linux-kernel - [PATCH] clk: Register clkdev after setup of fixed-rate and fixed-factor clocks

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Date:   Tue, 11 Oct 2016 19:13:44 +0800
From:   Orson Zhai <orson.zhai@...eadtrum.com>
To:     <mturquette@...libre.com>, <sboyd@...eaurora.org>
CC:     <baolin.wang@...eadtrum.com>, <xiaolong.zhang@...eadtrum.com>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <ben.li@...eadturm.com>, Orson Zhai <orson.zhai@...eadtrum.com>
Subject: [PATCH] clk: Register clkdev after setup of fixed-rate and fixed-factor clocks

From: Xiaolong Zhang <xiaolong.zhang@...eadtrum.com>

When common kernel setups fixed clock, of_clk_provider will be registerred.
But there is no clkdev being registerred at the same time. This will make
it difficult to get the clock by using clk_get(NULL, con_id).

Add clkdev register for fixed-rate and fixed-factor clock and ignore
the error if any.

Signed-off-by: Xiaolong Zhang <xiaolong.zhang@...eadtrum.com>
Signed-off-by: Orson Zhai <orson.zhai@...eadtrum.com>
---
 drivers/clk/clk-fixed-factor.c | 5 +++++
 drivers/clk/clk-fixed-rate.c   | 5 +++++
 2 files changed, 10 insertions(+)

diff --git a/drivers/clk/clk-fixed-factor.c b/drivers/clk/clk-fixed-factor.c
index a5d402d..b81656a 100644
--- a/drivers/clk/clk-fixed-factor.c
+++ b/drivers/clk/clk-fixed-factor.c
@@ -9,6 +9,7 @@
  */
 #include <linux/module.h>
 #include <linux/clk-provider.h>
+#include <linux/clkdev.h>
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/of.h>
@@ -186,6 +187,10 @@ static struct clk *_of_fixed_factor_clk_setup(struct device_node *node)
 		return ERR_PTR(ret);
 	}
 
+#ifdef CONFIG_CLKDEV_LOOKUP
+	clk_register_clkdev(clk, clk_name, 0);
+#endif
+
 	return clk;
 }
 
diff --git a/drivers/clk/clk-fixed-rate.c b/drivers/clk/clk-fixed-rate.c
index b5c46b3..d42c8e7 100644
--- a/drivers/clk/clk-fixed-rate.c
+++ b/drivers/clk/clk-fixed-rate.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/clk-provider.h>
+#include <linux/clkdev.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/io.h>
@@ -184,6 +185,10 @@ static struct clk *_of_fixed_clk_setup(struct device_node *node)
 		return ERR_PTR(ret);
 	}
 
+#ifdef CONFIG_CLKDEV_LOOKUP
+	clk_register_clkdev(clk, clk_name, 0);
+#endif
+
 	return clk;
 }
 
-- 
1.9.1