[PATCH v4 13/15] clk: mediatek: Add MT8186 camsys clock support

[Chun-Jie Chen]

Add MT8186 camsys clock controllers which provide clock gate
control for camera IP blocks.

Signed-off-by: Chun-Jie Chen <chun-jie.chen at mediatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Reviewed-by: Miles Chen <miles.chen at mediatek.com>
---
 drivers/clk/mediatek/Makefile         |  3 +-
 drivers/clk/mediatek/clk-mt8186-cam.c | 90 +++++++++++++++++++++++++++
 2 files changed, 92 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8186-cam.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 28aefad8042e..3ad27f94eeef 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -74,7 +74,8 @@ 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-img.o clk-mt8186-vdec.o clk-mt8186-venc.o
+				   clk-mt8186-img.o clk-mt8186-vdec.o clk-mt8186-venc.o \
+				   clk-mt8186-cam.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-cam.c b/drivers/clk/mediatek/clk-mt8186-cam.c
new file mode 100644
index 000000000000..9ec345a2ce66
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8186-cam.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen at 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 cam_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_CAM(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &cam_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate cam_clks[] = {
+	GATE_CAM(CLK_CAM_LARB13, "cam_larb13", "top_cam", 0),
+	GATE_CAM(CLK_CAM_DFP_VAD, "cam_dfp_vad", "top_cam", 1),
+	GATE_CAM(CLK_CAM_LARB14, "cam_larb14", "top_cam", 2),
+	GATE_CAM(CLK_CAM, "cam", "top_cam", 6),
+	GATE_CAM(CLK_CAMTG, "camtg", "top_cam", 7),
+	GATE_CAM(CLK_CAM_SENINF, "cam_seninf", "top_cam", 8),
+	GATE_CAM(CLK_CAMSV1, "camsv1", "top_cam", 10),
+	GATE_CAM(CLK_CAMSV2, "camsv2", "top_cam", 11),
+	GATE_CAM(CLK_CAMSV3, "camsv3", "top_cam", 12),
+	GATE_CAM(CLK_CAM_CCU0, "cam_ccu0", "top_cam", 13),
+	GATE_CAM(CLK_CAM_CCU1, "cam_ccu1", "top_cam", 14),
+	GATE_CAM(CLK_CAM_MRAW0, "cam_mraw0", "top_cam", 15),
+	GATE_CAM(CLK_CAM_FAKE_ENG, "cam_fake_eng", "top_cam", 17),
+	GATE_CAM(CLK_CAM_CCU_GALS, "cam_ccu_gals", "top_cam", 18),
+	GATE_CAM(CLK_CAM2MM_GALS, "cam2mm_gals", "top_cam", 19),
+};
+
+static const struct mtk_gate cam_rawa_clks[] = {
+	GATE_CAM(CLK_CAM_RAWA_LARBX_RAWA, "cam_rawa_larbx_rawa", "top_cam", 0),
+	GATE_CAM(CLK_CAM_RAWA, "cam_rawa", "top_cam", 1),
+	GATE_CAM(CLK_CAM_RAWA_CAMTG_RAWA, "cam_rawa_camtg_rawa", "top_cam", 2),
+};
+
+static const struct mtk_gate cam_rawb_clks[] = {
+	GATE_CAM(CLK_CAM_RAWB_LARBX_RAWB, "cam_rawb_larbx_rawb", "top_cam", 0),
+	GATE_CAM(CLK_CAM_RAWB, "cam_rawb", "top_cam", 1),
+	GATE_CAM(CLK_CAM_RAWB_CAMTG_RAWB, "cam_rawb_camtg_rawb", "top_cam", 2),
+};
+
+static const struct mtk_clk_desc cam_desc = {
+	.clks = cam_clks,
+	.num_clks = ARRAY_SIZE(cam_clks),
+};
+
+static const struct mtk_clk_desc cam_rawa_desc = {
+	.clks = cam_rawa_clks,
+	.num_clks = ARRAY_SIZE(cam_rawa_clks),
+};
+
+static const struct mtk_clk_desc cam_rawb_desc = {
+	.clks = cam_rawb_clks,
+	.num_clks = ARRAY_SIZE(cam_rawb_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8186_cam[] = {
+	{
+		.compatible = "mediatek,mt8186-camsys",
+		.data = &cam_desc,
+	}, {
+		.compatible = "mediatek,mt8186-camsys_rawa",
+		.data = &cam_rawa_desc,
+	}, {
+		.compatible = "mediatek,mt8186-camsys_rawb",
+		.data = &cam_rawb_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8186_cam_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8186-cam",
+		.of_match_table = of_match_clk_mt8186_cam,
+	},
+};
+builtin_platform_driver(clk_mt8186_cam_drv);
-- 
2.18.0