linux-toradex.git/include/linux/pinctrl/consumer.h, branch v4.13-rc4

pinctrl: Allow configuration of pins from gpiolib based drivers

2017-01-26T14:23:01+00:00

When a GPIO driver is backed by a pinctrl driver the GPIO driver
sometimes needs to call the pinctrl driver to configure certain things,
like whether the pin is used as input or output. In addition to this
there are other configurations applicable to GPIOs such as setting
debounce time of the GPIO.

To support this we introduce a new function pinctrl_gpio_set_config()
that can be used by gpiolib based driver to pass configuration requests
to the backing pinctrl driver.

Signed-off-by: Mika Westerberg 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Linus Walleij

pinctrl: use ERR_CAST instead of ERR_PTR/PTR_ERR

2015-05-06T13:34:51+00:00

Inspired by scripts/coccinelle/api/err_cast.cocci

Signed-off-by: Fabian Frederick 
Signed-off-by: Linus Walleij

Revert "pinctrl: consumer: use correct retval for placeholder functions"

2015-03-05T09:08:14+00:00

This reverts commit 5a7d2efdd93f6c4bb6cd3d5df3d2f5611c9b87ac.

As per discussion on the mailing list, this is not the right
thing to do. NULL cookies are valid in the stubs.

Reported-by: Wolfram Sang 
Signed-off-by: Linus Walleij

pinctrl: consumer: use correct retval for placeholder functions

2015-01-14T13:21:51+00:00

These functions are supposed to return an error pointer, not NULL.

Signed-off-by: Wolfram Sang 
Signed-off-by: Linus Walleij

pinctrl: rip out the direct pinconf API

2013-06-25T10:54:56+00:00

From the inception ot the pin config API there has been the
possibility to get a handle at a pin directly and configure
its electrical characteristics. For this reason we had:

int pin_config_get(const char *dev_name, const char *name,
               unsigned long *config);
int pin_config_set(const char *dev_name, const char *name,
               unsigned long config);
int pin_config_group_get(const char *dev_name,
               const char *pin_group,
               unsigned long *config);
int pin_config_group_set(const char *dev_name,
               const char *pin_group,
               unsigned long config);

After the introduction of the pin control states that will
control pins associated with devices, and its subsequent
introduction to the device core, as well as the
introduction of pin control hogs that can set up states on
boot and optionally also at sleep, this direct pin control
API is a thing of the past.

As could be expected, it has zero in-kernel users.
Let's delete this API and make our world simpler.

Reported-by: Tony Lindgren 
Reviewed-by: Stephen Warren 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: move the pm state stubs

2013-06-17T16:18:28+00:00

The stubs for the !PINCTRL case were placed in the wrong
part of the file, causing breakage in linux-next when compiling
SH without pinctrl. Fix it up by moving the stubs to the right
place.

Signed-off-by: Linus Walleij

drivers: pinctrl sleep and idle states in the core

2013-06-16T09:56:52+00:00

If a device have sleep and idle states in addition to the
default state, look up these in the core and stash them in
the pinctrl state container.

Add accessor functions for pinctrl consumers to put the pins
into "default", "sleep" and "idle" states passing nothing but
the struct device * affected.

Solution suggested by Kevin Hilman, Mark Brown and Dmitry
Torokhov in response to a patch series from Hebbar
Gururaja.

Cc: Hebbar Gururaja 
Cc: Dmitry Torokhov 
Cc: Stephen Warren 
Acked-by: Wolfram Sang 
Acked-by: Greg Kroah-Hartman 
Reviewed-by: Mark Brown 
Reviewed-by: Kevin Hilman 
Signed-off-by: Linus Walleij

Merge tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers

2012-10-03T20:45:43+00:00

Pull preparatory patches for user API disintegration from David Howells:
 "The patches herein prepare for the extraction of the Userspace API
  bits from the various header files named in the Kbuild files.

  New subdirectories are created under either include/uapi/ or
  arch/x/include/uapi/ that correspond to the subdirectory containing
  that file under include/ or arch/x/include/.

  The new subdirs under the uapi/ directory are populated with Kbuild
  files that mostly do nothing at this time.  Further patches will
  disintegrate the headers in each original directory and fill in the
  Kbuild files as they do it.

  These patches also:

   (1) fix up #inclusions of "foo.h" rather than .

   (2) Remove some redundant #includes from the DRM code.

   (3) Make the kernel build infrastructure handle Kbuild files both in
       the old places and the new UAPI place that both specify headers
       to be exported.

   (4) Fix some kernel tools that #include kernel headers during their
       build.

  I have compile tested this with allyesconfig against x86_64,
  allmodconfig against i386 and a scattering of additional defconfigs of
  other arches.  Prepared for main script

  Signed-off-by: David Howells 
  Acked-by: Arnd Bergmann 
  Acked-by: Thomas Gleixner 
  Acked-by: Michael Kerrisk 
  Acked-by: Paul E. McKenney 
  Acked-by: Dave Jones 
  Acked-by: H. Peter Anvin "

* tag 'uapi-prep-20121002' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: Plumb the UAPI Kbuilds into the user header installation and checking
  UAPI: x86: Differentiate the generated UAPI and internal headers
  UAPI: Remove the objhdr-y export list
  UAPI: Move linux/version.h
  UAPI: Set up uapi/asm/Kbuild.asm
  UAPI: x86: Fix insn_sanity build failure after UAPI split
  UAPI: x86: Fix the test_get_len tool
  UAPI: (Scripted) Set up UAPI Kbuild files
  UAPI: Partition the header include path sets and add uapi/ header directories
  UAPI: (Scripted) Convert #include "..." to #include  in kernel system headers
  UAPI: (Scripted) Convert #include "..." to #include  in drivers/gpu/
  UAPI: (Scripted) Remove redundant DRM UAPI header #inclusions from drivers/gpu/.
  UAPI: Refer to the DRM UAPI headers with <...> and from certain headers only

UAPI: (Scripted) Convert #include "..." to #include in kernel system headers

2012-10-02T17:01:25+00:00

Convert #include "..." to #include  in kernel system headers.

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones

pinctrl: use ERR_CAST instead of ERR_PTR(PTR_ERR(...))

2012-09-03T11:21:37+00:00

This doesn't change semantics, just looks nicer.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Linus Walleij