Change-Id: Ib774eeff0f3f19a5f593668dd3329f5cfd111eaa
Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
drivers/gpu/drm/amd/amdgpu/ci_dpm.c | 51 +++++++++++++++++++++++++++++++++++++
1 file changed, 51 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
index fd2fe85..a7954eb 100644
--- a/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/ci_dpm.c
@@ -6100,6 +6100,56 @@ static void ci_dpm_print_power_state(struct amdgpu_device *adev,
amdgpu_dpm_print_ps_status(adev, rps);
}
+static inline bool ci_are_power_levels_equal(const struct ci_pl *ci_cpl1,
+ const struct ci_pl *ci_cpl2)
+{
+ return ((ci_cpl1->mclk == ci_cpl2->mclk) &&
+ (ci_cpl1->sclk == ci_cpl2->sclk) &&
+ (ci_cpl1->pcie_gen == ci_cpl2->pcie_gen) &&
+ (ci_cpl1->pcie_lane == ci_cpl2->pcie_lane));
+}
+
+static int ci_check_state_equal(struct amdgpu_device *adev,
+ struct amdgpu_ps *cps,
+ struct amdgpu_ps *rps,
+ bool *equal)
+{
+ struct ci_ps *ci_cps;
+ struct ci_ps *ci_rps;
+ int i;
+
+ if (adev == NULL || cps == NULL || rps == NULL || equal == NULL)
+ return -EINVAL;
+
+ ci_cps = ci_get_ps(cps);
+ ci_rps = ci_get_ps(rps);
+
+ if (ci_cps == NULL) {
+ *equal = false;
+ return 0;
+ }
+
+ if (ci_cps->performance_level_count != ci_rps->performance_level_count) {
+
+ *equal = false;
+ return 0;
+ }
+
+ for (i = 0; i < ci_cps->performance_level_count; i++) {
+ if (!ci_are_power_levels_equal(&(ci_cps->performance_levels[i]),
+ &(ci_rps->performance_levels[i]))) {
+ *equal = false;
+ return 0;
+ }
+ }
+
+ /* If all performance levels are the same try to use the UVD clocks to break the tie.*/
+ *equal = ((cps->vclk == rps->vclk) && (cps->dclk == rps->dclk));
+ *equal &= ((cps->evclk == rps->evclk) && (cps->ecclk == rps->ecclk));
+
+ return 0;
+}
+
static u32 ci_dpm_get_sclk(struct amdgpu_device *adev, bool low)
{
struct ci_power_info *pi = ci_get_pi(adev);
@@ -6650,6 +6700,7 @@ static const struct amdgpu_dpm_funcs ci_dpm_funcs = {
.set_sclk_od = ci_dpm_set_sclk_od,
.get_mclk_od = ci_dpm_get_mclk_od,
.set_mclk_od = ci_dpm_set_mclk_od,
+ .check_state_equal = ci_check_state_equal,
};
static void ci_dpm_set_dpm_funcs(struct amdgpu_device *adev)
--
1.9.1
