aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/lantiq/patches-3.2/0001-GPIO-add-bindings-for-managed-devices.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/lantiq/patches-3.2/0001-GPIO-add-bindings-for-managed-devices.patch')
-rw-r--r--target/linux/lantiq/patches-3.2/0001-GPIO-add-bindings-for-managed-devices.patch134
1 files changed, 0 insertions, 134 deletions
diff --git a/target/linux/lantiq/patches-3.2/0001-GPIO-add-bindings-for-managed-devices.patch b/target/linux/lantiq/patches-3.2/0001-GPIO-add-bindings-for-managed-devices.patch
deleted file mode 100644
index 9064dc9a9a..0000000000
--- a/target/linux/lantiq/patches-3.2/0001-GPIO-add-bindings-for-managed-devices.patch
+++ /dev/null
@@ -1,134 +0,0 @@
-From 8817c547f92016b9276ffec88b708c2c16d1f0f1 Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Thu, 8 Mar 2012 13:23:53 +0100
-Subject: [PATCH 01/73] GPIO: add bindings for managed devices
-
-This patch adds 2 functions that allow managed devices to request GPIOs.
-These GPIOs will then be managed by drivers/base/devres.c.
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
-Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
----
- drivers/gpio/Makefile | 2 +-
- drivers/gpio/devres.c | 90 ++++++++++++++++++++++++++++++++++++++++++++
- include/asm-generic/gpio.h | 4 ++
- 3 files changed, 95 insertions(+), 1 deletions(-)
- create mode 100644 drivers/gpio/devres.c
-
---- a/drivers/gpio/Makefile
-+++ b/drivers/gpio/Makefile
-@@ -2,7 +2,7 @@
-
- ccflags-$(CONFIG_DEBUG_GPIO) += -DDEBUG
-
--obj-$(CONFIG_GPIOLIB) += gpiolib.o
-+obj-$(CONFIG_GPIOLIB) += gpiolib.o devres.o
-
- # Device drivers. Generally keep list sorted alphabetically
- obj-$(CONFIG_GPIO_GENERIC) += gpio-generic.o
---- /dev/null
-+++ b/drivers/gpio/devres.c
-@@ -0,0 +1,90 @@
-+/*
-+ * drivers/gpio/devres.c - managed gpio resources
-+ *
-+ * This program is free software; you can redistribute it and/or modify
-+ * it under the terms of the GNU General Public License version 2
-+ * as published by the Free Software Foundation.
-+ *
-+ * You should have received a copy of the GNU General Public License
-+ * along with this program; if not, write to the Free Software
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-+ *
-+ * This file is based on kernel/irq/devres.c
-+ *
-+ * Copyright (c) 2011 John Crispin <blogic@openwrt.org>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/gpio.h>
-+#include <linux/device.h>
-+#include <linux/gfp.h>
-+
-+static void devm_gpio_release(struct device *dev, void *res)
-+{
-+ unsigned *gpio = res;
-+
-+ gpio_free(*gpio);
-+}
-+
-+static int devm_gpio_match(struct device *dev, void *res, void *data)
-+{
-+ unsigned *this = res, *gpio = data;
-+
-+ return *this == *gpio;
-+}
-+
-+/**
-+ * devm_gpio_request - request a gpio for a managed device
-+ * @dev: device to request the gpio for
-+ * @gpio: gpio to allocate
-+ * @label: the name of the requested gpio
-+ *
-+ * Except for the extra @dev argument, this function takes the
-+ * same arguments and performs the same function as
-+ * gpio_request(). GPIOs requested with this function will be
-+ * automatically freed on driver detach.
-+ *
-+ * If an GPIO allocated with this function needs to be freed
-+ * separately, devm_gpio_free() must be used.
-+ */
-+
-+int devm_gpio_request(struct device *dev, unsigned gpio, const char *label)
-+{
-+ unsigned *dr;
-+ int rc;
-+
-+ dr = devres_alloc(devm_gpio_release, sizeof(unsigned), GFP_KERNEL);
-+ if (!dr)
-+ return -ENOMEM;
-+
-+ rc = gpio_request(gpio, label);
-+ if (rc) {
-+ devres_free(dr);
-+ return rc;
-+ }
-+
-+ *dr = gpio;
-+ devres_add(dev, dr);
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(devm_gpio_request);
-+
-+/**
-+ * devm_gpio_free - free an interrupt
-+ * @dev: device to free gpio for
-+ * @gpio: gpio to free
-+ *
-+ * Except for the extra @dev argument, this function takes the
-+ * same arguments and performs the same function as gpio_free().
-+ * This function instead of gpio_free() should be used to manually
-+ * free GPIOs allocated with devm_gpio_request().
-+ */
-+void devm_gpio_free(struct device *dev, unsigned int gpio)
-+{
-+
-+ WARN_ON(devres_destroy(dev, devm_gpio_release, devm_gpio_match,
-+ &gpio));
-+ gpio_free(gpio);
-+}
-+EXPORT_SYMBOL(devm_gpio_free);
---- a/include/asm-generic/gpio.h
-+++ b/include/asm-generic/gpio.h
-@@ -175,6 +175,10 @@ extern int gpio_request_one(unsigned gpi
- extern int gpio_request_array(const struct gpio *array, size_t num);
- extern void gpio_free_array(const struct gpio *array, size_t num);
-
-+/* bindings for managed devices that want to request gpios */
-+int devm_gpio_request(struct device *dev, unsigned gpio, const char *label);
-+void devm_gpio_free(struct device *dev, unsigned int gpio);
-+
- #ifdef CONFIG_GPIO_SYSFS
-
- /*