S5PV210(TQ210)学习笔记——Nand驱动之HWECC

1. nand_chip->nand_chip->ecc.write_page=s5p_nand_write_page;
2. nand_chip->ecc.size=512;
3. nand_chip->ecc.bytes=4;
4. nand_chip->ecc.strength=1;
5. nand_chip->ecc.layout=&s5p_nand_oob_64;
7. s5p_mtd_info->priv=nand_chip;
8. s5p_mtd_info->owner=THIS_MODULE;
10. //扫描Nandflash设备
11. if(nand_scan(s5p_mtd_info,1)){
12. dev_dbg(&pdev->dev,"nandscanerror");
13. gotoerr_free_info;
14. }
16. //添加分区信息
17. ret=mtd_device_parse_register(s5p_mtd_info,NULL,NULL,s5p_nand_partions,ARRAY_SIZE(s5p_nand_partions));
18. if(!ret)
19. return0;
21. err_free_info:
22. kfree(s5p_mtd_info);
23. err_free_chip:
24. kfree(nand_chip);
25. err_clk_put:
26. clk_disable(s5p_nand_clk);
27. clk_put(s5p_nand_clk);
28. err_iounmap:
29. iounmap(s5p_nand_regs);
30. err_exit:
31. returnret;
32. }
34. staticints5p_nand_remove(structplatform_device*pdev){
35. nand_release(s5p_mtd_info);
36. kfree(s5p_mtd_info);
37. kfree(nand_chip);
39. clk_disable(s5p_nand_clk);
40. clk_put(s5p_nand_clk);
42. iounmap(s5p_nand_regs);
43. return0;
44. }
46. staticstructplatform_drivers5p_nand_drv={
47. .driver={
48. .owner=THIS_MODULE,
49. .name="s5p-nand",
50. },
51. .probe=s5p_nand_probe,
52. .remove=s5p_nand_remove,
53. };
55. module_platform_driver(s5p_nand_drv);
56. MODULE_LICENSE("GPL");

接下来的几天我会继续调试一下8位HWECC，不知道能不能调好，从天嵌技术支持那里获悉，天嵌技术人员当时也调试过8位HWECC，他们从三星的某个资料中发现S5PV210的HWECC模块只能使用1位HWECC，不知道是不是真的，我要自己来验证一下。

如果有什么问题欢迎留言讨论，转载原来那篇HWECC文章的朋友请自己修正一下吧。