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media: i2c: tc35874x: Provides interface for obtaining audio sample rate

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Change-Id: I8eb33c48e4a3322d250cf20174e0067cad6b19ec
Signed-off-by: Meiyou Chen <cmy@rock-chips.com>
This commit is contained in:
Meiyou Chen
2020-01-14 17:07:22 +08:00
committed by Tao Huang
parent 5775fe3ffe
commit 8d720ae62d
1 changed files with 22 additions and 0 deletions
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22
drivers/media/i2c/tc35874x.c
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@@ -1742,8 +1742,27 @@ static const struct v4l2_subdev_ops tc35874x_ops = {
};
/* --------------- CUSTOM CTRLS --------------- */
static int tc35874x_get_custom_ctrl(struct v4l2_ctrl *ctrl)
{
int ret = -EINVAL;
struct tc35874x_state *state = container_of(ctrl->handler,
struct tc35874x_state, hdl);
struct v4l2_subdev *sd = &state->sd;
if (ctrl->id == TC35874X_CID_AUDIO_SAMPLING_RATE) {
ret = get_audio_sampling_rate(sd);
*ctrl->p_new.p_s32 = ret;
}
return ret;
}
static const struct v4l2_ctrl_ops tc35874x_custom_ctrl_ops = {
.g_volatile_ctrl = tc35874x_get_custom_ctrl,
};
static const struct v4l2_ctrl_config tc35874x_ctrl_audio_sampling_rate = {
.ops = &tc35874x_custom_ctrl_ops,
.id = TC35874X_CID_AUDIO_SAMPLING_RATE,
.name = "Audio sampling rate",
.type = V4L2_CTRL_TYPE_INTEGER,
@@ -1969,6 +1988,9 @@ static int tc35874x_probe(struct i2c_client *client,
/* custom controls */
state->audio_sampling_rate_ctrl = v4l2_ctrl_new_custom(&state->hdl,
&tc35874x_ctrl_audio_sampling_rate, NULL);
if (state->audio_sampling_rate_ctrl)
state->audio_sampling_rate_ctrl->flags |=
V4L2_CTRL_FLAG_VOLATILE;
state->audio_present_ctrl = v4l2_ctrl_new_custom(&state->hdl,
&tc35874x_ctrl_audio_present, NULL);