linux/drivers/pinctrl
Linus Torvalds 114b5f8f7e This is the bulk of GPIO changes for the v4.20 series:
Core changes:
 
 - A patch series from Hans Verkuil to make it possible to
   enable/disable IRQs on a GPIO line at runtime and drive GPIO
   lines as output without having to put/get them from scratch.
   The irqchip callbacks have been improved so that they can
   use only the fastpatch callbacks to enable/disable irqs
   like any normal irqchip, especially the gpiod_lock_as_irq()
   has been improved to be callable in fastpath context.
   A bunch of rework had to be done to achieve this but it is
   a big win since I never liked to restrict this to slowpath.
   The only call requireing slowpath was try_module_get() and
   this is kept at the .request_resources() slowpath callback.
   In the GPIO CEC driver this is a big win sine a single
   line is used for both outgoing and incoming traffic, and
   this needs to use IRQs for incoming traffic while actively
   driving the line for outgoing traffic.
 
 - Janusz Krzysztofik improved the GPIO array API to pass a
   "cookie" (struct gpio_array) and a bitmap for setting or
   getting multiple GPIO lines at once. This improvement
   orginated in a specific need to speed up an OMAP1 driver and
   has led to a much better API and real performance gains
   when the state of the array can be used to bypass a lot
   of checks and code when we want things to go really fast.
   The previous code would minimize the number of calls
   down to the driver callbacks assuming the CPU speed was
   orders of magnitude faster than the I/O latency, but this
   assumption was wrong on several platforms: what we needed
   to do was to profile and improve the speed on the hot
   path of the array functions and this change is now
   completed.
 
 - Clean out the painful and hard to grasp BNF experiments
   from the device tree bindings. Future approaches are looking
   into using JSON schema for this purpose. (Rob Herring
   is floating a patch series.)
 
 New drivers:
 
 - The RCAR driver now supports r8a774a1 (RZ/G2M).
 
 - Synopsys GPIO via CREGs driver.
 
 Major improvements:
 
 - Modernization of the EP93xx driver to use irqdomain and
   other contemporary concepts.
 
 - The ingenic driver has been merged into the Ingenic pin
   control driver and removed from the GPIO subsystem.
 
 - Debounce support in the ftgpio010 driver.
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Merge tag 'gpio-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO updates from Linus Walleij:
 "This is the bulk of GPIO changes for the v4.20 series:

  Core changes:

   - A patch series from Hans Verkuil to make it possible to
     enable/disable IRQs on a GPIO line at runtime and drive GPIO lines
     as output without having to put/get them from scratch.

     The irqchip callbacks have been improved so that they can use only
     the fastpatch callbacks to enable/disable irqs like any normal
     irqchip, especially the gpiod_lock_as_irq() has been improved to be
     callable in fastpath context.

     A bunch of rework had to be done to achieve this but it is a big
     win since I never liked to restrict this to slowpath. The only call
     requireing slowpath was try_module_get() and this is kept at the
     .request_resources() slowpath callback. In the GPIO CEC driver this
     is a big win sine a single line is used for both outgoing and
     incoming traffic, and this needs to use IRQs for incoming traffic
     while actively driving the line for outgoing traffic.

   - Janusz Krzysztofik improved the GPIO array API to pass a "cookie"
     (struct gpio_array) and a bitmap for setting or getting multiple
     GPIO lines at once.

     This improvement orginated in a specific need to speed up an OMAP1
     driver and has led to a much better API and real performance gains
     when the state of the array can be used to bypass a lot of checks
     and code when we want things to go really fast.

     The previous code would minimize the number of calls down to the
     driver callbacks assuming the CPU speed was orders of magnitude
     faster than the I/O latency, but this assumption was wrong on
     several platforms: what we needed to do was to profile and improve
     the speed on the hot path of the array functions and this change is
     now completed.

   - Clean out the painful and hard to grasp BNF experiments from the
     device tree bindings. Future approaches are looking into using JSON
     schema for this purpose. (Rob Herring is floating a patch series.)

  New drivers:

   - The RCAR driver now supports r8a774a1 (RZ/G2M).

   - Synopsys GPIO via CREGs driver.

  Major improvements:

   - Modernization of the EP93xx driver to use irqdomain and other
     contemporary concepts.

   - The ingenic driver has been merged into the Ingenic pin control
     driver and removed from the GPIO subsystem.

   - Debounce support in the ftgpio010 driver"

* tag 'gpio-v4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (116 commits)
  gpio: Clarify kerneldoc on gpiochip_set_chained_irqchip()
  gpio: Remove unused 'irqchip' argument to gpiochip_set_cascaded_irqchip()
  gpio: Drop parent irq assignment during cascade setup
  mmc: pwrseq_simple: Fix incorrect handling of GPIO bitmap
  gpio: fix SNPS_CREG kconfig dependency warning
  gpiolib: Initialize gdev field before is used
  gpio: fix kernel-doc after devres.c file rename
  gpio: fix doc string for devm_gpiochip_add_data() to not talk about irq_chip
  gpio: syscon: Fix possible NULL ptr usage
  gpiolib: Show correct direction from the beginning
  pinctrl: msm: Use init_valid_mask exported function
  gpiolib: Add init_valid_mask exported function
  GPIO: add single-register GPIO via CREG driver
  dt-bindings: Document the Synopsys GPIO via CREG bindings
  gpio: mockup: use device properties instead of platform_data
  gpio: Slightly more helpful debugfs
  gpio: omap: Remove set but not used variable 'dev'
  gpio: omap: drop omap_gpio_list
  Accept partial 'gpio-line-names' property.
  gpio: omap: get rid of the conditional PM runtime calls
  ...
2018-10-23 08:45:05 +01:00
..
actions This is the bulk of pin control changes for v4.19: 2018-08-14 12:31:27 -07:00
aspeed pinctrl: remove unnecessary unlikely() 2018-08-31 11:29:12 +02:00
bcm pinctrl: bcm: ns: Use uintptr_t for casting data 2018-10-12 11:14:59 +02:00
berlin pinctrl: Convert to using %pOFn instead of device_node.name 2018-08-29 14:05:36 +02:00
cirrus pinctrl: madera: Fix uninitialized variable bug in madera_mux_set_mux 2018-10-12 11:14:38 +02:00
freescale pinctrl: mxs: do not export mxs_pinctrl_probe 2018-09-20 15:45:14 -07:00
intel pinctrl: geminilake: Sort register offsets by value 2018-10-16 09:18:15 +02:00
mediatek pinctrl: mediatek: Make eint_m u16 2018-10-15 16:17:01 +02:00
meson pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
mvebu pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
nomadik pinctrl: nomadik: Fix debugfs 2018-10-03 09:10:52 +02:00
nuvoton pinctrl: nuvoton: add NPCM7xx pinctrl and GPIO driver 2018-08-29 10:28:42 +02:00
pxa pinctrl: pxa: pxa2xx: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE 2017-11-30 14:42:04 +01:00
qcom This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
samsung pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
sh-pfc pinctrl: sh-pfc: r8a77990: Add INTC-EX pins, groups and function 2018-10-02 12:16:47 +02:00
sirf pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
spear pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
sprd pinctrl: sprd: Move DT parsing before registering pinctrl device 2018-09-28 09:34:19 +02:00
stm32 pinctrl: Convert to using %pOFn instead of device_node.name 2018-08-29 14:05:36 +02:00
sunxi pinctrl: sunxi: Fix a memory leak in 'sunxi_pinctrl_build_state()' 2018-10-16 10:03:48 +02:00
tegra pinctrl: tegra: do not export tegra_pinctrl_probe 2018-09-20 08:15:16 -07:00
ti pinctrl: Convert to using %pOFn instead of device_node.name 2018-08-29 14:05:36 +02:00
uniphier pinctrl: uniphier: include <linux/bits.h> instead of <linux/bitops.h> 2018-10-16 10:01:59 +02:00
vt8500 pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
zte treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
core.c pinctrl: core: make sure strcmp() doesn't get a null parameter 2018-10-01 13:46:13 +02:00
core.h pinctrl: core: Remove broken remove_last group and pinmux functions 2018-07-17 10:49:49 +02:00
devicetree.c pinctrl: Support stopping deferred probe after initcalls 2018-07-10 17:22:35 +02:00
devicetree.h
Kconfig pinctrl: sh-pfc: Updates for v4.20 (take three) 2018-10-10 11:15:33 +02:00
Makefile pinctrl: sh-pfc: Updates for v4.20 (take three) 2018-10-10 11:15:33 +02:00
pinconf-generic.c pinctrl: Add skew-delay pin config and bindings 2017-11-08 13:49:45 +01:00
pinconf.c pinctrl: check ops->pin_config_set in pinconf_set_config() 2017-08-14 15:01:59 +02:00
pinconf.h pinctrl: move const qualifier before struct 2017-08-14 15:01:02 +02:00
pinctrl-amd.c This is the 4.19-rc6 release 2018-10-01 13:20:45 +02:00
pinctrl-amd.h pinctrl/amd: fix gpio irq level in debugfs 2018-07-29 22:20:15 +02:00
pinctrl-artpec6.c pinctrl: artpec-6: Add smaller groups for uarts 2018-03-01 17:04:09 +01:00
pinctrl-as3722.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-at91-pio4.c pinctrl: at91-pio4: Get rid of legacy call 2018-09-14 12:49:19 +02:00
pinctrl-at91.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-at91.h
pinctrl-axp209.c pinctrl: axp209: Fix NULL pointer dereference after allocation 2018-08-10 23:12:43 +02:00
pinctrl-coh901.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-coh901.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pinctrl-da850-pupd.c
pinctrl-digicolor.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-falcon.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-gemini.c pinctrl: gemini: Fix up TVC clock group 2018-10-10 21:05:35 +02:00
pinctrl-ingenic.c This is the 4.19-rc6 release 2018-10-01 13:20:45 +02:00
pinctrl-lantiq.c pinctrl: Convert to using %pOFn instead of device_node.name 2018-08-29 14:05:36 +02:00
pinctrl-lantiq.h
pinctrl-lpc18xx.c pinctrl: lpc18xx: mark expected switch fall-throughs 2018-08-29 13:47:16 +02:00
pinctrl-max77620.c pinctrl: max77620: Use common error handling code in max77620_pinconf_set() 2017-11-08 13:49:57 +01:00
pinctrl-mcp23s08.c This is the bulk of pin control changes for the v4.20 series: 2018-10-23 08:40:16 +01:00
pinctrl-ocelot.c pinctrl: ocelot: add support for interrupt controller 2018-08-06 13:00:17 +02:00
pinctrl-oxnas.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-palmas.c pinctrl: palmas: Delete an error message for a failed memory allocation in palmas_pinctrl_probe() 2018-01-03 08:46:49 +01:00
pinctrl-pic32.c gpio: Move irqdomain into struct gpio_irq_chip 2017-11-08 14:06:21 +01:00
pinctrl-pic32.h
pinctrl-pistachio.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-rk805.c pinctrl: Add pinctrl driver for the RK805 PMIC 2017-08-21 08:54:46 +01:00
pinctrl-rockchip.c pinctrl: Include <linux/gpio/driver.h> nothing else 2018-09-14 15:10:57 +02:00
pinctrl-rza1.c pinctrl: rza1: don't manually release devm managed resources 2018-10-10 11:56:21 +02:00
pinctrl-rzn1.c pinctrl: renesas: Fix platform_no_drv_owner.cocci warnings 2018-10-15 16:19:44 +02:00
pinctrl-single.c pinctrl: Convert to using %pOFn instead of device_node.name 2018-08-29 14:05:36 +02:00
pinctrl-st.c pinctrl: Convert to using %pOFn instead of device_node.name 2018-08-29 14:05:36 +02:00
pinctrl-sx150x.c pinctrl: sx150x: Add a static gpio/pinctrl pin range mapping 2018-01-18 11:04:47 +01:00
pinctrl-tb10x.c pinctrl: tb10x: constify pinconf_ops, pinctrl_ops, and pinmux_ops structures 2017-08-22 14:41:40 +02:00
pinctrl-u300.c headers: separate linux/mod_devicetable.h from linux/platform_device.h 2018-07-07 17:52:26 +02:00
pinctrl-utils.c pinctrl: utils: Delete an error message for a failed memory allocation in pinctrl_utils_add_map_configs() 2018-01-03 08:46:53 +01:00
pinctrl-utils.h
pinctrl-xway.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00
pinctrl-zynq.c pinctrl: zynq: Fix warnings in the driver 2017-08-14 15:01:01 +02:00
pinmux.c pinctrl: pinmux: Return selector to the pinctrl driver 2018-07-17 10:48:47 +02:00
pinmux.h pinctrl: core: Remove broken remove_last group and pinmux functions 2018-07-17 10:49:49 +02:00