drm/amdgpu: add mclk OD(overdrive) support for CI

The maximum OD percentage is 20.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
index 9b9be6bae61671c003c91d0fc2e6cd77f7dcbcb4..9327a610338d7a9ebe2d02d78dca49c7cd3a78df 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
@@ -6564,6 +6564,40 @@ static int ci_dpm_set_sclk_od(struct amdgpu_device *adev, uint32_t value)
        return 0;
 }
 
+static int ci_dpm_get_mclk_od(struct amdgpu_device *adev)
+{
+       struct ci_power_info *pi = ci_get_pi(adev);
+       struct ci_single_dpm_table *mclk_table = &(pi->dpm_table.mclk_table);
+       struct ci_single_dpm_table *golden_mclk_table =
+                       &(pi->golden_dpm_table.mclk_table);
+       int value;
+
+       value = (mclk_table->dpm_levels[mclk_table->count - 1].value -
+                       golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value) *
+                       100 /
+                       golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value;
+
+       return value;
+}
+
+static int ci_dpm_set_mclk_od(struct amdgpu_device *adev, uint32_t value)
+{
+       struct ci_power_info *pi = ci_get_pi(adev);
+       struct ci_ps *ps = ci_get_ps(adev->pm.dpm.requested_ps);
+       struct ci_single_dpm_table *golden_mclk_table =
+                       &(pi->golden_dpm_table.mclk_table);
+
+       if (value > 20)
+               value = 20;
+
+       ps->performance_levels[ps->performance_level_count - 1].mclk =
+                       golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value *
+                       value / 100 +
+                       golden_mclk_table->dpm_levels[golden_mclk_table->count - 1].value;
+
+       return 0;
+}
+
 const struct amd_ip_funcs ci_dpm_ip_funcs = {
        .name = "ci_dpm",
        .early_init = ci_dpm_early_init,
@@ -6602,6 +6636,8 @@ static const struct amdgpu_dpm_funcs ci_dpm_funcs = {
        .force_clock_level = ci_dpm_force_clock_level,
        .get_sclk_od = ci_dpm_get_sclk_od,
        .set_sclk_od = ci_dpm_set_sclk_od,
+       .get_mclk_od = ci_dpm_get_mclk_od,
+       .set_mclk_od = ci_dpm_set_mclk_od,
 };
 
 static void ci_dpm_set_dpm_funcs(struct amdgpu_device *adev)