From patchwork Wed May 12 18:12:11 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Shtylyov X-Patchwork-Id: 99075 Received: from devils.ext.ti.com (devils.ext.ti.com [198.47.26.153]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o4CIDDo1028923 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 12 May 2010 18:13:49 GMT Received: from dlep36.itg.ti.com ([157.170.170.91]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id o4CIDDCB011569 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Wed, 12 May 2010 13:13:13 -0500 Received: from linux.omap.com (localhost [127.0.0.1]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id o4CIDCuh011374 for ; Wed, 12 May 2010 13:13:13 -0500 (CDT) Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id E6B6E80651 for ; Wed, 12 May 2010 13:13:10 -0500 (CDT) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dflp52.itg.ti.com (dflp52.itg.ti.com [128.247.22.96]) by linux.omap.com (Postfix) with ESMTP id F326F80626 for ; Wed, 12 May 2010 13:13:03 -0500 (CDT) Received: from white.ext.ti.com (localhost [127.0.0.1]) by dflp52.itg.ti.com (8.13.7/8.13.7) with ESMTP id o4CID3Te021372 for ; Wed, 12 May 2010 13:13:03 -0500 (CDT) Received: from psmtp.com (na3sys009amx227.postini.com [74.125.149.111]) by white.ext.ti.com (8.13.7/8.13.7) with SMTP id o4CID1o4005018 for ; Wed, 12 May 2010 13:13:01 -0500 Received: from source ([213.79.90.226]) by na3sys009amx227.postini.com ([74.125.148.10]) with SMTP; Wed, 12 May 2010 18:13:01 GMT Received: (qmail 10850 invoked from network); 12 May 2010 18:13:07 -0000 Received: from unknown (HELO wasted.dev.rtsoft.ru) (192.168.1.70) by 0 with SMTP; 12 May 2010 18:13:07 -0000 To: linux-usb@vger.kernel.org Subject: [PATCH RFC v8] MUSB: DA8xx/OMAP-L1x glue layer Content-Disposition: inline From: Sergei Shtylyov Organization: MontaVista Software Inc. Date: Wed, 12 May 2010 22:12:11 +0400 MIME-Version: 1.0 Message-Id: <201005122212.11729.sshtylyov@ru.mvista.com> X-pstn-neptune: 0/0/0.00/0 X-pstn-levels: (S: 2.91367/99.90000 CV:99.9000 FC:95.5390 LC:95.5390 R:95.9108 P:95.9108 M:97.0282 C:98.6951 ) X-pstn-settings: 2 (0.5000:0.5000) s cv gt3 gt2 gt1 r p m c X-pstn-addresses: from [db-null] Cc: davinci-linux-open-source@linux.davincidsp.com X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: davinci-linux-open-source-bounces+patchwork-davinci=patchwork.kernel.org@linux.davincidsp.com Errors-To: davinci-linux-open-source-bounces+patchwork-davinci=patchwork.kernel.org@linux.davincidsp.com X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Wed, 12 May 2010 18:13:49 +0000 (UTC) Index: linux-2.6/drivers/usb/musb/Kconfig =================================================================== --- linux-2.6.orig/drivers/usb/musb/Kconfig +++ linux-2.6/drivers/usb/musb/Kconfig @@ -44,6 +44,9 @@ config USB_MUSB_SOC comment "DaVinci 35x and 644x USB support" depends on USB_MUSB_HDRC && ARCH_DAVINCI_DMx +comment "DA8xx/OMAP-L1x USB support" + depends on USB_MUSB_HDRC && ARCH_DAVINCI_DA8XX + comment "OMAP 243x high speed USB support" depends on USB_MUSB_HDRC && ARCH_OMAP2430 @@ -140,7 +143,7 @@ config USB_MUSB_HDRC_HCD config MUSB_PIO_ONLY bool 'Disable DMA (always use PIO)' depends on USB_MUSB_HDRC - default y if USB_TUSB6010 + default USB_TUSB6010 || ARCH_DAVINCI_DA8XX help All data is copied between memory and FIFO by the CPU. DMA controllers are ignored. Index: linux-2.6/drivers/usb/musb/Makefile =================================================================== --- linux-2.6.orig/drivers/usb/musb/Makefile +++ linux-2.6/drivers/usb/musb/Makefile @@ -10,6 +10,10 @@ ifeq ($(CONFIG_ARCH_DAVINCI_DMx),y) musb_hdrc-objs += davinci.o endif +ifeq ($(CONFIG_ARCH_DAVINCI_DA8XX),y) + musb_hdrc-objs += da8xx.o +endif + ifeq ($(CONFIG_USB_TUSB6010),y) musb_hdrc-objs += tusb6010.o endif Index: linux-2.6/drivers/usb/musb/da8xx.c =================================================================== --- /dev/null +++ linux-2.6/drivers/usb/musb/da8xx.c @@ -0,0 +1,492 @@ +/* + * Texas Instruments DA8xx/OMAP-L1x "glue layer" + * + * Copyright (c) 2008-2009 MontaVista Software, Inc. + * + * Based on the DaVinci "glue layer" code. + * Copyright (C) 2005-2006 by Texas Instruments + * + * This file is part of the Inventra Controller Driver for Linux. + * + * The Inventra Controller Driver for Linux is free software; you + * can redistribute it and/or modify it under the terms of the GNU + * General Public License version 2 as published by the Free Software + * Foundation. + * + * The Inventra Controller Driver for Linux is distributed in + * the hope that it will be useful, but WITHOUT ANY WARRANTY; + * without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + * License for more details. + * + * You should have received a copy of the GNU General Public License + * along with The Inventra Controller Driver for Linux ; if not, + * write to the Free Software Foundation, Inc., 59 Temple Place, + * Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include + +#include +#include + +#include "musb_core.h" + +/* + * DA8XX specific definitions + */ + +/* USB 2.0 OTG module registers */ +#define DA8XX_USB_REVISION_REG 0x00 +#define DA8XX_USB_CTRL_REG 0x04 +#define DA8XX_USB_STAT_REG 0x08 +#define DA8XX_USB_EMULATION_REG 0x0c +#define DA8XX_USB_MODE_REG 0x10 /* Transparent, CDC, [Generic] RNDIS */ +#define DA8XX_USB_AUTOREQ_REG 0x14 +#define DA8XX_USB_SRP_FIX_TIME_REG 0x18 +#define DA8XX_USB_TEARDOWN_REG 0x1c +#define DA8XX_USB_INTR_SRC_REG 0x20 +#define DA8XX_USB_INTR_SRC_SET_REG 0x24 +#define DA8XX_USB_INTR_SRC_CLEAR_REG 0x28 +#define DA8XX_USB_INTR_MASK_REG 0x2c +#define DA8XX_USB_INTR_MASK_SET_REG 0x30 +#define DA8XX_USB_INTR_MASK_CLEAR_REG 0x34 +#define DA8XX_USB_INTR_SRC_MASKED_REG 0x38 +#define DA8XX_USB_END_OF_INTR_REG 0x3c +#define DA8XX_USB_GENERIC_RNDIS_EP_SIZE_REG(n) (0x50 + (((n) - 1) << 2)) + +/* Control register bits */ +#define DA8XX_SOFT_RESET_MASK 1 + +#define DA8XX_USB_TX_EP_MASK 0x1f /* EP0 + 4 Tx EPs */ +#define DA8XX_USB_RX_EP_MASK 0x1e /* 4 Rx EPs */ + +/* USB interrupt register bits */ +#define DA8XX_INTR_USB_SHIFT 16 +#define DA8XX_INTR_USB_MASK (0x1ff << DA8XX_INTR_USB_SHIFT) /* 8 Mentor */ + /* interrupts and DRVVBUS interrupt */ +#define DA8XX_INTR_DRVVBUS 0x100 +#define DA8XX_INTR_RX_SHIFT 8 +#define DA8XX_INTR_RX_MASK (DA8XX_USB_RX_EP_MASK << DA8XX_INTR_RX_SHIFT) +#define DA8XX_INTR_TX_SHIFT 0 +#define DA8XX_INTR_TX_MASK (DA8XX_USB_TX_EP_MASK << DA8XX_INTR_TX_SHIFT) + +#define DA8XX_MENTOR_CORE_OFFSET 0x400 + +#define CFGCHIP2 IO_ADDRESS(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG) + +/* + * REVISIT (PM): we should be able to keep the PHY in low power mode most + * of the time (24 MHz oscillator and PLL off, etc.) by setting POWER.D0 + * and, when in host mode, autosuspending idle root ports... PHY_PLLON + * (overriding SUSPENDM?) then likely needs to stay off. + */ + +static inline void phy_on(void) +{ + u32 cfgchip2 = __raw_readl(CFGCHIP2); + + /* + * Start the on-chip PHY and its PLL. + */ + cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN); + cfgchip2 |= CFGCHIP2_PHY_PLLON; + __raw_writel(cfgchip2, CFGCHIP2); + + pr_info("Waiting for USB PHY clock good...\n"); + while (!(__raw_readl(CFGCHIP2) & CFGCHIP2_PHYCLKGD)) + cpu_relax(); +} + +static inline void phy_off(void) +{ + u32 cfgchip2 = __raw_readl(CFGCHIP2); + + /* + * Ensure that USB 1.1 reference clock is not being sourced from + * USB 2.0 PHY. Otherwise do not power down the PHY. + */ + if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX) && + (cfgchip2 & CFGCHIP2_USB1SUSPENDM)) { + pr_warning("USB 1.1 clocked from USB 2.0 PHY -- " + "can't power it down\n"); + return; + } + + /* + * Power down the on-chip PHY. + */ + cfgchip2 |= CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN; + __raw_writel(cfgchip2, CFGCHIP2); +} + +/* + * Because we don't set CTRL.UINT, it's "important" to: + * - not read/write INTRUSB/INTRUSBE (except during + * initial setup, as a workaround); + * - use INTSET/INTCLR instead. + */ + +/** + * musb_platform_enable - enable interrupts + */ +void musb_platform_enable(struct musb *musb) +{ + void __iomem *reg_base = musb->ctrl_base; + u32 mask; + + /* Workaround: setup IRQs through both register sets. */ + mask = ((musb->epmask & DA8XX_USB_TX_EP_MASK) << DA8XX_INTR_TX_SHIFT) | + ((musb->epmask & DA8XX_USB_RX_EP_MASK) << DA8XX_INTR_RX_SHIFT) | + DA8XX_INTR_USB_MASK; + musb_writel(reg_base, DA8XX_USB_INTR_MASK_SET_REG, mask); + + /* Force the DRVVBUS IRQ so we can start polling for ID change. */ + if (is_otg_enabled(musb)) + musb_writel(reg_base, DA8XX_USB_INTR_SRC_SET_REG, + DA8XX_INTR_DRVVBUS << DA8XX_INTR_USB_SHIFT); +} + +/** + * musb_platform_disable - disable HDRC and flush interrupts + */ +void musb_platform_disable(struct musb *musb) +{ + void __iomem *reg_base = musb->ctrl_base; + + musb_writel(reg_base, DA8XX_USB_INTR_MASK_CLEAR_REG, + DA8XX_INTR_USB_MASK | + DA8XX_INTR_TX_MASK | DA8XX_INTR_RX_MASK); + musb_writeb(musb->mregs, MUSB_DEVCTL, 0); + musb_writel(reg_base, DA8XX_USB_END_OF_INTR_REG, 0); +} + +#ifdef CONFIG_USB_MUSB_HDRC_HCD +#define portstate(stmt) stmt +#else +#define portstate(stmt) +#endif + +static void da8xx_set_vbus(struct musb *musb, int is_on) +{ + WARN_ON(is_on && is_peripheral_active(musb)); +} + +#define POLL_SECONDS 2 + +static struct timer_list otg_workaround; + +static void otg_timer(unsigned long _musb) +{ + struct musb *musb = (void *)_musb; + void __iomem *mregs = musb->mregs; + u8 devctl; + unsigned long flags; + + /* + * We poll because DaVinci's won't expose several OTG-critical + * status change events (from the transceiver) otherwise. + */ + devctl = musb_readb(mregs, MUSB_DEVCTL); + DBG(7, "Poll devctl %02x (%s)\n", devctl, otg_state_string(musb)); + + spin_lock_irqsave(&musb->lock, flags); + switch (musb->xceiv->state) { + case OTG_STATE_A_WAIT_BCON: + devctl &= ~MUSB_DEVCTL_SESSION; + musb_writeb(musb->mregs, MUSB_DEVCTL, devctl); + + devctl = musb_readb(musb->mregs, MUSB_DEVCTL); + if (devctl & MUSB_DEVCTL_BDEVICE) { + musb->xceiv->state = OTG_STATE_B_IDLE; + MUSB_DEV_MODE(musb); + } else { + musb->xceiv->state = OTG_STATE_A_IDLE; + MUSB_HST_MODE(musb); + } + break; + case OTG_STATE_A_WAIT_VFALL: + /* + * Wait till VBUS falls below SessionEnd (~0.2 V); the 1.3 + * RTL seems to mis-handle session "start" otherwise (or in + * our case "recover"), in routine "VBUS was valid by the time + * VBUSERR got reported during enumeration" cases. + */ + if (devctl & MUSB_DEVCTL_VBUS) { + mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); + break; + } + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; + musb_writel(musb->ctrl_base, DA8XX_USB_INTR_SRC_SET_REG, + MUSB_INTR_VBUSERROR << DA8XX_INTR_USB_SHIFT); + break; + case OTG_STATE_B_IDLE: + if (!is_peripheral_enabled(musb)) + break; + + /* + * There's no ID-changed IRQ, so we have no good way to tell + * when to switch to the A-Default state machine (by setting + * the DEVCTL.Session bit). + * + * Workaround: whenever we're in B_IDLE, try setting the + * session flag every few seconds. If it works, ID was + * grounded and we're now in the A-Default state machine. + * + * NOTE: setting the session flag is _supposed_ to trigger + * SRP but clearly it doesn't. + */ + musb_writeb(mregs, MUSB_DEVCTL, devctl | MUSB_DEVCTL_SESSION); + devctl = musb_readb(mregs, MUSB_DEVCTL); + if (devctl & MUSB_DEVCTL_BDEVICE) + mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); + else + musb->xceiv->state = OTG_STATE_A_IDLE; + break; + default: + break; + } + spin_unlock_irqrestore(&musb->lock, flags); +} + +void musb_platform_try_idle(struct musb *musb, unsigned long timeout) +{ + static unsigned long last_timer; + + if (!is_otg_enabled(musb)) + return; + + if (timeout == 0) + timeout = jiffies + msecs_to_jiffies(3); + + /* Never idle if active, or when VBUS timeout is not set as host */ + if (musb->is_active || (musb->a_wait_bcon == 0 && + musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) { + DBG(4, "%s active, deleting timer\n", otg_state_string(musb)); + del_timer(&otg_workaround); + last_timer = jiffies; + return; + } + + if (time_after(last_timer, timeout) && timer_pending(&otg_workaround)) { + DBG(4, "Longer idle timer already pending, ignoring...\n"); + return; + } + last_timer = timeout; + + DBG(4, "%s inactive, starting idle timer for %u ms\n", + otg_state_string(musb), jiffies_to_msecs(timeout - jiffies)); + mod_timer(&otg_workaround, timeout); +} + +static irqreturn_t da8xx_interrupt(int irq, void *hci) +{ + struct musb *musb = hci; + void __iomem *reg_base = musb->ctrl_base; + unsigned long flags; + irqreturn_t ret = IRQ_NONE; + u32 status; + + spin_lock_irqsave(&musb->lock, flags); + + /* + * NOTE: DA8XX shadows the Mentor IRQs. Don't manage them through + * the Mentor registers (except for setup), use the TI ones and EOI. + */ + + /* Acknowledge and handle non-CPPI interrupts */ + status = musb_readl(reg_base, DA8XX_USB_INTR_SRC_MASKED_REG); + if (!status) + goto eoi; + + musb_writel(reg_base, DA8XX_USB_INTR_SRC_CLEAR_REG, status); + DBG(4, "USB IRQ %08x\n", status); + + musb->int_rx = (status & DA8XX_INTR_RX_MASK) >> DA8XX_INTR_RX_SHIFT; + musb->int_tx = (status & DA8XX_INTR_TX_MASK) >> DA8XX_INTR_TX_SHIFT; + musb->int_usb = (status & DA8XX_INTR_USB_MASK) >> DA8XX_INTR_USB_SHIFT; + + /* + * DRVVBUS IRQs are the only proxy we have (a very poor one!) for + * DA8xx's missing ID change IRQ. We need an ID change IRQ to + * switch appropriately between halves of the OTG state machine. + * Managing DEVCTL.Session per Mentor docs requires that we know its + * value but DEVCTL.BDevice is invalid without DEVCTL.Session set. + * Also, DRVVBUS pulses for SRP (but not at 5 V)... + */ + if (status & (DA8XX_INTR_DRVVBUS << DA8XX_INTR_USB_SHIFT)) { + int drvvbus = musb_readl(reg_base, DA8XX_USB_STAT_REG); + void __iomem *mregs = musb->mregs; + u8 devctl = musb_readb(mregs, MUSB_DEVCTL); + int err; + + err = is_host_enabled(musb) && (musb->int_usb & + MUSB_INTR_VBUSERROR); + if (err) { + /* + * The Mentor core doesn't debounce VBUS as needed + * to cope with device connect current spikes. This + * means it's not uncommon for bus-powered devices + * to get VBUS errors during enumeration. + * + * This is a workaround, but newer RTL from Mentor + * seems to allow a better one: "re"-starting sessions + * without waiting for VBUS to stop registering in + * devctl. + */ + musb->int_usb &= ~MUSB_INTR_VBUSERROR; + musb->xceiv->state = OTG_STATE_A_WAIT_VFALL; + mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); + WARNING("VBUS error workaround (delay coming)\n"); + } else if (is_host_enabled(musb) && drvvbus) { + MUSB_HST_MODE(musb); + musb->xceiv->default_a = 1; + musb->xceiv->state = OTG_STATE_A_WAIT_VRISE; + portstate(musb->port1_status |= USB_PORT_STAT_POWER); + del_timer(&otg_workaround); + } else { + musb->is_active = 0; + MUSB_DEV_MODE(musb); + musb->xceiv->default_a = 0; + musb->xceiv->state = OTG_STATE_B_IDLE; + portstate(musb->port1_status &= ~USB_PORT_STAT_POWER); + } + + DBG(2, "VBUS %s (%s)%s, devctl %02x\n", + drvvbus ? "on" : "off", + otg_state_string(musb), + err ? " ERROR" : "", + devctl); + ret = IRQ_HANDLED; + } + + if (musb->int_tx || musb->int_rx || musb->int_usb) + ret |= musb_interrupt(musb); + + eoi: + /* EOI needs to be written for the IRQ to be re-asserted. */ + if (ret == IRQ_HANDLED || status) + musb_writel(reg_base, DA8XX_USB_END_OF_INTR_REG, 0); + + /* Poll for ID change */ + if (is_otg_enabled(musb) && musb->xceiv->state == OTG_STATE_B_IDLE) + mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ); + + spin_unlock_irqrestore(&musb->lock, flags); + + return ret; +} + +int musb_platform_set_mode(struct musb *musb, u8 musb_mode) +{ + u32 cfgchip2 = __raw_readl(CFGCHIP2); + + cfgchip2 &= ~CFGCHIP2_OTGMODE; + switch (musb_mode) { +#ifdef CONFIG_USB_MUSB_HDRC_HCD + case MUSB_HOST: /* Force VBUS valid, ID = 0 */ + cfgchip2 |= CFGCHIP2_FORCE_HOST; + break; +#endif +#ifdef CONFIG_USB_GADGET_MUSB_HDRC + case MUSB_PERIPHERAL: /* Force VBUS valid, ID = 1 */ + cfgchip2 |= CFGCHIP2_FORCE_DEVICE; + break; +#endif +#ifdef CONFIG_USB_MUSB_OTG + case MUSB_OTG: /* Don't override the VBUS/ID comparators */ + cfgchip2 |= CFGCHIP2_NO_OVERRIDE; + break; +#endif + default: + DBG(2, "Trying to set unsupported mode %u\n", musb_mode); + } + + __raw_writel(cfgchip2, CFGCHIP2); + return 0; +} + +int __init musb_platform_init(struct musb *musb) +{ + void __iomem *reg_base = musb->ctrl_base; + u32 rev; + + musb->mregs += DA8XX_MENTOR_CORE_OFFSET; + + clk_enable(musb->clock); + + /* Returns zero if e.g. not clocked */ + rev = musb_readl(reg_base, DA8XX_USB_REVISION_REG); + if (!rev) { + clk_disable(musb->clock); + return -ENODEV; + } + + usb_nop_xceiv_register(); + musb->xceiv = otg_get_transceiver(); + if (!musb->xceiv) + return -ENODEV; + + if (is_host_enabled(musb)) + setup_timer(&otg_workaround, otg_timer, (unsigned long)musb); + + musb->board_set_vbus = da8xx_set_vbus; + + /* Reset the controller */ + musb_writel(reg_base, DA8XX_USB_CTRL_REG, DA8XX_SOFT_RESET_MASK); + + /* Start the on-chip PHY and its PLL. */ + phy_on(); + + msleep(5); + + /* NOTE: IRQs are in mixed mode, not bypass to pure MUSB */ + pr_debug("DA8xx OTG revision %08x, PHY %03x, control %02x\n", + rev, __raw_readl(CFGCHIP2), + musb_readb(reg_base, DA8XX_USB_CTRL_REG)); + + musb->isr = da8xx_interrupt; + return 0; +} + +int musb_platform_exit(struct musb *musb) +{ + if (is_host_enabled(musb)) + del_timer_sync(&otg_workaround); + + /* Delay to avoid problems with module reload... */ + if (is_host_enabled(musb) && musb->xceiv->default_a) { + u8 devctl, warn = 0; + int delay; + + /* + * If there's no peripheral connected, VBUS can take a + * long time to fall... + */ + for (delay = 30; delay > 0; delay--) { + devctl = musb_readb(musb->mregs, MUSB_DEVCTL); + if (!(devctl & MUSB_DEVCTL_VBUS)) + goto done; + if ((devctl & MUSB_DEVCTL_VBUS) != warn) { + warn = devctl & MUSB_DEVCTL_VBUS; + DBG(1, "VBUS %d\n", + warn >> MUSB_DEVCTL_VBUS_SHIFT); + } + msleep(1000); + } + + /* In OTG mode, another host might be connected... */ + DBG(1, "VBUS off timeout (devctl %02x)\n", devctl); + } +done: + phy_off(); + + usb_nop_xceiv_unregister(); + + clk_disable(musb->clock); + + return 0; +} Index: linux-2.6/drivers/usb/musb/musb_core.h =================================================================== --- linux-2.6.orig/drivers/usb/musb/musb_core.h +++ linux-2.6/drivers/usb/musb/musb_core.h @@ -596,6 +596,7 @@ extern void musb_hnp_stop(struct musb *m extern int musb_platform_set_mode(struct musb *musb, u8 musb_mode); #if defined(CONFIG_USB_TUSB6010) || defined(CONFIG_BLACKFIN) || \ + defined(CONFIG_ARCH_DAVINCI_DA8XX) || \ defined(CONFIG_ARCH_OMAP2430) || defined(CONFIG_ARCH_OMAP3) extern void musb_platform_try_idle(struct musb *musb, unsigned long timeout); #else