SAMV6 USB updates

2 files changed, 40 insertions, 7 deletions

diff --git a/nuttx/arch/arm/include/samv7/samv71_irq.h b/nuttx/arch/arm/include/samv7/samv71_irq.h
index 221985679..34d9ab0c4 100644
--- a/nuttx/arch/arm/include/samv7/samv71_irq.h
+++ b/nuttx/arch/arm/include/samv7/samv71_irq.h
@@ -115,8 +115,12 @@
 #define SAM_PID_SDRAMC        (62)  /* SDRAM Controller */
 #define SAM_PID_WDT1          (63)  /* Watchdog Timer 1 */
 #define SAM_PID_CCW           (64)  /* ARM Cache ECC Warning */
+#define SAM_PID_CCF           (65)  /* ARM Cache ECC Fault */
+#define SAM_PID_EMACQ1        (66)  /* EMAC Queue 1 Interrupt */
+#define SAM_PID_EMACQ2        (67)  /* EMAC Queue 2 Interrupt */
+#define SAM_PID_FPIXC         (68)  /* ARM Cache ECC Warning */
 
-#define NR_PIDS               (65)  /* Number of peripheral identifiers */
+#define NR_PIDS               (69)  /* Number of peripheral identifiers */
 
 /* External interrupts (priority levels >= 256*/
 
@@ -185,6 +189,10 @@
 #define SAM_IRQ_SDRAMC        (SAM_IRQ_EXTINT+SAM_PID_SDRAMC) /* SDRAM Controller */
 #define SAM_IRQ_WDT1          (SAM_IRQ_EXTINT+SAM_PID_WDT1)   /* Watchdog Timer 1 */
 #define SAM_IRQ_CCW           (SAM_IRQ_EXTINT+SAM_PID_CCW)    /* ARM Cache ECC Warning */
+#define SAM_IRQ_CCF           (SAM_IRQ_EXTINT+SAM_PID_CCF)    /* ARM Cache ECC Fault */
+#define SAM_IRQ_EMACQ1        (SAM_IRQ_EXTINT+SAM_PID_EMACQ1) /* EMAC Queue 1 Interrupt */
+#define SAM_IRQ_EMACQ2        (SAM_IRQ_EXTINT+SAM_PID_EMACQ2) /* EMAC Queue 2 Interrupt */
+#define SAM_IRQ_FPIXC         (SAM_IRQ_EXTINTSAM_PID_FPIXC+)  /* ARM Cache ECC Warning */
 
 #define SAM_IRQ_NEXTINT       NR_PIDS                         /* Total number of external interrupt numbers */
 #define SAM_IRQ_NIRQS         (SAM_IRQ_EXTINT+NR_PIDS)        /* The number of real IRQs */
diff --git a/nuttx/arch/arm/src/samv7/sam_usbdevhs.c b/nuttx/arch/arm/src/samv7/sam_usbdevhs.c
index c71e11d43..7dc7c9a1b 100644
--- a/nuttx/arch/arm/src/samv7/sam_usbdevhs.c
+++ b/nuttx/arch/arm/src/samv7/sam_usbdevhs.c
@@ -4176,10 +4176,34 @@ static int sam_pullup(FAR struct usbdev_s *dev, bool enable)
        * connections.
        *
        * If there is no host connected (no bus activity), then we might
-       * get a SUSPend interrupt instead of a End of Reset.
+       * get a SUSPend interrupt instead of a End of Reset.  In the case, we
+       * would like to keep the clock frozen until the host is connected.
+       *
+       * The strategy here was taken from the SAMV7 sample code:   It will
+       * force a SUSPend event.  Then disable clocking.  We will take the
+       * SUSPend interrupt (because it is already pending), but after the
+       * clock is frozen, only a WAKEUP interrupt can be received.
        */
 
-      sam_putreg(USBHS_DEVINT_EORST | USBHS_DEVINT_SUSPD, SAM_USBHS_DEVIER);
+      /* Enable expected interrupts */
+
+      sam_putreg(USBHS_DEVINT_EORST | USBHS_DEVINT_WAKEUP | USBHS_DEVINT_SUSPD,
+                 SAM_USBHS_DEVIER);
+
+      /* Clear pending interrupt interrupts */
+
+      sam_putreg(USBHS_DEVINT_EORST | USBHS_DEVINT_SUSPD, SAM_USBHS_DEVICR);
+
+      /* Force the first suspend event */
+
+      sam_putreg(USBHS_DEVINT_SUSPD, SAM_USBHS_DEVIFR);
+      sam_putreg(USBHS_DEVINT_WAKEUP, SAM_USBHS_DEVICR);
+
+      /* Refreeze the clock and wait for the wakeup event */
+
+      regval  = sam_getreg(SAM_USBHS_CTRL);
+      regval |= USBHS_CTRL_FRZCLK;
+      sam_putreg(regval, SAM_USBHS_CTRL);
     }
   else
     {
@@ -4333,15 +4357,15 @@ static void sam_hw_setup(struct sam_usbdev_s *priv)
    * unfreeze clocking (FRZCLK = 0)
    */
 
-  regval &= ~USBHS_CTRL_FRZCLK;
-  sam_putreg(regval, SAM_USBHS_CTRL);
-
   regval |= USBHS_CTRL_USBE;
   sam_putreg(regval, SAM_USBHS_CTRL);
 
   regval |= USBHS_CTRL_UIMOD_DEVICE;
   sam_putreg(regval, SAM_USBHS_CTRL);
 
+  regval &= ~USBHS_CTRL_FRZCLK;
+  sam_putreg(regval, SAM_USBHS_CTRL);
+
   /* Select High Speed */
 
   regval  = sam_getreg(SAM_USBHS_DEVCTRL);
@@ -4359,9 +4383,10 @@ static void sam_hw_setup(struct sam_usbdev_s *priv)
   regval &= ~USBHS_DEVCTRL_LS;
   sam_putreg(regval, SAM_USBHS_DEVCTRL);
 
-  /* Reset and disable all endpoints (including endpoint 0) */
+  /* Reset and disable all endpoints, initializing endpoint 0. */
 
   sam_epset_reset(priv, SAM_EPSET_ALL);
+  sam_ep0_configure(priv);
 
   /* Disconnect the device */