diff options
Diffstat (limited to 'drivers/media/platform/vimc/vimc-core.c')
-rw-r--r-- | drivers/media/platform/vimc/vimc-core.c | 93 |
1 files changed, 61 insertions, 32 deletions
diff --git a/drivers/media/platform/vimc/vimc-core.c b/drivers/media/platform/vimc/vimc-core.c index 97a272f3350a..339126e565dc 100644 --- a/drivers/media/platform/vimc/vimc-core.c +++ b/drivers/media/platform/vimc/vimc-core.c @@ -48,48 +48,51 @@ static struct vimc_ent_config ent_config[] = { { .name = "Sensor A", .add = vimc_sen_add, - .rm = vimc_sen_rm, + .release = vimc_sen_release, }, { .name = "Sensor B", .add = vimc_sen_add, - .rm = vimc_sen_rm, + .release = vimc_sen_release, }, { .name = "Debayer A", .add = vimc_deb_add, - .rm = vimc_deb_rm, + .release = vimc_deb_release, }, { .name = "Debayer B", .add = vimc_deb_add, - .rm = vimc_deb_rm, + .release = vimc_deb_release, }, { .name = "Raw Capture 0", .add = vimc_cap_add, - .rm = vimc_cap_rm, + .unregister = vimc_cap_unregister, + .release = vimc_cap_release, }, { .name = "Raw Capture 1", .add = vimc_cap_add, - .rm = vimc_cap_rm, + .unregister = vimc_cap_unregister, + .release = vimc_cap_release, }, { /* TODO: change this to vimc-input when it is implemented */ .name = "RGB/YUV Input", .add = vimc_sen_add, - .rm = vimc_sen_rm, + .release = vimc_sen_release, }, { .name = "Scaler", .add = vimc_sca_add, - .rm = vimc_sca_rm, + .release = vimc_sca_release, }, { .name = "RGB/YUV Capture", .add = vimc_cap_add, - .rm = vimc_cap_rm, + .unregister = vimc_cap_unregister, + .release = vimc_cap_release, }, }; @@ -162,12 +165,12 @@ static int vimc_add_subdevs(struct vimc_device *vimc) unsigned int i; for (i = 0; i < vimc->pipe_cfg->num_ents; i++) { - dev_dbg(&vimc->pdev.dev, "new entity for %s\n", + dev_dbg(vimc->mdev.dev, "new entity for %s\n", vimc->pipe_cfg->ents[i].name); vimc->ent_devs[i] = vimc->pipe_cfg->ents[i].add(vimc, vimc->pipe_cfg->ents[i].name); if (!vimc->ent_devs[i]) { - dev_err(&vimc->pdev.dev, "add new entity for %s\n", + dev_err(vimc->mdev.dev, "add new entity for %s\n", vimc->pipe_cfg->ents[i].name); return -EINVAL; } @@ -175,13 +178,33 @@ static int vimc_add_subdevs(struct vimc_device *vimc) return 0; } -static void vimc_rm_subdevs(struct vimc_device *vimc) +static void vimc_release_subdevs(struct vimc_device *vimc) { unsigned int i; for (i = 0; i < vimc->pipe_cfg->num_ents; i++) if (vimc->ent_devs[i]) - vimc->pipe_cfg->ents[i].rm(vimc, vimc->ent_devs[i]); + vimc->pipe_cfg->ents[i].release(vimc->ent_devs[i]); +} + +static void vimc_unregister_subdevs(struct vimc_device *vimc) +{ + unsigned int i; + + for (i = 0; i < vimc->pipe_cfg->num_ents; i++) + if (vimc->ent_devs[i] && vimc->pipe_cfg->ents[i].unregister) + vimc->pipe_cfg->ents[i].unregister(vimc->ent_devs[i]); +} + +static void vimc_v4l2_dev_release(struct v4l2_device *v4l2_dev) +{ + struct vimc_device *vimc = + container_of(v4l2_dev, struct vimc_device, v4l2_dev); + + vimc_release_subdevs(vimc); + media_device_cleanup(&vimc->mdev); + kfree(vimc->ent_devs); + kfree(vimc); } static int vimc_register_devices(struct vimc_device *vimc) @@ -195,7 +218,6 @@ static int vimc_register_devices(struct vimc_device *vimc) "v4l2 device register failed (err=%d)\n", ret); return ret; } - /* allocate ent_devs */ vimc->ent_devs = kcalloc(vimc->pipe_cfg->num_ents, sizeof(*vimc->ent_devs), GFP_KERNEL); @@ -236,9 +258,9 @@ static int vimc_register_devices(struct vimc_device *vimc) err_mdev_unregister: media_device_unregister(&vimc->mdev); - media_device_cleanup(&vimc->mdev); err_rm_subdevs: - vimc_rm_subdevs(vimc); + vimc_unregister_subdevs(vimc); + vimc_release_subdevs(vimc); kfree(vimc->ent_devs); err_v4l2_unregister: v4l2_device_unregister(&vimc->v4l2_dev); @@ -248,20 +270,23 @@ err_v4l2_unregister: static void vimc_unregister(struct vimc_device *vimc) { + vimc_unregister_subdevs(vimc); media_device_unregister(&vimc->mdev); - media_device_cleanup(&vimc->mdev); v4l2_device_unregister(&vimc->v4l2_dev); - kfree(vimc->ent_devs); } static int vimc_probe(struct platform_device *pdev) { - struct vimc_device *vimc = container_of(pdev, struct vimc_device, pdev); + struct vimc_device *vimc; int ret; dev_dbg(&pdev->dev, "probe"); - memset(&vimc->mdev, 0, sizeof(vimc->mdev)); + vimc = kzalloc(sizeof(*vimc), GFP_KERNEL); + if (!vimc) + return -ENOMEM; + + vimc->pipe_cfg = &pipe_cfg; /* Link the media device within the v4l2_device */ vimc->v4l2_dev.mdev = &vimc->mdev; @@ -277,20 +302,27 @@ static int vimc_probe(struct platform_device *pdev) ret = vimc_register_devices(vimc); if (ret) { media_device_cleanup(&vimc->mdev); + kfree(vimc); return ret; } + /* + * the release cb is set only after successful registration. + * if the registration fails, we release directly from probe + */ + vimc->v4l2_dev.release = vimc_v4l2_dev_release; + platform_set_drvdata(pdev, vimc); return 0; } static int vimc_remove(struct platform_device *pdev) { - struct vimc_device *vimc = container_of(pdev, struct vimc_device, pdev); + struct vimc_device *vimc = platform_get_drvdata(pdev); dev_dbg(&pdev->dev, "remove"); - vimc_rm_subdevs(vimc); vimc_unregister(vimc); + v4l2_device_put(&vimc->v4l2_dev); return 0; } @@ -299,12 +331,9 @@ static void vimc_dev_release(struct device *dev) { } -static struct vimc_device vimc_dev = { - .pipe_cfg = &pipe_cfg, - .pdev = { - .name = VIMC_PDEV_NAME, - .dev.release = vimc_dev_release, - } +static struct platform_device vimc_pdev = { + .name = VIMC_PDEV_NAME, + .dev.release = vimc_dev_release, }; static struct platform_driver vimc_pdrv = { @@ -319,16 +348,16 @@ static int __init vimc_init(void) { int ret; - ret = platform_device_register(&vimc_dev.pdev); + ret = platform_device_register(&vimc_pdev); if (ret) { - dev_err(&vimc_dev.pdev.dev, + dev_err(&vimc_pdev.dev, "platform device registration failed (err=%d)\n", ret); return ret; } ret = platform_driver_register(&vimc_pdrv); if (ret) { - dev_err(&vimc_dev.pdev.dev, + dev_err(&vimc_pdev.dev, "platform driver registration failed (err=%d)\n", ret); platform_driver_unregister(&vimc_pdrv); return ret; @@ -341,7 +370,7 @@ static void __exit vimc_exit(void) { platform_driver_unregister(&vimc_pdrv); - platform_device_unregister(&vimc_dev.pdev); + platform_device_unregister(&vimc_pdev); } module_init(vimc_init); |