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Wysocki" To: Linux PM Cc: LKML , "Rafael J. Wysocki" , Lukasz Luba , Daniel Lezcano , Srinivas Pandruvada , Zhang Rui , Shawn Guo , Pengutronix Kernel Team , Thara Gopinath , Thierry Reding , Jonathan Hunter , linux-wireless@vger.kernel.org, linux-tegra@vger.kernel.org, Miri Korenblit Subject: [PATCH v1 04/14] thermal: trip: Pass trip pointer to .set_trip_temp() thermal zone callback Date: Mon, 17 Jun 2024 19:56:52 +0200 Message-ID: <2174635.OBFZWjSADL@kreacher> In-Reply-To: <8409966.T7Z3S40VBb@kreacher> References: <8409966.T7Z3S40VBb@kreacher> Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrfedvhedguddvfecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopeduhedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehrrghfrggvlheskhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopegurghnihgvlhdrlhgv iigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtohepshhrihhnihhvrghsrdhprghnughruhhvrggurgeslhhinhhugidrihhnthgvlhdrtghomh X-DCC--Metrics: v370.home.net.pl 1024; Body=15 Fuz1=15 Fuz2=15 From: Rafael J. Wysocki Out of several drivers implementing the .set_trip_temp() thermal zone operation, two don't actually use the trip ID argument passed to it, two call __thermal_zone_get_trip() to get a struct thermal_trip corresponding to the given trip ID, and the other use the trip ID as an index into their own data structures with the assumption that it will always match the ordering of entries in the trips table passed to the core during thermal zone registration, which is fragile and not really guaranteed. Even though the trip IDs used by core are in fact their indices in the trips table passed to it by the thermal zone creator, that is purely a matter of convenience and should not be relied on for correctness. For this reason, modify trip_point_temp_store() to pass a (const) trip pointer to .set_trip_temp() and adjust the drivers implementing it accordingly. This helps to simplify the drivers invoking __thermal_zone_get_trip() from their .set_trip_temp() callback functions because they will not need to do it now and the other drivers can store their internal trip indices in the priv field in struct thermal_trip and their .set_trip_temp() callback functions can get those indices from there. The intel_quark_dts thermal driver can instead use the trip type to determine the requisite trip index. Signed-off-by: Rafael J. Wysocki --- drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 2 drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c | 8 +-- drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c | 3 - drivers/thermal/intel/intel_quark_dts_thermal.c | 26 +++++++--- drivers/thermal/intel/intel_soc_dts_iosf.c | 15 +++-- drivers/thermal/intel/x86_pkg_temp_thermal.c | 9 ++- drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 10 +-- drivers/thermal/tegra/soctherm.c | 14 +---- drivers/thermal/thermal_sysfs.c | 2 include/linux/thermal.h | 3 - 10 files changed, 54 insertions(+), 38 deletions(-) Index: linux-pm/drivers/thermal/thermal_sysfs.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_sysfs.c +++ linux-pm/drivers/thermal/thermal_sysfs.c @@ -113,7 +113,7 @@ trip_point_temp_store(struct device *dev if (temp != trip->temperature) { if (tz->ops.set_trip_temp) { - ret = tz->ops.set_trip_temp(tz, trip_id, temp); + ret = tz->ops.set_trip_temp(tz, trip, temp); if (ret) goto unlock; } Index: linux-pm/include/linux/thermal.h =================================================================== --- linux-pm.orig/include/linux/thermal.h +++ linux-pm/include/linux/thermal.h @@ -93,7 +93,8 @@ struct thermal_zone_device_ops { int (*set_trips) (struct thermal_zone_device *, int, int); int (*change_mode) (struct thermal_zone_device *, enum thermal_device_mode); - int (*set_trip_temp) (struct thermal_zone_device *, int, int); + int (*set_trip_temp) (struct thermal_zone_device *, + const struct thermal_trip *, int); int (*get_crit_temp) (struct thermal_zone_device *, int *); int (*set_emul_temp) (struct thermal_zone_device *, int); int (*get_trend) (struct thermal_zone_device *, Index: linux-pm/drivers/net/wireless/intel/iwlwifi/mvm/tt.c =================================================================== --- linux-pm.orig/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ linux-pm/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -638,7 +638,7 @@ out: } static int iwl_mvm_tzone_set_trip_temp(struct thermal_zone_device *device, - int trip, int temp) + const struct thermal_trip *trip, int temp) { struct iwl_mvm *mvm = thermal_zone_device_priv(device); int ret; Index: linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -39,13 +39,14 @@ static int int340x_thermal_get_zone_temp } static int int340x_thermal_set_trip_temp(struct thermal_zone_device *zone, - int trip, int temp) + const struct thermal_trip *trip, int temp) { struct int34x_thermal_zone *d = thermal_zone_device_priv(zone); - char name[] = {'P', 'A', 'T', '0' + trip, '\0'}; + unsigned int trip_index = THERMAL_TRIP_PRIV_TO_INT(trip->priv); + char name[] = {'P', 'A', 'T', '0' + trip_index, '\0'}; acpi_status status; - if (trip > 9) + if (trip_index > 9) return -EINVAL; status = acpi_execute_simple_method(d->adev->handle, name, @@ -144,6 +145,7 @@ struct int34x_thermal_zone *int340x_ther zone_trips[i].type = THERMAL_TRIP_PASSIVE; zone_trips[i].temperature = THERMAL_TEMP_INVALID; zone_trips[i].flags |= THERMAL_TRIP_FLAG_RW_TEMP; + zone_trips[i].priv = THERMAL_INT_TO_TRIP_PRIV(i); } trip_cnt = int340x_thermal_read_trips(adev, zone_trips, trip_cnt); Index: linux-pm/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ linux-pm/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -193,7 +193,8 @@ static int sys_get_curr_temp(struct ther return 0; } -static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) +static int sys_set_trip_temp(struct thermal_zone_device *tzd, + const struct thermal_trip *trip, int temp) { struct proc_thermal_pci *pci_info = thermal_zone_device_priv(tzd); int tjmax, _temp; Index: linux-pm/drivers/thermal/intel/intel_quark_dts_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_quark_dts_thermal.c +++ linux-pm/drivers/thermal/intel/intel_quark_dts_thermal.c @@ -195,7 +195,7 @@ static int get_trip_temp(int trip) } static int update_trip_temp(struct soc_sensor_entry *aux_entry, - int trip, int temp) + int trip_index, int temp) { u32 out; u32 temp_out; @@ -230,9 +230,9 @@ static int update_trip_temp(struct soc_s */ temp_out = temp + QRK_DTS_TEMP_BASE; out = (store_ptps & ~(QRK_DTS_MASK_TP_THRES << - (trip * QRK_DTS_SHIFT_TP))); + (trip_index * QRK_DTS_SHIFT_TP))); out |= (temp_out & QRK_DTS_MASK_TP_THRES) << - (trip * QRK_DTS_SHIFT_TP); + (trip_index * QRK_DTS_SHIFT_TP); ret = iosf_mbi_write(QRK_MBI_UNIT_RMU, MBI_REG_WRITE, QRK_DTS_REG_OFFSET_PTPS, out); @@ -242,10 +242,24 @@ failed: return ret; } -static inline int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, - int temp) +static inline int sys_set_trip_temp(struct thermal_zone_device *tzd, + const struct thermal_trip *trip, + int temp) { - return update_trip_temp(thermal_zone_device_priv(tzd), trip, temp); + unsigned int trip_index; + + switch (trip->type) { + case THERMAL_TRIP_HOT: + trip_index = QRK_DTS_ID_TP_HOT; + break; + case THERMAL_TRIP_CRITICAL: + trip_index = QRK_DTS_ID_TP_CRITICAL; + break; + default + return -EINVAL; + } + + return update_trip_temp(thermal_zone_device_priv(tzd), trip_index, temp); } static int sys_get_curr_temp(struct thermal_zone_device *tzd, Index: linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_soc_dts_iosf.c +++ linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.c @@ -129,18 +129,20 @@ err_restore_ptps: return status; } -static int sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, +static int sys_set_trip_temp(struct thermal_zone_device *tzd, + const struct thermal_trip *trip, int temp) { struct intel_soc_dts_sensor_entry *dts = thermal_zone_device_priv(tzd); struct intel_soc_dts_sensors *sensors = dts->sensors; + unsigned int trip_index = THERMAL_TRIP_PRIV_TO_INT(trip->priv); int status; if (temp > sensors->tj_max) return -EINVAL; mutex_lock(&sensors->dts_update_lock); - status = update_trip_temp(sensors, trip, temp); + status = update_trip_temp(sensors, trip_index, temp); mutex_unlock(&sensors->dts_update_lock); return status; @@ -293,11 +295,12 @@ static void dts_trips_reset(struct intel } static void set_trip(struct thermal_trip *trip, enum thermal_trip_type type, - u8 flags, int temp) + u8 flags, int temp, unsigned int index) { trip->type = type; trip->flags = flags; trip->temperature = temp; + trip->priv = THERMAL_INT_TO_TRIP_PRIV(index); } struct intel_soc_dts_sensors * @@ -332,7 +335,7 @@ intel_soc_dts_iosf_init(enum intel_soc_d sensors->soc_dts[i].sensors = sensors; set_trip(&trips[i][0], THERMAL_TRIP_PASSIVE, - THERMAL_TRIP_FLAG_RW_TEMP, 0); + THERMAL_TRIP_FLAG_RW_TEMP, 0, 0); ret = update_trip_temp(sensors, 0, 0); if (ret) @@ -340,10 +343,10 @@ intel_soc_dts_iosf_init(enum intel_soc_d if (critical_trip) { temp = sensors->tj_max - crit_offset; - set_trip(&trips[i][1], THERMAL_TRIP_CRITICAL, 0, temp); + set_trip(&trips[i][1], THERMAL_TRIP_CRITICAL, 0, temp, 1); } else { set_trip(&trips[i][1], THERMAL_TRIP_PASSIVE, - THERMAL_TRIP_FLAG_RW_TEMP, 0); + THERMAL_TRIP_FLAG_RW_TEMP, 0, 1); temp = 0; } Index: linux-pm/drivers/thermal/intel/x86_pkg_temp_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ linux-pm/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -119,9 +119,11 @@ static int sys_get_curr_temp(struct ther } static int -sys_set_trip_temp(struct thermal_zone_device *tzd, int trip, int temp) +sys_set_trip_temp(struct thermal_zone_device *tzd, + const struct thermal_trip *trip, int temp) { struct zone_device *zonedev = thermal_zone_device_priv(tzd); + unsigned int trip_index = THERMAL_TRIP_PRIV_TO_INT(trip->priv); u32 l, h, mask, shift, intr; int tj_max, val, ret; @@ -132,7 +134,7 @@ sys_set_trip_temp(struct thermal_zone_de val = (tj_max - temp)/1000; - if (trip >= MAX_NUMBER_OF_TRIPS || val < 0 || val > 0x7f) + if (trip_index >= MAX_NUMBER_OF_TRIPS || val < 0 || val > 0x7f) return -EINVAL; ret = rdmsr_on_cpu(zonedev->cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, @@ -140,7 +142,7 @@ sys_set_trip_temp(struct thermal_zone_de if (ret < 0) return ret; - if (trip) { + if (trip_index) { mask = THERM_MASK_THRESHOLD1; shift = THERM_SHIFT_THRESHOLD1; intr = THERM_INT_THRESHOLD1_ENABLE; @@ -296,6 +298,7 @@ static int pkg_temp_thermal_trips_init(i trips[i].type = THERMAL_TRIP_PASSIVE; trips[i].flags |= THERMAL_TRIP_FLAG_RW_TEMP; + trips[i].priv = THERMAL_INT_TO_TRIP_PRIV(i); pr_debug("%s: cpu=%d, trip=%d, temp=%d\n", __func__, cpu, i, trips[i].temperature); Index: linux-pm/drivers/thermal/qcom/qcom-spmi-temp-alarm.c =================================================================== --- linux-pm.orig/drivers/thermal/qcom/qcom-spmi-temp-alarm.c +++ linux-pm/drivers/thermal/qcom/qcom-spmi-temp-alarm.c @@ -261,17 +261,13 @@ skip: return qpnp_tm_write(chip, QPNP_TM_REG_SHUTDOWN_CTRL1, reg); } -static int qpnp_tm_set_trip_temp(struct thermal_zone_device *tz, int trip_id, int temp) +static int qpnp_tm_set_trip_temp(struct thermal_zone_device *tz, + const struct thermal_trip *trip, int temp) { struct qpnp_tm_chip *chip = thermal_zone_device_priv(tz); - struct thermal_trip trip; int ret; - ret = __thermal_zone_get_trip(chip->tz_dev, trip_id, &trip); - if (ret) - return ret; - - if (trip.type != THERMAL_TRIP_CRITICAL) + if (trip->type != THERMAL_TRIP_CRITICAL) return 0; mutex_lock(&chip->lock); Index: linux-pm/drivers/thermal/tegra/soctherm.c =================================================================== --- linux-pm.orig/drivers/thermal/tegra/soctherm.c +++ linux-pm/drivers/thermal/tegra/soctherm.c @@ -582,11 +582,11 @@ static int tsensor_group_thermtrip_get(s return temp; } -static int tegra_thermctl_set_trip_temp(struct thermal_zone_device *tz, int trip_id, int temp) +static int tegra_thermctl_set_trip_temp(struct thermal_zone_device *tz, + const struct thermal_trip *trip, int temp) { struct tegra_thermctl_zone *zone = thermal_zone_device_priv(tz); struct tegra_soctherm *ts = zone->ts; - struct thermal_trip trip; const struct tegra_tsensor_group *sg = zone->sg; struct device *dev = zone->dev; int ret; @@ -594,11 +594,7 @@ static int tegra_thermctl_set_trip_temp( if (!tz) return -EINVAL; - ret = __thermal_zone_get_trip(tz, trip_id, &trip); - if (ret) - return ret; - - if (trip.type == THERMAL_TRIP_CRITICAL) { + if (trip->type == THERMAL_TRIP_CRITICAL) { /* * If thermtrips property is set in DT, * doesn't need to program critical type trip to HW, @@ -609,7 +605,7 @@ static int tegra_thermctl_set_trip_temp( else return 0; - } else if (trip.type == THERMAL_TRIP_HOT) { + } else if (trip->type == THERMAL_TRIP_HOT) { int i; for (i = 0; i < THROTTLE_SIZE; i++) { @@ -620,7 +616,7 @@ static int tegra_thermctl_set_trip_temp( continue; cdev = ts->throt_cfgs[i].cdev; - if (get_thermal_instance(tz, cdev, trip_id)) + if (thermal_trip_is_bound_to_cdev(tz, trip, cdev)) stc = find_throttle_cfg_by_name(ts, cdev->type); else continue;