diff options
Diffstat (limited to 'include/linux/mtd/fsmc.h')
| -rw-r--r-- | include/linux/mtd/fsmc.h | 169 |
1 files changed, 91 insertions, 78 deletions
diff --git a/include/linux/mtd/fsmc.h b/include/linux/mtd/fsmc.h index 6987995..b200292 100644 --- a/include/linux/mtd/fsmc.h +++ b/include/linux/mtd/fsmc.h @@ -26,95 +26,83 @@ #define FSMC_NAND_BW8 1 #define FSMC_NAND_BW16 2 -/* - * The placement of the Command Latch Enable (CLE) and - * Address Latch Enable (ALE) is twisted around in the - * SPEAR310 implementation. - */ -#if defined(CONFIG_MACH_SPEAR310) -#define PLAT_NAND_CLE (1 << 17) -#define PLAT_NAND_ALE (1 << 16) -#else -#define PLAT_NAND_CLE (1 << 16) -#define PLAT_NAND_ALE (1 << 17) -#endif - #define FSMC_MAX_NOR_BANKS 4 #define FSMC_MAX_NAND_BANKS 4 #define FSMC_FLASH_WIDTH8 1 #define FSMC_FLASH_WIDTH16 2 -struct fsmc_nor_bank_regs { - uint32_t ctrl; - uint32_t ctrl_tim; -}; - -/* ctrl register definitions */ -#define BANK_ENABLE (1 << 0) -#define MUXED (1 << 1) -#define NOR_DEV (2 << 2) -#define WIDTH_8 (0 << 4) -#define WIDTH_16 (1 << 4) -#define RSTPWRDWN (1 << 6) -#define WPROT (1 << 7) -#define WRT_ENABLE (1 << 12) -#define WAIT_ENB (1 << 13) - -/* ctrl_tim register definitions */ - -struct fsmc_nand_bank_regs { - uint32_t pc; - uint32_t sts; - uint32_t comm; - uint32_t attrib; - uint32_t ioata; - uint32_t ecc1; - uint32_t ecc2; - uint32_t ecc3; -}; - +/* fsmc controller registers for NOR flash */ +#define CTRL 0x0 + /* ctrl register definitions */ + #define BANK_ENABLE (1 << 0) + #define MUXED (1 << 1) + #define NOR_DEV (2 << 2) + #define WIDTH_8 (0 << 4) + #define WIDTH_16 (1 << 4) + #define RSTPWRDWN (1 << 6) + #define WPROT (1 << 7) + #define WRT_ENABLE (1 << 12) + #define WAIT_ENB (1 << 13) + +#define CTRL_TIM 0x4 + /* ctrl_tim register definitions */ + +#define FSMC_NOR_BANK_SZ 0x8 #define FSMC_NOR_REG_SIZE 0x40 -struct fsmc_regs { - struct fsmc_nor_bank_regs nor_bank_regs[FSMC_MAX_NOR_BANKS]; - uint8_t reserved_1[0x40 - 0x20]; - struct fsmc_nand_bank_regs bank_regs[FSMC_MAX_NAND_BANKS]; - uint8_t reserved_2[0xfe0 - 0xc0]; - uint32_t peripid0; /* 0xfe0 */ - uint32_t peripid1; /* 0xfe4 */ - uint32_t peripid2; /* 0xfe8 */ - uint32_t peripid3; /* 0xfec */ - uint32_t pcellid0; /* 0xff0 */ - uint32_t pcellid1; /* 0xff4 */ - uint32_t pcellid2; /* 0xff8 */ - uint32_t pcellid3; /* 0xffc */ -}; +#define FSMC_NOR_REG(base, bank, reg) (base + \ + FSMC_NOR_BANK_SZ * (bank) + \ + reg) + +/* fsmc controller registers for NAND flash */ +#define PC 0x00 + /* pc register definitions */ + #define FSMC_RESET (1 << 0) + #define FSMC_WAITON (1 << 1) + #define FSMC_ENABLE (1 << 2) + #define FSMC_DEVTYPE_NAND (1 << 3) + #define FSMC_DEVWID_8 (0 << 4) + #define FSMC_DEVWID_16 (1 << 4) + #define FSMC_ECCEN (1 << 6) + #define FSMC_ECCPLEN_512 (0 << 7) + #define FSMC_ECCPLEN_256 (1 << 7) + #define FSMC_TCLR_1 (1) + #define FSMC_TCLR_SHIFT (9) + #define FSMC_TCLR_MASK (0xF) + #define FSMC_TAR_1 (1) + #define FSMC_TAR_SHIFT (13) + #define FSMC_TAR_MASK (0xF) +#define STS 0x04 + /* sts register definitions */ + #define FSMC_CODE_RDY (1 << 15) +#define COMM 0x08 + /* comm register definitions */ + #define FSMC_TSET_0 0 + #define FSMC_TSET_SHIFT 0 + #define FSMC_TSET_MASK 0xFF + #define FSMC_TWAIT_6 6 + #define FSMC_TWAIT_SHIFT 8 + #define FSMC_TWAIT_MASK 0xFF + #define FSMC_THOLD_4 4 + #define FSMC_THOLD_SHIFT 16 + #define FSMC_THOLD_MASK 0xFF + #define FSMC_THIZ_1 1 + #define FSMC_THIZ_SHIFT 24 + #define FSMC_THIZ_MASK 0xFF +#define ATTRIB 0x0C +#define IOATA 0x10 +#define ECC1 0x14 +#define ECC2 0x18 +#define ECC3 0x1C +#define FSMC_NAND_BANK_SZ 0x20 + +#define FSMC_NAND_REG(base, bank, reg) (base + FSMC_NOR_REG_SIZE + \ + (FSMC_NAND_BANK_SZ * (bank)) + \ + reg) #define FSMC_BUSY_WAIT_TIMEOUT (1 * HZ) -/* pc register definitions */ -#define FSMC_RESET (1 << 0) -#define FSMC_WAITON (1 << 1) -#define FSMC_ENABLE (1 << 2) -#define FSMC_DEVTYPE_NAND (1 << 3) -#define FSMC_DEVWID_8 (0 << 4) -#define FSMC_DEVWID_16 (1 << 4) -#define FSMC_ECCEN (1 << 6) -#define FSMC_ECCPLEN_512 (0 << 7) -#define FSMC_ECCPLEN_256 (1 << 7) -#define FSMC_TCLR_1 (1 << 9) -#define FSMC_TAR_1 (1 << 13) - -/* sts register definitions */ -#define FSMC_CODE_RDY (1 << 15) - -/* comm register definitions */ -#define FSMC_TSET_0 (0 << 0) -#define FSMC_TWAIT_6 (6 << 8) -#define FSMC_THOLD_4 (4 << 16) -#define FSMC_THIZ_1 (1 << 24) - /* * There are 13 bytes of ecc for every 512 byte block in FSMC version 8 * and it has to be read consecutively and immediately after the 512 @@ -133,6 +121,20 @@ struct fsmc_eccplace { struct fsmc_nand_eccplace eccplace[MAX_ECCPLACE_ENTRIES]; }; +struct fsmc_nand_timings { + uint8_t tclr; + uint8_t tar; + uint8_t thiz; + uint8_t thold; + uint8_t twait; + uint8_t tset; +}; + +enum access_mode { + USE_DMA_ACCESS = 1, + USE_WORD_ACCESS, +}; + /** * fsmc_nand_platform_data - platform specific NAND controller config * @partitions: partition table for the platform, use a default fallback @@ -146,12 +148,23 @@ struct fsmc_eccplace { * this may be set to NULL */ struct fsmc_nand_platform_data { + struct fsmc_nand_timings *nand_timings; struct mtd_partition *partitions; unsigned int nr_partitions; unsigned int options; unsigned int width; unsigned int bank; + + /* CLE, ALE offsets */ + unsigned int cle_off; + unsigned int ale_off; + enum access_mode mode; + void (*select_bank)(uint32_t bank, uint32_t busw); + + /* priv structures for dma accesses */ + void *read_dma_priv; + void *write_dma_priv; }; extern int __init fsmc_nor_init(struct platform_device *pdev, |
