[PATCH 28/30] clk: mediatek: Add MT8196 vencsys clock support

Laura Nao
2025-06-23T10:31:05Z

Add support for the MT8196 vencsys clock controller, which provides
clock gate control for the video encoder.

Signed-off-by: Laura Nao <laura.nao@collabora.com>
---
drivers/clk/mediatek/Kconfig | 7 +
drivers/clk/mediatek/Makefile | 1 +
drivers/clk/mediatek/clk-mt8196-venc.c | 235 +++++++++++++++++++++++++
3 files changed, 243 insertions(+)
create mode 100644 drivers/clk/mediatek/clk-mt8196-venc.c

diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig
index fc20942a547e..84b91e7bc8f6 100644
--- a/drivers/clk/mediatek/Kconfig
+++ b/drivers/clk/mediatek/Kconfig
@@ -1131,6 +1131,13 @@ config COMMON_CLK_MT8196_VDECSYS
help
This driver supports MediaTek MT8196 vdecsys clocks.

+config COMMON_CLK_MT8196_VENCSYS
+ tristate "Clock driver for MediaTek MT8196 vencsys"
+ depends on COMMON_CLK_MT8196
+ default m
+ help
+ This driver supports MediaTek MT8196 vencsys clocks.
+
config COMMON_CLK_MT8365
tristate "Clock driver for MediaTek MT8365"
depends on ARCH_MEDIATEK || COMPILE_TEST
diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 5d3b68649a53..069cca024cd1 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -173,6 +173,7 @@ obj-$(CONFIG_COMMON_CLK_MT8196_MMSYS) += clk-mt8196-disp0.o clk-mt8196-disp1.o c
obj-$(CONFIG_COMMON_CLK_MT8196_PEXTPSYS) += clk-mt8196-pextp.o
obj-$(CONFIG_COMMON_CLK_MT8196_UFSSYS) += clk-mt8196-ufs_ao.o
obj-$(CONFIG_COMMON_CLK_MT8196_VDECSYS) += clk-mt8196-vdec.o
+obj-$(CONFIG_COMMON_CLK_MT8196_VENCSYS) += clk-mt8196-venc.o
obj-$(CONFIG_COMMON_CLK_MT8365) += clk-mt8365-apmixedsys.o clk-mt8365.o
obj-$(CONFIG_COMMON_CLK_MT8365_APU) += clk-mt8365-apu.o
obj-$(CONFIG_COMMON_CLK_MT8365_CAM) += clk-mt8365-cam.o
diff --git a/drivers/clk/mediatek/clk-mt8196-venc.c b/drivers/clk/mediatek/clk-mt8196-venc.c
new file mode 100644
index 000000000000..ecbd42629e9f
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8196-venc.c
@@ -0,0 +1,235 @@
+// 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 ven10_cg_regs = {
+ .set_ofs = 0x4,
+ .clr_ofs = 0x8,
+ .sta_ofs = 0x0,
+};
+
+static const struct mtk_gate_regs ven10_hwv_regs = {
+ .set_ofs = 0x00b8,
+ .clr_ofs = 0x00bc,
+ .sta_ofs = 0x2c5c,
+};
+
+static const struct mtk_gate_regs ven11_cg_regs = {
+ .set_ofs = 0x10,
+ .clr_ofs = 0x14,
+ .sta_ofs = 0x10,
+};
+
+static const struct mtk_gate_regs ven11_hwv_regs = {
+ .set_ofs = 0x00c0,
+ .clr_ofs = 0x00c4,
+ .sta_ofs = 0x2c60,
+};
+
+#define GATE_VEN10(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven10_cg_regs, \
+ .shift = _shift, \
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ .ops = &mtk_clk_gate_ops_setclr_inv, \
+ }
+
+#define GATE_HWV_VEN10_FLAGS(_id, _name, _parent, _shift, _flags) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven10_cg_regs, \
+ .hwv_regs = &ven10_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr_inv, \
+ .flags = (_flags) | \
+ CLK_OPS_PARENT_ENABLE, \
+ }
+
+#define GATE_HWV_VEN10(_id, _name, _parent, _shift) \
+ GATE_HWV_VEN10_FLAGS(_id, _name, _parent, _shift, 0)
+
+#define GATE_HWV_VEN11(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven11_cg_regs, \
+ .hwv_regs = &ven11_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr_inv,\
+ .flags = CLK_OPS_PARENT_ENABLE \
+ }
+
+static const struct mtk_gate ven1_clks[] = {
+ /* VEN10 */
+ GATE_HWV_VEN10(CLK_VEN1_CKE0_LARB, "ven1_larb", "venc", 0),
+ GATE_HWV_VEN10(CLK_VEN1_CKE1_VENC, "ven1_venc", "venc", 4),
+ GATE_VEN10(CLK_VEN1_CKE2_JPGENC, "ven1_jpgenc", "venc", 8),
+ GATE_VEN10(CLK_VEN1_CKE3_JPGDEC, "ven1_jpgdec", "venc", 12),
+ GATE_VEN10(CLK_VEN1_CKE4_JPGDEC_C1, "ven1_jpgdec_c1", "venc", 16),
+ GATE_HWV_VEN10(CLK_VEN1_CKE5_GALS, "ven1_gals", "venc", 28),
+ GATE_HWV_VEN10(CLK_VEN1_CKE29_VENC_ADAB_CTRL, "ven1_venc_adab_ctrl",
+ "venc", 29),
+ GATE_HWV_VEN10_FLAGS(CLK_VEN1_CKE29_VENC_XPC_CTRL,
+ "ven1_venc_xpc_ctrl", "venc", 30,
+ CLK_IGNORE_UNUSED),
+ GATE_HWV_VEN10(CLK_VEN1_CKE6_GALS_SRAM, "ven1_gals_sram", "venc", 31),
+ /* VEN11 */
+ GATE_HWV_VEN11(CLK_VEN1_RES_FLAT, "ven1_res_flat", "venc", 0),
+};
+
+static const struct mtk_clk_desc ven1_mcd = {
+ .clks = ven1_clks,
+ .num_clks = ARRAY_SIZE(ven1_clks),
+ .need_runtime_pm = true,
+};
+
+static const struct mtk_gate_regs ven20_hwv_regs = {
+ .set_ofs = 0x00c8,
+ .clr_ofs = 0x00cc,
+ .sta_ofs = 0x2c64,
+};
+
+static const struct mtk_gate_regs ven21_hwv_regs = {
+ .set_ofs = 0x00d0,
+ .clr_ofs = 0x00d4,
+ .sta_ofs = 0x2c68,
+};
+
+#define GATE_VEN20(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven10_cg_regs, \
+ .shift = _shift, \
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ .ops = &mtk_clk_gate_ops_setclr_inv, \
+ }
+
+#define GATE_HWV_VEN20(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven10_cg_regs, \
+ .hwv_regs = &ven20_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr_inv,\
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ }
+
+#define GATE_HWV_VEN21(_id, _name, _parent, _shift) { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven11_cg_regs, \
+ .hwv_regs = &ven21_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr, \
+ .flags = CLK_OPS_PARENT_ENABLE \
+ }
+
+static const struct mtk_gate ven2_clks[] = {
+ /* VEN20 */
+ GATE_HWV_VEN20(CLK_VEN2_CKE0_LARB, "ven2_larb", "venc", 0),
+ GATE_HWV_VEN20(CLK_VEN2_CKE1_VENC, "ven2_venc", "venc", 4),
+ GATE_VEN20(CLK_VEN2_CKE2_JPGENC, "ven2_jpgenc", "venc", 8),
+ GATE_VEN20(CLK_VEN2_CKE3_JPGDEC, "ven2_jpgdec", "venc", 12),
+ GATE_HWV_VEN20(CLK_VEN2_CKE5_GALS, "ven2_gals", "venc", 28),
+ GATE_HWV_VEN20(CLK_VEN2_CKE29_VENC_XPC_CTRL, "ven2_venc_xpc_ctrl", "venc", 30),
+ GATE_HWV_VEN20(CLK_VEN2_CKE6_GALS_SRAM, "ven2_gals_sram", "venc", 31),
+ /* VEN21 */
+ GATE_HWV_VEN21(CLK_VEN2_RES_FLAT, "ven2_res_flat", "venc", 0),
+};
+
+static const struct mtk_clk_desc ven2_mcd = {
+ .clks = ven2_clks,
+ .num_clks = ARRAY_SIZE(ven2_clks),
+ .need_runtime_pm = true,
+};
+
+static const struct mtk_gate_regs ven_c20_hwv_regs = {
+ .set_ofs = 0x00d8,
+ .clr_ofs = 0x00dc,
+ .sta_ofs = 0x2c6c,
+};
+
+static const struct mtk_gate_regs ven_c21_hwv_regs = {
+ .set_ofs = 0x00e0,
+ .clr_ofs = 0x00e4,
+ .sta_ofs = 0x2c70,
+};
+
+#define GATE_HWV_VEN_C20(_id, _name, _parent, _shift) {\
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven10_cg_regs, \
+ .hwv_regs = &ven_c20_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr_inv,\
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ }
+
+#define GATE_HWV_VEN_C21(_id, _name, _parent, _shift) {\
+ .id = _id, \
+ .name = _name, \
+ .parent_name = _parent, \
+ .regs = &ven11_cg_regs, \
+ .hwv_regs = &ven_c21_hwv_regs, \
+ .shift = _shift, \
+ .ops = &mtk_clk_gate_hwv_ops_setclr, \
+ .flags = CLK_OPS_PARENT_ENABLE, \
+ }
+
+static const struct mtk_gate ven_c2_clks[] = {
+ /* VEN_C20 */
+ GATE_HWV_VEN_C20(CLK_VEN_C2_CKE0_LARB, "ven_c2_larb", "venc", 0),
+ GATE_HWV_VEN_C20(CLK_VEN_C2_CKE1_VENC, "ven_c2_venc", "venc", 4),
+ GATE_HWV_VEN_C20(CLK_VEN_C2_CKE5_GALS, "ven_c2_gals", "venc", 28),
+ GATE_HWV_VEN_C20(CLK_VEN_C2_CKE29_VENC_XPC_CTRL, "ven_c2_venc_xpc_ctrl",
+ "venc", 30),
+ GATE_HWV_VEN_C20(CLK_VEN_C2_CKE6_GALS_SRAM, "ven_c2_gals_sram", "venc", 31),
+ /* VEN_C21 */
+ GATE_HWV_VEN_C21(CLK_VEN_C2_RES_FLAT, "ven_c2_res_flat", "venc", 0),
+};
+
+static const struct mtk_clk_desc ven_c2_mcd = {
+ .clks = ven_c2_clks,
+ .num_clks = ARRAY_SIZE(ven_c2_clks),
+ .need_runtime_pm = true,
+};
+
+static const struct of_device_id of_match_clk_mt8196_venc[] = {
+ { .compatible = "mediatek,mt8196-vencsys", .data = &ven1_mcd },
+ { .compatible = "mediatek,mt8196-vencsys-c1", .data = &ven2_mcd },
+ { .compatible = "mediatek,mt8196-vencsys-c2", .data = &ven_c2_mcd },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, of_match_clk_mt8196_venc);
+
+static struct platform_driver clk_mt8196_venc_drv = {
+ .probe = mtk_clk_simple_probe,
+ .remove = mtk_clk_simple_remove,
+ .driver = {
+ .name = "clk-mt8196-venc",
+ .of_match_table = of_match_clk_mt8196_venc,
+ },
+};
+module_platform_driver(clk_mt8196_venc_drv);
+
+MODULE_DESCRIPTION("MediaTek MT8196 Video Encoders clocks driver");
+MODULE_LICENSE("GPL");
--
2.39.5