From: Sylwester Nawrocki Date: Fri, 20 Apr 2012 21:57:25 +0000 (-0300) Subject: [media] s5p-fimc: Use v4l2_subdev internal ops to register video nodes X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=693f5c40825e91632478624bf0366e6ebf862a25;p=openwrt%2Fstaging%2Fblogic.git [media] s5p-fimc: Use v4l2_subdev internal ops to register video nodes In order to be able to select only FIMC-LITE support, which is added with subsequent patches, the regular FIMC support is now contained only in fimc-core.c, fimc-m2m.c and fimc-capture.c files. The graph and pipeline management is now solely handled in fimc-mdevice.[ch]. This means the FIMC driver can now be excluded with Kconfig option, leaving only FIMC-LITE and allowing this driver to be reused in SoCs that have only FIMC-LITE and no regular FIMC IP. Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/s5p-fimc/fimc-capture.c b/drivers/media/video/s5p-fimc/fimc-capture.c index 0051d8161c6c..b45da2780213 100644 --- a/drivers/media/video/s5p-fimc/fimc-capture.c +++ b/drivers/media/video/s5p-fimc/fimc-capture.c @@ -993,7 +993,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc) if (!(pad->flags & MEDIA_PAD_FL_SINK)) break; /* Don't call FIMC subdev operation to avoid nested locking */ - if (sd == fimc->vid_cap.subdev) { + if (sd == &fimc->vid_cap.subdev) { struct fimc_frame *ff = &vid_cap->ctx->s_frame; sink_fmt.format.width = ff->f_width; sink_fmt.format.height = ff->f_height; @@ -1489,53 +1489,6 @@ static struct v4l2_subdev_ops fimc_subdev_ops = { .pad = &fimc_subdev_pad_ops, }; -static int fimc_create_capture_subdev(struct fimc_dev *fimc, - struct v4l2_device *v4l2_dev) -{ - struct v4l2_subdev *sd; - int ret; - - sd = kzalloc(sizeof(*sd), GFP_KERNEL); - if (!sd) - return -ENOMEM; - - v4l2_subdev_init(sd, &fimc_subdev_ops); - sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE; - snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id); - - fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; - fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, - fimc->vid_cap.sd_pads, 0); - if (ret) - goto me_err; - ret = v4l2_device_register_subdev(v4l2_dev, sd); - if (ret) - goto sd_err; - - fimc->vid_cap.subdev = sd; - v4l2_set_subdevdata(sd, fimc); - sd->entity.ops = &fimc_sd_media_ops; - return 0; -sd_err: - media_entity_cleanup(&sd->entity); -me_err: - kfree(sd); - return ret; -} - -static void fimc_destroy_capture_subdev(struct fimc_dev *fimc) -{ - struct v4l2_subdev *sd = fimc->vid_cap.subdev; - - if (!sd) - return; - media_entity_cleanup(&sd->entity); - v4l2_device_unregister_subdev(sd); - kfree(sd); - fimc->vid_cap.subdev = NULL; -} - /* Set default format at the sensor and host interface */ static int fimc_capture_set_default_format(struct fimc_dev *fimc) { @@ -1554,7 +1507,7 @@ static int fimc_capture_set_default_format(struct fimc_dev *fimc) } /* fimc->lock must be already initialized */ -int fimc_register_capture_device(struct fimc_dev *fimc, +static int fimc_register_capture_device(struct fimc_dev *fimc, struct v4l2_device *v4l2_dev) { struct video_device *vfd; @@ -1572,7 +1525,7 @@ int fimc_register_capture_device(struct fimc_dev *fimc, ctx->out_path = FIMC_DMA; ctx->state = FIMC_CTX_CAP; ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); - ctx->d_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); + ctx->d_frame.fmt = ctx->s_frame.fmt; vfd = video_device_alloc(); if (!vfd) { @@ -1580,8 +1533,7 @@ int fimc_register_capture_device(struct fimc_dev *fimc, goto err_vd_alloc; } - snprintf(vfd->name, sizeof(vfd->name), "%s.capture", - dev_name(&fimc->pdev->dev)); + snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id); vfd->fops = &fimc_capture_fops; vfd->ioctl_ops = &fimc_capture_ioctl_ops; @@ -1616,18 +1568,22 @@ int fimc_register_capture_device(struct fimc_dev *fimc, vb2_queue_init(q); - fimc->vid_cap.vd_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &fimc->vid_cap.vd_pad, 0); + vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0); if (ret) goto err_ent; - ret = fimc_create_capture_subdev(fimc, v4l2_dev); + + ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); if (ret) - goto err_sd_reg; + goto err_vd; + + v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", + vfd->name, video_device_node_name(vfd)); vfd->ctrl_handler = &ctx->ctrl_handler; return 0; -err_sd_reg: +err_vd: media_entity_cleanup(&vfd->entity); err_ent: video_device_release(vfd); @@ -1636,17 +1592,73 @@ err_vd_alloc: return ret; } -void fimc_unregister_capture_device(struct fimc_dev *fimc) +static int fimc_capture_subdev_registered(struct v4l2_subdev *sd) { - struct video_device *vfd = fimc->vid_cap.vfd; + struct fimc_dev *fimc = v4l2_get_subdevdata(sd); + int ret; - if (vfd) { - media_entity_cleanup(&vfd->entity); - /* Can also be called if video device was - not registered */ - video_unregister_device(vfd); + ret = fimc_register_m2m_device(fimc, sd->v4l2_dev); + if (ret) + return ret; + + ret = fimc_register_capture_device(fimc, sd->v4l2_dev); + if (ret) + fimc_unregister_m2m_device(fimc); + + return ret; +} + +static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd) +{ + struct fimc_dev *fimc = v4l2_get_subdevdata(sd); + + if (fimc == NULL) + return; + + fimc_unregister_m2m_device(fimc); + + if (fimc->vid_cap.vfd) { + media_entity_cleanup(&fimc->vid_cap.vfd->entity); + video_unregister_device(fimc->vid_cap.vfd); + fimc->vid_cap.vfd = NULL; } - fimc_destroy_capture_subdev(fimc); + kfree(fimc->vid_cap.ctx); fimc->vid_cap.ctx = NULL; } + +static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = { + .registered = fimc_capture_subdev_registered, + .unregistered = fimc_capture_subdev_unregistered, +}; + +int fimc_initialize_capture_subdev(struct fimc_dev *fimc) +{ + struct v4l2_subdev *sd = &fimc->vid_cap.subdev; + int ret; + + v4l2_subdev_init(sd, &fimc_subdev_ops); + sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE; + snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id); + + fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, + fimc->vid_cap.sd_pads, 0); + if (ret) + return ret; + + sd->entity.ops = &fimc_sd_media_ops; + sd->internal_ops = &fimc_capture_sd_internal_ops; + v4l2_set_subdevdata(sd, fimc); + return 0; +} + +void fimc_unregister_capture_subdev(struct fimc_dev *fimc) +{ + struct v4l2_subdev *sd = &fimc->vid_cap.subdev; + + v4l2_device_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_set_subdevdata(sd, NULL); +} diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c index 749db4deefcb..add24cd373a5 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -842,8 +842,6 @@ static int fimc_probe(struct platform_device *pdev) clk_set_rate(fimc->clock[CLK_BUS], drv_data->lclk_frequency); clk_enable(fimc->clock[CLK_BUS]); - platform_set_drvdata(pdev, fimc); - ret = devm_request_irq(&pdev->dev, res->start, fimc_irq_handler, 0, pdev->name, fimc); if (ret) { @@ -851,10 +849,15 @@ static int fimc_probe(struct platform_device *pdev) goto err_clk; } + ret = fimc_initialize_capture_subdev(fimc); + if (ret) + goto err_clk; + + platform_set_drvdata(pdev, fimc); pm_runtime_enable(&pdev->dev); ret = pm_runtime_get_sync(&pdev->dev); if (ret < 0) - goto err_clk; + goto err_sd; /* Initialize contiguous memory allocator */ fimc->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); if (IS_ERR(fimc->alloc_ctx)) { @@ -866,9 +869,10 @@ static int fimc_probe(struct platform_device *pdev) pm_runtime_put(&pdev->dev); return 0; - err_pm: pm_runtime_put(&pdev->dev); +err_sd: + fimc_unregister_capture_subdev(fimc); err_clk: fimc_clk_put(fimc); return ret; @@ -953,6 +957,7 @@ static int __devexit fimc_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); pm_runtime_set_suspended(&pdev->dev); + fimc_unregister_capture_subdev(fimc); vb2_dma_contig_cleanup_ctx(fimc->alloc_ctx); clk_disable(fimc->clock[CLK_BUS]); diff --git a/drivers/media/video/s5p-fimc/fimc-core.h b/drivers/media/video/s5p-fimc/fimc-core.h index 288631a86e53..ef7c6a23ca2a 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.h +++ b/drivers/media/video/s5p-fimc/fimc-core.h @@ -331,7 +331,7 @@ struct fimc_vid_cap { struct fimc_ctx *ctx; struct vb2_alloc_ctx *alloc_ctx; struct video_device *vfd; - struct v4l2_subdev *subdev; + struct v4l2_subdev subdev; struct media_pad vd_pad; struct v4l2_mbus_framefmt mf; struct media_pad sd_pads[FIMC_SD_PADS_NUM]; @@ -737,9 +737,8 @@ void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state); /* -----------------------------------------------------*/ /* fimc-capture.c */ -int fimc_register_capture_device(struct fimc_dev *fimc, - struct v4l2_device *v4l2_dev); -void fimc_unregister_capture_device(struct fimc_dev *fimc); +int fimc_initialize_capture_subdev(struct fimc_dev *fimc); +void fimc_unregister_capture_subdev(struct fimc_dev *fimc); int fimc_capture_ctrls_create(struct fimc_dev *fimc); void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, void *arg); diff --git a/drivers/media/video/s5p-fimc/fimc-m2m.c b/drivers/media/video/s5p-fimc/fimc-m2m.c index 9935cc4bd0cb..92b6059b25bf 100644 --- a/drivers/media/video/s5p-fimc/fimc-m2m.c +++ b/drivers/media/video/s5p-fimc/fimc-m2m.c @@ -776,7 +776,7 @@ int fimc_register_m2m_device(struct fimc_dev *fimc, This driver needs auditing so that this flag can be removed. */ set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); - snprintf(vfd->name, sizeof(vfd->name), "%s.m2m", dev_name(&pdev->dev)); + snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id); video_set_drvdata(vfd, fimc); fimc->m2m.vfd = vfd; @@ -788,9 +788,20 @@ int fimc_register_m2m_device(struct fimc_dev *fimc, } ret = media_entity_init(&vfd->entity, 0, NULL, 0); - if (!ret) - return 0; + if (ret) + goto err_me; + + ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); + if (ret) + goto err_vd; + + v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", + vfd->name, video_device_node_name(vfd)); + return 0; +err_vd: + media_entity_cleanup(&vfd->entity); +err_me: v4l2_m2m_release(fimc->m2m.m2m_dev); err_init: video_device_release(fimc->m2m.vfd); diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.c b/drivers/media/video/s5p-fimc/fimc-mdevice.c index f97ac02b8677..c319842c762d 100644 --- a/drivers/media/video/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/video/s5p-fimc/fimc-mdevice.c @@ -304,8 +304,9 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd) static int fimc_register_callback(struct device *dev, void *p) { struct fimc_dev *fimc = dev_get_drvdata(dev); + struct v4l2_subdev *sd = &fimc->vid_cap.subdev; struct fimc_md *fmd = p; - int ret; + int ret = 0; if (!fimc || !fimc->pdev) return 0; @@ -313,12 +314,14 @@ static int fimc_register_callback(struct device *dev, void *p) return 0; fmd->fimc[fimc->pdev->id] = fimc; - ret = fimc_register_m2m_device(fimc, &fmd->v4l2_dev); - if (ret) - return ret; - ret = fimc_register_capture_device(fimc, &fmd->v4l2_dev); - if (!ret) - fimc->vid_cap.user_subdev_api = fmd->user_subdev_api; + sd->grp_id = FIMC_GROUP_ID; + + ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); + if (ret) { + v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n", + fimc->id, ret); + } + return ret; } @@ -401,8 +404,7 @@ static void fimc_md_unregister_entities(struct fimc_md *fmd) for (i = 0; i < FIMC_MAX_DEVS; i++) { if (fmd->fimc[i] == NULL) continue; - fimc_unregister_m2m_device(fmd->fimc[i]); - fimc_unregister_capture_device(fmd->fimc[i]); + v4l2_device_unregister_subdev(&fmd->fimc[i]->vid_cap.subdev); fmd->fimc[i] = NULL; } for (i = 0; i < CSIS_MAX_ENTITIES; i++) { @@ -420,35 +422,6 @@ static void fimc_md_unregister_entities(struct fimc_md *fmd) } } -static int fimc_md_register_video_nodes(struct fimc_md *fmd) -{ - struct video_device *vdev; - int i, ret = 0; - - for (i = 0; i < FIMC_MAX_DEVS && !ret; i++) { - if (!fmd->fimc[i]) - continue; - - vdev = fmd->fimc[i]->m2m.vfd; - if (vdev) { - ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); - if (ret) - break; - v4l2_info(&fmd->v4l2_dev, "Registered %s as /dev/%s\n", - vdev->name, video_device_node_name(vdev)); - } - - vdev = fmd->fimc[i]->vid_cap.vfd; - if (vdev == NULL) - continue; - ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); - v4l2_info(&fmd->v4l2_dev, "Registered %s as /dev/%s\n", - vdev->name, video_device_node_name(vdev)); - } - - return ret; -} - /** * __fimc_md_create_fimc_links - create links to all FIMC entities * @fmd: fimc media device @@ -479,7 +452,7 @@ static int __fimc_md_create_fimc_links(struct fimc_md *fmd, continue; flags = (i == fimc_id) ? MEDIA_LNK_FL_ENABLED : 0; - sink = &fmd->fimc[i]->vid_cap.subdev->entity; + sink = &fmd->fimc[i]->vid_cap.subdev.entity; ret = media_entity_create_link(source, pad, sink, FIMC_SD_PAD_SINK, flags); if (ret) @@ -588,7 +561,7 @@ static int fimc_md_create_links(struct fimc_md *fmd) for (i = 0; i < FIMC_MAX_DEVS; i++) { if (!fmd->fimc[i]) continue; - source = &fmd->fimc[i]->vid_cap.subdev->entity; + source = &fmd->fimc[i]->vid_cap.subdev.entity; sink = &fmd->fimc[i]->vid_cap.vfd->entity; ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, sink, 0, flags); @@ -817,42 +790,48 @@ static int fimc_md_probe(struct platform_device *pdev) ret = media_device_register(&fmd->media_dev); if (ret < 0) { v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret); - goto err2; + goto err_md; } ret = fimc_md_get_clocks(fmd); if (ret) - goto err3; + goto err_clk; fmd->user_subdev_api = false; + + /* Protect the media graph while we're registering entities */ + mutex_lock(&fmd->media_dev.graph_mutex); + ret = fimc_md_register_platform_entities(fmd); if (ret) - goto err3; + goto err_unlock; if (pdev->dev.platform_data) { ret = fimc_md_register_sensor_entities(fmd); if (ret) - goto err3; + goto err_unlock; } ret = fimc_md_create_links(fmd); if (ret) - goto err3; + goto err_unlock; ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev); if (ret) - goto err3; - ret = fimc_md_register_video_nodes(fmd); - if (ret) - goto err3; + goto err_unlock; ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode); - if (!ret) { - platform_set_drvdata(pdev, fmd); - return 0; - } -err3: + if (ret) + goto err_unlock; + + platform_set_drvdata(pdev, fmd); + mutex_unlock(&fmd->media_dev.graph_mutex); + return 0; + +err_unlock: + mutex_unlock(&fmd->media_dev.graph_mutex); +err_clk: media_device_unregister(&fmd->media_dev); fimc_md_put_clocks(fmd); fimc_md_unregister_entities(fmd); -err2: +err_md: v4l2_device_unregister(&fmd->v4l2_dev); return ret; } diff --git a/drivers/media/video/s5p-fimc/fimc-mdevice.h b/drivers/media/video/s5p-fimc/fimc-mdevice.h index da3780823e7d..4f3b69c682cb 100644 --- a/drivers/media/video/s5p-fimc/fimc-mdevice.h +++ b/drivers/media/video/s5p-fimc/fimc-mdevice.h @@ -24,6 +24,7 @@ #define SENSOR_GROUP_ID (1 << 8) #define CSIS_GROUP_ID (1 << 9) #define WRITEBACK_GROUP_ID (1 << 10) +#define FIMC_GROUP_ID (1 << 11) #define FIMC_MAX_SENSORS 8 #define FIMC_MAX_CAMCLKS 2