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Commit 43536548 authored by Keerthy's avatar Keerthy Committed by Tero Kristo
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clk: clk: Add clk_gate_restore_context function 



The clock gate restore context function enables or disables
the gate clocks based on the enable_count. This is done in cases
where the clock context is lost and based on the enable_count
the clock either needs to be enabled/disabled.

Signed-off-by: default avatarKeerthy <j-keerthy@ti.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
parent 8b95d1ce

drivers/clk/clk.c

+19 −0
Original line number Diff line number Diff line
@@ -923,6 +923,25 @@ static int clk_core_enable_lock(struct clk_core *core) 
	return ret;

}



/**

 * clk_gate_restore_context - restore context for poweroff

 * @hw: the clk_hw pointer of clock whose state is to be restored

 *

 * The clock gate restore context function enables or disables

 * the gate clocks based on the enable_count. This is done in cases

 * where the clock context is lost and based on the enable_count

 * the clock either needs to be enabled/disabled. This

 * helps restore the state of gate clocks.

 */

void clk_gate_restore_context(struct clk_hw *hw)

{

	if (hw->clk->core->enable_count)

		hw->clk->core->ops->enable(hw);

	else

		hw->clk->core->ops->disable(hw);

}

EXPORT_SYMBOL_GPL(clk_gate_restore_context);



static int _clk_save_context(struct clk_core *clk)

{

	struct clk_core *child;

include/linux/clk-provider.h

+2 −0
Original line number Diff line number Diff line
@@ -1018,5 +1018,7 @@ static inline void clk_writel(u32 val, u32 __iomem *reg) 


#endif	/* platform dependent I/O accessors */



void clk_gate_restore_context(struct clk_hw *hw);



#endif /* CONFIG_COMMON_CLK */

#endif /* CLK_PROVIDER_H */