mfd: 88pm800: Add regulator sub device

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

2 files changed, 36 insertions, 0 deletions

diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c
index a475fb3c2d0c..6c954835d61e 100644
--- a/drivers/mfd/88pm800.c
+++ b/drivers/mfd/88pm800.c
@@ -157,6 +157,13 @@ static struct mfd_cell onkey_devs[] = {
          },
 };
 
+static struct mfd_cell regulator_devs[] = {
+        {
+         .name = "88pm80x-regulator",
+         .id = -1,
+        },
+};
+
 static const struct regmap_irq pm800_irqs[] = {
         /* INT0 */
         [PM800_IRQ_ONKEY] = {
@@ -339,6 +346,21 @@ static int device_rtc_init(struct pm80x_chip *chip,
         return 0;
 }
 
+static int device_regulator_init(struct pm80x_chip *chip,
+                                           struct pm80x_platform_data *pdata)
+{
+        int ret;
+
+        ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
+                              ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
+        if (ret) {
+                dev_err(chip->dev, "Failed to add regulator subdev\n");
+                return ret;
+        }
+
+        return 0;
+}
+
 static int device_irq_init_800(struct pm80x_chip *chip)
 {
         struct regmap *map = chip->regmap;
@@ -500,6 +522,12 @@ static int device_800_init(struct pm80x_chip *chip,
                 goto out;
         }
 
+        ret = device_regulator_init(chip, pdata);
+        if (ret) {
+                dev_err(chip->dev, "Failed to add regulators subdev\n");
+                goto out;
+        }
+
         return 0;
 out_dev:
         mfd_remove_devices(chip->dev);
diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h
index 4a66a5633031..97cb283cc8e1 100644
--- a/include/linux/mfd/88pm80x.h
+++ b/include/linux/mfd/88pm80x.h
@@ -307,6 +307,14 @@ struct pm80x_chip {
 
 struct pm80x_platform_data {
         struct pm80x_rtc_pdata *rtc;
+        /*
+         * For the regulator not defined, set regulators[not_defined] to be
+         * NULL. num_regulators are the number of regulators supposed to be
+         * initialized. If all regulators are not defined, set num_regulators
+         * to be 0.
+         */
+        struct regulator_init_data *regulators[PM800_ID_RG_MAX];
+        unsigned int num_regulators;
         int irq_mode;           /* Clear interrupt by read/write(0/1) */
         int batt_det;           /* enable/disable */
         int (*plat_config)(struct pm80x_chip *chip,