/* * Copyright (c) 2011 Samsung Electronics Co., Ltd. * Authors: * Inki Dae * Joonyoung Shim * Seung-Woo Kim * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include #include #include #include #include #include #include #include #include "exynos_drm_drv.h" #include "exynos_drm_fbdev.h" #include "exynos_drm_fb.h" #include "exynos_drm_gem.h" #include "exynos_drm_plane.h" #include "exynos_drm_vidi.h" #include "exynos_drm_g2d.h" #include "exynos_drm_iommu.h" #define DRIVER_NAME "exynos" #define DRIVER_DESC "Samsung SoC DRM" #define DRIVER_DATE "20110530" #define DRIVER_MAJOR 1 #define DRIVER_MINOR 0 static int exynos_drm_open(struct drm_device *dev, struct drm_file *file) { struct drm_exynos_file_private *file_priv; int ret; file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); if (!file_priv) return -ENOMEM; file->driver_priv = file_priv; ret = exynos_drm_subdrv_open(dev, file); if (ret) goto err_file_priv_free; return ret; err_file_priv_free: kfree(file_priv); file->driver_priv = NULL; return ret; } static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) { exynos_drm_subdrv_close(dev, file); kfree(file->driver_priv); file->driver_priv = NULL; } static const struct vm_operations_struct exynos_drm_gem_vm_ops = { .fault = exynos_drm_gem_fault, .open = drm_gem_vm_open, .close = drm_gem_vm_close, }; static const struct drm_ioctl_desc exynos_ioctls[] = { DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, DRM_AUTH | DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl, DRM_AUTH | DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl, DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl, DRM_AUTH | DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl, DRM_AUTH | DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl, DRM_AUTH | DRM_RENDER_ALLOW), }; static const struct file_operations exynos_drm_driver_fops = { .owner = THIS_MODULE, .open = drm_open, .mmap = exynos_drm_gem_mmap, .poll = drm_poll, .read = drm_read, .unlocked_ioctl = drm_ioctl, .compat_ioctl = drm_compat_ioctl, .release = drm_release, }; static struct drm_driver exynos_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC | DRIVER_RENDER, .open = exynos_drm_open, .lastclose = drm_fb_helper_lastclose, .postclose = exynos_drm_postclose, .gem_free_object_unlocked = exynos_drm_gem_free_object, .gem_vm_ops = &exynos_drm_gem_vm_ops, .dumb_create = exynos_drm_gem_dumb_create, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = drm_gem_prime_export, .gem_prime_import = exynos_drm_gem_prime_import, .gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table, .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, .gem_prime_vmap = exynos_drm_gem_prime_vmap, .gem_prime_vunmap = exynos_drm_gem_prime_vunmap, .gem_prime_mmap = exynos_drm_gem_prime_mmap, .ioctls = exynos_ioctls, .num_ioctls = ARRAY_SIZE(exynos_ioctls), .fops = &exynos_drm_driver_fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = DRIVER_DATE, .major = DRIVER_MAJOR, .minor = DRIVER_MINOR, }; #ifdef CONFIG_PM_SLEEP static int exynos_drm_suspend(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); struct exynos_drm_private *private; if (pm_runtime_suspended(dev) || !drm_dev) return 0; private = drm_dev->dev_private; drm_kms_helper_poll_disable(drm_dev); exynos_drm_fbdev_suspend(drm_dev); private->suspend_state = drm_atomic_helper_suspend(drm_dev); if (IS_ERR(private->suspend_state)) { exynos_drm_fbdev_resume(drm_dev); drm_kms_helper_poll_enable(drm_dev); return PTR_ERR(private->suspend_state); } return 0; } static int exynos_drm_resume(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); struct exynos_drm_private *private; if (pm_runtime_suspended(dev) || !drm_dev) return 0; private = drm_dev->dev_private; drm_atomic_helper_resume(drm_dev, private->suspend_state); exynos_drm_fbdev_resume(drm_dev); drm_kms_helper_poll_enable(drm_dev); return 0; } #endif static const struct dev_pm_ops exynos_drm_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume) }; /* forward declaration */ static struct platform_driver exynos_drm_platform_driver; struct exynos_drm_driver_info { struct platform_driver *driver; unsigned int flags; }; #define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */ #define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */ #define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */ #define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL) /* * Connector drivers should not be placed before associated crtc drivers, * because connector requires pipe number of its crtc during initialization. */ static struct exynos_drm_driver_info exynos_drm_drivers[] = { { DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD), DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE }, { DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON), DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE }, { DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON), DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE }, { DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER), DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE }, { DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC), DRM_COMPONENT_DRIVER }, { DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP), DRM_COMPONENT_DRIVER }, { DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI), DRM_COMPONENT_DRIVER }, { DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI), DRM_COMPONENT_DRIVER }, { DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI), DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE }, { DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D), }, { DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC), }, { DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR), }, { DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), }, { &exynos_drm_platform_driver, DRM_VIRTUAL_DEVICE } }; static int compare_dev(struct device *dev, void *data) { return dev == (struct device *)data; } static struct component_match *exynos_drm_match_add(struct device *dev) { struct component_match *match = NULL; int i; for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; struct device *p = NULL, *d; if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER)) continue; while ((d = bus_find_device(&platform_bus_type, p, &info->driver->driver, (void *)platform_bus_type.match))) { put_device(p); component_match_add(dev, &match, compare_dev, d); p = d; } put_device(p); } return match ?: ERR_PTR(-ENODEV); } static struct device *exynos_drm_get_dma_device(void) { int i; for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; struct device *dev; if (!info->driver || !(info->flags & DRM_DMA_DEVICE)) continue; while ((dev = bus_find_device(&platform_bus_type, NULL, &info->driver->driver, (void *)platform_bus_type.match))) { put_device(dev); return dev; } } return NULL; } static int exynos_drm_bind(struct device *dev) { struct exynos_drm_private *private; struct drm_encoder *encoder; struct drm_device *drm; unsigned int clone_mask; int cnt, ret; drm = drm_dev_alloc(&exynos_drm_driver, dev); if (IS_ERR(drm)) return PTR_ERR(drm); private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); if (!private) { ret = -ENOMEM; goto err_free_drm; } init_waitqueue_head(&private->wait); spin_lock_init(&private->lock); dev_set_drvdata(dev, drm); drm->dev_private = (void *)private; /* the first real CRTC device is used for all dma mapping operations */ private->dma_dev = exynos_drm_get_dma_device(); if (!private->dma_dev) { DRM_ERROR("no device found for DMA mapping operations.\n"); ret = -ENODEV; goto err_free_private; } DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n", dev_name(private->dma_dev)); /* create common IOMMU mapping for all devices attached to Exynos DRM */ ret = drm_create_iommu_mapping(drm); if (ret < 0) { DRM_ERROR("failed to create iommu mapping.\n"); goto err_free_private; } drm_mode_config_init(drm); exynos_drm_mode_config_init(drm); /* setup possible_clones. */ cnt = 0; clone_mask = 0; list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) clone_mask |= (1 << (cnt++)); list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) encoder->possible_clones = clone_mask; /* Try to bind all sub drivers. */ ret = component_bind_all(drm->dev, drm); if (ret) goto err_mode_config_cleanup; ret = drm_vblank_init(drm, drm->mode_config.num_crtc); if (ret) goto err_unbind_all; /* Probe non kms sub drivers and virtual display driver. */ ret = exynos_drm_device_subdrv_probe(drm); if (ret) goto err_unbind_all; drm_mode_config_reset(drm); /* * enable drm irq mode. * - with irq_enabled = true, we can use the vblank feature. * * P.S. note that we wouldn't use drm irq handler but * just specific driver own one instead because * drm framework supports only one irq handler. */ drm->irq_enabled = true; /* init kms poll for handling hpd */ drm_kms_helper_poll_init(drm); ret = exynos_drm_fbdev_init(drm); if (ret) goto err_cleanup_poll; /* register the DRM device */ ret = drm_dev_register(drm, 0); if (ret < 0) goto err_cleanup_fbdev; return 0; err_cleanup_fbdev: exynos_drm_fbdev_fini(drm); err_cleanup_poll: drm_kms_helper_poll_fini(drm); exynos_drm_device_subdrv_remove(drm); err_unbind_all: component_unbind_all(drm->dev, drm); err_mode_config_cleanup: drm_mode_config_cleanup(drm); drm_release_iommu_mapping(drm); err_free_private: kfree(private); err_free_drm: drm_dev_unref(drm); return ret; } static void exynos_drm_unbind(struct device *dev) { struct drm_device *drm = dev_get_drvdata(dev); drm_dev_unregister(drm); exynos_drm_device_subdrv_remove(drm); exynos_drm_fbdev_fini(drm); drm_kms_helper_poll_fini(drm); component_unbind_all(drm->dev, drm); drm_mode_config_cleanup(drm); drm_release_iommu_mapping(drm); kfree(drm->dev_private); drm->dev_private = NULL; dev_set_drvdata(dev, NULL); drm_dev_unref(drm); } static const struct component_master_ops exynos_drm_ops = { .bind = exynos_drm_bind, .unbind = exynos_drm_unbind, }; static int exynos_drm_platform_probe(struct platform_device *pdev) { struct component_match *match; pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); match = exynos_drm_match_add(&pdev->dev); if (IS_ERR(match)) return PTR_ERR(match); return component_master_add_with_match(&pdev->dev, &exynos_drm_ops, match); } static int exynos_drm_platform_remove(struct platform_device *pdev) { component_master_del(&pdev->dev, &exynos_drm_ops); return 0; } static struct platform_driver exynos_drm_platform_driver = { .probe = exynos_drm_platform_probe, .remove = exynos_drm_platform_remove, .driver = { .name = "exynos-drm", .pm = &exynos_drm_pm_ops, }, }; static void exynos_drm_unregister_devices(void) { int i; for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; struct device *dev; if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) continue; while ((dev = bus_find_device(&platform_bus_type, NULL, &info->driver->driver, (void *)platform_bus_type.match))) { put_device(dev); platform_device_unregister(to_platform_device(dev)); } } } static int exynos_drm_register_devices(void) { struct platform_device *pdev; int i; for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE)) continue; pdev = platform_device_register_simple( info->driver->driver.name, -1, NULL, 0); if (IS_ERR(pdev)) goto fail; } return 0; fail: exynos_drm_unregister_devices(); return PTR_ERR(pdev); } static void exynos_drm_unregister_drivers(void) { int i; for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) { struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; if (!info->driver) continue; platform_driver_unregister(info->driver); } } static int exynos_drm_register_drivers(void) { int i, ret; for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) { struct exynos_drm_driver_info *info = &exynos_drm_drivers[i]; if (!info->driver) continue; ret = platform_driver_register(info->driver); if (ret) goto fail; } return 0; fail: exynos_drm_unregister_drivers(); return ret; } static int exynos_drm_init(void) { int ret; ret = exynos_drm_register_devices(); if (ret) return ret; ret = exynos_drm_register_drivers(); if (ret) goto err_unregister_pdevs; return 0; err_unregister_pdevs: exynos_drm_unregister_devices(); return ret; } static void exynos_drm_exit(void) { exynos_drm_unregister_drivers(); exynos_drm_unregister_devices(); } module_init(exynos_drm_init); module_exit(exynos_drm_exit); MODULE_AUTHOR("Inki Dae "); MODULE_AUTHOR("Joonyoung Shim "); MODULE_AUTHOR("Seung-Woo Kim "); MODULE_DESCRIPTION("Samsung SoC DRM Driver"); MODULE_LICENSE("GPL");