• Linus Torvalds's avatar
    Merge tag 'gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio · 3601fe43
    Linus Torvalds authored
    Pull GPIO updates from Linus Walleij:
     "This is the bulk of GPIO changes for the v5.1 cycle:
    
      Core changes:
    
       - The big change this time around is the irqchip handling in the
         qualcomm pin controllers, closely coupled with the gpiochip. This
         rework, in a classic fall-between-the-chairs fashion has been
         sidestepped for too long.
    
         The Qualcomm IRQchips using the SPMI and SSBI transport mechanisms
         have been rewritten to use hierarchical irqchip. This creates the
         base from which I intend to gradually pull support for hierarchical
         irqchips into the gpiolib irqchip helpers to cut down on duplicate
         code.
    
         We have too many hacks in the kernel because people have been
         working around the missing hierarchical irqchip for years, and once
         it was there, noone understood it for a while. We are now slowly
         adapting to using it.
    
         This is why this pull requests include changes to MFD, SPMI,
         IRQchip core and some ARM Device Trees pertaining to the Qualcomm
         chip family. Since Qualcomm have so many chips and such large
         deployments it is paramount that this platform gets this right, and
         now it (hopefully) does.
    
       - Core support for pull-up and pull-down configuration, also from the
         device tree. When a simple GPIO chip supports an "off or on" pull-up
         or pull-down resistor, we provide a way to set this up using
         machine descriptors or device tree.
    
         If more elaborate control of pull up/down (such as resistance shunt
         setting) is required, drivers should be phased over to use pin
         control. We do not yet provide a userspace ABI for this pull
         up-down setting but I suspect the makers are going to ask for it
         soon enough. PCA953x is the first user of this new API.
    
       - The GPIO mockup driver has been revamped after some discussion
         improving the IRQ simulator in the process.
    
         The idea is to make it possible to use the mockup for both testing
         and virtual prototyping, e.g. when you do not yet have a GPIO
         expander to play with but really want to get something to develop
         code around before hardware is available. It's neat. The blackbox
         testing usecase is currently making its way into kernelci.
    
       - ACPI GPIO core preserves non direction flags when updating flags.
    
       - A new device core helper for devm_platform_ioremap_resource() is
         funneled through the GPIO tree with Greg's ACK.
    
      New drivers:
    
       - TQ-Systems QTMX86 GPIO controllers (using port-mapped I/O)
    
       - Gateworks PLD GPIO driver (vaccumed up from OpenWrt)
    
       - AMD G-Series PCH (Platform Controller Hub) GPIO driver.
    
       - Fintek F81804 & F81966 subvariants.
    
       - PCA953x now supports NXP PCAL6416.
    
      Driver improvements:
    
       - IRQ support on the Nintendo Wii (Hollywood) GPIO.
    
       - get_direction() support for the MVEBU driver.
    
       - Set the right output level on SAMA5D2.
    
       - Drop the unused irq trigger setting on the Spreadtrum driver.
    
       - Wakeup support for PCA953x.
    
       - A slew of cleanups in the various Intel drivers"
    
    * tag 'gpio-v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (110 commits)
      gpio: gpio-omap: fix level interrupt idling
      gpio: amd-fch: Set proper output level for direction_output
      x86: apuv2: remove unused variable
      gpio: pca953x: Use PCA_LATCH_INT
      platform/x86: fix PCENGINES_APU2 Kconfig warning
      gpio: pca953x: Fix dereference of irq data in shutdown
      gpio: amd-fch: Fix type error found by sparse
      gpio: amd-fch: Drop const from resource
      gpio: mxc: add check to return defer probe if clock tree NOT ready
      gpio: ftgpio: Register per-instance irqchip
      gpio: ixp4xx: Add DT bindings
      x86: pcengines apuv2 gpio/leds/keys platform driver
      gpio: AMD G-Series PCH gpio driver
      drivers: depend on HAS_IOMEM for devm_platform_ioremap_resource()
      gpio: tqmx86: Set proper output level for direction_output
      gpio: sprd: Change to use SoC compatible string
      gpio: sprd: Use SoC compatible string instead of wildcard string
      gpio: of: Handle both enable-gpio{,s}
      gpio: of: Restrict enable-gpio quirk to regulator-gpio
      gpio: davinci: use devm_platform_ioremap_resource()
      ...
    3601fe43
vendor-prefixes.txt 13.3 KB