Unverified Commit 0555d414 authored by ChiYuan Huang's avatar ChiYuan Huang Committed by Mark Brown
Browse files

regulator: rtq2134: Add support for Richtek RTQ2134 SubPMIC 



This adds support for Richtek RTQ2134 SubPMIC.

Signed-off-by: default avatarChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1626422636-29458-2-git-send-email-u0084500@gmail.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4c922fd3

drivers/regulator/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -1057,6 +1057,17 @@ config REGULATOR_RT6245 
	  It can support up to 14A output current and adjustable output voltage

	  from 0.4375V to 1.3875V, per step 12.5mV.



config REGULATOR_RTQ2134

	tristate "Richtek RTQ2134 SubPMIC Regulator"

	depends on I2C

	select REGMAP_I2C

	help

	  This driver adds support for RTQ2134 SubPMIC regulators.

	  The RTQ2134 is a multi-phase, programmable power management IC that

	  integrate with four high efficient, synchronous step-down converter

	  cores. It features wide output voltage range and the capability to

	  configure the corresponding power stages.



config REGULATOR_RTMV20

	tristate "Richtek RTMV20 Laser Diode Regulator"

	depends on I2C

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -128,6 +128,7 @@ obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o 
obj-$(CONFIG_REGULATOR_RT6160)	+= rt6160-regulator.o

obj-$(CONFIG_REGULATOR_RT6245)	+= rt6245-regulator.o

obj-$(CONFIG_REGULATOR_RTMV20)	+= rtmv20-regulator.o

obj-$(CONFIG_REGULATOR_RTQ2134) += rtq2134-regulator.o

obj-$(CONFIG_REGULATOR_RTQ6752)	+= rtq6752-regulator.o

obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o

obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o

drivers/regulator/rtq2134-regulator.c

0 → 100644
+373 −0
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// SPDX-License-Identifier: GPL-2.0+



#include <linux/bitops.h>

#include <linux/i2c.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/regmap.h>

#include <linux/regulator/driver.h>



enum {

	RTQ2134_IDX_BUCK1 = 0,

	RTQ2134_IDX_BUCK2,

	RTQ2134_IDX_BUCK3,

	RTQ2134_IDX_MAX

};



#define RTQ2134_AUTO_MODE		0

#define RTQ2134_FCCM_MODE		1



#define RTQ2134_BUCK_DVS0_CTRL		0

#define RTQ2134_BUCK_VSEL_CTRL		2



#define RTQ2134_REG_IO_CHIPNAME		0x01

#define RTQ2134_REG_FLT_RECORDTEMP	0x13

#define RTQ2134_REG_FLT_RECORDBUCK(_id)	(0x14 + (_id))

#define RTQ2134_REG_FLT_BUCKCTRL(_id)	(0x37 + (_id))

#define RTQ2134_REG_BUCK1_CFG0		0x42

#define RTQ2134_REG_BUCK1_DVS0CFG1	0x48

#define RTQ2134_REG_BUCK1_DVS0CFG0	0x49

#define RTQ2134_REG_BUCK1_DVS1CFG1	0x4A

#define RTQ2134_REG_BUCK1_DVS1CFG0	0x4B

#define RTQ2134_REG_BUCK1_DVSCFG	0x52

#define RTQ2134_REG_BUCK1_RSPCFG	0x54

#define RTQ2134_REG_BUCK2_CFG0		0x5F

#define RTQ2134_REG_BUCK2_DVS0CFG1	0x62

#define RTQ2134_REG_BUCK2_DVS0CFG0	0x63

#define RTQ2134_REG_BUCK2_DVS1CFG1	0x64

#define RTQ2134_REG_BUCK2_DVS1CFG0	0x65

#define RTQ2134_REG_BUCK2_DVSCFG	0x6C

#define RTQ2134_REG_BUCK2_RSPCFG	0x6E

#define RTQ2134_REG_BUCK3_CFG0		0x79

#define RTQ2134_REG_BUCK3_DVS0CFG1	0x7C

#define RTQ2134_REG_BUCK3_DVS0CFG0	0x7D

#define RTQ2134_REG_BUCK3_DVS1CFG1	0x7E

#define RTQ2134_REG_BUCK3_DVS1CFG0	0x7F

#define RTQ2134_REG_BUCK3_DVSCFG	0x86

#define RTQ2134_REG_BUCK3_RSPCFG	0x88

#define RTQ2134_REG_BUCK3_SLEWCTRL	0x89



#define RTQ2134_VOUT_MAXNUM		256

#define RTQ2134_VOUT_MASK		0xFF

#define RTQ2134_VOUTEN_MASK		BIT(0)

#define RTQ2134_ACTDISCHG_MASK		BIT(0)

#define RTQ2134_RSPUP_MASK		GENMASK(6, 4)

#define RTQ2134_FCCM_MASK		BIT(5)

#define RTQ2134_UVHICCUP_MASK		BIT(3)

#define RTQ2134_BUCKDVS_CTRL_MASK	GENMASK(1, 0)

#define RTQ2134_CHIPOT_MASK		BIT(2)

#define RTQ2134_BUCKOV_MASK		BIT(5)

#define RTQ2134_BUCKUV_MASK		BIT(4)



struct rtq2134_regulator_desc {

	struct regulator_desc desc;

	/* Extension for proprietary register and mask */

	unsigned int mode_reg;

	unsigned int mode_mask;

	unsigned int suspend_enable_reg;

	unsigned int suspend_enable_mask;

	unsigned int suspend_vsel_reg;

	unsigned int suspend_vsel_mask;

	unsigned int suspend_mode_reg;

	unsigned int suspend_mode_mask;

	unsigned int dvs_ctrl_reg;

};



static int rtq2134_buck_set_mode(struct regulator_dev *rdev, unsigned int mode)

{

	struct rtq2134_regulator_desc *desc =

		(struct rtq2134_regulator_desc *)rdev->desc;

	unsigned int val;



	if (mode == REGULATOR_MODE_NORMAL)

		val = RTQ2134_AUTO_MODE;

	else if (mode == REGULATOR_MODE_FAST)

		val = RTQ2134_FCCM_MODE;

	else

		return -EINVAL;



	val <<= ffs(desc->mode_mask) - 1;

	return regmap_update_bits(rdev->regmap, desc->mode_reg, desc->mode_mask,

				  val);

}



static unsigned int rtq2134_buck_get_mode(struct regulator_dev *rdev)

{

	struct rtq2134_regulator_desc *desc =

		(struct rtq2134_regulator_desc *)rdev->desc;

	unsigned int mode;

	int ret;



	ret = regmap_read(rdev->regmap, desc->mode_reg, &mode);

	if (ret)

		return ret;



	if (mode & desc->mode_mask)

		return REGULATOR_MODE_FAST;

	return REGULATOR_MODE_NORMAL;

}



static int rtq2134_buck_set_suspend_voltage(struct regulator_dev *rdev, int uV)

{

	struct rtq2134_regulator_desc *desc =

		(struct rtq2134_regulator_desc *)rdev->desc;

	int sel;



	sel = regulator_map_voltage_linear_range(rdev, uV, uV);

	if (sel < 0)

		return sel;



	sel <<= ffs(desc->suspend_vsel_mask) - 1;



	return regmap_update_bits(rdev->regmap, desc->suspend_vsel_reg,

				  desc->suspend_vsel_mask, sel);

}



static int rtq2134_buck_set_suspend_enable(struct regulator_dev *rdev)

{

	struct rtq2134_regulator_desc *desc =

		(struct rtq2134_regulator_desc *)rdev->desc;

	unsigned int val = desc->suspend_enable_mask;



	return regmap_update_bits(rdev->regmap, desc->suspend_enable_reg,

				  desc->suspend_enable_mask, val);

}



static int rtq2134_buck_set_suspend_disable(struct regulator_dev *rdev)

{

	struct rtq2134_regulator_desc *desc =

		(struct rtq2134_regulator_desc *)rdev->desc;



	return regmap_update_bits(rdev->regmap, desc->suspend_enable_reg,

				  desc->suspend_enable_mask, 0);

}



static int rtq2134_buck_set_suspend_mode(struct regulator_dev *rdev,

					 unsigned int mode)

{

	struct rtq2134_regulator_desc *desc =

		(struct rtq2134_regulator_desc *)rdev->desc;

	unsigned int val;



	if (mode == REGULATOR_MODE_NORMAL)

		val = RTQ2134_AUTO_MODE;

	else if (mode == REGULATOR_MODE_FAST)

		val = RTQ2134_FCCM_MODE;

	else

		return -EINVAL;



	val <<= ffs(desc->suspend_mode_mask) - 1;

	return regmap_update_bits(rdev->regmap, desc->suspend_mode_reg,

				  desc->suspend_mode_mask, val);

}



static int rtq2134_buck_get_error_flags(struct regulator_dev *rdev,

					unsigned int *flags)

{

	int rid = rdev_get_id(rdev);

	unsigned int chip_error, buck_error, events = 0;

	int ret;



	ret = regmap_read(rdev->regmap, RTQ2134_REG_FLT_RECORDTEMP,

			  &chip_error);

	if (ret) {

		dev_err(&rdev->dev, "Failed to get chip error flag\n");

		return ret;

	}



	ret = regmap_read(rdev->regmap, RTQ2134_REG_FLT_RECORDBUCK(rid),

			  &buck_error);

	if (ret) {

		dev_err(&rdev->dev, "Failed to get buck error flag\n");

		return ret;

	}



	if (chip_error & RTQ2134_CHIPOT_MASK)

		events |= REGULATOR_ERROR_OVER_TEMP;



	if (buck_error & RTQ2134_BUCKUV_MASK)

		events |= REGULATOR_ERROR_UNDER_VOLTAGE;



	if (buck_error & RTQ2134_BUCKOV_MASK)

		events |= REGULATOR_ERROR_REGULATION_OUT;



	*flags = events;

	return 0;

}



static const struct regulator_ops rtq2134_buck_ops = {

	.list_voltage = regulator_list_voltage_linear_range,

	.set_voltage_sel = regulator_set_voltage_sel_regmap,

	.get_voltage_sel = regulator_get_voltage_sel_regmap,

	.enable = regulator_enable_regmap,

	.disable = regulator_disable_regmap,

	.is_enabled = regulator_is_enabled_regmap,

	.set_active_discharge = regulator_set_active_discharge_regmap,

	.set_ramp_delay = regulator_set_ramp_delay_regmap,

	.set_mode = rtq2134_buck_set_mode,

	.get_mode = rtq2134_buck_get_mode,

	.set_suspend_voltage = rtq2134_buck_set_suspend_voltage,

	.set_suspend_enable = rtq2134_buck_set_suspend_enable,

	.set_suspend_disable = rtq2134_buck_set_suspend_disable,

	.set_suspend_mode = rtq2134_buck_set_suspend_mode,

	.get_error_flags = rtq2134_buck_get_error_flags,

};



static const struct linear_range rtq2134_buck_vout_ranges[] = {

	REGULATOR_LINEAR_RANGE(300000, 0, 200, 5000),

	REGULATOR_LINEAR_RANGE(1310000, 201, 255, 10000)

};



static unsigned int rtq2134_buck_of_map_mode(unsigned int mode)

{

	switch (mode) {

	case RTQ2134_AUTO_MODE:

		return REGULATOR_MODE_NORMAL;

	case RTQ2134_FCCM_MODE:

		return REGULATOR_MODE_FAST;

	}



	return REGULATOR_MODE_INVALID;

}



static int rtq2134_buck_of_parse_cb(struct device_node *np,

				    const struct regulator_desc *desc,

				    struct regulator_config *cfg)

{

	struct rtq2134_regulator_desc *rdesc =

		(struct rtq2134_regulator_desc *)desc;

	int rid = desc->id;

	bool uv_shutdown, vsel_dvs;

	unsigned int val;

	int ret;



	vsel_dvs = of_property_read_bool(np, "richtek,use-vsel-dvs");

	if (vsel_dvs)

		val = RTQ2134_BUCK_VSEL_CTRL;

	else

		val = RTQ2134_BUCK_DVS0_CTRL;



	ret = regmap_update_bits(cfg->regmap, rdesc->dvs_ctrl_reg,

				 RTQ2134_BUCKDVS_CTRL_MASK, val);

	if (ret)

		return ret;



	uv_shutdown = of_property_read_bool(np, "richtek,uv-shutdown");

	if (uv_shutdown)

		val = 0;

	else

		val = RTQ2134_UVHICCUP_MASK;



	return regmap_update_bits(cfg->regmap, RTQ2134_REG_FLT_BUCKCTRL(rid),

				  RTQ2134_UVHICCUP_MASK, val);

}



static const unsigned int rtq2134_buck_ramp_delay_table[] = {

	0, 16000, 0, 8000, 4000, 2000, 1000, 500

};



#define RTQ2134_BUCK_DESC(_id) { \

	.desc = { \

		.name = "rtq2134_buck" #_id, \

		.of_match = of_match_ptr("buck" #_id), \

		.regulators_node = of_match_ptr("regulators"), \

		.id = RTQ2134_IDX_BUCK##_id, \

		.type = REGULATOR_VOLTAGE, \

		.owner = THIS_MODULE, \

		.ops = &rtq2134_buck_ops, \

		.n_voltages = RTQ2134_VOUT_MAXNUM, \

		.linear_ranges = rtq2134_buck_vout_ranges, \

		.n_linear_ranges = ARRAY_SIZE(rtq2134_buck_vout_ranges), \

		.vsel_reg = RTQ2134_REG_BUCK##_id##_DVS0CFG1, \

		.vsel_mask = RTQ2134_VOUT_MASK, \

		.enable_reg = RTQ2134_REG_BUCK##_id##_DVS0CFG0, \

		.enable_mask = RTQ2134_VOUTEN_MASK, \

		.active_discharge_reg = RTQ2134_REG_BUCK##_id##_CFG0, \

		.active_discharge_mask = RTQ2134_ACTDISCHG_MASK, \

		.ramp_reg = RTQ2134_REG_BUCK##_id##_RSPCFG, \

		.ramp_mask = RTQ2134_RSPUP_MASK, \

		.ramp_delay_table = rtq2134_buck_ramp_delay_table, \

		.n_ramp_values = ARRAY_SIZE(rtq2134_buck_ramp_delay_table), \

		.of_map_mode = rtq2134_buck_of_map_mode, \

		.of_parse_cb = rtq2134_buck_of_parse_cb, \

	}, \

	.mode_reg = RTQ2134_REG_BUCK##_id##_DVS0CFG0, \

	.mode_mask = RTQ2134_FCCM_MASK, \

	.suspend_mode_reg = RTQ2134_REG_BUCK##_id##_DVS1CFG0, \

	.suspend_mode_mask = RTQ2134_FCCM_MASK, \

	.suspend_enable_reg = RTQ2134_REG_BUCK##_id##_DVS1CFG0, \

	.suspend_enable_mask = RTQ2134_VOUTEN_MASK, \

	.suspend_vsel_reg = RTQ2134_REG_BUCK##_id##_DVS1CFG1, \

	.suspend_vsel_mask = RTQ2134_VOUT_MASK, \

	.dvs_ctrl_reg = RTQ2134_REG_BUCK##_id##_DVSCFG, \

}



static const struct rtq2134_regulator_desc rtq2134_regulator_descs[] = {

	RTQ2134_BUCK_DESC(1),

	RTQ2134_BUCK_DESC(2),

	RTQ2134_BUCK_DESC(3)

};



static bool rtq2134_is_accissible_reg(struct device *dev, unsigned int reg)

{

	if (RTQ2134_REG_IO_CHIPNAME <= reg && reg <= RTQ2134_REG_BUCK3_SLEWCTRL)

		return true;

	return false;

}



static const struct regmap_config rtq2134_regmap_config = {

	.reg_bits = 8,

	.val_bits = 8,

	.max_register = RTQ2134_REG_BUCK3_SLEWCTRL,



	.readable_reg = rtq2134_is_accissible_reg,

	.writeable_reg = rtq2134_is_accissible_reg,

};



static int rtq2134_probe(struct i2c_client *i2c)

{

	struct regmap *regmap;

	struct regulator_dev *rdev;

	struct regulator_config regulator_cfg= {};

	int i;



	regmap = devm_regmap_init_i2c(i2c, &rtq2134_regmap_config);

	if (IS_ERR(regmap)) {

		dev_err(&i2c->dev, "Failed to allocate regmap\n");

		return PTR_ERR(regmap);

	}



	regulator_cfg.dev = &i2c->dev;

	regulator_cfg.regmap = regmap;

	for (i = 0; i < ARRAY_SIZE(rtq2134_regulator_descs); i++) {

		rdev = devm_regulator_register(&i2c->dev,

					       &rtq2134_regulator_descs[i].desc,

					       &regulator_cfg);

		if (IS_ERR(rdev)) {

			dev_err(&i2c->dev, "Failed to init %d regulator\n", i);

			return PTR_ERR(rdev);

		}

	}



	return 0;

}



static const struct of_device_id __maybe_unused rtq2134_device_tables[] = {

	{ .compatible = "richtek,rtq2134", },

	{}

};

MODULE_DEVICE_TABLE(of, rtq2134_device_tables);



static struct i2c_driver rtq2134_driver = {

	.driver = {

		.name = "rtq2134",

		.of_match_table = rtq2134_device_tables,

	},

	.probe_new = rtq2134_probe,

};

module_i2c_driver(rtq2134_driver);



MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");

MODULE_DESCRIPTION("Richtek RTQ2134 Regulator Driver");

MODULE_LICENSE("GPL v2");