Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6

1 files changed, 33 insertions, 55 deletions

diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 75128c371800..41bbae83fc71 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -83,7 +83,7 @@
 #include "../core/hcd.h"
 #include "isp116x.h"
 
-#define DRIVER_VERSION  "08 Apr 2005"
+#define DRIVER_VERSION  "05 Aug 2005"
 #define DRIVER_DESC     "ISP116x USB Host Controller Driver"
 
 MODULE_DESCRIPTION(DRIVER_DESC);
@@ -629,14 +629,12 @@ static irqreturn_t isp116x_irq(struct usb_hcd *hcd, struct pt_regs *regs)
                         ERR("Unrecoverable error\n");
                         /* What should we do here? Reset?  */
                 }
-                if (intstat & HCINT_RHSC) {
-                        isp116x->rhstatus =
-                            isp116x_read_reg32(isp116x, HCRHSTATUS);
-                        isp116x->rhport[0] =
-                            isp116x_read_reg32(isp116x, HCRHPORT1);
-                        isp116x->rhport[1] =
-                            isp116x_read_reg32(isp116x, HCRHPORT2);
-                }
+                if (intstat & HCINT_RHSC)
+                        /* When root hub or any of its ports is going
+                           to come out of suspend, it may take more
+                           than 10ms for status bits to stabilize. */
+                        mod_timer(&hcd->rh_timer, jiffies
+                                  + msecs_to_jiffies(20) + 1);
                 if (intstat & HCINT_RD) {
                         DBG("---- remote wakeup\n");
                         schedule_work(&isp116x->rh_resume);
@@ -925,20 +923,27 @@ static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf)
 {
         struct isp116x *isp116x = hcd_to_isp116x(hcd);
         int ports, i, changed = 0;
+        unsigned long flags;
 
         if (!HC_IS_RUNNING(hcd->state))
                 return -ESHUTDOWN;
 
-        ports = isp116x->rhdesca & RH_A_NDP;
+        /* Report no status change now, if we are scheduled to be
+           called later */
+        if (timer_pending(&hcd->rh_timer))
+                return 0;
 
-        /* init status */
+        ports = isp116x->rhdesca & RH_A_NDP;
+        spin_lock_irqsave(&isp116x->lock, flags);
+        isp116x->rhstatus = isp116x_read_reg32(isp116x, HCRHSTATUS);
         if (isp116x->rhstatus & (RH_HS_LPSC | RH_HS_OCIC))
                 buf[0] = changed = 1;
         else
                 buf[0] = 0;
 
         for (i = 0; i < ports; i++) {
-                u32 status = isp116x->rhport[i];
+                u32 status = isp116x->rhport[i] =
+                    isp116x_read_reg32(isp116x, i ? HCRHPORT2 : HCRHPORT1);
 
                 if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC
                               | RH_PS_OCIC | RH_PS_PRSC)) {
@@ -947,6 +952,7 @@ static int isp116x_hub_status_data(struct usb_hcd *hcd, char *buf)
                         continue;
                 }
         }
+        spin_unlock_irqrestore(&isp116x->lock, flags);
         return changed;
 }
 
@@ -1463,10 +1469,6 @@ static int isp116x_sw_reset(struct isp116x *isp116x)
         return ret;
 }
 
-/*
-  Reset. Tries to perform platform-specific hardware
-  reset first; falls back to software reset.
-*/
 static int isp116x_reset(struct usb_hcd *hcd)
 {
         struct isp116x *isp116x = hcd_to_isp116x(hcd);
@@ -1474,17 +1476,7 @@ static int isp116x_reset(struct usb_hcd *hcd)
         u16 clkrdy = 0;
         int ret = 0, timeout = 15 /* ms */ ;
 
-        if (isp116x->board && isp116x->board->reset) {
-                /* Hardware reset */
-                isp116x->board->reset(hcd->self.controller, 1);
-                msleep(10);
-                if (isp116x->board->clock)
-                        isp116x->board->clock(hcd->self.controller, 1);
-                msleep(1);
-                isp116x->board->reset(hcd->self.controller, 0);
-        } else
-                ret = isp116x_sw_reset(isp116x);
-
+        ret = isp116x_sw_reset(isp116x);
         if (ret)
                 return ret;
 
@@ -1501,10 +1493,7 @@ static int isp116x_reset(struct usb_hcd *hcd)
                 ERR("Clock not ready after 20ms\n");
                 /* After sw_reset the clock won't report to be ready, if
                    H_WAKEUP pin is high. */
-                if (!isp116x->board || !isp116x->board->reset)
-                        ERR("The driver does not support hardware wakeup.\n");
-                        ERR("Please make sure that the H_WAKEUP pin "
-                                "is pulled low!\n");
+                ERR("Please make sure that the H_WAKEUP pin is pulled low!\n");
                 ret = -ENODEV;
         }
         return ret;
@@ -1527,15 +1516,7 @@ static void isp116x_stop(struct usb_hcd *hcd)
         isp116x_write_reg32(isp116x, HCRHSTATUS, RH_HS_LPS);
         spin_unlock_irqrestore(&isp116x->lock, flags);
 
-        /* Put the chip into reset state */
-        if (isp116x->board && isp116x->board->reset)
-                isp116x->board->reset(hcd->self.controller, 0);
-        else
-                isp116x_sw_reset(isp116x);
-
-        /* Stop the clock */
-        if (isp116x->board && isp116x->board->clock)
-                isp116x->board->clock(hcd->self.controller, 0);
+        isp116x_sw_reset(isp116x);
 }
 
 /*
@@ -1561,6 +1542,9 @@ static int isp116x_start(struct usb_hcd *hcd)
                 return -ENODEV;
         }
 
+        /* To be removed in future */
+        hcd->uses_new_polling = 1;
+
         isp116x_write_reg16(isp116x, HCITLBUFLEN, ISP116x_ITL_BUFSIZE);
         isp116x_write_reg16(isp116x, HCATLBUFLEN, ISP116x_ATL_BUFSIZE);
 
@@ -1569,7 +1553,7 @@ static int isp116x_start(struct usb_hcd *hcd)
         if (board->sel15Kres)
                 val |= HCHWCFG_15KRSEL;
         /* Remote wakeup won't work without working clock */
-        if (board->clknotstop || board->remote_wakeup_enable)
+        if (board->remote_wakeup_enable)
                 val |= HCHWCFG_CLKNOTSTOP;
         if (board->oc_enable)
                 val |= HCHWCFG_ANALOG_OC;
@@ -1580,16 +1564,13 @@ static int isp116x_start(struct usb_hcd *hcd)
         isp116x_write_reg16(isp116x, HCHWCFG, val);
 
         /* ----- Root hub conf */
-        val = 0;
-        /* AN10003_1.pdf recommends NPS to be always 1 */
-        if (board->no_power_switching)
-                val |= RH_A_NPS;
-        if (board->power_switching_mode)
-                val |= RH_A_PSM;
-        if (board->potpg)
-                val |= (board->potpg << 24) & RH_A_POTPGT;
-        else
-                val |= (25 << 24) & RH_A_POTPGT;
+        val = (25 << 24) & RH_A_POTPGT;
+        /* AN10003_1.pdf recommends RH_A_NPS (no power switching) to
+           be always set. Yet, instead, we request individual port
+           power switching. */
+        val |= RH_A_PSM;
+        /* Report overcurrent per port */
+        val |= RH_A_OCPM;
         isp116x_write_reg32(isp116x, HCRHDESCA, val);
         isp116x->rhdesca = isp116x_read_reg32(isp116x, HCRHDESCA);
 
@@ -1619,9 +1600,6 @@ static int isp116x_start(struct usb_hcd *hcd)
 
         /* Go operational */
         val = HCCONTROL_USB_OPER;
-        /* Remote wakeup connected - NOT SUPPORTED */
-        /*  if (board->remote_wakeup_connected)
-           val |= HCCONTROL_RWC;  */
         if (board->remote_wakeup_enable)
                 val |= HCCONTROL_RWE;
         isp116x_write_reg32(isp116x, HCCONTROL, val);
@@ -1670,7 +1648,7 @@ static int __init_or_module isp116x_remove(struct device *dev)
         struct platform_device *pdev;
         struct resource *res;
 
-        if(!hcd)
+        if (!hcd)
                 return 0;
         isp116x = hcd_to_isp116x(hcd);
         pdev = container_of(dev, struct platform_device, dev);