power: pmic: add the max8997 controller for DM

Add the max8997 controller for Driver model.
Exynos4210 is using max8997 pmic controller.
(pmic_max8997.c should be deprecated.)

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

drivers/power/pmic/Kconfig

@@ -61,6 +61,21 @@ config DM_PMIC_MAX8998
 	This config enables implementation of driver-model pmic uclass features
 	for PMIC MAX8998. The driver implements read/write operations.
 
+config PMIC_MAX8997
+	bool "Enable Driver Model for PMIC MAX8997"
+	depends on DM_PMIC
+	---help---
+	This config enables implementation of driver-model pmic uclass features
+	for PMIC MAX8997. The driver implements read/write operations.
+	This is a Power Management IC with RTC, Fuel Gauge, MUIC control on Chip.
+	- 21x LDOs
+	- 12x GPIOs
+	- Haptic Motor driver
+	- RTC with two alarms
+	- Fueal Gauge and One backup battery charger
+	- MUIC
+	- Others
+
 config PMIC_PM8916
 	bool "Enable Driver Model for Qualcomm PM8916 PMIC"
 	depends on DM_PMIC

drivers/power/pmic/Makefile

@@ -12,6 +12,7 @@ obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
 obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
 obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
 obj-$(CONFIG_PMIC_ACT8846) += act8846.o
+obj-$(CONFIG_PMIC_MAX8997) += max8997.o
 obj-$(CONFIG_PMIC_PM8916) += pm8916.o
 obj-$(CONFIG_PMIC_RK808) += rk808.o
 obj-$(CONFIG_PMIC_RN5T567) += rn5t567.o

drivers/power/pmic/max8997.c

@@ -0,0 +1,61 @@
+/*
+ *  Copyright (C) 2016 Samsung Electronics
+ *  Jaehoon Chung <jh80.chung@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/max8997_pmic.h>
+#include <errno.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int max8997_reg_count(struct udevice *dev)
+{
+	return PMIC_NUM_OF_REGS;
+}
+
+static int max8997_write(struct udevice *dev, uint reg, const uint8_t *buff,
+		int len)
+{
+	int ret;
+
+	ret = dm_i2c_write(dev, reg, buff, len);
+	if (ret)
+		error("write error to device: %p register: %#x!", dev, reg);
+
+	return ret;
+}
+
+static int max8997_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+	int ret;
+
+	ret = dm_i2c_read(dev, reg, buff, len);
+	if (ret)
+		error("read error from device: %p register: %#x!", dev, reg);
+
+	return ret;
+}
+
+static struct dm_pmic_ops max8997_ops = {
+	.reg_count = max8997_reg_count,
+	.read	= max8997_read,
+	.write	= max8997_write,
+};
+
+static const struct udevice_id max8997_ids[] = {
+	{ .compatible = "maxim,max8997" },
+	{ },
+};
+
+U_BOOT_DRIVER(pmic_max8997) = {
+	.name		= "max8997_pmic",
+	.id		= UCLASS_PMIC,
+	.of_match	= max8997_ids,
+	.ops		= &max8997_ops,
+};

drivers/power/pmic/max8998.c

@@ -7,10 +7,10 @@
 
 #include <common.h>
 #include <dm.h>
+#include <errno.h>
 #include <i2c.h>
 #include <power/pmic.h>
 #include <power/max8998_pmic.h>
-#include <errno.h>
 
 DECLARE_GLOBAL_DATA_PTR;