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regulator: rt5190a: Add support for Richtek RT5190A PMIC
Add support for Richtek RT5190A PMIC. Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/1646812903-32496-3-git-send-email-u0084500@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
ChiYuan Huang
Mark Brown
parent
b77e70f6b8
commit
760423dfad
@ -1047,6 +1047,16 @@ config REGULATOR_RT5033
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RT5033 PMIC. The device supports multiple regulators like
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current source, LDO and Buck.
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config REGULATOR_RT5190A
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tristate "Richtek RT5190A PMIC"
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depends on I2C
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select REGMAP_I2C
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help
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This adds support for voltage regulator in Richtek RT5190A PMIC.
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It integratas 1 channel buck controller, 3 channels high efficiency
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buck converters, 1 LDO, mute AC OFF depop function, with the general
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I2C control interface.
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config REGULATOR_RT6160
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tristate "Richtek RT6160 BuckBoost voltage regulator"
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depends on I2C
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@ -126,6 +126,7 @@ obj-$(CONFIG_REGULATOR_ROHM) += rohm-regulator.o
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obj-$(CONFIG_REGULATOR_RT4801) += rt4801-regulator.o
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obj-$(CONFIG_REGULATOR_RT4831) += rt4831-regulator.o
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obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o
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obj-$(CONFIG_REGULATOR_RT5190A) += rt5190a-regulator.o
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obj-$(CONFIG_REGULATOR_RT6160) += rt6160-regulator.o
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obj-$(CONFIG_REGULATOR_RT6245) += rt6245-regulator.o
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obj-$(CONFIG_REGULATOR_RTMV20) += rtmv20-regulator.o
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513
drivers/regulator/rt5190a-regulator.c
Normal file
513
drivers/regulator/rt5190a-regulator.c
Normal file
@ -0,0 +1,513 @@
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// SPDX-License-Identifier: GPL-2.0+
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#include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
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#include <linux/bits.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/property.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#define RT5190A_REG_MANUFACTURE 0x00
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#define RT5190A_REG_BUCK2VSEL 0x04
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#define RT5190A_REG_BUCK3VSEL 0x05
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#define RT5190A_REG_DCDCCNTL 0x06
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#define RT5190A_REG_ENABLE 0x07
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#define RT5190A_REG_DISCHARGE 0x09
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#define RT5190A_REG_PROTMODE 0x0A
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#define RT5190A_REG_MUTECNTL 0x0B
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#define RT5190A_REG_PGSTAT 0x0F
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#define RT5190A_REG_OVINT 0x10
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#define RT5190A_REG_HOTDIEMASK 0x17
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#define RT5190A_VSEL_MASK GENMASK(6, 0)
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#define RT5190A_RID_BITMASK(rid) BIT(rid + 1)
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#define RT5190A_BUCK1_DISCHG_MASK GENMASK(1, 0)
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#define RT5190A_BUCK1_DISCHG_ONVAL 0x01
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#define RT5190A_OVERVOLT_MASK GENMASK(7, 0)
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#define RT5190A_UNDERVOLT_MASK GENMASK(15, 8)
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#define RT5190A_CH234OT_MASK BIT(29)
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#define RT5190A_CHIPOT_MASK BIT(28)
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#define RT5190A_BUCK23_MINUV 600000
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#define RT5190A_BUCK23_MAXUV 1400000
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#define RT5190A_BUCK23_STEPUV 10000
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#define RT5190A_BUCK23_STEPNUM ((1400000 - 600000) / 10000 + 1)
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enum {
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RT5190A_IDX_BUCK1 = 0,
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RT5190A_IDX_BUCK2,
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RT5190A_IDX_BUCK3,
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RT5190A_IDX_BUCK4,
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RT5190A_IDX_LDO,
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RT5190A_MAX_IDX
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};
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struct rt5190a_priv {
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struct device *dev;
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struct regmap *regmap;
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struct regulator_desc rdesc[RT5190A_MAX_IDX];
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struct regulator_dev *rdev[RT5190A_MAX_IDX];
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};
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static int rt5190a_get_error_flags(struct regulator_dev *rdev,
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unsigned int *flags)
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{
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struct regmap *regmap = rdev_get_regmap(rdev);
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int rid = rdev_get_id(rdev);
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unsigned int pgood_stat;
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int ret;
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ret = regmap_read(regmap, RT5190A_REG_PGSTAT, &pgood_stat);
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if (ret)
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return ret;
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if (!(pgood_stat & RT5190A_RID_BITMASK(rid)))
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*flags = REGULATOR_ERROR_FAIL;
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else
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*flags = 0;
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return 0;
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}
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static int rt5190a_fixed_buck_set_mode(struct regulator_dev *rdev,
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unsigned int mode)
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{
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struct regmap *regmap = rdev_get_regmap(rdev);
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int rid = rdev_get_id(rdev);
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unsigned int mask = RT5190A_RID_BITMASK(rid), val;
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switch (mode) {
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case REGULATOR_MODE_FAST:
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val = mask;
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break;
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case REGULATOR_MODE_NORMAL:
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val = 0;
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break;
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default:
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return -EINVAL;
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}
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return regmap_update_bits(regmap, RT5190A_REG_DCDCCNTL, mask, val);
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}
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static unsigned int rt5190a_fixed_buck_get_mode(struct regulator_dev *rdev)
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{
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struct regmap *regmap = rdev_get_regmap(rdev);
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int rid = rdev_get_id(rdev);
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unsigned int val;
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int ret;
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ret = regmap_read(regmap, RT5190A_REG_DCDCCNTL, &val);
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if (ret) {
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dev_err(&rdev->dev, "Failed to get mode [%d]\n", ret);
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return ret;
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}
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if (val & RT5190A_RID_BITMASK(rid))
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return REGULATOR_MODE_FAST;
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return REGULATOR_MODE_NORMAL;
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}
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static const struct regulator_ops rt5190a_ranged_buck_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.list_voltage = regulator_list_voltage_linear,
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.set_active_discharge = regulator_set_active_discharge_regmap,
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.get_error_flags = rt5190a_get_error_flags,
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};
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static const struct regulator_ops rt5190a_fixed_buck_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_active_discharge = regulator_set_active_discharge_regmap,
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.set_mode = rt5190a_fixed_buck_set_mode,
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.get_mode = rt5190a_fixed_buck_get_mode,
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.get_error_flags = rt5190a_get_error_flags,
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};
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static const struct regulator_ops rt5190a_fixed_ldo_ops = {
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_active_discharge = regulator_set_active_discharge_regmap,
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.get_error_flags = rt5190a_get_error_flags,
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};
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static irqreturn_t rt5190a_irq_handler(int irq, void *data)
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{
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struct rt5190a_priv *priv = data;
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__le32 raws;
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unsigned int events, fields;
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static const struct {
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unsigned int bitmask;
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unsigned int report;
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} event_tbl[] = {
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{ RT5190A_OVERVOLT_MASK, REGULATOR_ERROR_REGULATION_OUT },
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{ RT5190A_UNDERVOLT_MASK, REGULATOR_ERROR_UNDER_VOLTAGE }
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};
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int i, j, ret;
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ret = regmap_raw_read(priv->regmap, RT5190A_REG_OVINT, &raws,
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sizeof(raws));
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if (ret) {
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dev_err(priv->dev, "Failed to read events\n");
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return IRQ_NONE;
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}
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events = le32_to_cpu(raws);
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ret = regmap_raw_write(priv->regmap, RT5190A_REG_OVINT, &raws,
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sizeof(raws));
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if (ret)
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dev_err(priv->dev, "Failed to write-clear events\n");
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/* Handle OV,UV events */
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for (i = 0; i < ARRAY_SIZE(event_tbl); i++) {
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fields = events & event_tbl[i].bitmask;
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fields >>= ffs(event_tbl[i].bitmask) - 1;
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for (j = 0; j < RT5190A_MAX_IDX; j++) {
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if (!(fields & RT5190A_RID_BITMASK(j)))
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continue;
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regulator_notifier_call_chain(priv->rdev[j],
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event_tbl[i].report,
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NULL);
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}
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}
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/* Handle CH234 OT event */
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if (events & RT5190A_CH234OT_MASK) {
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for (j = RT5190A_IDX_BUCK2; j < RT5190A_IDX_LDO; j++) {
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regulator_notifier_call_chain(priv->rdev[j],
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REGULATOR_ERROR_OVER_TEMP,
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NULL);
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}
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}
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/* Warning if CHIP OT occur */
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if (events & RT5190A_CHIPOT_MASK)
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dev_warn(priv->dev, "CHIP overheat\n");
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return IRQ_HANDLED;
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}
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static unsigned int rt5190a_of_map_mode(unsigned int mode)
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{
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switch (mode) {
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case RT5190A_OPMODE_AUTO:
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return REGULATOR_MODE_NORMAL;
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case RT5190A_OPMODE_FPWM:
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return REGULATOR_MODE_FAST;
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default:
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return REGULATOR_MODE_INVALID;
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}
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}
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static int rt5190a_of_parse_cb(struct rt5190a_priv *priv, int rid,
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struct of_regulator_match *match)
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{
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struct regulator_desc *desc = priv->rdesc + rid;
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struct regulator_init_data *init_data = match->init_data;
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struct device_node *np = match->of_node;
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bool latchup_enable;
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unsigned int mask = RT5190A_RID_BITMASK(rid), val;
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switch (rid) {
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case RT5190A_IDX_BUCK1:
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case RT5190A_IDX_BUCK4:
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case RT5190A_IDX_LDO:
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init_data->constraints.apply_uV = 0;
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if (init_data->constraints.min_uV ==
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init_data->constraints.max_uV)
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desc->fixed_uV = init_data->constraints.min_uV;
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else {
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dev_err(priv->dev,
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"Variable voltage for fixed regulator\n");
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return -EINVAL;
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}
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break;
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default:
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break;
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}
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latchup_enable = of_property_read_bool(np, "richtek,latchup-enable");
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/* latchup: 0, default hiccup: 1 */
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val = !latchup_enable ? mask : 0;
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return regmap_update_bits(priv->regmap, RT5190A_REG_PROTMODE, mask, val);
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}
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static void rt5190a_fillin_regulator_desc(struct regulator_desc *desc, int rid)
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{
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static const char * const regu_name[] = { "buck1", "buck2",
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"buck3", "buck4",
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"ldo" };
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static const char * const supply[] = { NULL, "vin2", "vin3", "vin4",
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"vinldo" };
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desc->name = regu_name[rid];
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desc->supply_name = supply[rid];
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desc->owner = THIS_MODULE;
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desc->type = REGULATOR_VOLTAGE;
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desc->id = rid;
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desc->enable_reg = RT5190A_REG_ENABLE;
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desc->enable_mask = RT5190A_RID_BITMASK(rid);
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desc->active_discharge_reg = RT5190A_REG_DISCHARGE;
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desc->active_discharge_mask = RT5190A_RID_BITMASK(rid);
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desc->active_discharge_on = RT5190A_RID_BITMASK(rid);
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switch (rid) {
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case RT5190A_IDX_BUCK1:
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desc->active_discharge_mask = RT5190A_BUCK1_DISCHG_MASK;
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desc->active_discharge_on = RT5190A_BUCK1_DISCHG_ONVAL;
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desc->n_voltages = 1;
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desc->ops = &rt5190a_fixed_buck_ops;
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desc->of_map_mode = rt5190a_of_map_mode;
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break;
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case RT5190A_IDX_BUCK2:
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desc->vsel_reg = RT5190A_REG_BUCK2VSEL;
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desc->vsel_mask = RT5190A_VSEL_MASK;
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desc->min_uV = RT5190A_BUCK23_MINUV;
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desc->uV_step = RT5190A_BUCK23_STEPUV;
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desc->n_voltages = RT5190A_BUCK23_STEPNUM;
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desc->ops = &rt5190a_ranged_buck_ops;
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break;
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case RT5190A_IDX_BUCK3:
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desc->vsel_reg = RT5190A_REG_BUCK3VSEL;
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desc->vsel_mask = RT5190A_VSEL_MASK;
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desc->min_uV = RT5190A_BUCK23_MINUV;
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desc->uV_step = RT5190A_BUCK23_STEPUV;
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desc->n_voltages = RT5190A_BUCK23_STEPNUM;
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desc->ops = &rt5190a_ranged_buck_ops;
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break;
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case RT5190A_IDX_BUCK4:
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desc->n_voltages = 1;
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desc->ops = &rt5190a_fixed_buck_ops;
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desc->of_map_mode = rt5190a_of_map_mode;
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break;
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case RT5190A_IDX_LDO:
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desc->n_voltages = 1;
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desc->ops = &rt5190a_fixed_ldo_ops;
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break;
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}
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}
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static struct of_regulator_match rt5190a_regulator_match[] = {
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{ .name = "buck1", },
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{ .name = "buck2", },
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{ .name = "buck3", },
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{ .name = "buck4", },
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{ .name = "ldo", }
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};
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static int rt5190a_parse_regulator_dt_data(struct rt5190a_priv *priv)
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{
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struct device_node *regulator_np;
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struct regulator_desc *reg_desc;
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struct of_regulator_match *match;
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int i, ret;
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for (i = 0; i < RT5190A_MAX_IDX; i++) {
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reg_desc = priv->rdesc + i;
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match = rt5190a_regulator_match + i;
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rt5190a_fillin_regulator_desc(reg_desc, i);
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match->desc = reg_desc;
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}
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regulator_np = of_get_child_by_name(priv->dev->of_node, "regulators");
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if (!regulator_np) {
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dev_err(priv->dev, "Could not find 'regulators' node\n");
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return -ENODEV;
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}
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ret = of_regulator_match(priv->dev, regulator_np,
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rt5190a_regulator_match,
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ARRAY_SIZE(rt5190a_regulator_match));
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of_node_put(regulator_np);
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if (ret < 0) {
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dev_err(priv->dev,
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"Error parsing regulator init data: %d\n", ret);
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return ret;
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}
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for (i = 0; i < RT5190A_MAX_IDX; i++) {
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match = rt5190a_regulator_match + i;
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ret = rt5190a_of_parse_cb(priv, i, match);
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if (ret) {
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dev_err(priv->dev, "Failed in [%d] of_parse_cb\n", i);
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return ret;
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}
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}
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return 0;
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}
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static const struct reg_sequence rt5190a_init_patch[] = {
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{ 0x09, 0x3d, },
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{ 0x0a, 0x3e, },
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{ 0x0b, 0x01, },
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{ 0x10, 0xff, },
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{ 0x11, 0xff, },
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{ 0x12, 0xff, },
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{ 0x13, 0xff, },
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{ 0x14, 0, },
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{ 0x15, 0, },
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{ 0x16, 0x3e, },
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{ 0x17, 0, }
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};
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static int rt5190a_device_initialize(struct rt5190a_priv *priv)
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{
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bool mute_enable;
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int ret;
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ret = regmap_register_patch(priv->regmap, rt5190a_init_patch,
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ARRAY_SIZE(rt5190a_init_patch));
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if (ret) {
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dev_err(priv->dev, "Failed to do register patch\n");
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return ret;
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}
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mute_enable = device_property_read_bool(priv->dev,
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"richtek,mute-enable");
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if (mute_enable) {
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ret = regmap_write(priv->regmap, RT5190A_REG_MUTECNTL, 0x00);
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if (ret) {
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dev_err(priv->dev, "Failed to enable mute function\n");
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return ret;
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}
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}
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||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rt5190a_device_check(struct rt5190a_priv *priv)
|
||||
{
|
||||
u16 devid;
|
||||
int ret;
|
||||
|
||||
ret = regmap_raw_read(priv->regmap, RT5190A_REG_MANUFACTURE, &devid,
|
||||
sizeof(devid));
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (devid) {
|
||||
dev_err(priv->dev, "Incorrect device id 0x%04x\n", devid);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct regmap_config rt5190a_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = RT5190A_REG_HOTDIEMASK,
|
||||
};
|
||||
|
||||
static int rt5190a_probe(struct i2c_client *i2c)
|
||||
{
|
||||
struct rt5190a_priv *priv;
|
||||
struct regulator_config cfg = {};
|
||||
int i, ret;
|
||||
|
||||
priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
|
||||
if (!priv)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->dev = &i2c->dev;
|
||||
|
||||
priv->regmap = devm_regmap_init_i2c(i2c, &rt5190a_regmap_config);
|
||||
if (IS_ERR(priv->regmap)) {
|
||||
dev_err(&i2c->dev, "Failed to allocate regmap\n");
|
||||
return PTR_ERR(priv->regmap);
|
||||
}
|
||||
|
||||
ret = rt5190a_device_check(priv);
|
||||
if (ret) {
|
||||
dev_err(&i2c->dev, "Failed to check device %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = rt5190a_device_initialize(priv);
|
||||
if (ret) {
|
||||
dev_err(&i2c->dev, "Failed to initialize the device\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = rt5190a_parse_regulator_dt_data(priv);
|
||||
if (ret) {
|
||||
dev_err(&i2c->dev, "Failed to parse regulator dt\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
cfg.dev = &i2c->dev;
|
||||
cfg.regmap = priv->regmap;
|
||||
|
||||
for (i = 0; i < RT5190A_MAX_IDX; i++) {
|
||||
struct regulator_desc *desc = priv->rdesc + i;
|
||||
struct of_regulator_match *match = rt5190a_regulator_match + i;
|
||||
|
||||
cfg.init_data = match->init_data;
|
||||
cfg.of_node = match->of_node;
|
||||
|
||||
priv->rdev[i] = devm_regulator_register(&i2c->dev, desc, &cfg);
|
||||
if (IS_ERR(priv->rdev[i])) {
|
||||
dev_err(&i2c->dev, "Failed to register regulator %s\n",
|
||||
desc->name);
|
||||
return PTR_ERR(priv->rdev[i]);
|
||||
}
|
||||
}
|
||||
|
||||
if (i2c->irq) {
|
||||
ret = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
|
||||
rt5190a_irq_handler,
|
||||
IRQF_ONESHOT,
|
||||
dev_name(&i2c->dev), priv);
|
||||
if (ret) {
|
||||
dev_err(&i2c->dev, "Failed to register interrupt\n");
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct of_device_id __maybe_unused rt5190a_device_table[] = {
|
||||
{ .compatible = "richtek,rt5190a", },
|
||||
{}
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, rt5190a_device_table);
|
||||
|
||||
static struct i2c_driver rt5190a_driver = {
|
||||
.driver = {
|
||||
.name = "rt5190a",
|
||||
.of_match_table = rt5190a_device_table,
|
||||
},
|
||||
.probe_new = rt5190a_probe,
|
||||
};
|
||||
module_i2c_driver(rt5190a_driver);
|
||||
|
||||
MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
|
||||
MODULE_DESCRIPTION("Richtek RT5190A Regulator Driver");
|
||||
MODULE_LICENSE("GPL v2");
|
||||
Loading…
Reference in New Issue
Block a user