Commit Graph

43761 Commits

Author SHA1 Message Date
Rex Zhu
8e68627958 drm/amd/pp: Move helper functions to smu_help.c
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:57:21 -05:00
Rex Zhu
c425688520 drm/amd/pp: Replace rv_* with smu10_*
Powerplay is for the hw ip smu, for RV, smu10 is used,
so use smu10 as the prefix of the files name/function name.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:57:12 -05:00
Rex Zhu
567cc73a1b drm/amd/pp: Fix function parameter not correct
caused by "commit dcefb7668e5b4fb56099b16d1790cd3056322b03"

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:57:02 -05:00
Rex Zhu
0d8a81d926 drm/amd/pp: Add rv_copy_table_from/to_smc to smu backend function table
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:56:53 -05:00
Rex Zhu
56088be9af drm/amd/pp: Add new smu backend function smc_table_manager
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:56:44 -05:00
Rex Zhu
7a67f4559d drm/amd/pp: Mark internal functions as static in rv_smumgr.c
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:56:36 -05:00
Rex Zhu
88c1a70d58 drm/amd/pp: Add rv_read_arg_from_smc to smu backend function table
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:56:29 -05:00
Rex Zhu
52911e0356 drm/amd/pp: Remove meanless return value check in RV
In send_message_to_smu helper functions,
Print out the error code for debug if smu failed to response.

The helper functions always return true, so no need to
check their return value.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:56:21 -05:00
Rex Zhu
7f8e66b603 drm/amd/pp: Delete is_smc_ram_running function on RV
1. There is a race condition when another ip also use same register pairs
2. check once at boot up by GetDriverIfVersion message is sufficient
   to check SMU health. so delete is_smc_ram_running check.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:56:11 -05:00
Rex Zhu
847e82615b drm/amd/pp: Clean up header file include
smu7_smumgr.h should not be included in rv and vega, The common functions
for all smu7 asics are put in smu_smumgr.c.

Not include cgs interface in smumgr.c. the code used cgs interface has been
deleted.

Not include smu_ucode_xfer_vi.h in rv/vega

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:55:56 -05:00
Rex Zhu
fd06518d57 drm/amd/pp: Fix memory leak in error path in smumgr
Free the backend structure if we fail to allocate device memory.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:55:46 -05:00
Rex Zhu
116af45059 drm/amd/pp: Simplified the avfs btc state on smu7
AVFS feature support/not support is enough to driver.

so remove the complex define of the avfs btc state.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:55:38 -05:00
Andrey Grodzovsky
3bb271f3ca drm/amd/powerplay: Fix KASAN user after free on driver unload.
Reusing local handle to initialize BO without resetting it to
NULL is wrong since it causes amdgpu_bo_create_reserved to skip
new BO creation and just reuse the given pointer for pinning.

Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-15 09:55:03 -05:00
Feifei Xu
2f51d6e8e4 drm/amdgpu/sdma4: Remove unused header file from sdma_v4_0.c
Remove mmhub header files inclusion which not used.

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:19 -05:00
Alex Deucher
fcb7d51571 drm/amdgpu/sdma4: use num_instances for clock/powergating config
Rather then relying on the asic type for the second instance.
Makes it more consistent with the rest of the code.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
2018-03-14 16:01:18 -05:00
Alex Deucher
da42960918 drm/amdgpu: remove trailing whitespace from soc15ip.h
no intended functional change.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:18 -05:00
Alex Deucher
a423f79ad7 drm/amdgpu/powerplay/vega10: fix memory leak in error path
Free the backend structure if we fail to allocate device
memory.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:18 -05:00
Michel Dänzer
daf8809626 drm/amdgpu/dce: Don't turn off DP sink when disconnected
Turning off the sink in this case causes various issues, because
userspace expects it to stay on until it turns it off explicitly.

Instead, turn the sink off and back on when a display is connected
again. This dance seems necessary for link training to work correctly.

Bugzilla: https://bugs.freedesktop.org/105308
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:17 -05:00
Colin Ian King
c30c950ed8 drm/amd/pp: remove redundant pointer internal_buf
The pointer internal_buf is assigned a value but the pointer is never
read, hence it is redundant and can be removed.

Cleans up clang warning:
drivers/gpu/drm/amd/amdgpu/../powerplay/smumgr/smu7_smumgr.c:630:2:
warning: Value stored to 'internal_buf' is never read

Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:17 -05:00
Alex Deucher
5494d8640f drm/amdgpu: move getting pcie info to common code
No need to replicate it in several places.

Reviewed-by: Rex Zhu <rezhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:16 -05:00
Alex Deucher
3cdfe70056 drm/amdgpu/soc15: always load the psp module
Regardless of whether the user has selected psp fw loading or
not.  It's still needed for GPU reset among other things.
There are already guards in place to avoid setting up the full
psp if PSP fw loading is not enabled.

Reviewed-by: Rex Zhu <rezhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:16 -05:00
Alex Deucher
454bbbf915 drm/amdgpu: use adev->firmware to determine whether to load the PSP module
The per device firmware load method is limited to what makes sense for
that asic rather than whatever arbitrary value may have been set by the
user.

Reviewed-by: Rex Zhu <rezhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:16 -05:00
Alex Deucher
19aede7791 drm/amdgpu: move firmware loading type setup to common code
No need to replicate it in several places.

Reviewed-by: Rex Zhu <rezhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:15 -05:00
Alex Deucher
a9f3636019 drm/amdgpu/psp: add a few more fw load type checks
We already checked and returned early in most of the IP
functions, fill in the rest as well.

Reviewed-by: Rex Zhu <rezhu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 16:01:15 -05:00
Shirish S
2a7b58293d drm/amd/display: Check msg->size before starting aux transfer
This patch adds an essential check related to the size of the
payload to be transferred via aux channel.

Without this check dal_ddc_service_read_dpcd_data() is fed with
inappropriate payload size leading to deadlocks.

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>
2018-03-14 16:01:15 -05:00
Dmytro Laktyushkin
17ac50368f drm/amd/display: clean up dcn pplib notification call
We have unused variables being populated when notifying pplib.
This change amends that.

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 16:01:14 -05:00
Yongqiang Sun
14d6f64436 drm/amd/display: Fixed dim around 1sec when resume from S3 (v2)
root cause:
DMCU try to perform a smoothness brightness change.Incorrect initial
brightness level causes the 1 sec dim.
Change:
Cache brightness level in stream, and clear it when edp backlight on.
If brightness level in stream is 0, set brightness with ramp value is 0.
DMCU will set the brightness without smoothness transition.

v2: squash in null pointer fix (Harry)

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>
2018-03-14 16:01:14 -05:00
Jerry (Fangzhi) Zuo
2a54bd6e08 drm/amd/display: Use actual TG instance instead of pipe instance
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@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 15:16:36 -05:00
Harry Wentland
d1aaad05d0 drm/amd/display: Check for HW blocks in HWSS, rather than DC core for cursor
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>
2018-03-14 15:16:36 -05:00
Oak Zeng
3760f76cbe drm/amdgpu: Move IH clientid defs to separate file
This is preparation for sharing client ID definitions
between amdgpu and amdkfd

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:16:35 -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
Yongqiang Sun
45bb8dd696 drm/amd/display: Set disp clk in a safe way to avoid over high dpp clk. (v2)
Increase clock, if current dpp div is 0 and request dpp div is 1, request clk is
higher than maximum dpp clk as per dpm table.
	set dispclk to the value of maximum supported dpp clk
	set div to 1
	set dispclk to request value.
Decrease clock, currrent dpp div is 1 and request dpp div is 0, current clk is
higher than maximum dpp clk as per dpm table.
	set dispclk to the value of maximum supported dpp clk
	set div to 0
	set dispclk to request value.

v2: squash in !DCN build fix

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@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>
2018-03-14 15:16:34 -05:00
Samson Tam
5231f5d112 drm/amd/display: add support for regkey "LCDFreeSyncDefault"
Signed-off-by: Samson Tam <Samson.Tam@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>
2018-03-14 15:16:34 -05:00
Shirish S
df534fff0d drm/amd/display: Correct the plane enumeration order (v2)
The order of planes is given by the order they are enumerated
by kms.
Planes with a higher ID appears above planes with a lower ID.

Currently the planes are enumerated in the wrong order,
putting the nv12 only plane after the two RGBA planes.

This patch corrects the plane enumeration order such that all
the overlay planes are initialized first then the primary planes.

Due to this change in order the dc_add_plane_to_context() shall
receive the planes in reverse order hence this patch reverses
the parsing of planes in DM side itself.

v2: drop local reverse macro for upstream

Signed-off-by: Shirish S <shirish.s@amd.com>
Signed-off-by: Pratik Vishwakarma <Pratik.Vishwakarma@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:16:34 -05:00
Vitaly Prosyak
9eee21376b drm/amd/display: Fix handling of linear transfer function
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>
2018-03-14 15:08:48 -05:00
Tony Cheng
3f7194bce2 drm/amd/display: dal 3.1.38
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>
2018-03-14 15:08:47 -05:00
Anthony Koo
64ed6a2eba drm/amd/display: Add variable refresh rate parameters to DC structures
Time stamping will be part of surface, and will be updated when address is flipped.
FreeSync parameters will be attached to stream, as it adjusts the timing dynamically.

Signed-off-by: Anthony Koo <Anthony.Koo@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 15:08:47 -05:00
Anthony Koo
a3e1737ed6 drm/amd/display: Implement stats logging
Stats will be used for debug purposes

Signed-off-by: Anthony Koo <Anthony.Koo@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 15:08:47 -05:00
Eric Yang
e18d308673 drm/amd/display: early return if not in vga mode in disable_vga
The work around for hw bug causes S3 resume failure. Don't execute
disable vga logic if not in vga mode.

Signed-off-by: Eric Yang <Eric.Yang2@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
Mikita Lipski
d54ee94603 drm/amd/display: Enable backlight support for pre-DCE11 ASICs
Initializing ABM and DMCU modules for dce 80/81/83/100 as in DCE110
Adding constructors and destructors for each module.
Adding register list for DMCU in dce80 as some registers are missing
in dce80 from the basic list. DMCU is never used, so it would not have
any functional impact.

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>
2018-03-14 15:08:46 -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
Bhawanpreet Lakha
713d451d2d drm/amd/display: Use MACROS instead of dm_logger
Use DC_LOGGER macro for logs.

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:08:45 -05:00
Bhawanpreet Lakha
f0ba51e83a drm/amd/display: Move DTRACE and dml_print defines
These MACROS are only being used by a few files but
gets pulled in by dc.h

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@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 15:08:45 -05:00
Yongqiang Sun
8e437c7991 drm/amd/display: Modified set bandwidth sequence.
This change make sure bandwidth is set properly.
For increase bandwidth, set bandwidth before backend
and front end programming.
For decrease bandwidth, set bandwidth after.
To avoid smu hang when reboot and dpms due to 0 disp clk,
keep min disp clock as 100Mhz.

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>
2018-03-14 15:08:44 -05:00
Eric Yang
d03f3f6304 drm/amd/display: fix check condition for edp power control
Per discussion with VBIOS team, the orginal check is not correct in
all cases on latest VBIOS. Additional check is needed. This change should
maintain old behaviour on older VBIOS.

Signed-off-by: Eric Yang <Eric.Yang2@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>
2018-03-14 15:08:44 -05:00
Bhawanpreet Lakha
90e3103e19 drm/amd/display: Fix takover from VGA mode
HW Engineer's Notes:
 During switch from vga->extended, if we set the VGA_TEST_ENABLE and then
 hit the VGA_TEST_RENDER_START, then the DCHUBP timing gets updated correctly.
 Then vBIOS will have it poll for the VGA_TEST_RENDER_DONE and unset
 VGA_TEST_ENABLE, to leave it in the same state as before.

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@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 15:08:44 -05:00
Jerry (Fangzhi) Zuo
316178f072 drm/amd/display: Allow passing of syspll id to get_smu_clock_info
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2018-03-14 15:08:43 -05:00
Yongqiang Sun
623a7e96cd drm/amd/display: Remove 300Mhz minimum disp clk limit.
300Mhz disp clk limit was a workaround that was fixed in SMU and is no
longer needed.

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>
2018-03-14 15:08:43 -05:00
Leo (Sunpeng) Li
5e3e341cee drm/amd/display: Convert CTM to 2's complement
DRM's documentation for the color transform matrix does not specify
whether the values are in signed-magnitude, or 2's complement.
Therefore, it was assumed to use 2's complement.

However, existing usermode implementations use signed-magnitude.
Therefore, conform to existing standards, and convert to 2's complement
internally.

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>
2018-03-14 15:08:43 -05:00
SivapiriyanKumarasamy
a7596f25db drm/amd/display: Varibright add null check
Add null check for stream update

Signed-off-by: SivapiriyanKumarasamy <sivapiriyan.kumarasamy@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@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