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linux/include
Haavard Skinnemoen 7d2be0749a atmel-mci: Driver for Atmel on-chip MMC controllers
This is a driver for the MMC controller on the AP7000 chips from
Atmel. It should in theory work on AT91 systems too with some
tweaking, but since the DMA interface is quite different, it's not
entirely clear if it's worth merging this with the at91_mci driver.

This driver has been around for a while in BSPs and kernel sources
provided by Atmel, but this particular version uses the generic DMA
Engine framework (with the slave extensions) instead of an
avr32-only DMA controller framework.

This driver can also use PIO transfers when no DMA channels are
available, and for transfers where using DMA may be difficult or
impractical for some reason (e.g. the DMA setup overhead is usually
not worth it for very short transfers, and badly aligned buffers or
lengths are difficult to handle.)

Currently, the driver only support PIO transfers. DMA support has been
split out to a separate patch to hopefully make it easier to review.

The driver has been tested using mmc-block and ext3fs on several SD,
SDHC and MMC+ cards. Reads and writes work fine, with read transfer
rates up to 3.5 MiB/s on fast cards with debugging disabled.

The driver has also been tested using the mmc_test module on the same
cards. All tests except 7, 9, 15 and 17 succeed. The first two are
unsupported by all the cards I have, so I don't know if the driver
handles this correctly. The last two fail because the hardware flags a
Data CRC Error instead of a Data Timeout error. I'm not sure how to deal
with that.

Documentation for this controller can be found in many data sheets from
Atmel, including the AT32AP7000 data sheet which can be found here:

http://www.atmel.com/dyn/products/datasheets.asp?family_id=682

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2008-07-15 14:14:49 +02:00
..
acpi
asm-alpha alpha: fix compile error in arch/alpha/mm/init.c 2008-06-23 18:26:04 -07:00
asm-arm MMC: S3C24XX: Add media presence test to request handling. 2008-07-15 14:14:48 +02:00
asm-avr32 atmel-mci: Driver for Atmel on-chip MMC controllers 2008-07-15 14:14:49 +02:00
asm-blackfin Blackfin Serial Driver: Use timer to poll CTS PIN instead of workqueue. 2008-06-19 17:46:39 +08:00
asm-cris
asm-frv frv: fix irqs_disabled() to return an int, not an unsigned long 2008-07-12 14:33:42 -07:00
asm-generic Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6 2008-07-14 16:54:07 -07:00
asm-h8300
asm-ia64 [IA64] Fix CONFIG_IA64_SGI_UV build error 2008-06-16 09:02:03 -07:00
asm-m32r
asm-m68k
asm-m68knommu
asm-mips au1xmmc: remove db1200 board code, rewrite probe. 2008-07-15 14:14:43 +02:00
asm-mn10300
asm-parisc
asm-powerpc Merge branch 'tracing/ftrace' into auto-ftrace-next 2008-07-10 11:43:00 +02:00
asm-ppc
asm-s390 [S390] Remove P390 support. 2008-07-14 10:02:25 +02:00
asm-sh
asm-sparc
asm-sparc64 fix "ftrace: store mcount address in rec->ip" 2008-07-01 17:46:14 +02:00
asm-um
asm-v850
asm-x86 Merge branch 'auto-ftrace-next' into tracing/for-linus 2008-07-14 16:11:52 +02:00
asm-xtensa
crypto crypto: hash - Move ahash functions into crypto/hash.h 2008-07-10 20:35:18 +08:00
drm drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00
keys
linux mmc: fix sdio_io sparse errors 2008-07-15 14:14:48 +02:00
math-emu
media V4L/DVB (8092): videodev: simplify and fix standard enumeration 2008-06-26 15:58:57 -03:00
mtd
net net-sched: change tcf_destroy_chain() to clear start of filter list 2008-07-01 19:52:38 -07:00
pcmcia pcmcia: (re)move {pcmcia,pccard}_get_status 2008-06-24 15:33:44 +02:00
rdma
rxrpc
scsi
sound ALSA: Release v1.0.17 2008-07-14 09:54:43 +02:00
video
xen xen: implement ptep_modify_prot_start/commit 2008-06-25 15:17:23 +02:00
Kbuild drm: reorganise drm tree to be more future proof. 2008-07-14 10:45:01 +10:00