linux-kernel - [PATCH v3 25/44] drm/nouveau/disp: add hdmi audio hal function

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Date:   Tue, 19 Sep 2023 17:56:20 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org
Cc:     Ben Skeggs <bskeggs@...hat.com>, Danilo Krummrich <me@...r.org>,
        Karol Herbst <kherbst@...hat.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 25/44] drm/nouveau/disp: add hdmi audio hal function

From: Ben Skeggs <bskeggs@...hat.com>

This just adds a hook for RM to use, HW paths remain untouched, but
should probably be cleaned up to use this too at some point.

Signed-off-by: Ben Skeggs <bskeggs@...hat.com>
Reviewed-by: Lyude Paul <lyude@...hat.com>
Acked-by: Danilo Krummrich <me@...r.org>
Signed-off-by: Lyude Paul <lyude@...hat.com>
---
 drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h   |  1 +
 drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h
index 6e750890bcc93..8686e5c044a5d 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h
@@ -74,6 +74,7 @@ struct nvkm_ior_func {
 			     bool scrambling_low_rates);
 		void (*infoframe_avi)(struct nvkm_ior *, int head, void *data, u32 size);
 		void (*infoframe_vsi)(struct nvkm_ior *, int head, void *data, u32 size);
+		void (*audio)(struct nvkm_ior *, int head, bool enable);
 	} *hdmi;
 
 	const struct nvkm_ior_func_dp {
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
index ad75dc5c50cf7..7574f22006441 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
@@ -99,12 +99,20 @@ nvkm_uoutp_mthd_hda_eld(struct nvkm_outp *outp, void *argv, u32 argc)
 	if (argc && args->v0.data[0]) {
 		if (outp->info.type == DCB_OUTPUT_DP)
 			ior->func->dp->audio(ior, args->v0.head, true);
+		else
+		if (ior->func->hdmi->audio)
+			ior->func->hdmi->audio(ior, args->v0.head, true);
+
 		ior->func->hda->hpd(ior, args->v0.head, true);
 		ior->func->hda->eld(ior, args->v0.head, args->v0.data, argc);
 	} else {
+		ior->func->hda->hpd(ior, args->v0.head, false);
+
 		if (outp->info.type == DCB_OUTPUT_DP)
 			ior->func->dp->audio(ior, args->v0.head, false);
-		ior->func->hda->hpd(ior, args->v0.head, false);
+		else
+		if (ior->func->hdmi->audio)
+			ior->func->hdmi->audio(ior, args->v0.head, false);
 	}
 
 	return 0;
-- 
2.41.0