From a27e71a66ee0f887fefcc31b85a804b0905fa865 Mon Sep 17 00:00:00 2001 From: Cristian Ciocaltea Date: Thu, 6 Apr 2023 22:41:58 +0300 Subject: regulator: fan53555: Add support for RK860X Extend the existing fan53555 driver to support the Rockchip RK860X regulators. RK8600/RK8601 are pretty similar to the FAN53555 regulators. RK8602/RK8603 are a bit different, having a wider output voltage selection range, from 0.5 V to 1.5 V in 6.25 mV steps. They also use additional VSEL0/VSEL1 registers for the voltage selector, but the enable and mode bits are still located in the original FAN53555 specific VSEL0/VSEL1 registers. Signed-off-by: Cristian Ciocaltea Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20230406194158.963352-9-cristian.ciocaltea@collabora.com Signed-off-by: Mark Brown --- drivers/regulator/fan53555.c | 121 +++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 118 insertions(+), 3 deletions(-) (limited to 'drivers/regulator') diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c index 7e54518c0708..4b8655778177 100644 --- a/drivers/regulator/fan53555.c +++ b/drivers/regulator/fan53555.c @@ -26,6 +26,9 @@ #define FAN53555_VSEL0 0x00 #define FAN53555_VSEL1 0x01 +#define RK8602_VSEL0 0x06 +#define RK8602_VSEL1 0x07 + #define TCS4525_VSEL0 0x11 #define TCS4525_VSEL1 0x10 #define TCS4525_TIME 0x13 @@ -55,6 +58,7 @@ #define FAN53555_NVOLTAGES 64 /* Numbers of voltages */ #define FAN53526_NVOLTAGES 128 +#define RK8602_NVOLTAGES 160 #define TCS_VSEL0_MODE BIT(7) #define TCS_VSEL1_MODE BIT(6) @@ -64,6 +68,8 @@ enum fan53555_vendor { FAN53526_VENDOR_FAIRCHILD = 0, FAN53555_VENDOR_FAIRCHILD, + FAN53555_VENDOR_ROCKCHIP, /* RK8600, RK8601 */ + RK8602_VENDOR_ROCKCHIP, /* RK8602, RK8603 */ FAN53555_VENDOR_SILERGY, FAN53526_VENDOR_TCS, }; @@ -87,6 +93,14 @@ enum { FAN53555_CHIP_ID_08 = 8, }; +enum { + RK8600_CHIP_ID_08 = 8, /* RK8600, RK8601 */ +}; + +enum { + RK8602_CHIP_ID_10 = 10, /* RK8602, RK8603 */ +}; + enum { TCS4525_CHIP_ID_12 = 12, }; @@ -117,6 +131,8 @@ struct fan53555_device_info { /* Voltage setting register */ unsigned int vol_reg; unsigned int sleep_reg; + unsigned int en_reg; + unsigned int sleep_en_reg; /* Voltage range and step(linear) */ unsigned int vsel_min; unsigned int vsel_step; @@ -159,7 +175,7 @@ static int fan53555_set_suspend_enable(struct regulator_dev *rdev) { struct fan53555_device_info *di = rdev_get_drvdata(rdev); - return regmap_update_bits(rdev->regmap, di->sleep_reg, + return regmap_update_bits(rdev->regmap, di->sleep_en_reg, VSEL_BUCK_EN, VSEL_BUCK_EN); } @@ -167,7 +183,7 @@ static int fan53555_set_suspend_disable(struct regulator_dev *rdev) { struct fan53555_device_info *di = rdev_get_drvdata(rdev); - return regmap_update_bits(rdev->regmap, di->sleep_reg, + return regmap_update_bits(rdev->regmap, di->sleep_en_reg, VSEL_BUCK_EN, 0); } @@ -317,6 +333,50 @@ static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di) return 0; } +static int fan53555_voltages_setup_rockchip(struct fan53555_device_info *di) +{ + /* Init voltage range and step */ + switch (di->chip_id) { + case RK8600_CHIP_ID_08: + di->vsel_min = 712500; + di->vsel_step = 12500; + break; + default: + dev_err(di->dev, + "Chip ID %d not supported!\n", di->chip_id); + return -EINVAL; + } + di->slew_reg = FAN53555_CONTROL; + di->slew_mask = CTL_SLEW_MASK; + di->ramp_delay_table = slew_rates; + di->n_ramp_values = ARRAY_SIZE(slew_rates); + di->vsel_count = FAN53555_NVOLTAGES; + + return 0; +} + +static int rk8602_voltages_setup_rockchip(struct fan53555_device_info *di) +{ + /* Init voltage range and step */ + switch (di->chip_id) { + case RK8602_CHIP_ID_10: + di->vsel_min = 500000; + di->vsel_step = 6250; + break; + default: + dev_err(di->dev, + "Chip ID %d not supported!\n", di->chip_id); + return -EINVAL; + } + di->slew_reg = FAN53555_CONTROL; + di->slew_mask = CTL_SLEW_MASK; + di->ramp_delay_table = slew_rates; + di->n_ramp_values = ARRAY_SIZE(slew_rates); + di->vsel_count = RK8602_NVOLTAGES; + + return 0; +} + static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di) { /* Init voltage range and step */ @@ -377,6 +437,7 @@ static int fan53555_device_setup(struct fan53555_device_info *di, switch (di->vendor) { case FAN53526_VENDOR_FAIRCHILD: case FAN53555_VENDOR_FAIRCHILD: + case FAN53555_VENDOR_ROCKCHIP: case FAN53555_VENDOR_SILERGY: switch (pdata->sleep_vsel_id) { case FAN53555_VSEL_ID_0: @@ -391,6 +452,27 @@ static int fan53555_device_setup(struct fan53555_device_info *di, dev_err(di->dev, "Invalid VSEL ID!\n"); return -EINVAL; } + di->sleep_en_reg = di->sleep_reg; + di->en_reg = di->vol_reg; + break; + case RK8602_VENDOR_ROCKCHIP: + switch (pdata->sleep_vsel_id) { + case FAN53555_VSEL_ID_0: + di->sleep_reg = RK8602_VSEL0; + di->vol_reg = RK8602_VSEL1; + di->sleep_en_reg = FAN53555_VSEL0; + di->en_reg = FAN53555_VSEL1; + break; + case FAN53555_VSEL_ID_1: + di->sleep_reg = RK8602_VSEL1; + di->vol_reg = RK8602_VSEL0; + di->sleep_en_reg = FAN53555_VSEL1; + di->en_reg = FAN53555_VSEL0; + break; + default: + dev_err(di->dev, "Invalid VSEL ID!\n"); + return -EINVAL; + } break; case FAN53526_VENDOR_TCS: switch (pdata->sleep_vsel_id) { @@ -406,6 +488,8 @@ static int fan53555_device_setup(struct fan53555_device_info *di, dev_err(di->dev, "Invalid VSEL ID!\n"); return -EINVAL; } + di->sleep_en_reg = di->sleep_reg; + di->en_reg = di->vol_reg; break; default: dev_err(di->dev, "vendor %d not supported!\n", di->vendor); @@ -427,10 +511,23 @@ static int fan53555_device_setup(struct fan53555_device_info *di, } break; case FAN53555_VENDOR_FAIRCHILD: + case FAN53555_VENDOR_ROCKCHIP: case FAN53555_VENDOR_SILERGY: di->mode_reg = di->vol_reg; di->mode_mask = VSEL_MODE; break; + case RK8602_VENDOR_ROCKCHIP: + di->mode_mask = VSEL_MODE; + + switch (pdata->sleep_vsel_id) { + case FAN53555_VSEL_ID_0: + di->mode_reg = FAN53555_VSEL1; + break; + case FAN53555_VSEL_ID_1: + di->mode_reg = FAN53555_VSEL0; + break; + } + break; case FAN53526_VENDOR_TCS: di->mode_reg = TCS4525_COMMAND; @@ -456,6 +553,12 @@ static int fan53555_device_setup(struct fan53555_device_info *di, case FAN53555_VENDOR_FAIRCHILD: ret = fan53555_voltages_setup_fairchild(di); break; + case FAN53555_VENDOR_ROCKCHIP: + ret = fan53555_voltages_setup_rockchip(di); + break; + case RK8602_VENDOR_ROCKCHIP: + ret = rk8602_voltages_setup_rockchip(di); + break; case FAN53555_VENDOR_SILERGY: ret = fan53555_voltages_setup_silergy(di); break; @@ -481,7 +584,7 @@ static int fan53555_regulator_register(struct fan53555_device_info *di, rdesc->ops = &fan53555_regulator_ops; rdesc->type = REGULATOR_VOLTAGE; rdesc->n_voltages = di->vsel_count; - rdesc->enable_reg = di->vol_reg; + rdesc->enable_reg = di->en_reg; rdesc->enable_mask = VSEL_BUCK_EN; rdesc->min_uV = di->vsel_min; rdesc->uV_step = di->vsel_step; @@ -531,6 +634,12 @@ static const struct of_device_id __maybe_unused fan53555_dt_ids[] = { }, { .compatible = "fcs,fan53555", .data = (void *)FAN53555_VENDOR_FAIRCHILD + }, { + .compatible = "rockchip,rk8600", + .data = (void *)FAN53555_VENDOR_ROCKCHIP + }, { + .compatible = "rockchip,rk8602", + .data = (void *)RK8602_VENDOR_ROCKCHIP }, { .compatible = "silergy,syr827", .data = (void *)FAN53555_VENDOR_SILERGY, @@ -637,6 +746,12 @@ static const struct i2c_device_id fan53555_id[] = { }, { .name = "fan53555", .driver_data = FAN53555_VENDOR_FAIRCHILD + }, { + .name = "rk8600", + .driver_data = FAN53555_VENDOR_ROCKCHIP + }, { + .name = "rk8602", + .driver_data = RK8602_VENDOR_ROCKCHIP }, { .name = "syr827", .driver_data = FAN53555_VENDOR_SILERGY -- cgit v1.2.3