diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c index 3800aeb507d0..55fbfe28c6dc 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c @@ -33,6 +33,12 @@ #include <nvif/event.h> +/* IED scripts are no longer used by UEFI/RM from Ampere, but have been updated for + * the x86 option ROM. However, the relevant VBIOS table versions weren't modified, + * so we're unable to detect this in a nice way. + */ +#define AMPERE_IED_HACK(disp) ((disp)->engine.subdev.device->card_type >= GA100) + struct lt_state { struct nvkm_dp *dp; u8 stat[6]; @@ -238,6 +244,19 @@ nvkm_dp_train_links(struct nvkm_dp *dp) dp->dpcd[DPCD_RC02] &= ~DPCD_RC02_TPS3_SUPPORTED; lt.pc2 = dp->dpcd[DPCD_RC02] & DPCD_RC02_TPS3_SUPPORTED; + if (AMPERE_IED_HACK(disp) && (lnkcmp = lt.dp->info.script[0])) { + /* Execute BeforeLinkTraining script from DP Info table. */ + while (ior->dp.bw < nvbios_rd08(bios, lnkcmp)) + lnkcmp += 3; + lnkcmp = nvbios_rd16(bios, lnkcmp + 1); + + nvbios_init(&dp->outp.disp->engine.subdev, lnkcmp, + init.outp = &dp->outp.info; + init.or = ior->id; + init.link = ior->asy.link; + ); + } + /* Set desired link configuration on the source. */ if ((lnkcmp = lt.dp->info.lnkcmp)) { if (dp->version < 0x30) { @@ -316,12 +335,14 @@ nvkm_dp_train_init(struct nvkm_dp *dp) ); } - /* Execute BeforeLinkTraining script from DP Info table. */ - nvbios_init(&dp->outp.disp->engine.subdev, dp->info.script[0], - init.outp = &dp->outp.info; - init.or = dp->outp.ior->id; - init.link = dp->outp.ior->asy.link; - ); + if (!AMPERE_IED_HACK(dp->outp.disp)) { + /* Execute BeforeLinkTraining script from DP Info table. */ + nvbios_init(&dp->outp.disp->engine.subdev, dp->info.script[0], + init.outp = &dp->outp.info; + init.or = dp->outp.ior->id; + init.link = dp->outp.ior->asy.link; + ); + } } static const struct dp_rates { |