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| author | Michal Simek <monstr@monstr.eu> | 2012-07-04 12:09:45 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2012-09-11 09:24:16 +0200 |
| commit | 5340a7f1d74ba65c4c63d6d9d0ad606553866ffe (patch) | |
| tree | f591a4dc849ceae38c90e12696ef1e890d4e73ea /drivers | |
| parent | a6f0c4faa4c65a7b7048b12c9d180d7e1aad1721 (diff) | |
| download | u-boot-imx-5340a7f1d74ba65c4c63d6d9d0ad606553866ffe.zip u-boot-imx-5340a7f1d74ba65c4c63d6d9d0ad606553866ffe.tar.gz u-boot-imx-5340a7f1d74ba65c4c63d6d9d0ad606553866ffe.tar.bz2 | |
block: systemace: Simplify base and width initialization
Use CONFIG parameters only at one location to simplify
the code. Also create ace_readw/writew functions.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/systemace.c | 38 |
1 files changed, 25 insertions, 13 deletions
diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c index 58402b9..247cf06 100644 --- a/drivers/block/systemace.c +++ b/drivers/block/systemace.c @@ -51,24 +51,36 @@ * to be the base address for the chip, usually in the local * peripheral bus. */ -#if (CONFIG_SYS_SYSTEMACE_WIDTH == 8) + +static u32 base = CONFIG_SYS_SYSTEMACE_BASE; +static u32 width = CONFIG_SYS_SYSTEMACE_WIDTH; + +static void ace_writew(u16 val, unsigned off) +{ + if (width == 8) { #if !defined(__BIG_ENDIAN) -#define ace_readw(off) ((readb(CONFIG_SYS_SYSTEMACE_BASE+off)<<8) | \ - (readb(CONFIG_SYS_SYSTEMACE_BASE+off+1))) -#define ace_writew(val, off) {writeb(val>>8, CONFIG_SYS_SYSTEMACE_BASE+off); \ - writeb(val, CONFIG_SYS_SYSTEMACE_BASE+off+1);} + writeb(val >> 8, base + off); + writeb(val, base + off + 1); #else -#define ace_readw(off) ((readb(CONFIG_SYS_SYSTEMACE_BASE+off)) | \ - (readb(CONFIG_SYS_SYSTEMACE_BASE+off+1)<<8)) -#define ace_writew(val, off) {writeb(val, CONFIG_SYS_SYSTEMACE_BASE+off); \ - writeb(val>>8, CONFIG_SYS_SYSTEMACE_BASE+off+1);} + writeb(val, base + off); + writeb(val >> 8, base + off + 1); #endif + } + out16(base + off, val); +} + +static u16 ace_readw(unsigned off) +{ + if (width == 8) { +#if !defined(__BIG_ENDIAN) + return (readb(base + off) << 8) | readb(base + off + 1); #else -#define ace_readw(off) (in16(CONFIG_SYS_SYSTEMACE_BASE+off)) -#define ace_writew(val, off) (out16(CONFIG_SYS_SYSTEMACE_BASE+off,val)) + return readb(base + off) | (readb(base + off + 1) << 8); #endif + } -/* */ + return in16(base + off); +} static unsigned long systemace_read(int dev, unsigned long start, unsigned long blkcnt, void *buffer); @@ -121,7 +133,7 @@ block_dev_desc_t *systemace_get_dev(int dev) /* * Ensure the correct bus mode (8/16 bits) gets enabled */ - ace_writew(CONFIG_SYS_SYSTEMACE_WIDTH == 8 ? 0 : 0x0001, 0); + ace_writew(width == 8 ? 0 : 0x0001, 0); init_part(&systemace_dev); |