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Subject[PATCH v2 3/6] floppy: prepare ARM code to simplify base address separation
Date
The fd_outb() macro on ARM relies on a special fd_setdor() macro when
the register is FD_DOR and both will need to be changed to accept a
separate base address. Let's just remerge them to simplify the change
and make this code more easily reviewable.

Cc: Ian Molton <spyro@f2s.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
---
arch/arm/include/asm/floppy.h | 27 +++++++++++----------------
1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/arch/arm/include/asm/floppy.h b/arch/arm/include/asm/floppy.h
index 7e58979..34ebd86 100644
--- a/arch/arm/include/asm/floppy.h
+++ b/arch/arm/include/asm/floppy.h
@@ -9,12 +9,17 @@
#ifndef __ASM_ARM_FLOPPY_H
#define __ASM_ARM_FLOPPY_H

-#define fd_outb(val,port) \
- do { \
- if ((port) == (u32)FD_DOR) \
- fd_setdor((val)); \
- else \
- outb((val),(port)); \
+#define fd_outb(val,port) \
+ do { \
+ int new_val = (val); \
+ if ((port) == (u32)FD_DOR) { \
+ if (new_val & 0xf0) \
+ new_val = (new_val & 0x0c) | \
+ floppy_selects[new_val & 3]; \
+ else \
+ new_val &= 0x0c; \
+ } \
+ outb(new_val, (port)); \
} while(0)

#define fd_inb(port) inb((port))
@@ -52,16 +57,6 @@ static inline int fd_dma_setup(void *data, unsigned int length,
*/
static unsigned char floppy_selects[4] = { 0x10, 0x21, 0x23, 0x33 };

-#define fd_setdor(dor) \
-do { \
- int new_dor = (dor); \
- if (new_dor & 0xf0) \
- new_dor = (new_dor & 0x0c) | floppy_selects[new_dor & 3]; \
- else \
- new_dor &= 0x0c; \
- outb(new_dor, FD_DOR); \
-} while (0)
-
#define FDC1 (0x3f0)

#define FLOPPY0_TYPE 4
--
2.9.0
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