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sdio: support IO_RW_EXTENDED

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Support the multi-byte transfer operation, including handlers for
common operations like writel()/readl().

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Pierre Ossman
2007-07-06 13:35:01 +02:00
parent 5ed334a1f8
commit 112c9db91e
5 changed files with 275 additions and 0 deletions
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12
include/linux/mmc/sdio.h
View File

@@ -15,6 +15,7 @@
/* SDIO commands type argument response */
#define SD_IO_SEND_OP_COND 5 /* bcr [23:0] OCR R4 */
#define SD_IO_RW_DIRECT 52 /* ac [31:0] See below R5 */
#define SD_IO_RW_EXTENDED 53 /* adtc [31:0] See below R5 */
/*
* SD_IO_RW_DIRECT argument format:
@@ -26,6 +27,17 @@
* [7:0] Data
*/
/*
* SD_IO_RW_EXTENDED argument format:
*
* [31] R/W flag
* [30:28] Function number
* [27] Block mode
* [26] Increment address
* [25:9] Register address
* [8:0] Byte/block count
*/
/*
SDIO status in R5
Type

20
include/linux/mmc/sdio_func.h
View File

@@ -48,6 +48,8 @@ struct sdio_func {
unsigned int state; /* function state */
#define SDIO_STATE_PRESENT (1<<0) /* present in sysfs */
u8 tmpbuf[4]; /* DMA:able scratch buffer */
struct sdio_func_tuple *tuples;
};
@@ -114,9 +116,27 @@ extern int sdio_release_irq(struct sdio_func *func);
extern unsigned char sdio_readb(struct sdio_func *func,
unsigned int addr, int *err_ret);
extern unsigned short sdio_readw(struct sdio_func *func,
unsigned int addr, int *err_ret);
extern unsigned long sdio_readl(struct sdio_func *func,
unsigned int addr, int *err_ret);
extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
unsigned int addr, int count);
extern int sdio_readsb(struct sdio_func *func, void *dst,
unsigned int addr, int count);
extern void sdio_writeb(struct sdio_func *func, unsigned char b,
unsigned int addr, int *err_ret);
extern void sdio_writew(struct sdio_func *func, unsigned short b,
unsigned int addr, int *err_ret);
extern void sdio_writel(struct sdio_func *func, unsigned long b,
unsigned int addr, int *err_ret);
extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
void *src, int count);
extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
void *src, int count);
#endif