diff options
Diffstat (limited to 'target/linux/generic/patches-3.3/070-gpio-add-flags-to-export-GPIOs-when-requesting.patch')
| -rw-r--r-- | target/linux/generic/patches-3.3/070-gpio-add-flags-to-export-GPIOs-when-requesting.patch | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/target/linux/generic/patches-3.3/070-gpio-add-flags-to-export-GPIOs-when-requesting.patch b/target/linux/generic/patches-3.3/070-gpio-add-flags-to-export-GPIOs-when-requesting.patch deleted file mode 100644 index fb4387e..0000000 --- a/target/linux/generic/patches-3.3/070-gpio-add-flags-to-export-GPIOs-when-requesting.patch +++ /dev/null @@ -1,68 +0,0 @@ -From fc3a1f04f5040255cbc086c419e4237f29f89f88 Mon Sep 17 00:00:00 2001 -From: Wolfram Sang <w.sang@pengutronix.de> -Date: Tue, 13 Dec 2011 18:34:01 +0100 -Subject: [PATCH] gpio: add flags to export GPIOs when requesting - -commit fc3a1f04f5040255cbc086c419e4237f29f89f88 upstream. - -Introduce new flags to automatically export GPIOs when using the convenience -functions gpio_request_one() or gpio_request_array(). This eases support for -custom boards where lots of GPIOs need to be exported for customer -applications. - -Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> -Signed-off-by: Grant Likely <grant.likely@secretlab.ca> ---- - Documentation/gpio.txt | 3 +++ - drivers/gpio/gpiolib.c | 12 +++++++++++- - include/linux/gpio.h | 5 +++++ - 3 files changed, 19 insertions(+), 1 deletion(-) - ---- a/Documentation/gpio.txt -+++ b/Documentation/gpio.txt -@@ -303,6 +303,9 @@ where 'flags' is currently defined to sp - * GPIOF_INIT_LOW - as output, set initial level to LOW - * GPIOF_INIT_HIGH - as output, set initial level to HIGH - -+ * GPIOF_EXPORT_DIR_FIXED - export gpio to sysfs, keep direction -+ * GPIOF_EXPORT_DIR_CHANGEABLE - also export, allow changing direction -+ - since GPIOF_INIT_* are only valid when configured as output, so group valid - combinations as: - ---- a/drivers/gpio/gpiolib.c -+++ b/drivers/gpio/gpiolib.c -@@ -1289,8 +1289,18 @@ int gpio_request_one(unsigned gpio, unsi - (flags & GPIOF_INIT_HIGH) ? 1 : 0); - - if (err) -- gpio_free(gpio); -+ goto free_gpio; - -+ if (flags & GPIOF_EXPORT) { -+ err = gpio_export(gpio, flags & GPIOF_EXPORT_CHANGEABLE); -+ if (err) -+ goto free_gpio; -+ } -+ -+ return 0; -+ -+ free_gpio: -+ gpio_free(gpio); - return err; - } - EXPORT_SYMBOL_GPL(gpio_request_one); ---- a/include/linux/gpio.h -+++ b/include/linux/gpio.h -@@ -14,6 +14,11 @@ - #define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW) - #define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH) - -+#define GPIOF_EXPORT (1 << 2) -+#define GPIOF_EXPORT_CHANGEABLE (1 << 3) -+#define GPIOF_EXPORT_DIR_FIXED (GPIOF_EXPORT) -+#define GPIOF_EXPORT_DIR_CHANGEABLE (GPIOF_EXPORT | GPIOF_EXPORT_CHANGEABLE) -+ - /** - * struct gpio - a structure describing a GPIO with configuration - * @gpio: the GPIO number |