From eeea30eadafeacc89d4ed4cf5d93b07b6d0f8860 Mon Sep 17 00:00:00 2001 From: Florent Kermarrec Date: Tue, 7 Jul 2020 08:14:42 +0200 Subject: [PATCH] litex/gen: remove io that has been replaced with litex/build/io (and should have been removed). --- litex/gen/io.py | 113 ------------------------------------------------ 1 file changed, 113 deletions(-) delete mode 100644 litex/gen/io.py diff --git a/litex/gen/io.py b/litex/gen/io.py deleted file mode 100644 index 5c834dbfc..000000000 --- a/litex/gen/io.py +++ /dev/null @@ -1,113 +0,0 @@ -# This file is Copyright (c) 2015-2020 Florent Kermarrec -# License: BSD - -from migen import * -from migen.fhdl.specials import Special - -# Differential Input/Output ------------------------------------------------------------------------ - -class DifferentialInput(Special): - def __init__(self, i_p, i_n, o): - Special.__init__(self) - self.i_p = wrap(i_p) - self.i_n = wrap(i_n) - self.o = wrap(o) - - def iter_expressions(self): - yield self, "i_p", SPECIAL_INPUT - yield self, "i_n", SPECIAL_INPUT - yield self, "o", SPECIAL_OUTPUT - - @staticmethod - def lower(dr): - raise NotImplementedError("Attempted to use a differential input, but platform does not support them") - - -class DifferentialOutput(Special): - def __init__(self, i, o_p, o_n): - Special.__init__(self) - self.i = wrap(i) - self.o_p = wrap(o_p) - self.o_n = wrap(o_n) - - def iter_expressions(self): - yield self, "i", SPECIAL_INPUT - yield self, "o_p", SPECIAL_OUTPUT - yield self, "o_n", SPECIAL_OUTPUT - - @staticmethod - def lower(dr): - raise NotImplementedError("Attempted to use a differential output, but platform does not support them") - - -# SDR Input/Output --------------------------------------------------------------------------------- - -class InferedSDRIO(Module): - def __init__(self, i, o, clk, clk_domain): - if clk_domain is None: - raise NotImplementedError("Attempted to use an InferedSDRIO but no clk_domain specified.") - sync = getattr(self.sync, clk_domain) - sync += o.eq(i) - - -class SDRIO(Special): - def __init__(self, i, o, clk=ClockSignal()): - assert len(i) == len(o) - Special.__init__(self) - print(o) - self.i = wrap(i) - self.o = wrap(o) - self.clk = wrap(clk) - self.clk_domain = None if not hasattr(clk, "cd") else clk.cd - - def iter_expressions(self): - yield self, "i", SPECIAL_INPUT - yield self, "o", SPECIAL_OUTPUT - yield self, "clk", SPECIAL_INPUT - - @staticmethod - def lower(dr): - return InferedSDRIO(dr.i, dr.o, dr.clk, dr.clk_domain) - - -class SDRInput(SDRIO): pass -class SDROutput(SDRIO): pass - -# DDR Input/Output --------------------------------------------------------------------------------- - -class DDRInput(Special): - def __init__(self, i, o1, o2, clk=ClockSignal()): - Special.__init__(self) - self.i = wrap(i) - self.o1 = wrap(o1) - self.o2 = wrap(o2) - self.clk = wrap(clk) - - def iter_expressions(self): - yield self, "i", SPECIAL_INPUT - yield self, "o1", SPECIAL_OUTPUT - yield self, "o2", SPECIAL_OUTPUT - yield self, "clk", SPECIAL_INPUT - - @staticmethod - def lower(dr): - raise NotImplementedError("Attempted to use a DDR input, but platform does not support them") - - -class DDROutput(Special): - def __init__(self, i1, i2, o, clk=ClockSignal()): - Special.__init__(self) - self.i1 = i1 - self.i2 = i2 - self.o = o - self.clk = clk - - def iter_expressions(self): - yield self, "i1", SPECIAL_INPUT - yield self, "i2", SPECIAL_INPUT - yield self, "o", SPECIAL_OUTPUT - yield self, "clk", SPECIAL_INPUT - - @staticmethod - def lower(dr): - raise NotImplementedError("Attempted to use a DDR output, but platform does not support them")