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clk: mediatek: gate: Implement unregister API

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The gate clk type within the MediaTek clk driver library only has a
register function, and no corresponding unregister function. This
means there is no way for its users to properly implement cleanup
and removal.

Add a matching unregister function for the gate type clk.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20220208124034.414635-5-wenst@chromium.org
Reviewed-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Chen-Yu Tsai 2022-02-08 20:40:07 +08:00 committed by Stephen Boyd
parent ee488dc918
commit 44dd1414cf
2 changed files with 38 additions and 0 deletions
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35
drivers/clk/mediatek/clk-gate.c
View File

@ -193,6 +193,21 @@ static struct clk *mtk_clk_register_gate(const char *name,
return clk;
}
static void mtk_clk_unregister_gate(struct clk *clk)
{
struct mtk_clk_gate *cg;
struct clk_hw *hw;
hw = __clk_get_hw(clk);
if (!hw)
return;
cg = to_mtk_clk_gate(hw);
clk_unregister(clk);
kfree(cg);
}
int mtk_clk_register_gates_with_dev(struct device_node *node,
const struct mtk_gate *clks, int num,
struct clk_onecell_data *clk_data,
@ -244,4 +259,24 @@ int mtk_clk_register_gates(struct device_node *node,
}
EXPORT_SYMBOL_GPL(mtk_clk_register_gates);
void mtk_clk_unregister_gates(const struct mtk_gate *clks, int num,
struct clk_onecell_data *clk_data)
{
int i;
if (!clk_data)
return;
for (i = num; i > 0; i--) {
const struct mtk_gate *gate = &clks[i - 1];
if (IS_ERR_OR_NULL(clk_data->clks[gate->id]))
continue;
mtk_clk_unregister_gate(clk_data->clks[gate->id]);
clk_data->clks[gate->id] = ERR_PTR(-ENOENT);
}
}
EXPORT_SYMBOL_GPL(mtk_clk_unregister_gates);
MODULE_LICENSE("GPL");

3
drivers/clk/mediatek/clk-gate.h
View File

@ -55,4 +55,7 @@ int mtk_clk_register_gates_with_dev(struct device_node *node,
struct clk_onecell_data *clk_data,
struct device *dev);
void mtk_clk_unregister_gates(const struct mtk_gate *clks, int num,
struct clk_onecell_data *clk_data);
#endif /* __DRV_CLK_GATE_H */