[PATCH v4 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 a0fd87a882b5..7d09e9fc6538 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -86,7 +86,7 @@ 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..e05a27957136
--- /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 vde0_cg_regs = {
+	.set_ofs = 0x0,
+	.clr_ofs = 0x4,
+	.sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs vde1_cg_regs = {
+	.set_ofs = 0x200,
+	.clr_ofs = 0x204,
+	.sta_ofs = 0x200,
+};
+
+static const struct mtk_gate_regs vde2_cg_regs = {
+	.set_ofs = 0x8,
+	.clr_ofs = 0xc,
+	.sta_ofs = 0x8,
+};
+
+#define GATE_VDE0(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vde0_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+#define GATE_VDE1(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vde1_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+#define GATE_VDE2(_id, _name, _parent, _shift)			\
+	GATE_MTK(_id, _name, _parent, &vde2_cg_regs, _shift, &mtk_clk_gate_ops_setclr_inv)
+
+static const struct mtk_gate vde1_clks[] = {
+	/* VDE1_0 */
+	GATE_VDE0(CLK_VDE1_SOC_VDEC, "vde1_soc_vdec", "top_vdec", 0),
+	GATE_VDE0(CLK_VDE1_SOC_VDEC_ACTIVE, "vde1_soc_vdec_active", "top_vdec", 4),
+	GATE_VDE0(CLK_VDE1_SOC_VDEC_ENG, "vde1_soc_vdec_eng", "top_vdec", 8),
+	/* VDE1_1 */
+	GATE_VDE1(CLK_VDE1_SOC_LAT, "vde1_soc_lat", "top_vdec", 0),
+	GATE_VDE1(CLK_VDE1_SOC_LAT_ACTIVE, "vde1_soc_lat_active", "top_vdec", 4),
+	GATE_VDE1(CLK_VDE1_SOC_LAT_ENG, "vde1_soc_lat_eng", "top_vdec", 8),
+	/* VDE12 */
+	GATE_VDE2(CLK_VDE1_SOC_LARB1, "vde1_soc_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_gate vde2_clks[] = {
+	/* VDE2_0 */
+	GATE_VDE0(CLK_VDE2_VDEC, "vde2_vdec", "top_vdec", 0),
+	GATE_VDE0(CLK_VDE2_VDEC_ACTIVE, "vde2_vdec_active", "top_vdec", 4),
+	GATE_VDE0(CLK_VDE2_VDEC_ENG, "vde2_vdec_eng", "top_vdec", 8),
+	/* VDE2_1 */
+	GATE_VDE1(CLK_VDE2_LAT, "vde2_lat", "top_vdec", 0),
+	/* VDE2_2 */
+	GATE_VDE2(CLK_VDE2_LARB1, "vde2_larb1", "top_vdec", 0),
+};
+
+static const struct mtk_clk_desc vde1_desc = {
+	.clks = vde1_clks,
+	.num_clks = ARRAY_SIZE(vde1_clks),
+};
+
+static const struct mtk_clk_desc vde2_desc = {
+	.clks = vde2_clks,
+	.num_clks = ARRAY_SIZE(vde2_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8188_vde[] = {
+	{ .compatible = "mediatek,mt8188-vdecsys-soc", .data = &vde1_desc },
+	{ .compatible = "mediatek,mt8188-vdecsys", .data = &vde2_desc },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver clk_mt8188_vde_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8188-vde",
+		.of_match_table = of_match_clk_mt8188_vde,
+	},
+};
+
+builtin_platform_driver(clk_mt8188_vde_drv);
+MODULE_LICENSE("GPL");
-- 
2.18.0