user/sven/linux.git/include/linux/mtd/nand.h, branch v3.16.67

mtd: nand: remove unused and buggy get_platform_nandchip() helper function

2016-02-02T19:35:00Z

commit 8142b47ef33c655a34e08efd46b65732fe190675 upstream. Nobody uses the get_platform_nandchip() helper function which is supposed to return a pointer to a platform_nand_chip struct from an mtd_info pointer. Moreover, this function is buggy since the introduction of the plat_nand layer (chip->priv is now storing a pointer to an intermediate plat_nand_data structure allocated in plat_nand_probe(), and we have no way to retrieve a pointer to the provided platform_nand_chip struct from this plat_nand_data pointer). While we are at it, remove the useless (and buggy, since it's pointing to something stored on the stack) data->chip.priv assignment. Signed-off-by: Boris Brezillon Fixes: 711fdf627ce1 ("[MTD] [NAND] platform NAND driver: add driver") Cc: Vitaly Wool Signed-off-by: Brian Norris [ luis: backported to 3.16: adjusted context ] Signed-off-by: Luis Henriques

mtd: nand: fix ONFI parameter page layout

2016-02-02T19:28:22Z

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: Luis Henriques

mtd: nand: Fix NAND_USE_BOUNCE_BUFFER flag conflict

2015-08-11T08:57:46Z

commit 5f867db63473f32cce1b868e281ebd42a41f8fad upstream. 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 Signed-off-by: Luis Henriques

mtd: nand: Add support to use nand_base poi databuf as bounce buffer

2014-05-20T23:35:32Z

nand_base can be passed a kmap()'d buffers from highmem by filesystems like jffs2. This results in failure to map the physical address of the DMA buffer on various contoller driver on different platforms. This change adds a chip option to use preallocated databuf as bounce buffers used in nand_do_read_ops() and nand_do_write_ops(). This allows for specific nand controller driver to set this option as needed. Signed-off-by: Kamal Dasu Signed-off-by: Brian Norris

mtd: nand: refactor erase_cmd() to return chip status

2014-05-09T20:19:42Z

The nand_chip::erase_cmd callback previously served a dual purpose; for one, it allowed a per-flash-chip override, so that AG-AND devices could use a different erase command than other NAND. These AND devices were dropped in commit 14c6578683367b1e7af0c3c09e872b45a45183a7 (mtd: nand: remove AG-AND support). On the other hand, some drivers (denali and doc-g4) need to use this sort of callback to implement controller-specific erase operations. To make the latter operation easier for some drivers (e.g., ST's new BCH NAND driver), it helps if the command dispatch and wait functions can be lumped together, rather than called separately. This patch does two things: 1. Pull the call to chip->waitfunc() into chip->erase_cmd(), and return the status from this callback 2. Rename erase_cmd() to just erase(), since this callback does a little more than just send a command Signed-off-by: Brian Norris Tested-by: Lee Jones

mtd: nand: fix GET/SET_FEATURES address on 16-bit devices

2014-03-26T06:31:26Z

GET_FEATURES and SET_FEATURES also need byte-addressing on 16-bit devices. Signed-off-by: David Mosberger Signed-off-by: Brian Norris

mtd: nand: add "page" argument for read_subpage hook

2014-03-11T05:42:30Z

Add the "page" argument for the read_subpage hook. With this argument, the implementation of this hook could prints out more accurate information for debugging. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris

mtd: nand: parse out the JEDEC compliant NAND

2014-03-11T05:42:27Z

This patch adds the parsing code for the JEDEC compliant NAND. Since we need the 0x40 as the column address, this patch also makes the NAND_CMD_PARAM to use the 8-bit address only. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris

mtd: nand: add a helper to get the supported features for JEDEC

2014-03-11T05:42:26Z

Add a helper to get the supported features for JEDEC compliant NAND. Also add a macro JEDEC_FEATURE_16_BIT_BUS. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris

mtd: nand: add fields for JEDEC in nand_chip

2014-03-11T05:42:26Z

Add the jedec_version field, and add an anonymous union which contains the nand_onfi_params and nand_jedec_params. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris