linux-kernel - [PATCH 1/6] platform/x86/intel/tpmi: Add support for performance limit reasons

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Date: Mon, 27 May 2024 16:29:33 +0300
From: Tero Kristo <tero.kristo@...ux.intel.com>
To: srinivas.pandruvada@...ux.intel.com,
	ilpo.jarvinen@...ux.intel.com,
	hdegoede@...hat.com
Cc: linux-kernel@...r.kernel.org,
	platform-driver-x86@...r.kernel.org,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH 1/6] platform/x86/intel/tpmi: Add support for performance limit reasons

Add TPMI ID 0x0C (Perf Limit Reasons) to the list of supported TPMI IDs.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Signed-off-by: Tero Kristo <tero.kristo@...ux.intel.com>
---
 drivers/platform/x86/intel/tpmi.c | 2 ++
 include/linux/intel_tpmi.h        | 1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/platform/x86/intel/tpmi.c b/drivers/platform/x86/intel/tpmi.c
index 6c0cbccd80bb..c2ef2cd587ba 100644
--- a/drivers/platform/x86/intel/tpmi.c
+++ b/drivers/platform/x86/intel/tpmi.c
@@ -577,6 +577,8 @@ static const char *intel_tpmi_name(enum intel_tpmi_id id)
 		return "uncore";
 	case TPMI_ID_SST:
 		return "sst";
+	case TPMI_ID_PLR:
+		return "plr";
 	default:
 		return NULL;
 	}
diff --git a/include/linux/intel_tpmi.h b/include/linux/intel_tpmi.h
index 1e880cb0f454..a88ac937d2c2 100644
--- a/include/linux/intel_tpmi.h
+++ b/include/linux/intel_tpmi.h
@@ -21,6 +21,7 @@ enum intel_tpmi_id {
 	TPMI_ID_PEM = 1,	/* Power and Perf excursion Monitor */
 	TPMI_ID_UNCORE = 2,	/* Uncore Frequency Scaling */
 	TPMI_ID_SST = 5,	/* Speed Select Technology */
+	TPMI_ID_PLR = 0xc,	/* Performance Limit Reasons */
 	TPMI_CONTROL_ID = 0x80,	/* Special ID for getting feature status */
 	TPMI_INFO_ID = 0x81,	/* Special ID for PCI BDF and Package ID information */
 };
-- 
2.43.1