diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2021-11-23 11:17:54 +0300 |
|---|---|---|
| committer | Karol Herbst <kherbst@redhat.com> | 2021-12-16 20:46:10 +0300 |
| commit | 3edcd504077c02c9e6e7b687a43849eacbb8088d (patch) | |
| tree | 26b2a51dd9e852892ff4a0febec74a2810226fac /drivers | |
| parent | b96a1d8c5189452d80551f2c38ef50c533c19669 (diff) | |
| download | linux-3edcd504077c02c9e6e7b687a43849eacbb8088d.tar.xz | |
drm/nouveau/disp/dp: add support for tps4
Required for HBR3 and LTTPR.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Link: https://gitlab.freedesktop.org/drm/nouveau/-/merge_requests/17
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c | 19 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm107.c | 1 |
3 files changed, 17 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 8b49398a91c5..565ee63c0f1d 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.c @@ -153,7 +153,7 @@ nvkm_dp_train_pattern(struct lt_state *lt, u8 pattern) nvkm_rdaux(dp->aux, DPCD_LC02, &sink_tp, 1); sink_tp &= ~DPCD_LC02_TRAINING_PATTERN_SET; - sink_tp |= pattern; + sink_tp |= (pattern != 4) ? pattern : 7; if (pattern != 0) sink_tp |= DPCD_LC02_SCRAMBLING_DISABLE; @@ -168,10 +168,17 @@ nvkm_dp_train_eq(struct lt_state *lt) bool eq_done = false, cr_done = true; int tries = 0, i; - if (lt->dp->dpcd[DPCD_RC02] & DPCD_RC02_TPS3_SUPPORTED) - nvkm_dp_train_pattern(lt, 3); - else - nvkm_dp_train_pattern(lt, 2); + { + if (lt->dp->dpcd[DPCD_RC00_DPCD_REV] >= 0x14 && + lt->dp->dpcd[DPCD_RC03] & DPCD_RC03_TPS4_SUPPORTED) + nvkm_dp_train_pattern(lt, 4); + else + if (lt->dp->dpcd[DPCD_RC00_DPCD_REV] >= 0x12 && + lt->dp->dpcd[DPCD_RC02] & DPCD_RC02_TPS3_SUPPORTED) + nvkm_dp_train_pattern(lt, 3); + else + nvkm_dp_train_pattern(lt, 2); + } do { if ((tries && @@ -245,6 +252,8 @@ nvkm_dp_train_links(struct nvkm_dp *dp) ior->dp.nr, ior->dp.bw * 27); /* Intersect misc. capabilities of the OR and sink. */ + if (disp->engine.subdev.device->chipset < 0x110) + dp->dpcd[DPCD_RC03] &= ~DPCD_RC03_TPS4_SUPPORTED; if (disp->engine.subdev.device->chipset < 0xd0) dp->dpcd[DPCD_RC02] &= ~DPCD_RC02_TPS3_SUPPORTED; lt.pc2 = dp->dpcd[DPCD_RC02] & DPCD_RC02_TPS3_SUPPORTED; diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.h b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.h index 8a8d0da58277..1becf9da3ed7 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.h +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/dp.h @@ -45,6 +45,7 @@ void nvkm_dp_disable(struct nvkm_outp *, struct nvkm_ior *); #define DPCD_RC02_TPS3_SUPPORTED 0x40 #define DPCD_RC02_MAX_LANE_COUNT 0x1f #define DPCD_RC03 0x00003 +#define DPCD_RC03_TPS4_SUPPORTED 0x80 #define DPCD_RC03_MAX_DOWNSPREAD 0x01 #define DPCD_RC0E_AUX_RD_INTERVAL 0x0000e @@ -54,7 +55,7 @@ void nvkm_dp_disable(struct nvkm_outp *, struct nvkm_ior *); #define DPCD_LC01_ENHANCED_FRAME_EN 0x80 #define DPCD_LC01_LANE_COUNT_SET 0x1f #define DPCD_LC02 0x00102 -#define DPCD_LC02_TRAINING_PATTERN_SET 0x03 +#define DPCD_LC02_TRAINING_PATTERN_SET 0x0f #define DPCD_LC02_SCRAMBLING_DISABLE 0x20 #define DPCD_LC03(l) ((l) + 0x00103) #define DPCD_LC03_MAX_PRE_EMPHASIS_REACHED 0x20 diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm107.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm107.c index 5aa7138f3472..3696bfd3bfd7 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm107.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm107.c @@ -35,6 +35,7 @@ gm107_sor_dp_pattern(struct nvkm_ior *sor, int pattern) case 1: data = 0x01010101; break; case 2: data = 0x02020202; break; case 3: data = 0x03030303; break; + case 4: data = 0x1b1b1b1b; break; default: WARN_ON(1); return; |