include/linux/mtd/platnand.h

   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 */