Hi Laurent,
Last one - (and I thought I'd already done this one in the last batch .. but
perhaps I lost it before hitting send)
On 26/06/17 19:12, Laurent Pinchart wrote:
> 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 <laurent.pinchart+rene...@ideasonboard.com>
I can't see anything wrong here, so maybe my eyes are going fuzzy from all the
blue text in my mail client :-)
Reviewed-by: Kieran Bingham <kieran.bingham+rene...@ideasonboard.com>
> ---
> drivers/media/platform/vsp1/vsp1_drm.c | 200
> ++++++++++++++++++++-------------
> drivers/media/platform/vsp1/vsp1_drm.h | 35 +++---
> 2 files changed, 141 insertions(+), 94 deletions(-)
>
> 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);
>
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