user/sven/linux.git/include/linux/mtd/nand.h, branch v4.4.294

mtd: nand: Provide nand_cleanup() function to free NAND related resources

2020-10-14T07:46:22Z

[ Upstream commit d44154f969a44269a9288c274c1c2fd9e85df8a5 ] Provide a nand_cleanup() function to free all nand related resources without unregistering the mtd device. This should allow drivers to call mtd_device_unregister() and handle its return value and still being able to cleanup all nand related resources. Signed-off-by: Richard Weinberger Signed-off-by: Daniel Walter Signed-off-by: Boris Brezillon Signed-off-by: Sasha Levin

mtd: nand: fix ONFI parameter page layout

2020-05-10T08:25:59Z

commit de64aa9ec129ba627634088f662a4d09e356ddb6 upstream. src_ssync_features field is only 1 byte large, and the 4th reserved area is actually 8 bytes large. Fixes: d1e1f4e42b5 ("mtd: nand: add support for reading ONFI parameters from NAND device") Signed-off-by: Boris Brezillon Signed-off-by: Brian Norris Signed-off-by: Greg Kroah-Hartman

mtd: nand: pass page number to ecc->write_xxx() methods

2015-10-13T19:56:49Z

The ->read_xxx() methods are all passed the page number the NAND controller is supposed to read, but ->write_xxx() do not have such a parameter. This is a problem if we want to properly implement data scrambling/randomization in order to mitigate MLC sensibility to repeated pattern: to prevent bitflips in adjacent pages in the same block we need to avoid repeating the same pattern at the same offset in those pages, hence the randomizer/scrambler engine need to be passed the page value in order to adapt its seed accordingly. Moreover, adding the page parameter to the ->write_xxx() methods add some consistency to the current API. Signed-off-by: Boris Brezillon CC: Josh Wu CC: Ezequiel Garcia CC: Maxime Ripard CC: Greg Kroah-Hartman CC: Huang Shijie CC: Stefan Agner CC: devel@driverdev.osuosl.org CC: linux-arm-kernel@lists.infradead.org CC: linux-kernel@vger.kernel.org Signed-off-by: Brian Norris

mtd: nand: remove unused ->init_size() hook

2015-10-01T17:20:15Z

The ->init_size() hook was introduced to let NAND controller drivers support NAND devices that could not be described in the nand_ids table. Since then, the core has added support for extended-id parsing and full-id description, thus allowing to describe pretty much all existing NANDs. Moreover, this hook is not used by any mainline driver, and should not be used by new drivers, because detecting the NAND chip is not something controller specific. Signed-off-by: Boris Brezillon Signed-off-by: Brian Norris

mtd: nand: add nand_check_erased helper functions

2015-09-21T22:35:04Z

Add two helper functions to help NAND controller drivers test whether a specific NAND region is erased or not. Signed-off-by: Boris Brezillon Signed-off-by: Brian Norris

mtd: nand: Rename nand_chip .dn to .flash_node

2015-09-11T22:48:43Z

Use a more descriptive name for the device_node element in struct nand_chip . This name matches the element name used for device_node property of a flash in the spi-nor framework. Signed-off-by: Marek Vasut Signed-off-by: Brian Norris

mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict

2015-07-07T20:03:25Z

Commit 66507c7bc8895f0da6b ("mtd: nand: Add support to use nand_base poi databuf as bounce buffer") added a flag NAND_USE_BOUNCE_BUFFER using the same bit value as the existing NAND_BUSWIDTH_AUTO. Cc: Kamal Dasu Fixes: 66507c7bc8895f0da6b ("mtd: nand: Add support to use nand_base poi databuf as bounce buffer") Signed-off-by: Scott Wood Signed-off-by: Brian Norris

mtd: nand: add common DT init code

2015-05-11T23:22:29Z

These are already-documented common bindings for NAND chips. Let's handle them in nand_base. If NAND controller drivers need to act on this data before bringing up the NAND chip (e.g., fill out ECC callback functions, change HW modes, etc.), then they can do so between calling nand_scan_ident() and nand_scan_tail(). Signed-off-by: Brian Norris

mtd: nand_bbt: make nand_scan_bbt() static

2015-05-07T03:02:35Z

This implementation detail is no longer needed outside of nand_bbt.c. Signed-off-by: Brian Norris

mtd: nand: add ATO manufacturer info

2014-11-26T04:11:12Z

Tested with ATO AFND1G08U3, 128MiB NAND. Signed-off-by: Brian Norris