diff options
Diffstat (limited to 'include/spi_flash.h')
| -rw-r--r-- | include/spi_flash.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/spi_flash.h b/include/spi_flash.h index 9da9062..3b6a44e 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -39,6 +39,7 @@ struct spi_flash { /* Erase (sector) size */ u32 sector_size; + void *memory_map; /* Address of read-only SPI flash access */ int (*read)(struct spi_flash *flash, u32 offset, size_t len, void *buf); int (*write)(struct spi_flash *flash, u32 offset, @@ -47,6 +48,44 @@ struct spi_flash { size_t len); }; +/** + * spi_flash_do_alloc - Allocate a new spi flash structure + * + * The structure is allocated and cleared with default values for + * read, write and erase, which the caller can modify. The caller must set + * up size, page_size and sector_size. + * + * Use the helper macro spi_flash_alloc() to call this. + * + * @offset: Offset of struct spi_slave within slave structure + * @size: Size of slave structure + * @spi: SPI slave + * @name: Name of SPI flash device + */ +void *spi_flash_do_alloc(int offset, int size, struct spi_slave *spi, + const char *name); + +/** + * spi_flash_alloc - Allocate a new SPI flash structure + * + * @_struct: Name of structure to allocate (e.g. struct ramtron_spi_fram). This + * structure must contain a member 'struct spi_flash *flash'. + * @spi: SPI slave + * @name: Name of SPI flash device + */ +#define spi_flash_alloc(_struct, spi, name) \ + spi_flash_do_alloc(offsetof(_struct, flash), sizeof(_struct), \ + spi, name) + +/** + * spi_flash_alloc_base - Allocate a new SPI flash structure with no private data + * + * @spi: SPI slave + * @name: Name of SPI flash device + */ +#define spi_flash_alloc_base(spi, name) \ + spi_flash_do_alloc(0, sizeof(struct spi_flash), spi, name) + struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int spi_mode); void spi_flash_free(struct spi_flash *flash); |