From b5aec1424d191c51f694ba85d5577e7a635363d9 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Mon, 11 Mar 2013 06:08:02 +0000 Subject: sf: Add spi_flash_alloc() to create a new SPI flash struct At present it is difficult to extend the SPI flash structure since all devices allocate it themselves, and few of them zero all fields. Add a new function spi_flash_alloc() which can be used by SPI devices to perform this allocation, and thus ensure that all devices can better cope with SPI structure changes. Signed-off-by: Simon Glass --- drivers/mtd/spi/spi_flash.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'drivers') diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 00aece9291c..17f3d3cb147 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -401,6 +401,31 @@ err_claim_bus: return NULL; } +void *spi_flash_do_alloc(int offset, int size, struct spi_slave *spi, + const char *name) +{ + struct spi_flash *flash; + void *ptr; + + ptr = malloc(size); + if (!ptr) { + debug("SF: Failed to allocate memory\n"); + return NULL; + } + memset(ptr, '\0', size); + flash = (struct spi_flash *)(ptr + offset); + + /* Set up some basic fields - caller will sort out sizes */ + flash->spi = spi; + flash->name = name; + + flash->read = spi_flash_cmd_read_fast; + flash->write = spi_flash_cmd_write_multi; + flash->erase = spi_flash_cmd_erase; + + return flash; +} + void spi_flash_free(struct spi_flash *flash) { spi_free_slave(flash->spi); -- cgit v1.2.3