diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/818-thermal-0002-thermal-qoriq-Add-device-cooling-support.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/818-thermal-0002-thermal-qoriq-Add-device-cooling-support.patch | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/target/linux/layerscape/patches-5.4/818-thermal-0002-thermal-qoriq-Add-device-cooling-support.patch b/target/linux/layerscape/patches-5.4/818-thermal-0002-thermal-qoriq-Add-device-cooling-support.patch deleted file mode 100644 index 4777ce939c..0000000000 --- a/target/linux/layerscape/patches-5.4/818-thermal-0002-thermal-qoriq-Add-device-cooling-support.patch +++ /dev/null @@ -1,145 +0,0 @@ -From 0a5d1b571ba5bca9c6737572ea4c8b1ad896c3fc Mon Sep 17 00:00:00 2001 -From: Anson Huang <Anson.Huang@nxp.com> -Date: Wed, 7 Aug 2019 13:24:26 +0800 -Subject: [PATCH] thermal: qoriq: Add device cooling support - -Register device cooling for first thermal zone manually, when -temperature exceeds passive trip, system wide cooling notification -will be triggered. - -Signed-off-by: Anson Huang <Anson.Huang@nxp.com> ---- - drivers/thermal/qoriq_thermal.c | 80 ++++++++++++++++++++++++++++++++++++++++- - 1 file changed, 79 insertions(+), 1 deletion(-) - ---- a/drivers/thermal/qoriq_thermal.c -+++ b/drivers/thermal/qoriq_thermal.c -@@ -3,6 +3,7 @@ - // Copyright 2016 Freescale Semiconductor, Inc. - - #include <linux/clk.h> -+#include <linux/device_cooling.h> - #include <linux/module.h> - #include <linux/platform_device.h> - #include <linux/err.h> -@@ -14,6 +15,7 @@ - #include "thermal_core.h" - - #define SITES_MAX 16 -+#define TMU_TEMP_PASSIVE_COOL_DELTA 10000 - - /* - * QorIQ TMU Registers -@@ -69,6 +71,9 @@ struct qoriq_sensor { - struct thermal_zone_device *tzd; - struct qoriq_tmu_data *qdata; - int id; -+ int temp_passive; -+ int temp_critical; -+ struct thermal_cooling_device *cdev; - }; - - struct qoriq_tmu_data { -@@ -78,6 +83,12 @@ struct qoriq_tmu_data { - struct qoriq_sensor *sensor[SITES_MAX]; - }; - -+enum tmu_trip { -+ TMU_TRIP_PASSIVE, -+ TMU_TRIP_CRITICAL, -+ TMU_TRIP_NUM, -+}; -+ - static void tmu_write(struct qoriq_tmu_data *p, u32 val, void __iomem *addr) - { - if (p->little_endian) -@@ -106,14 +117,51 @@ static int tmu_get_temp(void *p, int *te - return 0; - } - -+static int tmu_get_trend(void *p, int trip, enum thermal_trend *trend) -+{ -+ struct qoriq_sensor *qsensor = p; -+ int trip_temp; -+ -+ if (!qsensor->tzd) -+ return 0; -+ -+ trip_temp = (trip == TMU_TRIP_PASSIVE) ? qsensor->temp_passive : -+ qsensor->temp_critical; -+ -+ if (qsensor->tzd->temperature >= -+ (trip_temp - TMU_TEMP_PASSIVE_COOL_DELTA)) -+ *trend = THERMAL_TREND_RAISE_FULL; -+ else -+ *trend = THERMAL_TREND_DROP_FULL; -+ -+ return 0; -+} -+ -+static int tmu_set_trip_temp(void *p, int trip, -+ int temp) -+{ -+ struct qoriq_sensor *qsensor = p; -+ -+ if (trip == TMU_TRIP_CRITICAL) -+ qsensor->temp_critical = temp; -+ -+ if (trip == TMU_TRIP_PASSIVE) -+ qsensor->temp_passive = temp; -+ -+ return 0; -+} -+ - static const struct thermal_zone_of_device_ops tmu_tz_ops = { - .get_temp = tmu_get_temp, -+ .get_trend = tmu_get_trend, -+ .set_trip_temp = tmu_set_trip_temp, - }; - - static int qoriq_tmu_register_tmu_zone(struct platform_device *pdev) - { - struct qoriq_tmu_data *qdata = platform_get_drvdata(pdev); -- int id, sites = 0; -+ const struct thermal_trip *trip; -+ int id, sites = 0, ret; - - for (id = 0; id < SITES_MAX; id++) { - qdata->sensor[id] = devm_kzalloc(&pdev->dev, -@@ -132,6 +180,36 @@ static int qoriq_tmu_register_tmu_zone(s - return PTR_ERR(qdata->sensor[id]->tzd); - } - -+ /* first thermal zone takes care of system-wide device cooling */ -+ if (id == 0) { -+ qdata->sensor[id]->cdev = devfreq_cooling_register(); -+ if (IS_ERR(qdata->sensor[id]->cdev)) { -+ ret = PTR_ERR(qdata->sensor[id]->cdev); -+ pr_err("failed to register devfreq cooling device: %d\n", -+ ret); -+ return ret; -+ } -+ -+ ret = thermal_zone_bind_cooling_device(qdata->sensor[id]->tzd, -+ TMU_TRIP_PASSIVE, -+ qdata->sensor[id]->cdev, -+ THERMAL_NO_LIMIT, -+ THERMAL_NO_LIMIT, -+ THERMAL_WEIGHT_DEFAULT); -+ if (ret) { -+ pr_err("binding zone %s with cdev %s failed:%d\n", -+ qdata->sensor[id]->tzd->type, -+ qdata->sensor[id]->cdev->type, -+ ret); -+ devfreq_cooling_unregister(qdata->sensor[id]->cdev); -+ return ret; -+ } -+ -+ trip = of_thermal_get_trip_points(qdata->sensor[id]->tzd); -+ qdata->sensor[id]->temp_passive = trip[0].temperature; -+ qdata->sensor[id]->temp_critical = trip[1].temperature; -+ } -+ - sites |= 0x1 << (15 - id); - } - |