[RESEND v13 10/22] drm/mediatek: add display MDP RDMA support for MT8195

Nancy.Lin
2022-03-08T09:35:42Z

Add MDP_RDMA driver for MT8195. MDP_RDMA is the DMA engine of
the ovl_adaptor component.

Signed-off-by: Nancy.Lin <nancy.lin@mediatek.com>
Reviewed-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
---
drivers/gpu/drm/mediatek/Makefile | 3 +-
drivers/gpu/drm/mediatek/mtk_disp_drv.h | 7 +
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
drivers/gpu/drm/mediatek/mtk_drm_drv.h | 1 +
drivers/gpu/drm/mediatek/mtk_mdp_rdma.c | 315 ++++++++++++++++++++++++
drivers/gpu/drm/mediatek/mtk_mdp_rdma.h | 20 ++
6 files changed, 346 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
create mode 100644 drivers/gpu/drm/mediatek/mtk_mdp_rdma.h

diff --git a/drivers/gpu/drm/mediatek/Makefile b/drivers/gpu/drm/mediatek/Makefile
index a38e88e82d12..6e604a933ed0 100644
--- a/drivers/gpu/drm/mediatek/Makefile
+++ b/drivers/gpu/drm/mediatek/Makefile
@@ -13,7 +13,8 @@ mediatek-drm-y := mtk_disp_aal.o \
mtk_drm_gem.o \
mtk_drm_plane.o \
mtk_dsi.o \
- mtk_dpi.o
+ mtk_dpi.o \
+ mtk_mdp_rdma.o

obj-$(CONFIG_DRM_MEDIATEK) += mediatek-drm.o

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index a33b13fe2b6e..b3a372cab0bd 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -8,6 +8,7 @@

#include <linux/soc/mediatek/mtk-cmdq.h>
#include "mtk_drm_plane.h"
+#include "mtk_mdp_rdma.h"

int mtk_aal_clk_enable(struct device *dev);
void mtk_aal_clk_disable(struct device *dev);
@@ -106,4 +107,10 @@ void mtk_rdma_enable_vblank(struct device *dev,
void *vblank_cb_data);
void mtk_rdma_disable_vblank(struct device *dev);

+int mtk_mdp_rdma_clk_enable(struct device *dev);
+void mtk_mdp_rdma_clk_disable(struct device *dev);
+void mtk_mdp_rdma_start(struct device *dev, struct cmdq_pkt *cmdq_pkt);
+void mtk_mdp_rdma_stop(struct device *dev, struct cmdq_pkt *cmdq_pkt);
+void mtk_mdp_rdma_config(struct device *dev, struct mtk_mdp_rdma_cfg *cfg,
+ struct cmdq_pkt *cmdq_pkt);
#endif
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 274a5bb10851..fa41306422df 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -743,6 +743,7 @@ static struct platform_driver * const mtk_drm_drivers[] = {
&mtk_dpi_driver,
&mtk_drm_platform_driver,
&mtk_dsi_driver,
+ &mtk_mdp_rdma_driver,
};

static int __init mtk_drm_init(void)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
index a58cebd01d35..64a1f66df26a 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
@@ -55,5 +55,6 @@ extern struct platform_driver mtk_disp_ovl_driver;
extern struct platform_driver mtk_disp_rdma_driver;
extern struct platform_driver mtk_dpi_driver;
extern struct platform_driver mtk_dsi_driver;
+extern struct platform_driver mtk_mdp_rdma_driver;

#endif /* MTK_DRM_DRV_H */
diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
new file mode 100644
index 000000000000..eecfa98ff52e
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ */
+
+#include <drm/drm_fourcc.h>
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/soc/mediatek/mtk-cmdq.h>
+
+#include "mtk_disp_drv.h"
+#include "mtk_drm_drv.h"
+#include "mtk_mdp_rdma.h"
+
+#define MDP_RDMA_EN 0x000
+#define FLD_ROT_ENABLE BIT(0)
+#define MDP_RDMA_RESET 0x008
+#define MDP_RDMA_CON 0x020
+#define FLD_OUTPUT_10B BIT(5)
+#define FLD_SIMPLE_MODE BIT(4)
+#define MDP_RDMA_GMCIF_CON 0x028
+#define FLD_COMMAND_DIV BIT(0)
+#define FLD_EXT_PREULTRA_EN BIT(3)
+#define FLD_RD_REQ_TYPE GENMASK(7, 4)
+#define VAL_RD_REQ_TYPE_BURST_8_ACCESS 7
+#define FLD_ULTRA_EN GENMASK(13, 12)
+#define VAL_ULTRA_EN_ENABLE 1
+#define FLD_PRE_ULTRA_EN GENMASK(17, 16)
+#define VAL_PRE_ULTRA_EN_ENABLE 1
+#define FLD_EXT_ULTRA_EN BIT(18)
+#define MDP_RDMA_SRC_CON 0x030
+#define FLD_OUTPUT_ARGB BIT(25)
+#define FLD_BIT_NUMBER GENMASK(19, 18)
+#define FLD_SWAP BIT(14)
+#define FLD_UNIFORM_CONFIG BIT(17)
+#define RDMA_INPUT_10BIT BIT(18)
+#define FLD_SRC_FORMAT GENMASK(3, 0)
+#define MDP_RDMA_COMP_CON 0x038
+#define FLD_AFBC_EN BIT(22)
+#define FLD_AFBC_YUV_TRANSFORM BIT(21)
+#define FLD_UFBDC_EN BIT(12)
+#define MDP_RDMA_MF_BKGD_SIZE_IN_BYTE 0x060
+#define FLD_MF_BKGD_WB GENMASK(22, 0)
+#define MDP_RDMA_MF_SRC_SIZE 0x070
+#define FLD_MF_SRC_H GENMASK(30, 16)
+#define FLD_MF_SRC_W GENMASK(14, 0)
+#define MDP_RDMA_MF_CLIP_SIZE 0x078
+#define FLD_MF_CLIP_H GENMASK(30, 16)
+#define FLD_MF_CLIP_W GENMASK(14, 0)
+#define MDP_RDMA_SRC_OFFSET_0 0x118
+#define FLD_SRC_OFFSET_0 GENMASK(31, 0)
+#define MDP_RDMA_TRANSFORM_0 0x200
+#define FLD_INT_MATRIX_SEL GENMASK(27, 23)
+#define FLD_TRANS_EN BIT(16)
+#define MDP_RDMA_SRC_BASE_0 0xf00
+#define FLD_SRC_BASE_0 GENMASK(31, 0)
+
+#define RDMA_CSC_FULL709_TO_RGB 5
+#define RDMA_CSC_BT601_TO_RGB 6
+
+enum rdma_format {
+ RDMA_INPUT_FORMAT_RGB565 = 0,
+ RDMA_INPUT_FORMAT_RGB888 = 1,
+ RDMA_INPUT_FORMAT_RGBA8888 = 2,
+ RDMA_INPUT_FORMAT_ARGB8888 = 3,
+ RDMA_INPUT_FORMAT_UYVY = 4,
+ RDMA_INPUT_FORMAT_YUY2 = 5,
+ RDMA_INPUT_FORMAT_Y8 = 7,
+ RDMA_INPUT_FORMAT_YV12 = 8,
+ RDMA_INPUT_FORMAT_UYVY_3PL = 9,
+ RDMA_INPUT_FORMAT_NV12 = 12,
+ RDMA_INPUT_FORMAT_UYVY_2PL = 13,
+ RDMA_INPUT_FORMAT_Y410 = 14
+};
+
+struct mtk_mdp_rdma {
+ void __iomem *regs;
+ struct clk *clk;
+ struct cmdq_client_reg cmdq_reg;
+};
+
+static unsigned int rdma_fmt_convert(unsigned int fmt)
+{
+ switch (fmt) {
+ default:
+ case DRM_FORMAT_RGB565:
+ return RDMA_INPUT_FORMAT_RGB565;
+ case DRM_FORMAT_BGR565:
+ return RDMA_INPUT_FORMAT_RGB565 | FLD_SWAP;
+ case DRM_FORMAT_RGB888:
+ return RDMA_INPUT_FORMAT_RGB888;
+ case DRM_FORMAT_BGR888:
+ return RDMA_INPUT_FORMAT_RGB888 | FLD_SWAP;
+ case DRM_FORMAT_RGBX8888:
+ case DRM_FORMAT_RGBA8888:
+ return RDMA_INPUT_FORMAT_ARGB8888;
+ case DRM_FORMAT_BGRX8888:
+ case DRM_FORMAT_BGRA8888:
+ return RDMA_INPUT_FORMAT_ARGB8888 | FLD_SWAP;
+ case DRM_FORMAT_XRGB8888:
+ case DRM_FORMAT_ARGB8888:
+ return RDMA_INPUT_FORMAT_RGBA8888;
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_ABGR8888:
+ return RDMA_INPUT_FORMAT_RGBA8888 | FLD_SWAP;
+ case DRM_FORMAT_ABGR2101010:
+ return RDMA_INPUT_FORMAT_RGBA8888 | FLD_SWAP | RDMA_INPUT_10BIT;
+ case DRM_FORMAT_ARGB2101010:
+ return RDMA_INPUT_FORMAT_RGBA8888 | RDMA_INPUT_10BIT;
+ case DRM_FORMAT_RGBA1010102:
+ return RDMA_INPUT_FORMAT_ARGB8888 | FLD_SWAP | RDMA_INPUT_10BIT;
+ case DRM_FORMAT_BGRA1010102:
+ return RDMA_INPUT_FORMAT_ARGB8888 | RDMA_INPUT_10BIT;
+ case DRM_FORMAT_UYVY:
+ return RDMA_INPUT_FORMAT_UYVY;
+ case DRM_FORMAT_YUYV:
+ return RDMA_INPUT_FORMAT_YUY2;
+ }
+}
+
+static unsigned int rdma_color_convert(unsigned int color_encoding)
+{
+ switch (color_encoding) {
+ default:
+ case DRM_COLOR_YCBCR_BT709:
+ return RDMA_CSC_FULL709_TO_RGB;
+ case DRM_COLOR_YCBCR_BT601:
+ return RDMA_CSC_BT601_TO_RGB;
+ }
+}
+
+static void mtk_mdp_rdma_fifo_config(struct device *dev, struct cmdq_pkt *cmdq_pkt)
+{
+ struct mtk_mdp_rdma *priv = dev_get_drvdata(dev);
+
+ mtk_ddp_write_mask(cmdq_pkt, FLD_EXT_ULTRA_EN | VAL_PRE_ULTRA_EN_ENABLE << 16 |
+ VAL_ULTRA_EN_ENABLE << 12 | VAL_RD_REQ_TYPE_BURST_8_ACCESS << 4 |
+ FLD_EXT_PREULTRA_EN | FLD_COMMAND_DIV, &priv->cmdq_reg,
+ priv->regs, MDP_RDMA_GMCIF_CON, FLD_EXT_ULTRA_EN |
+ FLD_PRE_ULTRA_EN | FLD_ULTRA_EN | FLD_RD_REQ_TYPE |
+ FLD_EXT_PREULTRA_EN | FLD_COMMAND_DIV);
+}
+
+void mtk_mdp_rdma_start(struct device *dev, struct cmdq_pkt *cmdq_pkt)
+{
+ struct mtk_mdp_rdma *priv = dev_get_drvdata(dev);
+
+ mtk_ddp_write_mask(cmdq_pkt, FLD_ROT_ENABLE, &priv->cmdq_reg,
+ priv->regs, MDP_RDMA_EN, FLD_ROT_ENABLE);
+}
+
+void mtk_mdp_rdma_stop(struct device *dev, struct cmdq_pkt *cmdq_pkt)
+{
+ struct mtk_mdp_rdma *priv = dev_get_drvdata(dev);
+
+ mtk_ddp_write_mask(cmdq_pkt, 0, &priv->cmdq_reg,
+ priv->regs, MDP_RDMA_EN, FLD_ROT_ENABLE);
+ mtk_ddp_write(cmdq_pkt, 1, &priv->cmdq_reg, priv->regs, MDP_RDMA_RESET);
+ mtk_ddp_write(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, MDP_RDMA_RESET);
+}
+
+void mtk_mdp_rdma_config(struct device *dev, struct mtk_mdp_rdma_cfg *cfg,
+ struct cmdq_pkt *cmdq_pkt)
+{
+ struct mtk_mdp_rdma *priv = dev_get_drvdata(dev);
+ const struct drm_format_info *fmt_info = drm_format_info(cfg->fmt);
+ bool csc_enable = fmt_info->is_yuv ? true : false;
+ unsigned int src_pitch_y = cfg->pitch;
+ unsigned int offset_y = 0;
+
+ mtk_mdp_rdma_fifo_config(dev, cmdq_pkt);
+
+ mtk_ddp_write_mask(cmdq_pkt, FLD_UNIFORM_CONFIG, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_SRC_CON, FLD_UNIFORM_CONFIG);
+ mtk_ddp_write_mask(cmdq_pkt, rdma_fmt_convert(cfg->fmt), &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_SRC_CON, FLD_SWAP | FLD_SRC_FORMAT | FLD_BIT_NUMBER);
+
+ if (!csc_enable && fmt_info->has_alpha)
+ mtk_ddp_write_mask(cmdq_pkt, FLD_OUTPUT_ARGB, &priv->cmdq_reg,
+ priv->regs, MDP_RDMA_SRC_CON, FLD_OUTPUT_ARGB);
+ else
+ mtk_ddp_write_mask(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_SRC_CON, FLD_OUTPUT_ARGB);
+
+ mtk_ddp_write_mask(cmdq_pkt, cfg->addr0, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_SRC_BASE_0, FLD_SRC_BASE_0);
+
+ mtk_ddp_write_mask(cmdq_pkt, src_pitch_y, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_MF_BKGD_SIZE_IN_BYTE, FLD_MF_BKGD_WB);
+
+ mtk_ddp_write_mask(cmdq_pkt, 0, &priv->cmdq_reg, priv->regs, MDP_RDMA_COMP_CON,
+ FLD_AFBC_YUV_TRANSFORM | FLD_UFBDC_EN | FLD_AFBC_EN);
+ mtk_ddp_write_mask(cmdq_pkt, FLD_OUTPUT_10B, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_CON, FLD_OUTPUT_10B);
+ mtk_ddp_write_mask(cmdq_pkt, FLD_SIMPLE_MODE, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_CON, FLD_SIMPLE_MODE);
+ if (csc_enable)
+ mtk_ddp_write_mask(cmdq_pkt, rdma_color_convert(cfg->color_encoding) << 23,
+ &priv->cmdq_reg, priv->regs, MDP_RDMA_TRANSFORM_0,
+ FLD_INT_MATRIX_SEL);
+ mtk_ddp_write_mask(cmdq_pkt, csc_enable << 16, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_TRANSFORM_0, FLD_TRANS_EN);
+
+ offset_y = cfg->x_left * fmt_info->cpp[0] + cfg->y_top * src_pitch_y;
+
+ mtk_ddp_write_mask(cmdq_pkt, offset_y, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_SRC_OFFSET_0, FLD_SRC_OFFSET_0);
+ mtk_ddp_write_mask(cmdq_pkt, cfg->width, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_MF_SRC_SIZE, FLD_MF_SRC_W);
+ mtk_ddp_write_mask(cmdq_pkt, cfg->height << 16, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_MF_SRC_SIZE, FLD_MF_SRC_H);
+ mtk_ddp_write_mask(cmdq_pkt, cfg->width, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_MF_CLIP_SIZE, FLD_MF_CLIP_W);
+ mtk_ddp_write_mask(cmdq_pkt, cfg->height << 16, &priv->cmdq_reg, priv->regs,
+ MDP_RDMA_MF_CLIP_SIZE, FLD_MF_CLIP_H);
+}
+
+int mtk_mdp_rdma_clk_enable(struct device *dev)
+{
+ struct mtk_mdp_rdma *rdma = dev_get_drvdata(dev);
+
+ clk_prepare_enable(rdma->clk);
+ return 0;
+}
+
+void mtk_mdp_rdma_clk_disable(struct device *dev)
+{
+ struct mtk_mdp_rdma *rdma = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(rdma->clk);
+}
+
+static int mtk_mdp_rdma_bind(struct device *dev, struct device *master,
+ void *data)
+{
+ return 0;
+}
+
+static void mtk_mdp_rdma_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+}
+
+static const struct component_ops mtk_mdp_rdma_component_ops = {
+ .bind = mtk_mdp_rdma_bind,
+ .unbind = mtk_mdp_rdma_unbind,
+};
+
+static int mtk_mdp_rdma_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ struct mtk_mdp_rdma *priv;
+ int ret = 0;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ priv->regs = devm_ioremap_resource(dev, res);
+ if (IS_ERR(priv->regs)) {
+ dev_err(dev, "failed to ioremap rdma\n");
+ return PTR_ERR(priv->regs);
+ }
+
+ priv->clk = devm_clk_get(dev, NULL);
+ if (IS_ERR(priv->clk)) {
+ dev_err(dev, "failed to get rdma clk\n");
+ return PTR_ERR(priv->clk);
+ }
+
+#if IS_REACHABLE(CONFIG_MTK_CMDQ)
+ ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
+ if (ret)
+ dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
+#endif
+ platform_set_drvdata(pdev, priv);
+
+ pm_runtime_enable(dev);
+
+ ret = component_add(dev, &mtk_mdp_rdma_component_ops);
+ if (ret != 0) {
+ pm_runtime_disable(dev);
+ dev_err(dev, "Failed to add component: %d\n", ret);
+ }
+ return ret;
+}
+
+static int mtk_mdp_rdma_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &mtk_mdp_rdma_component_ops);
+ pm_runtime_disable(&pdev->dev);
+ return 0;
+}
+
+static const struct of_device_id mtk_mdp_rdma_driver_dt_match[] = {
+ { .compatible = "mediatek,mt8195-vdo1-rdma", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mtk_mdp_rdma_driver_dt_match);
+
+struct platform_driver mtk_mdp_rdma_driver = {
+ .probe = mtk_mdp_rdma_probe,
+ .remove = mtk_mdp_rdma_remove,
+ .driver = {
+ .name = "mediatek-mdp-rdma",
+ .owner = THIS_MODULE,
+ .of_match_table = mtk_mdp_rdma_driver_dt_match,
+ },
+};
diff --git a/drivers/gpu/drm/mediatek/mtk_mdp_rdma.h b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.h
new file mode 100644
index 000000000000..9943ee3aac31
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ */
+
+#ifndef __MTK_MDP_RDMA_H__
+#define __MTK_MDP_RDMA_H__
+
+struct mtk_mdp_rdma_cfg {
+ unsigned int pitch;
+ unsigned int addr0;
+ unsigned int width;
+ unsigned int height;
+ unsigned int x_left;
+ unsigned int y_top;
+ int fmt;
+ int color_encoding;
+};
+
+#endif // __MTK_MDP_RDMA_H__
--
2.18.0