path: root/drivers/thermal/int340x_thermal/int3403_thermal.c
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2018-04-24thermal: int3403_thermal: Fix NULL pointer deref on module load / probeHans de Goede
Starting with kernel 4.17 thermal_cooling_device_register() will call the get_max_state() op during register. Since we deref priv->priv in int3403_get_max_state() this means we must set priv->priv before calling thermal_cooling_device_register(). Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2017-06-29thermal: int340x: check for sensor when PTYP is missingSrinivas Pandruvada
For INT3403 sensor PTYP field is mandatory. But some platforms didn't have this field for sensors. This cause load failure for int3403 driver. This change checks for the presence of _TMP method and if present, then treats this device as a sensor. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2016-09-27thermal: int3403: Process trip change notificationSrinivas Pandruvada
When ACPI sends notification for trip point change re-read trips and notify thermal core, so that this can be passed to user space thermal controller. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2016-09-27thermal: int340x: New Interface to read trip and notifySrinivas Pandruvada
Separated the code for reading trip points from int340x_thermal_zone_add to a standalone function int340x_thermal_read_trips. This standlone interface to read is exported so that int340x drivers can re-read trips on ACPI notification for trip point change. Also the appropriate notification events are sent by int340x driver based on the acpi event using int340x_thermal_zone_device_update(). Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2015-01-20Thermal/int340x/int3403: Use int340x thermal APISrinivas Pandruvada
Using APIs from int340x thermal zone module to add and remove thermal zones. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-12-24Thermal/int340x/int3403: Free acpi notification handlerSrinivas Pandruvada
Remove acpi notification handler when zone is removed. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-12-24Thermal/int340x/int3403: Fix memory leakSrinivas Pandruvada
Address memory leak for buffer allocated with ACPI_ALLOCATE_BUFFER. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-12-09Thermal: fix platform_no_drv_owner.cocci warningsWu Fengguang
drivers/thermal/int340x_thermal/int3403_thermal.c:468:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-12-09thermal: int3403: Delete a check before thermal_zone_device_unregister()Markus Elfring
The thermal_zone_device_unregister() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2014-11-04Thermal/int3403: Fix thermal hysteresis unit conversionlan,Tianyu
Thermal hysteresis represents a temperature difference. But the original code treats it as a temperature value, Convert it from tenths of degree Kelvin to Milli-Celsius by deducing 273200. This is not right. Kelvin and Celsius have same degree size. From temperature difference view, the conversion between tenths of degree Kelvin unit and Milli-Celsius unit is just to multiply 100. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2014-10-11Thermal: introduce int3403 thermal driverLan Tianyu
ACPI INT3403 device object can be used to retrieve temperature date from temperature sensors present in the system, and to expose device' performance control. The previous INT3403 thermal driver supports temperature reporting only, thus remove it and introduce this new & enhanced one. Signed-off-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>