search for: nv50_outp_dump_cap

Not entirely sure why this never came up when I originally tested this (maybe some BIOSes already have this setup?) but the ->caps_init vfunc appears to cause the display engine to throw an exception on driver init, at least on my ThinkPad P72: nouveau 0000:01:00.0: disp: chid 0 mthd 008c data 00000000 0000508c 0000102b This is magic nvidia speak for "You need to have the DMA notifier

These didn't apply cleanly to v5.8, so here's a backported version. Lyude Paul (2): drm/nouveau/kms/nv50-: Program notifier offset before requesting disp caps drm/nouveau/kms/nv50-: Log SOR/PIOR caps drivers/gpu/drm/nouveau/dispnv50/core507d.c | 25 ++++++++++++++++----- drivers/gpu/drm/nouveau/dispnv50/disp.c | 10 +++++++++ 2 files changed, 29 insertions(+), 6 deletions(-)

Not entirely sure why this never came up when I originally tested this (maybe some BIOSes already have this setup?) but the ->caps_init vfunc appears to cause the display engine to throw an exception on driver init, at least on my ThinkPad P72: nouveau 0000:01:00.0: disp: chid 0 mthd 008c data 00000000 0000508c 0000102b This is magic nvidia speak for "You need to have the DMA notifier

Signed-off-by: Lyude Paul <lyude at redhat.com> --- drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c index 6094805fbd63..06b19883a06b 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outp.c +++

..., struct dcb_output *dcbe) drm_connector_attach_encoder(connector, encoder); - disp->core->func->sor->get_caps(disp, nv_encoder, ffs(dcbe->or) - 1); + nv_encoder->or = ffs(dcbe->or) - 1; + disp->core->func->sor->get_caps(disp, nv_encoder, nv_encoder->or); nv50_outp_dump_caps(drm, nv_encoder); if (dcbe->type == DCB_OUTPUT_DP) { @@ -2473,6 +2474,103 @@ nv50_display_fini(struct drm_device *dev, bool runtime, bool suspend) cancel_work_sync(&drm->hpd_work); } +static inline void +nv50_display_read_hw_or_state(struct drm_device *dev, struct nv50_disp *di...