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https://github.com/brain-hackers/u-boot-brain
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bbf4c01efc
Changed musb_config initialization for omap3.c, davinci.c and da8xx.c using name of structure fields. This would cause the uninitialized field to be null by default and thus would help in avoiding to init some flags required to be set only for a few selected platforms. CC: Remy Bohmer <linux@bohmer.net> Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
138 lines
3.4 KiB
C
138 lines
3.4 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 "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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#define OMAP3_OTG_INTERFSEL_OMAP 0x0001
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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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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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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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