[PATCH v3 4/5] regulators: tps65912: Add regulator driver for the TPS65912 PMIC

["Andrew F. Davis" <afd@ti.com>]

This patch adds support for TPS65912 PMIC regulators.

The regulators set consists of 4 DCDCs and 10 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 drivers/regulator/Kconfig              |   6 +
 drivers/regulator/Makefile             |   1 +
 drivers/regulator/tps65912-regulator.c | 240 +++++++++++++++++++++++++++++++++
 3 files changed, 247 insertions(+)
 create mode 100644 drivers/regulator/tps65912-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 3cb2de9..1dec96a 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -727,6 +727,12 @@ config REGULATOR_TPS65910
 	help
 	  This driver supports TPS65910/TPS65911 voltage regulator chips.
 
+config REGULATOR_TPS65912
+	tristate "TI TPS65912 Power regulator"
+	depends on MFD_TPS65912
+	help
+	    This driver supports TPS65912 voltage regulator chip.
+
 config REGULATOR_TPS80031
 	tristate "TI TPS80031/TPS80032 power regualtor driver"
 	depends on MFD_TPS80031
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 222ff5f..0f81749 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -91,6 +91,7 @@ obj-$(CONFIG_REGULATOR_TPS65218) += tps65218-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
 obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
 obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
 obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o
diff --git a/drivers/regulator/tps65912-regulator.c b/drivers/regulator/tps65912-regulator.c
new file mode 100644
index 0000000..343dae1
--- /dev/null
+++ b/drivers/regulator/tps65912-regulator.c
@@ -0,0 +1,240 @@
+/*
+ * Regulator driver for TPS65912x PMIC
+ *
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65218 driver and the previous TPS65912 driver by
+ * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
+ */
+
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+#include <linux/mfd/tps65912.h>
+
+enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
+	LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };
+
+#define TPS65912_REGULATOR(_name, _id, _ops, _vr, _er, _lr, _nlr)	\
+	{								\
+		.name			= _name,			\
+		.id			= _id,				\
+		.ops			= &_ops,			\
+		.n_voltages		= 64,				\
+		.type			= REGULATOR_VOLTAGE,		\
+		.owner			= THIS_MODULE,			\
+		.vsel_reg		= _vr,				\
+		.vsel_mask		= 0x3f,				\
+		.enable_reg		= _er,				\
+		.enable_mask		= BIT(7),			\
+		.volt_table		= NULL,				\
+		.linear_ranges		= _lr,				\
+		.n_linear_ranges	= _nlr,				\
+	}								\
+
+#define TPS65912_INFO(_id, _nm, _min, _max)	\
+	[_id] = {				\
+		.id		= _id,		\
+		.name		= _nm,		\
+		.min_uV		= _min,		\
+		.max_uV		= _max,		\
+	}
+
+static const struct regulator_linear_range tps65912_dcdc_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
+};
+
+static const struct regulator_linear_range tps65912_ldo_ranges[] = {
+	REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
+	REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
+	REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
+};
+
+static struct tps_info tps65912_pmic_regs[] = {
+	TPS65912_INFO(DCDC1, "DCDC1", 500000, 3800000),
+	TPS65912_INFO(DCDC2, "DCDC2", 500000, 3800000),
+	TPS65912_INFO(DCDC3, "DCDC3", 500000, 3800000),
+	TPS65912_INFO(DCDC4, "DCDC4", 500000, 3800000),
+	TPS65912_INFO(LDO1, "LDO1", 800000, 3300000),
+	TPS65912_INFO(LDO2, "LDO2", 800000, 3300000),
+	TPS65912_INFO(LDO3, "LDO3", 800000, 3300000),
+	TPS65912_INFO(LDO4, "LDO4", 1600000, 3300000),
+	TPS65912_INFO(LDO5, "LDO5", 1600000, 3300000),
+	TPS65912_INFO(LDO6, "LDO6", 800000, 3300000),
+	TPS65912_INFO(LDO7, "LDO7", 800000, 3300000),
+	TPS65912_INFO(LDO8, "LDO8", 800000, 3300000),
+	TPS65912_INFO(LDO9, "LDO9", 800000, 3300000),
+	TPS65912_INFO(LDO10, "LDO10", 800000, 3300000),
+};
+
+#define TPS65912_OF_MATCH(comp, label)	\
+	{				\
+		.compatible = comp,	\
+		.data = &label,		\
+	}
+
+static const struct of_device_id tps65912_regulator_of_match_table[] = {
+	TPS65912_OF_MATCH("ti,tps65912-dcdc1", tps65912_pmic_regs[DCDC1]),
+	TPS65912_OF_MATCH("ti,tps65912-dcdc2", tps65912_pmic_regs[DCDC2]),
+	TPS65912_OF_MATCH("ti,tps65912-dcdc3", tps65912_pmic_regs[DCDC3]),
+	TPS65912_OF_MATCH("ti,tps65912-dcdc4", tps65912_pmic_regs[DCDC4]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo1", tps65912_pmic_regs[LDO1]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo2", tps65912_pmic_regs[LDO2]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo3", tps65912_pmic_regs[LDO3]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo4", tps65912_pmic_regs[LDO4]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo5", tps65912_pmic_regs[LDO5]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo6", tps65912_pmic_regs[LDO6]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo7", tps65912_pmic_regs[LDO7]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo8", tps65912_pmic_regs[LDO8]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo9", tps65912_pmic_regs[LDO9]),
+	TPS65912_OF_MATCH("ti,tps65912-ldo10", tps65912_pmic_regs[LDO10]),
+	{ /*sentinel*/ },
+};
+MODULE_DEVICE_TABLE(of, tps65912_regulator_of_match_table);
+
+/* Operations permitted on DCDCx */
+static struct regulator_ops tps65912_ops_dcdc = {
+	.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,
+};
+
+/* Operations permitted on LDOx */
+static struct regulator_ops tps65912_ops_ldo = {
+	.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[] = {
+	TPS65912_REGULATOR("DCDC1", TPS65912_DCDC_1, tps65912_ops_dcdc,
+			   TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
+			   tps65912_dcdc_ranges,
+			   ARRAY_SIZE(tps65912_dcdc_ranges)),
+	TPS65912_REGULATOR("DCDC2", TPS65912_DCDC_2, tps65912_ops_dcdc,
+			   TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
+			   tps65912_dcdc_ranges,
+			   ARRAY_SIZE(tps65912_dcdc_ranges)),
+	TPS65912_REGULATOR("DCDC3", TPS65912_DCDC_3, tps65912_ops_dcdc,
+			   TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
+			   tps65912_dcdc_ranges,
+			   ARRAY_SIZE(tps65912_dcdc_ranges)),
+	TPS65912_REGULATOR("DCDC4", TPS65912_DCDC_4, tps65912_ops_dcdc,
+			   TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
+			   tps65912_dcdc_ranges,
+			   ARRAY_SIZE(tps65912_dcdc_ranges)),
+	TPS65912_REGULATOR("LDO1", TPS65912_LDO_1, tps65912_ops_ldo,
+			   TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO2", TPS65912_LDO_2, tps65912_ops_ldo,
+			   TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO3", TPS65912_LDO_3, tps65912_ops_ldo,
+			   TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO4", TPS65912_LDO_4, tps65912_ops_ldo,
+			   TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO5", TPS65912_LDO_5, tps65912_ops_ldo,
+			   TPS65912_LDO5, TPS65912_LDO5,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO6", TPS65912_LDO_6, tps65912_ops_ldo,
+			   TPS65912_LDO6, TPS65912_LDO6,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO7", TPS65912_LDO_7, tps65912_ops_ldo,
+			   TPS65912_LDO7, TPS65912_LDO7,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO8", TPS65912_LDO_8, tps65912_ops_ldo,
+			   TPS65912_LDO8, TPS65912_LDO8,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO9", TPS65912_LDO_9, tps65912_ops_ldo,
+			   TPS65912_LDO9, TPS65912_LDO9,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+	TPS65912_REGULATOR("LDO10", TPS65912_LDO_10, tps65912_ops_ldo,
+			   TPS65912_LDO10, TPS65912_LDO10,
+			   tps65912_ldo_ranges,
+			   ARRAY_SIZE(tps65912_ldo_ranges)),
+};
+
+static int tps65912_regulator_probe(struct platform_device *pdev)
+{
+	struct tps65912 *tps = dev_get_drvdata(pdev->dev.parent);
+	struct regulator_init_data *init_data;
+	const struct tps_info *template;
+	struct regulator_dev *rdev;
+	const struct of_device_id *match;
+	struct regulator_config config = { };
+	int id;
+
+	match = of_match_device(tps65912_regulator_of_match_table, &pdev->dev);
+	if (!match)
+		return -ENODEV;
+
+	template = match->data;
+	id = template->id;
+	init_data = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node,
+					       &regulators[id]);
+
+	platform_set_drvdata(pdev, tps);
+
+	tps->info[id] = &tps65912_pmic_regs[id];
+	config.dev = &pdev->dev;
+	config.init_data = init_data;
+	config.driver_data = tps;
+	config.regmap = tps->regmap;
+	config.of_node = pdev->dev.of_node;
+
+	rdev = devm_regulator_register(&pdev->dev, &regulators[id], &config);
+	if (IS_ERR(rdev)) {
+		dev_err(tps->dev, "failed to register %s regulator\n",
+			pdev->name);
+		return PTR_ERR(rdev);
+	}
+
+	return 0;
+}
+
+static struct platform_driver tps65912_regulator_driver = {
+	.driver = {
+		.name = "tps65912-pmic",
+		.of_match_table = tps65912_regulator_of_match_table,
+	},
+	.probe = tps65912_regulator_probe,
+};
+
+module_platform_driver(tps65912_regulator_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
+MODULE_ALIAS("platform:tps65912-pmic");
+MODULE_LICENSE("GPL v2");
-- 
1.9.1