diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 2 | ||||
| -rw-r--r-- | drivers/regulator/mp5416.c | 30 | ||||
| -rw-r--r-- | drivers/regulator/mt6370-regulator.c | 390 | ||||
| -rw-r--r-- | drivers/regulator/qcom_smd-regulator.c | 1 | ||||
| -rw-r--r-- | drivers/regulator/rpi-panel-attiny-regulator.c | 6 | ||||
| -rw-r--r-- | drivers/regulator/rt5120-regulator.c | 420 | ||||
| -rw-r--r-- | drivers/regulator/rt5190a-regulator.c | 3 | ||||
| -rw-r--r-- | drivers/regulator/scmi-regulator.c | 1 |
9 files changed, 860 insertions, 11 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index cbe0f96ca342..03e8a4ef2ed6 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -804,6 +804,14 @@ config REGULATOR_MT6360 2-channel buck with Thermal Shutdown and Overload Protection 6-channel High PSRR and Low Dropout LDO. +config REGULATOR_MT6370 + tristate "MT6370 SubPMIC Regulator" + depends on MFD_MT6370 + help + Say Y here to enable MT6370 regulator support. + This driver supports the control for DisplayBias voltages and one + general purpose LDO which is commonly used to drive the vibrator. + config REGULATOR_MT6380 tristate "MediaTek MT6380 PMIC" depends on MTK_PMIC_WRAP @@ -1047,6 +1055,16 @@ config REGULATOR_RT5033 RT5033 PMIC. The device supports multiple regulators like current source, LDO and Buck. +config REGULATOR_RT5120 + tristate "Richtek RT5120 PMIC Regulators" + depends on MFD_RT5120 + help + This adds support for voltage regulator in Richtek RT5120 PMIC. + It integrates 4 channels buck controller, 1 channel LDO, 1 EXTEN + to control external power source. Only BUCK1 is adjustable from + 600mV to 1395mV, per step 6.250mV. The others are all fixed voltage + by external hardware circuit. + config REGULATOR_RT5190A tristate "Richtek RT5190A PMIC" depends on I2C diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 8d3ee8b6d41d..a9c392587120 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -97,6 +97,7 @@ obj-$(CONFIG_REGULATOR_MT6323) += mt6323-regulator.o obj-$(CONFIG_REGULATOR_MT6358) += mt6358-regulator.o obj-$(CONFIG_REGULATOR_MT6359) += mt6359-regulator.o obj-$(CONFIG_REGULATOR_MT6360) += mt6360-regulator.o +obj-$(CONFIG_REGULATOR_MT6370) += mt6370-regulator.o obj-$(CONFIG_REGULATOR_MT6380) += mt6380-regulator.o obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o obj-$(CONFIG_REGULATOR_MTK_DVFSRC) += mtk-dvfsrc-regulator.o @@ -126,6 +127,7 @@ obj-$(CONFIG_REGULATOR_ROHM) += rohm-regulator.o obj-$(CONFIG_REGULATOR_RT4801) += rt4801-regulator.o obj-$(CONFIG_REGULATOR_RT4831) += rt4831-regulator.o obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o +obj-$(CONFIG_REGULATOR_RT5120) += rt5120-regulator.o obj-$(CONFIG_REGULATOR_RT5190A) += rt5190a-regulator.o obj-$(CONFIG_REGULATOR_RT5759) += rt5759-regulator.o obj-$(CONFIG_REGULATOR_RT6160) += rt6160-regulator.o diff --git a/drivers/regulator/mp5416.c b/drivers/regulator/mp5416.c index 39cebec0edb6..82892d71c2c9 100644 --- a/drivers/regulator/mp5416.c +++ b/drivers/regulator/mp5416.c @@ -6,14 +6,14 @@ // // Author: Saravanan Sekar <sravanhome@gmail.com> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> #include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> -#include <linux/i2c.h> #define MP5416_REG_CTL0 0x00 #define MP5416_REG_CTL1 0x01 @@ -174,10 +174,22 @@ static struct regulator_desc mp5416_regulators_desc[MP5416_MAX_REGULATORS] = { MP5416LDO("ldo4", 4, BIT(1)), }; +static struct regulator_desc mp5496_regulators_desc[MP5416_MAX_REGULATORS] = { + MP5416BUCK("buck1", 1, mp5416_I_limits1, MP5416_REG_CTL1, BIT(0), 1), + MP5416BUCK("buck2", 2, mp5416_I_limits2, MP5416_REG_CTL1, BIT(1), 1), + MP5416BUCK("buck3", 3, mp5416_I_limits1, MP5416_REG_CTL1, BIT(2), 1), + MP5416BUCK("buck4", 4, mp5416_I_limits2, MP5416_REG_CTL2, BIT(5), 1), + MP5416LDO("ldo1", 1, BIT(4)), + MP5416LDO("ldo2", 2, BIT(3)), + MP5416LDO("ldo3", 3, BIT(2)), + MP5416LDO("ldo4", 4, BIT(1)), +}; + static int mp5416_i2c_probe(struct i2c_client *client) { struct device *dev = &client->dev; struct regulator_config config = { NULL, }; + static const struct regulator_desc *desc; struct regulator_dev *rdev; struct regmap *regmap; int i; @@ -188,12 +200,16 @@ static int mp5416_i2c_probe(struct i2c_client *client) return PTR_ERR(regmap); } + desc = of_device_get_match_data(dev); + if (!desc) + return -ENODEV; + config.dev = dev; config.regmap = regmap; for (i = 0; i < MP5416_MAX_REGULATORS; i++) { rdev = devm_regulator_register(dev, - &mp5416_regulators_desc[i], + &desc[i], &config); if (IS_ERR(rdev)) { dev_err(dev, "Failed to register regulator!\n"); @@ -205,13 +221,15 @@ static int mp5416_i2c_probe(struct i2c_client *client) } static const struct of_device_id mp5416_of_match[] = { - { .compatible = "mps,mp5416" }, + { .compatible = "mps,mp5416", .data = &mp5416_regulators_desc }, + { .compatible = "mps,mp5496", .data = &mp5496_regulators_desc }, {}, }; MODULE_DEVICE_TABLE(of, mp5416_of_match); static const struct i2c_device_id mp5416_id[] = { { "mp5416", }, + { "mp5496", }, { }, }; MODULE_DEVICE_TABLE(i2c, mp5416_id); diff --git a/drivers/regulator/mt6370-regulator.c b/drivers/regulator/mt6370-regulator.c new file mode 100644 index 000000000000..e73f5a46cb9a --- /dev/null +++ b/drivers/regulator/mt6370-regulator.c @@ -0,0 +1,390 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/bits.h> +#include <linux/gpio/consumer.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> + +enum { + MT6370_IDX_DSVBOOST = 0, + MT6370_IDX_DSVPOS, + MT6370_IDX_DSVNEG, + MT6370_IDX_VIBLDO, + MT6370_MAX_IDX +}; + +#define MT6370_REG_LDO_CFG 0x180 +#define MT6370_REG_LDO_VOUT 0x181 +#define MT6370_REG_DB_CTRL1 0x1B0 +#define MT6370_REG_DB_CTRL2 0x1B1 +#define MT6370_REG_DB_VBST 0x1B2 +#define MT6370_REG_DB_VPOS 0x1B3 +#define MT6370_REG_DB_VNEG 0x1B4 +#define MT6370_REG_LDO_STAT 0x1DC +#define MT6370_REG_DB_STAT 0x1DF + +#define MT6370_LDOOMS_MASK BIT(7) +#define MT6370_LDOEN_MASK BIT(7) +#define MT6370_LDOVOUT_MASK GENMASK(3, 0) +#define MT6370_DBPERD_MASK (BIT(7) | BIT(4)) +#define MT6370_DBEXTEN_MASK BIT(0) +#define MT6370_DBVPOSEN_MASK BIT(6) +#define MT6370_DBVPOSDISG_MASK BIT(5) +#define MT6370_DBVNEGEN_MASK BIT(3) +#define MT6370_DBVNEGDISG_MASK BIT(2) +#define MT6370_DBALLON_MASK (MT6370_DBVPOSEN_MASK | MT6370_DBVNEGEN_MASK) +#define MT6370_DBSLEW_MASK GENMASK(7, 6) +#define MT6370_DBVOUT_MASK GENMASK(5, 0) +#define MT6370_LDOOC_EVT_MASK BIT(7) +#define MT6370_POSSCP_EVT_MASK BIT(7) +#define MT6370_NEGSCP_EVT_MASK BIT(6) +#define MT6370_BSTOCP_EVT_MASK BIT(5) +#define MT6370_POSOCP_EVT_MASK BIT(4) +#define MT6370_NEGOCP_EVT_MASK BIT(3) + +#define MT6370_LDO_MINUV 1600000 +#define MT6370_LDO_STPUV 200000 +#define MT6370_LDO_N_VOLT 13 +#define MT6370_DBVBOOST_MINUV 4000000 +#define MT6370_DBVBOOST_STPUV 50000 +#define MT6370_DBVBOOST_N_VOLT 45 +#define MT6370_DBVOUT_MINUV 4000000 +#define MT6370_DBVOUT_STPUV 50000 +#define MT6370_DBVOUT_N_VOLT 41 + +struct mt6370_priv { + struct device *dev; + struct regmap *regmap; + struct regulator_dev *rdev[MT6370_MAX_IDX]; + bool use_external_ctrl; +}; + +static const unsigned int mt6370_vpos_ramp_tbl[] = { 8540, 5840, 4830, 3000 }; +static const unsigned int mt6370_vneg_ramp_tbl[] = { 10090, 6310, 5050, 3150 }; + +static int mt6370_get_error_flags(struct regulator_dev *rdev, + unsigned int *flags) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + unsigned int stat_reg, stat, rpt_flags = 0; + int rid = rdev_get_id(rdev), ret; + + if (rid == MT6370_IDX_VIBLDO) + stat_reg = MT6370_REG_LDO_STAT; + else + stat_reg = MT6370_REG_DB_STAT; + + ret = regmap_read(regmap, stat_reg, &stat); + if (ret) + return ret; + + switch (rid) { + case MT6370_IDX_DSVBOOST: + if (stat & MT6370_BSTOCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + case MT6370_IDX_DSVPOS: + if (stat & MT6370_POSSCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; + + if (stat & MT6370_POSOCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + case MT6370_IDX_DSVNEG: + if (stat & MT6370_NEGSCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; + + if (stat & MT6370_NEGOCP_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + default: + if (stat & MT6370_LDOOC_EVT_MASK) + rpt_flags |= REGULATOR_ERROR_OVER_CURRENT; + break; + } + + *flags = rpt_flags; + return 0; +} + +static const struct regulator_ops mt6370_dbvboost_ops = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .get_bypass = regulator_get_bypass_regmap, + .set_bypass = regulator_set_bypass_regmap, + .get_error_flags = mt6370_get_error_flags, +}; + +static const struct regulator_ops mt6370_dbvout_ops = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .set_ramp_delay = regulator_set_ramp_delay_regmap, + .get_error_flags = mt6370_get_error_flags, +}; + +static const struct regulator_ops mt6370_ldo_ops = { + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .list_voltage = regulator_list_voltage_linear, + .is_enabled = regulator_is_enabled_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .get_error_flags = mt6370_get_error_flags, +}; + +static int mt6370_of_parse_cb(struct device_node *np, + const struct regulator_desc *desc, + struct regulator_config *config) +{ + struct mt6370_priv *priv = config->driver_data; + struct gpio_desc *enable_gpio; + int ret; + + enable_gpio = fwnode_gpiod_get_index(of_fwnode_handle(np), "enable", 0, + GPIOD_OUT_HIGH | + GPIOD_FLAGS_BIT_NONEXCLUSIVE, + desc->name); + if (IS_ERR(enable_gpio)) { + config->ena_gpiod = NULL; + return 0; + } + + /* + * RG control by default + * Only if all are using external pin, change all by external control + */ + if (priv->use_external_ctrl) { + ret = regmap_update_bits(priv->regmap, MT6370_REG_DB_CTRL1, + MT6370_DBEXTEN_MASK, + MT6370_DBEXTEN_MASK); + if (ret) + return ret; + } + + config->ena_gpiod = enable_gpio; + priv->use_external_ctrl = true; + return 0; +} + +static const struct regulator_desc mt6370_regulator_descs[] = { + { + .name = "mt6370-dsv-vbst", + .of_match = of_match_ptr("dsvbst"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_DSVBOOST, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &mt6370_dbvboost_ops, + .min_uV = MT6370_DBVBOOST_MINUV, + .uV_step = MT6370_DBVBOOST_STPUV, + .n_voltages = MT6370_DBVBOOST_N_VOLT, + .vsel_reg = MT6370_REG_DB_VBST, + .vsel_mask = MT6370_DBVOUT_MASK, + .bypass_reg = MT6370_REG_DB_CTRL1, + .bypass_mask = MT6370_DBPERD_MASK, + .bypass_val_on = MT6370_DBPERD_MASK, + }, + { + .name = "mt6370-dsv-vpos", + .of_match = of_match_ptr("dsvpos"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_DSVPOS, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .of_parse_cb = mt6370_of_parse_cb, + .ops = &mt6370_dbvout_ops, + .min_uV = MT6370_DBVOUT_MINUV, + .uV_step = MT6370_DBVOUT_STPUV, + .n_voltages = MT6370_DBVOUT_N_VOLT, + .vsel_reg = MT6370_REG_DB_VPOS, + .vsel_mask = MT6370_DBVOUT_MASK, + .enable_reg = MT6370_REG_DB_CTRL2, + .enable_mask = MT6370_DBVPOSEN_MASK, + .ramp_reg = MT6370_REG_DB_VPOS, + .ramp_mask = MT6370_DBSLEW_MASK, + .ramp_delay_table = mt6370_vpos_ramp_tbl, + .n_ramp_values = ARRAY_SIZE(mt6370_vpos_ramp_tbl), + .active_discharge_reg = MT6370_REG_DB_CTRL2, + .active_discharge_mask = MT6370_DBVPOSDISG_MASK, + .active_discharge_on = MT6370_DBVPOSDISG_MASK, + }, + { + .name = "mt6370-dsv-vneg", + .of_match = of_match_ptr("dsvneg"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_DSVNEG, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .of_parse_cb = mt6370_of_parse_cb, + .ops = &mt6370_dbvout_ops, + .min_uV = MT6370_DBVOUT_MINUV, + .uV_step = MT6370_DBVOUT_STPUV, + .n_voltages = MT6370_DBVOUT_N_VOLT, + .vsel_reg = MT6370_REG_DB_VNEG, + .vsel_mask = MT6370_DBVOUT_MASK, + .enable_reg = MT6370_REG_DB_CTRL2, + .enable_mask = MT6370_DBVNEGEN_MASK, + .ramp_reg = MT6370_REG_DB_VNEG, + .ramp_mask = MT6370_DBSLEW_MASK, + .ramp_delay_table = mt6370_vneg_ramp_tbl, + .n_ramp_values = ARRAY_SIZE(mt6370_vneg_ramp_tbl), + .active_discharge_reg = MT6370_REG_DB_CTRL2, + .active_discharge_mask = MT6370_DBVNEGDISG_MASK, + .active_discharge_on = MT6370_DBVNEGDISG_MASK, + }, + { + .name = "mt6370-vib-ldo", + .of_match = of_match_ptr("vibldo"), + .regulators_node = of_match_ptr("regulators"), + .id = MT6370_IDX_VIBLDO, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .ops = &mt6370_ldo_ops, + .min_uV = MT6370_LDO_MINUV, + .uV_step = MT6370_LDO_STPUV, + .n_voltages = MT6370_LDO_N_VOLT, + .vsel_reg = MT6370_REG_LDO_VOUT, + .vsel_mask = MT6370_LDOVOUT_MASK, + .enable_reg = MT6370_REG_LDO_VOUT, + .enable_mask = MT6370_LDOEN_MASK, + .active_discharge_reg = MT6370_REG_LDO_CFG, + .active_discharge_mask = MT6370_LDOOMS_MASK, + .active_discharge_on = MT6370_LDOOMS_MASK, + } +}; + +static irqreturn_t mt6370_scp_handler(int irq, void *data) +{ + struct regulator_dev *rdev = data; + + regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, + NULL); + return IRQ_HANDLED; +} + +static irqreturn_t mt6370_ocp_handler(int irq, void *data) +{ + struct regulator_dev *rdev = data; + + regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL); + return IRQ_HANDLED; +} + +static int mt6370_regulator_irq_register(struct mt6370_priv *priv) +{ + struct platform_device *pdev = to_platform_device(priv->dev); + static const struct { + const char *name; + int rid; + irq_handler_t handler; + } mt6370_irqs[] = { + { "db_vpos_scp", MT6370_IDX_DSVPOS, mt6370_scp_handler }, + { "db_vneg_scp", MT6370_IDX_DSVNEG, mt6370_scp_handler }, + { "db_vbst_ocp", MT6370_IDX_DSVBOOST, mt6370_ocp_handler }, + { "db_vpos_ocp", MT6370_IDX_DSVPOS, mt6370_ocp_handler }, + { "db_vneg_ocp", MT6370_IDX_DSVNEG, mt6370_ocp_handler }, + { "ldo_oc", MT6370_IDX_VIBLDO, mt6370_ocp_handler } + }; + struct regulator_dev *rdev; + int i, irq, ret; + + for (i = 0; i < ARRAY_SIZE(mt6370_irqs); i++) { + irq = platform_get_irq_byname(pdev, mt6370_irqs[i].name); + + rdev = priv->rdev[mt6370_irqs[i].rid]; + + ret = devm_request_threaded_irq(priv->dev, irq, NULL, + mt6370_irqs[i].handler, 0, + mt6370_irqs[i].name, rdev); + if (ret) { + dev_err(priv->dev, + "Failed to register (%d) interrupt\n", i); + return ret; + } + } + + return 0; +} + +static int mt6370_regualtor_register(struct mt6370_priv *priv) +{ + struct regulator_dev *rdev; + struct regulator_config cfg = {}; + struct device *parent = priv->dev->parent; + int i; + + cfg.dev = parent; + cfg.driver_data = priv; + + for (i = 0; i < MT6370_MAX_IDX; i++) { + rdev = devm_regulator_register(priv->dev, + mt6370_regulator_descs + i, + &cfg); + if (IS_ERR(rdev)) { + dev_err(priv->dev, + "Failed to register (%d) regulator\n", i); + return PTR_ERR(rdev); + } + + priv->rdev[i] = rdev; + } + + return 0; +} + +static int mt6370_regulator_probe(struct platform_device *pdev) +{ + struct mt6370_priv *priv; + int ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to init regmap\n"); + return -ENODEV; + } + + ret = mt6370_regualtor_register(priv); + if (ret) + return ret; + + return mt6370_regulator_irq_register(priv); +} + +static const struct platform_device_id mt6370_devid_table[] = { + { "mt6370-regulator", 0}, + {} +}; +MODULE_DEVICE_TABLE(platform, mt6370_devid_table); + +static struct platform_driver mt6370_regulator_driver = { + .driver = { + .name = "mt6370-regulator", + }, + .id_table = mt6370_devid_table, + .probe = mt6370_regulator_probe, +}; +module_platform_driver(mt6370_regulator_driver); + +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); +MODULE_DESCRIPTION("Mediatek MT6370 Regulator Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qcom_smd-regulator.c index 6b8cf7073e9b..59024c639141 100644 --- a/drivers/regulator/qcom_smd-regulator.c +++ b/drivers/regulator/qcom_smd-regulator.c @@ -205,6 +205,7 @@ static const struct regulator_ops rpm_mp5496_ops = { .is_enabled = rpm_reg_is_enabled, .list_voltage = regulator_list_voltage_linear_range, + .get_voltage = rpm_reg_get_voltage, .set_voltage = rpm_reg_set_voltage, }; diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c index fa8706a352ce..105f694a67e6 100644 --- a/drivers/regulator/rpi-panel-attiny-regulator.c +++ b/drivers/regulator/rpi-panel-attiny-regulator.c @@ -187,15 +187,11 @@ static int attiny_update_status(struct backlight_device *bl) { struct attiny_lcd *state = bl_get_data(bl); struct regmap *regmap = state->regmap; - int brightness = bl->props.brightness; + int brightness = backlight_get_brightness(bl); int ret, i; mutex_lock(&state->lock); - if (bl->props.power != FB_BLANK_UNBLANK || - bl->props.fb_blank != FB_BLANK_UNBLANK) - brightness = 0; - for (i = 0; i < 10; i++) { ret = regmap_write(regmap, REG_PWM, brightness); if (!ret) diff --git a/drivers/regulator/rt5120-regulator.c b/drivers/regulator/rt5120-regulator.c new file mode 100644 index 000000000000..8173ede09414 --- /dev/null +++ b/drivers/regulator/rt5120-regulator.c @@ -0,0 +1,420 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/bits.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> + +#define RT5120_REG_PGSTAT 0x03 +#define RT5120_REG_CH1VID 0x06 +#define RT5120_REG_CH1SLPVID 0x07 +#define RT5120_REG_ENABLE 0x08 +#define RT5120_REG_MODECTL 0x09 +#define RT5120_REG_UVOVPROT 0x0A +#define RT5120_REG_SLPCTL 0x0C +#define RT5120_REG_INTSTAT 0x1E +#define RT5120_REG_DISCHG 0x1F + +#define RT5120_OUTPG_MASK(rid) BIT(rid + 1) +#define RT5120_OUTUV_MASK(rid) BIT(rid + 9) +#define RT5120_OUTOV_MASK(rid) BIT(rid + 16) +#define RT5120_CH1VID_MASK GENMASK(6, 0) +#define RT5120_RIDEN_MASK(rid) BIT(rid + 1) +#define RT5120_RADEN_MASK(rid) BIT(rid) +#define RT5120_FPWM_MASK(rid) BIT(rid + 1) +#define RT5120_UVHICCUP_MASK BIT(1) +#define RT5120_OVHICCUP_MASK BIT(0) +#define RT5120_HOTDIE_MASK BIT(1) + +#define RT5120_BUCK1_MINUV 600000 +#define RT5120_BUCK1_MAXUV 1393750 +#define RT5120_BUCK1_STEPUV 6250 +#define RT5120_BUCK1_NUM_VOLT 0x80 + +#define RT5120_AUTO_MODE 0 +#define RT5120_FPWM_MODE 1 + +enum { + RT5120_REGULATOR_BUCK1 = 0, + RT5120_REGULATOR_BUCK2, + RT5120_REGULATOR_BUCK3, + RT5120_REGULATOR_BUCK4, + RT5120_REGULATOR_LDO, + RT5120_REGULATOR_EXTEN, + RT5120_MAX_REGULATOR +}; + +struct rt5120_priv { + struct device *dev; + struct regmap *regmap; + struct regulator_desc rdesc[RT5120_MAX_REGULATOR]; +}; + +static int rt5120_buck_set_mode(struct regulator_dev *rdev, unsigned int mode) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + int rid = rdev_get_id(rdev); + unsigned int mask = RT5120_FPWM_MASK(rid), val; + + switch (mode) { + case REGULATOR_MODE_NORMAL: + val = 0; + break; + case REGULATOR_MODE_FAST: + val = RT5120_FPWM_MASK(rid); + break; + default: + return -EINVAL; + } + + return regmap_update_bits(regmap, RT5120_REG_MODECTL, mask, val); +} + +static unsigned int rt5120_buck_get_mode(struct regulator_dev *rdev) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + int ret, rid = rdev_get_id(rdev); + unsigned int val; + + ret = regmap_read(regmap, RT5120_REG_MODECTL, &val); + if (ret) + return REGULATOR_MODE_INVALID; + + if (val & RT5120_FPWM_MASK(rid)) + return REGULATOR_MODE_FAST; + + return REGULATOR_MODE_NORMAL; +} + +static int rt5120_regulator_get_error_flags(struct regulator_dev *rdev, + unsigned int *flags) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + unsigned int stat, hd_stat, cur_flags = 0; + int rid = rdev_get_id(rdev), ret; + + /* + * reg 0x03/0x04/0x05 to indicate PG/UV/OV + * use block read to descrease I/O xfer time + */ + ret = regmap_raw_read(regmap, RT5120_REG_PGSTAT, &stat, 3); + if (ret) + return ret; + + ret = regmap_read(regmap, RT5120_REG_INTSTAT, &hd_stat); + if (ret) + return ret; + + if (!(stat & RT5120_OUTPG_MASK(rid))) { + if (stat & RT5120_OUTUV_MASK(rid)) + cur_flags |= REGULATOR_ERROR_UNDER_VOLTAGE; + + if (stat & RT5120_OUTOV_MASK(rid)) + cur_flags |= REGULATOR_ERROR_REGULATION_OUT; + } + + if (hd_stat & RT5120_HOTDIE_MASK) + cur_flags |= REGULATOR_ERROR_OVER_TEMP; + + *flags = cur_flags; + return 0; +} + +static int rt5120_buck1_set_suspend_voltage(struct regulator_dev *rdev, int uV) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + int sel; + + if (uV < RT5120_BUCK1_MINUV || uV > RT5120_BUCK1_MAXUV) + return -EINVAL; + + sel = (uV - RT5120_BUCK1_MINUV) / RT5120_BUCK1_STEPUV; + return regmap_write(regmap, RT5120_REG_CH1SLPVID, sel); +} + +static int rt5120_regulator_set_suspend_enable(struct regulator_dev *rdev) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + int rid = rdev_get_id(rdev); + unsigned int mask = RT5120_RIDEN_MASK(rid); + + return regmap_update_bits(regmap, RT5120_REG_SLPCTL, mask, mask); +} + +static int rt5120_regulator_set_suspend_disable(struct regulator_dev *rdev) +{ + struct regmap *regmap = rdev_get_regmap(rdev); + int rid = rdev_get_id(rdev); + unsigned int mask = RT5120_RIDEN_MASK(rid); + + return regmap_update_bits(regmap, RT5120_REG_SLPCTL, mask, 0); +} + +static const struct regulator_ops rt5120_buck1_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .list_voltage = regulator_list_voltage_linear, + .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_mode = rt5120_buck_set_mode, + .get_mode = rt5120_buck_get_mode, + .get_error_flags = rt5120_regulator_get_error_flags, + .set_suspend_voltage = rt5120_buck1_set_suspend_voltage, + .set_suspend_enable = rt5120_regulator_set_suspend_enable, + .set_suspend_disable = rt5120_regulator_set_suspend_disable, +}; + +static const struct regulator_ops rt5120_buck234_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .set_mode = rt5120_buck_set_mode, + .get_mode = rt5120_buck_get_mode, + .get_error_flags = rt5120_regulator_get_error_flags, + .set_suspend_enable = rt5120_regulator_set_suspend_enable, + .set_suspend_disable = rt5120_regulator_set_suspend_disable, +}; + +static const struct regulator_ops rt5120_ldo_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, + .get_error_flags = rt5120_regulator_get_error_flags, + .set_suspend_enable = rt5120_regulator_set_suspend_enable, + .set_suspend_disable = rt5120_regulator_set_suspend_disable, +}; + +static const struct regulator_ops rt5120_exten_ops = { + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_suspend_enable = rt5120_regulator_set_suspend_enable, + .set_suspend_disable = rt5120_regulator_set_suspend_disable, +}; + +static unsigned int rt5120_buck_of_map_mode(unsigned int mode) +{ + switch (mode) { + case RT5120_AUTO_MODE: + return REGULATOR_MODE_NORMAL; + case RT5120_FPWM_MODE: + return REGULATOR_MODE_FAST; + default: + return REGULATOR_MODE_INVALID; + } +} + +static void rt5120_fillin_regulator_desc(struct regulator_desc *desc, int rid) +{ + static const char * const name[] = { + "buck1", "buck2", "buck3", "buck4", "ldo", "exten" }; + static const char * const sname[] = { + "vin1", "vin2", "vin3", "vin4", "vinldo", NULL }; + + /* Common regulator property */ + desc->name = name[rid]; + desc->supply_name = sname[rid]; + desc->owner = THIS_MODULE; + desc->type = REGULATOR_VOLTAGE; + desc->id = rid; + desc->enable_reg = RT5120_REG_ENABLE; + desc->enable_mask = RT5120_RIDEN_MASK(rid); + desc->active_discharge_reg = RT5120_REG_DISCHG; + desc->active_discharge_mask = RT5120_RADEN_MASK(rid); + desc->active_discharge_on = RT5120_RADEN_MASK(rid); + /* Config n_voltages to 1 for all*/ + desc->n_voltages = 1; + + /* Only buck support mode change */ + if (rid >= RT5120_REGULATOR_BUCK1 && rid <= RT5120_REGULATOR_BUCK4) + desc->of_map_mode = rt5120_buck_of_map_mode; + + /* RID specific property init */ + switch (rid) { + case RT5120_REGULATOR_BUCK1: + /* Only buck1 support voltage change by I2C */ + desc->n_voltages = RT5120_BUCK1_NUM_VOLT; + desc->min_uV = RT5120_BUCK1_MINUV; + desc->uV_step = RT5120_BUCK1_STEPUV; + desc->vsel_reg = RT5120_REG_CH1VID, + desc->vsel_mask = RT5120_CH1VID_MASK, + desc->ops = &rt5120_buck1_ops; + break; + case RT5120_REGULATOR_BUCK2 ... RT5120_REGULATOR_BUCK4: + desc->ops = &rt5120_buck234_ops; + break; + case RT5120_REGULATOR_LDO: + desc->ops = &rt5120_ldo_ops; + break; + default: + desc->ops = &rt5120_exten_ops; + } +} + +static int rt5120_of_parse_cb(struct rt5120_priv *priv, int rid, + struct of_regulator_match *match) +{ + struct regulator_desc *desc = priv->rdesc + rid; + struct regulator_init_data *init_data = match->init_data; + + if (!init_data || rid == RT5120_REGULATOR_BUCK1) + return 0; + + if (init_data->constraints.min_uV != init_data->constraints.max_uV) { + dev_err(priv->dev, "Variable voltage for fixed regulator\n"); + return -EINVAL; + } + + desc->fixed_uV = init_data->constraints.min_uV; + return 0; +} + +static struct of_regulator_match rt5120_regu_match[RT5120_MAX_REGULATOR] = { + [RT5120_REGULATOR_BUCK1] = { .name = "buck1", }, + [RT5120_REGULATOR_BUCK2] = { .name = "buck2", }, + [RT5120_REGULATOR_BUCK3] = { .name = "buck3", }, + [RT5120_REGULATOR_BUCK4] = { .name = "buck4", }, + [RT5120_REGULATOR_LDO] = { .name = "ldo", }, + [RT5120_REGULATOR_EXTEN] = { .name = "exten", } +}; + +static int rt5120_parse_regulator_dt_data(struct rt5120_priv *priv) +{ + struct device *dev = priv->dev->parent; + struct device_node *reg_node; + int i, ret; + + for (i = 0; i < RT5120_MAX_REGULATOR; i++) { + rt5120_fillin_regulator_desc(priv->rdesc + i, i); + + rt5120_regu_match[i].desc = priv->rdesc + i; + } + + reg_node = of_get_child_by_name(dev->of_node, "regulators"); + if (!reg_node) { + dev_err(priv->dev, "Couldn't find 'regulators' node\n"); + return -ENODEV; + } + + ret = of_regulator_match(priv->dev, reg_node, rt5120_regu_match, + ARRAY_SIZE(rt5120_regu_match)); + + of_node_put(reg_node); + + if (ret < 0) { + dev_err(priv->dev, + "Error parsing regulator init data (%d)\n", ret); + return ret; + } + + for (i = 0; i < RT5120_MAX_REGULATOR; i++) { + ret = rt5120_of_parse_cb(priv, i, rt5120_regu_match + i); + if (ret) { + dev_err(priv->dev, "Failed in [%d] of_passe_cb\n", i); + return ret; + } + } + + return 0; +} + +static int rt5120_device_property_init(struct rt5120_priv *priv) +{ + struct device *dev = priv->dev->parent; + struct device_node *np = dev->of_node; + bool prot_enable; + unsigned int prot_enable_val = 0; + + /* Assign UV/OV HW protection behavior */ + prot_enable = of_property_read_bool(np, + "richtek,enable-undervolt-hiccup"); + if (prot_enable) + prot_enable_val |= RT5120_UVHICCUP_MASK; + + prot_enable = of_property_read_bool(np, + "richtek,enable-overvolt-hiccup"); + if (prot_enable) + prot_enable_val |= RT5120_OVHICCUP_MASK; + + return regmap_update_bits(priv->regmap, RT5120_REG_UVOVPROT, + RT5120_UVHICCUP_MASK | RT5120_OVHICCUP_MASK, + prot_enable_val); +} + +static int rt5120_regulator_probe(struct platform_device *pdev) +{ + struct rt5120_priv *priv; + struct regulator_dev *rdev; + struct regulator_config config = {}; + int i, ret; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = &pdev->dev; + + priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!priv->regmap) { + dev_err(&pdev->dev, "Failed to init regmap\n"); + return -ENODEV; + } + + ret = rt5120_device_property_init(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to do property init\n"); + return ret; + } + + ret = rt5120_parse_regulator_dt_data(priv); + if (ret) { + dev_err(&pdev->dev, "Failed to parse dt data\n"); + return ret; + } + + config.dev = &pdev->dev; + config.regmap = priv->regmap; + + for (i = 0; i < RT5120_MAX_REGULATOR; i++) { + config.of_node = rt5120_regu_match[i].of_node; + config.init_data = rt5120_regu_match[i].init_data; + + rdev = devm_regulator_register(&pdev->dev, priv->rdesc + i, + &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, + "Failed to register regulator [%d]\n", i); + return PTR_ERR(rdev); + } + } + + return 0; +} + +static const struct platform_device_id rt5120_regulator_dev_table[] = { + { "rt5120-regulator", 0 }, + {} +}; +MODULE_DEVICE_TABLE(platform, rt5120_regulator_dev_table); + +static struct platform_driver rt5120_regulator_driver = { + .driver = { + .name = "rt5120-regulator", + }, + .id_table = rt5120_regulator_dev_table, + .probe = rt5120_regulator_probe, +}; +module_platform_driver(rt5120_regulator_driver); + +MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); +MODULE_DESCRIPTION("Richtek RT5120 regulator driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/regulator/rt5190a-regulator.c b/drivers/regulator/rt5190a-regulator.c index 155d4afd00b1..4a3397b32582 100644 --- a/drivers/regulator/rt5190a-regulator.c +++ b/drivers/regulator/rt5190a-regulator.c @@ -224,6 +224,9 @@ static int rt5190a_of_parse_cb(struct rt5190a_priv *priv, int rid, bool latchup_enable; unsigned int mask = RT5190A_RID_BITMASK(rid), val; + if (!init_data) + return 0; + switch (rid) { case RT5190A_IDX_BUCK1: case RT5190A_IDX_BUCK4: diff --git a/drivers/regulator/scmi-regulator.c b/drivers/regulator/scmi-regulator.c index 41ae7ac27ff6..b9918f4fd241 100644 --- a/drivers/regulator/scmi-regulator.c +++ b/drivers/regulator/scmi-regulator.c @@ -343,6 +343,7 @@ static int scmi_regulator_probe(struct scmi_device *sdev) * plausible SCMI Voltage Domain number, all belonging to this SCMI * platform instance node (handle->dev->of_node). */ + of_node_get(handle->dev->of_node); np = of_find_node_by_name(handle->dev->of_node, "regulators"); for_each_child_of_node(np, child) { ret = process_scmi_regulator_of_node(sdev, ph, child, rinfo); |