diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-17 17:59:26 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-17 17:59:26 (GMT) |
commit | d6666be6f0c43efb9475d1d35fbef9f8be61b7b1 (patch) | |
tree | f544aec1dfdffa0c6b6d381f8e6710cad7e16074 /drivers/mtd/nand/omap2.c | |
parent | 0ea90b9e79cff66934119e6dd8fa8e9d0f7d005a (diff) | |
parent | 68f29815034e9dc9ed53cad85946c32b07adc8cc (diff) | |
download | linux-d6666be6f0c43efb9475d1d35fbef9f8be61b7b1.tar.xz |
Merge tag 'for-linus-20141215' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
"Summary:
- Add device tree support for DoC3
- SPI NOR:
Refactoring, for better layering between spi-nor.c and its
driver users (e.g., m25p80.c)
New flash device support
Support 6-byte ID strings
- NAND:
New NAND driver for Allwinner SoC's (sunxi)
GPMI NAND: add support for raw (no ECC) access, for testing
purposes
Add ATO manufacturer ID
A few odd driver fixes
- MTD tests:
Allow testers to compensate for OOB bitflips in oobtest
Fix a torturetest regression
- nandsim: Support longer ID byte strings
And more"
* tag 'for-linus-20141215' of git://git.infradead.org/linux-mtd: (63 commits)
mtd: tests: abort torturetest on erase errors
mtd: physmap_of: fix potential NULL dereference
mtd: spi-nor: allow NULL as chip name and try to auto detect it
mtd: nand: gpmi: add raw oob access functions
mtd: nand: gpmi: add proper raw access support
mtd: nand: gpmi: add gpmi_copy_bits function
mtd: spi-nor: factor out write_enable() for erase commands
mtd: spi-nor: add support for s25fl128s
mtd: spi-nor: remove the jedec_id/ext_id
mtd: spi-nor: add id/id_len for flash_info{}
mtd: nand: correct the comment of function nand_block_isreserved()
jffs2: Drop bogus if in comment
mtd: atmel_nand: replace memcpy32_toio/memcpy32_fromio with memcpy
mtd: cafe_nand: drop duplicate .write_page implementation
mtd: m25p80: Add support for serial flash Spansion S25FL132K
MTD: m25p80: fix inconsistency in m25p_ids compared to spi_nor_ids
mtd: spi-nor: improve wait-till-ready timeout loop
mtd: delete unnecessary checks before two function calls
mtd: nand: omap: Fix NAND enumeration on 3430 LDP
mtd: nand: add ATO manufacturer info
...
Diffstat (limited to 'drivers/mtd/nand/omap2.c')
-rw-r--r-- | drivers/mtd/nand/omap2.c | 24 |
1 files changed, 9 insertions, 15 deletions
diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 6d74b56..63f858e 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -144,11 +144,13 @@ static u_char bch8_vector[] = {0xf3, 0xdb, 0x14, 0x16, 0x8b, 0xd2, 0xbe, 0xcc, 0xac, 0x6b, 0xff, 0x99, 0x7b}; static u_char bch4_vector[] = {0x00, 0x6b, 0x31, 0xdd, 0x41, 0xbc, 0x10}; -/* oob info generated runtime depending on ecc algorithm and layout selected */ -static struct nand_ecclayout omap_oobinfo; +/* Shared among all NAND instances to synchronize access to the ECC Engine */ +static struct nand_hw_control omap_gpmc_controller = { + .lock = __SPIN_LOCK_UNLOCKED(omap_gpmc_controller.lock), + .wq = __WAIT_QUEUE_HEAD_INITIALIZER(omap_gpmc_controller.wq), +}; struct omap_nand_info { - struct nand_hw_control controller; struct omap_nand_platform_data *pdata; struct mtd_info mtd; struct nand_chip nand; @@ -168,6 +170,8 @@ struct omap_nand_info { u_char *buf; int buf_len; struct gpmc_nand_regs reg; + /* generated at runtime depending on ECC algorithm and layout selected */ + struct nand_ecclayout oobinfo; /* fields specific for BCHx_HW ECC scheme */ struct device *elm_dev; struct device_node *of_node; @@ -1686,9 +1690,6 @@ static int omap_nand_probe(struct platform_device *pdev) platform_set_drvdata(pdev, info); - spin_lock_init(&info->controller.lock); - init_waitqueue_head(&info->controller.wq); - info->pdev = pdev; info->gpmc_cs = pdata->cs; info->reg = pdata->reg; @@ -1708,7 +1709,7 @@ static int omap_nand_probe(struct platform_device *pdev) info->phys_base = res->start; - nand_chip->controller = &info->controller; + nand_chip->controller = &omap_gpmc_controller; nand_chip->IO_ADDR_W = nand_chip->IO_ADDR_R; nand_chip->cmd_ctrl = omap_hwcontrol; @@ -1741,13 +1742,6 @@ static int omap_nand_probe(struct platform_device *pdev) goto return_error; } - /* check for small page devices */ - if ((mtd->oobsize < 64) && (pdata->ecc_opt != OMAP_ECC_HAM1_CODE_HW)) { - dev_err(&info->pdev->dev, "small page devices are not supported\n"); - err = -EINVAL; - goto return_error; - } - /* re-populate low-level callbacks based on xfer modes */ switch (pdata->xfer_type) { case NAND_OMAP_PREFETCH_POLLED: @@ -1840,7 +1834,7 @@ static int omap_nand_probe(struct platform_device *pdev) } /* populate MTD interface based on ECC scheme */ - ecclayout = &omap_oobinfo; + ecclayout = &info->oobinfo; switch (info->ecc_opt) { case OMAP_ECC_HAM1_CODE_SW: nand_chip->ecc.mode = NAND_ECC_SOFT; |