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path: root/drivers/gpio/gpiolib-legacy.c
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Diffstat (limited to 'drivers/gpio/gpiolib-legacy.c')
-rw-r--r--drivers/gpio/gpiolib-legacy.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/drivers/gpio/gpiolib-legacy.c b/drivers/gpio/gpiolib-legacy.c
index 0f9429b2522a..078ae6c2df79 100644
--- a/drivers/gpio/gpiolib-legacy.c
+++ b/drivers/gpio/gpiolib-legacy.c
@@ -5,64 +5,6 @@
#include "gpiolib.h"
-/* Warn when drivers omit gpio_request() calls -- legal but ill-advised
- * when setting direction, and otherwise illegal. Until board setup code
- * and drivers use explicit requests everywhere (which won't happen when
- * those calls have no teeth) we can't avoid autorequesting. This nag
- * message should motivate switching to explicit requests... so should
- * the weaker cleanup after faults, compared to gpio_request().
- *
- * NOTE: the autorequest mechanism is going away; at this point it's
- * only "legal" in the sense that (old) code using it won't break yet,
- * but instead only triggers a WARN() stack dump.
- */
-static int gpio_ensure_requested(struct gpio_desc *desc)
-{
- struct gpio_chip *chip = desc->chip;
- unsigned long flags;
- bool request = false;
- int err = 0;
-
- spin_lock_irqsave(&gpio_lock, flags);
-
- if (WARN(test_and_set_bit(FLAG_REQUESTED, &desc->flags) == 0,
- "autorequest GPIO-%d\n", desc_to_gpio(desc))) {
- if (!try_module_get(chip->owner)) {
- gpiod_err(desc, "%s: module can't be gotten\n",
- __func__);
- clear_bit(FLAG_REQUESTED, &desc->flags);
- /* lose */
- err = -EIO;
- goto end;
- }
- desc->label = "[auto]";
- /* caller must chip->request() w/o spinlock */
- if (chip->request)
- request = true;
- }
-
-end:
- spin_unlock_irqrestore(&gpio_lock, flags);
-
- if (request) {
- might_sleep_if(chip->can_sleep);
- err = chip->request(chip, gpio_chip_hwgpio(desc));
-
- if (err < 0) {
- gpiod_dbg(desc, "%s: chip request fail, %d\n",
- __func__, err);
- spin_lock_irqsave(&gpio_lock, flags);
-
- desc->label = NULL;
- clear_bit(FLAG_REQUESTED, &desc->flags);
-
- spin_unlock_irqrestore(&gpio_lock, flags);
- }
- }
-
- return err;
-}
-
void gpio_free(unsigned gpio)
{
gpiod_free(gpio_to_desc(gpio));
@@ -158,51 +100,3 @@ void gpio_free_array(const struct gpio *array, size_t num)
gpio_free((array++)->gpio);
}
EXPORT_SYMBOL_GPL(gpio_free_array);
-
-int gpio_direction_input(unsigned gpio)
-{
- struct gpio_desc *desc = gpio_to_desc(gpio);
- int err;
-
- if (!desc)
- return -EINVAL;
-
- err = gpio_ensure_requested(desc);
- if (err < 0)
- return err;
-
- return gpiod_direction_input(desc);
-}
-EXPORT_SYMBOL_GPL(gpio_direction_input);
-
-int gpio_direction_output(unsigned gpio, int value)
-{
- struct gpio_desc *desc = gpio_to_desc(gpio);
- int err;
-
- if (!desc)
- return -EINVAL;
-
- err = gpio_ensure_requested(desc);
- if (err < 0)
- return err;
-
- return gpiod_direction_output_raw(desc, value);
-}
-EXPORT_SYMBOL_GPL(gpio_direction_output);
-
-int gpio_set_debounce(unsigned gpio, unsigned debounce)
-{
- struct gpio_desc *desc = gpio_to_desc(gpio);
- int err;
-
- if (!desc)
- return -EINVAL;
-
- err = gpio_ensure_requested(desc);
- if (err < 0)
- return err;
-
- return gpiod_set_debounce(desc, debounce);
-}
-EXPORT_SYMBOL_GPL(gpio_set_debounce);