clk: mediatek: Add MT8188 vdecsys clock support

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

Signed-off-by: Garmin.Chang <Garmin.Chang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230331123621.16167-12-Garmin.Chang@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: garminchang

drivers/clk/mediatek/Kconfig

@@ -720,6 +720,13 @@ config COMMON_CLK_MT8188_MFGCFG
 	help
 	  This driver supports MediaTek MT8188 mfgcfg clocks.
 
+config COMMON_CLK_MT8188_VDECSYS
+	tristate "Clock driver for MediaTek MT8188 vdecsys"
+	depends on COMMON_CLK_MT8188_VPPSYS
+	default COMMON_CLK_MT8188_VPPSYS
+	help
+	  This driver supports MediaTek MT8188 vdecsys and vdecsys_soc clocks.
+
 config COMMON_CLK_MT8192
 	tristate "Clock driver for MediaTek MT8192"
 	depends on ARM64 || COMPILE_TEST

drivers/clk/mediatek/Makefile

@@ -106,6 +106,7 @@ obj-$(CONFIG_COMMON_CLK_MT8188_CAMSYS) += clk-mt8188-cam.o clk-mt8188-ccu.o
 obj-$(CONFIG_COMMON_CLK_MT8188_IMGSYS) += clk-mt8188-img.o
 obj-$(CONFIG_COMMON_CLK_MT8188_IPESYS) += clk-mt8188-ipe.o
 obj-$(CONFIG_COMMON_CLK_MT8188_MFGCFG) += clk-mt8188-mfg.o
+obj-$(CONFIG_COMMON_CLK_MT8188_VDECSYS) += clk-mt8188-vdec.o
 obj-$(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

drivers/clk/mediatek/clk-mt8188-vdec.c

@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022 MediaTek Inc.
+ * Author: Garmin Chang <garmin.chang@mediatek.com>
+ */
+
+#include <dt-bindings/clock/mediatek,mt8188-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.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 */ }
+};
+MODULE_DEVICE_TABLE(of, of_match_clk_mt8188_vdec);
+
+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,
+	},
+};
+
+module_platform_driver(clk_mt8188_vdec_drv);
+MODULE_LICENSE("GPL");