移植 ohci-s5p 驅動
拷貝drivers\usb\host\目錄下的 ohci-exynos.c 為 ohci-s5p.c。 然後將所有 exynos 字串替換成 s5p， 由於有些地方是 exynos4，所以還需要將 s5p4 替換為 s5p。最後還需要修改下標頭檔案，將#include修改為#include開啟核心目錄 include\linux\platform_data\，然後拷貝 usb-exynos.h 為usb-ohci-s5p.h。將所有的 exynos4 字串替換為 s5p， 將 exynos 替換為 s5p。為了以後支援 ehci 還新增 echi 的平台資料，最後 usb-ohci-s5p.h 修改為：
#ifndef __mach_s5p_ohci_h
#define __mach_s5p_ohci_h
#ifdef config_s5p_dev_usb_ehci
static struct s5p_ehci_platdata s5p_ehci_platdata;
#endif
static struct s5p_ohci_platdata s5p_ohci_platdata;
struct s5p_ohci_platdata ;
extern void s5p_ohci_set_platdata(struct s5p_ohci_platdata *pd);
#endif
開啟 drivers\usb\host\ ohci-hcd.c，在 config_usb_ohci_exynos 前面新增如下**：
#ifdef config_usb_ohci_s5p
#include "ohci-s5p.c"
#define platform_driver s5p_ohci_driver
#endif
開啟 arch\arm\mach-s5pv210\mach-smdkv210.c，在 smdkv210_devices[ ]前，新增如下**：
#include static struct resource s5p_ohci_resource = ;
static u64 samsung_device_dma_mask = dma_bit_mask(32);
struct platform_device s5p_device_ohci =
};void __init s5p_ohci_set_platdata(struct s5p_ohci_platdata *pd)
static struct platform_device *smdkv210_devices __initdata = ;#ifdef config_s5p_dev_usb_ohci
s5p_ohci_set_platdata(&s5p_ohci_platdata);
#endif
開啟 drivers\usb\host\目錄下的 kconfig，在 usb_ohci_exynos 前面新增 usb_ohci_s5p 的配置支援。
config usb_ohci_s5p
boolean "ohci support for samsung s5p soc series"
depends on usb_ohci_hcd && plat_s5p
select s5p_dev_usb_ohci
help
enable support for the samsung s5p soc's on-chip ohci controller.
config s5p_dev_usb_ohci
bool
help
compile in platform device definition for usb ohci
default y if plat_s5p在 arch\arm\mach-s5pv210\目錄下建立 setup-usb-phy.c 檔案
#include #include #include #include #include #include #include #include #include #include #include #include int s5p_usb_phy_init(struct platform_device *pdev, int type)
err = clk_enable(otg_clk);
if (err)
if (readl(s5pv210_usb_phy_con) & (0x1<<1))
__raw_writel(__raw_readl(s5pv210_usb_phy_con) | (0x1<<1), s5pv210_usb_phy_con);
__raw_writel((__raw_readl(s3c_phypwr) & ~(0x1<<7) & ~(0x1<<6))
| (0x1<<8) | (0x1<<5) | (0x1<<4), s3c_phypwr);
__raw_writel((__raw_readl(s3c_phyclk) & ~(0x1<<7)) | (0x3<<0), s3c_phyclk);
__raw_writel((__raw_readl(s3c_rstcon)) | (0x1<<4) | (0x1<<3), s3c_rstcon);
__raw_writel(__raw_readl(s3c_rstcon) & ~(0x1<<4) & ~(0x1<<3), s3c_rstcon);
/* "at least 10us" for phy reset elsewhere, 20 not enough here... */
udelay(50);
clk_disable(otg_clk);
clk_put(otg_clk);
return 0;
}int s5p_usb_phy_exit(struct platform_device *pdev, int type)
在 include/linux/platform_data 目錄下建立 setup-usb-phy.h 檔案。
//include/linux/platform_data
#ifndef __setup_usb_phy_h
#define __setup_usb_phy_h
int s5p_usb_phy_init(struct platform_device *pdev, int type);
int s5p_usb_phy_exit(struct platform_device *pdev, int type);
#endif
device drivers ——>
scsi device support ——>
<*> scsi device support
[ * ] legacy /proc/scsi/ support
<*> scsi disk support
<*> scsi cdrom support
<*> scsi generic support
hid support ——>
<*> generic hid driver
[ * ] usb support ——>
<*> support for host-side usb
<*> ohci hcd support
[ * ] ohci support for samsung s5p soc series
[ * ] generic ohci driver for a platform device
<*> usb mass storage support
[ * ] usb mass storage verbose debug
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