2635d1ba71
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>
25 lines
474 B
C
25 lines
474 B
C
#ifndef __MACH_ATMEL_MCI_H
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#define __MACH_ATMEL_MCI_H
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#include <linux/dw_dmac.h>
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/**
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* struct mci_dma_data - DMA data for MCI interface
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*/
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struct mci_dma_data {
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struct dw_dma_slave sdata;
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};
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/* accessor macros */
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#define slave_data_ptr(s) (&(s)->sdata)
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#define find_slave_dev(s) ((s)->sdata.dma_dev)
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#define setup_dma_addr(s, t, r) do { \
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if (s) { \
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(s)->sdata.tx_reg = (t); \
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(s)->sdata.rx_reg = (r); \
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} \
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} while (0)
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#endif /* __MACH_ATMEL_MCI_H */
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