[PATCH v7 29/29] thermal/drivers/intel: Use generic thermal_zone_get_trip() function

From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: daniel.lezcano@linaro.org, rafael@kernel.org
Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	rui.zhang@intel.com, "Raju Rangoju" <rajur@chelsio.com>,
	"David S. Miller" <davem@davemloft.net>,
	"Eric Dumazet" <edumazet@google.com>,
	"Jakub Kicinski" <kuba@kernel.org>,
	"Paolo Abeni" <pabeni@redhat.com>,
	"Peter Kaestle" <peter@piie.net>,
	"Hans de Goede" <hdegoede@redhat.com>,
	"Mark Gross" <markgross@kernel.org>,
	"Miquel Raynal" <miquel.raynal@bootlin.com>,
	"Amit Kucheria" <amitk@kernel.org>,
	"Nicolas Saenz Julienne" <nsaenz@kernel.org>,
	"Broadcom Kernel Team" <bcm-kernel-feedback-list@broadcom.com>,
	"Florian Fainelli" <f.fainelli@gmail.com>,
	"Ray Jui" <rjui@broadcom.com>,
	"Scott Branden" <sbranden@broadcom.com>,
	"Support Opensource" <support.opensource@diasemi.com>,
	"Lukasz Luba" <lukasz.luba@arm.com>,
	"Shawn Guo" <shawnguo@kernel.org>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	"NXP Linux Team" <linux-imx@nxp.com>,
	"Thara Gopinath" <thara.gopinath@linaro.org>,
	"Andy Gross" <agross@kernel.org>,
	"Bjorn Andersson" <bjorn.andersson@linaro.org>,
	"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
	"Bartlomiej Zolnierkiewicz" <bzolnier@gmail.com>,
	"Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>,
	"Alim Akhtar" <alim.akhtar@samsung.com>,
	"Thierry Reding" <thierry.reding@gmail.com>,
	"Jonathan Hunter" <jonathanh@nvidia.com>,
	"Eduardo Valentin" <edubezval@gmail.com>,
	Keerthy <j-keerthy@ti.com>,
	"Kunihiko Hayashi" <hayashi.kunihiko@socionext.com>,
	"Masami Hiramatsu" <mhiramat@kernel.org>,
	"Antoine Tenart" <atenart@kernel.org>,
	"Srinivas Pandruvada" <srinivas.pandruvada@linux.intel.com>,
	"Dmitry Osipenko" <digetx@gmail.com>,
	netdev@vger.kernel.org, platform-driver-x86@vger.kernel.org,
	linux-rpi-kernel@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org,
	linux-omap@vger.kernel.org, "Jiang Jian" <jiangjian@cdjrlc.com>
Subject: [PATCH v7 29/29] thermal/drivers/intel: Use generic thermal_zone_get_trip() function
Date: Wed, 28 Sep 2022 23:00:59 +0200	[thread overview]
Message-ID: <20220928210059.891387-30-daniel.lezcano@linaro.org> (raw)
In-Reply-To: <20220928210059.891387-1-daniel.lezcano@linaro.org>

The thermal framework gives the possibility to register the trip
points with the thermal zone. When that is done, no get_trip_* ops are
needed and they can be removed.

Convert ops content logic into generic trip points and register them with the
thermal zone.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 drivers/thermal/intel/x86_pkg_temp_thermal.c | 120 +++++++++++--------
 1 file changed, 67 insertions(+), 53 deletions(-)

diff --git a/drivers/thermal/intel/x86_pkg_temp_thermal.c b/drivers/thermal/intel/x86_pkg_temp_thermal.c
index a0e234fce71a..40a9355207e7 100644
--- a/drivers/thermal/intel/x86_pkg_temp_thermal.c
+++ b/drivers/thermal/intel/x86_pkg_temp_thermal.c
@@ -53,6 +53,7 @@ struct zone_device {
 	u32				msr_pkg_therm_high;
 	struct delayed_work		work;
 	struct thermal_zone_device	*tzone;
+	struct thermal_trip		*trips;
 	struct cpumask			cpumask;
 };
 
@@ -138,40 +139,6 @@ static int sys_get_curr_temp(struct thermal_zone_device *tzd, int *temp)
 	return -EINVAL;
 }
 
-static int sys_get_trip_temp(struct thermal_zone_device *tzd,
-			     int trip, int *temp)
-{
-	struct zone_device *zonedev = tzd->devdata;
-	unsigned long thres_reg_value;
-	u32 mask, shift, eax, edx;
-	int ret;
-
-	if (trip >= MAX_NUMBER_OF_TRIPS)
-		return -EINVAL;
-
-	if (trip) {
-		mask = THERM_MASK_THRESHOLD1;
-		shift = THERM_SHIFT_THRESHOLD1;
-	} else {
-		mask = THERM_MASK_THRESHOLD0;
-		shift = THERM_SHIFT_THRESHOLD0;
-	}
-
-	ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
-			   &eax, &edx);
-	if (ret < 0)
-		return ret;
-
-	thres_reg_value = (eax & mask) >> shift;
-	if (thres_reg_value)
-		*temp = zonedev->tj_max - thres_reg_value * 1000;
-	else
-		*temp = THERMAL_TEMP_INVALID;
-	pr_debug("sys_get_trip_temp %d\n", *temp);
-
-	return 0;
-}
-
 static int
 sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
 {
@@ -212,18 +179,9 @@ sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp)
 			l, h);
 }
 
-static int sys_get_trip_type(struct thermal_zone_device *thermal, int trip,
-			     enum thermal_trip_type *type)
-{
-	*type = THERMAL_TRIP_PASSIVE;
-	return 0;
-}
-
 /* Thermal zone callback registry */
 static struct thermal_zone_device_ops tzone_ops = {
 	.get_temp = sys_get_curr_temp,
-	.get_trip_temp = sys_get_trip_temp,
-	.get_trip_type = sys_get_trip_type,
 	.set_trip_temp = sys_set_trip_temp,
 };
 
@@ -328,6 +286,48 @@ static int pkg_thermal_notify(u64 msr_val)
 	return 0;
 }
 
+static struct thermal_trip *pkg_temp_thermal_trips_init(int cpu, int tj_max, int num_trips)
+{
+	struct thermal_trip *trips;
+	unsigned long thres_reg_value;
+	u32 mask, shift, eax, edx;
+	int ret, i;
+
+	trips = kzalloc(sizeof(*trips) * num_trips, GFP_KERNEL);
+	if (!trips)
+		return ERR_PTR(-ENOMEM);
+	
+	for (i = 0; i < num_trips; i++) {
+
+		if (i) {
+			mask = THERM_MASK_THRESHOLD1;
+			shift = THERM_SHIFT_THRESHOLD1;
+		} else {
+			mask = THERM_MASK_THRESHOLD0;
+			shift = THERM_SHIFT_THRESHOLD0;
+		}
+
+		ret = rdmsr_on_cpu(cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT,
+				   &eax, &edx);
+		if (ret < 0) {
+			kfree(trips);
+			return ERR_PTR(ret);
+		}
+
+		thres_reg_value = (eax & mask) >> shift;
+
+		trips[i].temperature = thres_reg_value ?
+			tj_max - thres_reg_value * 1000 : THERMAL_TEMP_INVALID;
+
+		trips[i].type = THERMAL_TRIP_PASSIVE;
+		
+		pr_debug("%s: cpu=%d, trip=%d, temp=%d\n",
+			 __func__, cpu, i, trips[i].temperature);
+	}
+
+	return trips;
+}
+
 static int pkg_temp_thermal_device_add(unsigned int cpu)
 {
 	int id = topology_logical_die_id(cpu);
@@ -353,24 +353,27 @@ static int pkg_temp_thermal_device_add(unsigned int cpu)
 	if (!zonedev)
 		return -ENOMEM;
 
+	zonedev->trips = pkg_temp_thermal_trips_init(cpu, tj_max, thres_count);
+	if (IS_ERR(zonedev->trips)) {
+		err = PTR_ERR(zonedev->trips);
+		goto out_kfree_zonedev;
+	}
+	
 	INIT_DELAYED_WORK(&zonedev->work, pkg_temp_thermal_threshold_work_fn);
 	zonedev->cpu = cpu;
 	zonedev->tj_max = tj_max;
-	zonedev->tzone = thermal_zone_device_register("x86_pkg_temp",
-			thres_count,
+	zonedev->tzone = thermal_zone_device_register_with_trips("x86_pkg_temp",
+			zonedev->trips, thres_count,
 			(thres_count == MAX_NUMBER_OF_TRIPS) ? 0x03 : 0x01,
 			zonedev, &tzone_ops, &pkg_temp_tz_params, 0, 0);
 	if (IS_ERR(zonedev->tzone)) {
 		err = PTR_ERR(zonedev->tzone);
-		kfree(zonedev);
-		return err;
+		goto out_kfree_trips;
 	}
 	err = thermal_zone_device_enable(zonedev->tzone);
-	if (err) {
-		thermal_zone_device_unregister(zonedev->tzone);
-		kfree(zonedev);
-		return err;
-	}
+	if (err)
+		goto out_unregister_tz;
+
 	/* Store MSR value for package thermal interrupt, to restore at exit */
 	rdmsr(MSR_IA32_PACKAGE_THERM_INTERRUPT, zonedev->msr_pkg_therm_low,
 	      zonedev->msr_pkg_therm_high);
@@ -379,7 +382,16 @@ static int pkg_temp_thermal_device_add(unsigned int cpu)
 	raw_spin_lock_irq(&pkg_temp_lock);
 	zones[id] = zonedev;
 	raw_spin_unlock_irq(&pkg_temp_lock);
+
 	return 0;
+
+out_unregister_tz:	
+	thermal_zone_device_unregister(zonedev->tzone);
+out_kfree_trips:
+	kfree(zonedev->trips);
+out_kfree_zonedev:
+	kfree(zonedev);
+	return err;
 }
 
 static int pkg_thermal_cpu_offline(unsigned int cpu)
@@ -463,8 +475,10 @@ static int pkg_thermal_cpu_offline(unsigned int cpu)
 	raw_spin_unlock_irq(&pkg_temp_lock);
 
 	/* Final cleanup if this is the last cpu */
-	if (lastcpu)
+	if (lastcpu) {
+		kfree(zonedev->trips);
 		kfree(zonedev);
+	}
 	return 0;
 }
 
-- 
2.34.1

