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authorDavid Brownell <david-b@pacbell.net>2006-06-29 12:25:39 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-27 11:58:48 -0700
commitb2bbb20b37d734443d1c279d0033a64f6095db54 (patch)
tree067510f143dcb0e4f938f932994e5ac34f5da6b9 /include/asm-arm
parent3a16f7b4a75d68364c3278523f51ac141a12758a (diff)
USB: pxa2xx_udc understands GPIO based VBUS sensing
This updates the PXA 25x UDC board-independent infrastructure for VBUS sensing and the D+ pullup. The original code evolved from rather bizarre support on Intel's "Lubbock" reference hardware, so that on more sensible hardware it doesn't work as well as it could/should. The change is just to teach the UDC driver how to use built-in PXA GPIO pins directly. This reduces the amount of board-specfic object code needed, and enables the use of a VBUS sensing IRQ on boards (like Gumstix) that have one. With VBUS sensing, the UDC is unclocked until a host is actually connected. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/asm-arm')
-rw-r--r--include/asm-arm/arch-pxa/udc.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/asm-arm/arch-pxa/udc.h b/include/asm-arm/arch-pxa/udc.h
index 30548a30c77..121cd241115 100644
--- a/include/asm-arm/arch-pxa/udc.h
+++ b/include/asm-arm/arch-pxa/udc.h
@@ -12,6 +12,14 @@ struct pxa2xx_udc_mach_info {
void (*udc_command)(int cmd);
#define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */
#define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */
+
+ /* Boards following the design guidelines in the developer's manual,
+ * with on-chip GPIOs not Lubbock's wierd hardware, can have a sane
+ * VBUS IRQ and omit the methods above. Store the GPIO number
+ * here; for GPIO 0, also mask in one of the pxa_gpio_mode() bits.
+ */
+ u16 gpio_vbus; /* high == vbus present */
+ u16 gpio_pullup; /* high == pullup activated */
};
extern void pxa_set_udc_info(struct pxa2xx_udc_mach_info *info);