Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Biju Das | 612 | 100.00% | 1 | 100.00% |
Total | 612 | 1 |
// SPDX-License-Identifier: GPL-2.0+ /* * RZ/G2L Display Unit DRM driver * * Copyright (C) 2023 Renesas Electronics Corporation * * Based on rcar_du_drv.c */ #include <linux/dma-mapping.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_drv.h> #include <drm/drm_fbdev_generic.h> #include <drm/drm_gem_dma_helper.h> #include <drm/drm_probe_helper.h> #include "rzg2l_du_drv.h" #include "rzg2l_du_kms.h" /* ----------------------------------------------------------------------------- * Device Information */ static const struct rzg2l_du_device_info rzg2l_du_r9a07g044_info = { .channels_mask = BIT(0), .routes = { [RZG2L_DU_OUTPUT_DSI0] = { .possible_outputs = BIT(0), .port = 0, }, [RZG2L_DU_OUTPUT_DPAD0] = { .possible_outputs = BIT(0), .port = 1, } } }; static const struct of_device_id rzg2l_du_of_table[] = { { .compatible = "renesas,r9a07g044-du", .data = &rzg2l_du_r9a07g044_info }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, rzg2l_du_of_table); const char *rzg2l_du_output_name(enum rzg2l_du_output output) { static const char * const names[] = { [RZG2L_DU_OUTPUT_DSI0] = "DSI0", [RZG2L_DU_OUTPUT_DPAD0] = "DPAD0" }; if (output >= ARRAY_SIZE(names)) return "UNKNOWN"; return names[output]; } /* ----------------------------------------------------------------------------- * DRM operations */ DEFINE_DRM_GEM_DMA_FOPS(rzg2l_du_fops); static const struct drm_driver rzg2l_du_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, .dumb_create = rzg2l_du_dumb_create, .fops = &rzg2l_du_fops, .name = "rzg2l-du", .desc = "Renesas RZ/G2L Display Unit", .date = "20230410", .major = 1, .minor = 0, }; /* ----------------------------------------------------------------------------- * Platform driver */ static void rzg2l_du_remove(struct platform_device *pdev) { struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev); struct drm_device *ddev = &rcdu->ddev; drm_dev_unregister(ddev); drm_atomic_helper_shutdown(ddev); drm_kms_helper_poll_fini(ddev); } static void rzg2l_du_shutdown(struct platform_device *pdev) { struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev); drm_atomic_helper_shutdown(&rcdu->ddev); } static int rzg2l_du_probe(struct platform_device *pdev) { struct rzg2l_du_device *rcdu; int ret; if (drm_firmware_drivers_only()) return -ENODEV; /* Allocate and initialize the RZ/G2L device structure. */ rcdu = devm_drm_dev_alloc(&pdev->dev, &rzg2l_du_driver, struct rzg2l_du_device, ddev); if (IS_ERR(rcdu)) return PTR_ERR(rcdu); rcdu->dev = &pdev->dev; rcdu->info = of_device_get_match_data(rcdu->dev); platform_set_drvdata(pdev, rcdu); /* I/O resources */ rcdu->mmio = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(rcdu->mmio)) return PTR_ERR(rcdu->mmio); ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (ret) return ret; /* DRM/KMS objects */ ret = rzg2l_du_modeset_init(rcdu); if (ret < 0) { /* * Don't use dev_err_probe(), as it would overwrite the probe * deferral reason recorded in rzg2l_du_modeset_init(). */ if (ret != -EPROBE_DEFER) dev_err(&pdev->dev, "failed to initialize DRM/KMS (%d)\n", ret); goto error; } /* * Register the DRM device with the core and the connectors with * sysfs. */ ret = drm_dev_register(&rcdu->ddev, 0); if (ret) goto error; drm_info(&rcdu->ddev, "Device %s probed\n", dev_name(&pdev->dev)); drm_fbdev_generic_setup(&rcdu->ddev, 32); return 0; error: drm_kms_helper_poll_fini(&rcdu->ddev); return ret; } static struct platform_driver rzg2l_du_platform_driver = { .probe = rzg2l_du_probe, .remove_new = rzg2l_du_remove, .shutdown = rzg2l_du_shutdown, .driver = { .name = "rzg2l-du", .of_match_table = rzg2l_du_of_table, }, }; module_platform_driver(rzg2l_du_platform_driver); MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>"); MODULE_DESCRIPTION("Renesas RZ/G2L Display Unit DRM Driver"); MODULE_LICENSE("GPL");
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