[PATCH v6 11/19] clk: mediatek: Add MT8188 vdecsys clock support

[Garmin.Chang]

Add MT8188 vdec clock controllers which provide clock gate
control for video decoder.

Signed-off-by: Garmin.Chang <Garmin.Chang at mediatek.com>
---
 drivers/clk/mediatek/Makefile          |  2 +-
 drivers/clk/mediatek/clk-mt8188-vdec.c | 90 ++++++++++++++++++++++++++
 2 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8188-vdec.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index dfe2c74c422c..bf8e50b54bb4 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -94,7 +94,7 @@ obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o clk-mt8186-topckgen.o clk-mt
 obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o \
 				   clk-mt8188-peri_ao.o clk-mt8188-infra_ao.o \
 				   clk-mt8188-cam.o clk-mt8188-ccu.o clk-mt8188-img.o \
-				   clk-mt8188-ipe.o clk-mt8188-mfg.o
+				   clk-mt8188-ipe.o clk-mt8188-mfg.o clk-mt8188-vdec.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-mt8188-vdec.c b/drivers/clk/mediatek/clk-mt8188-vdec.c
new file mode 100644
index 000000000000..4dc6f9e18f19
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8188-vdec.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Garmin Chang <garmin.chang at mediatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mediatek,mt8188-clk.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs vdec0_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x4,
+	.sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs vdec1_cg_regs = {
+	.set_ofs = 0x200,
+	.clr_ofs = 0x204,
+	.sta_ofs = 0x200,
+};
+
+static const struct mtk_gate_regs vdec2_cg_regs = {
+	.set_ofs = 0x8,
+	.clr_ofs = 0xc,
+	.sta_ofs = 0x8,
+};
+
+#define GATE_VDEC0(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdec0_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+#define GATE_VDEC1(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdec1_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+#define GATE_VDEC2(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vdec2_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+static const struct mtk_gate vdec1_clks[] = {
+	/* VDEC1_0 */
+	GATE_VDEC0(CLK_VDEC1_SOC_VDEC, "vdec1_soc_vdec", "top_vdec", 0),
+	GATE_VDEC0(CLK_VDEC1_SOC_VDEC_ACTIVE, "vdec1_soc_vdec_active", "top_vdec", 4),
+	GATE_VDEC0(CLK_VDEC1_SOC_VDEC_ENG, "vdec1_soc_vdec_eng", "top_vdec", 8),
+	/* VDEC1_1 */
+	GATE_VDEC1(CLK_VDEC1_SOC_LAT, "vdec1_soc_lat", "top_vdec", 0),
+	GATE_VDEC1(CLK_VDEC1_SOC_LAT_ACTIVE, "vdec1_soc_lat_active", "top_vdec", 4),
+	GATE_VDEC1(CLK_VDEC1_SOC_LAT_ENG, "vdec1_soc_lat_eng", "top_vdec", 8),
+	/* VDEC1_2 */
+	GATE_VDEC2(CLK_VDEC1_SOC_LARB1, "vdec1_soc_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_gate vdec2_clks[] = {
+	/* VDEC2_0 */
+	GATE_VDEC0(CLK_VDEC2_VDEC, "vdec2_vdec", "top_vdec", 0),
+	GATE_VDEC0(CLK_VDEC2_VDEC_ACTIVE, "vdec2_vdec_active", "top_vdec", 4),
+	GATE_VDEC0(CLK_VDEC2_VDEC_ENG, "vdec2_vdec_eng", "top_vdec", 8),
+	/* VDEC2_1 */
+	GATE_VDEC1(CLK_VDEC2_LAT, "vdec2_lat", "top_vdec", 0),
+	/* VDEC2_2 */
+	GATE_VDEC2(CLK_VDEC2_LARB1, "vdec2_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_clk_desc vdec1_desc = {
+	.clks = vdec1_clks,
+	.num_clks = ARRAY_SIZE(vdec1_clks),
+};
+
+static const struct mtk_clk_desc vdec2_desc = {
+	.clks = vdec2_clks,
+	.num_clks = ARRAY_SIZE(vdec2_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8188_vdec[] = {
+	{ .compatible = "mediatek,mt8188-vdecsys-soc", .data = &vdec1_desc },
+	{ .compatible = "mediatek,mt8188-vdecsys", .data = &vdec2_desc },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver clk_mt8188_vdec_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8188-vdec",
+		.of_match_table = of_match_clk_mt8188_vdec,
+	},
+};
+
+builtin_platform_driver(clk_mt8188_vdec_drv);
+MODULE_LICENSE("GPL");
-- 
2.18.0