Good catch! The OR is definitely a far better choice than the head here, as it's what we use to select the GPU-side HDA registers too.

Merged.

On Thu, 16 Apr 2020 at 17:54, Takashi Iwai tiwai@suse.de wrote:

Since the commit 742db30c4ee6 ("drm/nouveau: Add HD-audio component notifier support"), the nouveau driver notifies and pokes the HD-audio HPD and ELD via audio component, but this seems broken. The culprit is the naive assumption that crtc->index corresponds to the HDA pin. Actually this rather corresponds to the MST dev_id (alias "pipe" in the audio component framework) while the actual port number is given from the output ior id number.

This patch corrects the assignment of port and dev_id arguments in the audio component ops to recover from the HDMI/DP audio regression.

Fixes: 742db30c4ee6 ("drm/nouveau: Add HD-audio component notifier support") BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207223 Cc: stable@vger.kernel.org Signed-off-by: Takashi Iwai tiwai@suse.de

---

drivers/gpu/drm/nouveau/dispnv50/disp.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index a3dc2ba19fb2..3a9fd565079d 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -481,15 +481,16 @@ nv50_dac_create(struct drm_connector *connector, struct dcb_output *dcbe)

• audio component binding for ELD notification

*/ static void -nv50_audio_component_eld_notify(struct drm_audio_component *acomp, int port) +nv50_audio_component_eld_notify(struct drm_audio_component *acomp, int port,

•                           int dev_id)
  

{ if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify) acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,

•                                            port, -1);
  

•                                            port, dev_id);
  

}

static int -nv50_audio_component_get_eld(struct device *kdev, int port, int pipe, +nv50_audio_component_get_eld(struct device *kdev, int port, int dev_id, bool *enabled, unsigned char *buf, int max_bytes) { struct drm_device *drm_dev = dev_get_drvdata(kdev); @@ -505,7 +506,8 @@ nv50_audio_component_get_eld(struct device *kdev, int port, int pipe, nv_encoder = nouveau_encoder(encoder); nv_connector = nouveau_encoder_connector_get(nv_encoder); nv_crtc = nouveau_crtc(encoder->crtc);

•           if (!nv_connector || !nv_crtc || nv_crtc->index != port)
  

•           if (!nv_connector || !nv_crtc || nv_encoder->or != port ||
  

•               nv_crtc->index != dev_id)
                    continue;
            *enabled = drm_detect_monitor_audio(nv_connector->edid);
            if (*enabled) {
  

@@ -599,7 +601,8 @@ nv50_audio_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc)

    nvif_mthd(&disp->disp->object, 0, &args, sizeof(args));

•   nv50_audio_component_eld_notify(drm->audio.component, nv_crtc->index);
  

•   nv50_audio_component_eld_notify(drm->audio.component, nv_encoder->or,
  

•                                   nv_crtc->index);
  

}

static void @@ -633,7 +636,8 @@ nv50_audio_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) nvif_mthd(&disp->disp->object, 0, &args, sizeof(args.base) + drm_eld_size(args.data));

•   nv50_audio_component_eld_notify(drm->audio.component, nv_crtc->index);
  

•   nv50_audio_component_eld_notify(drm->audio.component, nv_encoder->or,
  

•                                   nv_crtc->index);
  

}

/******************************************************************************

2.16.4

---

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