Commit e1d72f4d authored by Sylwester Nawrocki's avatar Sylwester Nawrocki Committed by Mauro Carvalho Chehab
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[media] s5p-fimc: Add v4l2_device notification support for single frame capture 



Signed-off-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent ee7160e5

drivers/media/video/s5p-fimc/fimc-capture.c

+47 −0
Original line number Diff line number Diff line
@@ -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)

drivers/media/video/s5p-fimc/fimc-core.h

+2 −0
Original line number Diff line number Diff line
@@ -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);

drivers/media/video/s5p-fimc/fimc-mdevice.c

+1 −0
Original line number Diff line number Diff line
@@ -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));

include/media/s5p_fimc.h

+9 −0
Original line number Diff line number Diff line
@@ -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_ */