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ARM: OMAP2: Clockdomain: Connect clockdomain code to powerdomain code

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Thie patch adds code to the powerdomain layer to track the
clockdomains associated with each powerdomain.

It also modifies the clockdomain code to register clockdomains
with their corresponding powerdomain when the clockdomain is registered.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Paul Walmsley
2008-08-19 11:08:44 +03:00
committed by Tony Lindgren
parent d459bfe01f
commit 8420bb1363
3 changed files with 156 additions and 0 deletions
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16
arch/arm/plat-omap/include/mach/powerdomain.h
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@@ -44,9 +44,16 @@
*/
#define PWRDM_MAX_MEM_BANKS 4
/*
* Maximum number of clockdomains that can be associated with a powerdomain.
* CORE powerdomain is probably the worst case.
*/
#define PWRDM_MAX_CLKDMS 3
/* XXX A completely arbitrary number. What is reasonable here? */
#define PWRDM_TRANSITION_BAILOUT 100000
struct clockdomain;
struct powerdomain;
/* Encodes dependencies between powerdomains - statically defined */
@@ -98,6 +105,9 @@ struct powerdomain {
/* Possible memory bank pwrstates when pwrdm is ON */
const u8 pwrsts_mem_on[PWRDM_MAX_MEM_BANKS];
/* Clockdomains in this powerdomain */
struct clockdomain *pwrdm_clkdms[PWRDM_MAX_CLKDMS];
struct list_head node;
};
@@ -111,6 +121,12 @@ struct powerdomain *pwrdm_lookup(const char *name);
int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm));
int pwrdm_add_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm);
int pwrdm_del_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm);
int pwrdm_for_each_clkdm(struct powerdomain *pwrdm,
int (*fn)(struct powerdomain *pwrdm,
struct clockdomain *clkdm));
int pwrdm_add_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2);
int pwrdm_del_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2);
int pwrdm_read_wkdep(struct powerdomain *pwrdm1, struct powerdomain *pwrdm2);