spi_flash.h 1.9 KB

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  1. /*
  2. * Interface to SPI flash
  3. *
  4. * Copyright (C) 2008 Atmel Corporation
  5. *
  6. * See file CREDITS for list of people who contributed to this
  7. * project.
  8. *
  9. * This program is free software; you can redistribute it and/or
  10. * modify it under the terms of the GNU General Public License
  11. * version 2 as published by the Free Software Foundation.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #ifndef _SPI_FLASH_H_
  24. #define _SPI_FLASH_H_
  25. #include <spi.h>
  26. #include <linux/types.h>
  27. struct spi_flash_region {
  28. unsigned int count;
  29. unsigned int size;
  30. };
  31. struct spi_flash {
  32. struct spi_slave *spi;
  33. const char *name;
  34. u32 size;
  35. int (*read)(struct spi_flash *flash, u32 offset,
  36. size_t len, void *buf);
  37. int (*write)(struct spi_flash *flash, u32 offset,
  38. size_t len, const void *buf);
  39. int (*erase)(struct spi_flash *flash, u32 offset,
  40. size_t len);
  41. };
  42. struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
  43. unsigned int max_hz, unsigned int spi_mode);
  44. void spi_flash_free(struct spi_flash *flash);
  45. static inline int spi_flash_read(struct spi_flash *flash, u32 offset,
  46. size_t len, void *buf)
  47. {
  48. return flash->read(flash, offset, len, buf);
  49. }
  50. static inline int spi_flash_write(struct spi_flash *flash, u32 offset,
  51. size_t len, const void *buf)
  52. {
  53. return flash->write(flash, offset, len, buf);
  54. }
  55. static inline int spi_flash_erase(struct spi_flash *flash, u32 offset,
  56. size_t len)
  57. {
  58. return flash->erase(flash, offset, len);
  59. }
  60. #endif /* _SPI_FLASH_H_ */