* [9front] [PATCH] audiohda: one-off jack detection
@ 2022-12-07 16:10 Kristo
2022-12-07 16:36 ` Sigrid Solveig Haflínudóttir
0 siblings, 1 reply; 2+ messages in thread
From: Kristo @ 2022-12-07 16:10 UTC (permalink / raw)
To: 9front
When choosing input and output pins at start up, we can use the pin sense
control to find connected jacks and prioritize them. Of course it would
be preferable to implement proper presence detection handling with the
unsolicited responses.
diff 744053268d196e8c282d20243600fb33d4df0028 uncommitted
--- a/sys/src/9/pc/audiohda.c
+++ b/sys/src/9/pc/audiohda.c
@@ -1023,6 +1023,16 @@
}
static int
+present(Widget *w)
+{
+ /* validate presence detection result */
+ if(((w->pin >> 8) & 1) == 1 || (w->pincap & Pdetect) == 0)
+ return 0;
+
+ return cmd(w->id, Getpinsense, 0) >> 31;
+}
+
+static int
scoreout(Widget *w)
{
int score;
@@ -1035,6 +1045,8 @@
score = 0;
r = w->pin;
+ if(present(w))
+ score |= 64;
if(((r >> 30) & 0x3) >= 2) /* fix or fix+jack */
score |= 32;
if(((r >> 12) & 0xf) == 4) /* green */
@@ -1063,6 +1075,8 @@
score = 0;
r = w->pin;
+ if(present(w))
+ score |= 8;
if(((r >> 30) & 0x3) >= 2) /* fix or fix+jack */
score |= 4;
return score;
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-12-07 16:10 [9front] [PATCH] audiohda: one-off jack detection Kristo
2022-12-07 16:36 ` Sigrid Solveig Haflínudóttir
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