[RFC 3/3] clk: Add "is_enabled" callback for gated clocks

[Alexander Shiyan]

Signed-off-by: Alexander Shiyan <shc_work at mail.ru>
---
 drivers/clk/clk-gate.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 2dca11c..580720b 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -48,9 +48,17 @@ static void clk_gate_disable(struct clk *clk)
 	writel(val, g->reg);
 }
 
+static int clk_gate_is_enabled(struct clk *clk)
+{
+	struct clk_gate *g = container_of(clk, struct clk_gate, clk);
+
+	return !!(readl(g->reg) & (1 << g->shift));
+}
+
 struct clk_ops clk_gate_ops = {
 	.enable = clk_gate_enable,
 	.disable = clk_gate_disable,
+	.is_enabled = clk_gate_is_enabled,
 };
 
 struct clk *clk_gate(const char *name, const char *parent, void __iomem *reg,
-- 
1.7.3.4