musb: proper hookup to transceiver drivers
Let the otg_transceiver in MUSB be managed by an external driver;
don't assume it's integrated. OMAP3 chips need it to be external,
and there may be ways to interact with the transceiver which add
functionality to the system.
Platform init code is responsible for setting up the transeciver,
probably using the NOP transceiver for integrated transceivers.
External ones will use whatever the board init code provided,
such as twl4030 or something more hands-off.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
index b66e8544..70073b1 100644
--- a/drivers/usb/musb/Kconfig
+++ b/drivers/usb/musb/Kconfig
@@ -10,6 +10,7 @@
config USB_MUSB_HDRC
depends on (USB || USB_GADGET) && HAVE_CLK
depends on !SUPERH
+ select NOP_USB_XCEIV if ARCH_DAVINCI
select TWL4030_USB if MACH_OMAP_3430SDP
select USB_OTG_UTILS
tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)'
@@ -55,6 +56,7 @@
config USB_TUSB6010
boolean "TUSB 6010 support"
depends on USB_MUSB_HDRC && !USB_MUSB_SOC
+ select NOP_USB_XCEIV
default y
help
The TUSB 6010 chip, from Texas Instruments, connects a discrete
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index 7861348..f2f66eb 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -143,7 +143,7 @@
u16 val;
spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_IDLE:
case OTG_STATE_A_WAIT_BCON:
/* Start a new session */
@@ -154,7 +154,7 @@
val = musb_readw(musb->mregs, MUSB_DEVCTL);
if (!(val & MUSB_DEVCTL_BDEVICE)) {
gpio_set_value(musb->config->gpio_vrsel, 1);
- musb->xceiv.state = OTG_STATE_A_WAIT_BCON;
+ musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
} else {
gpio_set_value(musb->config->gpio_vrsel, 0);
@@ -247,6 +247,11 @@
}
gpio_direction_output(musb->config->gpio_vrsel, 0);
+ usb_nop_xceiv_register();
+ musb->xceiv = otg_get_transceiver();
+ if (!musb->xceiv)
+ return -ENODEV;
+
if (ANOMALY_05000346) {
bfin_write_USB_APHY_CALIB(ANOMALY_05000346_value);
SSYNC();
@@ -291,7 +296,7 @@
musb_conn_timer_handler, (unsigned long) musb);
}
if (is_peripheral_enabled(musb))
- musb->xceiv.set_power = bfin_set_power;
+ musb->xceiv->set_power = bfin_set_power;
musb->isr = blackfin_interrupt;
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index 6e14e06..180d7da 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -215,7 +215,7 @@
DBG(7, "poll devctl %02x (%s)\n", devctl, otg_state_string(musb));
spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_WAIT_VFALL:
/* Wait till VBUS falls below SessionEnd (~0.2V); the 1.3 RTL
* seems to mis-handle session "start" otherwise (or in our
@@ -226,7 +226,7 @@
mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
break;
}
- musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
+ musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
musb_writel(musb->ctrl_base, DAVINCI_USB_INT_SET_REG,
MUSB_INTR_VBUSERROR << DAVINCI_USB_USBINT_SHIFT);
break;
@@ -251,7 +251,7 @@
if (devctl & MUSB_DEVCTL_BDEVICE)
mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
else
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
break;
default:
break;
@@ -325,21 +325,21 @@
* to stop registering in devctl.
*/
musb->int_usb &= ~MUSB_INTR_VBUSERROR;
- musb->xceiv.state = OTG_STATE_A_WAIT_VFALL;
+ 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->is_active = 1;
MUSB_HST_MODE(musb);
- musb->xceiv.default_a = 1;
- musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
+ 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;
+ musb->xceiv->default_a = 0;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
portstate(musb->port1_status &= ~USB_PORT_STAT_POWER);
}
@@ -361,7 +361,7 @@
/* poll for ID change */
if (is_otg_enabled(musb)
- && musb->xceiv.state == OTG_STATE_B_IDLE)
+ && musb->xceiv->state == OTG_STATE_B_IDLE)
mod_timer(&otg_workaround, jiffies + POLL_SECONDS * HZ);
spin_unlock_irqrestore(&musb->lock, flags);
@@ -380,6 +380,11 @@
void __iomem *tibase = musb->ctrl_base;
u32 revision;
+ usb_nop_xceiv_register();
+ musb->xceiv = otg_get_transceiver();
+ if (!musb->xceiv)
+ return -ENODEV;
+
musb->mregs += DAVINCI_BASE_OFFSET;
clk_enable(musb->clock);
@@ -387,7 +392,7 @@
/* returns zero if e.g. not clocked */
revision = musb_readl(tibase, DAVINCI_USB_VERSION_REG);
if (revision == 0)
- return -ENODEV;
+ goto fail;
if (is_host_enabled(musb))
setup_timer(&otg_workaround, otg_timer, (unsigned long) musb);
@@ -421,6 +426,10 @@
musb->isr = davinci_interrupt;
return 0;
+
+fail:
+ usb_nop_xceiv_unregister();
+ return -ENODEV;
}
int musb_platform_exit(struct musb *musb)
@@ -431,7 +440,7 @@
davinci_source_power(musb, 0 /*off*/, 1);
/* delay, to avoid problems with module reload */
- if (is_host_enabled(musb) && musb->xceiv.default_a) {
+ if (is_host_enabled(musb) && musb->xceiv->default_a) {
int maxdelay = 30;
u8 devctl, warn = 0;
@@ -460,5 +469,7 @@
clk_disable(musb->clock);
+ usb_nop_xceiv_unregister();
+
return 0;
}
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 324459b..2460c39 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -267,7 +267,7 @@
const char *otg_state_string(struct musb *musb)
{
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_IDLE: return "a_idle";
case OTG_STATE_A_WAIT_VRISE: return "a_wait_vrise";
case OTG_STATE_A_WAIT_BCON: return "a_wait_bcon";
@@ -302,11 +302,11 @@
unsigned long flags;
spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_B_WAIT_ACON:
DBG(1, "HNP: b_wait_acon timeout; back to b_peripheral\n");
musb_g_disconnect(musb);
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb->is_active = 0;
break;
case OTG_STATE_A_WAIT_BCON:
@@ -331,20 +331,20 @@
void __iomem *mbase = musb->mregs;
u8 reg;
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_PERIPHERAL:
case OTG_STATE_A_WAIT_VFALL:
case OTG_STATE_A_WAIT_BCON:
DBG(1, "HNP: Switching back to A-host\n");
musb_g_disconnect(musb);
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
MUSB_HST_MODE(musb);
musb->is_active = 0;
break;
case OTG_STATE_B_HOST:
DBG(1, "HNP: Disabling HR\n");
hcd->self.is_b_host = 0;
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
MUSB_DEV_MODE(musb);
reg = musb_readb(mbase, MUSB_POWER);
reg |= MUSB_POWER_SUSPENDM;
@@ -402,7 +402,7 @@
if (devctl & MUSB_DEVCTL_HM) {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_SUSPEND:
/* remote wakeup? later, GetPortStatus
* will stop RESUME signaling
@@ -425,12 +425,12 @@
musb->rh_timer = jiffies
+ msecs_to_jiffies(20);
- musb->xceiv.state = OTG_STATE_A_HOST;
+ musb->xceiv->state = OTG_STATE_A_HOST;
musb->is_active = 1;
usb_hcd_resume_root_hub(musb_to_hcd(musb));
break;
case OTG_STATE_B_WAIT_ACON:
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb->is_active = 1;
MUSB_DEV_MODE(musb);
break;
@@ -441,11 +441,11 @@
}
#endif
} else {
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
case OTG_STATE_A_SUSPEND:
/* possibly DISCONNECT is upcoming */
- musb->xceiv.state = OTG_STATE_A_HOST;
+ musb->xceiv->state = OTG_STATE_A_HOST;
usb_hcd_resume_root_hub(musb_to_hcd(musb));
break;
#endif
@@ -490,7 +490,7 @@
*/
musb_writeb(mbase, MUSB_DEVCTL, MUSB_DEVCTL_SESSION);
musb->ep0_stage = MUSB_EP0_START;
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
MUSB_HST_MODE(musb);
musb_set_vbus(musb, 1);
@@ -516,7 +516,7 @@
* REVISIT: do delays from lots of DEBUG_KERNEL checks
* make trouble here, keeping VBUS < 4.4V ?
*/
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_HOST:
/* recovery is dicey once we've gotten past the
* initial stages of enumeration, but if VBUS
@@ -602,11 +602,11 @@
MUSB_HST_MODE(musb);
/* indicate new connection to OTG machine */
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_B_PERIPHERAL:
if (int_usb & MUSB_INTR_SUSPEND) {
DBG(1, "HNP: SUSPEND+CONNECT, now b_host\n");
- musb->xceiv.state = OTG_STATE_B_HOST;
+ musb->xceiv->state = OTG_STATE_B_HOST;
hcd->self.is_b_host = 1;
int_usb &= ~MUSB_INTR_SUSPEND;
} else
@@ -614,13 +614,13 @@
break;
case OTG_STATE_B_WAIT_ACON:
DBG(1, "HNP: Waiting to switch to b_host state\n");
- musb->xceiv.state = OTG_STATE_B_HOST;
+ musb->xceiv->state = OTG_STATE_B_HOST;
hcd->self.is_b_host = 1;
break;
default:
if ((devctl & MUSB_DEVCTL_VBUS)
== (3 << MUSB_DEVCTL_VBUS_SHIFT)) {
- musb->xceiv.state = OTG_STATE_A_HOST;
+ musb->xceiv->state = OTG_STATE_A_HOST;
hcd->self.is_b_host = 0;
}
break;
@@ -650,7 +650,7 @@
}
} else if (is_peripheral_capable()) {
DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
#ifdef CONFIG_USB_OTG
case OTG_STATE_A_SUSPEND:
/* We need to ignore disconnect on suspend
@@ -673,12 +673,12 @@
case OTG_STATE_B_WAIT_ACON:
DBG(1, "HNP: RESET (%s), to b_peripheral\n",
otg_state_string(musb));
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb_g_reset(musb);
break;
#endif
case OTG_STATE_B_IDLE:
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
/* FALLTHROUGH */
case OTG_STATE_B_PERIPHERAL:
musb_g_reset(musb);
@@ -763,7 +763,7 @@
MUSB_MODE(musb), devctl);
handled = IRQ_HANDLED;
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
case OTG_STATE_A_HOST:
case OTG_STATE_A_SUSPEND:
@@ -805,7 +805,7 @@
otg_state_string(musb), devctl, power);
handled = IRQ_HANDLED;
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
#ifdef CONFIG_USB_MUSB_OTG
case OTG_STATE_A_PERIPHERAL:
/*
@@ -817,10 +817,10 @@
case OTG_STATE_B_PERIPHERAL:
musb_g_suspend(musb);
musb->is_active = is_otg_enabled(musb)
- && musb->xceiv.gadget->b_hnp_enable;
+ && musb->xceiv->gadget->b_hnp_enable;
if (musb->is_active) {
#ifdef CONFIG_USB_MUSB_OTG
- musb->xceiv.state = OTG_STATE_B_WAIT_ACON;
+ musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
DBG(1, "HNP: Setting timer for b_ase0_brst\n");
musb_otg_timer.data = (unsigned long)musb;
mod_timer(&musb_otg_timer, jiffies
@@ -834,9 +834,9 @@
+ msecs_to_jiffies(musb->a_wait_bcon));
break;
case OTG_STATE_A_HOST:
- musb->xceiv.state = OTG_STATE_A_SUSPEND;
+ musb->xceiv->state = OTG_STATE_A_SUSPEND;
musb->is_active = is_otg_enabled(musb)
- && musb->xceiv.host->b_hnp_enable;
+ && musb->xceiv->host->b_hnp_enable;
break;
case OTG_STATE_B_HOST:
/* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */
@@ -1682,7 +1682,7 @@
spin_lock_irqsave(&musb->lock, flags);
musb->a_wait_bcon = val;
- if (musb->xceiv.state == OTG_STATE_A_WAIT_BCON)
+ if (musb->xceiv->state == OTG_STATE_A_WAIT_BCON)
musb->is_active = 0;
musb_platform_try_idle(musb, jiffies + msecs_to_jiffies(val));
spin_unlock_irqrestore(&musb->lock, flags);
@@ -1743,8 +1743,8 @@
struct musb *musb = container_of(data, struct musb, irq_work);
static int old_state;
- if (musb->xceiv.state != old_state) {
- old_state = musb->xceiv.state;
+ if (musb->xceiv->state != old_state) {
+ old_state = musb->xceiv->state;
sysfs_notify(&musb->controller->kobj, NULL, "mode");
}
}
@@ -1841,7 +1841,7 @@
}
#ifdef CONFIG_USB_MUSB_OTG
- put_device(musb->xceiv.dev);
+ put_device(musb->xceiv->dev);
#endif
#ifdef CONFIG_USB_MUSB_HDRC_HCD
@@ -1922,10 +1922,18 @@
}
}
- /* assume vbus is off */
-
- /* platform adjusts musb->mregs and musb->isr if needed,
- * and activates clocks
+ /* The musb_platform_init() call:
+ * - adjusts musb->mregs and musb->isr if needed,
+ * - may initialize an integrated tranceiver
+ * - initializes musb->xceiv, usually by otg_get_transceiver()
+ * - activates clocks.
+ * - stops powering VBUS
+ * - assigns musb->board_set_vbus if host mode is enabled
+ *
+ * There are various transciever configurations. Blackfin,
+ * DaVinci, TUSB60x0, and others integrate them. OMAP3 uses
+ * external/discrete ones in various flavors (twl4030 family,
+ * isp1504, non-OTG, etc) mostly hooking up through ULPI.
*/
musb->isr = generic_interrupt;
status = musb_platform_init(musb);
@@ -1993,17 +2001,17 @@
? "DMA" : "PIO",
musb->nIrq);
-#ifdef CONFIG_USB_MUSB_HDRC_HCD
- /* host side needs more setup, except for no-host modes */
- if (musb->board_mode != MUSB_PERIPHERAL) {
+ /* host side needs more setup */
+ if (is_host_enabled(musb)) {
struct usb_hcd *hcd = musb_to_hcd(musb);
- if (musb->board_mode == MUSB_OTG)
+ otg_set_host(musb->xceiv, &hcd->self);
+
+ if (is_otg_enabled(musb))
hcd->self.otg_port = 1;
- musb->xceiv.host = &hcd->self;
+ musb->xceiv->host = &hcd->self;
hcd->power_budget = 2 * (plat->power ? : 250);
}
-#endif /* CONFIG_USB_MUSB_HDRC_HCD */
/* For the host-only role, we can activate right away.
* (We expect the ID pin to be forcibly grounded!!)
@@ -2011,8 +2019,8 @@
*/
if (!is_otg_enabled(musb) && is_host_enabled(musb)) {
MUSB_HST_MODE(musb);
- musb->xceiv.default_a = 1;
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->default_a = 1;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
status = usb_add_hcd(musb_to_hcd(musb), -1, 0);
if (status)
@@ -2027,8 +2035,8 @@
} else /* peripheral is enabled */ {
MUSB_DEV_MODE(musb);
- musb->xceiv.default_a = 0;
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->default_a = 0;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
status = musb_gadget_setup(musb);
if (status)
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index c2a776e..2b49c98 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -356,7 +356,7 @@
u16 int_rx;
u16 int_tx;
- struct otg_transceiver xceiv;
+ struct otg_transceiver *xceiv;
int nIrq;
unsigned irq_wake:1;
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index bc197b28..8dfad11 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1406,7 +1406,7 @@
spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_B_PERIPHERAL:
/* NOTE: OTG state machine doesn't include B_SUSPENDED;
* that's part of the standard usb 1.1 state machine, and
@@ -1508,9 +1508,9 @@
{
struct musb *musb = gadget_to_musb(gadget);
- if (!musb->xceiv.set_power)
+ if (!musb->xceiv->set_power)
return -EOPNOTSUPP;
- return otg_set_power(&musb->xceiv, mA);
+ return otg_set_power(musb->xceiv, mA);
}
static int musb_gadget_pullup(struct usb_gadget *gadget, int is_on)
@@ -1733,11 +1733,7 @@
spin_lock_irqsave(&musb->lock, flags);
- /* REVISIT always use otg_set_peripheral(), handling
- * issues including the root hub one below ...
- */
- musb->xceiv.gadget = &musb->g;
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ otg_set_peripheral(musb->xceiv, &musb->g);
musb->is_active = 1;
/* FIXME this ignores the softconnect flag. Drivers are
@@ -1749,6 +1745,8 @@
if (!is_otg_enabled(musb))
musb_start(musb);
+ otg_set_peripheral(musb->xceiv, &musb->g);
+
spin_unlock_irqrestore(&musb->lock, flags);
if (is_otg_enabled(musb)) {
@@ -1762,8 +1760,7 @@
if (retval < 0) {
DBG(1, "add_hcd failed, %d\n", retval);
spin_lock_irqsave(&musb->lock, flags);
- musb->xceiv.gadget = NULL;
- musb->xceiv.state = OTG_STATE_UNDEFINED;
+ otg_set_peripheral(musb->xceiv, NULL);
musb->gadget_driver = NULL;
musb->g.dev.driver = NULL;
spin_unlock_irqrestore(&musb->lock, flags);
@@ -1846,8 +1843,9 @@
(void) musb_gadget_vbus_draw(&musb->g, 0);
- musb->xceiv.state = OTG_STATE_UNDEFINED;
+ musb->xceiv->state = OTG_STATE_UNDEFINED;
stop_activity(musb, driver);
+ otg_set_peripheral(musb->xceiv, NULL);
DBG(3, "unregistering driver %s\n", driver->function);
spin_unlock_irqrestore(&musb->lock, flags);
@@ -1883,7 +1881,7 @@
void musb_g_resume(struct musb *musb)
{
musb->is_suspended = 0;
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_B_IDLE:
break;
case OTG_STATE_B_WAIT_ACON:
@@ -1909,10 +1907,10 @@
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
DBG(3, "devctl %02x\n", devctl);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_B_IDLE:
if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS)
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
break;
case OTG_STATE_B_PERIPHERAL:
musb->is_suspended = 1;
@@ -1958,22 +1956,22 @@
spin_lock(&musb->lock);
}
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
default:
#ifdef CONFIG_USB_MUSB_OTG
DBG(2, "Unhandled disconnect %s, setting a_idle\n",
otg_state_string(musb));
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
break;
case OTG_STATE_A_PERIPHERAL:
- musb->xceiv.state = OTG_STATE_A_WAIT_VFALL;
+ musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
break;
case OTG_STATE_B_WAIT_ACON:
case OTG_STATE_B_HOST:
#endif
case OTG_STATE_B_PERIPHERAL:
case OTG_STATE_B_IDLE:
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
break;
case OTG_STATE_B_SRP_INIT:
break;
@@ -2029,10 +2027,10 @@
* or else after HNP, as A-Device
*/
if (devctl & MUSB_DEVCTL_BDEVICE) {
- musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb->g.is_a_peripheral = 0;
} else if (is_otg_enabled(musb)) {
- musb->xceiv.state = OTG_STATE_A_PERIPHERAL;
+ musb->xceiv->state = OTG_STATE_A_PERIPHERAL;
musb->g.is_a_peripheral = 1;
} else
WARN_ON(1);
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index c1bb192..0d1f153 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2213,7 +2213,7 @@
{
struct musb *musb = hcd_to_musb(hcd);
- if (musb->xceiv.state == OTG_STATE_A_SUSPEND)
+ if (musb->xceiv->state == OTG_STATE_A_SUSPEND)
return 0;
if (is_host_active(musb) && musb->is_active) {
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index bf677ac..d7e1bc4 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -78,18 +78,18 @@
DBG(3, "Root port suspended, power %02x\n", power);
musb->port1_status |= USB_PORT_STAT_SUSPEND;
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_HOST:
- musb->xceiv.state = OTG_STATE_A_SUSPEND;
+ musb->xceiv->state = OTG_STATE_A_SUSPEND;
musb->is_active = is_otg_enabled(musb)
- && musb->xceiv.host->b_hnp_enable;
+ && musb->xceiv->host->b_hnp_enable;
musb_platform_try_idle(musb, 0);
break;
#ifdef CONFIG_USB_MUSB_OTG
case OTG_STATE_B_HOST:
- musb->xceiv.state = OTG_STATE_B_WAIT_ACON;
+ musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
musb->is_active = is_otg_enabled(musb)
- && musb->xceiv.host->b_hnp_enable;
+ && musb->xceiv->host->b_hnp_enable;
musb_platform_try_idle(musb, 0);
break;
#endif
@@ -116,7 +116,7 @@
void __iomem *mbase = musb->mregs;
#ifdef CONFIG_USB_MUSB_OTG
- if (musb->xceiv.state == OTG_STATE_B_IDLE) {
+ if (musb->xceiv->state == OTG_STATE_B_IDLE) {
DBG(2, "HNP: Returning from HNP; no hub reset from b_idle\n");
musb->port1_status &= ~USB_PORT_STAT_RESET;
return;
@@ -186,14 +186,14 @@
usb_hcd_poll_rh_status(musb_to_hcd(musb));
musb->is_active = 0;
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_HOST:
case OTG_STATE_A_SUSPEND:
- musb->xceiv.state = OTG_STATE_A_WAIT_BCON;
+ musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
musb->is_active = 0;
break;
case OTG_STATE_A_WAIT_VFALL:
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
break;
default:
DBG(1, "host disconnect (%s)\n", otg_state_string(musb));
@@ -332,7 +332,7 @@
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;
+ musb->xceiv->state = OTG_STATE_A_HOST;
}
put_unaligned(cpu_to_le32(musb->port1_status
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 60924ce..a2f4438 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -61,17 +61,17 @@
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
- switch (musb->xceiv.state) {
+ 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->xceiv->state = OTG_STATE_B_IDLE;
MUSB_DEV_MODE(musb);
} else {
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
MUSB_HST_MODE(musb);
}
break;
@@ -89,7 +89,7 @@
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;
+ musb->xceiv->state = OTG_STATE_A_HOST;
}
break;
#endif
@@ -97,9 +97,9 @@
case OTG_STATE_A_HOST:
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
if (devctl & MUSB_DEVCTL_BDEVICE)
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
else
- musb->xceiv.state = OTG_STATE_A_WAIT_BCON;
+ musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
#endif
default:
break;
@@ -118,7 +118,7 @@
/* 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))) {
+ && (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;
@@ -163,8 +163,8 @@
if (is_on) {
musb->is_active = 1;
- musb->xceiv.default_a = 1;
- musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
+ musb->xceiv->default_a = 1;
+ musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
devctl |= MUSB_DEVCTL_SESSION;
MUSB_HST_MODE(musb);
@@ -175,8 +175,8 @@
* jumping right to B_IDLE...
*/
- musb->xceiv.default_a = 0;
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->default_a = 0;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
devctl &= ~MUSB_DEVCTL_SESSION;
MUSB_DEV_MODE(musb);
@@ -188,10 +188,6 @@
otg_state_string(musb),
musb_readb(musb->mregs, MUSB_DEVCTL));
}
-static int omap_set_power(struct otg_transceiver *x, unsigned mA)
-{
- return 0;
-}
static int musb_platform_resume(struct musb *musb);
@@ -202,24 +198,6 @@
devctl |= MUSB_DEVCTL_SESSION;
musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
- switch (musb_mode) {
-#ifdef CONFIG_USB_MUSB_HDRC_HCD
- case MUSB_HOST:
- otg_set_host(&musb->xceiv, musb->xceiv.host);
- break;
-#endif
-#ifdef CONFIG_USB_GADGET_MUSB_HDRC
- case MUSB_PERIPHERAL:
- otg_set_peripheral(&musb->xceiv, musb->xceiv.gadget);
- break;
-#endif
-#ifdef CONFIG_USB_MUSB_OTG
- case MUSB_OTG:
- break;
-#endif
- default:
- return -EINVAL;
- }
return 0;
}
@@ -231,6 +209,16 @@
omap_cfg_reg(AE5_2430_USB0HS_STP);
#endif
+ /* We require some kind of external transceiver, hooked
+ * up through ULPI. TWL4030-family PMICs include one,
+ * which needs a driver, drivers aren't always needed.
+ */
+ musb->xceiv = otg_get_transceiver();
+ if (!musb->xceiv) {
+ pr_err("HS USB OTG: no transceiver configured\n");
+ return -ENODEV;
+ }
+
musb_platform_resume(musb);
l = omap_readl(OTG_SYSCONFIG);
@@ -257,8 +245,6 @@
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);
@@ -282,8 +268,7 @@
l |= ENABLEWAKEUP; /* enable wakeup */
omap_writel(l, OTG_SYSCONFIG);
- if (musb->xceiv.set_suspend)
- musb->xceiv.set_suspend(&musb->xceiv, 1);
+ otg_set_suspend(musb->xceiv, 1);
if (musb->set_clock)
musb->set_clock(musb->clock, 0);
@@ -300,8 +285,7 @@
if (!musb->clock)
return 0;
- if (musb->xceiv.set_suspend)
- musb->xceiv.set_suspend(&musb->xceiv, 0);
+ otg_set_suspend(musb->xceiv, 0);
if (musb->set_clock)
musb->set_clock(musb->clock, 1);
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 4ac1477..88b587c 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -259,6 +259,8 @@
tusb_fifo_read_unaligned(fifo, buf, len);
}
+static struct musb *the_musb;
+
#ifdef CONFIG_USB_GADGET_MUSB_HDRC
/* This is used by gadget drivers, and OTG transceiver logic, allowing
@@ -269,7 +271,7 @@
*/
static int tusb_draw_power(struct otg_transceiver *x, unsigned mA)
{
- struct musb *musb = container_of(x, struct musb, xceiv);
+ struct musb *musb = the_musb;
void __iomem *tbase = musb->ctrl_base;
u32 reg;
@@ -419,7 +421,7 @@
spin_lock_irqsave(&musb->lock, flags);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_WAIT_BCON:
if ((musb->a_wait_bcon != 0)
&& (musb->idle_timeout == 0
@@ -483,7 +485,7 @@
/* 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))) {
+ && (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;
@@ -532,8 +534,8 @@
if (musb->set_clock)
musb->set_clock(musb->clock, 1);
timer = OTG_TIMER_MS(OTG_TIME_A_WAIT_VRISE);
- musb->xceiv.default_a = 1;
- musb->xceiv.state = OTG_STATE_A_WAIT_VRISE;
+ musb->xceiv->default_a = 1;
+ musb->xceiv->state = OTG_STATE_A_WAIT_VRISE;
devctl |= MUSB_DEVCTL_SESSION;
conf |= TUSB_DEV_CONF_USB_HOST_MODE;
@@ -546,24 +548,24 @@
/* If ID pin is grounded, we want to be a_idle */
otg_stat = musb_readl(tbase, TUSB_DEV_OTG_STAT);
if (!(otg_stat & TUSB_DEV_OTG_STAT_ID_STATUS)) {
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_WAIT_VRISE:
case OTG_STATE_A_WAIT_BCON:
- musb->xceiv.state = OTG_STATE_A_WAIT_VFALL;
+ musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
break;
case OTG_STATE_A_WAIT_VFALL:
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
break;
default:
- musb->xceiv.state = OTG_STATE_A_IDLE;
+ musb->xceiv->state = OTG_STATE_A_IDLE;
}
musb->is_active = 0;
- musb->xceiv.default_a = 1;
+ musb->xceiv->default_a = 1;
MUSB_HST_MODE(musb);
} else {
musb->is_active = 0;
- musb->xceiv.default_a = 0;
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->default_a = 0;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
MUSB_DEV_MODE(musb);
}
@@ -674,7 +676,7 @@
else
default_a = is_host_enabled(musb);
DBG(2, "Default-%c\n", default_a ? 'A' : 'B');
- musb->xceiv.default_a = default_a;
+ musb->xceiv->default_a = default_a;
tusb_source_power(musb, default_a);
/* Don't allow idling immediately */
@@ -686,7 +688,7 @@
if (int_src & TUSB_INT_SRC_VBUS_SENSE_CHNG) {
/* B-dev state machine: no vbus ~= disconnect */
- if ((is_otg_enabled(musb) && !musb->xceiv.default_a)
+ if ((is_otg_enabled(musb) && !musb->xceiv->default_a)
|| !is_host_enabled(musb)) {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
/* ? musb_root_disconnect(musb); */
@@ -701,9 +703,9 @@
if (otg_stat & TUSB_DEV_OTG_STAT_SESS_END) {
DBG(1, "Forcing disconnect (no interrupt)\n");
- if (musb->xceiv.state != OTG_STATE_B_IDLE) {
+ if (musb->xceiv->state != OTG_STATE_B_IDLE) {
/* INTR_DISCONNECT can hide... */
- musb->xceiv.state = OTG_STATE_B_IDLE;
+ musb->xceiv->state = OTG_STATE_B_IDLE;
musb->int_usb |= MUSB_INTR_DISCONNECT;
}
musb->is_active = 0;
@@ -717,7 +719,7 @@
DBG(2, "vbus change, %s, otg %03x\n",
otg_state_string(musb), otg_stat);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_IDLE:
DBG(2, "Got SRP, turning on VBUS\n");
musb_set_vbus(musb, 1);
@@ -765,7 +767,7 @@
DBG(4, "%s timer, %03x\n", otg_state_string(musb), otg_stat);
- switch (musb->xceiv.state) {
+ switch (musb->xceiv->state) {
case OTG_STATE_A_WAIT_VRISE:
/* VBUS has probably been valid for a while now,
* but may well have bounced out of range a bit
@@ -777,7 +779,7 @@
DBG(2, "devctl %02x\n", devctl);
break;
}
- musb->xceiv.state = OTG_STATE_A_WAIT_BCON;
+ musb->xceiv->state = OTG_STATE_A_WAIT_BCON;
musb->is_active = 0;
idle_timeout = jiffies
+ msecs_to_jiffies(musb->a_wait_bcon);
@@ -1093,9 +1095,14 @@
{
struct platform_device *pdev;
struct resource *mem;
- void __iomem *sync;
+ void __iomem *sync = NULL;
int ret;
+ usb_nop_xceiv_register();
+ musb->xceiv = otg_get_transceiver();
+ if (!musb->xceiv)
+ return -ENODEV;
+
pdev = to_platform_device(musb->controller);
/* dma address for async dma */
@@ -1106,14 +1113,16 @@
mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!mem) {
pr_debug("no sync dma resource?\n");
- return -ENODEV;
+ ret = -ENODEV;
+ goto done;
}
musb->sync = mem->start;
sync = ioremap(mem->start, mem->end - mem->start + 1);
if (!sync) {
pr_debug("ioremap for sync failed\n");
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto done;
}
musb->sync_va = sync;
@@ -1126,28 +1135,37 @@
if (ret) {
printk(KERN_ERR "Could not start tusb6010 (%d)\n",
ret);
- return -ENODEV;
+ goto done;
}
musb->isr = tusb_interrupt;
if (is_host_enabled(musb))
musb->board_set_vbus = tusb_source_power;
- if (is_peripheral_enabled(musb))
- musb->xceiv.set_power = tusb_draw_power;
+ if (is_peripheral_enabled(musb)) {
+ musb->xceiv->set_power = tusb_draw_power;
+ the_musb = musb;
+ }
setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
+done:
+ if (ret < 0) {
+ if (sync)
+ iounmap(sync);
+ usb_nop_xceiv_unregister();
+ }
return ret;
}
int musb_platform_exit(struct musb *musb)
{
del_timer_sync(&musb_idle_timer);
+ the_musb = NULL;
if (musb->board_set_power)
musb->board_set_power(0);
iounmap(musb->sync_va);
-
+ usb_nop_xceiv_unregister();
return 0;
}