clk: mediatek: Add MT8186 mfgsys clock support

Add MT8186 mfg clock controller which provides clock gate
control for GPU.

Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20220409132251.31725-8-chun-jie.chen@mediatek.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index 3510e8a..86e4f4d 100644 (file)
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -72,7 +72,8 @@ obj-$(CONFIG_COMMON_CLK_MT8183_MMSYS) += clk-mt8183-mm.o
 obj-$(CONFIG_COMMON_CLK_MT8183_VDECSYS) += clk-mt8183-vdec.o
 obj-$(CONFIG_COMMON_CLK_MT8183_VENCSYS) += clk-mt8183-venc.o
 obj-$(CONFIG_COMMON_CLK_MT8186) += clk-mt8186-mcu.o clk-mt8186-topckgen.o clk-mt8186-infra_ao.o \
-                                  clk-mt8186-apmixedsys.o clk-mt8186-imp_iic_wrap.o
+                                  clk-mt8186-apmixedsys.o clk-mt8186-imp_iic_wrap.o \
+                                  clk-mt8186-mfg.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-mt8186-mfg.c b/drivers/clk/mediatek/clk-mt8186-mfg.c
new file mode 100644 (file)
index 0000000..f1f9221
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8186-mfg.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2022 MediaTek Inc.
+// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>
+
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+#include <dt-bindings/clock/mt8186-clk.h>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+static const struct mtk_gate_regs mfg_cg_regs = {
+       .set_ofs = 0x4,
+       .clr_ofs = 0x8,
+       .sta_ofs = 0x0,
+};
+
+#define GATE_MFG(_id, _name, _parent, _shift)                  \
+       GATE_MTK(_id, _name, _parent, &mfg_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
+
+static const struct mtk_gate mfg_clks[] = {
+       GATE_MFG(CLK_MFG_BG3D, "mfg_bg3d", "top_mfg", 0),
+};
+
+static const struct mtk_clk_desc mfg_desc = {
+       .clks = mfg_clks,
+       .num_clks = ARRAY_SIZE(mfg_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8186_mfg[] = {
+       {
+               .compatible = "mediatek,mt8186-mfgsys",
+               .data = &mfg_desc,
+       }, {
+               /* sentinel */
+       }
+};
+
+static struct platform_driver clk_mt8186_mfg_drv = {
+       .probe = mtk_clk_simple_probe,
+       .remove = mtk_clk_simple_remove,
+       .driver = {
+               .name = "clk-mt8186-mfg",
+               .of_match_table = of_match_clk_mt8186_mfg,
+       },
+};
+builtin_platform_driver(clk_mt8186_mfg_drv);