linux-kernel - [PATCH v3 2/2] thermal: intel: intel_tcc_cooling: Use a model-specific bitmask for TCC offset

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Message-Id: <20240614211606.5896-3-ricardo.neri-calderon@linux.intel.com>
Date: Fri, 14 Jun 2024 14:16:06 -0700
From: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	Zhang Rui <rui.zhang@...el.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	Lukasz Luba <lukasz.luba@....com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ricardo Neri <ricardo.neri@...el.com>
Subject: [PATCH v3 2/2] thermal: intel: intel_tcc_cooling: Use a model-specific bitmask for TCC offset

The TCC offset field in the register MSR_TEMPERATURE_TARGET is not
architectural. The TCC library provides a model-specific bitmask. Use it to
determine the maximum TCC offset.

Suggested-by: Zhang Rui <rui.zhang@...el.com>
Reviewed-by: Zhang Rui <rui.zhang@...el.com>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
---
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Lukasz Luba <lukasz.luba@....com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc: linux-pm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: stable@...r.kernel.org # v6.7+
---
Changes since v2:
 * None

Changes since v1:
 * Used renamed function intel_tcc_get_offset_mask().
---
 drivers/thermal/intel/intel_tcc_cooling.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/intel/intel_tcc_cooling.c b/drivers/thermal/intel/intel_tcc_cooling.c
index 63696e7d7b3c..17110ffa80bb 100644
--- a/drivers/thermal/intel/intel_tcc_cooling.c
+++ b/drivers/thermal/intel/intel_tcc_cooling.c
@@ -20,7 +20,7 @@ static struct thermal_cooling_device *tcc_cdev;
 static int tcc_get_max_state(struct thermal_cooling_device *cdev, unsigned long
 			     *state)
 {
-	*state = 0x3f;
+	*state = intel_tcc_get_offset_mask();
 	return 0;
 }
 
-- 
2.34.1