// SPDX-License-Identifier: GPL-2.0+ /* * vsp1_drm.c -- R-Car VSP1 DRM/KMS Interface * * Copyright (C) 2015 Renesas Electronics Corporation * * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) */ #include #include #include #include #include #include #include "vsp1.h" #include "vsp1_brx.h" #include "vsp1_dl.h" #include "vsp1_drm.h" #include "vsp1_lif.h" #include "vsp1_pipe.h" #include "vsp1_rwpf.h" #include "vsp1_uif.h" #define BRX_NAME(e) (e)->type == VSP1_ENTITY_BRU ? "BRU" : "BRS" /* ----------------------------------------------------------------------------- * Interrupt Handling */ static void vsp1_du_pipeline_frame_end(struct vsp1_pipeline *pipe, unsigned int completion) { struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe); if (drm_pipe->du_complete) { struct vsp1_entity *uif = drm_pipe->uif; unsigned int status = completion & (VSP1_DU_STATUS_COMPLETE | VSP1_DU_STATUS_WRITEBACK); u32 crc; crc = uif ? vsp1_uif_get_crc(to_uif(&uif->subdev)) : 0; drm_pipe->du_complete(drm_pipe->du_private, status, crc); } if (completion & VSP1_DL_FRAME_END_INTERNAL) { drm_pipe->force_brx_release = false; wake_up(&drm_pipe->wait_queue); } } /* ----------------------------------------------------------------------------- * Pipeline Configuration */ /* * Insert the UIF in the pipeline between the prev and next entities. If no UIF * is available connect the two entities directly. */ static int vsp1_du_insert_uif(struct vsp1_device *vsp1, struct vsp1_pipeline *pipe, struct vsp1_entity *uif, struct vsp1_entity *prev, unsigned int prev_pad, struct vsp1_entity *next, unsigned int next_pad) { struct v4l2_subdev_format format; int ret; if (!uif) { /* * If there's no UIF to be inserted, connect the previous and * next entities directly. */ prev->sink = next; prev->sink_pad = next_pad; return 0; } prev->sink = uif; prev->sink_pad = UIF_PAD_SINK; memset(&format, 0, sizeof(format)); format.which = V4L2_SUBDEV_FORMAT_ACTIVE; format.pad = prev_pad; ret = v4l2_subdev_call(&prev->subdev, pad, get_fmt, NULL, &format); if (ret < 0) return ret; format.pad = UIF_PAD_SINK; ret = v4l2_subdev_call(&uif->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on UIF sink\n", __func__, format.format.width, format.format.height, format.format.code); /* * The UIF doesn't mangle the format between its sink and source pads, * so there is no need to retrieve the format on its source pad. */ uif->sink = next; uif->sink_pad = next_pad; return 0; } /* Setup one RPF and the connected BRx sink pad. */ static int vsp1_du_pipeline_setup_rpf(struct vsp1_device *vsp1, struct vsp1_pipeline *pipe, struct vsp1_rwpf *rpf, struct vsp1_entity *uif, unsigned int brx_input) { struct v4l2_subdev_selection sel; struct v4l2_subdev_format format; const struct v4l2_rect *crop; int ret; /* * Configure the format on the RPF sink pad and propagate it up to the * BRx sink pad. */ crop = &vsp1->drm->inputs[rpf->entity.index].crop; memset(&format, 0, sizeof(format)); format.which = V4L2_SUBDEV_FORMAT_ACTIVE; format.pad = RWPF_PAD_SINK; format.format.width = crop->width + crop->left; format.format.height = crop->height + crop->top; format.format.code = rpf->fmtinfo->mbus; format.format.field = V4L2_FIELD_NONE; ret = v4l2_subdev_call(&rpf->entity.subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on RPF%u sink\n", __func__, format.format.width, format.format.height, format.format.code, rpf->entity.index); memset(&sel, 0, sizeof(sel)); sel.which = V4L2_SUBDEV_FORMAT_ACTIVE; sel.pad = RWPF_PAD_SINK; sel.target = V4L2_SEL_TGT_CROP; sel.r = *crop; ret = v4l2_subdev_call(&rpf->entity.subdev, pad, set_selection, NULL, &sel); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set selection (%u,%u)/%ux%u on RPF%u sink\n", __func__, sel.r.left, sel.r.top, sel.r.width, sel.r.height, rpf->entity.index); /* * RPF source, hardcode the format to ARGB8888 to turn on format * conversion if needed. */ format.pad = RWPF_PAD_SOURCE; ret = v4l2_subdev_call(&rpf->entity.subdev, pad, get_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: got format %ux%u (%x) on RPF%u source\n", __func__, format.format.width, format.format.height, format.format.code, rpf->entity.index); format.format.code = MEDIA_BUS_FMT_ARGB8888_1X32; ret = v4l2_subdev_call(&rpf->entity.subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; /* Insert and configure the UIF if available. */ ret = vsp1_du_insert_uif(vsp1, pipe, uif, &rpf->entity, RWPF_PAD_SOURCE, pipe->brx, brx_input); if (ret < 0) return ret; /* BRx sink, propagate the format from the RPF source. */ format.pad = brx_input; ret = v4l2_subdev_call(&pipe->brx->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on %s pad %u\n", __func__, format.format.width, format.format.height, format.format.code, BRX_NAME(pipe->brx), format.pad); sel.pad = brx_input; sel.target = V4L2_SEL_TGT_COMPOSE; sel.r = vsp1->drm->inputs[rpf->entity.index].compose; ret = v4l2_subdev_call(&pipe->brx->subdev, pad, set_selection, NULL, &sel); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set selection (%u,%u)/%ux%u on %s pad %u\n", __func__, sel.r.left, sel.r.top, sel.r.width, sel.r.height, BRX_NAME(pipe->brx), sel.pad); return 0; } /* Setup the BRx source pad. */ static int vsp1_du_pipeline_setup_inputs(struct vsp1_device *vsp1, struct vsp1_pipeline *pipe); static void vsp1_du_pipeline_configure(struct vsp1_pipeline *pipe); static int vsp1_du_pipeline_setup_brx(struct vsp1_device *vsp1, struct vsp1_pipeline *pipe) { struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe); struct v4l2_subdev_format format = { .which = V4L2_SUBDEV_FORMAT_ACTIVE, }; struct vsp1_entity *brx; int ret; /* * Pick a BRx: * - If we need more than two inputs, use the BRU. * - Otherwise, if we are not forced to release our BRx, keep it. * - Else, use any free BRx (randomly starting with the BRU). */ if (pipe->num_inputs > 2) brx = &vsp1->bru->entity; else if (pipe->brx && !drm_pipe->force_brx_release) brx = pipe->brx; else if (!vsp1->bru->entity.pipe) brx = &vsp1->bru->entity; else brx = &vsp1->brs->entity; /* Switch BRx if needed. */ if (brx != pipe->brx) { struct vsp1_entity *released_brx = NULL; /* Release our BRx if we have one. */ if (pipe->brx) { dev_dbg(vsp1->dev, "%s: pipe %u: releasing %s\n", __func__, pipe->lif->index, BRX_NAME(pipe->brx)); /* * The BRx might be acquired by the other pipeline in * the next step. We must thus remove it from the list * of entities for this pipeline. The other pipeline's * hardware configuration will reconfigure the BRx * routing. * * However, if the other pipeline doesn't acquire our * BRx, we need to keep it in the list, otherwise the * hardware configuration step won't disconnect it from * the pipeline. To solve this, store the released BRx * pointer to add it back to the list of entities later * if it isn't acquired by the other pipeline. */ released_brx = pipe->brx; list_del(&pipe->brx->list_pipe); pipe->brx->sink = NULL; pipe->brx->pipe = NULL; pipe->brx = NULL; } /* * If the BRx we need is in use, force the owner pipeline to * switch to the other BRx and wait until the switch completes. */ if (brx->pipe) { struct vsp1_drm_pipeline *owner_pipe; dev_dbg(vsp1->dev, "%s: pipe %u: waiting for %s\n", __func__, pipe->lif->index, BRX_NAME(brx)); owner_pipe = to_vsp1_drm_pipeline(brx->pipe); owner_pipe->force_brx_release = true; vsp1_du_pipeline_setup_inputs(vsp1, &owner_pipe->pipe); vsp1_du_pipeline_configure(&owner_pipe->pipe); ret = wait_event_timeout(owner_pipe->wait_queue, !owner_pipe->force_brx_release, msecs_to_jiffies(500)); if (ret == 0) dev_warn(vsp1->dev, "DRM pipeline %u reconfiguration timeout\n", owner_pipe->pipe.lif->index); } /* * If the BRx we have released previously hasn't been acquired * by the other pipeline, add it back to the entities list (with * the pipe pointer NULL) to let vsp1_du_pipeline_configure() * disconnect it from the hardware pipeline. */ if (released_brx && !released_brx->pipe) list_add_tail(&released_brx->list_pipe, &pipe->entities); /* Add the BRx to the pipeline. */ dev_dbg(vsp1->dev, "%s: pipe %u: acquired %s\n", __func__, pipe->lif->index, BRX_NAME(brx)); pipe->brx = brx; pipe->brx->pipe = pipe; pipe->brx->sink = &pipe->output->entity; pipe->brx->sink_pad = 0; list_add_tail(&pipe->brx->list_pipe, &pipe->entities); } /* * Configure the format on the BRx source and verify that it matches the * requested format. We don't set the media bus code as it is configured * on the BRx sink pad 0 and propagated inside the entity, not on the * source pad. */ format.pad = brx->source_pad; format.format.width = drm_pipe->width; format.format.height = drm_pipe->height; format.format.field = V4L2_FIELD_NONE; ret = v4l2_subdev_call(&brx->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on %s pad %u\n", __func__, format.format.width, format.format.height, format.format.code, BRX_NAME(brx), brx->source_pad); if (format.format.width != drm_pipe->width || format.format.height != drm_pipe->height) { dev_dbg(vsp1->dev, "%s: format mismatch\n", __func__); return -EPIPE; } return 0; } static unsigned int rpf_zpos(struct vsp1_device *vsp1, struct vsp1_rwpf *rpf) { return vsp1->drm->inputs[rpf->entity.index].zpos; } /* Setup the input side of the pipeline (RPFs and BRx). */ static int vsp1_du_pipeline_setup_inputs(struct vsp1_device *vsp1, struct vsp1_pipeline *pipe) { struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe); struct vsp1_rwpf *inputs[VSP1_MAX_RPF] = { NULL, }; struct vsp1_entity *uif; bool use_uif = false; struct vsp1_brx *brx; unsigned int i; int ret; /* Count the number of enabled inputs and sort them by Z-order. */ pipe->num_inputs = 0; for (i = 0; i < vsp1->info->rpf_count; ++i) { struct vsp1_rwpf *rpf = vsp1->rpf[i]; unsigned int j; if (!pipe->inputs[i]) continue; /* Insert the RPF in the sorted RPFs array. */ for (j = pipe->num_inputs++; j > 0; --j) { if (rpf_zpos(vsp1, inputs[j-1]) <= rpf_zpos(vsp1, rpf)) break; inputs[j] = inputs[j-1]; } inputs[j] = rpf; } /* * Setup the BRx. This must be done before setting up the RPF input * pipelines as the BRx sink compose rectangles depend on the BRx source * format. */ ret = vsp1_du_pipeline_setup_brx(vsp1, pipe); if (ret < 0) { dev_err(vsp1->dev, "%s: failed to setup %s source\n", __func__, BRX_NAME(pipe->brx)); return ret; } brx = to_brx(&pipe->brx->subdev); /* Setup the RPF input pipeline for every enabled input. */ for (i = 0; i < pipe->brx->source_pad; ++i) { struct vsp1_rwpf *rpf = inputs[i]; if (!rpf) { brx->inputs[i].rpf = NULL; continue; } if (!rpf->entity.pipe) { rpf->entity.pipe = pipe; list_add_tail(&rpf->entity.list_pipe, &pipe->entities); } brx->inputs[i].rpf = rpf; rpf->brx_input = i; rpf->entity.sink = pipe->brx; rpf->entity.sink_pad = i; dev_dbg(vsp1->dev, "%s: connecting RPF.%u to %s:%u\n", __func__, rpf->entity.index, BRX_NAME(pipe->brx), i); uif = drm_pipe->crc.source == VSP1_DU_CRC_PLANE && drm_pipe->crc.index == i ? drm_pipe->uif : NULL; if (uif) use_uif = true; ret = vsp1_du_pipeline_setup_rpf(vsp1, pipe, rpf, uif, i); if (ret < 0) { dev_err(vsp1->dev, "%s: failed to setup RPF.%u\n", __func__, rpf->entity.index); return ret; } } /* Insert and configure the UIF at the BRx output if available. */ uif = drm_pipe->crc.source == VSP1_DU_CRC_OUTPUT ? drm_pipe->uif : NULL; if (uif) use_uif = true; ret = vsp1_du_insert_uif(vsp1, pipe, uif, pipe->brx, pipe->brx->source_pad, &pipe->output->entity, 0); if (ret < 0) dev_err(vsp1->dev, "%s: failed to setup UIF after %s\n", __func__, BRX_NAME(pipe->brx)); /* * If the UIF is not in use schedule it for removal by setting its pipe * pointer to NULL, vsp1_du_pipeline_configure() will remove it from the * hardware pipeline and from the pipeline's list of entities. Otherwise * make sure it is present in the pipeline's list of entities if it * wasn't already. */ if (!use_uif) { drm_pipe->uif->pipe = NULL; } else if (!drm_pipe->uif->pipe) { drm_pipe->uif->pipe = pipe; list_add_tail(&drm_pipe->uif->list_pipe, &pipe->entities); } return 0; } /* Setup the output side of the pipeline (WPF and LIF). */ static int vsp1_du_pipeline_setup_output(struct vsp1_device *vsp1, struct vsp1_pipeline *pipe) { struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe); struct v4l2_subdev_format format = { 0, }; int ret; format.which = V4L2_SUBDEV_FORMAT_ACTIVE; format.pad = RWPF_PAD_SINK; format.format.width = drm_pipe->width; format.format.height = drm_pipe->height; format.format.code = MEDIA_BUS_FMT_ARGB8888_1X32; format.format.field = V4L2_FIELD_NONE; ret = v4l2_subdev_call(&pipe->output->entity.subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on WPF%u sink\n", __func__, format.format.width, format.format.height, format.format.code, pipe->output->entity.index); format.pad = RWPF_PAD_SOURCE; ret = v4l2_subdev_call(&pipe->output->entity.subdev, pad, get_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: got format %ux%u (%x) on WPF%u source\n", __func__, format.format.width, format.format.height, format.format.code, pipe->output->entity.index); format.pad = LIF_PAD_SINK; ret = v4l2_subdev_call(&pipe->lif->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on LIF%u sink\n", __func__, format.format.width, format.format.height, format.format.code, pipe->lif->index); /* * Verify that the format at the output of the pipeline matches the * requested frame size and media bus code. */ if (format.format.width != drm_pipe->width || format.format.height != drm_pipe->height || format.format.code != MEDIA_BUS_FMT_ARGB8888_1X32) { dev_dbg(vsp1->dev, "%s: format mismatch on LIF%u\n", __func__, pipe->lif->index); return -EPIPE; } return 0; } /* Configure all entities in the pipeline. */ static void vsp1_du_pipeline_configure(struct vsp1_pipeline *pipe) { struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe); struct vsp1_entity *entity; struct vsp1_entity *next; struct vsp1_dl_list *dl; struct vsp1_dl_body *dlb; unsigned int dl_flags = 0; if (drm_pipe->force_brx_release) dl_flags |= VSP1_DL_FRAME_END_INTERNAL; if (pipe->output->writeback) dl_flags |= VSP1_DL_FRAME_END_WRITEBACK; dl = vsp1_dl_list_get(pipe->output->dlm); dlb = vsp1_dl_list_get_body0(dl); list_for_each_entry_safe(entity, next, &pipe->entities, list_pipe) { /* Disconnect unused entities from the pipeline. */ if (!entity->pipe) { vsp1_dl_body_write(dlb, entity->route->reg, VI6_DPR_NODE_UNUSED); entity->sink = NULL; list_del(&entity->list_pipe); continue; } vsp1_entity_route_setup(entity, pipe, dlb); vsp1_entity_configure_stream(entity, pipe, dl, dlb); vsp1_entity_configure_frame(entity, pipe, dl, dlb); vsp1_entity_configure_partition(entity, pipe, dl, dlb); } vsp1_dl_list_commit(dl, dl_flags); } static int vsp1_du_pipeline_set_rwpf_format(struct vsp1_device *vsp1, struct vsp1_rwpf *rwpf, u32 pixelformat, unsigned int pitch) { const struct vsp1_format_info *fmtinfo; unsigned int chroma_hsub; fmtinfo = vsp1_get_format_info(vsp1, pixelformat); if (!fmtinfo) { dev_dbg(vsp1->dev, "Unsupported pixel format %08x\n", pixelformat); return -EINVAL; } /* * Only formats with three planes can affect the chroma planes pitch. * All formats with two planes have a horizontal subsampling value of 2, * but combine U and V in a single chroma plane, which thus results in * the luma plane and chroma plane having the same pitch. */ chroma_hsub = (fmtinfo->planes == 3) ? fmtinfo->hsub : 1; rwpf->fmtinfo = fmtinfo; rwpf->format.num_planes = fmtinfo->planes; rwpf->format.plane_fmt[0].bytesperline = pitch; rwpf->format.plane_fmt[1].bytesperline = pitch / chroma_hsub; return 0; } /* ----------------------------------------------------------------------------- * DU Driver API */ int vsp1_du_init(struct device *dev) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); if (!vsp1) return -EPROBE_DEFER; return 0; } EXPORT_SYMBOL_GPL(vsp1_du_init); /** * vsp1_du_setup_lif - Setup the output part of the VSP pipeline * @dev: the VSP device * @pipe_index: the DRM pipeline index * @cfg: the LIF configuration * * Configure the output part of VSP DRM pipeline for the given frame @cfg.width * and @cfg.height. This sets up formats on the BRx source pad, the WPF sink and * source pads, and the LIF sink pad. * * The @pipe_index argument selects which DRM pipeline to setup. The number of * available pipelines depend on the VSP instance. * * As the media bus code on the blend unit source pad is conditioned by the * configuration of its sink 0 pad, we also set up the formats on all blend unit * sinks, even if the configuration will be overwritten later by * vsp1_du_setup_rpf(). This ensures that the blend unit configuration is set to * a well defined state. * * Return 0 on success or a negative error code on failure. */ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, const struct vsp1_du_lif_config *cfg) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); struct vsp1_drm_pipeline *drm_pipe; struct vsp1_pipeline *pipe; unsigned long flags; unsigned int i; int ret; if (pipe_index >= vsp1->info->lif_count) return -EINVAL; drm_pipe = &vsp1->drm->pipe[pipe_index]; pipe = &drm_pipe->pipe; if (!cfg) { struct vsp1_brx *brx; mutex_lock(&vsp1->drm->lock); brx = to_brx(&pipe->brx->subdev); /* * NULL configuration means the CRTC is being disabled, stop * the pipeline and turn the light off. */ ret = vsp1_pipeline_stop(pipe); if (ret == -ETIMEDOUT) dev_err(vsp1->dev, "DRM pipeline stop timeout\n"); for (i = 0; i < ARRAY_SIZE(pipe->inputs); ++i) { struct vsp1_rwpf *rpf = pipe->inputs[i]; if (!rpf) continue; /* * Remove the RPF from the pipe and the list of BRx * inputs. */ WARN_ON(!rpf->entity.pipe); rpf->entity.pipe = NULL; list_del(&rpf->entity.list_pipe); pipe->inputs[i] = NULL; brx->inputs[rpf->brx_input].rpf = NULL; } drm_pipe->du_complete = NULL; pipe->num_inputs = 0; dev_dbg(vsp1->dev, "%s: pipe %u: releasing %s\n", __func__, pipe->lif->index, BRX_NAME(pipe->brx)); list_del(&pipe->brx->list_pipe); pipe->brx->pipe = NULL; pipe->brx = NULL; mutex_unlock(&vsp1->drm->lock); vsp1_dlm_reset(pipe->output->dlm); vsp1_device_put(vsp1); dev_dbg(vsp1->dev, "%s: pipeline disabled\n", __func__); return 0; } drm_pipe->width = cfg->width; drm_pipe->height = cfg->height; pipe->interlaced = cfg->interlaced; dev_dbg(vsp1->dev, "%s: configuring LIF%u with format %ux%u%s\n", __func__, pipe_index, cfg->width, cfg->height, pipe->interlaced ? "i" : ""); mutex_lock(&vsp1->drm->lock); /* Setup formats through the pipeline. */ ret = vsp1_du_pipeline_setup_inputs(vsp1, pipe); if (ret < 0) goto unlock; ret = vsp1_du_pipeline_setup_output(vsp1, pipe); if (ret < 0) goto unlock; /* Enable the VSP1. */ ret = vsp1_device_get(vsp1); if (ret < 0) goto unlock; /* * Register a callback to allow us to notify the DRM driver of frame * completion events. */ drm_pipe->du_complete = cfg->callback; drm_pipe->du_private = cfg->callback_data; /* Disable the display interrupts. */ vsp1_write(vsp1, VI6_DISP_IRQ_STA(pipe_index), 0); vsp1_write(vsp1, VI6_DISP_IRQ_ENB(pipe_index), 0); /* Configure all entities in the pipeline. */ vsp1_du_pipeline_configure(pipe); unlock: mutex_unlock(&vsp1->drm->lock); if (ret < 0) return ret; /* Start the pipeline. */ spin_lock_irqsave(&pipe->irqlock, flags); vsp1_pipeline_run(pipe); spin_unlock_irqrestore(&pipe->irqlock, flags); dev_dbg(vsp1->dev, "%s: pipeline enabled\n", __func__); return 0; } EXPORT_SYMBOL_GPL(vsp1_du_setup_lif); /** * vsp1_du_atomic_begin - Prepare for an atomic update * @dev: the VSP device * @pipe_index: the DRM pipeline index */ void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index) { } EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin); /** * vsp1_du_atomic_update - Setup one RPF input of the VSP pipeline * @dev: the VSP device * @pipe_index: the DRM pipeline index * @rpf_index: index of the RPF to setup (0-based) * @cfg: the RPF configuration * * Configure the VSP to perform image composition through RPF @rpf_index as * described by the @cfg configuration. The image to compose is referenced by * @cfg.mem and composed using the @cfg.src crop rectangle and the @cfg.dst * composition rectangle. The Z-order is configurable with higher @zpos values * displayed on top. * * If the @cfg configuration is NULL, the RPF will be disabled. Calling the * function on a disabled RPF is allowed. * * Image format as stored in memory is expressed as a V4L2 @cfg.pixelformat * value. The memory pitch is configurable to allow for padding at end of lines, * or simply for images that extend beyond the crop rectangle boundaries. The * @cfg.pitch value is expressed in bytes and applies to all planes for * multiplanar formats. * * The source memory buffer is referenced by the DMA address of its planes in * the @cfg.mem array. Up to two planes are supported. The second plane DMA * address is ignored for formats using a single plane. * * This function isn't reentrant, the caller needs to serialize calls. * * Return 0 on success or a negative error code on failure. */ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index, unsigned int rpf_index, const struct vsp1_du_atomic_config *cfg) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[pipe_index]; struct vsp1_rwpf *rpf; int ret; if (rpf_index >= vsp1->info->rpf_count) return -EINVAL; rpf = vsp1->rpf[rpf_index]; if (!cfg) { dev_dbg(vsp1->dev, "%s: RPF%u: disable requested\n", __func__, rpf_index); /* * Remove the RPF from the pipeline's inputs. Keep it in the * pipeline's entity list to let vsp1_du_pipeline_configure() * remove it from the hardware pipeline. */ rpf->entity.pipe = NULL; drm_pipe->pipe.inputs[rpf_index] = NULL; return 0; } dev_dbg(vsp1->dev, "%s: RPF%u: (%u,%u)/%ux%u -> (%u,%u)/%ux%u (%08x), pitch %u dma { %pad, %pad, %pad } zpos %u\n", __func__, rpf_index, cfg->src.left, cfg->src.top, cfg->src.width, cfg->src.height, cfg->dst.left, cfg->dst.top, cfg->dst.width, cfg->dst.height, cfg->pixelformat, cfg->pitch, &cfg->mem[0], &cfg->mem[1], &cfg->mem[2], cfg->zpos); /* * Store the format, stride, memory buffer address, crop and compose * rectangles and Z-order position and for the input. */ ret = vsp1_du_pipeline_set_rwpf_format(vsp1, rpf, cfg->pixelformat, cfg->pitch); if (ret < 0) return ret; rpf->alpha = cfg->alpha; rpf->mem.addr[0] = cfg->mem[0]; rpf->mem.addr[1] = cfg->mem[1]; rpf->mem.addr[2] = cfg->mem[2]; vsp1->drm->inputs[rpf_index].crop = cfg->src; vsp1->drm->inputs[rpf_index].compose = cfg->dst; vsp1->drm->inputs[rpf_index].zpos = cfg->zpos; drm_pipe->pipe.inputs[rpf_index] = rpf; return 0; } EXPORT_SYMBOL_GPL(vsp1_du_atomic_update); /** * vsp1_du_atomic_flush - Commit an atomic update * @dev: the VSP device * @pipe_index: the DRM pipeline index * @cfg: atomic pipe configuration */ void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index, const struct vsp1_du_atomic_pipe_config *cfg) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[pipe_index]; struct vsp1_pipeline *pipe = &drm_pipe->pipe; int ret; drm_pipe->crc = cfg->crc; mutex_lock(&vsp1->drm->lock); if (cfg->writeback.pixelformat) { const struct vsp1_du_writeback_config *wb_cfg = &cfg->writeback; ret = vsp1_du_pipeline_set_rwpf_format(vsp1, pipe->output, wb_cfg->pixelformat, wb_cfg->pitch); if (WARN_ON(ret < 0)) goto done; pipe->output->mem.addr[0] = wb_cfg->mem[0]; pipe->output->mem.addr[1] = wb_cfg->mem[1]; pipe->output->mem.addr[2] = wb_cfg->mem[2]; pipe->output->writeback = true; } vsp1_du_pipeline_setup_inputs(vsp1, pipe); vsp1_du_pipeline_configure(pipe); done: mutex_unlock(&vsp1->drm->lock); } EXPORT_SYMBOL_GPL(vsp1_du_atomic_flush); int vsp1_du_map_sg(struct device *dev, struct sg_table *sgt) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); /* * As all the buffers allocated by the DU driver are coherent, we can * skip cache sync. This will need to be revisited when support for * non-coherent buffers will be added to the DU driver. */ return dma_map_sg_attrs(vsp1->bus_master, sgt->sgl, sgt->nents, DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); } EXPORT_SYMBOL_GPL(vsp1_du_map_sg); void vsp1_du_unmap_sg(struct device *dev, struct sg_table *sgt) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); dma_unmap_sg_attrs(vsp1->bus_master, sgt->sgl, sgt->nents, DMA_TO_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); } EXPORT_SYMBOL_GPL(vsp1_du_unmap_sg); /* ----------------------------------------------------------------------------- * Initialization */ int vsp1_drm_init(struct vsp1_device *vsp1) { unsigned int i; vsp1->drm = devm_kzalloc(vsp1->dev, sizeof(*vsp1->drm), GFP_KERNEL); if (!vsp1->drm) return -ENOMEM; mutex_init(&vsp1->drm->lock); /* Create one DRM pipeline per LIF. */ for (i = 0; i < vsp1->info->lif_count; ++i) { struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[i]; struct vsp1_pipeline *pipe = &drm_pipe->pipe; init_waitqueue_head(&drm_pipe->wait_queue); vsp1_pipeline_init(pipe); pipe->frame_end = vsp1_du_pipeline_frame_end; /* * The output side of the DRM pipeline is static, add the * corresponding entities manually. */ pipe->output = vsp1->wpf[i]; pipe->lif = &vsp1->lif[i]->entity; pipe->output->entity.pipe = pipe; pipe->output->entity.sink = pipe->lif; pipe->output->entity.sink_pad = 0; list_add_tail(&pipe->output->entity.list_pipe, &pipe->entities); pipe->lif->pipe = pipe; list_add_tail(&pipe->lif->list_pipe, &pipe->entities); /* * CRC computation is initially disabled, don't add the UIF to * the pipeline. */ if (i < vsp1->info->uif_count) drm_pipe->uif = &vsp1->uif[i]->entity; } /* Disable all RPFs initially. */ for (i = 0; i < vsp1->info->rpf_count; ++i) { struct vsp1_rwpf *input = vsp1->rpf[i]; INIT_LIST_HEAD(&input->entity.list_pipe); } return 0; } void vsp1_drm_cleanup(struct vsp1_device *vsp1) { mutex_destroy(&vsp1->drm->lock); }