// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2015 MediaTek Inc. * Author: YT SHEN */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mtk_crtc.h" #include "mtk_ddp_comp.h" #include "mtk_disp_drv.h" #include "mtk_drm_drv.h" #include "mtk_gem.h" #define DRIVER_NAME "mediatek" #define DRIVER_DESC "Mediatek SoC DRM" #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0 static const struct drm_mode_config_helper_funcs mtk_drm_mode_config_helpers = { .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, }; static struct drm_framebuffer * mtk_drm_mode_fb_create(struct drm_device *dev, struct drm_file *file, const struct drm_mode_fb_cmd2 *cmd) { const struct drm_format_info *info = drm_get_format_info(dev, cmd); if (info->num_planes != 1) return ERR_PTR(-EINVAL); return drm_gem_fb_create(dev, file, cmd); } static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = { .fb_create = mtk_drm_mode_fb_create, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, }; static const unsigned int mt2701_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_BLS, DDP_COMPONENT_DSI0, }; static const unsigned int mt2701_mtk_ddp_ext[] = { DDP_COMPONENT_RDMA1, DDP_COMPONENT_DPI0, }; static const unsigned int mt7623_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_BLS, DDP_COMPONENT_DPI0, }; static const unsigned int mt7623_mtk_ddp_ext[] = { DDP_COMPONENT_RDMA1, DDP_COMPONENT_DSI0, }; static const unsigned int mt2712_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_AAL0, DDP_COMPONENT_OD0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_DPI0, DDP_COMPONENT_PWM0, }; static const unsigned int mt2712_mtk_ddp_ext[] = { DDP_COMPONENT_OVL1, DDP_COMPONENT_COLOR1, DDP_COMPONENT_AAL1, DDP_COMPONENT_OD1, DDP_COMPONENT_RDMA1, DDP_COMPONENT_DPI1, DDP_COMPONENT_PWM1, }; static const unsigned int mt2712_mtk_ddp_third[] = { DDP_COMPONENT_RDMA2, DDP_COMPONENT_DSI3, DDP_COMPONENT_PWM2, }; static unsigned int mt8167_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_CCORR, DDP_COMPONENT_AAL0, DDP_COMPONENT_GAMMA, DDP_COMPONENT_DITHER0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_DSI0, }; static const unsigned int mt8173_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_AAL0, DDP_COMPONENT_OD0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_UFOE, DDP_COMPONENT_DSI0, DDP_COMPONENT_PWM0, }; static const unsigned int mt8173_mtk_ddp_ext[] = { DDP_COMPONENT_OVL1, DDP_COMPONENT_COLOR1, DDP_COMPONENT_GAMMA, DDP_COMPONENT_RDMA1, DDP_COMPONENT_DPI0, }; static const unsigned int mt8183_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_OVL_2L0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_CCORR, DDP_COMPONENT_AAL0, DDP_COMPONENT_GAMMA, DDP_COMPONENT_DITHER0, DDP_COMPONENT_DSI0, }; static const unsigned int mt8183_mtk_ddp_ext[] = { DDP_COMPONENT_OVL_2L1, DDP_COMPONENT_RDMA1, DDP_COMPONENT_DPI0, }; static const unsigned int mt8186_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_CCORR, DDP_COMPONENT_AAL0, DDP_COMPONENT_GAMMA, DDP_COMPONENT_POSTMASK0, DDP_COMPONENT_DITHER0, DDP_COMPONENT_DSI0, }; static const unsigned int mt8186_mtk_ddp_ext[] = { DDP_COMPONENT_OVL_2L0, DDP_COMPONENT_RDMA1, DDP_COMPONENT_DPI0, }; static const unsigned int mt8188_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_CCORR, DDP_COMPONENT_AAL0, DDP_COMPONENT_GAMMA, DDP_COMPONENT_POSTMASK0, DDP_COMPONENT_DITHER0, }; static const struct mtk_drm_route mt8188_mtk_ddp_main_routes[] = { {0, DDP_COMPONENT_DP_INTF0}, {0, DDP_COMPONENT_DSI0}, }; static const unsigned int mt8192_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_OVL_2L0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_CCORR, DDP_COMPONENT_AAL0, DDP_COMPONENT_GAMMA, DDP_COMPONENT_POSTMASK0, DDP_COMPONENT_DITHER0, DDP_COMPONENT_DSI0, }; static const unsigned int mt8192_mtk_ddp_ext[] = { DDP_COMPONENT_OVL_2L2, DDP_COMPONENT_RDMA4, DDP_COMPONENT_DPI0, }; static const unsigned int mt8195_mtk_ddp_main[] = { DDP_COMPONENT_OVL0, DDP_COMPONENT_RDMA0, DDP_COMPONENT_COLOR0, DDP_COMPONENT_CCORR, DDP_COMPONENT_AAL0, DDP_COMPONENT_GAMMA, DDP_COMPONENT_DITHER0, DDP_COMPONENT_DSC0, DDP_COMPONENT_MERGE0, DDP_COMPONENT_DP_INTF0, }; static const unsigned int mt8195_mtk_ddp_ext[] = { DDP_COMPONENT_DRM_OVL_ADAPTOR, DDP_COMPONENT_MERGE5, DDP_COMPONENT_DP_INTF1, }; static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = { .main_path = mt2701_mtk_ddp_main, .main_len = ARRAY_SIZE(mt2701_mtk_ddp_main), .ext_path = mt2701_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext), .shadow_register = true, .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt7623_mmsys_driver_data = { .main_path = mt7623_mtk_ddp_main, .main_len = ARRAY_SIZE(mt7623_mtk_ddp_main), .ext_path = mt7623_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt7623_mtk_ddp_ext), .shadow_register = true, .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = { .main_path = mt2712_mtk_ddp_main, .main_len = ARRAY_SIZE(mt2712_mtk_ddp_main), .ext_path = mt2712_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext), .third_path = mt2712_mtk_ddp_third, .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third), .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8167_mmsys_driver_data = { .main_path = mt8167_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8167_mtk_ddp_main), .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = { .main_path = mt8173_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main), .ext_path = mt8173_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext), .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = { .main_path = mt8183_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8183_mtk_ddp_main), .ext_path = mt8183_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt8183_mtk_ddp_ext), .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = { .main_path = mt8186_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8186_mtk_ddp_main), .ext_path = mt8186_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt8186_mtk_ddp_ext), .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = { .main_path = mt8188_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8188_mtk_ddp_main), .conn_routes = mt8188_mtk_ddp_main_routes, .num_conn_routes = ARRAY_SIZE(mt8188_mtk_ddp_main_routes), .mmsys_dev_num = 2, .max_width = 8191, .min_width = 1, .min_height = 1, }; static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = { .main_path = mt8192_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8192_mtk_ddp_main), .ext_path = mt8192_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt8192_mtk_ddp_ext), .mmsys_dev_num = 1, }; static const struct mtk_mmsys_driver_data mt8195_vdosys0_driver_data = { .main_path = mt8195_mtk_ddp_main, .main_len = ARRAY_SIZE(mt8195_mtk_ddp_main), .mmsys_dev_num = 2, .max_width = 8191, .min_width = 1, .min_height = 1, }; static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = { .ext_path = mt8195_mtk_ddp_ext, .ext_len = ARRAY_SIZE(mt8195_mtk_ddp_ext), .mmsys_id = 1, .mmsys_dev_num = 2, .max_width = 8191, .min_width = 2, /* 2-pixel align when ethdr is bypassed */ .min_height = 1, }; static const struct of_device_id mtk_drm_of_ids[] = { { .compatible = "mediatek,mt2701-mmsys", .data = &mt2701_mmsys_driver_data}, { .compatible = "mediatek,mt7623-mmsys", .data = &mt7623_mmsys_driver_data}, { .compatible = "mediatek,mt2712-mmsys", .data = &mt2712_mmsys_driver_data}, { .compatible = "mediatek,mt8167-mmsys", .data = &mt8167_mmsys_driver_data}, { .compatible = "mediatek,mt8173-mmsys", .data = &mt8173_mmsys_driver_data}, { .compatible = "mediatek,mt8183-mmsys", .data = &mt8183_mmsys_driver_data}, { .compatible = "mediatek,mt8186-mmsys", .data = &mt8186_mmsys_driver_data}, { .compatible = "mediatek,mt8188-vdosys0", .data = &mt8188_vdosys0_driver_data}, { .compatible = "mediatek,mt8188-vdosys1", .data = &mt8195_vdosys1_driver_data}, { .compatible = "mediatek,mt8192-mmsys", .data = &mt8192_mmsys_driver_data}, { .compatible = "mediatek,mt8195-mmsys", .data = &mt8195_vdosys0_driver_data}, { .compatible = "mediatek,mt8195-vdosys0", .data = &mt8195_vdosys0_driver_data}, { .compatible = "mediatek,mt8195-vdosys1", .data = &mt8195_vdosys1_driver_data}, { } }; MODULE_DEVICE_TABLE(of, mtk_drm_of_ids); static int mtk_drm_match(struct device *dev, void *data) { if (!strncmp(dev_name(dev), "mediatek-drm", sizeof("mediatek-drm") - 1)) return true; return false; } static bool mtk_drm_get_all_drm_priv(struct device *dev) { struct mtk_drm_private *drm_priv = dev_get_drvdata(dev); struct mtk_drm_private *all_drm_priv[MAX_CRTC]; struct mtk_drm_private *temp_drm_priv; struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; struct device *drm_dev; unsigned int cnt = 0; int i, j; for_each_child_of_node_scoped(phandle->parent, node) { struct platform_device *pdev; of_id = of_match_node(mtk_drm_of_ids, node); if (!of_id) continue; pdev = of_find_device_by_node(node); if (!pdev) continue; drm_dev = device_find_child(&pdev->dev, NULL, mtk_drm_match); if (!drm_dev) continue; temp_drm_priv = dev_get_drvdata(drm_dev); if (!temp_drm_priv) continue; if (temp_drm_priv->data->main_len) all_drm_priv[CRTC_MAIN] = temp_drm_priv; else if (temp_drm_priv->data->ext_len) all_drm_priv[CRTC_EXT] = temp_drm_priv; else if (temp_drm_priv->data->third_len) all_drm_priv[CRTC_THIRD] = temp_drm_priv; if (temp_drm_priv->mtk_drm_bound) cnt++; if (cnt == MAX_CRTC) break; } if (drm_priv->data->mmsys_dev_num == cnt) { for (i = 0; i < cnt; i++) for (j = 0; j < cnt; j++) all_drm_priv[j]->all_drm_private[i] = all_drm_priv[i]; return true; } return false; } static bool mtk_drm_find_mmsys_comp(struct mtk_drm_private *private, int comp_id) { const struct mtk_mmsys_driver_data *drv_data = private->data; int i; if (drv_data->main_path) for (i = 0; i < drv_data->main_len; i++) if (drv_data->main_path[i] == comp_id) return true; if (drv_data->ext_path) for (i = 0; i < drv_data->ext_len; i++) if (drv_data->ext_path[i] == comp_id) return true; if (drv_data->third_path) for (i = 0; i < drv_data->third_len; i++) if (drv_data->third_path[i] == comp_id) return true; if (drv_data->num_conn_routes) for (i = 0; i < drv_data->num_conn_routes; i++) if (drv_data->conn_routes[i].route_ddp == comp_id) return true; return false; } static int mtk_drm_kms_init(struct drm_device *drm) { struct mtk_drm_private *private = drm->dev_private; struct mtk_drm_private *priv_n; struct device *dma_dev = NULL; struct drm_crtc *crtc; int ret, i, j; if (drm_firmware_drivers_only()) return -ENODEV; ret = drmm_mode_config_init(drm); if (ret) goto put_mutex_dev; drm->mode_config.min_width = 64; drm->mode_config.min_height = 64; /* * set max width and height as default value(4096x4096). * this value would be used to check framebuffer size limitation * at drm_mode_addfb(). */ drm->mode_config.max_width = 4096; drm->mode_config.max_height = 4096; drm->mode_config.funcs = &mtk_drm_mode_config_funcs; drm->mode_config.helper_private = &mtk_drm_mode_config_helpers; for (i = 0; i < private->data->mmsys_dev_num; i++) { drm->dev_private = private->all_drm_private[i]; ret = component_bind_all(private->all_drm_private[i]->dev, drm); if (ret) goto put_mutex_dev; } /* * Ensure internal panels are at the top of the connector list before * crtc creation. */ drm_helper_move_panel_connectors_to_head(drm); /* * 1. We currently support two fixed data streams, each optional, * and each statically assigned to a crtc: * OVL0 -> COLOR0 -> AAL -> OD -> RDMA0 -> UFOE -> DSI0 ... * 2. For multi mmsys architecture, crtc path data are located in * different drm private data structures. Loop through crtc index to * create crtc from the main path and then ext_path and finally the * third path. */ for (i = 0; i < MAX_CRTC; i++) { for (j = 0; j < private->data->mmsys_dev_num; j++) { priv_n = private->all_drm_private[j]; if (priv_n->data->max_width) drm->mode_config.max_width = priv_n->data->max_width; if (priv_n->data->min_width) drm->mode_config.min_width = priv_n->data->min_width; if (priv_n->data->min_height) drm->mode_config.min_height = priv_n->data->min_height; if (i == CRTC_MAIN && priv_n->data->main_len) { ret = mtk_crtc_create(drm, priv_n->data->main_path, priv_n->data->main_len, j, priv_n->data->conn_routes, priv_n->data->num_conn_routes); if (ret) goto err_component_unbind; continue; } else if (i == CRTC_EXT && priv_n->data->ext_len) { ret = mtk_crtc_create(drm, priv_n->data->ext_path, priv_n->data->ext_len, j, NULL, 0); if (ret) goto err_component_unbind; continue; } else if (i == CRTC_THIRD && priv_n->data->third_len) { ret = mtk_crtc_create(drm, priv_n->data->third_path, priv_n->data->third_len, j, NULL, 0); if (ret) goto err_component_unbind; continue; } } } /* IGT will check if the cursor size is configured */ drm->mode_config.cursor_width = 512; drm->mode_config.cursor_height = 512; /* Use OVL device for all DMA memory allocations */ crtc = drm_crtc_from_index(drm, 0); if (crtc) dma_dev = mtk_crtc_dma_dev_get(crtc); if (!dma_dev) { ret = -ENODEV; dev_err(drm->dev, "Need at least one OVL device\n"); goto err_component_unbind; } for (i = 0; i < private->data->mmsys_dev_num; i++) private->all_drm_private[i]->dma_dev = dma_dev; /* * Configure the DMA segment size to make sure we get contiguous IOVA * when importing PRIME buffers. */ dma_set_max_seg_size(dma_dev, UINT_MAX); ret = drm_vblank_init(drm, MAX_CRTC); if (ret < 0) goto err_component_unbind; drm_kms_helper_poll_init(drm); drm_mode_config_reset(drm); return 0; err_component_unbind: for (i = 0; i < private->data->mmsys_dev_num; i++) component_unbind_all(private->all_drm_private[i]->dev, drm); put_mutex_dev: for (i = 0; i < private->data->mmsys_dev_num; i++) put_device(private->all_drm_private[i]->mutex_dev); return ret; } static void mtk_drm_kms_deinit(struct drm_device *drm) { drm_kms_helper_poll_fini(drm); drm_atomic_helper_shutdown(drm); component_unbind_all(drm->dev, drm); } DEFINE_DRM_GEM_FOPS(mtk_drm_fops); /* * We need to override this because the device used to import the memory is * not dev->dev, as drm_gem_prime_import() expects. */ static struct drm_gem_object *mtk_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) { struct mtk_drm_private *private = dev->dev_private; return drm_gem_prime_import_dev(dev, dma_buf, private->dma_dev); } static const struct drm_driver mtk_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, .dumb_create = mtk_gem_dumb_create, DRM_FBDEV_DMA_DRIVER_OPS, .gem_prime_import = mtk_gem_prime_import, .gem_prime_import_sg_table = mtk_gem_prime_import_sg_table, .fops = &mtk_drm_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, }; static int compare_dev(struct device *dev, void *data) { return dev == (struct device *)data; } static int mtk_drm_bind(struct device *dev) { struct mtk_drm_private *private = dev_get_drvdata(dev); struct platform_device *pdev; struct drm_device *drm; int ret, i; pdev = of_find_device_by_node(private->mutex_node); if (!pdev) { dev_err(dev, "Waiting for disp-mutex device %pOF\n", private->mutex_node); of_node_put(private->mutex_node); return -EPROBE_DEFER; } private->mutex_dev = &pdev->dev; private->mtk_drm_bound = true; private->dev = dev; if (!mtk_drm_get_all_drm_priv(dev)) return 0; drm = drm_dev_alloc(&mtk_drm_driver, dev); if (IS_ERR(drm)) return PTR_ERR(drm); private->drm_master = true; drm->dev_private = private; for (i = 0; i < private->data->mmsys_dev_num; i++) private->all_drm_private[i]->drm = drm; ret = mtk_drm_kms_init(drm); if (ret < 0) goto err_free; ret = drm_dev_register(drm, 0); if (ret < 0) goto err_deinit; drm_client_setup(drm, NULL); return 0; err_deinit: mtk_drm_kms_deinit(drm); err_free: private->drm = NULL; drm_dev_put(drm); return ret; } static void mtk_drm_unbind(struct device *dev) { struct mtk_drm_private *private = dev_get_drvdata(dev); /* for multi mmsys dev, unregister drm dev in mmsys master */ if (private->drm_master) { drm_dev_unregister(private->drm); mtk_drm_kms_deinit(private->drm); drm_dev_put(private->drm); } private->mtk_drm_bound = false; private->drm_master = false; private->drm = NULL; } static const struct component_master_ops mtk_drm_ops = { .bind = mtk_drm_bind, .unbind = mtk_drm_unbind, }; static const struct of_device_id mtk_ddp_comp_dt_ids[] = { { .compatible = "mediatek,mt8167-disp-aal", .data = (void *)MTK_DISP_AAL}, { .compatible = "mediatek,mt8173-disp-aal", .data = (void *)MTK_DISP_AAL}, { .compatible = "mediatek,mt8183-disp-aal", .data = (void *)MTK_DISP_AAL}, { .compatible = "mediatek,mt8192-disp-aal", .data = (void *)MTK_DISP_AAL}, { .compatible = "mediatek,mt8167-disp-ccorr", .data = (void *)MTK_DISP_CCORR }, { .compatible = "mediatek,mt8183-disp-ccorr", .data = (void *)MTK_DISP_CCORR }, { .compatible = "mediatek,mt8192-disp-ccorr", .data = (void *)MTK_DISP_CCORR }, { .compatible = "mediatek,mt2701-disp-color", .data = (void *)MTK_DISP_COLOR }, { .compatible = "mediatek,mt8167-disp-color", .data = (void *)MTK_DISP_COLOR }, { .compatible = "mediatek,mt8173-disp-color", .data = (void *)MTK_DISP_COLOR }, { .compatible = "mediatek,mt8167-disp-dither", .data = (void *)MTK_DISP_DITHER }, { .compatible = "mediatek,mt8183-disp-dither", .data = (void *)MTK_DISP_DITHER }, { .compatible = "mediatek,mt8195-disp-dsc", .data = (void *)MTK_DISP_DSC }, { .compatible = "mediatek,mt8167-disp-gamma", .data = (void *)MTK_DISP_GAMMA, }, { .compatible = "mediatek,mt8173-disp-gamma", .data = (void *)MTK_DISP_GAMMA, }, { .compatible = "mediatek,mt8183-disp-gamma", .data = (void *)MTK_DISP_GAMMA, }, { .compatible = "mediatek,mt8195-disp-gamma", .data = (void *)MTK_DISP_GAMMA, }, { .compatible = "mediatek,mt8195-disp-merge", .data = (void *)MTK_DISP_MERGE }, { .compatible = "mediatek,mt2701-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt2712-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8167-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8173-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8183-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8186-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8188-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8192-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8195-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8173-disp-od", .data = (void *)MTK_DISP_OD }, { .compatible = "mediatek,mt2701-disp-ovl", .data = (void *)MTK_DISP_OVL }, { .compatible = "mediatek,mt8167-disp-ovl", .data = (void *)MTK_DISP_OVL }, { .compatible = "mediatek,mt8173-disp-ovl", .data = (void *)MTK_DISP_OVL }, { .compatible = "mediatek,mt8183-disp-ovl", .data = (void *)MTK_DISP_OVL }, { .compatible = "mediatek,mt8192-disp-ovl", .data = (void *)MTK_DISP_OVL }, { .compatible = "mediatek,mt8195-disp-ovl", .data = (void *)MTK_DISP_OVL }, { .compatible = "mediatek,mt8183-disp-ovl-2l", .data = (void *)MTK_DISP_OVL_2L }, { .compatible = "mediatek,mt8192-disp-ovl-2l", .data = (void *)MTK_DISP_OVL_2L }, { .compatible = "mediatek,mt8192-disp-postmask", .data = (void *)MTK_DISP_POSTMASK }, { .compatible = "mediatek,mt2701-disp-pwm", .data = (void *)MTK_DISP_BLS }, { .compatible = "mediatek,mt8167-disp-pwm", .data = (void *)MTK_DISP_PWM }, { .compatible = "mediatek,mt8173-disp-pwm", .data = (void *)MTK_DISP_PWM }, { .compatible = "mediatek,mt2701-disp-rdma", .data = (void *)MTK_DISP_RDMA }, { .compatible = "mediatek,mt8167-disp-rdma", .data = (void *)MTK_DISP_RDMA }, { .compatible = "mediatek,mt8173-disp-rdma", .data = (void *)MTK_DISP_RDMA }, { .compatible = "mediatek,mt8183-disp-rdma", .data = (void *)MTK_DISP_RDMA }, { .compatible = "mediatek,mt8195-disp-rdma", .data = (void *)MTK_DISP_RDMA }, { .compatible = "mediatek,mt8173-disp-ufoe", .data = (void *)MTK_DISP_UFOE }, { .compatible = "mediatek,mt8173-disp-wdma", .data = (void *)MTK_DISP_WDMA }, { .compatible = "mediatek,mt2701-dpi", .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt8167-dsi", .data = (void *)MTK_DSI }, { .compatible = "mediatek,mt8173-dpi", .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt8183-dpi", .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt8186-dpi", .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt8188-dp-intf", .data = (void *)MTK_DP_INTF }, { .compatible = "mediatek,mt8192-dpi", .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt8195-dp-intf", .data = (void *)MTK_DP_INTF }, { .compatible = "mediatek,mt2701-dsi", .data = (void *)MTK_DSI }, { .compatible = "mediatek,mt8173-dsi", .data = (void *)MTK_DSI }, { .compatible = "mediatek,mt8183-dsi", .data = (void *)MTK_DSI }, { .compatible = "mediatek,mt8186-dsi", .data = (void *)MTK_DSI }, { .compatible = "mediatek,mt8188-dsi", .data = (void *)MTK_DSI }, { } }; static int mtk_drm_of_get_ddp_comp_type(struct device_node *node, enum mtk_ddp_comp_type *ctype) { const struct of_device_id *of_id = of_match_node(mtk_ddp_comp_dt_ids, node); if (!of_id) return -EINVAL; *ctype = (enum mtk_ddp_comp_type)((uintptr_t)of_id->data); return 0; } static int mtk_drm_of_get_ddp_ep_cid(struct device_node *node, int output_port, enum mtk_crtc_path crtc_path, struct device_node **next, unsigned int *cid) { struct device_node *ep_dev_node, *ep_out; enum mtk_ddp_comp_type comp_type; int ret; ep_out = of_graph_get_endpoint_by_regs(node, output_port, crtc_path); if (!ep_out) return -ENOENT; ep_dev_node = of_graph_get_remote_port_parent(ep_out); of_node_put(ep_out); if (!ep_dev_node) return -EINVAL; /* * Pass the next node pointer regardless of failures in the later code * so that if this function is called in a loop it will walk through all * of the subsequent endpoints anyway. */ *next = ep_dev_node; if (!of_device_is_available(ep_dev_node)) return -ENODEV; ret = mtk_drm_of_get_ddp_comp_type(ep_dev_node, &comp_type); if (ret) { if (mtk_ovl_adaptor_is_comp_present(ep_dev_node)) { *cid = (unsigned int)DDP_COMPONENT_DRM_OVL_ADAPTOR; return 0; } return ret; } ret = mtk_ddp_comp_get_id(ep_dev_node, comp_type); if (ret < 0) return ret; /* All ok! Pass the Component ID to the caller. */ *cid = (unsigned int)ret; return 0; } /** * mtk_drm_of_ddp_path_build_one - Build a Display HW Pipeline for a CRTC Path * @dev: The mediatek-drm device * @cpath: CRTC Path relative to a VDO or MMSYS * @out_path: Pointer to an array that will contain the new pipeline * @out_path_len: Number of entries in the pipeline array * * MediaTek SoCs can use different DDP hardware pipelines (or paths) depending * on the board-specific desired display configuration; this function walks * through all of the output endpoints starting from a VDO or MMSYS hardware * instance and builds the right pipeline as specified in device trees. * * Return: * * %0 - Display HW Pipeline successfully built and validated * * %-ENOENT - Display pipeline was not specified in device tree * * %-EINVAL - Display pipeline built but validation failed * * %-ENOMEM - Failure to allocate pipeline array to pass to the caller */ static int mtk_drm_of_ddp_path_build_one(struct device *dev, enum mtk_crtc_path cpath, const unsigned int **out_path, unsigned int *out_path_len) { struct device_node *next, *prev, *vdo = dev->parent->of_node; unsigned int temp_path[DDP_COMPONENT_DRM_ID_MAX] = { 0 }; unsigned int *final_ddp_path; unsigned short int idx = 0; bool ovl_adaptor_comp_added = false; int ret; /* Get the first entry for the temp_path array */ ret = mtk_drm_of_get_ddp_ep_cid(vdo, 0, cpath, &next, &temp_path[idx]); if (ret) { if (next && temp_path[idx] == DDP_COMPONENT_DRM_OVL_ADAPTOR) { dev_dbg(dev, "Adding OVL Adaptor for %pOF\n", next); ovl_adaptor_comp_added = true; } else { if (next) dev_err(dev, "Invalid component %pOF\n", next); else dev_err(dev, "Cannot find first endpoint for path %d\n", cpath); return ret; } } idx++; /* * Walk through port outputs until we reach the last valid mediatek-drm component. * To be valid, this must end with an "invalid" component that is a display node. */ do { prev = next; ret = mtk_drm_of_get_ddp_ep_cid(next, 1, cpath, &next, &temp_path[idx]); of_node_put(prev); if (ret) { of_node_put(next); break; } /* * If this is an OVL adaptor exclusive component and one of those * was already added, don't add another instance of the generic * DDP_COMPONENT_OVL_ADAPTOR, as this is used only to decide whether * to probe that component master driver of which only one instance * is needed and possible. */ if (temp_path[idx] == DDP_COMPONENT_DRM_OVL_ADAPTOR) { if (!ovl_adaptor_comp_added) ovl_adaptor_comp_added = true; else idx--; } } while (++idx < DDP_COMPONENT_DRM_ID_MAX); /* * The device component might not be enabled: in that case, don't * check the last entry and just report that the device is missing. */ if (ret == -ENODEV) return ret; /* If the last entry is not a final display output, the configuration is wrong */ switch (temp_path[idx - 1]) { case DDP_COMPONENT_DP_INTF0: case DDP_COMPONENT_DP_INTF1: case DDP_COMPONENT_DPI0: case DDP_COMPONENT_DPI1: case DDP_COMPONENT_DSI0: case DDP_COMPONENT_DSI1: case DDP_COMPONENT_DSI2: case DDP_COMPONENT_DSI3: break; default: dev_err(dev, "Invalid display hw pipeline. Last component: %d (ret=%d)\n", temp_path[idx - 1], ret); return -EINVAL; } final_ddp_path = devm_kmemdup(dev, temp_path, idx * sizeof(temp_path[0]), GFP_KERNEL); if (!final_ddp_path) return -ENOMEM; dev_dbg(dev, "Display HW Pipeline built with %d components.\n", idx); /* Pipeline built! */ *out_path = final_ddp_path; *out_path_len = idx; return 0; } static int mtk_drm_of_ddp_path_build(struct device *dev, struct device_node *node, struct mtk_mmsys_driver_data *data) { struct device_node *ep_node; struct of_endpoint of_ep; bool output_present[MAX_CRTC] = { false }; int ret; for_each_endpoint_of_node(node, ep_node) { ret = of_graph_parse_endpoint(ep_node, &of_ep); if (ret) { dev_err_probe(dev, ret, "Cannot parse endpoint\n"); break; } if (of_ep.id >= MAX_CRTC) { ret = dev_err_probe(dev, -EINVAL, "Invalid endpoint%u number\n", of_ep.port); break; } output_present[of_ep.id] = true; } if (ret) { of_node_put(ep_node); return ret; } if (output_present[CRTC_MAIN]) { ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_MAIN, &data->main_path, &data->main_len); if (ret && ret != -ENODEV) return ret; } if (output_present[CRTC_EXT]) { ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_EXT, &data->ext_path, &data->ext_len); if (ret && ret != -ENODEV) return ret; } if (output_present[CRTC_THIRD]) { ret = mtk_drm_of_ddp_path_build_one(dev, CRTC_THIRD, &data->third_path, &data->third_len); if (ret && ret != -ENODEV) return ret; } return 0; } static int mtk_drm_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; struct mtk_drm_private *private; struct mtk_mmsys_driver_data *mtk_drm_data; struct device_node *node; struct component_match *match = NULL; struct platform_device *ovl_adaptor; int ret; int i; private = devm_kzalloc(dev, sizeof(*private), GFP_KERNEL); if (!private) return -ENOMEM; private->mmsys_dev = dev->parent; if (!private->mmsys_dev) { dev_err(dev, "Failed to get MMSYS device\n"); return -ENODEV; } of_id = of_match_node(mtk_drm_of_ids, phandle); if (!of_id) return -ENODEV; mtk_drm_data = (struct mtk_mmsys_driver_data *)of_id->data; if (!mtk_drm_data) return -EINVAL; /* Try to build the display pipeline from devicetree graphs */ if (of_graph_is_present(phandle)) { dev_dbg(dev, "Building display pipeline for MMSYS %u\n", mtk_drm_data->mmsys_id); private->data = devm_kmemdup(dev, mtk_drm_data, sizeof(*mtk_drm_data), GFP_KERNEL); if (!private->data) return -ENOMEM; ret = mtk_drm_of_ddp_path_build(dev, phandle, private->data); if (ret) return ret; } else { /* No devicetree graphs support: go with hardcoded paths if present */ dev_dbg(dev, "Using hardcoded paths for MMSYS %u\n", mtk_drm_data->mmsys_id); private->data = mtk_drm_data; }; private->all_drm_private = devm_kmalloc_array(dev, private->data->mmsys_dev_num, sizeof(*private->all_drm_private), GFP_KERNEL); if (!private->all_drm_private) return -ENOMEM; /* Bringup ovl_adaptor */ if (mtk_drm_find_mmsys_comp(private, DDP_COMPONENT_DRM_OVL_ADAPTOR)) { ovl_adaptor = platform_device_register_data(dev, "mediatek-disp-ovl-adaptor", PLATFORM_DEVID_AUTO, (void *)private->mmsys_dev, sizeof(*private->mmsys_dev)); private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR].dev = &ovl_adaptor->dev; mtk_ddp_comp_init(NULL, &private->ddp_comp[DDP_COMPONENT_DRM_OVL_ADAPTOR], DDP_COMPONENT_DRM_OVL_ADAPTOR); component_match_add(dev, &match, compare_dev, &ovl_adaptor->dev); } /* Iterate over sibling DISP function blocks */ for_each_child_of_node(phandle->parent, node) { enum mtk_ddp_comp_type comp_type; int comp_id; ret = mtk_drm_of_get_ddp_comp_type(node, &comp_type); if (ret) continue; if (!of_device_is_available(node)) { dev_dbg(dev, "Skipping disabled component %pOF\n", node); continue; } if (comp_type == MTK_DISP_MUTEX) { int id; id = of_alias_get_id(node, "mutex"); if (id < 0 || id == private->data->mmsys_id) { private->mutex_node = of_node_get(node); dev_dbg(dev, "get mutex for mmsys %d", private->data->mmsys_id); } continue; } comp_id = mtk_ddp_comp_get_id(node, comp_type); if (comp_id < 0) { dev_warn(dev, "Skipping unknown component %pOF\n", node); continue; } if (!mtk_drm_find_mmsys_comp(private, comp_id)) continue; private->comp_node[comp_id] = of_node_get(node); /* * Currently only the AAL, CCORR, COLOR, GAMMA, MERGE, OVL, RDMA, DSI, and DPI * blocks have separate component platform drivers and initialize their own * DDP component structure. The others are initialized here. */ if (comp_type == MTK_DISP_AAL || comp_type == MTK_DISP_CCORR || comp_type == MTK_DISP_COLOR || comp_type == MTK_DISP_GAMMA || comp_type == MTK_DISP_MERGE || comp_type == MTK_DISP_OVL || comp_type == MTK_DISP_OVL_2L || comp_type == MTK_DISP_OVL_ADAPTOR || comp_type == MTK_DISP_RDMA || comp_type == MTK_DP_INTF || comp_type == MTK_DPI || comp_type == MTK_DSI) { dev_info(dev, "Adding component match for %pOF\n", node); drm_of_component_match_add(dev, &match, component_compare_of, node); } ret = mtk_ddp_comp_init(node, &private->ddp_comp[comp_id], comp_id); if (ret) { of_node_put(node); goto err_node; } } if (!private->mutex_node) { dev_err(dev, "Failed to find disp-mutex node\n"); ret = -ENODEV; goto err_node; } pm_runtime_enable(dev); platform_set_drvdata(pdev, private); ret = component_master_add_with_match(dev, &mtk_drm_ops, match); if (ret) goto err_pm; return 0; err_pm: pm_runtime_disable(dev); err_node: of_node_put(private->mutex_node); for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++) of_node_put(private->comp_node[i]); return ret; } static void mtk_drm_remove(struct platform_device *pdev) { struct mtk_drm_private *private = platform_get_drvdata(pdev); int i; component_master_del(&pdev->dev, &mtk_drm_ops); pm_runtime_disable(&pdev->dev); of_node_put(private->mutex_node); for (i = 0; i < DDP_COMPONENT_DRM_ID_MAX; i++) of_node_put(private->comp_node[i]); } static void mtk_drm_shutdown(struct platform_device *pdev) { struct mtk_drm_private *private = platform_get_drvdata(pdev); drm_atomic_helper_shutdown(private->drm); } static int mtk_drm_sys_prepare(struct device *dev) { struct mtk_drm_private *private = dev_get_drvdata(dev); struct drm_device *drm = private->drm; if (private->drm_master) return drm_mode_config_helper_suspend(drm); else return 0; } static void mtk_drm_sys_complete(struct device *dev) { struct mtk_drm_private *private = dev_get_drvdata(dev); struct drm_device *drm = private->drm; int ret = 0; if (private->drm_master) ret = drm_mode_config_helper_resume(drm); if (ret) dev_err(dev, "Failed to resume\n"); } static const struct dev_pm_ops mtk_drm_pm_ops = { .prepare = mtk_drm_sys_prepare, .complete = mtk_drm_sys_complete, }; static struct platform_driver mtk_drm_platform_driver = { .probe = mtk_drm_probe, .remove = mtk_drm_remove, .shutdown = mtk_drm_shutdown, .driver = { .name = "mediatek-drm", .pm = &mtk_drm_pm_ops, }, }; static struct platform_driver * const mtk_drm_drivers[] = { &mtk_disp_aal_driver, &mtk_disp_ccorr_driver, &mtk_disp_color_driver, &mtk_disp_gamma_driver, &mtk_disp_merge_driver, &mtk_disp_ovl_adaptor_driver, &mtk_disp_ovl_driver, &mtk_disp_rdma_driver, &mtk_dpi_driver, &mtk_drm_platform_driver, &mtk_dsi_driver, &mtk_ethdr_driver, &mtk_mdp_rdma_driver, &mtk_padding_driver, }; static int __init mtk_drm_init(void) { return platform_register_drivers(mtk_drm_drivers, ARRAY_SIZE(mtk_drm_drivers)); } static void __exit mtk_drm_exit(void) { platform_unregister_drivers(mtk_drm_drivers, ARRAY_SIZE(mtk_drm_drivers)); } module_init(mtk_drm_init); module_exit(mtk_drm_exit); MODULE_AUTHOR("YT SHEN "); MODULE_DESCRIPTION("Mediatek SoC DRM driver"); MODULE_LICENSE("GPL v2");