soc: apple: apple-pmgr-pwrstate: Mark on-at-boot PDs as wakeup

marcan · marcan · commit f3c60a26081e · 2023-11-19T15:23:38.000+09:00
The genpd core does not have a generic mechanism for skipping genpd
shutdown on system sleep, but it does have the wakeup path mechanism
that is essentially the same thing.

Mark all PDs that are on at boot as potentially wakeup-relevant, which
means they can *optionally* stay on. Drivers have to opt into this with
device_set_wakeup_path() to actually force them to remain on.

Signed-off-by: Hector Martin &lt;marcan@marcan.st&gt;
diff --git a/drivers/pmdomain/apple/pmgr-pwrstate.c b/drivers/pmdomain/apple/pmgr-pwrstate.c
@@ -243,7 +243,7 @@ static int apple_pmgr_ps_probe(struct platform_device *pdev)
 			active = apple_pmgr_ps_power_on(&ps->genpd) == 0;
 		}
 	} else if (active) {
-		ps->genpd.flags |= GENPD_FLAG_DEFER_OFF;
+		ps->genpd.flags |= GENPD_FLAG_DEFER_OFF | GENPD_FLAG_ACTIVE_WAKEUP;
 	}
 
 	/* Turn on auto-PM if the domain is already on */

Original file line number	Diff line number	Diff line change
`@@ -243,7 +243,7 @@ static int apple_pmgr_ps_probe(struct platform_device *pdev)`
`243`	`243`	`active = apple_pmgr_ps_power_on(&ps->genpd) == 0;`
`244`	`244`	`}`
`245`	`245`	`} else if (active) {`
`246`		`- ps->genpd.flags \|= GENPD_FLAG_DEFER_OFF;`
	`246`	`+ ps->genpd.flags \|= GENPD_FLAG_DEFER_OFF \| GENPD_FLAG_ACTIVE_WAKEUP;`
`247`	`247`	`}`
`248`	`248`
`249`	`249`	`/* Turn on auto-PM if the domain is already on */`