diff options
Diffstat (limited to 'drivers/mtd/nand')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index ab6db698cbd8..c84fd6c35496 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -52,18 +52,6 @@ #define NFC_CONFIG1 0xE1A #define NFC_CONFIG2 0xE1C -/* Addresses for NFC RAM BUFFER Main area 0 */ -#define MAIN_AREA0 0x000 -#define MAIN_AREA1 0x200 -#define MAIN_AREA2 0x400 -#define MAIN_AREA3 0x600 - -/* Addresses for NFC SPARE BUFFER Spare area 0 */ -#define SPARE_AREA0 0x800 -#define SPARE_AREA1 0x810 -#define SPARE_AREA2 0x820 -#define SPARE_AREA3 0x830 - /* Set INT to 0, FCMD to 1, rest to 0 in NFC_CONFIG2 Register * for Command operation */ #define NFC_CMD 0x1 @@ -106,6 +94,11 @@ struct mxc_nand_host { struct mtd_partition *parts; struct device *dev; + void *spare0; + void *main_area0; + void *main_area1; + + void __iomem *base; void __iomem *regs; int status_request; int pagesize_2k; @@ -262,7 +255,7 @@ static void send_read_id(struct mxc_nand_host *host) wait_op_done(host, TROP_US_DELAY, true); if (this->options & NAND_BUSWIDTH_16) { - void __iomem *main_buf = host->regs + MAIN_AREA0; + void __iomem *main_buf = host->main_area0; /* compress the ID info */ writeb(readb(main_buf + 2), main_buf + 1); writeb(readb(main_buf + 4), main_buf + 2); @@ -270,14 +263,14 @@ static void send_read_id(struct mxc_nand_host *host) writeb(readb(main_buf + 8), main_buf + 4); writeb(readb(main_buf + 10), main_buf + 5); } - memcpy(host->data_buf, host->regs + MAIN_AREA0, 16); + memcpy(host->data_buf, host->main_area0, 16); } /* This function requests the NANDFC to perform a read of the * NAND device status and returns the current status. */ static uint16_t get_dev_status(struct mxc_nand_host *host) { - void __iomem *main_buf = host->regs + MAIN_AREA1; + void __iomem *main_buf = host->main_area1; uint32_t store; uint16_t ret, tmp; /* Issue status request to NAND device */ @@ -462,7 +455,7 @@ static void copy_spare(struct mtd_info *mtd, bool bfrom) u16 i, j; u16 n = mtd->writesize >> 9; u8 *d = host->data_buf + mtd->writesize; - u8 *s = host->regs + SPARE_AREA0; + u8 *s = host->spare0; u16 t = host->spare_len; j = (mtd->oobsize / n >> 1) << 1; @@ -572,7 +565,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, send_page(host, NFC_OUTPUT); - memcpy(host->data_buf, host->regs + MAIN_AREA0, mtd->writesize); + memcpy(host->data_buf, host->main_area0, mtd->writesize); copy_spare(mtd, true); break; @@ -608,7 +601,7 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, break; case NAND_CMD_PAGEPROG: - memcpy(host->regs + MAIN_AREA0, host->data_buf, mtd->writesize); + memcpy(host->main_area0, host->data_buf, mtd->writesize); copy_spare(mtd, false); send_page(host, NFC_INPUT); send_cmd(host, command, true); @@ -686,12 +679,17 @@ static int __init mxcnd_probe(struct platform_device *pdev) goto eres; } - host->regs = ioremap(res->start, resource_size(res)); - if (!host->regs) { + host->base = ioremap(res->start, resource_size(res)); + if (!host->base) { err = -ENOMEM; goto eres; } + host->regs = host->base; + host->main_area0 = host->base; + host->main_area1 = host->base + 0x200; + host->spare0 = host->base + 0x800; + tmp = readw(host->regs + NFC_CONFIG1); tmp |= NFC_INT_MSK; writew(tmp, host->regs + NFC_CONFIG1); @@ -778,7 +776,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) escan: free_irq(host->irq, host); eirq: - iounmap(host->regs); + iounmap(host->base); eres: clk_put(host->clk); eclk: @@ -797,7 +795,7 @@ static int __exit mxcnd_remove(struct platform_device *pdev) nand_release(&host->mtd); free_irq(host->irq, host); - iounmap(host->regs); + iounmap(host->base); kfree(host); return 0; |