diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2010-01-17 23:52:35 +0100 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-01-18 00:56:27 +0100 |
| commit | 58d65b84dee524b0a4a8b747b8eb8bbf2fb16d9d (patch) | |
| tree | de9c4ef82d3c1a51d3fc0267b499e3dfcb02528a /drivers/gpu | |
| parent | drm/nv50: fix alignment of per-channel fifo cache (diff) | |
| download | linux-58d65b84dee524b0a4a8b747b8eb8bbf2fb16d9d.tar.xz linux-58d65b84dee524b0a4a8b747b8eb8bbf2fb16d9d.zip | |
drm/nv50: prevent accidently turning off encoders we're actually using
On most cards the DisplayPort connector is created with 2 encoders sharing
a single SOR (for native DP, and for DVI-over-DP). The previous logic
for turning off unused encoders didn't take into account that we could
have multiple drm_encoders on a single hw encoder and ended up turning off
encoders that were actually being used still.
This patch fixes that issue. We probably want to look at something a bit
better later on, and only expose one drm_encoder per hw encoder block.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_crtc.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_crtc.c b/drivers/gpu/drm/nouveau/nv50_crtc.c index 118d3285fd8c..40b7360841f8 100644 --- a/drivers/gpu/drm/nouveau/nv50_crtc.c +++ b/drivers/gpu/drm/nouveau/nv50_crtc.c @@ -432,6 +432,7 @@ nv50_crtc_prepare(struct drm_crtc *crtc) struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); struct drm_device *dev = crtc->dev; struct drm_encoder *encoder; + uint32_t dac = 0, sor = 0; NV_DEBUG_KMS(dev, "index %d\n", nv_crtc->index); @@ -439,9 +440,28 @@ nv50_crtc_prepare(struct drm_crtc *crtc) list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - if (drm_helper_encoder_in_use(encoder)) + if (!drm_helper_encoder_in_use(encoder)) continue; + if (nv_encoder->dcb->type == OUTPUT_ANALOG || + nv_encoder->dcb->type == OUTPUT_TV) + dac |= (1 << nv_encoder->or); + else + sor |= (1 << nv_encoder->or); + } + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + + if (nv_encoder->dcb->type == OUTPUT_ANALOG || + nv_encoder->dcb->type == OUTPUT_TV) { + if (dac & (1 << nv_encoder->or)) + continue; + } else { + if (sor & (1 << nv_encoder->or)) + continue; + } + nv_encoder->disconnect(nv_encoder); } |