user/sven/linux.git/include/linux/mtd/nand.h, branch v3.16.5

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

mtd: nand: add the data structures for JEDEC parameter page

2014-03-11T05:42:26Z

Create the nand_jedec_params{} and jedec_ecc_info{} according to the JESD230A (Revision of JESD230, October 2012). Signed-off-by: Huang Shijie Signed-off-by: Brian Norris

mtd: nand: force NAND_CMD_READID onto 8-bit bus

2014-03-11T05:42:22Z

The NAND command helpers tend to automatically shift the column address for x16 bus devices, since most commands expect a word address, not a byte address. The Read ID command, however, expects an 8-bit address (i.e., 0x00, 0x20, or 0x40 should not be translated to 0x00, 0x10, or 0x20). This fixes the column address for a few drivers which imitate the nand_base defaults. Note that I don't touch sh_flctl.c, since it already handles this problem slightly differently (note its comment "READID is always performed using an 8-bit bus"). I have not tested this patch, as I only have x8 parts up for testing at this point. Hopefully that can change soon... Signed-off-by: Brian Norris Tested-by: Ezequiel Garcia Tested-By: Pekon Gupta

mtd: nand: remove the NAND_MAX_PAGESIZE/NAND_MAX_OOBSIZE

2014-03-11T05:42:22Z

There is no reference to these two macros now. Just remove them. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris