From: Samuel Ortiz <sameo@linux.intel.com>
To: Lee Jones <lee.jones@linaro.org>
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 00:52:59 +0100 [thread overview]
Message-ID: <20130127235259.GO1174@sortiz-mobl> (raw)
In-Reply-To: <1358254566-12419-10-git-send-email-lee.jones@linaro.org>
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 ?
Cheers,
Samuel.
--
Intel Open Source Technology Centre
http://oss.intel.com/
next prev parent reply other threads:[~2013-01-27 23:53 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 [this message]
2013-01-28 8:25 ` Lee Jones
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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