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path: root/recipes-kernel/linux/linux-3.12.70/linux-3.12-gpio-expose-deglitch.patch
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Diffstat (limited to 'recipes-kernel/linux/linux-3.12.70/linux-3.12-gpio-expose-deglitch.patch')
-rw-r--r--recipes-kernel/linux/linux-3.12.70/linux-3.12-gpio-expose-deglitch.patch165
1 files changed, 0 insertions, 165 deletions
diff --git a/recipes-kernel/linux/linux-3.12.70/linux-3.12-gpio-expose-deglitch.patch b/recipes-kernel/linux/linux-3.12.70/linux-3.12-gpio-expose-deglitch.patch
deleted file mode 100644
index b868a36..0000000
--- a/recipes-kernel/linux/linux-3.12.70/linux-3.12-gpio-expose-deglitch.patch
+++ /dev/null
@@ -1,165 +0,0 @@
-Index: linux-3.12.13/drivers/gpio/gpiolib.c
-===================================================================
---- linux-3.12.13.orig/drivers/gpio/gpiolib.c 2014-04-18 09:55:28.325372866 -0500
-+++ linux-3.12.13/drivers/gpio/gpiolib.c 2014-04-18 10:01:46.221371869 -0500
-@@ -90,6 +90,7 @@
- static int gpiod_direction_input_pullup(struct gpio_desc *desc, bool pullup);
- static int gpiod_direction_output(struct gpio_desc *desc, int value);
- static int gpiod_direction_output_pullup(struct gpio_desc *desc, int value, bool pullup);
-+static int gpiod_deglitch(struct gpio_desc *desc, bool enable);
- static int gpiod_get_direction(const struct gpio_desc *desc);
- static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce);
- static int gpiod_get_value_cansleep(const struct gpio_desc *desc);
-@@ -1539,6 +1540,9 @@
- (flags & GPIOF_INIT_HIGH) ? 1 : 0);
- }
-
-+ if (flags & GPIOF_DEGLITCH)
-+ err = gpiod_deglitch(desc, (flags & GPIOF_DEGLITCH) ? true : false);
-+
- if (err)
- goto free_gpio;
-
-@@ -1909,6 +1913,67 @@
- }
- EXPORT_SYMBOL_GPL(gpio_direction_output);
-
-+static int gpiod_deglitch(struct gpio_desc *desc, bool enable)
-+{
-+ unsigned long flags;
-+ struct gpio_chip *chip;
-+ int status = -EINVAL;
-+ int offset;
-+
-+ if (!desc || !desc->chip) {
-+ pr_warn("%s: invalid GPIO\n", __func__);
-+ return -EINVAL;
-+ }
-+
-+ chip = desc->chip;
-+ if (!chip->deglitch) {
-+ pr_warn("%s: missing deglitch() operation\n",
-+ __func__);
-+ return -EIO;
-+ }
-+
-+ spin_lock_irqsave(&gpio_lock, flags);
-+
-+ status = gpio_ensure_requested(desc);
-+ if (status < 0)
-+ goto fail;
-+
-+ /* now we know the gpio is valid and chip won't vanish */
-+
-+ spin_unlock_irqrestore(&gpio_lock, flags);
-+
-+ might_sleep_if(chip->can_sleep);
-+
-+ offset = gpio_chip_hwgpio(desc);
-+ if (status) {
-+ status = chip->request(chip, offset);
-+ if (status < 0) {
-+ pr_debug("GPIO-%d: chip request fail, %d\n",
-+ desc_to_gpio(desc), status);
-+ /* and it's not available to anyone else ...
-+ * gpio_request() is the fully clean solution.
-+ */
-+ goto lose;
-+ }
-+ }
-+
-+ status = chip->deglitch(chip, offset, enable);
-+lose:
-+ return status;
-+fail:
-+ spin_unlock_irqrestore(&gpio_lock, flags);
-+ if (status)
-+ pr_debug("%s: gpio-%d status %d\n", __func__,
-+ desc_to_gpio(desc), status);
-+ return status;
-+}
-+
-+int gpio_deglitch(unsigned gpio, bool enable)
-+{
-+ return gpiod_deglitch(gpio_to_desc(gpio), enable);
-+}
-+EXPORT_SYMBOL_GPL(gpio_deglitch);
-+
- /**
- * gpio_set_debounce - sets @debounce time for a @gpio
- * @gpio: the gpio to set debounce time
-Index: linux-3.12.13/drivers/pinctrl/pinctrl-at91.c
-===================================================================
---- linux-3.12.13.orig/drivers/pinctrl/pinctrl-at91.c 2014-04-18 09:55:28.325372866 -0500
-+++ linux-3.12.13/drivers/pinctrl/pinctrl-at91.c 2014-04-18 10:02:45.041371714 -0500
-@@ -1171,6 +1171,17 @@
- return 0;
- }
-
-+static int at91_gpio_set_deglitch(struct gpio_chip *chip, unsigned offset, bool enable)
-+{
-+ struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
-+ void __iomem *pio = at91_gpio->regbase;
-+ unsigned mask = 1 << offset;
-+
-+ at91_mux_pio3_set_deglitch(pio, mask, enable);
-+
-+ return 0;
-+}
-+
- static int at91_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
- {
- struct at91_gpio_chip *at91_gpio = to_at91_gpio_chip(chip);
-@@ -1542,6 +1553,7 @@
- .get = at91_gpio_get,
- .direction_output = at91_gpio_direction_output,
- .direction_output_pullup = at91_gpio_direction_output_pullup,
-+ .deglitch = at91_gpio_set_deglitch,
- .set = at91_gpio_set,
- .to_irq = at91_gpio_to_irq,
- .dbg_show = at91_gpio_dbg_show,
-Index: linux-3.12.13/include/asm-generic/gpio.h
-===================================================================
---- linux-3.12.13.orig/include/asm-generic/gpio.h 2014-04-18 09:55:28.325372866 -0500
-+++ linux-3.12.13/include/asm-generic/gpio.h 2014-04-18 09:58:13.081372430 -0500
-@@ -67,6 +67,7 @@
- * returns either the value actually sensed, or zero
- * @direction_output: configures signal "offset" as output, or returns error
- * @direction_output_pullup: configures signal "offset" as output with pullup enabled, or returns error
-+ * @deglitch: enables deglitch on signal "offset"
- * @set_debounce: optional hook for setting debounce time for specified gpio in
- * interrupt triggered gpio chips
- * @set: assigns output value for signal "offset"
-@@ -121,6 +122,8 @@
- unsigned offset, int value);
- int (*direction_output_pullup)(struct gpio_chip *chip,
- unsigned offset, int value, bool pullup);
-+ int (*deglitch)(struct gpio_chip *chip,
-+ unsigned offset, bool enable);
- int (*set_debounce)(struct gpio_chip *chip,
- unsigned offset, unsigned debounce);
-
-@@ -182,6 +185,7 @@
- extern int gpio_direction_input_pullup(unsigned gpio, bool pullup);
- extern int gpio_direction_output(unsigned gpio, int value);
- extern int gpio_direction_output_pullup(unsigned gpio, int value, bool pullup);
-+extern int gpio_deglitch(unsigned gpio, bool enable);
-
- extern int gpio_set_debounce(unsigned gpio, unsigned debounce);
-
-Index: linux-3.12.13/include/linux/gpio.h
-===================================================================
---- linux-3.12.13.orig/include/linux/gpio.h 2014-04-18 09:55:28.325372866 -0500
-+++ linux-3.12.13/include/linux/gpio.h 2014-04-18 09:57:56.305372474 -0500
-@@ -13,9 +13,11 @@
- #define GPIOF_INIT_HIGH (1 << 1)
-
- #define GPIOF_PULLUP (2 << 0)
-+#define GPIOF_DEGLITCH (2 << 1)
-
- #define GPIOF_IN (GPIOF_DIR_IN)
- #define GPIOF_IN_PULLUP (GPIOF_DIR_IN | GPIOF_PULLUP)
-+#define GPIOF_IN_DEGLITCH (GPIOF_DIR_IN | GPIOF_DEGLITCH)
- #define GPIOF_OUT_INIT_LOW (GPIOF_DIR_OUT | GPIOF_INIT_LOW)
- #define GPIOF_OUT_INIT_HIGH (GPIOF_DIR_OUT | GPIOF_INIT_HIGH)
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-11 19:20:09 +0000