linux-toradex.git/drivers/pinctrl/pinctrl-single.c, branch v3.11

pinctrl: pinctrl-single: fix compile warning when no CONFIG_PM

2013-07-22T21:00:55+00:00

This warning has been introduced by the commit
 0f9bc4bcdf4f pinctrl: single: adopt pinctrl sleep mode management

Signed-off-by: Jean-Francois Moine 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: single: adopt pinctrl sleep mode management

2013-06-17T16:18:34+00:00

Make pinctrl-single able to handle suspend/resume events and change
hogged pins states accordingly.

Signed-off-by: Hebbar Gururaja 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: pinctrl-single: pin names for pinctrl-single.bits

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

Take care to name pin names as
register-offset.bit-pos-of-pin-in-register in case configuring multiple
pins in register.

Signed-off-by: Manjunathappa, Prakash 
Acked-by: Haojian Zhuang 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: pinctrl-single: enhance to configure multiple pins of different modules

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

Add support to configure multiple pins in each register, existing
implementation added by [1] does not support full fledge multiple pin
configuration in single register, reports a pin clash when different
modules configure different bits of same register. The issue reported
and discussed here
http://www.spinics.net/lists/arm-kernel/msg235213.html

With pinctrl-single,bits-per-mux property specified, use function-mask
property to find out number pins to configure. Allocate and register
pin control functions based sub mask.

Tested on da850/omap-l138 EVM.
does not support variable submask for pins.
does not support pinconf.

[1] "pinctrl: pinctrl-single: Add pinctrl-single,bits type of mux"
(9e605cb68a21d5704839a192a46ebcf387773704),

Signed-off-by: Manjunathappa, Prakash 
Reported-by: Lad, Prabhakar 
Tested-by: Lad, Prabhakar 
Acked-by: Haojian Zhuang 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: single: fix error return code in pcs_parse_one_pinctrl_entry()

2013-05-14T12:04:14+00:00

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Introduced by commit 9dddb4df90d136429b6d6ddefceb49a9b93f6cd1
(pinctrl: single: support generic pinconf)

Signed-off-by: Wei Yongjun 
Acked-by: Haojian Zhuang 
Signed-off-by: Linus Walleij

pinctrl: single: correct argument for pinconf

2013-03-13T18:50:19+00:00

pcs_pinconf_set() is always using "arg << shift" to configure two
parameters case. But pcs_add_conf2() didn't remove shift for config
argument. So correct it.

Signed-off-by: Haojian Zhuang 
Signed-off-by: Linus Walleij

pinctrl: single: Fix build error

2013-03-07T04:27:31+00:00

If pcs->is_pinconf is false, it means does not support pinconf.
If pcs->is_pinconf is true, is_generic flag is always true.

This patch fixes below build error:

  CC [M]  drivers/pinctrl/pinctrl-single.o
drivers/pinctrl/pinctrl-single.c: In function 'pcs_probe':
drivers/pinctrl/pinctrl-single.c:1441:3: error: assignment of member 'is_generic' in read-only object
make[2]: *** [drivers/pinctrl/pinctrl-single.o] Error 1
make[1]: *** [drivers/pinctrl] Error 2
make: *** [drivers] Error 2

Signed-off-by: Axel Lin 
Reviewed-by: Haojian Zhuang 
Signed-off-by: Linus Walleij

pinctrl: single: support generic pinconf

2013-03-07T04:27:31+00:00

Support the operation of generic pinconf. The supported config arguments
are INPUT_SCHMITT, INPUT_SCHMITT_ENABLE, DRIVE_STRENGHT, BIAS_DISABLE,
BIAS_PULLUP, BIAS_PULLDOWN, SLEW_RATE.

Signed-off-by: Haojian Zhuang 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: single: set function mask as optional

2013-03-07T04:27:31+00:00

Since Hisilicon's pin controller is divided into two parts. One is the
function mux, and the other is pin configuration. These two parts are
in the different memory regions. So make pinctrl-single,function-mask
as optional property. Then we can define pingroups without valid
function mux that is only used for pin configuration.

Signed-off-by: Haojian Zhuang 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij

pinctrl: single: create new gpio function range

2013-03-07T04:27:30+00:00

Since gpio driver could create gpio range in DTS, it could invoke
pinctrl_request_gpio(). In the pinctrl-single driver, it needs to
configure pins with gpio function mode.

A new gpio function range should be created in DTS file in below.

pinctrl-single,gpio-range = ;

range: gpio-range {
	#pinctrl-single,gpio-range-cells = <3>;
};

The gpio-ranges property is used in gpio driver and the
pinctrl-single,gpio-range property is used in pinctrl-single driver.

1. gpio-ranges is used for gpio driver in below.
   gpio-ranges = 
	gpio-ranges = < &pmx0 0 89 1 &pmx0 1 89 1 &pmx0 2 90 1
			&pmx0 3 90 1 &pmx0 4 91 1 &pmx0 5 92 1>;

2. gpio driver could get pin offset from gpio-ranges property.
   pinctrl-single driver could get gpio function mode from gpio_func
   that is stored in @gpiofuncs list in struct pcs_device.
   This new pinctrl-single,gpio-range is used as complement for
   gpio-ranges property in gpio driver.

Signed-off-by: Haojian Zhuang 
Acked-by: Tony Lindgren 
Signed-off-by: Linus Walleij