Commit 092e321a authored by Niklas Söderlund's avatar Niklas Söderlund Committed by Hans Verkuil
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media: i2c: adv748x: Report correct DV timings for pattern generator 



If the pattern generator is enabled the device shall not be queried for
timings. Instead the timings programmed shall be reported as they are
the ones being used to generate the pattern.

Before this change an external HDMI source needed to be connected for
the pattern generator to work. The driver would query this external
HDMI source for timings and program the pattern generator using those.

With this change the user can control the timings and have the pattern
generator work without the need of an external HDMI source being
connected.

Signed-off-by: default avatarNiklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
parent 8a7bc891

drivers/media/i2c/adv748x/adv748x-hdmi.c

+10 −0
Original line number Diff line number Diff line
@@ -283,6 +283,16 @@ static int adv748x_hdmi_query_dv_timings(struct v4l2_subdev *sd, 


	memset(timings, 0, sizeof(struct v4l2_dv_timings));



	/*

	 * If the pattern generator is enabled the device shall not be queried

	 * for timings. Instead the timings programmed shall be reported as they

	 * are the ones being used to generate the pattern.

	 */

	if (cp_read(state, ADV748X_CP_PAT_GEN) & ADV748X_CP_PAT_GEN_EN) {

		*timings = hdmi->timings;

		return 0;

	}



	if (!adv748x_hdmi_has_signal(state))

		return -ENOLINK;