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author | Arnd Bergmann <arnd@arndb.de> | 2011-11-23 20:47:41 +0000 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2011-11-23 20:47:41 +0000 |
commit | 58a273745fbb2fbd01d26e7a60f0acc8c1d99469 (patch) | |
tree | bc16200f3b6ea150b298422754e32959eaa339bc /drivers/mtd/nand/atmel_nand.c | |
parent | 951c486f62490e032da0ad17e93270b0cfb6687f (diff) | |
parent | 0116da4fcc1ae8a80d9002441e98768f2a6fa2fe (diff) | |
download | blackbird-op-linux-58a273745fbb2fbd01d26e7a60f0acc8c1d99469.tar.gz blackbird-op-linux-58a273745fbb2fbd01d26e7a60f0acc8c1d99469.zip |
Merge branches 'drivers/macb-gem' and 'drivers/pxa-gpio' into next/drivers
Diffstat (limited to 'drivers/mtd/nand/atmel_nand.c')
-rw-r--r-- | drivers/mtd/nand/atmel_nand.c | 74 |
1 files changed, 8 insertions, 66 deletions
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 55da20ccc7a8..23e5d77c39fc 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -161,37 +161,6 @@ static int atmel_nand_device_ready(struct mtd_info *mtd) !!host->board->rdy_pin_active_low; } -/* - * Minimal-overhead PIO for data access. - */ -static void atmel_read_buf8(struct mtd_info *mtd, u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_readsb(nand_chip->IO_ADDR_R, buf, len); -} - -static void atmel_read_buf16(struct mtd_info *mtd, u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_readsw(nand_chip->IO_ADDR_R, buf, len / 2); -} - -static void atmel_write_buf8(struct mtd_info *mtd, const u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_writesb(nand_chip->IO_ADDR_W, buf, len); -} - -static void atmel_write_buf16(struct mtd_info *mtd, const u8 *buf, int len) -{ - struct nand_chip *nand_chip = mtd->priv; - - __raw_writesw(nand_chip->IO_ADDR_W, buf, len / 2); -} - static void dma_complete_func(void *completion) { complete(completion); @@ -266,33 +235,27 @@ err_buf: static void atmel_read_buf(struct mtd_info *mtd, u8 *buf, int len) { struct nand_chip *chip = mtd->priv; - struct atmel_nand_host *host = chip->priv; if (use_dma && len > mtd->oobsize) /* only use DMA for bigger than oob size: better performances */ if (atmel_nand_dma_op(mtd, buf, len, 1) == 0) return; - if (host->board->bus_width_16) - atmel_read_buf16(mtd, buf, len); - else - atmel_read_buf8(mtd, buf, len); + /* if no DMA operation possible, use PIO */ + memcpy_fromio(buf, chip->IO_ADDR_R, len); } static void atmel_write_buf(struct mtd_info *mtd, const u8 *buf, int len) { struct nand_chip *chip = mtd->priv; - struct atmel_nand_host *host = chip->priv; if (use_dma && len > mtd->oobsize) /* only use DMA for bigger than oob size: better performances */ if (atmel_nand_dma_op(mtd, (void *)buf, len, 0) == 0) return; - if (host->board->bus_width_16) - atmel_write_buf16(mtd, buf, len); - else - atmel_write_buf8(mtd, buf, len); + /* if no DMA operation possible, use PIO */ + memcpy_toio(chip->IO_ADDR_W, buf, len); } /* @@ -481,10 +444,6 @@ static void atmel_nand_hwctl(struct mtd_info *mtd, int mode) } } -#ifdef CONFIG_MTD_CMDLINE_PARTS -static const char *part_probes[] = { "cmdlinepart", NULL }; -#endif - /* * Probe for the NAND device. */ @@ -496,8 +455,6 @@ static int __init atmel_nand_probe(struct platform_device *pdev) struct resource *regs; struct resource *mem; int res; - struct mtd_partition *partitions = NULL; - int num_partitions = 0; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) { @@ -583,7 +540,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (on_flash_bbt) { printk(KERN_INFO "atmel_nand: Use On Flash BBT\n"); - nand_chip->options |= NAND_USE_FLASH_BBT; + nand_chip->bbt_options |= NAND_BBT_USE_FLASH; } if (!cpu_has_dma()) @@ -594,7 +551,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) dma_cap_zero(mask); dma_cap_set(DMA_MEMCPY, mask); - host->dma_chan = dma_request_channel(mask, 0, NULL); + host->dma_chan = dma_request_channel(mask, NULL, NULL); if (!host->dma_chan) { dev_err(host->dev, "Failed to request DMA channel\n"); use_dma = 0; @@ -655,27 +612,12 @@ static int __init atmel_nand_probe(struct platform_device *pdev) goto err_scan_tail; } -#ifdef CONFIG_MTD_CMDLINE_PARTS mtd->name = "atmel_nand"; - num_partitions = parse_mtd_partitions(mtd, part_probes, - &partitions, 0); -#endif - if (num_partitions <= 0 && host->board->partition_info) - partitions = host->board->partition_info(mtd->size, - &num_partitions); - - if ((!partitions) || (num_partitions == 0)) { - printk(KERN_ERR "atmel_nand: No partitions defined, or unsupported device.\n"); - res = -ENXIO; - goto err_no_partitions; - } - - res = mtd_device_register(mtd, partitions, num_partitions); + res = mtd_device_parse_register(mtd, NULL, 0, + host->board->parts, host->board->num_parts); if (!res) return res; -err_no_partitions: - nand_release(mtd); err_scan_tail: err_scan_ident: err_no_card: |