This patch adds ehci driver support for EXYNOS.
Signed-off-by: Vivek Gautam <gautam.vi...@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwar...@samsung.com>
---
arch/arm/include/asm/arch-exynos/cpu.h | 3 +
arch/arm/include/asm/arch-exynos/ehci.h | 66 ++++++++++++++++++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-exynos.c | 110 +++++++++++++++++++++++++++++++
4 files changed, 180 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/include/asm/arch-exynos/ehci.h
create mode 100644 drivers/usb/host/ehci-exynos.c
diff --git a/arch/arm/include/asm/arch-exynos/cpu.h
b/arch/arm/include/asm/arch-exynos/cpu.h
index ac4ddc7..85d421d 100644
--- a/arch/arm/include/asm/arch-exynos/cpu.h
+++ b/arch/arm/include/asm/arch-exynos/cpu.h
@@ -45,6 +45,7 @@
#define EXYNOS4_USBOTG_BASE 0x12480000
#define EXYNOS4_MMC_BASE 0x12510000
#define EXYNOS4_SROMC_BASE 0x12570000
+#define EXYNOS4_USB_HOST_EHCI_BASE 0x12580000
#define EXYNOS4_USBPHY_BASE 0x125B0000
#define EXYNOS4_UART_BASE 0x13800000
#define EXYNOS4_ADC_BASE 0x13910000
@@ -68,6 +69,7 @@
#define EXYNOS5_DMC_CTRL_BASE 0x10DD0000
#define EXYNOS5_GPIO_PART1_BASE 0x11400000
#define EXYNOS5_MIPI_DSIM_BASE 0x11D00000
+#define EXYNOS5_USB_HOST_EHCI_BASE 0x12110000
#define EXYNOS5_MMC_BASE 0x12200000
#define EXYNOS5_SROMC_BASE 0x12250000
#define EXYNOS5_USBOTG_BASE 0x12480000
@@ -145,6 +147,7 @@ SAMSUNG_BASE(swreset, SWRESET)
SAMSUNG_BASE(timer, PWMTIMER_BASE)
SAMSUNG_BASE(uart, UART_BASE)
SAMSUNG_BASE(usb_phy, USBPHY_BASE)
+SAMSUNG_BASE(usb_ehci, USB_HOST_EHCI_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/ehci.h
b/arch/arm/include/asm/arch-exynos/ehci.h
new file mode 100644
index 0000000..8aeff8a
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/ehci.h
@@ -0,0 +1,66 @@
+/*
+ * SAMSUNG EXYNOS USB HOST EHCI Controller
+ *
+ * Copyright (C) 2012 Samsung Electronics Co.Ltd
+ * Vivek Gautam <gautam.vi...@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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef __ASM_ARM_ARCH_EHCI_H__
+#define __ASM_ARM_ARCH_EHCI_H__
+
+#define CLK_24MHZ 5
+
+#define HOST_CTRL0_PHYSWRSTALL (1 << 31)
+#define HOST_CTRL0_COMMONON_N (1 << 9)
+#define HOST_CTRL0_SIDDQ (1 << 6)
+#define HOST_CTRL0_FORCESLEEP (1 << 5)
+#define HOST_CTRL0_FORCESUSPEND (1 << 4)
+#define HOST_CTRL0_WORDINTERFACE (1 << 3)
+#define HOST_CTRL0_UTMISWRST (1 << 2)
+#define HOST_CTRL0_LINKSWRST (1 << 1)
+#define HOST_CTRL0_PHYSWRST (1 << 0)
+
+#define HOST_CTRL0_FSEL_MASK (7 << 16)
+
+#define EHCICTRL_ENAINCRXALIGN (1 << 29)
+#define EHCICTRL_ENAINCR4 (1 << 28)
+#define EHCICTRL_ENAINCR8 (1 << 27)
+#define EHCICTRL_ENAINCR16 (1 << 26)
+
+/* Register map for PHY control */
+struct exynos_usb_phy {
+ unsigned int usbphyctrl0;
+ unsigned int usbphytune0;
+ unsigned int reserved1[2];
+ unsigned int hsicphyctrl1;
+ unsigned int hsicphytune1;
+ unsigned int reserved2[2];
+ unsigned int hsicphyctrl2;
+ unsigned int hsicphytune2;
+ unsigned int reserved3[2];
+ unsigned int ehcictrl;
+ unsigned int ohcictrl;
+ unsigned int usbotgsys;
+ unsigned int reserved4;
+ unsigned int usbotgtune;
+};
+
+/* Switch on the VBUS power. */
+int board_usb_vbus_init(void);
+
+#endif /* __ASM_ARM_ARCH_EHCI_H__ */
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 0d4657e..645bb58 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -41,6 +41,7 @@ COBJS-$(CONFIG_USB_EHCI_FSL) += ehci-mpc512x.o
else
COBJS-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o
endif
+COBJS-$(CONFIG_USB_EHCI_EXYNOS) += ehci-exynos.o
COBJS-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o
COBJS-$(CONFIG_USB_EHCI_MXS) += ehci-mxs.o
COBJS-$(CONFIG_USB_EHCI_MX5) += ehci-mx5.o
diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
new file mode 100644
index 0000000..3830c43
--- /dev/null
+++ b/drivers/usb/host/ehci-exynos.c
@@ -0,0 +1,110 @@
+/*
+ * SAMSUNG EXYNOS USB HOST EHCI Controller
+ *
+ * Copyright (C) 2012 Samsung Electronics Co.Ltd
+ * Vivek Gautam <gautam.vi...@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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#include <common.h>
+#include <usb.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/ehci.h>
+#include "ehci.h"
+#include "ehci-core.h"
+
+/* Setup the EHCI host controller. */
+static void setup_usb_phy(struct exynos_usb_phy *usb)
+{
+ clrbits_le32(&usb->usbphyctrl0,
+ HOST_CTRL0_FSEL_MASK |
+ HOST_CTRL0_COMMONON_N |
+ /* HOST Phy setting */
+ HOST_CTRL0_PHYSWRST |
+ HOST_CTRL0_PHYSWRSTALL |
+ HOST_CTRL0_SIDDQ |
+ HOST_CTRL0_FORCESUSPEND |
+ HOST_CTRL0_FORCESLEEP);
+
+ setbits_le32(&usb->usbphyctrl0,
+ /* Setting up the ref freq */
+ (CLK_24MHZ << 16) |
+ /* HOST Phy setting */
+ HOST_CTRL0_LINKSWRST |
+ HOST_CTRL0_UTMISWRST);
+ udelay(10);
+ clrbits_le32(&usb->usbphyctrl0,
+ HOST_CTRL0_LINKSWRST |
+ HOST_CTRL0_UTMISWRST);
+ udelay(20);
+
+ /* EHCI Ctrl setting */
+ setbits_le32(&usb->ehcictrl,
+ EHCICTRL_ENAINCRXALIGN |
+ EHCICTRL_ENAINCR4 |
+ EHCICTRL_ENAINCR8 |
+ EHCICTRL_ENAINCR16);
+}
+
+/* Reset the EHCI host controller. */
+static void reset_usb_phy(struct exynos_usb_phy *usb)
+{
+ /* HOST_PHY reset */
+ setbits_le32(&usb->usbphyctrl0,
+ HOST_CTRL0_PHYSWRST |
+ HOST_CTRL0_PHYSWRSTALL |
+ HOST_CTRL0_SIDDQ |
+ HOST_CTRL0_FORCESUSPEND |
+ HOST_CTRL0_FORCESLEEP);
+}
+
+/*
+ * EHCI-initialization
+ * Create the appropriate control structures to manage
+ * a new EHCI host controller.
+ */
+int ehci_hcd_init(void)
+{
+ struct exynos_usb_phy *usb;
+
+ usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
+ setup_usb_phy(usb);
+
+ hccr = (struct ehci_hccr *)samsung_get_base_usb_ehci();
+ hcor = (struct ehci_hcor *)((uint32_t) hccr
+ + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+
+ debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n",
+ (uint32_t)hccr, (uint32_t)hcor,
+ (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+
+ return 0;
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the EHCI host controller.
+ */
+int ehci_hcd_stop()
+{
+ struct exynos_usb_phy *usb;
+
+ usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
+ reset_usb_phy(usb);
+
+ return 0;
+}
--
1.7.4.4
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