Revert "[media] rc: ir-rc6-decoder: Add encode capability"

This reverts commit cf257e288ad3a134d4bb809c542a3ae6c87ddfa3.

The current code is not mature enough, the API should allow a single
protocol to be specified. Also, the current code contains heuristics
that will depend on module load order.

Signed-off-by: David Härdeman <david@hardeman.nu>
Acked-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 0 insertions, 122 deletions

diff --git a/drivers/media/rc/ir-rc6-decoder.c b/drivers/media/rc/ir-rc6-decoder.c
index f9c70baf6e0c..d16bc67af732 100644
--- a/drivers/media/rc/ir-rc6-decoder.c
+++ b/drivers/media/rc/ir-rc6-decoder.c
@@ -291,133 +291,11 @@ out:
         return -EINVAL;
 }
 
-static struct ir_raw_timings_manchester ir_rc6_timings[4] = {
-        {
-                .leader                 = RC6_PREFIX_PULSE,
-                .pulse_space_start      = 0,
-                .clock                  = RC6_UNIT,
-                .invert                 = 1,
-                .trailer_space          = RC6_PREFIX_SPACE,
-        },
-        {
-                .clock                  = RC6_UNIT,
-                .invert                 = 1,
-        },
-        {
-                .clock                  = RC6_UNIT * 2,
-                .invert                 = 1,
-        },
-        {
-                .clock                  = RC6_UNIT,
-                .invert                 = 1,
-                .trailer_space          = RC6_SUFFIX_SPACE,
-        },
-};
-
-static int ir_rc6_validate_filter(const struct rc_scancode_filter *scancode,
-                                  unsigned int important_bits)
-{
-        /* all important bits of scancode should be set in mask */
-        if (~scancode->mask & important_bits)
-                return -EINVAL;
-        /* extra bits in mask should be zero in data */
-        if (scancode->mask & scancode->data & ~important_bits)
-                return -EINVAL;
-        return 0;
-}
-
-/**
- * ir_rc6_encode() - Encode a scancode as a stream of raw events
- *
- * @protocols:  allowed protocols
- * @scancode:   scancode filter describing scancode (helps distinguish between
- *              protocol subtypes when scancode is ambiguous)
- * @events:     array of raw ir events to write into
- * @max:        maximum size of @events
- *
- * Returns:     The number of events written.
- *              -ENOBUFS if there isn't enough space in the array to fit the
- *              encoding. In this case all @max events will have been written.
- *              -EINVAL if the scancode is ambiguous or invalid.
- */
-static int ir_rc6_encode(u64 protocols,
-                         const struct rc_scancode_filter *scancode,
-                         struct ir_raw_event *events, unsigned int max)
-{
-        int ret;
-        struct ir_raw_event *e = events;
-
-        if (protocols & RC_BIT_RC6_0 &&
-            !ir_rc6_validate_filter(scancode, 0xffff)) {
-
-                /* Modulate the preamble */
-                ret = ir_raw_gen_manchester(&e, max, &ir_rc6_timings[0], 0, 0);
-                if (ret < 0)
-                        return ret;
-
-                /* Modulate the header (Start Bit & Mode-0) */
-                ret = ir_raw_gen_manchester(&e, max - (e - events),
-                                            &ir_rc6_timings[1],
-                                            RC6_HEADER_NBITS, (1 << 3));
-                if (ret < 0)
-                        return ret;
-
-                /* Modulate Trailer Bit */
-                ret = ir_raw_gen_manchester(&e, max - (e - events),
-                                            &ir_rc6_timings[2], 1, 0);
-                if (ret < 0)
-                        return ret;
-
-                /* Modulate rest of the data */
-                ret = ir_raw_gen_manchester(&e, max - (e - events),
-                                            &ir_rc6_timings[3], RC6_0_NBITS,
-                                            scancode->data);
-                if (ret < 0)
-                        return ret;
-
-        } else if (protocols & (RC_BIT_RC6_6A_20 | RC_BIT_RC6_6A_24 |
-                                RC_BIT_RC6_6A_32 | RC_BIT_RC6_MCE) &&
-                   !ir_rc6_validate_filter(scancode, 0x8fffffff)) {
-
-                /* Modulate the preamble */
-                ret = ir_raw_gen_manchester(&e, max, &ir_rc6_timings[0], 0, 0);
-                if (ret < 0)
-                        return ret;
-
-                /* Modulate the header (Start Bit & Header-version 6 */
-                ret = ir_raw_gen_manchester(&e, max - (e - events),
-                                            &ir_rc6_timings[1],
-                                            RC6_HEADER_NBITS, (1 << 3 | 6));
-                if (ret < 0)
-                        return ret;
-
-                /* Modulate Trailer Bit */
-                ret = ir_raw_gen_manchester(&e, max - (e - events),
-                                            &ir_rc6_timings[2], 1, 0);
-                if (ret < 0)
-                        return ret;
-
-                /* Modulate rest of the data */
-                ret = ir_raw_gen_manchester(&e, max - (e - events),
-                                            &ir_rc6_timings[3],
-                                            fls(scancode->mask),
-                                            scancode->data);
-                if (ret < 0)
-                        return ret;
-
-        } else {
-                return -EINVAL;
-        }
-
-        return e - events;
-}
-
 static struct ir_raw_handler rc6_handler = {
         .protocols      = RC_BIT_RC6_0 | RC_BIT_RC6_6A_20 |
                           RC_BIT_RC6_6A_24 | RC_BIT_RC6_6A_32 |
                           RC_BIT_RC6_MCE,
         .decode         = ir_rc6_decode,
-        .encode         = ir_rc6_encode,
 };
 
 static int __init ir_rc6_decode_init(void)