- correct cast private data from i2c_get_clientdata()
- initialization priv data
- destroy priv data
- using V4L2 controls framework
Signed-off-by: Volokh Konstantin <volok...@gmail.com>
---
drivers/staging/media/go7007/wis-tw2804.c | 72 +++++++++++++++++++++++------
1 files changed, 57 insertions(+), 15 deletions(-)
diff --git a/drivers/staging/media/go7007/wis-tw2804.c
b/drivers/staging/media/go7007/wis-tw2804.c
index 05851d3..13f0f63 100644
--- a/drivers/staging/media/go7007/wis-tw2804.c
+++ b/drivers/staging/media/go7007/wis-tw2804.c
@@ -367,10 +367,12 @@ static const struct v4l2_subdev_ops tw2804_ops = {
static int wis_tw2804_command(struct i2c_client *client,
unsigned int cmd, void *arg)
{
- struct wis_tw2804 *dec = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct wis_tw2804 *dec = to_state(sd);
+ int *input;
if (cmd == DECODER_SET_CHANNEL) {
- int *input = arg;
+ input = arg;
if (*input < 0 || *input > 3) {
printk(KERN_ERR "wis-tw2804: channel %d is not "
@@ -539,22 +541,59 @@ static int wis_tw2804_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = client->adapter;
- struct wis_tw2804 *dec;
+ struct wis_tw2804 *state;
+ struct v4l2_subdev *sd;
+ struct v4l2_ctrl *ctrl = NULL;
+ int err;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
- dec = kmalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
- if (dec == NULL)
- return -ENOMEM;
+ state = kzalloc(sizeof(struct wis_tw2804), GFP_KERNEL);
- dec->channel = -1;
- dec->norm = V4L2_STD_NTSC;
- dec->brightness = 128;
- dec->contrast = 128;
- dec->saturation = 128;
- dec->hue = 128;
- i2c_set_clientdata(client, dec);
+ if (state == NULL)
+ return -ENOMEM;
+ sd = &state->sd;
+ v4l2_i2c_subdev_init(sd, client, &tw2804_ops);
+ state->channel = -1;
+ state->norm = V4L2_STD_NTSC;
+
+ v4l2_ctrl_handler_init(&state->hdl, 10);
+ v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
+ v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 255, 1, 128);
+ v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 255, 1, 128);
+ v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_HUE, 0, 255, 1, 128);
+ v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_AUTOGAIN, 0, 1, 1, 0);
+ v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_COLOR_KILLER, 0, 1, 1, 0);
+ ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_GAIN, 0, 255, 1, 128);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_CHROMA_GAIN, 0, 255, 1, 128);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE, 0, 255, 1, 122);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ ctrl = v4l2_ctrl_new_std(&state->hdl, &tw2804_ctrl_ops,
+ V4L2_CID_RED_BALANCE, 0, 255, 1, 122);
+ if (ctrl)
+ ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ sd->ctrl_handler = &state->hdl;
+ err = state->hdl.error;
+ if (err) {
+ v4l2_ctrl_handler_free(&state->hdl);
+ kfree(state);
+ return err;
+ }
printk(KERN_DEBUG "wis-tw2804: creating TW2804 at address %d on %s\n",
client->addr, adapter->name);
@@ -564,9 +603,12 @@ static int wis_tw2804_probe(struct i2c_client *client,
static int wis_tw2804_remove(struct i2c_client *client)
{
- struct wis_tw2804 *dec = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct wis_tw2804 *state = to_state(sd);
- kfree(dec);
+ v4l2_device_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(&state->hdl);
+ kfree(state);
return 0;
}
--
1.7.7.6
--
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