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[media] media: i2c: ths8200: support asynchronous probing 

This patch supports both synchronous and asynchronous
ths8200 subdevice probing.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Lad, Prabhakar 2013-06-22 05:46:34 -03:00 committed by Mauro Carvalho Chehab
parent 9082a7c66c
commit ed29f89497
1 changed files with 8 additions and 1 deletions
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9
drivers/media/i2c/ths8200.c
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@ -21,6 +21,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/v4l2-dv-timings.h> #include <linux/v4l2-dv-timings.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h> #include <media/v4l2-device.h>
#include "ths8200_regs.h" #include "ths8200_regs.h"
@ -500,6 +501,7 @@ static int ths8200_probe(struct i2c_client *client,
{ {
struct ths8200_state *state; struct ths8200_state *state;
struct v4l2_subdev *sd; struct v4l2_subdev *sd;
int error;
/* Check if the adapter supports the needed features */ /* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
@ -517,6 +519,10 @@ static int ths8200_probe(struct i2c_client *client,
ths8200_core_init(sd); ths8200_core_init(sd);
error = v4l2_async_register_subdev(&state->sd);
if (error)
return error;
v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
client->addr << 1, client->adapter->name); client->addr << 1, client->adapter->name);
@ -526,12 +532,13 @@ static int ths8200_probe(struct i2c_client *client,
static int ths8200_remove(struct i2c_client *client) static int ths8200_remove(struct i2c_client *client)
{ {
struct v4l2_subdev *sd = i2c_get_clientdata(client); struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ths8200_state *decoder = to_state(sd);
v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name, v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name,
client->addr << 1, client->adapter->name); client->addr << 1, client->adapter->name);
ths8200_s_power(sd, false); ths8200_s_power(sd, false);
v4l2_async_unregister_subdev(&decoder->sd);
v4l2_device_unregister_subdev(sd); v4l2_device_unregister_subdev(sd);
return 0; return 0;