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Diffstat (limited to 'arch/arm/mach-exynos/setup-usb-phy.c')
-rw-r--r--arch/arm/mach-exynos/setup-usb-phy.c100
1 files changed, 72 insertions, 28 deletions
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index 41743d2..1af0a7f 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -26,11 +26,71 @@ static int exynos4_usb_host_phy_is_on(void)
return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
}
-static int exynos4_usb_phy1_init(struct platform_device *pdev)
+static void exynos4210_usb_phy_clkset(struct platform_device *pdev)
{
- struct clk *otg_clk;
struct clk *xusbxti_clk;
u32 phyclk;
+
+ /* set clock frequency for PLL */
+ phyclk = readl(EXYNOS4_PHYCLK) & ~CLKSEL_MASK;
+
+ xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
+ if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
+ switch (clk_get_rate(xusbxti_clk)) {
+ case 12 * MHZ:
+ phyclk |= CLKSEL_12M;
+ break;
+ case 24 * MHZ:
+ phyclk |= CLKSEL_24M;
+ break;
+ default:
+ case 48 * MHZ:
+ /* default reference clock */
+ break;
+ }
+ clk_put(xusbxti_clk);
+ }
+
+ writel(phyclk, EXYNOS4_PHYCLK);
+}
+
+static int exynos4210_usb_phy0_init(struct platform_device *pdev)
+{
+ u32 rstcon;
+
+ writel(readl(S5P_USBDEVICE_PHY_CONTROL) | S5P_USBDEVICE_PHY_ENABLE,
+ S5P_USBDEVICE_PHY_CONTROL);
+
+ exynos4210_usb_phy_clkset(pdev);
+
+ /* set to normal PHY0 */
+ writel((readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK), EXYNOS4_PHYPWR);
+
+ /* reset PHY0 and Link */
+ rstcon = readl(EXYNOS4_RSTCON) | PHY0_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(10);
+
+ rstcon &= ~PHY0_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+
+ return 0;
+}
+
+static int exynos4210_usb_phy0_exit(struct platform_device *pdev)
+{
+ writel((readl(EXYNOS4_PHYPWR) | PHY0_ANALOG_POWERDOWN |
+ PHY0_OTG_DISABLE), EXYNOS4_PHYPWR);
+
+ writel(readl(S5P_USBDEVICE_PHY_CONTROL) & ~S5P_USBDEVICE_PHY_ENABLE,
+ S5P_USBDEVICE_PHY_CONTROL);
+
+ return 0;
+}
+
+static int exynos4210_usb_phy1_init(struct platform_device *pdev)
+{
+ struct clk *otg_clk;
u32 rstcon;
int err;
@@ -54,27 +114,7 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
S5P_USBHOST_PHY_CONTROL);
- /* set clock frequency for PLL */
- phyclk = readl(EXYNOS4_PHYCLK) & ~CLKSEL_MASK;
-
- xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
- if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
- switch (clk_get_rate(xusbxti_clk)) {
- case 12 * MHZ:
- phyclk |= CLKSEL_12M;
- break;
- case 24 * MHZ:
- phyclk |= CLKSEL_24M;
- break;
- default:
- case 48 * MHZ:
- /* default reference clock */
- break;
- }
- clk_put(xusbxti_clk);
- }
-
- writel(phyclk, EXYNOS4_PHYCLK);
+ exynos4210_usb_phy_clkset(pdev);
/* floating prevention logic: disable */
writel((readl(EXYNOS4_PHY1CON) | FPENABLEN), EXYNOS4_PHY1CON);
@@ -102,7 +142,7 @@ static int exynos4_usb_phy1_init(struct platform_device *pdev)
return 0;
}
-static int exynos4_usb_phy1_exit(struct platform_device *pdev)
+static int exynos4210_usb_phy1_exit(struct platform_device *pdev)
{
struct clk *otg_clk;
int err;
@@ -136,16 +176,20 @@ static int exynos4_usb_phy1_exit(struct platform_device *pdev)
int s5p_usb_phy_init(struct platform_device *pdev, int type)
{
- if (type == S5P_USB_PHY_HOST)
- return exynos4_usb_phy1_init(pdev);
+ if (type == S5P_USB_PHY_DEVICE)
+ return exynos4210_usb_phy0_init(pdev);
+ else if (type == S5P_USB_PHY_HOST)
+ return exynos4210_usb_phy1_init(pdev);
return -EINVAL;
}
int s5p_usb_phy_exit(struct platform_device *pdev, int type)
{
- if (type == S5P_USB_PHY_HOST)
- return exynos4_usb_phy1_exit(pdev);
+ if (type == S5P_USB_PHY_DEVICE)
+ return exynos4210_usb_phy0_exit(pdev);
+ else if (type == S5P_USB_PHY_HOST)
+ return exynos4210_usb_phy1_exit(pdev);
return -EINVAL;
}