From ef6672ea35b5bb64ab42e18c1a1ffc717c31588a Mon Sep 17 00:00:00 2001
From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Tue, 30 Jul 2013 04:35:18 -0300
Subject: [PATCH] [media] V4L2: mt9m111: switch to asynchronous subdevice
probing
Convert the mt9m111 driver to asynchronous subdevice probing. Synchronous
probing is also still possible.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---
drivers/media/i2c/soc_camera/mt9m111.c | 38 ++++++++++++++++++--------
1 file changed, 26 insertions(+), 12 deletions(-)
diff --git a/drivers/media/i2c/soc_camera/mt9m111.c b/drivers/media/i2c/soc_camera/mt9m111.c
index de3605df47c5..6f4056668bbc 100644
--- a/drivers/media/i2c/soc_camera/mt9m111.c
+++ b/drivers/media/i2c/soc_camera/mt9m111.c
@@ -946,6 +946,10 @@ static int mt9m111_probe(struct i2c_client *client,
if (!mt9m111)
return -ENOMEM;
+ mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
+ if (IS_ERR(mt9m111->clk))
+ return -EPROBE_DEFER;
+
/* Default HIGHPOWER context */
mt9m111->ctx = &context_b;
@@ -963,8 +967,10 @@ static int mt9m111_probe(struct i2c_client *client,
&mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
V4L2_EXPOSURE_AUTO);
mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
- if (mt9m111->hdl.error)
- return mt9m111->hdl.error;
+ if (mt9m111->hdl.error) {
+ ret = mt9m111->hdl.error;
+ goto out_clkput;
+ }
/* Second stage probe - when a capture adapter is there */
mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
@@ -975,18 +981,25 @@ static int mt9m111_probe(struct i2c_client *client,
mt9m111->lastpage = -1;
mutex_init(&mt9m111->power_lock);
- mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
- if (IS_ERR(mt9m111->clk)) {
- ret = PTR_ERR(mt9m111->clk);
- goto eclkget;
- }
+ ret = soc_camera_power_init(&client->dev, ssdd);
+ if (ret < 0)
+ goto out_hdlfree;
ret = mt9m111_video_probe(client);
- if (ret) {
- v4l2_clk_put(mt9m111->clk);
-eclkget:
- v4l2_ctrl_handler_free(&mt9m111->hdl);
- }
+ if (ret < 0)
+ goto out_hdlfree;
+
+ mt9m111->subdev.dev = &client->dev;
+ ret = v4l2_async_register_subdev(&mt9m111->subdev);
+ if (ret < 0)
+ goto out_hdlfree;
+
+ return 0;
+
+out_hdlfree:
+ v4l2_ctrl_handler_free(&mt9m111->hdl);
+out_clkput:
+ v4l2_clk_put(mt9m111->clk);
return ret;
}
@@ -995,6 +1008,7 @@ static int mt9m111_remove(struct i2c_client *client)
{
struct mt9m111 *mt9m111 = to_mt9m111(client);
+ v4l2_async_unregister_subdev(&mt9m111->subdev);
v4l2_clk_put(mt9m111->clk);
v4l2_device_unregister_subdev(&mt9m111->subdev);
v4l2_ctrl_handler_free(&mt9m111->hdl);
--
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