• Greg Kroah-Hartman's avatar
    Merge tag 'iio-for-4.5a' of... · f3cf3fb7
    Greg Kroah-Hartman authored
    Merge tag 'iio-for-4.5a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
    
    Jonathan writes:
    
    First set of new device support, features and cleanups for IIO in the 4.5 cycle
    
    Usual mixed bag, but the big item perhaps in this series is the DMA buffer
    support added by Lars-Peter Clausen. It's been in the works for a long time
    and it will be interesting to see what hardware support shows up now that
    this is available.
    
    New core features + associate cleanup.
    * Add generic DMA buffer infrastructure
    * Add a DMAengine framework based buffer
     Also associated minor changes.
       - Set the device buffer watermark based on the minimum watermark for all
         attached buffers rather than just the 'primary' one.
       - iio_buffer_init - only set the watermark default if one hasn't already
         been provided.  This allows simple support for devices with a fixed
         watermark.
       - read only attribute for watermark on fixed watermark devices.
       - add explicit buffer enable/disable callbacks to allow the buffer to
         do more than trivial actions when it is being turned on and off.
    * IIO_VAL_INT support in write_raw_get_fmt function.
    
    New device support
    * Freescale MMA7455/7456L accelerometers
    * Memsic MXC6255XC accelerometer
    * ST lis2dh12 accelerometer
    * TI ADS8688 ADC
    * TI Palamas (twl6035/7) gpadc
    
    New driver features
    * mma8452
      - support either of the available interrupt pins to cope with the case
        where board layout has lead to a particular one being connected.
    
    Staging graduation
    * Dummy driver
      - this driver acts as both an example and a test device for those with
        out hardware to develop userspace code against.
    
    Cleanups and minor bits and bobs.
    * treewide
      - Sort out the ordering of iio_device_register/unregister vs runtime
        pm function calls so that it's all nice and consistent and not race
        prone.
      - Check sscanf return values.  None of the cases will actually happen as
        the strings are supplied internally, but best to be consistent on this.
    * ad7780
      - switch over to the gpio descriptor interface and remove the now unused
        platform data which gets rid of a header entirely.
    * ad7793
      - drop a pointless else statement.
    * at91_adc
      - Swap kmalloc_array in for a kmalloc doing the same job.
    * dummy
      - get rid of some commented out lines that snuck in during the move of
        the driver.
    * lm3533-als
      - Print an error message on provision of an invalid resistance.
    * mcp320x
      - Add compatible strings with vendor prefix and deprecate those with
        no vendor prefix.
    * mxs-lradc
      - Use BIT macro in various places rather than shifted ones.
    * pa12203001
      - Power off the chip if the registration fails.
    * pulsedlight-lidar-lite
      - add runtime PM support.
    * xilinx XADC
      - constify an iio_buffer_setup_ops structure.
    f3cf3fb7
iio_simple_dummy.c 18.7 KB