157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
/*
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* Copyright (c) 2009 Wind River Systems, Inc.
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* Tom Rix <Tom.Rix@windriver.com>
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*
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* This is file is based on
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* repository git.gitorious.org/u-boot-omap3/mainline.git,
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* branch omap3-dev-usb, file drivers/usb/host/omap3530_usb.c
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*
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* This is the unique part of its copyright :
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*
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* ------------------------------------------------------------------------
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*
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* Copyright (c) 2009 Texas Instruments
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*
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* ------------------------------------------------------------------------
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <twl4030.h>
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#include <twl6030.h>
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#include "omap3.h"
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static int platform_needs_initialization = 1;
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struct musb_config musb_cfg = {
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.regs = (struct musb_regs *)MENTOR_USB0_BASE,
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.timeout = OMAP3_USB_TIMEOUT,
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.musb_speed = 0,
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};
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/*
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* OMAP3 USB OTG registers.
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*/
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struct omap3_otg_regs {
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u32 revision;
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u32 sysconfig;
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u32 sysstatus;
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u32 interfsel;
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u32 simenable;
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u32 forcestdby;
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};
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static struct omap3_otg_regs *otg;
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#define OMAP3_OTG_SYSCONFIG_SMART_STANDBY_MODE 0x2000
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#define OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE 0x1000
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#define OMAP3_OTG_SYSCONFIG_SMART_IDLE_MODE 0x0010
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#define OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE 0x0008
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#define OMAP3_OTG_SYSCONFIG_ENABLEWAKEUP 0x0004
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#define OMAP3_OTG_SYSCONFIG_SOFTRESET 0x0002
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#define OMAP3_OTG_SYSCONFIG_AUTOIDLE 0x0001
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#define OMAP3_OTG_SYSSTATUS_RESETDONE 0x0001
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/* OMAP4430 has an internal PHY, use it */
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#ifdef CONFIG_OMAP4430
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#define OMAP3_OTG_INTERFSEL_OMAP 0x0000
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#else
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#define OMAP3_OTG_INTERFSEL_OMAP 0x0001
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#endif
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#define OMAP3_OTG_FORCESTDBY_STANDBY 0x0001
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#ifdef DEBUG_MUSB_OMAP3
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static void musb_db_otg_regs(void)
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{
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u32 l;
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l = readl(&otg->revision);
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serial_printf("OTG_REVISION 0x%x\n", l);
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l = readl(&otg->sysconfig);
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serial_printf("OTG_SYSCONFIG 0x%x\n", l);
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l = readl(&otg->sysstatus);
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serial_printf("OTG_SYSSTATUS 0x%x\n", l);
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l = readl(&otg->interfsel);
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serial_printf("OTG_INTERFSEL 0x%x\n", l);
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l = readl(&otg->forcestdby);
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serial_printf("OTG_FORCESTDBY 0x%x\n", l);
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}
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#endif
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int musb_platform_init(void)
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{
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int ret = -1;
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if (platform_needs_initialization) {
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u32 stdby;
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/*
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* OMAP3EVM uses ISP1504 phy and so
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* twl4030 related init is not required.
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*/
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#ifdef CONFIG_TWL4030_USB
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if (twl4030_usb_ulpi_init()) {
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serial_printf("ERROR: %s Could not initialize PHY\n",
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__PRETTY_FUNCTION__);
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goto end;
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}
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#endif
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#ifdef CONFIG_TWL6030_POWER
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twl6030_usb_device_settings();
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#endif
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otg = (struct omap3_otg_regs *)OMAP3_OTG_BASE;
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/* Set OTG to always be on */
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writel(OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE |
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OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE, &otg->sysconfig);
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/* Set the interface */
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writel(OMAP3_OTG_INTERFSEL_OMAP, &otg->interfsel);
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/* Clear force standby */
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stdby = readl(&otg->forcestdby);
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stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY;
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writel(stdby, &otg->forcestdby);
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#ifdef CONFIG_OMAP3_EVM
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musb_cfg.extvbus = omap3_evm_need_extvbus();
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#endif
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#ifdef CONFIG_OMAP4430
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u32 *usbotghs_control = (u32 *)(CTRL_BASE + 0x33C);
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*usbotghs_control = 0x15;
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#endif
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platform_needs_initialization = 0;
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}
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ret = platform_needs_initialization;
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#ifdef CONFIG_TWL4030_USB
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end:
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#endif
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return ret;
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}
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void musb_platform_deinit(void)
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{
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/* noop */
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}
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