drm/radeon/dpm/ni: filter clocks based on voltage/clk dep tables

filter out mclk and sclk levels higher than listed in the clk
voltage dependency tables.  Supporting these clocks will require
additional driver tweaking that isn't supported yet.

See bug:
https://bugs.freedesktop.org/show_bug.cgi?id=68235

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

diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c
index 6c398a456d78b53668a73dbc82f369157c918647..f26339028154274609f31247580d03cbbed0d312 100644 (file)
--- a/drivers/gpu/drm/radeon/ni_dpm.c
+++ b/drivers/gpu/drm/radeon/ni_dpm.c
@@ -787,6 +787,7 @@ static void ni_apply_state_adjust_rules(struct radeon_device *rdev,
        bool disable_mclk_switching;
        u32 mclk, sclk;
        u16 vddc, vddci;
+       u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc;
        int i;
 
        if ((rdev->pm.dpm.new_active_crtc_count > 1) ||
@@ -813,6 +814,29 @@ static void ni_apply_state_adjust_rules(struct radeon_device *rdev,
                }
        }
 
+       /* limit clocks to max supported clocks based on voltage dependency tables */
+       btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk,
+                                                       &max_sclk_vddc);
+       btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk,
+                                                       &max_mclk_vddci);
+       btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
+                                                       &max_mclk_vddc);
+
+       for (i = 0; i < ps->performance_level_count; i++) {
+               if (max_sclk_vddc) {
+                       if (ps->performance_levels[i].sclk > max_sclk_vddc)
+                               ps->performance_levels[i].sclk = max_sclk_vddc;
+               }
+               if (max_mclk_vddci) {
+                       if (ps->performance_levels[i].mclk > max_mclk_vddci)
+                               ps->performance_levels[i].mclk = max_mclk_vddci;
+               }
+               if (max_mclk_vddc) {
+                       if (ps->performance_levels[i].mclk > max_mclk_vddc)
+                               ps->performance_levels[i].mclk = max_mclk_vddc;
+               }
+       }
+
        /* XXX validate the min clocks required for display */
 
        if (disable_mclk_switching) {