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atmel-mci: change use of dma slave interface

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Allow the use of another DMA controller driver in atmel-mci sd/mmc driver.
 This adds a generic dma_slave pointer to the mci platform structure where
we can store DMA controller information.  In atmel-mci we use information
provided by this structure to initialize the driver (with new helper
functions that are architecture dependant).

This also adds at32/avr32 chip modifications to cope with this new access
method.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Nicolas Ferre
2009-12-14 18:01:30 -08:00
committed by Linus Torvalds
parent bd68e0838f
commit 2635d1ba71
5 changed files with 98 additions and 28 deletions
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4
include/linux/atmel-mci.h
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@ -3,8 +3,6 @@
#define ATMEL_MCI_MAX_NR_SLOTS 2
#include <linux/dw_dmac.h>
/**
* struct mci_slot_pdata - board-specific per-slot configuration
* @bus_width: Number of data lines wired up the slot
@ -34,7 +32,7 @@ struct mci_slot_pdata {
* @slot: Per-slot configuration data.
*/
struct mci_platform_data {
struct dw_dma_slave dma_slave;
struct mci_dma_data *dma_slave;
struct mci_slot_pdata slot[ATMEL_MCI_MAX_NR_SLOTS];
};