This introduces a new lirc mode: scancode. Any device which can send raw IR
can now also send scancodes.
int main()
{
int mode, fd = open("/dev/lirc0", O_RDWR);
mode = LIRC_MODE_SCANCODE;
if (ioctl(fd, LIRC_SET_SEND_MODE, &mode)) {
// kernel too old or lirc does not support transmit
}
struct lirc_scancode scancode = {
.scancode = 0x1e3d,
.rc_proto = RC_PROTO_RC5,
};
write(fd, &scancode, sizeof(scancode));
close(fd);
}
The other fields of lirc_scancode must be set to 0.
Note that toggle (rc5, rc6) and repeats (nec) are not implemented. Nor is
there a method for holding down a key for a period.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 9b6192589b)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
LIRCCODE is a lirc mode where a driver produces driver-dependent
codes for receive and transmit. No driver uses this any more. The
LIRC_GET_LENGTH ioctl was used for this mode only.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 4e3cd001fd)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Since commit d57ea877af ("media: rc: per-protocol repeat period"), most
IR protocols have a lower keyup timeout. This causes problems on the
ite-cir, which has default IR timeout of 200ms.
Since the IR decoders read the trailing space, with a IR timeout of 200ms,
the last keydown will have at least a delay of 200ms. This is more than
the protocol timeout of e.g. rc-6 (which is 164ms). As a result the last
IR will be interpreted as a new keydown event, and we get two keypresses.
Revert the protocol timeout to 250ms, except for cec which needs a timeout
of 550ms.
Fixes: d57ea877af ("media: rc: per-protocol repeat period")
Cc: <stable@vger.kernel.org> # 4.14
Reported-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Sean Young <sean@mess.org>
Tested-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 67f0f15ad5)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
If the kernel is built without device tree, this driver cannot be
used and without gpiolib it cannot control any gpio pin.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 5288879390)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
When receiving an nec repeat, rc_repeat() is called and then rc_keydown()
with the last decoded scancode. That last call is redundant.
Fixes: 265a2988d2 ("media: rc-core: consistent use of rc_repeat()")
Cc: <stable@vger.kernel.org> # v4.14
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 829bbf2688)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
There are no users of this functionality (ir-lirc-codec.c has its own
implementation and lirc_zilog.c doesn't use it) so remove it.
This only affects users of the lirc kapi, not rc-core drivers.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 2265425fd9)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
The 0-day robot reports:
drivers/media/rc/gpio-ir-recv.c: In function 'gpio_ir_recv_irq':
>> drivers/media/rc/gpio-ir-recv.c:38:8: error: implicit declaration of function 'gpiod_get_value' [-Werror=implicit-function-declaration]
Fixes: eed008e605 ("[media] media: rc: gpio-ir-recv: use gpiolib API")
For some reason only partial patch was applied. Also include
gpio/consumer.h otherwise compile test fails.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Acked-by: Sean Young <sean@mess.org>
(cherry picked from commit c130107721)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
gpio_ir_recv_platform_data are not used anywhere in kernel tree,
so remove it.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 5c95878f61)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Conflicts:
drivers/media/rc/gpio-ir-recv.c
Use of devm_request_irq simplifies error unwinding and as
free_irq was the last user of driver remove function,
remove it too.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 1a2a60b1af)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Requesting any context irq is not actually great idea since threaded
interrupt handler is run at too unpredictable time which turns
timing information wrong. Fix it by requesting regular interrupt.
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 375929f9f4)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This name is also stored in the input's device name, but that
is not available in TX only hardware (no input device).
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit b9f407e31c)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
If the protocols of an rc device cannot be changed, ensure the sysfs
file is not writable.
This makes it possible to detect this from userspace, so ir-keytable
can deal with case without giving an error.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 6d75db305b)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
rc scancode drivers without change_protocol should have all
protocols enabled at all time. This was only true for cec and
ir-kbd-i2c.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 831c4c81e8)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Make this const as it is only stored in the type field of a device
structure, which is const.
Done using Coccinelle.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit f03f02f9d2)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
The use of two separate structs (lirc_dev aka lirc_driver and irctl) makes
it much harder to follow the proper lifetime of the various structs and
necessitates hacks such as keeping a copy of struct lirc_dev inside
struct irctl.
Merging the two structs means that lirc_dev can properly manage the
lifetime of the resulting struct and simplifies the code at the same time.
[mchehab@s-opensource.com: fix merge conflict]
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit b15e39379f)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Introduce two new functions so that the API for lirc_dev matches that
of the rc-core and input subsystems.
This means that lirc_dev structs are managed using the usual four
functions:
lirc_allocate_device
lirc_free_device
lirc_register_device
lirc_unregister_device
The functions are pretty simplistic at this point, later patches will put
more flesh on the bones of both.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
(cherry picked from commit 6ecccc379b)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Using the kernel-provided IDA simplifies the code and makes it possible
to remove the lirc_dev_lock mutex.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 46c8f47711)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Use the irctl mutex for all device operations and only use lirc_dev_lock
to protect the irctls array. Also, make sure that the device is alive
early in each fops function before doing anything else.
Since this patch touches nearly every line where the irctl mutex is
taken/released, it also renames the mutex at the same time (the name
irctl_lock will be misleading once struct irctl goes away in later
patches).
[mchehab@s-opensource.com: fix a merge conflict]
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 3381b779a7)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Make setting chunk_size and buffer_size mandatory for drivers which
expect lirc_dev to allocate the lirc_buffer (i.e. ir-lirc-codec) and
don't set them in lirc-zilog (which creates its own buffer).
Also remove an unnecessary copy of chunk_size in struct irctl (the
same information is already available from struct lirc_buffer).
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit b145ef94f6)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
By making better use of file->private_data in lirc_dev we can avoid
digging around in the irctls[] array, thereby simplifying the code.
External drivers need to use lirc_get_pdata() instead of mucking around
in file->private_data.
The newly introduced lirc_init_pdata() function isn't very elegant, but
it's a stopgap measure which can be removed once lirc_zilog is converted
to rc-core.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit 615cd3fe6c)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
All users of lirc_register_driver() uses dynamic minor allocation,
therefore we can remove the ability to explicitly request a given number.
This changes the function prototype of lirc_unregister_driver() to also
take a struct lirc_driver pointer as the sole argument.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
(cherry picked from commit c3c6dd750e)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Conflicts:
drivers/staging/media/lirc/lirc_zilog.c
This reverts commit 5be2b76a9c.
Only when the lirc device is freed, should we drop our reference to
rc_dev, else we the rc_dev is freed to early. If userspace has
a file descriptor open during unplug, it goes bang.
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x7bb/0x1e10
Read of size 8 at addr ffff8801d7d61ed0 by task ir-rec/2609
-snip-
mutex_lock_nested+0x1b/0x20
? mutex_lock_nested+0x1b/0x20
rc_close.part.6+0x20/0x60 [rc_core]
rc_close+0x13/0x20 [rc_core]
lirc_dev_fop_close+0x62/0xd0 [lirc_dev]
__fput+0x236/0x410
? fput+0xb0/0xb0
? do_raw_spin_trylock+0x110/0x110
? set_rq_offline.part.70+0xa0/0xa0
____fput+0xe/0x10
task_work_run+0x116/0x180
? task_work_cancel+0x170/0x170
? _raw_spin_unlock+0x27/0x40
? switch_task_namespaces+0x5f/0x90
do_exit+0x68b/0xe80
Cc: stable@vger.kernel.org # For Kernel 4.13
Fixes: 5be2b76a9c ("[media] lirc_dev: remove superfluous get/put_device() calls")
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit a607f51e5a)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Move the calculation to where it is needed, so the result doesn't
need to be stored in the device struct.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit fce4b371fe)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
CEC needs a keypress timeout of 550ms, which is too high for the IR
protocols. Also fill in known repeat times, with 50ms error margin.
Also, combine all protocol data into one structure.
Signed-off-by: Sean Young <sean@mess.org>
Suggested-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit d57ea877af)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Since commit 12749b198fa4 ("[media] rc: saa7134: add trailing space for
timely decoding"), the workaround of inserting reset events is no
longer needed.
Note that the initial reset is not needed either; other rc-core drivers
that don't use ir_raw_event_store_edge() never call this at all.
Verified on a HVR-1150 and Raspberry Pi.
Fixes: 3f5c4c7332 ("[media] rc: fix ghost keypresses with certain hw")
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 86fe1ac0d5)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
The gpio-ir-recv driver adds timeouts which the saa7134 lacks; this
causes keypress not to arrive, and to only arrive once more IR is
received. This is what the commit below calls "ghost keypresses",
and that commit does not solve the issue completely.
This makes the IR on the HVR-1150 much more reliable and responsive.
Fixes: 3f5c4c7332 ("[media] rc: fix ghost keypresses with certain hw")
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 48b2de1971)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
The gpio-ir-recv driver does many wakeups (once per edge); the saa7134
driver has special handling to only wakeup 15ms after the first edge.
Make this part of rc-core so gpio-ir-recv also benefits from
this (so a rc-5 keypress now causes 3 wakeups rather than 24).
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit e5e26439d1)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
The NEC scancode composing and protocol type detection in
ir_nec_decode() is generic enough to be a shared function. Let's create
an inline function in rc-core.h, so that other remote control drivers
can reuse this function to save some code.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit e8ffda7862)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This is new driver which uses pwm, so it is more power-efficient
than the bit banging gpio-ir-tx driver.
Signed-off-by: Sean Young <sean@mess.org>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Matthias Reichl <hias@horus.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit db3df8765e)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
