search for: drm_dp_dpcd_write

...splay.c b/drm/nouveau/nv50_display.c index dd8d4352..9e360ffa 100644 --- a/drm/nouveau/nv50_display.c +++ b/drm/nouveau/nv50_display.c @@ -3337,9 +3337,6 @@ nv50_mstm_service(struct nv50_mstm *mstm) } drm_dp_mst_hpd_irq(&mstm->mgr, esi, &handled); - if (!handled) - break; - drm_dp_dpcd_write(aux, DP_SINK_COUNT_ESI + 1, &esi[1], 3); } } -- 2.14.3

Here's some fixes for the less important DP AUX issues I mentioned a while back. Lyude Paul (2): drm/dp: Add ->pre/post_transfer() hooks for drm_dp_aux drm/nouveau: Grab an rpm reference before/after DP AUX transactions drivers/gpu/drm/drm_dp_helper.c | 5 ++ drivers/gpu/drm/nouveau/nouveau_connector.c | 36 ++++++++ drivers/gpu/drm/nouveau/nouveau_drm.c | 12 ++-

...d failed\n"); > return false; > } > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h > index 0c141fc81aaa8..11649e93e5bb6 100644 > --- a/include/drm/drm_dp_helper.h > +++ b/include/drm/drm_dp_helper.h > @@ -1607,6 +1607,9 @@ static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux, > return drm_dp_dpcd_write(aux, offset, &value, 1); > } > > +int drm_dp_read_dpcd_caps(struct drm_dp_aux *aux, > + u8 dpcd[DP_RECEIVER_CAP_SIZE]); > + > int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux, > u8 status[DP_LINK_...

...me+0x19c/0x850 [ 246.725128] ? finish_wait+0x90/0x90 [ 246.725990] __pm_runtime_resume+0x4e/0x90 [ 246.726876] nvkm_i2c_aux_acquire+0x39/0xc0 [nouveau] [ 246.727713] nouveau_connector_aux_xfer+0x5c/0xd0 [nouveau] [ 246.728546] drm_dp_dpcd_access+0x77/0x110 [drm_kms_helper] [ 246.729349] drm_dp_dpcd_write+0x2b/0xb0 [drm_kms_helper] [ 246.730085] drm_dp_mst_topology_mgr_suspend+0x4e/0x90 [drm_kms_helper] [ 246.730828] nv50_display_fini+0xa5/0xc0 [nouveau] [ 246.731606] nouveau_display_fini+0xc8/0x100 [nouveau] [ 246.732375] nouveau_display_suspend+0x62/0x110 [nouveau] [ 246.733106] nouveau_...

...DRM_ERROR("LSPCON DPCD read failed\n"); return false; } diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 0c141fc81aaa8..11649e93e5bb6 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -1607,6 +1607,9 @@ static inline ssize_t drm_dp_dpcd_writeb(struct drm_dp_aux *aux, return drm_dp_dpcd_write(aux, offset, &value, 1); } +int drm_dp_read_dpcd_caps(struct drm_dp_aux *aux, + u8 dpcd[DP_RECEIVER_CAP_SIZE]); + int drm_dp_dpcd_read_link_status(struct drm_dp_aux *aux, u8 status[DP_LINK_STATUS_SIZE]); -- 2.26.2

[cc += linux-pm] Hi Lyude, First of all, thanks a lot for looking into this. On Mon, Jul 16, 2018 at 07:59:25PM -0400, Lyude Paul wrote: > In order to fix all of the spots that need to have runtime PM get/puts() > added, we need to ensure that it's possible for us to call > pm_runtime_get/put() in any context, regardless of how deep, since > almost all of the spots that are

This series is intended to add support for shutting down the GPU on kernel shutdown/reboot using the ->shutdown() hook, similar to what amdgpu does. This is mainly intended to workaround a bios issue on the P50 that was preventing nouveau from initializing the dedicated GM107 GPU on that system properly. You can find more details on this issue in the patch labeled "Shut down GPU on kernel

To start off: this patch series is less work to review then it looks - most (but not all) of the nouveau related work has already been reviewed elsewhere. Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM

Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM related and MST related fixes, we're missing a lot of nice things that have been added to DRM since this was originally written. Additionally, the code

To start off: this patch series is less work to review then it looks - most (but not all) of the nouveau related work has already been reviewed elsewhere. Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM

Most of the reason I'm asking for an RFC here is because this code pulls a lot of code out of i915 and into shared DP helpers. Anyway-nouveau's HPD related code has been collecting dust for a while. Other then the occasional runtime PM related and MST related fixes, we're missing a lot of nice things that have been added to DRM since this was originally written. Additionally, the code