diff options
Diffstat (limited to 'drivers/media/rc/ir-rc6-decoder.c')
| -rw-r--r-- | drivers/media/rc/ir-rc6-decoder.c | 122 |
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) |