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Message-ID: <20221220132250.19383-6-Zeynep.Arslanbenzer@analog.com>
Date: Tue, 20 Dec 2022 16:22:49 +0300
From: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
To: <lee@...nel.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <sre@...nel.org>,
<lgirdwood@...il.com>, <broonie@...nel.org>
CC: <Zeynep.Arslanbenzer@...log.com>, <Nurettin.Bolucu@...log.com>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-pm@...r.kernel.org>
Subject: [PATCH 5/6] drivers: regulator: add MAX77659 regulator support
This patch adds regulator driver for MAX77659.
Signed-off-by: Nurettin Bolucu <Nurettin.Bolucu@...log.com>
Signed-off-by: Zeynep Arslanbenzer <Zeynep.Arslanbenzer@...log.com>
---
MAINTAINERS | 1 +
drivers/regulator/Kconfig | 8 +++
drivers/regulator/Makefile | 1 +
drivers/regulator/max77659-regulator.c | 98 ++++++++++++++++++++++++++
4 files changed, 108 insertions(+)
create mode 100644 drivers/regulator/max77659-regulator.c
diff --git a/MAINTAINERS b/MAINTAINERS
index 5cb8fa452f2d..13c062a8cda2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12649,6 +12649,7 @@ F: Documentation/devicetree/bindings/mfd/adi,max77659.yaml
F: Documentation/devicetree/bindings/power/supply/adi,max77659-charger.yaml
F: drivers/mfd/max77659.c
F: drivers/power/supply/max77659-charger.c
+F: drivers/regulator/max77659-regulator.c
F: include/linux/mfd/max77659.h
MAXIM MAX77714 PMIC MFD DRIVER
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 820c9a0788e5..4a9852c7050f 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -573,6 +573,14 @@ config REGULATOR_MAX77650
Semiconductor. This device has a SIMO with three independent
power rails and an LDO.
+config REGULATOR_MAX77659
+ tristate "Analog Devices MAX77659 Regulator"
+ depends on MFD_MAX77659
+ help
+ Regulator driver for MAX77659 PMIC from Analog Devices.
+ This driver supports an LDO regulator.
+ Say Y here to enable the regulator driver.
+
config REGULATOR_MAX8649
tristate "Maxim 8649 voltage regulator"
depends on I2C
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index b9f5eb35bf5f..a7e91b56fb3f 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -70,6 +70,7 @@ obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
obj-$(CONFIG_REGULATOR_MAX597X) += max597x-regulator.o
obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o
obj-$(CONFIG_REGULATOR_MAX77650) += max77650-regulator.o
+obj-$(CONFIG_REGULATOR_MAX77659) += max77659-regulator.o
obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o
obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o
obj-$(CONFIG_REGULATOR_MAX8893) += max8893.o
diff --git a/drivers/regulator/max77659-regulator.c b/drivers/regulator/max77659-regulator.c
new file mode 100644
index 000000000000..03a565013851
--- /dev/null
+++ b/drivers/regulator/max77659-regulator.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <linux/mfd/max77659.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+#define MAX77659_LDO_VOLT_REG_MAX 0x7F
+#define MAX77659_LDO_VOLT_N_RANGE 0x80
+#define MAX77659_LDO_VOLT_STEP 25000
+#define MAX77659_LDO_VOLT_BASE 500000
+
+#define MAX77659_REG_CNFG_LDO0_A 0x38
+#define MAX77659_REG_CNFG_LDO0_B 0x39
+
+#define MAX77659_BITS_CONFIG_LDO0_A_TV_LDO GENMASK(6, 0)
+#define MAX77659_BITS_CONFIG_LDO0_B_EN_LDO GENMASK(2, 0)
+
+/*
+ * 0.500 to 3.675V (25mV step)
+ */
+static const struct linear_range MAX77659_LDO_volts[] = {
+ REGULATOR_LINEAR_RANGE(MAX77659_LDO_VOLT_BASE, 0x00, MAX77659_LDO_VOLT_REG_MAX,
+ MAX77659_LDO_VOLT_STEP),
+};
+
+static const struct regulator_ops max77659_LDO_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_ascend,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static struct regulator_desc max77659_LDO_desc = {
+ .name = "LDO",
+ .id = 0,
+ .regulators_node = of_match_ptr("regulator"),
+ .ops = &max77659_LDO_ops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ .n_linear_ranges = MAX77659_LDO_VOLT_N_RANGE,
+ .linear_ranges = MAX77659_LDO_volts,
+ .vsel_reg = MAX77659_REG_CNFG_LDO0_A,
+ .vsel_mask = MAX77659_BITS_CONFIG_LDO0_A_TV_LDO,
+ .enable_reg = MAX77659_REG_CNFG_LDO0_B,
+ .enable_mask = MAX77659_BITS_CONFIG_LDO0_B_EN_LDO,
+ .enable_val = 0x06,
+ .disable_val = 0x04,
+};
+
+static int max77659_regulator_probe(struct platform_device *pdev)
+{
+ struct regulator_dev *rdev;
+ struct regulator_config config = {};
+
+ config.dev = &pdev->dev;
+
+ rdev = devm_regulator_register(&pdev->dev, &max77659_LDO_desc, &config);
+
+ if (IS_ERR(rdev))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rdev),
+ "Failed to register regulator %s\n", max77659_LDO_desc.name);
+
+ return 0;
+}
+
+static const struct of_device_id max77659_regulator_of_id[] = {
+ { .compatible = "adi,max77659-regulator" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, max77659_regulator_of_id);
+
+static const struct platform_device_id max77659_regulator_id[] = {
+ { MAX77659_REGULATOR_NAME, 0, },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, max77659_regulator_id);
+
+static struct platform_driver max77659_regulator_driver = {
+ .driver = {
+ .name = MAX77659_REGULATOR_NAME,
+ .of_match_table = of_match_ptr(max77659_regulator_of_id),
+ },
+ .probe = max77659_regulator_probe,
+ .id_table = max77659_regulator_id,
+};
+
+module_platform_driver(max77659_regulator_driver);
+
+MODULE_DESCRIPTION("max77659 Regulator Driver");
+MODULE_AUTHOR("Nurettin.Bolucu@...log.com, Zeynep.Arslanbenzer@...log.com");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0");
--
2.25.1
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