static int ehci_hub_control (
struct usb_hcd *hcd,
u16 typeReq,
u16 wValue,
u16 wIndex,
char *buf,
u16 wLength
) {
struct ehci_hcd *ehci = hcd_to_ehci (hcd);
int ports = HCS_N_PORTS (ehci->hcs_params);
u32 temp, status;
unsigned long flags;
int retval = 0;
/*
* FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR.
* HCS_INDICATOR may say we can change LEDs to off/amber/green.
* (track current state ourselves) ... blink for diagnostics,
* power, "this is the one", etc. EHCI spec supports this.
*/
spin_lock_irqsave (&ehci->lock, flags);
switch (typeReq) {
case ClearHubFeature:
switch (wValue) {
case C_HUB_LOCAL_POWER:
case C_HUB_OVER_CURRENT:
/* no hub-wide feature/status flags */
break;
default:
goto error;
}
break;
case ClearPortFeature:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
temp = readl (&ehci->regs->port_status [wIndex]);
if (temp & PORT_OWNER)
break;
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
writel (temp & ~PORT_PE,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_ENABLE:
writel (temp | PORT_PEC,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_SUSPEND:
case USB_PORT_FEAT_C_SUSPEND:
/* ? */
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC (ehci->hcs_params))
writel (temp & ~PORT_POWER,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_CONNECTION:
writel (temp | PORT_CSC,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_OVER_CURRENT:
writel (temp | PORT_OCC,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_RESET:
/* GetPortStatus clears reset */
break;
default:
goto error;
}
readl (&ehci->regs->command); /* unblock posted write */
break;
case GetHubDescriptor:
ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *)
buf);
break;
case GetHubStatus:
/* no hub-wide feature/status flags */
memset (buf, 0, 4);
//cpu_to_le32s ((u32 *) buf);
break;
case GetPortStatus:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
status = 0;
temp = readl (&ehci->regs->port_status [wIndex]);
// wPortChange bits
if (temp & PORT_CSC)
status |= 1 << USB_PORT_FEAT_C_CONNECTION;
if (temp & PORT_PEC)
status |= 1 << USB_PORT_FEAT_C_ENABLE;
// USB_PORT_FEAT_C_SUSPEND
if (temp & PORT_OCC)
status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT;
/* whoever resets must GetPortStatus to complete it!! */
if ((temp & PORT_RESET)
&& time_after (jiffies,
ehci->reset_done [wIndex])) {
status |= 1 << USB_PORT_FEAT_C_RESET;
/* force reset to complete */
writel (temp & ~PORT_RESET,
&ehci->regs->port_status [wIndex]);
do {
temp = readl (
&ehci->regs->port_status [wIndex]);
udelay (10);
} while (temp & PORT_RESET);
/* see what we found out */
temp = check_reset_complete (ehci, wIndex, temp);
}
// don't show wPortStatus if it's owned by a companion hc
if (!(temp & PORT_OWNER)) {
if (temp & PORT_CONNECT) {
status |= 1 << USB_PORT_FEAT_CONNECTION;
status |= 1 << USB_PORT_FEAT_HIGHSPEED;
}
if (temp & PORT_PE)
status |= 1 << USB_PORT_FEAT_ENABLE;
if (temp & PORT_SUSPEND)
status |= 1 << USB_PORT_FEAT_SUSPEND;
if (temp & PORT_OC)
status |= 1 << USB_PORT_FEAT_OVER_CURRENT;
if (temp & PORT_RESET)
status |= 1 << USB_PORT_FEAT_RESET;
if (temp & PORT_POWER)
status |= 1 << USB_PORT_FEAT_POWER;
}
#ifndef EHCI_VERBOSE_DEBUG
if (status & ~0xffff) /* only if wPortChange is interesting */
#endif
// dbg_port (ehci, "GetStatus", wIndex + 1, temp); // FIXME: for rtl8652 using... if you don't using rtl8652 EHCI driver, please enable this function.
// we "know" this alignment is good, caller used kmalloc()...
*((u32 *) buf) = cpu_to_le32 (status);
break;
case SetHubFeature:
switch (wValue) {
case C_HUB_LOCAL_POWER:
case C_HUB_OVER_CURRENT:
/* no hub-wide feature/status flags */
break;
default:
goto error;
}
break;
case SetPortFeature:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
temp = readl (&ehci->regs->port_status [wIndex]);
if (temp & PORT_OWNER)
break;
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
writel (temp | PORT_SUSPEND,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC (ehci->hcs_params))
writel (temp | PORT_POWER,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_RESET:
/* line status bits may report this as low speed */
if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT
&& PORT_USB11 (temp)) {
ehci_dbg (ehci,
"port %d low speed --> companion\n",
wIndex + 1);
temp |= PORT_OWNER;
} else {
ehci_vdbg (ehci, "port %d reset\n", wIndex + 1);
temp |= PORT_RESET;
temp &= ~PORT_PE;
/*
* caller must wait, then call GetPortStatus
* usb 2.0 spec says 50 ms resets on root
*/
ehci->reset_done [wIndex] = jiffies
+ ((50 /* msec */ * HZ) / 1000);
}
writel (temp, &ehci->regs->port_status [wIndex]);
break;
default:
goto error;
}
readl (&ehci->regs->command); /* unblock posted writes */
break;
default:
error:
/* "stall" on error */
retval = -EPIPE;
}
spin_unlock_irqrestore (&ehci->lock, flags);
return retval;
}
static int ehci_hub_control (
struct usb_hcd *hcd,
u16 typeReq,
u16 wValue,
u16 wIndex,
char *buf,
u16 wLength
) {
struct ehci_hcd *ehci = hcd_to_ehci (hcd);
int ports = HCS_N_PORTS (ehci->hcs_params);
u32 temp, status;
unsigned long flags;
int retval = 0;
/*
* FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR.
* HCS_INDICATOR may say we can change LEDs to off/amber/green.
* (track current state ourselves) ... blink for diagnostics,
* power, "this is the one", etc. EHCI spec supports this.
*/
spin_lock_irqsave (&ehci->lock, flags);
switch (typeReq) {
case ClearHubFeature:
switch (wValue) {
case C_HUB_LOCAL_POWER:
case C_HUB_OVER_CURRENT:
/* no hub-wide feature/status flags */
break;
default:
goto error;
}
break;
case ClearPortFeature:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
temp = readl (&ehci->regs->port_status [wIndex]);
if (temp & PORT_OWNER)
break;
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
writel (temp & ~PORT_PE,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_ENABLE:
writel((temp & ~PORT_RWC_BITS) | PORT_PEC,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_SUSPEND:
if (temp & PORT_RESET)
goto error;
if (temp & PORT_SUSPEND) {
if ((temp & PORT_PE) == 0)
goto error;
/* resume signaling for 20 msec */
temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
writel (temp | PORT_RESUME,
&ehci->regs->port_status [wIndex]);
ehci->reset_done [wIndex] = jiffies
+ msecs_to_jiffies (20);
}
break;
case USB_PORT_FEAT_C_SUSPEND:
/* we auto-clear this feature */
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC (ehci->hcs_params))
writel (temp & ~(PORT_RWC_BITS | PORT_POWER),
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_CONNECTION:
writel((temp & ~PORT_RWC_BITS) | PORT_CSC,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_OVER_CURRENT:
writel((temp & ~PORT_RWC_BITS) | PORT_OCC,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_C_RESET:
/* GetPortStatus clears reset */
break;
default:
goto error;
}
readl (&ehci->regs->command); /* unblock posted write */
break;
case GetHubDescriptor:
ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *)
buf);
break;
case GetHubStatus:
/* no hub-wide feature/status flags */
memset (buf, 0, 4);
//cpu_to_le32s ((u32 *) buf);
break;
case GetPortStatus:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
status = 0;
temp = readl (&ehci->regs->port_status [wIndex]);
// wPortChange bits
if (temp & PORT_CSC)
status |= 1 << USB_PORT_FEAT_C_CONNECTION;
if (temp & PORT_PEC)
status |= 1 << USB_PORT_FEAT_C_ENABLE;
if (temp & PORT_OCC)
status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT;
/* whoever resumes must GetPortStatus to complete it!! */
if ((temp & PORT_RESUME)
&& time_after (jiffies,
ehci->reset_done [wIndex])) {
status |= 1 << USB_PORT_FEAT_C_SUSPEND;
ehci->reset_done [wIndex] = 0;
/* stop resume signaling */
temp = readl (&ehci->regs->port_status [wIndex]);
writel (temp & ~(PORT_RWC_BITS | PORT_RESUME),
&ehci->regs->port_status [wIndex]);
retval = handshake (
&ehci->regs->port_status [wIndex],
PORT_RESUME, 0, 2000 /* 2msec */);
if (retval != 0) {
ehci_err (ehci, "port %d resume error %d\n",
wIndex + 1, retval);
goto error;
}
temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
}
/* whoever resets must GetPortStatus to complete it!! */
if ((temp & PORT_RESET)
&& time_after (jiffies,
ehci->reset_done [wIndex])) {
status |= 1 << USB_PORT_FEAT_C_RESET;
ehci->reset_done [wIndex] = 0;
/* force reset to complete */
writel (temp & ~(PORT_RWC_BITS | PORT_RESET),
&ehci->regs->port_status [wIndex]);
/* REVISIT: some hardware needs 550+ usec to clear
* this bit; seems too long to spin routinely...
*/
retval = handshake (
&ehci->regs->port_status [wIndex],
PORT_RESET, 0, 750);
if (retval != 0) {
ehci_err (ehci, "port %d reset error %d\n",
wIndex + 1, retval);
goto error;
}
/* see what we found out */
temp = check_reset_complete (ehci, wIndex,
readl (&ehci->regs->port_status [wIndex]));
}
// don't show wPortStatus if it's owned by a companion hc
if (!(temp & PORT_OWNER)) {
if (temp & PORT_CONNECT) {
status |= 1 << USB_PORT_FEAT_CONNECTION;
// status may be from integrated TT
status |= ehci_port_speed(ehci, temp);
}
if (temp & PORT_PE)
status |= 1 << USB_PORT_FEAT_ENABLE;
if (temp & (PORT_SUSPEND|PORT_RESUME))
status |= 1 << USB_PORT_FEAT_SUSPEND;
if (temp & PORT_OC)
status |= 1 << USB_PORT_FEAT_OVER_CURRENT;
if (temp & PORT_RESET)
status |= 1 << USB_PORT_FEAT_RESET;
if (temp & PORT_POWER)
status |= 1 << USB_PORT_FEAT_POWER;
}
#ifndef EHCI_VERBOSE_DEBUG
if (status & ~0xffff) /* only if wPortChange is interesting */
#endif
dbg_port (ehci, "GetStatus", wIndex + 1, temp);
// we "know" this alignment is good, caller used kmalloc()...
*((__le32 *) buf) = cpu_to_le32 (status);
break;
case SetHubFeature:
switch (wValue) {
case C_HUB_LOCAL_POWER:
case C_HUB_OVER_CURRENT:
/* no hub-wide feature/status flags */
break;
default:
goto error;
}
break;
case SetPortFeature:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
temp = readl (&ehci->regs->port_status [wIndex]);
if (temp & PORT_OWNER)
break;
temp &= ~PORT_RWC_BITS;
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
if ((temp & PORT_PE) == 0
|| (temp & PORT_RESET) != 0)
goto error;
if (hcd->remote_wakeup)
temp |= PORT_WAKE_BITS;
writel (temp | PORT_SUSPEND,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_POWER:
if (HCS_PPC (ehci->hcs_params))
writel (temp | PORT_POWER,
&ehci->regs->port_status [wIndex]);
break;
case USB_PORT_FEAT_RESET:
if (temp & PORT_RESUME)
goto error;
/* line status bits may report this as low speed,
* which can be fine if this root hub has a
* transaction translator built in.
*/
if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT
&& !ehci_is_TDI(ehci)
&& PORT_USB11 (temp)) {
ehci_dbg (ehci,
"port %d low speed --> companion\n",
wIndex + 1);
temp |= PORT_OWNER;
} else {
ehci_vdbg (ehci, "port %d reset\n", wIndex + 1);
temp |= PORT_RESET;
temp &= ~PORT_PE;
/*
* caller must wait, then call GetPortStatus
* usb 2.0 spec says 50 ms resets on root
*/
ehci->reset_done [wIndex] = jiffies
+ msecs_to_jiffies (50);
}
writel (temp, &ehci->regs->port_status [wIndex]);
break;
default:
goto error;
}
readl (&ehci->regs->command); /* unblock posted writes */
break;
default:
error:
/* "stall" on error */
retval = -EPIPE;
}
spin_unlock_irqrestore (&ehci->lock, flags);
return retval;
}
static int omap_ehci_hub_control(
struct usb_hcd *hcd,
u16 typeReq,
u16 wValue,
u16 wIndex,
char *buf,
u16 wLength
) {
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
u32 __iomem *status_reg = &ehci->regs->port_status[
(wIndex & 0xff) - 1];
u32 __iomem *hostpc_reg = NULL;
u32 temp, temp1, status;
unsigned long flags;
int retval = 0;
u32 runstop, temp_reg;
spin_lock_irqsave(&ehci->lock, flags);
switch (typeReq) {
case GetPortStatus:
wIndex--;
status = 0;
temp = ehci_readl(ehci, status_reg);
/* wPortChange bits */
if (temp & PORT_CSC)
status |= USB_PORT_STAT_C_CONNECTION << 16;
if (temp & PORT_PEC)
status |= USB_PORT_STAT_C_ENABLE << 16;
if ((temp & PORT_OCC) && !ignore_oc) {
status |= USB_PORT_STAT_C_OVERCURRENT << 16;
/*
* Hubs should disable port power on over-current.
* However, not all EHCI implementations do this
* automatically, even if they _do_ support per-port
* power switching; they're allowed to just limit the
* current. khubd will turn the power back on.
*/
if (HCS_PPC(ehci->hcs_params)) {
ehci_writel(ehci,
temp & ~(PORT_RWC_BITS | PORT_POWER),
status_reg);
}
}
/* whoever resumes must GetPortStatus to complete it!! */
if (temp & PORT_RESUME) {
/* Remote Wakeup received? */
if (!ehci->reset_done[wIndex]) {
/* resume signaling for 20 msec */
ehci->reset_done[wIndex] = jiffies
+ msecs_to_jiffies(20);
/* check the port again */
mod_timer(&ehci_to_hcd(ehci)->rh_timer,
ehci->reset_done[wIndex]);
}
/* resume completed? */
else if (time_after_eq(jiffies,
ehci->reset_done[wIndex])) {
clear_bit(wIndex, &ehci->suspended_ports);
set_bit(wIndex, &ehci->port_c_suspend);
ehci->reset_done[wIndex] = 0;
/*
* Workaround for OMAP errata:
* To Stop Resume Signalling, it is required
* to Stop the Host Controller and disable the
* TLL Functional Clock.
*/
/* Stop the Host Controller */
runstop = ehci_readl(ehci,
&ehci->regs->command);
ehci_writel(ehci, (runstop & ~CMD_RUN),
&ehci->regs->command);
(void) ehci_readl(ehci, &ehci->regs->command);
handshake(ehci, &ehci->regs->status,
STS_HALT,
STS_HALT,
2000);
temp_reg = omap_readl(L3INIT_HSUSBTLL_CLKCTRL);
temp_reg &= ~(1 << 9);
/* stop resume signaling */
temp = ehci_readl(ehci, status_reg);
ehci_writel(ehci,
temp & ~(PORT_RWC_BITS | PORT_RESUME),
status_reg);
/* Disable the Channel 1 Optional Fclk */
omap_writel(temp_reg, L3INIT_HSUSBTLL_CLKCTRL);
retval = handshake(ehci, status_reg,
PORT_RESUME, 0, 2000 /* 2msec */);
/*
* Enable the Host Controller and start the
* Channel 1 Optional Fclk since resume has
* finished.
*/
udelay(2);
omap_writel((temp_reg | (1 << 9)),
L3INIT_HSUSBTLL_CLKCTRL);
ehci_writel(ehci, (runstop),
&ehci->regs->command);
(void) ehci_readl(ehci, &ehci->regs->command);
if (retval != 0) {
ehci_err(ehci,
"port %d resume error %d\n",
wIndex + 1, retval);
spin_unlock_irqrestore(&ehci->lock,
flags);
return -EPIPE;
}
temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
}
}
/* whoever resets must GetPortStatus to complete it!! */
if ((temp & PORT_RESET)
&& time_after_eq(jiffies,
ehci->reset_done[wIndex])) {
status |= USB_PORT_STAT_C_RESET << 16;
ehci->reset_done[wIndex] = 0;
/* force reset to complete */
ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET),
status_reg);
/* REVISIT: some hardware needs 550+ usec to clear
* this bit; seems too long to spin routinely...
*/
retval = handshake(ehci, status_reg,
PORT_RESET, 0, 1000);
if (retval != 0) {
ehci_err(ehci, "port %d reset error %d\n",
wIndex + 1, retval);
spin_unlock_irqrestore(&ehci->lock, flags);
return -EPIPE;
}
/* see what we found out */
temp = check_reset_complete(ehci, wIndex, status_reg,
ehci_readl(ehci, status_reg));
}
if (!(temp & (PORT_RESUME|PORT_RESET)))
ehci->reset_done[wIndex] = 0;
/* transfer dedicated ports to the companion hc */
if ((temp & PORT_CONNECT) &&
test_bit(wIndex, &ehci->companion_ports)) {
temp &= ~PORT_RWC_BITS;
temp |= PORT_OWNER;
ehci_writel(ehci, temp, status_reg);
ehci_dbg(ehci, "port %d --> companion\n", wIndex + 1);
temp = ehci_readl(ehci, status_reg);
}
/*
* Even if OWNER is set, there's no harm letting khubd
* see the wPortStatus values (they should all be 0 except
* for PORT_POWER anyway).
*/
if (temp & PORT_CONNECT) {
status |= USB_PORT_STAT_CONNECTION;
/* status may be from integrated TT */
if (ehci->has_hostpc) {
temp1 = ehci_readl(ehci, hostpc_reg);
status |= ehci_port_speed(ehci, temp1);
} else
status |= ehci_port_speed(ehci, temp);
}
if (temp & PORT_PE)
status |= USB_PORT_STAT_ENABLE;
/* maybe the port was unsuspended without our knowledge */
if (temp & (PORT_SUSPEND|PORT_RESUME)) {
status |= USB_PORT_STAT_SUSPEND;
} else if (test_bit(wIndex, &ehci->suspended_ports)) {
clear_bit(wIndex, &ehci->suspended_ports);
ehci->reset_done[wIndex] = 0;
if (temp & PORT_PE)
set_bit(wIndex, &ehci->port_c_suspend);
}
if (temp & PORT_OC)
status |= USB_PORT_STAT_OVERCURRENT;
if (temp & PORT_RESET)
status |= USB_PORT_STAT_RESET;
if (temp & PORT_POWER)
status |= USB_PORT_STAT_POWER;
if (test_bit(wIndex, &ehci->port_c_suspend))
status |= USB_PORT_STAT_C_SUSPEND << 16;
#ifndef VERBOSE_DEBUG
if (status & ~0xffff) /* only if wPortChange is interesting */
#endif
dbg_port(ehci, "GetStatus", wIndex + 1, temp);
put_unaligned_le32(status, buf);
break;
default:
spin_unlock_irqrestore(&ehci->lock, flags);
retval = ehci_hub_control(hcd, typeReq, wValue, wIndex,
buf, wLength);
spin_lock_irqsave(&ehci->lock, flags);
}
spin_unlock_irqrestore(&ehci->lock, flags);
return retval;
}