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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 */ |