mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 02:36:51 +07:00
Merge branch 'ib-move-axp209' into devel
This commit is contained in:
Linus Walleij
commit
110e2a38c8
@ -1,10 +1,17 @@
|
||||
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
|
||||
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||||
This driver employs the per-pin muxing pattern.
|
||||
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||||
Required properties:
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- compatible: Should be "x-powers,axp209-gpio"
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- compatible: Should be one of:
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- "x-powers,axp209-gpio"
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- "x-powers,axp813-gpio"
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- #gpio-cells: Should be two. The first cell is the pin number and the
|
||||
second is the GPIO flags.
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- gpio-controller: Marks the device node as a GPIO controller.
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@ -28,3 +35,41 @@ axp209: pmic@34 {
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#gpio-cells = <2>;
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};
|
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};
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|
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The GPIOs can be muxed to other functions and therefore, must be a subnode of
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axp_gpio.
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Example:
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&axp_gpio {
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gpio0_adc: gpio0-adc {
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pins = "GPIO0";
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function = "adc";
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};
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};
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&example_node {
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pinctrl-names = "default";
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pinctrl-0 = <&gpio0_adc>;
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};
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GPIOs and their functions
|
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-------------------------
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Each GPIO is independent from the other (i.e. GPIO0 in gpio_in function does
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not force GPIO1 and GPIO2 to be in gpio_in function as well).
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||||
axp209
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------
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GPIO | Functions
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||||
------------------------
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GPIO0 | gpio_in, gpio_out, ldo, adc
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GPIO1 | gpio_in, gpio_out, ldo, adc
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GPIO2 | gpio_in, gpio_out
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axp813
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------
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GPIO | Functions
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------------------------
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GPIO0 | gpio_in, gpio_out, ldo, adc
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GPIO1 | gpio_in, gpio_out, ldo
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@ -122,12 +122,6 @@ config GPIO_ATH79
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Select this option to enable GPIO driver for
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Atheros AR71XX/AR724X/AR913X SoC devices.
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config GPIO_AXP209
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tristate "X-Powers AXP209 PMIC GPIO Support"
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depends on MFD_AXP20X
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help
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Say yes to enable GPIO support for the AXP209 PMIC
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config GPIO_BCM_KONA
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bool "Broadcom Kona GPIO"
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depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST)
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@ -32,7 +32,6 @@ obj-$(CONFIG_GPIO_AMDPT) += gpio-amdpt.o
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obj-$(CONFIG_GPIO_ARIZONA) += gpio-arizona.o
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obj-$(CONFIG_GPIO_ATH79) += gpio-ath79.o
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obj-$(CONFIG_GPIO_ASPEED) += gpio-aspeed.o
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obj-$(CONFIG_GPIO_AXP209) += gpio-axp209.o
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obj-$(CONFIG_GPIO_BCM_KONA) += gpio-bcm-kona.o
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obj-$(CONFIG_GPIO_BD9571MWV) += gpio-bd9571mwv.o
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obj-$(CONFIG_GPIO_BRCMSTB) += gpio-brcmstb.o
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@ -1,188 +0,0 @@
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/*
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* AXP20x GPIO driver
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*
|
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* Copyright (C) 2016 Maxime Ripard <maxime.ripard@free-electrons.com>
|
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*
|
||||
* 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.
|
||||
*/
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||||
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||||
#include <linux/bitops.h>
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#include <linux/device.h>
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#include <linux/gpio/driver.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/mfd/axp20x.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#define AXP20X_GPIO_FUNCTIONS 0x7
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#define AXP20X_GPIO_FUNCTION_OUT_LOW 0
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#define AXP20X_GPIO_FUNCTION_OUT_HIGH 1
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#define AXP20X_GPIO_FUNCTION_INPUT 2
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struct axp20x_gpio {
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struct gpio_chip chip;
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struct regmap *regmap;
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};
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static int axp20x_gpio_get_reg(unsigned offset)
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{
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switch (offset) {
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case 0:
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return AXP20X_GPIO0_CTRL;
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case 1:
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return AXP20X_GPIO1_CTRL;
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case 2:
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return AXP20X_GPIO2_CTRL;
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}
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return -EINVAL;
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}
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static int axp20x_gpio_input(struct gpio_chip *chip, unsigned offset)
|
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{
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struct axp20x_gpio *gpio = gpiochip_get_data(chip);
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int reg;
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reg = axp20x_gpio_get_reg(offset);
|
||||
if (reg < 0)
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||||
return reg;
|
||||
|
||||
return regmap_update_bits(gpio->regmap, reg,
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||||
AXP20X_GPIO_FUNCTIONS,
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||||
AXP20X_GPIO_FUNCTION_INPUT);
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||||
}
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static int axp20x_gpio_get(struct gpio_chip *chip, unsigned offset)
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{
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struct axp20x_gpio *gpio = gpiochip_get_data(chip);
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unsigned int val;
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int ret;
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ret = regmap_read(gpio->regmap, AXP20X_GPIO20_SS, &val);
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if (ret)
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return ret;
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return !!(val & BIT(offset + 4));
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}
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static int axp20x_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
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{
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struct axp20x_gpio *gpio = gpiochip_get_data(chip);
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unsigned int val;
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int reg, ret;
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reg = axp20x_gpio_get_reg(offset);
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if (reg < 0)
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return reg;
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ret = regmap_read(gpio->regmap, reg, &val);
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||||
if (ret)
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||||
return ret;
|
||||
|
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/*
|
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* 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.
|
||||
*/
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if ((val & AXP20X_GPIO_FUNCTIONS) > 2)
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return 0;
|
||||
|
||||
/*
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||||
* The GPIO directions are the three lowest values.
|
||||
* 2 is input, 0 and 1 are output
|
||||
*/
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return val & 2;
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}
|
||||
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||||
static int axp20x_gpio_output(struct gpio_chip *chip, unsigned offset,
|
||||
int value)
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||||
{
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struct axp20x_gpio *gpio = gpiochip_get_data(chip);
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||||
int reg;
|
||||
|
||||
reg = axp20x_gpio_get_reg(offset);
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||||
if (reg < 0)
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return reg;
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||||
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||||
return regmap_update_bits(gpio->regmap, reg,
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||||
AXP20X_GPIO_FUNCTIONS,
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value ? AXP20X_GPIO_FUNCTION_OUT_HIGH
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: AXP20X_GPIO_FUNCTION_OUT_LOW);
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}
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||||
static void axp20x_gpio_set(struct gpio_chip *chip, unsigned offset,
|
||||
int value)
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||||
{
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axp20x_gpio_output(chip, offset, value);
|
||||
}
|
||||
|
||||
static int axp20x_gpio_probe(struct platform_device *pdev)
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{
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struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
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||||
struct axp20x_gpio *gpio;
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int ret;
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||||
|
||||
if (!of_device_is_available(pdev->dev.of_node))
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return -ENODEV;
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if (!axp20x) {
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dev_err(&pdev->dev, "Parent drvdata not set\n");
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return -EINVAL;
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||||
}
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||||
gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
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if (!gpio)
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return -ENOMEM;
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||||
|
||||
gpio->chip.base = -1;
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||||
gpio->chip.can_sleep = true;
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||||
gpio->chip.parent = &pdev->dev;
|
||||
gpio->chip.label = dev_name(&pdev->dev);
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||||
gpio->chip.owner = THIS_MODULE;
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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) {
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dev_err(&pdev->dev, "Failed to register GPIO chip\n");
|
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return ret;
|
||||
}
|
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||||
dev_info(&pdev->dev, "AXP209 GPIO driver loaded\n");
|
||||
|
||||
return 0;
|
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}
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static const struct of_device_id axp20x_gpio_match[] = {
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||||
{ .compatible = "x-powers,axp209-gpio" },
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{ }
|
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};
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MODULE_DEVICE_TABLE(of, axp20x_gpio_match);
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||||
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static struct platform_driver axp20x_gpio_driver = {
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.probe = axp20x_gpio_probe,
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.driver = {
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.name = "axp20x-gpio",
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.of_match_table = axp20x_gpio_match,
|
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},
|
||||
};
|
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|
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module_platform_driver(axp20x_gpio_driver);
|
||||
|
||||
MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
|
||||
MODULE_DESCRIPTION("AXP20x PMIC GPIO driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
@ -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
|
||||
|
||||
@ -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
|
||||
|
||||
476
drivers/pinctrl/pinctrl-axp209.c
Normal file
476
drivers/pinctrl/pinctrl-axp209.c
Normal file
@ -0,0 +1,476 @@
|
||||
/*
|
||||
* AXP20x pinctrl and GPIO driver
|
||||
*
|
||||
* Copyright (C) 2016 Maxime Ripard <maxime.ripard@free-electrons.com>
|
||||
* Copyright (C) 2017 Quentin Schulz <quentin.schulz@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/of_device.h>
|
||||
#include <linux/pinctrl/pinconf-generic.h>
|
||||
#include <linux/pinctrl/pinctrl.h>
|
||||
#include <linux/pinctrl/pinmux.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
|
||||
|
||||
#define AXP20X_FUNC_GPIO_OUT 0
|
||||
#define AXP20X_FUNC_GPIO_IN 1
|
||||
#define AXP20X_FUNC_LDO 2
|
||||
#define AXP20X_FUNC_ADC 3
|
||||
#define AXP20X_FUNCS_NB 4
|
||||
|
||||
#define AXP20X_MUX_GPIO_OUT 0
|
||||
#define AXP20X_MUX_GPIO_IN BIT(1)
|
||||
#define AXP20X_MUX_ADC BIT(2)
|
||||
|
||||
#define AXP813_MUX_ADC (BIT(2) | BIT(0))
|
||||
|
||||
struct axp20x_pctrl_desc {
|
||||
const struct pinctrl_pin_desc *pins;
|
||||
unsigned int npins;
|
||||
/* Stores the pins supporting LDO function. Bit offset is pin number. */
|
||||
u8 ldo_mask;
|
||||
/* Stores the pins supporting ADC function. Bit offset is pin number. */
|
||||
u8 adc_mask;
|
||||
u8 gpio_status_offset;
|
||||
u8 adc_mux;
|
||||
};
|
||||
|
||||
struct axp20x_pinctrl_function {
|
||||
const char *name;
|
||||
unsigned int muxval;
|
||||
const char **groups;
|
||||
unsigned int ngroups;
|
||||
};
|
||||
|
||||
struct axp20x_pctl {
|
||||
struct gpio_chip chip;
|
||||
struct regmap *regmap;
|
||||
struct pinctrl_dev *pctl_dev;
|
||||
struct device *dev;
|
||||
const struct axp20x_pctrl_desc *desc;
|
||||
struct axp20x_pinctrl_function funcs[AXP20X_FUNCS_NB];
|
||||
};
|
||||
|
||||
static const struct pinctrl_pin_desc axp209_pins[] = {
|
||||
PINCTRL_PIN(0, "GPIO0"),
|
||||
PINCTRL_PIN(1, "GPIO1"),
|
||||
PINCTRL_PIN(2, "GPIO2"),
|
||||
};
|
||||
|
||||
static const struct pinctrl_pin_desc axp813_pins[] = {
|
||||
PINCTRL_PIN(0, "GPIO0"),
|
||||
PINCTRL_PIN(1, "GPIO1"),
|
||||
};
|
||||
|
||||
static const struct axp20x_pctrl_desc axp20x_data = {
|
||||
.pins = axp209_pins,
|
||||
.npins = ARRAY_SIZE(axp209_pins),
|
||||
.ldo_mask = BIT(0) | BIT(1),
|
||||
.adc_mask = BIT(0) | BIT(1),
|
||||
.gpio_status_offset = 4,
|
||||
.adc_mux = AXP20X_MUX_ADC,
|
||||
};
|
||||
|
||||
static const struct axp20x_pctrl_desc axp813_data = {
|
||||
.pins = axp813_pins,
|
||||
.npins = ARRAY_SIZE(axp813_pins),
|
||||
.ldo_mask = BIT(0) | BIT(1),
|
||||
.adc_mask = BIT(0),
|
||||
.gpio_status_offset = 0,
|
||||
.adc_mux = AXP813_MUX_ADC,
|
||||
};
|
||||
|
||||
static int axp20x_gpio_get_reg(unsigned int 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 int offset)
|
||||
{
|
||||
return pinctrl_gpio_direction_input(chip->base + offset);
|
||||
}
|
||||
|
||||
static int axp20x_gpio_get(struct gpio_chip *chip, unsigned int offset)
|
||||
{
|
||||
struct axp20x_pctl *pctl = gpiochip_get_data(chip);
|
||||
unsigned int val;
|
||||
int ret;
|
||||
|
||||
ret = regmap_read(pctl->regmap, AXP20X_GPIO20_SS, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return !!(val & BIT(offset + pctl->desc->gpio_status_offset));
|
||||
}
|
||||
|
||||
static int axp20x_gpio_get_direction(struct gpio_chip *chip,
|
||||
unsigned int offset)
|
||||
{
|
||||
struct axp20x_pctl *pctl = gpiochip_get_data(chip);
|
||||
unsigned int val;
|
||||
int reg, ret;
|
||||
|
||||
reg = axp20x_gpio_get_reg(offset);
|
||||
if (reg < 0)
|
||||
return reg;
|
||||
|
||||
ret = regmap_read(pctl->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 int offset,
|
||||
int value)
|
||||
{
|
||||
chip->set(chip, offset, value);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void axp20x_gpio_set(struct gpio_chip *chip, unsigned int offset,
|
||||
int value)
|
||||
{
|
||||
struct axp20x_pctl *pctl = gpiochip_get_data(chip);
|
||||
int reg;
|
||||
|
||||
reg = axp20x_gpio_get_reg(offset);
|
||||
if (reg < 0)
|
||||
return;
|
||||
|
||||
regmap_update_bits(pctl->regmap, reg,
|
||||
AXP20X_GPIO_FUNCTIONS,
|
||||
value ? AXP20X_GPIO_FUNCTION_OUT_HIGH :
|
||||
AXP20X_GPIO_FUNCTION_OUT_LOW);
|
||||
}
|
||||
|
||||
static int axp20x_pmx_set(struct pinctrl_dev *pctldev, unsigned int offset,
|
||||
u8 config)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
int reg;
|
||||
|
||||
reg = axp20x_gpio_get_reg(offset);
|
||||
if (reg < 0)
|
||||
return reg;
|
||||
|
||||
return regmap_update_bits(pctl->regmap, reg, AXP20X_GPIO_FUNCTIONS,
|
||||
config);
|
||||
}
|
||||
|
||||
static int axp20x_pmx_func_cnt(struct pinctrl_dev *pctldev)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
return ARRAY_SIZE(pctl->funcs);
|
||||
}
|
||||
|
||||
static const char *axp20x_pmx_func_name(struct pinctrl_dev *pctldev,
|
||||
unsigned int selector)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
return pctl->funcs[selector].name;
|
||||
}
|
||||
|
||||
static int axp20x_pmx_func_groups(struct pinctrl_dev *pctldev,
|
||||
unsigned int selector,
|
||||
const char * const **groups,
|
||||
unsigned int *num_groups)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
*groups = pctl->funcs[selector].groups;
|
||||
*num_groups = pctl->funcs[selector].ngroups;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int axp20x_pmx_set_mux(struct pinctrl_dev *pctldev,
|
||||
unsigned int function, unsigned int group)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
unsigned int mask;
|
||||
|
||||
/* Every pin supports GPIO_OUT and GPIO_IN functions */
|
||||
if (function <= AXP20X_FUNC_GPIO_IN)
|
||||
return axp20x_pmx_set(pctldev, group,
|
||||
pctl->funcs[function].muxval);
|
||||
|
||||
if (function == AXP20X_FUNC_LDO)
|
||||
mask = pctl->desc->ldo_mask;
|
||||
else
|
||||
mask = pctl->desc->adc_mask;
|
||||
|
||||
if (!(BIT(group) & mask))
|
||||
return -EINVAL;
|
||||
|
||||
/*
|
||||
* We let the regulator framework handle the LDO muxing as muxing bits
|
||||
* are basically also regulators on/off bits. It's better not to enforce
|
||||
* any state of the regulator when selecting LDO mux so that we don't
|
||||
* interfere with the regulator driver.
|
||||
*/
|
||||
if (function == AXP20X_FUNC_LDO)
|
||||
return 0;
|
||||
|
||||
return axp20x_pmx_set(pctldev, group, pctl->funcs[function].muxval);
|
||||
}
|
||||
|
||||
static int axp20x_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
|
||||
struct pinctrl_gpio_range *range,
|
||||
unsigned int offset, bool input)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
if (input)
|
||||
return axp20x_pmx_set(pctldev, offset,
|
||||
pctl->funcs[AXP20X_FUNC_GPIO_IN].muxval);
|
||||
|
||||
return axp20x_pmx_set(pctldev, offset,
|
||||
pctl->funcs[AXP20X_FUNC_GPIO_OUT].muxval);
|
||||
}
|
||||
|
||||
static const struct pinmux_ops axp20x_pmx_ops = {
|
||||
.get_functions_count = axp20x_pmx_func_cnt,
|
||||
.get_function_name = axp20x_pmx_func_name,
|
||||
.get_function_groups = axp20x_pmx_func_groups,
|
||||
.set_mux = axp20x_pmx_set_mux,
|
||||
.gpio_set_direction = axp20x_pmx_gpio_set_direction,
|
||||
.strict = true,
|
||||
};
|
||||
|
||||
static int axp20x_groups_cnt(struct pinctrl_dev *pctldev)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
return pctl->desc->npins;
|
||||
}
|
||||
|
||||
static int axp20x_group_pins(struct pinctrl_dev *pctldev, unsigned int selector,
|
||||
const unsigned int **pins, unsigned int *num_pins)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
*pins = (unsigned int *)&pctl->desc->pins[selector];
|
||||
*num_pins = 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const char *axp20x_group_name(struct pinctrl_dev *pctldev,
|
||||
unsigned int selector)
|
||||
{
|
||||
struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev);
|
||||
|
||||
return pctl->desc->pins[selector].name;
|
||||
}
|
||||
|
||||
static const struct pinctrl_ops axp20x_pctrl_ops = {
|
||||
.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
|
||||
.dt_free_map = pinconf_generic_dt_free_map,
|
||||
.get_groups_count = axp20x_groups_cnt,
|
||||
.get_group_name = axp20x_group_name,
|
||||
.get_group_pins = axp20x_group_pins,
|
||||
};
|
||||
|
||||
static void axp20x_funcs_groups_from_mask(struct device *dev, unsigned int mask,
|
||||
unsigned int mask_len,
|
||||
struct axp20x_pinctrl_function *func,
|
||||
const struct pinctrl_pin_desc *pins)
|
||||
{
|
||||
unsigned long int mask_cpy = mask;
|
||||
const char **group;
|
||||
unsigned int ngroups = hweight8(mask);
|
||||
int bit;
|
||||
|
||||
func->ngroups = ngroups;
|
||||
if (func->ngroups > 0) {
|
||||
func->groups = devm_kzalloc(dev, ngroups * sizeof(const char *),
|
||||
GFP_KERNEL);
|
||||
group = func->groups;
|
||||
for_each_set_bit(bit, &mask_cpy, mask_len) {
|
||||
*group = pins[bit].name;
|
||||
group++;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void axp20x_build_funcs_groups(struct platform_device *pdev)
|
||||
{
|
||||
struct axp20x_pctl *pctl = platform_get_drvdata(pdev);
|
||||
int i, pin, npins = pctl->desc->npins;
|
||||
|
||||
pctl->funcs[AXP20X_FUNC_GPIO_OUT].name = "gpio_out";
|
||||
pctl->funcs[AXP20X_FUNC_GPIO_OUT].muxval = AXP20X_MUX_GPIO_OUT;
|
||||
pctl->funcs[AXP20X_FUNC_GPIO_IN].name = "gpio_in";
|
||||
pctl->funcs[AXP20X_FUNC_GPIO_IN].muxval = AXP20X_MUX_GPIO_IN;
|
||||
pctl->funcs[AXP20X_FUNC_LDO].name = "ldo";
|
||||
/*
|
||||
* Muxval for LDO is useless as we won't use it.
|
||||
* See comment in axp20x_pmx_set_mux.
|
||||
*/
|
||||
pctl->funcs[AXP20X_FUNC_ADC].name = "adc";
|
||||
pctl->funcs[AXP20X_FUNC_ADC].muxval = pctl->desc->adc_mux;
|
||||
|
||||
/* Every pin supports GPIO_OUT and GPIO_IN functions */
|
||||
for (i = 0; i <= AXP20X_FUNC_GPIO_IN; i++) {
|
||||
pctl->funcs[i].ngroups = npins;
|
||||
pctl->funcs[i].groups = devm_kzalloc(&pdev->dev,
|
||||
npins * sizeof(char *),
|
||||
GFP_KERNEL);
|
||||
for (pin = 0; pin < npins; pin++)
|
||||
pctl->funcs[i].groups[pin] = pctl->desc->pins[pin].name;
|
||||
}
|
||||
|
||||
axp20x_funcs_groups_from_mask(&pdev->dev, pctl->desc->ldo_mask,
|
||||
npins, &pctl->funcs[AXP20X_FUNC_LDO],
|
||||
pctl->desc->pins);
|
||||
|
||||
axp20x_funcs_groups_from_mask(&pdev->dev, pctl->desc->adc_mask,
|
||||
npins, &pctl->funcs[AXP20X_FUNC_ADC],
|
||||
pctl->desc->pins);
|
||||
}
|
||||
|
||||
static const struct of_device_id axp20x_pctl_match[] = {
|
||||
{ .compatible = "x-powers,axp209-gpio", .data = &axp20x_data, },
|
||||
{ .compatible = "x-powers,axp813-gpio", .data = &axp813_data, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, axp20x_pctl_match);
|
||||
|
||||
static int axp20x_pctl_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
|
||||
struct axp20x_pctl *pctl;
|
||||
struct device *dev = &pdev->dev;
|
||||
struct pinctrl_desc *pctrl_desc;
|
||||
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;
|
||||
}
|
||||
|
||||
pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL);
|
||||
if (!pctl)
|
||||
return -ENOMEM;
|
||||
|
||||
pctl->chip.base = -1;
|
||||
pctl->chip.can_sleep = true;
|
||||
pctl->chip.request = gpiochip_generic_request;
|
||||
pctl->chip.free = gpiochip_generic_free;
|
||||
pctl->chip.parent = &pdev->dev;
|
||||
pctl->chip.label = dev_name(&pdev->dev);
|
||||
pctl->chip.owner = THIS_MODULE;
|
||||
pctl->chip.get = axp20x_gpio_get;
|
||||
pctl->chip.get_direction = axp20x_gpio_get_direction;
|
||||
pctl->chip.set = axp20x_gpio_set;
|
||||
pctl->chip.direction_input = axp20x_gpio_input;
|
||||
pctl->chip.direction_output = axp20x_gpio_output;
|
||||
pctl->chip.ngpio = pctl->desc->npins;
|
||||
|
||||
pctl->desc = (struct axp20x_pctrl_desc *)of_device_get_match_data(dev);
|
||||
pctl->regmap = axp20x->regmap;
|
||||
pctl->dev = &pdev->dev;
|
||||
|
||||
platform_set_drvdata(pdev, pctl);
|
||||
|
||||
axp20x_build_funcs_groups(pdev);
|
||||
|
||||
pctrl_desc = devm_kzalloc(&pdev->dev, sizeof(*pctrl_desc), GFP_KERNEL);
|
||||
if (!pctrl_desc)
|
||||
return -ENOMEM;
|
||||
|
||||
pctrl_desc->name = dev_name(&pdev->dev);
|
||||
pctrl_desc->owner = THIS_MODULE;
|
||||
pctrl_desc->pins = pctl->desc->pins;
|
||||
pctrl_desc->npins = pctl->desc->npins;
|
||||
pctrl_desc->pctlops = &axp20x_pctrl_ops;
|
||||
pctrl_desc->pmxops = &axp20x_pmx_ops;
|
||||
|
||||
pctl->pctl_dev = devm_pinctrl_register(&pdev->dev, pctrl_desc, pctl);
|
||||
if (IS_ERR(pctl->pctl_dev)) {
|
||||
dev_err(&pdev->dev, "couldn't register pinctrl driver\n");
|
||||
return PTR_ERR(pctl->pctl_dev);
|
||||
}
|
||||
|
||||
ret = devm_gpiochip_add_data(&pdev->dev, &pctl->chip, pctl);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Failed to register GPIO chip\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = gpiochip_add_pin_range(&pctl->chip, dev_name(&pdev->dev),
|
||||
pctl->desc->pins->number,
|
||||
pctl->desc->pins->number,
|
||||
pctl->desc->npins);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed to add pin range\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
dev_info(&pdev->dev, "AXP209 pinctrl and GPIO driver loaded\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver axp20x_pctl_driver = {
|
||||
.probe = axp20x_pctl_probe,
|
||||
.driver = {
|
||||
.name = "axp20x-gpio",
|
||||
.of_match_table = axp20x_pctl_match,
|
||||
},
|
||||
};
|
||||
|
||||
module_platform_driver(axp20x_pctl_driver);
|
||||
|
||||
MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
|
||||
MODULE_AUTHOR("Quentin Schulz <quentin.schulz@free-electrons.com>");
|
||||
MODULE_DESCRIPTION("AXP20x PMIC pinctrl and GPIO driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue
Block a user