Use bus reset detection for all ARC OTG devices. Remove conflict from LV24020LP driver with some GPIO-by-number macros for PP502x. Start monitoring for USB stack once all core threads and queues are created otherwise queues will likely be registered after USB acks. Putting PP502x system_reboot in IRAM (unmapped, uncached) memory seems to help it work more consistently. Hopefully I got all the PP USB connect handlers in the right spot in irq_handler. If device seems unresponsive to cable, check there first.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19819 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 17 insertions, 12 deletions

diff --git a/firmware/target/arm/imx31/gigabeat-s/usb-imx31.c b/firmware/target/arm/imx31/gigabeat-s/usb-imx31.c
index c0d7cb8d2a..99f3e072eb 100644
--- a/firmware/target/arm/imx31/gigabeat-s/usb-imx31.c
+++ b/firmware/target/arm/imx31/gigabeat-s/usb-imx31.c
@@ -53,14 +53,19 @@ static void enable_transceiver(bool enable)
     }
 }
 
+/* Read the immediate state of the cable from the PMIC */
+bool usb_plugged(void)
+{
+    return mc13783_read(MC13783_INTERRUPT_SENSE0) & MC13783_USB4V4S;
+}
+
 void usb_connect_event(void)
 {
-    uint32_t status = mc13783_read(MC13783_INTERRUPT_SENSE0);
-    usb_status = (status & MC13783_USB4V4S) ?
-        USB_INSERTED : USB_EXTRACTED;
+    int status = usb_plugged() ? USB_INSERTED : USB_EXTRACTED;
+    usb_status = status;
     /* Notify power that USB charging is potentially available */
-    charger_usb_detect_event(usb_status);
-    usb_status_event(usb_status);
+    charger_usb_detect_event(status);
+    usb_status_event((status == USB_INSERTED) ? USB_POWERED : USB_UNPOWERED);
 }
 
 int usb_detect(void)
@@ -68,12 +73,6 @@ int usb_detect(void)
     return usb_status;
 }
 
-/* Read the immediate state of the cable from the PMIC */
-bool usb_plugged(void)
-{
-    return mc13783_read(MC13783_INTERRUPT_SENSE0) & MC13783_USB4V4S;
-}
-
 void usb_init_device(void)
 {
     /* Do one-time inits */
@@ -107,7 +106,7 @@ void usb_enable(bool on)
 
 void usb_attach(void)
 {
-    usb_enable(true);
+    usb_drv_attach();
 }
 
 static void __attribute__((interrupt("IRQ"))) USB_OTG_HANDLER(void)
@@ -122,3 +121,9 @@ void usb_drv_int_enable(bool enable)
     else    
         avic_disable_int(USB_OTG);
 }
+
+/* Called during the bus reset interrupt when in detect mode */
+void usb_drv_usb_detect_event(void)
+{
+    usb_status_event(USB_INSERTED);
+}