diff options
Diffstat (limited to 'drivers/regulator/bd718x7-regulator.c')
| -rw-r--r-- | drivers/regulator/bd718x7-regulator.c | 1163 |
1 files changed, 929 insertions, 234 deletions
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c index b8dcdc21dc22..1b5997c8482e 100644 --- a/drivers/regulator/bd718x7-regulator.c +++ b/drivers/regulator/bd718x7-regulator.c @@ -2,9 +2,9 @@ // Copyright (C) 2018 ROHM Semiconductors // bd71837-regulator.c ROHM BD71837MWV/BD71847MWV regulator driver +#include <linux/cleanup.h> #include <linux/delay.h> #include <linux/err.h> -#include <linux/gpio.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/mfd/rohm-bd718x7.h> @@ -16,6 +16,74 @@ #include <linux/regulator/of_regulator.h> #include <linux/slab.h> +/* Typical regulator startup times as per data sheet in uS */ +#define BD71847_BUCK1_STARTUP_TIME 144 +#define BD71847_BUCK2_STARTUP_TIME 162 +#define BD71847_BUCK3_STARTUP_TIME 162 +#define BD71847_BUCK4_STARTUP_TIME 240 +#define BD71847_BUCK5_STARTUP_TIME 270 +#define BD71847_BUCK6_STARTUP_TIME 200 +#define BD71847_LDO1_STARTUP_TIME 440 +#define BD71847_LDO2_STARTUP_TIME 370 +#define BD71847_LDO3_STARTUP_TIME 310 +#define BD71847_LDO4_STARTUP_TIME 400 +#define BD71847_LDO5_STARTUP_TIME 530 +#define BD71847_LDO6_STARTUP_TIME 400 + +#define BD71837_BUCK1_STARTUP_TIME 160 +#define BD71837_BUCK2_STARTUP_TIME 180 +#define BD71837_BUCK3_STARTUP_TIME 180 +#define BD71837_BUCK4_STARTUP_TIME 180 +#define BD71837_BUCK5_STARTUP_TIME 160 +#define BD71837_BUCK6_STARTUP_TIME 240 +#define BD71837_BUCK7_STARTUP_TIME 220 +#define BD71837_BUCK8_STARTUP_TIME 200 +#define BD71837_LDO1_STARTUP_TIME 440 +#define BD71837_LDO2_STARTUP_TIME 370 +#define BD71837_LDO3_STARTUP_TIME 310 +#define BD71837_LDO4_STARTUP_TIME 400 +#define BD71837_LDO5_STARTUP_TIME 310 +#define BD71837_LDO6_STARTUP_TIME 400 +#define BD71837_LDO7_STARTUP_TIME 530 + +/* + * BD718(37/47/50) have two "enable control modes". ON/OFF can either be + * controlled by software - or by PMIC internal HW state machine. Whether + * regulator should be under SW or HW control can be defined from device-tree. + * Let's provide separate ops for regulators to use depending on the "enable + * control mode". + */ +#define BD718XX_HWOPNAME(swopname) swopname##_hwcontrol + +#define BD718XX_OPS(name, _list_voltage, _map_voltage, _set_voltage_sel, \ + _get_voltage_sel, _set_voltage_time_sel, _set_ramp_delay, \ + _set_uvp, _set_ovp) \ +static const struct regulator_ops name = { \ + .enable = regulator_enable_regmap, \ + .disable = regulator_disable_regmap, \ + .is_enabled = regulator_is_enabled_regmap, \ + .list_voltage = (_list_voltage), \ + .map_voltage = (_map_voltage), \ + .set_voltage_sel = (_set_voltage_sel), \ + .get_voltage_sel = (_get_voltage_sel), \ + .set_voltage_time_sel = (_set_voltage_time_sel), \ + .set_ramp_delay = (_set_ramp_delay), \ + .set_under_voltage_protection = (_set_uvp), \ + .set_over_voltage_protection = (_set_ovp), \ +}; \ + \ +static const struct regulator_ops BD718XX_HWOPNAME(name) = { \ + .is_enabled = always_enabled_by_hwstate, \ + .list_voltage = (_list_voltage), \ + .map_voltage = (_map_voltage), \ + .set_voltage_sel = (_set_voltage_sel), \ + .get_voltage_sel = (_get_voltage_sel), \ + .set_voltage_time_sel = (_set_voltage_time_sel), \ + .set_ramp_delay = (_set_ramp_delay), \ + .set_under_voltage_protection = (_set_uvp), \ + .set_over_voltage_protection = (_set_ovp), \ +} \ + /* * BUCK1/2/3/4 * BUCK1RAMPRATE[1:0] BUCK1 DVS ramp rate setting @@ -24,136 +92,179 @@ * 10: 2.50mV/usec 10mV 4uS * 11: 1.25mV/usec 10mV 8uS */ -static int bd718xx_buck1234_set_ramp_delay(struct regulator_dev *rdev, - int ramp_delay) +static const unsigned int bd718xx_ramp_delay[] = { 10000, 5000, 2500, 1250 }; + +/* These functions are used when regulators are under HW state machine control. + * We assume PMIC is in RUN state because SW running and able to query the + * status. Most of the regulators have fixed ON or OFF state at RUN/IDLE so for + * them we just return a constant. BD71837 BUCK3 and BUCK4 are exceptions as + * they support configuring the ON/OFF state for RUN. + * + * Note for next hacker - these PMICs have a register where the HW state can be + * read. If assuming RUN appears to be false in your use-case - you can + * implement state reading (although that is not going to be atomic) before + * returning the enable state. + */ +static int always_enabled_by_hwstate(struct regulator_dev *rdev) { - int id = rdev->desc->id; - unsigned int ramp_value = BUCK_RAMPRATE_10P00MV; - - dev_dbg(&rdev->dev, "Buck[%d] Set Ramp = %d\n", id + 1, - ramp_delay); - switch (ramp_delay) { - case 1 ... 1250: - ramp_value = BUCK_RAMPRATE_1P25MV; - break; - case 1251 ... 2500: - ramp_value = BUCK_RAMPRATE_2P50MV; - break; - case 2501 ... 5000: - ramp_value = BUCK_RAMPRATE_5P00MV; - break; - case 5001 ... 10000: - ramp_value = BUCK_RAMPRATE_10P00MV; - break; - default: - ramp_value = BUCK_RAMPRATE_10P00MV; - dev_err(&rdev->dev, - "%s: ramp_delay: %d not supported, setting 10000mV//us\n", - rdev->desc->name, ramp_delay); + return 1; +} + +static int never_enabled_by_hwstate(struct regulator_dev *rdev) +{ + return 0; +} + +static int bd71837_get_buck34_enable_hwctrl(struct regulator_dev *rdev) +{ + int ret; + unsigned int val; + + ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val); + if (ret) + return ret; + + return !!(BD718XX_BUCK_RUN_ON & val); +} + +static void voltage_change_done(struct regulator_dev *rdev, unsigned int sel, + unsigned int *mask) +{ + int ret; + + if (*mask) { + /* + * We had fault detection disabled for the duration of the + * voltage change. + * + * According to HW colleagues the maximum time it takes is + * 1000us. I assume that on systems with light load this + * might be less - and we could probably use DT to give + * system specific delay value if performance matters. + * + * Well, knowing we use I2C here and can add scheduling delays + * I don't think it is worth the hassle and I just add fixed + * 1ms sleep here (and allow scheduling). If this turns out to + * be a problem we can change it to delay and make the delay + * time configurable. + */ + msleep(1); + + ret = regmap_clear_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2, + *mask); + if (ret) + dev_err(&rdev->dev, + "Failed to re-enable voltage monitoring (%d)\n", + ret); } +} + +static int voltage_change_prepare(struct regulator_dev *rdev, unsigned int sel, + unsigned int *mask) +{ + int ret; - return regmap_update_bits(rdev->regmap, BD718XX_REG_BUCK1_CTRL + id, - BUCK_RAMPRATE_MASK, ramp_value << 6); + *mask = 0; + if (rdev->desc->ops->is_enabled(rdev)) { + int now, new; + + now = rdev->desc->ops->get_voltage_sel(rdev); + if (now < 0) + return now; + + now = rdev->desc->ops->list_voltage(rdev, now); + if (now < 0) + return now; + + new = rdev->desc->ops->list_voltage(rdev, sel); + if (new < 0) + return new; + + /* + * If we increase LDO voltage when LDO is enabled we need to + * disable the power-good detection until voltage has reached + * the new level. + */ + if (new > now) { + int tmp; + int prot_bit; + int ldo_offset = rdev->desc->id - BD718XX_LDO1; + + prot_bit = BD718XX_LDO1_VRMON80 << ldo_offset; + ret = regmap_read(rdev->regmap, BD718XX_REG_MVRFLTMASK2, + &tmp); + if (ret) { + dev_err(&rdev->dev, + "Failed to read voltage monitoring state\n"); + return ret; + } + + if (!(tmp & prot_bit)) { + /* We disable protection if it was enabled... */ + ret = regmap_set_bits(rdev->regmap, + BD718XX_REG_MVRFLTMASK2, + prot_bit); + /* ...and we also want to re-enable it */ + *mask = prot_bit; + } + if (ret) { + dev_err(&rdev->dev, + "Failed to stop voltage monitoring\n"); + return ret; + } + } + } + + return 0; } -/* Bucks 1 to 4 support DVS. PWM mode is used when voltage is changed. - * Bucks 5 to 8 and LDOs can use PFM and must be disabled when voltage - * is changed. Hence we return -EBUSY for these if voltage is changed - * when BUCK/LDO is enabled. - */ static int bd718xx_set_voltage_sel_restricted(struct regulator_dev *rdev, unsigned int sel) { - if (regulator_is_enabled_regmap(rdev)) - return -EBUSY; + int ret; + int mask; + + ret = voltage_change_prepare(rdev, sel, &mask); + if (ret) + return ret; - return regulator_set_voltage_sel_regmap(rdev, sel); + ret = regulator_set_voltage_sel_regmap(rdev, sel); + voltage_change_done(rdev, sel, &mask); + + return ret; } static int bd718xx_set_voltage_sel_pickable_restricted( struct regulator_dev *rdev, unsigned int sel) { - if (regulator_is_enabled_regmap(rdev)) - return -EBUSY; + int ret; + int mask; - return regulator_set_voltage_sel_pickable_regmap(rdev, sel); -} + ret = voltage_change_prepare(rdev, sel, &mask); + if (ret) + return ret; -static struct regulator_ops bd718xx_pickable_range_ldo_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_pickable_linear_range, - .set_voltage_sel = bd718xx_set_voltage_sel_pickable_restricted, - .get_voltage_sel = regulator_get_voltage_sel_pickable_regmap, -}; + ret = regulator_set_voltage_sel_pickable_regmap(rdev, sel); + voltage_change_done(rdev, sel, &mask); -static struct regulator_ops bd718xx_pickable_range_buck_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_pickable_linear_range, - .set_voltage_sel = bd718xx_set_voltage_sel_pickable_restricted, - .get_voltage_sel = regulator_get_voltage_sel_pickable_regmap, - .set_voltage_time_sel = regulator_set_voltage_time_sel, -}; - -static struct regulator_ops bd718xx_ldo_regulator_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_linear_range, - .set_voltage_sel = bd718xx_set_voltage_sel_restricted, - .get_voltage_sel = regulator_get_voltage_sel_regmap, -}; - -static struct regulator_ops bd718xx_ldo_regulator_nolinear_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_table, - .set_voltage_sel = bd718xx_set_voltage_sel_restricted, - .get_voltage_sel = regulator_get_voltage_sel_regmap, -}; - -static struct regulator_ops bd718xx_buck_regulator_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_linear_range, - .set_voltage_sel = bd718xx_set_voltage_sel_restricted, - .get_voltage_sel = regulator_get_voltage_sel_regmap, - .set_voltage_time_sel = regulator_set_voltage_time_sel, -}; + return ret; +} -static struct regulator_ops bd718xx_buck_regulator_nolinear_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_table, - .map_voltage = regulator_map_voltage_ascend, - .set_voltage_sel = bd718xx_set_voltage_sel_restricted, - .get_voltage_sel = regulator_get_voltage_sel_regmap, - .set_voltage_time_sel = regulator_set_voltage_time_sel, -}; +static int bd71837_set_voltage_sel_pickable_restricted( + struct regulator_dev *rdev, unsigned int sel) +{ + if (rdev->desc->ops->is_enabled(rdev)) + return -EBUSY; -static struct regulator_ops bd718xx_dvs_buck_regulator_ops = { - .enable = regulator_enable_regmap, - .disable = regulator_disable_regmap, - .is_enabled = regulator_is_enabled_regmap, - .list_voltage = regulator_list_voltage_linear_range, - .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, - .set_ramp_delay = bd718xx_buck1234_set_ramp_delay, -}; + return regulator_set_voltage_sel_pickable_regmap(rdev, sel); +} /* * BD71837 BUCK1/2/3/4 * BD71847 BUCK1/2 * 0.70 to 1.30V (10mV step) */ -static const struct regulator_linear_range bd718xx_dvs_buck_volts[] = { +static const struct linear_range bd718xx_dvs_buck_volts[] = { REGULATOR_LINEAR_RANGE(700000, 0x00, 0x3C, 10000), REGULATOR_LINEAR_RANGE(1300000, 0x3D, 0x3F, 0), }; @@ -164,7 +275,7 @@ static const struct regulator_linear_range bd718xx_dvs_buck_volts[] = { * and * 0.675 to 1.325 (range 1) */ -static const struct regulator_linear_range bd71837_buck5_volts[] = { +static const struct linear_range bd71837_buck5_volts[] = { /* Ranges when VOLT_SEL bit is 0 */ REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000), REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000), @@ -180,13 +291,13 @@ static const struct regulator_linear_range bd71837_buck5_volts[] = { * and 0x1 for last 3 ranges. */ static const unsigned int bd71837_buck5_volt_range_sel[] = { - 0x0, 0x0, 0x0, 0x80, 0x80, 0x80 + 0x0, 0x0, 0x0, 0x1, 0x1, 0x1 }; /* * BD71847 BUCK3 */ -static const struct regulator_linear_range bd71847_buck3_volts[] = { +static const struct linear_range bd71847_buck3_volts[] = { /* Ranges when VOLT_SEL bits are 00 */ REGULATOR_LINEAR_RANGE(700000, 0x00, 0x03, 100000), REGULATOR_LINEAR_RANGE(1050000, 0x04, 0x05, 50000), @@ -200,21 +311,21 @@ static const struct regulator_linear_range bd71847_buck3_volts[] = { }; static const unsigned int bd71847_buck3_volt_range_sel[] = { - 0x0, 0x0, 0x0, 0x40, 0x80, 0x80, 0x80 + 0x0, 0x0, 0x0, 0x1, 0x2, 0x2, 0x2 }; -static const struct regulator_linear_range bd71847_buck4_volts[] = { +static const struct linear_range bd71847_buck4_volts[] = { REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000), REGULATOR_LINEAR_RANGE(2600000, 0x00, 0x03, 100000), }; -static const unsigned int bd71847_buck4_volt_range_sel[] = { 0x0, 0x40 }; +static const unsigned int bd71847_buck4_volt_range_sel[] = { 0x0, 0x1 }; /* * BUCK6 * 3.0V to 3.3V (step 100mV) */ -static const struct regulator_linear_range bd71837_buck6_volts[] = { +static const struct linear_range bd71837_buck6_volts[] = { REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000), }; @@ -238,7 +349,7 @@ static const unsigned int bd718xx_3rd_nodvs_buck_volts[] = { * BUCK8 * 0.8V to 1.40V (step 10mV) */ -static const struct regulator_linear_range bd718xx_4th_nodvs_buck_volts[] = { +static const struct linear_range bd718xx_4th_nodvs_buck_volts[] = { REGULATOR_LINEAR_RANGE(800000, 0x00, 0x3C, 10000), }; @@ -246,12 +357,12 @@ static const struct regulator_linear_range bd718xx_4th_nodvs_buck_volts[] = { * LDO1 * 3.0 to 3.3V (100mV step) */ -static const struct regulator_linear_range bd718xx_ldo1_volts[] = { +static const struct linear_range bd718xx_ldo1_volts[] = { REGULATOR_LINEAR_RANGE(3000000, 0x00, 0x03, 100000), REGULATOR_LINEAR_RANGE(1600000, 0x00, 0x03, 100000), }; -static const unsigned int bd718xx_ldo1_volt_range_sel[] = { 0x0, 0x20 }; +static const unsigned int bd718xx_ldo1_volt_range_sel[] = { 0x0, 0x1 }; /* * LDO2 @@ -265,7 +376,7 @@ static const unsigned int ldo_2_volts[] = { * LDO3 * 1.8 to 3.3V (100mV step) */ -static const struct regulator_linear_range bd718xx_ldo3_volts[] = { +static const struct linear_range bd718xx_ldo3_volts[] = { REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), }; @@ -273,7 +384,7 @@ static const struct regulator_linear_range bd718xx_ldo3_volts[] = { * LDO4 * 0.9 to 1.8V (100mV step) */ -static const struct regulator_linear_range bd718xx_ldo4_volts[] = { +static const struct linear_range bd718xx_ldo4_volts[] = { REGULATOR_LINEAR_RANGE(900000, 0x00, 0x09, 100000), }; @@ -281,7 +392,7 @@ static const struct regulator_linear_range bd718xx_ldo4_volts[] = { * LDO5 for BD71837 * 1.8 to 3.3V (100mV step) */ -static const struct regulator_linear_range bd71837_ldo5_volts[] = { +static const struct linear_range bd71837_ldo5_volts[] = { REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), }; @@ -289,18 +400,18 @@ static const struct regulator_linear_range bd71837_ldo5_volts[] = { * LDO5 for BD71837 * 1.8 to 3.3V (100mV step) */ -static const struct regulator_linear_range bd71847_ldo5_volts[] = { +static const struct linear_range bd71847_ldo5_volts[] = { REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), REGULATOR_LINEAR_RANGE(800000, 0x00, 0x0F, 100000), }; -static const unsigned int bd71847_ldo5_volt_range_sel[] = { 0x0, 0x20 }; +static const unsigned int bd71847_ldo5_volt_range_sel[] = { 0x0, 0x1 }; /* * LDO6 * 0.9 to 1.8V (100mV step) */ -static const struct regulator_linear_range bd718xx_ldo6_volts[] = { +static const struct linear_range bd718xx_ldo6_volts[] = { REGULATOR_LINEAR_RANGE(900000, 0x00, 0x09, 100000), }; @@ -308,7 +419,7 @@ static const struct regulator_linear_range bd718xx_ldo6_volts[] = { * LDO7 * 1.8 to 3.3V (100mV step) */ -static const struct regulator_linear_range bd71837_ldo7_volts[] = { +static const struct linear_range bd71837_ldo7_volts[] = { REGULATOR_LINEAR_RANGE(1800000, 0x00, 0x0F, 100000), }; @@ -319,11 +430,244 @@ struct reg_init { }; struct bd718xx_regulator_data { struct regulator_desc desc; + const struct rohm_dvs_config dvs; const struct reg_init init; const struct reg_init *additional_inits; int additional_init_amnt; }; +static int bd718x7_xvp_sanity_check(struct regulator_dev *rdev, int lim_uV, + int severity) +{ + /* + * BD71837/47/50 ... (ICs supported by this driver) do not provide + * warnings, only protection + */ + if (severity != REGULATOR_SEVERITY_PROT) { + dev_err(&rdev->dev, + "Unsupported Under Voltage protection level\n"); + return -EINVAL; + } + + /* + * And protection limit is not changeable. It can only be enabled + * or disabled + */ + if (lim_uV) + return -EINVAL; + + return 0; +} + +static int bd718x7_set_ldo_uvp(struct regulator_dev *rdev, int lim_uV, + int severity, bool enable) +{ + int ldo_offset = rdev->desc->id - BD718XX_LDO1; + int prot_bit, ret; + + ret = bd718x7_xvp_sanity_check(rdev, lim_uV, severity); + if (ret) + return ret; + + prot_bit = BD718XX_LDO1_VRMON80 << ldo_offset; + + if (enable) + return regmap_clear_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2, + prot_bit); + + return regmap_set_bits(rdev->regmap, BD718XX_REG_MVRFLTMASK2, + prot_bit); +} + +static int bd718x7_get_buck_prot_reg(int id, int *reg) +{ + + if (id > BD718XX_BUCK8) { + WARN_ON(id > BD718XX_BUCK8); + return -EINVAL; + } + + if (id > BD718XX_BUCK4) + *reg = BD718XX_REG_MVRFLTMASK0; + else + *reg = BD718XX_REG_MVRFLTMASK1; + + return 0; +} + +static int bd718x7_get_buck_ovp_info(int id, int *reg, int *bit) +{ + int ret; + + ret = bd718x7_get_buck_prot_reg(id, reg); + if (ret) + return ret; + + *bit = BIT((id % 4) * 2 + 1); + + return 0; +} + +static int bd718x7_get_buck_uvp_info(int id, int *reg, int *bit) +{ + int ret; + + ret = bd718x7_get_buck_prot_reg(id, reg); + if (ret) + return ret; + + *bit = BIT((id % 4) * 2); + + return 0; +} + +static int bd718x7_set_buck_uvp(struct regulator_dev *rdev, int lim_uV, + int severity, bool enable) +{ + int bit, reg, ret; + + ret = bd718x7_xvp_sanity_check(rdev, lim_uV, severity); + if (ret) + return ret; + + ret = bd718x7_get_buck_uvp_info(rdev->desc->id, ®, &bit); + if (ret) + return ret; + + if (enable) + return regmap_clear_bits(rdev->regmap, reg, bit); + + return regmap_set_bits(rdev->regmap, reg, bit); + +} + +static int bd718x7_set_buck_ovp(struct regulator_dev *rdev, int lim_uV, + int severity, + bool enable) +{ + int bit, reg, ret; + + ret = bd718x7_xvp_sanity_check(rdev, lim_uV, severity); + if (ret) + return ret; + + ret = bd718x7_get_buck_ovp_info(rdev->desc->id, ®, &bit); + if (ret) + return ret; + + if (enable) + return regmap_clear_bits(rdev->regmap, reg, bit); + + return regmap_set_bits(rdev->regmap, reg, bit); +} + +/* + * OPS common for BD71847 and BD71850 + */ +BD718XX_OPS(bd718xx_pickable_range_ldo_ops, + regulator_list_voltage_pickable_linear_range, NULL, + bd718xx_set_voltage_sel_pickable_restricted, + regulator_get_voltage_sel_pickable_regmap, NULL, NULL, + bd718x7_set_ldo_uvp, NULL); + +/* BD71847 and BD71850 LDO 5 is by default OFF at RUN state */ +static const struct regulator_ops bd718xx_ldo5_ops_hwstate = { + .is_enabled = never_enabled_by_hwstate, + .list_voltage = regulator_list_voltage_pickable_linear_range, + .set_voltage_sel = bd718xx_set_voltage_sel_pickable_restricted, + .get_voltage_sel = regulator_get_voltage_sel_pickable_regmap, + .set_under_voltage_protection = bd718x7_set_ldo_uvp, +}; + +BD718XX_OPS(bd718xx_pickable_range_buck_ops, + regulator_list_voltage_pickable_linear_range, NULL, + regulator_set_voltage_sel_pickable_regmap, + regulator_get_voltage_sel_pickable_regmap, + regulator_set_voltage_time_sel, NULL, bd718x7_set_buck_uvp, + bd718x7_set_buck_ovp); + +BD718XX_OPS(bd718xx_ldo_regulator_ops, regulator_list_voltage_linear_range, + NULL, bd718xx_set_voltage_sel_restricted, + regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp, + NULL); + +BD718XX_OPS(bd718xx_ldo_regulator_nolinear_ops, regulator_list_voltage_table, + NULL, bd718xx_set_voltage_sel_restricted, + regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp, + NULL); + +BD718XX_OPS(bd718xx_buck_regulator_ops, regulator_list_voltage_linear_range, + NULL, regulator_set_voltage_sel_regmap, + regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel, + NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp); + +BD718XX_OPS(bd718xx_buck_regulator_nolinear_ops, regulator_list_voltage_table, + regulator_map_voltage_ascend, regulator_set_voltage_sel_regmap, + regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel, + NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp); + +/* + * OPS for BD71837 + */ +BD718XX_OPS(bd71837_pickable_range_ldo_ops, + regulator_list_voltage_pickable_linear_range, NULL, + bd71837_set_voltage_sel_pickable_restricted, + regulator_get_voltage_sel_pickable_regmap, NULL, NULL, + bd718x7_set_ldo_uvp, NULL); + +BD718XX_OPS(bd71837_pickable_range_buck_ops, + regulator_list_voltage_pickable_linear_range, NULL, + bd71837_set_voltage_sel_pickable_restricted, + regulator_get_voltage_sel_pickable_regmap, + regulator_set_voltage_time_sel, NULL, bd718x7_set_buck_uvp, + bd718x7_set_buck_ovp); + +BD718XX_OPS(bd71837_ldo_regulator_ops, regulator_list_voltage_linear_range, + NULL, rohm_regulator_set_voltage_sel_restricted, + regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp, + NULL); + +BD718XX_OPS(bd71837_ldo_regulator_nolinear_ops, regulator_list_voltage_table, + NULL, rohm_regulator_set_voltage_sel_restricted, + regulator_get_voltage_sel_regmap, NULL, NULL, bd718x7_set_ldo_uvp, + NULL); + +BD718XX_OPS(bd71837_buck_regulator_ops, regulator_list_voltage_linear_range, + NULL, rohm_regulator_set_voltage_sel_restricted, + regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel, + NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp); + +BD718XX_OPS(bd71837_buck_regulator_nolinear_ops, regulator_list_voltage_table, + regulator_map_voltage_ascend, rohm_regulator_set_voltage_sel_restricted, + regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel, + NULL, bd718x7_set_buck_uvp, bd718x7_set_buck_ovp); +/* + * BD71837 bucks 3 and 4 support defining their enable/disable state also + * when buck enable state is under HW state machine control. In that case the + * bit [2] in CTRL register is used to indicate if regulator should be ON. + */ +static const struct regulator_ops bd71837_buck34_ops_hwctrl = { + .is_enabled = bd71837_get_buck34_enable_hwctrl, + .list_voltage = regulator_list_voltage_linear_range, + .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, + .set_ramp_delay = regulator_set_ramp_delay_regmap, + .set_under_voltage_protection = bd718x7_set_buck_uvp, + .set_over_voltage_protection = bd718x7_set_buck_ovp, +}; + +/* + * OPS for all of the ICs - BD718(37/47/50) + */ +BD718XX_OPS(bd718xx_dvs_buck_regulator_ops, regulator_list_voltage_linear_range, + NULL, regulator_set_voltage_sel_regmap, + regulator_get_voltage_sel_regmap, regulator_set_voltage_time_sel, + regulator_set_ramp_delay_regmap, bd718x7_set_buck_uvp, + bd718x7_set_buck_ovp); + + + /* * There is a HW quirk in BD71837. The shutdown sequence timings for * bucks/LDOs which are controlled via register interface are changed. @@ -350,14 +694,48 @@ static const struct reg_init bd71837_ldo6_inits[] = { }, }; -static const struct bd718xx_regulator_data bd71847_regulators[] = { +static int buck_set_hw_dvs_levels(struct device_node *np, + const struct regulator_desc *desc, + struct regulator_config *cfg) +{ + const struct bd718xx_regulator_data *data; + + data = container_of_const(desc, struct bd718xx_regulator_data, desc); + + return rohm_regulator_set_dvs_levels(&data->dvs, np, desc, cfg->regmap); +} + +static const struct regulator_ops *bd71847_swcontrol_ops[] = { + &bd718xx_dvs_buck_regulator_ops, &bd718xx_dvs_buck_regulator_ops, + &bd718xx_pickable_range_buck_ops, &bd718xx_pickable_range_buck_ops, + &bd718xx_buck_regulator_nolinear_ops, &bd718xx_buck_regulator_ops, + &bd718xx_pickable_range_ldo_ops, &bd718xx_ldo_regulator_nolinear_ops, + &bd718xx_ldo_regulator_ops, &bd718xx_ldo_regulator_ops, + &bd718xx_pickable_range_ldo_ops, &bd718xx_ldo_regulator_ops, +}; + +static const struct regulator_ops *bd71847_hwcontrol_ops[] = { + &BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops), + &BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops), + &BD718XX_HWOPNAME(bd718xx_pickable_range_buck_ops), + &BD718XX_HWOPNAME(bd718xx_pickable_range_buck_ops), + &BD718XX_HWOPNAME(bd718xx_buck_regulator_nolinear_ops), + &BD718XX_HWOPNAME(bd718xx_buck_regulator_ops), + &BD718XX_HWOPNAME(bd718xx_pickable_range_ldo_ops), + &BD718XX_HWOPNAME(bd718xx_ldo_regulator_nolinear_ops), + &BD718XX_HWOPNAME(bd718xx_ldo_regulator_ops), + &BD718XX_HWOPNAME(bd718xx_ldo_regulator_ops), + &bd718xx_ldo5_ops_hwstate, + &BD718XX_HWOPNAME(bd718xx_ldo_regulator_ops), +}; + +static struct bd718xx_regulator_data bd71847_regulators[] = { { .desc = { .name = "buck1", .of_match = of_match_ptr("BUCK1"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK1, - .ops = &bd718xx_dvs_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_dvs_buck_volts, @@ -367,7 +745,23 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = DVS_BUCK_RUN_MASK, .enable_reg = BD718XX_REG_BUCK1_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71847_BUCK1_STARTUP_TIME, .owner = THIS_MODULE, + .ramp_delay_table = bd718xx_ramp_delay, + .n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay), + .ramp_reg = BD718XX_REG_BUCK1_CTRL, + .ramp_mask = BUCK_RAMPRATE_MASK, + .of_parse_cb = buck_set_hw_dvs_levels, + }, + .dvs = { + .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | + ROHM_DVS_LEVEL_SUSPEND, + .run_reg = BD718XX_REG_BUCK1_VOLT_RUN, + .run_mask = DVS_BUCK_RUN_MASK, + .idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE, + .idle_mask = DVS_BUCK_RUN_MASK, + .suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP, + .suspend_mask = DVS_BUCK_RUN_MASK, }, .init = { .reg = BD718XX_REG_BUCK1_CTRL, @@ -381,7 +775,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("BUCK2"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK2, - .ops = &bd718xx_dvs_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_dvs_buck_volts, @@ -390,7 +783,20 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = DVS_BUCK_RUN_MASK, .enable_reg = BD718XX_REG_BUCK2_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71847_BUCK2_STARTUP_TIME, + .ramp_delay_table = bd718xx_ramp_delay, + .n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay), + .ramp_reg = BD718XX_REG_BUCK2_CTRL, + .ramp_mask = BUCK_RAMPRATE_MASK, .owner = THIS_MODULE, + .of_parse_cb = buck_set_hw_dvs_levels, + }, + .dvs = { + .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE, + .run_reg = BD718XX_REG_BUCK2_VOLT_RUN, + .run_mask = DVS_BUCK_RUN_MASK, + .idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE, + .idle_mask = DVS_BUCK_RUN_MASK, }, .init = { .reg = BD718XX_REG_BUCK2_CTRL, @@ -404,7 +810,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("BUCK3"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK3, - .ops = &bd718xx_pickable_range_buck_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71847_BUCK3_VOLTAGE_NUM, .linear_ranges = bd71847_buck3_volts, @@ -414,9 +819,10 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_1ST_NODVS_BUCK_MASK, .vsel_range_reg = BD718XX_REG_1ST_NODVS_BUCK_VOLT, .vsel_range_mask = BD71847_BUCK3_RANGE_MASK, - .linear_range_selectors = bd71847_buck3_volt_range_sel, + .linear_range_selectors_bitfield = bd71847_buck3_volt_range_sel, .enable_reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71847_BUCK3_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -431,7 +837,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("BUCK4"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK4, - .ops = &bd718xx_pickable_range_buck_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71847_BUCK4_VOLTAGE_NUM, .linear_ranges = bd71847_buck4_volts, @@ -442,8 +847,9 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD71847_BUCK4_MASK, .vsel_range_reg = BD718XX_REG_2ND_NODVS_BUCK_VOLT, .vsel_range_mask = BD71847_BUCK4_RANGE_MASK, - .linear_range_selectors = bd71847_buck4_volt_range_sel, + .linear_range_selectors_bitfield = bd71847_buck4_volt_range_sel, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71847_BUCK4_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -458,7 +864,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("BUCK5"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK5, - .ops = &bd718xx_buck_regulator_nolinear_ops, .type = REGULATOR_VOLTAGE, .volt_table = &bd718xx_3rd_nodvs_buck_volts[0], .n_voltages = ARRAY_SIZE(bd718xx_3rd_nodvs_buck_volts), @@ -466,6 +871,7 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_3RD_NODVS_BUCK_MASK, .enable_reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71847_BUCK5_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -480,7 +886,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("BUCK6"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK6, - .ops = &bd718xx_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_4TH_NODVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_4th_nodvs_buck_volts, @@ -490,6 +895,7 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_4TH_NODVS_BUCK_MASK, .enable_reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71847_BUCK6_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -504,7 +910,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("LDO1"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO1, - .ops = &bd718xx_pickable_range_ldo_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO1_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo1_volts, @@ -513,9 +918,10 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_LDO1_MASK, .vsel_range_reg = BD718XX_REG_LDO1_VOLT, .vsel_range_mask = BD718XX_LDO1_RANGE_MASK, - .linear_range_selectors = bd718xx_ldo1_volt_range_sel, + .linear_range_selectors_bitfield = bd718xx_ldo1_volt_range_sel, .enable_reg = BD718XX_REG_LDO1_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71847_LDO1_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -530,7 +936,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("LDO2"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO2, - .ops = &bd718xx_ldo_regulator_nolinear_ops, .type = REGULATOR_VOLTAGE, .volt_table = &ldo_2_volts[0], .vsel_reg = BD718XX_REG_LDO2_VOLT, @@ -538,6 +943,7 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .n_voltages = ARRAY_SIZE(ldo_2_volts), .enable_reg = BD718XX_REG_LDO2_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71847_LDO2_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -552,7 +958,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("LDO3"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO3, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO3_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo3_volts, @@ -561,6 +966,7 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_LDO3_MASK, .enable_reg = BD718XX_REG_LDO3_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71847_LDO3_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -575,7 +981,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("LDO4"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO4, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO4_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo4_volts, @@ -584,6 +989,7 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_LDO4_MASK, .enable_reg = BD718XX_REG_LDO4_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71847_LDO4_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -598,7 +1004,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("LDO5"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO5, - .ops = &bd718xx_pickable_range_ldo_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71847_LDO5_VOLTAGE_NUM, .linear_ranges = bd71847_ldo5_volts, @@ -607,9 +1012,10 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD71847_LDO5_MASK, .vsel_range_reg = BD718XX_REG_LDO5_VOLT, .vsel_range_mask = BD71847_LDO5_RANGE_MASK, - .linear_range_selectors = bd71847_ldo5_volt_range_sel, + .linear_range_selectors_bitfield = bd71847_ldo5_volt_range_sel, .enable_reg = BD718XX_REG_LDO5_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71847_LDO5_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -624,7 +1030,6 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .of_match = of_match_ptr("LDO6"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO6, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO6_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo6_volts, @@ -635,6 +1040,7 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { .vsel_mask = BD718XX_LDO6_MASK, .enable_reg = BD718XX_REG_LDO6_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71847_LDO6_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -645,14 +1051,41 @@ static const struct bd718xx_regulator_data bd71847_regulators[] = { }, }; -static const struct bd718xx_regulator_data bd71837_regulators[] = { +static const struct regulator_ops *bd71837_swcontrol_ops[] = { + &bd718xx_dvs_buck_regulator_ops, &bd718xx_dvs_buck_regulator_ops, + &bd718xx_dvs_buck_regulator_ops, &bd718xx_dvs_buck_regulator_ops, + &bd71837_pickable_range_buck_ops, &bd71837_buck_regulator_ops, + &bd71837_buck_regulator_nolinear_ops, &bd71837_buck_regulator_ops, + &bd71837_pickable_range_ldo_ops, &bd71837_ldo_regulator_nolinear_ops, + &bd71837_ldo_regulator_ops, &bd71837_ldo_regulator_ops, + &bd71837_ldo_regulator_ops, &bd71837_ldo_regulator_ops, + &bd71837_ldo_regulator_ops, +}; + +static const struct regulator_ops *bd71837_hwcontrol_ops[] = { + &BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops), + &BD718XX_HWOPNAME(bd718xx_dvs_buck_regulator_ops), + &bd71837_buck34_ops_hwctrl, &bd71837_buck34_ops_hwctrl, + &BD718XX_HWOPNAME(bd71837_pickable_range_buck_ops), + &BD718XX_HWOPNAME(bd71837_buck_regulator_ops), + &BD718XX_HWOPNAME(bd71837_buck_regulator_nolinear_ops), + &BD718XX_HWOPNAME(bd71837_buck_regulator_ops), + &BD718XX_HWOPNAME(bd71837_pickable_range_ldo_ops), + &BD718XX_HWOPNAME(bd71837_ldo_regulator_nolinear_ops), + &BD718XX_HWOPNAME(bd71837_ldo_regulator_ops), + &BD718XX_HWOPNAME(bd71837_ldo_regulator_ops), + &BD718XX_HWOPNAME(bd71837_ldo_regulator_ops), + &BD718XX_HWOPNAME(bd71837_ldo_regulator_ops), + &BD718XX_HWOPNAME(bd71837_ldo_regulator_ops), +}; + +static struct bd718xx_regulator_data bd71837_regulators[] = { { .desc = { .name = "buck1", .of_match = of_match_ptr("BUCK1"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK1, - .ops = &bd718xx_dvs_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_dvs_buck_volts, @@ -661,7 +1094,23 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = DVS_BUCK_RUN_MASK, .enable_reg = BD718XX_REG_BUCK1_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK1_STARTUP_TIME, + .ramp_delay_table = bd718xx_ramp_delay, + .n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay), + .ramp_reg = BD718XX_REG_BUCK1_CTRL, + .ramp_mask = BUCK_RAMPRATE_MASK, .owner = THIS_MODULE, + .of_parse_cb = buck_set_hw_dvs_levels, + }, + .dvs = { + .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE | + ROHM_DVS_LEVEL_SUSPEND, + .run_reg = BD718XX_REG_BUCK1_VOLT_RUN, + .run_mask = DVS_BUCK_RUN_MASK, + .idle_reg = BD718XX_REG_BUCK1_VOLT_IDLE, + .idle_mask = DVS_BUCK_RUN_MASK, + .suspend_reg = BD718XX_REG_BUCK1_VOLT_SUSP, + .suspend_mask = DVS_BUCK_RUN_MASK, }, .init = { .reg = BD718XX_REG_BUCK1_CTRL, @@ -675,7 +1124,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK2"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK2, - .ops = &bd718xx_dvs_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_dvs_buck_volts, @@ -684,7 +1132,20 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = DVS_BUCK_RUN_MASK, .enable_reg = BD718XX_REG_BUCK2_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK2_STARTUP_TIME, + .ramp_delay_table = bd718xx_ramp_delay, + .n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay), + .ramp_reg = BD718XX_REG_BUCK2_CTRL, + .ramp_mask = BUCK_RAMPRATE_MASK, .owner = THIS_MODULE, + .of_parse_cb = buck_set_hw_dvs_levels, + }, + .dvs = { + .level_map = ROHM_DVS_LEVEL_RUN | ROHM_DVS_LEVEL_IDLE, + .run_reg = BD718XX_REG_BUCK2_VOLT_RUN, + .run_mask = DVS_BUCK_RUN_MASK, + .idle_reg = BD718XX_REG_BUCK2_VOLT_IDLE, + .idle_mask = DVS_BUCK_RUN_MASK, }, .init = { .reg = BD718XX_REG_BUCK2_CTRL, @@ -698,7 +1159,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK3"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK3, - .ops = &bd718xx_dvs_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_dvs_buck_volts, @@ -707,7 +1167,18 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = DVS_BUCK_RUN_MASK, .enable_reg = BD71837_REG_BUCK3_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK3_STARTUP_TIME, + .ramp_delay_table = bd718xx_ramp_delay, + .n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay), + .ramp_reg = BD71837_REG_BUCK3_CTRL, + .ramp_mask = BUCK_RAMPRATE_MASK, .owner = THIS_MODULE, + .of_parse_cb = buck_set_hw_dvs_levels, + }, + .dvs = { + .level_map = ROHM_DVS_LEVEL_RUN, + .run_reg = BD71837_REG_BUCK3_VOLT_RUN, + .run_mask = DVS_BUCK_RUN_MASK, }, .init = { .reg = BD71837_REG_BUCK3_CTRL, @@ -721,7 +1192,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK4"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK4, - .ops = &bd718xx_dvs_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_DVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_dvs_buck_volts, @@ -730,7 +1200,18 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = DVS_BUCK_RUN_MASK, .enable_reg = BD71837_REG_BUCK4_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK4_STARTUP_TIME, + .ramp_delay_table = bd718xx_ramp_delay, + .n_ramp_values = ARRAY_SIZE(bd718xx_ramp_delay), + .ramp_reg = BD71837_REG_BUCK4_CTRL, + .ramp_mask = BUCK_RAMPRATE_MASK, .owner = THIS_MODULE, + .of_parse_cb = buck_set_hw_dvs_levels, + }, + .dvs = { + .level_map = ROHM_DVS_LEVEL_RUN, + .run_reg = BD71837_REG_BUCK4_VOLT_RUN, + .run_mask = DVS_BUCK_RUN_MASK, }, .init = { .reg = BD71837_REG_BUCK4_CTRL, @@ -744,7 +1225,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK5"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK5, - .ops = &bd718xx_pickable_range_buck_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71837_BUCK5_VOLTAGE_NUM, .linear_ranges = bd71837_buck5_volts, @@ -754,9 +1234,10 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD71837_BUCK5_MASK, .vsel_range_reg = BD718XX_REG_1ST_NODVS_BUCK_VOLT, .vsel_range_mask = BD71837_BUCK5_RANGE_MASK, - .linear_range_selectors = bd71837_buck5_volt_range_sel, + .linear_range_selectors_bitfield = bd71837_buck5_volt_range_sel, .enable_reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK5_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -771,7 +1252,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK6"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK6, - .ops = &bd718xx_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71837_BUCK6_VOLTAGE_NUM, .linear_ranges = bd71837_buck6_volts, @@ -781,6 +1261,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD71837_BUCK6_MASK, .enable_reg = BD718XX_REG_2ND_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK6_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -795,7 +1276,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK7"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK7, - .ops = &bd718xx_buck_regulator_nolinear_ops, .type = REGULATOR_VOLTAGE, .volt_table = &bd718xx_3rd_nodvs_buck_volts[0], .n_voltages = ARRAY_SIZE(bd718xx_3rd_nodvs_buck_volts), @@ -803,6 +1283,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD718XX_3RD_NODVS_BUCK_MASK, .enable_reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK7_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -817,7 +1298,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("BUCK8"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_BUCK8, - .ops = &bd718xx_buck_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_4TH_NODVS_BUCK_VOLTAGE_NUM, .linear_ranges = bd718xx_4th_nodvs_buck_volts, @@ -827,6 +1307,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD718XX_4TH_NODVS_BUCK_MASK, .enable_reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL, .enable_mask = BD718XX_BUCK_EN, + .enable_time = BD71837_BUCK8_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -841,7 +1322,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO1"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO1, - .ops = &bd718xx_pickable_range_ldo_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO1_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo1_volts, @@ -850,9 +1330,10 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD718XX_LDO1_MASK, .vsel_range_reg = BD718XX_REG_LDO1_VOLT, .vsel_range_mask = BD718XX_LDO1_RANGE_MASK, - .linear_range_selectors = bd718xx_ldo1_volt_range_sel, + .linear_range_selectors_bitfield = bd718xx_ldo1_volt_range_sel, .enable_reg = BD718XX_REG_LDO1_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO1_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -867,7 +1348,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO2"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO2, - .ops = &bd718xx_ldo_regulator_nolinear_ops, .type = REGULATOR_VOLTAGE, .volt_table = &ldo_2_volts[0], .vsel_reg = BD718XX_REG_LDO2_VOLT, @@ -875,6 +1355,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .n_voltages = ARRAY_SIZE(ldo_2_volts), .enable_reg = BD718XX_REG_LDO2_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO2_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -889,7 +1370,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO3"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO3, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO3_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo3_volts, @@ -898,6 +1378,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD718XX_LDO3_MASK, .enable_reg = BD718XX_REG_LDO3_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO3_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -912,7 +1393,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO4"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO4, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO4_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo4_volts, @@ -921,6 +1401,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD718XX_LDO4_MASK, .enable_reg = BD718XX_REG_LDO4_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO4_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -935,7 +1416,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO5"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO5, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71837_LDO5_VOLTAGE_NUM, .linear_ranges = bd71837_ldo5_volts, @@ -946,6 +1426,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD71837_LDO5_MASK, .enable_reg = BD718XX_REG_LDO5_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO5_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -962,7 +1443,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO6"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO6, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD718XX_LDO6_VOLTAGE_NUM, .linear_ranges = bd718xx_ldo6_volts, @@ -973,6 +1453,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD718XX_LDO6_MASK, .enable_reg = BD718XX_REG_LDO6_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO6_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -989,7 +1470,6 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .of_match = of_match_ptr("LDO7"), .regulators_node = of_match_ptr("regulators"), .id = BD718XX_LDO7, - .ops = &bd718xx_ldo_regulator_ops, .type = REGULATOR_VOLTAGE, .n_voltages = BD71837_LDO7_VOLTAGE_NUM, .linear_ranges = bd71837_ldo7_volts, @@ -998,6 +1478,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { .vsel_mask = BD71837_LDO7_MASK, .enable_reg = BD71837_REG_LDO7_VOLT, .enable_mask = BD718XX_LDO_EN, + .enable_time = BD71837_LDO7_STARTUP_TIME, .owner = THIS_MODULE, }, .init = { @@ -1008,133 +1489,346 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { }, }; -struct bd718xx_pmic_inits { - const struct bd718xx_regulator_data *r_datas; - unsigned int r_amount; -}; +static void mark_hw_controlled(struct device *dev, struct device_node *np, + struct bd718xx_regulator_data *reg_data, + unsigned int num_reg_data, int *info) +{ + int i; + + for (i = 1; i <= num_reg_data; i++) { + if (!of_node_name_eq(np, reg_data[i-1].desc.of_match)) + continue; + + *info |= 1 << (i - 1); + dev_dbg(dev, "regulator %d runlevel controlled\n", i); + return; + } + dev_warn(dev, "Bad regulator node\n"); +} + +/* + * Setups where regulator (especially the buck8) output voltage is scaled + * by adding external connection where some other regulator output is connected + * to feedback-pin (over suitable resistors) is getting popular amongst users + * of BD71837. (This allows for example scaling down the buck8 voltages to suit + * lover GPU voltages for projects where buck8 is (ab)used to supply power + * for GPU. Additionally some setups do allow DVS for buck8 but as this do + * produce voltage spikes the HW must be evaluated to be able to survive this + * - hence I keep the DVS disabled for non DVS bucks by default. I don't want + * to help you burn your proto board) + * + * So we allow describing this external connection from DT and scale the + * voltages accordingly. This is what the connection should look like: + * + * |------------| + * | buck 8 |-------+----->Vout + * | | | + * |------------| | + * | FB pin | + * | | + * +-------+--R2---+ + * | + * R1 + * | + * V FB-pull-up + * + * Here the buck output is sifted according to formula: + * + * Vout_o = Vo - (Vpu - Vo)*R2/R1 + * Linear_step = step_orig*(R1+R2)/R1 + * + * where: + * Vout_o is adjusted voltage output at vsel reg value 0 + * Vo is original voltage output at vsel reg value 0 + * Vpu is the pull-up voltage V FB-pull-up in the picture + * R1 and R2 are resistor values. + * + * As a real world example for buck8 and a specific GPU: + * VLDO = 1.6V (used as FB-pull-up) + * R1 = 1000ohms + * R2 = 150ohms + * VSEL 0x0 => 0.8V – (VLDO – 0.8) * R2 / R1 = 0.68V + * Linear Step = 10mV * (R1 + R2) / R1 = 11.5mV + */ +static int setup_feedback_loop(struct device *dev, struct device_node *np, + struct bd718xx_regulator_data *reg_data, + unsigned int num_reg_data, int fb_uv) +{ + int i, r1, r2, ret; + + /* + * We do adjust the values in the global desc based on DT settings. + * This may not be best approach as it can cause problems if more than + * one PMIC is controlled from same processor. I don't see such use-case + * for BD718x7 now - so we spare some bits. + * + * If this will point out to be a problem - then we can allocate new + * bd718xx_regulator_data array at probe and just use the global + * array as a template where we copy initial values. Then we can + * use allocated descs for regultor registration and do IC specific + * modifications to this copy while leaving other PMICs untouched. But + * that means allocating new array for each PMIC - and currently I see + * no need for that. + */ + + for (i = 0; i < num_reg_data; i++) { + struct regulator_desc *desc = ®_data[i].desc; + int j; + + if (!of_node_name_eq(np, desc->of_match)) + continue; + + /* The feedback loop connection does not make sense for LDOs */ + if (desc->id >= BD718XX_LDO1) + return -EINVAL; + + ret = of_property_read_u32(np, "rohm,feedback-pull-up-r1-ohms", + &r1); + if (ret) + return ret; + + if (!r1) + return -EINVAL; + + ret = of_property_read_u32(np, "rohm,feedback-pull-up-r2-ohms", + &r2); + if (ret) + return ret; + + if (desc->n_linear_ranges && desc->linear_ranges) { + struct linear_range *new; + + new = devm_kcalloc(dev, desc->n_linear_ranges, + sizeof(struct linear_range), + GFP_KERNEL); + if (!new) + return -ENOMEM; + + for (j = 0; j < desc->n_linear_ranges; j++) { + int min = desc->linear_ranges[j].min; + int step = desc->linear_ranges[j].step; + + min -= (fb_uv - min)*r2/r1; + step = step * (r1 + r2); + step /= r1; + + new[j].min = min; + new[j].min_sel = desc->linear_ranges[j].min_sel; + new[j].max_sel = desc->linear_ranges[j].max_sel; + new[j].step = step; + + dev_dbg(dev, "%s: old range min %d, step %d\n", + desc->name, desc->linear_ranges[j].min, + desc->linear_ranges[j].step); + dev_dbg(dev, "new range min %d, step %d\n", min, + step); + } + desc->linear_ranges = new; + } + dev_dbg(dev, "regulator '%s' has FB pull-up configured\n", + desc->name); + + return 0; + } + + return -ENODEV; +} + +static int get_special_regulators(struct device *dev, + struct bd718xx_regulator_data *reg_data, + unsigned int num_reg_data, int *info) +{ + int ret; + int uv; + + *info = 0; + + struct device_node *nproot __free(device_node) = of_get_child_by_name(dev->of_node, + "regulators"); + if (!nproot) { + dev_err(dev, "failed to find regulators node\n"); + return -ENODEV; + } + for_each_child_of_node_scoped(nproot, np) { + if (of_property_read_bool(np, "rohm,no-regulator-enable-control")) + mark_hw_controlled(dev, np, reg_data, num_reg_data, + info); + ret = of_property_read_u32(np, "rohm,fb-pull-up-microvolt", + &uv); + if (ret) { + if (ret == -EINVAL) + continue; + else + return ret; + } + + ret = setup_feedback_loop(dev, np, reg_data, num_reg_data, uv); + if (ret) + return ret; + } + + return 0; +} static int bd718xx_probe(struct platform_device *pdev) { - struct bd718xx *mfd; + struct regmap *regmap; struct regulator_config config = { 0 }; - struct bd718xx_pmic_inits pmic_regulators[] = { - [BD718XX_TYPE_BD71837] = { - .r_datas = bd71837_regulators, - .r_amount = ARRAY_SIZE(bd71837_regulators), - }, - [BD718XX_TYPE_BD71847] = { - .r_datas = bd71847_regulators, - .r_amount = ARRAY_SIZE(bd71847_regulators), - }, - }; - - int i, j, err; + int i, j, err, omit_enable; + bool use_snvs; + struct bd718xx_regulator_data *reg_data; + unsigned int num_reg_data; + enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data; + const struct regulator_ops **swops, **hwops; - mfd = dev_get_drvdata(pdev->dev.parent); - if (!mfd) { + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) { dev_err(&pdev->dev, "No MFD driver data\n"); - err = -EINVAL; - goto err; + return -EINVAL; } - if (mfd->chip_type >= BD718XX_TYPE_AMOUNT || - !pmic_regulators[mfd->chip_type].r_datas) { + switch (chip) { + case ROHM_CHIP_TYPE_BD71837: + reg_data = bd71837_regulators; + num_reg_data = ARRAY_SIZE(bd71837_regulators); + swops = &bd71837_swcontrol_ops[0]; + hwops = &bd71837_hwcontrol_ops[0]; + break; + case ROHM_CHIP_TYPE_BD71847: + reg_data = bd71847_regulators; + num_reg_data = ARRAY_SIZE(bd71847_regulators); + swops = &bd71847_swcontrol_ops[0]; + hwops = &bd71847_hwcontrol_ops[0]; + break; + default: dev_err(&pdev->dev, "Unsupported chip type\n"); - err = -EINVAL; - goto err; + return -EINVAL; } /* Register LOCK release */ - err = regmap_update_bits(mfd->regmap, BD718XX_REG_REGLOCK, + err = regmap_update_bits(regmap, BD718XX_REG_REGLOCK, (REGLOCK_PWRSEQ | REGLOCK_VREG), 0); - if (err) { - dev_err(&pdev->dev, "Failed to unlock PMIC (%d)\n", err); - goto err; - } else { - dev_dbg(&pdev->dev, "Unlocked lock register 0x%x\n", - BD718XX_REG_REGLOCK); - } + if (err) + return dev_err_probe(&pdev->dev, err, "Failed to unlock PMIC\n"); - /* At poweroff transition PMIC HW disables EN bit for regulators but - * leaves SEL bit untouched. So if state transition from POWEROFF - * is done to SNVS - then all power rails controlled by SW (having - * SEL bit set) stay disabled as EN is cleared. This may result boot - * failure if any crucial systems are powered by these rails. - * + dev_dbg(&pdev->dev, "Unlocked lock register 0x%x\n", + BD718XX_REG_REGLOCK); + + use_snvs = of_property_read_bool(pdev->dev.parent->of_node, + "rohm,reset-snvs-powered"); + + /* * Change the next stage from poweroff to be READY instead of SNVS * for all reset types because OTP loading at READY will clear SEL * bit allowing HW defaults for power rails to be used */ - err = regmap_update_bits(mfd->regmap, BD718XX_REG_TRANS_COND1, - BD718XX_ON_REQ_POWEROFF_MASK | - BD718XX_SWRESET_POWEROFF_MASK | - BD718XX_WDOG_POWEROFF_MASK | - BD718XX_KEY_L_POWEROFF_MASK, - BD718XX_POWOFF_TO_RDY); - if (err) { - dev_err(&pdev->dev, "Failed to change reset target\n"); - goto err; - } else { + if (!use_snvs) { + err = regmap_update_bits(regmap, BD718XX_REG_TRANS_COND1, + BD718XX_ON_REQ_POWEROFF_MASK | + BD718XX_SWRESET_POWEROFF_MASK | + BD718XX_WDOG_POWEROFF_MASK | + BD718XX_KEY_L_POWEROFF_MASK, + BD718XX_POWOFF_TO_RDY); + if (err) + return dev_err_probe(&pdev->dev, err, + "Failed to change reset target\n"); + dev_dbg(&pdev->dev, "Changed all resets from SVNS to READY\n"); } - for (i = 0; i < pmic_regulators[mfd->chip_type].r_amount; i++) { + config.dev = pdev->dev.parent; + config.regmap = regmap; + /* + * There are cases when we want to leave the enable-control for + * the HW state machine and use this driver only for voltage control. + * One special case is when we use PMIC_STBY_REQ line from SoC to PMIC + * in order to set the system to SUSPEND state. + * + * If regulator is taken under SW control the regulator state will not + * be affected by PMIC state machine - Eg. regulator is likely to stay + * on even in SUSPEND + */ + err = get_special_regulators(pdev->dev.parent, reg_data, num_reg_data, + &omit_enable); + if (err) + return err; - const struct regulator_desc *desc; + for (i = 0; i < num_reg_data; i++) { + + struct regulator_desc *desc; struct regulator_dev *rdev; - const struct bd718xx_regulator_data *r; + struct bd718xx_regulator_data *r; + int no_enable_control = omit_enable & (1 << i); - r = &pmic_regulators[mfd->chip_type].r_datas[i]; + r = ®_data[i]; desc = &r->desc; - config.dev = pdev->dev.parent; - config.regmap = mfd->regmap; + if (no_enable_control) + desc->ops = hwops[i]; + else + desc->ops = swops[i]; rdev = devm_regulator_register(&pdev->dev, desc, &config); - if (IS_ERR(rdev)) { - dev_err(&pdev->dev, - "failed to register %s regulator\n", - desc->name); - err = PTR_ERR(rdev); - goto err; - } - /* Regulator register gets the regulator constraints and + if (IS_ERR(rdev)) + return dev_err_probe(&pdev->dev, PTR_ERR(rdev), + "failed to register %s regulator\n", + desc->name); + + /* + * Regulator register gets the regulator constraints and * applies them (set_machine_constraints). This should have * turned the control register(s) to correct values and we * can now switch the control from PMIC state machine to the * register interface + * + * At poweroff transition PMIC HW disables EN bit for + * regulators but leaves SEL bit untouched. So if state + * transition from POWEROFF is done to SNVS - then all power + * rails controlled by SW (having SEL bit set) stay disabled + * as EN is cleared. This will result boot failure if any + * crucial systems are powered by these rails. We don't + * enable SW control for crucial regulators if snvs state is + * used */ - err = regmap_update_bits(mfd->regmap, r->init.reg, - r->init.mask, r->init.val); - if (err) { - dev_err(&pdev->dev, - "Failed to write BUCK/LDO SEL bit for (%s)\n", - desc->name); - goto err; + if (!no_enable_control && (!use_snvs || + !rdev->constraints->always_on || + !rdev->constraints->boot_on)) { + err = regmap_update_bits(regmap, r->init.reg, + r->init.mask, r->init.val); + if (err) + return dev_err_probe(&pdev->dev, err, + "Failed to take control for (%s)\n", + desc->name); } for (j = 0; j < r->additional_init_amnt; j++) { - err = regmap_update_bits(mfd->regmap, + err = regmap_update_bits(regmap, r->additional_inits[j].reg, r->additional_inits[j].mask, r->additional_inits[j].val); - if (err) { - dev_err(&pdev->dev, + if (err) + return dev_err_probe(&pdev->dev, err, "Buck (%s) initialization failed\n", desc->name); - goto err; - } } } -err: return err; } +static const struct platform_device_id bd718x7_pmic_id[] = { + { "bd71837-pmic", ROHM_CHIP_TYPE_BD71837 }, + { "bd71847-pmic", ROHM_CHIP_TYPE_BD71847 }, + { }, +}; +MODULE_DEVICE_TABLE(platform, bd718x7_pmic_id); + static struct platform_driver bd718xx_regulator = { .driver = { .name = "bd718xx-pmic", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe = bd718xx_probe, + .id_table = bd718x7_pmic_id, }; module_platform_driver(bd718xx_regulator); @@ -1142,3 +1836,4 @@ module_platform_driver(bd718xx_regulator); MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>"); MODULE_DESCRIPTION("BD71837/BD71847 voltage regulator driver"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:bd718xx-pmic"); |