linux/Documentation/driver-api
Linus Torvalds 24dc83635f This is the bulk of GPIO changes for the v4.21 kernel series:
Core changes:
 
 - Some core changes are already in outside of this pull
   request as they came through the regulator tree, most
   notably devm_gpiod_unhinge() that removes devres refcount
   management from a GPIO descriptor. This is needed in
   subsystems such as regulators where the regulator core
   need to take over the reference counting and lifecycle
   management for a GPIO descriptor.
 
 - We dropped devm_gpiochip_remove() and devm_gpio_chip_match()
   as nothing needs it. We can bring it back if need be.
 
 - Add a global TODO so people see where we are going. This
   helps setting the direction now that we are two GPIO
   maintainers.
 
 - Handle the MMC CD/WP properties in the device tree core.
   (The bulk of patches activating this code is already
   merged through the MMC/SD tree.)
 
 - Augment gpiochip_request_own_desc() to pass a flag so
   we as gpiochips can request lines as active low or open
   drain etc even from ourselves.
 
 New drivers:
 
 - New driver for Cadence GPIO blocks.
 
 - New driver for Atmel SAMA5D2 PIOBU GPIO lines.
 
 Driver improvements:
 
 - A major refactoring of the PCA953x driver - this driver has
   been around for ages, and is now modernized to reduce code
   duplication that has stacked up and is using regmap to read
   write and cache registers.
 
 - Intel drivers are now maintained in a separate tree and
   start with a round of cleanups and unifications.
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Merge tag 'gpio-v4.21-1' 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 v4.21 kernel series.

  Core changes:

   - Some core changes are already in outside of this pull request as
     they came through the regulator tree, most notably
     devm_gpiod_unhinge() that removes devres refcount management from a
     GPIO descriptor. This is needed in subsystems such as regulators
     where the regulator core need to take over the reference counting
     and lifecycle management for a GPIO descriptor.

   - We dropped devm_gpiochip_remove() and devm_gpio_chip_match() as
     nothing needs it. We can bring it back if need be.

   - Add a global TODO so people see where we are going. This helps
     setting the direction now that we are two GPIO maintainers.

   - Handle the MMC CD/WP properties in the device tree core. (The bulk
     of patches activating this code is already merged through the
     MMC/SD tree.)

   - Augment gpiochip_request_own_desc() to pass a flag so we as
     gpiochips can request lines as active low or open drain etc even
     from ourselves.

  New drivers:

   - New driver for Cadence GPIO blocks.

   - New driver for Atmel SAMA5D2 PIOBU GPIO lines.

  Driver improvements:

   - A major refactoring of the PCA953x driver - this driver has been
     around for ages, and is now modernized to reduce code duplication
     that has stacked up and is using regmap to read write and cache
     registers.

   - Intel drivers are now maintained in a separate tree and start with
     a round of cleanups and unifications"

* tag 'gpio-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (99 commits)
  gpio: sama5d2-piobu: Depend on OF_GPIO
  gpio: Add Cadence GPIO driver
  dt-bindings: gpio: Add bindings for Cadence GPIO
  gpiolib-acpi: remove unused variable 'err', cleans up build warning
  gpio: mxs: read pin level directly instead of using .get
  gpio: aspeed: remove duplicated statement
  gpio: add driver for SAMA5D2 PIOBU pins
  dt-bindings: arm: atmel: describe SECUMOD usage as a GPIO controller
  gpio/mmc/of: Respect polarity in the device tree
  dt-bindings: gpio: rcar: Add r8a774c0 (RZ/G2E) support
  memory: omap-gpmc: Get the header of the enum
  ARM: omap1: Fix new user of gpiochip_request_own_desc()
  gpio: pca953x: Add regmap dependency for PCA953x driver
  gpio: raspberrypi-exp: decrease refcount on firmware dt node
  gpiolib: Fix return value of gpio_to_desc() stub if !GPIOLIB
  gpio: pca953x: Restore registers after suspend/resume cycle
  gpio: pca953x: Zap single use of pca953x_read_single()
  gpio: pca953x: Zap ad-hoc reg_output cache
  gpio: pca953x: Zap ad-hoc reg_direction cache
  gpio: pca953x: Perform basic regmap conversion
  ...
2018-12-28 20:00:21 -08:00
..
80211 cfg80211: remove unused function ieee80211_data_from_8023() 2017-09-21 11:42:02 +02:00
dmaengine dmaengine: Fix spelling for parenthesis in dmatest documentation 2018-03-26 10:40:37 -06:00
firmware Documentation: update firmware loader fallback reference 2018-07-07 17:45:25 +02:00
fpga docs: fpga: document programming fpgas using regions 2018-10-16 11:13:50 +02:00
gpio gpio: Pass a flag to gpiochip_request_own_desc() 2018-12-14 14:24:33 +01:00
i3c docs: driver-api: Add I3C documentation 2018-11-12 10:33:49 +01:00
iio docs: driver-api: add iio hw consumer section 2018-01-10 10:30:06 +00:00
pci PCI/P2PDMA: Add P2P DMA driver writer's documentation 2018-10-17 12:18:18 -05:00
pm PM / core: Direct DPM_FLAG_LEAVE_SUSPENDED handling 2018-01-03 00:30:00 +01:00
soundwire Documentation: soundwire: fix stream.rst markup warnings 2018-09-17 09:12:36 -07:00
usb usb: typec: Bus type for alternate modes 2018-07-02 17:42:36 +02:00
basics.rst docs: Introduce deprecated APIs list 2018-10-18 12:22:43 -06:00
clk.rst This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
conf.py doc-rst: make driver-api folder buildable stand-alone 2016-10-26 17:25:00 -06:00
device_connection.rst Documentation: driver-api: fix device_connection.rst kernel-doc error 2018-04-27 17:17:34 -06:00
device_link.rst driver core: Add flag to autoremove device link on supplier unbind 2018-07-09 12:14:31 +02:00
device-io.rst docs: Convert the deviceio template to RST 2017-01-31 17:31:21 -07:00
dma-buf.rst dma-fence: Polish kernel-doc for dma-fence.c 2018-07-04 12:18:37 +02:00
edac.rst edac.rst: move concepts dictionary from edac.h 2016-12-15 08:58:12 -02:00
firewire.rst FireWire: add driver-api Introduction section 2018-09-06 09:41:16 -06:00
frame-buffer.rst
hsi.rst docs: split up serial-interfaces.rst 2016-09-06 09:14:52 -06:00
i2c.rst Merge branch 'i2c/for-4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2017-07-12 10:04:56 -07:00
index.rst docs: driver-api: Add I3C documentation 2018-11-12 10:33:49 +01:00
infrastructure.rst dma-mapping: move all DMA mapping code to kernel/dma 2018-06-14 08:50:37 +02:00
input.rst
libata.rst libata: remove ata_sff_data_xfer_noirq() 2018-07-11 10:45:28 -07:00
message-based.rst docs: Don't format internal MPT docs 2016-09-06 09:15:48 -06:00
misc_devices.rst docs-rst: core_api: move driver-specific stuff to drivers_api 2017-04-02 14:17:43 -06:00
miscellaneous.rst docs: driver-api: Remove trailing blank line 2017-08-07 14:27:45 -06:00
mtdnand.rst mtd: rawnand: Deprecate ->chip_delay 2018-10-03 11:12:25 +02:00
pinctl.rst pinctrl/gpio: Unify namespace for cross-calls 2017-09-22 11:02:10 +02:00
rapidio.rst docs-rst: convert rapidio book to ReST 2017-05-16 08:44:16 -03:00
regulator.rst docs: Convert the regulator docbook to RST 2017-01-31 17:31:41 -07:00
s390-drivers.rst s390/docs: reword airq section 2018-02-02 10:47:15 +01:00
scsi.rst scsi: target: add driver-api document 2018-04-20 19:14:40 -04:00
slimbus.rst slimbus: stream: add stream support 2018-07-07 17:25:23 +02:00
sound.rst
spi.rst docs: split up serial-interfaces.rst 2016-09-06 09:14:52 -06:00
target.rst scsi: target: add driver-api document 2018-04-20 19:14:40 -04:00
uio-howto.rst docs/uio: fix a grammar nitpick 2018-10-16 11:15:51 +02:00
vme.rst docs: Update VME documentation to include kerneldoc comments 2017-03-17 15:10:49 +09:00
w1.rst There has been a fair amount of activity in the docs tree this time 2017-07-03 21:13:25 -07:00