clk: mediatek: Add MT8186 imgsys clock support

Add MT8186 imgsys clock controllers which provide clock gate
control for image IP blocks.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220409132251.31725-11-chun-jie.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

2 files changed, 70 insertions, 1 deletions

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index cb1087737007..09ede533bb4e 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -73,7 +73,8 @@ obj-$(CONFIG_COMMON_CLK_MT8183_VDECSYS) += clk-mt8183-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT8183_VENCSYS) += clk-mt8183-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o clk-mt8186-topckgen.o clk-mt8186-infra_ao.o \
 				   clk-mt8186-apmixedsys.o clk-mt8186-imp_iic_wrap.o \
-				   clk-mt8186-mfg.o clk-mt8186-mm.o clk-mt8186-wpe.o
+				   clk-mt8186-mfg.o clk-mt8186-mm.o clk-mt8186-wpe.o \
+				   clk-mt8186-img.o
 obj-$(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-img.c b/drivers/clk/mediatek/clk-mt8186-img.c
new file mode 100644
index 000000000000..08a625475aee
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8186-img.c
@@ -0,0 +1,68 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mt8186-clk.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs img_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_IMG(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &img_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate img1_clks[] = {
+	GATE_IMG(CLK_IMG1_LARB9_IMG1, "img1_larb9_img1", "top_img1", 0),
+	GATE_IMG(CLK_IMG1_LARB10_IMG1, "img1_larb10_img1", "top_img1", 1),
+	GATE_IMG(CLK_IMG1_DIP, "img1_dip", "top_img1", 2),
+	GATE_IMG(CLK_IMG1_GALS_IMG1, "img1_gals_img1", "top_img1", 12),
+};
+
+static const struct mtk_gate img2_clks[] = {
+	GATE_IMG(CLK_IMG2_LARB9_IMG2, "img2_larb9_img2", "top_img1", 0),
+	GATE_IMG(CLK_IMG2_LARB10_IMG2, "img2_larb10_img2", "top_img1", 1),
+	GATE_IMG(CLK_IMG2_MFB, "img2_mfb", "top_img1", 6),
+	GATE_IMG(CLK_IMG2_WPE, "img2_wpe", "top_img1", 7),
+	GATE_IMG(CLK_IMG2_MSS, "img2_mss", "top_img1", 8),
+	GATE_IMG(CLK_IMG2_GALS_IMG2, "img2_gals_img2", "top_img1", 12),
+};
+
+static const struct mtk_clk_desc img1_desc = {
+	.clks = img1_clks,
+	.num_clks = ARRAY_SIZE(img1_clks),
+};
+
+static const struct mtk_clk_desc img2_desc = {
+	.clks = img2_clks,
+	.num_clks = ARRAY_SIZE(img2_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8186_img[] = {
+	{
+		.compatible = "mediatek,mt8186-imgsys1",
+		.data = &img1_desc,
+	}, {
+		.compatible = "mediatek,mt8186-imgsys2",
+		.data = &img2_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8186_img_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8186-img",
+		.of_match_table = of_match_clk_mt8186_img,
+	},
+};
+builtin_platform_driver(clk_mt8186_img_drv);