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cores/gpio: add CSR descriptions.

This commit is contained in:
Florent Kermarrec 2020-03-11 12:06:15 +01:00
parent 4dabc5a625
commit bb8905fa5d
1 changed files with 6 additions and 6 deletions
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12
litex/soc/cores/gpio.py
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@ -10,21 +10,21 @@ from litex.soc.interconnect.csr import *
class GPIOIn(Module, AutoCSR): class GPIOIn(Module, AutoCSR):
def __init__(self, signal): def __init__(self, signal):
self._in = CSRStatus(len(signal)) self._in = CSRStatus(len(signal), description="GPIO Input(s) Status.")
self.specials += MultiReg(signal, self._in.status) self.specials += MultiReg(signal, self._in.status)
# GPIO Output -------------------------------------------------------------------------------------- # GPIO Output --------------------------------------------------------------------------------------
class GPIOOut(Module, AutoCSR): class GPIOOut(Module, AutoCSR):
def __init__(self, signal): def __init__(self, signal):
self._out = CSRStorage(len(signal)) self._out = CSRStorage(len(signal), description="GPIO Output(s) Control.")
self.comb += signal.eq(self._out.storage) self.comb += signal.eq(self._out.storage)
# GPIO Input/Output -------------------------------------------------------------------------------- # GPIO Input/Output --------------------------------------------------------------------------------
class GPIOInOut(Module): class GPIOInOut(Module):
def __init__(self, in_signal, out_signal): def __init__(self, in_signal, out_signal):
self.submodules.gpio_in = GPIOIn(in_signal) self.submodules.gpio_in = GPIOIn(in_signal)
self.submodules.gpio_out = GPIOOut(out_signal) self.submodules.gpio_out = GPIOOut(out_signal)
def get_csrs(self): def get_csrs(self):
@ -35,9 +35,9 @@ class GPIOInOut(Module):
class GPIOTristate(Module, AutoCSR): class GPIOTristate(Module, AutoCSR):
def __init__(self, pads): def __init__(self, pads):
nbits = len(pads) nbits = len(pads)
self._oe = CSRStorage(nbits) self._oe = CSRStorage(nbits, description="GPIO Tristate(s) Control.")
self._in = CSRStatus(nbits) self._in = CSRStatus(nbits, description="GPIO Input(s) Status.")
self._out = CSRStorage(nbits) self._out = CSRStorage(nbits, description="GPIO Ouptut(s) Control.")
# # # # # #