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205 lines
5.8 KiB
Diff
205 lines
5.8 KiB
Diff
From b12213d474966fbf47e7afa36a6655b5b241cf36 Mon Sep 17 00:00:00 2001
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From: "Kevin.xie" <kevin.xie@starfivetech.com>
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Date: Fri, 9 Jun 2023 14:57:13 +0800
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Subject: [PATCH 071/116] regulator: starfive-jh7110: Add regulator support for
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JH7110 A type EVB.
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Add 7 regulators base on regulator framework for
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JH7110 evb HW design.
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Signed-off-by: Kevin.xie <kevin.xie@starfivetech.com>
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---
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drivers/regulator/Kconfig | 10 ++
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drivers/regulator/Makefile | 1 +
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drivers/regulator/starfive-jh7110-regulator.c | 126 ++++++++++++++++++
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include/linux/regulator/jh7110.h | 24 ++++
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4 files changed, 161 insertions(+)
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create mode 100644 drivers/regulator/starfive-jh7110-regulator.c
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create mode 100644 include/linux/regulator/jh7110.h
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--- a/drivers/regulator/Kconfig
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+++ b/drivers/regulator/Kconfig
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@@ -1335,6 +1335,16 @@ config REGULATOR_SM5703
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This driver provides support for voltage regulators of SM5703
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multi-function device.
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+config REGULATOR_STARFIVE_JH7110
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+ tristate "Starfive JH7110 PMIC"
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+ depends on I2C
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+ select REGMAP_I2C
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+ help
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+ Say y here to select this option to enable the power regulator of
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+ Starfive JH7110 PMIC.
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+ This driver supports the control of different power rails of device
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+ through regulator interface.
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+
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config REGULATOR_STM32_BOOSTER
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tristate "STMicroelectronics STM32 BOOSTER"
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depends on ARCH_STM32 || COMPILE_TEST
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--- a/drivers/regulator/Makefile
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+++ b/drivers/regulator/Makefile
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@@ -156,6 +156,7 @@ obj-$(CONFIG_REGULATOR_SC2731) += sc2731
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obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o
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obj-$(CONFIG_REGULATOR_SLG51000) += slg51000-regulator.o
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obj-$(CONFIG_REGULATOR_SM5703) += sm5703-regulator.o
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+obj-$(CONFIG_REGULATOR_STARFIVE_JH7110) += starfive-jh7110-regulator.o
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obj-$(CONFIG_REGULATOR_STM32_BOOSTER) += stm32-booster.o
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obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
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obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o
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--- /dev/null
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+++ b/drivers/regulator/starfive-jh7110-regulator.c
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@@ -0,0 +1,126 @@
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+// SPDX-License-Identifier: GPL-2.0
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+/*
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+ * Copyright (c) 2022 Starfive Technology Co., Ltd.
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+ * Author: Mason Huo <mason.huo@starfivetech.com>
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+ */
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+
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+#include <linux/err.h>
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+#include <linux/gpio.h>
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+#include <linux/i2c.h>
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+#include <linux/init.h>
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+#include <linux/interrupt.h>
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+#include <linux/module.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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+#include <linux/regulator/jh7110.h>
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+#include <linux/slab.h>
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+
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+#define JH7110_PM_POWER_SW_0 0x80
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+#define JH7110_PM_POWER_SW_1 0x81
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+#define ENABLE_MASK(id) BIT(id)
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+
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+
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+static const struct regmap_config jh7110_regmap_config = {
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+ .reg_bits = 8,
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+ .val_bits = 8,
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+ .max_register = JH7110_PM_POWER_SW_1,
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+ .cache_type = REGCACHE_FLAT,
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+};
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+
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+static const struct regulator_ops jh7110_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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+};
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+
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+#define JH7110_LDO(_id, _name, en_reg, en_mask) \
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+{\
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+ .name = (_name),\
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+ .ops = &jh7110_ldo_ops,\
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+ .of_match = of_match_ptr(_name),\
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+ .regulators_node = of_match_ptr("regulators"),\
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+ .type = REGULATOR_VOLTAGE,\
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+ .id = JH7110_ID_##_id,\
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+ .owner = THIS_MODULE,\
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+ .enable_reg = JH7110_PM_POWER_SW_##en_reg,\
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+ .enable_mask = ENABLE_MASK(en_mask),\
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+}
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+
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+static const struct regulator_desc jh7110_regulators[] = {
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+ JH7110_LDO(LDO_REG1, "hdmi_1p8", 0, 0),
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+ JH7110_LDO(LDO_REG2, "mipitx_1p8", 0, 1),
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+ JH7110_LDO(LDO_REG3, "mipirx_1p8", 0, 2),
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+ JH7110_LDO(LDO_REG4, "hdmi_0p9", 0, 3),
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+ JH7110_LDO(LDO_REG5, "mipitx_0p9", 0, 4),
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+ JH7110_LDO(LDO_REG6, "mipirx_0p9", 0, 5),
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+ JH7110_LDO(LDO_REG7, "sdio_vdd", 1, 0),
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+};
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+
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+static int jh7110_i2c_probe(struct i2c_client *i2c)
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+{
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+ struct regulator_config config = { };
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+ struct regulator_dev *rdev;
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+ struct regulator_init_data *init_data;
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+ struct regmap *regmap;
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+ int i, ret;
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+
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+ regmap = devm_regmap_init_i2c(i2c, &jh7110_regmap_config);
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+ if (IS_ERR(regmap)) {
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+ ret = PTR_ERR(regmap);
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+ dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
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+ ret);
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+ return ret;
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+ }
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+
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+ init_data = of_get_regulator_init_data(&i2c->dev, i2c->dev.of_node, NULL);
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+ if (!init_data)
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+ return -ENOMEM;
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+ config.init_data = init_data;
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+
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+ for (i = 0; i < JH7110_MAX_REGULATORS; i++) {
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+ config.dev = &i2c->dev;
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+ config.regmap = regmap;
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+
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+ rdev = devm_regulator_register(&i2c->dev,
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+ &jh7110_regulators[i], &config);
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+ if (IS_ERR(rdev)) {
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+ dev_err(&i2c->dev,
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+ "Failed to register JH7110 regulator\n");
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+ return PTR_ERR(rdev);
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+ }
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+ }
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+
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+ return 0;
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+}
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+
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+static const struct i2c_device_id jh7110_i2c_id[] = {
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+ {"jh7110_evb_reg", 0},
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+ {},
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+};
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+MODULE_DEVICE_TABLE(i2c, jh7110_i2c_id);
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+
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+#ifdef CONFIG_OF
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+static const struct of_device_id jh7110_dt_ids[] = {
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+ { .compatible = "starfive,jh7110-evb-regulator",
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+ .data = &jh7110_i2c_id[0] },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, jh7110_dt_ids);
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+#endif
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+
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+static struct i2c_driver jh7110_regulator_driver = {
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+ .driver = {
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+ .name = "jh7110-evb-regulator",
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+ .of_match_table = of_match_ptr(jh7110_dt_ids),
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+ },
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+ .probe = jh7110_i2c_probe,
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+ .id_table = jh7110_i2c_id,
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+};
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+
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+module_i2c_driver(jh7110_regulator_driver);
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+
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+MODULE_AUTHOR("Mason Huo <mason.huo@starfivetech.com>");
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+MODULE_DESCRIPTION("Regulator device driver for Starfive JH7110");
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+MODULE_LICENSE("GPL v2");
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--- /dev/null
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+++ b/include/linux/regulator/jh7110.h
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@@ -0,0 +1,24 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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+/*
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+ * Copyright (c) 2022 Starfive Technology Co., Ltd.
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+ * Author: Mason Huo <mason.huo@starfivetech.com>
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+ */
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+
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+#ifndef __LINUX_REGULATOR_JH7110_H
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+#define __LINUX_REGULATOR_JH7110_H
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+
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+#define JH7110_MAX_REGULATORS 7
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+
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+
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+enum jh7110_reg_id {
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+ JH7110_ID_LDO_REG1 = 0,
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+ JH7110_ID_LDO_REG2,
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+ JH7110_ID_LDO_REG3,
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+ JH7110_ID_LDO_REG4,
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+ JH7110_ID_LDO_REG5,
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+ JH7110_ID_LDO_REG6,
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+ JH7110_ID_LDO_REG7,
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+};
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+
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+
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+#endif /* __LINUX_REGULATOR_JH7110_H */
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