linux-kernel - [PATCHv2 5/6] clk: sunxi: make use of of_clk_parent

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Date:	Mon, 6 Jul 2015 22:59:05 -0500
From:	<dinguyen@...nsource.altera.com>
To:	<sboyd@...eaurora.org>, <mturquette@...aro.org>
CC:	<dinh.linux@...il.com>, <linux-clk@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Emilio López <emilio@...pez.com.ar>
Subject: [PATCHv2 5/6] clk: sunxi: make use of of_clk_parent_fill helper function

From: Dinh Nguyen <dinguyen@...nsource.altera.com>

Use of_clk_parent_fill to fill in the parent clock names' array.

Signed-off-by: Dinh Nguyen <dinguyen@...nsource.altera.com>
Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc: "Emilio López" <emilio@...pez.com.ar>
---
v2: Add if (of_clk_parent_fill(node, parents, 2) != 2) to clk-a20-gmac.c
---
 drivers/clk/sunxi/clk-a20-gmac.c    |    4 +---
 drivers/clk/sunxi/clk-factors.c     |    4 +---
 drivers/clk/sunxi/clk-sun6i-ar100.c |    3 +--
 drivers/clk/sunxi/clk-sunxi.c       |   10 ++--------
 4 files changed, 5 insertions(+), 16 deletions(-)

diff --git a/drivers/clk/sunxi/clk-a20-gmac.c b/drivers/clk/sunxi/clk-a20-gmac.c
index 0dcf4f2..1611b03 100644
--- a/drivers/clk/sunxi/clk-a20-gmac.c
+++ b/drivers/clk/sunxi/clk-a20-gmac.c
@@ -80,9 +80,7 @@ static void __init sun7i_a20_gmac_clk_setup(struct device_node *node)
 		goto free_mux;
 
 	/* gmac clock requires exactly 2 parents */
-	parents[0] = of_clk_get_parent_name(node, 0);
-	parents[1] = of_clk_get_parent_name(node, 1);
-	if (!parents[0] || !parents[1])
+	if (of_clk_parent_fill(node, parents, 2) != 2)
 		goto free_gate;
 
 	reg = of_iomap(node, 0);
diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c
index 8c20190..2589457 100644
--- a/drivers/clk/sunxi/clk-factors.c
+++ b/drivers/clk/sunxi/clk-factors.c
@@ -174,9 +174,7 @@ struct clk *sunxi_factors_register(struct device_node *node,
 	int i = 0;
 
 	/* if we have a mux, we will have >1 parents */
-	while (i < FACTORS_MAX_PARENTS &&
-	       (parents[i] = of_clk_get_parent_name(node, i)) != NULL)
-		i++;
+	i = of_clk_parent_fill(node, parents, FACTORS_MAX_PARENTS);
 
 	/*
 	 * some factor clocks, such as pll5 and pll6, may have multiple
diff --git a/drivers/clk/sunxi/clk-sun6i-ar100.c b/drivers/clk/sunxi/clk-sun6i-ar100.c
index 63cf149..6f229ff 100644
--- a/drivers/clk/sunxi/clk-sun6i-ar100.c
+++ b/drivers/clk/sunxi/clk-sun6i-ar100.c
@@ -195,8 +195,7 @@ static int sun6i_a31_ar100_clk_probe(struct platform_device *pdev)
 	if (nparents > SUN6I_AR100_MAX_PARENTS)
 		nparents = SUN6I_AR100_MAX_PARENTS;
 
-	for (i = 0; i < nparents; i++)
-		parents[i] = of_clk_get_parent_name(np, i);
+	of_clk_parent_fill(np, parents, nparents);
 
 	of_property_read_string(np, "clock-output-names", &clk_name);
 
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 9a82f17..eed66f8 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c
@@ -202,10 +202,7 @@ static void __init sun6i_ahb1_clk_setup(struct device_node *node)
 		return;
 
 	/* we have a mux, we will have >1 parents */
-	while (i < SUN6I_AHB1_MAX_PARENTS &&
-	       (parents[i] = of_clk_get_parent_name(node, i)) != NULL)
-		i++;
-
+	of_clk_parent_fill(node, parents, SUN6I_AHB1_MAX_PARENTS);
 	of_property_read_string(node, "clock-output-names", &clk_name);
 
 	ahb1 = kzalloc(sizeof(struct sun6i_ahb1_clk), GFP_KERNEL);
@@ -790,10 +787,7 @@ static void __init sunxi_mux_clk_setup(struct device_node *node,
 
 	reg = of_iomap(node, 0);
 
-	while (i < SUNXI_MAX_PARENTS &&
-	       (parents[i] = of_clk_get_parent_name(node, i)) != NULL)
-		i++;
-
+	of_clk_parent_fill(node, parents, SUNXI_MAX_PARENTS);
 	of_property_read_string(node, "clock-output-names", &clk_name);
 
 	clk = clk_register_mux(NULL, clk_name, parents, i,
-- 
1.7.9.5

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