C++ (Cpp) edid_max_audio_channels примеры использования

Пример #1

int hdmi_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
	struct device *dev = hdev->dev;

	switch (ctrl->id) {
	case V4L2_CID_TV_GET_DVI_MODE:
		ctrl->value = hdev->dvi_mode;
		break;
	case V4L2_CID_TV_HPD_STATUS:
		ctrl->value = switch_get_state(&hdev->hpd_switch);
		break;
	case V4L2_CID_TV_HDMI_STATUS:
		ctrl->value = (hdev->streaming |
				switch_get_state(&hdev->hpd_switch));
		break;
	case V4L2_CID_TV_MAX_AUDIO_CHANNELS:
		ctrl->value = edid_max_audio_channels(hdev);
		break;
	case V4L2_CID_TV_SOURCE_PHY_ADDR:
		ctrl->value = edid_source_phy_addr(hdev);
		break;
	default:
		dev_err(dev, "invalid control id\n");
		return -EINVAL;
	}

	return 0;
}

Пример #2

Файл: hdmi_drv.c Проект: advx9600/kernel-4.4-RuiEr

int hdmi_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
	struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
	struct device *dev = hdev->dev;
	int ret = 0;

	switch (ctrl->id) {
	case V4L2_CID_TV_HPD_STATUS:
		ctrl->value = switch_get_state(&hdev->hpd_switch);
		break;
	case V4L2_CID_TV_GET_DVI_MODE:
		ctrl->value = hdev->dvi_mode;
		break;
	case V4L2_CID_TV_MAX_AUDIO_CHANNELS:
		ctrl->value = edid_max_audio_channels(hdev);
		break;
	default:
		dev_err(dev, "invalid control id\n");
		ret = -EINVAL;
		break;
	}

	return ret;
}