diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_display.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_display.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 34156b6..580a5d1 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -784,6 +784,37 @@ ack: } static void +nv50_display_unk20_dp_hack(struct drm_device *dev, struct dcb_entry *dcb) +{ + int or = ffs(dcb->or) - 1, link = !(dcb->dpconf.sor.link & 1); + struct drm_encoder *encoder; + uint32_t tmp, unk0 = 0, unk1 = 0; + + if (dcb->type != OUTPUT_DP) + return; + + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); + + if (nv_encoder->dcb == dcb) { + unk0 = nv_encoder->dp.unk0; + unk1 = nv_encoder->dp.unk1; + break; + } + } + + if (unk0 || unk1) { + tmp = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)); + tmp &= 0xfffffe03; + nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), tmp | unk0); + + tmp = nv_rd32(dev, NV50_SOR_DP_UNK128(or, link)); + tmp &= 0xfef080c0; + nv_wr32(dev, NV50_SOR_DP_UNK128(or, link), tmp | unk1); + } +} + +static void nv50_display_unk20_handler(struct drm_device *dev) { struct dcb_entry *dcbent; @@ -806,6 +837,8 @@ nv50_display_unk20_handler(struct drm_device *dev) nouveau_bios_run_display_table(dev, dcbent, script, pclk); + nv50_display_unk20_dp_hack(dev, dcbent); + tmp = nv_rd32(dev, NV50_PDISPLAY_CRTC_CLK_CTRL2(head)); tmp &= ~0x000000f; nv_wr32(dev, NV50_PDISPLAY_CRTC_CLK_CTRL2(head), tmp); |
