[PATCH v4 18/23] clk: mediatek: clk-mtk: Register MFG notifier in mtk_clk_simple_probe()

[AngeloGioacchino Del Regno]

In preparation for commonizing topckgen probe on various MediaTek SoCs
clock drivers, add the ability to register the MFG MUX notifier in
mtk_clk_simple_probe() by passing a custom notifier register function
pointer, as this function will be slightly different across different
SoCs.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Tested-by: Miles Chen <miles.chen at mediatek.com>
---
 drivers/clk/mediatek/clk-mtk.c | 8 ++++++++
 drivers/clk/mediatek/clk-mtk.h | 3 +++
 2 files changed, 11 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index 281d30d6cb2b..c90c0a6b501b 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -534,6 +534,14 @@ int mtk_clk_simple_probe(struct platform_device *pdev)
 			goto unregister_composites;
 	}
 
+	if (mcd->clk_notifier_func) {
+		struct clk *mfg_mux = clk_data->hws[mcd->mfg_clk_idx]->clk;
+
+		r = mcd->clk_notifier_func(&pdev->dev, mfg_mux);
+		if (r)
+			goto unregister_clks;
+	}
+
 	r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
 	if (r)
 		goto unregister_clks;
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index 1bdaa0acb909..41f4fa3b0c21 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -231,6 +231,9 @@ struct mtk_clk_desc {
 	const struct mtk_clk_rst_desc *rst_desc;
 	spinlock_t *clk_lock;
 	bool shared_io;
+
+	int (*clk_notifier_func)(struct device *dev, struct clk *clk);
+	unsigned int mfg_clk_idx;
 };
 
 int mtk_clk_simple_probe(struct platform_device *pdev);
-- 
2.39.0