[PATCH v10 04/21] omap1-camera: move interface activation and deactivation to clock callbacks

Guennadi Liakhovetski
2013-06-11T09:27:37Z

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>
---
drivers/media/platform/soc_camera/omap1_camera.c | 27 ++++++++++++++-------
1 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/drivers/media/platform/soc_camera/omap1_camera.c b/drivers/media/platform/soc_camera/omap1_camera.c
index c42c23e..6769193 100644
--- 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,
--
1.7.2.5