diff options
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/clock_cooling.c | 1 | ||||
| -rw-r--r-- | drivers/thermal/fair_share.c | 2 | ||||
| -rw-r--r-- | drivers/thermal/gov_bang_bang.c | 2 | ||||
| -rw-r--r-- | drivers/thermal/intel_pch_thermal.c | 60 | ||||
| -rw-r--r-- | drivers/thermal/intel_powerclamp.c | 11 | ||||
| -rw-r--r-- | drivers/thermal/power_allocator.c | 2 | ||||
| -rw-r--r-- | drivers/thermal/step_wise.c | 2 | ||||
| -rw-r--r-- | drivers/thermal/thermal_core.c | 10 | ||||
| -rw-r--r-- | drivers/thermal/thermal_hwmon.c | 2 |
9 files changed, 84 insertions, 8 deletions
diff --git a/drivers/thermal/clock_cooling.c b/drivers/thermal/clock_cooling.c index 1b4ff0f4c716..ed5dd0e88657 100644 --- a/drivers/thermal/clock_cooling.c +++ b/drivers/thermal/clock_cooling.c @@ -426,6 +426,7 @@ clock_cooling_register(struct device *dev, const char *clock_name) if (!ccdev) return ERR_PTR(-ENOMEM); + mutex_init(&ccdev->lock); ccdev->dev = dev; ccdev->clk = devm_clk_get(dev, clock_name); if (IS_ERR(ccdev->clk)) diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c index 34fe36504a55..68bd1b569118 100644 --- a/drivers/thermal/fair_share.c +++ b/drivers/thermal/fair_share.c @@ -116,7 +116,9 @@ static int fair_share_throttle(struct thermal_zone_device *tz, int trip) instance->target = get_target_state(tz, cdev, percentage, cur_trip_level); + mutex_lock(&instance->cdev->lock); instance->cdev->updated = false; + mutex_unlock(&instance->cdev->lock); thermal_cdev_update(cdev); } return 0; diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c index fc52016d4e85..bb118a152cbb 100644 --- a/drivers/thermal/gov_bang_bang.c +++ b/drivers/thermal/gov_bang_bang.c @@ -71,7 +71,9 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) dev_dbg(&instance->cdev->device, "target=%d\n", (int)instance->target); + mutex_lock(&instance->cdev->lock); instance->cdev->updated = false; /* cdev needs update */ + mutex_unlock(&instance->cdev->lock); } mutex_unlock(&tz->lock); diff --git a/drivers/thermal/intel_pch_thermal.c b/drivers/thermal/intel_pch_thermal.c index 6a6ec1c95a7a..9b4815e81b0d 100644 --- a/drivers/thermal/intel_pch_thermal.c +++ b/drivers/thermal/intel_pch_thermal.c @@ -21,6 +21,7 @@ #include <linux/init.h> #include <linux/pci.h> #include <linux/thermal.h> +#include <linux/pm.h> /* Intel PCH thermal Device IDs */ #define PCH_THERMAL_DID_WPT 0x9CA4 /* Wildcat Point */ @@ -65,6 +66,7 @@ struct pch_thermal_device { unsigned long crt_temp; int hot_trip_id; unsigned long hot_temp; + bool bios_enabled; }; static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips) @@ -75,8 +77,10 @@ static int pch_wpt_init(struct pch_thermal_device *ptd, int *nr_trips) *nr_trips = 0; /* Check if BIOS has already enabled thermal sensor */ - if (WPT_TSS_TSDSS & readb(ptd->hw_base + WPT_TSS)) + if (WPT_TSS_TSDSS & readb(ptd->hw_base + WPT_TSS)) { + ptd->bios_enabled = true; goto read_trips; + } tsel = readb(ptd->hw_base + WPT_TSEL); /* @@ -130,9 +134,39 @@ static int pch_wpt_get_temp(struct pch_thermal_device *ptd, int *temp) return 0; } +static int pch_wpt_suspend(struct pch_thermal_device *ptd) +{ + u8 tsel; + + if (ptd->bios_enabled) + return 0; + + tsel = readb(ptd->hw_base + WPT_TSEL); + + writeb(tsel & 0xFE, ptd->hw_base + WPT_TSEL); + + return 0; +} + +static int pch_wpt_resume(struct pch_thermal_device *ptd) +{ + u8 tsel; + + if (ptd->bios_enabled) + return 0; + + tsel = readb(ptd->hw_base + WPT_TSEL); + + writeb(tsel | WPT_TSEL_ETS, ptd->hw_base + WPT_TSEL); + + return 0; +} + struct pch_dev_ops { int (*hw_init)(struct pch_thermal_device *ptd, int *nr_trips); int (*get_temp)(struct pch_thermal_device *ptd, int *temp); + int (*suspend)(struct pch_thermal_device *ptd); + int (*resume)(struct pch_thermal_device *ptd); }; @@ -140,6 +174,8 @@ struct pch_dev_ops { static const struct pch_dev_ops pch_dev_ops_wpt = { .hw_init = pch_wpt_init, .get_temp = pch_wpt_get_temp, + .suspend = pch_wpt_suspend, + .resume = pch_wpt_resume, }; static int pch_thermal_get_temp(struct thermal_zone_device *tzd, int *temp) @@ -269,6 +305,22 @@ static void intel_pch_thermal_remove(struct pci_dev *pdev) pci_disable_device(pdev); } +static int intel_pch_thermal_suspend(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct pch_thermal_device *ptd = pci_get_drvdata(pdev); + + return ptd->ops->suspend(ptd); +} + +static int intel_pch_thermal_resume(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct pch_thermal_device *ptd = pci_get_drvdata(pdev); + + return ptd->ops->resume(ptd); +} + static struct pci_device_id intel_pch_thermal_id[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_WPT) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCH_THERMAL_DID_SKL) }, @@ -276,11 +328,17 @@ static struct pci_device_id intel_pch_thermal_id[] = { }; MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id); +static const struct dev_pm_ops intel_pch_pm_ops = { + .suspend = intel_pch_thermal_suspend, + .resume = intel_pch_thermal_resume, +}; + static struct pci_driver intel_pch_thermal_driver = { .name = "intel_pch_thermal", .id_table = intel_pch_thermal_id, .probe = intel_pch_thermal_probe, .remove = intel_pch_thermal_remove, + .driver.pm = &intel_pch_pm_ops, }; module_pci_driver(intel_pch_thermal_driver); diff --git a/drivers/thermal/intel_powerclamp.c b/drivers/thermal/intel_powerclamp.c index 015ce2eb6eb7..0e4dc0afcfd2 100644 --- a/drivers/thermal/intel_powerclamp.c +++ b/drivers/thermal/intel_powerclamp.c @@ -388,7 +388,7 @@ static int clamp_thread(void *arg) int sleeptime; unsigned long target_jiffies; unsigned int guard; - unsigned int compensation = 0; + unsigned int compensated_ratio; int interval; /* jiffies to sleep for each attempt */ unsigned int duration_jiffies = msecs_to_jiffies(duration); unsigned int window_size_now; @@ -409,8 +409,11 @@ static int clamp_thread(void *arg) * c-states, thus we need to compensate the injected idle ratio * to achieve the actual target reported by the HW. */ - compensation = get_compensation(target_ratio); - interval = duration_jiffies*100/(target_ratio+compensation); + compensated_ratio = target_ratio + + get_compensation(target_ratio); + if (compensated_ratio <= 0) + compensated_ratio = 1; + interval = duration_jiffies * 100 / compensated_ratio; /* align idle time */ target_jiffies = roundup(jiffies, interval); @@ -647,8 +650,8 @@ static int powerclamp_set_cur_state(struct thermal_cooling_device *cdev, goto exit_set; } else if (set_target_ratio > 0 && new_target_ratio == 0) { pr_info("Stop forced idle injection\n"); - set_target_ratio = 0; end_power_clamp(); + set_target_ratio = 0; } else /* adjust currently running */ { set_target_ratio = new_target_ratio; /* make new set_target_ratio visible to other cpus */ diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c index 2f1a863a8e15..b4d3116cfdaf 100644 --- a/drivers/thermal/power_allocator.c +++ b/drivers/thermal/power_allocator.c @@ -529,7 +529,9 @@ static void allow_maximum_power(struct thermal_zone_device *tz) continue; instance->target = 0; + mutex_lock(&instance->cdev->lock); instance->cdev->updated = false; + mutex_unlock(&instance->cdev->lock); thermal_cdev_update(instance->cdev); } } diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c index ea9366ad3e6b..bcef2e7c4ec9 100644 --- a/drivers/thermal/step_wise.c +++ b/drivers/thermal/step_wise.c @@ -175,7 +175,9 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) update_passive_instance(tz, trip_type, -1); instance->initialized = true; + mutex_lock(&instance->cdev->lock); instance->cdev->updated = false; /* cdev needs update */ + mutex_unlock(&instance->cdev->lock); } mutex_unlock(&tz->lock); diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 5133cd1e10b7..e2fc6161dded 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1093,7 +1093,9 @@ int power_actor_set_power(struct thermal_cooling_device *cdev, return ret; instance->target = state; + mutex_lock(&cdev->lock); cdev->updated = false; + mutex_unlock(&cdev->lock); thermal_cdev_update(cdev); return 0; @@ -1623,11 +1625,13 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev) struct thermal_instance *instance; unsigned long target = 0; + mutex_lock(&cdev->lock); /* cooling device is updated*/ - if (cdev->updated) + if (cdev->updated) { + mutex_unlock(&cdev->lock); return; + } - mutex_lock(&cdev->lock); /* Make sure cdev enters the deepest cooling state */ list_for_each_entry(instance, &cdev->thermal_instances, cdev_node) { dev_dbg(&cdev->device, "zone%d->target=%lu\n", @@ -1637,9 +1641,9 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev) if (instance->target > target) target = instance->target; } - mutex_unlock(&cdev->lock); cdev->ops->set_cur_state(cdev, target); cdev->updated = true; + mutex_unlock(&cdev->lock); trace_cdev_update(cdev, target); dev_dbg(&cdev->device, "set to state %lu\n", target); } diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c index 06fd2ed9ef9d..c41c7742903a 100644 --- a/drivers/thermal/thermal_hwmon.c +++ b/drivers/thermal/thermal_hwmon.c @@ -232,6 +232,7 @@ int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz) return result; } +EXPORT_SYMBOL_GPL(thermal_add_hwmon_sysfs); void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz) { @@ -270,3 +271,4 @@ void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz) hwmon_device_unregister(hwmon->device); kfree(hwmon); } +EXPORT_SYMBOL_GPL(thermal_remove_hwmon_sysfs); |