linux.git/drivers/gpu/drm/amd/display/dmub/src, branch v5.9

Revert "drm/amd/display: add mechanism to skip DCN init"

2020-07-10T21:41:25+00:00

To avoid s3 faild at the first cycle on renoir platform, it needs to
revert this patch:
drm/amd/display: add mechanism to skip DCN init

Signed-off-by: changfeng 
Ackedy-by: Huang Rui 
Signed-off-by: Alex Deucher

drm/amd/display: Add missing CW4 programming for DCN30

2020-07-08T13:04:14+00:00

[Why]
To support inbox1 in CW4 we need to actually program CW4 instead of
region 4 for newer firmware.

This is done correctly on DCN20/DCN21 but this code wasn't added to
DCN30.

[How]
Copy over the missing code. It doesn't need address translation since
DCN30 uses virtual addressing.

Signed-off-by: Nicholas Kazlauskas 
Reviewed-by: Bhawanpreet Lakha 
Signed-off-by: Alex Deucher

drm/amd/display: Fill in dmub_srv fw_version from firmware metadata

2020-07-01T05:59:25+00:00

[Why]
DMCUB firmware version is now available from firmware metadata block.

We should be passing this into dmub_srv so we can know when to apply
firmware version specific functionality like using CW4 only instead
of the REGION4.

[How]
We don't have the helpers for DM to actually extract out firmware
metadata block themselves.

We could add that and add helpers in DM to grab this, but not every
creation sequence has firmware instruction before dmub_srv_create.

Easiest way to handle this is to fill this in automatically per DM in
the place we do have it - when calculating the region parameters. But
only fill it in if DM already hasn't in case we need to override with
a specific version.

We aren't do anything firmware version specific in dmub_srv_create
today that does require fw_version, so while it's a little unituitive
to do it when calculating region parameters it works for now.

Signed-off-by: Nicholas Kazlauskas 
Reviewed-by: Tony Cheng 
Acked-by: Rodrigo Siqueira 
Signed-off-by: Alex Deucher

drm/amd/display: add mechanism to skip DCN init

2020-07-01T05:59:25+00:00

[Why]
If optimized init is done in FW. DCN init be skipped in driver. This
need to be communicated between driver and fw and maintain backwards
compatibility.

[How]
Use DMUB scratch 0 bit 2 to indicate optimized init done in fw and
use DMUB scatch 4 bit 0 to indicate drive supports the optimized flow
so FW will perform it.

Signed-off-by: Eric Yang 
Reviewed-by: Tony Cheng 
Acked-by: Rodrigo Siqueira 
Signed-off-by: Alex Deucher

drm/amd/display: not reset dmub in driver.

2020-07-01T05:59:21+00:00

[Why]
during S0i3, set power state is toggled a few times,
and dmub uC will restart with current reset/hw_init.

[How]
Remove reset in set power state, and before doing hw_init,
check if dmub is enabled, and doing FW autoload check only
if dmub is already enabled.

Signed-off-by: Yongqiang Sun 
Reviewed-by: Tony Cheng 
Acked-by: Qingqing Zhuo 
Signed-off-by: Alex Deucher

drm/amd/display: runtime select dmub emulatior.

2020-07-01T05:59:20+00:00

[Why & How]
Add emul specific hw function to dmub, in case of
emulator is created, we can runtime switch between
dmub emulator or dmub uC via is_virtual flag in dmub.

Signed-off-by: Yongqiang Sun 
Reviewed-by: Tony Cheng 
Acked-by: Qingqing Zhuo 
Signed-off-by: Alex Deucher

drm/amd/display: Add DCN3 DMUB

2020-07-01T05:59:15+00:00

DMUB (Display Micro-Controller Unit)

Used to read/write regs

Signed-off-by: Bhawanpreet Lakha 
Signed-off-by: Alex Deucher

drm/amd/display: combine public interfaces into single header

2020-05-28T18:00:51+00:00

[Why]
We want to better encapsulate all driver-fw dependencies into a single
file.

[How]
Combine all the headers under inc folder into a single header

Signed-off-by: Anthony Koo 
Reviewed-by: Tony Cheng 
Acked-by: Qingqing Zhuo 
Signed-off-by: Alex Deucher

drm/amd/display: Increase Default Sizes of FW State and Trace Buffer

2020-05-28T18:00:50+00:00

[WHY]
To facilitate DM removing the dependency between dc and the firmware
binary.

[HOW]
Setting the default values to match VBIOS: 64 KB. These values are only
used if meta is absent.

Signed-off-by: David Galiffi 
Reviewed-by: Nicholas Kazlauskas 
Acked-by: Qingqing Zhuo 
Signed-off-by: Alex Deucher

drm/amd/display: Support CW4 for DMUB ringbuffer inbox

2020-05-28T18:00:48+00:00

[Why]
Region 4 is non cacheable and slower than using cache window 4.

[How]
Check the firmware version to determine how we should program the
base address and memory windows.

Signed-off-by: Nicholas Kazlauskas 
Reviewed-by: Tony Cheng 
Acked-by: Rodrigo Siqueira 
Signed-off-by: Alex Deucher