31 May, 2019

1 commit

• 84a14ae8c   treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178 ... Browse Code »

  Based on 1 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

  extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

  has been chosen to replace the boilerplate/reference in 24 file(s).

  Signed-off-by: Thomas Gleixner
  Reviewed-by: Alexios Zavras
  Reviewed-by: Steve Winslow
  Reviewed-by: Allison Randal
  Reviewed-by: Richard Fontana
  Cc: linux-spdx@vger.kernel.org
  Link: https://lkml.kernel.org/r/20190528170026.162703968@linutronix.de
  Signed-off-by: Greg Kroah-Hartman

  Thomas Gleixner

  2019-05-31 02:29:19 +0800  

16 Nov, 2018

1 commit

• f82d15e22   pwm: lpc18xx-sct: Don't reconfigure PWM in .request and .free ... Browse Code »

  Regarding the .request case: The consumer might be interested in taking
  over the configured state from the boot loader. So the initially
  configured state should be retained.

  For the free case the PWM consumer is responsible for disabling the PWM
  before calling pwm_put() and there are three subcases to consider:

  a) The PWM is already off. Then there is no gain in disabling the PWM
  once more.
  b) The PWM is still running and there is a good reason for that. (Not
  sure this is a valid case, I cannot imagine such a good reason.)
  Then it is counterproductive to disable the PWM.
  c) The PWM is still running because the consumer failed to disable the
  PWM. Then the consumer needs fixing and there is little incentive to
  paper over the problem in the backend driver.

  This aligns the lpc18xx-sct driver to the other PWM drivers that also
  don't reconfigure the hardware in .request and .free.

  Signed-off-by: Uwe Kleine-König
  Signed-off-by: Thierry Reding

  Uwe Kleine-König

  2018-11-16 18:02:47 +0800  

08 Sep, 2016

1 commit

• fe0e2cf93   pwm: lpc-18xx: use pwm_set_chip_data ... Browse Code »

  The lpc-18xx driver currently manipulates the pwm_device struct directly
  rather than using the pwm_set_chip_data() function. While the current
  method may save a clock cycle or two, using the explicit function call
  makes it more obvious that data is set to the local chip data pointer.

  Signed-off-by: Olliver Schinagl
  Reviewed-by: Ariel D'Alessandro
  Signed-off-by: Thierry Reding

  oliver@schinagl.nl

  2016-09-08 16:55:05 +0800  

17 May, 2016

1 commit

• 4b58896f7   pwm: Use pwm_get/set_xxx() helpers where appropriate ... Browse Code »

  Use pwm_get/set_xxx() helpers instead of directly accessing the pwm->xxx
  field. Doing that will ease adaptation of the PWM framework to support
  atomic update.

  Signed-off-by: Boris Brezillon
  Signed-off-by: Thierry Reding

  Boris Brezillon

  2016-05-17 20:44:59 +0800  

24 Mar, 2016

1 commit

• 0e47b5981   pwm: lpc18xx-sct: Test clock rate to avoid division by 0 ... Browse Code »

  The clk API may return 0 on clk_get_rate(), so we should check the
  result before using it as a divisor.

  Signed-off-by: Wolfram Sang
  Acked-by: Joachim Eastwood
  Signed-off-by: Thierry Reding

  Wolfram Sang

  2016-03-24 00:11:29 +0800  

09 Sep, 2015

1 commit

• 841e6f90b   pwm: NXP LPC18xx PWM/SCT driver ... Browse Code »

  This commit adds support for NXP LPC18xx PWM/SCT.

  NXP LPC SoCs family, which includes LPC18xx/LPC43xx, provides a State
  Configurable Timer (SCT) which can be configured as a Pulse Width
  Modulator. Other SoCs in that family may share the same hardware.

  The PWM supports a total of 16 channels, but only 15 can be simultaneously
  requested. There's only one period, global to all the channels, thus PWM
  driver will refuse setting different values to it, unless there's only one
  channel requested.

  Signed-off-by: Ariel D'Alessandro
  [thierry.reding@gmail.com: remove excessive padding of fields]
  Signed-off-by: Thierry Reding

  Ariel D'Alessandro

  2015-09-09 21:00:33 +0800