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)
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
+++ /dev/null
-/*
- * 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 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)
-{
- 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 int 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 int 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 int 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 int 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");
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
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
--- /dev/null
+/*
+ * 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 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)
+{
+ 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 int 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 int 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 int 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 int 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");
projects / openwrt / staging / blogic.git / commitdiff