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: Keerthy <j-keerthy@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>

1 files changed, 19 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;