[PATCH v5 09/24] clk: mediatek: Add mtk_clk_simple_probe() to simplify clock providers

From: Weiyi Lu <weiyi.lu@mediatek.com>
To: Matthias Brugger <matthias.bgg@gmail.com>,
	Rob Herring <robh@kernel.org>, Stephen Boyd <sboyd@kernel.org>,
	Nicolas Boichat <drinkcat@chromium.org>
Cc: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-mediatek@lists.infradead.org>, <linux-clk@vger.kernel.org>,
	<srv_heupstream@mediatek.com>, Weiyi Lu <weiyi.lu@mediatek.com>,
	Yingjoe Chen <yingjoe.chen@mediatek.com>
Subject: [PATCH v5 09/24] clk: mediatek: Add mtk_clk_simple_probe() to simplify clock providers
Date: Mon, 9 Nov 2020 10:03:34 +0800	[thread overview]
Message-ID: <1604887429-29445-10-git-send-email-weiyi.lu@mediatek.com> (raw)
In-Reply-To: <1604887429-29445-1-git-send-email-weiyi.lu@mediatek.com>

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@mediatek.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 cec1c8a..67693b7 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 c580663..2f61fba 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 */
-- 
1.8.1.1.dirty
