From 756e6e14484b3249dad9663ed1398711b62676a3 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 8 Apr 2013 13:17:36 -0300 Subject: [PATCH] [media] exynos4-is: Make fimc-lite independent of the pipeline->subdevs array Get the sensor subdev by walking media graph in both cases: when the device is used as a subdev only and through video node. This allows to not dereference the pipeline->subdevs[] array and makes the module more generic and easier to re-use in other media driver. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/fimc-lite.c | 57 +++++++++++++-------------- 1 file changed, 28 insertions(+), 29 deletions(-) diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index cb196b85a858..3ea4fc7beaf7 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -130,23 +130,43 @@ static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat, return def_fmt; } +/* Called with the media graph mutex held or @me stream_count > 0. */ +static struct v4l2_subdev *__find_remote_sensor(struct media_entity *me) +{ + struct media_pad *pad = &me->pads[0]; + struct v4l2_subdev *sd; + + while (pad->flags & MEDIA_PAD_FL_SINK) { + /* 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); + + 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; +} + static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output) { - struct fimc_pipeline *pipeline = &fimc->pipeline; - struct v4l2_subdev *sensor; struct fimc_sensor_info *si; unsigned long flags; - sensor = isp_output ? fimc->sensor : pipeline->subdevs[IDX_SENSOR]; - - if (sensor == NULL) + if (fimc->sensor == NULL) return -ENXIO; if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL) return -EINVAL; /* Get sensor configuration data from the sensor subdev */ - si = v4l2_get_subdev_hostdata(sensor); + si = v4l2_get_subdev_hostdata(fimc->sensor); spin_lock_irqsave(&fimc->slock, flags); flite_hw_set_camera_bus(fimc, &si->pdata); @@ -801,6 +821,8 @@ static int fimc_lite_streamon(struct file *file, void *priv, if (ret < 0) goto err_p_stop; + fimc->sensor = __find_remote_sensor(&fimc->subdev.entity); + ret = vb2_ioctl_streamon(file, priv, type); if (!ret) { fimc->streaming = true; @@ -929,29 +951,6 @@ static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = { .vidioc_streamoff = fimc_lite_streamoff, }; -/* Called with the media graph mutex held */ -static struct v4l2_subdev *__find_remote_sensor(struct media_entity *me) -{ - struct media_pad *pad = &me->pads[0]; - struct v4l2_subdev *sd; - - while (pad->flags & MEDIA_PAD_FL_SINK) { - /* 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); - - if (sd->grp_id == GRP_ID_FIMC_IS_SENSOR) - return sd; - /* sink pad */ - pad = &sd->entity.pads[0]; - } - return NULL; -} - /* Capture subdev media entity operations */ static int fimc_lite_link_setup(struct media_entity *entity, const struct media_pad *local, -- 2.11.0