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drm/amd/powerplay: add GFX per cu powergating support through SMU/powerplay

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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>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2016-02-11 15:54:45 -05:00 committed by Alex Deucher
parent bacec8985f
commit 65f85e7d82
2 changed files with 15 additions and 1 deletions
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15
drivers/gpu/drm/amd/powerplay/amd_powerplay.c
View file

@ -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)

1
drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
View file

@ -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 {