linux-toradex.git/Documentation/driver-model, branch v3.10.78

lib: devres: Introduce devm_ioremap_resource()

2013-01-22T17:41:43+00:00

The devm_request_and_ioremap() function is very useful and helps avoid a
whole lot of boilerplate. However, one issue that keeps popping up is
its lack of a specific error code to determine which of the steps that
it performs failed. Furthermore, while the function gives an example and
suggests what error code to return on failure, a wide variety of error
codes are used throughout the tree.

In an attempt to fix these problems, this patch adds a new function that
drivers can transition to. The devm_ioremap_resource() returns a pointer
to the remapped I/O memory on success or an ERR_PTR() encoded error code
on failure. Callers can check for failure using IS_ERR() and determine
its cause by extracting the error code using PTR_ERR().

devm_request_and_ioremap() is implemented as a wrapper around the new
API and return NULL on failure as before. This ensures that backwards
compatibility is maintained until all users have been converted to the
new API, at which point the old devm_request_and_ioremap() function
should be removed.

A semantic patch is included which can be used to convert from the old
devm_request_and_ioremap() API to the new devm_ioremap_resource() API.
Some non-trivial cases may require manual intervention, though.

Signed-off-by: Thierry Reding 
Cc: Arnd Bergmann 
Acked-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Documentation: devres: add PHY get/put functions to list of supported calls

2013-01-17T20:57:07+00:00

Signed-off-by: Marko Katic 
Signed-off-by: Greg Kroah-Hartman

pwm: add devm_pwm_get() and devm_pwm_put()

2012-09-10T15:05:45+00:00

Add resource managed variants of pwm_get() and pwm_put() for
convenience. Code is largely inspired by the equivalent devm functions
of the regulator framework.

Signed-off-by: Alexandre Courbot 
Signed-off-by: Thierry Reding

Merge tag 'pinctrl-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

2012-05-21T23:58:23+00:00

Pull pin control subsystem changes from Linus Walleij:

 - Generic Device Tree bindings and hooks for drivers so we can move
   over modern drivers to using this.

 - Device Tree bindings for Tegra SoCs.

 - Funneling some devicetree helper code for the drivers/of subsystem.

 - New pin control drivers for:
   * Freescale MXS
   * Freescale i.MX51
   * Freescale i.MX53
     All of these use Device Tree bindings.

 - Dummy pinctrl handles for stepwise migration to pinctrl, akin to
   dummy regulators.
 - Minor non-urgent fixes and improvments.

Fix up trivial conflicts in Documentation/driver-model/devres.txt and
drivers/pinctrl/core.c,

* tag 'pinctrl-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (46 commits)
  pinctrl: pinctrl-imx: add imx51 pinctrl driver
  pinctrl: pinctrl-imx: add imx53 pinctrl driver
  pinctrl: pinctrl-pxa3xx: remove empty pinmux disable function
  pinctrl: pinctrl-mxs: remove empty pinmux disable function
  pinctrl: pinctrl-imx: remove empty pinmux disable function
  pinctrl: make pinmux disable function optional
  pinctrl: a minor error checking improvement for pinconf
  pinctrl: mxs: skip gpio nodes for group creation
  pinctrl: mxs: create group for pin config node
  pinctrl: (cosmetic) fix two entries in DocBook comments
  pinctrl: add more info to error msgs in pin_request
  pinctrl: add pinctrl-mxs support
  pinctrl: pinctrl-imx: add imx6q pinctrl driver
  pinctrl: pinctrl-imx: add imx pinctrl core driver
  dt: add of_get_child_count helper function
  pinctrl: support gpio request deferred probing
  pinctrl: add pinctrl_provide_dummies interface for platforms to use
  pinctrl: enhance reporting of errors when loading from DT
  pinctrl: add kerneldoc for pinctrl_ops device tree functions
  pinctrl: propagate map validation errors
  ...

ARM: 7376/1: clkdev: Implement managed clk_get()

2012-04-19T18:34:18+00:00

Allow clk API users to simplify their cleanup paths by providing a
managed version of clk_get() and clk_put().

Signed-off-by: Mark Brown 
Signed-off-by: Russell King

pinctrl: implement devm_pinctrl_get()/put()

2012-04-18T11:53:13+00:00

These functions allow the driver core to automatically clean up any
allocations made by drivers, thus leading to simplified drivers.

Signed-off-by: Stephen Warren 
Signed-off-by: Linus Walleij

Merge remote-tracking branches 'regulator/topic/devm' and 'regulator/topic/stub' into regulator-next

2012-03-18T21:38:28+00:00

regulator: add devm_regulator_* to the list of managed interfaces

2012-01-31T11:18:56+00:00

Add devm_regulator_put() and devm_regulator_bulk_get() to the list of managed
interfaces.

Signed-off-by: Axel Lin 
Acked-by: Tejun Heo 
Signed-off-by: Mark Brown

Documentation: devres: add allocation functions to list of supported calls

2012-01-24T18:47:42+00:00

Signed-off-by: Wolfram Sang 
Acked-by: Grant Likely 
Acked-by: Tejun Heo 
Cc: Randy Dunlap 
Cc: Greg KH 
Signed-off-by: Greg Kroah-Hartman

regulator: Add devm_regulator_get()

2012-01-20T12:02:55+00:00

Add a resource managed regulator_get() to simplify regulator
usage in drivers. This allows driver authors to "get and forget"
about their regulators by automatically calling regulator_put()
when the driver is detached.

[Fixed up a couple of coding style issues -- broonie]

Signed-off-by: Stephen Boyd 
Signed-off-by: Mark Brown