S5PV210(TQ210)学习笔记——USB HOST移植

etup-usb-s5p.c文件中的内容替换成下面的代码：

1. #include
2. #include
3. #include
4. #include
5. #include
6. #include
7. #include
8. #include
9. #include
10. #include
11. #include
12. #include
14. ints5p_usb_phy_init(structplatform_device*pdev,inttype)
15. #include
16. #include
17. #include
18. #include
19. #include
20. #include
21. #include
22. #include
23. #include
24. #include
25. #include
26. #include
28. ints5p_usb_phy_init(structplatform_device*pdev,inttype)
29. {
30. interr;
31. structclk*otg_clk;
33. if(type!=S5P_USB_PHY_HOST)
34. return-EINVAL;
36. otg_clk=clk_get(&pdev->dev,"otg");
37. if(IS_ERR(otg_clk)){
38. dev_err(&pdev->dev,"Failedtogetotgclock");
39. returnPTR_ERR(otg_clk);
40. }
42. err=clk_enable(otg_clk);
43. if(err){
44. clk_put(otg_clk);
45. returnerr;
46. }
48. if(readl(S5PV210_USB_PHY_CON)&(0x1<1)){
49. clk_disable(otg_clk);
50. clk_put(otg_clk);
51. return0;
52. }
54. __raw_writel(__raw_readl(S5PV210_USB_PHY_CON)|(0x1<1),
55. S5PV210_USB_PHY_CON);
56. __raw_writel((__raw_readl(S3C_PHYPWR)
57. &~(0x1<7)&~(0x1<6))|(0x1<8)|(0x1<5)|(0x1<4),
58. S3C_PHYPWR);
59. __raw_writel((__raw_readl(S3C_PHYCLK)&~(0x1<7))|(0x3<0),
60. S3C_PHYCLK);
61. __raw_writel((__raw_readl(S3C_RSTCON))|(0x1<4)|(0x1<3),
62. S3C_RSTCON);
63. __raw_writel(__raw_readl(S3C_RSTCON)&~(0x1<4)&~(0x1<3),
64. S3C_RSTCON);
65. /*"atleast10uS"forPHYresetelsewhere,20notenoughhere...*/
66. udelay(50);
68. clk_disable(otg_clk);
69. clk_put(otg_clk);
71. return0;
72. }
75. ints5p_usb_phy_exit(structplatform_device*pdev,inttype)
76. {
77. if(type!=S5P_USB_PHY_HOST)
78. return-EINVAL;
80. __raw_writel(__raw_readl(S3C_PHYPWR)|(0x1<7)|(0x1<6),
81. S3C_PHYPWR);
82. __raw_writel(__raw_readl(S5PV210_USB_PHY_CON)&~(1<1),
83. S5PV210_USB_PHY_CON);
85. return0;
86. }

六 内核配置项修改

这时，执行make menuconfig配置，在Device Drivers --->USB support 下看不到OHCI HCD support，只能看到EHCI HCD support，这是因为内核配置存在关联关系，现在解决这个问题。

（1）切换到目录drivers/usb/，打开Kconfig，在USB_ARCH_HAS_OHCI模块下添加如下内容

1. defaultyifPLAT_S5P