[PATCH] ARM: EXYNOS: Add USB HSIC device
Dongjin Kim
tobetter at gmail.com
Mon Aug 6 09:57:40 EDT 2012
This patch support to control USB HSIC of EXYNOS4,
edited based on Samsung's GT-i9100 ICS Opensource Update7.
Change-Id: Ifba33c6a5166abf3644794eee6abe528bd71f521
Signed-off-by: Dongjin Kim <dongjin.kim at agreeyamobility.net>
---
arch/arm/mach-exynos/common.c | 5 +
arch/arm/mach-exynos/include/mach/regs-pmu.h | 12 +
arch/arm/mach-exynos/include/mach/regs-usb-phy.h | 97 +++++
arch/arm/mach-exynos/setup-usb-phy.c | 493 ++++++++++++++++------
drivers/usb/host/Kconfig | 14 +
5 files changed, 501 insertions(+), 120 deletions(-)
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 4eb39cd..94d58af 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -179,6 +179,11 @@ static struct map_desc exynos4_iodesc[] __initdata = {
.length = SZ_4K,
.type = MT_DEVICE,
}, {
+ .virtual = (unsigned long)S5P_VA_GPIO2,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_GPIO2),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }, {
.virtual = (unsigned long)S5P_VA_DMC0,
.pfn = __phys_to_pfn(EXYNOS4_PA_DMC0),
.length = SZ_64K,
diff --git a/arch/arm/mach-exynos/include/mach/regs-pmu.h b/arch/arm/mach-exynos/include/mach/regs-pmu.h
index 0bb21e2..d98c2fe 100644
--- a/arch/arm/mach-exynos/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos/include/mach/regs-pmu.h
@@ -185,6 +185,15 @@
#define S5P_PMU_LCD1_CONF S5P_PMUREG(0x3CA0)
/* Only for EXYNOS4x12 */
+#define S5P_USB_PHY_CONTROL S5P_PMUREG(0x0704)
+#define S5P_USB_PHY_ENABLE (0x1 << 0)
+
+#define S5P_HSIC_1_PHY_CONTROL S5P_PMUREG(0x0708)
+#define S5P_HSIC_1_PHY_ENABLE (0x1 << 0)
+
+#define S5P_HSIC_2_PHY_CONTROL S5P_PMUREG(0x070C)
+#define S5P_HSIC_2_PHY_ENABLE (0x1 << 0)
+
#define S5P_ISP_ARM_LOWPWR S5P_PMUREG(0x1050)
#define S5P_DIS_IRQ_ISP_ARM_LOCAL_LOWPWR S5P_PMUREG(0x1054)
#define S5P_DIS_IRQ_ISP_ARM_CENTRAL_LOWPWR S5P_PMUREG(0x1058)
@@ -242,6 +251,9 @@
#define EXYNOS5_SYS_WDTRESET (1 << 20)
+#define EXYNOS5_USBDEV_PHY_CONTROL S5P_PMUREG(0x0704)
+#define EXYNOS5_USBHOST_PHY_CONTROL S5P_PMUREG(0x0708)
+
#define EXYNOS5_ARM_CORE0_SYS_PWR_REG S5P_PMUREG(0x1000)
#define EXYNOS5_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG S5P_PMUREG(0x1004)
#define EXYNOS5_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG S5P_PMUREG(0x1008)
diff --git a/arch/arm/mach-exynos/include/mach/regs-usb-phy.h b/arch/arm/mach-exynos/include/mach/regs-usb-phy.h
index 0727773..79021a0 100644
--- a/arch/arm/mach-exynos/include/mach/regs-usb-phy.h
+++ b/arch/arm/mach-exynos/include/mach/regs-usb-phy.h
@@ -43,6 +43,43 @@
#define EXYNOS4210_CLKSEL_12M (0x2 << 0)
#define EXYNOS4210_CLKSEL_24M (0x3 << 0)
+#define EXYNOS4210_HSIC1_NORMAL_MASK (0x3 << 11)
+#define EXYNOS4210_HSIC1_SLEEP (1 << 12)
+#define EXYNOS4210_HSIC1_FORCE_SUSPEND (1 << 11)
+#define EXYNOS4210_HSIC0_NORMAL_MASK (0x3 << 9)
+#define EXYNOS4210_HSIC0_SLEEP (1 << 10)
+#define EXYNOS4210_HSIC0_FORCE_SUSPEND (1 << 9)
+
+#define EXYNOS4210_HOST_LINK_PORT_SWRST_MASK (0xf << 6)
+#define EXYNOS4210_HOST_LINK_PORT2_SWRST (1 << 9)
+#define EXYNOS4210_HOST_LINK_PORT1_SWRST (1 << 8)
+#define EXYNOS4210_HOST_LINK_PORT0_SWRST (1 << 7)
+#define EXYNOS4210_HOST_LINK_ALL_SWRST (1 << 6)
+#define EXYNOS4210_PHY1_SWRST_MASK (0x7 << 3)
+#define EXYNOS4210_PHY1_HSIC_SWRST (1 << 5)
+#define EXYNOS4210_PHY1_STD_SWRST (1 << 4)
+#define EXYNOS4210_PHY1_ALL_SWRST (1 << 3)
+
+#define EXYNOS4X12_HSIC1_NORMAL_MASK (0x7 << 12)
+#define EXYNOS4X12_HSIC1_SLEEP (1 << 14)
+#define EXYNOS4X12_HSIC1_ANALOG_POWERDOWN (1 << 13)
+#define EXYNOS4X12_HSIC1_FORCE_SUSPEND (1 << 12)
+#define EXYNOS4X12_HSIC0_NORMAL_MASK (0x7 << 9)
+#define EXYNOS4X12_HSIC0_SLEEP (1 << 11)
+#define EXYNOS4X12_HSIC0_ANALOG_POWERDOWN (1 << 10)
+#define EXYNOS4X12_HSIC0_FORCE_SUSPEND (1 << 9)
+
+#define EXYNOS4X12_HOST_LINK_PORT_SWRST_MASK (0xf << 7)
+#define EXYNOS4X12_HOST_LINK_PORT2_SWRST (1 << 10)
+#define EXYNOS4X12_HOST_LINK_PORT1_SWRST (1 << 9)
+#define EXYNOS4X12_HOST_LINK_PORT0_SWRST (1 << 8)
+#define EXYNOS4X12_HOST_LINK_ALL_SWRST (1 << 7)
+#define EXYNOS4X12_PHY1_SWRST_MASK (0xf << 3)
+#define EXYNOS4X12_PHY1_HSIC1_SWRST (1 << 6)
+#define EXYNOS4X12_PHY1_HSIC0_SWRST (1 << 5)
+#define EXYNOS4X12_PHY1_SWRST (1 << 4)
+#define EXYNOS4X12_HOST_PHY_SWRST (1 << 3)
+
#define EXYNOS4X12_CLKSEL_MASK (0x7 << 0)
#define EXYNOS4X12_CLKSEL_9600K (0x0 << 0)
#define EXYNOS4X12_CLKSEL_10M (0x1 << 0)
@@ -71,4 +108,64 @@
#define EXYNOS4_PHY1CON EXYNOS4_HSOTG_PHYREG(0x34)
#define FPENABLEN (1 << 0)
+/* For Exynos5 */
+#define EXYNOS5_PHY_HOST_CTRL0 EXYNOS4_HSOTG_PHYREG(0x00)
+#define HOST_CTRL0_PHYSWRSTALL (0x1 << 31)
+#define HOST_CTRL0_REFCLKSEL(val) (val << 19)
+#define EXYNOS5_CLKSEL_50M (0x7)
+#define EXYNOS5_CLKSEL_24M (0x5)
+#define EXYNOS5_CLKSEL_20M (0x4)
+#define EXYNOS5_CLKSEL_19200K (0x3)
+#define EXYNOS5_CLKSEL_12M (0x2)
+#define EXYNOS5_CLKSEL_10M (0x1)
+#define EXYNOS5_CLKSEL_9600K (0x0)
+#define HOST_CTRL0_CLKSEL_SHIFT (16)
+#define HOST_CTRL0_FSEL_MASK (0x7 << 16)
+
+#define HOST_CTRL0_COMMONON_N (0x1 << 9)
+#define HOST_CTRL0_SIDDQ (0x1 << 6)
+#define HOST_CTRL0_FORCESLEEP (0x1 << 5)
+#define HOST_CTRL0_FORCESUSPEND (0x1 << 4)
+#define HOST_CTRL0_WORDINTERFACE (0x1 << 3)
+#define HOST_CTRL0_UTMISWRST (0x1 << 2)
+#define HOST_CTRL0_LINKSWRST (0x1 << 1)
+#define HOST_CTRL0_PHYSWRST (0x1 << 0)
+
+#define EXYNOS5_PHY_HOST_TUNE0 EXYNOS4_HSOTG_PHYREG(0x04)
+#define EXYNOS5_PHY_HOST_TEST0 EXYNOS4_HSOTG_PHYREG(0x08)
+
+#define EXYNOS5_PHY_HSIC_CTRL1 EXYNOS4_HSOTG_PHYREG(0x10)
+#define EXYNOS5_PHY_HSIC_CTRL2 EXYNOS4_HSOTG_PHYREG(0x20)
+#define HSIC_CTRL_REFCLKSEL(val) ((val&0x3) << 23)
+#define HSIC_CTRL_REFCLKDIV(val) ((val&0x7f) << 16)
+#define HSIC_CTRL_SIDDQ (0x1 << 6)
+#define HSIC_CTRL_FORCESLEEP (0x1 << 5)
+#define HSIC_CTRL_FORCESUSPEND (0x1 << 4)
+#define HSIC_CTRL_WORDINTERFACE (0x1 << 3)
+#define HSIC_CTRL_UTMISWRST (0x1 << 2)
+#define HSIC_CTRL_PHYSWRST (0x1 << 0)
+
+#define EXYNOS5_PHY_HOST_EHCICTRL EXYNOS4_HSOTG_PHYREG(0x30)
+#define EHCICTRL_ENAINCRXALIGN (0x1 << 29)
+#define EHCICTRL_ENAINCR4 (0x1 << 28)
+#define EHCICTRL_ENAINCR8 (0x1 << 27)
+#define EHCICTRL_ENAINCR16 (0x1 << 26)
+
+#define EXYNOS5_PHY_HOST_OHCICTRL EXYNOS4_HSOTG_PHYREG(0x34)
+
+#define EXYNOS5_PHY_OTG_SYS EXYNOS4_HSOTG_PHYREG(0x38)
+#define OTG_SYS_PHYLINK_SW_RESET (0x1 << 14)
+#define OTG_SYS_LINK_SW_RST_UOTG (0x1 << 13)
+#define OTG_SYS_PHY0_SW_RST (0x1 << 12)
+#define OTG_SYS_REF_CLK_SEL(val) ((val&0x3) << 9)
+#define OTG_SYS_REF_CLK_SEL_MASK (0x3 << 9)
+#define OTG_SYS_IP_PULLUP_UOTG (0x1 << 8)
+#define OTG_SYS_COMMON_ON (0x1 << 7)
+#define OTG_SYS_CLKSEL_SHIFT (4)
+#define OTG_SYS_CTRL0_FSEL_MASK (0x7 << 4)
+#define OTG_SYS_FORCE_SLEEP (0x1 << 3)
+#define OTG_SYS_OTGDISABLE (0x1 << 2)
+#define OTG_SYS_SIDDQ_UOTG (0x1 << 1)
+#define OTG_SYS_FORCE_SUSPEND (0x1 << 0)
+
#endif /* __PLAT_S5P_REGS_USB_PHY_H */
diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
index b81cc56..c725745 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -1,5 +1,6 @@
/*
* Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Yulgon Kim <yulgon.kim at samsung.com>
* Author: Joonyoung Shim <jy0922.shim at samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
@@ -19,205 +20,457 @@
#include <plat/cpu.h>
#include <plat/usb-phy.h>
+#define ETC6PUD (S5P_VA_GPIO2 + 0x228)
+#define EXYNOS4_USB_CFG (S3C_VA_SYS + 0x21C)
+
+#define PHY_ENABLE (1 << 0)
+#define PHY_DISABLE (0)
+
+enum usb_host_type {
+ HOST_PHY_EHCI = (0x1 << 0),
+ HOST_PHY_OHCI = (0x1 << 1),
+};
+
+enum usb_phy_type {
+ USB_PHY = (0x1 << 0),
+ USB_PHY0 = (0x1 << 0),
+ USB_PHY1 = (0x1 << 1),
+ USB_PHY_HSIC0 = (0x1 << 1),
+ USB_PHY_HSIC1 = (0x1 << 2),
+};
+
static atomic_t host_usage;
+static DEFINE_MUTEX(phy_lock);
+static struct clk *phy_clk;
static int exynos4_usb_host_phy_is_on(void)
{
return (readl(EXYNOS4_PHYPWR) & PHY1_STD_ANALOG_POWERDOWN) ? 0 : 1;
}
-static void exynos4210_usb_phy_clkset(struct platform_device *pdev)
+static int exynos4_usb_phy20_is_on(void)
{
- struct clk *xusbxti_clk;
- u32 phyclk;
+ return exynos4_usb_host_phy_is_on();
+}
+
+static int exynos_usb_phy_clock_enable(struct platform_device *pdev)
+{
+ int err;
+
+ if (!phy_clk) {
+ if (soc_is_exynos4210() ||
+ soc_is_exynos4212() || soc_is_exynos4412())
+ phy_clk = clk_get(&pdev->dev, "otg");
+ else
+ phy_clk = clk_get(&pdev->dev, "usbhost");
+
+ if (IS_ERR(phy_clk)) {
+ dev_err(&pdev->dev, "Failed to get phy clock\n");
+ return PTR_ERR(phy_clk);
+ }
+ }
+
+ err = clk_enable(phy_clk);
+
+ return err;
+}
- xusbxti_clk = clk_get(&pdev->dev, "xusbxti");
- if (xusbxti_clk && !IS_ERR(xusbxti_clk)) {
- if (soc_is_exynos4210()) {
- /* set clock frequency for PLL */
- phyclk = readl(EXYNOS4_PHYCLK) & ~EXYNOS4210_CLKSEL_MASK;
-
- switch (clk_get_rate(xusbxti_clk)) {
- case 12 * MHZ:
- phyclk |= EXYNOS4210_CLKSEL_12M;
- break;
- case 48 * MHZ:
- phyclk |= EXYNOS4210_CLKSEL_48M;
- break;
- default:
- case 24 * MHZ:
- phyclk |= EXYNOS4210_CLKSEL_24M;
- break;
- }
- writel(phyclk, EXYNOS4_PHYCLK);
- } else if (soc_is_exynos4212() || soc_is_exynos4412()) {
- /* set clock frequency for PLL */
- phyclk = readl(EXYNOS4_PHYCLK) & ~EXYNOS4X12_CLKSEL_MASK;
-
- switch (clk_get_rate(xusbxti_clk)) {
- case 9600 * KHZ:
- phyclk |= EXYNOS4X12_CLKSEL_9600K;
- break;
- case 10 * MHZ:
- phyclk |= EXYNOS4X12_CLKSEL_10M;
- break;
- case 12 * MHZ:
- phyclk |= EXYNOS4X12_CLKSEL_12M;
- break;
- case 19200 * KHZ:
- phyclk |= EXYNOS4X12_CLKSEL_19200K;
- break;
- case 20 * MHZ:
- phyclk |= EXYNOS4X12_CLKSEL_20M;
- break;
- default:
- case 24 * MHZ:
- /* default reference clock */
- phyclk |= EXYNOS4X12_CLKSEL_24M;
- break;
- }
- writel(phyclk, EXYNOS4_PHYCLK);
+static int exynos_usb_phy_clock_disable(struct platform_device *pdev)
+{
+ if (!phy_clk) {
+ if (soc_is_exynos4210() ||
+ soc_is_exynos4212() || soc_is_exynos4412())
+ phy_clk = clk_get(&pdev->dev, "otg");
+ else
+ phy_clk = clk_get(&pdev->dev, "usbhost");
+ if (IS_ERR(phy_clk)) {
+ dev_err(&pdev->dev, "Failed to get phy clock\n");
+ return PTR_ERR(phy_clk);
}
- clk_put(xusbxti_clk);
}
+
+ clk_disable(phy_clk);
+
+ return 0;
}
-static int exynos4210_usb_phy0_init(struct platform_device *pdev)
+static u32 exynos_usb_phy_set_clock(struct platform_device *pdev)
{
+ struct clk *ref_clk;
+ u32 refclk_freq = 0;
+
+ if (soc_is_exynos4210() || soc_is_exynos4212() || soc_is_exynos4412())
+ ref_clk = clk_get(&pdev->dev, "xusbxti");
+ else
+ ref_clk = clk_get(&pdev->dev, "ext_xtal");
+
+ if (IS_ERR(ref_clk)) {
+ dev_err(&pdev->dev, "Failed to get reference clock\n");
+ return PTR_ERR(ref_clk);
+ }
+
+ if (soc_is_exynos4210()) {
+ switch (clk_get_rate(ref_clk)) {
+ case 12 * MHZ:
+ refclk_freq = EXYNOS4210_CLKSEL_12M;
+ break;
+ case 48 * MHZ:
+ refclk_freq = EXYNOS4210_CLKSEL_48M;
+ break;
+ case 24 * MHZ:
+ default:
+ /* default reference clock */
+ refclk_freq = EXYNOS4210_CLKSEL_24M;
+ break;
+ }
+ } else if (soc_is_exynos4212() | soc_is_exynos4412()) {
+ switch (clk_get_rate(ref_clk)) {
+ case 96 * 100000:
+ refclk_freq = EXYNOS4X12_CLKSEL_9600K;
+ break;
+ case 10 * MHZ:
+ refclk_freq = EXYNOS4X12_CLKSEL_10M;
+ break;
+ case 12 * MHZ:
+ refclk_freq = EXYNOS4X12_CLKSEL_12M;
+ break;
+ case 192 * 100000:
+ refclk_freq = EXYNOS4X12_CLKSEL_19200K;
+ break;
+ case 20 * MHZ:
+ refclk_freq = EXYNOS4X12_CLKSEL_20M;
+ break;
+ case 24 * MHZ:
+ default:
+ /* default reference clock */
+ refclk_freq = EXYNOS4X12_CLKSEL_24M;
+ break;
+ }
+ } else {
+ switch (clk_get_rate(ref_clk)) {
+ case 96 * 100000:
+ refclk_freq = EXYNOS5_CLKSEL_9600K;
+ break;
+ case 10 * MHZ:
+ refclk_freq = EXYNOS5_CLKSEL_10M;
+ break;
+ case 12 * MHZ:
+ refclk_freq = EXYNOS5_CLKSEL_12M;
+ break;
+ case 192 * 100000:
+ refclk_freq = EXYNOS5_CLKSEL_19200K;
+ break;
+ case 20 * MHZ:
+ refclk_freq = EXYNOS5_CLKSEL_20M;
+ break;
+ case 50 * MHZ:
+ refclk_freq = EXYNOS5_CLKSEL_50M;
+ break;
+ case 24 * MHZ:
+ default:
+ /* default reference clock */
+ refclk_freq = EXYNOS5_CLKSEL_24M;
+ break;
+ }
+ }
+ clk_put(ref_clk);
+
+ return refclk_freq;
+}
+
+static void exynos_usb_phy_control(enum usb_phy_type phy_type , int on)
+{
+ if (soc_is_exynos4210()) {
+ if (phy_type & USB_PHY0)
+ writel(on, S5P_USBDEVICE_PHY_CONTROL);
+ if (phy_type & USB_PHY1)
+ writel(on, S5P_USBHOST_PHY_CONTROL);
+ } else if (soc_is_exynos4212() | soc_is_exynos4412()) {
+ if (phy_type & USB_PHY)
+ writel(on, S5P_USB_PHY_CONTROL);
+#ifdef CONFIG_USB_S5P_HSIC0
+ if (phy_type & USB_PHY_HSIC0)
+ writel(on, S5P_HSIC_1_PHY_CONTROL);
+#endif
+#ifdef CONFIG_USB_S5P_HSIC1
+ if (phy_type & USB_PHY_HSIC1)
+ writel(on, S5P_HSIC_2_PHY_CONTROL);
+#endif
+ } else {
+ if (phy_type & USB_PHY0)
+ writel(on, EXYNOS5_USBDEV_PHY_CONTROL);
+ if (phy_type & USB_PHY1)
+ writel(on, EXYNOS5_USBHOST_PHY_CONTROL);
+ }
+}
+
+static int exynos4_usb_phy0_init(struct platform_device *pdev)
+{
+ u32 phypwr;
+ u32 phyclk;
u32 rstcon;
- writel(readl(S5P_USBDEVICE_PHY_CONTROL) | S5P_USBDEVICE_PHY_ENABLE,
- S5P_USBDEVICE_PHY_CONTROL);
+ exynos_usb_phy_control(USB_PHY0, PHY_ENABLE);
- exynos4210_usb_phy_clkset(pdev);
+ /* set clock frequency for PLL */
+ phyclk = exynos_usb_phy_set_clock(pdev);
+ phyclk &= ~(PHY0_COMMON_ON_N);
+ writel(phyclk, EXYNOS4_PHYCLK);
- /* set to normal PHY0 */
- writel((readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK), EXYNOS4_PHYPWR);
+ /* set to normal of PHY0 */
+ phypwr = readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK;
+ writel(phypwr, EXYNOS4_PHYPWR);
- /* reset PHY0 and Link */
+ /* reset all ports of both PHY 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)
+static int exynos4_usb_phy0_exit(struct platform_device *pdev)
{
- writel((readl(EXYNOS4_PHYPWR) | PHY0_ANALOG_POWERDOWN |
- PHY0_OTG_DISABLE), EXYNOS4_PHYPWR);
+ /* unset to normal of PHY0 */
+ writel((readl(EXYNOS4_PHYPWR) | PHY0_NORMAL_MASK),
+ EXYNOS4_PHYPWR);
- writel(readl(S5P_USBDEVICE_PHY_CONTROL) & ~S5P_USBDEVICE_PHY_ENABLE,
- S5P_USBDEVICE_PHY_CONTROL);
+ exynos_usb_phy_control(USB_PHY0, PHY_DISABLE);
return 0;
}
-static int exynos4210_usb_phy1_init(struct platform_device *pdev)
+static int exynos4_usb_phy1_init(struct platform_device *pdev)
{
- struct clk *otg_clk;
+ u32 phypwr;
+ u32 phyclk;
u32 rstcon;
- int err;
atomic_inc(&host_usage);
- otg_clk = clk_get(&pdev->dev, "otg");
- if (IS_ERR(otg_clk)) {
- dev_err(&pdev->dev, "Failed to get otg clock\n");
- return PTR_ERR(otg_clk);
+ if (exynos4_usb_host_phy_is_on()) {
+ dev_err(&pdev->dev, "Already power on PHY\n");
+ return 0;
}
- err = clk_enable(otg_clk);
- if (err) {
- clk_put(otg_clk);
- return err;
- }
+ /*
+ * set XuhostOVERCUR to in-active by controlling ET6PUD[15:14]
+ * 0x0 : pull-up/down disabled
+ * 0x1 : pull-down enabled
+ * 0x2 : reserved
+ * 0x3 : pull-up enabled
+ */
+ writel((__raw_readl(ETC6PUD) & ~(0x3 << 14)) | (0x3 << 14),
+ ETC6PUD);
- if (exynos4_usb_host_phy_is_on())
- return 0;
+ exynos_usb_phy_control(USB_PHY1, PHY_ENABLE);
- writel(readl(S5P_USBHOST_PHY_CONTROL) | S5P_USBHOST_PHY_ENABLE,
- S5P_USBHOST_PHY_CONTROL);
+ /* set clock frequency for PLL */
+ phyclk = exynos_usb_phy_set_clock(pdev);
+ phyclk &= ~(PHY1_COMMON_ON_N);
+ writel(phyclk, EXYNOS4_PHYCLK);
- exynos4210_usb_phy_clkset(pdev);
+ /* set to normal HSIC 0 and 1 of PHY1 */
+ phypwr = readl(EXYNOS4_PHYPWR);
+ phypwr &= ~(PHY1_STD_NORMAL_MASK
+ | EXYNOS4210_HSIC0_NORMAL_MASK);
+ writel(phypwr, EXYNOS4_PHYPWR);
/* floating prevention logic: disable */
writel((readl(EXYNOS4_PHY1CON) | FPENABLEN), EXYNOS4_PHY1CON);
- /* set to normal HSIC 0 and 1 of PHY1 */
- writel((readl(EXYNOS4_PHYPWR) & ~PHY1_HSIC_NORMAL_MASK),
- EXYNOS4_PHYPWR);
-
- /* set to normal standard USB of PHY1 */
- writel((readl(EXYNOS4_PHYPWR) & ~PHY1_STD_NORMAL_MASK), EXYNOS4_PHYPWR);
-
/* reset all ports of both PHY and Link */
- rstcon = readl(EXYNOS4_RSTCON) | HOST_LINK_PORT_SWRST_MASK |
- PHY1_SWRST_MASK;
+ rstcon = readl(EXYNOS4_RSTCON)
+ | EXYNOS4210_HOST_LINK_PORT_SWRST_MASK
+ | EXYNOS4210_PHY1_SWRST_MASK;
writel(rstcon, EXYNOS4_RSTCON);
udelay(10);
- rstcon &= ~(HOST_LINK_PORT_SWRST_MASK | PHY1_SWRST_MASK);
+ rstcon &= ~(EXYNOS4210_HOST_LINK_PORT_SWRST_MASK
+ | EXYNOS4210_PHY1_SWRST_MASK);
writel(rstcon, EXYNOS4_RSTCON);
udelay(80);
- clk_disable(otg_clk);
- clk_put(otg_clk);
+ return 0;
+}
+
+static int exynos4_usb_phy1_exit(struct platform_device *pdev)
+{
+ u32 phypwr;
+
+ if (atomic_dec_return(&host_usage) > 0) {
+ dev_info(&pdev->dev, "still being used\n");
+ return -EBUSY;
+ }
+
+ phypwr = readl(EXYNOS4_PHYPWR)
+ | PHY1_STD_NORMAL_MASK
+ | EXYNOS4210_HSIC0_NORMAL_MASK;
+ writel(phypwr, EXYNOS4_PHYPWR);
+
+ exynos_usb_phy_control(USB_PHY1, PHY_DISABLE);
return 0;
}
-static int exynos4210_usb_phy1_exit(struct platform_device *pdev)
+static int exynos4_usb_phy20_init(struct platform_device *pdev)
{
- struct clk *otg_clk;
- int err;
+ u32 phypwr, phyclk, rstcon;
- if (atomic_dec_return(&host_usage) > 0)
- return 0;
+ atomic_inc(&host_usage);
- otg_clk = clk_get(&pdev->dev, "otg");
- if (IS_ERR(otg_clk)) {
- dev_err(&pdev->dev, "Failed to get otg clock\n");
- return PTR_ERR(otg_clk);
+ if (exynos4_usb_phy20_is_on()) {
+ dev_err(&pdev->dev, "Already power on PHY\n");
+ return 0;
}
- err = clk_enable(otg_clk);
- if (err) {
- clk_put(otg_clk);
- return err;
+ /*
+ * set XuhostOVERCUR to in-active by controlling ET6PUD[15:14]
+ * 0x0 : pull-up/down disabled
+ * 0x1 : pull-down enabled
+ * 0x2 : reserved
+ * 0x3 : pull-up enabled
+ */
+ writel((__raw_readl(ETC6PUD) & ~(0x3 << 14)) | (0x3 << 14),
+ ETC6PUD);
+
+ exynos_usb_phy_control(USB_PHY
+ | USB_PHY_HSIC0,
+ PHY_ENABLE);
+
+ /* set clock frequency for PLL */
+ phyclk = exynos_usb_phy_set_clock(pdev);
+ /* COMMON Block configuration during suspend */
+ phyclk &= ~(PHY0_COMMON_ON_N | PHY1_COMMON_ON_N);
+ writel(phyclk, EXYNOS4_PHYCLK);
+
+ /* set to normal of Device */
+ phypwr = readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK;
+ writel(phypwr, EXYNOS4_PHYPWR);
+
+ /* set to normal of Host */
+ phypwr = readl(EXYNOS4_PHYPWR);
+ phypwr &= ~(PHY1_STD_NORMAL_MASK
+ | EXYNOS4X12_HSIC0_NORMAL_MASK);
+ writel(phypwr, EXYNOS4_PHYPWR);
+
+ /* reset both PHY and Link of Device */
+ rstcon = readl(EXYNOS4_RSTCON) | PHY0_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(10);
+ rstcon &= ~PHY0_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+
+ /* reset both PHY and Link of Host */
+ rstcon = readl(EXYNOS4_RSTCON)
+ | EXYNOS4X12_HOST_LINK_PORT_SWRST_MASK
+ | EXYNOS4X12_PHY1_SWRST_MASK;
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(10);
+
+ rstcon &= ~(EXYNOS4X12_HOST_LINK_PORT_SWRST_MASK
+ | EXYNOS4X12_PHY1_SWRST_MASK);
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(80);
+
+ return 0;
+}
+
+static int exynos4_usb_phy20_exit(struct platform_device *pdev)
+{
+ u32 phypwr;
+
+ if (atomic_dec_return(&host_usage) > 0) {
+ dev_info(&pdev->dev, "still being used\n");
+ return -EBUSY;
}
- writel((readl(EXYNOS4_PHYPWR) | PHY1_STD_ANALOG_POWERDOWN),
+ /* unset to normal of Device */
+ writel((readl(EXYNOS4_PHYPWR) | PHY0_NORMAL_MASK),
EXYNOS4_PHYPWR);
- writel(readl(S5P_USBHOST_PHY_CONTROL) & ~S5P_USBHOST_PHY_ENABLE,
- S5P_USBHOST_PHY_CONTROL);
+ /* unset to normal of Host */
+ phypwr = readl(EXYNOS4_PHYPWR)
+ | PHY1_STD_NORMAL_MASK
+ | EXYNOS4X12_HSIC0_NORMAL_MASK;
+ writel(phypwr, EXYNOS4_PHYPWR);
- clk_disable(otg_clk);
- clk_put(otg_clk);
+ exynos_usb_phy_control(USB_PHY
+ | USB_PHY_HSIC0,
+ PHY_DISABLE);
+
+ return 0;
+}
+
+static int exynos_usb_dev_phy20_init(struct platform_device *pdev)
+{
+ if (soc_is_exynos4212() || soc_is_exynos4412())
+ exynos4_usb_phy20_init(pdev);
+
+ writel(0, EXYNOS4_USB_CFG);
+
+ return 0;
+}
+
+static int exynos_usb_dev_phy20_exit(struct platform_device *pdev)
+{
+ if (soc_is_exynos4212() || soc_is_exynos4412())
+ exynos4_usb_phy20_exit(pdev);
return 0;
}
int s5p_usb_phy_init(struct platform_device *pdev, int type)
{
- 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);
+ int ret = -EINVAL;
+
+ if (exynos_usb_phy_clock_enable(pdev))
+ return ret;
+
+ mutex_lock(&phy_lock);
+ if (type == S5P_USB_PHY_HOST) {
+ if (soc_is_exynos4210())
+ ret = exynos4_usb_phy1_init(pdev);
+ else if (soc_is_exynos4212() || soc_is_exynos4412())
+ ret = exynos4_usb_phy20_init(pdev);
+ } else if (type == S5P_USB_PHY_DEVICE) {
+ if (soc_is_exynos4210())
+ ret = exynos4_usb_phy0_init(pdev);
+ else
+ ret = exynos_usb_dev_phy20_init(pdev);
+ }
+
+ mutex_unlock(&phy_lock);
+ exynos_usb_phy_clock_disable(pdev);
- return -EINVAL;
+ return ret;
}
int s5p_usb_phy_exit(struct platform_device *pdev, int type)
{
- 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);
+ int ret = -EINVAL;
+
+ if (exynos_usb_phy_clock_enable(pdev))
+ return ret;
+
+ mutex_lock(&phy_lock);
+
+ if (type == S5P_USB_PHY_HOST) {
+ if (soc_is_exynos4210())
+ ret = exynos4_usb_phy1_exit(pdev);
+ else if (soc_is_exynos4212() || soc_is_exynos4412())
+ ret = exynos4_usb_phy20_exit(pdev);
+ } else if (type == S5P_USB_PHY_DEVICE) {
+ if (soc_is_exynos4210())
+ ret = exynos4_usb_phy0_exit(pdev);
+ else
+ ret = exynos_usb_dev_phy20_exit(pdev);
+ }
+
+ mutex_unlock(&phy_lock);
+ exynos_usb_phy_clock_disable(pdev);
- return -EINVAL;
+ return ret;
}
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 075d2ec..5f69041 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -199,6 +199,20 @@ config USB_EHCI_S5P
help
Enable support for the S5P SOC's on-chip EHCI controller.
+config USB_S5P_HSIC0
+ boolean "S5P HSIC0 support"
+ depends on USB_EHCI_HCD && PLAT_S5P && USB_EHCI_S5P
+ default n
+ help
+ Enable support for the S5P SOC's on-chip HSIC PHY.
+
+config USB_S5P_HSIC1
+ boolean "S5P HSIC1 support"
+ depends on USB_EHCI_HCD && PLAT_S5P && USB_EHCI_S5P
+ default n
+ help
+ Enable support for the S5P SOC's on-chip HSIC PHY.
+
config USB_EHCI_MV
bool "EHCI support for Marvell on-chip controller"
depends on USB_EHCI_HCD && (ARCH_PXA || ARCH_MMP)
--
1.7.9.5
More information about the linux-arm-kernel
mailing list