linux-kernel - [PATCH v3 20/44] drm/nouveau/disp: move hdmi disable out of release()

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Message-ID: <20230919220442.202488-21-lyude@redhat.com>
Date:   Tue, 19 Sep 2023 17:56:15 -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>, Wayne Lin <Wayne.Lin@....com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 20/44] drm/nouveau/disp: move hdmi disable out of release()

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

- release() is being moved post-modeset, preserve hdmi behaviour for now

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/dispnv50/disp.c          |  8 ++++++++
 drivers/gpu/drm/nouveau/nouveau_encoder.h        |  6 +++++-
 drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c | 15 +++++++--------
 3 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 7a7b3464a6671..ab048cf25d866 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -842,6 +842,8 @@ nv50_hdmi_enable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc,
 		size = 0;
 
 	nvif_outp_infoframe(&nv_encoder->outp, NVIF_OUTP_INFOFRAME_V0_VSI, &args.infoframe, size);
+
+	nv_encoder->hdmi.enabled = true;
 }
 
 /******************************************************************************
@@ -1562,6 +1564,12 @@ nv50_sor_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *st
 	}
 #endif
 
+	if (nv_encoder->dcb->type == DCB_OUTPUT_TMDS && nv_encoder->hdmi.enabled) {
+		nvif_outp_hdmi(&nv_encoder->outp, nv_crtc->index,
+			       false, 0, 0, 0, false, false, false);
+		nv_encoder->hdmi.enabled = false;
+	}
+
 	if (nv_encoder->dcb->type == DCB_OUTPUT_DP) {
 		ret = drm_dp_dpcd_readb(aux, DP_SET_POWER, &pwr);
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
index ea8ef10e71aae..b3a9415ba879c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_encoder.h
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -69,7 +69,11 @@ struct nouveau_encoder {
 
 	struct nv04_output_reg restore;
 
-	union {
+	struct {
+		struct {
+			bool enabled;
+		} hdmi;
+
 		struct {
 			struct nv50_mstm *mstm;
 			int link_nr;
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
index 8ba96323e1de5..ffd174091454f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c
@@ -154,6 +154,13 @@ nvkm_uoutp_mthd_hdmi(struct nvkm_outp *outp, void *argv, u32 argc)
 	    (args->v0.scdc && !ior->func->hdmi->scdc))
 		return -EINVAL;
 
+	if (!args->v0.enable) {
+		ior->func->hdmi->infoframe_avi(ior, args->v0.head, NULL, 0);
+		ior->func->hdmi->infoframe_vsi(ior, args->v0.head, NULL, 0);
+		ior->func->hdmi->ctrl(ior, args->v0.head, false, 0, 0);
+		return 0;
+	}
+
 	ior->func->hdmi->ctrl(ior, args->v0.head, args->v0.enable,
 			      args->v0.max_ac_packet, args->v0.rekey);
 	if (ior->func->hdmi->scdc)
@@ -177,19 +184,11 @@ nvkm_uoutp_mthd_acquire_lvds(struct nvkm_outp *outp, bool dual, bool bpc8)
 static int
 nvkm_uoutp_mthd_release(struct nvkm_outp *outp, void *argv, u32 argc)
 {
-	struct nvkm_head *head = outp->asy.head;
-	struct nvkm_ior *ior = outp->ior;
 	union nvif_outp_release_args *args = argv;
 
 	if (argc != sizeof(args->vn))
 		return -ENOSYS;
 
-	if (ior->func->hdmi && head) {
-		ior->func->hdmi->infoframe_avi(ior, head->id, NULL, 0);
-		ior->func->hdmi->infoframe_vsi(ior, head->id, NULL, 0);
-		ior->func->hdmi->ctrl(ior, head->id, false, 0, 0);
-	}
-
 	nvkm_outp_release(outp);
 	return 0;
 }
-- 
2.41.0