[PATCH v5 18/18] clk: mediatek: Add MT8189 vcodec clock support

[irving.ch.lin <irving-ch.lin@mediatek.com>]

From: Irving-CH Lin <irving-ch.lin@mediatek.com>

Add support for the MT8189 vcodec clock controller,
which provides clock gate control for video encoder/decoder.

Signed-off-by: Irving-CH Lin <irving-ch.lin@mediatek.com>
---
 drivers/clk/mediatek/Kconfig             | 10 +++
 drivers/clk/mediatek/Makefile            |  1 +
 drivers/clk/mediatek/clk-mt8189-vcodec.c | 93 ++++++++++++++++++++++++
 3 files changed, 104 insertions(+)
 create mode 100644 drivers/clk/mediatek/clk-mt8189-vcodec.c

diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig
index 5f48e7174070..32a0b92180ec 100644
--- a/drivers/clk/mediatek/Kconfig
+++ b/drivers/clk/mediatek/Kconfig
@@ -951,6 +951,16 @@ config COMMON_CLK_MT8189_UFS
 	  option if the system includes a UFS device that relies on the MT8189
 	  SoC for clock management.
 
+config COMMON_CLK_MT8189_VCODEC
+	tristate "Clock driver for MediaTek MT8189 vcodec"
+	depends on COMMON_CLK_MT8189
+	default COMMON_CLK_MT8189
+	help
+	  This driver supports the video codec (VCODEC) clocks on the MediaTek
+	  MT8189 SoCs. Enabling this option will allow the system to manage
+	  clocks required for the operation of hardware video encoding and
+	  decoding features provided by the VCODEC unit of the MT8189 platform.
+
 config COMMON_CLK_MT8192
 	tristate "Clock driver for MediaTek MT8192"
 	depends on ARM64 || COMPILE_TEST
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 4179808dba7b..614371c92e81 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -136,6 +136,7 @@ obj-$(CONFIG_COMMON_CLK_MT8189_MFG) += clk-mt8189-mfg.o
 obj-$(CONFIG_COMMON_CLK_MT8189_MMSYS) += clk-mt8189-dispsys.o
 obj-$(CONFIG_COMMON_CLK_MT8189_SCP) += clk-mt8189-scp.o
 obj-$(CONFIG_COMMON_CLK_MT8189_UFS) += clk-mt8189-ufs.o
+obj-$(CONFIG_COMMON_CLK_MT8189_VCODEC) += clk-mt8189-vcodec.o
 obj-$(CONFIG_COMMON_CLK_MT8192) += clk-mt8192-apmixedsys.o 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-mt8189-vcodec.c b/drivers/clk/mediatek/clk-mt8189-vcodec.c
new file mode 100644
index 000000000000..87b01e432474
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8189-vcodec.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2025 MediaTek Inc.
+ * Author: Qiqi Wang <qiqi.wang@mediatek.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-mtk.h"
+#include "clk-gate.h"
+
+#include <dt-bindings/clock/mediatek,mt8189-clk.h>
+
+static const struct mtk_gate_regs vdec_core0_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x4,
+	.sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs vdec_core1_cg_regs = {
+	.set_ofs = 0x8,
+	.clr_ofs = 0xc,
+	.sta_ofs = 0x8,
+};
+
+#define GATE_VDEC_CORE0(_id, _name, _parent, _shift)				\
+	GATE_MTK_FLAGS(_id, _name, _parent, &vdec_core0_cg_regs, _shift,	\
+		       &mtk_clk_gate_ops_setclr_inv, CLK_IGNORE_UNUSED)
+
+#define GATE_VDEC_CORE1(_id, _name, _parent, _shift)				\
+	GATE_MTK_FLAGS(_id, _name, _parent, &vdec_core1_cg_regs, _shift,	\
+		       &mtk_clk_gate_ops_setclr_inv, CLK_IGNORE_UNUSED)
+
+static const struct mtk_gate vdec_core_clks[] = {
+	/* VDEC_CORE0 */
+	GATE_VDEC_CORE0(CLK_VDEC_CORE_VDEC_CKEN, "vdec_core_vdec_cken", "vdec_sel", 0),
+	GATE_VDEC_CORE0(CLK_VDEC_CORE_VDEC_ACTIVE, "vdec_core_vdec_active", "vdec_sel", 4),
+	/* VDEC_CORE1 */
+	GATE_VDEC_CORE1(CLK_VDEC_CORE_LARB_CKEN, "vdec_core_larb_cken", "vdec_sel", 0),
+};
+
+static const struct mtk_clk_desc vdec_core_mcd = {
+	.clks = vdec_core_clks,
+	.num_clks = ARRAY_SIZE(vdec_core_clks),
+};
+
+static const struct mtk_gate_regs ven1_cg_regs = {
+	.set_ofs = 0x4,
+	.clr_ofs = 0x8,
+	.sta_ofs = 0x0,
+};
+
+#define GATE_VEN1(_id, _name, _parent, _shift)				\
+	GATE_MTK_FLAGS(_id, _name, _parent, &ven1_cg_regs, _shift,	\
+		       &mtk_clk_gate_ops_setclr_inv, CLK_IGNORE_UNUSED)
+
+static const struct mtk_gate ven1_clks[] = {
+	GATE_VEN1(CLK_VEN1_CKE0_LARB, "ven1_larb", "venc_sel", 0),
+	GATE_VEN1(CLK_VEN1_CKE1_VENC, "ven1_venc", "venc_sel", 4),
+	GATE_VEN1(CLK_VEN1_CKE2_JPGENC, "ven1_jpgenc", "venc_sel", 8),
+	GATE_VEN1(CLK_VEN1_CKE3_JPGDEC, "ven1_jpgdec", "venc_sel", 12),
+	GATE_VEN1(CLK_VEN1_CKE4_JPGDEC_C1, "ven1_jpgdec_c1", "venc_sel", 16),
+	GATE_VEN1(CLK_VEN1_CKE5_GALS, "ven1_gals", "venc_sel", 28),
+	GATE_VEN1(CLK_VEN1_CKE6_GALS_SRAM, "ven1_gals_sram", "venc_sel", 31),
+};
+
+static const struct mtk_clk_desc ven1_mcd = {
+	.clks = ven1_clks,
+	.num_clks = ARRAY_SIZE(ven1_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8189_vcodec[] = {
+	{ .compatible = "mediatek,mt8189-vdec-core", .data = &vdec_core_mcd },
+	{ .compatible = "mediatek,mt8189-venc", .data = &ven1_mcd },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, of_match_clk_mt8189_vcodec);
+
+static struct platform_driver clk_mt8189_vcodec_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8189-vcodec",
+		.of_match_table = of_match_clk_mt8189_vcodec,
+	},
+};
+
+module_platform_driver(clk_mt8189_vcodec_drv);
+MODULE_DESCRIPTION("MediaTek MT8189 video encoder/decoder clocks driver");
+MODULE_LICENSE("GPL");
-- 
2.45.2