diff options
Diffstat (limited to 'drivers/media/rc/ir-nec-decoder.c')
| -rw-r--r-- | drivers/media/rc/ir-nec-decoder.c | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/drivers/media/rc/ir-nec-decoder.c b/drivers/media/rc/ir-nec-decoder.c index 7b58b4a1729..35c42e5e270 100644 --- a/drivers/media/rc/ir-nec-decoder.c +++ b/drivers/media/rc/ir-nec-decoder.c @@ -1,6 +1,6 @@ /* ir-nec-decoder.c - handle NEC IR Pulse/Space protocol * - * Copyright (C) 2010 by Mauro Carvalho Chehab <mchehab@redhat.com> + * Copyright (C) 2010 by Mauro Carvalho Chehab * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -13,6 +13,7 @@ */ #include <linux/bitrev.h> +#include <linux/module.h> #include "rc-core-priv.h" #define NEC_NBITS 32 @@ -49,8 +50,9 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev) struct nec_dec *data = &dev->raw->nec; u32 scancode; u8 address, not_address, command, not_command; + bool send_32bits = false; - if (!(dev->raw->enabled_protocols & RC_TYPE_NEC)) + if (!rc_protocols_enabled(dev, RC_BIT_NEC)) return 0; if (!is_timing_event(ev)) { @@ -68,7 +70,7 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev) if (!ev.pulse) break; - if (eq_margin(ev.duration, NEC_HEADER_PULSE, NEC_UNIT / 2)) { + if (eq_margin(ev.duration, NEC_HEADER_PULSE, NEC_UNIT * 2)) { data->is_nec_x = false; data->necx_repeat = false; } else if (eq_margin(ev.duration, NECX_HEADER_PULSE, NEC_UNIT / 2)) @@ -84,7 +86,7 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev) if (ev.pulse) break; - if (eq_margin(ev.duration, NEC_HEADER_SPACE, NEC_UNIT / 2)) { + if (eq_margin(ev.duration, NEC_HEADER_SPACE, NEC_UNIT)) { data->state = STATE_BIT_PULSE; return 0; } else if (eq_margin(ev.duration, NEC_REPEAT_SPACE, NEC_UNIT / 2)) { @@ -164,10 +166,15 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev) if ((command ^ not_command) != 0xff) { IR_dprintk(1, "NEC checksum error: received 0x%08x\n", data->bits); - break; + send_32bits = true; } - if ((address ^ not_address) != 0xff) { + if (send_32bits) { + /* NEC transport, but modified protocol, used by at + * least Apple and TiVo remotes */ + scancode = data->bits; + IR_dprintk(1, "NEC (modified) scancode 0x%08x\n", scancode); + } else if ((address ^ not_address) != 0xff) { /* Extended NEC */ scancode = address << 16 | not_address << 8 | @@ -187,14 +194,14 @@ static int ir_nec_decode(struct rc_dev *dev, struct ir_raw_event ev) return 0; } - IR_dprintk(1, "NEC decode failed at state %d (%uus %s)\n", - data->state, TO_US(ev.duration), TO_STR(ev.pulse)); + IR_dprintk(1, "NEC decode failed at count %d state %d (%uus %s)\n", + data->count, data->state, TO_US(ev.duration), TO_STR(ev.pulse)); data->state = STATE_INACTIVE; return -EINVAL; } static struct ir_raw_handler nec_handler = { - .protocols = RC_TYPE_NEC, + .protocols = RC_BIT_NEC, .decode = ir_nec_decode, }; @@ -215,6 +222,6 @@ module_init(ir_nec_decode_init); module_exit(ir_nec_decode_exit); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); +MODULE_AUTHOR("Mauro Carvalho Chehab"); MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)"); MODULE_DESCRIPTION("NEC IR protocol decoder"); |