[PATCH v10 03/21] pxa-camera: move interface activation and deactivation to clock callbacks

Guennadi Liakhovetski
2013-06-11T09:58:06Z

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>
---
drivers/media/platform/soc_camera/pxa_camera.c | 28 +++++++++++++++--------
1 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/drivers/media/platform/soc_camera/pxa_camera.c b/drivers/media/platform/soc_camera/pxa_camera.c
index 686edf7..d4df305 100644
--- 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,
--
1.7.2.5