diff options
| author | Sean Young | 2020-08-23 19:23:05 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2020-09-03 16:18:55 +0200 |
| commit | 528222d853f9283110f0118dd71d9f0ad686d586 (patch) | |
| tree | a1bca46afe71308a2832208ee2ea9c0c5b196338 /drivers/media/rc/ir-mce_kbd-decoder.c | |
| parent | 32c3db3d9873ef822a9544259d68d0cd31c7bc64 (diff) | |
media: rc: harmonize infrared durations to microseconds
rc-core kapi uses nanoseconds for infrared durations for receiving, and
microseconds for sending. The uapi already uses microseconds for both,
so this patch does not change the uapi.
Infrared durations do not need nanosecond resolution. IR protocols do not
have durations shorter than about 100 microseconds. Some IR hardware offers
250 microseconds resolution, which is sufficient for most protocols.
Better hardware has 50 microsecond resolution and is enough for every
protocol I am aware off.
Unify on microseconds everywhere. This simplifies the code since less
conversion between microseconds and nanoseconds needs to be done.
This affects:
- rx_resolution member of struct rc_dev
- timeout member of struct rc_dev
- duration member in struct ir_raw_event
Cc: "Bruno Prémont" <bonbons@linux-vserver.org>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Patrick Lerda <patrick9876@free.fr>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Sean Wang <sean.wang@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: "David Härdeman" <david@hardeman.nu>
Cc: Benjamin Valentin <benpicco@googlemail.com>
Cc: Antti Palosaari <crope@iki.fi>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/rc/ir-mce_kbd-decoder.c')
| -rw-r--r-- | drivers/media/rc/ir-mce_kbd-decoder.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/rc/ir-mce_kbd-decoder.c b/drivers/media/rc/ir-mce_kbd-decoder.c index cfe837f773c1..90350f25d8dd 100644 --- a/drivers/media/rc/ir-mce_kbd-decoder.c +++ b/drivers/media/rc/ir-mce_kbd-decoder.c @@ -21,7 +21,7 @@ * input device for the remote, rather than the keyboard/mouse one. */ -#define MCIR2_UNIT 333333 /* ns */ +#define MCIR2_UNIT 333 /* us */ #define MCIR2_HEADER_NBITS 5 #define MCIR2_MOUSE_NBITS 29 #define MCIR2_KEYBOARD_NBITS 32 @@ -231,7 +231,7 @@ static int ir_mce_kbd_decode(struct rc_dev *dev, struct ir_raw_event ev) again: dev_dbg(&dev->dev, "started at state %i (%uus %s)\n", - data->state, TO_US(ev.duration), TO_STR(ev.pulse)); + data->state, ev.duration, TO_STR(ev.pulse)); if (!geq_margin(ev.duration, MCIR2_UNIT, MCIR2_UNIT / 2)) return 0; @@ -353,7 +353,7 @@ again: out: dev_dbg(&dev->dev, "failed at state %i (%uus %s)\n", - data->state, TO_US(ev.duration), TO_STR(ev.pulse)); + data->state, ev.duration, TO_STR(ev.pulse)); data->state = STATE_INACTIVE; return -EINVAL; } |