diff options
| -rw-r--r-- | drivers/clk/clk.c | 19 | ||||
| -rw-r--r-- | include/linux/clk-provider.h | 2 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 8a0254a1c303..dd775771a7cc 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -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; diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index df7379da6269..60c51871b04b 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -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 */ |