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gpiolib: cdev: add GPIO_V2_LINE_FLAG_EDGE_BOTH and use it in edge_irq_thread()

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Add GPIO_V2_LINE_FLAG_EDGE_BOTH macro and use it in edge_irq_thread() to
improve readability of edge handling cases.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Kent Gibson <warthog618@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Kent Gibson 2020-10-29 16:48:32 +08:00 committed by Bartosz Golaszewski
parent 43ddebdd09
commit 5e2ca893d7
1 changed files with 3 additions and 2 deletions
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5
drivers/gpio/gpiolib-cdev.c
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@ -510,6 +510,8 @@ struct linereq {
(GPIO_V2_LINE_FLAG_EDGE_RISING | \
GPIO_V2_LINE_FLAG_EDGE_FALLING)
#define GPIO_V2_LINE_FLAG_EDGE_BOTH GPIO_V2_LINE_EDGE_FLAGS
#define GPIO_V2_LINE_VALID_FLAGS \
(GPIO_V2_LINE_FLAG_ACTIVE_LOW | \
GPIO_V2_LINE_DIRECTION_FLAGS | \
@ -560,8 +562,7 @@ static irqreturn_t edge_irq_thread(int irq, void *p)
line->timestamp_ns = 0;
eflags = READ_ONCE(line->eflags);
if (eflags == (GPIO_V2_LINE_FLAG_EDGE_RISING |
GPIO_V2_LINE_FLAG_EDGE_FALLING)) {
if (eflags == GPIO_V2_LINE_FLAG_EDGE_BOTH) {
int level = gpiod_get_value_cansleep(line->desc);
if (level)