X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fspec%2Fgen.py;h=96843ce11764d34f795d20fe3557f5486ce1beca;hb=22dd76c81a6acfa06f709bf634a78bcf03b21a15;hp=cfc59a0565c88d0af0d80d5c090ebed8ac542c81;hpb=132e433aada704244aa29e24f3b049f5e64fb5de;p=pinmux.git

diff --git a/src/spec/gen.py b/src/spec/gen.py
index cfc59a0..96843ce 100644
--- a/src/spec/gen.py
+++ b/src/spec/gen.py
@@ -3,20 +3,43 @@ import os.path
 from spec.interfaces import Pinouts
 
 
-def specgen(of, pth, pinouts, bankspec, pinbanks, fixedpins):
+def specgen(of, pth, pinouts, bankspec, muxwidths, pinbanks, fixedpins,
+            fastbus):
     """ generates a specification of pinouts (tsv files)
-        for reading in by pinmux
+        for reading in by pinmux.
+
+        files generated:
+        * interfaces.txt - contains name and number of interfaces
+        * {interfacename}.txt - contains name of pin, type, and bus
+
+        type may be in, out or inout.
+        if type is "inout" then a THIRD optional parameter of type
+        "bus" indicates whether the bus is ganged together.  in
+        future this may be "bus1", "bus2" and so on if an interface
+        contains more than one ganged group.
+
+        basically if the function needs to control whether a group
+        of pins shall be switched from input to output (as opposed
+        to the *pinmux* via user control deciding that), bus is
+        the way to indicate it.
     """
     pth = pth or ''
     #print bankspec.keys()
     #print fixedpins.keys()
+    #print pinouts.ganged.items()
     if not os.path.exists(pth):
         os.makedirs(pth)
     with open(os.path.join(pth, 'interfaces.txt'), 'w') as f:
         for k in pinouts.fnspec.keys():
             s = pinouts.fnspec[k]
-            f.write("%s\t%d\n" % (k.lower(), len(s)))
+            line = [k.lower(), str(len(s))]
+            for b in fastbus:
+                if b.startswith(k.lower()):
+                    line.append(b)
+            line = '\t'.join(line)
+            f.write("%s\n" % line)
             s0 = s[list(s.keys())[0]]  # hack, take first
+            gangedgroup = pinouts.ganged[k]
             with open(os.path.join(pth, '%s.txt' % k.lower()), 'w') as g:
                 if len(s0.pingroup) == 1:  # only one function, grouped higher
                     for ks in s.keys():  # grouped by interface
@@ -29,7 +52,10 @@ def specgen(of, pth, pinouts, bankspec, pinbanks, fixedpins):
                     for pinname in s0.pingroup:
                         fntype = s0.fntype.get(pinname, 'inout')
                         pn = pinname.lower()
-                        g.write("%s\t%s\n" % (pn, fntype))
+                        g.write("%s\t%s" % (pn, fntype))
+                        if fntype == 'inout' and pinname in gangedgroup:
+                            g.write("\tbus")
+                        g.write("\n")
 
     pks = sorted(pinouts.keys())
 
@@ -62,9 +88,9 @@ def specgen(of, pth, pinouts, bankspec, pinbanks, fixedpins):
     # lists bankspec, shows where the pin-numbers *start*
         of.write("# Pin Bank starting points and lengths\n\n")
     with open(os.path.join(pth, 'pinspec.txt'), 'w') as g:
-        keys = list(bankspec.keys())
-        keys.sort()
+        keys = sorted(bankspec.keys())
         for bank in keys:
             pinstart = bankspec[bank]
-            of.write("* %s %d %d\n" % (bank, pinstart, pinbanks[bank]))
-            g.write("%s\t%d\t%d\n" % (bank, pinstart, pinbanks[bank]))
+            wid = muxwidths[bank]
+            of.write("* %s %d %d %d\n" % (bank, pinstart, pinbanks[bank], wid))
+            g.write("%s\t%d\t%d\t%d\n" % (bank, pinstart, pinbanks[bank], wid))