Disable cac setup on SI for now since it causes
strange performance level restrictions on certain
cards.  I suspect there may be issues with some of
the 64 bit fixed point double emulation that is used
to set up those parameters.  I need to double check
the math before this can be re-enabled.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

0x6835 should be treated as a cape verde pro.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Update alogorithm as per internal advice.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Need to set the DISP*_GAP fields as well as the
DISP*_GAP_MCHG fields.  Same as on previous asics.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Check if we can switch the mclk during the vblank time otherwise
we may get artifacts on the screen when the mclk changes.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Allows you to force the selected performance level via sysfs.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Add #include <linux/seq_file.h> to *_dpm.c files
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This allows you to look at the current DPM state via
debugfs.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Fixes hangs with DPM in some cases.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

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

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

This adds dpm support for SI asics.  This includes:
- dynamic engine clock scaling
- dynamic memory clock scaling
- dynamic voltage scaling
- dynamic pcie gen1/gen2/gen3 switching
- power containment
- shader power scaling

Set radeon.dpm=1 to enable.

v2: enable hainan support, rebase
v3: guard acpi stuff
v4: fix 64 bit math
v5: fix 64 bit div harder
v6: fix thermal interrupt check noticed by Jerome
v7: attempt fix state enable
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>