Hi, Nancy: Nancy.Lin <nancy.lin@xxxxxxxxxxxx> 於 2021年9月6日 週一 下午3:15寫道： > > Add MDP_RDMA driver for MT8195. MDP_RDMA is the DMA engine of > the ovl_adaptor component. > > Signed-off-by: Nancy.Lin <nancy.lin@xxxxxxxxxxxx> > --- > drivers/gpu/drm/mediatek/Makefile | 3 +- > drivers/gpu/drm/mediatek/mtk_disp_drv.h | 7 + > drivers/gpu/drm/mediatek/mtk_mdp_rdma.c | 301 ++++++++++++++++++++++++ > drivers/gpu/drm/mediatek/mtk_mdp_rdma.h | 37 +++ > 4 files changed, 347 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_mdp_rdma.c b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c > new file mode 100644 > index 000000000000..052434d960b9 > --- /dev/null > +++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.c > @@ -0,0 +1,301 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (c) 2021 MediaTek Inc. > + */ > + > +#include <drm/drm_fourcc.h> > +#include <linux/clk.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_drm_drv.h" > +#include "mtk_disp_drv.h" > +#include "mtk_mdp_rdma.h" > + > +#define MDP_RDMA_EN 0x000 > + #define FLD_ROT_ENABLE BIT(0) Maybe my description is not good, I like the style of rdma driver [1]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/mediatek/mtk_disp_rdma.c?h=v5.14 > + > +#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_UNIFORM_CONFIG BIT(17) > + #define FLD_SWAP BIT(14) > + #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_TARGET_LINE 0x0a0 > + #define FLD_LINE_THRESHOLD GENMASK(31, 17) > + #define FLD_TARGET_LINE_EN BIT(16) > + > +#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_INPUT_SWAP BIT(14) > +#define RDMA_INPUT_10BIT BIT(18) > + > +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 | RDMA_INPUT_SWAP; > + case DRM_FORMAT_RGB888: > + return RDMA_INPUT_FORMAT_RGB888; > + case DRM_FORMAT_BGR888: > + return RDMA_INPUT_FORMAT_RGB888 | RDMA_INPUT_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 | RDMA_INPUT_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 | RDMA_INPUT_SWAP; > + case DRM_FORMAT_ABGR2101010: > + return RDMA_INPUT_FORMAT_RGBA8888 | RDMA_INPUT_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 | RDMA_INPUT_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 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); > + unsigned int src_pitch_y = cfg->pitch; > + unsigned int bpp_y = fmt_info->cpp[0] * 8; > + 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 (!cfg->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); > + mtk_ddp_write_mask(cmdq_pkt, cfg->csc_enable << 16, &priv->cmdq_reg, priv->regs, > + MDP_RDMA_TRANSFORM_0, FLD_TRANS_EN); > + mtk_ddp_write_mask(cmdq_pkt, cfg->profile << 23, &priv->cmdq_reg, priv->regs, > + MDP_RDMA_TRANSFORM_0, FLD_INT_MATRIX_SEL); > + > + offset_y = (cfg->x_left * bpp_y >> 3) + 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); > + mtk_ddp_write_mask(cmdq_pkt, cfg->height << 17, &priv->cmdq_reg, priv->regs, > + MDP_RDMA_TARGET_LINE, FLD_LINE_THRESHOLD); > + mtk_ddp_write_mask(cmdq_pkt, FLD_TARGET_LINE_EN, &priv->cmdq_reg, priv->regs, > + MDP_RDMA_TARGET_LINE, FLD_TARGET_LINE_EN); Why enable target line? > +} > + > +int mtk_mdp_rdma_clk_enable(struct device *dev) > +{ > + struct mtk_mdp_rdma *rdma = dev_get_drvdata(dev); > + > + pm_runtime_get_sync(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); > + pm_runtime_put(dev); > +} > + > +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); > + return ret; > +} > + > +static int mtk_mdp_rdma_remove(struct platform_device *pdev) > +{ > + 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, > + }, > +}; > +module_platform_driver(mtk_mdp_rdma_driver); > 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..df8e28f0e3a4 > --- /dev/null > +++ b/drivers/gpu/drm/mediatek/mtk_mdp_rdma.h > @@ -0,0 +1,37 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (c) 2021 MediaTek Inc. > + */ > + > +#ifndef __MTK_MDP_RDMA_H__ > +#define __MTK_MDP_RDMA_H__ > + > +enum mtk_mdp_rdma_profile { > + RDMA_CSC_RGB_TO_JPEG = 0, > + RDMA_CSC_RGB_TO_FULL709 = 1, > + RDMA_CSC_RGB_TO_BT601 = 2, > + RDMA_CSC_RGB_TO_BT709 = 3, > + RDMA_CSC_JPEG_TO_RGB = 4, > + RDMA_CSC_FULL709_TO_RGB = 5, > + RDMA_CSC_BT601_TO_RGB = 6, > + RDMA_CSC_BT709_TO_RGB = 7, > + RDMA_CSC_JPEG_TO_BT601 = 8, > + RDMA_CSC_JPEG_TO_BT709 = 9, > + RDMA_CSC_BT601_TO_JPEG = 10, > + RDMA_CSC_BT709_TO_BT601 = 11, > + RDMA_CSC_BT601_TO_BT709 = 12 It seems that this is the register definition. If this definition is changed in next SoC, how to define this value? Maybe we could pass the drm_color_encoding and drm_color_range information for YUV format, and let rdma do the translation in this driver. Regards, Chun-Kuang. > +}; > + > +struct mtk_mdp_rdma_cfg { > + enum mtk_mdp_rdma_profile profile; > + unsigned int pitch; > + unsigned int addr0; > + unsigned int width; > + unsigned int height; > + unsigned int x_left; > + unsigned int y_top; > + bool csc_enable; > + int fmt; > +}; > + > +#endif // __MTK_MDP_RDMA_H__ > -- > 2.18.0 >
