linux/arch/arm/mach-at91/include/mach/atmel-mci.h
Nicolas Ferre 2635d1ba71 atmel-mci: change use of dma slave interface
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>
2009-12-15 08:53:35 -08:00

25 lines
474 B
C

#ifndef __MACH_ATMEL_MCI_H
#define __MACH_ATMEL_MCI_H
#include <mach/at_hdmac.h>
/**
* struct mci_dma_data - DMA data for MCI interface
*/
struct mci_dma_data {
struct at_dma_slave sdata;
};
/* accessor macros */
#define slave_data_ptr(s) (&(s)->sdata)
#define find_slave_dev(s) ((s)->sdata.dma_dev)
#define setup_dma_addr(s, t, r) do { \
if (s) { \
(s)->sdata.tx_reg = (t); \
(s)->sdata.rx_reg = (r); \
} \
} while (0)
#endif /* __MACH_ATMEL_MCI_H */