// SPDX-License-Identifier: GPL-2.0-or-later /* * 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> */ #include <linux/component.h> #include <linux/dma-mapping.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/uaccess.h> #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_drv.h> #include <drm/drm_fb_helper.h> #include <drm/drm_file.h> #include <drm/drm_fourcc.h> #include <drm/drm_ioctl.h> #include <drm/drm_probe_helper.h> #include <drm/drm_vblank.h> #include <drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_fb.h" #include "exynos_drm_fbdev.h" #include "exynos_drm_g2d.h" #include "exynos_drm_gem.h" #include "exynos_drm_ipp.h" #include "exynos_drm_plane.h" #include "exynos_drm_vidi.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 = g2d_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) { g2d_close(dev, file); kfree(file->driver_priv); file->driver_priv = NULL; } static const struct drm_ioctl_desc exynos_ioctls[] = { DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl, 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_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES, exynos_drm_ipp_get_res_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS, exynos_drm_ipp_get_limits_ioctl, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl, 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 const struct drm_driver exynos_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC | DRIVER_RENDER, .open = exynos_drm_open, .lastclose = drm_fb_helper_lastclose, .postclose = exynos_drm_postclose, .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_import = exynos_drm_gem_prime_import, .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table, .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, }; static int exynos_drm_suspend(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); return drm_mode_config_helper_suspend(drm_dev); } static void exynos_drm_resume(struct device *dev) { struct drm_device *drm_dev = dev_get_drvdata(dev); drm_mode_config_helper_resume(drm_dev); } static const struct dev_pm_ops exynos_drm_pm_ops = { .prepare = exynos_drm_suspend, .complete = 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_FIMC_DEVICE BIT(2) /* 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 }, { DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON), DRM_COMPONENT_DRIVER }, { DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON), DRM_COMPONENT_DRIVER }, { DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER), DRM_COMPONENT_DRIVER }, { 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), DRM_COMPONENT_DRIVER }, { 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 = platform_find_device_by_driver(p, &info->driver->driver))) { 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 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 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; drm_mode_config_init(drm); exynos_drm_mode_config_init(drm); /* setup possible_clones. */ clone_mask = 0; list_for_each_entry(encoder, &drm->mode_config.encoder_list, head) clone_mask |= drm_encoder_mask(encoder); 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; drm_mode_config_reset(drm); /* 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); err_unbind_all: component_unbind_all(drm->dev, drm); err_mode_config_cleanup: drm_mode_config_cleanup(drm); exynos_drm_cleanup_dma(drm); 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_fbdev_fini(drm); drm_kms_helper_poll_fini(drm); component_unbind_all(drm->dev, drm); drm_mode_config_cleanup(drm); exynos_drm_cleanup_dma(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 = platform_find_device_by_driver(NULL, &info->driver->driver))) { 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");