[PATCH 2/4] ARM: EXYNOS4: Add usb host phy control
Joonyoung Shim
jy0922.shim at samsung.com
Fri Apr 8 00:22:10 EDT 2011
EXYNOS4 has 2 phys for usb host and usb device. This patch supports to
control usb host phy of EXYNOS4.
Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
---
arch/arm/mach-exynos4/Makefile | 2 +
arch/arm/mach-exynos4/cpu.c | 7 +-
arch/arm/mach-exynos4/include/mach/map.h | 1 +
arch/arm/mach-exynos4/include/mach/regs-pmu.h | 3 +
arch/arm/mach-exynos4/include/mach/regs-usb-phy.h | 64 ++++++++++
arch/arm/mach-exynos4/usb-phy.c | 136 +++++++++++++++++++++
arch/arm/plat-s5p/dev-ehci.c | 9 ++-
arch/arm/plat-s5p/include/plat/map-s5p.h | 2 +-
arch/arm/plat-s5p/include/plat/usb-phy.h | 22 ++++
9 files changed, 243 insertions(+), 3 deletions(-)
create mode 100644 arch/arm/mach-exynos4/include/mach/regs-usb-phy.h
create mode 100644 arch/arm/mach-exynos4/usb-phy.c
create mode 100644 arch/arm/plat-s5p/include/plat/usb-phy.h
diff --git a/arch/arm/mach-exynos4/Makefile b/arch/arm/mach-exynos4/Makefile
index de197d6..683fc38 100644
--- a/arch/arm/mach-exynos4/Makefile
+++ b/arch/arm/mach-exynos4/Makefile
@@ -55,3 +55,5 @@ obj-$(CONFIG_EXYNOS4_SETUP_I2C7) += setup-i2c7.o
obj-$(CONFIG_EXYNOS4_SETUP_KEYPAD) += setup-keypad.o
obj-$(CONFIG_EXYNOS4_SETUP_SDHCI) += setup-sdhci.o
obj-$(CONFIG_EXYNOS4_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
+
+obj-$(CONFIG_USB_SUPPORT) += usb-phy.o
diff --git a/arch/arm/mach-exynos4/cpu.c b/arch/arm/mach-exynos4/cpu.c
index 7930113..08813a6 100644
--- a/arch/arm/mach-exynos4/cpu.c
+++ b/arch/arm/mach-exynos4/cpu.c
@@ -97,7 +97,12 @@ static struct map_desc exynos4_iodesc[] __initdata = {
.pfn = __phys_to_pfn(EXYNOS4_PA_SROMC),
.length = SZ_4K,
.type = MT_DEVICE,
- },
+ }, {
+ .virtual = (unsigned long)S5P_VA_USB_HSPHY,
+ .pfn = __phys_to_pfn(EXYNOS4_PA_HSPHY),
+ .length = SZ_4K,
+ .type = MT_DEVICE,
+ }
};
static void exynos4_idle(void)
diff --git a/arch/arm/mach-exynos4/include/mach/map.h b/arch/arm/mach-exynos4/include/mach/map.h
index 213c2a2..0009e77 100644
--- a/arch/arm/mach-exynos4/include/mach/map.h
+++ b/arch/arm/mach-exynos4/include/mach/map.h
@@ -102,6 +102,7 @@
#define EXYNOS4_PA_SROMC 0x12570000
#define EXYNOS4_PA_EHCI 0x12580000
+#define EXYNOS4_PA_HSPHY 0x125B0000
#define EXYNOS4_PA_UART 0x13800000
diff --git a/arch/arm/mach-exynos4/include/mach/regs-pmu.h b/arch/arm/mach-exynos4/include/mach/regs-pmu.h
index 62b0014..a964337 100644
--- a/arch/arm/mach-exynos4/include/mach/regs-pmu.h
+++ b/arch/arm/mach-exynos4/include/mach/regs-pmu.h
@@ -33,6 +33,9 @@
#define S5P_EINT_WAKEUP_MASK S5P_PMUREG(0x0604)
#define S5P_WAKEUP_MASK S5P_PMUREG(0x0608)
+#define S5P_USBHOST_PHY_CONTROL S5P_PMUREG(0x0708)
+#define S5P_USBHOST_PHY_ENABLE (1 << 0)
+
#define S5P_MIPI_DPHY_CONTROL(n) S5P_PMUREG(0x0710 + (n) * 4)
#define S5P_MIPI_DPHY_ENABLE (1 << 0)
#define S5P_MIPI_DPHY_SRESETN (1 << 1)
diff --git a/arch/arm/mach-exynos4/include/mach/regs-usb-phy.h b/arch/arm/mach-exynos4/include/mach/regs-usb-phy.h
new file mode 100644
index 0000000..703118d
--- /dev/null
+++ b/arch/arm/mach-exynos4/include/mach/regs-usb-phy.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __PLAT_S5P_REGS_USB_PHY_H
+#define __PLAT_S5P_REGS_USB_PHY_H
+
+#define EXYNOS4_HSOTG_PHYREG(x) ((x) + S5P_VA_USB_HSPHY)
+
+#define EXYNOS4_PHYPWR EXYNOS4_HSOTG_PHYREG(0x00)
+#define PHY1_HSIC_NORMAL_MASK (0xf << 9)
+#define PHY1_HSIC1_SLEEP (1 << 12)
+#define PHY1_HSIC1_FORCE_SUSPEND (1 << 11)
+#define PHY1_HSIC0_SLEEP (1 << 10)
+#define PHY1_HSIC0_FORCE_SUSPEND (1 << 9)
+
+#define PHY1_STD_NORMAL_MASK (0x7 << 6)
+#define PHY1_STD_SLEEP (1 << 8)
+#define PHY1_STD_ANALOG_POWERDOWN (1 << 7)
+#define PHY1_STD_FORCE_SUSPEND (1 << 6)
+
+#define PHY0_NORMAL_MASK (0x39 << 0)
+#define PHY0_SLEEP (1 << 5)
+#define PHY0_OTG_DISABLE (1 << 4)
+#define PHY0_ANALOG_POWERDOWN (1 << 3)
+#define PHY0_FORCE_SUSPEND (1 << 0)
+
+#define EXYNOS4_PHYCLK EXYNOS4_HSOTG_PHYREG(0x04)
+#define PHY1_COMMON_ON_N (1 << 7)
+#define PHY0_COMMON_ON_N (1 << 4)
+#define PHY0_ID_PULLUP (1 << 2)
+#define CLKSEL_MASK (0x3 << 0)
+#define CLKSEL_SHIFT (0)
+#define CLKSEL_48M (0x0 << 0)
+#define CLKSEL_12M (0x2 << 0)
+#define CLKSEL_24M (0x3 << 0)
+
+#define EXYNOS4_RSTCON EXYNOS4_HSOTG_PHYREG(0x08)
+#define HOST_LINK_PORT_SWRST_MASK (0xf << 6)
+#define HOST_LINK_PORT2_SWRST (1 << 9)
+#define HOST_LINK_PORT1_SWRST (1 << 8)
+#define HOST_LINK_PORT0_SWRST (1 << 7)
+#define HOST_LINK_ALL_SWRST (1 << 6)
+
+#define PHY1_SWRST_MASK (0x7 << 3)
+#define PHY1_HSIC_SWRST (1 << 5)
+#define PHY1_STD_SWRST (1 << 4)
+#define PHY1_ALL_SWRST (1 << 3)
+
+#define PHY0_SWRST_MASK (0x7 << 0)
+#define PHY0_PHYLINK_SWRST (1 << 2)
+#define PHY0_HLINK_SWRST (1 << 1)
+#define PHY0_SWRST (1 << 0)
+
+#define EXYNOS4_PHY1CON EXYNOS4_HSOTG_PHYREG(0x34)
+#define FPENABLEN (1 << 0)
+
+#endif /* __PLAT_S5P_REGS_USB_PHY_H */
diff --git a/arch/arm/mach-exynos4/usb-phy.c b/arch/arm/mach-exynos4/usb-phy.c
new file mode 100644
index 0000000..0883c1b
--- /dev/null
+++ b/arch/arm/mach-exynos4/usb-phy.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <mach/regs-pmu.h>
+#include <mach/regs-usb-phy.h>
+#include <plat/cpu.h>
+#include <plat/usb-phy.h>
+
+static int exynos4_usb_phy1_init(struct platform_device *pdev)
+{
+ struct clk *otg_clk;
+ struct clk *xusbxti_clk;
+ u32 phyclk;
+ u32 rstcon;
+ int err;
+
+ 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);
+ }
+
+ err = clk_enable(otg_clk);
+ if (err) {
+ clk_put(otg_clk);
+ return err;
+ }
+
+ 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);
+
+ /* 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;
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(10);
+
+ rstcon &= ~(HOST_LINK_PORT_SWRST_MASK | PHY1_SWRST_MASK);
+ writel(rstcon, EXYNOS4_RSTCON);
+ udelay(50);
+
+ clk_disable(otg_clk);
+ clk_put(otg_clk);
+
+ return 0;
+}
+
+static int exynos4_usb_phy1_exit(struct platform_device *pdev)
+{
+ struct clk *otg_clk;
+ int err;
+
+ 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);
+ }
+
+ err = clk_enable(otg_clk);
+ if (err) {
+ clk_put(otg_clk);
+ return err;
+ }
+
+ writel((readl(EXYNOS4_PHYPWR) | PHY1_STD_ANALOG_POWERDOWN),
+ EXYNOS4_PHYPWR);
+
+ writel(readl(S5P_USBHOST_PHY_CONTROL) & ~S5P_USBHOST_PHY_ENABLE,
+ S5P_USBHOST_PHY_CONTROL);
+
+ clk_disable(otg_clk);
+ clk_put(otg_clk);
+
+ return 0;
+}
+
+int s5p_usb_phy_init(struct platform_device *pdev, int type)
+{
+ if (type == S5P_USB_PHY_HOST)
+ return exynos4_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);
+
+ return -EINVAL;
+}
diff --git a/arch/arm/plat-s5p/dev-ehci.c b/arch/arm/plat-s5p/dev-ehci.c
index a610e5c..94080ff 100644
--- a/arch/arm/plat-s5p/dev-ehci.c
+++ b/arch/arm/plat-s5p/dev-ehci.c
@@ -45,6 +45,13 @@ struct platform_device s5p_device_ehci = {
void __init s5p_ehci_set_platdata(struct s5p_ehci_platdata *pd)
{
- s3c_set_platdata(pd, sizeof(struct s5p_ehci_platdata),
+ struct s5p_ehci_platdata *npd;
+
+ npd = s3c_set_platdata(pd, sizeof(struct s5p_ehci_platdata),
&s5p_device_ehci);
+
+ if (!npd->phy_init)
+ npd->phy_init = s5p_usb_phy_init;
+ if (!npd->phy_exit)
+ npd->phy_exit = s5p_usb_phy_exit;
}
diff --git a/arch/arm/plat-s5p/include/plat/map-s5p.h b/arch/arm/plat-s5p/include/plat/map-s5p.h
index d973d39..a6c3d32 100644
--- a/arch/arm/plat-s5p/include/plat/map-s5p.h
+++ b/arch/arm/plat-s5p/include/plat/map-s5p.h
@@ -39,7 +39,7 @@
#define S5P_VA_TWD S5P_VA_COREPERI(0x600)
#define S5P_VA_GIC_DIST S5P_VA_COREPERI(0x1000)
-#define S3C_VA_USB_HSPHY S3C_ADDR(0x02900000)
+#define S5P_VA_USB_HSPHY S3C_ADDR(0x02900000)
#define VA_VIC(x) (S3C_VA_IRQ + ((x) * 0x10000))
#define VA_VIC0 VA_VIC(0)
diff --git a/arch/arm/plat-s5p/include/plat/usb-phy.h b/arch/arm/plat-s5p/include/plat/usb-phy.h
new file mode 100644
index 0000000..6dd6bcf
--- /dev/null
+++ b/arch/arm/plat-s5p/include/plat/usb-phy.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2011 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim at samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __PLAT_S5P_USB_PHY_H
+#define __PLAT_S5P_USB_PHY_H
+
+enum s5p_usb_phy_type {
+ S5P_USB_PHY_DEVICE,
+ S5P_USB_PHY_HOST,
+};
+
+extern int s5p_usb_phy_init(struct platform_device *pdev, int type);
+extern int s5p_usb_phy_exit(struct platform_device *pdev, int type);
+
+#endif /* __PLAT_S5P_REGS_USB_PHY_H */
--
1.7.0.4
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