A few generic changes (patches 1-5) and then add a driver for the ImgTec
Infrared decoder block (patches 6-15). Two separate rc input devices are
exposed depending on kernel configuration. One uses the hardware decoder
which is set up with timings for a specific protocol and supports
mask/value filtering and wake events. The other uses raw edge interrupts
and the generic software protocol decoders to allow multiple protocols
to be supported, including those not supported by the hardware decoder.
The hardware decoder timing values, raw data to scan code conversion
function and scan code filter to raw data filter conversion function are
provided in separate files for each protocol which the main driver can
use. The new generic scan code filter interface is made use of to reduce
interrupts and control wake events.
Changes in v2:
Patchset:
- New generic patches 1, 3-5:
- Patch 1 adds sysfs documentation which is extended by patch 4.
- Patch 3 adds a raw decoder for the Sharp protocol.
- Patch 4 adds the scancode filtering sysfs interface generically (bit
of an RFC really).
- Patch 5 changes the scancode format for 32-bit NEC (bit of an RFC
really - can we get away with this?).
DT bindings:
- Future proof compatible string from "img,ir" to "img,ir1", where the 1
corresponds to the major revision number of the hardware (Tomasz
Figa).
- Added clock-names property and three specific clock names described in
the manual, only one of which is used by the current driver (Tomasz
Figa).
Misc:
- Use spin_lock_irq() instead of spin_lock_irqsave() in various bits of
code that aren't accessible from hard interrupt context.
- Add io.h include to img-ir.h.
Raw Decoder:
- Echo the last sample after 150ms if no edges have been detected. This
allows the soft decoder state machines to recognise the final space
when no repeat code is received.
- Avoid removal race by checking for RC device in ISR.
Hardware Decoder:
- Remove the dynamic registration and unregistration of protocol decoder
timings. It didn't really get us much and it complicated locking and
load ordering.
- Simplify locking of decoders, they're now only modified when
preprocessed, and all other use is after that, so preprocessing is the
only place locking is required.
- Use the new generic filtering interface rather than creating the sysfs
files in the driver. This rearranges the code a bit, so as to use an
array of 2 filters (normal and wake) rather than separate struct
members for each, and passes the array index around between functions
rather than the pointer to the filter.
- Extend the scancode() decoder callback to handle full 32bit scancodes.
Previously negative scancodes were treated specially, and indicated
repeat codes or invalid raw data, but 32bit NEC may result in a
scancode with the top bit set. Therefore change the scancode() return
value to simply indicate success/fail/repeat, and add an extra
scancode output pointer parameter that must have been written by the
callback if it returns IMG_IR_SCANCODE.
- Separate clock rate specific data in the decoder timings structure so
that it can be more easily shared between instantiations of the
driver. A new struct img_ir_reg_timings stores the calculated clock
rate specific register values for the timings. This allows us to make
more widespread use of const on decoder timings.
- Make tolerance of hardware decoder timings configurable per protocol
rather than being fixed at 10% for all protocols. This allows the
tolerance of the Sharp protocol timings in particular to be increased.
- Fix typo in img_ir_enable_wake (s/RC_FILTER_WAKUP/RC_FILTER_WAKEUP/).
- Fix change_protocol to accept a zero protocol mask (for when "none" is
written to /sys/class/rc/rcX/protocols).
- Stop the end_timer (for keyups after repeat code timeout) safely on
removal and protocol switch.
- Fix rc_map.rc_type initialisation to use __ffs64(proto_mask).
- Fix img_ir_allowed_protos() to return a protocol mask in a u64 rather
than an unsigned long.
- Use setup_timer() macro for the end timer rather than using
init_timer() and setting function pointer and data explicitly.
- Add a debug message for when the scancode() callback rejects the data.
- Minor cosmetic changes (variable naming e.g. s/ir_dev/rdev/ in
img_ir_set_protocol).
NEC decoder:
- Update scancode and filter callbacks to handle 32-bit NEC as used by
Apple and TiVo remotes (the new 32-bit NEC scancode format is used,
with the correct bit orientation).
- Make it possible to set the filter to extended NEC even when the high
bits of the scancode value aren't set, by taking the mask into account
too. My TV remote happens to use extended NEC with address 0x7f00,
which unfortunately maps to scancodes 0x007f** which looks like normal
NEC and couldn't previously be filtered.
Sharp decoder:
- Fix typo in logic 1 pulse width comment.
- Set tolerance to 20%, which seemed to be needed for the cases I have.
Cc: Mauro Carvalho Chehab <m.chehab@xxxxxxxxxxx>
Cc: Jarod Wilson <jarod@xxxxxxxxxx>
Cc: linux-media@xxxxxxxxxxxxxxx
Cc: Grant Likely <grant.likely@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: Rob Landley <rob@xxxxxxxxxxx>
Cc: linux-doc@xxxxxxxxxxxxxxx
Cc: Tomasz Figa <tomasz.figa@xxxxxxxxx>
James Hogan (15):
media: rc: document rc class sysfs API
media: rc: add Sharp infrared protocol
media: rc: add raw decoder for Sharp protocol
media: rc: add sysfs scancode filtering interface
media: rc: change 32bit NEC scancode format
dt: binding: add binding for ImgTec IR block
media: rc: img-ir: add base driver
media: rc: img-ir: add raw driver
media: rc: img-ir: add hardware decoder driver
media: rc: img-ir: add to build
media: rc: img-ir: add NEC decoder module
media: rc: img-ir: add JVC decoder module
media: rc: img-ir: add Sony decoder module
media: rc: img-ir: add Sharp decoder module
media: rc: img-ir: add Sanyo decoder module
Documentation/ABI/testing/sysfs-class-rc | 92 ++
.../devicetree/bindings/media/img-ir1.txt | 30 +
drivers/media/rc/Kconfig | 11 +
drivers/media/rc/Makefile | 2 +
drivers/media/rc/img-ir/Kconfig | 61 ++
drivers/media/rc/img-ir/Makefile | 11 +
drivers/media/rc/img-ir/img-ir-core.c | 176 ++++
drivers/media/rc/img-ir/img-ir-hw.c | 1040 ++++++++++++++++++++
drivers/media/rc/img-ir/img-ir-hw.h | 269 +++++
drivers/media/rc/img-ir/img-ir-jvc.c | 92 ++
drivers/media/rc/img-ir/img-ir-nec.c | 148 +++
drivers/media/rc/img-ir/img-ir-raw.c | 151 +++
drivers/media/rc/img-ir/img-ir-raw.h | 60 ++
drivers/media/rc/img-ir/img-ir-sanyo.c | 122 +++
drivers/media/rc/img-ir/img-ir-sharp.c | 99 ++
drivers/media/rc/img-ir/img-ir-sony.c | 145 +++
drivers/media/rc/img-ir/img-ir.h | 166 ++++
drivers/media/rc/ir-nec-decoder.c | 5 +-
drivers/media/rc/ir-sharp-decoder.c | 200 ++++
drivers/media/rc/keymaps/rc-tivo.c | 86 +-
drivers/media/rc/rc-core-priv.h | 6 +
drivers/media/rc/rc-main.c | 137 +++
include/media/rc-core.h | 29 +
include/media/rc-map.h | 4 +-
24 files changed, 3097 insertions(+), 45 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-class-rc
create mode 100644 Documentation/devicetree/bindings/media/img-ir1.txt
create mode 100644 drivers/media/rc/img-ir/Kconfig
create mode 100644 drivers/media/rc/img-ir/Makefile
create mode 100644 drivers/media/rc/img-ir/img-ir-core.c
create mode 100644 drivers/media/rc/img-ir/img-ir-hw.c
create mode 100644 drivers/media/rc/img-ir/img-ir-hw.h
create mode 100644 drivers/media/rc/img-ir/img-ir-jvc.c
create mode 100644 drivers/media/rc/img-ir/img-ir-nec.c
create mode 100644 drivers/media/rc/img-ir/img-ir-raw.c
create mode 100644 drivers/media/rc/img-ir/img-ir-raw.h
create mode 100644 drivers/media/rc/img-ir/img-ir-sanyo.c
create mode 100644 drivers/media/rc/img-ir/img-ir-sharp.c
create mode 100644 drivers/media/rc/img-ir/img-ir-sony.c
create mode 100644 drivers/media/rc/img-ir/img-ir.h
create mode 100644 drivers/media/rc/ir-sharp-decoder.c
--
1.8.3.2
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