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| author | Paul Walmsley <paul@pwsan.com> | 2013-01-26 08:58:16 +0100 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2013-01-29 22:59:57 +0100 |
| commit | 3a090284056954f382612da42ebe9f3147403ef5 (patch) | |
| tree | 6e9627679444b04614577cf55ad77f8e17aed0b9 /arch/arm/mach-omap2/powerdomain.h | |
| parent | ARM: OMAP2+: PM/powerdomain: move omap_set_pwrdm_state() to powerdomain code (diff) | |
| download | linux-3a090284056954f382612da42ebe9f3147403ef5.tar.xz linux-3a090284056954f382612da42ebe9f3147403ef5.zip | |
ARM: OMAP2+: powerdomain/clockdomain: add a per-powerdomain spinlock
Add a per-powerdomain spinlock. Use that instead of the clockdomain
spinlock. Add pwrdm_lock()/pwrdm_unlock() functions to allow other
code to acquire or release the powerdomain spinlock without reaching
directly into the struct powerdomain.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Jean Pihet <jean.pihet@newoldbits.com>
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.h')
| -rw-r--r-- | arch/arm/mach-omap2/powerdomain.h | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h index 93e7df824650..909cc5c1c23a 100644 --- a/arch/arm/mach-omap2/powerdomain.h +++ b/arch/arm/mach-omap2/powerdomain.h @@ -19,8 +19,7 @@ #include <linux/types.h> #include <linux/list.h> - -#include <linux/atomic.h> +#include <linux/spinlock.h> #include "voltage.h" @@ -103,6 +102,8 @@ struct powerdomain; * @state_counter: * @timer: * @state_timer: + * @_lock: spinlock used to serialize powerdomain and some clockdomain ops + * @_lock_flags: stored flags when @_lock is taken * * @prcm_partition possible values are defined in mach-omap2/prcm44xx.h. */ @@ -127,7 +128,8 @@ struct powerdomain { unsigned state_counter[PWRDM_MAX_PWRSTS]; unsigned ret_logic_off_counter; unsigned ret_mem_off_counter[PWRDM_MAX_MEM_BANKS]; - + spinlock_t _lock; + unsigned long _lock_flags; const u8 pwrstctrl_offs; const u8 pwrstst_offs; const u32 logicretstate_mask; @@ -235,6 +237,7 @@ int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm); int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm); bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm); +int pwrdm_state_switch_nolock(struct powerdomain *pwrdm); int pwrdm_state_switch(struct powerdomain *pwrdm); int pwrdm_pre_transition(struct powerdomain *pwrdm); int pwrdm_post_transition(struct powerdomain *pwrdm); @@ -262,5 +265,7 @@ extern u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank); extern struct powerdomain wkup_omap2_pwrdm; extern struct powerdomain gfx_omap2_pwrdm; +extern void pwrdm_lock(struct powerdomain *pwrdm); +extern void pwrdm_unlock(struct powerdomain *pwrdm); #endif |