diff options
Diffstat (limited to 'drivers/media/platform/s5p-fimc/fimc-mdevice.c')
| -rw-r--r-- | drivers/media/platform/s5p-fimc/fimc-mdevice.c | 400 |
1 files changed, 203 insertions, 197 deletions
diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c index b4a68ecf0ca7..a17fcb2d5d41 100644 --- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c @@ -1,8 +1,8 @@ /* * S5P/EXYNOS4 SoC series camera host interface media device driver * - * Copyright (C) 2011 Samsung Electronics Co., Ltd. - * Contact: Sylwester Nawrocki, <s.nawrocki@samsung.com> + * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. + * Sylwester Nawrocki <s.nawrocki@samsung.com> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published @@ -62,16 +62,17 @@ static void fimc_pipeline_prepare(struct fimc_pipeline *p, sd = media_entity_to_v4l2_subdev(pad->entity); switch (sd->grp_id) { - case SENSOR_GROUP_ID: + case GRP_ID_FIMC_IS_SENSOR: + case GRP_ID_SENSOR: p->subdevs[IDX_SENSOR] = sd; break; - case CSIS_GROUP_ID: + case GRP_ID_CSIS: p->subdevs[IDX_CSIS] = sd; break; - case FLITE_GROUP_ID: + case GRP_ID_FLITE: p->subdevs[IDX_FLITE] = sd; break; - case FIMC_GROUP_ID: + case GRP_ID_FIMC: /* No need to control FIMC subdev through subdev ops */ break; default: @@ -141,7 +142,7 @@ static int fimc_pipeline_s_power(struct fimc_pipeline *p, bool state) * @me: media entity to start graph walk with * @prep: true to acquire sensor (and csis) subdevs * - * This function must be called with the graph mutex held. + * Called with the graph mutex held. */ static int __fimc_pipeline_open(struct fimc_pipeline *p, struct media_entity *me, bool prep) @@ -161,30 +162,19 @@ static int __fimc_pipeline_open(struct fimc_pipeline *p, return fimc_pipeline_s_power(p, 1); } -static int fimc_pipeline_open(struct fimc_pipeline *p, - struct media_entity *me, bool prep) -{ - int ret; - - mutex_lock(&me->parent->graph_mutex); - ret = __fimc_pipeline_open(p, me, prep); - mutex_unlock(&me->parent->graph_mutex); - - return ret; -} - /** * __fimc_pipeline_close - disable the sensor clock and pipeline power * @fimc: fimc device terminating the pipeline * - * Disable power of all subdevs in the pipeline and turn off the external - * sensor clock. - * Called with the graph mutex held. + * Disable power of all subdevs and turn the external sensor clock off. */ static int __fimc_pipeline_close(struct fimc_pipeline *p) { int ret = 0; + if (!p || !p->subdevs[IDX_SENSOR]) + return -EINVAL; + if (p->subdevs[IDX_SENSOR]) { ret = fimc_pipeline_s_power(p, 0); fimc_md_set_camclk(p->subdevs[IDX_SENSOR], false); @@ -192,28 +182,12 @@ static int __fimc_pipeline_close(struct fimc_pipeline *p) return ret == -ENXIO ? 0 : ret; } -static int fimc_pipeline_close(struct fimc_pipeline *p) -{ - struct media_entity *me; - int ret; - - if (!p || !p->subdevs[IDX_SENSOR]) - return -EINVAL; - - me = &p->subdevs[IDX_SENSOR]->entity; - mutex_lock(&me->parent->graph_mutex); - ret = __fimc_pipeline_close(p); - mutex_unlock(&me->parent->graph_mutex); - - return ret; -} - /** - * fimc_pipeline_s_stream - invoke s_stream on pipeline subdevs + * __fimc_pipeline_s_stream - invoke s_stream on pipeline subdevs * @pipeline: video pipeline structure * @on: passed as the s_stream call argument */ -static int fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) +static int __fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) { int i, ret; @@ -235,9 +209,9 @@ static int fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) /* Media pipeline operations for the FIMC/FIMC-LITE video device driver */ static const struct fimc_pipeline_ops fimc_pipeline_ops = { - .open = fimc_pipeline_open, - .close = fimc_pipeline_close, - .set_stream = fimc_pipeline_s_stream, + .open = __fimc_pipeline_open, + .close = __fimc_pipeline_close, + .set_stream = __fimc_pipeline_s_stream, }; /* @@ -269,7 +243,7 @@ static struct v4l2_subdev *fimc_md_register_sensor(struct fimc_md *fmd, return ERR_PTR(-EPROBE_DEFER); } v4l2_set_subdev_hostdata(sd, s_info); - sd->grp_id = SENSOR_GROUP_ID; + sd->grp_id = GRP_ID_SENSOR; v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice %s\n", s_info->pdata.board_info->type); @@ -316,7 +290,7 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd) for (i = 0; i < num_clients; i++) { struct v4l2_subdev *sd; - fmd->sensor[i].pdata = pdata->isp_info[i]; + fmd->sensor[i].pdata = pdata->source_info[i]; ret = __fimc_md_set_camclk(fmd, &fmd->sensor[i], true); if (ret) break; @@ -338,138 +312,149 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd) } /* - * MIPI CSIS and FIMC platform devices registration. + * MIPI-CSIS, FIMC and FIMC-LITE platform devices registration. */ -static int fimc_register_callback(struct device *dev, void *p) + +static int register_fimc_lite_entity(struct fimc_md *fmd, + struct fimc_lite *fimc_lite) { - struct fimc_dev *fimc = dev_get_drvdata(dev); struct v4l2_subdev *sd; - struct fimc_md *fmd = p; int ret; - if (fimc == NULL || fimc->id >= FIMC_MAX_DEVS) - return 0; + if (WARN_ON(fimc_lite->index >= FIMC_LITE_MAX_DEVS || + fmd->fimc_lite[fimc_lite->index])) + return -EBUSY; - sd = &fimc->vid_cap.subdev; - sd->grp_id = FIMC_GROUP_ID; + sd = &fimc_lite->subdev; + sd->grp_id = GRP_ID_FLITE; v4l2_set_subdev_hostdata(sd, (void *)&fimc_pipeline_ops); 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; - } - - fmd->fimc[fimc->id] = fimc; - return 0; + if (!ret) + fmd->fimc_lite[fimc_lite->index] = fimc_lite; + else + v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.LITE%d\n", + fimc_lite->index); + return ret; } -static int fimc_lite_register_callback(struct device *dev, void *p) +static int register_fimc_entity(struct fimc_md *fmd, struct fimc_dev *fimc) { - struct fimc_lite *fimc = dev_get_drvdata(dev); - struct fimc_md *fmd = p; + struct v4l2_subdev *sd; int ret; - if (fimc == NULL || fimc->index >= FIMC_LITE_MAX_DEVS) - return 0; + if (WARN_ON(fimc->id >= FIMC_MAX_DEVS || fmd->fimc[fimc->id])) + return -EBUSY; - fimc->subdev.grp_id = FLITE_GROUP_ID; - v4l2_set_subdev_hostdata(&fimc->subdev, (void *)&fimc_pipeline_ops); + sd = &fimc->vid_cap.subdev; + sd->grp_id = GRP_ID_FIMC; + v4l2_set_subdev_hostdata(sd, (void *)&fimc_pipeline_ops); - ret = v4l2_device_register_subdev(&fmd->v4l2_dev, &fimc->subdev); - if (ret) { - v4l2_err(&fmd->v4l2_dev, - "Failed to register FIMC-LITE.%d (%d)\n", - fimc->index, ret); - return ret; + ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); + if (!ret) { + fmd->fimc[fimc->id] = fimc; + fimc->vid_cap.user_subdev_api = fmd->user_subdev_api; + } else { + v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n", + fimc->id, ret); } - - fmd->fimc_lite[fimc->index] = fimc; - return 0; + return ret; } -static int csis_register_callback(struct device *dev, void *p) +static int register_csis_entity(struct fimc_md *fmd, + struct platform_device *pdev, + struct v4l2_subdev *sd) { - struct v4l2_subdev *sd = dev_get_drvdata(dev); - struct platform_device *pdev; - struct fimc_md *fmd = p; + struct device_node *node = pdev->dev.of_node; int id, ret; - if (!sd) - return 0; - pdev = v4l2_get_subdevdata(sd); - if (!pdev || pdev->id < 0 || pdev->id >= CSIS_MAX_ENTITIES) - return 0; - v4l2_info(sd, "csis%d sd: %s\n", pdev->id, sd->name); + id = node ? of_alias_get_id(node, "csis") : max(0, pdev->id); + + if (WARN_ON(id >= CSIS_MAX_ENTITIES || fmd->csis[id].sd)) + return -EBUSY; - id = pdev->id < 0 ? 0 : pdev->id; - sd->grp_id = CSIS_GROUP_ID; + if (WARN_ON(id >= CSIS_MAX_ENTITIES)) + return 0; + sd->grp_id = GRP_ID_CSIS; ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); if (!ret) fmd->csis[id].sd = sd; else v4l2_err(&fmd->v4l2_dev, - "Failed to register CSIS subdevice: %d\n", ret); + "Failed to register MIPI-CSIS.%d (%d)\n", id, ret); return ret; } -/** - * fimc_md_register_platform_entities - register FIMC and CSIS media entities - */ -static int fimc_md_register_platform_entities(struct fimc_md *fmd) +static int fimc_md_register_platform_entity(struct fimc_md *fmd, + struct platform_device *pdev, + int plat_entity) { - struct s5p_platform_fimc *pdata = fmd->pdev->dev.platform_data; - struct device_driver *driver; - int ret, i; - - driver = driver_find(FIMC_MODULE_NAME, &platform_bus_type); - if (!driver) { - v4l2_warn(&fmd->v4l2_dev, - "%s driver not found, deffering probe\n", - FIMC_MODULE_NAME); - return -EPROBE_DEFER; - } - - ret = driver_for_each_device(driver, NULL, fmd, - fimc_register_callback); - if (ret) - return ret; - - driver = driver_find(FIMC_LITE_DRV_NAME, &platform_bus_type); - if (driver && try_module_get(driver->owner)) { - ret = driver_for_each_device(driver, NULL, fmd, - fimc_lite_register_callback); - if (ret) - return ret; - module_put(driver->owner); - } - /* - * Check if there is any sensor on the MIPI-CSI2 bus and - * if not skip the s5p-csis module loading. - */ - if (pdata == NULL) - return 0; - for (i = 0; i < pdata->num_clients; i++) { - if (pdata->isp_info[i].bus_type == FIMC_MIPI_CSI2) { - ret = 1; + struct device *dev = &pdev->dev; + int ret = -EPROBE_DEFER; + void *drvdata; + + /* Lock to ensure dev->driver won't change. */ + device_lock(dev); + + if (!dev->driver || !try_module_get(dev->driver->owner)) + goto dev_unlock; + + drvdata = dev_get_drvdata(dev); + /* Some subdev didn't probe succesfully id drvdata is NULL */ + if (drvdata) { + switch (plat_entity) { + case IDX_FIMC: + ret = register_fimc_entity(fmd, drvdata); break; + case IDX_FLITE: + ret = register_fimc_lite_entity(fmd, drvdata); + break; + case IDX_CSIS: + ret = register_csis_entity(fmd, pdev, drvdata); + break; + default: + ret = -ENODEV; } } - if (!ret) - return 0; - driver = driver_find(CSIS_DRIVER_NAME, &platform_bus_type); - if (!driver || !try_module_get(driver->owner)) { - v4l2_warn(&fmd->v4l2_dev, - "%s driver not found, deffering probe\n", - CSIS_DRIVER_NAME); - return -EPROBE_DEFER; + module_put(dev->driver->owner); +dev_unlock: + device_unlock(dev); + if (ret == -EPROBE_DEFER) + dev_info(&fmd->pdev->dev, "deferring %s device registration\n", + dev_name(dev)); + else if (ret < 0) + dev_err(&fmd->pdev->dev, "%s device registration failed (%d)\n", + dev_name(dev), ret); + return ret; +} + +static int fimc_md_pdev_match(struct device *dev, void *data) +{ + struct platform_device *pdev = to_platform_device(dev); + int plat_entity = -1; + int ret; + char *p; + + if (!get_device(dev)) + return -ENODEV; + + if (!strcmp(pdev->name, CSIS_DRIVER_NAME)) { + plat_entity = IDX_CSIS; + } else if (!strcmp(pdev->name, FIMC_LITE_DRV_NAME)) { + plat_entity = IDX_FLITE; + } else { + p = strstr(pdev->name, "fimc"); + if (p && *(p + 4) == 0) + plat_entity = IDX_FIMC; } - return driver_for_each_device(driver, NULL, fmd, - csis_register_callback); + if (plat_entity >= 0) + ret = fimc_md_register_platform_entity(data, pdev, + plat_entity); + put_device(dev); + return 0; } static void fimc_md_unregister_entities(struct fimc_md *fmd) @@ -487,7 +472,7 @@ static void fimc_md_unregister_entities(struct fimc_md *fmd) if (fmd->fimc_lite[i] == NULL) continue; v4l2_device_unregister_subdev(&fmd->fimc_lite[i]->subdev); - fmd->fimc[i]->pipeline_ops = NULL; + fmd->fimc_lite[i]->pipeline_ops = NULL; fmd->fimc_lite[i] = NULL; } for (i = 0; i < CSIS_MAX_ENTITIES; i++) { @@ -503,6 +488,7 @@ static void fimc_md_unregister_entities(struct fimc_md *fmd) fimc_md_unregister_sensor(fmd->sensor[i].subdev); fmd->sensor[i].subdev = NULL; } + v4l2_info(&fmd->v4l2_dev, "Unregistered all entities\n"); } /** @@ -518,7 +504,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, struct v4l2_subdev *sensor, int pad, int link_mask) { - struct fimc_sensor_info *s_info; + struct fimc_sensor_info *s_info = NULL; struct media_entity *sink; unsigned int flags = 0; int ret, i; @@ -582,7 +568,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, if (ret) break; - v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]", + v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n", source->name, flags ? '=' : '-', sink->name); } return 0; @@ -602,7 +588,7 @@ static int __fimc_md_create_flite_source_links(struct fimc_md *fmd) source = &fimc->subdev.entity; sink = &fimc->vfd.entity; /* FIMC-LITE's subdev and video node */ - ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, + ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA, sink, 0, flags); if (ret) break; @@ -626,9 +612,9 @@ static int __fimc_md_create_flite_source_links(struct fimc_md *fmd) */ static int fimc_md_create_links(struct fimc_md *fmd) { - struct v4l2_subdev *csi_sensors[2] = { NULL }; + struct v4l2_subdev *csi_sensors[CSIS_MAX_ENTITIES] = { NULL }; struct v4l2_subdev *sensor, *csis; - struct s5p_fimc_isp_info *pdata; + struct fimc_source_info *pdata; struct fimc_sensor_info *s_info; struct media_entity *source, *sink; int i, pad, fimc_id = 0, ret = 0; @@ -646,8 +632,8 @@ static int fimc_md_create_links(struct fimc_md *fmd) source = NULL; pdata = &s_info->pdata; - switch (pdata->bus_type) { - case FIMC_MIPI_CSI2: + switch (pdata->sensor_bus_type) { + case FIMC_BUS_TYPE_MIPI_CSI2: if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES, "Wrong CSI channel id: %d\n", pdata->mux_id)) return -EINVAL; @@ -658,28 +644,29 @@ static int fimc_md_create_links(struct fimc_md *fmd) "but s5p-csis module is not loaded!\n")) return -EINVAL; - ret = media_entity_create_link(&sensor->entity, 0, + pad = sensor->entity.num_pads - 1; + ret = media_entity_create_link(&sensor->entity, pad, &csis->entity, CSIS_PAD_SINK, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); if (ret) return ret; - v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]", + v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]\n", sensor->entity.name, csis->entity.name); source = NULL; csi_sensors[pdata->mux_id] = sensor; break; - case FIMC_ITU_601...FIMC_ITU_656: + case FIMC_BUS_TYPE_ITU_601...FIMC_BUS_TYPE_ITU_656: source = &sensor->entity; pad = 0; break; default: v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n", - pdata->bus_type); + pdata->sensor_bus_type); return -EINVAL; } if (source == NULL) @@ -690,7 +677,7 @@ static int fimc_md_create_links(struct fimc_md *fmd) pad, link_mask); } - for (i = 0; i < ARRAY_SIZE(fmd->csis); i++) { + for (i = 0; i < CSIS_MAX_ENTITIES; i++) { if (fmd->csis[i].sd == NULL) continue; source = &fmd->csis[i].sd->entity; @@ -721,42 +708,61 @@ static int fimc_md_create_links(struct fimc_md *fmd) /* * The peripheral sensor clock management. */ +static void fimc_md_put_clocks(struct fimc_md *fmd) +{ + int i = FIMC_MAX_CAMCLKS; + + while (--i >= 0) { + if (IS_ERR(fmd->camclk[i].clock)) + continue; + clk_unprepare(fmd->camclk[i].clock); + clk_put(fmd->camclk[i].clock); + fmd->camclk[i].clock = ERR_PTR(-EINVAL); + } +} + static int fimc_md_get_clocks(struct fimc_md *fmd) { + struct device *dev = NULL; char clk_name[32]; struct clk *clock; - int i; + int ret, i; + + for (i = 0; i < FIMC_MAX_CAMCLKS; i++) + fmd->camclk[i].clock = ERR_PTR(-EINVAL); + + if (fmd->pdev->dev.of_node) + dev = &fmd->pdev->dev; for (i = 0; i < FIMC_MAX_CAMCLKS; i++) { snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i); - clock = clk_get(NULL, clk_name); - if (IS_ERR_OR_NULL(clock)) { - v4l2_err(&fmd->v4l2_dev, "Failed to get clock: %s", - clk_name); - return -ENXIO; + clock = clk_get(dev, clk_name); + + if (IS_ERR(clock)) { + dev_err(&fmd->pdev->dev, "Failed to get clock: %s\n", + clk_name); + ret = PTR_ERR(clock); + break; + } + ret = clk_prepare(clock); + if (ret < 0) { + clk_put(clock); + fmd->camclk[i].clock = ERR_PTR(-EINVAL); + break; } fmd->camclk[i].clock = clock; } - return 0; -} - -static void fimc_md_put_clocks(struct fimc_md *fmd) -{ - int i = FIMC_MAX_CAMCLKS; + if (ret) + fimc_md_put_clocks(fmd); - while (--i >= 0) { - if (IS_ERR_OR_NULL(fmd->camclk[i].clock)) - continue; - clk_put(fmd->camclk[i].clock); - fmd->camclk[i].clock = NULL; - } + return ret; } static int __fimc_md_set_camclk(struct fimc_md *fmd, struct fimc_sensor_info *s_info, bool on) { - struct s5p_fimc_isp_info *pdata = &s_info->pdata; + struct fimc_source_info *pdata = &s_info->pdata; struct fimc_camclk_info *camclk; int ret = 0; @@ -820,7 +826,9 @@ static int fimc_md_link_notify(struct media_pad *source, struct fimc_dev *fimc = NULL; struct fimc_pipeline *pipeline; struct v4l2_subdev *sd; + struct mutex *lock; int ret = 0; + int ref_count; if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) return 0; @@ -828,28 +836,33 @@ static int fimc_md_link_notify(struct media_pad *source, sd = media_entity_to_v4l2_subdev(sink->entity); switch (sd->grp_id) { - case FLITE_GROUP_ID: + case GRP_ID_FLITE: fimc_lite = v4l2_get_subdevdata(sd); + if (WARN_ON(fimc_lite == NULL)) + return 0; pipeline = &fimc_lite->pipeline; + lock = &fimc_lite->lock; break; - case FIMC_GROUP_ID: + case GRP_ID_FIMC: fimc = v4l2_get_subdevdata(sd); + if (WARN_ON(fimc == NULL)) + return 0; pipeline = &fimc->pipeline; + lock = &fimc->lock; break; default: return 0; } if (!(flags & MEDIA_LNK_FL_ENABLED)) { + int i; + mutex_lock(lock); ret = __fimc_pipeline_close(pipeline); - pipeline->subdevs[IDX_SENSOR] = NULL; - pipeline->subdevs[IDX_CSIS] = NULL; - - if (fimc) { - mutex_lock(&fimc->lock); + for (i = 0; i < IDX_MAX; i++) + pipeline->subdevs[i] = NULL; + if (fimc) fimc_ctrls_delete(fimc->vid_cap.ctx); - mutex_unlock(&fimc->lock); - } + mutex_unlock(lock); return ret; } /* @@ -857,23 +870,15 @@ static int fimc_md_link_notify(struct media_pad *source, * pipeline is already in use, i.e. its video node is opened. * Recreate the controls destroyed during the link deactivation. */ - if (fimc) { - mutex_lock(&fimc->lock); - if (fimc->vid_cap.refcnt > 0) { - ret = __fimc_pipeline_open(pipeline, - source->entity, true); - if (!ret) - ret = fimc_capture_ctrls_create(fimc); - } - mutex_unlock(&fimc->lock); - } else { - mutex_lock(&fimc_lite->lock); - if (fimc_lite->ref_count > 0) { - ret = __fimc_pipeline_open(pipeline, - source->entity, true); - } - mutex_unlock(&fimc_lite->lock); - } + mutex_lock(lock); + + ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count; + if (ref_count > 0) + ret = __fimc_pipeline_open(pipeline, source->entity, true); + if (!ret && fimc) + ret = fimc_capture_ctrls_create(fimc); + + mutex_unlock(lock); return ret ? -EPIPE : ret; } @@ -965,7 +970,8 @@ static int fimc_md_probe(struct platform_device *pdev) /* Protect the media graph while we're registering entities */ mutex_lock(&fmd->media_dev.graph_mutex); - ret = fimc_md_register_platform_entities(fmd); + ret = bus_for_each_dev(&platform_bus_type, NULL, fmd, + fimc_md_pdev_match); if (ret) goto err_unlock; |