from migen.fhdl.std import * from migen.flow.network import * from migen.flow import plumbing from migen.bank.description import AutoCSR from migen.actorlib import dma_lasmi, structuring, misc from misoclib.framebuffer.format import bpp, pixel_layout, FrameInitiator, VTG from misoclib.framebuffer.phy import Driver class Framebuffer(Module, AutoCSR): def __init__(self, pads_vga, pads_dvi, lasmim): pack_factor = lasmim.dw//bpp g = DataFlowGraph() self.fi = FrameInitiator(lasmim.aw, pack_factor) intseq = misc.IntSequence(lasmim.aw, lasmim.aw) dma_out = AbstractActor(plumbing.Buffer) g.add_connection(self.fi, intseq, source_subr=self.fi.dma_subr()) g.add_pipeline(intseq, AbstractActor(plumbing.Buffer), dma_lasmi.Reader(lasmim), dma_out) cast = structuring.Cast(lasmim.dw, pixel_layout(pack_factor), reverse_to=True) vtg = VTG(pack_factor) self.driver = Driver(pack_factor, pads_vga, pads_dvi) g.add_connection(self.fi, vtg, source_subr=self.fi.timing_subr, sink_ep="timing") g.add_connection(dma_out, cast) g.add_connection(cast, vtg, sink_ep="pixels") g.add_connection(vtg, self.driver) self.submodules += CompositeActor(g)