88ca6390ea
Refresh patches on all 4.4 supported platforms. Compile & run tested: lantiq/xrx200 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
75 lines
2.3 KiB
Diff
75 lines
2.3 KiB
Diff
From df2373ca941741f3f66750241a048ad4e2ff2c91 Mon Sep 17 00:00:00 2001
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From: Zhao Qiang <qiang.zhao@nxp.com>
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Date: Thu, 24 Nov 2016 11:47:45 +0800
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Subject: [PATCH 236/238] clk: add API of clks
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Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
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---
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drivers/clk/clk.c | 19 +++++++++++++++++++
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include/linux/clk-provider.h | 1 +
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include/linux/clk.h | 9 +++++++++
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3 files changed, 29 insertions(+)
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--- a/drivers/clk/clk.c
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+++ b/drivers/clk/clk.c
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@@ -359,6 +359,19 @@ static struct clk_core *clk_core_get_par
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return core->parents[index];
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}
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+struct clk *clk_get_parent_by_index(struct clk *clk, u8 index)
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+{
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+ struct clk_core *parent;
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+
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+ if (!clk)
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+ return NULL;
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+
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+ parent = clk_core_get_parent_by_index(clk->core, index);
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+
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+ return !parent ? NULL : parent->hw->clk;
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+}
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+EXPORT_SYMBOL_GPL(clk_get_parent_by_index);
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+
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struct clk_hw *
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clk_hw_get_parent_by_index(const struct clk_hw *hw, unsigned int index)
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{
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@@ -2033,6 +2046,12 @@ static const struct file_operations clk_
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.release = single_release,
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};
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+unsigned int clk_get_num_parents(struct clk *clk)
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+{
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+ return !clk ? 0 : clk->core->num_parents;
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+}
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+EXPORT_SYMBOL_GPL(clk_get_num_parents);
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+
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static void clk_dump_one(struct seq_file *s, struct clk_core *c, int level)
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{
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if (!c)
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--- a/include/linux/clk-provider.h
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+++ b/include/linux/clk-provider.h
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@@ -656,6 +656,7 @@ unsigned int clk_hw_get_num_parents(cons
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struct clk_hw *clk_hw_get_parent(const struct clk_hw *hw);
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struct clk_hw *clk_hw_get_parent_by_index(const struct clk_hw *hw,
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unsigned int index);
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+struct clk *clk_get_parent_by_index(struct clk *clk, u8 index);
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unsigned int __clk_get_enable_count(struct clk *clk);
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unsigned long clk_hw_get_rate(const struct clk_hw *hw);
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unsigned long __clk_get_flags(struct clk *clk);
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--- a/include/linux/clk.h
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+++ b/include/linux/clk.h
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@@ -392,6 +392,15 @@ int clk_set_parent(struct clk *clk, stru
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struct clk *clk_get_parent(struct clk *clk);
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/**
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+ * clk_get_num_parents - get number of possible parents
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+ * @clk: clock source
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+ *
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+ * Returns the number of possible parents of this clock,
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+ * which can then be enumerated using clk_get_parent_by_index().
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+ */
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+unsigned int clk_get_num_parents(struct clk *clk);
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+
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+/**
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* clk_get_sys - get a clock based upon the device name
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* @dev_id: device name
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* @con_id: connection ID
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