V4L/DVB (11347): mt9t031: use platform power hook

Use platform power hook to turn the camera on and off.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index 23f9ce9d67ef..2b0927bfd217 100644
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -141,8 +141,19 @@ static int get_shutter(struct soc_camera_device *icd, u32 *data)
 
 static int mt9t031_init(struct soc_camera_device *icd)
 {
+        struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+        struct soc_camera_link *icl = mt9t031->client->dev.platform_data;
         int ret;
 
+        if (icl->power) {
+                ret = icl->power(&mt9t031->client->dev, 1);
+                if (ret < 0) {
+                        dev_err(icd->vdev->parent,
+                                "Platform failed to power-on the camera.\n");
+                        return ret;
+                }
+        }
+
         /* Disable chip output, synchronous option update */
         ret = reg_write(icd, MT9T031_RESET, 1);
         if (ret >= 0)
@@ -150,13 +161,23 @@ static int mt9t031_init(struct soc_camera_device *icd)
         if (ret >= 0)
                 ret = reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2);
 
+        if (ret < 0 && icl->power)
+                icl->power(&mt9t031->client->dev, 0);
+
         return ret >= 0 ? 0 : -EIO;
 }
 
 static int mt9t031_release(struct soc_camera_device *icd)
 {
+        struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);
+        struct soc_camera_link *icl = mt9t031->client->dev.platform_data;
+
         /* Disable the chip */
         reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2);
+
+        if (icl->power)
+                icl->power(&mt9t031->client->dev, 0);
+
         return 0;
 }