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, 46 deletions

diff --git a/nmigen_boards/dev/sd.py b/nmigen_boards/dev/sd.py
deleted file mode 100644
index 8fdbcbe..0000000
--- a/nmigen_boards/dev/sd.py
+++ /dev/null
@@ -1,46 +0,0 @@
-from nmigen.build import *
-
-
-__all__ = ["SDCardResources"]
-
-
-def SDCardResources(*args, clk, cmd, dat0, dat1=None, dat2=None, dat3=None,
-                    cd=None, wp=None, attrs=None):
-    resources = []
-
-    io_common = []
-    if attrs is not None:
-        io_common.append(attrs)
-    if cd is not None:
-        io_common.append(Subsignal("cd", Pins(cd, dir="i", assert_width=1)))
-    if wp is not None:
-        io_common.append(Subsignal("wp", PinsN(wp, dir="i", assert_width=1)))
-
-    io_native = list(io_common)
-    io_native.append(Subsignal("clk", Pins(clk, dir="o", assert_width=1)))
-    io_native.append(Subsignal("cmd", Pins(cmd, dir="o", assert_width=1)))
-
-    io_1bit = list(io_native)
-    io_1bit.append(Subsignal("dat", Pins(dat0, dir="io", assert_width=1)))
-    if dat3 is not None: # works as electronic card detect
-        io_1bit.append(Subsignal("ecd", Pins(dat3, dir="i", assert_width=1)))
-    resources.append(Resource.family(*args, default_name="sd_card", ios=io_1bit,
-                                     name_suffix="1bit"))
-
-    if dat1 is not None and dat2 is not None and dat3 is not None:
-        io_4bit = list(io_native)
-        io_4bit.append(Subsignal("dat", Pins(" ".join((dat0, dat1, dat2, dat3)), dir="io",
-                                             assert_width=4)))
-        resources.append(Resource.family(*args, default_name="sd_card", ios=io_4bit,
-                                         name_suffix="4bit"))
-
-    if dat3 is not None:
-        io_spi = list(io_common)
-        io_spi.append(Subsignal("cs", PinsN(dat3, dir="io"))) # doubles as electronic card detect
-        io_spi.append(Subsignal("clk", Pins(clk, dir="o", assert_width=1)))
-        io_spi.append(Subsignal("mosi", Pins(cmd, dir="o", assert_width=1)))
-        io_spi.append(Subsignal("miso", Pins(dat0, dir="i", assert_width=1)))
-        resources.append(Resource.family(*args, default_name="sd_card", ios=io_spi,
-                                         name_suffix="spi"))
-
-    return resources