b2bbb20b37
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>
27 lines
977 B
C
27 lines
977 B
C
/*
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* linux/include/asm-arm/arch-pxa/udc.h
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*
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* This supports machine-specific differences in how the PXA2xx
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* USB Device Controller (UDC) is wired.
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*
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* It is set in linux/arch/arm/mach-pxa/<machine>.c and used in
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* the probe routine of linux/drivers/usb/gadget/pxa2xx_udc.c
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*/
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struct pxa2xx_udc_mach_info {
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int (*udc_is_connected)(void); /* do we see host? */
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void (*udc_command)(int cmd);
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#define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */
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#define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */
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/* Boards following the design guidelines in the developer's manual,
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* with on-chip GPIOs not Lubbock's wierd hardware, can have a sane
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* VBUS IRQ and omit the methods above. Store the GPIO number
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* here; for GPIO 0, also mask in one of the pxa_gpio_mode() bits.
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*/
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u16 gpio_vbus; /* high == vbus present */
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u16 gpio_pullup; /* high == pullup activated */
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};
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extern void pxa_set_udc_info(struct pxa2xx_udc_mach_info *info);
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