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[PATCH] driver:gpio:fix edge interrupt miss after str

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the Senario is gpio is config as both egde trigger and wakeup interrupt,
the system entry suspend and this gpio wakeup the system, and the polarity will
be toggle in  dwapb_do_irq, but after that dwapb_gpio_resume will
overwirte the polarity, make toggle miss, so if as wakeup int ,should
not do resum
This commit is contained in:
清欢
2024-03-18 10:34:21 +08:00
committed by Han Gao
parent e7aceec67d
commit 38d42bd66e
1 changed files with 7 additions and 1 deletions
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8
drivers/gpio/gpio-dwapb.c
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@@ -775,6 +775,7 @@ static int dwapb_gpio_suspend(struct device *dev)
static int dwapb_gpio_resume(struct device *dev)
{
struct dwapb_gpio *gpio = dev_get_drvdata(dev);
struct dwapb_context *ctx = gpio->ports[0].ctx;
struct gpio_chip *gc = &gpio->ports[0].gc;
unsigned long flags;
int i, err;
@@ -788,6 +789,7 @@ static int dwapb_gpio_resume(struct device *dev)
spin_lock_irqsave(&gc->bgpio_lock, flags);
for (i = 0; i < gpio->nr_ports; i++) {
unsigned int offset;
unsigned int int_pol,preserve_bit,resume_bit;
unsigned int idx = gpio->ports[i].idx;
struct dwapb_context *ctx = gpio->ports[i].ctx;
@@ -803,7 +805,11 @@ static int dwapb_gpio_resume(struct device *dev)
/* Only port A can provide interrupts */
if (idx == 0) {
dwapb_write(gpio, GPIO_INTTYPE_LEVEL, ctx->int_type);
dwapb_write(gpio, GPIO_INT_POLARITY, ctx->int_pol);
int_pol = dwapb_read(gpio, GPIO_INT_POLARITY);
preserve_bit = int_pol & ctx->wake_en;
resume_bit = ctx->int_pol & (~ctx->wake_en);
int_pol = preserve_bit | resume_bit;
dwapb_write(gpio, GPIO_INT_POLARITY, int_pol);
dwapb_write(gpio, GPIO_PORTA_DEBOUNCE, ctx->int_deb);
dwapb_write(gpio, GPIO_INTEN, ctx->int_en);
dwapb_write(gpio, GPIO_INTMASK, ctx->int_mask);