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b4aad29a1d
Enable testing kernel. Delete upstreamed patches: 0098-disable_cm.patch can be dropped, upstream fixed CM handling. Fix compile errors by using new kernel APIs. Fix fuzz by manually editing patches to ensure the code goes in the right place. For 721-NET-no-auto-carrier-off-support.patch, revert upstream commit a307593a6 to keep the OpenWrt ralink driver operational. Add mt7621-pci-phy patch to select REGMAP_MMIO as discussed in PR #3693 and #3952. Rename patches to follow the 3-digit classification from the OpenWrt Developer Guide. Run automatic quilt refresh. Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
166 lines
4.8 KiB
Diff
166 lines
4.8 KiB
Diff
From 4267880319bc1a2270d352e0ded6d6386242a7ef Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Tue, 12 Aug 2014 20:49:27 +0200
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Subject: [PATCH 24/53] GPIO: add named gpio exports
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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drivers/gpio/gpiolib-of.c | 68 +++++++++++++++++++++++++++++++++++++++++
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drivers/gpio/gpiolib-sysfs.c | 10 +++++-
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include/asm-generic/gpio.h | 6 ++++
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include/linux/gpio/consumer.h | 8 +++++
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4 files changed, 91 insertions(+), 1 deletion(-)
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--- a/drivers/gpio/gpiolib-of.c
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+++ b/drivers/gpio/gpiolib-of.c
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@@ -19,6 +19,8 @@
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/slab.h>
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#include <linux/gpio/machine.h>
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+#include <linux/init.h>
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+#include <linux/platform_device.h>
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#include "gpiolib.h"
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#include "gpiolib-of.h"
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@@ -1039,3 +1041,68 @@ void of_gpiochip_remove(struct gpio_chip
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{
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of_node_put(chip->of_node);
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}
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+
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+static struct of_device_id gpio_export_ids[] = {
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+ { .compatible = "gpio-export" },
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+ { /* sentinel */ }
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+};
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+
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+static int of_gpio_export_probe(struct platform_device *pdev)
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+{
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+ struct device_node *np = pdev->dev.of_node;
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+ struct device_node *cnp;
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+ u32 val;
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+ int nb = 0;
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+
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+ for_each_child_of_node(np, cnp) {
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+ const char *name = NULL;
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+ int gpio;
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+ bool dmc;
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+ int max_gpio = 1;
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+ int i;
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+
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+ of_property_read_string(cnp, "gpio-export,name", &name);
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+
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+ if (!name)
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+ max_gpio = of_gpio_count(cnp);
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+
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+ for (i = 0; i < max_gpio; i++) {
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+ unsigned flags = 0;
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+ enum of_gpio_flags of_flags;
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+
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+ gpio = of_get_gpio_flags(cnp, i, &of_flags);
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+ if (!gpio_is_valid(gpio))
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+ return gpio;
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+
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+ if (of_flags == OF_GPIO_ACTIVE_LOW)
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+ flags |= GPIOF_ACTIVE_LOW;
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+
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+ if (!of_property_read_u32(cnp, "gpio-export,output", &val))
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+ flags |= val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW;
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+ else
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+ flags |= GPIOF_IN;
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+
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+ if (devm_gpio_request_one(&pdev->dev, gpio, flags, name ? name : of_node_full_name(np)))
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+ continue;
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+
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+ dmc = of_property_read_bool(cnp, "gpio-export,direction_may_change");
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+ gpio_export_with_name(gpio, dmc, name);
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+ nb++;
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+ }
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+ }
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+
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+ dev_info(&pdev->dev, "%d gpio(s) exported\n", nb);
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+
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+ return 0;
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+}
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+
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+static struct platform_driver gpio_export_driver = {
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+ .driver = {
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+ .name = "gpio-export",
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+ .owner = THIS_MODULE,
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+ .of_match_table = of_match_ptr(gpio_export_ids),
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+ },
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+ .probe = of_gpio_export_probe,
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+};
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+
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+module_platform_driver(gpio_export_driver);
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--- a/drivers/gpio/gpiolib-sysfs.c
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+++ b/drivers/gpio/gpiolib-sysfs.c
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@@ -564,7 +564,7 @@ static struct class gpio_class = {
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*
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* Returns zero on success, else an error.
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*/
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-int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
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+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name)
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{
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struct gpio_chip *chip;
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struct gpio_device *gdev;
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@@ -626,6 +626,8 @@ int gpiod_export(struct gpio_desc *desc,
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offset = gpio_chip_hwgpio(desc);
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if (chip->names && chip->names[offset])
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ioname = chip->names[offset];
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+ if (name)
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+ ioname = name;
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dev = device_create_with_groups(&gpio_class, &gdev->dev,
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MKDEV(0, 0), data, gpio_groups,
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@@ -647,6 +649,12 @@ err_unlock:
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gpiod_dbg(desc, "%s: status %d\n", __func__, status);
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return status;
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}
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+EXPORT_SYMBOL_GPL(__gpiod_export);
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+
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+int gpiod_export(struct gpio_desc *desc, bool direction_may_change)
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+{
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+ return __gpiod_export(desc, direction_may_change, NULL);
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+}
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EXPORT_SYMBOL_GPL(gpiod_export);
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static int match_export(struct device *dev, const void *desc)
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--- a/include/asm-generic/gpio.h
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+++ b/include/asm-generic/gpio.h
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@@ -125,6 +125,12 @@ static inline int gpio_export(unsigned g
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return gpiod_export(gpio_to_desc(gpio), direction_may_change);
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}
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+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
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+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name)
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+{
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+ return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name);
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+}
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+
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static inline int gpio_export_link(struct device *dev, const char *name,
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unsigned gpio)
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{
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--- a/include/linux/gpio/consumer.h
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+++ b/include/linux/gpio/consumer.h
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@@ -713,6 +713,7 @@ static inline void devm_acpi_dev_remove_
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#if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS)
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+int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name);
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int gpiod_export(struct gpio_desc *desc, bool direction_may_change);
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int gpiod_export_link(struct device *dev, const char *name,
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struct gpio_desc *desc);
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@@ -720,6 +721,13 @@ void gpiod_unexport(struct gpio_desc *de
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#else /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */
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+static inline int _gpiod_export(struct gpio_desc *desc,
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+ bool direction_may_change,
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+ const char *name)
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+{
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+ return -ENOSYS;
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+}
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+
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static inline int gpiod_export(struct gpio_desc *desc,
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bool direction_may_change)
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{
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