| /* |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| * Authors: |
| * Inki Dae <inki.dae@samsung.com> |
| * Joonyoung Shim <jy0922.shim@samsung.com> |
| * Seung-Woo Kim <sw0312.kim@samsung.com> |
| * |
| * 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 <linux/pm_runtime.h> |
| #include <drm/drmP.h> |
| #include <drm/drm_atomic.h> |
| #include <drm/drm_atomic_helper.h> |
| #include <drm/drm_crtc_helper.h> |
| #include <drm/drm_fb_helper.h> |
| |
| #include <linux/component.h> |
| |
| #include <drm/exynos_drm.h> |
| |
| #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_ipp.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 "20180330" |
| |
| /* |
| * Interface history: |
| * |
| * 1.0 - Original version |
| * 1.1 - Upgrade IPP driver to version 2.0 |
| */ |
| #define DRIVER_MAJOR 1 |
| #define DRIVER_MINOR 1 |
| |
| 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), |
| DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES, |
| exynos_drm_ipp_get_res_ioctl, |
| DRM_AUTH | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl, |
| DRM_AUTH | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS, |
| exynos_drm_ipp_get_limits_ioctl, |
| DRM_AUTH | DRM_RENDER_ALLOW), |
| DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_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 DRM_FIMC_DEVICE BIT(3) /* devices shared with V4L2 subsystem */ |
| |
| #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), |
| DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE, |
| }, { |
| DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR), |
| DRM_COMPONENT_DRIVER |
| }, { |
| DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER), |
| DRM_COMPONENT_DRIVER |
| }, { |
| DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC), |
| DRM_COMPONENT_DRIVER |
| }, { |
| &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); |
| |
| if (!(info->flags & DRM_FIMC_DEVICE) || |
| exynos_drm_check_fimc_device(d) == 0) |
| 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_put(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_put(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 <inki.dae@samsung.com>"); |
| MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>"); |
| MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>"); |
| MODULE_DESCRIPTION("Samsung SoC DRM Driver"); |
| MODULE_LICENSE("GPL"); |