[PATCH 3/3] regulator: add tps65219 regulator support

[Sascha Hauer <s.hauer@pengutronix.de>]

Add support for the regulators on the tps65219 PMIC. This driver
is based on the corresponding Linux driver, but limited to the barebox
regulator capabilities.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/regulator/Kconfig              |   4 +
 drivers/regulator/Makefile             |   1 +
 drivers/regulator/tps65219-regulator.c | 187 +++++++++++++++++++++++++++++++++
 3 files changed, 192 insertions(+)

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 54f27e1824..3374a511f8 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -58,6 +58,10 @@ config REGULATOR_STPMIC1
 	  an application processor as well as to external system
 	  peripherals such as DDR, Flash memories and system devices.
 
+config REGULATOR_TPS65219
+	tristate "TI TPS65219 Regulators"
+	depends on MFD_TPS65219
+
 config REGULATOR_ANATOP
 	tristate "Freescale i.MX on-chip ANATOP LDO regulators"
 	depends on MFD_SYSCON
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 54ab6ef650..a6f5b5b734 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o
 obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
 obj-$(CONFIG_REGULATOR_ARM_SCMI) += scmi-regulator.o
 obj-$(CONFIG_REGULATOR_RK808)   += rk808-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65219) += tps65219-regulator.o
diff --git a/drivers/regulator/tps65219-regulator.c b/drivers/regulator/tps65219-regulator.c
new file mode 100644
index 0000000000..f70fd64c67
--- /dev/null
+++ b/drivers/regulator/tps65219-regulator.c
@@ -0,0 +1,187 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// tps65219-regulator.c
+//
+// Regulator driver for TPS65219 PMIC
+//
+// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/
+//
+// This implementation derived from tps65218 authored by
+// "J Keerthy <j-keerthy@ti.com>"
+//
+#define DEBUG
+#include <linux/mfd/tps65219.h>
+#include <of_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/of_regulator.h>
+#include <regulator.h>
+#include <linux/device.h>
+
+struct tps65219_regulator_irq_type {
+	const char *irq_name;
+	const char *regulator_name;
+	const char *event_name;
+	unsigned long event;
+};
+
+#define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \
+			   _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \
+			   _ct, _ncl, _bpm) \
+	{								\
+		.name			= _name,			\
+		.of_match		= _of,				\
+		.regulators_node	= of_match_ptr("regulators"),	\
+		.supply_name		= _of,				\
+		.id			= _id,				\
+		.ops			= &(_ops),			\
+		.n_voltages		= _n,				\
+		.vsel_reg		= _vr,				\
+		.vsel_mask		= _vm,				\
+		.enable_reg		= _er,				\
+		.enable_mask		= _em,				\
+		.volt_table		= NULL,				\
+		.linear_ranges		= _lr,				\
+		.n_linear_ranges	= _nlr,				\
+		.fixed_uV		= _fuv,				\
+	}								\
+
+static const struct regulator_linear_range bucks_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),
+	REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),
+	REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),
+};
+
+static const struct regulator_linear_range ldos_1_2_ranges[] = {
+	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),
+	REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),
+};
+
+static const struct regulator_linear_range ldos_3_4_ranges[] = {
+	REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),
+	REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),
+	REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),
+};
+
+/* Operations permitted on BUCK1/2/3 */
+static const struct regulator_ops tps65219_bucks_ops = {
+	.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,
+	.list_voltage		= regulator_list_voltage_linear_range,
+	.map_voltage		= regulator_map_voltage_linear_range,
+};
+
+/* Operations permitted on LDO1/2 */
+static const struct regulator_ops tps65219_ldos_1_2_ops = {
+	.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,
+	.list_voltage		= regulator_list_voltage_linear_range,
+	.map_voltage		= regulator_map_voltage_linear_range,
+};
+
+/* Operations permitted on LDO3/4 */
+static const struct regulator_ops tps65219_ldos_3_4_ops = {
+	.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,
+	.list_voltage		= regulator_list_voltage_linear_range,
+	.map_voltage		= regulator_map_voltage_linear_range,
+};
+
+static const struct regulator_desc regulators[] = {
+	TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,
+			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
+			   TPS65219_REG_BUCK1_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges,
+			   3, 4000, 0, NULL, 0, 0),
+	TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,
+			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
+			   TPS65219_REG_BUCK2_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges,
+			   3, 4000, 0, NULL, 0, 0),
+	TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,
+			   REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,
+			   TPS65219_REG_BUCK3_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges,
+			   3, 0, 0, NULL, 0, 0),
+	TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,
+			   REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
+			   TPS65219_REG_LDO1_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges,
+			   2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
+	TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,
+			   REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,
+			   TPS65219_REG_LDO2_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges,
+			   2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),
+	TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,
+			   REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
+			   TPS65219_REG_LDO3_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges,
+			   3, 0, 0, NULL, 0, 0),
+	TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,
+			   REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,
+			   TPS65219_REG_LDO4_VOUT,
+			   TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,
+			   TPS65219_REG_ENABLE_CTRL,
+			   TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges,
+			   3, 0, 0, NULL, 0, 0),
+};
+
+static int tps65219_regulator_probe(struct device *dev)
+{
+	struct tps65219 *tps = dev->parent->priv;
+	struct regulator_dev *rdev;
+	struct regulator_config config = { };
+	int i;
+	struct regulator_dev *rdevtbl[7];
+
+	config.dev = tps->dev;
+	config.driver_data = tps;
+	config.regmap = tps->regmap;
+
+	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+		dev_dbg(tps->dev, "%s regul i= %d START\n", __func__, i);
+		rdev = regulator_register(tps->dev, &regulators[i],
+					       &config);
+		if (IS_ERR(rdev)) {
+			dev_err(tps->dev, "failed to register %s regulator\n",
+				regulators[i].name);
+			return PTR_ERR(rdev);
+		}
+		rdevtbl[i] = rdev;
+		dev_dbg(tps->dev, "%s regul i= %d COMPLETED\n", __func__, i);
+	}
+
+	return 0;
+}
+
+static struct driver tps65219_regulator_driver = {
+	.name = "tps65219-regulator",
+	.probe = tps65219_regulator_probe,
+};
+coredevice_platform_driver(tps65219_regulator_driver);
+
+MODULE_AUTHOR("Jerome Neanne <j-neanne@baylibre.com>");
+MODULE_DESCRIPTION("TPS65219 voltage regulator driver");
+MODULE_ALIAS("platform:tps65219-pmic");
+MODULE_LICENSE("GPL");

-- 
2.39.5