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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
..
arch-at32ap atmel-mci: Driver for Atmel on-chip MMC controllers 2008-07-15 14:14:49 +02:00
mach [PATCH] atmel_serial: Rename at91_register_uart_fns 2006-10-04 10:25:05 -07:00
a.out.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
addrspace.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
asm.h avr32: Use constants from sysreg.h in asm.h 2008-04-19 20:40:07 -04:00
atmel-mci.h atmel-mci: Driver for Atmel on-chip MMC controllers 2008-07-15 14:14:49 +02:00
atomic.h [AVR32] Fix atomic_add_unless() and atomic_sub_unless() 2007-07-18 20:47:04 +02:00
auxvec.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
bitops.h forbid asm/bitops.h direct inclusion 2007-10-19 11:53:41 -07:00
bug.h Fix WARN_ON() on bitfield ops for all other archs 2007-08-01 20:45:38 -07:00
bugs.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
byteorder.h avr32: Work around byteswap bug in gcc < 4.2 2008-03-10 13:32:33 +01:00
cache.h [AVR32] Define ARCH_KMALLOC_MINALIGN to L1_CACHE_BYTES 2007-06-14 18:30:50 +02:00
cachectl.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
cacheflush.h [AVR32] Fix copy_to_user_page() breakage 2007-12-07 14:54:47 +01:00
checksum.h Remove a couple final references to obsolete verify_area(). 2007-02-09 15:01:56 +01:00
cputime.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
current.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
delay.h Fix __const_udelay declaration and definition mismatches 2008-02-06 10:41:06 -08:00
device.h Driver core: add dev_archdata to struct device 2006-12-01 14:52:01 -08:00
div64.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
dma-mapping.h AVR32: Fix sg_page breakage 2007-10-24 10:16:02 +02:00
dma.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
elf.h Cleanup asm/{elf,page,user}.h: #ifdef __KERNEL__ is no longer needed 2008-02-07 08:42:30 -08:00
emergency-restart.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
errno.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
fb.h fbdev: detect primary display device 2007-07-17 10:23:11 -07:00
fcntl.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
futex.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
gpio.h [AVR32] GPIO API implementation 2007-02-09 15:01:58 +01:00
hardirq.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
hw_irq.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
io.h Remove dma_cache_(wback|inv|wback_inv) functions 2007-10-17 08:42:57 -07:00
ioctl.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
ioctls.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
ipcbuf.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
irq_regs.h [PATCH] IRQ: Fix AVR32 breakage 2006-10-11 11:14:14 -07:00
irq.h avr32: Delete mostly unused header asm/intc.h 2008-04-19 20:40:07 -04:00
irqflags.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
Kbuild [AVR32] Fix typo in include/asm-avr32/Kbuild 2007-03-07 10:50:27 +01:00
kdebug.h [AVR32] NMI debugging 2008-01-25 08:31:43 +01:00
kmap_types.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
kprobes.h kprobes: support kretprobe blacklist 2007-10-16 09:43:10 -07:00
kvm.h kvm: provide kvm.h for all architecture: fixes headers_install 2008-04-02 15:28:18 -07:00
linkage.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
local.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
mman.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
mmu_context.h avr32: Kill unneeded #include <asm/pgalloc.h> from asm/mmu_context.h 2008-06-27 17:48:05 +02:00
mmu.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
module.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
msgbuf.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
mutex.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
namei.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
numnodes.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
ocd.h [AVR32] Enable debugging only when needed 2008-01-25 08:31:39 +01:00
page.h avr32: cleanup - use _AC macro to define PAGE_SIZE 2008-04-19 20:40:06 -04:00
param.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
pci.h avr32: Provide PCI DMA mapping API 2008-06-27 15:07:01 +02:00
percpu.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
pgalloc.h avr32: Use a quicklist for PTE allocation as well 2008-07-02 11:01:29 +02:00
pgtable-2level.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
pgtable.h avr32: Store virtual addresses in the PGD 2008-07-02 11:01:28 +02:00
poll.h Consolidate asm/poll.h 2007-05-11 08:29:34 -07:00
posix_types.h asm-*/posix_types.h: scrub __GLIBC__ 2008-02-08 09:22:34 -08:00
processor.h aout: move STACK_TOP[_MAX] to asm/processor.h 2008-02-08 09:22:29 -08:00
ptrace.h [AVR32] Enable debugging only when needed 2008-01-25 08:31:39 +01:00
resource.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
scatterlist.h Add CONFIG_DEBUG_SG sg validation 2007-10-22 21:20:03 +02:00
sections.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
semaphore.h Generic semaphore implementation 2008-04-17 10:42:34 -04:00
sembuf.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
serial.h avr32: add include/asm-avr32/serial.h 2008-04-19 20:40:10 -04:00
setup.h Fix name of Russell King in various comments 2008-07-10 18:04:43 -07:00
shmbuf.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
shmparam.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
sigcontext.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
siginfo.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
signal.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
socket.h [NET]: Introducing socket mark socket option. 2008-01-31 19:27:19 -08:00
sockios.h [NET]: Introduce SIOCGSTAMPNS ioctl to get timestamps with nanosec resolution 2007-04-25 22:24:04 -07:00
stat.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
statfs.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
string.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
sysreg.h [AVR32] Implement irqflags trace and lockdep support 2007-12-07 14:52:37 +01:00
system.h Add cmpxchg_local to avr32 2008-02-07 08:42:31 -08:00
termbits.h lots-of-architectures: enable arbitary speed tty support 2007-07-10 17:51:13 -07:00
termios.h [PATCH] consolidate line discipline number definitions 2007-02-11 10:51:26 -08:00
thread_info.h avr32: Power Management support ("standby" and "mem" modes) 2008-07-02 11:05:01 +02:00
timex.h read_current_timer() cleanups 2008-02-06 10:41:02 -08:00
tlb.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
tlbflush.h avr32: Clean up and optimize the TLB operations 2008-07-02 11:01:28 +02:00
topology.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
traps.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
types.h avr32: types: use <asm-generic/int-*.h> for the avr32 architecture 2008-05-02 16:18:20 -07:00
uaccess.h [AVR32] Fix compile error with gcc 4.1 2007-04-27 14:21:47 +02:00
ucontext.h [PATCH] avr32 architecture 2006-09-26 08:48:54 -07:00
unaligned.h kernel: Move arches to use common unaligned access 2008-04-29 08:06:27 -07:00
unistd.h Fix timerfd breakage on avr32 2008-02-05 14:37:15 -08:00
user.h Sanitize the type of struct user.u_ar0 2008-02-07 08:42:30 -08:00
xor.h add include/asm-avr32/xor.h 2008-04-19 20:40:09 -04:00