Commit Graph

306 Commits

Author SHA1 Message Date
Dmytro Laktyushkin
05541913a9 drm/amd/display: remove dentist_vco_freq from resource_pool
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-13 14:49:12 -05:00
Harry Wentland
084b3765ec drm/amd/display: Return aux replies directly to DRM
Currently we still go through DC code that does error checking, retries,
etc. There's no need for that since DRM already does that for us. This
simplifies the code a bit and makes it easier to debug.

This also ensures we correctly tell DRM how many bytes have actually
been read, as we should. This allows DRM to correctly read the EDID on
the Chamelium DP port.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-13 14:48:36 -05:00
Tony Cheng
16aecfd4bf drm/amd/display: generic indirect register access
add generic indirect register access following our register access pattern

this will make it easier to review code and programming sequence,
with all the complexity hidden in macro

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-13 14:47:33 -05:00
Harry Wentland
013fc06ea4 Revert "drm/amd/display: make dm_dp_aux_transfer return payload bytes instead of size"
This reverts commit cc19514113.

This commit was problematic on other OSes. The real solution is to
leave all the error checking to DRM and don't do it in DC, which is
addressed by "Return aux replies directly to DRM" later in this patchset.

v2: Add reason for revert.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-13 14:46:41 -05:00
Harry Wentland
37b5fcfde8 Revert "drm/amd/display: Don't return ddc result and read_bytes in same return value"
This reverts commit 8a61bc085f.

Need to revert "make dm_dp_aux_transfer return payload bytes instead of
size", which this commit is based on. That commit was problematic on
other OSes. The real solution is to leave all the error checking to DRM
and don't do it in DC, which is addressed by "Return aux replies
directly to DRM" later in this patchset.

v2: Add reason for revert.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-13 14:46:35 -05:00
Harry Wentland
bd4e725084 drm/amd/display: Make function pointer structs const
const to avoid hard-to-find bugs where some function overrides a
function pointer.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-10 14:17:23 -05:00
Christian König
a14cc8422a drm/amd/display: make function tables const
It is good practice to make global function tables const to avoid
accidental override.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-10 14:17:11 -05:00
Dmytro Laktyushkin
e21db6dbdf drm/amd/display: move dcn watermark programming to set_bandwidth
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-05 16:38:43 -05:00
Dmytro Laktyushkin
7144d3cfff drm/amd/display: separate out wm change request dcn workaround
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-05 16:38:42 -05:00
Dmytro Laktyushkin
d578839ca0 drm/amd/display: get rid of cur_clks from dcn_bw_output
Cleans up dcn_bw_output to only contain calculated info,
actual programmed values will now be stored in respective blocks.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-05 16:38:32 -05:00
Dmytro Laktyushkin
6ca1124618 drm/amd/display: rename display clock block to dccg
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-05 16:38:28 -05:00
Dmytro Laktyushkin
fab55d61b9 drm/amd/display: redesign dce/dcn clock voltage update request
The goal of this change is to move clock programming and voltage
requests to a single function. As of this change only dce is affected.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-05 16:38:28 -05:00
Dmytro Laktyushkin
765b268364 drm/amd/display: replace clocks_value struct with dc_clocks
This will avoid structs with duplicate information. Also
removes pixel clock voltage request. This has no effect since
pixel clock does not affect dcn voltage and this function only
matters for dcn.

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-05 16:38:27 -05:00
Eric Bernstein
e9522309ef drm/amd/display: Add num_opp to resource_caps
Number of OPPs to be instantiated is based on number
of timing generators, not number of pipes.

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-15 12:24:57 -05:00
Dmytro Laktyushkin
0dd6cfe15c drm/amd/display: add dentist frequency to resource pool
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-15 12:20:28 -05:00
Anthony Koo
1a05873f21 drm/amd/display: Refactor audio programming
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-15 12:20:26 -05:00
Eric Bernstein
0f6ca3bac4 drm/amd/display: Add function to get optc active size
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-15 12:20:24 -05:00
Eric Bernstein
ea4a202053 drm/amd/display: pass pipe_ctx straight to blank_pixel_data
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-06-15 12:20:21 -05:00
Charlene Liu
3ba43a5992 drm/amd/display: underflow/blankscreen recovery
[Description]
for any reason, if driver detects HUBP underflow,
if a debug option enabled to enable recovery.
it will kick in a sequence of recovery.

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-18 16:08:23 -05:00
Anthony Koo
b79655c37b drm/amd/display: Cleanup unused SetPlaneConfig
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-18 16:08:21 -05:00
Alex Deucher
2b6dc93a3d drm/amdgpu/display: remove VEGAM config option
Leftover from bringup.  No need to keep it around for
upstream.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-18 16:08:18 -05:00
Harry Wentland
8a61bc085f drm/amd/display: Don't return ddc result and read_bytes in same return value
The two ranges overlap.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:16 -05:00
Dmytro Laktyushkin
34cb6b3860 drm/amd/display: compact the rq/dlg/ttu log
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:11 -05:00
Anthony Koo
7c91bd434e drm/amd/display: add some DTN logs for input and output tf
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:10 -05:00
Eric Bernstein
3158223efd drm/amd/display: Refactor otg_blank sequence
Also rename otg_blank to blank_pixel_data.

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:08 -05:00
Eric Bernstein
8e357610ca drm/amd/display: Make program_output_csc HWSS interface function
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:08 -05:00
Jerry (Fangzhi) Zuo
0c75d5acc8 drm/amd/display: Implement VEGAM device IDs in DC
Implement device IDs for VEGAM

Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:44:01 -05:00
Yongqiang Sun
f0c0761b38 drm/amd/display: Use dig enable to determine fast boot optimization.
Linux doesn't know lid state, better to check dig enable
value from register.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:43:27 -05:00
Dmytro Laktyushkin
0a93dc7f59 drm/amd/display: add rq/dlg/ttu to dtn log
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:43:26 -05:00
Eric Bernstein
5ebfb7a599 drm/amd/display: Move DCC support functions into dchubbub
Added dchububu.h header file for common enum/struct definitions.
Added new interface functions get_dcc_compression_cap,
dcc_support_swizzle, dcc_support_pixel_format.

Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:43:25 -05:00
Eric Bernstein
fcb2008a70 drm/amd/display: Move dp_pixel_encoding_type to stream_encoder include
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:43:23 -05:00
Anthony Koo
586f27a3c2 drm/amd/display: csc_transform to dc_csc_transform
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-05-15 13:42:54 -05:00
Eric Bernstein
c5011872f6 drm/amd/display: Make DCN stream encoder shareable
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:08:09 -05:00
Yongqiang Sun
5282cbe32e drm/amd/display: Change disable backlight ramp change threshold from 0 to maximum value.
Instead of user set brightness with range of percentage,
HLK test set brightness level with range of normal, this will result in
HLK test case set brightness from 0 to 255, DC set brightness with ramp is 0,
and disabled ramp change which will fail the HLK test.
Fix:
In case of unblank stream and turn on edp, change brightness level in
stream to 0xFFFFFFFF(actural maximum level is 0xFF), use that value as
a flag to recogonize this the case of resume from S3.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Eric Yang <eric.yang2@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:08:08 -05:00
SivapiriyanKumarasamy
6e5b3587db drm/amd/display: Add vline IRQ programming for DCN
Signed-off-by: SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:45 -05:00
Anthony Koo
e09b6473c6 drm/amd/display: Rename encoder_info_packet to dc_info_packet
Move this out of the HW includes to dc_types.h

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:45 -05:00
Vitaly Prosyak
24238ee654 drm/amd/display: Add dc_lut_mode enum
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:43 -05:00
Dmytro Laktyushkin
a052a516de drm/amd/display: align dtn logs and add mpc idle bit print
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:41 -05:00
Mikita Lipski
3722c79464 drm/amd/display: Implementing new bandwidth registers for DCE120
Registers are added and defined.
Programmed to default values.
Stutter level watermark register is being set to calculated value.
Urgent level registers are programmed to the same as urgency.
The programming of the registers is not expected to have any
functional difference in performance.

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:40 -05:00
Julian Parkin
6133470c8e drm/amd/display: drop dc_validate_guaranteed
Block FP16 scaling in validate_resources codepath.

Signed-off-by: Julian Parkin <jparkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:40 -05:00
Mikita Lipski
b361521f59 drm/amd/display: Adding stutter entry wm to dce bw struct
Adding the stutter_entry_wm object to dce_bw_output struct
and populating it with bw calculations data

Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:39 -05:00
Dmytro Laktyushkin
dfd01f2999 drm/amd/display: add mpc to dtn log
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:38 -05:00
Dmytro Laktyushkin
e4b3f6f299 drm/amd/display: fix Polaris 12 bw bounding box
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-04-11 13:07:37 -05:00
Dmytro Laktyushkin
e36ec85998 drm/amd/display: update dce_calcs to latest version
Bw spreadsheet was updated while dce_calcs was not

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:16:35 -05:00
Krunoslav Kovac
a4056c2a63 drm/amd/display: use HW hdr mult for brightness boost
In MPO scenario when playing SDR clip in HDR desktop mode, Win is
boosting desktop and requests driver to boost MPO. But driver boosting
is currently done in regamma which is stream property and thus shared
between grph and video.

Redesigning the boosting in RV: use CM_HDR_MULT register which was added
for this scenario. It also has the benefit that it can be done in HIRQL.

Signed-off-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:08:46 -05:00
SivapiriyanKumarasamy
9aef1a3170 drm/amd/display: Varibright fix bug and review comments
Fix bug and make changes from review 132656

Signed-off-by: SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:08:42 -05:00
Vitaly Prosyak
44c6f2e59e drm/amd/display: Handle HDR use cases.
Implementation of de-gamma, blnd-gamma, shaper and
3d lut's.
Removed memory allocations in transfer functions.
Refactor color module.

Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-05 15:34:58 -05:00
Dmytro Laktyushkin
15cf3974eb drm/amd/display: add diags clock programming
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-05 15:34:40 -05:00
Dmytro Laktyushkin
f553e68102 drm/amd/display: add per pipe dppclk
v2: Fix commit title

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-05 15:34:33 -05:00
Shirish S
cc19514113 drm/amd/display: make dm_dp_aux_transfer return payload bytes instead of size
The drm layer expects aux->transfer() to return the payload bytes read.
Currently dm_dp_aux_transfer() returns the payload size which does not
gets updated during the read, hence not giving the right data for the
drm layer to pars edid. This leads to the drm layer to conclude as the
edid is BAD and hence some monitors/devices dont get detected properly.

This patch changes the return type of dm_dp_aux_transfer() to actual
bytes read during DP_AUX_NATIVE_READ & DP_AUX_I2C_READ.

Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-02-28 15:38:40 -05:00