V4L/DVB (13669): tw9910: Add sync polarity support (70da92e5) · Commits · 戴 / test

drivers/media/video/tw9910.c

+12 −2

Original line number	Diff line number	Diff line
		@@ -512,12 +512,21 @@ static int tw9910_set_bus_param(struct soc_camera_device *icd,
		{
		struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
		struct i2c_client *client = sd->priv;
		u8 val = VSSL_VVALID \| HSSL_DVALID;

		/*
		* set OUTCTR1
		*
		* We use VVALID and DVALID signals to control VSYNC and HSYNC
		* outputs, in this mode their polarity is inverted.
		*/
		return i2c_smbus_write_byte_data(client, OUTCTR1,
		VSSL_VVALID \| HSSL_DVALID);
		if (flags & SOCAM_HSYNC_ACTIVE_LOW)
		val \|= HSP_HI;

		if (flags & SOCAM_VSYNC_ACTIVE_LOW)
		val \|= VSP_HI;

		return i2c_smbus_write_byte_data(client, OUTCTR1, val);
		}

		static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
		@@ -527,6 +536,7 @@ static unsigned long tw9910_query_bus_param(struct soc_camera_device *icd)
		struct soc_camera_link *icl = to_soc_camera_link(icd);
		unsigned long flags = SOCAM_PCLK_SAMPLE_RISING \| SOCAM_MASTER \|
		SOCAM_VSYNC_ACTIVE_HIGH \| SOCAM_HSYNC_ACTIVE_HIGH \|
		SOCAM_VSYNC_ACTIVE_LOW \| SOCAM_HSYNC_ACTIVE_LOW \|
		SOCAM_DATA_ACTIVE_HIGH \| priv->info->buswidth;

		return soc_camera_apply_sensor_flags(icl, flags);