static int fimc_pipeline_validate(struct fimc_lite *fimc)
{
struct v4l2_subdev *sd = &fimc->subdev;
struct v4l2_subdev_format sink_fmt, src_fmt;
struct media_pad *pad;
int ret;
while (1) {
/* Retrieve format at the sink pad */
pad = &sd->entity.pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
/* Don't call FIMC subdev operation to avoid nested locking */
if (sd == &fimc->subdev) {
struct flite_frame *ff = &fimc->out_frame;
sink_fmt.format.width = ff->f_width;
sink_fmt.format.height = ff->f_height;
sink_fmt.format.code = fimc->fmt->mbus_code;
} else {
sink_fmt.pad = pad->index;
sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
&sink_fmt);
if (ret < 0 && ret != -ENOIOCTLCMD)
return -EPIPE;
}
/* Retrieve format at the source pad */
pad = media_entity_remote_source(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
src_fmt.pad = pad->index;
src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
if (ret < 0 && ret != -ENOIOCTLCMD)
return -EPIPE;
if (src_fmt.format.width != sink_fmt.format.width ||
src_fmt.format.height != sink_fmt.format.height ||
src_fmt.format.code != sink_fmt.format.code)
return -EPIPE;
}
return 0;
}
/*
* iss_pipeline_enable - Enable streaming on a pipeline
* @pipe: ISS pipeline
* @mode: Stream mode (single shot or continuous)
*
* Walk the entities chain starting at the pipeline output video node and start
* all modules in the chain in the given mode.
*
* Return 0 if successful, or the return value of the failed video::s_stream
* operation otherwise.
*/
static int iss_pipeline_enable(struct iss_pipeline *pipe,
enum iss_pipeline_stream_state mode)
{
struct iss_device *iss = pipe->output->iss;
struct media_entity *entity;
struct media_pad *pad;
struct v4l2_subdev *subdev;
unsigned long flags;
int ret;
/* If one of the entities in the pipeline has crashed it will not work
* properly. Refuse to start streaming in that case. This check must be
* performed before the loop below to avoid starting entities if the
* pipeline won't start anyway (those entities would then likely fail to
* stop, making the problem worse).
*/
if (pipe->entities & iss->crashed)
return -EIO;
spin_lock_irqsave(&pipe->lock, flags);
pipe->state &= ~(ISS_PIPELINE_IDLE_INPUT | ISS_PIPELINE_IDLE_OUTPUT);
spin_unlock_irqrestore(&pipe->lock, flags);
pipe->do_propagation = false;
entity = &pipe->output->video.entity;
while (1) {
pad = &entity->pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
entity = pad->entity;
subdev = media_entity_to_v4l2_subdev(entity);
ret = v4l2_subdev_call(subdev, video, s_stream, mode);
if (ret < 0 && ret != -ENOIOCTLCMD)
return ret;
}
iss_print_status(pipe->output->iss);
return 0;
}
/*
* csi2_link_setup - Setup CSI2 connections.
* @entity : Pointer to media entity structure
* @local : Pointer to local pad array
* @remote : Pointer to remote pad array
* @flags : Link flags
* return -EINVAL or zero on success
*/
static int csi2_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd);
struct isp_csi2_ctrl_cfg *ctrl = &csi2->ctrl;
/*
* The ISP core doesn't support pipelines with multiple video outputs.
* Revisit this when it will be implemented, and return -EBUSY for now.
*/
switch (local->index | media_entity_type(remote->entity)) {
case CSI2_PAD_SOURCE | MEDIA_ENT_T_DEVNODE:
if (flags & MEDIA_LNK_FL_ENABLED) {
if (csi2->output & ~CSI2_OUTPUT_MEMORY)
return -EBUSY;
csi2->output |= CSI2_OUTPUT_MEMORY;
} else {
csi2->output &= ~CSI2_OUTPUT_MEMORY;
}
break;
case CSI2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
if (flags & MEDIA_LNK_FL_ENABLED) {
if (csi2->output & ~CSI2_OUTPUT_CCDC)
return -EBUSY;
csi2->output |= CSI2_OUTPUT_CCDC;
} else {
csi2->output &= ~CSI2_OUTPUT_CCDC;
}
break;
default:
/* Link from camera to CSI2 is fixed... */
return -EINVAL;
}
ctrl->vp_only_enable =
(csi2->output & CSI2_OUTPUT_MEMORY) ? false : true;
ctrl->vp_clk_enable = !!(csi2->output & CSI2_OUTPUT_CCDC);
return 0;
}
/**
* fimc_pipeline_prepare - update pipeline information with subdevice pointers
* @fimc: fimc device terminating the pipeline
*
* Caller holds the graph mutex.
*/
void fimc_pipeline_prepare(struct fimc_dev *fimc, struct media_entity *me)
{
struct media_entity_graph graph;
struct v4l2_subdev *sd;
media_entity_graph_walk_start(&graph, me);
while ((me = media_entity_graph_walk_next(&graph))) {
if (media_entity_type(me) != MEDIA_ENT_T_V4L2_SUBDEV)
continue;
sd = media_entity_to_v4l2_subdev(me);
if (sd->grp_id == SENSOR_GROUP_ID)
fimc->pipeline.sensor = sd;
else if (sd->grp_id == CSIS_GROUP_ID)
fimc->pipeline.csis = sd;
}
}
/*
* ipipe_link_setup - Setup IPIPE connections
* @entity: IPIPE media entity
* @local: Pad at the local end of the link
* @remote: Pad at the remote end of the link
* @flags: Link flags
*
* return -EINVAL or zero on success
*/
static int ipipe_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd);
struct iss_device *iss = to_iss_device(ipipe);
if (!is_media_entity_v4l2_subdev(remote->entity))
return -EINVAL;
switch (local->index) {
case IPIPE_PAD_SINK:
/* Read from IPIPEIF. */
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
ipipe->input = IPIPE_INPUT_NONE;
break;
}
if (ipipe->input != IPIPE_INPUT_NONE)
return -EBUSY;
if (remote->entity == &iss->ipipeif.subdev.entity)
ipipe->input = IPIPE_INPUT_IPIPEIF;
break;
case IPIPE_PAD_SOURCE_VP:
/* Send to RESIZER */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (ipipe->output & ~IPIPE_OUTPUT_VP)
return -EBUSY;
ipipe->output |= IPIPE_OUTPUT_VP;
} else {
ipipe->output &= ~IPIPE_OUTPUT_VP;
}
break;
default:
return -EINVAL;
}
return 0;
}
static int video_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct camss_video *video = vb2_get_drv_priv(q);
struct video_device *vdev = &video->vdev;
struct media_entity *entity;
struct media_pad *pad;
struct v4l2_subdev *subdev;
int ret;
ret = media_pipeline_start(&vdev->entity, &video->pipe);
if (ret < 0)
return ret;
ret = video_check_format(video);
if (ret < 0)
goto error;
entity = &vdev->entity;
while (1) {
pad = &entity->pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
pad = media_entity_remote_pad(pad);
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
entity = pad->entity;
subdev = media_entity_to_v4l2_subdev(entity);
ret = v4l2_subdev_call(subdev, video, s_stream, 1);
if (ret < 0 && ret != -ENOIOCTLCMD)
goto error;
}
return 0;
error:
media_pipeline_stop(&vdev->entity);
video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
return ret;
}
static int
v4l2_subdev_link_validate_get_format(struct media_pad *pad,
struct v4l2_subdev_format *fmt)
{
if (media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV) {
struct v4l2_subdev *sd =
media_entity_to_v4l2_subdev(pad->entity);
fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
fmt->pad = pad->index;
return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
}
WARN(pad->entity->type != MEDIA_ENT_T_DEVNODE_V4L,
"Driver bug! Wrong media entity type 0x%08x, entity %s\n",
pad->entity->type, pad->entity->name);
return -EINVAL;
}
/**
* fimc_pipeline_prepare - update pipeline information with subdevice pointers
* @fimc: fimc device terminating the pipeline
*
* Caller holds the graph mutex.
*/
static void fimc_pipeline_prepare(struct fimc_pipeline *p,
struct media_entity *me)
{
struct media_pad *pad = &me->pads[0];
struct v4l2_subdev *sd;
int i;
for (i = 0; i < IDX_MAX; i++)
p->subdevs[i] = NULL;
while (1) {
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
/* source pad */
pad = media_entity_remote_source(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
switch (sd->grp_id) {
case SENSOR_GROUP_ID:
p->subdevs[IDX_SENSOR] = sd;
break;
case CSIS_GROUP_ID:
p->subdevs[IDX_CSIS] = sd;
break;
case FLITE_GROUP_ID:
p->subdevs[IDX_FLITE] = sd;
break;
case FIMC_GROUP_ID:
/* No need to control FIMC subdev through subdev ops */
break;
default:
pr_warn("%s: Unknown subdev grp_id: %#x\n",
__func__, sd->grp_id);
}
/* sink pad */
pad = &sd->entity.pads[0];
}
}
static struct v4l2_subdev *
_get_remote_subdev(struct nxp_video *me, u32 type, u32 *pad)
{
struct media_pad *remote;
if (type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
remote = media_entity_remote_source(&me->pads[1]); /* output, I'm source */
else
remote = media_entity_remote_source(&me->pads[0]); /* capture, I'm sink */
if (!remote ||
media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return NULL;
if (pad)
*pad = remote->index;
return media_entity_to_v4l2_subdev(remote->entity);
}
static int
v4l2_subdev_link_validate_get_format(struct media_pad *pad,
struct v4l2_subdev_format *fmt)
{
switch (media_entity_type(pad->entity)) {
case MEDIA_ENT_T_V4L2_SUBDEV:
fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
fmt->pad = pad->index;
return v4l2_subdev_call(media_entity_to_v4l2_subdev(
pad->entity),
pad, get_fmt, NULL, fmt);
default:
WARN(1, "Driver bug! Wrong media entity type %d, entity %s\n",
media_entity_type(pad->entity), pad->entity->name);
/* Fall through */
case MEDIA_ENT_T_DEVNODE_V4L:
return -EINVAL;
}
}
void gsc_cap_pipeline_prepare(struct gsc_dev *gsc, struct media_entity *me)
{
struct media_entity_graph graph;
struct v4l2_subdev *sd;
media_entity_graph_walk_start(&graph, me);
while ((me = media_entity_graph_walk_next(&graph))) {
gsc_dbg("me->name : %s", me->name);
if (media_entity_type(me) != MEDIA_ENT_T_V4L2_SUBDEV)
continue;
sd = media_entity_to_v4l2_subdev(me);
switch (sd->grp_id) {
case GSC_CAP_GRP_ID:
gsc->pipeline.sd_gsc = sd;
break;
case FLITE_GRP_ID:
gsc->pipeline.flite = sd;
break;
case SENSOR_GRP_ID:
gsc->pipeline.sensor = sd;
break;
case CSIS_GRP_ID:
gsc->pipeline.csis = sd;
break;
case FIMD_GRP_ID:
gsc->pipeline.disp = sd;
break;
default:
gsc_err("Unsupported group id");
break;
}
}
gsc_dbg("gsc->pipeline.sd_gsc : 0x%p", gsc->pipeline.sd_gsc);
gsc_dbg("gsc->pipeline.flite : 0x%p", gsc->pipeline.flite);
gsc_dbg("gsc->pipeline.sensor : 0x%p", gsc->pipeline.sensor);
gsc_dbg("gsc->pipeline.csis : 0x%p", gsc->pipeline.csis);
gsc_dbg("gsc->pipeline.disp : 0x%p", gsc->pipeline.disp);
}
/*
* iss_pipeline_disable - Disable streaming on a pipeline
* @pipe: ISS pipeline
* @until: entity at which to stop pipeline walk
*
* Walk the entities chain starting at the pipeline output video node and stop
* all modules in the chain. Wait synchronously for the modules to be stopped if
* necessary.
*
* If the until argument isn't NULL, stop the pipeline walk when reaching the
* until entity. This is used to disable a partially started pipeline due to a
* subdev start error.
*/
static int iss_pipeline_disable(struct iss_pipeline *pipe,
struct media_entity *until)
{
struct iss_device *iss = pipe->output->iss;
struct media_entity *entity;
struct media_pad *pad;
struct v4l2_subdev *subdev;
int failure = 0;
int ret;
entity = &pipe->output->video.entity;
while (1) {
pad = &entity->pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
pad = media_entity_remote_pad(pad);
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
entity = pad->entity;
if (entity == until)
break;
subdev = media_entity_to_v4l2_subdev(entity);
ret = v4l2_subdev_call(subdev, video, s_stream, 0);
if (ret < 0) {
dev_warn(iss->dev, "%s: module stop timeout.\n",
subdev->name);
/* If the entity failed to stopped, assume it has
* crashed. Mark it as such, the ISS will be reset when
* applications will release it.
*/
media_entity_enum_set(&iss->crashed, &subdev->entity);
failure = -ETIMEDOUT;
}
}
return failure;
}
static int flite_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct flite_dev *flite = to_flite_dev(sd);
flite_info("");
switch (local->index | media_entity_type(remote->entity)) {
case FLITE_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
if (flags & MEDIA_LNK_FL_ENABLED) {
if (flite->input != FLITE_INPUT_NONE) {
flite_err("link is busy");
return -EBUSY;
}
if (remote->index == CSIS_PAD_SOURCE)
flite->input |= FLITE_INPUT_CSIS;
else
flite->input |= FLITE_INPUT_SENSOR;
} else {
flite->input = FLITE_INPUT_NONE;
}
break;
case FLITE_PAD_SOURCE_PREVIEW | MEDIA_ENT_T_V4L2_SUBDEV: /* fall through */
case FLITE_PAD_SOURCE_CAMCORDING | MEDIA_ENT_T_V4L2_SUBDEV:
if (flags & MEDIA_LNK_FL_ENABLED)
flite->output = FLITE_OUTPUT_GSC;
else
flite->output = FLITE_OUTPUT_NONE;
break;
default:
flite_err("ERR link");
return -EINVAL;
}
return 0;
}
/*
* isp_pipeline_pm_power_one - Apply power change to an entity
* @entity: The entity
* @change: Use count change
*
* Change the entity use count by @change. If the entity is a subdev update its
* power state by calling the core::s_power operation when the use count goes
* from 0 to != 0 or from != 0 to 0.
*
* Return 0 on success or a negative error code on failure.
*/
static int isp_pipeline_pm_power_one(struct media_entity *entity, int change)
{
struct v4l2_subdev *subdev;
int ret;
subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV
? media_entity_to_v4l2_subdev(entity) : NULL;
if (entity->use_count == 0 && change > 0 && subdev != NULL) {
ret = v4l2_subdev_call(subdev, core, s_power, 1);
if (ret < 0 && ret != -ENOIOCTLCMD)
return ret;
}
entity->use_count += change;
WARN_ON(entity->use_count < 0);
if (entity->use_count == 0 && change < 0 && subdev != NULL)
v4l2_subdev_call(subdev, core, s_power, 0);
return 0;
}
/* Called with the media graph mutex held or entity->stream_count > 0. */
struct v4l2_subdev *fimc_find_remote_sensor(struct media_entity *entity)
{
struct media_pad *pad = &entity->pads[0];
struct v4l2_subdev *sd;
while (pad->flags & MEDIA_PAD_FL_SINK) {
/* source pad */
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
if (sd->grp_id == GRP_ID_FIMC_IS_SENSOR ||
sd->grp_id == GRP_ID_SENSOR)
return sd;
/* sink pad */
pad = &sd->entity.pads[0];
}
return NULL;
}
/*
* Check for source/sink format differences at each link.
* Return 0 if the formats match or -EPIPE otherwise.
*/
static int isp_video_pipeline_validate(struct fimc_isp *isp)
{
struct v4l2_subdev *sd = &isp->subdev;
struct v4l2_subdev_format sink_fmt, src_fmt;
struct media_pad *pad;
int ret;
while (1) {
/* Retrieve format at the sink pad */
pad = &sd->entity.pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
sink_fmt.pad = pad->index;
sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt);
if (ret < 0 && ret != -ENOIOCTLCMD)
return -EPIPE;
/* Retrieve format at the source pad */
pad = media_entity_remote_pad(pad);
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
break;
sd = media_entity_to_v4l2_subdev(pad->entity);
src_fmt.pad = pad->index;
src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
if (ret < 0 && ret != -ENOIOCTLCMD)
return -EPIPE;
if (src_fmt.format.width != sink_fmt.format.width ||
src_fmt.format.height != sink_fmt.format.height ||
src_fmt.format.code != sink_fmt.format.code)
return -EPIPE;
}
return 0;
}
int omap4iss_get_external_info(struct iss_pipeline *pipe,
struct media_link *link)
{
struct iss_device *iss =
container_of(pipe, struct iss_video, pipe)->iss;
struct v4l2_subdev_format fmt;
struct v4l2_ctrl *ctrl;
int ret;
if (!pipe->external)
return 0;
if (pipe->external_rate)
return 0;
memset(&fmt, 0, sizeof(fmt));
fmt.pad = link->source->index;
fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(link->sink->entity),
pad, get_fmt, NULL, &fmt);
if (ret < 0)
return -EPIPE;
pipe->external_bpp = omap4iss_video_format_info(fmt.format.code)->bpp;
ctrl = v4l2_ctrl_find(pipe->external->ctrl_handler,
V4L2_CID_PIXEL_RATE);
if (!ctrl) {
dev_warn(iss->dev, "no pixel rate control in subdev %s\n",
pipe->external->name);
return -EPIPE;
}
pipe->external_rate = v4l2_ctrl_g_ctrl_int64(ctrl);
return 0;
}
static int fimc_md_link_notify(struct media_pad *source,
struct media_pad *sink, u32 flags)
{
struct v4l2_subdev *sd;
struct fimc_dev *fimc;
int ret = 0;
if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
return 0;
sd = media_entity_to_v4l2_subdev(sink->entity);
fimc = v4l2_get_subdevdata(sd);
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
ret = __fimc_pipeline_shutdown(fimc);
fimc->pipeline.sensor = NULL;
fimc->pipeline.csis = NULL;
mutex_lock(&fimc->lock);
fimc_ctrls_delete(fimc->vid_cap.ctx);
mutex_unlock(&fimc->lock);
return ret;
}
/*
* Link activation. Enable power of pipeline elements only if the
* pipeline is already in use, i.e. its video node is opened.
* Recreate the controls destroyed during the link deactivation.
*/
mutex_lock(&fimc->lock);
if (fimc->vid_cap.refcnt > 0) {
ret = __fimc_pipeline_initialize(fimc, source->entity, true);
if (!ret)
ret = fimc_capture_ctrls_create(fimc);
}
mutex_unlock(&fimc->lock);
return ret ? -EPIPE : ret;
}
/*
* iss_pipeline_disable - Disable streaming on a pipeline
* @pipe: ISS pipeline
*
* Walk the entities chain starting at the pipeline output video node and stop
* all modules in the chain. Wait synchronously for the modules to be stopped if
* necessary.
*/
static int iss_pipeline_disable(struct iss_pipeline *pipe)
{
struct iss_device *iss = pipe->output->iss;
struct media_entity *entity;
struct media_pad *pad;
struct v4l2_subdev *subdev;
int failure = 0;
int ret;
entity = &pipe->output->video.entity;
while (1) {
pad = &entity->pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
pad = media_entity_remote_pad(pad);
if (pad == NULL ||
media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
entity = pad->entity;
subdev = media_entity_to_v4l2_subdev(entity);
ret = v4l2_subdev_call(subdev, video, s_stream, 0);
if (ret < 0) {
dev_dbg(iss->dev, "%s: module stop timeout.\n",
subdev->name);
/* If the entity failed to stopped, assume it has
* crashed. Mark it as such, the ISS will be reset when
* applications will release it.
*/
iss->crashed |= 1U << subdev->entity.id;
failure = -ETIMEDOUT;
}
}
return failure;
}
/*
* iss_pipeline_pm_power_one - Apply power change to an entity
* @entity: The entity
* @change: Use count change
*
* Change the entity use count by @change. If the entity is a subdev update its
* power state by calling the core::s_power operation when the use count goes
* from 0 to != 0 or from != 0 to 0.
*
* Return 0 on success or a negative error code on failure.
*/
static int iss_pipeline_pm_power_one(struct media_entity *entity, int change)
{
struct v4l2_subdev *subdev;
subdev = is_media_entity_v4l2_subdev(entity)
? media_entity_to_v4l2_subdev(entity) : NULL;
if (entity->use_count == 0 && change > 0 && subdev) {
int ret;
ret = v4l2_subdev_call(subdev, core, s_power, 1);
if (ret < 0 && ret != -ENOIOCTLCMD)
return ret;
}
entity->use_count += change;
WARN_ON(entity->use_count < 0);
if (entity->use_count == 0 && change < 0 && subdev)
v4l2_subdev_call(subdev, core, s_power, 0);
return 0;
}
/*
* Validate a pipeline by checking both ends of all links for format
* discrepancies.
*
* Compute the minimum time per frame value as the maximum of time per frame
* limits reported by every block in the pipeline.
*
* Return 0 if all formats match, or -EPIPE if at least one link is found with
* different formats on its two ends or if the pipeline doesn't start with a
* video source (either a subdev with no input pad, or a non-subdev entity).
*/
static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
{
struct isp_device *isp = pipe->output->isp;
struct media_pad *pad;
struct v4l2_subdev *subdev;
subdev = isp_video_remote_subdev(pipe->output, NULL);
if (subdev == NULL)
return -EPIPE;
while (1) {
/* Retrieve the sink format */
pad = &subdev->entity.pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
/* Update the maximum frame rate */
if (subdev == &isp->isp_res.subdev)
omap3isp_resizer_max_rate(&isp->isp_res,
&pipe->max_rate);
/* Retrieve the source format. Return an error if no source
* entity can be found, and stop checking the pipeline if the
* source entity isn't a subdev.
*/
pad = media_entity_remote_source(pad);
if (pad == NULL)
return -EPIPE;
if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
subdev = media_entity_to_v4l2_subdev(pad->entity);
}
return 0;
}
/* updates external subdev(sensor/decoder) which is active */
static int vpfe_update_current_ext_subdev(struct vpfe_video_device *video)
{
struct vpfe_device *vpfe_dev = video->vpfe_dev;
struct vpfe_config *vpfe_cfg;
struct v4l2_subdev *subdev;
struct media_pad *remote;
int i;
remote = media_entity_remote_pad(&vpfe_dev->vpfe_isif.pads[0]);
if (remote == NULL) {
pr_err("Invalid media connection to isif/ccdc\n");
return -EINVAL;
}
subdev = media_entity_to_v4l2_subdev(remote->entity);
vpfe_cfg = vpfe_dev->pdev->platform_data;
for (i = 0; i < vpfe_cfg->num_subdevs; i++) {
if (!strcmp(vpfe_cfg->sub_devs[i].module_name, subdev->name)) {
video->current_ext_subdev = &vpfe_cfg->sub_devs[i];
break;
}
}
/* if user not linked decoder/sensor to isif/ccdc */
if (i == vpfe_cfg->num_subdevs) {
pr_err("Invalid media chain connection to isif/ccdc\n");
return -EINVAL;
}
/* find the v4l2 subdev pointer */
for (i = 0; i < vpfe_dev->num_ext_subdevs; i++) {
if (!strcmp(video->current_ext_subdev->module_name,
vpfe_dev->sd[i]->name))
video->current_ext_subdev->subdev = vpfe_dev->sd[i];
}
return 0;
}
/*
* Validate a pipeline by checking both ends of all links for format
* discrepancies.
*
* Compute the minimum time per frame value as the maximum of time per frame
* limits reported by every block in the pipeline.
*
* Return 0 if all formats match, or -EPIPE if at least one link is found with
* different formats on its two ends or if the pipeline doesn't start with a
* video source (either a subdev with no input pad, or a non-subdev entity).
*/
static int isp_video_validate_pipeline(struct isp_pipeline *pipe)
{
struct isp_device *isp = pipe->output->isp;
struct v4l2_subdev_format fmt_source;
struct v4l2_subdev_format fmt_sink;
struct media_pad *pad;
struct v4l2_subdev *subdev;
int ret;
pipe->max_rate = pipe->l3_ick;
subdev = isp_video_remote_subdev(pipe->output, NULL);
if (subdev == NULL)
return -EPIPE;
while (1) {
unsigned int shifter_link;
/* Retrieve the sink format */
pad = &subdev->entity.pads[0];
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
fmt_sink.pad = pad->index;
fmt_sink.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_sink);
if (ret < 0 && ret != -ENOIOCTLCMD)
return -EPIPE;
/* Update the maximum frame rate */
if (subdev == &isp->isp_res.subdev)
omap3isp_resizer_max_rate(&isp->isp_res,
&pipe->max_rate);
/* Check ccdc maximum data rate when data comes from sensor
* TODO: Include ccdc rate in pipe->max_rate and compare the
* total pipe rate with the input data rate from sensor.
*/
if (subdev == &isp->isp_ccdc.subdev && pipe->input == NULL) {
unsigned int rate = UINT_MAX;
omap3isp_ccdc_max_rate(&isp->isp_ccdc, &rate);
if (isp->isp_ccdc.vpcfg.pixelclk > rate)
return -ENOSPC;
}
/* If sink pad is on CCDC, the link has the lane shifter
* in the middle of it. */
shifter_link = subdev == &isp->isp_ccdc.subdev;
/* Retrieve the source format. Return an error if no source
* entity can be found, and stop checking the pipeline if the
* source entity isn't a subdev.
*/
pad = media_entity_remote_source(pad);
if (pad == NULL)
return -EPIPE;
if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
break;
subdev = media_entity_to_v4l2_subdev(pad->entity);
fmt_source.pad = pad->index;
fmt_source.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt_source);
if (ret < 0 && ret != -ENOIOCTLCMD)
return -EPIPE;
/* Check if the two ends match */
if (fmt_source.format.width != fmt_sink.format.width ||
fmt_source.format.height != fmt_sink.format.height)
return -EPIPE;
if (shifter_link) {
unsigned int parallel_shift = 0;
if (isp->isp_ccdc.input == CCDC_INPUT_PARALLEL) {
struct isp_parallel_platform_data *pdata =
&((struct isp_v4l2_subdevs_group *)
subdev->host_priv)->bus.parallel;
parallel_shift = pdata->data_lane_shift * 2;
}
if (!isp_video_is_shiftable(fmt_source.format.code,
fmt_sink.format.code,
parallel_shift))
return -EPIPE;
} else if (fmt_source.format.code != fmt_sink.format.code)
return -EPIPE;
}
return 0;
}
static int mxr_streamer_get(struct mxr_device *mdev, struct v4l2_subdev *sd)
{
int i;
int ret = 0;
int local = 1;
struct sub_mxr_device *sub_mxr;
struct mxr_layer *layer;
struct media_pad *pad;
struct v4l2_mbus_framefmt mbus_fmt;
#if defined(CONFIG_CPU_EXYNOS4210)
struct mxr_resources *res = &mdev->res;
#endif
struct v4l2_control ctrl;
mutex_lock(&mdev->s_mutex);
++mdev->n_streamer;
mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer);
/* If pipeline is started from Gscaler input video device,
* TV basic configuration must be set before running mixer */
if (mdev->mxr_data_from == FROM_GSC_SD) {
mxr_dbg(mdev, "%s: from gscaler\n", __func__);
local = 0;
/* enable mixer clock */
ret = mxr_power_get(mdev);
if (ret) {
mxr_err(mdev, "power on failed\n");
ret = -ENODEV;
goto out;
}
/* turn on connected output device through link
* with mixer */
mxr_output_get(mdev);
for (i = 0; i < MXR_MAX_SUB_MIXERS; ++i) {
sub_mxr = &mdev->sub_mxr[i];
if (sub_mxr->local) {
layer = sub_mxr->layer[MXR_LAYER_VIDEO];
layer->pipe.state = MXR_PIPELINE_STREAMING;
mxr_layer_geo_fix(layer);
layer->ops.format_set(layer, layer->fmt,
&layer->geo);
layer->ops.stream_set(layer, 1);
local += sub_mxr->local;
}
}
if (local == 2)
mxr_layer_sync(mdev, MXR_ENABLE);
/* Set the TVOUT register about gsc-mixer local path */
mxr_reg_local_path_set(mdev, mdev->mxr0_gsc, mdev->mxr1_gsc,
mdev->flags);
}
/* Alpha blending configuration always can be changed
* whenever streaming */
mxr_set_alpha_blend(mdev);
mxr_reg_set_color_range(mdev);
mxr_reg_set_layer_prio(mdev);
if ((mdev->n_streamer == 1 && local == 1) ||
(mdev->n_streamer == 2 && local == 2)) {
for (i = MXR_PAD_SOURCE_GSCALER; i < MXR_PADS_NUM; ++i) {
pad = &sd->entity.pads[i];
/* find sink pad of output via enabled link*/
pad = media_entity_remote_source(pad);
if (pad)
if (media_entity_type(pad->entity)
== MEDIA_ENT_T_V4L2_SUBDEV)
break;
if (i == MXR_PAD_SOURCE_GRP1) {
ret = -ENODEV;
goto out;
}
}
sd = media_entity_to_v4l2_subdev(pad->entity);
mxr_dbg(mdev, "cookie of current output = (%d)\n",
to_output(mdev)->cookie);
#if defined(CONFIG_CPU_EXYNOS4210)
if (to_output(mdev)->cookie == 0)
clk_set_parent(res->sclk_mixer, res->sclk_dac);
else
clk_set_parent(res->sclk_mixer, res->sclk_hdmi);
#endif
mxr_reg_s_output(mdev, to_output(mdev)->cookie);
ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mbus_fmt);
if (ret) {
mxr_err(mdev, "failed to get mbus_fmt for output %s\n",
sd->name);
goto out;
}
ctrl.id = V4L2_CID_TV_GET_DVI_MODE;
ret = v4l2_subdev_call(sd, core, g_ctrl, &ctrl);
if (ret) {
mxr_err(mdev, "failed to get DVI or HDMI mode %s\n",
sd->name);
goto out;
}
mxr_reg_set_mbus_fmt(mdev, &mbus_fmt, ctrl.value);
ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mbus_fmt);
if (ret) {
mxr_err(mdev, "failed to set mbus_fmt for output %s\n",
sd->name);
goto out;
}
mxr_reg_streamon(mdev);
ret = v4l2_subdev_call(sd, video, s_stream, 1);
if (ret) {
mxr_err(mdev, "starting stream failed for output %s\n",
sd->name);
goto out;
}
ret = mxr_reg_wait4update(mdev);
if (ret) {
mxr_err(mdev, "failed to get vsync (%d) from output\n",
ret);
goto out;
}
}
out:
mutex_unlock(&mdev->s_mutex);
mxr_reg_dump(mdev);
return ret;
}
static int mxr_streamer_put(struct mxr_device *mdev, struct v4l2_subdev *sd)
{
int i;
int ret = 0;
int local = 1;
struct media_pad *pad;
struct sub_mxr_device *sub_mxr;
struct mxr_layer *layer;
struct v4l2_subdev *hdmi_sd;
struct v4l2_subdev *gsc_sd;
struct exynos_entity_data *md_data;
mutex_lock(&mdev->s_mutex);
--mdev->n_streamer;
mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer);
/* distinction number of local path */
if (mdev->mxr_data_from == FROM_GSC_SD) {
local = 0;
for (i = 0; i < MXR_MAX_SUB_MIXERS; ++i) {
sub_mxr = &mdev->sub_mxr[i];
if (sub_mxr->local)
local += sub_mxr->local;
}
if (local == 2)
mxr_layer_sync(mdev, MXR_DISABLE);
}
if ((mdev->n_streamer == 0 && local == 1) ||
(mdev->n_streamer == 1 && local == 2)) {
for (i = MXR_PAD_SOURCE_GSCALER; i < MXR_PADS_NUM; ++i) {
pad = &sd->entity.pads[i];
/* find sink pad of output via enabled link*/
pad = media_entity_remote_source(pad);
if (pad)
if (media_entity_type(pad->entity)
== MEDIA_ENT_T_V4L2_SUBDEV)
break;
if (i == MXR_PAD_SOURCE_GRP1) {
ret = -ENODEV;
goto out;
}
}
hdmi_sd = media_entity_to_v4l2_subdev(pad->entity);
mxr_reg_streamoff(mdev);
/* vsync applies Mixer setup */
ret = mxr_reg_wait4update(mdev);
if (ret) {
mxr_err(mdev, "failed to get vsync (%d) from output\n",
ret);
goto out;
}
}
/* When using local path between gscaler and mixer, below stop sequence
* must be processed */
if (mdev->mxr_data_from == FROM_GSC_SD) {
pad = &sd->entity.pads[MXR_PAD_SINK_GSCALER];
pad = media_entity_remote_source(pad);
if (pad) {
gsc_sd = media_entity_to_v4l2_subdev(
pad->entity);
mxr_dbg(mdev, "stop from %s\n", gsc_sd->name);
md_data = (struct exynos_entity_data *)
gsc_sd->dev_priv;
md_data->media_ops->power_off(gsc_sd);
}
}
if ((mdev->n_streamer == 0 && local == 1) ||
(mdev->n_streamer == 1 && local == 2)) {
ret = v4l2_subdev_call(hdmi_sd, video, s_stream, 0);
if (ret) {
mxr_err(mdev, "stopping stream failed for output %s\n",
hdmi_sd->name);
goto out;
}
}
/* turn off connected output device through link
* with mixer */
if (mdev->mxr_data_from == FROM_GSC_SD) {
for (i = 0; i < MXR_MAX_SUB_MIXERS; ++i) {
sub_mxr = &mdev->sub_mxr[i];
if (sub_mxr->local) {
layer = sub_mxr->layer[MXR_LAYER_VIDEO];
layer->ops.stream_set(layer, 0);
layer->pipe.state = MXR_PIPELINE_IDLE;
}
}
mxr_reg_local_path_clear(mdev);
mxr_output_put(mdev);
/* disable mixer clock */
mxr_power_put(mdev);
}
WARN(mdev->n_streamer < 0, "negative number of streamers (%d)\n",
mdev->n_streamer);
out:
mutex_unlock(&mdev->s_mutex);
mxr_reg_dump(mdev);
return ret;
}
/*
* isp_subdev_link_setup - Setup isp subdev connections
* @entity: ispsubdev media entity
* @local: Pad at the local end of the link
* @remote: Pad at the remote end of the link
* @flags: Link flags
*
* return -EINVAL or zero on success
*/
static int isp_subdev_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
struct atomisp_device *isp = isp_sd->isp;
unsigned int i;
switch (local->index | media_entity_type(remote->entity)) {
case ATOMISP_SUBDEV_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
/* Read from the sensor CSI2-ports. */
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
isp_sd->input = ATOMISP_SUBDEV_INPUT_NONE;
break;
}
if (isp_sd->input != ATOMISP_SUBDEV_INPUT_NONE)
return -EBUSY;
for (i = 0; i < ATOMISP_CAMERA_NR_PORTS; i++) {
if (remote->entity != &isp->csi2_port[i].subdev.entity)
continue;
isp_sd->input = ATOMISP_SUBDEV_INPUT_CSI2_PORT1 + i;
return 0;
}
return -EINVAL;
case ATOMISP_SUBDEV_PAD_SINK | MEDIA_ENT_T_DEVNODE:
/* read from memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (isp_sd->input >= ATOMISP_SUBDEV_INPUT_CSI2_PORT1 &&
isp_sd->input < (ATOMISP_SUBDEV_INPUT_CSI2_PORT1
+ ATOMISP_CAMERA_NR_PORTS))
return -EBUSY;
isp_sd->input = ATOMISP_SUBDEV_INPUT_MEMORY;
} else {
if (isp_sd->input == ATOMISP_SUBDEV_INPUT_MEMORY)
isp_sd->input = ATOMISP_SUBDEV_INPUT_NONE;
}
break;
case ATOMISP_SUBDEV_PAD_SOURCE_PREVIEW | MEDIA_ENT_T_DEVNODE:
/* always write to memory */
break;
case ATOMISP_SUBDEV_PAD_SOURCE_VF | MEDIA_ENT_T_DEVNODE:
/* always write to memory */
break;
case ATOMISP_SUBDEV_PAD_SOURCE_CAPTURE | MEDIA_ENT_T_DEVNODE:
/* always write to memory */
break;
default:
return -EINVAL;
}
return 0;
}
static int mxr_streamer_put(struct mxr_device *mdev, struct v4l2_subdev *sd)
{
int i;
int ret = 0;
int local = 1;
struct media_pad *pad;
struct sub_mxr_device *sub_mxr;
struct mxr_layer *layer;
struct v4l2_subdev *hdmi_sd;
struct v4l2_subdev *gsc_sd;
struct exynos_entity_data *md_data;
struct s5p_mxr_platdata *pdata = mdev->pdata;
struct v4l2_control ctrl;
mutex_lock(&mdev->s_mutex);
--mdev->n_streamer;
mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer);
/* distinction number of local path */
if (mdev->mxr_data_from == FROM_GSC_SD) {
local = 0;
for (i = 0; i < MXR_MAX_SUB_MIXERS; ++i) {
sub_mxr = &mdev->sub_mxr[i];
if (sub_mxr->local)
local += sub_mxr->local;
}
if (local == 2)
mxr_layer_sync(mdev, MXR_DISABLE);
/* stop gscaler --> waiting for frame done */
pad = &sd->entity.pads[MXR_PAD_SINK_GSCALER];
pad = media_entity_remote_source(pad);
if (pad) {
gsc_sd = media_entity_to_v4l2_subdev(
pad->entity);
mxr_dbg(mdev, "stop from %s\n", gsc_sd->name);
md_data = (struct exynos_entity_data *)
gsc_sd->dev_priv;
if (is_ip_ver_5g_1 || is_ip_ver_5a_0)
md_data->media_ops->power_off(gsc_sd);
}
/* disable video layer */
for (i = 0; i < MXR_MAX_SUB_MIXERS; ++i) {
sub_mxr = &mdev->sub_mxr[i];
if (sub_mxr->local) {
layer = sub_mxr->layer[MXR_LAYER_VIDEO];
layer->ops.stream_set(layer, 0);
layer->pipe.state = MXR_PIPELINE_IDLE;
}
}
}
if ((mdev->n_streamer == 0 && local == 1) ||
(mdev->n_streamer == 1 && local == 2)) {
for (i = MXR_PAD_SOURCE_GSCALER; i < MXR_PADS_NUM; ++i) {
pad = &sd->entity.pads[i];
/* find sink pad of output via enabled link*/
pad = media_entity_remote_source(pad);
if (pad)
if (media_entity_type(pad->entity)
== MEDIA_ENT_T_V4L2_SUBDEV)
break;
if (i == MXR_PAD_SOURCE_GRP1) {
ret = -ENODEV;
goto out;
}
}
hdmi_sd = media_entity_to_v4l2_subdev(pad->entity);
mxr_reg_streamoff(mdev);
/* vsync applies Mixer setup */
ret = mxr_reg_wait4update(mdev);
if (ret) {
mxr_err(mdev, "failed to get vsync (%d) from output\n",
ret);
goto out;
}
/* stop hdmi */
ctrl.id = V4L2_CID_TV_HDMI_STATUS;
ret = v4l2_subdev_call(hdmi_sd, core, g_ctrl, &ctrl);
if (ret) {
mxr_err(mdev, "failed to get output %s status for stop\n",
hdmi_sd->name);
goto out;
}
/*
* HDMI should be turn off only when not in use.
* 1. cable out
* 2. suspend (blank is called at suspend)
*/
if (ctrl.value == (HDMI_STREAMING | HPD_LOW) || mdev->blank) {
ret = v4l2_subdev_call(hdmi_sd, video, s_stream, 0);
if (ret) {
mxr_err(mdev, "stopping stream failed for output %s\n",
hdmi_sd->name);
goto out;
}
ret = v4l2_subdev_call(hdmi_sd, core, s_power, 0);
if (ret) {
mxr_err(mdev, "failed to put power for output %s\n",
hdmi_sd->name);
goto out;
}
mdev->blank = 0;
}
}
/* disable mixer clock */
if (mdev->mxr_data_from == FROM_GSC_SD)
mxr_power_put(mdev);
WARN(mdev->n_streamer < 0, "negative number of streamers (%d)\n",
mdev->n_streamer);
out:
#if defined(CONFIG_TV_USE_BUS_DEVFREQ)
if ((mdev->n_streamer == 0 && local == 1) ||
(mdev->n_streamer == 1 && local == 2)) {
if (is_ip_ver_5a)
pm_qos_remove_request(&exynos5_tv_mif_qos);
pm_qos_remove_request(&exynos5_tv_int_qos);
}
#endif
mutex_unlock(&mdev->s_mutex);
mxr_reg_dump(mdev);
return ret;
}
static int vdic_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct vdic_priv *priv = v4l2_get_subdevdata(sd);
struct v4l2_subdev *remote_sd;
int ret = 0;
dev_dbg(priv->dev, "link setup %s -> %s", remote->entity->name,
local->entity->name);
mutex_lock(&priv->lock);
if (local->flags & MEDIA_PAD_FL_SOURCE) {
if (!is_media_entity_v4l2_subdev(remote->entity)) {
ret = -EINVAL;
goto out;
}
remote_sd = media_entity_to_v4l2_subdev(remote->entity);
if (flags & MEDIA_LNK_FL_ENABLED) {
if (priv->sink_sd) {
ret = -EBUSY;
goto out;
}
priv->sink_sd = remote_sd;
} else {
priv->sink_sd = NULL;
}
goto out;
}
/* this is a sink pad */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (priv->src) {
ret = -EBUSY;
goto out;
}
} else {
priv->src = NULL;
goto out;
}
if (local->index == VDIC_SINK_PAD_IDMAC) {
struct imx_media_video_dev *vdev = priv->vdev;
if (!is_media_entity_v4l2_video_device(remote->entity)) {
ret = -EINVAL;
goto out;
}
if (!vdev) {
ret = -ENODEV;
goto out;
}
priv->csi_direct = false;
} else {
if (!is_media_entity_v4l2_subdev(remote->entity)) {
ret = -EINVAL;
goto out;
}
remote_sd = media_entity_to_v4l2_subdev(remote->entity);
/* direct pad must connect to a CSI */
if (!(remote_sd->grp_id & IMX_MEDIA_GRP_ID_IPU_CSI) ||
remote->index != CSI_SRC_PAD_DIRECT) {
ret = -EINVAL;
goto out;
}
priv->csi_direct = true;
}
priv->src = remote->entity;
/* record which input pad is now active */
priv->active_input_pad = local->index;
out:
mutex_unlock(&priv->lock);
return ret;
}
static int csi2_configure(struct isp_csi2_device *csi2)
{
const struct isp_v4l2_subdevs_group *pdata;
struct isp_device *isp = csi2->isp;
struct isp_csi2_timing_cfg *timing = &csi2->timing[0];
struct v4l2_subdev *sensor;
struct media_pad *pad;
/*
* CSI2 fields that can be updated while the context has
* been enabled or the interface has been enabled are not
* updated dynamically currently. So we do not allow to
* reconfigure if either has been enabled
*/
if (csi2->contexts[0].enabled || csi2->ctrl.if_enable)
return -EBUSY;
pad = media_entity_remote_pad(&csi2->pads[CSI2_PAD_SINK]);
sensor = media_entity_to_v4l2_subdev(pad->entity);
pdata = sensor->host_priv;
csi2->frame_skip = 0;
v4l2_subdev_call(sensor, sensor, g_skip_frames, &csi2->frame_skip);
csi2->ctrl.vp_out_ctrl = pdata->bus.csi2.vpclk_div;
csi2->ctrl.frame_mode = ISP_CSI2_FRAME_IMMEDIATE;
csi2->ctrl.ecc_enable = pdata->bus.csi2.crc;
timing->ionum = 1;
timing->force_rx_mode = 1;
timing->stop_state_16x = 1;
timing->stop_state_4x = 1;
timing->stop_state_counter = 0x1FF;
/*
* The CSI2 receiver can't do any format conversion except DPCM
* decompression, so every set_format call configures both pads
* and enables DPCM decompression as a special case:
*/
if (csi2->formats[CSI2_PAD_SINK].code !=
csi2->formats[CSI2_PAD_SOURCE].code)
csi2->dpcm_decompress = true;
else
csi2->dpcm_decompress = false;
csi2->contexts[0].format_id = csi2_ctx_map_format(csi2);
if (csi2->video_out.bpl_padding == 0)
csi2->contexts[0].data_offset = 0;
else
csi2->contexts[0].data_offset = csi2->video_out.bpl_value;
/*
* Enable end of frame and end of line signals generation for
* context 0. These signals are generated from CSI2 receiver to
* qualify the last pixel of a frame and the last pixel of a line.
* Without enabling the signals CSI2 receiver writes data to memory
* beyond buffer size and/or data line offset is not handled correctly.
*/
csi2->contexts[0].eof_enabled = 1;
csi2->contexts[0].eol_enabled = 1;
csi2_irq_complexio1_set(isp, csi2, 1);
csi2_irq_ctx_set(isp, csi2, 1);
csi2_irq_status_set(isp, csi2, 1);
/* Set configuration (timings, format and links) */
csi2_timing_config(isp, csi2, timing);
csi2_recv_config(isp, csi2, &csi2->ctrl);
csi2_ctx_config(isp, csi2, &csi2->contexts[0]);
return 0;
}
static int mxr_streamer_get(struct mxr_device *mdev, struct v4l2_subdev *sd)
{
int i;
int ret = 0;
int local = 1;
struct sub_mxr_device *sub_mxr;
struct mxr_layer *layer;
struct media_pad *pad;
struct s5p_mxr_platdata *pdata = mdev->pdata;
struct v4l2_mbus_framefmt mbus_fmt;
struct v4l2_control ctrl;
mutex_lock(&mdev->s_mutex);
++mdev->n_streamer;
mxr_dbg(mdev, "%s(%d)\n", __func__, mdev->n_streamer);
/* If pipeline is started from Gscaler input video device,
* TV basic configuration must be set before running mixer */
if (mdev->mxr_data_from == FROM_GSC_SD) {
mxr_dbg(mdev, "%s: from gscaler\n", __func__);
local = 0;
/* enable mixer clock */
ret = mxr_power_get(mdev);
if (ret < 0) {
mxr_err(mdev, "power on failed for video layer\n");
ret = -ENODEV;
goto out;
}
for (i = 0; i < MXR_MAX_SUB_MIXERS; ++i) {
sub_mxr = &mdev->sub_mxr[i];
if (sub_mxr->local) {
layer = sub_mxr->layer[MXR_LAYER_VIDEO];
layer->pipe.state = MXR_PIPELINE_STREAMING;
mxr_layer_geo_fix(layer);
layer->ops.format_set(layer, layer->fmt,
&layer->geo);
layer->ops.stream_set(layer, 1);
local += sub_mxr->local;
}
}
if (local == 2)
mxr_layer_sync(mdev, MXR_ENABLE);
/* Set the TVOUT register about gsc-mixer local path */
mxr_reg_local_path_set(mdev);
}
/* Alpha blending configuration always can be changed
* whenever streaming */
mxr_set_alpha_blend(mdev);
mxr_reg_set_color_range(mdev);
mxr_reg_set_layer_prio(mdev);
if (is_ip_ver_5s || is_ip_ver_5s2)
mxr_reg_set_resolution(mdev);
if ((mdev->n_streamer == 1 && local == 1) ||
(mdev->n_streamer == 2 && local == 2)) {
#if defined(CONFIG_TV_USE_BUS_DEVFREQ)
if (is_ip_ver_5a)
pm_qos_add_request(&exynos5_tv_mif_qos, PM_QOS_BUS_THROUGHPUT, 800000);
pm_qos_add_request(&exynos5_tv_int_qos, PM_QOS_DEVICE_THROUGHPUT, 400000);
#endif
for (i = MXR_PAD_SOURCE_GSCALER; i < MXR_PADS_NUM; ++i) {
pad = &sd->entity.pads[i];
/* find sink pad of output via enabled link*/
pad = media_entity_remote_source(pad);
if (pad)
if (media_entity_type(pad->entity)
== MEDIA_ENT_T_V4L2_SUBDEV)
break;
if (i == MXR_PAD_SOURCE_GRP1) {
ret = -ENODEV;
goto out;
}
}
sd = media_entity_to_v4l2_subdev(pad->entity);
mxr_dbg(mdev, "cookie of current output = (%d)\n",
to_output(mdev)->cookie);
mxr_reg_s_output(mdev, to_output(mdev)->cookie);
ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mbus_fmt);
if (ret) {
mxr_err(mdev, "failed to get mbus_fmt for output %s\n",
sd->name);
goto out;
}
ctrl.id = V4L2_CID_TV_GET_DVI_MODE;
ret = v4l2_subdev_call(sd, core, g_ctrl, &ctrl);
if (ret) {
mxr_err(mdev, "failed to get DVI or HDMI mode %s\n",
sd->name);
goto out;
}
mxr_reg_set_mbus_fmt(mdev, &mbus_fmt, ctrl.value);
ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mbus_fmt);
if (ret) {
mxr_err(mdev, "failed to set mbus_fmt for output %s\n",
sd->name);
goto out;
}
mxr_reg_streamon(mdev);
/* start hdmi */
ctrl.id = V4L2_CID_TV_HDMI_STATUS;
ret = v4l2_subdev_call(sd, core, g_ctrl, &ctrl);
if (ret) {
mxr_err(mdev, "failed to get output %s status for start\n",
sd->name);
goto out;
}
if (ctrl.value == (HDMI_STOP | HPD_HIGH)) {
ret = v4l2_subdev_call(sd, core, s_power, 1);
if (ret) {
mxr_err(mdev, "failed to get power for output %s\n",
sd->name);
goto out;
}
ret = v4l2_subdev_call(sd, video, s_stream, 1);
if (ret) {
mxr_err(mdev, "starting stream failed for output %s\n",
sd->name);
goto out;
}
}
ret = mxr_reg_wait4update(mdev);
if (ret) {
mxr_err(mdev, "failed to get vsync (%d) from output\n",
ret);
goto out;
}
}
out:
mutex_unlock(&mdev->s_mutex);
mxr_reg_dump(mdev);
return ret;
}