1 // SPDX-License-Identifier: MIT
12  * __drm_atomic_helper_connector_hdmi_reset() - Initializes all HDMI @drm_connector_state resources
16  * Initializes all HDMI resources from a @drm_connector_state without
17  * actually allocating it. This is useful for HDMI drivers, in
24 	unsigned int max_bpc = connector->max_bpc;  in __drm_atomic_helper_connector_hdmi_reset()
26 	new_conn_state->max_bpc = max_bpc;  in __drm_atomic_helper_connector_hdmi_reset()
27 	new_conn_state->max_requested_bpc = max_bpc;  in __drm_atomic_helper_connector_hdmi_reset()
28 	new_conn_state->hdmi.broadcast_rgb = DRM_HDMI_BROADCAST_RGB_AUTO;  in __drm_atomic_helper_connector_hdmi_reset()
39 	state = conn_state->state;  in connector_state_get_mode()
43 	crtc = conn_state->crtc;  in connector_state_get_mode()
51 	return &crtc_state->mode;  in connector_state_get_mode()
57 	const struct drm_display_info *info = &connector->display_info;  in hdmi_is_limited_range()
66 	if (conn_state->hdmi.output_format != HDMI_COLORSPACE_RGB)  in hdmi_is_limited_range()
69 	if (conn_state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_FULL)  in hdmi_is_limited_range()
72 	if (conn_state->hdmi.broadcast_rgb == DRM_HDMI_BROADCAST_RGB_LIMITED)  in hdmi_is_limited_range()
75 	if (!info->is_hdmi)  in hdmi_is_limited_range()
87 	struct drm_device *dev = connector->dev;  in sink_supports_format_bpc()
91 	 * CTA-861-F, section 5.4 - Color Coding & Quantization states  in sink_supports_format_bpc()
105 	if (!info->is_hdmi &&  in sink_supports_format_bpc()
111 	if (!(connector->hdmi.supported_formats & BIT(format))) {  in sink_supports_format_bpc()
123 		 * is not an HDMI compliant EDID for some reason, the  in sink_supports_format_bpc()
129 		if (!(info->color_formats & DRM_COLOR_FORMAT_RGB444))  in sink_supports_format_bpc()
130 			drm_warn(dev, "HDMI Sink doesn't support RGB, something's wrong.\n");  in sink_supports_format_bpc()
132 		if (bpc == 10 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_30)) {  in sink_supports_format_bpc()
137 		if (bpc == 12 && !(info->edid_hdmi_rgb444_dc_modes & DRM_EDID_HDMI_DC_36)) {  in sink_supports_format_bpc()
154 		if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR422)) {  in sink_supports_format_bpc()
165 		 * HDMI Spec 1.3 - Section 6.5 Pixel Encodings and Color Depth  in sink_supports_format_bpc()
177 		if (!(info->color_formats & DRM_COLOR_FORMAT_YCBCR444)) {  in sink_supports_format_bpc()
182 		if (bpc == 10 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_30)) {  in sink_supports_format_bpc()
187 		if (bpc == 12 && !(info->edid_hdmi_ycbcr444_dc_modes & DRM_EDID_HDMI_DC_36)) {  in sink_supports_format_bpc()
206 	const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;  in hdmi_clock_valid()
207 	const struct drm_display_info *info = &connector->display_info;  in hdmi_clock_valid()
209 	if (info->max_tmds_clock && clock > info->max_tmds_clock * 1000)  in hdmi_clock_valid()
212 	if (funcs && funcs->tmds_char_rate_valid) {  in hdmi_clock_valid()
215 		status = funcs->tmds_char_rate_valid(connector, mode, clock);  in hdmi_clock_valid()
234 		return -EINVAL;  in hdmi_compute_clock()
238 		return -EINVAL;  in hdmi_compute_clock()
240 	conn_state->hdmi.tmds_char_rate = clock;  in hdmi_compute_clock()
251 	const struct drm_display_info *info = &connector->display_info;  in hdmi_try_format_bpc()
252 	struct drm_device *dev = connector->dev;  in hdmi_try_format_bpc()
275 		    bpc, conn_state->hdmi.tmds_char_rate);  in hdmi_try_format_bpc()
286 	struct drm_device *dev = connector->dev;  in hdmi_compute_format()
289 	 * TODO: Add support for YCbCr420 output for HDMI 2.0 capable  in hdmi_compute_format()
293 		conn_state->hdmi.output_format = HDMI_COLORSPACE_RGB;  in hdmi_compute_format()
299 	return -EINVAL;  in hdmi_compute_format()
307 	struct drm_device *dev = connector->dev;  in hdmi_compute_config()
309 				       conn_state->max_bpc,  in hdmi_compute_config()
310 				       8, connector->max_bpc);  in hdmi_compute_config()
314 	for (bpc = max_bpc; bpc >= 8; bpc -= 2) {  in hdmi_compute_config()
321 		conn_state->hdmi.output_bpc = bpc;  in hdmi_compute_config()
325 			    mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),  in hdmi_compute_config()
326 			    conn_state->hdmi.output_bpc,  in hdmi_compute_config()
327 			    drm_hdmi_connector_get_output_format_name(conn_state->hdmi.output_format),  in hdmi_compute_config()
328 			    conn_state->hdmi.tmds_char_rate);  in hdmi_compute_config()
333 	return -EINVAL;  in hdmi_compute_config()
342 		&conn_state->hdmi.infoframes.avi;  in hdmi_generate_avi_infoframe()
344 		&infoframe->data.avi;  in hdmi_generate_avi_infoframe()
345 	bool is_limited_range = conn_state->hdmi.is_limited_range;  in hdmi_generate_avi_infoframe()
354 	frame->colorspace = conn_state->hdmi.output_format;  in hdmi_generate_avi_infoframe()
365 	infoframe->set = true;  in hdmi_generate_avi_infoframe()
374 		&conn_state->hdmi.infoframes.spd;  in hdmi_generate_spd_infoframe()
376 		&infoframe->data.spd;  in hdmi_generate_spd_infoframe()
380 				      connector->hdmi.vendor,  in hdmi_generate_spd_infoframe()
381 				      connector->hdmi.product);  in hdmi_generate_spd_infoframe()
385 	frame->sdi = HDMI_SPD_SDI_PC;  in hdmi_generate_spd_infoframe()
387 	infoframe->set = true;  in hdmi_generate_spd_infoframe()
396 		&conn_state->hdmi.infoframes.hdr_drm;  in hdmi_generate_hdr_infoframe()
398 		&infoframe->data.drm;  in hdmi_generate_hdr_infoframe()
401 	if (connector->max_bpc < 10)  in hdmi_generate_hdr_infoframe()
404 	if (!conn_state->hdr_output_metadata)  in hdmi_generate_hdr_infoframe()
411 	infoframe->set = true;  in hdmi_generate_hdr_infoframe()
419 	const struct drm_display_info *info = &connector->display_info;  in hdmi_generate_hdmi_vendor_infoframe()
423 		&conn_state->hdmi.infoframes.hdmi;  in hdmi_generate_hdmi_vendor_infoframe()
425 		&infoframe->data.vendor.hdmi;  in hdmi_generate_hdmi_vendor_infoframe()
428 	if (!info->has_hdmi_infoframe)  in hdmi_generate_hdmi_vendor_infoframe()
435 	infoframe->set = true;  in hdmi_generate_hdmi_vendor_infoframe()
444 	const struct drm_display_info *info = &connector->display_info;  in hdmi_generate_infoframes()
447 	if (!info->is_hdmi)  in hdmi_generate_infoframes()
475  * drm_atomic_helper_connector_hdmi_check() - Helper to check HDMI connector atomic state
479  * Provides a default connector state check handler for HDMI connectors.
497 	new_conn_state->hdmi.is_limited_range = hdmi_is_limited_range(connector, new_conn_state);  in drm_atomic_helper_connector_hdmi_check()
507 	if (old_conn_state->hdmi.broadcast_rgb != new_conn_state->hdmi.broadcast_rgb ||  in drm_atomic_helper_connector_hdmi_check()
508 	    old_conn_state->hdmi.output_bpc != new_conn_state->hdmi.output_bpc ||  in drm_atomic_helper_connector_hdmi_check()
509 	    old_conn_state->hdmi.output_format != new_conn_state->hdmi.output_format) {  in drm_atomic_helper_connector_hdmi_check()
510 		struct drm_crtc *crtc = new_conn_state->crtc;  in drm_atomic_helper_connector_hdmi_check()
517 		crtc_state->mode_changed = true;  in drm_atomic_helper_connector_hdmi_check()
527 	const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;  in clear_device_infoframe()
528 	struct drm_device *dev = connector->dev;  in clear_device_infoframe()
533 	if (!funcs || !funcs->clear_infoframe) {  in clear_device_infoframe()
538 	ret = funcs->clear_infoframe(connector, type);  in clear_device_infoframe()
552 	ret = clear_device_infoframe(connector, old_frame->data.any.type);  in clear_infoframe()
562 	const struct drm_connector_hdmi_funcs *funcs = connector->hdmi.funcs;  in write_device_infoframe()
563 	struct drm_device *dev = connector->dev;  in write_device_infoframe()
568 	drm_dbg_kms(dev, "Writing infoframe type %x\n", frame->any.type);  in write_device_infoframe()
570 	if (!funcs || !funcs->write_infoframe) {  in write_device_infoframe()
572 		return -EINVAL;  in write_device_infoframe()
579 	ret = funcs->write_infoframe(connector, frame->any.type, buffer, len);  in write_device_infoframe()
593 	ret = write_device_infoframe(connector, &new_frame->data);  in write_infoframe()
604 	if (new_frame->set)  in write_or_clear_infoframe()
607 	if (old_frame->set && !new_frame->set)  in write_or_clear_infoframe()
614  * drm_atomic_helper_connector_hdmi_update_infoframes - Update the Infoframes
615  * @connector: A pointer to the HDMI connector
616  * @state: The HDMI connector state to generate the infoframe from
618  * This function is meant for HDMI connector drivers to write their
632 	struct drm_display_info *info = &connector->display_info;  in drm_atomic_helper_connector_hdmi_update_infoframes()
635 	if (!info->is_hdmi)  in drm_atomic_helper_connector_hdmi_update_infoframes()
638 	mutex_lock(&connector->hdmi.infoframes.lock);  in drm_atomic_helper_connector_hdmi_update_infoframes()
641 				       &old_conn_state->hdmi.infoframes.avi,  in drm_atomic_helper_connector_hdmi_update_infoframes()
642 				       &new_conn_state->hdmi.infoframes.avi);  in drm_atomic_helper_connector_hdmi_update_infoframes()
644 		goto out;  in drm_atomic_helper_connector_hdmi_update_infoframes()
646 	if (connector->hdmi.infoframes.audio.set) {  in drm_atomic_helper_connector_hdmi_update_infoframes()
648 				      &connector->hdmi.infoframes.audio);  in drm_atomic_helper_connector_hdmi_update_infoframes()
650 			goto out;  in drm_atomic_helper_connector_hdmi_update_infoframes()
654 				       &old_conn_state->hdmi.infoframes.hdr_drm,  in drm_atomic_helper_connector_hdmi_update_infoframes()
655 				       &new_conn_state->hdmi.infoframes.hdr_drm);  in drm_atomic_helper_connector_hdmi_update_infoframes()
657 		goto out;  in drm_atomic_helper_connector_hdmi_update_infoframes()
660 				       &old_conn_state->hdmi.infoframes.spd,  in drm_atomic_helper_connector_hdmi_update_infoframes()
661 				       &new_conn_state->hdmi.infoframes.spd);  in drm_atomic_helper_connector_hdmi_update_infoframes()
663 		goto out;  in drm_atomic_helper_connector_hdmi_update_infoframes()
665 	if (info->has_hdmi_infoframe) {  in drm_atomic_helper_connector_hdmi_update_infoframes()
667 					       &old_conn_state->hdmi.infoframes.hdmi,  in drm_atomic_helper_connector_hdmi_update_infoframes()
668 					       &new_conn_state->hdmi.infoframes.hdmi);  in drm_atomic_helper_connector_hdmi_update_infoframes()
670 			goto out;  in drm_atomic_helper_connector_hdmi_update_infoframes()
673 out:  in drm_atomic_helper_connector_hdmi_update_infoframes()
674 	mutex_unlock(&connector->hdmi.infoframes.lock);  in drm_atomic_helper_connector_hdmi_update_infoframes()
680  * drm_atomic_helper_connector_hdmi_update_audio_infoframe - Update the Audio Infoframe
681  * @connector: A pointer to the HDMI connector
684  * This function is meant for HDMI connector drivers to update their
696 		&connector->hdmi.infoframes.audio;  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
697 	struct drm_display_info *info = &connector->display_info;  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
700 	if (!info->is_hdmi)  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
703 	mutex_lock(&connector->hdmi.infoframes.lock);  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
705 	memcpy(&infoframe->data, frame, sizeof(infoframe->data));  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
706 	infoframe->set = true;  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
710 	mutex_unlock(&connector->hdmi.infoframes.lock);  in drm_atomic_helper_connector_hdmi_update_audio_infoframe()
717  * drm_atomic_helper_connector_hdmi_clear_audio_infoframe - Stop sending the Audio Infoframe
718  * @connector: A pointer to the HDMI connector
720  * This function is meant for HDMI connector drivers to stop sending their
731 		&connector->hdmi.infoframes.audio;  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
732 	struct drm_display_info *info = &connector->display_info;  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
735 	if (!info->is_hdmi)  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
738 	mutex_lock(&connector->hdmi.infoframes.lock);  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
740 	infoframe->set = false;  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
744 	memset(&infoframe->data, 0, sizeof(infoframe->data));  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
746 	mutex_unlock(&connector->hdmi.infoframes.lock);  in drm_atomic_helper_connector_hdmi_clear_audio_infoframe()