drm/amd/powerplay: add new Fiji function for not setting same ps.

Add comparison function used by powerplay to determine which
power state to select.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.c
index 51dedf84623c..a21f58e10d19 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/fiji_hwmgr.c
@@ -5195,6 +5195,67 @@ static int fiji_print_clock_levels(struct pp_hwmgr *hwmgr,
         return size;
 }
 
+static inline bool fiji_are_power_levels_equal(const struct fiji_performance_level *pl1,
+                                                           const struct fiji_performance_level *pl2)
+{
+        return ((pl1->memory_clock == pl2->memory_clock) &&
+                  (pl1->engine_clock == pl2->engine_clock) &&
+                  (pl1->pcie_gen == pl2->pcie_gen) &&
+                  (pl1->pcie_lane == pl2->pcie_lane));
+}
+
+int fiji_check_states_equal(struct pp_hwmgr *hwmgr, const struct pp_hw_power_state *pstate1, const struct pp_hw_power_state *pstate2, bool *equal)
+{
+        const struct fiji_power_state *psa = cast_const_phw_fiji_power_state(pstate1);
+        const struct fiji_power_state *psb = cast_const_phw_fiji_power_state(pstate2);
+        int i;
+
+        if (equal == NULL || psa == NULL || psb == NULL)
+                return -EINVAL;
+
+        /* If the two states don't even have the same number of performance levels they cannot be the same state. */
+        if (psa->performance_level_count != psb->performance_level_count) {
+                *equal = false;
+                return 0;
+        }
+
+        for (i = 0; i < psa->performance_level_count; i++) {
+                if (!fiji_are_power_levels_equal(&(psa->performance_levels[i]), &(psb->performance_levels[i]))) {
+                        /* If we have found even one performance level pair that is different the states are different. */
+                        *equal = false;
+                        return 0;
+                }
+        }
+
+        /* If all performance levels are the same try to use the UVD clocks to break the tie.*/
+        *equal = ((psa->uvd_clks.vclk == psb->uvd_clks.vclk) && (psa->uvd_clks.dclk == psb->uvd_clks.dclk));
+        *equal &= ((psa->vce_clks.evclk == psb->vce_clks.evclk) && (psa->vce_clks.ecclk == psb->vce_clks.ecclk));
+        *equal &= (psa->sclk_threshold == psb->sclk_threshold);
+        *equal &= (psa->acp_clk == psb->acp_clk);
+
+        return 0;
+}
+
+bool fiji_check_smc_update_required_for_display_configuration(struct pp_hwmgr *hwmgr)
+{
+        struct fiji_hwmgr *data = (struct fiji_hwmgr *)(hwmgr->backend);
+        bool is_update_required = false;
+        struct cgs_display_info info = {0,0,NULL};
+
+        cgs_get_active_displays_info(hwmgr->device, &info);
+
+        if (data->display_timing.num_existing_displays != info.display_count)
+                is_update_required = true;
+/* TO DO NEED TO GET DEEP SLEEP CLOCK FROM DAL
+        if (phm_cap_enabled(hwmgr->hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_SclkDeepSleep)) {
+                cgs_get_min_clock_settings(hwmgr->device, &min_clocks);
+                if(min_clocks.engineClockInSR != data->display_timing.minClockInSR)
+                        is_update_required = true;
+*/
+        return is_update_required;
+}
+
+
 static const struct pp_hwmgr_func fiji_hwmgr_funcs = {
         .backend_init = &fiji_hwmgr_backend_init,
         .backend_fini = &tonga_hwmgr_backend_fini,
@@ -5230,6 +5291,8 @@ static const struct pp_hwmgr_func fiji_hwmgr_funcs = {
         .register_internal_thermal_interrupt = fiji_register_internal_thermal_interrupt,
         .set_fan_control_mode = fiji_set_fan_control_mode,
         .get_fan_control_mode = fiji_get_fan_control_mode,
+        .check_states_equal = fiji_check_states_equal,
+        .check_smc_update_required_for_display_configuration = fiji_check_smc_update_required_for_display_configuration,
         .get_pp_table = fiji_get_pp_table,
         .set_pp_table = fiji_set_pp_table,
         .force_clock_level = fiji_force_clock_level,