From 89b99e9c1a3c89602beed813830efc95784b20d5 Mon Sep 17 00:00:00 2001 From: Ilya Lipnitskiy Date: Fri, 23 Apr 2021 17:20:11 -0700 Subject: treewide: consolidate named GPIO patch into hack-5.10 ath79, lantiq, ipq40xx, ramips all use the OpenWrt-specific gpio-export functionality. Consolidate the patch that adds it under hack-5.10 since this logic is obviously not target-specific. For those who want to disable it, unsetting CONFIG_GPIO_SYSFS symbol will disable this code. Signed-off-by: Ilya Lipnitskiy --- .../0036-GPIO-add-named-gpio-exports.patch | 165 --------------------- 1 file changed, 165 deletions(-) delete mode 100644 target/linux/ath79/patches-5.10/0036-GPIO-add-named-gpio-exports.patch (limited to 'target/linux/ath79') diff --git a/target/linux/ath79/patches-5.10/0036-GPIO-add-named-gpio-exports.patch b/target/linux/ath79/patches-5.10/0036-GPIO-add-named-gpio-exports.patch deleted file mode 100644 index c7899cc711..0000000000 --- a/target/linux/ath79/patches-5.10/0036-GPIO-add-named-gpio-exports.patch +++ /dev/null @@ -1,165 +0,0 @@ -From 4267880319bc1a2270d352e0ded6d6386242a7ef Mon Sep 17 00:00:00 2001 -From: John Crispin -Date: Tue, 12 Aug 2014 20:49:27 +0200 -Subject: [PATCH 24/53] GPIO: add named gpio exports - -Signed-off-by: John Crispin ---- - drivers/gpio/gpiolib-of.c | 68 +++++++++++++++++++++++++++++++++++++++++ - drivers/gpio/gpiolib-sysfs.c | 10 +++++- - include/asm-generic/gpio.h | 6 ++++ - include/linux/gpio/consumer.h | 8 +++++ - 4 files changed, 91 insertions(+), 1 deletion(-) - ---- a/drivers/gpio/gpiolib-of.c -+++ b/drivers/gpio/gpiolib-of.c -@@ -19,6 +19,8 @@ - #include - #include - #include -+#include -+#include - - #include "gpiolib.h" - #include "gpiolib-of.h" -@@ -1039,3 +1041,68 @@ void of_gpiochip_remove(struct gpio_chip - { - of_node_put(chip->of_node); - } -+ -+static struct of_device_id gpio_export_ids[] = { -+ { .compatible = "gpio-export" }, -+ { /* sentinel */ } -+}; -+ -+static int of_gpio_export_probe(struct platform_device *pdev) -+{ -+ struct device_node *np = pdev->dev.of_node; -+ struct device_node *cnp; -+ u32 val; -+ int nb = 0; -+ -+ for_each_child_of_node(np, cnp) { -+ const char *name = NULL; -+ int gpio; -+ bool dmc; -+ int max_gpio = 1; -+ int i; -+ -+ of_property_read_string(cnp, "gpio-export,name", &name); -+ -+ if (!name) -+ max_gpio = of_gpio_count(cnp); -+ -+ for (i = 0; i < max_gpio; i++) { -+ unsigned flags = 0; -+ enum of_gpio_flags of_flags; -+ -+ gpio = of_get_gpio_flags(cnp, i, &of_flags); -+ if (!gpio_is_valid(gpio)) -+ return gpio; -+ -+ if (of_flags == OF_GPIO_ACTIVE_LOW) -+ flags |= GPIOF_ACTIVE_LOW; -+ -+ if (!of_property_read_u32(cnp, "gpio-export,output", &val)) -+ flags |= val ? GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW; -+ else -+ flags |= GPIOF_IN; -+ -+ if (devm_gpio_request_one(&pdev->dev, gpio, flags, name ? name : of_node_full_name(np))) -+ continue; -+ -+ dmc = of_property_read_bool(cnp, "gpio-export,direction_may_change"); -+ gpio_export_with_name(gpio, dmc, name); -+ nb++; -+ } -+ } -+ -+ dev_info(&pdev->dev, "%d gpio(s) exported\n", nb); -+ -+ return 0; -+} -+ -+static struct platform_driver gpio_export_driver = { -+ .driver = { -+ .name = "gpio-export", -+ .owner = THIS_MODULE, -+ .of_match_table = of_match_ptr(gpio_export_ids), -+ }, -+ .probe = of_gpio_export_probe, -+}; -+ -+module_platform_driver(gpio_export_driver); ---- a/drivers/gpio/gpiolib-sysfs.c -+++ b/drivers/gpio/gpiolib-sysfs.c -@@ -572,7 +572,7 @@ static struct class gpio_class = { - * - * Returns zero on success, else an error. - */ --int gpiod_export(struct gpio_desc *desc, bool direction_may_change) -+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name) - { - struct gpio_chip *chip; - struct gpio_device *gdev; -@@ -634,6 +634,8 @@ int gpiod_export(struct gpio_desc *desc, - offset = gpio_chip_hwgpio(desc); - if (chip->names && chip->names[offset]) - ioname = chip->names[offset]; -+ if (name) -+ ioname = name; - - dev = device_create_with_groups(&gpio_class, &gdev->dev, - MKDEV(0, 0), data, gpio_groups, -@@ -655,6 +657,12 @@ err_unlock: - gpiod_dbg(desc, "%s: status %d\n", __func__, status); - return status; - } -+EXPORT_SYMBOL_GPL(__gpiod_export); -+ -+int gpiod_export(struct gpio_desc *desc, bool direction_may_change) -+{ -+ return __gpiod_export(desc, direction_may_change, NULL); -+} - EXPORT_SYMBOL_GPL(gpiod_export); - - static int match_export(struct device *dev, const void *desc) ---- a/include/asm-generic/gpio.h -+++ b/include/asm-generic/gpio.h -@@ -125,6 +125,12 @@ static inline int gpio_export(unsigned g - return gpiod_export(gpio_to_desc(gpio), direction_may_change); - } - -+int __gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name); -+static inline int gpio_export_with_name(unsigned gpio, bool direction_may_change, const char *name) -+{ -+ return __gpiod_export(gpio_to_desc(gpio), direction_may_change, name); -+} -+ - static inline int gpio_export_link(struct device *dev, const char *name, - unsigned gpio) - { ---- a/include/linux/gpio/consumer.h -+++ b/include/linux/gpio/consumer.h -@@ -715,6 +715,7 @@ static inline void devm_acpi_dev_remove_ - - #if IS_ENABLED(CONFIG_GPIOLIB) && IS_ENABLED(CONFIG_GPIO_SYSFS) - -+int _gpiod_export(struct gpio_desc *desc, bool direction_may_change, const char *name); - int gpiod_export(struct gpio_desc *desc, bool direction_may_change); - int gpiod_export_link(struct device *dev, const char *name, - struct gpio_desc *desc); -@@ -722,6 +723,13 @@ void gpiod_unexport(struct gpio_desc *de - - #else /* CONFIG_GPIOLIB && CONFIG_GPIO_SYSFS */ - -+static inline int _gpiod_export(struct gpio_desc *desc, -+ bool direction_may_change, -+ const char *name) -+{ -+ return -ENOSYS; -+} -+ - static inline int gpiod_export(struct gpio_desc *desc, - bool direction_may_change) - { -- cgit v1.2.3