This makes it easier the understand what the code is
doing.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Only Cape Verde supports power gating.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

These are needed for certain UVD power saving features.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Required for DPM on SI.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This is required for certain power management features.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

TN has some additional powergating features beyond what is
supported on ON/LN.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Enables PCIE ASPM (Active State Power Management) on
SI asics.

v2: fix typo
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Enables PCIE ASPM (Active State Power Management) on
evergreen-cayman asics.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Required for accessing certain pcie related registers.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

If both the motherboard and GPU support pcie gen2 or 3,
enable it.  PCIE gen2 and 3 offer more bandwidth than
pcie gen1.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

SI uses a new atom table revision.  Required for DPM on SI.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

SI uses a new atom table.  Required for DPM on SI.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

There's a new table for calculating the memory pll
parameters on SI.  Required for SI DPM support.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

These functions use acpi methods to adjust the pcie
gen speed.  Used by DPM.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Use the new asic callback instead.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Now that the proper fix has been implemented I can
remove the last remnants of the initial implementation.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This properly implemented dynamic state adjustment by
using a working copy of the requested and current
power states.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This properly implemented dynamic state adjustment by
using a working copy of the requested and current
power states.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This properly implemented dynamic state adjustment by
using a working copy of the requested and current
power states.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This properly implemented dynamic state adjustment by
using a working copy of the requested and current
power states.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

For r6xx-evergreen, they are no-ops as they don't support
any dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Needed to properly handle dynamic state adjustment.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This adds dpm support for cayman asics.  This includes:
- clockgating
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2 switching (requires additional acpi support)
- power containment
- shader power scaling

Set radeon.dpm=1 to enable.

v2: fold in tdp fix
v3: fix indentation
v4: fix 64 bit div
v5: attempt to fix state enable
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>

Use a dedicated copy of the current power state since
we may have to adjust it on the fly.

v2: fix up redundant state sets
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Use a dedicated copy of the current power state since
we may have to adjust it on the fly.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Use a dedicated copy of the current power state since
we may have to adjust it on the fly.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Driver needs this information to validate power states.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This data will be needed for dpm on newer asics.

v2: fix typo in rebase
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

When using UVD, the driver must switch to a special UVD power
state.  In the CS ioctl, switch to the power state and schedule
work to change the power state back, when the work comes up,
check if uvd is still busy and if not, switch back to the user
state, otherwise, reschedule the work.

Note:  We really need some better way to decide when to
switch out of the uvd power state.  Switching power states
while playback is active make uvd angry.

V2: fix locking.

V3: switch from timer to delayed work

V4: check fence driver for UVD jobs, reduce timeout to
    1 second and rearm timeout on activity

v5: rebase on new dpm tree

v6: rebase on interim uvd on demand changes

v7: fix UVD when DPM is disabled

v8: unify non-DPM and DPM UVD handling

v9: remove leftover idle work struct
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <deathsimple@vodafone.de>