linux-kernel - [PATCH v1 1/5] platform/x86:intel/pmc: Enable SSRAM support for Lunar Lake

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Message-ID: <20250621210529.237964-2-xi.pardee@linux.intel.com>
Date: Sat, 21 Jun 2025 14:05:21 -0700
From: Xi Pardee <xi.pardee@...ux.intel.com>
To: xi.pardee@...ux.intel.com,
	irenic.rajneesh@...il.com,
	david.e.box@...ux.intel.com,
	hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com,
	platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org
Subject: [PATCH v1 1/5] platform/x86:intel/pmc: Enable SSRAM support for Lunar Lake

Enable Lunar Lake platforms to achieve PMC information from
Intel PMC SSRAM Telemetry driver and substate requirements data
from telemetry region.

Signed-off-by: Xi Pardee <xi.pardee@...ux.intel.com>
---
 drivers/platform/x86/intel/pmc/lnl.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/platform/x86/intel/pmc/lnl.c b/drivers/platform/x86/intel/pmc/lnl.c
index da513c234714b..e08a77c778c2c 100644
--- a/drivers/platform/x86/intel/pmc/lnl.c
+++ b/drivers/platform/x86/intel/pmc/lnl.c
@@ -13,6 +13,10 @@
 
 #include "core.h"
 
+#define SOCM_LPM_REQ_GUID	0x15099748
+
+static const u8 LNL_LPM_REG_INDEX[] = {0, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 20};
+
 static const struct pmc_bit_map lnl_ltr_show_map[] = {
 	{"SOUTHPORT_A",		CNP_PMC_LTR_SPA},
 	{"SOUTHPORT_B",		CNP_PMC_LTR_SPB},
@@ -528,6 +532,16 @@ static const struct pmc_reg_map lnl_socm_reg_map = {
 	.lpm_live_status_offset = MTL_LPM_LIVE_STATUS_OFFSET,
 	.s0ix_blocker_maps = lnl_blk_maps,
 	.s0ix_blocker_offset = LNL_S0IX_BLOCKER_OFFSET,
+	.lpm_reg_index = LNL_LPM_REG_INDEX,
+};
+
+static struct pmc_info lnl_pmc_info_list[] = {
+	{
+		.guid	= SOCM_LPM_REQ_GUID,
+		.devid	= PMC_DEVID_LNL_SOCM,
+		.map	= &lnl_socm_reg_map,
+	},
+	{}
 };
 
 #define LNL_NPU_PCI_DEV		0x643e
@@ -557,6 +571,8 @@ static int lnl_core_init(struct pmc_dev *pmcdev, struct pmc_dev_info *pmc_dev_in
 }
 
 struct pmc_dev_info lnl_pmc_dev = {
+	.pci_func = 2,
+	.regmap_list = lnl_pmc_info_list,
 	.map = &lnl_socm_reg_map,
 	.suspend = cnl_suspend,
 	.resume = lnl_resume,
-- 
2.43.0