ide: add at91_ide driver

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>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index e072903b12f0..5ea3bfad172a 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -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)