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authorSean Young <sean@mess.org>2018-01-05 13:38:43 +0000
committerSean Young <sean@mess.org>2018-01-05 15:13:15 +0000
commit6dc84d93e557c787ae74a808d93a8493f85a7800 (patch)
treea52f366fdb969d6a8d442cb3781b3cd6fe88bb34
parent3da4f8704df6a4959687b916ecfcbfcf3ab306d1 (diff)
media: rc: do not remove first bit if leader pulse is presentfor-v4.16c
The rc5 protocol does not have a leading pulse or space, but we encode the first bit using a single leading pulse. For other protocols, the leading pulse or space does not represent any bit. So, don't remove the first bit if a leading pulse is present. Cc: Antti Seppälä <a.seppala@gmail.com> Signed-off-by: Sean Young <sean@mess.org>
-rw-r--r--drivers/media/rc/ir-mce_kbd-decoder.c4
-rw-r--r--drivers/media/rc/ir-rc5-decoder.c13
-rw-r--r--drivers/media/rc/ir-rc6-decoder.c4
-rw-r--r--drivers/media/rc/rc-ir-raw.c1
4 files changed, 12 insertions, 10 deletions
diff --git a/drivers/media/rc/ir-mce_kbd-decoder.c b/drivers/media/rc/ir-mce_kbd-decoder.c
index 2a279b3b9c0a..2c3df02e05ff 100644
--- a/drivers/media/rc/ir-mce_kbd-decoder.c
+++ b/drivers/media/rc/ir-mce_kbd-decoder.c
@@ -452,11 +452,11 @@ static int ir_mce_kbd_encode(enum rc_proto protocol, u32 scancode,
if (protocol == RC_PROTO_MCIR2_KBD) {
raw = scancode |
((u64)MCIR2_KEYBOARD_HEADER << MCIR2_KEYBOARD_NBITS);
- len = MCIR2_KEYBOARD_NBITS + MCIR2_HEADER_NBITS + 1;
+ len = MCIR2_KEYBOARD_NBITS + MCIR2_HEADER_NBITS;
} else {
raw = scancode |
((u64)MCIR2_MOUSE_HEADER << MCIR2_MOUSE_NBITS);
- len = MCIR2_MOUSE_NBITS + MCIR2_HEADER_NBITS + 1;
+ len = MCIR2_MOUSE_NBITS + MCIR2_HEADER_NBITS;
}
ret = ir_raw_gen_manchester(&e, max, &ir_mce_kbd_timings, len, raw);
diff --git a/drivers/media/rc/ir-rc5-decoder.c b/drivers/media/rc/ir-rc5-decoder.c
index a1d6c955ffc8..11a28f8772da 100644
--- a/drivers/media/rc/ir-rc5-decoder.c
+++ b/drivers/media/rc/ir-rc5-decoder.c
@@ -225,9 +225,9 @@ static int ir_rc5_encode(enum rc_proto protocol, u32 scancode,
/* encode data */
data = !commandx << 12 | system << 6 | command;
- /* Modulate the data */
+ /* First bit is encoded by leader_pulse */
ret = ir_raw_gen_manchester(&e, max, &ir_rc5_timings,
- RC5_NBITS, data);
+ RC5_NBITS - 1, data);
if (ret < 0)
return ret;
} else if (protocol == RC_PROTO_RC5X_20) {
@@ -240,10 +240,11 @@ static int ir_rc5_encode(enum rc_proto protocol, u32 scancode,
/* encode data */
data = commandx << 18 | system << 12 | command << 6 | xdata;
- /* Modulate the data */
+ /* First bit is encoded by leader_pulse */
pre_space_data = data >> (RC5X_NBITS - CHECK_RC5X_NBITS);
ret = ir_raw_gen_manchester(&e, max, &ir_rc5x_timings[0],
- CHECK_RC5X_NBITS, pre_space_data);
+ CHECK_RC5X_NBITS - 1,
+ pre_space_data);
if (ret < 0)
return ret;
ret = ir_raw_gen_manchester(&e, max - (e - events),
@@ -254,8 +255,10 @@ static int ir_rc5_encode(enum rc_proto protocol, u32 scancode,
return ret;
} else if (protocol == RC_PROTO_RC5_SZ) {
/* RC5-SZ scancode is raw enough for Manchester as it is */
+ /* First bit is encoded by leader_pulse */
ret = ir_raw_gen_manchester(&e, max, &ir_rc5_sz_timings,
- RC5_SZ_NBITS, scancode & 0x2fff);
+ RC5_SZ_NBITS - 1,
+ scancode & 0x2fff);
if (ret < 0)
return ret;
} else {
diff --git a/drivers/media/rc/ir-rc6-decoder.c b/drivers/media/rc/ir-rc6-decoder.c
index 422dec08738c..55bb19bbd4e9 100644
--- a/drivers/media/rc/ir-rc6-decoder.c
+++ b/drivers/media/rc/ir-rc6-decoder.c
@@ -327,7 +327,7 @@ static int ir_rc6_encode(enum rc_proto protocol, u32 scancode,
/* Modulate the header (Start Bit & Mode-0) */
ret = ir_raw_gen_manchester(&e, max - (e - events),
&ir_rc6_timings[0],
- RC6_HEADER_NBITS + 1, (1 << 3));
+ RC6_HEADER_NBITS, (1 << 3));
if (ret < 0)
return ret;
@@ -365,7 +365,7 @@ static int ir_rc6_encode(enum rc_proto protocol, u32 scancode,
/* Modulate the header (Start Bit & Header-version 6 */
ret = ir_raw_gen_manchester(&e, max - (e - events),
&ir_rc6_timings[0],
- RC6_HEADER_NBITS + 1, (1 << 3 | 6));
+ RC6_HEADER_NBITS, (1 << 3 | 6));
if (ret < 0)
return ret;
diff --git a/drivers/media/rc/rc-ir-raw.c b/drivers/media/rc/rc-ir-raw.c
index 8500b57923c0..18504870b9f0 100644
--- a/drivers/media/rc/rc-ir-raw.c
+++ b/drivers/media/rc/rc-ir-raw.c
@@ -256,7 +256,6 @@ int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max,
init_ir_raw_event_duration(++(*ev), 0,
timings->leader_space);
}
- i >>= 1;
} else {
/* continue existing signal */
--(*ev);

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