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| author | Sean Young <sean@mess.org> | 2020-01-17 17:46:36 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-03-12 09:20:46 +0100 |
| commit | e6c6d7d4a15d499821c41b7e43d92b29c98293ad (patch) | |
| tree | 4f93df5e5aa01446cc71848e64d797112b4e36d2 /drivers/media/rc/lirc_dev.c | |
| parent | 00c43088aa680989407b6afbda295f67b3f123f1 (diff) | |
| download | linux-e6c6d7d4a15d499821c41b7e43d92b29c98293ad.tar.bz2 | |
media: rc: make scancodes 64 bit
There are many protocols that encode more than 32 bit. We want 64 bit
support so that BPF IR decoders can decode more than 32 bit. None of
the existing kernel IR decoders/encoders support 64 bit, for now.
The MSC_SCAN event can only contain 32 bit scancodes, so we only generate
MSC_SCAN events if the scancode fits into 32 bits. The full 64 bit
scancode can be read from the lirc chardev.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/rc/lirc_dev.c')
| -rw-r--r-- | drivers/media/rc/lirc_dev.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c index 9a8c1cf54ac4..583e4f32a0da 100644 --- a/drivers/media/rc/lirc_dev.c +++ b/drivers/media/rc/lirc_dev.c @@ -269,12 +269,7 @@ static ssize_t ir_lirc_transmit_ir(struct file *file, const char __user *buf, goto out_unlock; } - /* - * The scancode field in lirc_scancode is 64-bit simply - * to future-proof it, since there are IR protocols encode - * use more than 32 bits. For now only 32-bit protocols - * are supported. - */ + /* We only have encoders for 32-bit protocols. */ if (scan.scancode > U32_MAX || !rc_validate_scancode(scan.rc_proto, scan.scancode)) { ret = -EINVAL; |