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clkdev: Add clk_hw based registration APIs

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Now that we have a clk registration API that doesn't return
struct clks, we need to have some way to hand out struct clks via
the clk_get() APIs that doesn't involve associating struct clk
pointers with a struct clk_lookup. Luckily, clkdev already
operates on struct clk_hw pointers, except for the registration
facing APIs where it converts struct clk pointers into struct
clk_hw pointers almost immediately.

Let's add clk_hw based registration APIs so that we can skip the
conversion step and provide a way for clk provider drivers to
operate exclusively on clk_hw structs. This way we clearly
split the API between consumers and providers.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Stephen Boyd 2016-02-08 14:59:49 -08:00
parent 0861e5b8cf
commit e4f1b49bda
2 changed files with 70 additions and 0 deletions
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6
include/linux/clkdev.h
View file

@ -15,6 +15,7 @@
#include <asm/clkdev.h>
struct clk;
struct clk_hw;
struct device;
struct clk_lookup {
@ -34,17 +35,22 @@ struct clk_lookup {
struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
const char *dev_fmt, ...) __printf(3, 4);
struct clk_lookup *clkdev_hw_alloc(struct clk_hw *hw, const char *con_id,
const char *dev_fmt, ...) __printf(3, 4);
void clkdev_add(struct clk_lookup *cl);
void clkdev_drop(struct clk_lookup *cl);
struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
const char *dev_fmt, ...) __printf(3, 4);
struct clk_lookup *clkdev_hw_create(struct clk_hw *hw, const char *con_id,
const char *dev_fmt, ...) __printf(3, 4);
void clkdev_add_table(struct clk_lookup *, size_t);
int clk_add_alias(const char *, const char *, const char *, struct device *);
int clk_register_clkdev(struct clk *, const char *, const char *);
int clk_hw_register_clkdev(struct clk_hw *, const char *, const char *);
#ifdef CONFIG_COMMON_CLK
int __clk_get(struct clk *clk);