From: dkl <dkl@rock-chips.com>
Date: Wed, 14 May 2014 05:59:16 +0000 (+0800)
Subject: clk: pd: rockchip: add notify when clk_pd_prepare/unprepare
X-Git-Tag: firefly_0821_release~5284
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b4cae747329416761a02ff484708b0060f418e38;p=firefly-linux-kernel-4.4.55.git

clk: pd: rockchip: add notify when clk_pd_prepare/unprepare
---

diff --git a/drivers/clk/rockchip/clk-pd.c b/drivers/clk/rockchip/clk-pd.c
index 6a2a79da50b4..cf95ade9c6eb 100644
--- a/drivers/clk/rockchip/clk-pd.c
+++ b/drivers/clk/rockchip/clk-pd.c
@@ -142,7 +142,21 @@ static int clk_pd_is_enabled(struct clk_hw *hw)
 	return rockchip_pmu_ops.power_domain_is_on(pd->id);
 }
 
+static int clk_pd_prepare(struct clk_hw *hw)
+{
+	__clk_pd_notify(hw->clk, RK_CLK_PD_PREPARE);
+
+	return 0;
+}
+
+static void clk_pd_unprepare(struct clk_hw *hw)
+{
+	__clk_pd_notify(hw->clk, RK_CLK_PD_UNPREPARE);
+}
+
 const struct clk_ops clk_pd_ops = {
+	.prepare = clk_pd_prepare,
+	.unprepare = clk_pd_unprepare,
 	.enable = clk_pd_enable,
 	.disable = clk_pd_disable,
 	.is_enabled = clk_pd_is_enabled,
@@ -165,6 +179,8 @@ static void clk_pd_virt_disable(struct clk_hw *hw)
 }
 
 const struct clk_ops clk_pd_virt_ops = {
+	.prepare = clk_pd_prepare,
+	.unprepare = clk_pd_unprepare,
 	.enable = clk_pd_virt_enable,
 	.disable = clk_pd_virt_disable,
 };
diff --git a/drivers/clk/rockchip/clk-pd.h b/drivers/clk/rockchip/clk-pd.h
index 650fc04e7472..9983bdd0ea4d 100644
--- a/drivers/clk/rockchip/clk-pd.h
+++ b/drivers/clk/rockchip/clk-pd.h
@@ -23,6 +23,9 @@ struct clk *rk_clk_register_pd(struct device *dev, const char *name,
 #define RK_CLK_PD_POST_ENABLE			BIT(1)
 #define RK_CLK_PD_PRE_DISABLE			BIT(2)
 #define RK_CLK_PD_POST_DISABLE			BIT(3)
+#define RK_CLK_PD_PREPARE			BIT(4)
+#define RK_CLK_PD_UNPREPARE			BIT(5)
+
 
 struct clk_pd_notifier {
 	struct clk			*clk;