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Kirill Smelkov
linux
Commits
c6e40f96
Commit
c6e40f96
authored
Dec 07, 2017
by
Linus Walleij
Browse files
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Plain Diff
Merge branch 'ib-move-axp209' of /home/linus/linux-gpio into devel
parents
33b6cb58
e1190083
Changes
7
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7 changed files
with
534 additions
and
197 deletions
+534
-197
Documentation/devicetree/bindings/gpio/gpio-axp209.txt
Documentation/devicetree/bindings/gpio/gpio-axp209.txt
+47
-2
drivers/gpio/Kconfig
drivers/gpio/Kconfig
+0
-6
drivers/gpio/Makefile
drivers/gpio/Makefile
+0
-1
drivers/gpio/gpio-axp209.c
drivers/gpio/gpio-axp209.c
+0
-188
drivers/pinctrl/Kconfig
drivers/pinctrl/Kconfig
+10
-0
drivers/pinctrl/Makefile
drivers/pinctrl/Makefile
+1
-0
drivers/pinctrl/pinctrl-axp209.c
drivers/pinctrl/pinctrl-axp209.c
+476
-0
No files found.
Documentation/devicetree/bindings/gpio/gpio-axp209.txt
View file @
c6e40f96
AXP209 GPIO controller
AXP209 GPIO
& pinctrl
controller
This driver follows the usual GPIO bindings found in
Documentation/devicetree/bindings/gpio/gpio.txt
This driver follows the usual pinctrl bindings found in
Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
This driver employs the per-pin muxing pattern.
Required properties:
- compatible: Should be "x-powers,axp209-gpio"
- compatible: Should be one of:
- "x-powers,axp209-gpio"
- "x-powers,axp813-gpio"
- #gpio-cells: Should be two. The first cell is the pin number and the
second is the GPIO flags.
- gpio-controller: Marks the device node as a GPIO controller.
...
...
@@ -28,3 +35,41 @@ axp209: pmic@34 {
#gpio-cells = <2>;
};
};
The GPIOs can be muxed to other functions and therefore, must be a subnode of
axp_gpio.
Example:
&axp_gpio {
gpio0_adc: gpio0-adc {
pins = "GPIO0";
function = "adc";
};
};
&example_node {
pinctrl-names = "default";
pinctrl-0 = <&gpio0_adc>;
};
GPIOs and their functions
-------------------------
Each GPIO is independent from the other (i.e. GPIO0 in gpio_in function does
not force GPIO1 and GPIO2 to be in gpio_in function as well).
axp209
------
GPIO | Functions
------------------------
GPIO0 | gpio_in, gpio_out, ldo, adc
GPIO1 | gpio_in, gpio_out, ldo, adc
GPIO2 | gpio_in, gpio_out
axp813
------
GPIO | Functions
------------------------
GPIO0 | gpio_in, gpio_out, ldo, adc
GPIO1 | gpio_in, gpio_out, ldo
drivers/gpio/Kconfig
View file @
c6e40f96
...
...
@@ -122,12 +122,6 @@ config GPIO_ATH79
Select this option to enable GPIO driver for
Atheros AR71XX/AR724X/AR913X SoC devices.
config GPIO_AXP209
tristate "X-Powers AXP209 PMIC GPIO Support"
depends on MFD_AXP20X
help
Say yes to enable GPIO support for the AXP209 PMIC
config GPIO_BCM_KONA
bool "Broadcom Kona GPIO"
depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
...
...
drivers/gpio/Makefile
View file @
c6e40f96
...
...
@@ -32,7 +32,6 @@ obj-$(CONFIG_GPIO_AMDPT) += gpio-amdpt.o
obj-$(CONFIG_GPIO_ARIZONA)
+=
gpio-arizona.o
obj-$(CONFIG_GPIO_ATH79)
+=
gpio-ath79.o
obj-$(CONFIG_GPIO_ASPEED)
+=
gpio-aspeed.o
obj-$(CONFIG_GPIO_AXP209)
+=
gpio-axp209.o
obj-$(CONFIG_GPIO_BCM_KONA)
+=
gpio-bcm-kona.o
obj-$(CONFIG_GPIO_BD9571MWV)
+=
gpio-bd9571mwv.o
obj-$(CONFIG_GPIO_BRCMSTB)
+=
gpio-brcmstb.o
...
...
drivers/gpio/gpio-axp209.c
deleted
100644 → 0
View file @
33b6cb58
/*
* AXP20x GPIO driver
*
* Copyright (C) 2016 Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/bitops.h>
#include <linux/device.h>
#include <linux/gpio/driver.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/mfd/axp20x.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#define AXP20X_GPIO_FUNCTIONS 0x7
#define AXP20X_GPIO_FUNCTION_OUT_LOW 0
#define AXP20X_GPIO_FUNCTION_OUT_HIGH 1
#define AXP20X_GPIO_FUNCTION_INPUT 2
struct
axp20x_gpio
{
struct
gpio_chip
chip
;
struct
regmap
*
regmap
;
};
static
int
axp20x_gpio_get_reg
(
unsigned
offset
)
{
switch
(
offset
)
{
case
0
:
return
AXP20X_GPIO0_CTRL
;
case
1
:
return
AXP20X_GPIO1_CTRL
;
case
2
:
return
AXP20X_GPIO2_CTRL
;
}
return
-
EINVAL
;
}
static
int
axp20x_gpio_input
(
struct
gpio_chip
*
chip
,
unsigned
offset
)
{
struct
axp20x_gpio
*
gpio
=
gpiochip_get_data
(
chip
);
int
reg
;
reg
=
axp20x_gpio_get_reg
(
offset
);
if
(
reg
<
0
)
return
reg
;
return
regmap_update_bits
(
gpio
->
regmap
,
reg
,
AXP20X_GPIO_FUNCTIONS
,
AXP20X_GPIO_FUNCTION_INPUT
);
}
static
int
axp20x_gpio_get
(
struct
gpio_chip
*
chip
,
unsigned
offset
)
{
struct
axp20x_gpio
*
gpio
=
gpiochip_get_data
(
chip
);
unsigned
int
val
;
int
ret
;
ret
=
regmap_read
(
gpio
->
regmap
,
AXP20X_GPIO20_SS
,
&
val
);
if
(
ret
)
return
ret
;
return
!!
(
val
&
BIT
(
offset
+
4
));
}
static
int
axp20x_gpio_get_direction
(
struct
gpio_chip
*
chip
,
unsigned
offset
)
{
struct
axp20x_gpio
*
gpio
=
gpiochip_get_data
(
chip
);
unsigned
int
val
;
int
reg
,
ret
;
reg
=
axp20x_gpio_get_reg
(
offset
);
if
(
reg
<
0
)
return
reg
;
ret
=
regmap_read
(
gpio
->
regmap
,
reg
,
&
val
);
if
(
ret
)
return
ret
;
/*
* This shouldn't really happen if the pin is in use already,
* or if it's not in use yet, it doesn't matter since we're
* going to change the value soon anyway. Default to output.
*/
if
((
val
&
AXP20X_GPIO_FUNCTIONS
)
>
2
)
return
0
;
/*
* The GPIO directions are the three lowest values.
* 2 is input, 0 and 1 are output
*/
return
val
&
2
;
}
static
int
axp20x_gpio_output
(
struct
gpio_chip
*
chip
,
unsigned
offset
,
int
value
)
{
struct
axp20x_gpio
*
gpio
=
gpiochip_get_data
(
chip
);
int
reg
;
reg
=
axp20x_gpio_get_reg
(
offset
);
if
(
reg
<
0
)
return
reg
;
return
regmap_update_bits
(
gpio
->
regmap
,
reg
,
AXP20X_GPIO_FUNCTIONS
,
value
?
AXP20X_GPIO_FUNCTION_OUT_HIGH
:
AXP20X_GPIO_FUNCTION_OUT_LOW
);
}
static
void
axp20x_gpio_set
(
struct
gpio_chip
*
chip
,
unsigned
offset
,
int
value
)
{
axp20x_gpio_output
(
chip
,
offset
,
value
);
}
static
int
axp20x_gpio_probe
(
struct
platform_device
*
pdev
)
{
struct
axp20x_dev
*
axp20x
=
dev_get_drvdata
(
pdev
->
dev
.
parent
);
struct
axp20x_gpio
*
gpio
;
int
ret
;
if
(
!
of_device_is_available
(
pdev
->
dev
.
of_node
))
return
-
ENODEV
;
if
(
!
axp20x
)
{
dev_err
(
&
pdev
->
dev
,
"Parent drvdata not set
\n
"
);
return
-
EINVAL
;
}
gpio
=
devm_kzalloc
(
&
pdev
->
dev
,
sizeof
(
*
gpio
),
GFP_KERNEL
);
if
(
!
gpio
)
return
-
ENOMEM
;
gpio
->
chip
.
base
=
-
1
;
gpio
->
chip
.
can_sleep
=
true
;
gpio
->
chip
.
parent
=
&
pdev
->
dev
;
gpio
->
chip
.
label
=
dev_name
(
&
pdev
->
dev
);
gpio
->
chip
.
owner
=
THIS_MODULE
;
gpio
->
chip
.
get
=
axp20x_gpio_get
;
gpio
->
chip
.
get_direction
=
axp20x_gpio_get_direction
;
gpio
->
chip
.
set
=
axp20x_gpio_set
;
gpio
->
chip
.
direction_input
=
axp20x_gpio_input
;
gpio
->
chip
.
direction_output
=
axp20x_gpio_output
;
gpio
->
chip
.
ngpio
=
3
;
gpio
->
regmap
=
axp20x
->
regmap
;
ret
=
devm_gpiochip_add_data
(
&
pdev
->
dev
,
&
gpio
->
chip
,
gpio
);
if
(
ret
)
{
dev_err
(
&
pdev
->
dev
,
"Failed to register GPIO chip
\n
"
);
return
ret
;
}
dev_info
(
&
pdev
->
dev
,
"AXP209 GPIO driver loaded
\n
"
);
return
0
;
}
static
const
struct
of_device_id
axp20x_gpio_match
[]
=
{
{
.
compatible
=
"x-powers,axp209-gpio"
},
{
}
};
MODULE_DEVICE_TABLE
(
of
,
axp20x_gpio_match
);
static
struct
platform_driver
axp20x_gpio_driver
=
{
.
probe
=
axp20x_gpio_probe
,
.
driver
=
{
.
name
=
"axp20x-gpio"
,
.
of_match_table
=
axp20x_gpio_match
,
},
};
module_platform_driver
(
axp20x_gpio_driver
);
MODULE_AUTHOR
(
"Maxime Ripard <maxime.ripard@free-electrons.com>"
);
MODULE_DESCRIPTION
(
"AXP20x PMIC GPIO driver"
);
MODULE_LICENSE
(
"GPL"
);
drivers/pinctrl/Kconfig
View file @
c6e40f96
...
...
@@ -63,6 +63,16 @@ config PINCTRL_AS3722
open drain configuration for the GPIO pins of AS3722 devices. It also
supports the GPIO functionality through gpiolib.
config PINCTRL_AXP209
tristate "X-Powers AXP209 PMIC pinctrl and GPIO Support"
depends on MFD_AXP20X
help
AXP PMICs provides multiple GPIOs that can be muxed for different
functions. This driver bundles a pinctrl driver to select the function
muxing and a GPIO driver to handle the GPIO when the GPIO function is
selected.
Say yes to enable pinctrl and GPIO support for the AXP209 PMIC
config PINCTRL_BF54x
def_bool y if BF54x
select PINCTRL_ADI2
...
...
drivers/pinctrl/Makefile
View file @
c6e40f96
...
...
@@ -11,6 +11,7 @@ obj-$(CONFIG_GENERIC_PINCONF) += pinconf-generic.o
obj-$(CONFIG_PINCTRL_ADI2)
+=
pinctrl-adi2.o
obj-$(CONFIG_PINCTRL_ARTPEC6)
+=
pinctrl-artpec6.o
obj-$(CONFIG_PINCTRL_AS3722)
+=
pinctrl-as3722.o
obj-$(CONFIG_PINCTRL_AXP209)
+=
pinctrl-axp209.o
obj-$(CONFIG_PINCTRL_BF54x)
+=
pinctrl-adi2-bf54x.o
obj-$(CONFIG_PINCTRL_BF60x)
+=
pinctrl-adi2-bf60x.o
obj-$(CONFIG_PINCTRL_AT91)
+=
pinctrl-at91.o
...
...
drivers/pinctrl/pinctrl-axp209.c
0 → 100644
View file @
c6e40f96
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