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74 lines
2.5 KiB
74 lines
2.5 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright © 2000-2010 David Woodhouse <[email protected]> |
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* Steven J. Hill <[email protected]> |
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* Thomas Gleixner <[email protected]> |
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* |
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* Contains all platform NAND related definitions. |
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*/ |
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#ifndef __LINUX_MTD_PLATNAND_H |
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#define __LINUX_MTD_PLATNAND_H |
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#include <linux/mtd/partitions.h> |
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#include <linux/mtd/rawnand.h> |
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#include <linux/platform_device.h> |
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/** |
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* struct platform_nand_chip - chip level device structure |
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* @nr_chips: max. number of chips to scan for |
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* @chip_offset: chip number offset |
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* @nr_partitions: number of partitions pointed to by partitions (or zero) |
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* @partitions: mtd partition list |
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* @chip_delay: R/B delay value in us |
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* @options: Option flags, e.g. 16bit buswidth |
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* @bbt_options: BBT option flags, e.g. NAND_BBT_USE_FLASH |
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* @part_probe_types: NULL-terminated array of probe types |
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*/ |
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struct platform_nand_chip { |
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int nr_chips; |
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int chip_offset; |
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int nr_partitions; |
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struct mtd_partition *partitions; |
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int chip_delay; |
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unsigned int options; |
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unsigned int bbt_options; |
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const char **part_probe_types; |
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}; |
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/** |
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* struct platform_nand_ctrl - controller level device structure |
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* @probe: platform specific function to probe/setup hardware |
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* @remove: platform specific function to remove/teardown hardware |
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* @dev_ready: platform specific function to read ready/busy pin |
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* @select_chip: platform specific chip select function |
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* @cmd_ctrl: platform specific function for controlling |
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* ALE/CLE/nCE. Also used to write command and address |
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* @write_buf: platform specific function for write buffer |
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* @read_buf: platform specific function for read buffer |
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* @priv: private data to transport driver specific settings |
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* |
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* All fields are optional and depend on the hardware driver requirements |
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*/ |
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struct platform_nand_ctrl { |
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int (*probe)(struct platform_device *pdev); |
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void (*remove)(struct platform_device *pdev); |
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int (*dev_ready)(struct nand_chip *chip); |
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void (*select_chip)(struct nand_chip *chip, int cs); |
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void (*cmd_ctrl)(struct nand_chip *chip, int dat, unsigned int ctrl); |
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void (*write_buf)(struct nand_chip *chip, const uint8_t *buf, int len); |
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void (*read_buf)(struct nand_chip *chip, uint8_t *buf, int len); |
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void *priv; |
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}; |
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/** |
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* struct platform_nand_data - container structure for platform-specific data |
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* @chip: chip level chip structure |
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* @ctrl: controller level device structure |
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*/ |
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struct platform_nand_data { |
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struct platform_nand_chip chip; |
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struct platform_nand_ctrl ctrl; |
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}; |
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#endif /* __LINUX_MTD_PLATNAND_H */
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