linux-toradex.git/drivers/pinctrl/pinctrl-imx.c, branch v3.12-rc2

pinctrl: Pass all configs to driver on pin_config_set()

2013-08-28T11:34:41+00:00

When setting pin configuration in the pinctrl framework, pin_config_set() or
pin_config_group_set() is called in a loop to set one configuration at a time
for the specified pin or group.

This patch 1) removes the loop and 2) changes the API to pass the whole pin
config array to the driver.  It is now up to the driver to loop through the
configs.  This allows the driver to potentially combine configs and reduce the
number of writes to pin config registers.

All c files changed have been build-tested to verify the change compiles and
that the corresponding .o is successfully generated.

Signed-off-by: Sherman Yin 
Reviewed-by: Christian Daudt 
Reviewed-by: Matt Porter 
Tested-by: Stephen Warren 
Acked-by: Laurent Pinchart 
Signed-off-by: Linus Walleij

pinctrl: imx: Fix compilation with DEBUG enabled

2013-08-23T18:52:46+00:00

This became broken with converting the pinmux arrays into struct
types. While at it replace the preprocessor magic with a simple
dev_dbg.

Reported-by: Tushar Behera 
Signed-off-by: Sascha Hauer 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: Use struct type for pins

2013-08-16T12:43:56+00:00

The i.MX pinctrl driver uses 5 different arrays for storing the
informations for pins. This requires five allocations. Instead,
use a struct type which is more cache friendly, readable and
requires less allocations. One array of integers is still needed
since the pinctrl framework forces us to maintain it.
This also adds checks whether the allocations are succesful which
were missing.

Signed-off-by: Sascha Hauer 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: do not fail when parsing a function fails

2013-08-15T20:13:21+00:00

When parsing a function fails this is no reason to make the whole
driver fail. Just continue with the next function.

Signed-off-by: Sascha Hauer 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: do not fail when parsing a group fails

2013-08-15T20:13:17+00:00

The i.MX pinctrl driver completely bails out when it detects an error
in the pinctrl nodes. This usually means that whatever error a
devicetree has the user is left blind because even the console cannot
be initialized without working pinmux.

Instead of bailing out completely, just continue probing. This makes
the pinctrl driver work, only the erroneous groups will fail later
during pin request time.

Signed-off-by: Sascha Hauer 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: Catch no fsl,pins property

2013-08-15T20:13:11+00:00

Instead of crashing the kernel print an error message when
the fsl,pins property is missing.

Signed-off-by: Sascha Hauer 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: make error messages more informative

2013-08-15T20:12:59+00:00

When printing error messages about errors in the devicetree also print
the offending node to give the use a hint what might be wrong.

Signed-off-by: Sascha Hauer 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: work around select input quirk

2013-08-07T20:29:48+00:00

The select input for some pin may not be implemented using the regular
select input register but the general purpose register.  A real example
is that imx6q designers found the select input for USB OTG ID pin is
missing at the very late stage, and can not add a new select input
register but have to use a general purpose register bit to implement it.

The patch adds a workaround for such select input quirk by interpreting
the input_val cell of pin function ID in a different way, so that all
the info that needed for setting up select input bits in general purpose
register could be decoded from there.

Signed-off-by: Shawn Guo 
Tested-by: Peter Chen 
Signed-off-by: Linus Walleij

pinctrl: pinctrl-imx: Remove unneeded check for platform_get_resource()

2013-07-22T23:23:28+00:00

As devm_ioremap_resource() is used on probe, there is no need to explicitly
check the return value from platform_get_resource(), as this is something that
devm_ioremap_resource() takes care by itself.

Signed-off-by: Fabio Estevam 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij

pinctrl: imx: add VF610 support to imx pinctrl framework

2013-06-16T09:56:51+00:00

On some platforms such as VF610, offset of mux and pad ctrl register
may be zero, and the mux_mode and config_val are in one 32-bit register.
This patch adds support to imx core pinctrl framework to handle these
cases.

Signed-off-by: Jingchang Lu 
Acked-by: Shawn Guo 
Signed-off-by: Linus Walleij