck_phase)) { + case 2: + rtq2208_used_table[RTQ2208_BUCK_F] = true; + fallthrough; + case 1: + rtq2208_used_table[RTQ2208_BUCK_E] = true; + fallthrough; + case 0: + case 3: + rtq2208_used_table[RTQ2208_BUCK_H] = true; + fallthrough; + default: + rtq2208_used_table[RTQ2208_BUCK_G] = true; + break; + } + + *ldo1_fixed_uV = FIELD_GET(RTQ2208_MASK_LDO1_FIXED, ldo_cfg1) ? 1200000 : 0; + + if (!FIELD_GET(RTQ2208_MASK_LDO2_OPT0, ldo_cfg0) && + !FIELD_GET(RTQ2208_MASK_LDO2_OPT1, ldo_cfg1)) + *ldo2_fixed_uV = 0; + else if (FIELD_GET(RTQ2208_MASK_LDO2_OPT1, ldo_cfg1)) + *ldo2_fixed_uV = 900000; + else + *ldo2_fixed_uV = 1200000; + + /* By default, LDO1 & LDO2 are always used */ + rtq2208_used_table[RTQ2208_LDO1] = rtq2208_used_table[RTQ2208_LDO2] = true; + for (i = 0; i < RTQ2208_LDO_MAX; i++) { - if (!rtq2208_used_table[idx][i]) + if (!rtq2208_used_table[i]) continue; regulator_idx_table[(*num)++] = i; @@ -504,7 +586,7 @@ static int rtq2208_regulator_check(int slave_addr, int *num, static const struct regmap_config rtq2208_regmap_config = { .reg_bits = 8, .val_bits = 8, - .max_register = 0xEF, + .max_register = 0xFF, }; static int rtq2208_probe(struct i2c_client *i2c) @@ -513,11 +595,12 @@ static int rtq2208_probe(struct i2c_client *i2c) struct regmap *regmap; struct rtq2208_regulator_desc *rdesc[RTQ2208_LDO_MAX]; struct regulator_dev *rdev; - struct regulator_config cfg; + struct regulator_config cfg = {}; struct rtq2208_rdev_map *rdev_map; int i, ret = 0, idx, n_regulator = 0; unsigned int regulator_idx_table[RTQ2208_LDO_MAX], buck_masks[RTQ2208_BUCK_NUM_IRQ_REGS] = {0x33, 0x33, 0x33, 0x33, 0x33}; + unsigned int ldo1_fixed_uV, ldo2_fixed_uV; rdev_map = devm_kzalloc(dev, sizeof(struct rtq2208_rdev_map), GFP_KERNEL); if (!rdev_map) @@ -528,7 +611,8 @@ static int rtq2208_probe(struct i2c_client *i2c) return dev_err_probe(dev, PTR_ERR(regmap), "Failed to allocate regmap\n"); /* get needed regulator */ - ret = rtq2208_regulator_check(i2c->addr, &n_regulator, regulator_idx_table, buck_masks); + ret = rtq2208_regulator_check(dev, &n_regulator, regulator_idx_table, buck_masks, + &ldo1_fixed_uV, &ldo2_fixed_uV); if (ret) return dev_err_probe(dev, ret, "Failed to check used regulators\n"); @@ -538,7 +622,8 @@ static int rtq2208_probe(struct i2c_client *i2c) cfg.dev = dev; /* init regulator desc */ - ret = rtq2208_parse_regulator_dt_data(n_regulator, regulator_idx_table, rdesc, dev); + ret = rtq2208_parse_regulator_dt_data(n_regulator, regulator_idx_table, rdesc, dev, + ldo1_fixed_uV, ldo2_fixed_uV); if (ret) return ret; |