Author: ganbold
Date: Sat Mar 25 10:39:24 2017
New Revision: 315931
URL: https://svnweb.freebsd.org/changeset/base/315931
Log:
Fix and add comments to match selected frequency sample.
Add debug printfs when bootverbose is used.
No functional changes.
Modified:
head/sys/arm/allwinner/aw_cir.c
Modified: head/sys/arm/allwinner/aw_cir.c
==============================================================================
--- head/sys/arm/allwinner/aw_cir.c Sat Mar 25 05:41:34 2017
(r315930)
+++ head/sys/arm/allwinner/aw_cir.c Sat Mar 25 10:39:24 2017
(r315931)
@@ -89,7 +89,12 @@ __FBSDID("$FreeBSD$");
/* IR Sample Configure Reg */
#define AW_IR_CIR 0x34
-/* Filter Threshold = 8 * 21.3 = ~128us < 200us */
+
+/*
+ * Frequency sample: 23437.5Hz (Cycle: 42.7us)
+ * Pulse of NEC Remote > 560us
+ */
+/* Filter Threshold = 8 * 42.7 = ~341us < 500us */
#define AW_IR_RXFILT_VAL (((8) & 0x3f) << 2)
/* Idle Threshold = (2 + 1) * 128 * 42.7 = ~16.4ms > 9ms */
#define AW_IR_RXIDLE_VAL (((2) & 0xff) << 8)
@@ -317,12 +322,17 @@ aw_ir_intr(void *arg)
/* Read RX interrupt status */
val = READ(sc, AW_IR_RXSTA);
+ if (bootverbose)
+ device_printf(sc->dev, "RX interrupt status: %x\n", val);
/* Clean all pending interrupt statuses */
WRITE(sc, AW_IR_RXSTA, val | AW_IR_RXSTA_CLEARALL);
/* When Rx FIFO Data available or Packet end */
if (val & (AW_IR_RXINT_RAI_EN | AW_IR_RXINT_RPEI_EN)) {
+ if (bootverbose)
+ device_printf(sc->dev,
+ "RX FIFO Data available or Packet end\n");
/* Get available message count in RX FIFO */
dcnt = AW_IR_RXSTA_COUNTER(val);
/* Read FIFO */
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