drm/radeon/kms/pm: add support for no display power states

The lowest power states often cause display problems, so only enable
them when all displays are off.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index e39e2b4ec979..480a83ff54d5 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -658,6 +658,9 @@ struct radeon_voltage {
         u32 voltage;
 };
 
+/* clock mode flags */
+#define RADEON_PM_MODE_NO_DISPLAY          (1 << 0)
+
 struct radeon_pm_clock_info {
         /* memory clock */
         u32 mclk;
@@ -665,12 +668,12 @@ struct radeon_pm_clock_info {
         u32 sclk;
         /* voltage info */
         struct radeon_voltage voltage;
-        /* standardized clock flags - not sure we'll need these */
+        /* standardized clock flags */
         u32 flags;
 };
 
 /* state flags */
-#define RADEON_PM_SINGLE_DISPLAY_ONLY (1 << 0)
+#define RADEON_PM_STATE_SINGLE_DISPLAY_ONLY (1 << 0)
 
 struct radeon_power_state {
         enum radeon_pm_state_type type;