Commit efa529b3 authored by xianwei.zhao's avatar xianwei.zhao Committed by Ulf Hansson
Browse files

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: default avatarxianwei.zhao <xianwei.zhao@amlogic.com>
Link: https://lore.kernel.org/r/20230911025223.3433776-3-xianwei.zhao@amlogic.com


[Ulf: Re-based to fit the pmdomain subsystem]
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 278adec9

drivers/pmdomain/amlogic/meson-secure-pwrc.c

+25 −1
Original line number Diff line number Diff line
@@ -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);
@@ -92,6 +95,17 @@ static int meson_secure_pwrc_on(struct generic_pm_domain *domain) 
	.index = PWRC_##__name##_ID,		\

	.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);

}