[v7, PATCH 3/7] mtk-mmsys: add mt8183 mmsys support

[Yongqiang Niu]

add mt8183 mmsys support

Feature: drm/mediatek
Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx>
---
 drivers/soc/mediatek/mmsys/Makefile       |   1 +
 drivers/soc/mediatek/mmsys/mt8183-mmsys.c | 161 ++++++++++++++++++++++++++++++
 drivers/soc/mediatek/mtk-mmsys.c          |   1 +
 3 files changed, 163 insertions(+)
 create mode 100644 drivers/soc/mediatek/mmsys/mt8183-mmsys.c

diff --git a/drivers/soc/mediatek/mmsys/Makefile b/drivers/soc/mediatek/mmsys/Makefile
index 33b0dab..62cfedf 100644
--- a/drivers/soc/mediatek/mmsys/Makefile
+++ b/drivers/soc/mediatek/mmsys/Makefile
@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-y += mt2701-mmsys.o
+obj-y += mt8183-mmsys.o
diff --git a/drivers/soc/mediatek/mmsys/mt8183-mmsys.c b/drivers/soc/mediatek/mmsys/mt8183-mmsys.c
new file mode 100644
index 0000000..9d5f276
--- /dev/null
+++ b/drivers/soc/mediatek/mmsys/mt8183-mmsys.c
@@ -0,0 +1,161 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2020 MediaTek Inc.
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
+
+#define DISP_OVL0_MOUT_EN		0xf00
+#define DISP_OVL0_2L_MOUT_EN		0xf04
+#define DISP_OVL1_2L_MOUT_EN		0xf08
+#define DISP_DITHER0_MOUT_EN		0xf0c
+#define DISP_PATH0_SEL_IN		0xf24
+#define DISP_DSI0_SEL_IN		0xf2c
+#define DISP_DPI0_SEL_IN		0xf30
+#define DISP_RDMA0_SOUT_SEL_IN		0xf50
+#define DISP_RDMA1_SOUT_SEL_IN		0xf54
+
+#define OVL0_MOUT_EN_OVL0_2L			BIT(4)
+#define OVL0_2L_MOUT_EN_DISP_PATH0		BIT(0)
+#define OVL1_2L_MOUT_EN_RDMA1			BIT(4)
+#define DITHER0_MOUT_IN_DSI0			BIT(0)
+#define DISP_PATH0_SEL_IN_OVL0_2L		0x1
+#define DSI0_SEL_IN_RDMA0			0x1
+#define DSI0_SEL_IN_RDMA1			0x3
+#define DPI0_SEL_IN_RDMA0			0x1
+#define DPI0_SEL_IN_RDMA1			0x2
+#define RDMA0_SOUT_COLOR0			0x1
+#define RDMA1_SOUT_DSI0				0x1
+
+struct mmsys_path_sel {
+	enum mtk_ddp_comp_id cur;
+	enum mtk_ddp_comp_id next;
+	u32 addr;
+	u32 val;
+};
+
+static struct mmsys_path_sel mmsys_mout_en[] = {
+	{
+		DDP_COMPONENT_OVL0, DDP_COMPONENT_OVL_2L0,
+		DISP_OVL0_MOUT_EN, OVL0_MOUT_EN_OVL0_2L,
+	},
+	{
+		DDP_COMPONENT_OVL_2L0, DDP_COMPONENT_RDMA0,
+		DISP_OVL0_2L_MOUT_EN, OVL0_2L_MOUT_EN_DISP_PATH0,
+	},
+	{
+		DDP_COMPONENT_OVL_2L1, DDP_COMPONENT_RDMA1,
+		DISP_OVL1_2L_MOUT_EN, OVL1_2L_MOUT_EN_RDMA1,
+	},
+	{
+		DDP_COMPONENT_DITHER, DDP_COMPONENT_DSI0,
+		DISP_DITHER0_MOUT_EN, DITHER0_MOUT_IN_DSI0,
+	},
+};
+
+static struct mmsys_path_sel mmsys_sel_in[] = {
+	{
+		DDP_COMPONENT_OVL_2L0, DDP_COMPONENT_RDMA0,
+		DISP_PATH0_SEL_IN, DISP_PATH0_SEL_IN_OVL0_2L,
+	},
+	{
+		DDP_COMPONENT_RDMA1, DDP_COMPONENT_DPI0,
+		DISP_DPI0_SEL_IN, DPI0_SEL_IN_RDMA1,
+	},
+};
+
+static struct mmsys_path_sel mmsys_sout_sel[] = {
+	{
+		DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0,
+		DISP_RDMA0_SOUT_SEL_IN, RDMA0_SOUT_COLOR0,
+	},
+};
+
+static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
+					  enum mtk_ddp_comp_id next,
+					  unsigned int *addr)
+{
+	u32 i;
+	u32 val = 0;
+	struct mmsys_path_sel *path;
+
+	for (i = 0; i < ARRAY_SIZE(mmsys_mout_en); i++) {
+		path = &mmsys_mout_en[i];
+		if (cur == path->cur && next == path->next) {
+			*addr = path->addr;
+			val = path->val;
+			break;
+		}
+	}
+
+	return val;
+}
+
+static unsigned int mtk_mmsys_ddp_sel_in(enum mtk_ddp_comp_id cur,
+					 enum mtk_ddp_comp_id next,
+					 unsigned int *addr)
+{
+	u32 i;
+	u32 val = 0;
+	struct mmsys_path_sel *path;
+
+	for (i = 0; i < ARRAY_SIZE(mmsys_sel_in); i++) {
+		path = &mmsys_sel_in[i];
+		if (cur == path->cur && next == path->next) {
+			*addr = path->addr;
+			val = path->val;
+			break;
+		}
+	}
+
+	return val;
+}
+
+static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
+				   enum mtk_ddp_comp_id cur,
+				   enum mtk_ddp_comp_id next)
+{
+	u32 i;
+	u32 val = 0;
+	u32 addr = 0;
+	struct mmsys_path_sel *path;
+
+	for (i = 0; i < ARRAY_SIZE(mmsys_sout_sel); i++) {
+		path = &mmsys_sout_sel[i];
+		if (cur == path->cur && next == path->next) {
+			addr = path->addr;
+			val = path->val;
+			break;
+		}
+	}
+
+	if (val)
+		writel_relaxed(val, config_regs + addr);
+}
+
+static struct mtk_mmsys_conn_funcs mmsys_funcs = {
+	.mout_en = mtk_mmsys_ddp_mout_en,
+	.sel_in = mtk_mmsys_ddp_sel_in,
+	.sout_sel = mtk_mmsys_ddp_sout_sel,
+};
+
+static int mmsys_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+
+	mtk_mmsys_register_conn_funcs(dev->parent, &mmsys_funcs);
+
+	return 0;
+}
+
+static struct platform_driver mmsys_drv = {
+	.probe = mmsys_probe,
+	.driver = {
+		.name = "mt8183-mmsys",
+	},
+};
+
+builtin_platform_driver(mmsys_drv);
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 605b992..6a451ac 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -47,6 +47,7 @@ struct mtk_mmsys_private_data {
 
 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
 	.clk_driver = "clk-mt8183-mm",
+	.mmsys_driver = "mt8183-mmsys",
 };
 
 void mtk_mmsys_ddp_connect(struct device *dev,
-- 
1.8.1.1.dirty