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| author | Sean Young <sean@mess.org> | 2020-08-23 19:23:05 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-09-03 16:18:55 +0200 |
| commit | 528222d853f9283110f0118dd71d9f0ad686d586 (patch) | |
| tree | a1bca46afe71308a2832208ee2ea9c0c5b196338 /drivers/media/common | |
| parent | 32c3db3d9873ef822a9544259d68d0cd31c7bc64 (diff) | |
| download | linux-stable-528222d853f9283110f0118dd71d9f0ad686d586.tar.gz linux-stable-528222d853f9283110f0118dd71d9f0ad686d586.tar.bz2 linux-stable-528222d853f9283110f0118dd71d9f0ad686d586.zip | |
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/common')
| -rw-r--r-- | drivers/media/common/siano/smsir.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/common/siano/smsir.c b/drivers/media/common/siano/smsir.c index 79bd627f84b8..d85c78c104b9 100644 --- a/drivers/media/common/siano/smsir.c +++ b/drivers/media/common/siano/smsir.c @@ -27,7 +27,7 @@ void sms_ir_event(struct smscore_device_t *coredev, const char *buf, int len) for (i = 0; i < len >> 2; i++) { struct ir_raw_event ev = { - .duration = abs(samples[i]) * 1000, /* Convert to ns */ + .duration = abs(samples[i]), .pulse = (samples[i] > 0) ? false : true }; @@ -48,7 +48,7 @@ int sms_ir_init(struct smscore_device_t *coredev) return -ENOMEM; coredev->ir.controller = 0; /* Todo: vega/nova SPI number */ - coredev->ir.timeout = IR_DEFAULT_TIMEOUT; + coredev->ir.timeout = US_TO_NS(IR_DEFAULT_TIMEOUT); pr_debug("IR port %d, timeout %d ms\n", coredev->ir.controller, coredev->ir.timeout); |