Commit Graph

459 Commits

Author SHA1 Message Date
Pierre Ossman 976d9276c8 mmc: enforce correct sg list
Now that we've fixed our only offender when it comes to strange sg
list, add a check so that future users keep the sg list proper with
regard to transfer size.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01 13:04:12 +02:00
Alex Dubov 14d836e749 mmc: cull sg list to match mmc request size
mmc layer may introduce additional (compared to block layer) limits on
request size. Culling of the sg list to match adjusted request size
simplifies the handling of such cases in the low level driver, allowing
it to skip block count checks while processing sg entries.

(fixes for wbsd and sdhci by Pierre Ossman)

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-05-01 13:04:12 +02:00
Eric Rannaud bf62456eb9 uevent: use add_uevent_var() instead of open coding it
Make use of add_uevent_var() instead of (often incorrectly) open coding it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Eric Rannaud <eric.rannaud@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Eric Miao 7053acbd78 [ARM] 4304/1: removes the unnecessary bit number from CKENnn_XXXX
This patch removes the unnecessary bit number from CKENnn_XXXX
definitions for PXA, so that

	CKEN0_PWM0 --> CKEN_PWM0
	CKEN1_PWM1 --> CKEN_PWM1
	...
	CKEN24_CAMERA --> CKEN_CAMERA

The reasons for the change of these defitions are:

1. they do not scale - they are currently valid for pxa2xx, but
definitely not valid for pxa3xx, e.g., pxa3xx has bit 3 for camera
instead of bit 24

2. they are unnecessary - the peripheral name within the definition
has already announced its usage, we don't need those bit numbers
to know which peripheral we are going to enable/disable clock for

3. they are inconvenient - think about this: a driver programmer
for pxa has to remember which bit in the CKEN register to turn
on/off

Another change in the patch is to make the definitions equal to its
clock bit index, so that

   #define CKEN_CAMERA  (24)

instead of

   #define CKEN_CAMERA  (1 << 24)

this change, however, will add a run-time bit shift operation in
pxa_set_cken(), but the benefit of this change is that it scales
when bit index exceeds 32, e.g., pxa3xx has two registers CKENA
and CKENB, totally 64 bit for this, suppose CAMERA clock enabling
bit is CKENB:10, one can simply define CKEN_CAMERA to be (32 + 10)
and so that pxa_set_cken() need minimum change to adapt to that.

Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-21 23:14:01 +01:00
Pavel Pisa 2cb3320b3f [ARM] 4256/1: i.MX/MX1 SDHC fix/workaround of SD card recognition problems
The SDHC controllers cannot process shorter transfers.
They has to be handled as longer ones, but it such case CRC
error is evaluated. There was a case in the code still,
where this error is not ignored as it should to be process
these transfers.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-03-12 16:49:37 +00:00
Pierre Ossman a715dfc7b9 sdhci: release irq during suspend
Release the device's irq during sleep, as all well-behaved drivers
should.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-03-06 13:38:49 +01:00
Mark Lord 62df67a523 sdhci: make isr tolerant of read errors
The interrupt is shared with another device, which resumes earlier than the
sdhci controller, and generates an interrupt.

The sdhci interrupt handler runs, sees 0xffffffff in its own device's
interrupt status, and tries to handle it..  The reason for the 0xffffffff
is that the device is still suspended, and *all* regs are reading back
0xffffffff.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-03-06 13:30:13 +01:00
Pierre Ossman cd9277c011 mmc: require explicit support for high-speed
The new high-speed timings are similar to each other and the old
system, but not identical. And although things "just work" most of
the time, sometimes it does not. So we need to start marking which
hosts are known to fully comply with the new timings.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-03-06 13:26:55 +01:00
Linus Torvalds 59b8175c77 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (117 commits)
  [ARM] 4058/2: iop32x: set ->broken_parity_status on n2100 onboard r8169 ports
  [ARM] 4140/1: AACI stability add ac97 timeout and retries
  [ARM] 4139/1: AACI record support
  [ARM] 4138/1: AACI: multiple channel support for IRQ handling
  [ARM] 4211/1: Provide a defconfig for ns9xxx
  [ARM] 4210/1: base for new machine type "NetSilicon NS9360"
  [ARM] 4222/1: S3C2443: Remove reference to missing S3C2443_PM
  [ARM] 4221/1: S3C2443: DMA support
  [ARM] 4220/1: S3C24XX: DMA system initialised from sysdev
  [ARM] 4219/1: S3C2443: DMA source definitions
  [ARM] 4218/1: S3C2412: fix CONFIG_CPU_S3C2412_ONLY wrt to S3C2443
  [ARM] 4217/1: S3C24XX: remove the dma channel show at startup
  [ARM] 4090/2: avoid clash between PXA and SA1111 defines
  [ARM] 4216/1: add .gitignore entries for ARM specific files
  [ARM] 4214/2: S3C2410: Add Armzone QT2410
  [ARM] 4215/1: s3c2410 usb device:  per-platform vbus_draw
  [ARM] 4213/1: S3C2410 - Update definition of ADCTSC_XY_PST
  [ARM] 4098/1: ARM: rtc_lock only used with rtc_cmos
  [ARM] 4137/1: Add kexec support
  [ARM] 4201/1: SMP barriers pair needed for the secondary boot process
  ...

Fix up conflict due to typedef removal in sound/arm/aaci.h
2007-02-19 13:18:39 -08:00
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00
Linus Torvalds a727fea99b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  tifm_sd: treat "status error" as normal command completion
  mmc: wbsd: Remove stray kunmap_atomic()
  mmc: sdhci: Stop asking for mail
  mmc: sdhci: Remove driver version
  mmc: wbsd: Remove driver version
2007-02-11 11:39:00 -08:00
Alex Dubov 12c834527b tifm_sd: treat "status error" as normal command completion
TI FlasMedia controller attempts to validate command responses and
issues a "status error" if response does not matches its perceived
(by controller) value. As mmc layer does its own validation we can
safely ignore the controller's opinion.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-11 16:28:22 +01:00
Pierre Ossman abc71668b5 mmc: wbsd: Remove stray kunmap_atomic()
There was one kunmap_atomic() left over from
4a0ddbd25a that was causing
crashes.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-11 16:27:13 +01:00
Al Viro 9f3bed5fdb [PATCH] TIFM should depend on PCI - TIFM_CORE leads to use of pci primitives
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09 08:28:48 -08:00
Pierre Ossman acf1da4522 mmc: sdhci: Stop asking for mail
We get enough error reports without having to ask for it.
Remove notices about mailing the development list.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-09 08:29:19 +01:00
Pierre Ossman 52fbf9c976 mmc: sdhci: Remove driver version
The driver version was only really meaningful when it was an
out-of-tree driver. Now we can use the version of the kernel.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-09 08:23:41 +01:00
Pierre Ossman 1615cc224e mmc: wbsd: Remove driver version
The driver version was only really meaningful when it was an
out-of-tree driver. Now we can use the version of the kernel.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-09 08:19:07 +01:00
Andrew Victor 93a3ddc201 [ARM] 4151/1: AT91 / AVR32: Move at91_pdc.h to linux/atmel_pdc.h
The Atmel AT91 and AVR32 processor architectures share many of the same
peripherals.  The PDC (Peripheral Data Controller) registers are also
implemented within in a number of the on-chip peripherals (eg, USART,
MMC, SPI, SSC, etc).

In a attempt not to duplicate the register definitions in each
peripheral, or in each architecture, the at91_pdc.h header in
asm-arm/arch-at91 and asm-avr32/arch-at32ap has been replaced with
linux/atmel_pdc.h.

The definitions have also been renamed from AT91_PDC_* to ATMEL_PDC_*,
and the drivers updated accordingly.

Original patch from Nicolas Ferre.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-08 15:13:47 +00:00
Pierre Ossman f9d429a2e5 mmc: tifm: replace kmap with page_address
Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:12 +01:00
Pierre Ossman c70840e819 mmc: sdhci: fix voltage ocr
Some bad if-clauses caused the driver to just report the highest
supported voltage, not all.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:12 +01:00
Pierre Ossman 2a22b14edf mmc: sdhci: replace kmap with page_address
Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:12 +01:00
Pierre Ossman 4a0ddbd25a mmc: wbsd: replace kmap with page_address
Since we actively avoid highmem, calling kmap_atomic() instead
of page_address() is effectively only obfuscation.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:11 +01:00
Pierre Ossman df1c4b7bf7 mmc: handle pci_enable_device() return value in sdhci
Make sure we report back any errors from pci_enable_device().

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:11 +01:00
Pierre Ossman 397411e67f mmc: Proper unclaim in mmc_block
Make sure we release the claim on the host even on failure.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:11 +01:00
Pierre Ossman ae06eaf9ab mmc: Graceful fallback for fancy features
MMC high-speed, wide bus support and SD high-speed
are functions that aren't critical for correct
operation of the card. As such, they shouldn't mark
the card as bad or dead when there is a failure
activating these features.

This is needed in particular on some really stupid
hardware (e.g. Winbond's) where not all data transfer
commands are supported.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:11 +01:00
Pierre Ossman 5ba593a972 mmc: Handle wbsd's stupid command list
The wbsd hardware is so incredibly brain damaged that it has an internal
list of commands that result in data transfers. The result being that
commands that aren't on this list aren't supported.

Instead of locking up, waiting for a data interrupt that will never come,
we try to fail a bit more gracefully.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:11 +01:00
Pierre Ossman 55db890a83 mmc: Allow host drivers to specify max block count
Many controllers have an upper limit on the number of blocks that can be
transferred in one request. Allow the host drivers to specify this and make
sure we avoid hitting this limit.

Also change the max_sectors field to avoid confusion. This makes it map
less directly to the block layer limits, but as they didn't apply directly
on MMC cards anyway, this isn't a great loss.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:10 +01:00
Pierre Ossman fe4a3c7a20 mmc: Allow host drivers to specify a max block size
Most controllers have an upper limit on the block size. Allow the host
drivers to specify this and make sure we avoid hitting this limit.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:10 +01:00
Alex Dubov dba4accab1 tifm_sd: add suspend and resume functionality
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:10 +01:00
Alex Dubov 50743f4cb1 Remove unused return value from signal_irq callback
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:08 +01:00
Alex Dubov 2e8ce5e741 tifm_sd: prettify
This patch introduces no semantic changes - it is here for estetic purposes.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:08 +01:00
Alex Dubov 8e02f8581c tifm_sd: restructure initialization, removal and command handling
In order to support correct suspend and resume several changes were needed:
1. Switch from work_struct to tasklet for command handling. When device
suspend is called workqueues are already frozen and can not be used.
2. Separate host initialization code from driver's probe and don't rely
on interrupts for host initialization. This, in turn, addresses two
problems:
 a) Resume needs to re-initialize the host, but can not assume that
    device interrupts were already re-armed.
 b) Previously, probe will return successfully before really knowing
    the state of the host, as host interrupts were not armed in time.
    Now it uses polling to determine the real host state before returning.
3. Separate termination code from driver's remove. Termination may be caused
by resume, if media changed type or became unavailable during suspend.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:07 +01:00
Alex Dubov 83d420ba92 tifm_sd: fix hardware timeout setup
The register access order when setting hardware timeout was incorrect and
causing problems (wrong timeout intervals). This is now fixed.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:07 +01:00
Alex Dubov 0803dd0c25 tifm_sd: Switch software timeout handler from work_struct to timer
Two changes are introduced to software timeout handler in order to simplify
its management:
1. The implementation is switched from work_struct to timer
2. Previously, software timeout was rearmed with each interrupt. Now,
current request must complete entirely within timeout interval.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:07 +01:00
Alex Dubov 255ef22e89 tifm_sd: use kmap_atomic instead of kmap for PIO data buffer
Data buffer for PIO transfer used to be mapped in advance with kmap.
Abolish it in favor of on-demand kmap_atomic.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:07 +01:00
Alex Dubov 1289335a2a tifm_sd: alter order of the states in the command handler
Previously, stop command was issued right after BRS (block received/sent)
event. Stop command completion event could interfere with the card busy
event, causing miscount of the written blocks.
This patch ensures that stop command issued as last action for a
particular command, after DMA sompletion event and written block
count verification.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:07 +01:00
Philip Langdale fba68bd2da mmc: Add support for SDHC cards
Thanks to the generous donation of an SDHC card by John Gilmore, and
the surprisingly enlightened decision by the SD Card Association to
publish useful specs, I've been able to bash out support for SDHC. The
changes are not too profound:

i) Add a card flag indicating the card uses block level addressing and
check it in the block driver. As we never took advantage of byte-level
addressing, this simply involves skipping the block -> byte
translation when sending commands.

ii) The layout of the CSD is changed - a set of fields are discarded
to make space for a larger C_SIZE. We did not reference any of the
discarded fields except those related to the C_SIZE.

iii) Read and write timeouts are fixed values and not calculated from
CSD values.

iv) Before invoking SEND_APP_OP_COND, we must invoke the new
SEND_IF_COND to inform the card we support SDHC.

Signed-off-by: Philipl Langdale <philipl@overt.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:07 +01:00
Darren Salt 9e9dc5f29f mmc: Power quirk for ENE controllers
Support for these devices was broken for 2.6.18-rc1 and later by commit
146ad66eac, which added voltage level support.

This restores the previous behaviour for these devices by ensuring that when
the voltage is changed, only one write to set the voltage is performed.

It may be that both writes are needed if the voltage is being changed between
two non-zero values or that it's safe to ensure that only one write is done
if the hardware only supports one voltage; I don't know whether either is the
case nor can I test since I have only the one SD reader (1524:0550), and it
supports just the one voltage.

Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:06 +01:00
Pierre Ossman 11354d03af mmc: let host be parent of cards
Change the parent of cards to be a specific host (a class
device), not the physical controller. This is particularly
useful when the hardware has multiple slots, meaning
multiple hosts.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:06 +01:00
Pierre Ossman f22ee4edf6 mmc: replace host->card_busy
As card_busy was only used to indicate if the host was exclusively
claimed and not really used to identify a particular card, replacing
it with just a boolean makes things a lot more easily understandable.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:06 +01:00
Manuel Lauss 279bc44509 mmc: au1xmmc: return errors for unknown response types
au1xmmc: return error when encountering unhandled/unknown response type.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:06 +01:00
Manuel Lauss 82999770d6 mmc: au1xmmc: implement proper ro switch detection
au1xmmc: implement proper R/O switch detection.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-02-04 20:54:05 +01:00
Philip Langdale 6f949909e8 mmc: Correct definition of R6
During development of SDHC support, it was discovered that the definition
for R6 was incorrect. This patch fixes that and patches the drivers that
do switch on the response type.

Signed-off-by: Philip Langdale <philipl@overt.org>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: Pavel Pisa <ppisa@pikron.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-01-15 06:44:03 +01:00
Carlos Eduardo Aguiar 1b3b263184 omap: Update MMC response types
This patch is a fix in order to update MMC response types. This modification is
needed to allow SD card support on OMAP platforms.

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Yuha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-01-15 06:39:00 +01:00
Linus Torvalds c70a1ce873 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  MMC: at91 mmc linkage updates
  ARM: OMAP: fix MMC workqueue changes
2007-01-10 15:55:10 -08:00
Russell King e47c222b22 [ARM] Fix potential MMCI bug
The MMCI driver might end up aborting the initial command and leaving
the data part of the command sequence still in place.  Avoid this
problem by ensuring that any data sequence is properly cleared out
when a command completes.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-01-08 19:49:51 +00:00
David Brownell a26b498c96 MMC: at91 mmc linkage updates
Linker level tweaks for the AT91 MMC driver:

  - fix a wrongly-exported symbol
  - move probe() to init section
  - move remove() to exit section

When this driver is statically linked, this patch shrinks the driver's
runtime I-space footprint by over 20% (950 bytes).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-01-04 07:03:57 +01:00
Kyungmin Park 3947a3907f ARM: OMAP: fix MMC workqueue changes
fix OMAP MMC workqueue in recent workqueue change

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2007-01-04 07:03:38 +01:00
Andrew Victor 99eeb8dfb1 AT91 MMC update for 2.6.19
The driver is usable on the newer SAM9 processors so replace all text
references to AT91RM9200 with just AT91.

The controller bug where all the words are byte-swapped is fixed on the
AT91SAM9 processors.  The byte-swapping work-around therefore only needs
to be done if cpu_is_at91rm9200().
[Original patch from Wojtek Kaniewski]

The AT91RM9200 and AT91SAM9260 processors support two MMC/SD slots - the
slot which is connected is now passed via the platform_data and the
correct slot selected in the AT91_MCI_SDCR register.

The driver should not be calling at91_set_gpio_output() since the VCC
pin should have already been configured as an output in the
processor/board setup code.  The driver should call
at91_set_gpio_value().

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 12:43:35 +01:00
Pierre Ossman a98087cf81 mmc: Change SDHCI iomem error to a warning
Some controllers report an invalid iomem size, but seem to work
correctly anyway. Change our current error to just a warning and
hope it doesn't cause too much problems.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:48:42 +01:00
Vitaly Wool 7b30d281b9 mmc: fix "prev->state: 2 != TASK_RUNNING??" problem on SD/MMC card removal
Currently on SD/MMC card removal the system exhibits the following message (the platform is ARM Versatile):

    prev->state: 2 != TASK_RUNNING??
    mmcqd/762[CPU#0]: BUG in __schedule at linux-2.6/kernel/sched.c:3826

(akpm: someone tried to fix this, but it's still wrong)

Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:48:16 +01:00
Andrew Victor f3a8efa90b AT91 MMC 5 : Minor cleanups
A number of small cleanups to the AT91RM9200 MMC driver:
 - fix warnings generated by pr_debug().
 - prepend "AT91 MMC:" to printk() messages.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:47:21 +01:00
Andrew Victor df05a303e3 AT91 MMC 4 : Interrupt handler cleanup
This patch simplifies the AT91RM9200 MMC interrupt handler code so that
it doesn't re-read the Interrupt Status and Interrupt Mask registers
multiple times.

Also defined AT91_MCI_ERRORS instead of using the hard-coded 0xffff0000.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:47:12 +01:00
Andrew Victor 3dd3b039d4 AT91 MMC 3 : Move global mci_clk variable
Move the global 'mci_clk' variable into the local 'at91mci_host'
structure.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:47:02 +01:00
Andrew Victor 17ea0595f4 AT91 MMC 2 : Use platform resources
Use the I/O base-address and IRQ passed to the driver via the
platform_device resources instead of using hardcoded values.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:46:51 +01:00
Andrew Victor e0b19b8365 AT91 MMC 1: Pass host structure.
The I/O base address is now stored in the 'at91mci_host' structure.  We
therefore have to pass this structure to at91_mci_read() and
at91_mci_write().

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-11 09:46:37 +01:00
Linus Torvalds 1709775828 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: fix au1xmmc build error
  mmc: pxamci compilation fix
2006-12-08 08:47:07 -08:00
David Howells f0d1b0b30d [PATCH] LOG2: Implement a general integer log2 facility in the kernel
This facility provides three entry points:

	ilog2()		Log base 2 of unsigned long
	ilog2_u32()	Log base 2 of u32
	ilog2_u64()	Log base 2 of u64

These facilities can either be used inside functions on dynamic data:

	int do_something(long q)
	{
		...;
		y = ilog2(x)
		...;
	}

Or can be used to statically initialise global variables with constant values:

	unsigned n = ilog2(27);

When performing static initialisation, the compiler will report "error:
initializer element is not constant" if asked to take a log of zero or of
something not reducible to a constant.  They treat negative numbers as
unsigned.

When not dealing with a constant, they fall back to using fls() which permits
them to use arch-specific log calculation instructions - such as BSR on
x86/x86_64 or SCAN on FRV - if available.

[akpm@osdl.org: MMC fix]
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David Howells <dhowells@redhat.com>
Cc: Wojtek Kaniewski <wojtekka@toxygen.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:51 -08:00
Linus Torvalds ea14fad0d4 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits)
  [ARM] 4002/1: S3C24XX: leave parent IRQs unmasked
  [ARM] 4001/1: S3C24XX: shorten reboot time
  [ARM] 3983/2: remove unused argument to __bug()
  [ARM] 4000/1: Osiris: add third serial port in
  [ARM] 3999/1: RX3715: suspend to RAM support
  [ARM] 3998/1: VR1000: LED platform devices
  [ARM] 3995/1: iop13xx: add iop13xx support
  [ARM] 3968/1: iop13xx: add iop13xx_defconfig
  [ARM] Update mach-types
  [ARM] Allow gcc to optimise arm_add_memory a little more
  [ARM] 3991/1: i.MX/MX1 high resolution time source
  [ARM] 3990/1: i.MX/MX1 more precise PLL decode
  [ARM] 3986/1: H1940: suspend to RAM support
  [ARM] 3985/1: ixp4xx clocksource cleanup
  [ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2)
  [ARM] 3994/1: ixp23xx: fix handling of pci master aborts
  [ARM] 3981/1: sched_clock for PXA2xx
  [ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit
  [ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period
  [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter
  ...
2006-12-07 15:40:39 -08:00
David Howells 4c1ac1b491 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	drivers/infiniband/core/iwcm.c
	drivers/net/chelsio/cxgb2.c
	drivers/net/wireless/bcm43xx/bcm43xx_main.c
	drivers/net/wireless/prism54/islpci_eth.c
	drivers/usb/core/hub.h
	drivers/usb/input/hid-core.c
	net/core/netpoll.c

Fix up merge failures with Linus's head and fix new compilation failures.

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-12-05 14:37:56 +00:00
Yoichi Yuasa bf8c80a6a5 mmc: fix au1xmmc build error
This patch has fixed the following build error abou au1xmmc.

drivers/mmc/au1xmmc.c: In function `au1xmmc_poll_event':
drivers/mmc/au1xmmc.c:835: warning: unused variable `status'
drivers/mmc/au1xmmc.c: At top level:
drivers/mmc/au1xmmc.c:878: error: parse error before "const"
drivers/mmc/au1xmmc.c: In function `au1xmmc_probe':
drivers/mmc/au1xmmc.c:909: error: `au1xmmc_ops' undeclared (first use in this function)
drivers/mmc/au1xmmc.c:909: error: (Each undeclared identifier is reported only once
drivers/mmc/au1xmmc.c:909: error: for each function it appears in.)
drivers/mmc/au1xmmc.c: At top level:
drivers/mmc/au1xmmc.c:659: warning: 'au1xmmc_request' defined but not used
drivers/mmc/au1xmmc.c:719: warning: 'au1xmmc_set_ios' defined but not used
make[2]: *** [drivers/mmc/au1xmmc.o] Error 1
make[1]: *** [drivers/mmc] Error 2
make: *** [drivers] Error 2

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-05 09:10:30 +01:00
Sascha Hauer 9e86619b6d mmc: pxamci compilation fix
since commit fcaf71fd51
struct mmc_host does not have a dev field. Retrieve the device with
mmc_dev() instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-05 09:10:14 +01:00
Linus Torvalds cdb54fac35 Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: correct request error handling
  mmc: Flush block queue when removing card
  mmc: sdhci high speed support
  mmc: Support for high speed SD cards
  mmc: Fix mmc_delay() function
  mmc: Add support for mmc v4 wide-bus modes
  [PATCH] mmc: Add support for mmc v4 high speed mode
  trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255
  Make general code cleanups
  Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags
  Platform device error handling cleanup
  Move register definitions away from the header file
  Change OMAP_MMC_{READ,WRITE} macros to use the host pointer
  Replace base with virt_base and phys_base
  mmc: constify mmc_host_ops vectors
  mmc: remove kernel_thread()
2006-12-02 08:29:04 -08:00
Linus Torvalds 4549df891a Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6
* 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
  ...
2006-12-01 16:41:07 -08:00
Greg Kroah-Hartman fcaf71fd51 Driver core: convert mmc code to use struct device
Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:52:00 -08:00
Pierre Ossman 8b7feff881 mmc: correct request error handling
We need to jump to the part of just flushing the request
when we cannot claim the bus. Sending commands to a bus
we do not own will give unpredictable results.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 19:06:19 +01:00
Pierre Ossman 89b4e133af mmc: Flush block queue when removing card
After mmc_block's remove function has exited, we must not
touch the card structure in any way. This means we not only
must remove the gendisk, we must also flush out any
remaning requests already queued up.

We previously removed the disk, but didn't flush it,
causing oops:es when removing a card in the middle of a
transfer.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 19:06:05 +01:00
Pierre Ossman 077df88483 mmc: sdhci high speed support
The SDHCI spec implies that is is incorrect to set a clock
frequency above 25 MHz without setting the high speed bit.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:54:10 +01:00
Pierre Ossman 7ccd266e67 mmc: Support for high speed SD cards
Modern SD cards support a clock speed of 50 MHz. Make sure we test for
this capability and do the song and dance required to activate it.

Activating high speed support actually modifies the TRAN_SPEED field
of the CSD. But as the spec says that the cards must report 50 MHz,
we might as well skip re-reading the CSD.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:53:37 +01:00
Pierre Ossman 73778120c4 mmc: Fix mmc_delay() function
Several fixes for mmc_delay():

 * Repair if-clause that was supposed to detect sub-hz delays.
 * Change yield() to cond_resched() as yield() no longer has the
   semantics we desire.
 * mmc_delay() is used to guarantee protocol delays, so we cannot
   return early (i.e. use _interruptable).

Based on patch by Amol Lad.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:27:23 +01:00
Philip Langdale e45a1bd20f mmc: Add support for mmc v4 wide-bus modes
This change adds support for the mmc4 4-bit wide-bus mode.

The mmc4 spec defines 8-bit and 4-bit transfer modes. As we do not support
any 8-bit hardware, this patch only adds support for the 4-bit mode, but
it can easily be built upon when the time comes.

The 4-bit mode is electrically compatible with SD's 4-bit mode but the
procedure for turning it on is different. This patch implements only
the essential parts of the procedure as defined by the spec. Two additional
steps are recommended but not compulsory. I am documenting them here so
that there's a record.

1) A bus-test mechanism is implemented using dedicated mmc commands which allow
for testing the functionality of the data bus at the electrical level. This is
pretty paranoid and they way the commands work is not compatible with the mmc
subsystem (they don't set valid CRC values).

2) MMC v4 cards can indicate they would like to draw more than the default
amount of current in wide-bus modes. We currently will never switch the card
into a higher draw mode. Supposedly, allowing the card to draw more current
will let it perform better, but the specs seem to indicate that the card will
function correctly without the mode change. Empirical testing supports this
interpretation.

Signed-off-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:22:44 +01:00
Philip Langdale bce40a36de [PATCH] mmc: Add support for mmc v4 high speed mode
This adds support for the high-speed modes defined by mmc v4
(assuming the host controller is up to it). On a TI sdhci controller,
it improves read speed from 1.3MBps to 2.3MBps. The TI controller can
only go up to 24MHz, but everything helps. Another person has taken
this basic patch and used it on a Nokia 770 to get a bigger boost
because that controller can run at 48MHZ.

Signed-off-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:21:32 +01:00
Marcin Juszkiewicz 9c9c26188f trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255
PXA MMC driver supports not only PXA255 but also PXA250 and newer ones

Signed-off-by: Marcin Juszkiewicz <hrw@openembedded.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:06:36 +01:00
Juha Yrjola juha.yrjola c5cb431d27 Make general code cleanups
This patch is part of Juha Yrjola's and Komal Shah's earlier patch to
make general code cleanups

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Komal Shah <komal_shah802003 <at> yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:02:03 +01:00
Tony Lindgren tony f4204fdf05 Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags
This patch is part of Tony Lindgren's earlier patch to add
MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags in omap.c

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Tony Lindgren <tony <at> atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:01:44 +01:00
Juha Yrjola juha.yrjola 81ca70343f Platform device error handling cleanup
This patch is part of Juha Yrjola's earlier patch to add platform device
error handling and a BUG_ON to verify if host == NULL

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:01:32 +01:00
Juha Yrjola juha.yrjola 0551f4df35 Move register definitions away from the header file
This patch is part of Juha Yrjola's earlier patch to move register
definitions away from the header file and the header file is removed.

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:01:16 +01:00
Juha Yrjola juha.yrjola 3342ee8bfa Change OMAP_MMC_{READ,WRITE} macros to use the host pointer
This patch is part of Juha Yrjola's earlier patch to change
OMAP_MMC_{READ,WRITE} macros to use the host pointer

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:00:34 +01:00
Juha Yrjola juha.yrjola 89783b1e44 Replace base with virt_base and phys_base
This patch is part of Juha Yrjola's earlier patch to replace base
with virt_base and phys_base

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:00:11 +01:00
David Brownell ab7aefd0b3 mmc: constify mmc_host_ops vectors
Now that mmc_host_ops can be constified, update the various drivers
to constify those method tables and shrink the writable data segment.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 17:58:53 +01:00
Christoph Hellwig 87598a2bd4 mmc: remove kernel_thread()
Replace kernel_thread() with kthread_run()/kthread_stop().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 17:56:46 +01:00
Andrew Victor 58a0cd7887 [ARM] 3963/1: AT91: Update configuration files
A number of configuration file changes.

These are mainly to replace references to ARCH_AT91RM9200 and
ARCH_AT91SAM9261 with the common/generic ARCH_AT91.  That way we don't
need to mention every specific AT91 processor explicitly.

Also adds the configuration option for AT91SAM9260-EK and AT91SAM9261-EK
boards.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-01 16:56:43 +00:00
Andrew Victor 55d8baee4a [ARM] 3954/1: AT91: Update drivers for new headers
This patch updates the drivers (and other files) which include the
hardware headers.  This fixes the breakage introduced in patches 3950/1
and 3951/1 (those patches were getting big).

The AVR32 architecture uses the same serial driver and had its own copy
of at91rm9200_pdc.h.  Renamed it to at91_pdc.h

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30 22:51:40 +00:00
Eric Sesterhenn d99c590985 BUG_ON conversion for drivers/mmc/omap.c
This patch converts a if () BUG(); construct to BUG_ON();
which occupies less space, uses unlikely and is safer when
BUG() is disabled.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-11-30 05:27:38 +01:00
David Howells c4028958b6 WorkStruct: make allyesconfig
Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-22 14:57:56 +00:00
Timo Teras 63ef731aa6 MMC: Do not set unsupported bits in OCR response
The card might go to inactive state (according to specification), if
there are unsupported bits set in the OCR.

Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-11-09 07:23:54 +01:00
Timo Teras 25a122fd0d MMC: Poll card status after rescanning cards
Some broken cards seem to process CMD1 even in stand-by state. The result is
that the card replies with ILLEGAL_COMMAND error for the next command sent
after rescanning. Currently the next command is select card, which would
return the error. But CMD7 does actually succeed and retries of the command
will timeout. The workaround is to poll card status after CMD1 to clear the
pending error.

Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-11-09 07:23:37 +01:00
Al Viro 2099c99e3b [PATCH] missing includes of io.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-24 22:01:11 -07:00
Al Viro e4cad1b5a4 [PATCH] passing pointer to setup_timer() should be via unsigned long
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-10 15:37:22 -07:00
Al Viro e069d79d23 [PATCH] tifm __iomem annotations, NULL noise removal
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-09 14:19:08 -07:00
Pierre Ossman ec5a19dd93 [PATCH] mmc: multi sector write transfers
SD cards extend the protocol by allowing the host to query a card how many
blocks were successfully stored on the medium.  This allows us to safely write
chunks of blocks at once.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 08:53:41 -07:00
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Pierre Ossman 176f00ffed [PATCH] mmc: properly use the new multi block-write error handling
Use the new multi block-write error reporting flag and properly tell the block
layer how much data was transferred before the error.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:15 -07:00
Pierre Ossman 7104e2d5a8 [PATCH] mmc: use own work queue
The MMC layer uses the standard work queue for doing card detection.  As this
queue is shared with other crucial subsystems, the effects of a long (and
perhaps buggy) detection can cause the system to be unusable.  E.g.  the
keyboard stops working while the detection routine is running.

The solution is to add a specific mmc work queue to run the detection code in.
This is similar to how other subsystems handle detection (a full kernel
thread is the most common theme).

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:15 -07:00
Pierre Ossman 8a4da1430f [PATCH] mmc: avoid some resets without card
Some Ricoh controllers only respect a full reset when there is no card in the
slot.  As we wait for the reset to complete, we must avoid even requesting
those resets on the buggy controllers.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Pierre Ossman 5f25a66f6b [PATCH] mmc: fix MMIO vs memory races in sdhci
Sprinkle some mmiowb() where needed (writeX() before unlock()).

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Alex Dubov f956512999 [PATCH] mmc: driver for TI FlashMedia card reader - Kconfig/Makefile
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Cc: Daniel Qarras <dqarras@yahoo.com>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Alex Dubov 4020f2d7f0 [PATCH] mmc: driver for TI FlashMedia card reader - source
Driver for TI Flash Media card reader.  At present, only MMC/SD cards are
supported.

[akpm@osdl.org: cleanups, build fixes]
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Cc: Daniel Qarras <dqarras@yahoo.com>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Pierre Ossman 643f720cea [PATCH] mmc (mainly): add "or later" clause to licence statement.
Clarify my (Pierre's) position on which GPL versions apply.  The patch only
touches the source files where I am the only major author.  The people who
have made the minor commits to the files have been contacted and have no
issues with this change.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:23 -07:00
David Howells 9361401eb7 [PATCH] BLOCK: Make it possible to disable the block layer [try #6]
Make it possible to disable the block layer.  Not all embedded devices require
it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require
the block layer to be present.

This patch does the following:

 (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev
     support.

 (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls
     an item that uses the block layer.  This includes:

     (*) Block I/O tracing.

     (*) Disk partition code.

     (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.

     (*) The SCSI layer.  As far as I can tell, even SCSI chardevs use the
     	 block layer to do scheduling.  Some drivers that use SCSI facilities -
     	 such as USB storage - end up disabled indirectly from this.

     (*) Various block-based device drivers, such as IDE and the old CDROM
     	 drivers.

     (*) MTD blockdev handling and FTL.

     (*) JFFS - which uses set_bdev_super(), something it could avoid doing by
     	 taking a leaf out of JFFS2's book.

 (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and
     linux/elevator.h contingent on CONFIG_BLOCK being set.  sector_div() is,
     however, still used in places, and so is still available.

 (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and
     parts of linux/fs.h.

 (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.

 (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.

 (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK
     is not enabled.

 (*) fs/no-block.c is created to hold out-of-line stubs and things that are
     required when CONFIG_BLOCK is not set:

     (*) Default blockdev file operations (to give error ENODEV on opening).

 (*) Makes some /proc changes:

     (*) /proc/devices does not list any blockdevs.

     (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.

 (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.

 (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if
     given command other than Q_SYNC or if a special device is specified.

 (*) In init/do_mounts.c, no reference is made to the blockdev routines if
     CONFIG_BLOCK is not defined.  This does not prohibit NFS roots or JFFS2.

 (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return
     error ENOSYS by way of cond_syscall if so).

 (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if
     CONFIG_BLOCK is not set, since they can't then happen.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30 20:52:31 +02:00
Jens Axboe 4aff5e2333 [PATCH] Split struct request ->flags into two parts
Right now ->flags is a bit of a mess: some are request types, and
others are just modifiers. Clean this up by splitting it into
->cmd_type and ->cmd_flags. This allows introduction of generic
Linux block message types, useful for sending generic Linux commands
to block devices.

Signed-off-by: Jens Axboe <axboe@suse.de>
2006-09-30 20:23:37 +02:00
Linus Torvalds ebdea46fec Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits)
  [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms
  [ARM] 3855/1: Add generic time support
  [ARM] 3873/1: S3C24XX: Add irq_chip names
  [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips
  [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23
  [ARM] nommu: confirms the CR_V bit in nommu mode
  [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores.
  [ARM] 3870/1: AT91: Start removing static memory mappings
  [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards
  [ARM] 3868/1: AT91 hardware header update
  [ARM] 3867/1: AT91 GPIO update
  [ARM] 3866/1: AT91 clock update
  [ARM] 3865/1: AT91RM9200 header updates
  [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series
  [ARM] kthread: switch arch/arm/kernel/apm.c
  [ARM] Off-by-one in arch/arm/common/icst*
  [ARM] 3864/1: Refactore sharpsl_pm
  [ARM] 3863/1: Add Locomo SPI Device
  [ARM] 3847/2:  Convert LOMOMO to use struct device for GPIOs
  [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h
  ...
2006-09-28 14:40:39 -07:00
Linus Torvalds fecf3404f4 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc:
  [MMC] Don't check READY_FOR_DATA when reading
  [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hosts
  [MMC] Add multi block-write capability
  [MMC] Remove data->blksz_bits member
  [MMC] Convert mmci to use data->blksz rather than data->blksz_bits
2006-09-28 14:23:55 -07:00
Andrew Victor 72729910c3 [ARM] 3865/1: AT91RM9200 header updates
This is more preparation for adding support for the new Atmel AT91SAM9
processors.

Changes include:
- Replace AT91_BASE_* with AT91RM9200_BASE_*
- Replace AT91_ID_* with AT91RM9200_ID_*
- ROM, SRAM and UHP address definitions moved to at91rm9200.h.
- The raw AT91_P[ABCD]_* definitions are now depreciated in favour of
the GPIO API.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-28 11:52:05 +01:00
Ralf Baechle 53e62d3aaa [PATCH] Alchemy: Delete unused pt_regs * argument from au1xxx_dbdma_chan_alloc
The third argument of au1xxx_dbdma_chan_alloc's callback function is not
used anywhere.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:54 -07:00
Russell King 2ed6d22cec [MMC] Don't check READY_FOR_DATA when reading
There's no point checking to see if the card is ready to accept
data when we're reading from it - sending the command only wastes
precious bus bandwidth.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-24 10:46:43 +01:00
Russell King 42431acbac [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hosts
Some MMC hosts can only handle log2 block sizes.  Unfortunately,
the MMC password support needs to be able to send non-log2 block
sizes.  Provide a capability so that the MMC password support can
decide whether it should use this support or not.

The unfortunate side effect of this host limitation is that any
MMC card protected by a password which is not a log2 block size
can not be accessed on a host which only allows a log2 block size.

This change just adds the flag.  The MMC password support code
needs updating to use it (if and when it is finally submitted.)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-24 10:44:09 +01:00
Russell King db53f28b3a [MMC] Add multi block-write capability
Add a capability flag for drivers to set when they can perform multi-
block transfers to cards _and_ correctly report the number of bytes
transferred should an error occur.

The last point is very important - if a driver reports more bytes than
were actually accepted by the card and an error occurs, there is the
possibility for data loss.

Pierre Ossman provided the patch for wbsd and sdhci.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-16 11:57:49 +01:00
Russell King 132919ba80 [MMC] Remove data->blksz_bits member
data->blksz_bits is unused now - remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-16 11:54:04 +01:00
Russell King 3bc87f243f [MMC] Convert mmci to use data->blksz rather than data->blksz_bits
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-16 11:50:29 +01:00
Pierre Ossman 6fe9febb8a [MMC] Always use a sector size of 512 bytes
Both MMC and SD specifications specify (although a bit unclearly in
the MMC case) that a sector size of 512 bytes must always be
supported by the card.

Cards can report larger "native" size than this, and cards >= 2 GB
even must do so. Most other readers use 512 bytes even for these
cards. We should do the same to be compatible.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07 16:01:30 +01:00
Russell King d773d72551 [MMC] Cleanup 385e3227d4
Rather than having two places which independently calculate the
timeout for data transfers, make it a library function instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
2006-09-07 15:57:12 +01:00
Pavel Pisa 148f93d59c [ARM] 3751/1: i.MX/MX1 SD/MMC use 512 bytes request for SCR read
Patch from Pavel Pisa

This is another approach to SDHC deficiency workaround.
It seems, that previous solution based on 16 bytes (FIFO length size)
read is still timing sensitive on genirq and fully preemptive kernels.
The new solution is backuped by M9328 UM statement, that only 512 byte
block are working properly and by 2.4.26 FreeScale's SDHC code.

Jay Monkman reports significant improvement on code based
on this driver after applying this change on MX21 as well.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07 15:53:29 +01:00
Pierre Ossman 385e3227d4 [MMC] Fix SD timeout calculation
Secure Digital cards use a different algorithm to calculate the timeout
for data transfers. Using the MMC one works often, but not always.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07 13:18:40 +01:00
Pierre Ossman dd2c609c59 [MMC] Another stray 'io' reference
Another misuse of the global 'io' variable instead of the local 'base'.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-07 14:47:54 +01:00
Pierre Ossman 916f3ac680 [MMC] Fix base address configuration in wbsd
There were some confusion about base I/O variables in the wbsd driver.
Seems like things have been working on shear luck so far. The global 'io'
variable (used when manually configuring the resources) was used instead of
the local 'base' variable.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-06 21:44:48 +01:00
Juha [l c723e08af1 [ARM] 3744/1: MMC: mmcqd gets stuck when block queue is plugged
Patch from Juha [l

When the block queue is plugged, mq->req must be set to NULL.
Otherwise mq->req might be left non-NULL, even though mmcqd is
not processing a request, thus preventing the MMC queue thread from
being woken up when new requests do arrive.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-06 09:58:22 +01:00
Pierre Ossman 8b1b21853b [MMC] Change SDHCI version error to a warning
O2 Micro's controllers have a larger specification version value and are
therefore denied by the driver. When bypassing this check they seem to work
fine. This patch makes the code a bit more forgiving by changing the error
to a warning.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-13 16:17:46 +01:00
Pierre Ossman fb61e28951 [MMC] Fix incorrect register access
There was a writel() being used on a 16-bit register.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-13 16:17:45 +01:00
Ingo Molnar 0afffc723c [PATCH] lockdep: annotate on-stack completions, mmc
lockdep needs to have the waitqueue lock initialized for on-stack
waitqueues implicitly initialized by DECLARE_COMPLETION().

Annotate mmc_wait_for_req()'s on-stack completion accordingly.

Has no effect on non-lockdep kernels.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:27:10 -07:00
Linus Torvalds f82bc1762e Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc:
  [MMC] sdhci: remove duplicate error message
  [MMC] sdhci: force DMA on some controllers
  [MMC] sdhci: quirk for broken reset
  [MMC] sdhci: Add SDHCI controller ids
2006-07-02 16:35:07 -07:00
Linus Torvalds a8c4c20dfa Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (44 commits)
  [ARM] 3541/2: workaround for PXA27x erratum E7
  [ARM] nommu: provide a way for correct control register value selection
  [ARM] 3705/1: add supersection support to ioremap()
  [ARM] 3707/1: iwmmxt: use the generic thread notifier infrastructure
  [ARM] 3706/2: ep93xx: add cirrus logic edb9315a support
  [ARM] 3704/1: format IOP Kconfig with tabs, create more consistency
  [ARM] 3703/1: Add help description for ARCH_EP80219
  [ARM] 3678/1: MMC: Make OMAP MMC work
  [ARM] 3677/1: OMAP: Update H2 defconfig
  [ARM] 3676/1: ARM: OMAP: Fix dmtimers and timer32k to compile on OMAP1
  [ARM] Add section support to ioremap
  [ARM] Fix sa11x0 SDRAM selection
  [ARM] Set bit 4 on section mappings correctly depending on CPU
  [ARM] 3666/1: TRIZEPS4 [1/5] core
  ARM: OMAP: Multiplexing for 24xx GPMC wait pin monitoring
  ARM: OMAP: Fix SRAM to use MT_MEMORY instead of MT_DEVICE
  ARM: OMAP: Update dmtimers
  ARM: OMAP: Make clock variables static
  ARM: OMAP: Fix GPMC compilation when DEBUG is defined
  ARM: OMAP: Mux updates for external DMA and GPIO
  ...
2006-07-02 15:04:12 -07:00
Linus Torvalds 168d04b3b4 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc:
  [MMC] sdhci: version bump sdhci
  [MMC] sdhci: support controller specific quirks
  [MMC] sdhci: more DMA capabilities tests
  [MMC] sdhci: reset sdhci controller early
  [MMC] sdhci: check controller version
  [MMC] sdhci: check only relevant inhibit bits
  [MMC] sdhci: Test for invalid block size
  [MMC] sdhci: Avoid sdhci DMA boundaries
  [MMC] Fix sdhci PIO routines
  [MMC] sdhci: fix interrupt handling
  [MMC] sdhci: correct register order
  [MMC] sdhci: proper timeout handling
  [MMC] sdhci: fix sdhci reset timeout
  [MMC] sdhci: fix timeout loops in sdhci
  [MMC] sdhci: support for multiple voltages
  [MMC] sdhci: print device id
  [MMC] sdhci: check SDHCI base clock
2006-07-02 14:58:03 -07:00
Thomas Gleixner dace145374 [PATCH] irq-flags: misc drivers: Use the new IRQF_ constants
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:50 -07:00
Pierre Ossman 4cca56c504 [MMC] sdhci: remove duplicate error message
When there is remaining blocks untransferred, we get two error messages saying
almost the same thing.  Make sure at most one is shown.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 18:02:02 +01:00
Pierre Ossman 98608076a2 [MMC] sdhci: force DMA on some controllers
Some controllers incorrectly report that the cannot do DMA.  Forcefully enable
it for those that we know it works fine on.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 18:02:01 +01:00
Pierre Ossman 645289dca5 [MMC] sdhci: quirk for broken reset
Some controllers fail to complete a reset unless you touch the clock register
first.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 18:02:00 +01:00
Pierre Ossman 2c5f394025 [MMC] sdhci: version bump sdhci
New version number for sdhci driver.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:55:00 +01:00
Pierre Ossman df673b227c [MMC] sdhci: support controller specific quirks
As some specific controllers will have bugs, we need a way to map special
behaviour to certain hardware.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:54:59 +01:00
Pierre Ossman 6743527441 [MMC] sdhci: more DMA capabilities tests
Properly test for controller interface to see if it's DMA capable.  As many
controllers are misconfigured in this regard, also add debug parameters to
force DMA support either way.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:54:56 +01:00
Pierre Ossman d96649ed5a [MMC] sdhci: reset sdhci controller early
The specification states that the capabilities register might need a reset to
get correct values after boot up.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:54:54 +01:00
Pierre Ossman 4a9655051f [MMC] sdhci: check controller version
Check the interface version of the controller and bail out if it's an unknown
version.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:54:53 +01:00
Pierre Ossman fd2208d7c7 [MMC] sdhci: check only relevant inhibit bits
Conform to the sdhci specification as to which inhibit bits should be checked
at different times.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:54:50 +01:00
Pierre Ossman 1d676e0297 [MMC] sdhci: Test for invalid block size
The controller has an upper limit on the block size. Make sure we do not
cross it.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:52:10 +01:00
Pierre Ossman bab7696184 [MMC] sdhci: Avoid sdhci DMA boundaries
The sdhci controllers will issue an interrupt when a configurable number of
bytes have been transfered using DMA. The purpose is to handle multiple,
scattered memory pages.

Unfortunately, it requires that all transfers are completely aligned to
memory pages, which we cannot guarantee. So we just disable the function.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:51:35 +01:00
Pierre Ossman a406f5a3b6 [MMC] Fix sdhci PIO routines
The sdhci controllers operate with blocks, not bytes. The PIO routines must
therefore make sure that the minimum unit transfered is a complete block.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:50:59 +01:00
Pierre Ossman 3192a28f7d [MMC] sdhci: fix interrupt handling
The specification says that interrupts should be cleared before the source is
removed.  We should also not set unknown bits.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:05 +01:00
Pierre Ossman c7fa9963ee [MMC] sdhci: correct register order
The sdhci specification states that some registers must be written to in a
specific order.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:04 +01:00
Pierre Ossman 1c8cde92fa [MMC] sdhci: proper timeout handling
Use the give timeout clock and calculate a proper timeout instead of using the
maximum at all times.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:04 +01:00
Pierre Ossman e16514d8d8 [MMC] sdhci: fix sdhci reset timeout
The reset register is automatically cleared when the reset has completed.
Hence, we should busy wait and not have a fixed delay.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:03 +01:00
Pierre Ossman 7cb2c76fa2 [MMC] sdhci: fix timeout loops in sdhci
The current timeout loop assume that jiffies are updated.  This might not be
the case depending on locks and if the kernel is compiled without preemption.
Change the system to use a counter and fixed delays.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:02 +01:00
Pierre Ossman 146ad66eac [MMC] sdhci: support for multiple voltages
The sdhci controllers can support up to three voltage levels.  Detect which
and report back to the MMC layer.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:01 +01:00
Pierre Ossman 51f82bc07a [MMC] sdhci: print device id
As sdhci is a generic driver, it is helpful to see some more specific
identification of the actual hardware in dmesg.  PCI vendor, device and
revision is sufficient in most cases.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:02:01 +01:00
Pierre Ossman 8ef1a14379 [MMC] sdhci: check SDHCI base clock
A base clock value of 0 means that the driver must get the base clock through
some other means.  As we have no other way of getting it, we must abort.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-02 16:01:59 +01:00
Tony Lindgren ce9c1a8388 [ARM] 3678/1: MMC: Make OMAP MMC work
Patch from Tony Lindgren

This patch makes OMAP MMC work again:

- Fix compile errors
- Do not ioremap base as it is already statically mapped
- Clean-up platform device handling
- Fix compile warnings

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-01 19:56:44 +01:00
Jörn Engel 6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Linus Torvalds 602cada851 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
  [PATCH] devfs: Remove it from the feature_removal.txt file
  [PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
  [PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
  [PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
  [PATCH] devfs: Remove devfs_remove() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
  [PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
  [PATCH] devfs: Remove devfs support from the sound subsystem
  [PATCH] devfs: Remove devfs support from the ide subsystem.
  [PATCH] devfs: Remove devfs support from the serial subsystem
  [PATCH] devfs: Remove devfs from the init code
  [PATCH] devfs: Remove devfs from the partition code
  ...
2006-06-29 14:19:21 -07:00
Greg Kroah-Hartman e29419fffc [PATCH] 64bit resource: fix up printks for resources in misc drivers
This is needed if we wish to change the size of the resource structures.

Based on an original patch from Vivek Goyal <vgoyal@in.ibm.com>

Cc: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-27 09:23:59 -07:00
Tony Lindgren 7ff879dbcd ARM: OMAP: Fix DMA channel irq handling for omap24xx
- DMA CSR register is cleared by reading on omap1, but on
  omap2 it is cleard by writing to it.

- DMA TOUT interrupt does not exist on omap24xx, rename it

- Add SECURE and MISALIGNED errors by default for omap24xx

- Add defines for external DMA request lines

Signed-off-by: Tony Lindgren <tony@atomide.com>
2006-06-26 16:16:15 -07:00
Greg Kroah-Hartman ce7b0f46bb [PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
And remove the now unneeded number field.
Also fixes all drivers that set these fields.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:25:08 -07:00
Greg Kroah-Hartman ff23eca3e8 [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
Also fixes up all files that #include it.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:25:08 -07:00
Greg Kroah-Hartman 8ab5e4c15b [PATCH] devfs: Remove devfs_remove() function from the kernel tree
Removes the devfs_remove() function and all callers of it.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:25:07 -07:00
Greg Kroah-Hartman 95dc112a57 [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
Removes the devfs_mk_dir() function and all callers of it.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-26 12:25:06 -07:00
Andrew Victor b44fb7a09e [ARM] 3565/1: AT91RM9200 MMC update
Patch from Andrew Victor

This patch includes code cleanups and minor fixes to the AT91RM9200 MMC
driver.

1. Replace calls to DBG() with pr_debug().
2. 'host' can never be null, so don't bother checking for that case.
3. Remove SA_SAMPLE_RANDOM from request_irq().  [Patch from Matt
Mackall]
4. clk_get() doesn't return NULL on error - need to test returned value
with IS_ERR().
5. Free resources if clk_get() or request_irq() fails.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-19 13:06:05 +01:00
Russell King a3fd4a1b9c [MMC] Convert all hosts except mmci to use data->blksz
The MMC specification allows non-power of two block sizes.  As such,
we should not pass the log2 block size to host drivers, but instead
pass the byte size.

However, ARM MMCI can only work with log2 block size, so continue to
pass both the log2 block size and byte block size.  This means that
for the moment, the byte block size must remain a power of two, but
this is the first stage of removing this restriction for other hosts.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-19 13:05:08 +01:00
Andrew Morton e474c66b1c [MMC] sdhci truncated pointer fix
On 64-bit machines, we just lost the uppermost 32 bits.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-12 22:10:22 +01:00
Ralf Baechle 092d01e260 [MMC] Prevent au1xmmc.c breakage on non-Au1200 Alchemy
The driver is selectable on other than Au1200 Alchemy systems but won't
build nor work - there is no MMC hw.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-06-04 17:40:58 +01:00
Pierre Ossman 51c4032740 [MMC] Fix premature use of md->disk
md->disk was being used in a debug message before it was allocated.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-24 08:35:31 -07:00
Pavel Pisa 2c171bf134 [ARM] 3531/1: i.MX/MX1 SD/MMC ensure, that clock are stopped before new command and cleanups
Patch from Pavel Pisa

There has been problems that for some paths that clock are not stopped
during new command programming and initiation. Result is issuing
of incorrect command to the card. Some other problems are cleaned too.
Noisy report of known ERRATUM #4 has been suppressed.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-19 21:48:03 +01:00
Russell King 920e70c5c6 [MMC] Move set_ios debugging into mmc.c
Rather than having every driver duplicate the set_ios debugging,
provide a single version in mmc.c which can be expanded as we
add additional functionality.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-04 18:22:51 +01:00
Russell King fe10c6abea [MMC] Correct mmc_request_done comments
mmc_request_done should be called at the end of handling a request, not
between the data and initial command parts of the request.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-04 13:51:45 +01:00
Russell King d78e9079af [MMC] PXA: reduce the number of lines PXAMCI debug uses
There's no reason for the PXAMCI debug code to print so many lines - it
causes the kernel buffer to overflow when trying to debug this driver.
Remove some debug messages which are duplicated by core code, and
combine other messages, resulting in fewer characters written to the
kernel log.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-02 20:18:53 +01:00
Russell King 58741e8b36 [MMC] PXA and i.MX: don't avoid sending stop command on error
Always send a stop command at the end of a data transfer.  If we avoid
sending the stop command, some cards remain in data transfer mode, and
refuse to accept further read/write commands.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-02 20:02:39 +01:00
Russell King 37be4e7809 [MMC] extend data timeout for writes
The CSD contains a "read2write factor" which determines the multiplier to
be applied to the read timeout to obtain the write timeout.  We were
ignoring this parameter, resulting in the possibility for writes being
timed out too early.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-02 17:24:59 +01:00
Pavel Pisa 81d38428df [ARM] 3485/1: i.MX: MX1 SD/MMC fix of unintentional double start possibility
Patch from Pavel Pisa

The clock starting imxmci_start_clock() function contains hardware
issue workaround, which repeats start attempt, if SDHC does not react on
the first trial. But the second start attempt can be taken even, if the
first succeed and test code misses time limited clock running phase
due to delay caused by schedule to other task or some another device
interrupt. This change enables to detect such situation.
The performance is not issue, because usually at full clock rate
only about six loops in delay cycle are needed.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-30 15:35:54 +01:00
Russell King 3d63abe56b [MMC] pxamci: fix data timeout calculation
The MMC layer gives us two parts for the timeout calculation - a fixed
timeout in nanoseconds, and a card clock-speed dependent part.

The PXA MMC hardware allows for a timeout based on the fixed host clock
speed only.  This resulted in some cards being given a short timeout,
and therefore failing to work.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-24 11:27:02 +01:00
Pavel Pisa 56ca904053 [ARM] 3457/1: i.MX: SD/MMC support for i.MX/MX1
Patch from Pavel Pisa

This patch adds support of i.MX/MX1 SD/MMC controller.
It has been significantly redesigned from the original Sascha Hauer's
version to support scatter-gather DMA, to conform to latest Pierre Ossman's
and Russell King's MMC-SD Linux 2.6.x infrastructure.
The handling of all events has been moved to the softirq context
and is designed with no busy-looping in mind. Unfortunately
some controller bugs has to be overcome by limited looping
about 2-20 usec but these are observed only for initial card
recognition phase.

There are still some missing/missed IRQs problems under heavy load.
Help of somebody with access to the full SDHC design information
is probably necessary.

Regenerated against 2.6.16-git-060402 to solve clash with other patches.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-02 19:27:07 +01:00
Andrew Victor 65dbf34393 [ARM] 3456/1: AT91RM9200 support for 2.6 (MMC/SD driver)
Patch from Andrew Victor

This patch adds support for the MMC/SD card interface on the Atmel
AT91RM9200 processor.

Original driver was by Nick Randell, but a number of people have
subsequently worked on it. It's currently maintained by Malcolm Noyes.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-04-02 19:18:51 +01:00
Russell King c65631781e [MMC] Pass -DDEBUG on compiler command line if MMC_DEBUG selected
Rather than each driver test MMC_DEBUG itself, and define DEBUG,
pass it in via the makefile instead.

Fix drivers to use pr_debug() where appropriate, and avoid defining
a DEBUG() macro.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-29 09:30:20 +01:00
Carlos Aguiar 730c9b7e66 [MMC] Add OMAP MMC host driver
Adds OMAP MMC driver.

Signed-off-by: Juha Yrjl <juha.yrjola@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Carlos Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-29 09:21:00 +01:00
Rusty Russell 8d3b33f67f [PATCH] Remove MODULE_PARM
MODULE_PARM was actually breaking: recent gcc version optimize them out as
unused.  It's time to replace the last users, which are generally in the
most unloved drivers anyway.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25 08:22:52 -08:00
Pierre Ossman d129bceb1d [PATCH] mmc: Secure Digital Host Controller Interface driver
Driver for the Secure Digital Host Controller Interface specification.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-24 07:33:27 -08:00
David Vrabel 489447380a [PATCH] handle errors returned by platform_get_irq*()
platform_get_irq*() now returns on -ENXIO when the resource cannot be
found.  Ensure all users of platform_get_irq*() handle this error
appropriately.

Signed-off-by: David Vrabel <dvrabel@arcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-20 13:42:57 -08:00
Martin Michlmayr 732b828860 [MMC] au1xmmc: Fix a compilation warning ('status' is not used)
Fix a trivial compilation warning:

  CC      drivers/mmc/au1xmmc.o
drivers/mmc/au1xmmc.c: In function ‘au1xmmc_dma_callback’:
drivers/mmc/au1xmmc.c:743: warning: unused variable ‘status’

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-04 23:02:10 +00:00
Martin Michlmayr e142c24cf8 [MMC] au1xmmc: Fix linking error because mmc_rsp_type doesn't exist
drivers/mmc/au1xmmc.c doesn't compile because commit
e92251762d introduced a typo and passes
the wrong argument to the mmc_resp_type macro.

Error because of the typo:

  CC      drivers/mmc/au1xmmc.o
drivers/mmc/au1xmmc.c: In function ‘au1xmmc_send_command’:
drivers/mmc/au1xmmc.c:197: warning: implicit declaration of function ‘mmc_rsp_type’
...
  LD      .tmp_vmlinux1
drivers/built-in.o: In function `au1xmmc_request':au1xmmc.c:(.text+0x89504): undefined reference to `mmc_rsp_type'
:au1xmmc.c:(.text+0x8968c): undefined reference to `mmc_rsp_type'
make: *** [.tmp_vmlinux1] Error 1

Error because of the wrong argument:

  CC      drivers/mmc/au1xmmc.o
drivers/mmc/au1xmmc.c: In function ‘au1xmmc_send_command’:
drivers/mmc/au1xmmc.c:197: error: invalid type argument of ‘->’

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-04 23:01:39 +00:00
Martin Michlmayr b256f9df4a [MMC] au1xmmc: Fix compilation error by using platform_driver
drivers/mmc/au1xmmc.c currently doesn't compile; it needs to be
converted to use platform_driver.  I cannot test this change because
of lack of hardware but I followed the drivers this one is based on,
and the code is certainly not worse than before.

drivers/mmc/au1xmmc.c: At top level:
drivers/mmc/au1xmmc.c:1002: error: ‘platform_bus_type’ undeclared here (not in a function)
make[2]: *** [drivers/mmc/au1xmmc.o] Error 1

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Acked-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-04 23:01:13 +00:00
Russell King 0425a14213 [MMC] mmci: allow small data transfers
If a data transfer is small (less than a FIFO size) we would
hang waiting for the data to be read due to the PIO interrupt
not occuring.  We allowed for this in our PIO interrupt handler,
but not when setting up a data transfer.

Apply the "fix" when setting up a data transfer as well.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-16 16:48:31 +00:00
Jordan Crouse be92cbb996 [MMC] Remove extra character in AU1XXX MMC Kconfig entry
An obvious vi fat finger on my part.

Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-08 22:23:05 +00:00
Russell King e92251762d [MMC] Add MMC command type flags
Some hosts need to know the command type, so pass it via a set of
flags in cmd->flags.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-02-02 12:23:12 +00:00
Linus Torvalds 150a631fc5 Merge master.kernel.org:/home/rmk/linux-2.6-mmc 2006-01-14 19:44:01 -08:00
Andrew Morton 51828abc17 [MMC] mmc_blk_probe() warning fix
drivers/mmc/mmc_block.c: In function `mmc_blk_probe':
drivers/mmc/mmc_block.c:467: warning: long unsigned int format, different type arg (arg 5)

We don't know what size sector_t is - cast it.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-13 21:44:18 +00:00
Russell King 4d0b653cdf [PATCH] Add mmc_bus_type probe and remove methods
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-13 11:26:08 -08:00
Arjan van de Ven a621aaed69 [MMC+MFD] Convert mmc to mutexes
convert mfd and mmc to mutexes

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-12 18:43:35 +00:00
Linus Torvalds 8e9c238c38 Merge master.kernel.org:/home/rmk/linux-2.6-mmc 2006-01-09 15:08:33 -08:00
Russell King 788ee7b098 [MMC] Add DATA_MULTI flag
Some hosts need to know that a transfer will be multi-block.
Add a data flag to indicate multiple data block transfers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-09 21:12:17 +00:00
Christoph Hellwig a885c8c431 [PATCH] Add block_device_operations.getgeo block device method
HDIO_GETGEO is implemented in most block drivers, and all of them have to
duplicate the code to copy the structure to userspace, as well as getting
the start sector.  This patch moves that to common code [1] and adds a
->getgeo method to fill out the raw kernel hd_geometry structure.  For many
drivers this means ->ioctl can go away now.

[1] the s390 block drivers are odd in this respect.  xpram sets ->start
    to 4 always which seems more than odd, and the dasd driver shifts
    the start offset around, probably because of it's non-standard
    sector size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@suse.de>
Cc: <mike.miller@hp.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:13:54 -08:00
Pierre Ossman cfa7f52164 [MMC] Lindent wbsd driver
Fix the coding style in the wbsd driver once and for all.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-08 18:17:55 +00:00
Pierre Ossman cb757b4eef [MMC] Support MMC version 4 cards
Version 4 of the MMC specification increased the version number of the
CID structure. None of the fields changed though so the only required
change is adding '4' to the approved list.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-08 14:23:02 +00:00
Pierre Ossman 5e68d95d15 [MMC] wbsd pnp suspend
Allow the wbsd driver to use the new suspend/resume functions added to
the PnP layer.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-08 14:21:52 +00:00
Linus Torvalds 8995b161eb Merge master.kernel.org:/home/rmk/linux-2.6-arm 2006-01-07 10:45:22 -08:00
Linus Torvalds f9c5d0451b Merge master.kernel.org:/home/rmk/linux-2.6-mmc 2006-01-07 10:43:40 -08:00
Russell King f8ce25476d [ARM] Move asm/hardware/clock.h to linux/clk.h
This is needs to be visible to other architectures using the AMBA
bus and peripherals.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-07 16:15:52 +00:00
Russell King 123656d4cc Merge with Linus' kernel. 2006-01-07 14:40:05 +00:00
Russell King a62c80e559 [ARM] Move AMBA include files to include/linux/amba/
Since the ARM AMBA bus is used on MIPS as well as ARM, we need
to make the bus available for other architectures to use.  Move
the AMBA include files from include/asm-arm/hardware/ to
include/linux/amba/

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-07 13:52:45 +00:00
Tejun Heo 8ffdc6550c [BLOCK] add @uptodate to end_that_request_last() and @error to rq_end_io_fn()
add @uptodate argument to end_that_request_last() and @error
to rq_end_io_fn().  there's no generic way to pass error code
to request completion function, making generic error handling
of non-fs request difficult (rq->errors is driver-specific and
each driver uses it differently).  this patch adds @uptodate
to end_that_request_last() and @error to rq_end_io_fn().

for fs requests, this doesn't really matter, so just using the
same uptodate argument used in the last call to
end_that_request_first() should suffice.  imho, this can also
help the generic command-carrying request jens is working on.

Signed-off-by: tejun heo <htejun@gmail.com>
Signed-Off-By: Jens Axboe <axboe@suse.de>
2006-01-06 09:49:03 +01:00
Evgeniy Polyakov f3e2628bed [MMC] mmci: kunmap_atomic() unmaps virtual address, not page
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-05 10:31:23 +00:00
Kay Sievers 312c004d36 [PATCH] driver core: replace "hotplug" by "uevent"
Leave the overloaded "hotplug" word to susbsystems which are handling
real devices. The driver core does not "plug" anything, it just exports
the state to userspace and generates events.

Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-04 16:18:08 -08:00
Russell King e9c091b474 [MMC] mmci: add data cache coherency
Since MMCI currently uses PIO to read data, we have to take steps
to ensure data cache coherency on aliasing CPU caches.  Add the
necessary flush_dcache_page() calls.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-04 16:24:05 +00:00
Dmitry Torokhov 21500bb32a [MMC] wbsd: convert to the new platfrom device interface
platform_device_register_simple() is going away, switch to
using platfrom_device_alloc() + platform_device_add(). Also
make sure that wbsd_driver gets unregistered when wbsd_init
fails.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
2006-01-03 22:57:35 +00:00
Dmitry Torokhov 63648fb5c0 [MMC] wbsd: make use of ARRAY_SIZE() macro
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
2006-01-03 22:56:56 +00:00
Russell King a6f6c96b65 [MMC] Improve MMC card block size selection
Select a block size for IO based on the read and write block size
combinations, and whether the card supports partial block reads
and/or partial block writes.

If we are able to satisfy block reads but not block writes, mark
the device read only.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-03 22:38:44 +00:00
Russell King a8d3584a2d [ARM] Remove clk_use()/clk_unuse()
It seems that clk_use() and clk_unuse() are additional complexity
which isn't required anymore.  Remove them from the clock framework
to avoid the additional confusion which they cause, and update all
ARM machine types except for OMAP.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-03 18:41:37 +00:00
Russell King d2b1839425 [MMC] Set correct capacity for 1024-byte block cards
We were passing set_capacity() the capacity we calculated in terms of
the number of blocks on the card, which happened to be the right units
for 512-byte block cards.  However, with 1024-byte block cards, we
end up setting the capacity to half the number of blocks.  Fix this
by shifting by the appropriate amount.

Thanks to Todd Blumer for pointing this out.

Use get_capacity() to report the card capacity, rather than
recalculating it from the CSD information.

Finally, use our chosen IO block size for the SET_BLOCKLEN command
rather than the CSD read block size.  Currently these are equivalent,
but will not be in the future.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-12-22 23:21:38 +00:00
Russell King 45f8245b97 [MMC] Explain the internals of mmc_power_up()
It seems that people get confused about what is happening in
mmc_power_up().  Add a comment to make it clear why we have
a two stage process.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-12-14 14:57:35 +00:00
Pierre Ossman e781de4415 [MMC] Proper check of SCR error code
The routine reading the SCR wasn't paying proper attention to the
error codes returned from the driver.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-12-05 10:00:50 +00:00
Pierre Ossman 24117defab [MMC] Fix protocol errors
A review against MMC/SD specifications found some errors in the current
implementation.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-28 21:00:29 +00:00
Russell King 69177e890c [MMC] mmci doesn't need asm/irq.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-12 17:26:21 +00:00
Linus Torvalds 5643f000c1 Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel 2005-11-11 09:24:26 -08:00
Pierre Ossman 402771c786 [MMC] wbsd version 1.5
New kernel, new patches, new version.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-09 23:22:27 +00:00
Pierre Ossman de1d09e3e2 [MMC] Add MODULE_AUTHOR to wbsd
'cause I'm in it for the chicks. ;)

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-09 23:21:49 +00:00
Pierre Ossman 93968d7551 [MMC] Use __devexit_p in wbsd
wbsd_*_remove() is declared as __devexit but __devexit_p isn't used
when taking their addresses.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-09 23:21:06 +00:00
Russell King 3ae5eaec1d [DRIVER MODEL] Convert platform drivers to use struct platform_driver
This allows us to eliminate the casts in the drivers, and eventually
remove the use of the device_driver function pointer methods for
platform device drivers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-09 22:32:44 +00:00
Linus Torvalds 254ce8dc88 Merge master.kernel.org:/home/rmk/linux-2.6-mmc 2005-11-07 13:32:52 -08:00
Uli Luckas 896937ad5c [ARM] 3120/1: Fix MMC/SD card driver resume deadlock
Patch from Uli Luckas

This is a simplification of patch 3116/1 as sugested by Russell King.

Signed-off-by: Uli Luckas <u.luckas@road-gmbh.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-07 21:22:07 +00:00
Jesper Juhl 6044ec8882 [PATCH] kfree cleanup: misc remaining drivers
This is the remaining misc drivers/ part of the big kfree cleanup patch.

Remove pointless checks for NULL prior to calling kfree() in misc files in
drivers/.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org>
Acked-by: Roland Dreier <rolandd@cisco.com>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Acked-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Len Brown <len.brown@intel.com>
Acked-by: "Antonino A. Daplas" <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07 07:54:05 -08:00
Pierre Ossman d191634f7a [MMC] Use controller id instead of driver name for printks
The printks that aren't for debugging should use the name of the controller,
not the driver name. Multiple MMC controllers aren't that common today, but
this is the right way to do things.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-05 10:36:35 +00:00
Pierre Ossman 25cc5e5bd2 [MMC] Fix chip config in wbsd
There is a broken if clause in the wbsd driver that can cause the
driver to try and configure the chip even though none is found. This
results in i/o on invalid ports.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-05 10:16:50 +00:00
Russell King 34cf9e3750 [MMC] Response to write commands is R1 nor R1b
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-11-04 18:43:39 +00:00
Linus Torvalds 4fd5f8267d Merge master.kernel.org:/home/rmk/linux-2.6-drvmodel
Manual #include fixups for clashes - there may be some unnecessary
2005-10-31 07:32:56 -08:00
Pierre Ossman 936d859265 [MMC] Use command class to determine read-only status
If a card doesn't support the "write block" command class then
any attempts to open the device should reflect this by denying
write access.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-30 10:15:58 +00:00
Russell King 9e1d98c5d8 [MMC] pxamci doesn't need to include asm/irq.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-30 10:10:13 +00:00
Pete Popov ba264b3403 Au1[12]00 mmc driver. Only tested on the Au1200 at this point though
it should work on the Au1100 as well. Updated defconfig to include driver.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2005-10-29 19:32:26 +01:00
Russell King d052d1beff Create platform_device.h to contain all the platform device details.
Convert everyone who uses platform_bus_type to include
linux/platform_device.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-29 19:07:23 +01:00
Pierre Ossman 19c1f3ca42 [MMC] wbsd suspend support
Proper handling of suspend/resume in the wbsd driver.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 21:37:29 +01:00
Greg KH 6fbfddcb52 Merge ../bleed-2.6 2005-10-28 10:13:16 -07:00
Russell King 9480e307cd [PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacks
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>
2005-10-28 09:52:56 -07:00
Russell King c6b8fdad14 [ARM] 3/4: Remove asm/hardware.h from Versatile and Integrator io.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 14:05:16 +01:00
Pierre Ossman 210ce2a750 [MMC] Clean up wbsd detection handling
The wbsd driver's card detection routing is a bit of a mess. This
patch cleans up the routine and makes it a bit more comprihensible.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-12 20:36:19 +01:00
Pierre Ossman e062c8ae85 [MMC] Remove unused timer.
Remove timer that was left from earlier cleanup.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-12 20:35:54 +01:00
Pierre Ossman fecf92ba05 [MMC] Remove trailing whitespace in wbsd
Clean out trailing whitespace caused by not-so-great editor since it
generates a lot of problems with editors configured to automatically
strip whitespace.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-12 12:09:25 +01:00
Russell King c4a72cbdb3 [MMC] Add mmc_detect_change() delay support for wbsd driver
Convert wbsd to use the new delay functionality in mmc_detect_change()
rather than implementing its own timer.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-10 11:58:21 +01:00
Richard Purdie c26971cbb3 [MMC] Add mmc_detect_change() delay support for PXAMCI driver
Allow PXA platforms to pass an appropriate delay value to the
PXA MCI driver for delaying detection changes.

Signed-Off-By: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-08 22:48:16 +01:00
Richard Purdie 8dc003359c [MMC] Allow detection/removal to be delayed
Change mmc_detect_change() to take a delay argument such that
the detection of card insertions and removals can be delayed
according to the requirements of the host driver or platform.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-08 17:53:01 +01:00
Pierre Ossman 4bc20a8d49 [PATCH] mmc: conditional scr sysfs entry
Only show the scr file in sysfs for SD cards.  Previously this was present
for all cards but had a contents of 0 for MMC cards.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:52 -07:00
Pierre Ossman 65ae2118e8 [PATCH] mmc: wbsd Secure Digital support
Add support for Secure Digital specific features in the wbsd driver.  Adds
support for read-only switch and wide bus transfers.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:51 -07:00
Richard Purdie e619524fe5 [PATCH] Add write protection switch handling to the PXA MMC driver
Add a write protection switch handling code to the PXA MMC driver so
that platform specific code can provide it if available.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:51 -07:00
Pierre Ossman 5b4fd9aef7 [PATCH] sd: SD copyright notice
Credit where credit is due.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:51 -07:00
Pierre Ossman f218278a45 [PATCH] sd: SD 4-bit bus
Infrastructure for 4-bit bus transfers with SD cards.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:51 -07:00
Pierre Ossman a9c4342beb [PATCH] sd: SCR in sysfs
Export the SCR register through sysfs.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:51 -07:00
Pierre Ossman b57c43ad81 [PATCH] sd: SCR register
Read the SD specific SCR register from the card.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:50 -07:00
Pierre Ossman a00fc09029 [PATCH] sd: read-only switch
Support for the read-only switch on SD cards which must be enforced by the
host.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:50 -07:00
Pierre Ossman 335eadf2ef [PATCH] sd: initialize SD cards
Support for the Secure Digital protocol in the MMC layer.

A summary of the legal issues surrounding SD cards, as understood by yours
truly:

Members of the Secure Digital Association, hereafter SDA, are required to sign
a NDA[1] before given access to any specifications.  It has been speculated
that including an SD implementation would forbid these members to redistribute
Linux.  This is the basic problem with SD support so it is unclear if it even
is a problem since it has no effect on those of us that aren't members.

The SDA doesn't seem to enforce these rules though since the patches included
here are based on documentation made public by some of the members.  The most
complete specs[2] are actually released by Sandisk, one of the founding
companies of the SDA.

Because of this the NDA is considered a non-issue by most involved in the
discussions concerning these patches.  It might be that the SDA is only
interested in protecting the so called "secure" bits of SD, which so far
hasn't been found in any public spec.  (The card is split into two sections,
one "normal" and one "secure" which has an access scheme similar to TPM:s).

(As a side note, Microsoft is working to make things easier for us since they
want to be able to include the source code for a SD driver in one of their
development kits.  HP is making sure that the new NDA will allow a Linux
implementation.  So far only the SDIO specs have been opened up[3].  More will
hopefully follow.)

 [1] http://www.sdcard.org/membership/images/ippolicy.pdf
 [2] http://www.sandisk.com/pdf/oem/ProdManualSDCardv1.9.pdf
 [3] http://www.sdcard.org/sdio/Simplified%20SDIO%20Card%20Specification.pdf

This patch contains the central parts of the SD support.  If no MMC cards are
found on a bus then the MMC layer proceeds looking for SD cards.  Helper
functions are extended to handle the special needs of SD cards.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:50 -07:00
Pierre Ossman 1656fa579e [MMC] support for mmc chip select in wbsd
Use the chip select ios in the wbsd driver.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-03 16:45:49 +01:00
Pierre Ossman 865e9f13c9 [MMC] ios for mmc chip select
Adds a new ios for setting the chip select pin on MMC cards. Needed on
SD controllers which use this pin for other things and therefore cannot
have it pulled high at all times.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-03 16:45:02 +01:00
Russell King dce7737718 [MMC] Use an IDR for host name indicies
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-19 09:42:52 +01:00
Russell King 1ad434d7cf [MMC] Use class device name for mmc host name
There's no point in having the host name duplicated between
the mmc_host structure and the encapsulated class device
structure.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-19 09:42:21 +01:00
Russell King 00b137cfda [MMC] Add MMC class devices
Create a mmc_host class to allow enumeration of MMC host controllers
even though they have no card(s) inserted.

Patch based on work by Pierre Ossman.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-19 09:41:24 +01:00
Russell King d366b64363 [MMC] Add mmc_hostname() macro
mmc_hostname() returns a pointer to the hostname for the mmc_host.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-08-19 09:40:08 +01:00
Pierre Ossman 3462b92541 [PATCH] wbsd version bump
Even though the changes are minor for the next release an increasing
version number simplifies my support issues.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-10 11:08:56 -07:00
Jesper Juhl 77933d7276 [PATCH] clean up inline static vs static inline
`gcc -W' likes to complain if the static keyword is not at the beginning of
the declaration.  This patch fixes all remaining occurrences of "inline
static" up with "static inline" in the entire kernel tree (140 occurrences in
47 files).

While making this change I came across a few lines with trailing whitespace
that I also fixed up, I have also added or removed a blank line or two here
and there, but there are no functional changes in the patch.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-27 16:26:20 -07:00