diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.14/0030-GPIO-add-named-gpio-exports.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.14/0030-GPIO-add-named-gpio-exports.patch | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/target/linux/lantiq/patches-3.14/0030-GPIO-add-named-gpio-exports.patch b/target/linux/lantiq/patches-3.14/0030-GPIO-add-named-gpio-exports.patch deleted file mode 100644 index 21db7d8a82..0000000000 --- a/target/linux/lantiq/patches-3.14/0030-GPIO-add-named-gpio-exports.patch +++ /dev/null @@ -1,166 +0,0 @@ -From cc809a441d8f2924f785eb863dfa6aef47a25b0b Mon Sep 17 00:00:00 2001 -From: John Crispin <blogic@openwrt.org> -Date: Tue, 12 Aug 2014 20:49:27 +0200 -Subject: [PATCH 30/36] GPIO: add named gpio exports - -Signed-off-by: John Crispin <blogic@openwrt.org> ---- - drivers/gpio/gpiolib-of.c | 68 +++++++++++++++++++++++++++++++++++++++++ - drivers/gpio/gpiolib.c | 11 +++++-- - include/asm-generic/gpio.h | 5 +++ - include/linux/gpio/consumer.h | 8 +++++ - 4 files changed, 90 insertions(+), 2 deletions(-) - ---- a/drivers/gpio/gpiolib-of.c -+++ b/drivers/gpio/gpiolib-of.c -@@ -21,6 +21,8 @@ - #include <linux/of_gpio.h> - #include <linux/pinctrl/pinctrl.h> - #include <linux/slab.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> - - struct gpio_desc; - -@@ -302,3 +304,69 @@ void of_gpiochip_remove(struct gpio_chip - if (chip->of_node) - of_node_put(chip->of_node); - } -+ -+static struct of_device_id gpio_export_ids[] = { -+ { .compatible = "gpio-export" }, -+ { /* sentinel */ } -+}; -+ -+static int __init 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 (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), -+ }, -+}; -+ -+static int __init of_gpio_export_init(void) -+{ -+ return platform_driver_probe(&gpio_export_driver, of_gpio_export_probe); -+} -+device_initcall(of_gpio_export_init); ---- a/drivers/gpio/gpiolib.c -+++ b/drivers/gpio/gpiolib.c -@@ -798,7 +798,7 @@ 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) - { - unsigned long flags; - int status; -@@ -839,6 +839,9 @@ int gpiod_export(struct gpio_desc *desc, - if (desc->chip->names && desc->chip->names[offset]) - ioname = desc->chip->names[offset]; - -+ if (name) -+ ioname = name; -+ - dev = device_create_with_groups(&gpio_class, desc->chip->dev, - MKDEV(0, 0), desc, gpio_groups, - ioname ? ioname : "gpio%u", -@@ -874,6 +877,12 @@ fail_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 *data) ---- a/include/asm-generic/gpio.h -+++ b/include/asm-generic/gpio.h -@@ -126,6 +126,11 @@ static inline int gpio_export(unsigned g - return gpiod_export(gpio_to_desc(gpio), direction_may_change); - } - -+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 -@@ -219,6 +219,7 @@ static inline struct gpio_chip *gpiod_to - - #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); -@@ -227,6 +228,13 @@ 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) - { |