| /* |
| * SAMSUNG S5P USB HOST EHCI Controller |
| * |
| * Copyright (C) 2012 Samsung Electronics Co.Ltd |
| * Vivek Gautam <gautam.vivek@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/power.h> |
| #include <asm/arch/ehci-s5p.h> |
| #include "ehci.h" |
| |
| int __board_usb_vbus_init(void) |
| { |
| /* placeholder for board specific VBUS initialization */ |
| return 0; |
| } |
| |
| int board_usb_vbus_init(void) |
| __attribute__((weak, alias("__board_usb_vbus_init"))); |
| |
| /* Setup the EHCI host controller. */ |
| static void setup_usb_phy(struct usb_phy *usb) |
| { |
| unsigned int hostphy_ctrl0; |
| |
| /* Enable VBUS */ |
| board_usb_vbus_init(); |
| |
| power_enable_usb_phy(); |
| |
| /* Setting up host and device simultaneously */ |
| hostphy_ctrl0 = readl(&usb->usbphyctrl0); |
| hostphy_ctrl0 &= ~(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); |
| hostphy_ctrl0 |= (/* Setting up the ref freq */ |
| CLK_24MHZ << 16 | |
| /* HOST Phy setting */ |
| HOST_CTRL0_LINKSWRST | |
| HOST_CTRL0_UTMISWRST); |
| writel(hostphy_ctrl0, &usb->usbphyctrl0); |
| 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); |
| |
| /* PHY clock and power setup time */ |
| mdelay(50); |
| } |
| |
| /* Reset the EHCI host controller. */ |
| static void reset_usb_phy(struct 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); |
| |
| power_disable_usb_phy(); |
| } |
| |
| /* |
| * EHCI-initialization |
| * Create the appropriate control structures to manage |
| * a new EHCI host controller. |
| */ |
| int ehci_hcd_init(int index, struct ehci_hccr **ret_hccr, |
| struct ehci_hcor **ret_hcor) |
| { |
| struct usb_phy *usb; |
| struct ehci_hccr *hccr; |
| struct ehci_hcor *hcor; |
| |
| usb = (struct usb_phy *)samsung_get_base_usb_phy(); |
| setup_usb_phy(usb); |
| |
| hccr = (struct ehci_hccr *)(EXYNOS5_USB_HOST_EHCI_BASE); |
| 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))); |
| |
| *ret_hccr = hccr; |
| *ret_hcor = hcor; |
| return 0; |
| } |
| |
| /* |
| * Destroy the appropriate control structures corresponding |
| * the EHCI host controller. |
| */ |
| int ehci_hcd_stop(int index) |
| { |
| struct usb_phy *usb; |
| |
| usb = (struct usb_phy *)samsung_get_base_usb_phy(); |
| reset_usb_phy(usb); |
| |
| return 0; |
| } |