V4L/DVB: ir-core/saa7134: Move ir keyup/keydown code to the ir-core

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 58 insertions, 32 deletions

diff --git a/drivers/media/IR/ir-nec-decoder.c b/drivers/media/IR/ir-nec-decoder.c
index 16360eb4055b..a58c717ec6b0 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 @@ int ir_nec_decode(struct input_dev *input_dev,
          */
 
         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 @@ int ir_nec_decode(struct input_dev *input_dev,
         }
 
         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);