Unverified Commit 932ca9b7 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Ilpo Järvinen
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platform/x86: ISST: Optimize suspend/resume callbacks 



If SST-CP or SST-PP is not supported then don't store configuration
during suspend callback and restore during resume callback.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://patch.msgid.link/20260107061649.1634737-1-srinivas.pandruvada@linux.intel.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 69cd1ca4

drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c

+17 −0
Original line number Diff line number Diff line
@@ -1721,6 +1721,9 @@ void tpmi_sst_dev_remove(struct auxiliary_device *auxdev) 
}

EXPORT_SYMBOL_NS_GPL(tpmi_sst_dev_remove, "INTEL_TPMI_SST");



#define SST_PP_CAP_CP_ENABLE	BIT(0)

#define SST_PP_CAP_PP_ENABLE	BIT(1)



void tpmi_sst_dev_suspend(struct auxiliary_device *auxdev)

{

	struct tpmi_sst_struct *tpmi_sst = auxiliary_get_drvdata(auxdev);
@@ -1741,6 +1744,9 @@ void tpmi_sst_dev_suspend(struct auxiliary_device *auxdev) 
		if (!pd_info || !pd_info->sst_base)

			continue;



		if (!(pd_info->sst_header.cap_mask & SST_PP_CAP_CP_ENABLE))

			goto process_pp_suspend;



		cp_base = pd_info->sst_base + pd_info->sst_header.cp_offset;

		pd_info->saved_sst_cp_control = readq(cp_base + SST_CP_CONTROL_OFFSET);

		memcpy_fromio(pd_info->saved_clos_configs, cp_base + SST_CLOS_CONFIG_0_OFFSET,
@@ -1748,6 +1754,10 @@ void tpmi_sst_dev_suspend(struct auxiliary_device *auxdev) 
		memcpy_fromio(pd_info->saved_clos_assocs, cp_base + SST_CLOS_ASSOC_0_OFFSET,

			      sizeof(pd_info->saved_clos_assocs));



process_pp_suspend:

		if (!(pd_info->sst_header.cap_mask & SST_PP_CAP_PP_ENABLE))

			continue;



		pd_info->saved_pp_control = readq(pd_info->sst_base +

						  pd_info->sst_header.pp_offset +

						  SST_PP_CONTROL_OFFSET);
@@ -1775,6 +1785,9 @@ void tpmi_sst_dev_resume(struct auxiliary_device *auxdev) 
		if (!pd_info || !pd_info->sst_base)

			continue;



		if (!(pd_info->sst_header.cap_mask & SST_PP_CAP_CP_ENABLE))

			goto process_pp_resume;



		cp_base = pd_info->sst_base + pd_info->sst_header.cp_offset;

		writeq(pd_info->saved_sst_cp_control, cp_base + SST_CP_CONTROL_OFFSET);

		memcpy_toio(cp_base + SST_CLOS_CONFIG_0_OFFSET, pd_info->saved_clos_configs,
@@ -1782,6 +1795,10 @@ void tpmi_sst_dev_resume(struct auxiliary_device *auxdev) 
		memcpy_toio(cp_base + SST_CLOS_ASSOC_0_OFFSET, pd_info->saved_clos_assocs,

			    sizeof(pd_info->saved_clos_assocs));



process_pp_resume:

		if (!(pd_info->sst_header.cap_mask & SST_PP_CAP_PP_ENABLE))

			continue;



		writeq(pd_info->saved_pp_control, power_domain_info->sst_base +

		       pd_info->sst_header.pp_offset + SST_PP_CONTROL_OFFSET);

	}