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Commit 245b2b67 authored by Martin Bugge's avatar Martin Bugge Committed by Mauro Carvalho Chehab
Browse files

[media] adv7842: support g_edid ioctl 



Signed-off-by: default avatarMartin Bugge <marbugge@cisco.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 6e9071f2

drivers/media/i2c/adv7842.c

+41 −0
Original line number Diff line number Diff line
@@ -1910,6 +1910,46 @@ static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled) 
	return 0;

}



static int adv7842_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid)

{

	struct adv7842_state *state = to_state(sd);

	u8 *data = NULL;



	if (edid->pad > ADV7842_EDID_PORT_VGA)

		return -EINVAL;

	if (edid->blocks == 0)

		return -EINVAL;

	if (edid->blocks > 2)

		return -EINVAL;

	if (edid->start_block > 1)

		return -EINVAL;

	if (edid->start_block == 1)

		edid->blocks = 1;

	if (!edid->edid)

		return -EINVAL;



	switch (edid->pad) {

	case ADV7842_EDID_PORT_A:

	case ADV7842_EDID_PORT_B:

		if (state->hdmi_edid.present & (0x04 << edid->pad))

			data = state->hdmi_edid.edid;

		break;

	case ADV7842_EDID_PORT_VGA:

		if (state->vga_edid.present)

			data = state->vga_edid.edid;

		break;

	default:

		return -EINVAL;

	}

	if (!data)

		return -ENODATA;



	memcpy(edid->edid,

	       data + edid->start_block * 128,

	       edid->blocks * 128);

	return 0;

}



static int adv7842_set_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *e)

{

	struct adv7842_state *state = to_state(sd);
@@ -2722,6 +2762,7 @@ static const struct v4l2_subdev_video_ops adv7842_video_ops = { 
};



static const struct v4l2_subdev_pad_ops adv7842_pad_ops = {

	.get_edid = adv7842_get_edid,

	.set_edid = adv7842_set_edid,

};