[ARM] S3C: Make common <plat/dma.h> header
Move the common information from the <mach/dma.h> header into a new shareable <plat/dma.h> header for re-use on the s3c64xx. Signed-off-by: Ben Dooks <ben@simtec.co.uk> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Ben Dooks
Ben Dooks
parent
023b40cd10
commit
c133c29011
|
|
@ -13,6 +13,7 @@
|
|||
#ifndef __ASM_ARCH_DMA_H
|
||||
#define __ASM_ARCH_DMA_H __FILE__
|
||||
|
||||
#include <plat/dma.h>
|
||||
#include <linux/sysdev.h>
|
||||
#include <mach/hardware.h>
|
||||
|
||||
|
|
@ -103,32 +104,6 @@ enum s3c2410_dma_loadst {
|
|||
S3C2410_DMALOAD_1LOADED_1RUNNING,
|
||||
};
|
||||
|
||||
enum s3c2410_dma_buffresult {
|
||||
S3C2410_RES_OK,
|
||||
S3C2410_RES_ERR,
|
||||
S3C2410_RES_ABORT
|
||||
};
|
||||
|
||||
enum s3c2410_dmasrc {
|
||||
S3C2410_DMASRC_HW, /* source is memory */
|
||||
S3C2410_DMASRC_MEM /* source is hardware */
|
||||
};
|
||||
|
||||
/* enum s3c2410_chan_op
|
||||
*
|
||||
* operation codes passed to the DMA code by the user, and also used
|
||||
* to inform the current channel owner of any changes to the system state
|
||||
*/
|
||||
|
||||
enum s3c2410_chan_op {
|
||||
S3C2410_DMAOP_START,
|
||||
S3C2410_DMAOP_STOP,
|
||||
S3C2410_DMAOP_PAUSE,
|
||||
S3C2410_DMAOP_RESUME,
|
||||
S3C2410_DMAOP_FLUSH,
|
||||
S3C2410_DMAOP_TIMEOUT, /* internal signal to handler */
|
||||
S3C2410_DMAOP_STARTED, /* indicate channel started */
|
||||
};
|
||||
|
||||
/* flags */
|
||||
|
||||
|
|
@ -138,17 +113,14 @@ enum s3c2410_chan_op {
|
|||
|
||||
/* dma buffer */
|
||||
|
||||
struct s3c2410_dma_client {
|
||||
char *name;
|
||||
};
|
||||
struct s3c2410_dma_buf;
|
||||
|
||||
/* s3c2410_dma_buf_s
|
||||
/* s3c2410_dma_buf
|
||||
*
|
||||
* internally used buffer structure to describe a queued or running
|
||||
* buffer.
|
||||
*/
|
||||
|
||||
struct s3c2410_dma_buf;
|
||||
struct s3c2410_dma_buf {
|
||||
struct s3c2410_dma_buf *next;
|
||||
int magic; /* magic */
|
||||
|
|
@ -160,20 +132,6 @@ struct s3c2410_dma_buf {
|
|||
|
||||
/* [1] is this updated for both recv/send modes? */
|
||||
|
||||
struct s3c2410_dma_chan;
|
||||
|
||||
/* s3c2410_dma_cbfn_t
|
||||
*
|
||||
* buffer callback routine type
|
||||
*/
|
||||
|
||||
typedef void (*s3c2410_dma_cbfn_t)(struct s3c2410_dma_chan *,
|
||||
void *buf, int size,
|
||||
enum s3c2410_dma_buffresult result);
|
||||
|
||||
typedef int (*s3c2410_dma_opfn_t)(struct s3c2410_dma_chan *,
|
||||
enum s3c2410_chan_op );
|
||||
|
||||
struct s3c2410_dma_stats {
|
||||
unsigned long loads;
|
||||
unsigned long timeout_longest;
|
||||
|
|
@ -241,73 +199,4 @@ extern struct s3c2410_dma_chan s3c2410_chans[];
|
|||
/* note, we don't really use dma_device_t at the moment */
|
||||
typedef unsigned long dma_device_t;
|
||||
|
||||
/* functions --------------------------------------------------------------- */
|
||||
|
||||
/* s3c2410_dma_request
|
||||
*
|
||||
* request a dma channel exclusivley
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_request(unsigned int channel,
|
||||
struct s3c2410_dma_client *, void *dev);
|
||||
|
||||
|
||||
/* s3c2410_dma_ctrl
|
||||
*
|
||||
* change the state of the dma channel
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op);
|
||||
|
||||
/* s3c2410_dma_setflags
|
||||
*
|
||||
* set the channel's flags to a given state
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_setflags(unsigned int channel,
|
||||
unsigned int flags);
|
||||
|
||||
/* s3c2410_dma_free
|
||||
*
|
||||
* free the dma channel (will also abort any outstanding operations)
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *);
|
||||
|
||||
/* s3c2410_dma_enqueue
|
||||
*
|
||||
* place the given buffer onto the queue of operations for the channel.
|
||||
* The buffer must be allocated from dma coherent memory, or the Dcache/WB
|
||||
* drained before the buffer is given to the DMA system.
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_enqueue(unsigned int channel, void *id,
|
||||
dma_addr_t data, int size);
|
||||
|
||||
/* s3c2410_dma_config
|
||||
*
|
||||
* configure the dma channel
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_config(unsigned int channel, int xferunit);
|
||||
|
||||
/* s3c2410_dma_devconfig
|
||||
*
|
||||
* configure the device we're talking to
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
|
||||
unsigned long devaddr);
|
||||
|
||||
/* s3c2410_dma_getposition
|
||||
*
|
||||
* get the position that the dma transfer is currently at
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_getposition(unsigned int channel,
|
||||
dma_addr_t *src, dma_addr_t *dest);
|
||||
|
||||
extern int s3c2410_dma_set_opfn(unsigned int, s3c2410_dma_opfn_t rtn);
|
||||
extern int s3c2410_dma_set_buffdone_fn(unsigned int, s3c2410_dma_cbfn_t rtn);
|
||||
|
||||
#endif /* __ASM_ARCH_DMA_H */
|
||||
|
|
|
|||
|
|
@ -0,0 +1,127 @@
|
|||
/* arch/arm/plat-s3c/include/plat/dma.h
|
||||
*
|
||||
* Copyright (C) 2003,2004,2006 Simtec Electronics
|
||||
* Ben Dooks <ben@simtec.co.uk>
|
||||
*
|
||||
* Samsung S3C DMA support
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
enum s3c2410_dma_buffresult {
|
||||
S3C2410_RES_OK,
|
||||
S3C2410_RES_ERR,
|
||||
S3C2410_RES_ABORT
|
||||
};
|
||||
|
||||
enum s3c2410_dmasrc {
|
||||
S3C2410_DMASRC_HW, /* source is memory */
|
||||
S3C2410_DMASRC_MEM /* source is hardware */
|
||||
};
|
||||
|
||||
/* enum s3c2410_chan_op
|
||||
*
|
||||
* operation codes passed to the DMA code by the user, and also used
|
||||
* to inform the current channel owner of any changes to the system state
|
||||
*/
|
||||
|
||||
enum s3c2410_chan_op {
|
||||
S3C2410_DMAOP_START,
|
||||
S3C2410_DMAOP_STOP,
|
||||
S3C2410_DMAOP_PAUSE,
|
||||
S3C2410_DMAOP_RESUME,
|
||||
S3C2410_DMAOP_FLUSH,
|
||||
S3C2410_DMAOP_TIMEOUT, /* internal signal to handler */
|
||||
S3C2410_DMAOP_STARTED, /* indicate channel started */
|
||||
};
|
||||
|
||||
struct s3c2410_dma_client {
|
||||
char *name;
|
||||
};
|
||||
|
||||
struct s3c2410_dma_chan;
|
||||
|
||||
/* s3c2410_dma_cbfn_t
|
||||
*
|
||||
* buffer callback routine type
|
||||
*/
|
||||
|
||||
typedef void (*s3c2410_dma_cbfn_t)(struct s3c2410_dma_chan *,
|
||||
void *buf, int size,
|
||||
enum s3c2410_dma_buffresult result);
|
||||
|
||||
typedef int (*s3c2410_dma_opfn_t)(struct s3c2410_dma_chan *,
|
||||
enum s3c2410_chan_op );
|
||||
|
||||
|
||||
|
||||
/* s3c2410_dma_request
|
||||
*
|
||||
* request a dma channel exclusivley
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_request(unsigned int channel,
|
||||
struct s3c2410_dma_client *, void *dev);
|
||||
|
||||
|
||||
/* s3c2410_dma_ctrl
|
||||
*
|
||||
* change the state of the dma channel
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_ctrl(unsigned int channel, enum s3c2410_chan_op op);
|
||||
|
||||
/* s3c2410_dma_setflags
|
||||
*
|
||||
* set the channel's flags to a given state
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_setflags(unsigned int channel,
|
||||
unsigned int flags);
|
||||
|
||||
/* s3c2410_dma_free
|
||||
*
|
||||
* free the dma channel (will also abort any outstanding operations)
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_free(unsigned int channel, struct s3c2410_dma_client *);
|
||||
|
||||
/* s3c2410_dma_enqueue
|
||||
*
|
||||
* place the given buffer onto the queue of operations for the channel.
|
||||
* The buffer must be allocated from dma coherent memory, or the Dcache/WB
|
||||
* drained before the buffer is given to the DMA system.
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_enqueue(unsigned int channel, void *id,
|
||||
dma_addr_t data, int size);
|
||||
|
||||
/* s3c2410_dma_config
|
||||
*
|
||||
* configure the dma channel
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_config(unsigned int channel, int xferunit);
|
||||
|
||||
/* s3c2410_dma_devconfig
|
||||
*
|
||||
* configure the device we're talking to
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_devconfig(int channel, enum s3c2410_dmasrc source,
|
||||
unsigned long devaddr);
|
||||
|
||||
/* s3c2410_dma_getposition
|
||||
*
|
||||
* get the position that the dma transfer is currently at
|
||||
*/
|
||||
|
||||
extern int s3c2410_dma_getposition(unsigned int channel,
|
||||
dma_addr_t *src, dma_addr_t *dest);
|
||||
|
||||
extern int s3c2410_dma_set_opfn(unsigned int, s3c2410_dma_opfn_t rtn);
|
||||
extern int s3c2410_dma_set_buffdone_fn(unsigned int, s3c2410_dma_cbfn_t rtn);
|
||||
|
||||
|
||||
Reference in New Issue