The -mno-gnu-attribute option in dcn301 clk mgr makefile hides a soft vs
hard fp error for powerpc. After removing this flag, we can see some FPU
code remains there:
gcc-11.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses
hard float,
drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn301/vg_clk_mgr.o
uses soft float
Therefore, remove the -mno-gnu-attribute flag for dcn301/powerpc and
move FPU-associated code to DML folder.
Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The -mno-gnu-attribute option in clk mgr makefile for dcn30 hides a soft
vs hard fp error for powerpc. After removing this flag, we can see some
FPU code remains there:
gcc-11.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses
hard float,
drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn30/dcn30_clk_mgr.o
uses soft float
Therefore, remove the -mno-gnu-attribute flag for dcn30/powerpc and move
FPU-associated code to DML folder.
Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The -mno-gnu-attribute option in dcn21 clk mgr makefile hides a soft vs
hard fp error for powerpc. After removing this flag, we can see some FPU
code remains there:
/gcc-11.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld:
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses
hard float,
drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn21/rn_clk_mgr.o uses
soft float
Therefore, remove the -mno-gnu-attribute flag for dcn21/powerpc and move
FPU-associated code to DML folder.
Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
We are working to isolate FPU operations inside the DML folder, and the
file dcn32_clk_mgr has some of these operations. This commit moves the
FPU operations inside the clock manager and creates the dcn32_fpu file
to aggregate those operations. Note that there is no functional change
ere, just moving code from one part to another.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
For Pixel Rate control, when on HDMI, HDMI DTO should be selected
instead of DP DTO.
[How]
Pass HDMI parameter for HDMI stream, and select correct DTO.
Signed-off-by: Chris Park <chris.park@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit enables the SubVP feature. To achieve that, we need to:
- Don't force p-state disallow on SubVP (can't block dummy p-state)
- Send calculated watermark to DMCUB for SubVP
- Adjust CAB mode message to PMFW
- Add a proper locking sequence for SubVP
- Various fixes to SubVP static analysis and determining SubVP config
- Currently SubVP not supported with pipe split so merge all pipes
before setting up SubVp
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Sometimes when trying to enable some feature, we have to define some
values with educated guesses, but we mark those values as TBD, which
means "To Be Determined". However, the correct way to approach it is by
loading that information from the firmware. Anyway, some of the values
that we were experimenting with caused this issue:
ERROR: modpost: "__muldf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!
This commit fixes this issue by removing the division by two since it is
harmless in this case.
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Fixes: 265280b998 ("drm/amd/display: add CLKMGR changes for DCN32/321")
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Clang warns:
drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c:549:4: warning: misleading indentation; statement is not part of the previous 'else' [-Wmisleading-indentation]
pll_req = dc_fixpt_from_int(pll_req_reg & clk_mgr->clk_mgr_mask->FbMult_int);
^
drivers/gpu/drm/amd/amdgpu/../display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c:542:3: note: previous statement is here
else
^
1 warning generated.
Indent this statement to the left, as it was clearly intended to be
called unconditionally, which will fix the warning.
Link: https://github.com/ClangBuiltLinux/linux/issues/1655
Fixes: 3e838f7ccf ("drm/amd/display: Get VCO frequency from registers")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
In DCN32 clk hook functions, we are using the wrong reference for
get_dp_ref_clk_frequency and missing the get_dtb_ref_clk_frequency
reference. This commit adds those references.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
For DCN32 we do not have a pme workaround function defined that sends a
BacoAudio message. Default code had uses the DCN30 function for pme
workaround. PMFW headers are inconsistent with their message ID
definitions which cause ID's to clash leading to inconsistent system
behaviour. There is a clash with FCLK message due to inconsitent PMFW
headers.
[How]
Implement a new BacoAudio function to workaround the problem of
inconsistent PMFW headers in order to avoid BacoAudio message clasing
with FCLK Enable message.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Chaitanya Dhere <chaitanya.dhere@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Certain use cases will pass in zero in the new_clocks parameter for all
clocks. This results in a divide-by-zero error when attempting to round
up the new clock.
When new_clocks are zero, no rounding is required, so we can skip it.
[How]
Guard the division calculation with a check to make sure clocks are not
zero.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Description]
- When lowering DPPCLK, we want to program the DPP DTO before updating
the DPP refclk.
- Also update DPPCLK to the exact frequency that will be set after clock
divider has been programmed. This will prevent rounding errors when
making the request to PMFW (we need DPP DTO to match exactly with the
exact DPP refclk).
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Our debug struct has the min_disp_clk_khz and min_dpp_clk_khz options,
which we ignore in the DCN32. This commit introduces those checks and
the necessary calculation.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Aurabindo Jayamohanan Pillai <Aurabindo.Pillai@amd.com>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[WHY]
Logging for SMU response value after the wait allows us to know
immediately what the response value was. Makes it easier to debug should
the value be anything other than OK.
[HOW]
Using the the already available DC SMU logging functions.
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Use the same pattern as the DML Makefile and while we are here
add a missing x86 guard around the msse flags for DCN3.2.x.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
- missing in dcn30 function
- Fix a divide by 0 when ACR trigger
[How]
- Add IS_SMU_TIMEOUT() to dcn30_smu_send_msg_with_param
- Add zero check in dcn20_update_clocks_update_dentist
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Ian Chen <ian.chen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[WHY & HOW]
Implements DTB ref clock switching with reg key default to OFF.
Refactors dccg DTBCLK logic to not store redundant state information
dccg. Also removes duplicated functions that should be inherited from
other dcn versions.
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Update base.dprefclk_khz to match result from dcn32_dump_clk_registers()
Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit cleans up code that uses old variables and adds some SMU
interfaces for future flexibility.
Signed-off-by: Martin Leung <Martin.Leung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
Previously we used to send FCLK P-state enable messages upon each call
to update_clocks based on dml output. This resulted in increased message
transactions between DC and PMFW.
[How]
Update the code to check safe_to_lower status and send the message based
on dml input only on boot. This reduces message transactions. Also
remove other unwanted code based on current code status.
Signed-off-by: Chaitanya Dhere <chaitanya.dhere@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[why]
DCN has sidebands to control some clocks, it is useful for clk_mgr to
always update the clocks it explicitly controls rather than skip them
because it enables more configurations to work without SMU
[how]
only skip handling clocks where SMU manages the frequency for clocks
with DENTIST sideband (DISP/DPP), only skip the voltage request when SMU
not available, but otherwise proceed normally
Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
VBIOS default clock value was halved, so the hardcoded dtb value should be
halved as well.
dtb clock should come from SMU eventually, but now dtb clock switching is not
fully supported yet in SMU.
Halve the dtb hardcoded value for now to have UHBR10 light up. Will rely on
SMU for dtb clock switching once available. The w/a is for DCN32 only, DCN321
should adopt the original value.
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Description]
ref_dtbclk value is assigned in clk_mgr_construct,
but the clks struct is cleared in init_clocks.
Make sure to restore the value or we will get
0 value for ref_dtbclk in DCN31.
Reviewed-by: Chris Park <Chris.Park@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[Why]
When enabling an HPO stream for the first time after having previously
enabled a DIO stream there may be lingering DIO FIFO errors even though
the DIO is no longer enabled.
These can cause display clock change to hang if we don't apply the
OTG disable workaround since the ramping logic is tied to OTG on.
[How]
The workaround wasn't being applied in the sequence of:
1 DIO stream
0 streams
1 HPO stream
because current_state has no stream or planes in its context - and
it's only swapped after optimize has finished.
We should be using the incoming context instead to determine whether
this logic is needed or not.
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Jasdeep Dhillon <jdhillon@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
