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ide: add at91_ide driver

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This is IDE host driver for AT91 (SAM9, CAP9, AT572D940HF) Static Memory
Controller with Compact Flash True IDE Mode logic.

Driver have to switch 8/16 bit bus width when accessing Task Tile or Data
Register. Moreover some extra things need to be done when setting PIO mode.
Only PIO mode is used, hardware have no DMA support. If interrupt line is
connected through GPIO extra quirk is needed to cope with fake interrupts.

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Andrew Victor <avictor.za@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Stanislaw Gruszka
2009-03-05 16:10:58 +01:00
committed by Bartlomiej Zolnierkiewicz
parent 849d713000
commit 6e5f1e1115
4 changed files with 476 additions and 0 deletions
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drivers/ide/Kconfig
+5
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@@ -721,6 +721,11 @@ config BLK_DEV_IDE_TX4939
depends on SOC_TX4939
select BLK_DEV_IDEDMA_SFF
config BLK_DEV_IDE_AT91
tristate "Atmel AT91 (SAM9, CAP9, AT572D940HF) IDE support"
depends on ARM && ARCH_AT91 && !ARCH_AT91RM9200 && !ARCH_AT91X40
select IDE_TIMINGS
config IDE_ARM
tristate "ARM IDE support"
depends on ARM && (ARCH_RPC || ARCH_SHARK)