- Generic Device Tree bindings and hooks for drivers so we can
move over modern drivers to using this.
- Device Tree bindings for Tegra SoCs.
- Funneling some devicetree helper code for the drivers/of
subsystem.
- New pin control drivers for:
- Freescale MXS
- Freescale i.MX51
- Freescale i.MX53
- All of these use Device Tree bindings.
- Dummy pinctrl handles for stepwise migration to pinctrl, akin
to dummy regulators.
- Minor non-urgent fixes and improvments.
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Merge tag 'pinctrl-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control subsystem changes from Linus Walleij:
- Generic Device Tree bindings and hooks for drivers so we can move
over modern drivers to using this.
- Device Tree bindings for Tegra SoCs.
- Funneling some devicetree helper code for the drivers/of subsystem.
- New pin control drivers for:
* Freescale MXS
* Freescale i.MX51
* Freescale i.MX53
All of these use Device Tree bindings.
- Dummy pinctrl handles for stepwise migration to pinctrl, akin to
dummy regulators.
- Minor non-urgent fixes and improvments.
Fix up trivial conflicts in Documentation/driver-model/devres.txt and
drivers/pinctrl/core.c,
* tag 'pinctrl-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (46 commits)
pinctrl: pinctrl-imx: add imx51 pinctrl driver
pinctrl: pinctrl-imx: add imx53 pinctrl driver
pinctrl: pinctrl-pxa3xx: remove empty pinmux disable function
pinctrl: pinctrl-mxs: remove empty pinmux disable function
pinctrl: pinctrl-imx: remove empty pinmux disable function
pinctrl: make pinmux disable function optional
pinctrl: a minor error checking improvement for pinconf
pinctrl: mxs: skip gpio nodes for group creation
pinctrl: mxs: create group for pin config node
pinctrl: (cosmetic) fix two entries in DocBook comments
pinctrl: add more info to error msgs in pin_request
pinctrl: add pinctrl-mxs support
pinctrl: pinctrl-imx: add imx6q pinctrl driver
pinctrl: pinctrl-imx: add imx pinctrl core driver
dt: add of_get_child_count helper function
pinctrl: support gpio request deferred probing
pinctrl: add pinctrl_provide_dummies interface for platforms to use
pinctrl: enhance reporting of errors when loading from DT
pinctrl: add kerneldoc for pinctrl_ops device tree functions
pinctrl: propagate map validation errors
...
Allow clk API users to simplify their cleanup paths by providing a
managed version of clk_get() and clk_put().
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Mark Brownauthored and Russell Kingcommited 2012-04-19 19:34:18 +01:00
These functions allow the driver core to automatically clean up any
allocations made by drivers, thus leading to simplified drivers.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stephen Warrenauthored and Linus Walleijcommited 2012-04-18 13:53:13 +02:00
Add devm_regulator_put() and devm_regulator_bulk_get() to the list of managed
interfaces.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Axel Linauthored and Mark Browncommited 2012-01-31 11:18:56 +00:00
Add a resource managed regulator_get() to simplify regulator
usage in drivers. This allows driver authors to "get and forget"
about their regulators by automatically calling regulator_put()
when the driver is detached.
[Fixed up a couple of coding style issues -- broonie]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Stephen Boydauthored and Mark Browncommited 2012-01-20 12:02:55 +00:00
Almost every platform_driver does the three steps get_resource,
request_mem_region, ioremap. This does not only lead to a lot of code
duplication, but also a huge number of similar error strings and
inconsistent error codes on failure. So, introduce a helper function
which simplifies remapping a resource and make it hard to do something
wrong and add documentation for it.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Wolfram Sangauthored and Greg Kroah-Hartmancommited 2011-11-15 16:07:39 -08:00
The driver model documentation was added to the kernel tree before
struct class was added to <linux/device.h>. Hence this patch that
updates the paragraph about struct class in
Documentation/driver-model/binding.txt.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bart Van Asscheauthored and Greg Kroah-Hartmancommited 2011-08-24 16:01:24 -07:00
Several drivers use device_create_file() where device.groups should be
used instead. This patch documents that and also removes the comments
about device classes since these should not be used in new code in the
way documented until now in Documentation/driver-model/device.txt.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bart Van Asscheauthored and Greg Kroah-Hartmancommited 2011-08-24 16:01:24 -07:00
A few grammatical fixes, clarifications and corrections in just the
overview file for the driver model documentation.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Robert P. J. Dayauthored and Greg Kroah-Hartmancommited 2011-06-07 10:04:21 -07:00
Remove the struct bus_type, class, device, device_driver from the
driver-model docs. With another patch add them to device.h, since
they are out of date. That will keep things up to date and provide
a better way to document this stuff.
Signed-off-by: Wanlong Gao <wanlong.gao@gmail.com>
Acked-by: Harry Wei <harryxiyou@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Wanlong Gaoauthored and Greg Kroah-Hartmancommited 2011-05-06 18:01:05 -07:00
drivers/base/intf.c was removed before the beginning of (git) time but
its Documentation stuck around. Remove it.
Signed-off-by: Brandon Philips <brandon@ifup.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Brandon Philipsauthored and Greg Kroah-Hartmancommited 2010-11-10 16:57:11 -08:00
Replace platfrom -> platform.
This is a frequent spelling bug.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Stefan Weilauthored and Jiri Kosinacommited 2010-02-05 12:22:34 +01:00
Many struct driver_attribute descriptors are purely read-only
structures, and there's no need to change them. Therefore make
the promise not to, which will let those descriptors be put in
a ro section.
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Phil Carmodyauthored and Greg Kroah-Hartmancommited 2009-12-23 11:23:43 -08:00
FIX prototypes for show & store method in struct driver_attribute
Signed-off-by: vibi sreenivasan <vibi_sreenivasan@cms.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
vibi sreenivasanauthored and Greg Kroah-Hartmancommited 2009-07-12 13:02:10 -07:00
Add a blurb to the driver-model documentation about how (not) to add
extra attributes to a struct device at driver probe time.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Grant Likelyauthored and Greg Kroah-Hartmancommited 2009-06-15 21:30:23 -07:00
V3 of the early platform driver implementation.
Platform drivers are great for embedded platforms because we can separate
driver configuration from the actual driver. So base addresses,
interrupts and other configuration can be kept with the processor or board
code, and the platform driver can be reused by many different platforms.
For early devices we have nothing today. For instance, to configure early
timers and early serial ports we cannot use platform devices. This
because the setup order during boot. Timers are needed before the
platform driver core code is available. The same goes for early printk
support. Early in this case means before initcalls.
These early drivers today have their configuration either hard coded or
they receive it using some special configuration method. This is working
quite well, but if we want to support both regular kernel modules and
early devices then we need to have two ways of configuring the same
driver. A single way would be better.
The early platform driver patch is basically a set of functions that allow
drivers to register themselves and architecture code to locate them and
probe. Registration happens through early_param(). The time for the
probe is decided by the architecture code.
See Documentation/driver-model/platform.txt for more details.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Magnus Dammauthored and Greg Kroah-Hartmancommited 2009-04-16 16:17:10 -07:00
Fix the presented definition of struct device_attribute to match the
actual definition in include/linux/device.h
Signed-off-by: Mike Murphy <mamurph[at]cs.clemson.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Murphyauthored and Linus Torvaldscommited 2009-02-22 09:27:15 -08:00
Most of these fixes were already submitted for old kernel versions, and were
approved, but for some reason they never made it into the releases.
Because this is a consolidation of a couple old missed patches, it touches both
Kconfigs and documentation texts.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Matt LaPlanteauthored and Adrian Bunkcommited 2007-10-20 01:34:40 +02:00
Make note of the legacy "probe-the-hardware" drivers, and some APIs that
are mostly unused except by such drivers. We probably can't escape having
legacy drivers for a while (e.g. old ISA drivers), but we can at least
discourage this style code for new drivers, and unless it's unavoidable.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Andres Salomon <dilinger@debian.org>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownellauthored and Greg Kroah-Hartmancommited 2007-06-08 12:41:07 -07:00
Fix various typos in kernel docs and Kconfigs, 2.6.21-rc4.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Matt LaPlanteauthored and Adrian Bunkcommited 2007-05-09 08:58:15 +02:00
Above and below we talk about my_midlayer_create_something, I assume that is
also meant here.
Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Rolf Eike Beerauthored and Greg Kroah-Hartmancommited 2007-05-02 18:57:59 -07:00
Found a couple of typos in the Documentation/driver-model/platform.txt
file. This patch fixes both of them.
Signed-off-by: Erik Hovland <erik@hovland.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Erik Hovlandauthored and Adrian Bunkcommited 2007-02-17 19:29:21 +01:00
Implement device resource management, in short, devres. A device
driver can allocate arbirary size of devres data which is associated
with a release function. On driver detach, release function is
invoked on the devres data, then, devres data is freed.
devreses are typed by associated release functions. Some devreses are
better represented by single instance of the type while others need
multiple instances sharing the same release function. Both usages are
supported.
devreses can be grouped using devres group such that a device driver
can easily release acquired resources halfway through initialization
or selectively release resources (e.g. resources for port 1 out of 4
ports).
This patch adds devres core including documentation and the following
managed interfaces.
* alloc/free : devm_kzalloc(), devm_kzfree()
* IO region : devm_request_region(), devm_release_region()
* IRQ : devm_request_irq(), devm_free_irq()
* DMA : dmam_alloc_coherent(), dmam_free_coherent(),
dmam_declare_coherent_memory(), dmam_pool_create(),
dmam_pool_destroy()
* PCI : pcim_enable_device(), pcim_pin_device(), pci_is_managed()
* iomap : devm_ioport_map(), devm_ioport_unmap(), devm_ioremap(),
devm_ioremap_nocache(), devm_iounmap(), pcim_iomap_table(),
pcim_iomap(), pcim_iounmap()
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Tejun Heoauthored and Jeff Garzikcommited 2007-02-09 17:39:36 -05:00
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits)
Driver core: show drivers in /sys/module/
Documentation/driver-model/platform.txt update/rewrite
Driver core: platform_driver_probe(), can save codespace
driver core: Use klist_remove() in device_move()
driver core: Introduce device_move(): move a device to a new parent.
Driver core: make drivers/base/core.c:setup_parent() static
driver core: Introduce device_find_child().
sysfs: sysfs_write_file() writes zero terminated data
cpu topology: consider sysfs_create_group return value
Driver core: Call platform_notify_remove later
ACPI: Change ACPI to use dev_archdata instead of firmware_data
Driver core: add dev_archdata to struct device
Driver core: convert sound core to use struct device
Driver core: change mem class_devices to be real devices
Driver core: convert fb code to use struct device
Driver core: convert firmware code to use struct device
Driver core: convert mmc code to use struct device
Driver core: convert ppdev code to use struct device
Driver core: convert PPP code to use struct device
Driver core: convert cpuid code to use struct device
...
This is almost a rewrite of the driver-model/platform.txt documentation;
the previous text was obsolete (for several years), evidently it never
got updated to match the change from being a PC "legacy_bus" to the more
widely used core bus for most embedded systems.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownellauthored and Greg Kroah-Hartmancommited 2006-12-01 14:52:02 -08:00
This patch fixes typos in various Documentation txts. The patch addresses some
misc words.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Matt LaPlanteauthored and Adrian Bunkcommited 2006-11-30 05:21:10 +01:00
Remove many duplicated words under Documentation/ and do other small
cleanups.
Examples:
"and and" --> "and"
"in in" --> "in"
"the the" --> "the"
"the the" --> "to the"
...
Signed-off-by: Paolo Ornati <ornati@fastwebnet.it>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Paolo Ornatiauthored and Adrian Bunkcommited 2006-10-03 22:57:56 +02:00
This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'Q'-'R'.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Matt LaPlanteauthored and Adrian Bunkcommited 2006-10-03 22:54:15 +02:00
This patch fixes typos in various Documentation txts. The patch addresses
some words starting with the letters 'H'-'M'.
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Matt LaPlanteauthored and Adrian Bunkcommited 2006-10-03 22:50:39 +02:00
Edits to the driver-model documentation for grammar, clarity and content.
These docs haven't been updated in years, and some of the technical content
and discussion has become stale; this patch updates these. In addition,
some of the language is awkward. Fix this.
(I'm trying to cleanup the other files in this directory also,
patches for these will come a bit later).
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Acked-by: Patrick Mochel <mochel@digitalimplant.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Linas Vepstasauthored and Linus Torvaldscommited 2006-02-03 08:31:59 -08:00
In PM v1, all devices were called at SUSPEND_DISABLE level. Then
all devices were called at SUSPEND_SAVE_STATE level, and finally
SUSPEND_POWER_DOWN level. However, with PM v2, to maintain
compatibility for platform devices, I arranged for the PM v2
suspend/resume callbacks to call the old PM v1 suspend/resume
callbacks three times with each level in order so that existing
drivers continued to work.
Since this is obsolete infrastructure which is no longer necessary,
we can remove it. Here's an (untested) patch to do exactly that.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Russell Kingauthored and Greg Kroah-Hartmancommited 2005-10-28 09:52:56 -07:00
The document porting.txt in Documentation/driver-model says:
When a device is successfully bound to a device
I think it should say:
When a device is successfully bound to a driver
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Erik Hovlandauthored and Greg Kroah-Hartmancommited 2005-10-28 09:52:50 -07:00
This updates some driver data documentation:
- removes references to some fields that haven't been there for a
long time now, e.g. pre-kobject or even older;
- giving more information about the probe() method;
- adding an example of how platform_data is used
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownellauthored and Greg Kroah-Hartmancommited 2005-06-20 15:15:29 -07:00
I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately
that turned out not to be the case as Russel King pointed out. Here are
fixes for Documentation and common code (mainly system devices).
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Pavel Machekauthored and Linus Torvaldscommited 2005-04-16 15:25:24 -07:00
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Linus Torvalds
commited 
Mark Brown
authored and
Russell King
commited 
Stephen Warren
authored and
Linus Walleij
commited 
Mark Brown
commited 
Axel Lin
authored and
Wolfram Sang
authored and
Greg Kroah-Hartman
commited 
Stephen Boyd
authored and
Bart Van Assche
authored and
Robert P. J. Day
authored and
Wanlong Gao
authored and
Brandon Philips
authored and
Stefan Weil
authored and
Jiri Kosina
commited 
Phil Carmody
authored and
vibi sreenivasan
authored and
Grant Likely
authored and
Matt LaPlante
authored and
Magnus Damm
authored and
Mike Murphy
authored and
Stephen Rothwell
authored and
Adrian Bunk
commited 
Brandon Philips
authored and
David Brownell
authored and
Adrian Bunk
commited 
Michael Opdenacker
authored and
Rolf Eike Beer
authored and
Erik Hovland
authored and
Tejun Heo
authored and
Jeff Garzik
commited 
Linus Torvalds
commited 
Paolo Ornati
authored and
olecom@mail.ru
authored and
Linas Vepstas
authored and
Linus Torvalds
commited 
Takashi Iwai
authored and
Russell King
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Pavel Machek
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Linus Torvalds
commited