diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_drm_drv.c | 384 |
1 files changed, 342 insertions, 42 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 74832c213092..7c0c12dde488 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -12,10 +12,11 @@ #include <linux/pm_runtime.h> #include <linux/dma-mapping.h> +#include <drm/clients/drm_client_setup.h> #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_drv.h> -#include <drm/drm_fbdev_generic.h> +#include <drm/drm_fbdev_dma.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem.h> #include <drm/drm_gem_framebuffer_helper.h> @@ -24,14 +25,14 @@ #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> -#include "mtk_drm_crtc.h" -#include "mtk_drm_ddp_comp.h" +#include "mtk_crtc.h" +#include "mtk_ddp_comp.h" +#include "mtk_disp_drv.h" #include "mtk_drm_drv.h" -#include "mtk_drm_gem.h" +#include "mtk_gem.h" #define DRIVER_NAME "mediatek" #define DRIVER_DESC "Mediatek SoC DRM" -#define DRIVER_DATE "20150513" #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0 @@ -294,6 +295,9 @@ static const struct mtk_mmsys_driver_data mt8188_vdosys0_driver_data = { .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 = { @@ -308,6 +312,9 @@ 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 = { @@ -315,6 +322,13 @@ static const struct mtk_mmsys_driver_data mt8195_vdosys1_driver_data = { .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 mtk_mmsys_driver_data mt8365_mmsys_driver_data = { + .mmsys_dev_num = 1, }; static const struct of_device_id mtk_drm_of_ids[] = { @@ -344,11 +358,13 @@ static const struct of_device_id mtk_drm_of_ids[] = { .data = &mt8195_vdosys0_driver_data}, { .compatible = "mediatek,mt8195-vdosys1", .data = &mt8195_vdosys1_driver_data}, + { .compatible = "mediatek,mt8365-mmsys", + .data = &mt8365_mmsys_driver_data}, { } }; MODULE_DEVICE_TABLE(of, mtk_drm_of_ids); -static int mtk_drm_match(struct device *dev, void *data) +static int mtk_drm_match(struct device *dev, const void *data) { if (!strncmp(dev_name(dev), "mediatek-drm", sizeof("mediatek-drm") - 1)) return true; @@ -396,8 +412,10 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) if (temp_drm_priv->mtk_drm_bound) cnt++; - if (cnt == MAX_CRTC) + if (cnt == MAX_CRTC) { + of_node_put(node); break; + } } if (drm_priv->data->mmsys_dev_num == cnt) { @@ -452,7 +470,7 @@ static int mtk_drm_kms_init(struct drm_device *drm) ret = drmm_mode_config_init(drm); if (ret) - goto put_mutex_dev; + return ret; drm->mode_config.min_width = 64; drm->mode_config.min_height = 64; @@ -470,8 +488,11 @@ static int mtk_drm_kms_init(struct drm_device *drm) 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; + if (ret) { + while (--i >= 0) + component_unbind_all(private->all_drm_private[i]->dev, drm); + return ret; + } } /* @@ -493,25 +514,34 @@ static int mtk_drm_kms_init(struct drm_device *drm) 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_drm_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); + 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_drm_crtc_create(drm, priv_n->data->ext_path, - priv_n->data->ext_len, j, NULL, 0); + 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_drm_crtc_create(drm, priv_n->data->third_path, - priv_n->data->third_len, j, NULL, 0); + ret = mtk_crtc_create(drm, priv_n->data->third_path, + priv_n->data->third_len, j, NULL, 0); if (ret) goto err_component_unbind; @@ -520,10 +550,14 @@ static int mtk_drm_kms_init(struct drm_device *drm) } } + /* 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_drm_crtc_dma_dev_get(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"); @@ -537,11 +571,7 @@ static int mtk_drm_kms_init(struct drm_device *drm) * Configure the DMA segment size to make sure we get contiguous IOVA * when importing PRIME buffers. */ - ret = dma_set_max_seg_size(dma_dev, UINT_MAX); - if (ret) { - dev_err(dma_dev, "Failed to set DMA segment size\n"); - goto err_component_unbind; - } + dma_set_max_seg_size(dma_dev, UINT_MAX); ret = drm_vblank_init(drm, MAX_CRTC); if (ret < 0) @@ -555,9 +585,6 @@ static int mtk_drm_kms_init(struct drm_device *drm) 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; } @@ -576,8 +603,8 @@ 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_drm_gem_prime_import(struct drm_device *dev, - struct dma_buf *dma_buf) +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; @@ -587,15 +614,15 @@ static struct drm_gem_object *mtk_drm_gem_prime_import(struct drm_device *dev, static const struct drm_driver mtk_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, - .dumb_create = mtk_drm_gem_dumb_create, + .dumb_create = mtk_gem_dumb_create, + DRM_FBDEV_DMA_DRIVER_OPS, - .gem_prime_import = mtk_drm_gem_prime_import, + .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, - .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, }; @@ -628,8 +655,10 @@ static int mtk_drm_bind(struct device *dev) return 0; drm = drm_dev_alloc(&mtk_drm_driver, dev); - if (IS_ERR(drm)) - return PTR_ERR(drm); + if (IS_ERR(drm)) { + ret = PTR_ERR(drm); + goto err_put_dev; + } private->drm_master = true; drm->dev_private = private; @@ -644,7 +673,7 @@ static int mtk_drm_bind(struct device *dev) if (ret < 0) goto err_deinit; - drm_fbdev_generic_setup(drm, 32); + drm_client_setup(drm, NULL); return 0; @@ -653,18 +682,33 @@ err_deinit: err_free: private->drm = NULL; drm_dev_put(drm); + for (i = 0; i < private->data->mmsys_dev_num; i++) + private->all_drm_private[i]->drm = NULL; +err_put_dev: + for (i = 0; i < private->data->mmsys_dev_num; i++) { + /* For device_find_child in mtk_drm_get_all_priv() */ + put_device(private->all_drm_private[i]->dev); + } + put_device(private->mutex_dev); return ret; } static void mtk_drm_unbind(struct device *dev) { struct mtk_drm_private *private = dev_get_drvdata(dev); + int i; /* 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); + + for (i = 0; i < private->data->mmsys_dev_num; i++) { + /* For device_find_child in mtk_drm_get_all_priv() */ + put_device(private->all_drm_private[i]->dev); + } + put_device(private->mutex_dev); } private->mtk_drm_bound = false; private->drm_master = false; @@ -709,6 +753,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = { .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", @@ -729,6 +775,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = { .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8195-disp-mutex", .data = (void *)MTK_DISP_MUTEX }, + { .compatible = "mediatek,mt8365-disp-mutex", + .data = (void *)MTK_DISP_MUTEX }, { .compatible = "mediatek,mt8173-disp-od", .data = (void *)MTK_DISP_OD }, { .compatible = "mediatek,mt2701-disp-ovl", @@ -741,6 +789,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = { .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", @@ -783,6 +833,8 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = { .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt8195-dp-intf", .data = (void *)MTK_DP_INTF }, + { .compatible = "mediatek,mt8195-dpi", + .data = (void *)MTK_DPI }, { .compatible = "mediatek,mt2701-dsi", .data = (void *)MTK_DSI }, { .compatible = "mediatek,mt8173-dsi", @@ -796,12 +848,235 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = { { } }; +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 = NULL, *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; @@ -822,7 +1097,27 @@ static int mtk_drm_probe(struct platform_device *pdev) if (!of_id) return -ENODEV; - private->data = of_id->data; + 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), @@ -844,12 +1139,11 @@ static int mtk_drm_probe(struct platform_device *pdev) /* Iterate over sibling DISP function blocks */ for_each_child_of_node(phandle->parent, node) { - const struct of_device_id *of_id; enum mtk_ddp_comp_type comp_type; int comp_id; - of_id = of_match_node(mtk_ddp_comp_dt_ids, node); - if (!of_id) + ret = mtk_drm_of_get_ddp_comp_type(node, &comp_type); + if (ret) continue; if (!of_device_is_available(node)) { @@ -858,8 +1152,6 @@ static int mtk_drm_probe(struct platform_device *pdev) continue; } - comp_type = (enum mtk_ddp_comp_type)(uintptr_t)of_id->data; - if (comp_type == MTK_DISP_MUTEX) { int id; @@ -950,6 +1242,13 @@ static void mtk_drm_remove(struct platform_device *pdev) 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); @@ -980,7 +1279,8 @@ static const struct dev_pm_ops mtk_drm_pm_ops = { static struct platform_driver mtk_drm_platform_driver = { .probe = mtk_drm_probe, - .remove_new = mtk_drm_remove, + .remove = mtk_drm_remove, + .shutdown = mtk_drm_shutdown, .driver = { .name = "mediatek-drm", .pm = &mtk_drm_pm_ops, |