[PATCH v10 06/21] mx3-camera: move interface activation and deactivation to clock callbacks

Guennadi Liakhovetski
2013-06-11T10:00:43Z

When adding and removing a client, the mx3-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/mx3_camera.c | 35 ++++++++++++++---------
1 files changed, 21 insertions(+), 14 deletions(-)

diff --git a/drivers/media/platform/soc_camera/mx3_camera.c b/drivers/media/platform/soc_camera/mx3_camera.c
index 71b9b19..1047e3e 100644
--- a/drivers/media/platform/soc_camera/mx3_camera.c
+++ b/drivers/media/platform/soc_camera/mx3_camera.c
@@ -460,8 +460,7 @@ static int mx3_camera_init_videobuf(struct vb2_queue *q,
}

/* First part of ipu_csi_init_interface() */
-static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam,
- struct soc_camera_device *icd)
+static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam)
{
u32 conf;
long rate;
@@ -505,31 +504,40 @@ static void mx3_camera_activate(struct mx3_camera_dev *mx3_cam,

clk_prepare_enable(mx3_cam->clk);
rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk);
- dev_dbg(icd->parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate);
+ dev_dbg(mx3_cam->soc_host.v4l2_dev.dev, "Set SENS_CONF to %x, rate %ld\n", conf, rate);
if (rate)
clk_set_rate(mx3_cam->clk, rate);
}

-/* Called with .host_lock held */
static int mx3_camera_add_device(struct soc_camera_device *icd)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n",
+ icd->devnum);
+
+ return 0;
+}
+
+static void mx3_camera_remove_device(struct soc_camera_device *icd)
+{
+ dev_info(icd->parent, "MX3 Camera driver detached from camera %d\n",
+ icd->devnum);
+}
+
+/* Called with .host_lock held */
+static int mx3_camera_clock_start(struct soc_camera_host *ici)
+{
struct mx3_camera_dev *mx3_cam = ici->priv;

- mx3_camera_activate(mx3_cam, icd);
+ mx3_camera_activate(mx3_cam);

mx3_cam->buf_total = 0;

- dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n",
- icd->devnum);
-
return 0;
}

/* Called with .host_lock held */
-static void mx3_camera_remove_device(struct soc_camera_device *icd)
+static void mx3_camera_clock_stop(struct soc_camera_host *ici)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
struct idmac_channel **ichan = &mx3_cam->idmac_channel[0];

@@ -539,9 +547,6 @@ static void mx3_camera_remove_device(struct soc_camera_device *icd)
}

clk_disable_unprepare(mx3_cam->clk);
-
- dev_info(icd->parent, "MX3 Camera driver detached from camera %d\n",
- icd->devnum);
}

static int test_platform_param(struct mx3_camera_dev *mx3_cam,
@@ -1124,6 +1129,8 @@ static struct soc_camera_host_ops mx3_soc_camera_host_ops = {
.owner = THIS_MODULE,
.add = mx3_camera_add_device,
.remove = mx3_camera_remove_device,
+ .clock_start = mx3_camera_clock_start,
+ .clock_stop = mx3_camera_clock_stop,
.set_crop = mx3_camera_set_crop,
.set_fmt = mx3_camera_set_fmt,
.try_fmt = mx3_camera_try_fmt,
--
1.7.2.5