Add a driver for the ImgTec Infrared decoder block. 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. This patchset depends on the "rc: scancode filtering improvements" patchset. Changes in v4: Patchset: - Rebase on RC filtering improvements patchset, and fix to use new allowed/enabled protocol abstractions. - Drop first 5 patches for generic scancode filtering, which have already been applied. Hardware Decoder: - Depend on generic code to update normal filter on a protocol change. - Minimal support for wakeup_protocols by setting allowed and enabled wakeup protocols to match the enabled normal protocol on a protocol change (but only if the protocol has filtering support in the driver). Supporting a different wakeup protocol to the normal protocol is left as a task for another day. Changes in v3: DT bindings: - Rename compatible string to "img,ir-rev1" (Rob Herring). - Specify ordering of clocks explicitly (Rob Herring). Changes in v2: 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 (10): dt: binding: add binding for ImgTec IR block rc: img-ir: add base driver rc: img-ir: add raw driver rc: img-ir: add hardware decoder driver rc: img-ir: add to build rc: img-ir: add NEC decoder module rc: img-ir: add JVC decoder module rc: img-ir: add Sony decoder module rc: img-ir: add Sharp decoder module rc: img-ir: add Sanyo decoder module .../devicetree/bindings/media/img-ir-rev1.txt | 34 + drivers/media/rc/Kconfig | 2 + drivers/media/rc/Makefile | 1 + 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 | 1053 ++++++++++++++++++++ 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 +++ 16 files changed, 2590 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/img-ir-rev1.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 -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
