From: Lee Jones <lee.jones@linaro.org>
To: Samuel Ortiz <sameo@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, arnd@arndb.de,
linus.walleij@stericsson.com
Subject: Re: [PATCH 09/26] mfd: ab8500-debugfs: Provide a means for a user subscribe to IRQs
Date: Mon, 28 Jan 2013 08:25:23 +0000 [thread overview]
Message-ID: <20130128082523.GY15873@gmail.com> (raw)
In-Reply-To: <20130127235259.GO1174@sortiz-mobl>
On Mon, 28 Jan 2013, Samuel Ortiz wrote:
> Hi Lee,
>
> On Tue, Jan 15, 2013 at 12:55:49PM +0000, Lee Jones wrote:
> > Allow users to subscribe to and view IRQ events live from debugfs.
> I seem to remember that I got a similar patch some time ago for the same
> purpose and my answer was: Please use a UIO driver for this. There already is
> such driver, it's uio_pdrv_genirq. What your debugfs registration entry could
> do is adding a platform device for the specific interrupt number. This would
> avoid the irq handler registration and the sysfs entry creation, both things I
> believe are not very elegant and open coded. It also gives you an IRQ count
> implementation.
> Ideally, the UIO framework could be improved to support IRQ ranges (through
> IRQ domains) instead of the current single interrupt number.
>
> Have you considered going through that path ?
I haven't looked into re-writing any of the MFD stuff yet. Instead I
have a plan of action:
1. Upstream as many of the 100 patches from the internal kernel up
into Mainline.
2. Mark any patches which are unsuitable for Mainlining and re-work
them after the remainder have been accepted. Not withstanding small
fixups, as these can be done on the fly without too much disruption.
3. Upstream the remainder once re-worked.
If I don't follow this work-flow and fix-up/re-work as I go, not only
will it take forever, but I'm also likely to encounter too many
complications in the way of conflicts in the latter stages.
I'm also following the same work-flow for 'drivers/power' and
'drivers/regulator'.
--
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2013-01-28 8:25 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-15 12:55 [PATCH 00/26] AB8500 MFD overhaul Lee Jones
2013-01-15 12:55 ` [PATCH 01/26] mfd: ab8500-sysctrl: Provide a platform specific pm_power_off() call-back Lee Jones
2013-01-15 12:55 ` [PATCH 02/26] mfd: ab8500-sysctrl: If a charger is present, reboot instead Lee Jones
2013-01-27 23:52 ` Samuel Ortiz
2013-01-28 8:44 ` Lee Jones
2013-01-15 12:55 ` [PATCH 03/26] mfd: ab8500-sysctrl: Only reboot into charging mode if battery type is known Lee Jones
2013-01-15 12:55 ` [PATCH 04/26] mfd: ab8500-sysctrl.c: Provide charging as reset reason Lee Jones
2013-01-15 12:55 ` [PATCH 05/26] mfd: ab8500-gpadc: Change to mdelay for greater resolution Lee Jones
2013-01-27 23:52 ` Samuel Ortiz
2013-01-28 8:43 ` Lee Jones
2013-01-15 12:55 ` [PATCH 06/26] mfd: ab8500-sysctrl: Provide configuration for SysClkReqRfClkBuf registers Lee Jones
2013-01-27 23:52 ` Samuel Ortiz
2013-01-28 8:38 ` Lee Jones
2013-02-03 17:02 ` Samuel Ortiz
2013-01-15 12:55 ` [PATCH 07/26] mfd: ab8500-sysctrl: export read/write symbols Lee Jones
2013-01-15 12:55 ` [PATCH 08/26] mfd: abx500-core: Provide an API to dump all ABx500 registers Lee Jones
2013-01-15 12:55 ` [PATCH 09/26] mfd: ab8500-debugfs: Provide a means for a user subscribe to IRQs Lee Jones
2013-01-27 23:52 ` Samuel Ortiz
2013-01-28 8:25 ` Lee Jones [this message]
2013-01-28 10:22 ` Lee Jones
2013-01-28 10:49 ` Samuel Ortiz
2013-01-28 11:34 ` Lee Jones
2013-02-03 17:01 ` Samuel Ortiz
2013-02-04 9:27 ` Lee Jones
2013-01-15 12:55 ` [PATCH 10/26] mfd: ab8500-debugfs: Wake-up device on debugfs IRQ Lee Jones
2013-01-27 23:53 ` Samuel Ortiz
2013-01-28 8:49 ` Lee Jones
2013-01-15 12:55 ` [PATCH 11/26] mfd: ab8500-debugfs: Keep count of IRQs in debugfs Lee Jones
2013-01-15 12:55 ` [PATCH 12/26] mfd: ab8500-debugfs: Use NULL to initialise remaining NULL pointer Lee Jones
2013-01-15 13:06 ` Mark Brown
2013-01-15 13:49 ` Lee Jones
2013-01-15 12:55 ` [PATCH 13/26] mfd: ab8500-debugfs: Formated access AB8500 registers from debugfs entry Lee Jones
2013-01-27 23:53 ` Samuel Ortiz
2013-01-28 8:47 ` Lee Jones
2013-01-15 12:55 ` [PATCH 14/26] mfd: ab8500-debugfs: Fix introduced compiler time warnings Lee Jones
2013-01-27 23:53 ` Samuel Ortiz
2013-01-28 8:45 ` Lee Jones
2013-01-15 12:55 ` [PATCH 15/26] mfd: ab8500-debugfs: Export all AB8500 ADCs as debugfs nodes Lee Jones
2013-01-15 12:55 ` [PATCH 16/26] mfd: ab8500-debugfs: Set the USB charging current to 300mA for ABV3 Lee Jones
2013-01-15 12:55 ` [PATCH 17/26] mfd: ab8500-debugfs: add debugfs node to read all registers Lee Jones
2013-01-15 12:55 ` [PATCH 18/26] mfd: ab8500-core: Allow the possibility to dump all AB8500 registers Lee Jones
2013-01-15 12:55 ` [PATCH 19/26] mfd: ab8500-debugfs: Allow number of IRQs to be provided more dynamically Lee Jones
2013-01-15 12:56 ` [PATCH 20/26] mfd ab8500-gpadc: Introduce new AB version detection Lee Jones
2013-01-15 12:56 ` [PATCH 21/26] mfd: ab8500-debugfs: Add interrupt debug Lee Jones
2013-01-15 12:56 ` [PATCH 22/26] mfd: ab8500-gpadc: Add runtime pm support Lee Jones
2013-01-15 12:56 ` [PATCH 23/26] mfd: ab8500-pwm: Enable support for AB8505 PWMLED blink Lee Jones
2013-01-27 23:53 ` Samuel Ortiz
2013-01-28 8:13 ` Lee Jones
2013-01-15 12:56 ` [PATCH 24/26] mfd: ab8500-debugfs: sizeof() mismatch bugfix Lee Jones
2013-01-15 12:56 ` [PATCH 25/26] mfd: ab8500-gpadc: Reduce conversion timeout Lee Jones
2013-01-27 23:53 ` Samuel Ortiz
2013-01-28 8:45 ` Lee Jones
2013-01-15 12:56 ` [PATCH 26/26] mfd: ab8500-gpadc: Use new ab8500_gpadc_get() with name parameter Lee Jones
2013-01-27 23:54 ` Samuel Ortiz
2013-01-28 8:11 ` Lee Jones
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