[media] omap1-camera: move interface activation and deactivation to clock callbacks

When adding and removing a client, the omap1-camera driver only activates
and deactivates its camera interface respectively, which doesn't include
any client-specific actions. Move this functionality into .clock_start()
and .clock_stop() callbacks.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/platform/soc_camera/omap1_camera.c b/drivers/media/platform/soc_camera/omap1_camera.c
index c42c23e4eb7242d0dee7044eee4752b789a2c4cf..6769193c7c7bbeef27f723e98760f73ece8d0219 100644 (file)
--- a/drivers/media/platform/soc_camera/omap1_camera.c
+++ b/drivers/media/platform/soc_camera/omap1_camera.c
@@ -893,13 +893,26 @@ static void sensor_reset(struct omap1_cam_dev *pcdev, bool reset)
                CAM_WRITE(pcdev, GPIO, !reset);
 }
 
+static int omap1_cam_add_device(struct soc_camera_device *icd)
+{
+       dev_dbg(icd->parent, "OMAP1 Camera driver attached to camera %d\n",
+                       icd->devnum);
+
+       return 0;
+}
+
+static void omap1_cam_remove_device(struct soc_camera_device *icd)
+{
+       dev_dbg(icd->parent,
+               "OMAP1 Camera driver detached from camera %d\n", icd->devnum);
+}
+
 /*
  * The following two functions absolutely depend on the fact, that
  * there can be only one camera on OMAP1 camera sensor interface
  */
-static int omap1_cam_add_device(struct soc_camera_device *icd)
+static int omap1_cam_clock_start(struct soc_camera_host *ici)
 {
-       struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
        struct omap1_cam_dev *pcdev = ici->priv;
        u32 ctrlclock;
 
@@ -937,14 +950,11 @@ static int omap1_cam_add_device(struct soc_camera_device *icd)
 
        sensor_reset(pcdev, false);
 
-       dev_dbg(icd->parent, "OMAP1 Camera driver attached to camera %d\n",
-                       icd->devnum);
        return 0;
 }
 
-static void omap1_cam_remove_device(struct soc_camera_device *icd)
+static void omap1_cam_clock_stop(struct soc_camera_host *ici)
 {
-       struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
        struct omap1_cam_dev *pcdev = ici->priv;
        u32 ctrlclock;
 
@@ -965,9 +975,6 @@ static void omap1_cam_remove_device(struct soc_camera_device *icd)
        CAM_WRITE(pcdev, CTRLCLOCK, ctrlclock & ~MCLK_EN);
 
        clk_disable(pcdev->clk);
-
-       dev_dbg(icd->parent,
-               "OMAP1 Camera driver detached from camera %d\n", icd->devnum);
 }
 
 /* Duplicate standard formats based on host capability of byte swapping */
@@ -1525,6 +1532,8 @@ static struct soc_camera_host_ops omap1_host_ops = {
        .owner          = THIS_MODULE,
        .add            = omap1_cam_add_device,
        .remove         = omap1_cam_remove_device,
+       .clock_start    = omap1_cam_clock_start,
+       .clock_stop     = omap1_cam_clock_stop,
        .get_formats    = omap1_cam_get_formats,
        .set_crop       = omap1_cam_set_crop,
        .set_fmt        = omap1_cam_set_fmt,