--- /dev/null
+From b77e70f6b8f2cc62fba847f3008a430a09ef275d Mon Sep 17 00:00:00 2001
+From: ChiYuan Huang <cy_huang@richtek.com>
+Date: Wed, 9 Mar 2022 16:01:42 +0800
+Subject: [PATCH 1/2] regulator: Add bindings for Richtek RT5190A PMIC
+
+Add bindings for Richtek RT5190A PMIC.
+
+Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
+Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
+Link: https://lore.kernel.org/r/1646812903-32496-2-git-send-email-u0084500@gmail.com
+Signed-off-by: Mark Brown <broonie@kernel.org>
+---
+ .../regulator/richtek,rt5190a-regulator.yaml | 141 ++++++++++++++++++
+ .../regulator/richtek,rt5190a-regulator.h | 15 ++
+ 2 files changed, 156 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
+ create mode 100644 include/dt-bindings/regulator/richtek,rt5190a-regulator.h
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/regulator/richtek,rt5190a-regulator.yaml
+@@ -0,0 +1,141 @@
++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
++%YAML 1.2
++---
++$id: http://devicetree.org/schemas/regulator/richtek,rt5190a-regulator.yaml#
++$schema: http://devicetree.org/meta-schemas/core.yaml#
++
++title: Richtek RT5190A PMIC Regulator
++
++maintainers:
++ - ChiYuan Huang <cy_huang@richtek.com>
++
++description: |
++ The RT5190A integrates 1 channel buck controller, 3 channels high efficiency
++ synchronous buck converters, 1 LDO, I2C control interface and peripherial
++ logical control.
++
++ It also supports mute AC OFF depop sound and quick setting storage while
++ input power is removed.
++
++properties:
++ compatible:
++ enum:
++ - richtek,rt5190a
++
++ reg:
++ maxItems: 1
++
++ interrupts:
++ maxItems: 1
++
++ vin2-supply:
++ description: phandle to buck2 input voltage.
++
++ vin3-supply:
++ description: phandle to buck3 input voltage.
++
++ vin4-supply:
++ description: phandle to buck4 input voltage.
++
++ vinldo-supply:
++ description: phandle to ldo input voltage
++
++ richtek,mute-enable:
++ description: |
++ The mute function uses 'mutein', 'muteout', and 'vdet' pins as the control
++ signal. When enabled, The normal behavior is to bypass the 'mutein' signal
++ 'muteout'. But if the power source removal is detected from 'vdet',
++ whatever the 'mutein' signal is, it will pull down the 'muteout' to force
++ speakers mute. this function is commonly used to prevent the speaker pop
++ noise during AC power turned off in the modern TV system design.
++ type: boolean
++
++ regulators:
++ type: object
++
++ patternProperties:
++ "^buck[1-4]$|^ldo$":
++ type: object
++ $ref: regulator.yaml#
++ description: |
++ regulator description for buck1 and buck4.
++
++ properties:
++ regulator-allowed-modes:
++ description: |
++ buck operating mode, only buck1/4 support mode operating.
++ 0: auto mode
++ 1: force pwm mode
++ items:
++ enum: [0, 1]
++
++ richtek,latchup-enable:
++ type: boolean
++ description: |
++ If specified, undervolt protection mode changes from the default
++ hiccup to latchup.
++
++ unevaluatedProperties: false
++
++ additionalProperties: false
++
++required:
++ - compatible
++ - reg
++ - regulators
++
++additionalProperties: false
++
++examples:
++ - |
++ #include <dt-bindings/interrupt-controller/irq.h>
++ #include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
++
++ i2c {
++ #address-cells = <1>;
++ #size-cells = <0>;
++
++ pmic@64 {
++ compatible = "richtek,rt5190a";
++ reg = <0x64>;
++ interrupts-extended = <&gpio26 0 IRQ_TYPE_LEVEL_LOW>;
++ vin2-supply = <&rt5190_buck1>;
++ vin3-supply = <&rt5190_buck1>;
++ vin4-supply = <&rt5190_buck1>;
++
++ regulators {
++ rt5190_buck1: buck1 {
++ regulator-name = "rt5190a-buck1";
++ regulator-min-microvolt = <5090000>;
++ regulator-max-microvolt = <5090000>;
++ regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
++ regulator-boot-on;
++ };
++ buck2 {
++ regulator-name = "rt5190a-buck2";
++ regulator-min-microvolt = <600000>;
++ regulator-max-microvolt = <1400000>;
++ regulator-boot-on;
++ };
++ buck3 {
++ regulator-name = "rt5190a-buck3";
++ regulator-min-microvolt = <600000>;
++ regulator-max-microvolt = <1400000>;
++ regulator-boot-on;
++ };
++ buck4 {
++ regulator-name = "rt5190a-buck4";
++ regulator-min-microvolt = <850000>;
++ regulator-max-microvolt = <850000>;
++ regulator-allowed-modes = <RT5190A_OPMODE_AUTO RT5190A_OPMODE_FPWM>;
++ regulator-boot-on;
++ };
++ ldo {
++ regulator-name = "rt5190a-ldo";
++ regulator-min-microvolt = <1200000>;
++ regulator-max-microvolt = <1200000>;
++ regulator-boot-on;
++ };
++ };
++ };
++ };
+--- /dev/null
++++ b/include/dt-bindings/regulator/richtek,rt5190a-regulator.h
+@@ -0,0 +1,15 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++
++#ifndef __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
++#define __DT_BINDINGS_RICHTEK_RT5190A_REGULATOR_H__
++
++/*
++ * BUCK/LDO mode constants which may be used in devicetree properties
++ * (eg. regulator-allowed-modes).
++ * See the manufacturer's datasheet for more information on these modes.
++ */
++
++#define RT5190A_OPMODE_AUTO 0
++#define RT5190A_OPMODE_FPWM 1
++
++#endif
--- /dev/null
+From 760423dfad53877b468490758fe7ea968ded9402 Mon Sep 17 00:00:00 2001
+From: ChiYuan Huang <cy_huang@richtek.com>
+Date: Wed, 9 Mar 2022 16:01:43 +0800
+Subject: [PATCH 2/2] 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>
+---
+ drivers/regulator/Kconfig | 10 +
+ drivers/regulator/Makefile | 1 +
+ drivers/regulator/rt5190a-regulator.c | 513 ++++++++++++++++++++++++++
+ 3 files changed, 524 insertions(+)
+ create mode 100644 drivers/regulator/rt5190a-regulator.c
+
+--- a/drivers/regulator/Kconfig
++++ b/drivers/regulator/Kconfig
+@@ -1037,6 +1037,16 @@ config REGULATOR_RT5033
+ RT5033 PMIC. The device supports multiple regulators like
+ current source, LDO and Buck.
+
++config REGULATOR_RT5190A
++ tristate "Richtek RT5190A PMIC"
++ depends on I2C
++ select REGMAP_I2C
++ help
++ This adds support for voltage regulator in Richtek RT5190A PMIC.
++ It integratas 1 channel buck controller, 3 channels high efficiency
++ buck converters, 1 LDO, mute AC OFF depop function, with the general
++ I2C control interface.
++
+ config REGULATOR_RT6160
+ tristate "Richtek RT6160 BuckBoost voltage regulator"
+ depends on I2C
+--- a/drivers/regulator/Makefile
++++ b/drivers/regulator/Makefile
+@@ -125,6 +125,7 @@ obj-$(CONFIG_REGULATOR_ROHM) += rohm-reg
+ obj-$(CONFIG_REGULATOR_RT4801) += rt4801-regulator.o
+ obj-$(CONFIG_REGULATOR_RT4831) += rt4831-regulator.o
+ obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o
++obj-$(CONFIG_REGULATOR_RT5190A) += rt5190a-regulator.o
+ obj-$(CONFIG_REGULATOR_RT6160) += rt6160-regulator.o
+ obj-$(CONFIG_REGULATOR_RT6245) += rt6245-regulator.o
+ obj-$(CONFIG_REGULATOR_RTMV20) += rtmv20-regulator.o
+--- /dev/null
++++ b/drivers/regulator/rt5190a-regulator.c
+@@ -0,0 +1,513 @@
++// SPDX-License-Identifier: GPL-2.0+
++
++#include <dt-bindings/regulator/richtek,rt5190a-regulator.h>
++#include <linux/bits.h>
++#include <linux/i2c.h>
++#include <linux/interrupt.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/property.h>
++#include <linux/regmap.h>
++#include <linux/regulator/driver.h>
++#include <linux/regulator/machine.h>
++#include <linux/regulator/of_regulator.h>
++
++#define RT5190A_REG_MANUFACTURE 0x00
++#define RT5190A_REG_BUCK2VSEL 0x04
++#define RT5190A_REG_BUCK3VSEL 0x05
++#define RT5190A_REG_DCDCCNTL 0x06
++#define RT5190A_REG_ENABLE 0x07
++#define RT5190A_REG_DISCHARGE 0x09
++#define RT5190A_REG_PROTMODE 0x0A
++#define RT5190A_REG_MUTECNTL 0x0B
++#define RT5190A_REG_PGSTAT 0x0F
++#define RT5190A_REG_OVINT 0x10
++#define RT5190A_REG_HOTDIEMASK 0x17
++
++#define RT5190A_VSEL_MASK GENMASK(6, 0)
++#define RT5190A_RID_BITMASK(rid) BIT(rid + 1)
++#define RT5190A_BUCK1_DISCHG_MASK GENMASK(1, 0)
++#define RT5190A_BUCK1_DISCHG_ONVAL 0x01
++#define RT5190A_OVERVOLT_MASK GENMASK(7, 0)
++#define RT5190A_UNDERVOLT_MASK GENMASK(15, 8)
++#define RT5190A_CH234OT_MASK BIT(29)
++#define RT5190A_CHIPOT_MASK BIT(28)
++
++#define RT5190A_BUCK23_MINUV 600000
++#define RT5190A_BUCK23_MAXUV 1400000
++#define RT5190A_BUCK23_STEPUV 10000
++#define RT5190A_BUCK23_STEPNUM ((1400000 - 600000) / 10000 + 1)
++
++enum {
++ RT5190A_IDX_BUCK1 = 0,
++ RT5190A_IDX_BUCK2,
++ RT5190A_IDX_BUCK3,
++ RT5190A_IDX_BUCK4,
++ RT5190A_IDX_LDO,
++ RT5190A_MAX_IDX
++};
++
++struct rt5190a_priv {
++ struct device *dev;
++ struct regmap *regmap;
++ struct regulator_desc rdesc[RT5190A_MAX_IDX];
++ struct regulator_dev *rdev[RT5190A_MAX_IDX];
++};
++
++static int rt5190a_get_error_flags(struct regulator_dev *rdev,
++ unsigned int *flags)
++{
++ struct regmap *regmap = rdev_get_regmap(rdev);
++ int rid = rdev_get_id(rdev);
++ unsigned int pgood_stat;
++ int ret;
++
++ ret = regmap_read(regmap, RT5190A_REG_PGSTAT, &pgood_stat);
++ if (ret)
++ return ret;
++
++ if (!(pgood_stat & RT5190A_RID_BITMASK(rid)))
++ *flags = REGULATOR_ERROR_FAIL;
++ else
++ *flags = 0;
++
++ return 0;
++}
++
++static int rt5190a_fixed_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 = RT5190A_RID_BITMASK(rid), val;
++
++ switch (mode) {
++ case REGULATOR_MODE_FAST:
++ val = mask;
++ break;
++ case REGULATOR_MODE_NORMAL:
++ val = 0;
++ break;
++ default:
++ return -EINVAL;
++ }
++
++ return regmap_update_bits(regmap, RT5190A_REG_DCDCCNTL, mask, val);
++}
++
++static unsigned int rt5190a_fixed_buck_get_mode(struct regulator_dev *rdev)
++{
++ struct regmap *regmap = rdev_get_regmap(rdev);
++ int rid = rdev_get_id(rdev);
++ unsigned int val;
++ int ret;
++
++ ret = regmap_read(regmap, RT5190A_REG_DCDCCNTL, &val);
++ if (ret) {
++ dev_err(&rdev->dev, "Failed to get mode [%d]\n", ret);
++ return ret;
++ }
++
++ if (val & RT5190A_RID_BITMASK(rid))
++ return REGULATOR_MODE_FAST;
++
++ return REGULATOR_MODE_NORMAL;
++}
++
++static const struct regulator_ops rt5190a_ranged_buck_ops = {
++ .enable = regulator_enable_regmap,
++ .disable = regulator_disable_regmap,
++ .is_enabled = regulator_is_enabled_regmap,
++ .set_voltage_sel = regulator_set_voltage_sel_regmap,
++ .get_voltage_sel = regulator_get_voltage_sel_regmap,
++ .list_voltage = regulator_list_voltage_linear,
++ .set_active_discharge = regulator_set_active_discharge_regmap,
++ .get_error_flags = rt5190a_get_error_flags,
++};
++
++static const struct regulator_ops rt5190a_fixed_buck_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 = rt5190a_fixed_buck_set_mode,
++ .get_mode = rt5190a_fixed_buck_get_mode,
++ .get_error_flags = rt5190a_get_error_flags,
++};
++
++static const struct regulator_ops rt5190a_fixed_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 = rt5190a_get_error_flags,
++};
++
++static irqreturn_t rt5190a_irq_handler(int irq, void *data)
++{
++ struct rt5190a_priv *priv = data;
++ __le32 raws;
++ unsigned int events, fields;
++ static const struct {
++ unsigned int bitmask;
++ unsigned int report;
++ } event_tbl[] = {
++ { RT5190A_OVERVOLT_MASK, REGULATOR_ERROR_REGULATION_OUT },
++ { RT5190A_UNDERVOLT_MASK, REGULATOR_ERROR_UNDER_VOLTAGE }
++ };
++ int i, j, ret;
++
++ ret = regmap_raw_read(priv->regmap, RT5190A_REG_OVINT, &raws,
++ sizeof(raws));
++ if (ret) {
++ dev_err(priv->dev, "Failed to read events\n");
++ return IRQ_NONE;
++ }
++
++ events = le32_to_cpu(raws);
++
++ ret = regmap_raw_write(priv->regmap, RT5190A_REG_OVINT, &raws,
++ sizeof(raws));
++ if (ret)
++ dev_err(priv->dev, "Failed to write-clear events\n");
++
++ /* Handle OV,UV events */
++ for (i = 0; i < ARRAY_SIZE(event_tbl); i++) {
++ fields = events & event_tbl[i].bitmask;
++ fields >>= ffs(event_tbl[i].bitmask) - 1;
++
++ for (j = 0; j < RT5190A_MAX_IDX; j++) {
++ if (!(fields & RT5190A_RID_BITMASK(j)))
++ continue;
++
++ regulator_notifier_call_chain(priv->rdev[j],
++ event_tbl[i].report,
++ NULL);
++ }
++ }
++
++ /* Handle CH234 OT event */
++ if (events & RT5190A_CH234OT_MASK) {
++ for (j = RT5190A_IDX_BUCK2; j < RT5190A_IDX_LDO; j++) {
++ regulator_notifier_call_chain(priv->rdev[j],
++ REGULATOR_ERROR_OVER_TEMP,
++ NULL);
++ }
++ }
++
++ /* Warning if CHIP OT occur */
++ if (events & RT5190A_CHIPOT_MASK)
++ dev_warn(priv->dev, "CHIP overheat\n");
++
++ return IRQ_HANDLED;
++}
++
++static unsigned int rt5190a_of_map_mode(unsigned int mode)
++{
++ switch (mode) {
++ case RT5190A_OPMODE_AUTO:
++ return REGULATOR_MODE_NORMAL;
++ case RT5190A_OPMODE_FPWM:
++ return REGULATOR_MODE_FAST;
++ default:
++ return REGULATOR_MODE_INVALID;
++ }
++}
++
++static int rt5190a_of_parse_cb(struct rt5190a_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;
++ struct device_node *np = match->of_node;
++ bool latchup_enable;
++ unsigned int mask = RT5190A_RID_BITMASK(rid), val;
++
++ switch (rid) {
++ case RT5190A_IDX_BUCK1:
++ case RT5190A_IDX_BUCK4:
++ case RT5190A_IDX_LDO:
++ init_data->constraints.apply_uV = 0;
++
++ if (init_data->constraints.min_uV ==
++ init_data->constraints.max_uV)
++ desc->fixed_uV = init_data->constraints.min_uV;
++ else {
++ dev_err(priv->dev,
++ "Variable voltage for fixed regulator\n");
++ return -EINVAL;
++ }
++ break;
++ default:
++ break;
++ }
++
++ latchup_enable = of_property_read_bool(np, "richtek,latchup-enable");
++
++ /* latchup: 0, default hiccup: 1 */
++ val = !latchup_enable ? mask : 0;
++
++ return regmap_update_bits(priv->regmap, RT5190A_REG_PROTMODE, mask, val);
++}
++
++static void rt5190a_fillin_regulator_desc(struct regulator_desc *desc, int rid)
++{
++ static const char * const regu_name[] = { "buck1", "buck2",
++ "buck3", "buck4",
++ "ldo" };
++ static const char * const supply[] = { NULL, "vin2", "vin3", "vin4",
++ "vinldo" };
++
++ desc->name = regu_name[rid];
++ desc->supply_name = supply[rid];
++ desc->owner = THIS_MODULE;
++ desc->type = REGULATOR_VOLTAGE;
++ desc->id = rid;
++ desc->enable_reg = RT5190A_REG_ENABLE;
++ desc->enable_mask = RT5190A_RID_BITMASK(rid);
++ desc->active_discharge_reg = RT5190A_REG_DISCHARGE;
++ desc->active_discharge_mask = RT5190A_RID_BITMASK(rid);
++ desc->active_discharge_on = RT5190A_RID_BITMASK(rid);
++
++ switch (rid) {
++ case RT5190A_IDX_BUCK1:
++ desc->active_discharge_mask = RT5190A_BUCK1_DISCHG_MASK;
++ desc->active_discharge_on = RT5190A_BUCK1_DISCHG_ONVAL;
++ desc->n_voltages = 1;
++ desc->ops = &rt5190a_fixed_buck_ops;
++ desc->of_map_mode = rt5190a_of_map_mode;
++ break;
++ case RT5190A_IDX_BUCK2:
++ desc->vsel_reg = RT5190A_REG_BUCK2VSEL;
++ desc->vsel_mask = RT5190A_VSEL_MASK;
++ desc->min_uV = RT5190A_BUCK23_MINUV;
++ desc->uV_step = RT5190A_BUCK23_STEPUV;
++ desc->n_voltages = RT5190A_BUCK23_STEPNUM;
++ desc->ops = &rt5190a_ranged_buck_ops;
++ break;
++ case RT5190A_IDX_BUCK3:
++ desc->vsel_reg = RT5190A_REG_BUCK3VSEL;
++ desc->vsel_mask = RT5190A_VSEL_MASK;
++ desc->min_uV = RT5190A_BUCK23_MINUV;
++ desc->uV_step = RT5190A_BUCK23_STEPUV;
++ desc->n_voltages = RT5190A_BUCK23_STEPNUM;
++ desc->ops = &rt5190a_ranged_buck_ops;
++ break;
++ case RT5190A_IDX_BUCK4:
++ desc->n_voltages = 1;
++ desc->ops = &rt5190a_fixed_buck_ops;
++ desc->of_map_mode = rt5190a_of_map_mode;
++ break;
++ case RT5190A_IDX_LDO:
++ desc->n_voltages = 1;
++ desc->ops = &rt5190a_fixed_ldo_ops;
++ break;
++ }
++}
++
++static struct of_regulator_match rt5190a_regulator_match[] = {
++ { .name = "buck1", },
++ { .name = "buck2", },
++ { .name = "buck3", },
++ { .name = "buck4", },
++ { .name = "ldo", }
++};
++
++static int rt5190a_parse_regulator_dt_data(struct rt5190a_priv *priv)
++{
++ struct device_node *regulator_np;
++ struct regulator_desc *reg_desc;
++ struct of_regulator_match *match;
++ int i, ret;
++
++ for (i = 0; i < RT5190A_MAX_IDX; i++) {
++ reg_desc = priv->rdesc + i;
++ match = rt5190a_regulator_match + i;
++
++ rt5190a_fillin_regulator_desc(reg_desc, i);
++
++ match->desc = reg_desc;
++ }
++
++ regulator_np = of_get_child_by_name(priv->dev->of_node, "regulators");
++ if (!regulator_np) {
++ dev_err(priv->dev, "Could not find 'regulators' node\n");
++ return -ENODEV;
++ }
++
++ ret = of_regulator_match(priv->dev, regulator_np,
++ rt5190a_regulator_match,
++ ARRAY_SIZE(rt5190a_regulator_match));
++
++ of_node_put(regulator_np);
++
++ if (ret < 0) {
++ dev_err(priv->dev,
++ "Error parsing regulator init data: %d\n", ret);
++ return ret;
++ }
++
++ for (i = 0; i < RT5190A_MAX_IDX; i++) {
++ match = rt5190a_regulator_match + i;
++
++ ret = rt5190a_of_parse_cb(priv, i, match);
++ if (ret) {
++ dev_err(priv->dev, "Failed in [%d] of_parse_cb\n", i);
++ return ret;
++ }
++ }
++
++ return 0;
++}
++
++static const struct reg_sequence rt5190a_init_patch[] = {
++ { 0x09, 0x3d, },
++ { 0x0a, 0x3e, },
++ { 0x0b, 0x01, },
++ { 0x10, 0xff, },
++ { 0x11, 0xff, },
++ { 0x12, 0xff, },
++ { 0x13, 0xff, },
++ { 0x14, 0, },
++ { 0x15, 0, },
++ { 0x16, 0x3e, },
++ { 0x17, 0, }
++};
++
++static int rt5190a_device_initialize(struct rt5190a_priv *priv)
++{
++ bool mute_enable;
++ int ret;
++
++ ret = regmap_register_patch(priv->regmap, rt5190a_init_patch,
++ ARRAY_SIZE(rt5190a_init_patch));
++ if (ret) {
++ dev_err(priv->dev, "Failed to do register patch\n");
++ return ret;
++ }
++
++ mute_enable = device_property_read_bool(priv->dev,
++ "richtek,mute-enable");
++
++ if (mute_enable) {
++ ret = regmap_write(priv->regmap, RT5190A_REG_MUTECNTL, 0x00);
++ if (ret) {
++ dev_err(priv->dev, "Failed to enable mute function\n");
++ return ret;
++ }
++ }
++
++ 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");
projects / openwrt / openwrt.git / commitdiff