Reorganize resource taxonomy.

The current hierarchy isn't particularly well suited to resources
like SDRAM or NOR flash, so make it much less fine-grained but easier
to use and less nitpicky.

1 files changed, 0 insertions, 33 deletions

diff --git a/nmigen_boards/dev/spi.py b/nmigen_boards/dev/spi.py
deleted file mode 100644
index 2d045bc..0000000
--- a/nmigen_boards/dev/spi.py
+++ /dev/null
@@ -1,33 +0,0 @@
-from nmigen.build import *
-
-
-__all__ = ["SPIResource"]
-
-
-def SPIResource(*args, cs, clk, mosi, miso, int=None, reset=None, attrs=None, role="host"):
-    assert role in ("host", "device")
-
-    io = []
-    if role == "host":
-        io.append(Subsignal("cs", PinsN(cs, dir="o")))
-        io.append(Subsignal("clk", Pins(clk, dir="o", assert_width=1)))
-        io.append(Subsignal("mosi", Pins(mosi, dir="o", assert_width=1)))
-        io.append(Subsignal("miso", Pins(miso, dir="i", assert_width=1)))
-    else:  # device
-        io.append(Subsignal("cs", PinsN(cs, dir="i", assert_width=1)))
-        io.append(Subsignal("clk", Pins(clk, dir="i", assert_width=1)))
-        io.append(Subsignal("mosi", Pins(mosi, dir="i", assert_width=1)))
-        io.append(Subsignal("miso", Pins(miso, dir="oe", assert_width=1)))
-    if int is not None:
-        if role == "host":
-            io.append(Subsignal("int", Pins(int, dir="i")))
-        else:
-            io.append(Subsignal("int", Pins(int, dir="oe", assert_width=1)))
-    if reset is not None:
-        if role == "host":
-            io.append(Subsignal("reset", Pins(reset, dir="o")))
-        else:
-            io.append(Subsignal("reset", Pins(reset, dir="i", assert_width=1)))
-    if attrs is not None:
-        io.append(attrs)
-    return Resource.family(*args, default_name="spi", ios=io)