conf: introduce "servo-pi" config option

This is equivalent to -a NUMBER,NUMBER command line option, which will be removed. Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com>

conf: introduce "servo-pi" config option
This is equivalent to -a NUMBER,NUMBER command line option, which will be removed. Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com>
6c633385 · Davide Ciminaghi · Alessandro Rubini · dff43b05 · 6c633385
Commit 6c633385 authored Mar 02, 2016 by Davide Ciminaghi Committed by Alessandro Rubini Apr 08, 2016
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conf.c lib/conf.c +15 -0

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--- a/lib/conf.c
+++ b/lib/conf.c
@@ -183,6 +183,20 @@ static int f_vlan(int lineno, struct pp_globals *ppg, union pp_cfg_arg *arg)
 	return 0;
 }

+static int f_servo_pi(int lineno, struct pp_globals *ppg, union pp_cfg_arg *arg)
+{
+	int n1, n2;
+
+	CHECK_PPI(0);
+	n1 = arg->i2[0]; n2 = arg->i2[1];
+	/* no negative or zero attenuation */
+	if (n1 < 1 || n2 < 1)
+		return -1;
+	GOPTS(ppg)->ap = n1;
+	GOPTS(ppg)->ai = n2;
+	return 0;
+}
+
 /* These are the tables for the parser */
 static struct pp_argname arg_proto[] = {
 	{"raw", PPSI_PROTO_RAW},
@@ -213,6 +227,7 @@ static struct pp_argline pp_global_arglines[] = {
 	{ f_diag,	"diagnostics",	ARG_STR},
 	{ f_class,	"clock-class",	ARG_INT},
 	{ f_accuracy,	"clock-accuracy", ARG_INT},
+	{ f_servo_pi,	"servo-pi",	ARG_INT2},
 	{}
 };