From: Felipe Balbi <felipe.souza-lima-de@xxxxxxxxx>
Instead of defining otg_state_string-like functions for each otg
transceiver driver, make otg_state_string generic and change its users.
Signed-off-by: Felipe Balbi <felipe.souza-lima-de@xxxxxxxxx>
---
drivers/i2c/chips/isp1301_omap.c | 60 +++++++++++---------------------------
drivers/usb/musb/musb_core.c | 52 ++++++++++----------------------
drivers/usb/musb/musb_debug.h | 2 -
drivers/usb/musb/musb_gadget.c | 8 ++--
drivers/usb/musb/musb_host.c | 2 +-
drivers/usb/musb/musb_virthub.c | 4 +-
drivers/usb/musb/tusb6010.c | 14 ++++----
include/linux/usb/otg.h | 22 ++++++++++++++
8 files changed, 69 insertions(+), 95 deletions(-)
diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c
index 5fb27cb..1efc9e7 100644
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -233,31 +233,6 @@ isp1301_clear_bits(struct isp1301 *isp, u8 reg, u8 bits)
/*-------------------------------------------------------------------------*/
-static const char *state_string(enum usb_otg_state state)
-{
- switch (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";
- }
-}
-
-static inline const char *state_name(struct isp1301 *isp)
-{
- return state_string(isp->otg.state);
-}
-
#ifdef VERBOSE
#define dev_vdbg dev_dbg
#else
@@ -379,7 +354,7 @@ static void a_idle(struct isp1301 *isp, const char *tag)
}
isp->otg.state = OTG_STATE_A_IDLE;
isp->last_otg_ctrl = OTG_CTRL_REG = OTG_CTRL_REG & OTG_XCEIV_OUTPUTS;
- pr_debug(" --> %s/%s\n", state_name(isp), tag);
+ pr_debug(" --> %s/%s\n", otg_state_string(&isp->otg), tag);
}
/* called from irq handlers */
@@ -399,7 +374,7 @@ static void b_idle(struct isp1301 *isp, const char *tag)
}
isp->otg.state = OTG_STATE_B_IDLE;
isp->last_otg_ctrl = OTG_CTRL_REG = OTG_CTRL_REG & OTG_XCEIV_OUTPUTS;
- pr_debug(" --> %s/%s\n", state_name(isp), tag);
+ pr_debug(" --> %s/%s\n", otg_state_string(&isp->otg), tag);
}
static void
@@ -411,7 +386,7 @@ dump_regs(struct isp1301 *isp, const char *label)
u8 src = isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE);
pr_debug("otg: %06x, %s %s, otg/%02x stat/%02x.%02x\n",
- OTG_CTRL_REG, label, state_name(isp),
+ OTG_CTRL_REG, label, otg_state_string(&isp->otg),
ctrl, status, src);
/* mode control and irq enables don't change much */
#endif
@@ -498,8 +473,8 @@ static void check_state(struct isp1301 *isp, const char *tag)
}
if (isp->otg.state == state && !extra)
return;
- pr_debug("otg: %s FSM %s/%02x, %s, %06x\n", tag,
- state_string(state), fsm, state_name(isp), OTG_CTRL_REG);
+ pr_debug("otg: %s FSM %s/%02x, %06x\n", tag,
+ otg_state_string(&isp->otg), fsm, OTG_CTRL_REG);
}
#else
@@ -702,7 +677,7 @@ static irqreturn_t omap_otg_irq(int irq, void *_isp)
/* HNP to become b_host failed */
} else if (otg_irq & B_HNP_FAIL) {
pr_debug("otg: %s B_HNP_FAIL, %06x\n",
- state_name(isp), OTG_CTRL_REG);
+ otg_state_string(&isp->otg), OTG_CTRL_REG);
notresponding(isp);
otg_ctrl = OTG_CTRL_REG;
@@ -720,7 +695,7 @@ static irqreturn_t omap_otg_irq(int irq, void *_isp)
/* detect SRP from B-device ... */
} else if (otg_irq & A_SRP_DETECT) {
pr_debug("otg: %s SRP_DETECT, %06x\n",
- state_name(isp), OTG_CTRL_REG);
+ otg_state_string(&isp->otg), OTG_CTRL_REG);
isp1301_defer_work(isp, WORK_UPDATE_OTG);
switch (isp->otg.state) {
@@ -748,7 +723,7 @@ static irqreturn_t omap_otg_irq(int irq, void *_isp)
} else if (otg_irq & A_REQ_TMROUT) {
otg_ctrl = OTG_CTRL_REG;
pr_info("otg: BCON_TMOUT from %s, %06x\n",
- state_name(isp), otg_ctrl);
+ otg_state_string(&isp->otg), otg_ctrl);
notresponding(isp);
otg_ctrl |= OTG_BUSDROP;
@@ -763,7 +738,7 @@ static irqreturn_t omap_otg_irq(int irq, void *_isp)
} else if (otg_irq & A_VBUS_ERR) {
otg_ctrl = OTG_CTRL_REG;
printk(KERN_ERR "otg: %s, VBUS_ERR %04x ctrl %06x\n",
- state_name(isp), otg_irq, otg_ctrl);
+ otg_state_string(&isp->otg), otg_irq, otg_ctrl);
otg_ctrl |= OTG_BUSDROP;
otg_ctrl &= ~OTG_A_BUSREQ & OTG_CTRL_MASK & ~OTG_XCEIV_INPUTS;
@@ -781,7 +756,7 @@ static irqreturn_t omap_otg_irq(int irq, void *_isp)
otg_ctrl = OTG_CTRL_REG;
printk(KERN_NOTICE "otg: %s, SWITCH to %s, ctrl %06x\n",
- state_name(isp),
+ otg_state_string(&isp->otg),
(otg_ctrl & OTG_DRIVER_SEL)
? "gadget" : "host",
otg_ctrl);
@@ -864,7 +839,7 @@ static int otg_init(struct isp1301 *isp)
check_state(isp, __FUNCTION__);
pr_debug("otg: %s, %s %06x\n",
- state_name(isp), __FUNCTION__, OTG_CTRL_REG);
+ otg_state_string(&isp->otg), __FUNCTION__, OTG_CTRL_REG);
OTG_IRQ_EN_REG = DRIVER_SWITCH | OPRT_CHG
| B_SRP_TMROUT | B_HNP_FAIL
@@ -959,7 +934,7 @@ static void isp_update_otg(struct isp1301 *isp, u8 stat)
enum usb_otg_state state = isp->otg.state;
if (stat & INTR_BDIS_ACON)
- pr_debug("OTG: BDIS_ACON, %s\n", state_name(isp));
+ pr_debug("OTG: BDIS_ACON, %s\n", otg_state_string(&isp->otg));
/* start certain state transitions right away */
isp_stat = isp1301_get_u8(isp, ISP1301_INTERRUPT_SOURCE);
@@ -1071,14 +1046,13 @@ static void isp_update_otg(struct isp1301 *isp, u8 stat)
break;
default:
pr_debug("otg: unsupported b-device %s\n",
- state_name(isp));
+ otg_state_string(&isp->otg));
break;
}
}
if (state != isp->otg.state)
- pr_debug(" isp, %s -> %s\n",
- state_string(state), state_name(isp));
+ pr_debug(" isp %s\n", otg_state_string(&isp->otg));
#ifdef CONFIG_USB_OTG
/* update the OTG controller state to match the isp1301; may
@@ -1155,7 +1129,7 @@ isp1301_work(struct work_struct *work)
break;
default:
pr_debug(" host resume in %s\n",
- state_name(isp));
+ otg_state_string(&isp->otg));
}
host_resume(isp);
// mdelay(10);
@@ -1420,7 +1394,7 @@ isp1301_start_srp(struct otg_transceiver *dev)
OTG_CTRL_REG = otg_ctrl;
isp->otg.state = OTG_STATE_B_SRP_INIT;
- pr_debug("otg: SRP, %s ... %06x\n", state_name(isp), OTG_CTRL_REG);
+ pr_debug("otg: SRP, %s ... %06x\n", otg_state_string(&isp->otg), OTG_CTRL_REG);
#ifdef CONFIG_USB_OTG
check_state(isp, __FUNCTION__);
#endif
@@ -1472,7 +1446,7 @@ isp1301_start_hnp(struct otg_transceiver *dev)
return -EILSEQ;
}
pr_debug("otg: HNP %s, %06x ...\n",
- state_name(isp), OTG_CTRL_REG);
+ otg_state_string(&isp->otg), OTG_CTRL_REG);
check_state(isp, __FUNCTION__);
return 0;
#else
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index cf29bde..b333767 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -272,26 +272,6 @@ 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
/*
@@ -321,7 +301,7 @@ void musb_otg_timer_func(unsigned long data)
musb_hnp_stop(musb);
break;
default:
- DBG(1, "HNP: Unhandled mode %s\n", otg_state_string(musb));
+ DBG(1, "HNP: Unhandled mode %s\n", otg_state_string(&musb->xceiv));
}
musb->ignore_disconnect = 0;
spin_unlock_irqrestore(&musb->lock, flags);
@@ -360,7 +340,7 @@ void musb_hnp_stop(struct musb *musb)
break;
default:
DBG(1, "HNP: Stopping in unknown state %s\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
/*
@@ -405,7 +385,7 @@ 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));
+ DBG(3, "RESUME (%s)\n", otg_state_string(&musb->xceiv));
if (devctl & MUSB_DEVCTL_HM) {
#ifdef CONFIG_USB_MUSB_HDRC_HCD
@@ -444,7 +424,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
default:
WARN("bogus %s RESUME (%s)\n",
"host",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
#endif
} else {
@@ -478,7 +458,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
default:
WARN("bogus %s RESUME (%s)\n",
"peripheral",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
}
}
@@ -486,7 +466,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
#ifdef CONFIG_USB_MUSB_HDRC_HCD
/* see manual for the order of the tests */
if (int_usb & MUSB_INTR_SESSREQ) {
- DBG(1, "SESSION_REQUEST (%s)\n", otg_state_string(musb));
+ DBG(1, "SESSION_REQUEST (%s)\n", otg_state_string(&musb->xceiv));
/* IRQ arrives from ID pin sense or (later, if VBUS power
* is removed) SRP. responses are time critical:
@@ -549,7 +529,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
}
DBG(1, "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n",
- otg_state_string(musb),
+ otg_state_string(&musb->xceiv),
devctl,
({ char *s;
switch (devctl & MUSB_DEVCTL_VBUS) {
@@ -633,7 +613,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
break;
}
DBG(1, "CONNECT (%s) devctl %02x\n",
- otg_state_string(musb), devctl);
+ otg_state_string(&musb->xceiv), devctl);
}
#endif /* CONFIG_USB_MUSB_HDRC_HCD */
@@ -656,7 +636,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
musb_writeb(mbase, MUSB_DEVCTL, 0);
}
} else if (is_peripheral_capable()) {
- DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
+ DBG(1, "BUS RESET as %s\n", otg_state_string(&musb->xceiv));
switch (musb->xceiv.state) {
#ifdef CONFIG_USB_OTG
case OTG_STATE_A_SUSPEND:
@@ -665,7 +645,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
/* FALLTHROUGH */
case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */
DBG(1, "HNP: Setting timer as %s\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
musb_otg_timer.data = (unsigned long)musb;
mod_timer(&musb_otg_timer, jiffies
+ msecs_to_jiffies(100));
@@ -675,7 +655,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
break;
case OTG_STATE_B_WAIT_ACON:
DBG(1, "HNP: RESET (%s), back to b_peripheral\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
musb->xceiv.state = OTG_STATE_B_PERIPHERAL;
musb_g_reset(musb);
break;
@@ -688,7 +668,7 @@ static irqreturn_t musb_stage0_irq(struct musb * musb, u8 int_usb,
break;
default:
DBG(1, "Unhandled BUS RESET as %s\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
}
@@ -762,7 +742,7 @@ static irqreturn_t musb_stage2_irq(struct musb * musb, u8 int_usb,
if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) {
DBG(1, "DISCONNECT (%s) as %s, devctl %02x\n",
- otg_state_string(musb),
+ otg_state_string(&musb->xceiv),
MUSB_MODE(musb), devctl);
handled = IRQ_HANDLED;
@@ -795,7 +775,7 @@ static irqreturn_t musb_stage2_irq(struct musb * musb, u8 int_usb,
#endif /* GADGET */
default:
WARN("unhandled DISCONNECT transition (%s)\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
break;
}
@@ -804,7 +784,7 @@ static irqreturn_t musb_stage2_irq(struct musb * musb, u8 int_usb,
if (int_usb & MUSB_INTR_SUSPEND) {
DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
- otg_state_string(musb), devctl, power);
+ otg_state_string(&musb->xceiv), devctl, power);
handled = IRQ_HANDLED;
switch (musb->xceiv.state) {
@@ -1672,7 +1652,7 @@ 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));
spin_unlock_irqrestore(&musb->lock, flags);
return ret;
diff --git a/drivers/usb/musb/musb_debug.h b/drivers/usb/musb/musb_debug.h
index a9a0055..02731c3 100644
--- a/drivers/usb/musb/musb_debug.h
+++ b/drivers/usb/musb/musb_debug.h
@@ -61,6 +61,4 @@ static inline int _dbg_level(unsigned l)
#define DBG(level,fmt,args...) xprintk(level,KERN_DEBUG,fmt, ## args)
-extern const char *otg_state_string(struct musb *);
-
#endif /* __MUSB_LINUX_DEBUG_H__ */
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 0fb9635..aa24a54 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1431,7 +1431,7 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget)
status = 0;
goto done;
default:
- DBG(2, "Unhandled wake: %s\n", otg_state_string(musb));
+ DBG(2, "Unhandled wake: %s\n", otg_state_string(&musb->xceiv));
goto done;
}
@@ -1888,7 +1888,7 @@ void musb_g_resume(struct musb *musb)
break;
default:
WARN("unhandled RESUME transition (%s)\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
}
@@ -1918,7 +1918,7 @@ void musb_g_suspend(struct musb *musb)
* A_PERIPHERAL may need care too
*/
WARN("unhandled SUSPEND transition (%s)\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
}
@@ -1953,7 +1953,7 @@ void musb_g_disconnect(struct musb *musb)
default:
#ifdef CONFIG_USB_MUSB_OTG
DBG(2, "Unhandled disconnect %s, setting a_idle\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
musb->xceiv.state = OTG_STATE_A_IDLE;
break;
case OTG_STATE_A_PERIPHERAL:
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 2ad2ed9..1042ff2 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2122,7 +2122,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
if (is_host_active(musb) && musb->is_active) {
WARN("trying to suspend as %s is_active=%i\n",
- otg_state_string(musb), musb->is_active);
+ otg_state_string(&musb->xceiv), musb->is_active);
return -EBUSY;
} else
return 0;
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index 10b9089..d8e4918 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -95,7 +95,7 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend)
#endif
default:
DBG(1, "bogus rh suspend? %s\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
} else if (power & MUSB_POWER_SUSPENDM) {
power &= ~MUSB_POWER_SUSPENDM;
@@ -196,7 +196,7 @@ void musb_root_disconnect(struct musb *musb)
musb->xceiv.state = OTG_STATE_B_IDLE;
break;
default:
- DBG(1, "host disconnect (%s)\n", otg_state_string(musb));
+ DBG(1, "host disconnect (%s)\n", otg_state_string(&musb->xceiv));
}
}
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 3008b6d..15b7382 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -426,7 +426,7 @@ static void musb_do_idle(unsigned long _musb)
&& (musb->idle_timeout == 0
|| time_after(jiffies, musb->idle_timeout))) {
DBG(4, "Nothing connected %s, turning off VBUS\n",
- otg_state_string(musb));
+ otg_state_string(&musb->xceiv));
}
/* FALLTHROUGH */
case OTG_STATE_A_IDLE:
@@ -485,7 +485,7 @@ void musb_platform_try_idle(struct musb *musb, unsigned long 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));
+ DBG(4, "%s active, deleting timer\n", otg_state_string(&musb->xceiv));
del_timer(&musb_idle_timer);
last_timer = jiffies;
return;
@@ -502,7 +502,7 @@ void musb_platform_try_idle(struct musb *musb, unsigned long timeout)
last_timer = timeout;
DBG(4, "%s inactive, for idle timer for %lu ms\n",
- otg_state_string(musb),
+ otg_state_string(&musb->xceiv),
(unsigned long)jiffies_to_msecs(timeout - jiffies));
mod_timer(&musb_idle_timer, timeout);
}
@@ -581,7 +581,7 @@ static void tusb_source_power(struct musb *musb, int is_on)
musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
DBG(1, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n",
- otg_state_string(musb),
+ otg_state_string(&musb->xceiv),
musb_readb(musb->mregs, MUSB_DEVCTL),
musb_readl(tbase, TUSB_DEV_OTG_STAT),
conf, prcm);
@@ -707,13 +707,13 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
musb->is_active = 0;
}
DBG(2, "vbus change, %s, otg %03x\n",
- otg_state_string(musb), otg_stat);
+ otg_state_string(&musb->xceiv), otg_stat);
idle_timeout = jiffies + (1 * HZ);
schedule_work(&musb->irq_work);
} else /* A-dev state machine */ {
DBG(2, "vbus change, %s, otg %03x\n",
- otg_state_string(musb), otg_stat);
+ otg_state_string(&musb->xceiv), otg_stat);
switch (musb->xceiv.state) {
case OTG_STATE_A_IDLE:
@@ -761,7 +761,7 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
if (int_src & TUSB_INT_SRC_OTG_TIMEOUT) {
u8 devctl;
- DBG(4, "%s timer, %03x\n", otg_state_string(musb), otg_stat);
+ DBG(4, "%s timer, %03x\n", otg_state_string(&musb->xceiv), otg_stat);
switch (musb->xceiv.state) {
case OTG_STATE_A_WAIT_VRISE:
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 79c36fc..96a2e0f 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -142,6 +142,28 @@ otg_start_srp(struct otg_transceiver *otg)
return otg->start_srp(otg);
}
+/* pretty printing of otg states */
+static inline const char *
+otg_state_string(struct otg_transceiver *otg)
+{
+ switch (otg->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";
+ }
+}
+
/* for OTG controller drivers (and maybe other stuff) */
extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
--
1.5.4.rc5
-
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