drm/amd/powerplay: correct fine grained dpm force level setting

For fine grained dpm, there is only two levels supported. However
to reflect correctly the current clock frequency, there is an
intermediate level faked. Thus on forcing level setting, we
need to treat level 2 correctly as level 1.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index 3ec5a10a7c4d5d079de59d8395ced020f8bed7ab..328e258a6895d0aaf3c3cc49f485c3e40e18bf2e 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -759,6 +759,12 @@ static int navi10_force_clk_levels(struct smu_context *smu,
        case SMU_UCLK:
        case SMU_DCEFCLK:
        case SMU_FCLK:
+               /* There is only 2 levels for fine grained DPM */
+               if (navi10_is_support_fine_grained_dpm(smu, clk_type)) {
+                       soft_max_level = (soft_max_level >= 1 ? 1 : 0);
+                       soft_min_level = (soft_min_level >= 1 ? 1 : 0);
+               }
+
                ret = smu_get_dpm_freq_by_index(smu, clk_type, soft_min_level, &min_freq);
                if (ret)
                        return size;