V4L/DVB: ir-core/saa7134: Move ir keyup/keydown code to the ir-core
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/IR/ir-nec-decoder.c b/drivers/media/IR/ir-nec-decoder.c
index 16360eb..a58c717 100644
--- a/drivers/media/IR/ir-nec-decoder.c
+++ b/drivers/media/IR/ir-nec-decoder.c
@@ -30,37 +30,35 @@
#define MIN_BIT0_TIME 360000
#define MAX_BIT0_TIME 760000
-
-/** Decode NEC pulsecode. This code can take up to 76.5 ms to run.
- Unfortunately, using IRQ to decode pulse didn't work, since it uses
- a pulse train of 38KHz. This means one pulse on each 52 us
-*/
-
-int ir_nec_decode(struct input_dev *input_dev,
- struct ir_raw_event *evs,
- int len)
+/**
+ * __ir_nec_decode() - Decode one NEC pulsecode
+ * @input_dev: the struct input_dev descriptor of the device
+ * @evs: event array with type/duration of pulse/space
+ * @len: length of the array
+ * @pos: position to start seeking for a code
+ * This function returns the decoded ircode or -EINVAL if no pulse got decoded
+ */
+static int __ir_nec_decode(struct input_dev *input_dev,
+ struct ir_raw_event *evs,
+ int len, int *pos)
{
- int i, count = -1;
+ int count = -1;
int ircode = 0, not_code = 0;
-#if 0
- /* Needed only after porting the event code to the decoder */
- struct ir_input_dev *ir = input_get_drvdata(input_dev);
-#endif
/* Be sure that the first event is an start one and is a pulse */
- for (i = 0; i < len; i++) {
- if (evs[i].type & (IR_START_EVENT | IR_PULSE))
+ for (; *pos < len; (*pos)++) {
+ if (evs[*pos].type & (IR_START_EVENT | IR_PULSE))
break;
}
- i++; /* First event doesn't contain data */
+ (*pos)++; /* First event doesn't contain data */
- if (i >= len)
+ if (*pos >= len)
return 0;
/* First space should have 4.5 ms otherwise is not NEC protocol */
- if ((evs[i].delta.tv_nsec < MIN_START_TIME) |
- (evs[i].delta.tv_nsec > MAX_START_TIME) |
- (evs[i].type != IR_SPACE))
+ if ((evs[*pos].delta.tv_nsec < MIN_START_TIME) |
+ (evs[*pos].delta.tv_nsec > MAX_START_TIME) |
+ (evs[*pos].type != IR_SPACE))
goto err;
/*
@@ -68,24 +66,24 @@
*/
count = 0;
- for (i++; i < len; i++) {
+ for ((*pos)++; *pos < len; (*pos)++) {
int bit;
- if ((evs[i].delta.tv_nsec < MIN_PULSE_TIME) |
- (evs[i].delta.tv_nsec > MAX_PULSE_TIME) |
- (evs[i].type != IR_PULSE))
+ if ((evs[*pos].delta.tv_nsec < MIN_PULSE_TIME) |
+ (evs[*pos].delta.tv_nsec > MAX_PULSE_TIME) |
+ (evs[*pos].type != IR_PULSE))
goto err;
- if (++i >= len)
+ if (++*pos >= len)
goto err;
- if (evs[i].type != IR_SPACE)
+ if (evs[*pos].type != IR_SPACE)
goto err;
- if ((evs[i].delta.tv_nsec > MIN_BIT1_TIME) &&
- (evs[i].delta.tv_nsec < MAX_BIT1_TIME))
+ if ((evs[*pos].delta.tv_nsec > MIN_BIT1_TIME) &&
+ (evs[*pos].delta.tv_nsec < MAX_BIT1_TIME))
bit = 1;
- else if ((evs[i].delta.tv_nsec > MIN_BIT0_TIME) &&
- (evs[i].delta.tv_nsec < MAX_BIT0_TIME))
+ else if ((evs[*pos].delta.tv_nsec > MIN_BIT0_TIME) &&
+ (evs[*pos].delta.tv_nsec < MAX_BIT0_TIME))
bit = 0;
else
goto err;
@@ -120,12 +118,40 @@
}
IR_dprintk(1, "NEC scancode 0x%04x\n", ircode);
+ ir_keydown(input_dev, ircode);
+ ir_keyup(input_dev);
return ircode;
err:
IR_dprintk(1, "NEC decoded failed at bit %d while decoding %luus time\n",
- count, (evs[i].delta.tv_nsec + 500) / 1000);
+ count, (evs[*pos].delta.tv_nsec + 500) / 1000);
return -EINVAL;
}
+
+/**
+ * __ir_nec_decode() - Decodes all NEC pulsecodes on a given array
+ * @input_dev: the struct input_dev descriptor of the device
+ * @evs: event array with type/duration of pulse/space
+ * @len: length of the array
+ * This function returns the number of decoded pulses or -EINVAL if no
+ * pulse got decoded
+ */
+int ir_nec_decode(struct input_dev *input_dev,
+ struct ir_raw_event *evs,
+ int len)
+{
+ int pos = 0;
+ int rc = 0;
+
+ while (pos < len) {
+ if (__ir_nec_decode(input_dev, evs, len, &pos) >= 0)
+ rc++;
+ }
+
+ if (!rc)
+ return -EINVAL;
+ return rc;
+}
+
EXPORT_SYMBOL_GPL(ir_nec_decode);