From efa529b31afe50b88f26a529352c8213e82d61be Mon Sep 17 00:00:00 2001 From: "xianwei.zhao" Date: Mon, 11 Sep 2023 10:52:19 +0800 Subject: pmdomain: amlogic: add driver to support power parent node Some power domains depends on other domains, Such as Amlogic T7 SoC. Add parent node to support this case. Signed-off-by: xianwei.zhao Link: https://lore.kernel.org/r/20230911025223.3433776-3-xianwei.zhao@amlogic.com [Ulf: Re-based to fit the pmdomain subsystem] Signed-off-by: Ulf Hansson --- drivers/pmdomain/amlogic/meson-secure-pwrc.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) (limited to 'drivers/pmdomain') diff --git a/drivers/pmdomain/amlogic/meson-secure-pwrc.c b/drivers/pmdomain/amlogic/meson-secure-pwrc.c index 5ac2437ab8ad..ecada537b19c 100644 --- a/drivers/pmdomain/amlogic/meson-secure-pwrc.c +++ b/drivers/pmdomain/amlogic/meson-secure-pwrc.c @@ -19,10 +19,12 @@ #define PWRC_ON 1 #define PWRC_OFF 0 +#define PWRC_NO_PARENT UINT_MAX struct meson_secure_pwrc_domain { struct generic_pm_domain base; unsigned int index; + unsigned int parent; struct meson_secure_pwrc *pwrc; }; @@ -34,6 +36,7 @@ struct meson_secure_pwrc { struct meson_secure_pwrc_domain_desc { unsigned int index; + unsigned int parent; unsigned int flags; char *name; bool (*is_off)(struct meson_secure_pwrc_domain *pwrc_domain); @@ -90,8 +93,19 @@ static int meson_secure_pwrc_on(struct generic_pm_domain *domain) { \ .name = #__name, \ .index = PWRC_##__name##_ID, \ - .is_off = pwrc_secure_is_off, \ + .is_off = pwrc_secure_is_off, \ .flags = __flag, \ + .parent = PWRC_NO_PARENT, \ +} + +#define TOP_PD(__name, __flag, __parent) \ +[PWRC_##__name##_ID] = \ +{ \ + .name = #__name, \ + .index = PWRC_##__name##_ID, \ + .is_off = pwrc_secure_is_off, \ + .flags = __flag, \ + .parent = __parent, \ } static struct meson_secure_pwrc_domain_desc a1_pwrc_domains[] = { @@ -202,6 +216,7 @@ static int meson_secure_pwrc_probe(struct platform_device *pdev) dom->pwrc = pwrc; dom->index = match->domains[i].index; + dom->parent = match->domains[i].parent; dom->base.name = match->domains[i].name; dom->base.flags = match->domains[i].flags; dom->base.power_on = meson_secure_pwrc_on; @@ -212,6 +227,15 @@ static int meson_secure_pwrc_probe(struct platform_device *pdev) pwrc->xlate.domains[i] = &dom->base; } + for (i = 0; i < match->count; i++) { + struct meson_secure_pwrc_domain *dom = pwrc->domains; + + if (!match->domains[i].name || match->domains[i].parent == PWRC_NO_PARENT) + continue; + + pm_genpd_add_subdomain(&dom[dom[i].parent].base, &dom[i].base); + } + return of_genpd_add_provider_onecell(pdev->dev.of_node, &pwrc->xlate); } -- cgit v1.2.3-70-g09d2