USB: XHCI: Add xHCI host controller support for Exynos5

This adds driver layer for xHCI controller in Samsung's
exynos5 soc. This interacts with xHCI host controller stack.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Julius Werner <jwerner@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

2 files changed, 96 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-exynos/cpu.h b/arch/arm/include/asm/arch-exynos/cpu.h
index 4b67191c07..b4ef03e8a1 100644
--- a/arch/arm/include/asm/arch-exynos/cpu.h
+++ b/arch/arm/include/asm/arch-exynos/cpu.h
@@ -51,6 +51,8 @@
 #define EXYNOS4_ACE_SFR_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS4_DMC_PHY_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS4_AUDIOSS_BASE		DEVICE_NOT_AVAILABLE
+#define EXYNOS4_USB_HOST_XHCI_BASE	DEVICE_NOT_AVAILABLE
+#define EXYNOS4_USB3PHY_BASE		DEVICE_NOT_AVAILABLE
 
 /* EXYNOS4X12 */
 #define EXYNOS4X12_GPIO_PART3_BASE	0x03860000
@@ -87,6 +89,8 @@
 #define EXYNOS4X12_ACE_SFR_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS4X12_DMC_PHY_BASE		DEVICE_NOT_AVAILABLE
 #define EXYNOS4X12_AUDIOSS_BASE		DEVICE_NOT_AVAILABLE
+#define EXYNOS4X12_USB_HOST_XHCI_BASE	DEVICE_NOT_AVAILABLE
+#define EXYNOS4X12_USB3PHY_BASE		DEVICE_NOT_AVAILABLE
 
 /* EXYNOS5 Common*/
 #define EXYNOS5_I2C_SPACING		0x10000
@@ -106,6 +110,8 @@
 #define EXYNOS5_DMC_CTRL_BASE		0x10DD0000
 #define EXYNOS5_GPIO_PART1_BASE		0x11400000
 #define EXYNOS5_MIPI_DSIM_BASE		0x11D00000
+#define EXYNOS5_USB_HOST_XHCI_BASE	0x12000000
+#define EXYNOS5_USB3PHY_BASE		0x12100000
 #define EXYNOS5_USB_HOST_EHCI_BASE	0x12110000
 #define EXYNOS5_USBPHY_BASE		0x12130000
 #define EXYNOS5_USBOTG_BASE		0x12140000
@@ -220,7 +226,9 @@ SAMSUNG_BASE(swreset, SWRESET)
 SAMSUNG_BASE(timer, PWMTIMER_BASE)
 SAMSUNG_BASE(uart, UART_BASE)
 SAMSUNG_BASE(usb_phy, USBPHY_BASE)
+SAMSUNG_BASE(usb3_phy, USB3PHY_BASE)
 SAMSUNG_BASE(usb_ehci, USB_HOST_EHCI_BASE)
+SAMSUNG_BASE(usb_xhci, USB_HOST_XHCI_BASE)
 SAMSUNG_BASE(usb_otg, USBOTG_BASE)
 SAMSUNG_BASE(watchdog, WATCHDOG_BASE)
 SAMSUNG_BASE(power, POWER_BASE)
diff --git a/arch/arm/include/asm/arch-exynos/xhci-exynos.h b/arch/arm/include/asm/arch-exynos/xhci-exynos.h
new file mode 100644
index 0000000000..92b90a462c
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/xhci-exynos.h
@@ -0,0 +1,88 @@
+/* Copyright (c) 2012 Samsung Electronics Co. Ltd
+ *
+ * Exynos Phy register definitions
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_XHCI_EXYNOS_H_
+#define _ASM_ARCH_XHCI_EXYNOS_H_
+
+/* Phy register MACRO definitions */
+
+#define LINKSYSTEM_FLADJ_MASK			(0x3f << 1)
+#define LINKSYSTEM_FLADJ(_x)			((_x) << 1)
+#define LINKSYSTEM_XHCI_VERSION_CONTROL		(0x1 << 27)
+
+#define PHYUTMI_OTGDISABLE			(1 << 6)
+#define PHYUTMI_FORCESUSPEND			(1 << 1)
+#define PHYUTMI_FORCESLEEP			(1 << 0)
+
+#define PHYCLKRST_SSC_REFCLKSEL_MASK		(0xff << 23)
+#define PHYCLKRST_SSC_REFCLKSEL(_x)		((_x) << 23)
+
+#define PHYCLKRST_SSC_RANGE_MASK		(0x03 << 21)
+#define PHYCLKRST_SSC_RANGE(_x)			((_x) << 21)
+
+#define PHYCLKRST_SSC_EN			(0x1 << 20)
+#define PHYCLKRST_REF_SSP_EN			(0x1 << 19)
+#define PHYCLKRST_REF_CLKDIV2			(0x1 << 18)
+
+#define PHYCLKRST_MPLL_MULTIPLIER_MASK		(0x7f << 11)
+#define PHYCLKRST_MPLL_MULTIPLIER_100MHZ_REF	(0x19 << 11)
+#define PHYCLKRST_MPLL_MULTIPLIER_50M_REF	(0x02 << 11)
+#define PHYCLKRST_MPLL_MULTIPLIER_24MHZ_REF	(0x68 << 11)
+#define PHYCLKRST_MPLL_MULTIPLIER_20MHZ_REF	(0x7d << 11)
+#define PHYCLKRST_MPLL_MULTIPLIER_19200KHZ_REF	(0x02 << 11)
+
+#define PHYCLKRST_FSEL_MASK			(0x3f << 5)
+#define PHYCLKRST_FSEL(_x)			((_x) << 5)
+#define PHYCLKRST_FSEL_PAD_100MHZ		(0x27 << 5)
+#define PHYCLKRST_FSEL_PAD_24MHZ		(0x2a << 5)
+#define PHYCLKRST_FSEL_PAD_20MHZ		(0x31 << 5)
+#define PHYCLKRST_FSEL_PAD_19_2MHZ		(0x38 << 5)
+
+#define PHYCLKRST_RETENABLEN			(0x1 << 4)
+
+#define PHYCLKRST_REFCLKSEL_MASK		(0x03 << 2)
+#define PHYCLKRST_REFCLKSEL_PAD_REFCLK		(0x2 << 2)
+#define PHYCLKRST_REFCLKSEL_EXT_REFCLK		(0x3 << 2)
+
+#define PHYCLKRST_PORTRESET			(0x1 << 1)
+#define PHYCLKRST_COMMONONN			(0x1 << 0)
+
+#define PHYPARAM0_REF_USE_PAD			(0x1 << 31)
+#define PHYPARAM0_REF_LOSLEVEL_MASK		(0x1f << 26)
+#define PHYPARAM0_REF_LOSLEVEL			(0x9 << 26)
+
+#define PHYPARAM1_PCS_TXDEEMPH_MASK		(0x1f << 0)
+#define PHYPARAM1_PCS_TXDEEMPH			(0x1c)
+
+#define PHYTEST_POWERDOWN_SSP			(0x1 << 3)
+#define PHYTEST_POWERDOWN_HSP			(0x1 << 2)
+
+#define PHYBATCHG_UTMI_CLKSEL			(0x1 << 2)
+
+#define FSEL_CLKSEL_24M				(0x5)
+
+/* XHCI PHY register structure */
+struct exynos_usb3_phy {
+	unsigned int reserve1;
+	unsigned int link_system;
+	unsigned int phy_utmi;
+	unsigned int phy_pipe;
+	unsigned int phy_clk_rst;
+	unsigned int phy_reg0;
+	unsigned int phy_reg1;
+	unsigned int phy_param0;
+	unsigned int phy_param1;
+	unsigned int phy_term;
+	unsigned int phy_test;
+	unsigned int phy_adp;
+	unsigned int phy_batchg;
+	unsigned int phy_resume;
+	unsigned int reserve2[3];
+	unsigned int link_port;
+};
+
+#endif /* _ASM_ARCH_XHCI_EXYNOS_H_ */