mfd: max77686/802: Remove support for board files

The driver is used only on Exynos based boards with DTS support.
After removal of board file support from max77686 and max77802 regulator
drivers, the MFD driver can be converted to DTS-only version. This
simplifies a little the code:
1. No dead (unused) entries in platform_data structure.
2. More code removed.
3. Regulator driver does not depend on allocated memory
   from MFD driver.
4. It makes also easier extending the regulator driver.

Add to the max77686 MFD driver dependency on CONFIG_OF because without
DTS the regulator drivers (max77686 and max77802) won't bind.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

2 files changed, 1 insertions, 23 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index c47b2da7986e..be5b684eefcf 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -429,6 +429,7 @@ config MFD_MAX14577
 config MFD_MAX77686
         bool "Maxim Semiconductor MAX77686/802 PMIC Support"
         depends on I2C=y
+        depends on OF
         select MFD_CORE
         select REGMAP_I2C
         select REGMAP_IRQ
diff --git a/drivers/mfd/max77686.c b/drivers/mfd/max77686.c
index 2b2f2ccda523..760d08d7923d 100644
--- a/drivers/mfd/max77686.c
+++ b/drivers/mfd/max77686.c
@@ -205,24 +205,10 @@ static const struct of_device_id max77686_pmic_dt_match[] = {
         { },
 };
 
-static struct max77686_platform_data *max77686_i2c_parse_dt_pdata(struct device
-                                                                  *dev)
-{
-        struct max77686_platform_data *pd;
-
-        pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
-        if (!pd)
-                return NULL;
-
-        dev->platform_data = pd;
-        return pd;
-}
-
 static int max77686_i2c_probe(struct i2c_client *i2c,
                               const struct i2c_device_id *id)
 {
         struct max77686_dev *max77686 = NULL;
-        struct max77686_platform_data *pdata = dev_get_platdata(&i2c->dev);
         const struct of_device_id *match;
         unsigned int data;
         int ret = 0;
@@ -233,14 +219,6 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
         const struct mfd_cell *cells;
         int n_devs;
 
-        if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node && !pdata)
-                pdata = max77686_i2c_parse_dt_pdata(&i2c->dev);
-
-        if (!pdata) {
-                dev_err(&i2c->dev, "No platform data found.\n");
-                return -EINVAL;
-        }
-
         max77686 = devm_kzalloc(&i2c->dev,
                                 sizeof(struct max77686_dev), GFP_KERNEL);
         if (!max77686)
@@ -259,7 +237,6 @@ static int max77686_i2c_probe(struct i2c_client *i2c,
         max77686->dev = &i2c->dev;
         max77686->i2c = i2c;
 
-        max77686->wakeup = pdata->wakeup;
         max77686->irq = i2c->irq;
 
         if (max77686->type == TYPE_MAX77686) {