Added an API to unregister all the clocks defined within a context. This
is helpful in case where the clock is registered through a platform
driver and we want to unregister the clocks during remove callback.
Signed-off-by: Tushar Behera <tushar.b@xxxxxxxxxxx>
---
Changelog:
This is new patch required because of changes to patch 3/3.
drivers/clk/samsung/clk.c | 19 +++++++++++++++++++
drivers/clk/samsung/clk.h | 2 ++
2 files changed, 21 insertions(+)
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c
index 49629c7..b9310b9 100644
--- a/drivers/clk/samsung/clk.c
+++ b/drivers/clk/samsung/clk.c
@@ -83,6 +83,25 @@ struct samsung_clk_provider *__init samsung_clk_init(struct device_node *np,
return ctx;
}
+/* API to remove a clock provider */
+void samsung_clk_exit(struct device_node *np, struct samsung_clk_provider *ctx)
+{
+ int i;
+
+ if (np)
+ of_clk_del_provider(np);
+
+ if (!ctx)
+ return;
+
+ for (i = 0; i < ctx->clk_data.clk_num; i++)
+ if (!IS_ERR(ctx->clk_data.clks[i]))
+ clk_unregister(ctx->clk_data.clks[i]);
+
+ kfree(ctx->clk_data.clks);
+ kfree(ctx);
+}
+
/* add a clock instance to the clock lookup table used for dt based lookup */
void samsung_clk_add_lookup(struct samsung_clk_provider *ctx, struct clk *clk,
unsigned int id)
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index 9693b80..8ecc85a 100644
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -327,6 +327,8 @@ struct samsung_pll_clock {
extern struct samsung_clk_provider *__init samsung_clk_init(
struct device_node *np, void __iomem *base,
unsigned long nr_clks);
+extern void samsung_clk_exit(struct device_node *np,
+ struct samsung_clk_provider *ctx);
extern void __init samsung_clk_of_register_fixed_ext(
struct samsung_clk_provider *ctx,
struct samsung_fixed_rate_clock *fixed_rate_clk,
--
1.7.9.5
--
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