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gerrit.cesnet.cz / github / trini / u-boot / c6d88630158af79f5700c8bbc37972f511e84500 / . / drivers / usb / host / ehci-exynos.c
blob: a71b3977d80f0b5d57633a10574a807cb9e2de9e [file] [log] [blame]
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]1/*
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]2 * SAMSUNG EXYNOS USB HOST EHCI Controller
Rajeshwari Shinde5f0ffea2012-05-02 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 Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]26#include <asm/arch/ehci.h>
Rajeshwari Shinde71045da2012-05-14 05:52:02 +0000[diff] [blame]27#include <asm/arch/system.h>
Rajeshwari Shindec48ac112012-05-14 05:52:03 +0000[diff] [blame]28#include <asm/arch/power.h>
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]29#include "ehci.h"
30#include "ehci-core.h"
31
32/* Setup the EHCI host controller. */
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]33static void setup_usb_phy(struct exynos_usb_phy *usb)
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]34{
Rajeshwari Shinde71045da2012-05-14 05:52:02 +0000[diff] [blame]35 set_usbhost_mode(USB20_PHY_CFG_HOST_LINK_EN);
36
Rajeshwari Shindec48ac112012-05-14 05:52:03 +0000[diff] [blame]37 set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_EN);
38
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]39 clrbits_le32(&usb->usbphyctrl0,
40 HOST_CTRL0_FSEL_MASK |
41 HOST_CTRL0_COMMONON_N |
42 /* HOST Phy setting */
43 HOST_CTRL0_PHYSWRST |
44 HOST_CTRL0_PHYSWRSTALL |
45 HOST_CTRL0_SIDDQ |
46 HOST_CTRL0_FORCESUSPEND |
47 HOST_CTRL0_FORCESLEEP);
48
49 setbits_le32(&usb->usbphyctrl0,
50 /* Setting up the ref freq */
51 (CLK_24MHZ << 16) |
52 /* HOST Phy setting */
53 HOST_CTRL0_LINKSWRST |
54 HOST_CTRL0_UTMISWRST);
55 udelay(10);
56 clrbits_le32(&usb->usbphyctrl0,
57 HOST_CTRL0_LINKSWRST |
58 HOST_CTRL0_UTMISWRST);
59 udelay(20);
60
61 /* EHCI Ctrl setting */
62 setbits_le32(&usb->ehcictrl,
63 EHCICTRL_ENAINCRXALIGN |
64 EHCICTRL_ENAINCR4 |
65 EHCICTRL_ENAINCR8 |
66 EHCICTRL_ENAINCR16);
67}
68
69/* Reset the EHCI host controller. */
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]70static void reset_usb_phy(struct exynos_usb_phy *usb)
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]71{
72 /* HOST_PHY reset */
73 setbits_le32(&usb->usbphyctrl0,
74 HOST_CTRL0_PHYSWRST |
75 HOST_CTRL0_PHYSWRSTALL |
76 HOST_CTRL0_SIDDQ |
77 HOST_CTRL0_FORCESUSPEND |
78 HOST_CTRL0_FORCESLEEP);
Rajeshwari Shindec48ac112012-05-14 05:52:03 +0000[diff] [blame]79
80 set_usbhost_phy_ctrl(POWER_USB_HOST_PHY_CTRL_DISABLE);
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]81}
82
83/*
84 * EHCI-initialization
85 * Create the appropriate control structures to manage
86 * a new EHCI host controller.
87 */
88int ehci_hcd_init(void)
89{
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]90 struct exynos_usb_phy *usb;
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]91
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]92 usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]93 setup_usb_phy(usb);
94
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]95 hccr = (struct ehci_hccr *)samsung_get_base_usb_ehci();
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]96 hcor = (struct ehci_hcor *)((uint32_t) hccr
97 + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
98
99 debug("Exynos5-ehci: init hccr %x and hcor %x hc_length %d\n",
100 (uint32_t)hccr, (uint32_t)hcor,
101 (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
102
103 return 0;
104}
105
106/*
107 * Destroy the appropriate control structures corresponding
108 * the EHCI host controller.
109 */
110int ehci_hcd_stop()
111{
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]112 struct exynos_usb_phy *usb;
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]113
Rajeshwari Shinde7590d3c2012-05-21 16:38:03 +0530[diff] [blame]114 usb = (struct exynos_usb_phy *)samsung_get_base_usb_phy();
Rajeshwari Shinde5f0ffea2012-05-02 19:18:51 +0530[diff] [blame]115 reset_usb_phy(usb);
116
117 return 0;
118}