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author | David Brownell <david-b@pacbell.net> | 2006-01-08 13:34:22 -0800 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-01-13 16:29:54 -0800 |
commit | 1d6432fe10c3e724e307dd7137cd293a0edcae80 (patch) | |
tree | e32ba2eaecff99b2b86455ed2df8365b082cd396 /include/linux/spi | |
parent | ffa458c1bd9b6f653008d450f337602f3d52a646 (diff) | |
download | linux-1d6432fe10c3e724e307dd7137cd293a0edcae80.tar.gz linux-1d6432fe10c3e724e307dd7137cd293a0edcae80.tar.bz2 linux-1d6432fe10c3e724e307dd7137cd293a0edcae80.zip |
[PATCH] spi: mtd dataflash driver
This is a conversion of the AT91rm9200 DataFlash MTD driver to use the
lightweight SPI framework, and no longer be AT91-specific. It compiles
down to less than 3KBytes on ARM.
The driver allows board-specific init code to provide platform_data with
the relevant MTD partitioning information, and hotplugs.
This version has been lightly tested. Its parent at91_dataflash driver has
been pretty well banged on, although kernel.org JFFS2 dataflash support was
acting broken the last time I tried it.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/spi')
-rw-r--r-- | include/linux/spi/flash.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/spi/flash.h b/include/linux/spi/flash.h new file mode 100644 index 000000000000..2ce6558bf3f8 --- /dev/null +++ b/include/linux/spi/flash.h @@ -0,0 +1,27 @@ +#ifndef LINUX_SPI_FLASH_H +#define LINUX_SPI_FLASH_H + +struct mtd_partition; + +/** + * struct flash_platform_data: board-specific flash data + * @name: optional flash device name (eg, as used with mtdparts=) + * @parts: optional array of mtd_partitions for static partitioning + * @nr_parts: number of mtd_partitions for static partitoning + * + * Board init code (in arch/.../mach-xxx/board-yyy.c files) can + * provide information about SPI flash parts (such as DataFlash) to + * help set up the device and its appropriate default partitioning. + * + * Note that for DataFlash, sizes for pages, blocks, and sectors are + * rarely powers of two; and partitions should be sector-aligned. + */ +struct flash_platform_data { + char *name; + struct mtd_partition *parts; + unsigned int nr_parts; + + /* we'll likely add more ... use JEDEC IDs, etc */ +}; + +#endif |