If a pin isn't marked as a wake source processing any interrupts is
just going to destroy battery life. The APU may wake up from a hardware
sleep state to process the interrupt but not return control to the OS.
Mask interrupt for all non-wake source pins at suspend. They'll be
re-enabled at resume.
Reported-and-tested-by: Marcus Aram <marcus+oss@oxar.nl>
Reported-and-tested-by: Mark Herbert <mark.herbert42@gmail.com>
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2812
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20231203032431.30277-3-mario.limonciello@amd.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
raw_spin_lock_irqsave(&gpio_dev->lock, flags);
gpio_dev->saved_regs[i] = readl(gpio_dev->base + pin * 4) & ~PIN_IRQ_PENDING;
+
+ /* mask any interrupts not intended to be a wake source */
+ if (!(gpio_dev->saved_regs[i] & WAKE_SOURCE)) {
+ writel(gpio_dev->saved_regs[i] & ~BIT(INTERRUPT_MASK_OFF),
+ gpio_dev->base + pin * 4);
+ pm_pr_dbg("Disabling GPIO #%d interrupt for suspend.\n",
+ pin);
+ }
+
raw_spin_unlock_irqrestore(&gpio_dev->lock, flags);
}
#define FUNCTION_MASK GENMASK(1, 0)
#define FUNCTION_INVALID GENMASK(7, 0)
+#define WAKE_SOURCE (BIT(WAKE_CNTRL_OFF_S0I3) | \
+ BIT(WAKE_CNTRL_OFF_S3) | \
+ BIT(WAKE_CNTRL_OFF_S4) | \
+ BIT(WAKECNTRL_Z_OFF))
+
struct amd_function {
const char *name;
const char * const groups[NSELECTS];