Both synchronous and asynchronous tvp514x subdevice probing is supported by
this patch.
Signed-off-by: Lad, Prabhakar <prabhakar....@ti.com>
Cc: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Cc: Hans Verkuil <hverk...@xs4all.nl>
Cc: Sakari Ailus <sakari.ai...@iki.fi>
Cc: Mauro Carvalho Chehab <mche...@redhat.com>
---
drivers/media/i2c/tvp514x.c | 20 ++++++++++++++------
1 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c
index aa94ebc..a4f0a70 100644
--- a/drivers/media/i2c/tvp514x.c
+++ b/drivers/media/i2c/tvp514x.c
@@ -34,6 +34,7 @@
#include <linux/videodev2.h>
#include <linux/module.h>
+#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-common.h>
#include <media/v4l2-mediabus.h>
@@ -102,6 +103,7 @@ struct tvp514x_decoder {
struct v4l2_ctrl_handler hdl;
struct tvp514x_reg tvp514x_regs[ARRAY_SIZE(tvp514x_reg_list_default)];
const struct tvp514x_platform_data *pdata;
+ struct v4l2_async_subdev_list asdl;
int ver;
int streaming;
@@ -941,22 +943,22 @@ tvp514x_probe(struct i2c_client *client, const struct
i2c_device_id *id)
{
struct tvp514x_decoder *decoder;
struct v4l2_subdev *sd;
+ int ret;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;
- if (!client->dev.platform_data) {
- v4l2_err(client, "No platform data!!\n");
- return -ENODEV;
- }
-
decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
if (!decoder)
return -ENOMEM;
/* Initialize the tvp514x_decoder with default configuration */
*decoder = tvp514x_dev;
+ if (!client->dev.platform_data) {
+ v4l2_err(client, "No platform data!!\n");
+ return -EPROBE_DEFER;
+ }
/* Copy default register configuration */
memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default,
sizeof(tvp514x_reg_list_default));
@@ -980,6 +982,11 @@ tvp514x_probe(struct i2c_client *client, const struct
i2c_device_id *id)
/* Register with V4L2 layer as slave device */
sd = &decoder->sd;
+ decoder->asdl.subdev = &decoder->sd;
+ decoder->asdl.dev = &client->dev;
+ ret = v4l2_async_subdev_bind(&decoder->asdl);
+ if (ret < 0)
+ return ret;
v4l2_i2c_subdev_init(sd, client, &tvp514x_ops);
v4l2_ctrl_handler_init(&decoder->hdl, 5);
@@ -1004,7 +1011,7 @@ tvp514x_probe(struct i2c_client *client, const struct
i2c_device_id *id)
v4l2_info(sd, "%s decoder driver registered !!\n", sd->name);
- return 0;
+ return v4l2_async_subdev_bound(&decoder->asdl);
}
@@ -1020,6 +1027,7 @@ static int tvp514x_remove(struct i2c_client *client)
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct tvp514x_decoder *decoder = to_decoder(sd);
+ v4l2_async_subdev_unbind(&decoder->asdl);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&decoder->hdl);
return 0;
--
1.7.4.1
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