diff options
| -rw-r--r-- | drivers/media/video/s5p-fimc/fimc-capture.c | 47 | ||||
| -rw-r--r-- | drivers/media/video/s5p-fimc/fimc-core.h | 2 | ||||
| -rw-r--r-- | drivers/media/video/s5p-fimc/fimc-mdevice.c | 1 | ||||
| -rw-r--r-- | include/media/s5p_fimc.h | 9 |
4 files changed, 59 insertions, 0 deletions
diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c index adbbb63..7fafd12 100644 --- a/drivers/media/video/s5p-fimc/fimc-capture.c +++ b/drivers/media/video/s5p-fimc/fimc-capture.c @@ -1076,6 +1076,53 @@ static const struct media_entity_operations fimc_sd_media_ops = { .link_setup = fimc_link_setup, }; +/** + * fimc_sensor_notify - v4l2_device notification from a sensor subdev + * @sd: pointer to a subdev generating the notification + * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY + * @arg: pointer to an u32 type integer that stores the frame payload value + * + * The End Of Frame notification sent by sensor subdev in its still capture + * mode. If there is only a single VSYNC generated by the sensor at the + * beginning of a frame transmission, FIMC does not issue the LastIrq + * (end of frame) interrupt. And this notification is used to complete the + * frame capture and returning a buffer to user-space. Subdev drivers should + * call this notification from their last 'End of frame capture' interrupt. + */ +void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, + void *arg) +{ + struct fimc_sensor_info *sensor; + struct fimc_vid_buffer *buf; + struct fimc_md *fmd; + struct fimc_dev *fimc; + unsigned long flags; + + if (sd == NULL) + return; + + sensor = v4l2_get_subdev_hostdata(sd); + fmd = entity_to_fimc_mdev(&sd->entity); + + spin_lock_irqsave(&fmd->slock, flags); + fimc = sensor ? sensor->host : NULL; + + if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY && + test_bit(ST_CAPT_PEND, &fimc->state)) { + unsigned long irq_flags; + spin_lock_irqsave(&fimc->slock, irq_flags); + if (!list_empty(&fimc->vid_cap.active_buf_q)) { + buf = list_entry(fimc->vid_cap.active_buf_q.next, + struct fimc_vid_buffer, list); + vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg)); + } + fimc_capture_irq_handler(fimc, true); + fimc_deactivate_capture(fimc); + spin_unlock_irqrestore(&fimc->slock, irq_flags); + } + spin_unlock_irqrestore(&fmd->slock, flags); +} + static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) diff --git a/drivers/media/video/s5p-fimc/fimc-core.h b/drivers/media/video/s5p-fimc/fimc-core.h index 9b44875..6ec8b37 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.h +++ b/drivers/media/video/s5p-fimc/fimc-core.h @@ -723,6 +723,8 @@ void fimc_unregister_capture_device(struct fimc_dev *fimc); int fimc_capture_ctrls_create(struct fimc_dev *fimc); int fimc_vid_cap_buf_queue(struct fimc_dev *fimc, struct fimc_vid_buffer *fimc_vb); +void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, + void *arg); int fimc_capture_suspend(struct fimc_dev *fimc); int fimc_capture_resume(struct fimc_dev *fimc); int fimc_capture_config_update(struct fimc_ctx *ctx); diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c index db17a6f..cc337b1 100644 --- a/drivers/media/video/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/video/s5p-fimc/fimc-mdevice.c @@ -759,6 +759,7 @@ static int __devinit fimc_md_probe(struct platform_device *pdev) v4l2_dev = &fmd->v4l2_dev; v4l2_dev->mdev = &fmd->media_dev; + v4l2_dev->notify = fimc_sensor_notify; snprintf(v4l2_dev->name, sizeof(v4l2_dev->name), "%s", dev_name(&pdev->dev)); diff --git a/include/media/s5p_fimc.h b/include/media/s5p_fimc.h index 086a7aa..2b58904 100644 --- a/include/media/s5p_fimc.h +++ b/include/media/s5p_fimc.h @@ -60,4 +60,13 @@ struct s5p_platform_fimc { struct s5p_fimc_isp_info *isp_info; int num_clients; }; + +/* + * v4l2_device notification id. This is only for internal use in the kernel. + * Sensor subdevs should issue S5P_FIMC_TX_END_NOTIFY notification in single + * frame capture mode when there is only one VSYNC pulse issued by the sensor + * at begining of the frame transmission. + */ +#define S5P_FIMC_TX_END_NOTIFY _IO('e', 0) + #endif /* S5P_FIMC_H_ */ |
