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Magnus Damm 13977091a9 Driver Core: early platform driver 
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>
2009-04-16 16:17:10 -07:00
..
ABI doc: use correct debugfs mountpoint 2009-04-13 15:04:33 -07:00
accounting Documentation/accounting/getdelays.c: fix endless loop 2009-01-15 16:39:37 -08:00
acpi ACPI: update debug parameter documentation 2008-11-07 21:45:29 -05:00
aoe
arm Merge branch 'next-s3c-pm' of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-03-26 22:44:43 +00:00
auxdisplay .gitignore updates 2008-10-30 11:38:45 -07:00
blackfin Blackfin arch: Add document about bfin-gpio 2009-01-07 23:14:38 +08:00
block block: update biodoc.txt on plugging 2009-04-15 08:28:11 +02:00
blockdev mflash: initial support 2009-04-07 08:12:38 +02:00
cdrom doc/cdrom: Trvial documentation error, file not present 2008-10-10 08:22:44 +02:00
cgroups memcg: fix documentation 2009-04-13 15:04:33 -07:00
connector Documentation/connector/cn_test.c: don't use gfp_any() 2009-02-12 16:47:01 -08:00
console
cpu-freq [CPUFREQ] ondemand/conservative: sanitize sampling_rate restrictions 2009-02-24 22:47:31 -05:00
cpuidle
cris fix random typos 2008-10-16 11:21:30 -07:00
crypto async_tx, dmaengine: document channel allocation and api rework 2009-01-05 18:10:19 -07:00
development-process Fix a typo in the development process document. 2009-01-08 16:32:13 -07:00
device-mapper dm crypt: add documentation 2008-04-25 13:27:03 +01:00
DocBook docbook: make cleandocs 2009-04-11 08:18:12 +02:00
driver-model Driver Core: early platform driver 2009-04-16 16:17:10 -07:00
dvb V4L/DVB (11138): get_dvb_firmware: add support for downloading the cx2584x firmware for pvrusb2 2009-03-30 12:43:31 -03:00
early-userspace Documentation: Remove last references to BitKeeper. 2008-04-21 22:19:05 +00:00
fault-injection
fb uvesafb: documentation update 2009-04-07 08:31:09 -07:00
filesystems nilfs2: clean up sketch file 2009-04-07 08:31:19 -07:00
firmware_class firmware_sample_driver.c: fix coding style 2008-04-21 22:23:30 +00:00
frv
hwmon hwmon: add support for GMT G760A fan speed PWM controller 2009-04-07 08:31:03 -07:00
i2c Move the pcf8591 driver to hwmon 2009-03-30 21:46:43 +02:00
i2o
ia64 trivial: Fix misspelling of firmware 2009-03-30 15:21:59 +02:00
ide ide: update warm-plug HOWTO 2009-01-06 17:21:00 +01:00
infiniband IPoIB: Document newish features 2009-04-08 13:52:01 -07:00
input Input: generic driver for rotary encoders on GPIOs 2009-03-08 16:35:53 -07:00
ioctl V4L/DVB (10870a): remove all references for video_decoder.h 2009-03-30 12:43:15 -03:00
isdn gigaset: documentation update 2009-04-06 17:07:57 -07:00
ja_JP Sync patch for jp_JP/stable_kernel_rules.txt 2009-01-28 15:55:48 -08:00
kbuild kbuild: introduce destination-y for exported headers 2009-04-11 08:18:08 +02:00
kdump powerpc: Support for relocatable kdump kernel 2008-10-22 15:01:22 +11:00
ko_KR
laptops Merge branch 'thinkpad-acpi' into release 2009-04-05 01:42:09 -04:00
lguest lguest: barrier me harder 2009-03-30 21:55:26 +10:30
m68k
make
mips ide: remove unused CONFIG_BLK_DEV_IDE_AU1XXX_SEQTS_PER_RQ 2009-01-14 19:19:03 +01:00
misc-devices drivers/misc/isl29003.c: driver for the ISL29003 ambient light sensor 2009-04-01 08:59:18 -07:00
mn10300
mtd [MTD] [NAND] nand_ecc.c: rewrite for improved performance 2008-08-16 10:55:33 +01:00
namespaces
netlabel
networking Bonding: fix zero address hole bug in arp_ip_target list 2009-04-13 00:12:41 -07:00
parisc
PCI PCI MSI: Add example request loop to MSI-HOWTO.txt 2009-03-20 11:35:04 -07:00
pcmcia .gitignore updates 2008-10-30 11:38:45 -07:00
power pm: document use of RTC in pm_trace 2008-10-16 11:21:29 -07:00
powerpc Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc 2009-04-15 08:42:40 -07:00
prctl generic, x86: add tests for prctl PR_GET_TSC and PR_SET_TSC 2008-04-19 19:19:55 +02:00
RCU Doc: Fix spelling in RCU/rculist_nulls.txt. 2009-04-02 01:33:51 -07:00
s390 documentation: update s390 header file paths 2009-01-06 15:59:28 -08:00
scheduler trivial: fix where cgroup documentation is not correctly referred to 2009-03-30 15:22:02 +02:00
scsi [SCSI] aacraid driver update 2009-04-03 09:23:11 -05:00
serial Create/use more directory structure in the Documentation/ tree. 2008-11-14 17:28:53 +00:00
sh sh: Kill off remaining CONFIG_SH_KGDB bits. 2008-12-22 18:44:05 +09:00
sound ALSA: add missing definitions(letters) to HD-Audio.txt 2009-04-15 11:51:50 +02:00
sparc sparc: Remove Documentation/sparc/sbus_drivers.txt 2008-08-29 02:15:25 -07:00
spi hwmon: (lm70) Code streamlining and cleanup 2009-01-07 16:37:34 +01:00
sysctl Documentation/sysctl/net.txt: fix a typo 2009-04-13 15:04:28 -07:00
telephony remove mention of CONFIG_KMOD from documentation 2008-07-22 19:24:29 +10:00
thermal thermal: update the documentation 2008-04-29 02:49:47 -04:00
timers hpet: /dev/hpet - fixes and cleanup 2008-07-31 18:45:41 +02:00
trace tracing: consolidate documents 2009-04-09 07:28:10 +02:00
uml
usb USB: usbmon: Add binary API v1 2009-03-24 16:20:36 -07:00
video4linux V4L/DVB (11373): v4l2-common: add explicit v4l2_device pointer as first arg to new_(probed)_subdev 2009-04-06 21:44:24 -03:00
vm mm: add documentation describing what tsk->active_mm means vs tsk->mm 2009-04-13 15:04:32 -07:00
w1 w1: send status messages after command processing 2009-01-08 08:31:14 -08:00
watchdog .gitignore updates 2008-10-30 11:38:45 -07:00
wimax i2400m: documentation and instructions for usage 2009-01-07 10:00:18 -08:00
x86 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
zh_CN
00-INDEX trivial: fix where cgroup documentation is not correctly referred to 2009-03-30 15:22:02 +02:00
applying-patches.txt
atomic_ops.txt
bad_memory.txt Document handling of bad memory 2008-12-03 16:09:53 -07:00
basic_profiling.txt
binfmt_misc.txt
braille-console.txt Basic braille screen reader support 2008-04-30 08:29:52 -07:00
bt8xxgpio.txt gpio: add bt8xxgpio driver 2008-07-25 10:53:30 -07:00
BUG-HUNTING
c2port.txt Add c2 port support 2008-11-12 17:17:18 -08:00
cachetlb.txt
Changes Documentation/Changes: add required versions for new filesystems 2009-01-29 18:19:30 -08:00
CodingStyle fix emacs indenting howto filename expansion 2009-01-29 18:19:29 -08:00
cpu-hotplug.txt x86: use possible_cpus=NUM to extend the possible cpus allowed 2008-12-18 12:08:05 +01:00
cpu-load.txt
cputopology.txt cpumask: Use topology_core_cpumask()/topology_thread_cpumask() 2009-01-11 19:12:49 +01:00
credentials.txt CRED: Documentation 2008-11-14 10:39:26 +11:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt firewire: fw-ohci: add option for remote debugging 2008-04-18 17:55:33 +02:00
dell_rbu.txt trivial: fix an -> a typos in documentation and comments 2009-01-06 11:28:07 +01:00
devices.txt lanana: assign a device name and numbering for MAX3100 2009-04-07 08:44:05 -07:00
DMA-API.txt dma-debug: Documentation update 2009-03-17 12:56:47 +01:00
DMA-attributes.txt powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code 2008-07-22 10:39:36 +10:00
DMA-ISA-LPC.txt
DMA-mapping.txt dma-mapping: update the old macro DMA_nBIT_MASK related documentations 2009-04-07 08:31:12 -07:00
dmaengine.txt async_tx, dmaengine: document channel allocation and api rework 2009-01-05 18:10:19 -07:00
dontdiff dontdiff: Fix asm exclude 2009-03-26 15:45:43 -07:00
dynamic-debug-howto.txt Dynamic debug: allow simple quoting of words 2009-03-24 16:38:27 -07:00
edac.txt Documentation cleanup: trivial misspelling, punctuation, and grammar corrections. 2008-07-26 12:00:06 -07:00
eisa.txt
email-clients.txt Documentation/email-clients.txt: add some info about gmail 2008-11-06 15:41:19 -08:00
exception.txt
feature-removal-schedule.txt i2c-voodoo3: Deprecate in favor of tdfxfb 2009-04-13 17:02:13 +02:00
gpio.txt gpio: gpio_{request,free}() now required (feature removal) 2009-04-02 19:04:51 -07:00
highuid.txt [SPARC]: Remove SunOS and Solaris binary support. 2008-04-21 15:10:15 -07:00
HOWTO Remove Andrew Morton's http://www.zip.com.au/~akpm/ 2008-10-16 11:21:32 -07:00
hw_random.txt hw_random doc updates 2008-03-24 19:22:19 -07:00
ics932s401 ics932s401: new clock generator chip driver 2008-11-12 17:17:18 -08:00
initrd.txt
Intel-IOMMU.txt Documentation cleanup: trivial misspelling, punctuation, and grammar corrections. 2008-07-26 12:00:06 -07:00
io_ordering.txt
io-mapping.txt io mapping: improve documentation 2008-11-03 18:21:44 +01:00
IO-mapping.txt Documentation: move DMA-mapping.txt to Doc/PCI/ 2009-01-29 18:19:29 -08:00
iostats.txt Documentation cleanup: trivial misspelling, punctuation, and grammar corrections. 2008-07-26 12:00:06 -07:00
IPMI.txt
IRQ-affinity.txt genirq: Expose default irq affinity mask (take 3) 2008-06-05 15:18:30 +02:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt kernel-doc: preferred ending marker and examples 2009-02-11 14:25:36 -08:00
kernel-docs.txt doc: update to URL and status of kernel-docs.txt entry 2008-06-06 11:29:10 -07:00
kernel-parameters.txt docs: alphabetize entries in kernel-parameters.txt 2009-04-06 13:43:43 -07:00
keys-request-key.txt keys: allow the callout data to be passed as a blob rather than a string 2008-04-29 08:06:16 -07:00
keys.txt Documentation cleanup: trivial misspelling, punctuation, and grammar corrections. 2008-07-26 12:00:06 -07:00
kobject.txt kobject: Make Documentation/kobject.txt a little more coherent. 2009-01-06 10:44:32 -08:00
kprobes.txt kprobes: support kretprobe and jprobe per-probe disabling 2009-04-07 08:31:08 -07:00
kref.txt
ldm.txt
leds-class.txt Documentation cleanup: trivial misspelling, punctuation, and grammar corrections. 2008-07-26 12:00:06 -07:00
local_ops.txt documentation: local_ops fix on_each_cpu 2008-12-01 13:51:26 +01:00
lockdep-design.txt lockdep: get_user_chars() redo 2009-02-14 23:28:22 +01:00
lockstat.txt lockstat: contend with points 2008-10-20 15:43:10 +02:00
logo.svg linux.conf.au 2009: Tuz 2009-03-16 07:55:37 -07:00
logo.txt linux.conf.au 2009: Tuz 2009-03-16 07:55:37 -07:00
magic-number.txt documentation: update header file paths 2009-01-06 15:59:28 -08:00
Makefile docsrc: build Documentation/ sources 2008-08-12 16:07:30 -07:00
ManagementStyle docs: fix ManagementStyle book name 2008-10-30 11:38:46 -07:00
markers.txt markers: comment marker_synchronize_unregister() on data dependency 2008-11-28 16:47:41 +01:00
mca.txt
md.txt Documentation/md.txt update 2009-03-31 15:18:37 +11:00
memory-barriers.txt read_barrier_depends arch fixlets 2008-05-14 10:05:18 -07:00
memory-hotplug.txt mm: show node to memory section relationship with symlinks in sysfs 2009-01-06 15:59:00 -08:00
memory.txt
mono.txt
mutex-design.txt
nmi_watchdog.txt x86, nmi-watchdog: update procfs nmi_watchdog file documentation v2 2008-10-30 19:07:04 +01:00
nommu-mmap.txt NOMMU: Make mmap allocation page trimming behaviour configurable. 2009-01-08 12:04:47 +00:00
numastat.txt
oops-tracing.txt Taint kernel after WARN_ON(condition) 2008-04-29 08:05:59 -07:00
parport-lowlevel.txt
parport.txt
pi-futex.txt
pnp.txt
preempt-locking.txt
printk-formats.txt DOC: add printk-formats.txt 2008-11-12 17:17:17 -08:00
prio_tree.txt
rbtree.txt
rfkill.txt rfkill: add master_switch_mode and EPO lock to rfkill and rfkill-input 2008-10-31 19:00:09 -04:00
robust-futex-ABI.txt
robust-futexes.txt
rt-mutex-design.txt
rt-mutex.txt
rtc.txt
SAK.txt Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
SecurityBugs
SELinux.txt selinux: add support for installing a dummy policy (v2) 2008-08-27 08:54:08 +10:00
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
slow-work.txt Document the slow work thread pool 2009-04-03 16:42:35 +01:00
SM501.txt
Smack.txt smack: Add a new '-CIPSO' option to the network address label configuration 2009-03-28 15:01:37 +11:00
sparse.txt Documentation: explain the difference between __bitwise and __bitwise__ 2009-04-11 08:18:11 +02:00
spinlocks.txt Add additional examples in Documentation/spinlocks.txt 2008-04-11 13:21:14 -06:00
stable_api_nonsense.txt
stable_kernel_rules.txt Update stable tree documentation 2008-10-29 15:03:49 -07:00
SubmitChecklist documentation: explain memory barriers 2008-10-16 11:21:32 -07:00
SubmittingDrivers Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
SubmittingPatches Merge branch 'docs' of git://git.lwn.net/linux-2.6 2008-10-16 12:18:16 -07:00
svga.txt
sysfs-rules.txt sysfs-rules.txt: reword API stability statement 2008-07-21 21:54:59 -07:00
sysrq.txt Merge branch 'tracing/core-v2' into tracing-for-linus 2009-04-02 00:49:02 +02:00
tomoyo.txt tomoyo: add Documentation/tomoyo.txt 2009-04-14 09:14:58 +10:00
unaligned-memory-access.txt introduce HAVE_EFFICIENT_UNALIGNED_ACCESS Kconfig symbol 2008-07-25 10:53:27 -07:00
unicode.txt
unshare.txt
VGA-softcursor.txt
video-output.txt
volatile-considered-harmful.txt Documentation cleanup: trivial misspelling, punctuation, and grammar corrections. 2008-07-26 12:00:06 -07:00
voyager.txt
zorro.txt