drm/radeon/kms/pm: add additional asic callbacks
- pm_misc() - handles voltage, pcie lanes, and other non
clock related power mode settings. Currently disabled.
Needs further debugging
- pm_prepare() - disables crtc mem requests right now.
All memory clients need to be disabled when changing
memory clocks. This function can be expanded to include
disabling fb access as well.
- pm_finish() - enable active memory clients.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/evergreen_reg.h b/drivers/gpu/drm/radeon/evergreen_reg.h
index 9dba6d9..93aab2e 100644
--- a/drivers/gpu/drm/radeon/evergreen_reg.h
+++ b/drivers/gpu/drm/radeon/evergreen_reg.h
@@ -166,6 +166,7 @@
/* CRTC blocks at 0x6df0, 0x79f0, 0x105f0, 0x111f0, 0x11df0, 0x129f0 */
#define EVERGREEN_CRTC_CONTROL 0x6e70
# define EVERGREEN_CRTC_MASTER_EN (1 << 0)
+# define EVERGREEN_CRTC_DISP_READ_REQUEST_DISABLE (1 << 24)
#define EVERGREEN_CRTC_STATUS 0x6e8c
#define EVERGREEN_CRTC_UPDATE_LOCK 0x6ed4