- 03 Jan, 2014 40 commits
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Ivan Khoronzhuk authored
When kernel is booted using DT, there is no guarantee that Davinci NAND device has been created already at the time when driver init function is executed. Therefore, platform_driver_probe() can't be used because this may result the Davinci NAND driver will never be probed. The driver probing has to be made with core mechanism. Acked-by:
Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by:
Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by:
Taras Kondratiuk <taras@ti.com> Signed-off-by:
Ivan Khoronzhuk <ivan.khoronzhuk@ti.com> Signed-off-by:
Brian Norris <computersforpeace@gmail.com>
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Wei Yongjun authored
Add missing platform_set_drvdata() in au1550nd_probe(), otherwise calling platform_get_drvdata() in remove returns NULL. Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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Wei Yongjun authored
clock source is prepared and enabled by clk_prepare_enable() in mxcnd_probe() function, but no disable/unprepare in mxcnd_remove(). Signed-off-by:
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Ezequiel Garcia authored
Since the of_mtd header provides dummy stubs for !CONFIG_OF, it's safe to remove the #ifdef CONFIG_OF. Build tested only. Signed-off-by:
Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by:
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Ezequiel Garcia authored
Add the pxa3xx-nand driver which supports PXA3xx and Armada 370/XP SoC family to MAINTAINERS to ensure I get proper Cc on patches. Signed-off-by:
Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by:
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Brian Norris authored
While we're at it, change the git URL to remove the version legacy. It's been a symlink to linux-mtd.git for a while now anyway. Signed-off-by:
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Jingoo Han authored
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by:
Jingoo Han <jg1.han@samsung.com> Signed-off-by:
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Laurent Pinchart authored
This simplifies error and cleanup code paths. Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Signed-off-by:
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by:
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Laurent Pinchart authored
Cast pointers to uintptr_t instead of unsigned int. This fixes warnings on platforms where pointers have a different size than int. Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Signed-off-by:
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Laurent Pinchart authored
This helps increasing build testing coverage. Cc: David Woodhouse <dwmw2@infradead.org> Cc: linux-mtd@lists.infradead.org Signed-off-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
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Axel Lin authored
register_mtd_parser never fails; hence make it return void. Signed-off-by:
Axel Lin <axel.lin@ingics.com> Signed-off-by:
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Axel Lin authored
deregister_mtd_parser never fails; hence make it return void. Signed-off-by:
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Zhouyi Zhou authored
NULL return of kmem_cache_zalloc should be handled in jffs2_alloc_xattr_datum and jff2_alloc_xattr_ref. Signed-off-by:
Zhouyi Zhou <yizhouzhou@ict.ac.cn> Signed-off-by:
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Ezequiel Garcia authored
Add a nice "nand:" prefix to all pr_xxx() messages. This allows to get rid of the "NAND" words in messages, given the context is already given by the prefix. Remove the __func__ report from messages where it's not needed and refactor the device detection messages to show itself in several lines. Signed-off-by:
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Fabio Estevam authored
Using the IS_ENABLED() macro can make the code shorter and simpler. Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
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Axel Lin authored
Use new ATTRIBUTE_GROUPS macro to declare attribute groups. Signed-off-by:
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Igor Grinberg authored
Add support for Micron m25px16 spi flash chip. Signed-off-by:
Igor Grinberg <grinberg@compulab.co.il> Signed-off-by:
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Fabio Estevam authored
clk_prepare_enable() may fail, so let's check its return value and propagate it in the case of error. Signed-off-by:
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Michael Grzeschik authored
The ecc_stats.corrected count variable will already be incremented in the above framework-layer just after this callback. Cc: stable@vger.kernel.org # 2.6.36+ Signed-off-by:
Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by:
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Philipp Rosenberger authored
It seems the include guard was copied from of_net.h. Signed-off-by:
Philipp Rosenberger <philipp.rosenberger@xse.de> Signed-off-by:
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Brian Norris authored
s/strenght/strength/ This field isn't used anywhere, so this rename is safe. Signed-off-by: -
Jingoo Han authored
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by:
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Wei Yongjun authored
The devm_request_irq function allocates irq that is released when a driver detaches. Thus, there is no reason to explicitly call devm_free_irq in probe or remove functions. Signed-off-by:
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Huang Shijie authored
change all the pr_debug to dev_dbg. Signed-off-by:
Huang Shijie <b32955@freescale.com> Signed-off-by:
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Huang Shijie authored
There are pr_err and dev_err in the gpmi driver now. It makes people confused. This patch changes all the pr_err to dev_err except the one in the gpmi_reset_block(). We also remove the unnecessary print for OOM message. Signed-off-by:
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Huang Shijie authored
The error messages for the failure of dmaengine_prep_slave_sg are not necessary, this patch removes all these pr_err, and returns with the proper error code -EINVAL, not -1. Signed-off-by:
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Alexander Shiyan authored
This patch adds request_mem_region() prior ioremap() for diskonchip driver. This will allow to check if memory region is occupied by any other device, for example in case if we have memory region for several optional devices and only one device can be used at once. Signed-off-by:
Alexander Shiyan <shc_work@mail.ru> Signed-off-by:
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Huang Shijie authored
Use devm_request_irq to simplify the code. Also remove the unused fields of structure resources{}. Signed-off-by: -
Huang Shijie authored
Use the devm_ioremap_resource to simplify the code. [Note: as a side effect, this adds a missing call to request_memory().] Signed-off-by:
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Huang Shijie authored
The gpmi_nfc_* is the legacy name. In order to avoid the confusion, The patch renames the gpmi_nfc_* functions to gpmi_nand_*. Signed-off-by:
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Huang Shijie authored
We do not use the chip->oob_poi in the mx23_write_transcription_stamp. So remove the unused line. Signed-off-by:
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Huang Shijie authored
We do not scan the BBT after we call the gpmi_pre_bbt_scan, so it has lost the meaning of existence. This patch merges this function into gpmi_init_last, and delete it. This patch does not change any logic. Signed-off-by:
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Huang Shijie authored
The local array feature[] is in the stack. We can see the warning when we enable the CONFIG_DMA_API_DEBUG: ---------------------------------------------------------- WARNING: at lib/dma-debug.c:950 check_for_stack+0xac/0xf8() gpmi-nand 112000.gpmi-nand: DMA-API: device driver maps memory fromstack [addr=dc05be34] Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.17-16851-g2414a73 #1324 [<80014cbc>] (unwind_backtrace+0x0/0x138) from [<8001251c>] (show_stack+0x10/0x14) [<8001251c>] (show_stack+0x10/0x14) from [<8002699c>] (warn_slowpath_common+0x4c/0x68) [<8002699c>] (warn_slowpath_common+0x4c/0x68) from [<80026a4c>] (warn_slowpath_fmt+0x30/0x40) [<80026a4c>] (warn_slowpath_fmt+0x30/0x40) from [<8028e2f8>] (check_for_stack+0xac/0xf8) [<8028e2f8>] (check_for_stack+0xac/0xf8) from [<8028e438>] (debug_dma_map_sg+0xf4/0x188) [<8028e438>] (debug_dma_map_sg+0xf4/0x188) from [<803968d0>] (prepare_data_dma+0xb8/0x1a8) [<803968d0>] (prepare_data_dma+0xb8/0x1a8) from [<80397b20>] (gpmi_send_data+0x84/0xfc) [<80397b20>] (gpmi_send_data+0x84/0xfc) from [<8038c2b4>] (nand_onfi_set_features+0x50/0x74) [<8038c2b4>] (nand_onfi_set_features+0x50/0x74) from [<80397198>] (gpmi_extra_init+0x90/0x170) [<80397198>] (gpmi_extra_init+0x90/0x170) from [<8039520c>] (gpmi_nand_probe+0x2f8/0xb3c) [<8039520c>] (gpmi_nand_probe+0x2f8/0xb3c) from [<8031b974>] (platform_drv_probe+0x18/0x1c) ---------------------------------------------------------- The patch uses the kzalloc to allocate the buffer, and free it when we do not use it anymore. Signed-off-by:
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Brian Norris authored
The Armada BCH configuration in this driver uses one of the two following ECC schemes: 16-bit correction per 2048 bytes 16-bit correction per 1024 bytes These are sufficient for mapping to the 4-bit per 512-bytes and 8-bit per 512-bytes (respectively) minimum correctability requirements of many common NAND. The current code only checks for the required strength (4-bit or 8-bit) without checking the ECC step size that is associated with that strength (and simply assumes it is 512). While that is often a safe assumption to make, let's make it explicit, since we have that information. Signed-off-by:
Daniel Mack <zonque@gmail.com>
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Ezequiel Garcia authored
This commit extends the ECC correctable error detection to include ECC BCH errors. The number of BCH correctable errors can be any up to 16, and the actual value is exposed in the NDSR register. Therefore, we change some symbol names to refer to correctable or uncorrectable (instead of single-bit or double-bit as it was in the Hamming case) and while at it, cleanup the detection code slightly. Signed-off-by:
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Ezequiel Garcia authored
This commit adds write support for large pages (4 KiB, 8 KiB). Such support is implemented by issuing a multiple command sequence, transfering a set of 2 KiB chunks per transaction. The splitted command sequence requires to send the SEQIN command independently of the PAGEPROG command and therefore it's set as an execution command. Since PAGEPROG enables ECC, each 2 KiB chunk of data is written together with ECC code at a controller-fixed location within the flash page. Currently, only devices with a 4 KiB page size has been tested. Signed-off-by:
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Ezequiel Garcia authored
As preparation work to fully support large pages, this commit adds the initial infrastructure to support splitted (aka chunked) I/O operation. This commit adds support for read, and follow-up patches will add write support. When a read (aka READ0) command is issued, the driver loops issuing the same command until all the requested data is transfered, changing the 'extended' command field as needed. For instance, if the driver is required to read a 4 KiB page, using a chunk size of 2 KiB, the transaction is splitted in: 1. Monolithic read, first 2 KiB page chunk is read 2. Last naked read, second and last 2KiB page chunk is read If ECC is enabled it is calculated on each chunk transfered and added at a controller-fixed location after the data chunk that must be spare area. Signed-off-by:
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Ezequiel Garcia authored
In preparation to support multiple (aka chunked, aka splitted) page I/O, this commit adds 'data_buff_pos' and 'oob_buff_pos' fields to keep track of where the next read (or write) should be done. This will allow multiple calls to handle_data_pio() to continue the read (or write) operation. Signed-off-by:
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Ezequiel Garcia authored
This commit adds support page programming with a non-zero "column" address setting. This is important to support OOB writing, through command sequences such as: cmdfunc(mtd, NAND_CMD_SEQIN, mtd->writesize, ofs); write_buf(mtd, oob_buf, 6); cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); Signed-off-by:
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Ezequiel Garcia authored
To allow future support of multiple page reading/writing, move the data buffer clean out of prepare_set_command(). This is done to prevent the data buffer from being cleaned on every command preparation, when a multiple command sequence is implemented to read/write pages larger than the FIFO size (2 KiB). Signed-off-by:
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