From 1d6432fe10c3e724e307dd7137cd293a0edcae80 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sun, 8 Jan 2006 13:34:22 -0800 Subject: [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 Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/spi/flash.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/linux/spi/flash.h (limited to 'include/linux/spi/flash.h') diff --git a/include/linux/spi/flash.h b/include/linux/spi/flash.h new file mode 100644 index 00000000000..2ce6558bf3f --- /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 -- cgit v1.2.3-70-g09d2