43  * DOC: High Definition Audio over HDMI and Display Port
46  * HDMI and Display Port. The audio programming sequences are divided into audio
191 static bool needs_wa_14020863754(struct intel_display *display)  in needs_wa_14020863754()  argument
193 	return DISPLAY_VERx100(display) == 3000 ||  in needs_wa_14020863754()
194 		DISPLAY_VERx100(display) == 2000 ||  in needs_wa_14020863754()
195 		DISPLAY_VERx100(display) == 1401;  in needs_wa_14020863754()
201 	struct intel_display *display = to_intel_display(crtc_state);  in audio_config_hdmi_pixel_clock()  local
211 	if (DISPLAY_VER(display) < 12 && adjusted_mode->crtc_clock > 148500)  in audio_config_hdmi_pixel_clock()
215 		drm_dbg_kms(display->drm,  in audio_config_hdmi_pixel_clock()
221 	drm_dbg_kms(display->drm,  in audio_config_hdmi_pixel_clock()
256 static int g4x_eld_buffer_size(struct intel_display *display)  in g4x_eld_buffer_size()  argument
260 	tmp = intel_de_read(display, G4X_AUD_CNTL_ST);  in g4x_eld_buffer_size()
268 	struct intel_display *display = to_intel_display(encoder);  in g4x_audio_codec_get_config()  local
273 	tmp = intel_de_read(display, G4X_AUD_CNTL_ST);  in g4x_audio_codec_get_config()
277 	intel_de_rmw(display, G4X_AUD_CNTL_ST, G4X_ELD_ADDRESS_MASK, 0);  in g4x_audio_codec_get_config()
279 	eld_buffer_size = g4x_eld_buffer_size(display);  in g4x_audio_codec_get_config()
283 		eld[i] = intel_de_read(display, G4X_HDMIW_HDMIEDID);  in g4x_audio_codec_get_config()
290 	struct intel_display *display = to_intel_display(encoder);  in g4x_audio_codec_disable()  local
294 	intel_de_rmw(display, G4X_AUD_CNTL_ST,  in g4x_audio_codec_disable()
305 	struct intel_display *display = to_intel_display(encoder);  in g4x_audio_codec_enable()  local
312 	intel_de_rmw(display, G4X_AUD_CNTL_ST,  in g4x_audio_codec_enable()
315 	eld_buffer_size = g4x_eld_buffer_size(display);  in g4x_audio_codec_enable()
319 		intel_de_write(display, G4X_HDMIW_HDMIEDID, eld[i]);  in g4x_audio_codec_enable()
321 		intel_de_write(display, G4X_HDMIW_HDMIEDID, 0);  in g4x_audio_codec_enable()
323 	drm_WARN_ON(display->drm,  in g4x_audio_codec_enable()
324 		    (intel_de_read(display, G4X_AUD_CNTL_ST) & G4X_ELD_ADDRESS_MASK) != 0);  in g4x_audio_codec_enable()
326 	intel_de_rmw(display, G4X_AUD_CNTL_ST,  in g4x_audio_codec_enable()
334 	struct intel_display *display = to_intel_display(encoder);  in hsw_dp_audio_config_update()  local
338 	intel_de_rmw(display, HSW_AUD_CFG(cpu_transcoder),  in hsw_dp_audio_config_update()
352 	struct intel_display *display = to_intel_display(encoder);  in hsw_hdmi_audio_config_update()  local
353 	struct i915_audio_component *acomp = display->audio.component;  in hsw_hdmi_audio_config_update()
361 	tmp = intel_de_read(display, HSW_AUD_CFG(cpu_transcoder));  in hsw_hdmi_audio_config_update()
369 		drm_dbg_kms(display->drm, "using N %d\n", n);  in hsw_hdmi_audio_config_update()
375 		drm_dbg_kms(display->drm, "using automatic N\n");  in hsw_hdmi_audio_config_update()
378 	intel_de_write(display, HSW_AUD_CFG(cpu_transcoder), tmp);  in hsw_hdmi_audio_config_update()
384 	tmp = intel_de_read(display, HSW_AUD_M_CTS_ENABLE(cpu_transcoder));  in hsw_hdmi_audio_config_update()
387 	intel_de_write(display, HSW_AUD_M_CTS_ENABLE(cpu_transcoder), tmp);  in hsw_hdmi_audio_config_update()
404 	struct intel_display *display = to_intel_display(encoder);  in hsw_audio_codec_disable()  local
408 	mutex_lock(&display->audio.mutex);  in hsw_audio_codec_disable()
411 	intel_de_rmw(display, HSW_AUD_CFG(cpu_transcoder),  in hsw_audio_codec_disable()
420 	intel_de_rmw(display, HSW_AUD_PIN_ELD_CP_VLD,  in hsw_audio_codec_disable()
427 	intel_de_rmw(display, HSW_AUD_PIN_ELD_CP_VLD,  in hsw_audio_codec_disable()
430 	if (needs_wa_14020863754(display))  in hsw_audio_codec_disable()
431 		intel_de_rmw(display, AUD_CHICKENBIT_REG3, DACBE_DISABLE_MIN_HBLANK_FIX, 0);  in hsw_audio_codec_disable()
433 	mutex_unlock(&display->audio.mutex);  in hsw_audio_codec_disable()
439 	struct intel_display *display = to_intel_display(encoder);  in calc_hblank_early_prog()  local
451 	cdclk = display->cdclk.hw.cdclk;  in calc_hblank_early_prog()
457 	drm_dbg_kms(display->drm,  in calc_hblank_early_prog()
502 	struct intel_display *display = to_intel_display(encoder);  in enable_audio_dsc_wa()  local
507 	if (DISPLAY_VER(display) < 11)  in enable_audio_dsc_wa()
510 	val = intel_de_read(display, AUD_CONFIG_BE);  in enable_audio_dsc_wa()
512 	if (DISPLAY_VER(display) == 11)  in enable_audio_dsc_wa()
514 	else if (DISPLAY_VER(display) >= 12)  in enable_audio_dsc_wa()
541 	intel_de_write(display, AUD_CONFIG_BE, val);  in enable_audio_dsc_wa()
548 	struct intel_display *display = to_intel_display(encoder);  in hsw_audio_codec_enable()  local
552 	mutex_lock(&display->audio.mutex);  in hsw_audio_codec_enable()
558 	if (needs_wa_14020863754(display))  in hsw_audio_codec_enable()
559 		intel_de_rmw(display, AUD_CHICKENBIT_REG3, 0, DACBE_DISABLE_MIN_HBLANK_FIX);  in hsw_audio_codec_enable()
562 	intel_de_rmw(display, HSW_AUD_PIN_ELD_CP_VLD,  in hsw_audio_codec_enable()
568 	intel_de_rmw(display, HSW_AUD_PIN_ELD_CP_VLD,  in hsw_audio_codec_enable()
579 	mutex_unlock(&display->audio.mutex);  in hsw_audio_codec_enable()
586 static void ibx_audio_regs_init(struct intel_display *display,  in ibx_audio_regs_init()  argument
590 	struct drm_i915_private *i915 = to_i915(display->drm);  in ibx_audio_regs_init()
592 	if (display->platform.valleyview || display->platform.cherryview) {  in ibx_audio_regs_init()
614 	struct intel_display *display = to_intel_display(encoder);  in ibx_audio_codec_disable()  local
620 	if (drm_WARN_ON(display->drm, port == PORT_A))  in ibx_audio_codec_disable()
623 	ibx_audio_regs_init(display, pipe, &regs);  in ibx_audio_codec_disable()
625 	mutex_lock(&display->audio.mutex);  in ibx_audio_codec_disable()
628 	intel_de_rmw(display, regs.aud_config,  in ibx_audio_codec_disable()
637 	intel_de_rmw(display, regs.aud_cntrl_st2,  in ibx_audio_codec_disable()
640 	mutex_unlock(&display->audio.mutex);  in ibx_audio_codec_disable()
650 	struct intel_display *display = to_intel_display(encoder);  in ibx_audio_codec_enable()  local
656 	if (drm_WARN_ON(display->drm, port == PORT_A))  in ibx_audio_codec_enable()
661 	ibx_audio_regs_init(display, pipe, &regs);  in ibx_audio_codec_enable()
663 	mutex_lock(&display->audio.mutex);  in ibx_audio_codec_enable()
666 	intel_de_rmw(display, regs.aud_cntrl_st2,  in ibx_audio_codec_enable()
675 	intel_de_rmw(display, regs.aud_config,  in ibx_audio_codec_enable()
683 	mutex_unlock(&display->audio.mutex);  in ibx_audio_codec_enable()
688 	struct intel_display *display = to_intel_display(crtc_state);  in intel_audio_sdp_split_update()  local
691 	if (HAS_DP20(display))  in intel_audio_sdp_split_update()
692 		intel_de_rmw(display, AUD_DP_2DOT0_CTRL(trans), AUD_ENABLE_SDP_SPLIT,  in intel_audio_sdp_split_update()
700 	struct intel_display *display = to_intel_display(encoder);  in intel_audio_compute_config()  local
707 		drm_dbg_kms(display->drm,  in intel_audio_compute_config()
736 	struct intel_display *display = to_intel_display(encoder);  in intel_audio_codec_enable()  local
737 	struct i915_audio_component *acomp = display->audio.component;  in intel_audio_codec_enable()
747 	drm_dbg_kms(display->drm,  in intel_audio_codec_enable()
754 	if (display->funcs.audio)  in intel_audio_codec_enable()
755 		display->funcs.audio->audio_codec_enable(encoder,  in intel_audio_codec_enable()
759 	mutex_lock(&display->audio.mutex);  in intel_audio_codec_enable()
761 	audio_state = &display->audio.state[cpu_transcoder];  in intel_audio_codec_enable()
767 	mutex_unlock(&display->audio.mutex);  in intel_audio_codec_enable()
778 	intel_lpe_audio_notify(display, cpu_transcoder, port, crtc_state->eld,  in intel_audio_codec_enable()
796 	struct intel_display *display = to_intel_display(encoder);  in intel_audio_codec_disable()  local
797 	struct i915_audio_component *acomp = display->audio.component;  in intel_audio_codec_disable()
807 	drm_dbg_kms(display->drm,  in intel_audio_codec_disable()
813 	if (display->funcs.audio)  in intel_audio_codec_disable()
814 		display->funcs.audio->audio_codec_disable(encoder,  in intel_audio_codec_disable()
818 	mutex_lock(&display->audio.mutex);  in intel_audio_codec_disable()
820 	audio_state = &display->audio.state[cpu_transcoder];  in intel_audio_codec_disable()
825 	mutex_unlock(&display->audio.mutex);  in intel_audio_codec_disable()
836 	intel_lpe_audio_notify(display, cpu_transcoder, port, NULL, 0, false);  in intel_audio_codec_disable()
842 	struct intel_display *display = to_intel_display(encoder);  in intel_acomp_get_config()  local
846 	mutex_lock(&display->audio.mutex);  in intel_acomp_get_config()
848 	audio_state = &display->audio.state[cpu_transcoder];  in intel_acomp_get_config()
853 	mutex_unlock(&display->audio.mutex);  in intel_acomp_get_config()
859 	struct intel_display *display = to_intel_display(encoder);  in intel_audio_codec_get_config()  local
864 	if (display->funcs.audio)  in intel_audio_codec_get_config()
865 		display->funcs.audio->audio_codec_get_config(encoder, crtc_state);  in intel_audio_codec_get_config()
888  * @display: display device
890 void intel_audio_hooks_init(struct intel_display *display)  in intel_audio_hooks_init()  argument
892 	struct drm_i915_private *i915 = to_i915(display->drm);  in intel_audio_hooks_init()
894 	if (display->platform.g4x)  in intel_audio_hooks_init()
895 		display->funcs.audio = &g4x_audio_funcs;  in intel_audio_hooks_init()
896 	else if (display->platform.valleyview || display->platform.cherryview ||  in intel_audio_hooks_init()
898 		display->funcs.audio = &ibx_audio_funcs;  in intel_audio_hooks_init()
899 	else if (display->platform.haswell || DISPLAY_VER(display) >= 8)  in intel_audio_hooks_init()
900 		display->funcs.audio = &hsw_audio_funcs;  in intel_audio_hooks_init()
908 void intel_audio_cdclk_change_pre(struct intel_display *display)  in intel_audio_cdclk_change_pre()  argument
910 	if (DISPLAY_VER(display) >= 13)  in intel_audio_cdclk_change_pre()
911 		intel_de_rmw(display, AUD_TS_CDCLK_M, AUD_TS_CDCLK_M_EN, 0);  in intel_audio_cdclk_change_pre()
920 void intel_audio_cdclk_change_post(struct intel_display *display)  in intel_audio_cdclk_change_post()  argument
924 	if (DISPLAY_VER(display) >= 13) {  in intel_audio_cdclk_change_post()
925 		get_aud_ts_cdclk_m_n(display->cdclk.hw.ref,  in intel_audio_cdclk_change_post()
926 				     display->cdclk.hw.cdclk, &aud_ts);  in intel_audio_cdclk_change_post()
928 		intel_de_write(display, AUD_TS_CDCLK_N, aud_ts.n);  in intel_audio_cdclk_change_post()
929 		intel_de_write(display, AUD_TS_CDCLK_M, aud_ts.m | AUD_TS_CDCLK_M_EN);  in intel_audio_cdclk_change_post()
930 		drm_dbg_kms(display->drm, "aud_ts_cdclk set to M=%u, N=%u\n",  in intel_audio_cdclk_change_post()
956 static void glk_force_audio_cdclk(struct intel_display *display,  in glk_force_audio_cdclk()  argument
964 	crtc = intel_first_crtc(display);  in glk_force_audio_cdclk()
969 	state = drm_atomic_state_alloc(display->drm);  in glk_force_audio_cdclk()
970 	if (drm_WARN_ON(display->drm, !state))  in glk_force_audio_cdclk()
985 	drm_WARN_ON(display->drm, ret);  in glk_force_audio_cdclk()
995 	struct intel_display *display = to_intel_display(crtc_state);  in intel_audio_min_cdclk()  local
1009 		if (DISPLAY_VER(display) == 10) {  in intel_audio_min_cdclk()
1010 			/* Display WA #1145: glk */  in intel_audio_min_cdclk()
1012 		} else if (DISPLAY_VER(display) == 9 || display->platform.broadwell) {  in intel_audio_min_cdclk()
1013 			/* Display WA #1144: skl,bxt */  in intel_audio_min_cdclk()
1022 	if (DISPLAY_VER(display) >= 9)  in intel_audio_min_cdclk()
1032 	if ((display->platform.valleyview || display->platform.cherryview) &&  in intel_audio_min_cdclk()
1041 	struct intel_display *display = to_intel_display(kdev);  in intel_audio_component_get_power()  local
1047 	wakeref = intel_display_power_get(display, POWER_DOMAIN_AUDIO_PLAYBACK);  in intel_audio_component_get_power()
1049 	if (display->audio.power_refcount++ == 0) {  in intel_audio_component_get_power()
1050 		if (DISPLAY_VER(display) >= 9) {  in intel_audio_component_get_power()
1051 			intel_de_write(display, AUD_FREQ_CNTRL,  in intel_audio_component_get_power()
1052 				       display->audio.freq_cntrl);  in intel_audio_component_get_power()
1053 			drm_dbg_kms(display->drm,  in intel_audio_component_get_power()
1055 				    display->audio.freq_cntrl);  in intel_audio_component_get_power()
1059 		if (display->platform.geminilake)  in intel_audio_component_get_power()
1060 			glk_force_audio_cdclk(display, true);  in intel_audio_component_get_power()
1062 		if (DISPLAY_VER(display) >= 10)  in intel_audio_component_get_power()
1063 			intel_de_rmw(display, AUD_PIN_BUF_CTL,  in intel_audio_component_get_power()
1073 	struct intel_display *display = to_intel_display(kdev);  in intel_audio_component_put_power()  local
1077 	if (--display->audio.power_refcount == 0)  in intel_audio_component_put_power()
1078 		if (display->platform.geminilake)  in intel_audio_component_put_power()
1079 			glk_force_audio_cdclk(display, false);  in intel_audio_component_put_power()
1081 	intel_display_power_put(display, POWER_DOMAIN_AUDIO_PLAYBACK, wakeref);  in intel_audio_component_put_power()
1087 	struct intel_display *display = to_intel_display(kdev);  in intel_audio_component_codec_wake_override()  local
1090 	if (DISPLAY_VER(display) < 9)  in intel_audio_component_codec_wake_override()
1099 	intel_de_rmw(display, HSW_AUD_CHICKENBIT,  in intel_audio_component_codec_wake_override()
1104 		intel_de_rmw(display, HSW_AUD_CHICKENBIT,  in intel_audio_component_codec_wake_override()
1115 	struct intel_display *display = to_intel_display(kdev);  in intel_audio_component_get_cdclk_freq()  local
1117 	if (drm_WARN_ON_ONCE(display->drm, !HAS_DDI(display)))  in intel_audio_component_get_cdclk_freq()
1120 	return display->cdclk.hw.cdclk;  in intel_audio_component_get_cdclk_freq()
1132 static struct intel_audio_state *find_audio_state(struct intel_display *display,  in find_audio_state()  argument
1140 		if (drm_WARN_ON(display->drm,  in find_audio_state()
1141 				cpu_transcoder >= ARRAY_SIZE(display->audio.state)))  in find_audio_state()
1144 		audio_state = &display->audio.state[cpu_transcoder];  in find_audio_state()
1156 	for_each_cpu_transcoder(display, cpu_transcoder) {  in find_audio_state()
1160 		audio_state = &display->audio.state[cpu_transcoder];  in find_audio_state()
1174 	struct intel_display *display = to_intel_display(kdev);  in intel_audio_component_sync_audio_rate()  local
1175 	struct i915_audio_component *acomp = display->audio.component;  in intel_audio_component_sync_audio_rate()
1182 	if (!HAS_DDI(display))  in intel_audio_component_sync_audio_rate()
1186 	mutex_lock(&display->audio.mutex);  in intel_audio_component_sync_audio_rate()
1188 	audio_state = find_audio_state(display, port, cpu_transcoder);  in intel_audio_component_sync_audio_rate()
1190 		drm_dbg_kms(display->drm, "Not valid for port %c\n",  in intel_audio_component_sync_audio_rate()
1208 	mutex_unlock(&display->audio.mutex);  in intel_audio_component_sync_audio_rate()
1217 	struct intel_display *display = to_intel_display(kdev);  in intel_audio_component_get_eld()  local
1221 	mutex_lock(&display->audio.mutex);  in intel_audio_component_get_eld()
1223 	audio_state = find_audio_state(display, port, cpu_transcoder);  in intel_audio_component_get_eld()
1225 		drm_dbg_kms(display->drm, "Not valid for port %c\n",  in intel_audio_component_get_eld()
1227 		mutex_unlock(&display->audio.mutex);  in intel_audio_component_get_eld()
1239 	mutex_unlock(&display->audio.mutex);  in intel_audio_component_get_eld()
1256 	struct intel_display *display = to_intel_display(drv_kdev);  in intel_audio_component_bind()  local
1260 	if (drm_WARN_ON(display->drm, acomp->base.ops || acomp->base.dev))  in intel_audio_component_bind()
1263 	if (drm_WARN_ON(display->drm,  in intel_audio_component_bind()
1268 	drm_modeset_lock_all(display->drm);  in intel_audio_component_bind()
1274 	display->audio.component = acomp;  in intel_audio_component_bind()
1275 	drm_modeset_unlock_all(display->drm);  in intel_audio_component_bind()
1283 	struct intel_display *display = to_intel_display(drv_kdev);  in intel_audio_component_unbind()  local
1286 	drm_modeset_lock_all(display->drm);  in intel_audio_component_unbind()
1289 	display->audio.component = NULL;  in intel_audio_component_unbind()
1290 	drm_modeset_unlock_all(display->drm);  in intel_audio_component_unbind()
1294 	if (display->audio.power_refcount)  in intel_audio_component_unbind()
1295 		drm_err(display->drm,  in intel_audio_component_unbind()
1297 			display->audio.power_refcount);  in intel_audio_component_unbind()
1316  * @display: display device
1330 static void intel_audio_component_init(struct intel_display *display)  in intel_audio_component_init()  argument
1334 	if (DISPLAY_VER(display) >= 9) {  in intel_audio_component_init()
1335 		aud_freq_init = intel_de_read(display, AUD_FREQ_CNTRL);  in intel_audio_component_init()
1337 		if (DISPLAY_VER(display) >= 12)  in intel_audio_component_init()
1343 		if ((display->platform.tigerlake || display->platform.rocketlake) &&  in intel_audio_component_init()
1347 		drm_dbg_kms(display->drm,  in intel_audio_component_init()
1351 		display->audio.freq_cntrl = aud_freq;  in intel_audio_component_init()
1355 	intel_audio_cdclk_change_post(display);  in intel_audio_component_init()
1358 static void intel_audio_component_register(struct intel_display *display)  in intel_audio_component_register()  argument
1362 	ret = component_add_typed(display->drm->dev,  in intel_audio_component_register()
1366 		drm_err(display->drm,  in intel_audio_component_register()
1372 	display->audio.component_registered = true;  in intel_audio_component_register()
1377  * @display: display device
1382 static void intel_audio_component_cleanup(struct intel_display *display)  in intel_audio_component_cleanup()  argument
1384 	if (!display->audio.component_registered)  in intel_audio_component_cleanup()
1387 	component_del(display->drm->dev, &intel_audio_component_bind_ops);  in intel_audio_component_cleanup()
1388 	display->audio.component_registered = false;  in intel_audio_component_cleanup()
1394  * @display: display device
1397 void intel_audio_init(struct intel_display *display)  in intel_audio_init()  argument
1399 	if (intel_lpe_audio_init(display) < 0)  in intel_audio_init()
1400 		intel_audio_component_init(display);  in intel_audio_init()
1403 void intel_audio_register(struct intel_display *display)  in intel_audio_register()  argument
1405 	if (!display->audio.lpe.platdev)  in intel_audio_register()
1406 		intel_audio_component_register(display);  in intel_audio_register()
1411  * @display: display device
1413 void intel_audio_deinit(struct intel_display *display)  in intel_audio_deinit()  argument
1415 	if (display->audio.lpe.platdev)  in intel_audio_deinit()
1416 		intel_lpe_audio_teardown(display);  in intel_audio_deinit()
1418 		intel_audio_component_cleanup(display);  in intel_audio_deinit()