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path: root/drivers/gpu/drm/amd/display/dc/inc/dc_link_dp.h (follow)
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2019-10-10drm/amd/display: check phy dpalt lane count configLewis Huang1-0/+3
[Why] Type-c PHY config is not align with dpcd lane count. When those values didn't match, it cause driver do link training with 4 lane but phy only can output 2 lane. The link trainig always fail. [How] 1. Modify get_max_link_cap function. According DPALT_DP4 to update max lane count. 2. Add dp_mst_verify_link_cap to handle MST case because we didn't call dp_mst_verify_link_cap for MST case. Signed-off-by: Lewis Huang <Lewis.Huang@amd.com> Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-15drm/amd/display: check hpd before retry verify link capWenjing Liu1-0/+5
[why] During detection link training if a display is disconnected, the current code will retry 3 times of link training on disconnected link before giving up. [how] Before each retry check for HPD status, only retry verify link cap when HPD is still high. Also put a 10ms delay between each retry to improve the chance of success. Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Abdoulaye Berthe <Abdoulaye.Berthe@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-15drm/amd/display: Set DSC before DIG front-end is connected to its back-endNikola Cornij1-1/+2
[why] At the time DIG FE is connected to its BE, the clocks in OTG are enabled and PHY will also be set up. When DSC has to be used to fit the stream into the available bandwidth, without DSC being set DIG could get exposed to the higer bandwidth it (or link) could handle. This causes the HW to "reject" video enable setup (the register shows that video enable was attempted, but the status bit shows it as disabled). [how] - Separate DSC setup into DSC register config and DSC PPS SDP setup - Move most of the DSC setup (register config) to before dcn10_link_encoder_connect_dig_be_to_fe() is called - Set up DSC PPS SDP after DIG FE is connected to its BE. This is because setting DSC PPS SDP before that has no effect. Signed-off-by: Nikola Cornij <nikola.cornij@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-15drm/amd/display: Synchronous DisplayPort Link TrainingDavid Galiffi1-0/+3
[WHY] We require a method to perform synchronous link training. [HOW] Sync LT is broken into 3 basic steps. "Begin" starts the state machine, and resets "preferred" link settings. "Attempt" will attempt to train the link with a given set of training parameters. "End" stops the state machine, and will optionally disable the link phy. Between "Begin" and "End" DPCD:600h must not be set to "2" (D3:Powered Down). Between "Begin" and "End", there may be multiple "Attempts" with different training parameters. Signed-off-by: David Galiffi <david.galiffi@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-07-18drm/amd/display: add hdmi2.1 dsc pps packet programmingDmytro Laktyushkin1-0/+1
This change adds EMP packet programming for enabling dsc with hdmi. The packets are structured according to VESA HDMI 2.1x r2 spec, section 10.10.2.2. Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-22drm/amd/display: decouple dsc adjustment out of enablementWenjing Liu1-0/+1
[why] dsc adjustment is allowed via stream update sequence. dsc enablement is only allowed via commit stream sequence. with the current unified dsc set function, it is hard to determine which sequence it is called by. The solution is to decouple dsc adjustment out of enablement sequence so we can handle them separately. [how] decouple dsc adjustment out of enablement. Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com> Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-06-22drm/amd/display: Add DSC support for Navi (v2)Harry Wentland1-0/+6
Add support for DCN2 DSC (Display Stream Compression) HW Blocks: +--------++------+ +----------+ | HUBBUB || HUBP | <-- | MMHUBBUB | +--------++------+ +----------+ | ^ v | +--------+ +--------+ | DPP | | DWB | +--------+ +--------+ | v ^ +--------+ | | MPC | | +--------+ | | | v | +-------+ +-------+ | | OPP | <--> | DSC | | +-------+ +-------+ | | | v | +--------+ / | OPTC | -------------- +--------+ | v +--------+ +--------+ | DIO | | DCCG | +--------+ +--------+ v2: rebase (Alex) Signed-off-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-27drm/amd/display: Retry link training againBhawanpreet Lakha1-1/+2
[Why] Some receivers seem to fail the first link training but are good on subsequent tries. We want to retry link training again. This fixes HTC vive pro not lighting up after being disabled. [How] Check if the link training passed without fall back if this is not the case then we retry link training. Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-07-24drm/amd/display: allow diags to skip initial link trainingTony Cheng1-1/+1
[why] diag specify what the full config and is only concerned about pass/fail at the end having inter-op code like verifiying we can actually train at reported link rate slows down diag test and add complexity we don't need [how] add dc_debug option to skip capability link trianing also remove hbr in function name as verify is not specific to hbr Signed-off-by: Tony Cheng <tony.cheng@amd.com> Reviewed-by: Ken Chalmers <ken.chalmers@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-02-19drm/amd/display: Add return value for detect dp.Yongqiang Sun1-1/+1
System soft hang when hotplug specific 4K DP panel due to link caps read error and incorrect link setting parmas to enable dp. Add status check for DPCD read and add return value for detect dp, in case of false, return from caller, avoid further false operation. 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>
2017-09-29amdgpu/dc: set some of the link dp code to static.Dave Airlie1-8/+0
These aren't currently used outside this file. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-26drm/amd/display: Rename dc_stream to dc_stream_stateHarry Wentland1-2/+2
find -name Makefile -o -name Kconfig -o -name "*.c" -o -name "*.h" \ -o -name "*.cpp" -o -name "*.hpp" | \ xargs sed -i 's/struct dc_stream/struct dc_stream_state/g' find -name Makefile -o -name Kconfig -o -name "*.c" -o -name "*.h" \ -o -name "*.cpp" -o -name "*.hpp" | \ xargs sed -i 's/struct dc_stream_state_update/struct dc_stream_update/g' find -name Makefile -o -name Kconfig -o -name "*.c" -o -name "*.h" \ -o -name "*.cpp" -o -name "*.hpp" | \ xargs sed -i 's/struct dc_stream_state_status/struct dc_stream_status/g' Plus some manual changes 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>
2017-09-26drm/amd/display: add detect caps for edpRoman Li1-0/+2
1. The caps detect sequence for edp is different from dp. Added separate function for edp. 2. Removed max_link_setting and replaced it with verified to avoid confusion. 3. Reverted sink count guard for edp powerdown as unnecessary with the changes above. Signed-off-by: Roman Li <Roman.Li@amd.com> Signed-off-by: Tony Cheng <tony.cheng@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>
2017-09-26drm/amd/display: Roll core_stream into dc_streamLeo (Sunpeng) Li1-2/+2
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-26drm/amd/display: Roll core_link into dc_linkHarry Wentland1-8/+8
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>
2017-09-26drm/amd/display: link training fallback actionsDing Wang1-0/+8
Signed-off-by: Ding Wang <ding.wang@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>
2017-09-26drm/amd/display: Fix for tile MSTDing Wang1-0/+2
- Set stream signal type to be SST when setting non-tile timing on MST tiled display. - Disable MST on sink after disabling MST link. - Enable MST on sink before enabling MST link. Signed-off-by: Ding Wang <Ding.Wang@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-09-26drm/amd/dc: Add dc display driver (v2)Harry Wentland1-0/+60
Supported DCE versions: 8.0, 10.0, 11.0, 11.2 v2: rebase against 4.11 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>
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