[PATCH 34/52] drm/amd/powerplay: add GFX per cu powergating for Baffin

[Alex Deucher <alexdeucher@gmail.com>]

From: Eric Huang <JinHuiEric.Huang@amd.com>

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
---
 .../powerplay/hwmgr/ellesmere_clockpowergating.c   | 28 ++++++++++++++++++++++
 .../powerplay/hwmgr/ellesmere_clockpowergating.h   |  1 +
 .../gpu/drm/amd/powerplay/hwmgr/ellesmere_hwmgr.c  |  5 ++++
 3 files changed, 34 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.c b/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.c
index a94f6a8..93db824 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.c
@@ -398,3 +398,31 @@ int ellesmere_phm_update_clock_gatings(struct pp_hwmgr *hwmgr,
 
 	return 0;
 }
+
+/* This function is for Baffin only for now,
+ * Powerplay will only control the static per CU Power Gating.
+ * Dynamic per CU Power Gating will be done in gfx.
+ */
+int ellesmere_phm_enable_per_cu_power_gating(struct pp_hwmgr *hwmgr, bool enable)
+{
+	struct cgs_system_info sys_info = {0};
+	uint32_t active_cus;
+	int result;
+
+	sys_info.size = sizeof(struct cgs_system_info);
+	sys_info.info_id = CGS_SYSTEM_INFO_GFX_CU_INFO;
+
+	result = cgs_query_system_info(hwmgr->device, &sys_info);
+
+	if (result)
+		return -EINVAL;
+	else
+		active_cus = sys_info.value;
+
+	if (enable)
+		return smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
+				PPSMC_MSG_GFX_CU_PG_ENABLE, active_cus);
+	else
+		return smum_send_msg_to_smc(hwmgr->smumgr,
+				PPSMC_MSG_GFX_CU_PG_DISABLE);
+}
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.h b/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.h
index a90577e..b403e11 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.h
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_clockpowergating.h
@@ -35,5 +35,6 @@ int ellesmere_phm_powergate_acp(struct pp_hwmgr *hwmgr, bool bgate);
 int ellesmere_phm_disable_clock_power_gating(struct pp_hwmgr *hwmgr);
 int ellesmere_phm_update_clock_gatings(struct pp_hwmgr *hwmgr,
 					const uint32_t *msg_id);
+int ellesmere_phm_enable_per_cu_power_gating(struct pp_hwmgr *hwmgr, bool enable);
 
 #endif /* _ELLESMERE_CLOCK_POWER_GATING_H_ */
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_hwmgr.c
index c87d5ef..152d77d 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/ellesmere_hwmgr.c
@@ -4687,6 +4687,11 @@ static const struct pp_hwmgr_func ellesmere_hwmgr_funcs = {
 	.register_internal_thermal_interrupt = ellesmere_register_internal_thermal_interrupt,
 	.check_smc_update_required_for_display_configuration = ellesmere_check_smc_update_required_for_display_configuration,
 	.check_states_equal = ellesmere_check_states_equal,
+	.get_pp_table = ellesmere_get_pp_table,
+	.set_pp_table = ellesmere_set_pp_table,
+	.force_clock_level = ellesmere_force_clock_level,
+	.print_clock_levels = ellesmere_print_clock_levels,
+	.enable_per_cu_power_gating = ellesmere_phm_enable_per_cu_power_gating,
 };
 
 int ellesemere_hwmgr_init(struct pp_hwmgr *hwmgr)
-- 
2.5.0

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