From 7010f5b94fa3c8e5daf95d4fab002eddbfa4e9b2 Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Wed, 2 May 2012 17:47:02 +0200 Subject: usb:gadget:composite USB composite gadget support USB Composite gadget implementation for u-boot. It builds on top of USB UDC drivers. This commit is based on following files from Linux Kernel v2.6.36: ./include/linux/usb/composite.h ./drivers/usb/gadget/composite.c SHA1: d187abb9a83e6c6b6e9f2ca17962bdeafb4bc903 Signed-off-by: Lukasz Majewski Signed-off-by: Kyungmin Park Cc: Marek Vasut --- include/usb/lin_gadget_compat.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include/usb/lin_gadget_compat.h') diff --git a/include/usb/lin_gadget_compat.h b/include/usb/lin_gadget_compat.h index 8287b9de9f..5bdcb8d797 100644 --- a/include/usb/lin_gadget_compat.h +++ b/include/usb/lin_gadget_compat.h @@ -44,6 +44,25 @@ #define ENOTSUPP 524 /* Operation is not supported */ +#define BITS_PER_BYTE 8 +#define BITS_TO_LONGS(nr) \ + DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) +#define DECLARE_BITMAP(name, bits) \ + unsigned long name[BITS_TO_LONGS(bits)] + +#define small_const_nbits(nbits) \ + (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) + +static inline void bitmap_zero(unsigned long *dst, int nbits) +{ + if (small_const_nbits(nbits)) + *dst = 0UL; + else { + int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + memset(dst, 0, len); + } +} + #define dma_cache_maint(addr, size, mode) cache_flush() void cache_flush(void); -- cgit v1.2.1