[Bug 238037] [PATCH] Implement ig4 suspend/resume

Sun Dec 22 00:47:17 UTC 2019

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238037

--- Comment #23 from commit-hook at freebsd.org ---
A commit references this bug:

Author: wulf
Date: Sun Dec 22 00:46:08 UTC 2019
New revision: 355994
URL: https://svnweb.freebsd.org/changeset/base/355994

Log:
  MFC r354291 - r354322, r354327, r355596

  r354291:
  [ig4] Give common name to PCI and ACPI device drivers

  r354292:
  [ig4] Handle controller startup errors

  Obtained from:        DragonflyBSD (509820b)

  r354293:
  [ig4] Only enable interrupts when we want them. Otherwise keep mask at 0.

  Obtained from:        DragonflyBSD (d7c8555)

  r354294:
  [ig4] Drop driver's internal RX FIFO

  r354295:
  [ig4] Do not wait for interrupts in set_controller() routine

  r354296:
  [ig4] Reduce scope of io_lock

  r354297:
  [ig4] Ignore stray interrupts

  r354298:
  [ig4] We actually need to set the Rx threshold register one smaller.

  Obtained from:        DragonflyBSD (02f0bf2)

  r354299:

  [ig4] Stop I2C controller after checking that it's kind of functional.

  Obtained from:        DragonfliBSD (0b3eedb)

  r354300:
  [ig4] disable controller before initialization of clock counters

  r354301:
  [ig4] Add support for polled mode

  r354302:
  [ig4] Allow enabling of polled mode from iicbus allocation callback

  r354303:
  [ig4] Do not wait until interrupts are enabled at attach stage

  r354304:
  [cyapa] Postpone start of the polling thread until sleep is available

  r354305:
  [ig4] dump IG4_REG_COMP_PARAM1 and IG4_REG_COMP_VER registers unconditionally

  r354306:
  [ig4] Set clock registers based on controller model

  r354307:
  [ig4] Implement burst mode for data reads

  r354308:
  [ig4] Add suspend/resume support

  PR:           238037

  r354309:
  [ig4] Remove dead code inherited from DragonflyBSD

  r354310:
  [ig4] Rewrite ig4iic_write routine to use TX_EMPTY status flag

  r354311:
  [ig4] Convert last remaining usage of TX_NOTFULL status to TX_EMPTY

  r354312:
  [ig4] Use interrupts for waiting for empty TX FIFO

  r354313:
  [ig4] Convert polling loop from status-based to interrupt-based

  r354314:
  [ig4] Improve error detection

  r354315:
  [ig4] Set STOP condition and flush TX/RX FIFOs on error

  r354316:
  [ig4] On SkyLake controllers issue reset on attach unconditionally.

  r354317:
  [ig4] wait for bus stop condition after stop command issued

  r354318:
  [ig4] Minor improvement of write pipelining

  r354319:
  [ig4] Add generic resource methods to bus interface

  r354320:
  [ig4] Add support for CannonLake controllers

  PR:           240485
  Submitted by: Neel Chauhan <neel at neelc.org>

  r354321:
  [ig4] Enable additional registers support on Appolo Lake controllers

  r354322:
  [ig4] Convert ithread interrupt handler to filter based one.

  r354327:
  [ig4] Try to workaround MIPS namespace pollution issue

  r355596:
  [ig4] Remove unused methods from bus interface

  Suggested by: jhb

  Reviewed by:          imp (previous version)
  Differential Revision:        https://reviews.freebsd.org/D22016

Changes:
_U  stable/12/
  stable/12/sys/dev/chromebook_platform/chromebook_platform.c
  stable/12/sys/dev/cyapa/cyapa.c
  stable/12/sys/dev/ichiic/ig4_acpi.c
  stable/12/sys/dev/ichiic/ig4_iic.c
  stable/12/sys/dev/ichiic/ig4_pci.c
  stable/12/sys/dev/ichiic/ig4_reg.h
  stable/12/sys/dev/ichiic/ig4_var.h
  stable/12/sys/dev/iicbus/iicbus.c

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