From: Laurent Pinchart Date: Fri, 23 Jun 2017 13:20:47 +0000 (+0300) Subject: v4l: vsp1: Add support for multiple DRM pipelines X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1837379e95565bc5956ba2c8abc2ec43471dab46;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git v4l: vsp1: Add support for multiple DRM pipelines The R-Car H3 ES2.0 VSP-DL instance has two LIF entities and can drive two display pipelines at the same time. Refactor the VSP DRM code to support that by introducing a vsp_drm_pipeline object that models one display pipeline. Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham Acked-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/vsp1/vsp1_drm.c b/drivers/media/platform/vsp1/vsp1_drm.c index 4e1b893e8f51..7791d7b5a743 100644 --- a/drivers/media/platform/vsp1/vsp1_drm.c +++ b/drivers/media/platform/vsp1/vsp1_drm.c @@ -34,10 +34,10 @@ static void vsp1_du_pipeline_frame_end(struct vsp1_pipeline *pipe) { - struct vsp1_drm *drm = to_vsp1_drm(pipe); + struct vsp1_drm_pipeline *drm_pipe = to_vsp1_drm_pipeline(pipe); - if (drm->du_complete) - drm->du_complete(drm->du_private); + if (drm_pipe->du_complete) + drm_pipe->du_complete(drm_pipe->du_private); } /* ----------------------------------------------------------------------------- @@ -80,15 +80,22 @@ 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_pipeline *pipe = &vsp1->drm->pipe; - struct vsp1_bru *bru = vsp1->bru; + struct vsp1_drm_pipeline *drm_pipe; + struct vsp1_pipeline *pipe; + struct vsp1_bru *bru; struct v4l2_subdev_format format; + const char *bru_name; unsigned int i; int ret; - if (pipe_index > 0) + if (pipe_index >= vsp1->info->lif_count) return -EINVAL; + drm_pipe = &vsp1->drm->pipe[pipe_index]; + pipe = &drm_pipe->pipe; + bru = to_bru(&pipe->bru->subdev); + bru_name = pipe->bru->type == VSP1_ENTITY_BRU ? "BRU" : "BRS"; + if (!cfg) { /* * NULL configuration means the CRTC is being disabled, stop @@ -100,14 +107,25 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, media_pipeline_stop(&pipe->output->entity.subdev.entity); - for (i = 0; i < bru->entity.source_pad; ++i) { - vsp1->drm->inputs[i].enabled = false; - bru->inputs[i].rpf = NULL; + 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 BRU + * inputs. + */ + WARN_ON(list_empty(&rpf->entity.list_pipe)); + list_del_init(&rpf->entity.list_pipe); pipe->inputs[i] = NULL; + + bru->inputs[rpf->bru_input].rpf = NULL; } + drm_pipe->du_complete = NULL; pipe->num_inputs = 0; - vsp1->drm->du_complete = NULL; vsp1_dlm_reset(pipe->output->dlm); vsp1_device_put(vsp1); @@ -117,8 +135,8 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, return 0; } - dev_dbg(vsp1->dev, "%s: configuring LIF with format %ux%u\n", - __func__, cfg->width, cfg->height); + dev_dbg(vsp1->dev, "%s: configuring LIF%u with format %ux%u\n", + __func__, pipe_index, cfg->width, cfg->height); /* * Configure the format at the BRU sinks and propagate it through the @@ -127,7 +145,7 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, memset(&format, 0, sizeof(format)); format.which = V4L2_SUBDEV_FORMAT_ACTIVE; - for (i = 0; i < bru->entity.source_pad; ++i) { + for (i = 0; i < pipe->bru->source_pad; ++i) { format.pad = i; format.format.width = cfg->width; @@ -135,60 +153,60 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, format.format.code = MEDIA_BUS_FMT_ARGB8888_1X32; format.format.field = V4L2_FIELD_NONE; - ret = v4l2_subdev_call(&bru->entity.subdev, pad, + ret = v4l2_subdev_call(&pipe->bru->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; - dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on BRU pad %u\n", + 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, i); + format.format.code, bru_name, i); } - format.pad = bru->entity.source_pad; + format.pad = pipe->bru->source_pad; format.format.width = cfg->width; format.format.height = cfg->height; format.format.code = MEDIA_BUS_FMT_ARGB8888_1X32; format.format.field = V4L2_FIELD_NONE; - ret = v4l2_subdev_call(&bru->entity.subdev, pad, set_fmt, NULL, + ret = v4l2_subdev_call(&pipe->bru->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; - dev_dbg(vsp1->dev, "%s: set format %ux%u (%x) on BRU pad %u\n", + 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, i); + format.format.code, bru_name, i); format.pad = RWPF_PAD_SINK; - ret = v4l2_subdev_call(&vsp1->wpf[0]->entity.subdev, pad, set_fmt, NULL, + 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 WPF0 sink\n", + 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); + format.format.code, pipe->output->entity.index); format.pad = RWPF_PAD_SOURCE; - ret = v4l2_subdev_call(&vsp1->wpf[0]->entity.subdev, pad, get_fmt, NULL, + 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 WPF0 source\n", + 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); + format.format.code, pipe->output->entity.index); format.pad = LIF_PAD_SINK; - ret = v4l2_subdev_call(&vsp1->lif[0]->entity.subdev, pad, set_fmt, NULL, + 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 sink\n", + 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); + format.format.code, pipe_index); /* * Verify that the format at the output of the pipeline matches the @@ -216,8 +234,8 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index, * Register a callback to allow us to notify the DRM driver of frame * completion events. */ - vsp1->drm->du_complete = cfg->callback; - vsp1->drm->du_private = cfg->callback_data; + drm_pipe->du_complete = cfg->callback; + drm_pipe->du_private = cfg->callback_data; ret = media_pipeline_start(&pipe->output->entity.subdev.entity, &pipe->pipe); @@ -245,9 +263,9 @@ EXPORT_SYMBOL_GPL(vsp1_du_setup_lif); void vsp1_du_atomic_begin(struct device *dev, unsigned int pipe_index) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); - struct vsp1_pipeline *pipe = &vsp1->drm->pipe; + struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[pipe_index]; - vsp1->drm->num_inputs = pipe->num_inputs; + drm_pipe->enabled = drm_pipe->pipe.num_inputs != 0; } EXPORT_SYMBOL_GPL(vsp1_du_atomic_begin); @@ -286,6 +304,7 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_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]; const struct vsp1_format_info *fmtinfo; struct vsp1_rwpf *rpf; @@ -298,7 +317,12 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index, dev_dbg(vsp1->dev, "%s: RPF%u: disable requested\n", __func__, rpf_index); - vsp1->drm->inputs[rpf_index].enabled = false; + /* + * Remove the RPF from the pipe's inputs. The atomic flush + * handler will disable the input and remove the entity from the + * pipe's entities list. + */ + drm_pipe->pipe.inputs[rpf_index] = NULL; return 0; } @@ -334,13 +358,15 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index, vsp1->drm->inputs[rpf_index].crop = cfg->src; vsp1->drm->inputs[rpf_index].compose = cfg->dst; vsp1->drm->inputs[rpf_index].zpos = cfg->zpos; - vsp1->drm->inputs[rpf_index].enabled = true; + + drm_pipe->pipe.inputs[rpf_index] = rpf; return 0; } EXPORT_SYMBOL_GPL(vsp1_du_atomic_update); static int vsp1_du_setup_rpf_pipe(struct vsp1_device *vsp1, + struct vsp1_pipeline *pipe, struct vsp1_rwpf *rpf, unsigned int bru_input) { struct v4l2_subdev_selection sel; @@ -414,7 +440,7 @@ static int vsp1_du_setup_rpf_pipe(struct vsp1_device *vsp1, /* BRU sink, propagate the format from the RPF source. */ format.pad = bru_input; - ret = v4l2_subdev_call(&vsp1->bru->entity.subdev, pad, set_fmt, NULL, + ret = v4l2_subdev_call(&pipe->bru->subdev, pad, set_fmt, NULL, &format); if (ret < 0) return ret; @@ -427,8 +453,8 @@ static int vsp1_du_setup_rpf_pipe(struct vsp1_device *vsp1, sel.target = V4L2_SEL_TGT_COMPOSE; sel.r = vsp1->drm->inputs[rpf->entity.index].compose; - ret = v4l2_subdev_call(&vsp1->bru->entity.subdev, pad, set_selection, - NULL, &sel); + ret = v4l2_subdev_call(&pipe->bru->subdev, pad, set_selection, NULL, + &sel); if (ret < 0) return ret; @@ -453,14 +479,20 @@ static unsigned int rpf_zpos(struct vsp1_device *vsp1, struct vsp1_rwpf *rpf) void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index) { struct vsp1_device *vsp1 = dev_get_drvdata(dev); - struct vsp1_pipeline *pipe = &vsp1->drm->pipe; + struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[pipe_index]; + struct vsp1_pipeline *pipe = &drm_pipe->pipe; struct vsp1_rwpf *inputs[VSP1_MAX_RPF] = { NULL, }; + struct vsp1_bru *bru = to_bru(&pipe->bru->subdev); struct vsp1_entity *entity; + struct vsp1_entity *next; struct vsp1_dl_list *dl; + const char *bru_name; unsigned long flags; unsigned int i; int ret; + bru_name = pipe->bru->type == VSP1_ENTITY_BRU ? "BRU" : "BRS"; + /* Prepare the display list. */ dl = vsp1_dl_list_get(pipe->output->dlm); @@ -471,12 +503,8 @@ void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index) struct vsp1_rwpf *rpf = vsp1->rpf[i]; unsigned int j; - if (!vsp1->drm->inputs[i].enabled) { - pipe->inputs[i] = NULL; + if (!pipe->inputs[i]) continue; - } - - pipe->inputs[i] = rpf; /* Insert the RPF in the sorted RPFs array. */ for (j = pipe->num_inputs++; j > 0; --j) { @@ -489,23 +517,26 @@ void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index) } /* Setup the RPF input pipeline for every enabled input. */ - for (i = 0; i < vsp1->info->num_bru_inputs; ++i) { + for (i = 0; i < pipe->bru->source_pad; ++i) { struct vsp1_rwpf *rpf = inputs[i]; if (!rpf) { - vsp1->bru->inputs[i].rpf = NULL; + bru->inputs[i].rpf = NULL; continue; } - vsp1->bru->inputs[i].rpf = rpf; + if (list_empty(&rpf->entity.list_pipe)) + list_add_tail(&rpf->entity.list_pipe, &pipe->entities); + + bru->inputs[i].rpf = rpf; rpf->bru_input = i; - rpf->entity.sink = &vsp1->bru->entity; + rpf->entity.sink = pipe->bru; rpf->entity.sink_pad = i; - dev_dbg(vsp1->dev, "%s: connecting RPF.%u to BRU:%u\n", - __func__, rpf->entity.index, i); + dev_dbg(vsp1->dev, "%s: connecting RPF.%u to %s:%u\n", + __func__, rpf->entity.index, bru_name, i); - ret = vsp1_du_setup_rpf_pipe(vsp1, rpf, i); + ret = vsp1_du_setup_rpf_pipe(vsp1, pipe, rpf, i); if (ret < 0) dev_err(vsp1->dev, "%s: failed to setup RPF.%u\n", @@ -513,16 +544,16 @@ void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index) } /* Configure all entities in the pipeline. */ - list_for_each_entry(entity, &pipe->entities, list_pipe) { + list_for_each_entry_safe(entity, next, &pipe->entities, list_pipe) { /* Disconnect unused RPFs from the pipeline. */ - if (entity->type == VSP1_ENTITY_RPF) { - struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev); + if (entity->type == VSP1_ENTITY_RPF && + !pipe->inputs[entity->index]) { + vsp1_dl_list_write(dl, entity->route->reg, + VI6_DPR_NODE_UNUSED); - if (!pipe->inputs[rpf->entity.index]) { - vsp1_dl_list_write(dl, entity->route->reg, - VI6_DPR_NODE_UNUSED); - continue; - } + list_del_init(&entity->list_pipe); + + continue; } vsp1_entity_route_setup(entity, pipe, dl); @@ -540,11 +571,11 @@ void vsp1_du_atomic_flush(struct device *dev, unsigned int pipe_index) vsp1_dl_list_commit(dl); /* Start or stop the pipeline if needed. */ - if (!vsp1->drm->num_inputs && pipe->num_inputs) { + if (!drm_pipe->enabled && pipe->num_inputs) { spin_lock_irqsave(&pipe->irqlock, flags); vsp1_pipeline_run(pipe); spin_unlock_irqrestore(&pipe->irqlock, flags); - } else if (vsp1->drm->num_inputs && !pipe->num_inputs) { + } else if (drm_pipe->enabled && !pipe->num_inputs) { vsp1_pipeline_stop(pipe); } } @@ -579,39 +610,46 @@ EXPORT_SYMBOL_GPL(vsp1_du_unmap_sg); int vsp1_drm_init(struct vsp1_device *vsp1) { - struct vsp1_pipeline *pipe; unsigned int i; vsp1->drm = devm_kzalloc(vsp1->dev, sizeof(*vsp1->drm), GFP_KERNEL); if (!vsp1->drm) return -ENOMEM; - pipe = &vsp1->drm->pipe; + /* 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; - vsp1_pipeline_init(pipe); + vsp1_pipeline_init(pipe); - /* The DRM pipeline is static, add entities manually. */ + /* + * The DRM pipeline is static, add entities manually. The first + * pipeline uses the BRU and the second pipeline the BRS. + */ + pipe->bru = i == 0 ? &vsp1->bru->entity : &vsp1->brs->entity; + pipe->lif = &vsp1->lif[i]->entity; + pipe->output = vsp1->wpf[i]; + pipe->output->pipe = pipe; + pipe->frame_end = vsp1_du_pipeline_frame_end; + + pipe->bru->sink = &pipe->output->entity; + pipe->bru->sink_pad = 0; + pipe->output->entity.sink = pipe->lif; + pipe->output->entity.sink_pad = 0; + + list_add_tail(&pipe->bru->list_pipe, &pipe->entities); + list_add_tail(&pipe->lif->list_pipe, &pipe->entities); + list_add_tail(&pipe->output->entity.list_pipe, &pipe->entities); + } + + /* Disable all RPFs initially. */ for (i = 0; i < vsp1->info->rpf_count; ++i) { struct vsp1_rwpf *input = vsp1->rpf[i]; - list_add_tail(&input->entity.list_pipe, &pipe->entities); + INIT_LIST_HEAD(&input->entity.list_pipe); } - vsp1->bru->entity.sink = &vsp1->wpf[0]->entity; - vsp1->bru->entity.sink_pad = 0; - vsp1->wpf[0]->entity.sink = &vsp1->lif[0]->entity; - vsp1->wpf[0]->entity.sink_pad = 0; - - list_add_tail(&vsp1->bru->entity.list_pipe, &pipe->entities); - list_add_tail(&vsp1->wpf[0]->entity.list_pipe, &pipe->entities); - list_add_tail(&vsp1->lif[0]->entity.list_pipe, &pipe->entities); - - pipe->bru = &vsp1->bru->entity; - pipe->lif = &vsp1->lif[0]->entity; - pipe->output = vsp1->wpf[0]; - pipe->output->pipe = pipe; - pipe->frame_end = vsp1_du_pipeline_frame_end; - return 0; } diff --git a/drivers/media/platform/vsp1/vsp1_drm.h b/drivers/media/platform/vsp1/vsp1_drm.h index 67d6549edfad..fca553ddd184 100644 --- a/drivers/media/platform/vsp1/vsp1_drm.h +++ b/drivers/media/platform/vsp1/vsp1_drm.h @@ -18,32 +18,41 @@ #include "vsp1_pipe.h" /** - * vsp1_drm - State for the API exposed to the DRM driver + * vsp1_drm_pipeline - State for the API exposed to the DRM driver * @pipe: the VSP1 pipeline used for display - * @num_inputs: number of active pipeline inputs at the beginning of an update - * @inputs: source crop rectangle, destination compose rectangle and z-order - * position for every input + * @enabled: pipeline state at the beginning of an update * @du_complete: frame completion callback for the DU driver (optional) * @du_private: data to be passed to the du_complete callback */ -struct vsp1_drm { +struct vsp1_drm_pipeline { struct vsp1_pipeline pipe; - unsigned int num_inputs; + bool enabled; + + /* Frame synchronisation */ + void (*du_complete)(void *); + void *du_private; +}; + +/** + * vsp1_drm - State for the API exposed to the DRM driver + * @pipe: the VSP1 DRM pipeline used for display + * @inputs: source crop rectangle, destination compose rectangle and z-order + * position for every input (indexed by RPF index) + */ +struct vsp1_drm { + struct vsp1_drm_pipeline pipe[VSP1_MAX_LIF]; + struct { - bool enabled; struct v4l2_rect crop; struct v4l2_rect compose; unsigned int zpos; } inputs[VSP1_MAX_RPF]; - - /* Frame synchronisation */ - void (*du_complete)(void *); - void *du_private; }; -static inline struct vsp1_drm *to_vsp1_drm(struct vsp1_pipeline *pipe) +static inline struct vsp1_drm_pipeline * +to_vsp1_drm_pipeline(struct vsp1_pipeline *pipe) { - return container_of(pipe, struct vsp1_drm, pipe); + return container_of(pipe, struct vsp1_drm_pipeline, pipe); } int vsp1_drm_init(struct vsp1_device *vsp1);