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USB: EXYNOS: Set USB 2.0 HOST Link mode

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This patch adds a function to set usb host mode to USB 2.0 HOST Link
for EXYNOS5

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
This commit is contained in:
Rajeshwari Shinde 2012-05-14 05:52:02 +00:00 committed by Marek Vasut
parent f9c4e04be7
commit 71045da812
3 changed files with 28 additions and 0 deletions
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22
arch/arm/cpu/armv7/exynos/system.c
View File

@ -25,6 +25,28 @@
#include <asm/io.h>
#include <asm/arch/system.h>
static void exynos5_set_usbhost_mode(unsigned int mode)
{
struct exynos5_sysreg *sysreg =
(struct exynos5_sysreg *)samsung_get_base_sysreg();
unsigned int phy_cfg;
/* Setting USB20PHY_CONFIG register to USB 2.0 HOST link */
if (mode == USB20_PHY_CFG_HOST_LINK_EN) {
setbits_le32(&sysreg->usb20phy_cfg,
USB20_PHY_CFG_HOST_LINK_EN);
} else {
clrbits_le32(&sysreg->usb20phy_cfg,
USB20_PHY_CFG_HOST_LINK_EN);
}
}
void set_usbhost_mode(unsigned int mode)
{
if (cpu_is_exynos5())
exynos5_set_usbhost_mode(mode);
}
static void exynos4_set_system_display(void)
{
struct exynos4_sysreg *sysreg =

3
arch/arm/include/asm/arch-exynos/system.h
View File

@ -49,6 +49,9 @@ struct exynos5_sysreg {
};
#endif
#define USB20_PHY_CFG_HOST_LINK_EN (1 << 0)
void set_usbhost_mode(unsigned int mode);
void set_system_display_ctrl(void);
#endif /* _EXYNOS4_SYSTEM_H */

3
drivers/usb/host/ehci-exynos.c
View File

@ -24,12 +24,15 @@
#include <usb.h>
#include <asm/arch/cpu.h>
#include <asm/arch/ehci.h>
#include <asm/arch/system.h>
#include "ehci.h"
#include "ehci-core.h"
/* Setup the EHCI host controller. */
static void setup_usb_phy(struct exynos_usb_phy *usb)
{
set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
clrbits_le32(&usb->usbphyctrl0,
HOST_CTRL0_FSEL_MASK |
HOST_CTRL0_COMMONON_N |