drm/nouveau/disp: add method to trigger DP link retrain

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This moves control of link retraining in response to HPD IRQ to the
KMS driver's HPD IRQ handler.

NVKM still handles checking link status for the moment, this can be
moved to the KMS driver when it takes explicit control of link rate
selection.

v2:
- skip source config on retrain (fixes some retrain failures)

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

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This commit is contained in:

Ben Skeggs 2022-06-01 20:46:35 +10:00

parent 016dacb60e

commit 8bb30c8823

8 changed files with 124 additions and 62 deletions

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6

drivers/gpu/drm/nouveau/include/nvif/if0012.h

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1

drivers/gpu/drm/nouveau/include/nvif/outp.h

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6

drivers/gpu/drm/nouveau/nouveau_display.c

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11

drivers/gpu/drm/nouveau/nouveau_dp.c

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1

drivers/gpu/drm/nouveau/nouveau_encoder.h

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8

drivers/gpu/drm/nouveau/nvif/outp.c

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138

drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c

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15

drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c

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