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, 38 deletions

diff --git a/nmigen_boards/dev/flash.py b/nmigen_boards/dev/flash.py
deleted file mode 100644
index 817b6d4..0000000
--- a/nmigen_boards/dev/flash.py
+++ /dev/null
@@ -1,38 +0,0 @@
-from nmigen.build import *
-
-
-__all__ = ["SPIFlashResources"]
-
-
-def SPIFlashResources(*args, cs, clk, mosi, miso, wp=None, hold=None, attrs=None):
-    resources = []
-
-    io_all = []
-    if attrs is not None:
-        io_all.append(attrs)
-    io_all.append(Subsignal("cs",  PinsN(cs, dir="o")))
-    io_all.append(Subsignal("clk", Pins(clk, dir="o", assert_width=1)))
-
-    io_1x = list(io_all)
-    io_1x.append(Subsignal("mosi", Pins(mosi, dir="o", assert_width=1)))
-    io_1x.append(Subsignal("miso", Pins(miso, dir="i", assert_width=1)))
-    if wp is not None and hold is not None:
-        io_1x.append(Subsignal("wp",   PinsN(wp,   dir="o", assert_width=1)))
-        io_1x.append(Subsignal("hold", PinsN(hold, dir="o", assert_width=1)))
-    resources.append(Resource.family(*args, default_name="spi_flash", ios=io_1x,
-                                     name_suffix="1x"))
-
-    io_2x = list(io_all)
-    io_2x.append(Subsignal("dq", Pins(" ".join([mosi, miso]), dir="io",
-                                      assert_width=2)))
-    resources.append(Resource.family(*args, default_name="spi_flash", ios=io_2x,
-                                     name_suffix="2x"))
-
-    if wp is not None and hold is not None:
-        io_4x = list(io_all)
-        io_4x.append(Subsignal("dq", Pins(" ".join([mosi, miso, wp, hold]), dir="io",
-                                          assert_width=4)))
-        resources.append(Resource.family(*args, default_name="spi_flash", ios=io_4x,
-                                         name_suffix="4x"))
-
-    return resources