/*
- * Copyright (C) 2005-2006 by Texas Instruments
+ * Copyright (C) 2005-2007 by Texas Instruments
+ * Some code has been taken from tusb6010.c
+ * Copyrights for that are attributable to:
+ * Copyright (C) 2006 Nokia Corporation
+ * Jarkko Nikula <jarkko.nikula@nokia.com>
+ * Tony Lindgren <tony@atomide.com>
*
* This file is part of the Inventra Controller Driver for Linux.
*
#include <linux/init.h>
#include <linux/list.h>
#include <linux/clk.h>
+#include <linux/io.h>
-#include <asm/io.h>
#include <asm/mach-types.h>
#include <asm/arch/hardware.h>
#include <asm/arch/mux.h>
-#include "musbdefs.h"
+#include "musb_core.h"
#include "omap2430.h"
#ifdef CONFIG_ARCH_OMAP3430
#define get_cpu_rev() 2
#endif
+#define MUSB_TIMEOUT_A_WAIT_BCON 1100
+
+static struct timer_list musb_idle_timer;
+
+static void musb_do_idle(unsigned long _musb)
+{
+ struct musb *musb = (void *)_musb;
+ unsigned long flags;
+ u8 power;
+ u8 devctl;
+
+ devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+
+ 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;
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
+ case OTG_STATE_A_SUSPEND:
+ /* finish RESUME signaling? */
+ if (musb->port1_status & MUSB_PORT_STAT_RESUME) {
+ power = musb_readb(musb->mregs, MUSB_POWER);
+ power &= ~MUSB_POWER_RESUME;
+ DBG(1, "root port resume stopped, power %02x\n", power);
+ musb_writeb(musb->mregs, MUSB_POWER, power);
+ musb->is_active = 1;
+ musb->port1_status &= ~(USB_PORT_STAT_SUSPEND
+ | MUSB_PORT_STAT_RESUME);
+ musb->port1_status |= USB_PORT_STAT_C_SUSPEND << 16;
+ usb_hcd_poll_rh_status(musb_to_hcd(musb));
+ /* NOTE: it might really be A_WAIT_BCON ... */
+ musb->xceiv.state = OTG_STATE_A_HOST;
+ }
+ break;
+#endif
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
+ case OTG_STATE_A_HOST:
+ devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+ if (devctl & MUSB_DEVCTL_BDEVICE)
+ musb->xceiv.state = OTG_STATE_B_IDLE;
+ else
+ musb->xceiv.state = OTG_STATE_A_WAIT_BCON;
+#endif
+ default:
+ break;
+ }
+ spin_unlock_irqrestore(&musb->lock, flags);
+}
+
+
+void musb_platform_try_idle(struct musb *musb, unsigned long timeout)
+{
+ unsigned long default_timeout = jiffies + msecs_to_jiffies(3);
+ static unsigned long last_timer;
+
+ if (timeout == 0)
+ timeout = default_timeout;
+
+ /* 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(&musb_idle_timer);
+ last_timer = jiffies;
+ return;
+ }
+
+ if (time_after(last_timer, timeout)) {
+ if (!timer_pending(&musb_idle_timer))
+ last_timer = timeout;
+ else {
+ DBG(4, "Longer idle timer already pending, ignoring\n");
+ return;
+ }
+ }
+ last_timer = timeout;
+
+ DBG(4, "%s inactive, for idle timer for %lu ms\n",
+ otg_state_string(musb),
+ (unsigned long)jiffies_to_msecs(timeout - jiffies));
+ mod_timer(&musb_idle_timer, timeout);
+}
void musb_platform_enable(struct musb *musb)
{
musb->is_active = 1;
musb->xceiv.default_a = 1;
musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
- devctl |= MGC_M_DEVCTL_SESSION;
+ devctl |= MUSB_DEVCTL_SESSION;
MUSB_HST_MODE(musb);
} else {
musb->xceiv.default_a = 0;
musb->xceiv.state = OTG_STATE_B_IDLE;
- devctl &= ~MGC_M_DEVCTL_SESSION;
+ devctl &= ~MUSB_DEVCTL_SESSION;
MUSB_DEV_MODE(musb);
}
int musb_platform_resume(struct musb *musb);
+void musb_platform_set_mode(struct musb *musb, u8 musb_mode)
+{
+ u8 devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
+
+ devctl |= MUSB_DEVCTL_SESSION;
+ musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
+
+ switch (musb_mode) {
+ case MUSB_HOST:
+ otg_set_host(&musb->xceiv, musb->xceiv.host);
+ break;
+ case MUSB_PERIPHERAL:
+ otg_set_peripheral(&musb->xceiv, musb->xceiv.gadget);
+ break;
+ case MUSB_OTG:
+ break;
+ }
+}
+
int __init musb_platform_init(struct musb *musb)
{
+ struct otg_transceiver *xceiv = otg_get_transceiver();
+
#if defined(CONFIG_ARCH_OMAP2430)
omap_cfg_reg(AE5_2430_USB0HS_STP);
- /* get the clock */
- musb->clock = clk_get((struct device *)musb->controller, "usbhs_ick");
-#else
- musb->clock = clk_get((struct device *)musb->controller, "hsusb_ick");
#endif
- if(IS_ERR(musb->clock))
- return PTR_ERR(musb->clock);
+ musb->xceiv = *xceiv;
musb_platform_resume(musb);
+ OTG_SYSCONFIG_REG &= ~ENABLEWAKEUP; /* disable wakeup */
+ OTG_SYSCONFIG_REG &= ~NOSTDBY; /* remove possible nostdby */
+ OTG_SYSCONFIG_REG |= SMARTSTDBY; /* enable smart standby */
+ OTG_SYSCONFIG_REG &= ~AUTOIDLE; /* disable auto idle */
+ OTG_SYSCONFIG_REG &= ~NOIDLE; /* remove possible noidle */
+ OTG_SYSCONFIG_REG |= SMARTIDLE; /* enable smart idle */
+ OTG_SYSCONFIG_REG |= AUTOIDLE; /* enable auto idle */
+
OTG_INTERFSEL_REG |= ULPI_12PIN;
pr_debug("HS USB OTG: revision 0x%x, sysconfig 0x%02x, "
omap_vbus_power(musb, musb->board_mode == MUSB_HOST, 1);
-
if (is_host_enabled(musb))
musb->board_set_vbus = omap_set_vbus;
if (is_peripheral_enabled(musb))
musb->xceiv.set_power = omap_set_power;
+ musb->a_wait_bcon = MUSB_TIMEOUT_A_WAIT_BCON;
+
+ setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
return 0;
}
int musb_platform_suspend(struct musb *musb)
{
+ if (!musb->clock)
+ return 0;
+
/* in any role */
- OTG_FORCESTDBY_REG &= ~ENABLEFORCE; /* disable MSTANDBY */
- OTG_SYSCONFIG_REG &= FORCESTDBY; /* enable force standby */
- OTG_SYSCONFIG_REG &= ~AUTOIDLE; /* disable auto idle */
- OTG_SYSCONFIG_REG |= SMARTIDLE; /* enable smart idle */
- OTG_FORCESTDBY_REG |= ENABLEFORCE; /* enable MSTANDBY */
- OTG_SYSCONFIG_REG |= AUTOIDLE; /* enable auto idle */
+ OTG_FORCESTDBY_REG |= ENABLEFORCE; /* enable MSTANDBY */
+ OTG_SYSCONFIG_REG |= ENABLEWAKEUP; /* enable wakeup */
+
+ if (musb->xceiv.set_suspend)
+ musb->xceiv.set_suspend(&musb->xceiv, 1);
+
+ if (musb->set_clock)
+ musb->set_clock(musb->clock, 0);
+ else
+ clk_disable(musb->clock);
- clk_disable(musb->clock);
return 0;
}
int musb_platform_resume(struct musb *musb)
{
- clk_enable(musb->clock);
+ if (!musb->clock)
+ return 0;
- OTG_FORCESTDBY_REG &= ~ENABLEFORCE; /* disable MSTANDBY */
- OTG_SYSCONFIG_REG |= SMARTSTDBY; /* enable smart standby */
- OTG_SYSCONFIG_REG &= ~AUTOIDLE; /* disable auto idle */
- OTG_SYSCONFIG_REG |= SMARTIDLE; /* enable smart idle */
- OTG_SYSCONFIG_REG |= AUTOIDLE; /* enable auto idle */
+ if (musb->xceiv.set_suspend)
+ musb->xceiv.set_suspend(&musb->xceiv, 0);
+
+ if (musb->set_clock)
+ musb->set_clock(musb->clock, 1);
+ else
+ clk_enable(musb->clock);
+
+ OTG_SYSCONFIG_REG &= ~ENABLEWAKEUP; /* disable wakeup */
+ OTG_FORCESTDBY_REG &= ~ENABLEFORCE; /* disable MSTANDBY */
return 0;
}
projects / linux-2.6-omap-h63xx.git / blobdiff