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serial: sh-sci: Add DMA support.

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Support using DMA for sending and receiving data over SCI(F) interfaces of
various SH SoCs.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Guennadi Liakhovetski 2010-03-02 11:39:15 +09:00 • committed by Paul Mundt
parent c014906a87
commit 73a19e4c03
3 changed files with 582 additions and 46 deletions
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6
include/linux/serial_sci.h
View file

@ -2,6 +2,7 @@
#define __LINUX_SERIAL_SCI_H
#include <linux/serial_core.h>
#include <asm/dmaengine.h>
/*
* Generic header for SuperH SCI(F) (used by sh/sh64/h8300 and related parts)
@ -16,6 +17,8 @@ enum {
SCIx_NR_IRQS,
};
struct device;
/*
* Platform device specific platform_data struct
*/
@ -26,6 +29,9 @@ struct plat_sci_port {
unsigned int type; /* SCI / SCIF / IRDA */
upf_t flags; /* UPF_* flags */
char *clk; /* clock string */
struct device *dma_dev;
enum sh_dmae_slave_chan_id dma_slave_tx;
enum sh_dmae_slave_chan_id dma_slave_rx;
};
#endif /* __LINUX_SERIAL_SCI_H */