kernel/include/linux/mtd/spi-nor.h, branch linux-3.17.y

mtd: spi-nor: add support for flag status register on Micron chips

2014-07-12T02:10:35Z

Some new Micron flash chips require reading the flag status register to determine when operations have completed. Furthermore, chips with multi-die stacks of the 65nm 256Mb QSPI also require reading the status register before reading the flag status register. This patch adds support for the flag status register in the n25q512ax3 and n25q00 Micron QSPI flash chips. Signed-off-by: Graham Moore Signed-off-by: Brian Norris

mtd: spi-nor: unify read opcode variants with ST SPI FSM

2014-04-14T18:23:00Z

serial_flash_cmds.h defines our opcodes a little differently. Let's borrow its naming, since it's borrowed from the SFDP standard, and it's more extensible. This prepares us for merging serial_flash_cmds.h and spi-nor.h opcode listing. Signed-off-by: Brian Norris Reviewed-by: Marek Vasut Acked-by: Huang Shijie

mtd: spi-nor: re-name OPCODE_* to SPINOR_OP_*

2014-04-14T18:23:00Z

Qualify these with a better namespace, and prepare them for use in more drivers. Signed-off-by: Brian Norris Reviewed-by: Marek Vasut Acked-by: Huang Shijie

mtd: spi-nor: drop \t after #define

2014-04-14T18:23:00Z

Spacing is a little non-standard here. Fix up tabs vs. spaces. Signed-off-by: Brian Norris Acked-by: Huang Shijie Reviewed-by: Marek Vasut

mtd: spi-nor: add the copyright information

2014-04-14T18:23:00Z

Add the copyright information for spi-nor.c and spi-nor.h. Signed-off-by: Huang Shijie Signed-off-by: Brian Norris

mtd: spi-nor: add a helper to find the spi_device_id

2014-04-14T18:22:58Z

Add the spi_nor_match_id() to find the proper spi_device_id with the NOR flash's name in the spi_nor_ids table. Signed-off-by: Huang Shijie Acked-by: Marek Vasut Signed-off-by: Brian Norris

mtd: spi-nor: add the framework for SPI NOR

2014-04-14T18:22:58Z

This patch cloned most of the m25p80.c. In theory, it adds a new spi-nor layer. Before this patch, the layer is like: MTD ------------------------ m25p80 ------------------------ spi bus driver ------------------------ SPI NOR chip After this patch, the layer is like: MTD ------------------------ spi-nor ------------------------ m25p80 ------------------------ spi bus driver ------------------------ SPI NOR chip With the spi-nor controller driver(Freescale Quadspi), it looks like: MTD ------------------------ spi-nor ------------------------ fsl-quadspi ------------------------ SPI NOR chip New APIs: spi_nor_scan: used to scan a spi-nor flash. Signed-off-by: Huang Shijie Acked-by: Marek Vasut [Brian: rebased to include additional m25p_ids[] entry] Signed-off-by: Brian Norris

mtd: spi-nor: add the basic data structures

2014-04-14T18:22:58Z

The spi_nor{} is cloned from the m25p{}. The spi_nor{} can be used by both the m25p80 and spi-nor controller. We also add the spi_nor_xfer_cfg{} which can be used by the two fundamental primitives: read_xfer/write_xfer. 1) the hooks for spi_nor{}: @prepare/unpreare: used to do some work before or after the read/write/erase/lock/unlock. @read_xfer/write_xfer: We can use these two hooks to code all the following hooks if the driver tries to implement them by itself. @read_reg: used to read the registers, such as read status register, read configure register. @write_reg: used to write the registers, such as write enable, erase sector. @read_id: read out the ID info. @wait_till_ready: wait till the NOR becomes ready. @read: read out the data from the NOR. @write: write data to the NOR. @erase: erase a sector of the NOR. 2) Add a new field sst_write_second for the SST NOR write. Signed-off-by: Huang Shijie Acked-by: Marek Vasut Signed-off-by: Brian Norris

mtd: spi-nor: copy the SPI NOR commands to a new header file

2014-04-14T18:22:57Z

This patch adds a new header :spi-nor.h, and copies all the SPI NOR commands and relative macros into this new header. This hearder can be used by the m25p80.c and other spi-nor controller, such as Freescale's Quadspi. Signed-off-by: Huang Shijie Acked-by: Marek Vasut Signed-off-by: Brian Norris