Revert "[media] rc: rc-ir-raw: Add Manchester encoder (phase encoder) helper"

[uclinux-h8/linux.git] / drivers / media / rc / rc-ir-raw.c

diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c
index 6c9580e..dd47fe5 100644 (file)
--- a/drivers/media/rc/rc-ir-raw.c
+++ b/drivers/media/rc/rc-ir-raw.c
@@ -247,91 +247,6 @@ static int change_protocol(struct rc_dev *dev, u64 *rc_type)
 }
 
 /**
- * ir_raw_gen_manchester() - Encode data with Manchester (bi-phase) modulation.
- * @ev:                Pointer to pointer to next free event. *@ev is incremented for
- *             each raw event filled.
- * @max:       Maximum number of raw events to fill.
- * @timings:   Manchester modulation timings.
- * @n:         Number of bits of data.
- * @data:      Data bits to encode.
- *
- * Encodes the @n least significant bits of @data using Manchester (bi-phase)
- * modulation with the timing characteristics described by @timings, writing up
- * to @max raw IR events using the *@ev pointer.
- *
- * Returns:    0 on success.
- *             -ENOBUFS if there isn't enough space in the array to fit the
- *             full encoded data. In this case all @max events will have been
- *             written.
- */
-int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max,
-                         const struct ir_raw_timings_manchester *timings,
-                         unsigned int n, unsigned int data)
-{
-       bool need_pulse;
-       unsigned int i;
-       int ret = -ENOBUFS;
-
-       i = 1 << (n - 1);
-
-       if (timings->leader) {
-               if (!max--)
-                       return ret;
-               if (timings->pulse_space_start) {
-                       init_ir_raw_event_duration((*ev)++, 1, timings->leader);
-
-                       if (!max--)
-                               return ret;
-                       init_ir_raw_event_duration((*ev), 0, timings->leader);
-               } else {
-                       init_ir_raw_event_duration((*ev), 1, timings->leader);
-               }
-               i >>= 1;
-       } else {
-               /* continue existing signal */
-               --(*ev);
-       }
-       /* from here on *ev will point to the last event rather than the next */
-
-       while (n && i > 0) {
-               need_pulse = !(data & i);
-               if (timings->invert)
-                       need_pulse = !need_pulse;
-               if (need_pulse == !!(*ev)->pulse) {
-                       (*ev)->duration += timings->clock;
-               } else {
-                       if (!max--)
-                               goto nobufs;
-                       init_ir_raw_event_duration(++(*ev), need_pulse,
-                                                  timings->clock);
-               }
-
-               if (!max--)
-                       goto nobufs;
-               init_ir_raw_event_duration(++(*ev), !need_pulse,
-                                          timings->clock);
-               i >>= 1;
-       }
-
-       if (timings->trailer_space) {
-               if (!(*ev)->pulse)
-                       (*ev)->duration += timings->trailer_space;
-               else if (!max--)
-                       goto nobufs;
-               else
-                       init_ir_raw_event_duration(++(*ev), 0,
-                                                  timings->trailer_space);
-       }
-
-       ret = 0;
-nobufs:
-       /* point to the next event rather than last event before returning */
-       ++(*ev);
-       return ret;
-}
-EXPORT_SYMBOL(ir_raw_gen_manchester);
-
-/**
  * ir_raw_encode_scancode() - Encode a scancode as raw events
  *
  * @protocols:         permitted protocols