/* * 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 "exynos_drm_drv.h" #include "exynos_drm_crtc.h" #include "exynos_drm_encoder.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_dmabuf.h" #include "exynos_drm_g2d.h" #include "exynos_drm_ipp.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 struct platform_device *exynos_drm_pdev; static DEFINE_MUTEX(drm_component_lock); static LIST_HEAD(drm_component_list); struct component_dev { struct list_head list; struct device *crtc_dev; struct device *conn_dev; enum exynos_drm_output_type out_type; unsigned int dev_type_flag; }; static int exynos_drm_load(struct drm_device *dev, unsigned long flags) { struct exynos_drm_private *private; int ret; int nr; private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); if (!private) return -ENOMEM; INIT_LIST_HEAD(&private->pageflip_event_list); dev_set_drvdata(dev->dev, dev); dev->dev_private = (void *)private; /* * create mapping to manage iommu table and set a pointer to iommu * mapping structure to iommu_mapping of private data. * also this iommu_mapping can be used to check if iommu is supported * or not. */ ret = drm_create_iommu_mapping(dev); if (ret < 0) { DRM_ERROR("failed to create iommu mapping.\n"); goto err_free_private; } drm_mode_config_init(dev); exynos_drm_mode_config_init(dev); for (nr = 0; nr < MAX_PLANE; nr++) { struct drm_plane *plane; unsigned long possible_crtcs = (1 << MAX_CRTC) - 1; plane = exynos_plane_init(dev, possible_crtcs, DRM_PLANE_TYPE_OVERLAY); if (!IS_ERR(plane)) continue; ret = PTR_ERR(plane); goto err_mode_config_cleanup; } /* setup possible_clones. */ exynos_drm_encoder_setup(dev); platform_set_drvdata(dev->platformdev, dev); /* Try to bind all sub drivers. */ ret = component_bind_all(dev->dev, dev); if (ret) goto err_mode_config_cleanup; ret = drm_vblank_init(dev, dev->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(dev); if (ret) goto err_cleanup_vblank; /* * 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. */ dev->irq_enabled = true; /* * with vblank_disable_allowed = true, vblank interrupt will be disabled * by drm timer once a current process gives up ownership of * vblank event.(after drm_vblank_put function is called) */ dev->vblank_disable_allowed = true; /* init kms poll for handling hpd */ drm_kms_helper_poll_init(dev); /* force connectors detection */ drm_helper_hpd_irq_event(dev); return 0; err_cleanup_vblank: drm_vblank_cleanup(dev); err_unbind_all: component_unbind_all(dev->dev, dev); err_mode_config_cleanup: drm_mode_config_cleanup(dev); drm_release_iommu_mapping(dev); err_free_private: kfree(private); return ret; } static int exynos_drm_unload(struct drm_device *dev) { exynos_drm_device_subdrv_remove(dev); exynos_drm_fbdev_fini(dev); drm_kms_helper_poll_fini(dev); drm_vblank_cleanup(dev); component_unbind_all(dev->dev, dev); drm_mode_config_cleanup(dev); drm_release_iommu_mapping(dev); kfree(dev->dev_private); dev->dev_private = NULL; return 0; } static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state) { struct drm_connector *connector; drm_modeset_lock_all(dev); list_for_each_entry(connector, &dev->mode_config.connector_list, head) { int old_dpms = connector->dpms; if (connector->funcs->dpms) connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); /* Set the old mode back to the connector for resume */ connector->dpms = old_dpms; } drm_modeset_unlock_all(dev); return 0; } static int exynos_drm_resume(struct drm_device *dev) { struct drm_connector *connector; drm_modeset_lock_all(dev); list_for_each_entry(connector, &dev->mode_config.connector_list, head) { if (connector->funcs->dpms) { int dpms = connector->dpms; connector->dpms = DRM_MODE_DPMS_OFF; connector->funcs->dpms(connector, dpms); } } drm_modeset_unlock_all(dev); return 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_preclose(struct drm_device *dev, struct drm_file *file) { exynos_drm_subdrv_close(dev, file); } static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) { struct exynos_drm_private *private = dev->dev_private; struct drm_pending_vblank_event *v, *vt; struct drm_pending_event *e, *et; unsigned long flags; if (!file->driver_priv) return; /* Release all events not unhandled by page flip handler. */ spin_lock_irqsave(&dev->event_lock, flags); list_for_each_entry_safe(v, vt, &private->pageflip_event_list, base.link) { if (v->base.file_priv == file) { list_del(&v->base.link); drm_vblank_put(dev, v->pipe); v->base.destroy(&v->base); } } /* Release all events handled by page flip handler but not freed. */ list_for_each_entry_safe(e, et, &file->event_list, link) { list_del(&e->link); e->destroy(e); } spin_unlock_irqrestore(&dev->event_lock, flags); kfree(file->driver_priv); file->driver_priv = NULL; } static void exynos_drm_lastclose(struct drm_device *dev) { exynos_drm_fbdev_restore_mode(dev); } 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_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), }; 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, #ifdef CONFIG_COMPAT .compat_ioctl = drm_compat_ioctl, #endif .release = drm_release, }; static struct drm_driver exynos_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, .load = exynos_drm_load, .unload = exynos_drm_unload, .suspend = exynos_drm_suspend, .resume = exynos_drm_resume, .open = exynos_drm_open, .preclose = exynos_drm_preclose, .lastclose = exynos_drm_lastclose, .postclose = exynos_drm_postclose, .set_busid = drm_platform_set_busid, .get_vblank_counter = drm_vblank_count, .enable_vblank = exynos_drm_crtc_enable_vblank, .disable_vblank = exynos_drm_crtc_disable_vblank, .gem_free_object = exynos_drm_gem_free_object, .gem_vm_ops = &exynos_drm_gem_vm_ops, .dumb_create = exynos_drm_gem_dumb_create, .dumb_map_offset = exynos_drm_gem_dumb_map_offset, .dumb_destroy = drm_gem_dumb_destroy, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = exynos_dmabuf_prime_export, .gem_prime_import = exynos_dmabuf_prime_import, .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_sys_suspend(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); pm_message_t message; if (pm_runtime_suspended(dev) || !drm_dev) return 0; message.event = PM_EVENT_SUSPEND; return exynos_drm_suspend(drm_dev, message); } static int exynos_drm_sys_resume(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); if (pm_runtime_suspended(dev) || !drm_dev) return 0; return exynos_drm_resume(drm_dev); } #endif static const struct dev_pm_ops exynos_drm_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume) }; int exynos_drm_component_add(struct device *dev, enum exynos_drm_device_type dev_type, enum exynos_drm_output_type out_type) { struct component_dev *cdev; if (dev_type != EXYNOS_DEVICE_TYPE_CRTC && dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) { DRM_ERROR("invalid device type.\n"); return -EINVAL; } mutex_lock(&drm_component_lock); /* * Make sure to check if there is a component which has two device * objects, for connector and for encoder/connector. * It should make sure that crtc and encoder/connector drivers are * ready before exynos drm core binds them. */ list_for_each_entry(cdev, &drm_component_list, list) { if (cdev->out_type == out_type) { /* * If crtc and encoder/connector device objects are * added already just return. */ if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC | EXYNOS_DEVICE_TYPE_CONNECTOR)) { mutex_unlock(&drm_component_lock); return 0; } if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) { cdev->crtc_dev = dev; cdev->dev_type_flag |= dev_type; } if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) { cdev->conn_dev = dev; cdev->dev_type_flag |= dev_type; } mutex_unlock(&drm_component_lock); return 0; } } mutex_unlock(&drm_component_lock); cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); if (!cdev) return -ENOMEM; if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) cdev->crtc_dev = dev; if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) cdev->conn_dev = dev; cdev->out_type = out_type; cdev->dev_type_flag = dev_type; mutex_lock(&drm_component_lock); list_add_tail(&cdev->list, &drm_component_list); mutex_unlock(&drm_component_lock); return 0; } void exynos_drm_component_del(struct device *dev, enum exynos_drm_device_type dev_type) { struct component_dev *cdev, *next; mutex_lock(&drm_component_lock); list_for_each_entry_safe(cdev, next, &drm_component_list, list) { if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) { if (cdev->crtc_dev == dev) { cdev->crtc_dev = NULL; cdev->dev_type_flag &= ~dev_type; } } if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) { if (cdev->conn_dev == dev) { cdev->conn_dev = NULL; cdev->dev_type_flag &= ~dev_type; } } /* * Release cdev object only in case that both of crtc and * encoder/connector device objects are NULL. */ if (!cdev->crtc_dev && !cdev->conn_dev) { list_del(&cdev->list); kfree(cdev); } } mutex_unlock(&drm_component_lock); } 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; struct component_dev *cdev; unsigned int attach_cnt = 0; mutex_lock(&drm_component_lock); /* Do not retry to probe if there is no any kms driver regitered. */ if (list_empty(&drm_component_list)) { mutex_unlock(&drm_component_lock); return ERR_PTR(-ENODEV); } list_for_each_entry(cdev, &drm_component_list, list) { /* * Add components to master only in case that crtc and * encoder/connector device objects exist. */ if (!cdev->crtc_dev || !cdev->conn_dev) continue; attach_cnt++; mutex_unlock(&drm_component_lock); /* * fimd and dpi modules have same device object so add * only crtc device object in this case. */ if (cdev->crtc_dev == cdev->conn_dev) { component_match_add(dev, &match, compare_dev, cdev->crtc_dev); goto out_lock; } /* * Do not chage below call order. * crtc device first should be added to master because * connector/encoder need pipe number of crtc when they * are created. */ component_match_add(dev, &match, compare_dev, cdev->crtc_dev); component_match_add(dev, &match, compare_dev, cdev->conn_dev); out_lock: mutex_lock(&drm_component_lock); } mutex_unlock(&drm_component_lock); return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER); } static int exynos_drm_bind(struct device *dev) { return drm_platform_init(&exynos_drm_driver, to_platform_device(dev)); } static void exynos_drm_unbind(struct device *dev) { drm_put_dev(dev_get_drvdata(dev)); } static const struct component_master_ops exynos_drm_ops = { .bind = exynos_drm_bind, .unbind = exynos_drm_unbind, }; static struct platform_driver *const exynos_drm_kms_drivers[] = { #ifdef CONFIG_DRM_EXYNOS_FIMD &fimd_driver, #endif #ifdef CONFIG_DRM_EXYNOS_DP &dp_driver, #endif #ifdef CONFIG_DRM_EXYNOS_DSI &dsi_driver, #endif #ifdef CONFIG_DRM_EXYNOS_HDMI &mixer_driver, &hdmi_driver, #endif }; static struct platform_driver *const exynos_drm_non_kms_drivers[] = { #ifdef CONFIG_DRM_EXYNOS_G2D &g2d_driver, #endif #ifdef CONFIG_DRM_EXYNOS_FIMC &fimc_driver, #endif #ifdef CONFIG_DRM_EXYNOS_ROTATOR &rotator_driver, #endif #ifdef CONFIG_DRM_EXYNOS_GSC &gsc_driver, #endif #ifdef CONFIG_DRM_EXYNOS_IPP &ipp_driver, #endif }; static int exynos_drm_platform_probe(struct platform_device *pdev) { struct component_match *match; pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls); 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 const char * const strings[] = { "samsung,exynos3", "samsung,exynos4", "samsung,exynos5", }; 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 int exynos_drm_init(void) { bool is_exynos = false; int ret, i, j; /* * Register device object only in case of Exynos SoC. * * Below codes resolves temporarily infinite loop issue incurred * by Exynos drm driver when using multi-platform kernel. * So these codes will be replaced with more generic way later. */ for (i = 0; i < ARRAY_SIZE(strings); i++) { if (of_machine_is_compatible(strings[i])) { is_exynos = true; break; } } if (!is_exynos) return -ENODEV; exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, NULL, 0); if (IS_ERR(exynos_drm_pdev)) return PTR_ERR(exynos_drm_pdev); ret = exynos_drm_probe_vidi(); if (ret < 0) goto err_unregister_pd; for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) { ret = platform_driver_register(exynos_drm_kms_drivers[i]); if (ret < 0) goto err_unregister_kms_drivers; } for (j = 0; j < ARRAY_SIZE(exynos_drm_non_kms_drivers); ++j) { ret = platform_driver_register(exynos_drm_non_kms_drivers[j]); if (ret < 0) goto err_unregister_non_kms_drivers; } #ifdef CONFIG_DRM_EXYNOS_IPP ret = exynos_platform_device_ipp_register(); if (ret < 0) goto err_unregister_non_kms_drivers; #endif ret = platform_driver_register(&exynos_drm_platform_driver); if (ret) goto err_unregister_resources; return 0; err_unregister_resources: #ifdef CONFIG_DRM_EXYNOS_IPP exynos_platform_device_ipp_unregister(); #endif err_unregister_non_kms_drivers: while (--j >= 0) platform_driver_unregister(exynos_drm_non_kms_drivers[j]); err_unregister_kms_drivers: while (--i >= 0) platform_driver_unregister(exynos_drm_kms_drivers[i]); exynos_drm_remove_vidi(); err_unregister_pd: platform_device_unregister(exynos_drm_pdev); return ret; } static void exynos_drm_exit(void) { int i; #ifdef CONFIG_DRM_EXYNOS_IPP exynos_platform_device_ipp_unregister(); #endif for (i = ARRAY_SIZE(exynos_drm_non_kms_drivers) - 1; i >= 0; --i) platform_driver_unregister(exynos_drm_non_kms_drivers[i]); for (i = ARRAY_SIZE(exynos_drm_kms_drivers) - 1; i >= 0; --i) platform_driver_unregister(exynos_drm_kms_drivers[i]); platform_driver_unregister(&exynos_drm_platform_driver); exynos_drm_remove_vidi(); platform_device_unregister(exynos_drm_pdev); } 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");