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 */ |
75 | |