Commit 3a4ceb89 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov
Browse files

drm/vc4: hdmi: implement clear_infoframe 



Implement the clear_infoframe callback, disabling corresponding
InfoFrame type.

Acked-by: default avatarMaxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260107-limit-infoframes-2-v4-2-213d0d3bd490@oss.qualcomm.com


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
parent 7436a87d

drivers/gpu/drm/vc4/vc4_hdmi.c

+25 −0
Original line number Diff line number Diff line
@@ -624,6 +624,30 @@ static int vc4_hdmi_stop_packet(struct vc4_hdmi *vc4_hdmi, 
	return ret;

}



static int vc4_hdmi_clear_infoframe(struct drm_connector *connector,

				    enum hdmi_infoframe_type type)

{

	struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);

	struct drm_device *drm = connector->dev;

	int ret;

	int idx;



	if (!drm_dev_enter(drm, &idx))

		return 0;



	WARN_ONCE(!(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &

		    VC4_HDMI_RAM_PACKET_ENABLE),

		  "Packet RAM has to be on to store the packet.");



	ret = vc4_hdmi_stop_packet(vc4_hdmi, type, true);

	if (ret)

		drm_err(drm, "Failed to wait for infoframe to go idle: %d\n", ret);



	drm_dev_exit(idx);



	return ret;

}



static int vc4_hdmi_write_infoframe(struct drm_connector *connector,

				    enum hdmi_infoframe_type type,

				    const u8 *infoframe, size_t len)
@@ -1660,6 +1684,7 @@ vc4_hdmi_connector_clock_valid(const struct drm_connector *connector, 


static const struct drm_connector_hdmi_funcs vc4_hdmi_hdmi_connector_funcs = {

	.tmds_char_rate_valid	= vc4_hdmi_connector_clock_valid,

	.clear_infoframe	= vc4_hdmi_clear_infoframe,

	.write_infoframe	= vc4_hdmi_write_infoframe,

};