1. 30 May, 2019 1 commit
    • Thomas Gleixner's avatar
      treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 · c942fddf
      Thomas Gleixner authored
      Based on 3 normalized pattern(s):
      
        this program is free software you can redistribute it and or modify
        it under the terms of the gnu general public license as published by
        the free software foundation either version 2 of the license or at
        your option any later version this program is distributed in the
        hope that it will be useful but without any warranty without even
        the implied warranty of merchantability or fitness for a particular
        purpose see the gnu general public license for more details
      
        this program is free software you can redistribute it and or modify
        it under the terms of the gnu general public license as published by
        the free software foundation either version 2 of the license or at
        your option any later version [author] [kishon] [vijay] [abraham]
        [i] [kishon]@[ti] [com] this program is distributed in the hope that
        it will be useful but without any warranty without even the implied
        warranty of merchantability or fitness for a particular purpose see
        the gnu general public license for more details
      
        this program is free software you can redistribute it and or modify
        it under the terms of the gnu general public license as published by
        the free software foundation either version 2 of the license or at
        your option any later version [author] [graeme] [gregory]
        [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
        [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
        [hk] [hemahk]@[ti] [com] this program is distributed in the hope
        that it will be useful but without any warranty without even the
        implied warranty of merchantability or fitness for a particular
        purpose see the gnu general public license for more details
      
      extracted by the scancode license scanner the SPDX license identifier
      
        GPL-2.0-or-later
      
      has been chosen to replace the boilerplate/reference in 1105 file(s).
      Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Reviewed-by: default avatarAllison Randal <allison@lohutok.net>
      Reviewed-by: default avatarRichard Fontana <rfontana@redhat.com>
      Reviewed-by: default avatarKate Stewart <kstewart@linuxfoundation.org>
      Cc: linux-spdx@vger.kernel.org
      Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.deSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      c942fddf
  2. 25 Oct, 2018 1 commit
  3. 07 Apr, 2017 1 commit
    • Steve Twiss's avatar
      thermal: da9062/61: Thermal junction temperature monitoring driver · 608567aa
      Steve Twiss authored
      Add junction temperature monitoring supervisor device driver, compatible
      with the DA9062 and DA9061 PMICs. A MODULE_DEVICE_TABLE() macro is added.
      
      If the PMIC's internal junction temperature rises above T_WARN (125 degC)
      an interrupt is issued. This T_WARN level is defined as the
      THERMAL_TRIP_HOT trip-wire inside the device driver.
      
      The thermal triggering mechanism is interrupt based and happens when the
      temperature rises above a given threshold level. The component cannot
      return an exact temperature, it only has knowledge if the temperature is
      above or below a given threshold value. A status bit must be polled to
      detect when the temperature falls below that threshold level again. A
      kernel work queue is configured to repeatedly poll and detect when the
      temperature falls below this trip-wire, between 1 and 10 second intervals
      (defaulting at 3 seconds).
      
      This scheme is provided as an example. It would be expected that any
      final implementation will also include a notify() function and any of these
      settings could be altered to match the application where appropriate.
      
      When over-temperature is reached, the interrupt from the DA9061/2 will be
      repeatedly triggered. The IRQ is therefore disabled when the first
      over-temperature event happens and the status bit is polled using a
      work-queue until it becomes false.
      
      This strategy is designed to allow the periodic transmission of uevents
      (HOT trip point) as the first level of temperature supervision method. It
      is intended for non-invasive temperature control, where the necessary
      measures for cooling the system down are left to the host software. Once
      the temperature falls again, the IRQ is re-enabled so a new critical
      over-temperature event can be detected.
      Reviewed-by: default avatarLukasz Luba <lukasz.luba@arm.com>
      Signed-off-by: default avatarSteve Twiss <stwiss.opensource@diasemi.com>
      Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
      608567aa