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

[Wang, Kevin(Yang)]

Reviewed-by: Kevin Wang <kevin1.wang at amd.com>

________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Evan Quan <evan.quan at amd.com>
Sent: Thursday, November 14, 2019 5:07 PM
To: amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>
Cc: Quan, Evan <Evan.Quan at amd.com>
Subject: [PATCH] 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.

Change-Id: I32f936636f27eb8d8d9002bedd701f2bb0d3060a
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
index c4f84627cfd9..0bbe3412d9b5 100644
--- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c
@@ -823,6 +823,12 @@ 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;
--
2.24.0

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