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author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-10-19 09:20:09 +0200 |
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committer | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-10-19 09:20:09 +0200 |
commit | 042c1a5a6021f73c10dc84958c287eb2a2a26f7c (patch) | |
tree | 8ff3f0812c1a88392233d8633e541088ecd78b9f /include/linux/mtd/platnand.h | |
parent | Merge tag 'spi-nor/for-4.20' of git://git.infradead.org/linux-mtd into mtd/next (diff) | |
parent | mtd: rawnand: marvell: fix the IRQ handler complete() condition (diff) | |
download | linux-dev-042c1a5a6021f73c10dc84958c287eb2a2a26f7c.tar.xz linux-dev-042c1a5a6021f73c10dc84958c287eb2a2a26f7c.zip |
Merge tag 'nand/for-4.20' of git://git.infradead.org/linux-mtd into mtd/next
NAND core changes:
- Two batchs of cleanups of the NAND API, including:
* Deprecating a lot of interfaces (now replaced by ->exec_op()).
* Moving code in separate drivers (JEDEC, ONFI), in private files
(internals), in platform drivers, etc.
* Functions/structures reordering.
* Exclusive use of the nand_chip structure instead of the MTD one
all across the subsystem.
- Addition of the nand_wait_readrdy/rdy_op() helpers.
Raw NAND controllers drivers changes:
- Various coccinelle patches.
- Marvell:
* Use regmap_update_bits() for syscon access.
* More documentation.
* BCH failure path rework.
* More layouts to be supported.
* IRQ handler complete() condition fixed.
- Fsl_ifc:
* SRAM initialization fixed for newer controller versions.
- Denali:
* Fix licenses mismatch and use a SPDX tag.
* Set SPARE_AREA_SKIP_BYTES register to 8 if unset.
- Qualcomm:
* Do not include dma-direct.h.
- Docg4:
* Removed.
- Ams-delta:
* Use of a GPIO lookup table
* Internal machinery changes.
Raw NAND chip drivers changes:
- Toshiba:
* Add support for Toshiba memory BENAND
* Pass a single nand_chip object to the status helper.
- ESMT:
* New driver to retrieve the ECC requirements from the 5th ID byte.
Diffstat (limited to 'include/linux/mtd/platnand.h')
-rw-r--r-- | include/linux/mtd/platnand.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/include/linux/mtd/platnand.h b/include/linux/mtd/platnand.h new file mode 100644 index 000000000000..bc11eb6b593b --- /dev/null +++ b/include/linux/mtd/platnand.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org> + * Steven J. Hill <sjhill@realitydiluted.com> + * Thomas Gleixner <tglx@linutronix.de> + * + * Contains all platform NAND related definitions. + */ + +#ifndef __LINUX_MTD_PLATNAND_H +#define __LINUX_MTD_PLATNAND_H + +#include <linux/mtd/partitions.h> +#include <linux/mtd/rawnand.h> +#include <linux/platform_device.h> + +/** + * struct platform_nand_chip - chip level device structure + * @nr_chips: max. number of chips to scan for + * @chip_offset: chip number offset + * @nr_partitions: number of partitions pointed to by partitions (or zero) + * @partitions: mtd partition list + * @chip_delay: R/B delay value in us + * @options: Option flags, e.g. 16bit buswidth + * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH + * @part_probe_types: NULL-terminated array of probe types + */ +struct platform_nand_chip { + int nr_chips; + int chip_offset; + int nr_partitions; + struct mtd_partition *partitions; + int chip_delay; + unsigned int options; + unsigned int bbt_options; + const char **part_probe_types; +}; + +/** + * struct platform_nand_ctrl - controller level device structure + * @probe: platform specific function to probe/setup hardware + * @remove: platform specific function to remove/teardown hardware + * @dev_ready: platform specific function to read ready/busy pin + * @select_chip: platform specific chip select function + * @cmd_ctrl: platform specific function for controlling + * ALE/CLE/nCE. Also used to write command and address + * @write_buf: platform specific function for write buffer + * @read_buf: platform specific function for read buffer + * @priv: private data to transport driver specific settings + * + * All fields are optional and depend on the hardware driver requirements + */ +struct platform_nand_ctrl { + int (*probe)(struct platform_device *pdev); + void (*remove)(struct platform_device *pdev); + int (*dev_ready)(struct nand_chip *chip); + void (*select_chip)(struct nand_chip *chip, int cs); + void (*cmd_ctrl)(struct nand_chip *chip, int dat, unsigned int ctrl); + void (*write_buf)(struct nand_chip *chip, const uint8_t *buf, int len); + void (*read_buf)(struct nand_chip *chip, uint8_t *buf, int len); + void *priv; +}; + +/** + * struct platform_nand_data - container structure for platform-specific data + * @chip: chip level chip structure + * @ctrl: controller level device structure + */ +struct platform_nand_data { + struct platform_nand_chip chip; + struct platform_nand_ctrl ctrl; +}; + +#endif /* __LINUX_MTD_PLATNAND_H */ |