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| author | Takashi Iwai <tiwai@suse.de> | 2020-01-13 17:17:21 +0300 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2020-01-29 08:49:46 +0300 |
| commit | 742db30c4ee6cd28142e83e154b5271f95a2c67a (patch) | |
| tree | f0d6474ac46ba5b5ef5259d0e4abb21f4221cb68 /drivers/gpu/drm/nouveau/nouveau_drv.h | |
| parent | ee8642162a9edd40daafd3fb894e3fd3f909e361 (diff) | |
| download | linux-742db30c4ee6cd28142e83e154b5271f95a2c67a.tar.xz | |
drm/nouveau: Add HD-audio component notifier support
This patch adds the support for the notification of HD-audio hotplug
via the already existing drm_audio_component framework. This allows
us more reliable hotplug notification and ELD transfer without
accessing HD-audio bus; it's more efficient, and more importantly, it
works without waking up the runtime PM.
The implementation is rather simplistic: nouveau driver provides the
get_eld ops for HD-audio, and it notifies the audio hotplug via
pin_eld_notify callback upon each nv50_audio_enable() and _disable()
call. As the HD-audio pin assignment seems corresponding to the CRTC,
the crtc->index number is passed directly as the zero-based port
number.
The bind and unbind callbacks handle the device-link so that it
assures the PM call order.
Link: https://lore.kernel.org/r/20190722143815.7339-3-tiwai@suse.de
Reviewed-by: Lyude Paul <lyude@redhat.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_drv.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drv.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index da8c46e09943..c2c332fbde97 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -58,6 +58,8 @@ #include <drm/ttm/ttm_module.h> #include <drm/ttm/ttm_page_alloc.h> +#include <drm/drm_audio_component.h> + #include "uapi/drm/nouveau_drm.h" struct nouveau_channel; @@ -211,6 +213,11 @@ struct nouveau_drm { struct nouveau_svm *svm; struct nouveau_dmem *dmem; + + struct { + struct drm_audio_component *component; + bool component_registered; + } audio; }; static inline struct nouveau_drm * |