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drm/amd/powerplay: add deep sleep initialization 

This patch adds the deep sleep initialization at DPM, it needs send a
message to SMC to enable this feature before enable voltage controller.

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2016-07-26 15:57:07 +08:00 committed by Alex Deucher
parent 9f7aab6fd3
commit e4e2c8f29a
1 changed files with 34 additions and 0 deletions
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34
drivers/gpu/drm/amd/powerplay/hwmgr/iceland_hwmgr.c
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@ -3069,6 +3069,36 @@ static int iceland_tf_start_smc(struct pp_hwmgr *hwmgr)
return ret; return ret;
} }
/**
* Programs the Deep Sleep registers
*
* @param pHwMgr the address of the powerplay hardware manager.
* @param pInput the pointer to input data (PhwEvergreen_DisplayConfiguration)
* @param pOutput the pointer to output data (unused)
* @param pStorage the pointer to temporary storage (unused)
* @param Result the last failure code (unused)
* @return always 0
*/
static int iceland_enable_deep_sleep_master_switch(struct pp_hwmgr *hwmgr)
{
if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
PHM_PlatformCaps_SclkDeepSleep)) {
if (smum_send_msg_to_smc(hwmgr->smumgr,
PPSMC_MSG_MASTER_DeepSleep_ON) != 0)
PP_ASSERT_WITH_CODE(false,
"Attempt to enable Master Deep Sleep switch failed!",
return -EINVAL);
} else {
if (smum_send_msg_to_smc(hwmgr->smumgr,
PPSMC_MSG_MASTER_DeepSleep_OFF) != 0)
PP_ASSERT_WITH_CODE(false,
"Attempt to disable Master Deep Sleep switch failed!",
return -EINVAL);
}
return 0;
}
static int iceland_enable_dpm_tasks(struct pp_hwmgr *hwmgr) static int iceland_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
{ {
int tmp_result, result = 0; int tmp_result, result = 0;
@ -3133,6 +3163,10 @@ static int iceland_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
PP_ASSERT_WITH_CODE((0 == tmp_result), PP_ASSERT_WITH_CODE((0 == tmp_result),
"Failed to enable SCLK control!", return tmp_result); "Failed to enable SCLK control!", return tmp_result);
tmp_result = iceland_enable_deep_sleep_master_switch(hwmgr);
PP_ASSERT_WITH_CODE((tmp_result == 0),
"Failed to enable deep sleep!", return tmp_result);
/* enable DPM */ /* enable DPM */
tmp_result = iceland_start_dpm(hwmgr); tmp_result = iceland_start_dpm(hwmgr);
PP_ASSERT_WITH_CODE((0 == tmp_result), PP_ASSERT_WITH_CODE((0 == tmp_result),