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

When adding and removing a client, the pxa-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/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
index 686edf7..d4df305 100644 (file)
--- a/drivers/media/platform/soc_camera/pxa_camera.c
+++ b/drivers/media/platform/soc_camera/pxa_camera.c
@@ -955,33 +955,39 @@ static irqreturn_t pxa_camera_irq(int irq, void *data)
        return IRQ_HANDLED;
 }
 
+static int pxa_camera_add_device(struct soc_camera_device *icd)
+{
+       dev_info(icd->parent, "PXA Camera driver attached to camera %d\n",
+                icd->devnum);
+
+       return 0;
+}
+
+static void pxa_camera_remove_device(struct soc_camera_device *icd)
+{
+       dev_info(icd->parent, "PXA 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 PXA quick capture interface
  * Called with .host_lock held
  */
-static int pxa_camera_add_device(struct soc_camera_device *icd)
+static int pxa_camera_clock_start(struct soc_camera_host *ici)
 {
-       struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
        struct pxa_camera_dev *pcdev = ici->priv;
 
        pxa_camera_activate(pcdev);
 
-       dev_info(icd->parent, "PXA Camera driver attached to camera %d\n",
-                icd->devnum);
-
        return 0;
 }
 
 /* Called with .host_lock held */
-static void pxa_camera_remove_device(struct soc_camera_device *icd)
+static void pxa_camera_clock_stop(struct soc_camera_host *ici)
 {
-       struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
        struct pxa_camera_dev *pcdev = ici->priv;
 
-       dev_info(icd->parent, "PXA Camera driver detached from camera %d\n",
-                icd->devnum);
-
        /* disable capture, disable interrupts */
        __raw_writel(0x3ff, pcdev->base + CICR0);
 
@@ -1630,6 +1636,8 @@ static struct soc_camera_host_ops pxa_soc_camera_host_ops = {
        .owner          = THIS_MODULE,
        .add            = pxa_camera_add_device,
        .remove         = pxa_camera_remove_device,
+       .clock_start    = pxa_camera_clock_start,
+       .clock_stop     = pxa_camera_clock_stop,
        .set_crop       = pxa_camera_set_crop,
        .get_formats    = pxa_camera_get_formats,
        .put_formats    = pxa_camera_put_formats,