Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 1 | /* |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 2 | * SAMSUNG EXYNOS USB HOST EHCI Controller |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2012 Samsung Electronics Co.Ltd |
| 5 | * Vivek Gautam <gautam.vivek@samsung.com> |
| 6 | * |
| 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. |
| 11 | * |
| 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. |
| 16 | * |
| 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, |
| 20 | * MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include <common.h> |
| 24 | #include <usb.h> |
| 25 | #include <asm/arch/cpu.h> |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 26 | #include <asm/arch/ehci.h> |
Rajeshwari Shinde | 8444807 | 2012-05-14 05:52:02 +0000 | [diff] [blame] | 27 | #include <asm/arch/system.h> |
Rajeshwari Shinde | 21965ac | 2012-05-14 05:52:03 +0000 | [diff] [blame] | 28 | #include <asm/arch/power.h> |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 29 | #include "ehci.h" |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 30 | |
| 31 | /* Setup the EHCI host controller. */ |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 32 | static void setup_usb_phy(struct exynos_usb_phy *usb) |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 33 | { |
Rajeshwari Shinde | 8444807 | 2012-05-14 05:52:02 +0000 | [diff] [blame] | 34 | set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN); |
| 35 | |
Rajeshwari Shinde | 21965ac | 2012-05-14 05:52:03 +0000 | [diff] [blame] | 36 | set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN); |
| 37 | |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 38 | clrbits_le32(&usb->usbphyctrl0, |
| 39 | HOST_CTRL0_FSEL_MASK | |
| 40 | HOST_CTRL0_COMMONON_N | |
| 41 | /* HOST Phy setting */ |
| 42 | HOST_CTRL0_PHYSWRST | |
| 43 | HOST_CTRL0_PHYSWRSTALL | |
| 44 | HOST_CTRL0_SIDDQ | |
| 45 | HOST_CTRL0_FORCESUSPEND | |
| 46 | HOST_CTRL0_FORCESLEEP); |
| 47 | |
| 48 | setbits_le32(&usb->usbphyctrl0, |
| 49 | /* Setting up the ref freq */ |
| 50 | (CLK_24MHZ << 16) | |
| 51 | /* HOST Phy setting */ |
| 52 | HOST_CTRL0_LINKSWRST | |
| 53 | HOST_CTRL0_UTMISWRST); |
| 54 | udelay(10); |
| 55 | clrbits_le32(&usb->usbphyctrl0, |
| 56 | HOST_CTRL0_LINKSWRST | |
| 57 | HOST_CTRL0_UTMISWRST); |
| 58 | udelay(20); |
| 59 | |
| 60 | /* EHCI Ctrl setting */ |
| 61 | setbits_le32(&usb->ehcictrl, |
| 62 | EHCICTRL_ENAINCRXALIGN | |
| 63 | EHCICTRL_ENAINCR4 | |
| 64 | EHCICTRL_ENAINCR8 | |
| 65 | EHCICTRL_ENAINCR16); |
| 66 | } |
| 67 | |
| 68 | /* Reset the EHCI host controller. */ |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 69 | static void reset_usb_phy(struct exynos_usb_phy *usb) |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 70 | { |
| 71 | /* HOST_PHY reset */ |
| 72 | setbits_le32(&usb->usbphyctrl0, |
| 73 | HOST_CTRL0_PHYSWRST | |
| 74 | HOST_CTRL0_PHYSWRSTALL | |
| 75 | HOST_CTRL0_SIDDQ | |
| 76 | HOST_CTRL0_FORCESUSPEND | |
| 77 | HOST_CTRL0_FORCESLEEP); |
Rajeshwari Shinde | 21965ac | 2012-05-14 05:52:03 +0000 | [diff] [blame] | 78 | |
| 79 | set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE); |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | /* |
| 83 | * EHCI-initialization |
| 84 | * Create the appropriate control structures to manage |
| 85 | * a new EHCI host controller. |
| 86 | */ |
Lucas Stach | 3494a4c | 2012-09-26 00:14:35 +0200 | [diff] [blame] | 87 | int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor) |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 88 | { |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 89 | struct exynos_usb_phy *usb; |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 90 | |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 91 | usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy(); |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 92 | setup_usb_phy(usb); |
| 93 | |
Lucas Stach | 3494a4c | 2012-09-26 00:14:35 +0200 | [diff] [blame] | 94 | *hccr = (struct ehci_hccr *)samsung_get_base_usb_ehci(); |
| 95 | *hcor = (struct ehci_hcor *)((uint32_t) *hccr |
| 96 | + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 97 | |
| 98 | debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n", |
Lucas Stach | 3494a4c | 2012-09-26 00:14:35 +0200 | [diff] [blame] | 99 | (uint32_t)*hccr, (uint32_t)*hcor, |
| 100 | (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 101 | |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | /* |
| 106 | * Destroy the appropriate control structures corresponding |
| 107 | * the EHCI host controller. |
| 108 | */ |
Lucas Stach | 3494a4c | 2012-09-26 00:14:35 +0200 | [diff] [blame] | 109 | int ehci_hcd_stop(int index) |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 110 | { |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 111 | struct exynos_usb_phy *usb; |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 112 | |
Rajeshwari Shinde | dad39d4 | 2012-05-21 16:38:03 +0530 | [diff] [blame] | 113 | usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy(); |
Rajeshwari Shinde | 9b4ae50 | 2012-05-02 19:18:51 +0530 | [diff] [blame] | 114 | reset_usb_phy(usb); |
| 115 | |
| 116 | return 0; |
| 117 | } |