[PATCH v4 18/19] clk: mediatek: Add MT8188 imp i2c wrapper clock support

[Garmin.Chang]

Add MT8188 imp i2c wrapper clock controllers which provide clock gate
control in I2C IP blocks.

Signed-off-by: Garmin.Chang <Garmin.Chang at mediatek.com>
---
 drivers/clk/mediatek/Makefile                 |  3 +-
 .../clk/mediatek/clk-mt8188-imp_iic_wrap.c    | 78 +++++++++++++++++++
 2 files changed, 80 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8188-imp_iic_wrap.c

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index ed35546819a9..8befaedfdd3d 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -88,7 +88,8 @@ obj-$(CONFIG_COMMON_CLK_MT8188) += clk-mt8188-apmixedsys.o clk-mt8188-topckgen.o
 				   clk-mt8188-cam.o clk-mt8188-ccu.o clk-mt8188-img.o \
 				   clk-mt8188-ipe.o clk-mt8188-mfg.o clk-mt8188-vdec.o \
 				   clk-mt8188-vdo0.o clk-mt8188-vdo1.o clk-mt8188-venc.o \
-				   clk-mt8188-vpp0.o clk-mt8188-vpp1.o clk-mt8188-wpe.o
+				   clk-mt8188-vpp0.o clk-mt8188-vpp1.o clk-mt8188-wpe.o \
+				   clk-mt8188-imp_iic_wrap.o
 obj-$(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-imp_iic_wrap.c b/drivers/clk/mediatek/clk-mt8188-imp_iic_wrap.c
new file mode 100644
index 000000000000..e9b951f95fba
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8188-imp_iic_wrap.c
@@ -0,0 +1,78 @@
+// 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 imp_iic_wrap_cg_regs = {
+	.set_ofs = 0xe08,
+	.clr_ofs = 0xe04,
+	.sta_ofs = 0xe00,
+};
+
+#define GATE_IMP_IIC_WRAP(_id, _name, _parent, _shift)			\
+	GATE_MTK_FLAGS(_id, _name, _parent, &imp_iic_wrap_cg_regs, _shift,			\
+		&mtk_clk_gate_ops_setclr, CLK_OPS_PARENT_ENABLE)
+
+static const struct mtk_gate imp_iic_wrap_c_clks[] = {
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_C_AP_CLOCK_I2C0,
+			  "imp_iic_wrap_c_ap_clock_i2c0", "top_i2c", 0),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_C_AP_CLOCK_I2C2,
+			  "imp_iic_wrap_c_ap_clock_i2c2", "top_i2c", 1),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_C_AP_CLOCK_I2C3,
+			  "imp_iic_wrap_c_ap_clock_i2c3", "top_i2c", 2),
+};
+
+static const struct mtk_gate imp_iic_wrap_w_clks[] = {
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_AP_CLOCK_I2C1,
+			  "imp_iic_wrap_w_ap_clock_i2c1", "top_i2c", 0),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_AP_CLOCK_I2C4,
+			  "imp_iic_wrap_w_ap_clock_i2c4", "top_i2c", 1),
+};
+
+static const struct mtk_gate imp_iic_wrap_en_clks[] = {
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_EN_AP_CLOCK_I2C5,
+			  "imp_iic_wrap_en_ap_clock_i2c5", "top_i2c", 0),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_EN_AP_CLOCK_I2C6,
+			  "imp_iic_wrap_en_ap_clock_i2c6", "top_i2c", 1),
+};
+
+static const struct mtk_clk_desc imp_iic_wrap_c_desc = {
+	.clks = imp_iic_wrap_c_clks,
+	.num_clks = ARRAY_SIZE(imp_iic_wrap_c_clks),
+};
+
+static const struct mtk_clk_desc imp_iic_wrap_w_desc = {
+	.clks = imp_iic_wrap_w_clks,
+	.num_clks = ARRAY_SIZE(imp_iic_wrap_w_clks),
+};
+
+static const struct mtk_clk_desc imp_iic_wrap_en_desc = {
+	.clks = imp_iic_wrap_en_clks,
+	.num_clks = ARRAY_SIZE(imp_iic_wrap_en_clks),
+};
+
+static const struct of_device_id of_match_clk_mt8188_imp_iic_wrap[] = {
+	{ .compatible = "mediatek,mt8188-imp-iic-wrap-c", .data = &imp_iic_wrap_c_desc },
+	{ .compatible = "mediatek,mt8188-imp-iic-wrap-w", .data = &imp_iic_wrap_w_desc },
+	{ .compatible = "mediatek,mt8188-imp-iic-wrap-en", .data = &imp_iic_wrap_en_desc },
+	{ /* sentinel */ }
+};
+
+static struct platform_driver clk_mt8188_imp_iic_wrap_drv = {
+	.probe = mtk_clk_simple_probe,
+	.remove = mtk_clk_simple_remove,
+	.driver = {
+		.name = "clk-mt8188-imp_iic_wrap",
+		.of_match_table = of_match_clk_mt8188_imp_iic_wrap,
+	},
+};
+
+builtin_platform_driver(clk_mt8188_imp_iic_wrap_drv);
+MODULE_LICENSE("GPL");
-- 
2.18.0