power: pmic: add the max8998 controller for DM

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@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index ce204b36caad6ca83cf46541ee5a02cdf2386ab1..5e244c8741c2255fed7a09e7d75896546f1964c7 100644 (file)
--- 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 cd1c6945cd2352a63e054286df658d6bd4fe18e9..b4ac7d26d0afd76689570cffcad3d35f00e08037 100644 (file)
--- 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 (file)
index 0000000..3baa8da
--- /dev/null
+++ b/drivers/power/pmic/max8998.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/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,
+};