diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/omap_gpmc.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c index 1acf06b..96618e1 100644 --- a/drivers/mtd/nand/omap_gpmc.c +++ b/drivers/mtd/nand/omap_gpmc.c @@ -27,10 +27,22 @@ static u8 bch8_polynomial[] = {0xef, 0x51, 0x2e, 0x09, 0xed, 0x93, 0x9a, 0xc2, 0x97, 0x79, 0xe5, 0x24, 0xb5}; #endif -static uint8_t cs; +static uint8_t cs_next; static __maybe_unused struct nand_ecclayout omap_ecclayout; /* + * Driver configurations + */ +struct omap_nand_info { + struct bch_control *control; + enum omap_ecc ecc_scheme; + int cs; +}; + +/* We are wasting a bit of memory but al least we are safe */ +static struct omap_nand_info omap_nand_info[GPMC_MAX_CS]; + +/* * omap_nand_hwcontrol - Set the address pointers corretly for the * following address/data/command operation */ @@ -38,6 +50,8 @@ static void omap_nand_hwcontrol(struct mtd_info *mtd, int32_t cmd, uint32_t ctrl) { register struct nand_chip *this = mtd->priv; + struct omap_nand_info *info = this->priv; + int cs = info->cs; /* * Point the IO_ADDR to DATA and ADDRESS registers instead @@ -148,24 +162,6 @@ static int __maybe_unused omap_correct_data(struct mtd_info *mtd, uint8_t *dat, } /* - * Driver configurations - */ -struct omap_nand_info { - struct bch_control *control; - enum omap_ecc ecc_scheme; -}; - -/* - * This can be a single instance cause all current users have only one NAND - * with nearly the same setup (BCH8, some with ELM and others with sw BCH - * library). - * When some users with other BCH strength will exists this have to change! - */ -static __maybe_unused struct omap_nand_info omap_nand_info = { - .control = NULL -}; - -/* * omap_reverse_list - re-orders list elements in reverse order [internal] * @list: pointer to start of list * @length: length of list @@ -198,6 +194,7 @@ static void omap_enable_hwecc(struct mtd_info *mtd, int32_t mode) unsigned int eccsize1 = 0x00, eccsize0 = 0x00, bch_wrapmode = 0x00; u32 ecc_size_config_val = 0; u32 ecc_config_val = 0; + int cs = info->cs; /* configure GPMC for specific ecc-scheme */ switch (info->ecc_scheme) { @@ -826,7 +823,7 @@ int __maybe_unused omap_nand_switch_ecc(uint32_t hardware, uint32_t eccstrength) int board_nand_init(struct nand_chip *nand) { int32_t gpmc_config = 0; - cs = 0; + int cs = cs_next++; int err = 0; /* * xloader/Uboot's gpmc configuration would have configured GPMC for @@ -856,7 +853,9 @@ int board_nand_init(struct nand_chip *nand) nand->IO_ADDR_R = (void __iomem *)&gpmc_cfg->cs[cs].nand_dat; nand->IO_ADDR_W = (void __iomem *)&gpmc_cfg->cs[cs].nand_cmd; - nand->priv = &omap_nand_info; + omap_nand_info[cs].control = NULL; + omap_nand_info[cs].cs = cs; + nand->priv = &omap_nand_info[cs]; nand->cmd_ctrl = omap_nand_hwcontrol; nand->options |= NAND_NO_PADDING | NAND_CACHEPRG; nand->chip_delay = 100; @@ -890,6 +889,5 @@ int board_nand_init(struct nand_chip *nand) nand->read_buf = nand_read_buf; nand->dev_ready = omap_spl_dev_ready; #endif - return 0; } |