Skip to content

Commit

Permalink
Browse files Browse the repository at this point in the history
dvisampler: add HPD registers
  • Loading branch information
Sebastien Bourdeauducq committed Sep 7, 2013
1 parent deb438c commit dba6189
Showing 1 changed file with 12 additions and 1 deletion.
13 changes: 12 additions & 1 deletion milkymist/dvisampler/edid.py
Expand Up @@ -3,7 +3,7 @@
from migen.genlib.cdc import MultiReg
from migen.genlib.fsm import FSM, NextState
from migen.genlib.misc import chooser
from migen.bank.description import AutoCSR
from migen.bank.description import CSRStorage, CSRStatus, AutoCSR

_default_edid = [
0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x3D, 0x17, 0x32, 0x12, 0x2A, 0x6A, 0xBF, 0x00,
Expand All @@ -18,10 +18,21 @@

class EDID(Module, AutoCSR):
def __init__(self, pads, default=_default_edid):
self._r_hpd_notif = CSRStatus()
self._r_hpd_en = CSRStorage()
self.specials.mem = Memory(8, 128, init=default)

###

# HPD
if hasattr(pads, "hpd_notif"):
self.specials += MultiReg(pads.hpd_notif, self._r_hpd_notif.status)
else:
self.comb += self._r_hpd_notif.status.eq(1)
if hasattr(pads, "hpd_en"):
self.comb += pads.hpd_en.eq(self._r_hpd_en.storage)

# EDID
scl_raw = Signal()
sda_i = Signal()
sda_drv = Signal()
Expand Down

0 comments on commit dba6189

Please sign in to comment.