[PATCH V3 6/7] regualtor: s2mps11: Add samsung s2mps11 regulator driver

* [PATCH V3 6/7] regualtor: s2mps11: Add samsung s2mps11 regulator driver
@ 2012-07-11 12:08 Sangbeom Kim
  2012-07-11 14:34 ` Mark Brown
  0 siblings, 1 reply; 2+ messages in thread
From: Sangbeom Kim @ 2012-07-11 12:08 UTC (permalink / raw)
  To: 'Mark Brown', 'Liam Girdwood'
  Cc: sameo, linux-kernel, sbkim01

This patch add Samsung S2MPS11 regulator driver.
The S2MPS11 can support 10 Bucks and 38 LDOs and RTC.
Especially, S2MPS11 is designed for high performance
Samsung application processor.

Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
---
 drivers/regulator/Kconfig   |    8 +
 drivers/regulator/Makefile  |    1 +
 drivers/regulator/s2mps11.c |  368 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 377 insertions(+), 0 deletions(-)
 create mode 100644 drivers/regulator/s2mps11.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 12c0c0e..c6c02fb 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -233,6 +233,14 @@ config REGULATOR_RC5T583
 	  through regulator interface. The device supports multiple DCDC/LDO
 	  outputs which can be controlled by i2c communication.
 
+config REGULATOR_S2MPS11
+	tristate "Samsung S2MPS11 voltage regulator"
+	depends on MFD_SEC_CORE
+	help
+	 This driver supports a Samsung S2MPS11 voltage output regulator
+	 via I2C bus. S2MPS11 is comprised of high efficient Buck converters
+	 including Dual-Phase Buck converter, Buck-Boost converter, various LDOs.
+
 config REGULATOR_S5M8767
 	tristate "Samsung S5M8767A voltage regulator"
 	depends on MFD_SEC_CORE
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 977fd46..1e31396 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
 obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
 obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
 obj-$(CONFIG_REGULATOR_RC5T583)  += rc5t583-regulator.o
+obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
 obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
 obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
new file mode 100644
index 0000000..fc9b79d
--- /dev/null
+++ b/drivers/regulator/s2mps11.c
@@ -0,0 +1,368 @@
+/*
+ * s2mps11.c
+ *
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ *              http://www.samsung.com
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/bug.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/mfd/samsung/core.h>
+#include <linux/mfd/samsung/s2mps11.h>
+
+struct s2mps11_info {
+	struct device *dev;
+	struct sec_pmic_dev *iodev;
+	struct regulator_dev **rdev;
+
+	int ramp_delay2;
+	int ramp_delay34;
+	int ramp_delay5;
+	int ramp_delay16;
+	int ramp_delay7810;
+	int ramp_delay9;
+
+	bool buck6_ramp;
+	bool buck2_ramp;
+	bool buck3_ramp;
+	bool buck4_ramp;
+};
+
+static int get_ramp_delay(int ramp_delay)
+{
+	unsigned char cnt = 0;
+
+	ramp_delay /= 6;
+
+	while (true) {
+		ramp_delay = ramp_delay >> 1;
+		if (ramp_delay == 0)
+			break;
+		cnt++;
+	}
+	return cnt;
+}
+
+static struct regulator_ops s2mps11_ldo_ops = {
+	.list_voltage		= regulator_list_voltage_linear,
+	.map_voltage		= regulator_map_voltage_linear,
+	.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,
+	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
+};
+
+static struct regulator_ops s2mps11_buck_ops = {
+	.list_voltage		= regulator_list_voltage_linear,
+	.map_voltage		= regulator_map_voltage_linear,
+	.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,
+	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
+};
+
+#define regulator_desc_ldo1(num)	{		\
+	.name		= "LDO"#num,			\
+	.id		= S2MPS11_LDO##num,		\
+	.ops		= &s2mps11_ldo_ops,		\
+	.type		= REGULATOR_VOLTAGE,		\
+	.owner		= THIS_MODULE,			\
+	.min_uV		= S2MPS11_LDO_MIN,		\
+	.uV_step	= S2MPS11_LDO_STEP1,		\
+	.n_voltages	= S2MPS11_LDO_N_VOLTAGES,	\
+	.vsel_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
+	.vsel_mask	= S2MPS11_LDO_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
+	.enable_mask	= S2MPS11_ENABLE_MASK		\
+}
+#define regulator_desc_ldo2(num)	{		\
+	.name		= "LDO"#num,			\
+	.id		= S2MPS11_LDO##num,		\
+	.ops		= &s2mps11_ldo_ops,		\
+	.type		= REGULATOR_VOLTAGE,		\
+	.owner		= THIS_MODULE,			\
+	.min_uV		= S2MPS11_LDO_MIN,		\
+	.uV_step	= S2MPS11_LDO_STEP2,		\
+	.n_voltages	= S2MPS11_LDO_N_VOLTAGES,	\
+	.vsel_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
+	.vsel_mask	= S2MPS11_LDO_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_L1CTRL + num - 1,	\
+	.enable_mask	= S2MPS11_ENABLE_MASK		\
+}
+
+#define regulator_desc_buck1_4(num)	{			\
+	.name		= "BUCK"#num,				\
+	.id		= S2MPS11_BUCK##num,			\
+	.ops		= &s2mps11_buck_ops,			\
+	.type		= REGULATOR_VOLTAGE,			\
+	.owner		= THIS_MODULE,				\
+	.min_uV		= S2MPS11_BUCK_MIN1,			\
+	.uV_step	= S2MPS11_BUCK_STEP1,			\
+	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
+	.vsel_reg	= S2MPS11_REG_B1CTRL2 + (num - 1) * 2,	\
+	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_B1CTRL1 + (num - 1) * 2,	\
+	.enable_mask	= S2MPS11_ENABLE_MASK			\
+}
+
+#define regulator_desc_buck5	{				\
+	.name		= "BUCK5",				\
+	.id		= S2MPS11_BUCK5,			\
+	.ops		= &s2mps11_buck_ops,			\
+	.type		= REGULATOR_VOLTAGE,			\
+	.owner		= THIS_MODULE,				\
+	.min_uV		= S2MPS11_BUCK_MIN1,			\
+	.uV_step	= S2MPS11_BUCK_STEP1,			\
+	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
+	.vsel_reg	= S2MPS11_REG_B5CTRL2,			\
+	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_B5CTRL1,			\
+	.enable_mask	= S2MPS11_ENABLE_MASK			\
+}
+
+#define regulator_desc_buck6_8(num)	{			\
+	.name		= "BUCK"#num,				\
+	.id		= S2MPS11_BUCK##num,			\
+	.ops		= &s2mps11_buck_ops,			\
+	.type		= REGULATOR_VOLTAGE,			\
+	.owner		= THIS_MODULE,				\
+	.min_uV		= S2MPS11_BUCK_MIN1,			\
+	.uV_step	= S2MPS11_BUCK_STEP1,			\
+	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
+	.vsel_reg	= S2MPS11_REG_B6CTRL2 + (num - 6) * 2,	\
+	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_B6CTRL1 + (num - 6) * 2,	\
+	.enable_mask	= S2MPS11_ENABLE_MASK			\
+}
+
+#define regulator_desc_buck9	{				\
+	.name		= "BUCK9",				\
+	.id		= S2MPS11_BUCK9,			\
+	.ops		= &s2mps11_buck_ops,			\
+	.type		= REGULATOR_VOLTAGE,			\
+	.owner		= THIS_MODULE,				\
+	.min_uV		= S2MPS11_BUCK_MIN3,			\
+	.uV_step	= S2MPS11_BUCK_STEP3,			\
+	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
+	.vsel_reg	= S2MPS11_REG_B9CTRL2,			\
+	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_B9CTRL1,			\
+	.enable_mask	= S2MPS11_ENABLE_MASK			\
+}
+
+#define regulator_desc_buck10	{				\
+	.name		= "BUCK10",				\
+	.id		= S2MPS11_BUCK10,			\
+	.ops		= &s2mps11_buck_ops,			\
+	.type		= REGULATOR_VOLTAGE,			\
+	.owner		= THIS_MODULE,				\
+	.min_uV		= S2MPS11_BUCK_MIN2,			\
+	.uV_step	= S2MPS11_BUCK_STEP2,			\
+	.n_voltages	= S2MPS11_BUCK_N_VOLTAGES,		\
+	.vsel_reg	= S2MPS11_REG_B9CTRL2,			\
+	.vsel_mask	= S2MPS11_BUCK_VSEL_MASK		\
+	.enable_reg	= S2MPS11_REG_B9CTRL1,			\
+	.enable_mask	= S2MPS11_ENABLE_MASK			\
+}
+
+static struct regulator_desc regulators[] = {
+	regulator_desc_ldo2(1),
+	regulator_desc_ldo1(2),
+	regulator_desc_ldo1(3),
+	regulator_desc_ldo1(4),
+	regulator_desc_ldo1(5),
+	regulator_desc_ldo2(6),
+	regulator_desc_ldo1(7),
+	regulator_desc_ldo1(8),
+	regulator_desc_ldo1(9),
+	regulator_desc_ldo1(10),
+	regulator_desc_ldo2(11),
+	regulator_desc_ldo1(12),
+	regulator_desc_ldo1(13),
+	regulator_desc_ldo1(14),
+	regulator_desc_ldo1(15),
+	regulator_desc_ldo1(16),
+	regulator_desc_ldo1(17),
+	regulator_desc_ldo1(18),
+	regulator_desc_ldo1(19),
+	regulator_desc_ldo1(20),
+	regulator_desc_ldo1(21),
+	regulator_desc_ldo2(22),
+	regulator_desc_ldo2(23),
+	regulator_desc_ldo1(24),
+	regulator_desc_ldo1(25),
+	regulator_desc_ldo1(26),
+	regulator_desc_ldo2(27),
+	regulator_desc_ldo1(28),
+	regulator_desc_ldo1(29),
+	regulator_desc_ldo1(30),
+	regulator_desc_ldo1(31),
+	regulator_desc_ldo1(32),
+	regulator_desc_ldo1(33),
+	regulator_desc_ldo1(34),
+	regulator_desc_ldo1(35),
+	regulator_desc_ldo1(36),
+	regulator_desc_ldo1(37),
+	regulator_desc_ldo1(38),
+	regulator_desc_buck1_4(1),
+	regulator_desc_buck1_4(2),
+	regulator_desc_buck1_4(3),
+	regulator_desc_buck1_4(4),
+	regulator_desc_buck5,
+	regulator_desc_buck6_8(6),
+	regulator_desc_buck6_8(7),
+	regulator_desc_buck6_8(8),
+	regulator_desc_buck9,
+	regulator_desc_buck10,
+};
+
+static __devinit int s2mps11_pmic_probe(struct platform_device *pdev)
+{
+	struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
+	struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
+	struct regulator_config config = { };
+	struct regulator_dev **rdev;
+	struct s2mps11_info *s2mps11;
+	int i, ret, size;
+	unsigned char ramp_enable, ramp_reg = 0;
+
+	if (!pdata) {
+		dev_err(pdev->dev.parent, "Platform data not supplied\n");
+		return -ENODEV;
+	}
+
+	s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
+				GFP_KERNEL);
+	if (!s2mps11)
+		return -ENOMEM;
+
+	size = sizeof(struct regulator_dev *) * S2MPS11_REGULATOR_MAX;
+	s2mps11->rdev = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
+	if (!s2mps11->rdev) {
+		return -ENOMEM;
+	}
+
+	rdev = s2mps11->rdev;
+	config.dev = &pdev->dev;
+	config.regmap = iodev->regmap;
+	platform_set_drvdata(pdev, s2mps11);
+
+	s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
+	s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
+	s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
+	s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
+	s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
+	s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
+
+	s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
+	s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
+	s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
+	s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
+
+	ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
+		(s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
+
+	if (ramp_enable) {
+		if (s2mps11->buck2_ramp)
+			ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) >> 6;
+		if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
+			ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) >> 4;
+		sec_reg_update(s2mps11->iodev, S2MPS11_REG_RAMP,
+			ramp_reg | ramp_enable, 0xff);
+	}
+
+	ramp_reg &= 0x00;
+	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) >> 6;
+	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) >> 4;
+	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) >> 2;
+	ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
+	sec_reg_update(s2mps11->iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg, 0xff);
+
+	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
+
+		config.dev = s2mps11->dev;
+		config.regmap = iodev->regmap;
+		config.init_data = pdata->regulators[i].initdata;
+		config.driver_data = s2mps11;
+
+		rdev[i] = regulator_register(&regulators[i], &config);
+		if (IS_ERR(rdev[i])) {
+			ret = PTR_ERR(rdev[i]);
+			dev_err(s2mps11->dev, "regulator init failed for %d\n",
+					i);
+			rdev[i] = NULL;
+			goto err;
+		}
+	}
+
+	return 0;
+err:
+	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
+		if (rdev[i])
+			regulator_unregister(rdev[i]);
+
+	return ret;
+}
+
+static int __devexit s2mps11_pmic_remove(struct platform_device *pdev)
+{
+	struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
+	struct regulator_dev **rdev = s2mps11->rdev;
+	int i;
+
+	for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
+		if (rdev[i])
+			regulator_unregister(rdev[i]);
+
+	return 0;
+}
+
+static const struct platform_device_id s2mps11_pmic_id[] = {
+	{ "s2mps11-pmic", 0},
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
+
+static struct platform_driver s2mps11_pmic_driver = {
+	.driver = {
+		.name = "s2mps11-pmic",
+		.owner = THIS_MODULE,
+	},
+	.probe = s2mps11_pmic_probe,
+	.remove = __devexit_p(s2mps11_pmic_remove),
+	.id_table = s2mps11_pmic_id,
+};
+
+static int __init s2mps11_pmic_init(void)
+{
+	return platform_driver_register(&s2mps11_pmic_driver);
+}
+subsys_initcall(s2mps11_pmic_init);
+
+static void __exit s2mps11_pmic_exit(void)
+{
+	platform_driver_unregister(&s2mps11_pmic_driver);
+}
+module_exit(s2mps11_pmic_exit);
+
+/* Module information */
+MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
+MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
+MODULE_LICENSE("GPL");
-- 
1.7.1



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