You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.6 KiB
Diff
85 lines
2.6 KiB
Diff
From df2373ca941741f3f66750241a048ad4e2ff2c91 Mon Sep 17 00:00:00 2001
|
|
From: Zhao Qiang <qiang.zhao@nxp.com>
|
|
Date: Thu, 24 Nov 2016 11:47:45 +0800
|
|
Subject: [PATCH 236/238] clk: add API of clks
|
|
|
|
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
|
|
---
|
|
drivers/clk/clk.c | 19 +++++++++++++++++++
|
|
include/linux/clk-provider.h | 1 +
|
|
include/linux/clk.h | 9 +++++++++
|
|
3 files changed, 29 insertions(+)
|
|
|
|
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
|
|
index f13c3f4..0f6bcf5 100644
|
|
--- a/drivers/clk/clk.c
|
|
+++ b/drivers/clk/clk.c
|
|
@@ -359,6 +359,19 @@ static struct clk_core *clk_core_get_parent_by_index(struct clk_core *core,
|
|
return core->parents[index];
|
|
}
|
|
|
|
+struct clk *clk_get_parent_by_index(struct clk *clk, u8 index)
|
|
+{
|
|
+ struct clk_core *parent;
|
|
+
|
|
+ if (!clk)
|
|
+ return NULL;
|
|
+
|
|
+ parent = clk_core_get_parent_by_index(clk->core, index);
|
|
+
|
|
+ return !parent ? NULL : parent->hw->clk;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(clk_get_parent_by_index);
|
|
+
|
|
struct clk_hw *
|
|
clk_hw_get_parent_by_index(const struct clk_hw *hw, unsigned int index)
|
|
{
|
|
@@ -2033,6 +2046,12 @@ static const struct file_operations clk_summary_fops = {
|
|
.release = single_release,
|
|
};
|
|
|
|
+unsigned int clk_get_num_parents(struct clk *clk)
|
|
+{
|
|
+ return !clk ? 0 : clk->core->num_parents;
|
|
+}
|
|
+EXPORT_SYMBOL_GPL(clk_get_num_parents);
|
|
+
|
|
static void clk_dump_one(struct seq_file *s, struct clk_core *c, int level)
|
|
{
|
|
if (!c)
|
|
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
|
|
index 7cd0171..77dfd61 100644
|
|
--- a/include/linux/clk-provider.h
|
|
+++ b/include/linux/clk-provider.h
|
|
@@ -650,6 +650,7 @@ unsigned int clk_hw_get_num_parents(const struct clk_hw *hw);
|
|
struct clk_hw *clk_hw_get_parent(const struct clk_hw *hw);
|
|
struct clk_hw *clk_hw_get_parent_by_index(const struct clk_hw *hw,
|
|
unsigned int index);
|
|
+struct clk *clk_get_parent_by_index(struct clk *clk, u8 index);
|
|
unsigned int __clk_get_enable_count(struct clk *clk);
|
|
unsigned long clk_hw_get_rate(const struct clk_hw *hw);
|
|
unsigned long __clk_get_flags(struct clk *clk);
|
|
diff --git a/include/linux/clk.h b/include/linux/clk.h
|
|
index 0df4a51..1df90e3 100644
|
|
--- a/include/linux/clk.h
|
|
+++ b/include/linux/clk.h
|
|
@@ -392,6 +392,15 @@ int clk_set_parent(struct clk *clk, struct clk *parent);
|
|
struct clk *clk_get_parent(struct clk *clk);
|
|
|
|
/**
|
|
+ * clk_get_num_parents - get number of possible parents
|
|
+ * @clk: clock source
|
|
+ *
|
|
+ * Returns the number of possible parents of this clock,
|
|
+ * which can then be enumerated using clk_get_parent_by_index().
|
|
+ */
|
|
+unsigned int clk_get_num_parents(struct clk *clk);
|
|
+
|
|
+/**
|
|
* clk_get_sys - get a clock based upon the device name
|
|
* @dev_id: device name
|
|
* @con_id: connection ID
|
|
--
|
|
1.7.9.5
|
|
|