[PATCH V3 RESEND 2/6] genpd: amlogic: add driver to support power parent node
Xianwei Zhao
xianwei.zhao at amlogic.com
Sun Sep 10 19:52:19 PDT 2023
From: "xianwei.zhao" <xianwei.zhao at amlogic.com>
Some power domains depends on other domains, Such as Amlogic T7 SoC.
Add parent node to support this case.
Signed-off-by: xianwei.zhao <xianwei.zhao at amlogic.com>
---
V2 -> V3: modify subject "genpd: amlogic: "
define PWRC_NO_PARENT UINT_MAX
V1 -> V2: None
---
drivers/genpd/amlogic/meson-secure-pwrc.c | 26 ++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)
diff --git a/drivers/genpd/amlogic/meson-secure-pwrc.c b/drivers/genpd/amlogic/meson-secure-pwrc.c
index 5ac2437ab8ad..ecada537b19c 100644
--- a/drivers/genpd/amlogic/meson-secure-pwrc.c
+++ b/drivers/genpd/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);
}
--
2.37.1
More information about the linux-amlogic
mailing list