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* [PATCH 0/4] Minimal generic wakeirq helpers
@ 2015-03-06  0:34 Tony Lindgren
  2015-03-06  0:34 ` [PATCH 1/4] PM / Wakeirq: Add minimal device wakeirq helper functions Tony Lindgren
                   ` (3 more replies)
  0 siblings, 4 replies; 20+ messages in thread
From: Tony Lindgren @ 2015-03-06  0:34 UTC (permalink / raw)
  To: Rafael J. Wysocki
  Cc: Andreas Fenkart, Greg Kroah-Hartman, Felipe Balbi, Huiquan Zhong,
	Kevin Hilman, NeilBrown, Mika Westerberg, Nishanth Menon,
	Peter Hurley, Sebastian Andrzej Siewior, Ulf Hansson,
	Thomas Gleixner, linux-kernel, linux-serial, linux-omap

Hi all,

Here's an attempt to have Linux generic wakeirq helpers. This allows
removing most of the related code from drivers. Currently the drivers
all do it in a slightly different way. And may have issues with interrupt
re-entrancy and getting the suspend/resume vs runtime_pm wake handling
right.

This is for wakerirqs that are available for some devices in addition
to the regular device interrupts. The seprate always-on wake-up interrupt
controller is needed to allow devices and the SoC to enter deeper idle
states and still be able to wake-up to events.

Some of this was discussed in the kernel/irq context a while back [1].
But it seems that this can be done in drivers/base/power. If somebody has
hardware that needs to replay lost device interrupts based on the
wake-up interrupts, then additional kernel/irq changes will be needed.

This set fixes up three drivers to use the generic wakeirq. Note that
eventually the wakeirq handling for these drivers might end up in a
bus specific code and could be hidden away from the drivers.

Regards,

Tony


[1] https://lkml.org/lkml/2014/11/13/458

Tony Lindgren (4):
  PM / Wakeirq: Add minimal device wakeirq helper functions
  serial: 8250_omap: Move wake-up interrupt to generic wakeirq
  serial: omap: Switch wake-up interrupt to generic wakeirq
  mmc: omap_hsmmc: Change wake-up interrupt to use generic wakeirq

 arch/arm/mach-omap2/Kconfig         |   1 +
 drivers/base/power/Makefile         |   1 +
 drivers/base/power/wakeirq.c        | 201 ++++++++++++++++++++++++++++++++++++
 drivers/mmc/host/omap_hsmmc.c       |  55 +++-------
 drivers/tty/serial/8250/8250_omap.c |  67 +++---------
 drivers/tty/serial/omap-serial.c    |  38 +++----
 include/linux/pm_wakeirq.h          |  69 +++++++++++++
 kernel/power/Kconfig                |   4 +
 8 files changed, 318 insertions(+), 118 deletions(-)
 create mode 100644 drivers/base/power/wakeirq.c
 create mode 100644 include/linux/pm_wakeirq.h

-- 
2.1.4


^ permalink raw reply	[flat|nested] 20+ messages in thread

end of thread, other threads:[~2015-03-09 16:46 UTC | newest]

Thread overview: 20+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-03-06  0:34 [PATCH 0/4] Minimal generic wakeirq helpers Tony Lindgren
2015-03-06  0:34 ` [PATCH 1/4] PM / Wakeirq: Add minimal device wakeirq helper functions Tony Lindgren
2015-03-06  2:02   ` Rafael J. Wysocki
2015-03-06 12:41     ` Rafael J. Wysocki
2015-03-06 16:19     ` Tony Lindgren
2015-03-06 19:05       ` Alan Stern
2015-03-06 23:05         ` Tony Lindgren
2015-03-07  0:43           ` Rafael J. Wysocki
2015-03-07  1:09             ` Tony Lindgren
2015-03-08 15:43             ` Alan Stern
2015-03-09 14:09               ` Rafael J. Wysocki
2015-03-08 15:41           ` Alan Stern
2015-03-09 15:09             ` Tony Lindgren
2015-03-09 15:42               ` Alan Stern
2015-03-09 16:41                 ` Tony Lindgren
2015-03-06 23:30         ` Rafael J. Wysocki
2015-03-08 15:34           ` Alan Stern
2015-03-06  0:34 ` [PATCH 2/4] serial: 8250_omap: Move wake-up interrupt to generic wakeirq Tony Lindgren
2015-03-06  0:34 ` [PATCH 3/4] serial: omap: Switch " Tony Lindgren
2015-03-06  0:34 ` [PATCH 4/4] mmc: omap_hsmmc: Change wake-up interrupt to use " Tony Lindgren

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