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media: Revert "media: staging/intel-ipu3: make imgu use fixed running mode" 

This reverts commit e878742c83.

Imgu should still keep the capability and flexibility to allow user to
run 2 video pipes, as the user may use the video pipe to capture still
frames with less system load and power than still pipe.

Suggested-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Bingbu Cao 2020-01-17 09:18:30 +01:00 committed by Mauro Carvalho Chehab
parent a03003c528
commit 0b09f98987
4 changed files with 77 additions and 12 deletions
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6
Documentation/media/v4l-drivers/ipu3.rst
View File

@ -234,9 +234,9 @@ The IPU3 ImgU pipelines can be configured using the Media Controller, defined at
Firmware binary selection
-------------------------
The firmware binary is selected according to the running mode of imgu. There are
2 modes are available - "video" and "still". "ipu3-imgu video" are running under
"video" mode and "ipu3-imgu still" is running under "still" mode.
The firmware binary is selected using the V4L2_CID_INTEL_IPU3_MODE, currently
defined in drivers/staging/media/ipu3/include/intel-ipu3.h . "VIDEO" and "STILL"
modes are available.
Processing the image in raw Bayer format
----------------------------------------

4
drivers/staging/media/ipu3/include/intel-ipu3.h
View File

@ -12,6 +12,10 @@
#define V4L2_META_FMT_IPU3_PARAMS v4l2_fourcc('i', 'p', '3', 'p') /* IPU3 processing parameters */
#define V4L2_META_FMT_IPU3_STAT_3A v4l2_fourcc('i', 'p', '3', 's') /* IPU3 3A statistics */
/* from include/uapi/linux/v4l2-controls.h */
#define V4L2_CID_INTEL_IPU3_BASE (V4L2_CID_USER_BASE + 0x10c0)
#define V4L2_CID_INTEL_IPU3_MODE (V4L2_CID_INTEL_IPU3_BASE + 1)
/******************* ipu3_uapi_stats_3a *******************/
#define IPU3_UAPI_MAX_STRIPES 2

74
drivers/staging/media/ipu3/ipu3-v4l2.c
View File

@ -67,6 +67,8 @@ static int imgu_subdev_s_stream(struct v4l2_subdev *sd, int enable)
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
dev_dbg(dev, "%s %d for pipe %u", __func__, enable, pipe);
/* grab ctrl after streamon and return after off */
v4l2_ctrl_grab(imgu_sd->ctrl, enable);
if (!enable) {
imgu_sd->active = false;
@ -94,7 +96,7 @@ static int imgu_subdev_s_stream(struct v4l2_subdev *sd, int enable)
if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
css_pipe->vf_output_en = true;
if (imgu_sd->running_mode == IPU3_RUNNING_MODE_VIDEO)
if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
else
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
@ -666,7 +668,7 @@ static int imgu_fmt(struct imgu_device *imgu, unsigned int pipe, int node,
if (imgu_pipe->nodes[IMGU_NODE_VF].enabled)
css_pipe->vf_output_en = true;
if (imgu_sd->running_mode == IPU3_RUNNING_MODE_VIDEO)
if (atomic_read(&imgu_sd->running_mode) == IPU3_RUNNING_MODE_VIDEO)
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_VIDEO;
else
css_pipe->pipe_id = IPU3_CSS_PIPE_ID_CAPTURE;
@ -897,6 +899,11 @@ static struct v4l2_subdev_internal_ops imgu_subdev_internal_ops = {
.open = imgu_subdev_open,
};
static const struct v4l2_subdev_core_ops imgu_subdev_core_ops = {
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_video_ops imgu_subdev_video_ops = {
.s_stream = imgu_subdev_s_stream,
};
@ -910,6 +917,7 @@ static const struct v4l2_subdev_pad_ops imgu_subdev_pad_ops = {
};
static const struct v4l2_subdev_ops imgu_subdev_ops = {
.core = &imgu_subdev_core_ops,
.video = &imgu_subdev_video_ops,
.pad = &imgu_subdev_pad_ops,
};
@ -1003,6 +1011,44 @@ static const struct v4l2_ioctl_ops imgu_v4l2_meta_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
};
static int imgu_sd_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct imgu_v4l2_subdev *imgu_sd =
container_of(ctrl->handler, struct imgu_v4l2_subdev, ctrl_handler);
struct imgu_device *imgu = v4l2_get_subdevdata(&imgu_sd->subdev);
struct device *dev = &imgu->pci_dev->dev;
dev_dbg(dev, "set val %d to ctrl 0x%8x for subdev %u",
ctrl->val, ctrl->id, imgu_sd->pipe);
switch (ctrl->id) {
case V4L2_CID_INTEL_IPU3_MODE:
atomic_set(&imgu_sd->running_mode, ctrl->val);
return 0;
default:
return -EINVAL;
}
}
static const struct v4l2_ctrl_ops imgu_subdev_ctrl_ops = {
.s_ctrl = imgu_sd_s_ctrl,
};
static const char * const imgu_ctrl_mode_strings[] = {
"Video mode",
"Still mode",
};
static const struct v4l2_ctrl_config imgu_subdev_ctrl_mode = {
.ops = &imgu_subdev_ctrl_ops,
.id = V4L2_CID_INTEL_IPU3_MODE,
.name = "IPU3 Pipe Mode",
.type = V4L2_CTRL_TYPE_MENU,
.max = ARRAY_SIZE(imgu_ctrl_mode_strings) - 1,
.def = IPU3_RUNNING_MODE_VIDEO,
.qmenu = imgu_ctrl_mode_strings,
};
/******************** Framework registration ********************/
/* helper function to config node's video properties */
@ -1048,6 +1094,7 @@ static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
unsigned int pipe)
{
int i, r;
struct v4l2_ctrl_handler *hdl = &imgu_sd->ctrl_handler;
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[pipe];
/* Initialize subdev media entity */
@ -1068,12 +1115,21 @@ static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
v4l2_subdev_init(&imgu_sd->subdev, &imgu_subdev_ops);
imgu_sd->subdev.entity.function = MEDIA_ENT_F_PROC_VIDEO_STATISTICS;
imgu_sd->subdev.internal_ops = &imgu_subdev_internal_ops;
imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
imgu_sd->subdev.flags = V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
snprintf(imgu_sd->subdev.name, sizeof(imgu_sd->subdev.name),
"%s %s", IMGU_NAME, pipe ? "still" : "video");
"%s %u", IMGU_NAME, pipe);
v4l2_set_subdevdata(&imgu_sd->subdev, imgu);
imgu_sd->running_mode =
pipe ? IPU3_RUNNING_MODE_STILL : IPU3_RUNNING_MODE_VIDEO;
atomic_set(&imgu_sd->running_mode, IPU3_RUNNING_MODE_VIDEO);
v4l2_ctrl_handler_init(hdl, 1);
imgu_sd->subdev.ctrl_handler = hdl;
imgu_sd->ctrl = v4l2_ctrl_new_custom(hdl, &imgu_subdev_ctrl_mode, NULL);
if (hdl->error) {
r = hdl->error;
dev_err(&imgu->pci_dev->dev,
"failed to create subdev v4l2 ctrl with err %d", r);
goto fail_subdev;
}
r = v4l2_device_register_subdev(&imgu->v4l2_dev, &imgu_sd->subdev);
if (r) {
dev_err(&imgu->pci_dev->dev,
@ -1085,6 +1141,7 @@ static int imgu_v4l2_subdev_register(struct imgu_device *imgu,
return 0;
fail_subdev:
v4l2_ctrl_handler_free(imgu_sd->subdev.ctrl_handler);
media_entity_cleanup(&imgu_sd->subdev.entity);
return r;
@ -1179,8 +1236,8 @@ static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe,
}
/* Initialize vdev */
snprintf(vdev->name, sizeof(vdev->name), "%s %s %s",
IMGU_NAME, pipe ? "still" : "video", node->name);
snprintf(vdev->name, sizeof(vdev->name), "%s %u %s",
IMGU_NAME, pipe, node->name);
vdev->release = video_device_release_empty;
vdev->fops = &imgu_v4l2_fops;
vdev->lock = &node->lock;
@ -1255,6 +1312,7 @@ static void imgu_v4l2_subdev_cleanup(struct imgu_device *imgu, unsigned int i)
struct imgu_media_pipe *imgu_pipe = &imgu->imgu_pipe[i];
v4l2_device_unregister_subdev(&imgu_pipe->imgu_sd.subdev);
v4l2_ctrl_handler_free(imgu_pipe->imgu_sd.subdev.ctrl_handler);
media_entity_cleanup(&imgu_pipe->imgu_sd.subdev.entity);
}

5
drivers/staging/media/ipu3/ipu3.h
View File

@ -7,6 +7,7 @@
#include <linux/iova.h>
#include <linux/pci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/videobuf2-dma-sg.h>
@ -95,7 +96,9 @@ struct imgu_v4l2_subdev {
struct v4l2_rect bds; /* bayer-domain scaled resolution*/
struct v4l2_rect gdc; /* gdc output resolution */
} rect;
unsigned int running_mode;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *ctrl;
atomic_t running_mode;
bool active;
};