- 30 Jan, 2017 39 commits
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Andi Shyti authored
The ir-spi is a simple device driver which supports the connection between an IR LED and the MOSI line of an SPI device. The driver, indeed, uses the SPI framework to stream the raw data provided by userspace through an rc character device. The chardev is handled by the LIRC framework and its functionality basically provides: - write: the driver gets a pulse/space signal and translates it to a binary signal that will be streamed to the IR led through the SPI framework. - set frequency: sets the frequency whith which the data should be sent. This is handle with ioctl with the LIRC_SET_SEND_CARRIER flag (as per lirc documentation) - set duty cycle: this is also handled with ioctl with the LIRC_SET_SEND_DUTY_CYCLE flag. The driver handles duty cycles of 50%, 60%, 70%, 75%, 80% and 90%, calculated on 16bit data. The character device is created under /dev/lircX name, where X is and ID assigned by the LIRC framework. Example of usage: fd = open("/dev/lirc0", O_RDWR); if (fd < 0) return -1; val = 608000; ret = ioctl(fd, LIRC_SET_SEND_CARRIER, &val); if (ret < 0) return -1; val = 60; ret = ioctl(fd, LIRC_SET_SEND_DUTY_CYCLE, &val); if (ret < 0) return -1; n = write(fd, buffer, BUF_LEN); if (n < 0 || n != BUF_LEN) ret = -1; close(fd); Signed-off-by:Andi Shyti <andi.shyti@samsung.com> Signed-off-by:
Sean Young <sean@mess.org> Signed-off-by:
Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Andi Shyti authored
Document the ir-spi driver's binding which is a IR led driven through the SPI line. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Andi Shyti authored
Raw IR transmitters do not need any thread listening for occurring events. Check the driver type before running the thread. Signed-off-by:
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Andi Shyti authored
IR raw transmitter driver type is specified in the enum rc_driver_type as RC_DRIVER_IR_RAW_TX which includes all those devices that transmit raw stream of bit to a receiver. The data are provided by userspace applications, therefore they don't need any input device allocation, but still they need to be registered as raw devices. Suggested-by:
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Andi Shyti authored
Move the input device allocation, map and protocol handling to different functions. Signed-off-by:
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Andi Shyti authored
The driver type can be assigned immediately when an RC device requests to the framework to allocate the device. This is an 'enum rc_driver_type' data type and specifies whether the device is a raw receiver or scancode receiver. The type will be given as parameter to the rc_allocate_device device. Change accordingly all the drivers calling rc_allocate_device() so that the device type is specified during the rc device allocation. Whenever the device type is not specified, it will be set as RC_DRIVER_SCANCODE which was the default '0' value. Suggested-by:
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Antti Seppälä authored
Nuvoton-cir utilizes the encoding capabilities of rc-core to convert scancodes from user space to pulse/space format understood by the underlying hardware. Converted samples are then written to the wakeup fifo along with other necessary configuration to enable wake up functionality. Signed-off-by:
Antti Seppälä <a.seppala@gmail.com> Signed-off-by:
James Hogan <james@albanarts.com> Signed-off-by:
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James Hogan authored
Add the s_wakeup_filter callback to the rc-loopback driver, which instead of setting the filter just feeds the scancode back through the input device so that it can be verified. Signed-off-by:
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James Hogan authored
Add support in rc-core for drivers which implement the wakeup scancode filter by encoding the scancode using the raw IR encoders. This is by way of rc_dev::encode_wakeup which should be set to true and rc_dev::allowed_wakeup_protocols should be set to the raw IR encoders. We also do not permit the mask to be set as we cannot generate IR which would match that. Signed-off-by:
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Sean Young authored
Add the capability to encode Sony scancodes as raw events. Sony uses pulse length rather than pulse distance. Signed-off-by:
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Sean Young authored
Add the capability to encode Sharp scancodes as raw events. Signed-off-by:
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Sean Young authored
Add the capability to encode Sanyo scancodes as raw events. Signed-off-by:
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Sean Young authored
Add the capability to encode JVC scancodes as raw events. Signed-off-by:
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James Hogan authored
Add the capability to encode NEC scancodes as raw events. The scancode_to_raw is pretty much taken from the img-ir NEC filter() callback, and modulation uses the pulse distance helper added in a previous commit. Signed-off-by:
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Antti Seppälä authored
Add the capability to encode RC-6 and RC-6A scancodes as raw events. The Manchester modulation helper is used several times with various timings so that RC-6 header preamble, the header, header trailing bit and the data itself can be modulated correctly. Signed-off-by:
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James Hogan authored
Add the capability to encode RC-5, RC-5X and RC-5-SZ scancodes as raw events. The Manchester modulation helper is used, and for RC-5X it is used twice with two sets of timings, the first with a short trailer space for the space in the middle, and the second with no leader so that it can continue the space. The encoding in RC-5-SZ first inserts a pulse and then simply utilizes the generic Manchester encoder available in rc-core. Signed-off-by:
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James Hogan authored
Add IR encoding helper for pulse-distance modulation as used by the NEC protocol. Signed-off-by:
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Antti Seppälä authored
Adding a simple Manchester encoder to rc-core. Manchester coding is used by at least RC-5 and RC-6 protocols and their variants. Signed-off-by:
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James Hogan authored
Add a callback to raw ir handlers for encoding and modulating a scancode to a set of raw events. This could be used for transmit, or for converting a wakeup scancode to a form that is more suitable for raw hardware wake up filters. Signed-off-by:
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Sean Young authored
unknown and other are for IR protocols for which we have no decoder, so the raw IR drivers have no chance of generating them. cec is not an IR protocol. Signed-off-by:
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Sean Young authored
Now that we can select the exact variant of the protocol for wakeup filter, the winbond-cir can use the wakeup filter rather than module parameters. Signed-off-by:
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Sean Young authored
There are two different encodings used for nec32: - The ir-nec-decoder.c decoder treats it as 32 bit msb first. - The img-ir decoder/encoder, winbond wakeup, dib0700, ir-ctl userspace, treat nec32 analogous to necx and nec: 4 bytes, each lsb first. So this format reverses the 4 bytes. There are arguments to be had for both formats, but we should not use different formats in different parts of the kernel. Selecting the second format introduces the least code churn. It does mean that the TiVo keymap needs updating. This change was submitted before as "18bc1744 [media] media: rc: change 32bit NEC scancode format", which was reverted because it was unclear what scancode rc drivers produce. There are now more examples of drivers which produce nec32 in lsb format. The TiVo keymap is verified against the Nero Liquid TiVo remote. The keymap is not for the Tivo DVR remote, which uses rc-5. Signed-off-by:
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Sean Young authored
We need to valdiate that scancodes are valid for their protocol; an incorrect necx scancode could actually be a nec scancode, for example. Signed-off-by:
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Sean Young authored
For IR wakeup, a driver has to program the hardware to wakeup at a specific IR sequence, so it makes no sense to allow multiple wakeup protocols to be selected. In the same manner the sysfs interface only allows one scancode to be provided. In addition, we need to know the specific variant of the protocol. In short, these changes are made to the wakeup_protocols sysfs entry: - list all the protocol variants rather than the protocol groups, e.g. "nec nec-x nec-32" rather than just "nec". - only allow one protocol variant to be selected rather than multiple - wakeup_filter can only be set once a protocol has been selected in wakeup_protocols. This is an API change, however the only user of this API is the img-ir, but the wakeup code was never merged to mainline, so it was never used. Signed-off-by:
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Sean Young authored
There are many variants of extended rc5. This implements the 20 bit version. Signed-off-by:
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Sean Young authored
The 2nd stop bit in rc5 is reused as an inverted 6th command bit in 20 bits rc5x. Currently the rc5x decoder sets the 6th command bit as an inverted duplicate of the lowest system bit; as a result we do not have all the command bits. Note that there are no rc5x keymaps present. Signed-off-by:
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Sean Young authored
Both the iguanair and the technotrend usb ir do not do any timeout handling in hardware, so timeout is entirely done in ir_raw_event_store_with_filter(). Any sensible timeout value will do, so allow it to be set using LIRC_SET_REC_TIMEOUT. Signed-off-by:
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Sean Young authored
No timeout is generated by serial_ir since the port only generates interrupts on edges. Some IR protocols like rc6 and rc5 need a trailing space or timeout so they know there are no more bits coming. Without it, the current key will only be reported once some more IR occurs. Signed-off-by:
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Sean Young authored
Report the correct NEC variant. Signed-off-by:
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Sean Young authored
These ioctls should not succeed if the device cannot send. Also make it clear that these ioctls should return the lirc mode, although the actual value does not change. Signed-off-by:
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Sean Young authored
Since "273b902a [media] lirc_dev: use LIRC_CAN_REC() define" these ioctls no longer work. Signed-off-by:
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Sean Young authored
LIRC_SET_SEND_CARRIER ioctl should not return the carrier used, it should return 0. Signed-off-by:
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Sean Young authored
The d680_dmb keymap has some new new mappings. Tested-by:
Vincent McIntyre <vincent.mcintyre@gmail.com> Signed-off-by:
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Heiner Kallweit authored
I think we can get rid of the spinlock protecting the kthread from being interrupted by a wakeup in certain parts. Even with the current implementation of the kthread the only lost wakeup scenario could happen if the wakeup occurs between the kfifo_len check and setting the state to TASK_INTERRUPTIBLE. In the changed version we could lose a wakeup if it occurs between processing the fifo content and setting the state to TASK_INTERRUPTIBLE. This scenario is covered by an additional check for available events in the fifo and setting the state to TASK_RUNNING in this case. In addition the changed version flushes the kfifo before ending when the kthread is stopped. With this patch we gain: - Get rid of the spinlock - Simplify code - Don't grep / release the mutex for each individual event but just once for the complete fifo content. This reduces overhead if a driver e.g. triggers processing after writing the content of a hw fifo to the kfifo. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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Sakari Ailus authored
The function has a local variable that points to the media device; use that instead of finding the media device under the entity. Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Sakari Ailus authored
The function has a local variable that points to the media device; use that instead of finding the media device under the entity. Signed-off-by:
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Sakari Ailus authored
The function has a local variable that points to the media device; use that instead of finding the media device under the entity. Signed-off-by:
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Sakari Ailus authored
Use dev_dbg() to tell about the progress of the graph traversal algorithm. This is intended to make debugging of the algorithm easier. Signed-off-by:
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Sakari Ailus authored
Instead of double quotes, use single quotes to quote entity names. Using single quotes is consistent with the English language and is also in line with the practices across the kernel. Signed-off-by:
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- 27 Jan, 2017 1 commit
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Sakari Ailus authored
With media_entity_graph_walk_next() getting more and more complicated (and especially so with has_routing() support added), split the function into two. Signed-off-by:
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