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From 9a2ebfbb6e70cd50f79b9841a8dc048a34ea6a85 Mon Sep 17 00:00:00 2001
From: Eric Huang <JinHuiEric.Huang@amd.com>
Date: Thu, 11 Feb 2016 15:54:45 -0500
Subject: [PATCH 0940/1110] drm/amd/powerplay: add GFX per cu powergating
support through SMU/powerplay
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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>
---
drivers/gpu/drm/amd/powerplay/amd_powerplay.c | 15 ++++++++++++++-
drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 1 +
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index 9c742e0..94b7809 100644
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -267,7 +267,20 @@ static int pp_set_clockgating_state(void *handle,
static int pp_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
- return 0;
+ struct pp_hwmgr *hwmgr;
+
+ if (handle == NULL)
+ return -EINVAL;
+
+ hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+ if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
+ hwmgr->hwmgr_func->enable_per_cu_power_gating == NULL)
+ return -EINVAL;
+
+ /* Enable/disable GFX per cu powergating through SMU */
+ return hwmgr->hwmgr_func->enable_per_cu_power_gating(hwmgr,
+ state == AMD_PG_STATE_GATE ? true : false);
}
static int pp_suspend(void *handle)
diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
index e1ca36c..12285a9 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
@@ -337,6 +337,7 @@ struct pp_hwmgr_func {
int (*set_pp_table)(struct pp_hwmgr *hwmgr, const char *buf, size_t size);
int (*force_clock_level)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, int level);
int (*print_clock_levels)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, char *buf);
+ int (*enable_per_cu_power_gating)(struct pp_hwmgr *hwmgr, bool enable);
};
struct pp_table_func {
--
2.7.4
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