Re: [PATCH 0/3] drm/amd/display/dc/dce: remove some not used variables

2019-10-28 Thread Li, Sun peng (Leo)
Hi Zheng, Harry's previous comment about the superfluous REG_READ()s is still unaddressed. Once that's fixed, I can give my r-b. Thanks, Leo On 2019-10-28 5:32 a.m., zhengbin (A) wrote: > ping > > On 2019/10/9 14:25, zhengbin wrote: >> zhengbin (3): >> drm/amd/display: Remove set but not use

Re: [PATCH v2] drm/amdgpu: Add DC feature mask to disable fractional pwm

2019-10-23 Thread Li, Sun peng (Leo)
On 2019-10-23 10:19 a.m., Lukáš Krejčí wrote: > On Mon, 2019-10-21 at 15:44 -0400, sunpeng...@amd.com wrote: >> From: Leo Li >> >> [Why] >> >> Some LED panel drivers might not like fractional PWM. In such cases, >> backlight flickering may be observed. >> >> [How] >> >> Add a DC feature mask to di

Re: [PATCH] drm/amdgpu/display: fix compile error

2019-10-17 Thread Li, Sun peng (Leo)
This has already been fixed here: https://patchwork.freedesktop.org/patch/336195/ Should be mirrored on Alex's tree soon. Thanks, Leo On 2019-10-17 2:19 a.m., Chen Wandun wrote: > From: Chenwandun > > drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_resource.c:1913:48: > error: struct dc_

Re: [RFC PATCH RESEND] drm/amd/display: Add back missing backlight level rounding

2019-10-17 Thread Li, Sun peng (Leo)
Thanks for the detailed notes! See reply inline. On 2019-10-15 4:03 p.m., Lukáš Krejčí wrote: > [Why] > Having the rounding of the backlight value restored to the way it was > seemingly gets rid of backlight flickering on certain Stoney Ridge > laptops. > > [How] > Rescale the backlight level bet

Re: [PATCH v2 09/14] drm/dp-mst: Export symbols for dpcd read/write

2019-08-20 Thread Li, Sun peng (Leo)
On 2019-08-20 5:02 p.m., Lyude Paul wrote: > [Added Leo Li here, since they did the auxdev work that introduced these > functions] > > Since it seems we'll actually be doing remote DPCD read/writes in DRM drivers > and not just from auxdev, maybe we should combine drm_dp_dpcd_read() with > drm_

Re: [Intel-gfx] [RFC][PATCH 0/2] drm: PATH prop for all connectors?

2019-08-01 Thread Li, Sun peng (Leo)
On 2019-08-01 5:51 a.m., Pekka Paalanen wrote: > On Tue, 16 Jul 2019 14:59:58 + > "Li, Sun peng (Leo)" wrote: > >> On 2019-07-11 3:29 a.m., Pekka Paalanen wrote: >>> Wait, one can write udev rules for connectors and stuff? >>> How? What can they

Re: [PATCH 5/7] drm/amd/display: Use proper enum conversion functions

2019-07-25 Thread Li, Sun peng (Leo)
On 2019-07-25 12:14 p.m., Kazlauskas, Nicholas wrote: > On 7/25/19 12:00 PM, Li, Sun peng (Leo) wrote: >> >> >> On 2019-07-18 11:16 p.m., Nathan Chancellor wrote: >>> On Wed, Jul 03, 2019 at 10:52:16PM -0700, Nathan Chancellor wrote: >>>> clang w

Re: [PATCH 5/7] drm/amd/display: Use proper enum conversion functions

2019-07-25 Thread Li, Sun peng (Leo)
On 2019-07-18 11:16 p.m., Nathan Chancellor wrote: > On Wed, Jul 03, 2019 at 10:52:16PM -0700, Nathan Chancellor wrote: >> clang warns: >> >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_pp_smu.c:336:8: >> warning: implicit conversion from enumeration type 'enum smu_clk_type' >> to d

Re: [PATCH 9/9] drm/amd/display: Implement MST Aux device registration

2019-07-24 Thread Li, Sun peng (Leo)
On 2019-07-24 4:05 p.m., Kazlauskas, Nicholas wrote: > On 7/23/19 7:28 PM, sunpeng...@amd.com wrote: >> From: Leo Li >> >> Implement late_register and early_unregister hooks for MST connectors. >> Call drm helpers for MST connector registration, which registers the >> AUX devices. >> >> Cc: Jerr

Re: [PATCH 07/10] drm/i915: Implement MST Aux device registration

2019-07-23 Thread Li, Sun peng (Leo)
On 2019-07-12 4:15 p.m., Ville Syrjälä wrote: > On Fri, Jul 12, 2019 at 11:05:59PM +0300, Ville Syrjälä wrote: >> On Fri, Jul 12, 2019 at 03:48:53PM -0400, Lyude Paul wrote: >>> BTW, I just tried these patches on my T450s (using i915) and I'm seeing some >>> kernel warnings with them when adding

Re: [PATCH v2] drm/sysfs: Add mstpath attribute to connector devices

2019-07-16 Thread Li, Sun peng (Leo)
On 2019-07-10 6:50 p.m., Lyude Paul wrote: > gah. So, I was originally going to ask "why didn't we add the connector name > into this?", but then I realized we're doing the right thing already and just > doing card%d-%s % (card_number, path_prop). Which means we probably really > don't > want t

Re: [Intel-gfx] [RFC][PATCH 0/2] drm: PATH prop for all connectors?

2019-07-16 Thread Li, Sun peng (Leo)
On 2019-07-11 3:29 a.m., Pekka Paalanen wrote: > Wait, one can write udev rules for connectors and stuff? > How? What can they do? I was using it to generate user-friendly device names for the mst aux implementation: https://patchwork.freedesktop.org/patch/315900/?series=63237&rev=2 Leo ___

Re: [PATCH 00/10] Enable MST Aux devices (v2)

2019-07-09 Thread Li, Sun peng (Leo)
Hi Lyude, sorry - just realized I forgot to CC you on this series! Let me know if I should resend them. Adding some additional reviewers as well. Thanks, Leo On 2019-07-04 3:05 p.m., sunpeng...@amd.com wrote: > From: Leo Li > > Hi all, > > Here's the second revision of patches to enable mst

Re: [PATCH 03/10] drm/sysfs: Add mstpath attribute to connector devices

2019-07-05 Thread Li, Sun peng (Leo)
On 2019-07-04 3:33 p.m., Ville Syrjälä wrote: > On Thu, Jul 04, 2019 at 03:05:12PM -0400, sunpeng...@amd.com wrote: >> From: Leo Li >> >> This can be used to create more descriptive symlinks for MST aux >> devices. Consider the following udev rule: >> >> SUBSYSTEM=="drm_dp_aux_dev", SUBSYSTEMS=

Re: [PATCH 2/7] drm/dp_mst: Register AUX devices for MST ports

2019-06-27 Thread Li, Sun peng (Leo)
Sorry for the late response! just jumping back on this now. On 2019-05-16 5:40 p.m., Lyude Paul wrote: > [CAUTION: External Email] > > So a couple of things: > > On Thu, 2019-05-16 at 11:17 -0400, sunpeng...@amd.com wrote: >> From: Ville Syrjälä >> >> All available downstream ports - physical

Re: [PATCH 2/7] drm/dp_mst: Register AUX devices for MST ports

2019-06-06 Thread Li, Sun peng (Leo)
On 2019-06-03 3:28 p.m., Lyude Paul wrote: >> I'm reproducing this just by reloading i915 on a machine with some MST >> displays connected. I uploaded a copy of the script that I use to do this >> here: >> >> https://people.freedesktop.org/~lyudess/archive/06-03-2019/unloadgpumod.sh > oops-almost

Re: [PATCH 2/7] drm/dp_mst: Register AUX devices for MST ports

2019-05-30 Thread Li, Sun peng (Leo)
Hey, sorry for my late response! On 2019-05-16 5:40 p.m., Lyude Paul wrote: >>if (old_pdt != port->pdt && !port->input) { >> @@ -1220,6 +1268,8 @@ static void drm_dp_add_port(struct drm_dp_mst_branch >> *mstb, >>drm_connector_set_tile_property(port->connector); >>

Re: [PATCH 0/7] Add DP MST AUX devices

2019-05-16 Thread Li, Sun peng (Leo)
On 2019-05-16 3:54 p.m., Lyude Paul wrote: > [CAUTION: External Email] > > Hi, could we (and for future versions of this series and others) get a respin > of this that's actually rebased against drm-tip? That is the defacto standard > branch to do development on, and otherwise anyone trying to t

Re: [PATCH 2/3] drm/dp_mst: Expose build_mst_prop_path()

2019-04-24 Thread Li, Sun peng (Leo)
On 2019-04-24 1:26 p.m., Lyude Paul wrote: > Closer, but are we sure we want to use the MST prop path for this? Why not add > a sysfs attribute with the corresponding DRM connector name instead since the > connector itself will have a path property. That way we can associate aux > devices for eD

Re: [PATCH 1/2] drm/dp_aux: Use non-cyclic idr, add suffix option for aux device

2019-04-17 Thread Li, Sun peng (Leo)
On 2019-04-16 6:16 p.m., Lyude Paul wrote: > Sorry for the slow response, I've been really busy ;_; No worries :) > > On Fri, 2019-04-12 at 12:05 -0400, sunpeng...@amd.com wrote: >> From: Leo Li >> >> In preparation for adding aux devices for DP MST: >> >> 1. A non-cyclic idr is used for the

Re: [RFC 0/2] Add AUX device entries for DP MST devices

2019-04-16 Thread Li, Sun peng (Leo)
>> Hmm. My MST-foo is admittedly weak so I'm not sure. A quick trawl through >> the spec didn't provide any solid explanations either :( However eg. >> "Figure 2-83: Example Multi-function MST Branch-Sink Device Enumeration" >> in the DP 1.4 spec does appear to show kind of virtual DPCD thing behin

Re: [RFC 0/2] Add AUX device entries for DP MST devices

2019-04-15 Thread Li, Sun peng (Leo)
On 2019-04-12 1:30 p.m., Ville Syrjälä wrote: > On Fri, Apr 12, 2019 at 12:05:29PM -0400, sunpeng...@amd.com wrote: >> From: Leo Li >> >> Hi all, >> >> This is a follup to this change made by Ville to add MST aux nodes: >> https://github.com/vsyrjala/linux/commit/cac63f799ee2f5fbbe4f0a375383f13

Re: [PATCH] drm/amd/display: Fix reference counting for struct dc_sink.

2019-02-21 Thread Li, Sun peng (Leo)
On 2019-02-20 12:24 a.m., Mathias Fröhlich wrote: > Hi, > > ping? > ... to the dc folks? > > best > Mathias Hi Mathias, Sorry for the wait, change looks good to me. Reviewed-by: Leo Li ...and merged. Thanks for cleaning this up. Leo > > On Wednesday, 13 February 2019 21:38:03 CET Alex D

Re: [PATCH][drm-next] drm/amd/display: fix dereference of pointer fs_params before it is null checked

2018-11-20 Thread Li, Sun peng (Leo)
On 2018-11-20 12:17 p.m., Colin King wrote: > From: Colin Ian King > > Currently there are several instances of pointer fs_params being > dereferenced before fs_params is being null checked. Fix this by > only dereferencing fs_params after the null check. > > Detected by CoverityScan, CID#147

Re: [PATCH 2/2] drm/atomic: Create and use __drm_atomic_helper_crtc_reset() everywhere

2018-11-12 Thread Li, Sun peng (Leo)
On 2018-11-12 10:01 AM, Maarten Lankhorst wrote: > We already have __drm_atomic_helper_connector_reset() and > __drm_atomic_helper_plane_reset(), extend this to crtc as well. > > Most drivers already have a gpu reset hook, correct it. > Nouveau already implemented its own __drm_atomic_helper_crt

Re: [PATCH] drm/amd/display: Fix misleading buffer information

2018-11-05 Thread Li, Sun peng (Leo)
+amdgfx, amdgpu specific patches should go here On 2018-11-05 05:33 AM, Shaokun Zhang wrote: > RETIMER_REDRIVER_INFO shows the buffer as a decimal value with a '0x' > prefix, which is somewhat misleading. > > Fix it to print hexadecimal, as was intended. > > Fixes: 2f14bc89("drm/amd/display: add

Re: [PATCH v2] drm: Get ref on CRTC commit object when waiting for flip_done

2018-10-16 Thread Li, Sun peng (Leo)
On 2018-10-16 08:33 AM, Daniel Vetter wrote: > On Mon, Oct 15, 2018 at 09:46:40AM -0400, sunpeng...@amd.com wrote: >> From: Leo Li >> >> This fixes a general protection fault, caused by accessing the contents >> of a flip_done completion object that has already been freed. It occurs >> due to th