1
Commit Graph

171 Commits

Author SHA1 Message Date
Ben Dooks
50a845700b MMC: S3C24XX: Add media presence test to request handling.
Ensure that we have physical media present before attempting to
send a request to a card. This ensures that we do not get flooded
by errors from commands that can never be completed timing out.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:48 +02:00
Ben Dooks
2de5f79d4d MMC: S3C24XX: Fix use of msecs where jiffies are needed
mmc_detect_change() takes jiffies, not msecs. Convert the
previous value of msecs into jiffies before calling.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:48 +02:00
Ben Dooks
318f905f02 MMC: S3C24XX: Add MODULE_ALIAS() entries for the platform devices
Add MODULE_ALIAS() declerations for all the supported platform
devices for this driver.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Ben Dooks
3886ff5f63 MMC: S3C24XX: Fix s3c2410_dma_request() return code check.
The driver should be checking for a negative error code from
s3c2410_dma_request(), not non-zero. Newer kernels now return
the DMA channel number that was allocated by the request.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Ben Dooks
55d70f5a7b MMC: S3C24XX: Allow card-detect on non-IRQ capable pin
Add support to the S3C24XX MMC driver to have the card detect be on
a pin that is not IRQ capable.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Ben Dooks
7c14450ed6 MMC: S3C24XX: Ensure host->mrq->data is valid
Fix a crash if host->mrq->data is NULL on ending a transfer.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Ben Dooks
cf0984c8ed MMC: S3C24XX: Add support to invert write protect line
Support for inverting the sense of the MMC driver's write
protect detection line.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Ben Dooks
edb5a98e43 MMC: S3C24XX: Add platform data for MMC/SD driver
This patch adds platform data support to the s3mci driver.  This allows
flexible board-specific configuration of set_power, card detect and read only
pins.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Roman Moracik
d643b5f7e0 MMC: Fix S3C24XX IRQ enable during PIO transfers
Fix Bug #677 - I/O errors on heavy microSD writes for 2.6.22.x.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:47 +02:00
Thomas Kleffel
bdbc9c3a8f Fix the request finalisation by ensuring the controller
is stopped.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Harald Welte <laforge@openmoko.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:46 +02:00
Harald Welte
ceb3ac2525 MMC: DMA free fix for S3C24XX SD/MMC driver
Bugfix to ensure DMA channel allocated is freed on exit.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:46 +02:00
Harald Welte
679f0f8abd MMC: S3C24XX MMC/SD driver write fixes
This patch is a workaround of some S3C2410 MMC chip bug

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:46 +02:00
Thomas Kleffel
be518018c6 MMC: S3C24XX MMC/SD driver.
This is the latest S3C MMC/SD driver by Thomas Kleffel
with cleanups as suggested by AKPM done by Ben Dooks.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Thomas Kleffel <tk@maintech.de>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:46 +02:00
Pierre Ossman
8f1934ce78 sdhci: graceful handling of bad addresses
Be a bit more robust and fall back to PIO if someone is feeding us
bogus addresses.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:45 +02:00
Pierre Ossman
2134a922c6 sdhci: scatter-gather (ADMA) support
Add support for the scatter-gather DMA mode present on newer controllers.
As the mode requires 32-bit alignment, non-aligned chunks are handled by
using a bounce buffer.

Also add some new quirks to handle controllers that have bugs in the
ADMA engine.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:44 +02:00
Pierre Ossman
93fc48c785 sdhci-pci: don't penalize newer jmicron chips
The upcoming JMicron chips will have solved all the currently known
bugs, so don't penalize them for older problems.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:44 +02:00
Manuel Lauss
e2d2647702 au1xmmc: remove custom carddetect poll implementation.
The MMC core provides a carddetect poll feature, time to
remove the driver's own implementation of it.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:44 +02:00
Manuel Lauss
88b8d9a834 au1xmmc: abort requests early if no card is present.
Don't process an MMC request if no card is present.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:43 +02:00
Manuel Lauss
5c0a889df5 au1xmmc: codingstyle tidying.
Clean up the codebase, no functional changes.
- merge the au1xmmc.h header contents into the driver file,
- indentation, spelling and style fixes.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:43 +02:00
Manuel Lauss
20f522ff55 au1xmmc: SDIO IRQ support.
Wire up the SD controllers' SDIO IRQ capability.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:43 +02:00
Manuel Lauss
281dd23ea0 au1xmmc: enable 4 bit transfer mode
Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:43 +02:00
Manuel Lauss
c4223c2c91 au1xmmc: remove db1200 board code, rewrite probe.
Remove the DB1200 board-specific functions (card present, read-only,
activity LED methods) and instead add platform data which is passed
to the driver.  This also allows for platforms to implement other
carddetect schemes (e.g. dedicated irq) without having to pollute the
driver code.  The poll timer (used for pb1200) is kept for compatibility.

With the board-specific stuff gone, the driver's ->probe() code can be
cleaned up considerably.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:43 +02:00
Ville Syrjala
12bd257532 at91_mci: Fix byte mode transitions.
The byte mode support fails to clear the byte mode bit in the command
register, possibly leaving byte mode enabled with the counters programmed
in non-byte mode.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:43 +02:00
Ville Syrjala
9da3cbaf28 at91_mci: Cover more AT91RM9200 and AT91SAM9261 errata.
According to the documentation the AT91SAM9261 MCI shares the block size
limitations of the AT91RM9200 MCI. Also the errata documentation for
AT91RM9200 and AT91SAM9261 state that stream commands are not supported.
This has not been tested on actual hardware.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Ville Syrjala
5385edc500 at91_mci: AT91SAM9260/9263 12 byte write erratum (v2)
AT91SAM926[0/3] PDC must write at least 12 bytes. The code compiles and runs
but the actual condition for this erratum did not trigger in my tests so it's
unclear if it actually works as intended.

Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Nicolas Ferre
fa1fe010c1 at91_mci: manage cmd error and data error independently
In at91_mci_completed_command() function, this patch distinguishes
command error and data error. It reports it in the corresponding
error field.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Nicolas Ferre
ba7deeed96 mmc: at91_mci: do not read irq status twice as it will forget some errors
Reading AT91_MCI_SR again at the end of transfer can corrupt the
error reporting. Some fields in the SR register are read-and-clear.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Eric Benard
7a6588ba20 mmc: at91_mci: add sdio irq management
Enable SDIO interrupt handling.

Signed-off-by: Eric Benard <ebenard@free.fr>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Nicolas Ferre
3eb99a7bff mmc: at91_mci: add multiwrite switch
at91_mci is capable of multiwrite. Enable it before it disappears.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Nicolas Ferre
4ac24a8722 mmc: at91_mci: update bytes_xfered value once xfer done
Modify bytes_xfered value after a write.

That will report, as accurately as possible, the amount of
sectors that are effectively written.

This update introduces the check of the busy signal given by
the card.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Marc Pignat
c5a89c6c08 mmc: at91_mci: avoid timeouts
The at91 mci controller internal state machine seems to often crash. This can
be fixed by resetting the controller after each command for at91rm9200 and by
setting the MCI_BLKR register on at91sam926*.

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:42 +02:00
Marc Pignat
e181dce8ac mmc: at91_mci: show timeouts
Detect command timeout (or mci controller hangs).

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:41 +02:00
Marc Pignat
80f9254668 mmc: at91_mci: support for block size not modulo 4
Implement transfer with size not modulo 4 for at91sam9*. Please note that the
at91rm9200 simply can't handle this.

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:41 +02:00
Anton Vorontsov
08f80bb519 mmc: change .get_ro() callback semantics
Now get_ro() callback must return 0/1 values for its logical states, and
negative errno values in case of error. If particular host instance doesn't
support RO/WP switch, it should return -ENOSYS.

This patch changes some hosts in two ways:

1. Now functions should be smart to not return negative values in
   "RO asserted" case (particularly gpio_ calls could return negative
   values for the outermost GPIOs).

   Also, board code usually passes get_ro() callbacks that directly return
   gpioreg & bit result, so at91_mci, imxmmc, pxamci and mmc_spi's get_ro()
   handlers need take special care when returning platform's values to the
   mmc core.

2. In case of host instance didn't implement get_ro() callback, it should
   really return -ENOSYS and let the mmc core decide what to do about it
   (mmc core thinks the same way as the hosts, so it isn't functional
   change).

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:41 +02:00
Anton Vorontsov
619ef4b421 mmc_spi: add support for card-detection polling
This patch adds new platform data variable "caps", so platforms
could pass theirs capabilities into MMC core (for example, platforms
without interrupt on the CD line will most probably want to pass
MMC_CAP_NEEDS_POLL).

New platform get_cd() callback provided to optimize polling.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:41 +02:00
Pierre Ossman
309d9736a9 sdhci-pci: unaligned data with ricoh controllers
The Ricoh controllers cannot handle unaligned data blocks.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:40 +02:00
Pierre Ossman
1e72859e3a sdhci: handle hot-remove
Gracefully handle when the device is suddenly removed. Do a test read
and avoid any further access if that read returns -1.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:40 +02:00
Pierre Ossman
4489428ab5 sdhci: support JMicron secondary interface
JMicron chips sometimes have two interfaces to work around limitations
in Microsoft's sdhci driver. This patch allows us to use either interface.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:40 +02:00
Pierre Ossman
45211e2159 sdhci: toggle JMicron PMOS setting
Some of the JMicron chips requires us to manually enable the power
output stages of the chip. Add the necessary hooks and functions to
manage this.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:40 +02:00
Pierre Ossman
ee53ab5d73 sdhci: make workaround for timeout bug more general
Give the quirk for broken timeout handling a better chance of handling
more controllers by simply classifying the system as broken and setting
a fixed value.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:39 +02:00
Pierre Ossman
2260640589 sdhci: more complex quirks handling
Extend the quirks handling in the PCI driver to be able to have
callbacks and not just flags.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:39 +02:00
Pierre Ossman
3815a0ebab sdhci: remove forced dma quirks
Remove the quirk to force DMA on the Ricoh and TI controllers as it is
no longer needed. The only bug they have is that they use an incorrect
PCI interface value, and that is not respected anymore.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:39 +02:00
Pierre Ossman
b8c86fc5d8 sdhci: move pci stuff to separate module
The SDHCI interface is not PCI specific, yet the Linux driver was
intimitely connected to the PCI bus. This patch properly separates
the PCI specific portion from the bus independent code.

This patch is based on work by Ben Dooks but he did not have time
to complete it.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:39 +02:00
Pierre Ossman
c9b74c5b8f sdhci: don't check block count for progress
The specification is insufficiently strict when it comes to how the
hardware should update the block count register, making it useless
for checking transfer progress.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:39 +02:00
Linus Torvalds
85082fd7cb 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: (241 commits)
  [ARM] 5171/1: ep93xx: fix compilation of modules using clocks
  [ARM] 5133/2: at91sam9g20 defconfig file
  [ARM] 5130/4: Support for the at91sam9g20
  [ARM] 5160/1: IOP3XX: gpio/gpiolib support
  [ARM] at91: Fix NAND FLASH timings for at91sam9x evaluation kits.
  [ARM] 5084/1: zylonite: Register AC97 device
  [ARM] 5085/2: PXA: Move AC97 over to the new central device declaration model
  [ARM] 5120/1: pxa: correct platform driver names for PXA25x and PXA27x UDC drivers
  [ARM] 5147/1: pxaficp_ir: drop pxa_gpio_mode calls, as pin setting
  [ARM] 5145/1: PXA2xx: provide api to control IrDA pins state
  [ARM] 5144/1: pxaficp_ir: cleanup includes
  [ARM] pxa: remove pxa_set_cken()
  [ARM] pxa: allow clk aliases
  [ARM] Feroceon: don't disable BPU on boot
  [ARM] Orion: LED support for HP mv2120
  [ARM] Orion: add RD88F5181L-FXO support
  [ARM] Orion: add RD88F5181L-GE support
  [ARM] Orion: add Netgear WNR854T support
  [ARM] s3c2410_defconfig: update for current build
  [ARM] Acer n30: Minor style and indentation fixes.
  ...
2008-07-14 16:06:58 -07:00
Russell King
f0006314d3 Merge branch 'imx' into devel
Conflicts:

	arch/arm/mm/Kconfig
2008-07-10 16:41:50 +01:00
Philipp Zabel
97f8571e66 pxamci: fix byte aligned DMA transfers
The pxa27x DMA controller defaults to 64-bit alignment. This caused
the SCR reads to fail (and, depending on card type, error out) when
card->raw_scr was not aligned on a 8-byte boundary.

For performance reasons all scatter-gather addresses passed to
pxamci_request should be aligned on 8-byte boundaries, but if
this can't be guaranteed, byte aligned DMA transfers in the
have to be enabled in the controller to get correct behaviour.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-06 10:37:40 -07:00
Sascha Hauer
38a41fdf94 IMX: introduce clock API
This patch introduces the clock API for i.MX and converts all
in-Kernel drivers to use it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2008-07-05 10:02:46 +02:00
Pierre Ossman
bf5b1935d8 mmc: don't use DMA on newer ENE controllers
Even the newer ENE controllers have bugs in their DMA engine that make
it too dangerous to use. Disable it until someone has figured out under
which conditions it corrupts data.

This has caused problems at least once, and can be found as bug report
10925 in the kernel bugzilla.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04 10:44:49 -07:00
Andres Salomon
603ded16a3 olpc: sdhci: add quirk for the Marvell CaFe's interrupt timeout
The CaFe chip has a hardware bug that ends up with us getting a timeout
value that's too small, causing the following sorts of problems:

[   60.525138] mmcblk0: error -110 transferring data
[   60.531477] end_request: I/O error, dev mmcblk0, sector 1484353
[   60.533371] Buffer I/O error on device mmcblk0p2, logical block 181632
[   60.533371] lost page write due to I/O error on mmcblk0p2

Presumably this is an off-by-one error in the hardware.  Incrementing
the timeout count value that we stuff into the TIMEOUT_CONTROL register
gets us a value that works.  This bug was originally discovered by
Pierre Ossman, I believe.

[thanks to Robert Millan for proving that this was still a problem]

Signed-off-by: Andres Salomon <dilinger@debian.org>
Cc: Pierre Ossman <drzeus-list@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-04 10:40:09 -07:00