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drm/amd/powerplay: refine the logic of whether need to update power state. 

Better handle power state changes.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
This commit is contained in:
Rex Zhu 2015-11-04 14:56:56 +08:00 committed by Alex Deucher
parent e829ecdb15
commit f4caf3e584
2 changed files with 11 additions and 3 deletions
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13
drivers/gpu/drm/amd/powerplay/eventmgr/psm.c
View File

@ -86,9 +86,10 @@ int psm_set_performance_states(struct pp_eventmgr *eventmgr, unsigned long *stat
int psm_adjust_power_state_dynamic(struct pp_eventmgr *eventmgr, bool skip)
{
const struct pp_power_state *pcurrent;
struct pp_power_state *requested;
struct pp_power_state *pcurrent;
struct pp_power_state *requested;
struct pp_hwmgr *hwmgr;
bool equal;
if (skip)
return 0;
@ -97,7 +98,13 @@ int psm_adjust_power_state_dynamic(struct pp_eventmgr *eventmgr, bool skip)
pcurrent = hwmgr->current_ps;
requested = hwmgr->request_ps;
if ((pcurrent != NULL || requested != NULL) && (pcurrent != requested)) {
if (requested == NULL)
return 0;
if (pcurrent == NULL || (0 != phm_check_states_equal(hwmgr, &pcurrent->hardware, &requested->hardware, &equal)))
equal = false;
if (!equal || phm_check_smc_update_required_for_display_configuration(hwmgr)) {
phm_apply_state_adjust_rules(hwmgr, requested, pcurrent);
phm_set_power_state(hwmgr, &pcurrent->hardware, &requested->hardware);
hwmgr->current_ps = requested;

1
drivers/gpu/drm/amd/powerplay/eventmgr/psm.h
View File

@ -25,6 +25,7 @@
#include "eventmanagement.h"
#include "eventmanager.h"
#include "power_state.h"
#include "hardwaremanager.h"
int psm_get_ui_state(struct pp_eventmgr *eventmgr, enum PP_StateUILabel ui_label, unsigned long *state_id);