Commit e4e2c8f2 authored by Huang Rui's avatar Huang Rui Committed by Alex Deucher
Browse files

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: default avatarHuang Rui <ray.huang@amd.com>
Reviewed-by: default avatarKen Wang <Qingqing.Wang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9f7aab6f

drivers/gpu/drm/amd/powerplay/hwmgr/iceland_hwmgr.c

+34 −0
Original line number Diff line number Diff line
@@ -3069,6 +3069,36 @@ static int iceland_tf_start_smc(struct pp_hwmgr *hwmgr) 
	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)

{

	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),

		"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 */

	tmp_result = iceland_start_dpm(hwmgr);

	PP_ASSERT_WITH_CODE((0 == tmp_result),

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