drm/radeon/kms/pm: add asic specific callbacks for setting power state (v2)

(v2) Add evergreen vbl checks

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

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 094c29dd96e3..c2d1946535ab 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -92,6 +92,43 @@ void r600_gpu_init(struct radeon_device *rdev);
 void r600_fini(struct radeon_device *rdev);
 void r600_irq_disable(struct radeon_device *rdev);
 
+void r600_set_power_state(struct radeon_device *rdev)
+{
+        /* if *_clock_mode are the same, *_power_state are as well */
+        if (rdev->pm.requested_clock_mode == rdev->pm.current_clock_mode)
+                return;
+
+        DRM_INFO("Setting: e: %d m: %d p: %d\n",
+                 rdev->pm.requested_clock_mode->sclk,
+                 rdev->pm.requested_clock_mode->mclk,
+                 rdev->pm.requested_power_state->non_clock_info.pcie_lanes);
+
+        /* set pcie lanes */
+        /* TODO */
+
+        /* set voltage */
+        /* TODO */
+
+        /* set engine clock */
+        radeon_sync_with_vblank(rdev);
+        radeon_pm_debug_check_in_vbl(rdev, false);
+        radeon_set_engine_clock(rdev, rdev->pm.requested_clock_mode->sclk);
+        radeon_pm_debug_check_in_vbl(rdev, true);
+
+#if 0
+        /* set memory clock */
+        if (rdev->asic->set_memory_clock) {
+                radeon_sync_with_vblank(rdev);
+                radeon_pm_debug_check_in_vbl(rdev, false);
+                radeon_set_memory_clock(rdev, rdev->pm.requested_clock_mode->mclk);
+                radeon_pm_debug_check_in_vbl(rdev, true);
+        }
+#endif
+
+        rdev->pm.current_power_state = rdev->pm.requested_power_state;
+        rdev->pm.current_clock_mode = rdev->pm.requested_clock_mode;
+}
+
 bool r600_gui_idle(struct radeon_device *rdev)
 {
         if (RREG32(GRBM_STATUS) & GUI_ACTIVE)