linux-kernel - [PATCH v9 09/22] clk: mediatek: Add mtk_clk_simple

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Message-ID: <20210524122053.17155-10-chun-jie.chen@mediatek.com>
Date:   Mon, 24 May 2021 20:20:40 +0800
From:   Chun-Jie Chen <chun-jie.chen@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Weiyi Lu <weiyi.lu@...iatek.com>,
        "chun-jie . chen" <chun-jie.chen@...iatek.com>
Subject: [PATCH v9 09/22] clk: mediatek: Add mtk_clk_simple_probe() to simplify clock providers

Most of subsystem clock providers only need to register clock gates
in their probe() function.
To reduce the duplicated code by add a generic function.

Signed-off-by: Weiyi Lu <weiyi.lu@...iatek.com>
Signed-off-by: chun-jie.chen <chun-jie.chen@...iatek.com>
---
 drivers/clk/mediatek/clk-mtk.c | 23 +++++++++++++++++++++++
 drivers/clk/mediatek/clk-mtk.h |  8 ++++++++
 2 files changed, 31 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index cec1c8a27211..67693b7d66b5 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -13,6 +13,7 @@
 #include <linux/clkdev.h>
 #include <linux/mfd/syscon.h>
 #include <linux/device.h>
+#include <linux/of_device.h>
 
 #include "clk-mtk.h"
 #include "clk-gate.h"
@@ -286,3 +287,25 @@ void mtk_clk_register_dividers(const struct mtk_clk_divider *mcds,
 			clk_data->clks[mcd->id] = clk;
 	}
 }
+
+int mtk_clk_simple_probe(struct platform_device *pdev)
+{
+	const struct mtk_clk_desc *mcd;
+	struct clk_onecell_data *clk_data;
+	struct device_node *node = pdev->dev.of_node;
+	int r;
+
+	mcd = of_device_get_match_data(&pdev->dev);
+	if (!mcd)
+		return -EINVAL;
+
+	clk_data = mtk_alloc_clk_data(mcd->num_clks);
+	if (!clk_data)
+		return -ENOMEM;
+
+	r = mtk_clk_register_gates(node, mcd->clks, mcd->num_clks, clk_data);
+	if (r)
+		return r;
+
+	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+}
diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index 31c7cb304508..7de41c3b3206 100644
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -10,6 +10,7 @@
 #include <linux/regmap.h>
 #include <linux/bitops.h>
 #include <linux/clk-provider.h>
+#include <linux/platform_device.h>
 
 struct clk;
 struct clk_onecell_data;
@@ -250,4 +251,11 @@ void mtk_register_reset_controller(struct device_node *np,
 void mtk_register_reset_controller_set_clr(struct device_node *np,
 	unsigned int num_regs, int regofs);
 
+struct mtk_clk_desc {
+	const struct mtk_gate *clks;
+	size_t num_clks;
+};
+
+int mtk_clk_simple_probe(struct platform_device *pdev);
+
 #endif /* __DRV_CLK_MTK_H */
-- 
2.18.0