67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
from migen.fhdl.structure import *
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from migen.fhdl.module import Module
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from migen.bank.description import *
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from milkymist.dvisampler.edid import EDID
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from milkymist.dvisampler.clocking import Clocking
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from milkymist.dvisampler.datacapture import DataCapture
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from milkymist.dvisampler.charsync import CharSync
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from milkymist.dvisampler.decoding import Decoding
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from milkymist.dvisampler.chansync import ChanSync
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from milkymist.dvisampler.resdetection import ResolutionDetection
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class DVISampler(Module, AutoCSR):
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def __init__(self, pads):
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self.submodules.edid = EDID(pads)
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self.submodules.clocking = Clocking(pads)
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for datan in range(3):
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name = "data" + str(datan)
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invert = False
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try:
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s = getattr(pads, name)
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except AttributeError:
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s = getattr(pads, name + "_n")
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invert = True
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cap = DataCapture(8, invert)
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setattr(self.submodules, name + "_cap", cap)
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self.comb += [
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cap.pad.eq(s),
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cap.serdesstrobe.eq(self.clocking.serdesstrobe)
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]
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charsync = CharSync()
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setattr(self.submodules, name + "_charsync", charsync)
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self.comb += charsync.raw_data.eq(cap.d)
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decoding = Decoding()
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setattr(self.submodules, name + "_decod", decoding)
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self.comb += [
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decoding.valid_i.eq(charsync.synced),
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decoding.input.eq(charsync.data)
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]
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self.submodules.chansync = ChanSync()
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self.comb += [
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self.chansync.valid_i.eq(self.data0_decod.valid_o & \
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self.data1_decod.valid_o & self.data2_decod.valid_o),
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self.chansync.data_in0.eq(self.data0_decod.output),
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self.chansync.data_in1.eq(self.data1_decod.output),
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self.chansync.data_in2.eq(self.data2_decod.output),
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]
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de = self.chansync.data_out0.de
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r = self.chansync.data_out2.d
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g = self.chansync.data_out1.d
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b = self.chansync.data_out0.d
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hsync = self.chansync.data_out0.c[0]
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vsync = self.chansync.data_out0.c[1]
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self.submodules.resdetection = ResolutionDetection()
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self.comb += [
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self.resdetection.de.eq(de),
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self.resdetection.hsync.eq(hsync),
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self.resdetection.vsync.eq(vsync)
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]
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