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path: root/drivers/media/rc/ir-lirc-codec.c
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2012-10-27[media] rc-core: add separate defines for protocol bitmaps and numbersDavid Härdeman
The RC_TYPE_* defines are currently used both where a single protocol is expected and where a bitmap of protocols is expected. Functions like rc_keydown() and functions which add/remove entries to the keytable want a single protocol. Future userspace APIs would also benefit from numeric protocols (rather than bitmap ones). Keytables are smaller if they can use a small(ish) integer rather than a bitmap. Other functions or struct members (e.g. allowed_protos, enabled_protocols, etc) accept multiple protocols and need a bitmap. Using different types reduces the risk of programmer error. Using a protocol enum whereever possible also makes for a more future-proof user-space API as we don't need to worry about a sufficient number of bits being available (e.g. in structs used for ioctl() calls). The use of both a number and a corresponding bit is dalso one in e.g. the input subsystem as well (see all the references to set/clear bit when changing keytables for example). This patch separate the different usages in preparation for upcoming patches. Where a single protocol is expected, enum rc_type is used; where one or more protocol(s) are expected, something like u64 is used. The patch has been rewritten so that the format of the sysfs "protocols" file is no longer altered (at the loss of some detail). The file itself should probably be deprecated in the future though. Signed-off-by: David Härdeman <david@hardeman.nu> Cc: Andy Walls <awalls@md.metrocast.net> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Cc: Antti Palosaari <crope@iki.fi> Cc: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-06[media] rc-core: fix return codes in ir_lirc_ioctl()Dan Carpenter
These should be -ENOSYS because not -EINVAL. Reported-by: Sean Young <sean@mess.org> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-15[media] rc: fix buffer overrunSean Young
"[media] rc-core: move timeout and checks to lirc" introduced a buffer overrun by passing the number of bytes, rather than the number of samples, to the transmit function. Signed-off-by: Sean Young <sean@mess.org> Acked-by: David Härdeman <david@hardeman.nu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-08-13[media] rc-core: move timeout and checks to lircDavid Härdeman
The lirc TX functionality expects the process which writes (TX) data to the lirc dev to sleep until the actual data has been transmitted by the hardware. Since the same timeout calculation is duplicated in more than one driver (and would have to be duplicated in even more drivers as they gain TX support), it makes sense to move this timeout calculation to the lirc layer instead. At the same time, centralize some of the sanity checks. Signed-off-by: David Härdeman <david@hardeman.nu> Cc: Jarod Wilson <jwilson@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-08-13[media] rc: transmit on device which does not support it should failSean Young
Currently write() will return 0 if an IR device does not support sending. Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-07Merge branch 'modsplit-Oct31_2011' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux * 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits) Revert "tracing: Include module.h in define_trace.h" irq: don't put module.h into irq.h for tracking irqgen modules. bluetooth: macroize two small inlines to avoid module.h ip_vs.h: fix implicit use of module_get/module_put from module.h nf_conntrack.h: fix up fallout from implicit moduleparam.h presence include: replace linux/module.h with "struct module" wherever possible include: convert various register fcns to macros to avoid include chaining crypto.h: remove unused crypto_tfm_alg_modname() inline uwb.h: fix implicit use of asm/page.h for PAGE_SIZE pm_runtime.h: explicitly requires notifier.h linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h miscdevice.h: fix up implicit use of lists and types stop_machine.h: fix implicit use of smp.h for smp_processor_id of: fix implicit use of errno.h in include/linux/of.h of_platform.h: delete needless include <linux/module.h> acpi: remove module.h include from platform/aclinux.h miscdevice.h: delete unnecessary inclusion of module.h device_cgroup.h: delete needless include <linux/module.h> net: sch_generic remove redundant use of <linux/module.h> net: inet_timewait_sock doesnt need <linux/module.h> ... Fix up trivial conflicts (other header files, and removal of the ab3550 mfd driver) in - drivers/media/dvb/frontends/dibx000_common.c - drivers/media/video/{mt9m111.c,ov6650.c} - drivers/mfd/ab3550-core.c - include/linux/dmaengine.h
2011-10-31drivers/media: Add module.h to all files using it implicitlyPaul Gortmaker
A pending cleanup will mean that module.h won't be implicitly everywhere anymore. Make sure the modular drivers in clocksource are actually calling out for <module.h> explicitly in advance. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-11[media] rc/ir-lirc-codec: cleanup __user tagsDan Carpenter
The code here treated user pointers correctly, but the __user tags weren't used correctly so it caused Sparse warnings: Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] rc-core: lirc use unsigned intDavid Härdeman
Durations can never be negative, so it makes sense to consistently use unsigned int for LIRC transmission. Contrary to the initial impression, this shouldn't actually change the userspace API. Signed-off-by: David Härdeman <david@hardeman.nu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-01-31[media] rc/ir-lirc-codec: add back debug spewJarod Wilson
Some occasionally useful debug spew disappeared as part of a feature update a while back, and I'm finding myself in need of it again to help diagnose some issues. Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29[media] rc: ir-lirc-codec: fix potential integer overflowVasiliy Kulikov
'n' may be bigger than MAX_INT*sizeof(int), if so checking of truncated (int)(n/sizeof(int)) for LIRCBUF_SIZE overflow and then using nontruncated 'count' doesn't make sense. Also n may be up to sizeof(int)-1 bytes bigger than expected, so check value of (n % sizeof(int)) too. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Acked-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29[media] rc: Rename remote controller type to rc_type instead of ir_typeMauro Carvalho Chehab
for i in `find drivers/staging -type f -name *.[ch]` `find include/media -type f -name *.[ch]` `find drivers/media -type f -name *.[ch]`; do sed s,IR_TYPE,RC_TYPE,g <$i >a && mv a $i; done for i in `find drivers/staging -type f -name *.[ch]` `find include/media -type f -name *.[ch]` `find drivers/media -type f -name *.[ch]`; do sed s,ir_type,rc_type,g <$i >a && mv a $i; done Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29[media] rc: rename the remaining things to rc_coreMauro Carvalho Chehab
The Remote Controller subsystem is meant to be used not only by Infra Red but also for similar types of Remote Controllers. The core is not specific to Infra Red. As such, rename: - ir-core.h to rc-core.h - IR_CORE to RC_CORE - namespace inside rc-core.c/rc-core.h To be consistent with the other changes. No functional change on this patch. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29[media] ir-core: make struct rc_dev the primary interfaceDavid Härdeman
This patch merges the ir_input_dev and ir_dev_props structs into a single struct called rc_dev. The drivers and various functions in rc-core used by the drivers are also changed to use rc_dev as the primary interface when dealing with rc-core. This means that the input_dev is abstracted away from the drivers which is necessary if we ever want to support multiple input devs per rc device. The new API is similar to what the input subsystem uses, i.e: rc_device_alloc() rc_device_free() rc_device_register() rc_device_unregister() [mchehab@redhat.com: Fix compilation on mceusb and cx231xx, due to merge conflicts] Signed-off-by: David Härdeman <david@hardeman.nu> Acked-by: Jarod Wilson <jarod@redhat.com> Tested-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29[media] Rename rc-core files from ir- to rc-Mauro Carvalho Chehab
As protocol decoders are specific to InfraRed, keep their names as-is. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-29[media] rename drivers/media/IR to drives/media/rcMauro Carvalho Chehab
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>