[U-Boot] [PATCH 1/3] power: pmic: add the max8998 controller for DM

[Jaehoon Chung]

Add the max8998 controller for Driver model.
Samsung S5P series are using max8998 pmic controller.
In future, it should be supported the regulator framework.

Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
---
 drivers/power/pmic/Kconfig   |  7 +++++
 drivers/power/pmic/Makefile  |  1 +
 drivers/power/pmic/max8998.c | 61 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 69 insertions(+)
 create mode 100644 drivers/power/pmic/max8998.c

diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index ce204b3..5e244c8 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -54,6 +54,13 @@ config DM_PMIC_MAX77686
 	This config enables implementation of driver-model pmic uclass features
 	for PMIC MAX77686. The driver implements read/write operations.
 
+config DM_PMIC_MAX8998
+	bool "Enable Driver Model for PMIC MAX8998"
+	depends on DM_PMIC
+	---help---
+	This config enables implementation of driver-model pmic uclass features
+	for PMIC MAX8998. The driver implements read/write operations.
+
 config PMIC_PM8916
 	bool "Enable Driver Model for Qualcomm PM8916 PMIC"
 	depends on DM_PMIC
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index cd1c694..b4ac7d2 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -7,6 +7,7 @@
 
 obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
 obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
+obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o
 obj-$(CONFIG_DM_PMIC_PFUZE100) += pfuze100.o
 obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
 obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
diff --git a/drivers/power/pmic/max8998.c b/drivers/power/pmic/max8998.c
new file mode 100644
index 0000000..3baa8da
--- /dev/null
+++ b/drivers/power/pmic/max8998.c
@@ -0,0 +1,61 @@
+/*
+ *  Copyright (C) 2016 Samsung Electronics
+ *  Jaehoon Chung <jh80.chung at samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/max8998_pmic.h>
+#include <errno.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static int max8998_reg_count(struct udevice *dev)
+{
+	return PMIC_NUM_OF_REGS;
+}
+
+static int max8998_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 max8998_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 max8998_ops = {
+	.reg_count = max8998_reg_count,
+	.read	= max8998_read,
+	.write	= max8998_write,
+};
+
+static const struct udevice_id max8998_ids[] = {
+	{ .compatible = "maxim,max8998" },
+	{ }
+};
+
+U_BOOT_DRIVER(pmic_max8998) = {
+	.name		= "max8998_pmic",
+	.id		= UCLASS_PMIC,
+	.of_match	= max8998_ids,
+	.ops		= &max8998_ops,
+};
-- 
2.10.2