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This should take care of resetting when unplugging on e200 as reported in FS#9812. Be sure VBUS is valid before posting insert message as a spurious reset can occur. It seems to fix it for me (tested by insulating D+/D- pins).

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19800 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2009-01-19 19:23:59 +00:00
parent 76042cb389
commit 5d1eb8ee31
1 changed files with 7 additions and 2 deletions
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9
firmware/target/arm/usb-drv-arc.c
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@ -272,6 +272,7 @@
/* OTGSC Register Bit Masks */ /* OTGSC Register Bit Masks */
#define OTGSC_B_SESSION_VALID (0x00000800) #define OTGSC_B_SESSION_VALID (0x00000800)
#define OTGSC_A_VBUS_VALID (0x00000200)
#define QH_MULT_POS (30) #define QH_MULT_POS (30)
#define QH_ZLT_SEL (0x20000000) #define QH_ZLT_SEL (0x20000000)
@ -516,7 +517,10 @@ void usb_drv_int(void)
if (UNLIKELY(usbintr == USBINTR_RESET_EN)) { if (UNLIKELY(usbintr == USBINTR_RESET_EN)) {
/* USB detected - detach and inform */ /* USB detected - detach and inform */
usb_drv_stop(); usb_drv_stop();
usb_drv_usb_detect_event(); /* A false reset may occur upon unplugging, be sure VBUS is above
* the 4V4 threshold. */
if (usb_drv_powered())
usb_drv_usb_detect_event();
} }
else else
#endif #endif
@ -594,7 +598,8 @@ bool usb_drv_connected(void)
bool usb_drv_powered(void) bool usb_drv_powered(void)
{ {
return (REG_OTGSC & OTGSC_B_SESSION_VALID) ? true : false; /* true = bus 4V4 ok */
return (REG_OTGSC & OTGSC_A_VBUS_VALID) ? true : false;
} }
void usb_drv_set_address(int address) void usb_drv_set_address(int address)