[PATCH v6 19/27] clk: mediatek: Add MT8196 mdpsys clock support

[Laura Nao <laura.nao@collabora.com>]

Add support for the MT8196 mdpsys clock controller, which provides clock
gate control for MDP.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org> # CLK_OPS_PARENT_ENABLE removal
Signed-off-by: Laura Nao <laura.nao@collabora.com>
---
 drivers/clk/mediatek/Kconfig             |   7 +
 drivers/clk/mediatek/Makefile            |   1 +
 drivers/clk/mediatek/clk-mt8196-mdpsys.c | 186 +++++++++++++++++++++++
 3 files changed, 194 insertions(+)
 create mode 100644 drivers/clk/mediatek/clk-mt8196-mdpsys.c

diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig
index 8e5cdae80748..68ac08cf8e82 100644
--- a/drivers/clk/mediatek/Kconfig
+++ b/drivers/clk/mediatek/Kconfig
@@ -1024,6 +1024,13 @@ config COMMON_CLK_MT8196_MCUSYS
 	help
 	  This driver supports MediaTek MT8196 mcusys clocks.
 
+config COMMON_CLK_MT8196_MDPSYS
+	tristate "Clock driver for MediaTek MT8196 mdpsys"
+	depends on COMMON_CLK_MT8196
+	default COMMON_CLK_MT8196
+	help
+	  This driver supports MediaTek MT8196 mdpsys clocks.
+
 config COMMON_CLK_MT8196_PEXTPSYS
 	tristate "Clock driver for MediaTek MT8196 pextpsys"
 	depends on COMMON_CLK_MT8196
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 46358623c3e5..d2d8bc43e45b 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -155,6 +155,7 @@ obj-$(CONFIG_COMMON_CLK_MT8196) += clk-mt8196-apmixedsys.o clk-mt8196-topckgen.o
 				   clk-mt8196-peri_ao.o
 obj-$(CONFIG_COMMON_CLK_MT8196_IMP_IIC_WRAP) += clk-mt8196-imp_iic_wrap.o
 obj-$(CONFIG_COMMON_CLK_MT8196_MCUSYS) += clk-mt8196-mcu.o
+obj-$(CONFIG_COMMON_CLK_MT8196_MDPSYS) += clk-mt8196-mdpsys.o
 obj-$(CONFIG_COMMON_CLK_MT8196_PEXTPSYS) += clk-mt8196-pextp.o
 obj-$(CONFIG_COMMON_CLK_MT8196_UFSSYS) += clk-mt8196-ufs_ao.o
 obj-$(CONFIG_COMMON_CLK_MT8365) += clk-mt8365-apmixedsys.o clk-mt8365.o
diff --git a/drivers/clk/mediatek/clk-mt8196-mdpsys.c b/drivers/clk/mediatek/clk-mt8196-mdpsys.c
new file mode 100644
index 000000000000..7667d88f0eb0
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8196-mdpsys.c
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2025 MediaTek Inc.
+ *                    Guangjie Song <guangjie.song@mediatek.com>
+ * Copyright (c) 2025 Collabora Ltd.
+ *                    Laura Nao <laura.nao@collabora.com>
+ */
+#include <dt-bindings/clock/mediatek,mt8196-clock.h>
+
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs mdp0_cg_regs = {
+	.set_ofs = 0x104,
+	.clr_ofs = 0x108,
+	.sta_ofs = 0x100,
+};
+
+static const struct mtk_gate_regs mdp1_cg_regs = {
+	.set_ofs = 0x114,
+	.clr_ofs = 0x118,
+	.sta_ofs = 0x110,
+};
+
+static const struct mtk_gate_regs mdp2_cg_regs = {
+	.set_ofs = 0x124,
+	.clr_ofs = 0x128,
+	.sta_ofs = 0x120,
+};
+
+#define GATE_MDP0(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &mdp0_cg_regs,			\
+		.shift = _shift,			\
+		.flags = CLK_OPS_PARENT_ENABLE,		\
+		.ops = &mtk_clk_gate_ops_setclr,	\
+	}
+
+#define GATE_MDP1(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &mdp1_cg_regs,			\
+		.shift = _shift,			\
+		.ops = &mtk_clk_gate_ops_setclr,	\
+	}
+
+#define GATE_MDP2(_id, _name, _parent, _shift) {	\
+		.id = _id,				\
+		.name = _name,				\
+		.parent_name = _parent,			\
+		.regs = &mdp2_cg_regs,			\
+		.shift = _shift,			\
+		.flags = CLK_OPS_PARENT_ENABLE,		\
+		.ops = &mtk_clk_gate_ops_setclr,	\
+	}
+
+static const struct mtk_gate mdp1_clks[] = {
+	/* MDP1-0 */
+	GATE_MDP0(CLK_MDP1_MDP_MUTEX0, "mdp1_mdp_mutex0", "mdp", 0),
+	GATE_MDP0(CLK_MDP1_SMI0, "mdp1_smi0", "mdp", 1),
+	GATE_MDP0(CLK_MDP1_APB_BUS, "mdp1_apb_bus", "mdp", 2),
+	GATE_MDP0(CLK_MDP1_MDP_RDMA0, "mdp1_mdp_rdma0", "mdp", 3),
+	GATE_MDP0(CLK_MDP1_MDP_RDMA1, "mdp1_mdp_rdma1", "mdp", 4),
+	GATE_MDP0(CLK_MDP1_MDP_RDMA2, "mdp1_mdp_rdma2", "mdp", 5),
+	GATE_MDP0(CLK_MDP1_MDP_BIRSZ0, "mdp1_mdp_birsz0", "mdp", 6),
+	GATE_MDP0(CLK_MDP1_MDP_HDR0, "mdp1_mdp_hdr0", "mdp", 7),
+	GATE_MDP0(CLK_MDP1_MDP_AAL0, "mdp1_mdp_aal0", "mdp", 8),
+	GATE_MDP0(CLK_MDP1_MDP_RSZ0, "mdp1_mdp_rsz0", "mdp", 9),
+	GATE_MDP0(CLK_MDP1_MDP_RSZ2, "mdp1_mdp_rsz2", "mdp", 10),
+	GATE_MDP0(CLK_MDP1_MDP_TDSHP0, "mdp1_mdp_tdshp0", "mdp", 11),
+	GATE_MDP0(CLK_MDP1_MDP_COLOR0, "mdp1_mdp_color0", "mdp", 12),
+	GATE_MDP0(CLK_MDP1_MDP_WROT0, "mdp1_mdp_wrot0", "mdp", 13),
+	GATE_MDP0(CLK_MDP1_MDP_WROT1, "mdp1_mdp_wrot1", "mdp", 14),
+	GATE_MDP0(CLK_MDP1_MDP_WROT2, "mdp1_mdp_wrot2", "mdp", 15),
+	GATE_MDP0(CLK_MDP1_MDP_FAKE_ENG0, "mdp1_mdp_fake_eng0", "mdp", 16),
+	GATE_MDP0(CLK_MDP1_APB_DB, "mdp1_apb_db", "mdp", 17),
+	GATE_MDP0(CLK_MDP1_MDP_DLI_ASYNC0, "mdp1_mdp_dli_async0", "mdp", 18),
+	GATE_MDP0(CLK_MDP1_MDP_DLI_ASYNC1, "mdp1_mdp_dli_async1", "mdp", 19),
+	GATE_MDP0(CLK_MDP1_MDP_DLO_ASYNC0, "mdp1_mdp_dlo_async0", "mdp", 20),
+	GATE_MDP0(CLK_MDP1_MDP_DLO_ASYNC1, "mdp1_mdp_dlo_async1", "mdp", 21),
+	GATE_MDP0(CLK_MDP1_MDP_DLI_ASYNC2, "mdp1_mdp_dli_async2", "mdp", 22),
+	GATE_MDP0(CLK_MDP1_MDP_DLO_ASYNC2, "mdp1_mdp_dlo_async2", "mdp", 23),
+	GATE_MDP0(CLK_MDP1_MDP_DLO_ASYNC3, "mdp1_mdp_dlo_async3", "mdp", 24),
+	GATE_MDP0(CLK_MDP1_IMG_DL_ASYNC0, "mdp1_img_dl_async0", "mdp", 25),
+	GATE_MDP0(CLK_MDP1_MDP_RROT0, "mdp1_mdp_rrot0", "mdp", 26),
+	GATE_MDP0(CLK_MDP1_MDP_MERGE0, "mdp1_mdp_merge0", "mdp", 27),
+	GATE_MDP0(CLK_MDP1_MDP_C3D0, "mdp1_mdp_c3d0", "mdp", 28),
+	GATE_MDP0(CLK_MDP1_MDP_FG0, "mdp1_mdp_fg0", "mdp", 29),
+	GATE_MDP0(CLK_MDP1_MDP_CLA2, "mdp1_mdp_cla2", "mdp", 30),
+	GATE_MDP0(CLK_MDP1_MDP_DLO_ASYNC4, "mdp1_mdp_dlo_async4", "mdp", 31),
+	/* MDP1-1 */
+	GATE_MDP1(CLK_MDP1_VPP_RSZ0, "mdp1_vpp_rsz0", "mdp", 0),
+	GATE_MDP1(CLK_MDP1_VPP_RSZ1, "mdp1_vpp_rsz1", "mdp", 1),
+	GATE_MDP1(CLK_MDP1_MDP_DLO_ASYNC5, "mdp1_mdp_dlo_async5", "mdp", 2),
+	GATE_MDP1(CLK_MDP1_IMG0, "mdp1_img0", "mdp", 3),
+	GATE_MDP1(CLK_MDP1_F26M, "mdp1_f26m", "clk26m", 27),
+	/* MDP1-2 */
+	GATE_MDP2(CLK_MDP1_IMG_DL_RELAY0, "mdp1_img_dl_relay0", "mdp", 0),
+	GATE_MDP2(CLK_MDP1_IMG_DL_RELAY1, "mdp1_img_dl_relay1", "mdp", 8),
+};
+
+static const struct mtk_clk_desc mdp1_mcd = {
+	.clks = mdp1_clks,
+	.num_clks = ARRAY_SIZE(mdp1_clks),
+	.need_runtime_pm = true,
+};
+
+
+static const struct mtk_gate mdp_clks[] = {
+	/* MDP0 */
+	GATE_MDP0(CLK_MDP_MDP_MUTEX0, "mdp_mdp_mutex0", "mdp", 0),
+	GATE_MDP0(CLK_MDP_SMI0, "mdp_smi0", "mdp", 1),
+	GATE_MDP0(CLK_MDP_APB_BUS, "mdp_apb_bus", "mdp", 2),
+	GATE_MDP0(CLK_MDP_MDP_RDMA0, "mdp_mdp_rdma0", "mdp", 3),
+	GATE_MDP0(CLK_MDP_MDP_RDMA1, "mdp_mdp_rdma1", "mdp", 4),
+	GATE_MDP0(CLK_MDP_MDP_RDMA2, "mdp_mdp_rdma2", "mdp", 5),
+	GATE_MDP0(CLK_MDP_MDP_BIRSZ0, "mdp_mdp_birsz0", "mdp", 6),
+	GATE_MDP0(CLK_MDP_MDP_HDR0, "mdp_mdp_hdr0", "mdp", 7),
+	GATE_MDP0(CLK_MDP_MDP_AAL0, "mdp_mdp_aal0", "mdp", 8),
+	GATE_MDP0(CLK_MDP_MDP_RSZ0, "mdp_mdp_rsz0", "mdp", 9),
+	GATE_MDP0(CLK_MDP_MDP_RSZ2, "mdp_mdp_rsz2", "mdp", 10),
+	GATE_MDP0(CLK_MDP_MDP_TDSHP0, "mdp_mdp_tdshp0", "mdp", 11),
+	GATE_MDP0(CLK_MDP_MDP_COLOR0, "mdp_mdp_color0", "mdp", 12),
+	GATE_MDP0(CLK_MDP_MDP_WROT0, "mdp_mdp_wrot0", "mdp", 13),
+	GATE_MDP0(CLK_MDP_MDP_WROT1, "mdp_mdp_wrot1", "mdp", 14),
+	GATE_MDP0(CLK_MDP_MDP_WROT2, "mdp_mdp_wrot2", "mdp", 15),
+	GATE_MDP0(CLK_MDP_MDP_FAKE_ENG0, "mdp_mdp_fake_eng0", "mdp", 16),
+	GATE_MDP0(CLK_MDP_APB_DB, "mdp_apb_db", "mdp", 17),
+	GATE_MDP0(CLK_MDP_MDP_DLI_ASYNC0, "mdp_mdp_dli_async0", "mdp", 18),
+	GATE_MDP0(CLK_MDP_MDP_DLI_ASYNC1, "mdp_mdp_dli_async1", "mdp", 19),
+	GATE_MDP0(CLK_MDP_MDP_DLO_ASYNC0, "mdp_mdp_dlo_async0", "mdp", 20),
+	GATE_MDP0(CLK_MDP_MDP_DLO_ASYNC1, "mdp_mdp_dlo_async1", "mdp", 21),
+	GATE_MDP0(CLK_MDP_MDP_DLI_ASYNC2, "mdp_mdp_dli_async2", "mdp", 22),
+	GATE_MDP0(CLK_MDP_MDP_DLO_ASYNC2, "mdp_mdp_dlo_async2", "mdp", 23),
+	GATE_MDP0(CLK_MDP_MDP_DLO_ASYNC3, "mdp_mdp_dlo_async3", "mdp", 24),
+	GATE_MDP0(CLK_MDP_IMG_DL_ASYNC0, "mdp_img_dl_async0", "mdp", 25),
+	GATE_MDP0(CLK_MDP_MDP_RROT0, "mdp_mdp_rrot0", "mdp", 26),
+	GATE_MDP0(CLK_MDP_MDP_MERGE0, "mdp_mdp_merge0", "mdp", 27),
+	GATE_MDP0(CLK_MDP_MDP_C3D0, "mdp_mdp_c3d0", "mdp", 28),
+	GATE_MDP0(CLK_MDP_MDP_FG0, "mdp_mdp_fg0", "mdp", 29),
+	GATE_MDP0(CLK_MDP_MDP_CLA2, "mdp_mdp_cla2", "mdp", 30),
+	GATE_MDP0(CLK_MDP_MDP_DLO_ASYNC4, "mdp_mdp_dlo_async4", "mdp", 31),
+	/* MDP1 */
+	GATE_MDP1(CLK_MDP_VPP_RSZ0, "mdp_vpp_rsz0", "mdp", 0),
+	GATE_MDP1(CLK_MDP_VPP_RSZ1, "mdp_vpp_rsz1", "mdp", 1),
+	GATE_MDP1(CLK_MDP_MDP_DLO_ASYNC5, "mdp_mdp_dlo_async5", "mdp", 2),
+	GATE_MDP1(CLK_MDP_IMG0, "mdp_img0", "mdp", 3),
+	GATE_MDP1(CLK_MDP_F26M, "mdp_f26m", "clk26m", 27),
+	/* MDP2 */
+	GATE_MDP2(CLK_MDP_IMG_DL_RELAY0, "mdp_img_dl_relay0", "mdp", 0),
+	GATE_MDP2(CLK_MDP_IMG_DL_RELAY1, "mdp_img_dl_relay1", "mdp", 8),
+};
+
+static const struct mtk_clk_desc mdp_mcd = {
+	.clks = mdp_clks,
+	.num_clks = ARRAY_SIZE(mdp_clks),
+	.need_runtime_pm = true,
+};
+
+static const struct of_device_id of_match_clk_mt8196_mdpsys[] = {
+	{ .compatible = "mediatek,mt8196-mdpsys0", .data = &mdp_mcd },
+	{ .compatible = "mediatek,mt8196-mdpsys1", .data = &mdp1_mcd },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_mdpsys);
+
+static struct platform_driver clk_mt8196_mdpsys_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8196-mdpsys",
+		.of_match_table = of_match_clk_mt8196_mdpsys,
+	},
+};
+module_platform_driver(clk_mt8196_mdpsys_drv);
+
+MODULE_DESCRIPTION("MediaTek MT8196 Multimedia Data Path clocks driver");
+MODULE_LICENSE("GPL");
-- 
2.39.5