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media: sharp: fix sharp encoding 

commit 4f7efc71891462ab7606da7039f480d7c1584a13 upstream.

The Sharp protocol[1] encoding has incorrect timings for bit space.

[1] https://www.sbprojects.net/knowledge/ir/sharp.php

Fixes: d35afc5fe0 ("[media] rc: ir-sharp-decoder: Add encode capability")
Cc: stable@vger.kernel.org
Reported-by: Joe Ferner <joe.m.ferner@gmail.com>
Closes: https://sourceforge.net/p/lirc/mailman/message/38604507/
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sean Young 2023-10-06 12:54:25 +01:00 committed by Greg Kroah-Hartman
parent 41c269083c
commit 997639c100
1 changed files with 5 additions and 3 deletions
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8
drivers/media/rc/ir-sharp-decoder.c
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@ -15,7 +15,9 @@
#define SHARP_UNIT 40 /* us */
#define SHARP_BIT_PULSE (8 * SHARP_UNIT) /* 320us */
#define SHARP_BIT_0_PERIOD (25 * SHARP_UNIT) /* 1ms (680us space) */
#define SHARP_BIT_1_PERIOD (50 * SHARP_UNIT) /* 2ms (1680ms space) */
#define SHARP_BIT_1_PERIOD (50 * SHARP_UNIT) /* 2ms (1680us space) */
#define SHARP_BIT_0_SPACE (17 * SHARP_UNIT) /* 680us space */
#define SHARP_BIT_1_SPACE (42 * SHARP_UNIT) /* 1680us space */
#define SHARP_ECHO_SPACE (1000 * SHARP_UNIT) /* 40 ms */
#define SHARP_TRAILER_SPACE (125 * SHARP_UNIT) /* 5 ms (even longer) */
@ -168,8 +170,8 @@ static const struct ir_raw_timings_pd ir_sharp_timings = {
.header_pulse = 0,
.header_space = 0,
.bit_pulse = SHARP_BIT_PULSE,
.bit_space[0] = SHARP_BIT_0_PERIOD,
.bit_space[1] = SHARP_BIT_1_PERIOD,
.bit_space[0] = SHARP_BIT_0_SPACE,
.bit_space[1] = SHARP_BIT_1_SPACE,
.trailer_pulse = SHARP_BIT_PULSE,
.trailer_space = SHARP_ECHO_SPACE,
.msb_first = 1,