Commit b9392d99 authored by Gregory Herrero's avatar Gregory Herrero Committed by Felipe Balbi

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.
Acked-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarGregory Herrero <gregory.herrero@intel.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 2b046bc5
...@@ -534,6 +534,19 @@ static inline bool dbg_perio(void) { return false; } ...@@ -534,6 +534,19 @@ static inline bool dbg_perio(void) { return false; }
/* Packet size for any kind of endpoint descriptor */ /* Packet size for any kind of endpoint descriptor */
#define dwc2_max_packet(wmaxpacketsize) ((wmaxpacketsize) & 0x07ff) #define dwc2_max_packet(wmaxpacketsize) ((wmaxpacketsize) & 0x07ff)
/*
* Returns true if frame1 index is greater than frame2 index. The comparison
* is done modulo FRLISTEN_64_SIZE. This accounts for the rollover of the
* frame number when the max index frame number is reached.
*/
static inline bool dwc2_frame_idx_num_gt(u16 fr_idx1, u16 fr_idx2)
{
u16 diff = fr_idx1 - fr_idx2;
u16 sign = diff & (FRLISTEN_64_SIZE >> 1);
return diff && !sign;
}
/* /*
* Returns true if frame1 is less than or equal to frame2. The comparison is * Returns true if frame1 is less than or equal to frame2. The comparison is
* done modulo HFNUM_MAX_FRNUM. This accounts for the rollover of the * done modulo HFNUM_MAX_FRNUM. This accounts for the rollover of the
......
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