linux-kernel - [PATCH v3 07/15] clk: mediatek: Add MT8186 mfgsys clock support

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Date:   Fri, 11 Mar 2022 19:42:21 +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>,
        Chun-Jie Chen <chun-jie.chen@...iatek.com>
Subject: [PATCH v3 07/15] clk: mediatek: Add MT8186 mfgsys clock support

Add MT8186 mfg clock controller which provides clock gate
control for GPU.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@...iatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/clk/mediatek/Makefile         |  3 +-
 drivers/clk/mediatek/clk-mt8186-mfg.c | 48 +++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8186-mfg.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 3510e8a0ecac..86e4f4d61688 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -72,7 +72,8 @@ obj-$(CONFIG_COMMON_CLK_MT8183_MMSYS) += clk-mt8183-mm.o
 obj-$(CONFIG_COMMON_CLK_MT8183_VDECSYS) += clk-mt8183-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT8183_VENCSYS) += clk-mt8183-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o clk-mt8186-topckgen.o clk-mt8186-infra_ao.o \
-				   clk-mt8186-apmixedsys.o clk-mt8186-imp_iic_wrap.o
+				   clk-mt8186-apmixedsys.o clk-mt8186-imp_iic_wrap.o \
+				   clk-mt8186-mfg.o
 obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192.o
 obj-$(CONFIG_COMMON_CLK_MT8192_AUDSYS) += clk-mt8192-aud.o
 obj-$(CONFIG_COMMON_CLK_MT8192_CAMSYS) += clk-mt8192-cam.o
diff --git a/drivers/clk/mediatek/clk-mt8186-mfg.c b/drivers/clk/mediatek/clk-mt8186-mfg.c
new file mode 100644
index 000000000000..8ecb489a7fe0
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8186-mfg.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@...iatek.com>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+#include <dt-bindings/clock/mt8186-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+static const struct mtk_gate_regs mfg_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_MFG(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &mfg_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate mfg_clks[] = {
+	GATE_MFG(CLK_MFG_BG3D, "mfg_bg3d", "top_mfg", 0),
+};
+
+static const struct mtk_clk_desc mfg_desc = {
+	.clks = mfg_clks,
+	.num_clks = ARRAY_SIZE(mfg_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8186_mfg[] = {
+	{
+		.compatible = "mediatek,mt8186-mfgsys",
+		.data = &mfg_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8186_mfg_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8186-mfg",
+		.of_match_table = of_match_clk_mt8186_mfg,
+	},
+};
+builtin_platform_driver(clk_mt8186_mfg_drv);
-- 
2.18.0