[PATCH v10 20/21] imx074: support asynchronous probing

Guennadi Liakhovetski
2013-06-11T09:27:18Z

Both synchronous and asynchronous imx074 subdevice probing is supported by
this patch.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
---
drivers/media/i2c/soc_camera/imx074.c | 20 +++++++++++++++++---
1 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/media/i2c/soc_camera/imx074.c b/drivers/media/i2c/soc_camera/imx074.c
index a6a5060..84245e1 100644
--- a/drivers/media/i2c/soc_camera/imx074.c
+++ b/drivers/media/i2c/soc_camera/imx074.c
@@ -18,6 +18,7 @@
#include <linux/module.h>

#include <media/soc_camera.h>
+#include <media/v4l2-async.h>
#include <media/v4l2-clk.h>
#include <media/v4l2-subdev.h>
#include <media/v4l2-chip-ident.h>
@@ -456,13 +457,24 @@ static int imx074_probe(struct i2c_client *client,
priv->fmt = &imx074_colour_fmts[0];

priv->clk = v4l2_clk_get(&client->dev, "mclk");
- if (IS_ERR(priv->clk))
- return PTR_ERR(priv->clk);
+ if (IS_ERR(priv->clk)) {
+ dev_info(&client->dev, "Error %ld getting clock\n", PTR_ERR(priv->clk));
+ return -EPROBE_DEFER;
+ }
+
+ ret = soc_camera_power_init(&client->dev, ssdd);
+ if (ret < 0)
+ goto epwrinit;

ret = imx074_video_probe(client);
if (ret < 0)
- v4l2_clk_put(priv->clk);
+ goto eprobe;

+ return v4l2_async_register_subdev(&priv->subdev);
+
+epwrinit:
+eprobe:
+ v4l2_clk_put(priv->clk);
return ret;
}

@@ -471,7 +483,9 @@ static int imx074_remove(struct i2c_client *client)
struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
struct imx074 *priv = to_imx074(client);

+ v4l2_async_unregister_subdev(&priv->subdev);
v4l2_clk_put(priv->clk);
+
if (ssdd->free_bus)
ssdd->free_bus(ssdd);

--
1.7.2.5