We lack a way to instantiate a fixed clock while specifying a parent.
This is used in the at91 clock code sync with upstream in a later
commit, so prepare by porting clk_register_fixed_rate.
It's based on the Linux commit of the same name with the difference that
it doesn't use (and thus doesn't require) a struct device_d * as first
parameter.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
drivers/clk/clk-fixed.c | 16 +++++++++++++++-
include/linux/clk.h | 9 ++++++++-
2 files changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/clk-fixed.c b/drivers/clk/clk-fixed.c
index 57bf36b39ecd..411f6fe4736a 100644
--- a/drivers/clk/clk-fixed.c
+++ b/drivers/clk/clk-fixed.c
@@ -37,17 +37,31 @@ static struct clk_ops clk_fixed_ops = {
.is_enabled = clk_is_enabled_always,
};
-struct clk *clk_fixed(const char *name, int rate)
+struct clk *clk_register_fixed_rate(const char *name,
+ const char *parent_name, unsigned long flags,
+ unsigned long rate)
{
struct clk_fixed *fix = xzalloc(sizeof *fix);
+ const char **parent_names = NULL;
int ret;
fix->rate = rate;
fix->clk.ops = &clk_fixed_ops;
fix->clk.name = name;
+ fix->clk.flags = flags;
+
+ if (parent_name) {
+ parent_names = kzalloc(sizeof(const char *), GFP_KERNEL);
+ if (!parent_names)
+ return ERR_PTR(-ENOMEM);
+
+ fix->clk.parent_names = parent_names;
+ fix->clk.num_parents = 1;
+ }
ret = clk_register(&fix->clk);
if (ret) {
+ free(parent_names);
free(fix);
return ERR_PTR(ret);
}
diff --git a/include/linux/clk.h b/include/linux/clk.h
index c3aeea80ddc5..efb0fe4415aa 100644
--- a/include/linux/clk.h
+++ b/include/linux/clk.h
@@ -325,7 +325,14 @@ struct clk_div_table {
unsigned int div;
};
-struct clk *clk_fixed(const char *name, int rate);
+struct clk *clk_register_fixed_rate(const char *name,
+ const char *parent_name, unsigned long flags,
+ unsigned long fixed_rate);
+
+static inline struct clk *clk_fixed(const char *name, int rate)
+{
+ return clk_register_fixed_rate(name, NULL, 0, rate);
+}
struct clk_divider {
struct clk clk;
--
2.26.0.rc2
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