static int rcar_du_probe(struct platform_device *pdev) { struct rcar_du_device *rcdu; struct drm_device *ddev; struct resource *mem; int ret; /* Allocate and initialize the R-Car device structure. */ rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL); if (rcdu == NULL) return -ENOMEM; rcdu->dev = &pdev->dev; rcdu->info = of_device_get_match_data(rcdu->dev); platform_set_drvdata(pdev, rcdu); /* I/O resources */ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(rcdu->mmio)) return PTR_ERR(rcdu->mmio); /* DRM/KMS objects */ ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev); if (IS_ERR(ddev)) return PTR_ERR(ddev); rcdu->ddev = ddev; ddev->dev_private = rcdu; ret = rcar_du_modeset_init(rcdu); if (ret < 0) { if (ret != -EPROBE_DEFER) dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret); goto error; } ddev->irq_enabled = 1; /* * Register the DRM device with the core and the connectors with * sysfs. */ ret = drm_dev_register(ddev, 0); if (ret) goto error; DRM_INFO("Device %s probed\n", dev_name(&pdev->dev)); drm_fbdev_generic_setup(ddev, 32); return 0; error: rcar_du_remove(pdev); return ret; }
static int rcar_du_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct rcar_du_device *rcdu; struct drm_device *ddev; struct resource *mem; int ret; if (np == NULL) { dev_err(&pdev->dev, "no device tree node\n"); return -ENODEV; } /* Allocate and initialize the DRM and R-Car device structures. */ rcdu = devm_kzalloc(&pdev->dev, sizeof(*rcdu), GFP_KERNEL); if (rcdu == NULL) return -ENOMEM; init_waitqueue_head(&rcdu->commit.wait); rcdu->dev = &pdev->dev; rcdu->info = of_match_device(rcar_du_of_table, rcdu->dev)->data; ddev = drm_dev_alloc(&rcar_du_driver, &pdev->dev); if (!ddev) return -ENOMEM; rcdu->ddev = ddev; ddev->dev_private = rcdu; platform_set_drvdata(pdev, rcdu); /* I/O resources */ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); rcdu->mmio = devm_ioremap_resource(&pdev->dev, mem); if (IS_ERR(rcdu->mmio)) { ret = PTR_ERR(rcdu->mmio); goto error; } /* Initialize vertical blanking interrupts handling. Start with vblank * disabled for all CRTCs. */ ret = drm_vblank_init(ddev, (1 << rcdu->info->num_crtcs) - 1); if (ret < 0) goto error; /* DRM/KMS objects */ ret = rcar_du_modeset_init(rcdu); if (ret < 0) { if (ret != -EPROBE_DEFER) dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret); goto error; } ddev->irq_enabled = 1; /* Register the DRM device with the core and the connectors with * sysfs. */ ret = drm_dev_register(ddev, 0); if (ret) goto error; DRM_INFO("Device %s probed\n", dev_name(&pdev->dev)); return 0; error: rcar_du_remove(pdev); return ret; }