diff options
Diffstat (limited to 'drivers')
60 files changed, 6155 insertions, 1855 deletions
diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index a385a35c7de9..90a66b3f7ae1 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -32,7 +32,6 @@ #include <linux/pm_runtime.h> #include <linux/platform_data/mtd-nand-omap2.h> -#include <linux/platform_data/mtd-onenand-omap2.h> #include <asm/mach-types.h> @@ -1138,6 +1137,112 @@ struct gpmc_nand_ops *gpmc_omap_get_nand_ops(struct gpmc_nand_regs *reg, int cs) } EXPORT_SYMBOL_GPL(gpmc_omap_get_nand_ops); +static void gpmc_omap_onenand_calc_sync_timings(struct gpmc_timings *t, + struct gpmc_settings *s, + int freq, int latency) +{ + struct gpmc_device_timings dev_t; + const int t_cer = 15; + const int t_avdp = 12; + const int t_cez = 20; /* max of t_cez, t_oez */ + const int t_wpl = 40; + const int t_wph = 30; + int min_gpmc_clk_period, t_ces, t_avds, t_avdh, t_ach, t_aavdh, t_rdyo; + + switch (freq) { + case 104: + min_gpmc_clk_period = 9600; /* 104 MHz */ + t_ces = 3; + t_avds = 4; + t_avdh = 2; + t_ach = 3; + t_aavdh = 6; + t_rdyo = 6; + break; + case 83: + min_gpmc_clk_period = 12000; /* 83 MHz */ + t_ces = 5; + t_avds = 4; + t_avdh = 2; + t_ach = 6; + t_aavdh = 6; + t_rdyo = 9; + break; + case 66: + min_gpmc_clk_period = 15000; /* 66 MHz */ + t_ces = 6; + t_avds = 5; + t_avdh = 2; + t_ach = 6; + t_aavdh = 6; + t_rdyo = 11; + break; + default: + min_gpmc_clk_period = 18500; /* 54 MHz */ + t_ces = 7; + t_avds = 7; + t_avdh = 7; + t_ach = 9; + t_aavdh = 7; + t_rdyo = 15; + break; + } + + /* Set synchronous read timings */ + memset(&dev_t, 0, sizeof(dev_t)); + + if (!s->sync_write) { + dev_t.t_avdp_w = max(t_avdp, t_cer) * 1000; + dev_t.t_wpl = t_wpl * 1000; + dev_t.t_wph = t_wph * 1000; + dev_t.t_aavdh = t_aavdh * 1000; + } + dev_t.ce_xdelay = true; + dev_t.avd_xdelay = true; + dev_t.oe_xdelay = true; + dev_t.we_xdelay = true; + dev_t.clk = min_gpmc_clk_period; + dev_t.t_bacc = dev_t.clk; + dev_t.t_ces = t_ces * 1000; + dev_t.t_avds = t_avds * 1000; + dev_t.t_avdh = t_avdh * 1000; + dev_t.t_ach = t_ach * 1000; + dev_t.cyc_iaa = (latency + 1); + dev_t.t_cez_r = t_cez * 1000; + dev_t.t_cez_w = dev_t.t_cez_r; + dev_t.cyc_aavdh_oe = 1; + dev_t.t_rdyo = t_rdyo * 1000 + min_gpmc_clk_period; + + gpmc_calc_timings(t, s, &dev_t); +} + +int gpmc_omap_onenand_set_timings(struct device *dev, int cs, int freq, + int latency, + struct gpmc_onenand_info *info) +{ + int ret; + struct gpmc_timings gpmc_t; + struct gpmc_settings gpmc_s; + + gpmc_read_settings_dt(dev->of_node, &gpmc_s); + + info->sync_read = gpmc_s.sync_read; + info->sync_write = gpmc_s.sync_write; + info->burst_len = gpmc_s.burst_len; + + if (!gpmc_s.sync_read && !gpmc_s.sync_write) + return 0; + + gpmc_omap_onenand_calc_sync_timings(&gpmc_t, &gpmc_s, freq, latency); + + ret = gpmc_cs_program_settings(cs, &gpmc_s); + if (ret < 0) + return ret; + + return gpmc_cs_set_timings(cs, &gpmc_t, &gpmc_s); +} +EXPORT_SYMBOL_GPL(gpmc_omap_onenand_set_timings); + int gpmc_get_client_irq(unsigned irq_config) { if (!gpmc_irq_domain) { @@ -1916,41 +2021,6 @@ static void __maybe_unused gpmc_read_timings_dt(struct device_node *np, of_property_read_bool(np, "gpmc,time-para-granularity"); } -#if IS_ENABLED(CONFIG_MTD_ONENAND) -static int gpmc_probe_onenand_child(struct platform_device *pdev, - struct device_node *child) -{ - u32 val; - struct omap_onenand_platform_data *gpmc_onenand_data; - - if (of_property_read_u32(child, "reg", &val) < 0) { - dev_err(&pdev->dev, "%pOF has no 'reg' property\n", - child); - return -ENODEV; - } - - gpmc_onenand_data = devm_kzalloc(&pdev->dev, sizeof(*gpmc_onenand_data), - GFP_KERNEL); - if (!gpmc_onenand_data) - return -ENOMEM; - - gpmc_onenand_data->cs = val; - gpmc_onenand_data->of_node = child; - gpmc_onenand_data->dma_channel = -1; - - if (!of_property_read_u32(child, "dma-channel", &val)) - gpmc_onenand_data->dma_channel = val; - - return gpmc_onenand_init(gpmc_onenand_data); -} -#else -static int gpmc_probe_onenand_child(struct platform_device *pdev, - struct device_node *child) -{ - return 0; -} -#endif - /** * gpmc_probe_generic_child - configures the gpmc for a child device * @pdev: pointer to gpmc platform device @@ -2053,6 +2123,16 @@ static int gpmc_probe_generic_child(struct platform_device *pdev, } } + if (of_node_cmp(child->name, "onenand") == 0) { + /* Warn about older DT blobs with no compatible property */ + if (!of_property_read_bool(child, "compatible")) { + dev_warn(&pdev->dev, + "Incompatible OneNAND node: missing compatible"); + ret = -EINVAL; + goto err; + } + } + if (of_device_is_compatible(child, "ti,omap2-nand")) { /* NAND specific setup */ val = 8; @@ -2077,8 +2157,9 @@ static int gpmc_probe_generic_child(struct platform_device *pdev, } else { ret = of_property_read_u32(child, "bank-width", &gpmc_s.device_width); - if (ret < 0) { - dev_err(&pdev->dev, "%pOF has no 'bank-width' property\n", + if (ret < 0 && !gpmc_s.device_width) { + dev_err(&pdev->dev, + "%pOF has no 'gpmc,device-width' property\n", child); goto err; } @@ -2188,11 +2269,7 @@ static void gpmc_probe_dt_children(struct platform_device *pdev) if (!child->name) continue; - if (of_node_cmp(child->name, "onenand") == 0) - ret = gpmc_probe_onenand_child(pdev, child); - else - ret = gpmc_probe_generic_child(pdev, child); - + ret = gpmc_probe_generic_child(pdev, child); if (ret) { dev_err(&pdev->dev, "failed to probe DT child '%s': %d\n", child->name, ret); diff --git a/drivers/mtd/devices/docg3.c b/drivers/mtd/devices/docg3.c index 0806f72102c0..a85af236b44d 100644 --- a/drivers/mtd/devices/docg3.c +++ b/drivers/mtd/devices/docg3.c @@ -904,9 +904,6 @@ static int doc_read_oob(struct mtd_info *mtd, loff_t from, if (ooblen % DOC_LAYOUT_OOB_SIZE) return -EINVAL; - if (from + len > mtd->size) - return -EINVAL; - ops->oobretlen = 0; ops->retlen = 0; ret = 0; @@ -990,36 +987,6 @@ err_in_read: goto out; } -/** - * doc_read - Read bytes from flash - * @mtd: the device - * @from: the offset from first block and first page, in bytes, aligned on page - * size - * @len: the number of bytes to read (must be a multiple of 4) - * @retlen: the number of bytes actually read - * @buf: the filled in buffer - * - * Reads flash memory pages. This function does not read the OOB chunk, but only - * the page data. - * - * Returns 0 if read successful, of -EIO, -EINVAL if an error occurred - */ -static int doc_read(struct mtd_info *mtd, loff_t from, size_t len, - size_t *retlen, u_char *buf) -{ - struct mtd_oob_ops ops; - size_t ret; - - memset(&ops, 0, sizeof(ops)); - ops.datbuf = buf; - ops.len = len; - ops.mode = MTD_OPS_AUTO_OOB; - - ret = doc_read_oob(mtd, from, &ops); - *retlen = ops.retlen; - return ret; -} - static int doc_reload_bbt(struct docg3 *docg3) { int block = DOC_LAYOUT_BLOCK_BBT; @@ -1471,8 +1438,6 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, if (len && ooblen && (len / DOC_LAYOUT_PAGE_SIZE) != (ooblen / oobdelta)) return -EINVAL; - if (ofs + len > mtd->size) - return -EINVAL; ops->oobretlen = 0; ops->retlen = 0; @@ -1513,39 +1478,6 @@ static int doc_write_oob(struct mtd_info *mtd, loff_t ofs, return ret; } -/** - * doc_write - Write a buffer to the chip - * @mtd: the device - * @to: the offset from first block and first page, in bytes, aligned on page - * size - * @len: the number of bytes to write (must be a full page size, ie. 512) - * @retlen: the number of bytes actually written (0 or 512) - * @buf: the buffer to get bytes from - * - * Writes data to the chip. - * - * Returns 0 if write successful, -EIO if write error - */ -static int doc_write(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, const u_char *buf) -{ - struct docg3 *docg3 = mtd->priv; - int ret; - struct mtd_oob_ops ops; - - doc_dbg("doc_write(to=%lld, len=%zu)\n", to, len); - ops.datbuf = (char *)buf; - ops.len = len; - ops.mode = MTD_OPS_PLACE_OOB; - ops.oobbuf = NULL; - ops.ooblen = 0; - ops.ooboffs = 0; - - ret = doc_write_oob(mtd, to, &ops); - *retlen = ops.retlen; - return ret; -} - static struct docg3 *sysfs_dev2docg3(struct device *dev, struct device_attribute *attr) { @@ -1866,8 +1798,6 @@ static int __init doc_set_driver_info(int chip_id, struct mtd_info *mtd) mtd->writebufsize = mtd->writesize = DOC_LAYOUT_PAGE_SIZE; mtd->oobsize = DOC_LAYOUT_OOB_SIZE; mtd->_erase = doc_erase; - mtd->_read = doc_read; - mtd->_write = doc_write; mtd->_read_oob = doc_read_oob; mtd->_write_oob = doc_write_oob; mtd->_block_isbad = doc_block_isbad; diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index dbe6a1de2bb8..a4e18f6aaa33 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -307,10 +307,18 @@ static int m25p_remove(struct spi_device *spi) { struct m25p *flash = spi_get_drvdata(spi); + spi_nor_restore(&flash->spi_nor); + /* Clean up MTD stuff. */ return mtd_device_unregister(&flash->spi_nor.mtd); } +static void m25p_shutdown(struct spi_device *spi) +{ + struct m25p *flash = spi_get_drvdata(spi); + + spi_nor_restore(&flash->spi_nor); +} /* * Do NOT add to this array without reading the following: * @@ -386,6 +394,7 @@ static struct spi_driver m25p80_driver = { .id_table = m25p_ids, .probe = m25p_probe, .remove = m25p_remove, + .shutdown = m25p_shutdown, /* REVISIT: many of these chips have deep power-down modes, which * should clearly be entered on suspend() to minimize power use. diff --git a/drivers/mtd/devices/mchp23k256.c b/drivers/mtd/devices/mchp23k256.c index 8956b7dcc984..75f71d166fd6 100644 --- a/drivers/mtd/devices/mchp23k256.c +++ b/drivers/mtd/devices/mchp23k256.c @@ -68,6 +68,7 @@ static int mchp23k256_write(struct mtd_info *mtd, loff_t to, size_t len, struct spi_transfer transfer[2] = {}; struct spi_message message; unsigned char command[MAX_CMD_SIZE]; + int ret; spi_message_init(&message); @@ -84,12 +85,16 @@ static int mchp23k256_write(struct mtd_info *mtd, loff_t to, size_t len, mutex_lock(&flash->lock); - spi_sync(flash->spi, &message); + ret = spi_sync(flash->spi, &message); + + mutex_unlock(&flash->lock); + + if (ret) + return ret; if (retlen && message.actual_length > sizeof(command)) *retlen += message.actual_length - sizeof(command); - mutex_unlock(&flash->lock); return 0; } @@ -100,6 +105,7 @@ static int mchp23k256_read(struct mtd_info *mtd, loff_t from, size_t len, struct spi_transfer transfer[2] = {}; struct spi_message message; unsigned char command[MAX_CMD_SIZE]; + int ret; spi_message_init(&message); @@ -117,12 +123,16 @@ static int mchp23k256_read(struct mtd_info *mtd, loff_t from, size_t len, mutex_lock(&flash->lock); - spi_sync(flash->spi, &message); + ret = spi_sync(flash->spi, &message); + + mutex_unlock(&flash->lock); + + if (ret) + return ret; if (retlen && message.actual_length > sizeof(command)) *retlen += message.actual_length - sizeof(command); - mutex_unlock(&flash->lock); return 0; } diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 73b605577447..28553c840d32 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -503,6 +503,11 @@ int add_mtd_device(struct mtd_info *mtd) return -EEXIST; BUG_ON(mtd->writesize == 0); + + if (WARN_ON((!mtd->erasesize || !mtd->_erase) && + !(mtd->flags & MTD_NO_ERASE))) + return -EINVAL; + mutex_lock(&mtd_table_mutex); i = idr_alloc(&mtd_idr, mtd, 0, 0, GFP_KERNEL); @@ -1053,7 +1058,20 @@ int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, * representing the maximum number of bitflips that were corrected on * any one ecc region (if applicable; zero otherwise). */ - ret_code = mtd->_read(mtd, from, len, retlen, buf); + if (mtd->_read) { + ret_code = mtd->_read(mtd, from, len, retlen, buf); + } else if (mtd->_read_oob) { + struct mtd_oob_ops ops = { + .len = len, + .datbuf = buf, + }; + + ret_code = mtd->_read_oob(mtd, from, &ops); + *retlen = ops.retlen; + } else { + return -ENOTSUPP; + } + if (unlikely(ret_code < 0)) return ret_code; if (mtd->ecc_strength == 0) @@ -1068,11 +1086,25 @@ int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, *retlen = 0; if (to < 0 || to >= mtd->size || len > mtd->size - to) return -EINVAL; - if (!mtd->_write || !(mtd->flags & MTD_WRITEABLE)) + if ((!mtd->_write && !mtd->_write_oob) || + !(mtd->flags & MTD_WRITEABLE)) return -EROFS; if (!len) return 0; ledtrig_mtd_activity(); + + if (!mtd->_write) { + struct mtd_oob_ops ops = { + .len = len, + .datbuf = (u8 *)buf, + }; + int ret; + + ret = mtd->_write_oob(mtd, to, &ops); + *retlen = ops.retlen; + return ret; + } + return mtd->_write(mtd, to, len, retlen, buf); } EXPORT_SYMBOL_GPL(mtd_write); diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index be088bccd593..76cd21d1171b 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -105,34 +105,17 @@ static int part_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops) { struct mtd_part *part = mtd_to_part(mtd); + struct mtd_ecc_stats stats; int res; - if (from >= mtd->size) - return -EINVAL; - if (ops->datbuf && from + ops->len > mtd->size) - return -EINVAL; - - /* - * If OOB is also requested, make sure that we do not read past the end - * of this partition. - */ - if (ops->oobbuf) { - size_t len, pages; - - len = mtd_oobavail(mtd, ops); - pages = mtd_div_by_ws(mtd->size, mtd); - pages -= mtd_div_by_ws(from, mtd); - if (ops->ooboffs + ops->ooblen > pages * len) - return -EINVAL; - } - + stats = part->parent->ecc_stats; res = part->parent->_read_oob(part->parent, from + part->offset, ops); - if (unlikely(res)) { - if (mtd_is_bitflip(res)) - mtd->ecc_stats.corrected++; - if (mtd_is_eccerr(res)) - mtd->ecc_stats.failed++; - } + if (unlikely(mtd_is_eccerr(res))) + mtd->ecc_stats.failed += + part->parent->ecc_stats.failed - stats.failed; + else + mtd->ecc_stats.corrected += + part->parent->ecc_stats.corrected - stats.corrected; return res; } @@ -189,10 +172,6 @@ static int part_write_oob(struct mtd_info *mtd, loff_t to, { struct mtd_part *part = mtd_to_part(mtd); - if (to >= mtd->size) - return -EINVAL; - if (ops->datbuf && to + ops->len > mtd->size) - return -EINVAL; return part->parent->_write_oob(part->parent, to + part->offset, ops); } @@ -435,8 +414,10 @@ static struct mtd_part *allocate_partition(struct mtd_info *parent, parent->dev.parent; slave->mtd.dev.of_node = part->of_node; - slave->mtd._read = part_read; - slave->mtd._write = part_write; + if (parent->_read) + slave->mtd._read = part_read; + if (parent->_write) + slave->mtd._write = part_write; if (parent->_panic_write) slave->mtd._panic_write = part_panic_write; diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index f07492c6f4b2..7eb0e1f4f980 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -1223,8 +1223,9 @@ static int mtdswap_show(struct seq_file *s, void *data) unsigned int max[MTDSWAP_TREE_CNT]; unsigned int i, cw = 0, cwp = 0, cwecount = 0, bb_cnt, mapped, pages; uint64_t use_size; - char *name[] = {"clean", "used", "low", "high", "dirty", "bitflip", - "failing"}; + static const char * const name[] = { + "clean", "used", "low", "high", "dirty", "bitflip", "failing" + }; mutex_lock(&d->mbd_dev->lock); diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index bb48aafed9a2..e6b8c59f2c0d 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -315,6 +315,7 @@ config MTD_NAND_ATMEL config MTD_NAND_PXA3xx tristate "NAND support on PXA3xx and Armada 370/XP" + depends on !MTD_NAND_MARVELL depends on PXA3xx || ARCH_MMP || PLAT_ORION || ARCH_MVEBU help @@ -323,6 +324,18 @@ config MTD_NAND_PXA3xx platforms (XP, 370, 375, 38x, 39x) and 64-bit Armada platforms (7K, 8K) (NFCv2). +config MTD_NAND_MARVELL + tristate "NAND controller support on Marvell boards" + depends on PXA3xx || ARCH_MMP || PLAT_ORION || ARCH_MVEBU || \ + COMPILE_TEST + depends on HAS_IOMEM + help + This enables the NAND flash controller driver for Marvell boards, + including: + - PXA3xx processors (NFCv1) + - 32-bit Armada platforms (XP, 37x, 38x, 39x) (NFCv2) + - 64-bit Aramda platforms (7k, 8k) (NFCv2) + config MTD_NAND_SLC_LPC32XX tristate "NXP LPC32xx SLC Controller" depends on ARCH_LPC32XX @@ -376,9 +389,7 @@ config MTD_NAND_GPMI_NAND Enables NAND Flash support for IMX23, IMX28 or IMX6. The GPMI controller is very powerful, with the help of BCH module, it can do the hardware ECC. The GPMI supports several - NAND flashs at the same time. The GPMI may conflicts with other - block, such as SD card. So pay attention to it when you enable - the GPMI. + NAND flashs at the same time. config MTD_NAND_BRCMNAND tristate "Broadcom STB NAND controller" diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index 118a1349aad3..921634ba400c 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_MTD_NAND_OMAP2) += omap2_nand.o obj-$(CONFIG_MTD_NAND_OMAP_BCH_BUILD) += omap_elm.o obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o +obj-$(CONFIG_MTD_NAND_MARVELL) += marvell_nand.o obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o diff --git a/drivers/mtd/nand/atmel/nand-controller.c b/drivers/mtd/nand/atmel/nand-controller.c index 90a71a56bc23..b2f00b398490 100644 --- a/drivers/mtd/nand/atmel/nand-controller.c +++ b/drivers/mtd/nand/atmel/nand-controller.c @@ -841,6 +841,8 @@ static int atmel_nand_pmecc_write_pg(struct nand_chip *chip, const u8 *buf, struct atmel_nand *nand = to_atmel_nand(chip); int ret; + nand_prog_page_begin_op(chip, page, 0, NULL, 0); + ret = atmel_nand_pmecc_enable(chip, NAND_ECC_WRITE, raw); if (ret) return ret; @@ -857,7 +859,7 @@ static int atmel_nand_pmecc_write_pg(struct nand_chip *chip, const u8 *buf, atmel_nand_write_buf(mtd, chip->oob_poi, mtd->oobsize); - return 0; + return nand_prog_page_end_op(chip); |