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23a346ca4a
This uses __raw_{read,write}s{b,w}() primitives to access data on NAND
chips for more efficient I/O.
On an arm926 with memory clocked at 100 MHz, this reduced the elapsed time
for a 64 MiB read by 16%. ("dd" /dev/mtd0 to /dev/null, with an 8-bit
NAND using hardware ECC and 128KiB blocksize.)
Also some minor section tweaks:
- Use platform_driver_probe() so no pointer to probe() lingers
after that code has been removed at run-time.
- Use __exit and __exit_p so the remove() code will normally be
removed by the linker.
Since these buffer read/write calls are new, this increases the runtime
code footprint (by 88 bytes on my build, after the section tweaks).
[haavard.skinnemoen@atmel.com: rebase onto atmel_nand rename]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Håvard Skinnemoen <haavard.skinnemoen@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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| .. | ||
| alauda.c | ||
| ams-delta.c | ||
| atmel_nand.c | ||
| atmel_nand_ecc.h | ||
| au1550nd.c | ||
| autcpu12.c | ||
| bf5xx_nand.c | ||
| cafe_nand.c | ||
| cmx270_nand.c | ||
| cs553x_nand.c | ||
| diskonchip.c | ||
| edb7312.c | ||
| excite_nandflash.c | ||
| fsl_elbc_nand.c | ||
| fsl_upm.c | ||
| h1910.c | ||
| Kconfig | ||
| Makefile | ||
| nand_base.c | ||
| nand_bbt.c | ||
| nand_ecc.c | ||
| nand_ids.c | ||
| nandsim.c | ||
| ndfc.c | ||
| orion_nand.c | ||
| pasemi_nand.c | ||
| plat_nand.c | ||
| ppchameleonevb.c | ||
| pxa3xx_nand.c | ||
| rtc_from4.c | ||
| s3c2410.c | ||
| sharpsl.c | ||
| spia.c | ||
| toto.c | ||
| ts7250.c | ||