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ARM: OMAP2+: pm33xx-core: Extend platform_data ops for cpuidle

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In order for am335x and am437x to properly enter deeper c-states in
cpuidle they must always call into the sleep33/43xx suspend code and
also sometimes invoke the wkup_m3_ipc driver. These are both controlled
by the pm33xx module so we must provide a method for the platform code
to call back into the module when it is available as the core cpuidle
ops that are invoked by the cpuidle-arm driver must remain as built in.

Extend the init platform op to take an idle function as an argument so
that we can use this to call into the pm33xx module for c-states that
need it. Also add a deinit op so we can unregister this idle function
from the PM core when the pm33xx module gets unloaded.

Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Dave Gerlach
2019-12-12 21:07:53 -06:00
committed by Tony Lindgren
parent 06ee7a950b
commit 65880ab160
3 changed files with 18 additions and 7 deletions
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3
include/linux/platform_data/pm33xx.h
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@@ -46,7 +46,8 @@ struct am33xx_pm_sram_addr {
};
struct am33xx_pm_platform_data {
int (*init)(void);
int (*init)(int (*idle)(u32 wfi_flags));
int (*deinit)(void);
int (*soc_suspend)(unsigned int state, int (*fn)(unsigned long),
unsigned long args);
int (*cpu_suspend)(int (*fn)(unsigned long), unsigned long args);