mfd: sec: Add support for S2MPS15 PMIC

Add support for S2MPS15 PMIC which is similar to S2MPS11 PMIC. The S2MPS15
PMIC supports 27 LDO regulators, 10 buck regulators, RTC, three 32.768KHz
clock outputs and battery charger. This patch adds initial support for
LDO and buck regulators of S2MPS15 device.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
[Alim: Added s2mps15_devs like rtc and clk and related changes]
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/sec-core.c

@@ -29,6 +29,7 @@
 #include <linux/mfd/samsung/s2mps11.h>
 #include <linux/mfd/samsung/s2mps13.h>
 #include <linux/mfd/samsung/s2mps14.h>
+#include <linux/mfd/samsung/s2mps15.h>
 #include <linux/mfd/samsung/s2mpu02.h>
 #include <linux/mfd/samsung/s5m8763.h>
 #include <linux/mfd/samsung/s5m8767.h>
@@ -96,6 +97,17 @@ static const struct mfd_cell s2mps14_devs[] = {
 	}
 };
 
+static const struct mfd_cell s2mps15_devs[] = {
+	{
+		.name = "s2mps15-regulator",
+	}, {
+		.name = "s2mps15-rtc",
+	}, {
+		.name = "s2mps13-clk",
+		.of_compatible = "samsung,s2mps13-clk",
+	},
+};
+
 static const struct mfd_cell s2mpa01_devs[] = {
 	{
 		.name = "s2mpa01-pmic",
@@ -121,6 +133,9 @@ static const struct of_device_id sec_dt_match[] = {
 	}, {
 		.compatible = "samsung,s2mps14-pmic",
 		.data = (void *)S2MPS14X,
+	}, {
+		.compatible = "samsung,s2mps15-pmic",
+		.data = (void *)S2MPS15X,
 	}, {
 		.compatible = "samsung,s2mpa01-pmic",
 		.data = (void *)S2MPA01,
@@ -223,6 +238,15 @@ static const struct regmap_config s2mps14_regmap_config = {
 	.cache_type = REGCACHE_FLAT,
 };
 
+static const struct regmap_config s2mps15_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = S2MPS15_REG_LDODSCH4,
+	.volatile_reg = s2mps11_volatile,
+	.cache_type = REGCACHE_FLAT,
+};
+
 static const struct regmap_config s2mpu02_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -384,6 +408,9 @@ static int sec_pmic_probe(struct i2c_client *i2c,
 	case S2MPS14X:
 		regmap = &s2mps14_regmap_config;
 		break;
+	case S2MPS15X:
+		regmap = &s2mps15_regmap_config;
+		break;
 	case S5M8763X:
 		regmap = &s5m8763_regmap_config;
 		break;
@@ -442,6 +469,10 @@ static int sec_pmic_probe(struct i2c_client *i2c,
 		sec_devs = s2mps14_devs;
 		num_sec_devs = ARRAY_SIZE(s2mps14_devs);
 		break;
+	case S2MPS15X:
+		sec_devs = s2mps15_devs;
+		num_sec_devs = ARRAY_SIZE(s2mps15_devs);
+		break;
 	case S2MPU02:
 		sec_devs = s2mpu02_devs;
 		num_sec_devs = ARRAY_SIZE(s2mpu02_devs);

drivers/mfd/sec-irq.c

@@ -407,6 +407,11 @@ static const struct regmap_irq_chip s2mps14_irq_chip = {
 	S2MPS1X_IRQ_CHIP_COMMON_DATA,
 };
 
+static const struct regmap_irq_chip s2mps15_irq_chip = {
+	.name = "s2mps15",
+	S2MPS1X_IRQ_CHIP_COMMON_DATA,
+};
+
 static const struct regmap_irq_chip s2mpu02_irq_chip = {
 	.name = "s2mpu02",
 	.irqs = s2mpu02_irqs,
@@ -466,6 +471,9 @@ int sec_irq_init(struct sec_pmic_dev *sec_pmic)
 	case S2MPS14X:
 		sec_irq_chip = &s2mps14_irq_chip;
 		break;
+	case S2MPS15X:
+		sec_irq_chip = &s2mps15_irq_chip;
+		break;
 	case S2MPU02:
 		sec_irq_chip = &s2mpu02_irq_chip;
 		break;

include/linux/mfd/samsung/core.h

@@ -44,6 +44,7 @@ enum sec_device_type {
 	S2MPS11X,
 	S2MPS13X,
 	S2MPS14X,
+	S2MPS15X,
 	S2MPU02,
 };
 

include/linux/mfd/samsung/s2mps15.h

@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2015 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LINUX_MFD_S2MPS15_H
+#define __LINUX_MFD_S2MPS15_H
+
+/* S2MPS15 registers */
+enum s2mps15_reg {
+	S2MPS15_REG_ID,
+	S2MPS15_REG_INT1,
+	S2MPS15_REG_INT2,
+	S2MPS15_REG_INT3,
+	S2MPS15_REG_INT1M,
+	S2MPS15_REG_INT2M,
+	S2MPS15_REG_INT3M,
+	S2MPS15_REG_ST1,
+	S2MPS15_REG_ST2,
+	S2MPS15_REG_PWRONSRC,
+	S2MPS15_REG_OFFSRC,
+	S2MPS15_REG_BU_CHG,
+	S2MPS15_REG_RTC_BUF,
+	S2MPS15_REG_CTRL1,
+	S2MPS15_REG_CTRL2,
+	S2MPS15_REG_RSVD1,
+	S2MPS15_REG_RSVD2,
+	S2MPS15_REG_RSVD3,
+	S2MPS15_REG_RSVD4,
+	S2MPS15_REG_RSVD5,
+	S2MPS15_REG_RSVD6,
+	S2MPS15_REG_CTRL3,
+	S2MPS15_REG_RSVD7,
+	S2MPS15_REG_RSVD8,
+	S2MPS15_REG_RSVD9,
+	S2MPS15_REG_B1CTRL1,
+	S2MPS15_REG_B1CTRL2,
+	S2MPS15_REG_B2CTRL1,
+	S2MPS15_REG_B2CTRL2,
+	S2MPS15_REG_B3CTRL1,
+	S2MPS15_REG_B3CTRL2,
+	S2MPS15_REG_B4CTRL1,
+	S2MPS15_REG_B4CTRL2,
+	S2MPS15_REG_B5CTRL1,
+	S2MPS15_REG_B5CTRL2,
+	S2MPS15_REG_B6CTRL1,
+	S2MPS15_REG_B6CTRL2,
+	S2MPS15_REG_B7CTRL1,
+	S2MPS15_REG_B7CTRL2,
+	S2MPS15_REG_B8CTRL1,
+	S2MPS15_REG_B8CTRL2,
+	S2MPS15_REG_B9CTRL1,
+	S2MPS15_REG_B9CTRL2,
+	S2MPS15_REG_B10CTRL1,
+	S2MPS15_REG_B10CTRL2,
+	S2MPS15_REG_BBCTRL1,
+	S2MPS15_REG_BBCTRL2,
+	S2MPS15_REG_BRAMP,
+	S2MPS15_REG_LDODVS1,
+	S2MPS15_REG_LDODVS2,
+	S2MPS15_REG_LDODVS3,
+	S2MPS15_REG_LDODVS4,
+	S2MPS15_REG_L1CTRL,
+	S2MPS15_REG_L2CTRL,
+	S2MPS15_REG_L3CTRL,
+	S2MPS15_REG_L4CTRL,
+	S2MPS15_REG_L5CTRL,
+	S2MPS15_REG_L6CTRL,
+	S2MPS15_REG_L7CTRL,
+	S2MPS15_REG_L8CTRL,
+	S2MPS15_REG_L9CTRL,
+	S2MPS15_REG_L10CTRL,
+	S2MPS15_REG_L11CTRL,
+	S2MPS15_REG_L12CTRL,
+	S2MPS15_REG_L13CTRL,
+	S2MPS15_REG_L14CTRL,
+	S2MPS15_REG_L15CTRL,
+	S2MPS15_REG_L16CTRL,
+	S2MPS15_REG_L17CTRL,
+	S2MPS15_REG_L18CTRL,
+	S2MPS15_REG_L19CTRL,
+	S2MPS15_REG_L20CTRL,
+	S2MPS15_REG_L21CTRL,
+	S2MPS15_REG_L22CTRL,
+	S2MPS15_REG_L23CTRL,
+	S2MPS15_REG_L24CTRL,
+	S2MPS15_REG_L25CTRL,
+	S2MPS15_REG_L26CTRL,
+	S2MPS15_REG_L27CTRL,
+	S2MPS15_REG_LDODSCH1,
+	S2MPS15_REG_LDODSCH2,
+	S2MPS15_REG_LDODSCH3,
+	S2MPS15_REG_LDODSCH4,
+};
+
+/* S2MPS15 regulator ids */
+enum s2mps15_regulators {
+	S2MPS15_LDO1,
+	S2MPS15_LDO2,
+	S2MPS15_LDO3,
+	S2MPS15_LDO4,
+	S2MPS15_LDO5,
+	S2MPS15_LDO6,
+	S2MPS15_LDO7,
+	S2MPS15_LDO8,
+	S2MPS15_LDO9,
+	S2MPS15_LDO10,
+	S2MPS15_LDO11,
+	S2MPS15_LDO12,
+	S2MPS15_LDO13,
+	S2MPS15_LDO14,
+	S2MPS15_LDO15,
+	S2MPS15_LDO16,
+	S2MPS15_LDO17,
+	S2MPS15_LDO18,
+	S2MPS15_LDO19,
+	S2MPS15_LDO20,
+	S2MPS15_LDO21,
+	S2MPS15_LDO22,
+	S2MPS15_LDO23,
+	S2MPS15_LDO24,
+	S2MPS15_LDO25,
+	S2MPS15_LDO26,
+	S2MPS15_LDO27,
+	S2MPS15_BUCK1,
+	S2MPS15_BUCK2,
+	S2MPS15_BUCK3,
+	S2MPS15_BUCK4,
+	S2MPS15_BUCK5,
+	S2MPS15_BUCK6,
+	S2MPS15_BUCK7,
+	S2MPS15_BUCK8,
+	S2MPS15_BUCK9,
+	S2MPS15_BUCK10,
+	S2MPS15_BUCK11,
+	S2MPS15_REGULATOR_MAX,
+};
+
+#define S2MPS15_LDO_VSEL_MASK		(0x3F)
+#define S2MPS15_BUCK_VSEL_MASK		(0xFF)
+
+#define S2MPS15_ENABLE_SHIFT		(0x06)
+#define S2MPS15_ENABLE_MASK		(0x03 << S2MPS15_ENABLE_SHIFT)
+
+#define S2MPS15_LDO_N_VOLTAGES		(S2MPS15_LDO_VSEL_MASK + 1)
+#define S2MPS15_BUCK_N_VOLTAGES	(S2MPS15_BUCK_VSEL_MASK + 1)
+
+#endif /* __LINUX_MFD_S2MPS15_H */