High pixel clocks are required to use a 40 TMDS divider instead of 10, and even low ones may optionally use scrambling depending on device support.
Signed-off-by: Ilia Mirkin imirkin@alum.mit.edu --- drivers/gpu/drm/nouveau/include/nvif/cl5070.h | 5 ++++- drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h | 1 + drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c | 10 ++++++++-- 3 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/include/nvif/cl5070.h b/drivers/gpu/drm/nouveau/include/nvif/cl5070.h index 7cdf53615d7b..bced81987269 100644 --- a/drivers/gpu/drm/nouveau/include/nvif/cl5070.h +++ b/drivers/gpu/drm/nouveau/include/nvif/cl5070.h @@ -69,7 +69,10 @@ struct nv50_disp_sor_hdmi_pwr_v0 { __u8 rekey; __u8 avi_infoframe_length; __u8 vendor_infoframe_length; - __u8 pad06[2]; +#define NV50_DISP_SOR_HDMI_PWR_V0_SCDC_SCRAMBLE (1 << 0) +#define NV50_DISP_SOR_HDMI_PWR_V0_SCDC_DIV_BY_4 (1 << 1) + __u8 scdc; + __u8 pad07[1]; };
struct nv50_disp_sor_lvds_script_v0 { diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h index e0b4e0c5704e..57ffadc6a38e 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h @@ -60,6 +60,7 @@ struct nvkm_ior_func { void (*ctrl)(struct nvkm_ior *, int head, bool enable, u8 max_ac_packet, u8 rekey, u8 *avi, u8 avi_size, u8 *vendor, u8 vendor_size); + void (*scdc)(struct nvkm_ior *, int head, u8 scdc); } hdmi;
struct { diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c index 3aa5a2879239..5f758948d6e1 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.c @@ -176,9 +176,10 @@ nv50_disp_root_mthd_(struct nvkm_object *object, u32 mthd, void *data, u32 size) nvif_ioctl(object, "disp sor hdmi ctrl size %d\n", size); if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { nvif_ioctl(object, "disp sor hdmi ctrl vers %d state %d " - "max_ac_packet %d rekey %d\n", + "max_ac_packet %d rekey %d scdc %d\n", args->v0.version, args->v0.state, - args->v0.max_ac_packet, args->v0.rekey); + args->v0.max_ac_packet, args->v0.rekey, + args->v0.scdc); if (args->v0.max_ac_packet > 0x1f || args->v0.rekey > 0x7f) return -EINVAL; if ((args->v0.avi_infoframe_length @@ -202,6 +203,11 @@ nv50_disp_root_mthd_(struct nvkm_object *object, u32 mthd, void *data, u32 size) args->v0.max_ac_packet, args->v0.rekey, avi, avi_size, vendor, vendor_size); + + if (outp->ior->func->hdmi.scdc) + outp->ior->func->hdmi.scdc( + outp->ior, hidx, args->v0.scdc); + return 0; } break;