diff options
| author | Karan Jhavar <kjhavar@nvidia.com> | 2011-05-16 17:00:43 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2012-03-22 23:28:00 -0700 |
| commit | ef2d9d41b4254d13802f9fce8ce10b12640bd0a8 (patch) | |
| tree | 485e9474b8def07f80cc44d3e84b96002fb6526d /arch/arm/mach-tegra/include/mach/powergate.h | |
| parent | 42dfb57c2b9cd6bf6d8284e3da184e20ff1d21a9 (diff) | |
ARM: tegra: power: Refactored kernel powergate code
This change provides a centralized location for powergating modules.
It would take care of switching on/off clocks while un-powergating/
powergating modules respectively.
Bug: 814267
Original-Change-Id: Ic80dc517f634c29085c8e089bdaa32c6fd742710
Reviewed-on: http://git-master/r/31776
Reviewed-by: Niket Sirsi <nsirsi@nvidia.com>
Tested-by: Niket Sirsi <nsirsi@nvidia.com>
Rebase-Id: Re0c233ed4bacc27feb7b210cddc6ff3e487c528f
Diffstat (limited to 'arch/arm/mach-tegra/include/mach/powergate.h')
| -rw-r--r-- | arch/arm/mach-tegra/include/mach/powergate.h | 37 |
1 files changed, 32 insertions, 5 deletions
diff --git a/arch/arm/mach-tegra/include/mach/powergate.h b/arch/arm/mach-tegra/include/mach/powergate.h index a16cc9edd184..53b0f92b538c 100644 --- a/arch/arm/mach-tegra/include/mach/powergate.h +++ b/arch/arm/mach-tegra/include/mach/powergate.h @@ -47,12 +47,39 @@ struct clk; -int tegra_powergate_power_on(int id); -int tegra_powergate_power_off(int id); int tegra_powergate_remove_clamping(int id); -const char* tegra_powergate_get_name(int id); +const char *tegra_powergate_get_name(int id); -/* Must be called with clk disabled, and returns with clk enabled */ -int tegra_powergate_sequence_power_up(int id, struct clk *clk); +/* + * Functions to powergate/un-powergate partitions. + * Handle clk management in the API's. + * + * tegra_powergate_partition_with_clk_off() can be called with + * clks ON. It disables all required clks. + * + * tegra_unpowergate_partition_with_clk_on() can be called with + * all required clks OFF. Returns with all clks ON. + * + * Warning: In general drivers should take care of the module + * clks and use tegra_powergate_partition() & + * tegra_unpowergate_partition() API's. + */ +int tegra_powergate_partition_with_clk_off(int id); +int tegra_unpowergate_partition_with_clk_on(int id); + +/* + * Functions to powergate un-powergate partitions. + * Drivers are responsible for clk enable-disable + * + * tegra_powergate_partition() should be called with all + * required clks OFF. Drivers should disable clks BEFORE + * calling this fucntion + * + * tegra_unpowergate_partition should be called with all + * required clks OFF. Returns with all clks OFF. Drivers + * should enable all clks AFTER this function + */ +int tegra_powergate_partition(int id); +int tegra_unpowergate_partition(int id); #endif /* _MACH_TEGRA_POWERGATE_H_ */ |