[v3,23/24] clk: mediatek: Add MT8195 imp i2c wrapper clock support

Commit Message

Chun-Jie Chen Sept. 14, 2021, 2:16 a.m. UTC

Add MT8195 imp i2c wrapper clock controllers which provide clock gate
control in I2C IP blocks.

Signed-off-by: Chun-Jie Chen <[e-mail]>
Reviewed-by: Chen-Yu Tsai <[e-mail]>
---
 drivers/clk/mediatek/Makefile                 |  2 +-
 .../clk/mediatek/clk-mt8195-imp_iic_wrap.c    | 68 +++++++++++++++++++
 2 files changed, 69 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/mediatek/clk-mt8195-imp_iic_wrap.c

Comments

Stephen Boyd Sept. 14, 2021, 10:20 p.m. UTC | #1

Quoting Chun-Jie Chen (2021-09-13 19:16:32)
> Add MT8195 imp i2c wrapper clock controllers which provide clock gate
> control in I2C IP blocks.
> 
> Signed-off-by: Chun-Jie Chen <[e-mail]>
> Reviewed-by: Chen-Yu Tsai <[e-mail]>
> ---

Applied to clk-next

Patch

diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile
index b539cc4ef16f..3c602af49c0a 100644
--- a/drivers/clk/mediatek/Makefile
+++ b/drivers/clk/mediatek/Makefile
@@ -86,6 +86,6 @@  obj-$(CONFIG_COMMON_CLK_MT8195) += clk-mt8195-apmixedsys.o clk-mt8195-topckgen.o
 				   clk-mt8195-ipe.o clk-mt8195-mfg.o clk-mt8195-scp_adsp.o \
 				   clk-mt8195-vdec.o clk-mt8195-vdo0.o clk-mt8195-vdo1.o \
 				   clk-mt8195-venc.o clk-mt8195-vpp0.o clk-mt8195-vpp1.o \
-				   clk-mt8195-wpe.o
+				   clk-mt8195-wpe.o clk-mt8195-imp_iic_wrap.o
 obj-$(CONFIG_COMMON_CLK_MT8516) += clk-mt8516.o
 obj-$(CONFIG_COMMON_CLK_MT8516_AUDSYS) += clk-mt8516-aud.o
diff --git a/drivers/clk/mediatek/clk-mt8195-imp_iic_wrap.c b/drivers/clk/mediatek/clk-mt8195-imp_iic_wrap.c
new file mode 100644
index 000000000000..0e2ac0a30aa0
--- /dev/null
+++ b/drivers/clk/mediatek/clk-mt8195-imp_iic_wrap.c
@@ -0,0 +1,68 @@ 
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2021 MediaTek Inc.
+// Author: Chun-Jie Chen <[e-mail]>
+
+#include "clk-gate.h"
+#include "clk-mtk.h"
+
+#include <dt-bindings/clock/mt8195-clk.h>
+#include <linux/clk-provider.h>
+#include <linux/platform_device.h>
+
+#include <dt-bindings/clock/mt8195-clk.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_s_clks[] = {
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_S_I2C5, "imp_iic_wrap_s_i2c5", "top_i2c", 0),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_S_I2C6, "imp_iic_wrap_s_i2c6", "top_i2c", 1),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_S_I2C7, "imp_iic_wrap_s_i2c7", "top_i2c", 2),
+};
+
+static const struct mtk_gate imp_iic_wrap_w_clks[] = {
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_I2C0, "imp_iic_wrap_w_i2c0", "top_i2c", 0),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_I2C1, "imp_iic_wrap_w_i2c1", "top_i2c", 1),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_I2C2, "imp_iic_wrap_w_i2c2", "top_i2c", 2),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_I2C3, "imp_iic_wrap_w_i2c3", "top_i2c", 3),
+	GATE_IMP_IIC_WRAP(CLK_IMP_IIC_WRAP_W_I2C4, "imp_iic_wrap_w_i2c4", "top_i2c", 4),
+};
+
+static const struct mtk_clk_desc imp_iic_wrap_s_desc = {
+	.clks = imp_iic_wrap_s_clks,
+	.num_clks = ARRAY_SIZE(imp_iic_wrap_s_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 of_device_id of_match_clk_mt8195_imp_iic_wrap[] = {
+	{
+		.compatible = "mediatek,mt8195-imp_iic_wrap_s",
+		.data = &imp_iic_wrap_s_desc,
+	}, {
+		.compatible = "mediatek,mt8195-imp_iic_wrap_w",
+		.data = &imp_iic_wrap_w_desc,
+	}, {
+		/* sentinel */
+	}
+};
+
+static struct platform_driver clk_mt8195_imp_iic_wrap_drv = {
+	.probe = mtk_clk_simple_probe,
+	.driver = {
+		.name = "clk-mt8195-imp_iic_wrap",
+		.of_match_table = of_match_clk_mt8195_imp_iic_wrap,
+	},
+};
+builtin_platform_driver(clk_mt8195_imp_iic_wrap_drv);