sdio: support IO_RW_EXTENDED
Support the multi-byte transfer operation, including handlers for
common operations like writel()/readl().
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index a8d268c..af813ff 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -48,6 +48,8 @@
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 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