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clk: Store clk_core for clk_rate_request

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The struct clk_rate_request is meant to store the context around a rate
request such as the parent, boundaries, and so on.

However, it doesn't store the clock the rate request is submitted to,
which makes debugging difficult.

Let's add a pointer to the relevant clk_core instance in order to
improve the debugging of rate requests in a subsequent patch.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20221018-clk-rate-request-tracing-v2-1-5170b363c413@cerno.tech
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Maxime Ripard 2022-10-26 15:46:58 +02:00 committed by Stephen Boyd
parent 9abf2313ad
commit ef13f8b647
2 changed files with 3 additions and 0 deletions
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1
drivers/clk/clk.c
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@ -1464,6 +1464,7 @@ static void clk_core_init_rate_req(struct clk_core * const core,
memset(req, 0, sizeof(*req));
req->core = core;
req->rate = rate;
clk_core_get_boundaries(core, &req->min_rate, &req->max_rate);

2
include/linux/clk-provider.h
View file

@ -44,6 +44,7 @@ struct dentry;
*
* Should be initialized by calling clk_hw_init_rate_request().
*
* @core: Pointer to the struct clk_core affected by this request
* @rate: Requested clock rate. This field will be adjusted by
* clock drivers according to hardware capabilities.
* @min_rate: Minimum rate imposed by clk users.
@ -55,6 +56,7 @@ struct dentry;
*
*/
struct clk_rate_request {
struct clk_core *core;
unsigned long rate;
unsigned long min_rate;
unsigned long max_rate;