Add srd_inst_initial_pins_set_all() and support code.

This allows frontends to set the assumed initial pins (i.e., the assumed
state of the pins before the first sample of a capture) to user-specified
values.

The assumed initial pins can be either low, or high, or "use same value
as the first sample of the capture".

The special self.initial_pins decoder attribute is now removed.

9 files changed, 0 insertions, 23 deletions

diff --git a/decoders/am230x/pd.py b/decoders/am230x/pd.py
index f76cab2..3c5003d 100644
--- a/decoders/am230x/pd.py
+++ b/decoders/am230x/pd.py
@@ -128,9 +128,6 @@ class Decoder(srd.Decoder):
     def start(self):
         self.out_ann = self.register(srd.OUTPUT_ANN)
 
-        # Assume that the initial pin state is high (logic 1).
-        self.initial_pins = [1]
-
     def metadata(self, key, value):
         if key != srd.SRD_CONF_SAMPLERATE:
             return
diff --git a/decoders/dcf77/pd.py b/decoders/dcf77/pd.py
index b643631..a4e87f6 100644
--- a/decoders/dcf77/pd.py
+++ b/decoders/dcf77/pd.py
@@ -75,9 +75,6 @@ class Decoder(srd.Decoder):
     def start(self):
         self.out_ann = self.register(srd.OUTPUT_ANN)
 
-        # Assume that the initial pin state is logic 1.
-        self.initial_pins = [1]
-
     def metadata(self, key, value):
         if key == srd.SRD_CONF_SAMPLERATE:
             self.samplerate = value
diff --git a/decoders/guess_bitrate/pd.py b/decoders/guess_bitrate/pd.py
index 45d68b0..1bccc54 100644
--- a/decoders/guess_bitrate/pd.py
+++ b/decoders/guess_bitrate/pd.py
@@ -49,8 +49,6 @@ class Decoder(srd.Decoder):
     def start(self):
         self.out_ann = self.register(srd.OUTPUT_ANN)
 
-        self.initial_pins = [1] # TODO: Not generally correct.
-
     def metadata(self, key, value):
         if key == srd.SRD_CONF_SAMPLERATE:
             self.samplerate = value
diff --git a/decoders/i2c/pd.py b/decoders/i2c/pd.py
index d2f8bc4..0e7f769 100644
--- a/decoders/i2c/pd.py
+++ b/decoders/i2c/pd.py
@@ -130,10 +130,6 @@ class Decoder(srd.Decoder):
         self.out_bitrate = self.register(srd.OUTPUT_META,
                 meta=(int, 'Bitrate', 'Bitrate from Start bit to Stop bit'))
 
-        # Assume that the initial SCL/SDA pin state is high (logic 1).
-        # This is a good default, since both pins have pullups as per spec.
-        self.initial_pins = [1, 1]
-
     def putx(self, data):
         self.put(self.ss, self.es, self.out_ann, data)
 
diff --git a/decoders/ir_nec/pd.py b/decoders/ir_nec/pd.py
index 93b398b..03a5469 100644
--- a/decoders/ir_nec/pd.py
+++ b/decoders/ir_nec/pd.py
@@ -108,9 +108,6 @@ class Decoder(srd.Decoder):
         self.out_ann = self.register(srd.OUTPUT_ANN)
         self.active = 0 if self.options['polarity'] == 'active-low' else 1
 
-        # Set the initial (assumed) value of the pin as per user-config.
-        self.initial_pins = [1 if self.active == 0 else 0]
-
     def metadata(self, key, value):
         if key == srd.SRD_CONF_SAMPLERATE:
             self.samplerate = value
diff --git a/decoders/mdio/pd.py b/decoders/mdio/pd.py
index ed6cfef..7c2fc5f 100644
--- a/decoders/mdio/pd.py
+++ b/decoders/mdio/pd.py
@@ -62,7 +62,6 @@ class Decoder(srd.Decoder):
     )
 
     def __init__(self):
-        self.initial_pins = [1, 1]
         self.illegal_bus = 0
         self.samplenum = -1
         self.clause45_addr = -1 # Clause 45 is context sensitive.
diff --git a/decoders/parallel/pd.py b/decoders/parallel/pd.py
index db9b371..c8ac2b0 100644
--- a/decoders/parallel/pd.py
+++ b/decoders/parallel/pd.py
@@ -99,9 +99,6 @@ class Decoder(srd.Decoder):
         self.out_python = self.register(srd.OUTPUT_PYTHON)
         self.out_ann = self.register(srd.OUTPUT_ANN)
 
-        # Assume that the initial pin state of all pins is logic 1.
-        self.initial_pins = [1] * (NUM_CHANNELS + 1)
-
     def putpb(self, data):
         self.put(self.ss_item, self.es_item, self.out_python, data)
 
diff --git a/decoders/spdif/pd.py b/decoders/spdif/pd.py
index 1f1ed70..0c535e4 100644
--- a/decoders/spdif/pd.py
+++ b/decoders/spdif/pd.py
@@ -79,9 +79,6 @@ class Decoder(srd.Decoder):
     def start(self):
         self.out_ann = self.register(srd.OUTPUT_ANN)
 
-        # Assume that the initial pin state is logic 0.
-        self.initial_pins = [0]
-
     def metadata(self, key, value):
         if key == srd.SRD_CONF_SAMPLERATE:
             self.samplerate = value
diff --git a/decoders/timing/pd.py b/decoders/timing/pd.py
index be600e9..ab963bb 100644
--- a/decoders/timing/pd.py
+++ b/decoders/timing/pd.py
@@ -88,7 +88,6 @@ class Decoder(srd.Decoder):
     def start(self):
         self.out_ann = self.register(srd.OUTPUT_ANN)
         self.edge = self.options['edge']
-        self.initial_pins = [0]
 
     def decode(self):
         if not self.samplerate: