2 * SAMSUNG EXYNOS USB HOST EHCI Controller
4 * Copyright (C) 2012 Samsung Electronics Co.Ltd
5 * Vivek Gautam <gautam.vivek@samsung.com>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
25 #include <asm/arch/cpu.h>
26 #include <asm/arch/ehci.h>
27 #include <asm/arch/system.h>
29 #include "ehci-core.h"
31 /* Setup the EHCI host controller. */
32 static void setup_usb_phy(struct exynos_usb_phy *usb)
34 set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
36 clrbits_le32(&usb->usbphyctrl0,
37 HOST_CTRL0_FSEL_MASK |
38 HOST_CTRL0_COMMONON_N |
39 /* HOST Phy setting */
41 HOST_CTRL0_PHYSWRSTALL |
43 HOST_CTRL0_FORCESUSPEND |
44 HOST_CTRL0_FORCESLEEP);
46 setbits_le32(&usb->usbphyctrl0,
47 /* Setting up the ref freq */
49 /* HOST Phy setting */
50 HOST_CTRL0_LINKSWRST |
51 HOST_CTRL0_UTMISWRST);
53 clrbits_le32(&usb->usbphyctrl0,
54 HOST_CTRL0_LINKSWRST |
55 HOST_CTRL0_UTMISWRST);
58 /* EHCI Ctrl setting */
59 setbits_le32(&usb->ehcictrl,
60 EHCICTRL_ENAINCRXALIGN |
66 /* Reset the EHCI host controller. */
67 static void reset_usb_phy(struct exynos_usb_phy *usb)
70 setbits_le32(&usb->usbphyctrl0,
72 HOST_CTRL0_PHYSWRSTALL |
74 HOST_CTRL0_FORCESUSPEND |
75 HOST_CTRL0_FORCESLEEP);
80 * Create the appropriate control structures to manage
81 * a new EHCI host controller.
83 int ehci_hcd_init(void)
85 struct exynos_usb_phy *usb;
87 usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
90 hccr = (struct ehci_hccr *)samsung_get_base_usb_ehci();
91 hcor = (struct ehci_hcor *)((uint32_t) hccr
92 + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
94 debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n",
95 (uint32_t)hccr, (uint32_t)hcor,
96 (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
102 * Destroy the appropriate control structures corresponding
103 * the EHCI host controller.
107 struct exynos_usb_phy *usb;
109 usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();