| Boris Brezillon | c7921bb | 2018-09-07 00:38:46 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Copyright © 2000-2010 David Woodhouse <dwmw2@infradead.org> |
| 4 | * Steven J. Hill <sjhill@realitydiluted.com> |
| 5 | * Thomas Gleixner <tglx@linutronix.de> |
| 6 | * |
| 7 | * Contains all platform NAND related definitions. |
| 8 | */ |
| 9 | |
| 10 | #ifndef __LINUX_MTD_PLATNAND_H |
| 11 | #define __LINUX_MTD_PLATNAND_H |
| 12 | |
| 13 | #include <linux/mtd/partitions.h> |
| 14 | #include <linux/mtd/rawnand.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | |
| 17 | /** |
| 18 | * struct platform_nand_chip - chip level device structure |
| 19 | * @nr_chips: max. number of chips to scan for |
| 20 | * @chip_offset: chip number offset |
| 21 | * @nr_partitions: number of partitions pointed to by partitions (or zero) |
| 22 | * @partitions: mtd partition list |
| 23 | * @chip_delay: R/B delay value in us |
| 24 | * @options: Option flags, e.g. 16bit buswidth |
| 25 | * @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH |
| 26 | * @part_probe_types: NULL-terminated array of probe types |
| 27 | */ |
| 28 | struct platform_nand_chip { |
| 29 | int nr_chips; |
| 30 | int chip_offset; |
| 31 | int nr_partitions; |
| 32 | struct mtd_partition *partitions; |
| 33 | int chip_delay; |
| 34 | unsigned int options; |
| 35 | unsigned int bbt_options; |
| 36 | const char **part_probe_types; |
| 37 | }; |
| 38 | |
| 39 | /** |
| 40 | * struct platform_nand_ctrl - controller level device structure |
| 41 | * @probe: platform specific function to probe/setup hardware |
| 42 | * @remove: platform specific function to remove/teardown hardware |
| 43 | * @dev_ready: platform specific function to read ready/busy pin |
| 44 | * @select_chip: platform specific chip select function |
| 45 | * @cmd_ctrl: platform specific function for controlling |
| 46 | * ALE/CLE/nCE. Also used to write command and address |
| 47 | * @write_buf: platform specific function for write buffer |
| 48 | * @read_buf: platform specific function for read buffer |
| 49 | * @priv: private data to transport driver specific settings |
| 50 | * |
| 51 | * All fields are optional and depend on the hardware driver requirements |
| 52 | */ |
| 53 | struct platform_nand_ctrl { |
| 54 | int (*probe)(struct platform_device *pdev); |
| 55 | void (*remove)(struct platform_device *pdev); |
| 56 | int (*dev_ready)(struct nand_chip *chip); |
| 57 | void (*select_chip)(struct nand_chip *chip, int cs); |
| 58 | void (*cmd_ctrl)(struct nand_chip *chip, int dat, unsigned int ctrl); |
| 59 | void (*write_buf)(struct nand_chip *chip, const uint8_t *buf, int len); |
| 60 | void (*read_buf)(struct nand_chip *chip, uint8_t *buf, int len); |
| 61 | void *priv; |
| 62 | }; |
| 63 | |
| 64 | /** |
| 65 | * struct platform_nand_data - container structure for platform-specific data |
| 66 | * @chip: chip level chip structure |
| 67 | * @ctrl: controller level device structure |
| 68 | */ |
| 69 | struct platform_nand_data { |
| 70 | struct platform_nand_chip chip; |
| 71 | struct platform_nand_ctrl ctrl; |
| 72 | }; |
| 73 | |
| 74 | #endif /* __LINUX_MTD_PLATNAND_H */ |