| Message ID | 1343182273-32096-7-git-send-email-rui.zhang@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wednesday, July 25, 2012, Zhang Rui wrote: > set upper and lower limits when binding > a thermal cooling device to a thermal zone device. > > Signed-off-by: Zhang Rui <rui.zhang@intel.com> > --- > Documentation/thermal/sysfs-api.txt | 9 +++++- > drivers/acpi/thermal.c | 53 +++++++++++++++++++++++------------ > drivers/platform/x86/acerhdf.c | 3 +- > drivers/thermal/thermal_sys.c | 23 ++++++++++----- > include/linux/thermal.h | 5 +++- > 5 files changed, 65 insertions(+), 28 deletions(-) > > diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt > index c087dbc..ca1a1a3 100644 > --- a/Documentation/thermal/sysfs-api.txt > +++ b/Documentation/thermal/sysfs-api.txt > @@ -84,7 +84,8 @@ temperature) and throttle appropriate devices. > > 1.3 interface for binding a thermal zone device with a thermal cooling device > 1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, > - int trip, struct thermal_cooling_device *cdev); > + int trip, struct thermal_cooling_device *cdev, > + unsigned long upper, unsigned long lower); > > This interface function bind a thermal cooling device to the certain trip > point of a thermal zone device. > @@ -93,6 +94,12 @@ temperature) and throttle appropriate devices. > cdev: thermal cooling device > trip: indicates which trip point the cooling devices is associated with > in this thermal zone. > + upper:the Maximum cooling state for this trip point. > + THERMAL_NO_LIMIT means no upper limit, > + and the cooling device can be in max_state. > + lower:the Minimum cooling state can be used for this trip point. > + THERMAL_NO_LIMIT means no lower limit, > + and the cooling device can be in cooling state 0. > > 1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz, > int trip, struct thermal_cooling_device *cdev); > diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c > index 8275e7b..0154eac 100644 > --- a/drivers/acpi/thermal.c > +++ b/drivers/acpi/thermal.c > @@ -727,11 +727,9 @@ static int thermal_notify(struct thermal_zone_device *thermal, int trip, > return 0; > } > > -typedef int (*cb)(struct thermal_zone_device *, int, > - struct thermal_cooling_device *); > static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, > struct thermal_cooling_device *cdev, > - cb action) > + bool bind) > { > struct acpi_device *device = cdev->devdata; > struct acpi_thermal *tz = thermal->devdata; > @@ -755,11 +753,19 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, > i++) { > handle = tz->trips.passive.devices.handles[i]; > status = acpi_bus_get_device(handle, &dev); > - if (ACPI_SUCCESS(status) && (dev == device)) { > - result = action(thermal, trip, cdev); > - if (result) > - goto failed; > - } > + if (ACPI_FAILURE(status) || dev != device) > + continue; > + if (bind) > + result = > + thermal_zone_bind_cooling_device > + (thermal, trip, cdev, > + THERMAL_NO_LIMIT, THERMAL_NO_LIMIT); > + else > + result = > + thermal_zone_unbind_cooling_device > + (thermal, trip, cdev); > + if (result) > + goto failed; > } > } > > @@ -772,11 +778,17 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, > j++) { > handle = tz->trips.active[i].devices.handles[j]; > status = acpi_bus_get_device(handle, &dev); > - if (ACPI_SUCCESS(status) && (dev == device)) { > - result = action(thermal, trip, cdev); > - if (result) > - goto failed; > - } > + if (ACPI_FAILURE(status) || dev != device) > + continue; > + if (bind) > + result = thermal_zone_bind_cooling_device > + (thermal, trip, cdev, > + THERMAL_NO_LIMIT, THERMAL_NO_LIMIT); > + else > + result = thermal_zone_unbind_cooling_device > + (thermal, trip, cdev); > + if (result) > + goto failed; > } > } > > @@ -784,7 +796,14 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, > handle = tz->devices.handles[i]; > status = acpi_bus_get_device(handle, &dev); > if (ACPI_SUCCESS(status) && (dev == device)) { > - result = action(thermal, -1, cdev); > + if (bind) > + result = thermal_zone_bind_cooling_device > + (thermal, -1, cdev, > + THERMAL_NO_LIMIT, > + THERMAL_NO_LIMIT); > + else > + result = thermal_zone_unbind_cooling_device > + (thermal, -1, cdev); > if (result) > goto failed; > } > @@ -798,16 +817,14 @@ static int > acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal, > struct thermal_cooling_device *cdev) > { > - return acpi_thermal_cooling_device_cb(thermal, cdev, > - thermal_zone_bind_cooling_device); > + return acpi_thermal_cooling_device_cb(thermal, cdev, 1); That should be + return acpi_thermal_cooling_device_cb(thermal, cdev, true); I suppose. > } > > static int > acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal, > struct thermal_cooling_device *cdev) > { > - return acpi_thermal_cooling_device_cb(thermal, cdev, > - thermal_zone_unbind_cooling_device); > + return acpi_thermal_cooling_device_cb(thermal, cdev, 0); And that should be + return acpi_thermal_cooling_device_cb(thermal, cdev, false); > } > > static const struct thermal_zone_device_ops acpi_thermal_zone_ops = { > diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c > index 39abb15..a207466 100644 > --- a/drivers/platform/x86/acerhdf.c > +++ b/drivers/platform/x86/acerhdf.c > @@ -329,7 +329,8 @@ static int acerhdf_bind(struct thermal_zone_device *thermal, > if (cdev != cl_dev) > return 0; > > - if (thermal_zone_bind_cooling_device(thermal, 0, cdev)) { > + if (thermal_zone_bind_cooling_device(thermal, 0, cdev, > + THERMAL_NO_LIMIT, THERMAL_NO_LIMIT)) { > pr_err("error binding cooling dev\n"); > return -EINVAL; > } > diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c > index 008e2eb..62b4279 100644 > --- a/drivers/thermal/thermal_sys.c > +++ b/drivers/thermal/thermal_sys.c > @@ -315,8 +315,9 @@ passive_store(struct device *dev, struct device_attribute *attr, > if (!strncmp("Processor", cdev->type, > sizeof("Processor"))) > thermal_zone_bind_cooling_device(tz, > - THERMAL_TRIPS_NONE, > - cdev); > + THERMAL_TRIPS_NONE, cdev, > + THERMAL_NO_LIMIT, > + THERMAL_NO_LIMIT); > } > mutex_unlock(&thermal_list_lock); > if (!tz->passive_delay) > @@ -801,7 +802,8 @@ static void thermal_zone_device_check(struct work_struct *work) > */ > int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, > int trip, > - struct thermal_cooling_device *cdev) > + struct thermal_cooling_device *cdev, > + unsigned long upper, unsigned long lower) > { > struct thermal_cooling_device_instance *dev; > struct thermal_cooling_device_instance *pos; > @@ -825,6 +827,15 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, > if (tz != pos1 || cdev != pos2) > return -EINVAL; > > + cdev->ops->get_max_state(cdev, &max_state); > + > + /* lower default 0, upper default max_state */ > + lower = lower == THERMAL_NO_LIMIT ? 0 : lower; > + upper = upper == THERMAL_NO_LIMIT ? max_state : upper; > + > + if (lower > upper || upper > max_state) > + return -EINVAL; > + > dev = > kzalloc(sizeof(struct thermal_cooling_device_instance), GFP_KERNEL); > if (!dev) > @@ -832,10 +843,8 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, > dev->tz = tz; > dev->cdev = cdev; > dev->trip = trip; > - > - cdev->ops->get_max_state(cdev, &max_state); > - dev->upper = max_state; > - dev->lower = 0; > + dev->upper = upper; > + dev->lower = lower; > > result = get_idr(&tz->idr, &tz->lock, &dev->id); > if (result) > diff --git a/include/linux/thermal.h b/include/linux/thermal.h > index cfc8d90..a43b12c 100644 > --- a/include/linux/thermal.h > +++ b/include/linux/thermal.h > @@ -75,6 +75,8 @@ struct thermal_cooling_device_ops { > int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); > }; > > +#define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */ > + > #define THERMAL_TRIPS_NONE -1 > #define THERMAL_MAX_TRIPS 12 > #define THERMAL_NAME_LENGTH 20 > @@ -157,7 +159,8 @@ struct thermal_zone_device *thermal_zone_device_register(char *, int, int, > void thermal_zone_device_unregister(struct thermal_zone_device *); > > int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, > - struct thermal_cooling_device *); > + struct thermal_cooling_device *, > + unsigned long, unsigned long); > int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, > struct thermal_cooling_device *); > void thermal_zone_device_update(struct thermal_zone_device *); > Looks good apart from the above nits (arguably minor). Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt index c087dbc..ca1a1a3 100644 --- a/Documentation/thermal/sysfs-api.txt +++ b/Documentation/thermal/sysfs-api.txt @@ -84,7 +84,8 @@ temperature) and throttle appropriate devices. 1.3 interface for binding a thermal zone device with a thermal cooling device 1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, - int trip, struct thermal_cooling_device *cdev); + int trip, struct thermal_cooling_device *cdev, + unsigned long upper, unsigned long lower); This interface function bind a thermal cooling device to the certain trip point of a thermal zone device. @@ -93,6 +94,12 @@ temperature) and throttle appropriate devices. cdev: thermal cooling device trip: indicates which trip point the cooling devices is associated with in this thermal zone. + upper:the Maximum cooling state for this trip point. + THERMAL_NO_LIMIT means no upper limit, + and the cooling device can be in max_state. + lower:the Minimum cooling state can be used for this trip point. + THERMAL_NO_LIMIT means no lower limit, + and the cooling device can be in cooling state 0. 1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz, int trip, struct thermal_cooling_device *cdev); diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 8275e7b..0154eac 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -727,11 +727,9 @@ static int thermal_notify(struct thermal_zone_device *thermal, int trip, return 0; } -typedef int (*cb)(struct thermal_zone_device *, int, - struct thermal_cooling_device *); static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, struct thermal_cooling_device *cdev, - cb action) + bool bind) { struct acpi_device *device = cdev->devdata; struct acpi_thermal *tz = thermal->devdata; @@ -755,11 +753,19 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, i++) { handle = tz->trips.passive.devices.handles[i]; status = acpi_bus_get_device(handle, &dev); - if (ACPI_SUCCESS(status) && (dev == device)) { - result = action(thermal, trip, cdev); - if (result) - goto failed; - } + if (ACPI_FAILURE(status) || dev != device) + continue; + if (bind) + result = + thermal_zone_bind_cooling_device + (thermal, trip, cdev, + THERMAL_NO_LIMIT, THERMAL_NO_LIMIT); + else + result = + thermal_zone_unbind_cooling_device + (thermal, trip, cdev); + if (result) + goto failed; } } @@ -772,11 +778,17 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, j++) { handle = tz->trips.active[i].devices.handles[j]; status = acpi_bus_get_device(handle, &dev); - if (ACPI_SUCCESS(status) && (dev == device)) { - result = action(thermal, trip, cdev); - if (result) - goto failed; - } + if (ACPI_FAILURE(status) || dev != device) + continue; + if (bind) + result = thermal_zone_bind_cooling_device + (thermal, trip, cdev, + THERMAL_NO_LIMIT, THERMAL_NO_LIMIT); + else + result = thermal_zone_unbind_cooling_device + (thermal, trip, cdev); + if (result) + goto failed; } } @@ -784,7 +796,14 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal, handle = tz->devices.handles[i]; status = acpi_bus_get_device(handle, &dev); if (ACPI_SUCCESS(status) && (dev == device)) { - result = action(thermal, -1, cdev); + if (bind) + result = thermal_zone_bind_cooling_device + (thermal, -1, cdev, + THERMAL_NO_LIMIT, + THERMAL_NO_LIMIT); + else + result = thermal_zone_unbind_cooling_device + (thermal, -1, cdev); if (result) goto failed; } @@ -798,16 +817,14 @@ static int acpi_thermal_bind_cooling_device(struct thermal_zone_device *thermal, struct thermal_cooling_device *cdev) { - return acpi_thermal_cooling_device_cb(thermal, cdev, - thermal_zone_bind_cooling_device); + return acpi_thermal_cooling_device_cb(thermal, cdev, 1); } static int acpi_thermal_unbind_cooling_device(struct thermal_zone_device *thermal, struct thermal_cooling_device *cdev) { - return acpi_thermal_cooling_device_cb(thermal, cdev, - thermal_zone_unbind_cooling_device); + return acpi_thermal_cooling_device_cb(thermal, cdev, 0); } static const struct thermal_zone_device_ops acpi_thermal_zone_ops = { diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c index 39abb15..a207466 100644 --- a/drivers/platform/x86/acerhdf.c +++ b/drivers/platform/x86/acerhdf.c @@ -329,7 +329,8 @@ static int acerhdf_bind(struct thermal_zone_device *thermal, if (cdev != cl_dev) return 0; - if (thermal_zone_bind_cooling_device(thermal, 0, cdev)) { + if (thermal_zone_bind_cooling_device(thermal, 0, cdev, + THERMAL_NO_LIMIT, THERMAL_NO_LIMIT)) { pr_err("error binding cooling dev\n"); return -EINVAL; } diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c index 008e2eb..62b4279 100644 --- a/drivers/thermal/thermal_sys.c +++ b/drivers/thermal/thermal_sys.c @@ -315,8 +315,9 @@ passive_store(struct device *dev, struct device_attribute *attr, if (!strncmp("Processor", cdev->type, sizeof("Processor"))) thermal_zone_bind_cooling_device(tz, - THERMAL_TRIPS_NONE, - cdev); + THERMAL_TRIPS_NONE, cdev, + THERMAL_NO_LIMIT, + THERMAL_NO_LIMIT); } mutex_unlock(&thermal_list_lock); if (!tz->passive_delay) @@ -801,7 +802,8 @@ static void thermal_zone_device_check(struct work_struct *work) */ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, int trip, - struct thermal_cooling_device *cdev) + struct thermal_cooling_device *cdev, + unsigned long upper, unsigned long lower) { struct thermal_cooling_device_instance *dev; struct thermal_cooling_device_instance *pos; @@ -825,6 +827,15 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, if (tz != pos1 || cdev != pos2) return -EINVAL; + cdev->ops->get_max_state(cdev, &max_state); + + /* lower default 0, upper default max_state */ + lower = lower == THERMAL_NO_LIMIT ? 0 : lower; + upper = upper == THERMAL_NO_LIMIT ? max_state : upper; + + if (lower > upper || upper > max_state) + return -EINVAL; + dev = kzalloc(sizeof(struct thermal_cooling_device_instance), GFP_KERNEL); if (!dev) @@ -832,10 +843,8 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, dev->tz = tz; dev->cdev = cdev; dev->trip = trip; - - cdev->ops->get_max_state(cdev, &max_state); - dev->upper = max_state; - dev->lower = 0; + dev->upper = upper; + dev->lower = lower; result = get_idr(&tz->idr, &tz->lock, &dev->id); if (result) diff --git a/include/linux/thermal.h b/include/linux/thermal.h index cfc8d90..a43b12c 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -75,6 +75,8 @@ struct thermal_cooling_device_ops { int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); }; +#define THERMAL_NO_LIMIT -1UL /* no upper/lower limit requirement */ + #define THERMAL_TRIPS_NONE -1 #define THERMAL_MAX_TRIPS 12 #define THERMAL_NAME_LENGTH 20 @@ -157,7 +159,8 @@ struct thermal_zone_device *thermal_zone_device_register(char *, int, int, void thermal_zone_device_unregister(struct thermal_zone_device *); int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, - struct thermal_cooling_device *); + struct thermal_cooling_device *, + unsigned long, unsigned long); int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); void thermal_zone_device_update(struct thermal_zone_device *);
set upper and lower limits when binding a thermal cooling device to a thermal zone device. Signed-off-by: Zhang Rui <rui.zhang@intel.com> --- Documentation/thermal/sysfs-api.txt | 9 +++++- drivers/acpi/thermal.c | 53 +++++++++++++++++++++++------------ drivers/platform/x86/acerhdf.c | 3 +- drivers/thermal/thermal_sys.c | 23 ++++++++++----- include/linux/thermal.h | 5 +++- 5 files changed, 65 insertions(+), 28 deletions(-)