2 files changed, 19 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c
index 05ff315e8e9e..0d0f065a499c 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.c
+++ b/drivers/gpu/drm/radeon/btc_dpm.c
@@ -1168,6 +1168,23 @@ static const struct radeon_blacklist_clocks btc_blacklist_clocks[] =
         { 25000, 30000, RADEON_SCLK_UP }
 };
 
+void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
+                                                     u32 *max_clock)
+{
+        u32 i, clock = 0;
+
+        if ((table == NULL) || (table->count == 0)) {
+                *max_clock = clock;
+                return;
+        }
+
+        for (i = 0; i < table->count; i++) {
+                if (clock < table->entries[i].clk)
+                        clock = table->entries[i].clk;
+        }
+        *max_clock = clock;
+}
+
 void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table,
                                         u32 clock, u16 max_voltage, u16 *voltage)
 {
diff --git a/drivers/gpu/drm/radeon/btc_dpm.h b/drivers/gpu/drm/radeon/btc_dpm.h
index 1a15e0e41950..3b6f12b7760b 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.h
+++ b/drivers/gpu/drm/radeon/btc_dpm.h
@@ -46,6 +46,8 @@ void btc_adjust_clock_combinations(struct radeon_device *rdev,
                                    struct rv7xx_pl *pl);
 void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table,
                                         u32 clock, u16 max_voltage, u16 *voltage);
+void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table,
+                                                     u32 *max_clock);
 void btc_apply_voltage_delta_rules(struct radeon_device *rdev,
                                    u16 max_vddc, u16 max_vddci,
                                    u16 *vddc, u16 *vddci);