gpio: dwapb: Defer clock gating until noirq

GPIO consumers such as gpio-keys can enable IRQ wake and adjust the wake
trigger type from their suspend callbacks. If the DWAPB controller suspends
first, masking interrupts and disabling its clocks in the normal suspend
phase prevents that late wake configuration from reliably reaching the
hardware. Systems with real DWAPB bus clocks then fail to wake from s2idle
through GPIO keys.

Save the register context in the normal suspend callback, but defer IRQ
masking and clock gating until suspend_noirq. At that point all consumers
have finished configuring wake IRQs, so keep the clocks enabled when wake
lines are armed and only gate them when no wake source is active.
Resume_noirq reenables clocks, if they were gated, before the normal resume
path restores registers.

Propagate wake requests to the parent irqchip while keeping the local wake
mask in sync with failures.

Fixes: 6437c7ba69c3 ("gpio: dwapb: Add wakeup source support")
Signed-off-by: Jia Wang <wangjia@ultrarisc.com>
Link: https://patch.msgid.link/20260702-gpio-dwapb-wakeup-v2-1-203f2f33429f@ultrarisc.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

0 files changed, 0 insertions, 0 deletions