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path: root/drivers/usb/musb/musb_core.c
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Diffstat (limited to 'drivers/usb/musb/musb_core.c')
-rw-r--r--drivers/usb/musb/musb_core.c151
1 files changed, 66 insertions, 85 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index f10ff00ca09..ab8e1001e5e 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -104,10 +104,6 @@
#define TA_WAIT_BCON(m) max_t(int, (m)->a_wait_bcon, OTG_TIME_A_WAIT_BCON)
-unsigned musb_debug;
-module_param_named(debug, musb_debug, uint, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug message level. Default = 0");
-
#define DRIVER_AUTHOR "Mentor Graphics, Texas Instruments, Nokia"
#define DRIVER_DESC "Inventra Dual-Role USB Controller Driver"
@@ -157,10 +153,8 @@ static int musb_ulpi_read(struct otg_transceiver *otg, u32 offset)
while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL)
& MUSB_ULPI_REG_CMPLT)) {
i++;
- if (i == 10000) {
- DBG(3, "ULPI read timed out\n");
+ if (i == 10000)
return -ETIMEDOUT;
- }
}
r = musb_readb(addr, MUSB_ULPI_REG_CONTROL);
@@ -190,10 +184,8 @@ static int musb_ulpi_write(struct otg_transceiver *otg,
while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL)
& MUSB_ULPI_REG_CMPLT)) {
i++;
- if (i == 10000) {
- DBG(3, "ULPI write timed out\n");
+ if (i == 10000)
return -ETIMEDOUT;
- }
}
r = musb_readb(addr, MUSB_ULPI_REG_CONTROL);
@@ -221,11 +213,12 @@ static struct otg_io_access_ops musb_ulpi_access = {
*/
void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
{
+ struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
prefetch((u8 *)src);
- DBG(4, "%cX ep%d fifo %p count %d buf %p\n",
+ dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n",
'T', hw_ep->epnum, fifo, len, src);
/* we can't assume unaligned reads work */
@@ -262,9 +255,10 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
*/
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
+ struct musb *musb = hw_ep->musb;
void __iomem *fifo = hw_ep->fifo;
- DBG(4, "%cX ep%d fifo %p count %d buf %p\n",
+ dev_dbg(musb->controller, "%cX ep%d fifo %p count %d buf %p\n",
'R', hw_ep->epnum, fifo, len, dst);
/* we can't assume unaligned writes work */
@@ -333,26 +327,6 @@ void musb_load_testpacket(struct musb *musb)
/*-------------------------------------------------------------------------*/
-const char *otg_state_string(struct musb *musb)
-{
- 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";
- case OTG_STATE_A_HOST: return "a_host";
- case OTG_STATE_A_SUSPEND: return "a_suspend";
- case OTG_STATE_A_PERIPHERAL: return "a_peripheral";
- case OTG_STATE_A_WAIT_VFALL: return "a_wait_vfall";
- case OTG_STATE_A_VBUS_ERR: return "a_vbus_err";
- case OTG_STATE_B_IDLE: return "b_idle";
- case OTG_STATE_B_SRP_INIT: return "b_srp_init";
- case OTG_STATE_B_PERIPHERAL: return "b_peripheral";
- case OTG_STATE_B_WAIT_ACON: return "b_wait_acon";
- case OTG_STATE_B_HOST: return "b_host";
- default: return "UNDEFINED";
- }
-}
-
#ifdef CONFIG_USB_MUSB_OTG
/*
@@ -366,19 +340,21 @@ void musb_otg_timer_func(unsigned long data)
spin_lock_irqsave(&musb->lock, flags);
switch (musb->xceiv->state) {
case OTG_STATE_B_WAIT_ACON:
- DBG(1, "HNP: b_wait_acon timeout; back to b_peripheral\n");
+ dev_dbg(musb->controller, "HNP: b_wait_acon timeout; back to b_peripheral\n");
musb_g_disconnect(musb);
musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb->is_active = 0;
break;
case OTG_STATE_A_SUSPEND:
case OTG_STATE_A_WAIT_BCON:
- DBG(1, "HNP: %s timeout\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "HNP: %s timeout\n",
+ otg_state_string(musb->xceiv->state));
musb_platform_set_vbus(musb, 0);
musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
break;
default:
- DBG(1, "HNP: Unhandled mode %s\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "HNP: Unhandled mode %s\n",
+ otg_state_string(musb->xceiv->state));
}
musb->ignore_disconnect = 0;
spin_unlock_irqrestore(&musb->lock, flags);
@@ -393,15 +369,16 @@ void musb_hnp_stop(struct musb *musb)
void __iomem *mbase = musb->mregs;
u8 reg;
- DBG(1, "HNP: stop from %s\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "HNP: stop from %s\n", otg_state_string(musb->xceiv->state));
switch (musb->xceiv->state) {
case OTG_STATE_A_PERIPHERAL:
musb_g_disconnect(musb);
- DBG(1, "HNP: back to %s\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "HNP: back to %s\n",
+ otg_state_string(musb->xceiv->state));
break;
case OTG_STATE_B_HOST:
- DBG(1, "HNP: Disabling HR\n");
+ dev_dbg(musb->controller, "HNP: Disabling HR\n");
hcd->self.is_b_host = 0;
musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
MUSB_DEV_MODE(musb);
@@ -411,8 +388,8 @@ void musb_hnp_stop(struct musb *musb)
/* REVISIT: Start SESSION_REQUEST here? */
break;
default:
- DBG(1, "HNP: Stopping in unknown state %s\n",
- otg_state_string(musb));
+ dev_dbg(musb->controller, "HNP: Stopping in unknown state %s\n",
+ otg_state_string(musb->xceiv->state));
}
/*
@@ -442,7 +419,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
{
irqreturn_t handled = IRQ_NONE;
- DBG(3, "<== Power=%02x, DevCtl=%02x, int_usb=0x%x\n", power, devctl,
+ dev_dbg(musb->controller, "<== Power=%02x, DevCtl=%02x, int_usb=0x%x\n", power, devctl,
int_usb);
/* in host mode, the peripheral may issue remote wakeup.
@@ -451,7 +428,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
*/
if (int_usb & MUSB_INTR_RESUME) {
handled = IRQ_HANDLED;
- DBG(3, "RESUME (%s)\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "RESUME (%s)\n", otg_state_string(musb->xceiv->state));
if (devctl & MUSB_DEVCTL_HM) {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
@@ -466,7 +443,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
if (power & MUSB_POWER_SUSPENDM) {
/* spurious */
musb->int_usb &= ~MUSB_INTR_SUSPEND;
- DBG(2, "Spurious SUSPENDM\n");
+ dev_dbg(musb->controller, "Spurious SUSPENDM\n");
break;
}
@@ -492,7 +469,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
default:
WARNING("bogus %s RESUME (%s)\n",
"host",
- otg_state_string(musb));
+ otg_state_string(musb->xceiv->state));
}
#endif
} else {
@@ -526,7 +503,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
default:
WARNING("bogus %s RESUME (%s)\n",
"peripheral",
- otg_state_string(musb));
+ otg_state_string(musb->xceiv->state));
}
}
}
@@ -538,11 +515,12 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
if ((devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS
&& (devctl & MUSB_DEVCTL_BDEVICE)) {
- DBG(3, "SessReq while on B state\n");
+ dev_dbg(musb->controller, "SessReq while on B state\n");
return IRQ_HANDLED;
}
- DBG(1, "SESSION_REQUEST (%s)\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "SESSION_REQUEST (%s)\n",
+ otg_state_string(musb->xceiv->state));
/* IRQ arrives from ID pin sense or (later, if VBUS power
* is removed) SRP. responses are time critical:
@@ -606,8 +584,8 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
break;
}
- DBG(1, "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n",
- otg_state_string(musb),
+ dev_dbg(musb->controller, "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n",
+ otg_state_string(musb->xceiv->state),
devctl,
({ char *s;
switch (devctl & MUSB_DEVCTL_VBUS) {
@@ -632,8 +610,8 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
#endif
if (int_usb & MUSB_INTR_SUSPEND) {
- DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
- otg_state_string(musb), devctl, power);
+ dev_dbg(musb->controller, "SUSPEND (%s) devctl %02x power %02x\n",
+ otg_state_string(musb->xceiv->state), devctl, power);
handled = IRQ_HANDLED;
switch (musb->xceiv->state) {
@@ -665,7 +643,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
if (musb->is_active) {
#ifdef CONFIG_USB_MUSB_OTG
musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
- DBG(1, "HNP: Setting timer for b_ase0_brst\n");
+ dev_dbg(musb->controller, "HNP: Setting timer for b_ase0_brst\n");
mod_timer(&musb->otg_timer, jiffies
+ msecs_to_jiffies(
OTG_TIME_B_ASE0_BRST));
@@ -684,7 +662,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
break;
case OTG_STATE_B_HOST:
/* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */
- DBG(1, "REVISIT: SUSPEND as B_HOST\n");
+ dev_dbg(musb->controller, "REVISIT: SUSPEND as B_HOST\n");
break;
default:
/* "should not happen" */
@@ -727,14 +705,14 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
switch (musb->xceiv->state) {
case OTG_STATE_B_PERIPHERAL:
if (int_usb & MUSB_INTR_SUSPEND) {
- DBG(1, "HNP: SUSPEND+CONNECT, now b_host\n");
+ dev_dbg(musb->controller, "HNP: SUSPEND+CONNECT, now b_host\n");
int_usb &= ~MUSB_INTR_SUSPEND;
goto b_host;
} else
- DBG(1, "CONNECT as b_peripheral???\n");
+ dev_dbg(musb->controller, "CONNECT as b_peripheral???\n");
break;
case OTG_STATE_B_WAIT_ACON:
- DBG(1, "HNP: CONNECT, now b_host\n");
+ dev_dbg(musb->controller, "HNP: CONNECT, now b_host\n");
b_host:
musb->xceiv->state = OTG_STATE_B_HOST;
hcd->self.is_b_host = 1;
@@ -757,14 +735,14 @@ b_host:
else
usb_hcd_resume_root_hub(hcd);
- DBG(1, "CONNECT (%s) devctl %02x\n",
- otg_state_string(musb), devctl);
+ dev_dbg(musb->controller, "CONNECT (%s) devctl %02x\n",
+ otg_state_string(musb->xceiv->state), devctl);
}
#endif /* CONFIG_USB_MUSB_HDRC_HCD */
if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) {
- DBG(1, "DISCONNECT (%s) as %s, devctl %02x\n",
- otg_state_string(musb),
+ dev_dbg(musb->controller, "DISCONNECT (%s) as %s, devctl %02x\n",
+ otg_state_string(musb->xceiv->state),
MUSB_MODE(musb), devctl);
handled = IRQ_HANDLED;
@@ -807,7 +785,7 @@ b_host:
#endif /* GADGET */
default:
WARNING("unhandled DISCONNECT transition (%s)\n",
- otg_state_string(musb));
+ otg_state_string(musb->xceiv->state));
break;
}
}
@@ -826,13 +804,14 @@ b_host:
* stop the session.
*/
if (devctl & (MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV))
- DBG(1, "BABBLE devctl: %02x\n", devctl);
+ dev_dbg(musb->controller, "BABBLE devctl: %02x\n", devctl);
else {
ERR("Stopping host session -- babble\n");
musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
}
} else if (is_peripheral_capable()) {
- DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
+ dev_dbg(musb->controller, "BUS RESET as %s\n",
+ otg_state_string(musb->xceiv->state));
switch (musb->xceiv->state) {
#ifdef CONFIG_USB_OTG
case OTG_STATE_A_SUSPEND:
@@ -845,9 +824,9 @@ b_host:
/* FALLTHROUGH */
case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */
/* never use invalid T(a_wait_bcon) */
- DBG(1, "HNP: in %s, %d msec timeout\n",
- otg_state_string(musb),
- TA_WAIT_BCON(musb));
+ dev_dbg(musb->controller, "HNP: in %s, %d msec timeout\n",
+ otg_state_string(musb->xceiv->state),
+ TA_WAIT_BCON(musb));
mod_timer(&musb->otg_timer, jiffies
+ msecs_to_jiffies(TA_WAIT_BCON(musb)));
break;
@@ -857,8 +836,8 @@ b_host:
musb_g_reset(musb);
break;
case OTG_STATE_B_WAIT_ACON:
- DBG(1, "HNP: RESET (%s), to b_peripheral\n",
- otg_state_string(musb));
+ dev_dbg(musb->controller, "HNP: RESET (%s), to b_peripheral\n",
+ otg_state_string(musb->xceiv->state));
musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
musb_g_reset(musb);
break;
@@ -870,8 +849,8 @@ b_host:
musb_g_reset(musb);
break;
default:
- DBG(1, "Unhandled BUS RESET as %s\n",
- otg_state_string(musb));
+ dev_dbg(musb->controller, "Unhandled BUS RESET as %s\n",
+ otg_state_string(musb->xceiv->state));
}
}
}
@@ -894,7 +873,7 @@ b_host:
u8 epnum;
u16 frame;
- DBG(6, "START_OF_FRAME\n");
+ dev_dbg(musb->controller, "START_OF_FRAME\n");
handled = IRQ_HANDLED;
/* start any periodic Tx transfers waiting for current frame */
@@ -936,7 +915,7 @@ void musb_start(struct musb *musb)
void __iomem *regs = musb->mregs;
u8 devctl = musb_readb(regs, MUSB_DEVCTL);
- DBG(2, "<== devctl %02x\n", devctl);
+ dev_dbg(musb->controller, "<== devctl %02x\n", devctl);
/* Set INT enable registers, enable interrupts */
musb_writew(regs, MUSB_INTRTXE, musb->epmask);
@@ -1013,7 +992,7 @@ void musb_stop(struct musb *musb)
/* stop IRQs, timers, ... */
musb_platform_disable(musb);
musb_generic_disable(musb);
- DBG(3, "HDRC disabled\n");
+ dev_dbg(musb->controller, "HDRC disabled\n");
/* FIXME
* - mark host and/or peripheral drivers unusable/inactive
@@ -1359,7 +1338,7 @@ static int __init ep_config_from_hw(struct musb *musb)
void *mbase = musb->mregs;
int ret = 0;
- DBG(2, "<== static silicon ep config\n");
+ dev_dbg(musb->controller, "<== static silicon ep config\n");
/* FIXME pick up ep0 maxpacket size */
@@ -1506,7 +1485,7 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
#endif
if (hw_ep->max_packet_sz_tx) {
- DBG(1,
+ dev_dbg(musb->controller,
"%s: hw_ep %d%s, %smax %d\n",
musb_driver_name, i,
hw_ep->is_shared_fifo ? "shared" : "tx",
@@ -1515,7 +1494,7 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
hw_ep->max_packet_sz_tx);
}
if (hw_ep->max_packet_sz_rx && !hw_ep->is_shared_fifo) {
- DBG(1,
+ dev_dbg(musb->controller,
"%s: hw_ep %d%s, %smax %d\n",
musb_driver_name, i,
"rx",
@@ -1524,7 +1503,7 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
hw_ep->max_packet_sz_rx);
}
if (!(hw_ep->max_packet_sz_tx || hw_ep->max_packet_sz_rx))
- DBG(1, "hw_ep %d not configured\n", i);
+ dev_dbg(musb->controller, "hw_ep %d not configured\n", i);
}
return 0;
@@ -1577,14 +1556,14 @@ irqreturn_t musb_interrupt(struct musb *musb)
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
power = musb_readb(musb->mregs, MUSB_POWER);
- DBG(4, "** IRQ %s usb%04x tx%04x rx%04x\n",
+ dev_dbg(musb->controller, "** IRQ %s usb%04x tx%04x rx%04x\n",
(devctl & MUSB_DEVCTL_HM) ? "host" : "peripheral",
musb->int_usb, musb->int_tx, musb->int_rx);
#ifdef CONFIG_USB_GADGET_MUSB_HDRC
if (is_otg_enabled(musb) || is_peripheral_enabled(musb))
if (!musb->gadget_driver) {
- DBG(5, "No gadget driver loaded\n");
+ dev_dbg(musb->controller, "No gadget driver loaded\n");
return IRQ_HANDLED;
}
#endif
@@ -1649,7 +1628,7 @@ irqreturn_t musb_interrupt(struct musb *musb)
return retval;
}
-
+EXPORT_SYMBOL_GPL(musb_interrupt);
#ifndef CONFIG_MUSB_PIO_ONLY
static int __initdata use_dma = 1;
@@ -1713,7 +1692,7 @@ musb_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
int ret = -EINVAL;
spin_lock_irqsave(&musb->lock, flags);
- ret = sprintf(buf, "%s\n", otg_state_string(musb));
+ ret = sprintf(buf, "%s\n", otg_state_string(musb->xceiv->state));
spin_unlock_irqrestore(&musb->lock, flags);
return ret;
@@ -2075,7 +2054,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
status = usb_add_hcd(musb_to_hcd(musb), -1, 0);
hcd->self.uses_pio_for_control = 1;
- DBG(1, "%s mode, status %d, devctl %02x %c\n",
+ dev_dbg(musb->controller, "%s mode, status %d, devctl %02x %c\n",
"HOST", status,
musb_readb(musb->mregs, MUSB_DEVCTL),
(musb_readb(musb->mregs, MUSB_DEVCTL)
@@ -2089,7 +2068,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
status = musb_gadget_setup(musb);
- DBG(1, "%s mode, status %d, dev%02x\n",
+ dev_dbg(musb->controller, "%s mode, status %d, dev%02x\n",
is_otg_enabled(musb) ? "OTG" : "PERIPHERAL",
status,
musb_readb(musb->mregs, MUSB_DEVCTL));
@@ -2460,6 +2439,8 @@ static int __init musb_init(void)
"musb-dma"
#elif defined(CONFIG_USB_TUSB_OMAP_DMA)
"tusb-omap-dma"
+#elif defined(CONFIG_USB_UX500_DMA)
+ "ux500-dma"
#else
"?dma?"
#endif
@@ -2471,8 +2452,8 @@ static int __init musb_init(void)
#elif defined(CONFIG_USB_MUSB_HDRC_HCD)
"host"
#endif
- ", debug=%d\n",
- musb_driver_name, musb_debug);
+ ,
+ musb_driver_name);
return platform_driver_probe(&musb_driver, musb_probe);
}