mfd: twl-core: Fix passing of platform data in the device tree case

Since we still need to rely on a mix of device tree initialized
drivers and legacy platform data initialize drivers, let's fix
the passing of platform data to twl4030-gpio.

As the twl4030 GPIO is initialized by twl-core.c, we need to register
the auxdata for twl4030 GPIO in twl-core.c.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 12 insertions, 3 deletions

diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index 29473c2c95ae..d5b3dd8a940e 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -1133,6 +1133,11 @@ static int twl_remove(struct i2c_client *client)
         return 0;
 }
 
+static struct of_dev_auxdata twl_auxdata_lookup[] = {
+        OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL),
+        { /* sentinel */ },
+};
+
 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
 static int
 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
@@ -1271,10 +1276,14 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
                 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
         }
 
-        if (node)
-                status = of_platform_populate(node, NULL, NULL, &client->dev);
-        else
+        if (node) {
+                if (pdata)
+                        twl_auxdata_lookup[0].platform_data = pdata->gpio;
+                status = of_platform_populate(node, NULL, twl_auxdata_lookup,
+                                              &client->dev);
+        } else {
                 status = add_children(pdata, irq_base, id->driver_data);
+        }
 
 fail:
         if (status < 0)