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atmel
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pmecc.h

pmecc.h 2.2 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 */
    2. 

  2. /*
    3. 

  3.  * © Copyright 2016 ATMEL
    4. 

  4.  * © Copyright 2016 Free Electrons
    5. 

  5.  *
    6. 

  6.  * Author: Boris Brezillon <[email protected]>
    7. 

  7.  *
    8. 

  8.  * Derived from the atmel_nand.c driver which contained the following
    9. 

  9.  * copyrights:
    10. 

  10.  *
    11. 

  11.  *    Copyright © 2003 Rick Bronson
    12. 

  12.  *
    13. 

  13.  *    Derived from drivers/mtd/nand/autcpu12.c (removed in v3.8)
    14. 

  14.  *        Copyright © 2001 Thomas Gleixner ([email protected])
    15. 

  15.  *
    16. 

  16.  *    Derived from drivers/mtd/spia.c (removed in v3.8)
    17. 

  17.  *        Copyright © 2000 Steven J. Hill ([email protected])
    18. 

  18.  *
    19. 

  19.  *
    20. 

  20.  *    Add Hardware ECC support for AT91SAM9260 / AT91SAM9263
    21. 

  21.  *        Richard Genoud ([email protected]), Adeneo Copyright © 2007
    22. 

  22.  *
    23. 

  23.  *        Derived from Das U-Boot source code
    24. 

  24.  *              (u-boot-1.1.5/board/atmel/at91sam9263ek/nand.c)
    25. 

  25.  *        © Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas
    26. 

  26.  *
    27. 

  27.  *    Add Programmable Multibit ECC support for various AT91 SoC
    28. 

  28.  *        © Copyright 2012 ATMEL, Hong Xu
    29. 

  29.  *
    30. 

  30.  *    Add Nand Flash Controller support for SAMA5 SoC
    31. 

  31.  *        © Copyright 2013 ATMEL, Josh Wu ([email protected])
    32. 

  32.  */
    33. 

  33. 

  34. #ifndef ATMEL_PMECC_H
    35. 

  35. #define ATMEL_PMECC_H
    36. 

  36. 

  37. #define ATMEL_PMECC_MAXIMIZE_ECC_STRENGTH	0
    38. 

  38. #define ATMEL_PMECC_SECTOR_SIZE_AUTO		0
    39. 

  39. #define ATMEL_PMECC_OOBOFFSET_AUTO		-1
    40. 

  40. 

  41. struct atmel_pmecc_user_req {
    42. 

  42. 	int pagesize;
    43. 

  43. 	int oobsize;
    44. 

  44. 	struct {
    45. 

  45. 		int strength;
    46. 

  46. 		int bytes;
    47. 

  47. 		int sectorsize;
    48. 

  48. 		int nsectors;
    49. 

  49. 		int ooboffset;
    50. 

  50. 	} ecc;
    51. 

  51. };
    52. 

  52. 

  53. struct atmel_pmecc *devm_atmel_pmecc_get(struct device *dev);
    54. 

  54. 

  55. struct atmel_pmecc_user *
    56. 

  56. atmel_pmecc_create_user(struct atmel_pmecc *pmecc,
    57. 

  57. 			struct atmel_pmecc_user_req *req);
    58. 

  58. void atmel_pmecc_destroy_user(struct atmel_pmecc_user *user);
    59. 

  59. 

  60. void atmel_pmecc_reset(struct atmel_pmecc *pmecc);
    61. 

  61. int atmel_pmecc_enable(struct atmel_pmecc_user *user, int op);
    62. 

  62. void atmel_pmecc_disable(struct atmel_pmecc_user *user);
    63. 

  63. int atmel_pmecc_wait_rdy(struct atmel_pmecc_user *user);
    64. 

  64. int atmel_pmecc_correct_sector(struct atmel_pmecc_user *user, int sector,
    65. 

  65. 			       void *data, void *ecc);
    66. 

  66. bool atmel_pmecc_correct_erased_chunks(struct atmel_pmecc_user *user);
    67. 

  67. void atmel_pmecc_get_generated_eccbytes(struct atmel_pmecc_user *user,
    68. 

  68. 					int sector, void *ecc);
    69. 

  69. 

  70. #endif /* ATMEL_PMECC_H */
    71.