Commit graph

56 commits

Author SHA1 Message Date
Russell King
988addf82e Merge branch 'origin' into devel-stable
Conflicts:
	arch/arm/mach-mx2/devices.c
	arch/arm/mach-mx2/devices.h
	sound/soc/pxa/pxa-ssp.c
2010-03-08 20:21:04 +00:00
Paul Mundt
4d2185d93c sh: Use dummy_irq_chip for INTC redirect vectors.
Presently there's an ordering issue with the chained handler change
which places the set_irq_chip() after set_irq_chained_handler(). This
causes a warning to be emitted as the IRQ chip needs to be set first.
However, there is the caveat that redirect IRQs can't use the parent
IRQ's irq chip as they are just dummy redirects, resulting in
intc_enable() blowing up when set_irq_chained_handler() attempts to
start up the redirect IRQ. In these cases we can just use dummy_irq_chip
directly, as we already extract the parent IRQ and chip from the redirect
handler.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-17 12:37:42 +09:00
Magnus Damm
d85429a317 sh: extend INTC with force_disable
Extend the shared INTC code with force_disable support to
allow keeping mask bits statically disabled. Needed for
SDHI support to mask out unsupported interrupt sources.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-16 13:38:56 +09:00
Magnus Damm
e6f077592d sh: fix INTC to use set_irq_chained_handler() for redirects
This patch updates the shared INTC code to use
set_irq_chained_handler() for intc_redirect_irq().

With this in place request_irq() on a merged irq
which has been redirected will now return -EINVAL
instead of 0 together with a crash. This thanks to
the protection of the IRQ_NOREQUEST flag set for
chained interrupt handlers.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-09 18:24:31 +09:00
Paul Mundt
7896cd0f5a Merge branch 'sh/intc-extension' 2010-02-09 18:24:14 +09:00
Magnus Damm
d519095344 sh: extend INTC with force_enable
Extend the shared INTC code with force_enable support to
allow keeping mask bits statically enabled. Needed by
upcoming INTC SDHI patches that mux together a bunch of
vectors to a single linux interrupt which is masked by
a priority register, but needs individual mask bits
constantly enabled.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-09 18:23:58 +09:00
Magnus Damm
577cd7584c sh: extend INTC with struct intc_hw_desc
This patch updates the INTC code by moving all vectors,
groups and registers from struct intc_desc to struct
intc_hw_desc.

The idea is that INTC tables should go from using the
macro(s) DECLARE_INTC_DESC..() only to using struct
intc_desc with name and hw initialized using the macro
INTC_HW_DESC(). This move makes it easy to initialize
an extended struct intc_desc in the future.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-09 18:23:57 +09:00
Magnus Damm
65a5b28f0a sh: Let INTC set IRQF_VALID on ARM platforms.
Reuse the SuperH INTC code on ARM by using set_irq_flags()
to set IRQF_VALID on ARM platforms.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-08 12:45:48 +09:00
Paul Mundt
e9867c5699 sh: Provide create_irq_nr() for dynamic IRQ creation by number.
This just reworks the existing create_irq_on_node() in to the new
create_irq_nr() which is generally exposed. This permits boards that
haven't converted over to sparseirq to try and use their existing ranges,
rather than having arbitrary vectors assigned to them.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02 17:35:13 +09:00
Magnus Damm
50dd3145a5 sh: update PFC to allow any enum in MARK lists
This patch updates the PFC code with some clarifying
comments together with a functional change. The change
allows function type of GPIO to select any type of enum
in their MARK lists. Without this patch only function
type of enums are allowed in MARK lists.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-20 02:50:57 +09:00
Paul Mundt
ca6f2d7faf sh: pfc: Fixup type mismatch in debug printks.
!!value works out to an int while we were still using %ld, so fix this up
and shut gcc up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-09 15:51:27 +09:00
Paul Mundt
0a753d58f9 sh: intc: Fixup compile breakage.
The resume from hibernation patch introduced build failure, fix it up..

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-09 14:36:16 +09:00
Francesco VIRLINZI
87a705dde4 sh: intc: Fixed resume from hibernation
This patch fixes the resume from hibernation
in the intc sysdev device when it manages 'redirect' irq

Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-09 12:35:18 +09:00
Paul Mundt
fd2cb0ce74 sh: pfc: pr_info() -> pr_debug() cleanups.
For some reason this was using pr_info() nested under an ifdef DEBUG.
While this is appealing in that it circumvents the effort necessary to
change ones loglevel, it's not terribly practical. So, convert it over
to pr_debug().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-30 12:15:04 +09:00
Paul Mundt
9cdae914b2 sh: pfc: Convert from ctrl_xxx() to __raw_xxx() I/O routines.
Now that the PFC code is exposed for other architectures, use the common
__raw_xxx() routines instead of the ctrl_xxx() ones. This will be needed
for ARM-based SH-Mobiles amongst others.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-30 12:10:41 +09:00
Magnus Damm
fae4339919 sh: Break out SuperH PFC code
This file breaks out the SuperH PFC code from
arch/sh/kernel/gpio.c + arch/sh/include/asm/gpio.h
to drivers/sh/pfc.c + include/linux/sh_pfc.h.

Similar to the INTC stuff. The non-SuperH specific
file location makes it possible to share the code
between multiple architectures.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-30 12:02:53 +09:00
Paul Mundt
45b9deaf14 sh: intc: Handle legacy IRQ reservation in vector map.
Different CPUs will have different starting vectors, with varying
amounts of reserved or unusable vector space prior to the first slot.
This introduces a legacy vector reservation system that inserts itself in
between the CPU vector map registration and the platform specific IRQ
setup. This works fine in practice as the only new vectors that boards
need to establish on their own should be dynamically allocated rather
than arbitrarily assigned. As a plus, this also makes all of the
converted platforms sparseirq ready.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-02 15:43:20 +09:00
Paul Mundt
1ce7b039b5 sh: intc: dynamic IRQ support.
This adds support for dynamic IRQ allocation/deallocation for all parts
using the SH-style vectored IRQs. While this is not inherently
INTC-specific, the INTC code is the main tie-in for vectored IRQ
registration, and is the only place that a full view of the utilized
vector map is possible.

The implementation is fairly straightforward, implementing a flat IRQ map
where each registered vector is reserved, allowing us to scan for holes
and dynamically wire up IRQs lazily later on in the boot stage. This
piggybacks on top of sparseirq in order to make the best use of the
available vector space.

Dynamic IRQs can be used for any number of things, ranging from MSI in
the SH-X3 PCIe case down to demux vectors for board FPGAs and system
controllers that presently allocate an arbitrary range. In the latter
case, this also allows those platforms to use sparseirq without blowing
up, which brings us one step closer to enabling sparseirq as the default
for all platform and CPU combinations.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-02 10:30:26 +09:00
Paul Mundt
9b798d50df sh: intc: Make ack_regs generally available.
Currently this is ifdef'ed under SH-3 and SH-4A, but there are other CPUs
that will need this as well. Given the size of the existing data
structures, this doesn't cause any additional cacheline utilization for
the existing users, so has no direct impact on the data structures.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 11:36:43 +09:00
Paul Mundt
913df4453f sh: maple: PHYSADDR() -> virt_to_phys() conversion.
Maple's abuse of PHYSADDR() likewise can be converted to virt_to_phys()
for its cases, although in practice this really wants explicit remapping.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-13 12:35:30 +09:00
Paul Mundt
1279b7f116 sh: Fix up simplified multi-evt handling under sparseirq.
This fixes up the simplified multi-evt handling when sparseirq support is
enabled. While vectors are redirected through the single unique masking
source, each one of the redirected vectors still requires its own backing
irq_desc, which needs to be manually allocated in the sparseirq case.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-31 15:15:33 +09:00
Pawel Moll
05ecd5a1f7 sh: Simplify "multi-evt" interrupt handling.
This patch changes the way in which "multi-evt" interrups are handled.
The intc_evt2irq_table and related intc_evt2irq() have been removed and
the "redirecting" handler is installed for the coupled interrupts.

Thanks to that the do_IRQ() function don't have to use another level
of indirection for all the interrupts...

Signed-off-by: Pawel Moll <pawel.moll@st.com>
Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-24 19:52:38 +09:00
Stuart Menefy
6000fc4d6f sh: Fixes some write posting issues in the interrupt handling for SH
It is possible for the CPU to re-enable it's interrupt block bit
before the write to the interrupt controller has actually masked out
the external interupt at the controller. We get around this by
reading back from the interrupt controller which will ensure the
write has happened.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-24 18:27:33 +09:00
Paul Mundt
11b6aa9555 sh: intc: alloc_bootmem() -> kzalloc() conversion.
Now that the slab allocators are available much earlier, this triggers a
the slab_is_available() warning when registering the interrupt
controller. Convert to kzalloc() with GFP_NOWAIT, as per the generic
changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-12 01:34:12 +03:00
Paul Mundt
54ff328b46 sh: Tie sparseirq in to Kconfig.
Now that the dependent patches are merged, we are ready to enable
sparseirq support. This simply adds the Kconfig option, and then converts
from the _cpu to the _node allocation routines to follow the upstream
sparseirq API changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-11 10:33:09 +03:00
Paul Mundt
2f3ed17e01 sh: Wrap irq_to_desc_alloc_cpu() around CONFIG_SPARSE_IRQ temporarily.
irq_to_desc_alloc_cpu() has been renamed to irq_to_desc_alloc_node() in
-next, but as we can not presently enable SPARSE_IRQ without the early
irq_desc alloc patch, protect it with an ifdef until the interface has
settled and we are ready to enable it system-wide.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22 13:47:52 +09:00
Paul Mundt
05ff3004d2 sh: irq: Teach ipr and intc about dynamically allocating irq_descs.
This hooks in irq_to_desc_alloc_cpu() to the necessary code paths in the
intc and ipr controller registration paths. As these are the primary call
paths for all SH CPUs, this alone will make all CPUs sparse IRQ ready.

There is the added benefit now that each CPU contains specific IPR and
INTC tables, so only the vectors with interrupt sources backing them will
ever see an irq_desc instantiation. This effectively packs irq_desc
down to match the CPU, rather than padding NR_IRQS out to cover the valid
vector range.

Boards with extra sources will still have to fiddle with the nr_irqs
setting, but they can continue doing so through the machvec as before.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-22 01:28:33 +09:00
Francesco VIRLINZI
7fd87b3f1a sh: intc: Added resume from hibernation support to the intc
It's required for all modules loaded in the previous runtime
session because not initilized duing the kernel start-up.

Signed-off-by: Francesco Virlinzi <francesco.virlinzi@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-06 08:55:19 -07:00
Magnus Damm
2dcec7a988 sh: intc: set_irq_wake() support
Add set_irq_wake() support to intc using sysdev and suspend.

The intc controllers are put on a list at registration time
and registered as sysdev devices later on during the boot.

The sysdev class suspend callback is used to find irqs with
wakeup enabled belonging to our intc controller. Such irqs
are simply enabled so wakeup interrupts may reach the cpu.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-02 11:19:57 +09:00
Magnus Damm
f7dd2548c4 sh: intc: install enable, disable and shutdown callbacks
Modify the intc code to install a disable callback. The current
solution without a disable callback results in use of the
generic default_disable() function. This function is a no-op
so suspend_device_irqs() will not disable any intc interrupts
at suspend time without this patch. Also, install enable and
shutdown callbacks while at it.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-02 11:19:29 +09:00
Randy Dunlap
ee665ecca6 maple: fix Error in kernel-doc notation
Fix kernel-doc error in maple (it's not kernel-doc):

  Error(drivers/sh/maple/maple.c:782): cannot understand prototype: 'struct bus_type maple_bus_type = '

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-03-29 08:12:39 -07:00
Linus Torvalds
0c93ea4064 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (61 commits)
  Dynamic debug: fix pr_fmt() build error
  Dynamic debug: allow simple quoting of words
  dynamic debug: update docs
  dynamic debug: combine dprintk and dynamic printk
  sysfs: fix some bin_vm_ops errors
  kobject: don't block for each kobject_uevent
  sysfs: only allow one scheduled removal callback per kobj
  Driver core: Fix device_move() vs. dpm list ordering, v2
  Driver core: some cleanup on drivers/base/sys.c
  Driver core: implement uevent suppress in kobject
  vcs: hook sysfs devices into object lifetime instead of "binding"
  driver core: fix passing platform_data
  driver core: move platform_data into platform_device
  sysfs: don't block indefinitely for unmapped files.
  driver core: move knode_bus into private structure
  driver core: move knode_driver into private structure
  driver core: move klist_children into private structure
  driver core: create a private portion of struct device
  driver core: remove polling for driver_probe_done(v5)
  sysfs: reference sysfs_dirent from sysfs inodes
  ...

Fixed conflicts in drivers/sh/maple/maple.c manually
2009-03-26 11:17:04 -07:00
Kay Sievers
1692713ee9 sh: struct device - replace bus_id with dev_name(), dev_set_name()
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
2009-03-24 16:38:21 -07:00
Paul Mundt
f033599aac sh: intc: Make missing unique IRQ mask warning more verbose.
This includes the IRQ number in addition to the vector, as not all
platforms wrap in with INTC_VECT().

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-06 17:56:58 +09:00
Kay Sievers
93fde77454 sh: struct device - replace bus_id with dev_name(), dev_set_name()
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-03-03 12:16:12 +09:00
Magnus Damm
bdaa6e8062 sh: multiple vectors per irq - base
Instead of keeping the single vector -> single linux irq mapping
we extend the intc code to support merging of vectors to a single
linux irq. This helps processors such as sh7750, sh7780 and sh7785
which have more vectors than masking ability. With this patch in
place we can modify the intc tables to use one irq per maskable
irq source. Please note the following:

 - If multiple vectors share the same enum then only the
   first vector will be available as a linux irq.

 - Drivers may need to be rewritten to get pending irq
   source from the hardware block instead of irq number.

This patch together with the sh7785 specific intc tables solves
DMA controller irq issues related to buggy interrupt masking.

Reported-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27 16:53:50 +09:00
Adrian McMenamin
b233b28eac sh: maple: Support block reads and writes.
This patch updates the maple bus to support asynchronous block reads
and writes as well as generally improving the quality of the code and
supporting concurrency (all needed to support the Dreamcast visual
memory unit - a driver will also be posted for that).

Changes in the bus driver necessitate some changes in the two maple bus
input drivers that are currently in mainline.

As well as supporting block reads and writes this code clean up removes
some poor handling of locks, uses an atomic status variable to serialise
access to devices and more robusly handles the general performance
problems of the bus.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-27 16:07:32 +09:00
Matt Fleming
93d546399c sh: maple: Do not pass SLAB_POISON to kmem_cache_create()
SLAB_POISON is not a valid flag for kmem_create_cache() unless
CONFIG_DEBUG_SLAB is set, so remove it from the flags argument.

Acked-by: Adrian McMenamin <adrian@newgolddream.dyndns.info>
Signed-off-by: Matt Fleming <mjf@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-12-16 16:40:32 +09:00
Paul Mundt
bbfbd8b151 sh: Move the shared INTC code out to drivers/sh/
The INTC code will be re-used across different architectures, so move
this out to drivers/sh/ and include/linux/sh_intc.h respectively.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-01 16:13:54 +09:00
Paul Mundt
6a9545bd95 sh: Fix up broken kerneldoc comments.
These were completely unparseable, so fix them up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 12:51:06 +09:00
Paul Mundt
617870632d maple: Kill useless private_data pointer.
We can simply wrap in to the dev_set/get_drvdata(), there's no reason
to track an extra level of private data on top of the struct device.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 10:58:24 +09:00
Paul Mundt
63870295de maple: Clean up maple_driver_register/unregister routines.
These were completely inconsistent. Clean these up to take a maple_driver
pointer directly for consistency.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-04 10:39:46 +09:00
Adrian McMenamin
1795cf48b3 sh/maple: clean maple bus code
This patch cleans up the handling of the maple bus queue to remove
the risk of races when adding packets. It also removes references to the
redundant connect and disconnect functions.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29 22:10:56 +09:00
Adrian McMenamin
bd49666974 maple: fix device detection
The maple bus driver that went into the kernel mainline in September 2007
contained some bugs which were revealed by the update of the kobj code
for the current release series. Unfortunately those bugs also helped
ensure maple devices were properly detected. This patch (against the
current git) now ensures that devices are properly detected again.

(A previous attempt to fix this by delaying initialisation only partially
 fixed this - as became apparent when the bus was fully loaded)

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-26 14:12:09 +09:00
Adrian McMenamin
b770d6b9b7 maple: improve detection of attached peripherals
Improve device detection for maple through longer delay

Experience suggests that a much longer delay in setting up the Maple bus
on the Dreamcast leads to better hardware detection.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:11 +09:00
Adrian McMenamin
b3c69e2481 maple: more robust device detection.
Replacement second-in-series patch:

This patch fixes up memory leaks and, by delaying initialisation, makes
device detection more robust.

It also makes clearer the difference between struct maple_device and
struct device, as well as cleaning up the interrupt request code
(without changing its function in any way).

Also now removes redundant registration checking.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:07 +09:00
Adrian McMenamin
b948237891 maple: fix up whitespace damage.
This patch is fundamentally about fixing up the whitespace problems
introduced by my previous patch (that brought the code into mainline). A
second patch will follow that will fix memory leaks. The two need to be
applied sequentially.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-14 14:22:07 +09:00
Paul Mundt
07782cec9b superhyway: Handle device_register() retval properly.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-11-07 11:13:55 +09:00
Adrian McMenamin
656e608747 maple: Fix maple bus compiler warning
The uevent API has changed from 2.6.22 and this patch eliminates
annoying compiler errors

Signed off by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-30 09:56:40 +09:00
Adrian McMenamin
17be2d2b1c sh: Add maple bus support for the SEGA Dreamcast.
The Maple bus is SEGA's proprietary serial bus for peripherals
(keyboard, mouse, controller etc). The bus is capable of some
(limited) hotplugging and operates at up to 2 M/bits.

Drivers of one sort or another existed/exist for 2.4 and a rudimentary
port, which didn't support the 2.6 device driver model was also in
existence.

This driver - for the bus logic itself and for the keyboard (other
drivers will follow) are based on the code and concepts of those old
drivers but have lots of completely rewritten parts.

I have the maple bus code as a built in now as that seems the sane and
rational way to handle something like that - you either want the bus
or you don't.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 15:55:55 +09:00