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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.4 * Authors:5 * Inki Dae <inki.dae@samsung.com>6 * Joonyoung Shim <jy0922.shim@samsung.com>7 * Seung-Woo Kim <sw0312.kim@samsung.com>8 */9 10#include <linux/component.h>11#include <linux/dma-mapping.h>12#include <linux/platform_device.h>13#include <linux/pm_runtime.h>14#include <linux/uaccess.h>15 16#include <drm/drm_atomic.h>17#include <drm/drm_atomic_helper.h>18#include <drm/drm_drv.h>19#include <drm/drm_file.h>20#include <drm/drm_fourcc.h>21#include <drm/drm_ioctl.h>22#include <drm/drm_probe_helper.h>23#include <drm/drm_vblank.h>24#include <drm/exynos_drm.h>25 26#include "exynos_drm_drv.h"27#include "exynos_drm_fb.h"28#include "exynos_drm_fbdev.h"29#include "exynos_drm_g2d.h"30#include "exynos_drm_gem.h"31#include "exynos_drm_ipp.h"32#include "exynos_drm_plane.h"33#include "exynos_drm_vidi.h"34 35#define DRIVER_NAME "exynos"36#define DRIVER_DESC "Samsung SoC DRM"37#define DRIVER_DATE "20180330"38 39/*40 * Interface history:41 *42 * 1.0 - Original version43 * 1.1 - Upgrade IPP driver to version 2.044 */45#define DRIVER_MAJOR 146#define DRIVER_MINOR 147 48static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)49{50 struct drm_exynos_file_private *file_priv;51 int ret;52 53 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);54 if (!file_priv)55 return -ENOMEM;56 57 file->driver_priv = file_priv;58 ret = g2d_open(dev, file);59 if (ret)60 goto err_file_priv_free;61 62 return ret;63 64err_file_priv_free:65 kfree(file_priv);66 file->driver_priv = NULL;67 return ret;68}69 70static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)71{72 g2d_close(dev, file);73 kfree(file->driver_priv);74 file->driver_priv = NULL;75}76 77static const struct drm_ioctl_desc exynos_ioctls[] = {78 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,79 DRM_RENDER_ALLOW),80 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,81 DRM_RENDER_ALLOW),82 DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,83 DRM_RENDER_ALLOW),84 DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,85 DRM_AUTH),86 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,87 DRM_RENDER_ALLOW),88 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,89 DRM_RENDER_ALLOW),90 DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,91 DRM_RENDER_ALLOW),92 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,93 exynos_drm_ipp_get_res_ioctl,94 DRM_RENDER_ALLOW),95 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,96 DRM_RENDER_ALLOW),97 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,98 exynos_drm_ipp_get_limits_ioctl,99 DRM_RENDER_ALLOW),100 DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,101 DRM_RENDER_ALLOW),102};103 104DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);105 106static const struct drm_driver exynos_drm_driver = {107 .driver_features = DRIVER_MODESET | DRIVER_GEM108 | DRIVER_ATOMIC | DRIVER_RENDER,109 .open = exynos_drm_open,110 .postclose = exynos_drm_postclose,111 .dumb_create = exynos_drm_gem_dumb_create,112 .gem_prime_import = exynos_drm_gem_prime_import,113 .gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,114 .ioctls = exynos_ioctls,115 .num_ioctls = ARRAY_SIZE(exynos_ioctls),116 .fops = &exynos_drm_driver_fops,117 .name = DRIVER_NAME,118 .desc = DRIVER_DESC,119 .date = DRIVER_DATE,120 .major = DRIVER_MAJOR,121 .minor = DRIVER_MINOR,122};123 124static int exynos_drm_suspend(struct device *dev)125{126 struct drm_device *drm_dev = dev_get_drvdata(dev);127 128 return drm_mode_config_helper_suspend(drm_dev);129}130 131static void exynos_drm_resume(struct device *dev)132{133 struct drm_device *drm_dev = dev_get_drvdata(dev);134 135 drm_mode_config_helper_resume(drm_dev);136}137 138static const struct dev_pm_ops exynos_drm_pm_ops = {139 .prepare = exynos_drm_suspend,140 .complete = exynos_drm_resume,141};142 143/* forward declaration */144static struct platform_driver exynos_drm_platform_driver;145 146struct exynos_drm_driver_info {147 struct platform_driver *driver;148 unsigned int flags;149};150 151#define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */152#define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */153#define DRM_FIMC_DEVICE BIT(2) /* devices shared with V4L2 subsystem */154 155#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)156 157/*158 * Connector drivers should not be placed before associated crtc drivers,159 * because connector requires pipe number of its crtc during initialization.160 */161static struct exynos_drm_driver_info exynos_drm_drivers[] = {162 {163 DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),164 DRM_COMPONENT_DRIVER165 }, {166 DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),167 DRM_COMPONENT_DRIVER168 }, {169 DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),170 DRM_COMPONENT_DRIVER171 }, {172 DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),173 DRM_COMPONENT_DRIVER174 }, {175 DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),176 DRM_COMPONENT_DRIVER177 }, {178 DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),179 DRM_COMPONENT_DRIVER180 }, {181 DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),182 DRM_COMPONENT_DRIVER183 }, {184 DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),185 DRM_COMPONENT_DRIVER186 }, {187 DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),188 DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE189 }, {190 DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),191 DRM_COMPONENT_DRIVER192 }, {193 DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),194 DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,195 }, {196 DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),197 DRM_COMPONENT_DRIVER198 }, {199 DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),200 DRM_COMPONENT_DRIVER201 }, {202 DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),203 DRM_COMPONENT_DRIVER204 }, {205 &exynos_drm_platform_driver,206 DRM_VIRTUAL_DEVICE207 }208};209 210static struct component_match *exynos_drm_match_add(struct device *dev)211{212 struct component_match *match = NULL;213 int i;214 215 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {216 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];217 struct device *p = NULL, *d;218 219 if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))220 continue;221 222 while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {223 put_device(p);224 225 if (!(info->flags & DRM_FIMC_DEVICE) ||226 exynos_drm_check_fimc_device(d) == 0)227 component_match_add(dev, &match, component_compare_dev, d);228 p = d;229 }230 put_device(p);231 }232 233 return match ?: ERR_PTR(-ENODEV);234}235 236static int exynos_drm_bind(struct device *dev)237{238 struct exynos_drm_private *private;239 struct drm_encoder *encoder;240 struct drm_device *drm;241 unsigned int clone_mask;242 int ret;243 244 drm = drm_dev_alloc(&exynos_drm_driver, dev);245 if (IS_ERR(drm))246 return PTR_ERR(drm);247 248 private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);249 if (!private) {250 ret = -ENOMEM;251 goto err_free_drm;252 }253 254 init_waitqueue_head(&private->wait);255 spin_lock_init(&private->lock);256 257 dev_set_drvdata(dev, drm);258 drm->dev_private = (void *)private;259 260 drm_mode_config_init(drm);261 262 exynos_drm_mode_config_init(drm);263 264 /* setup possible_clones. */265 clone_mask = 0;266 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)267 clone_mask |= drm_encoder_mask(encoder);268 269 list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)270 encoder->possible_clones = clone_mask;271 272 /* Try to bind all sub drivers. */273 ret = component_bind_all(drm->dev, drm);274 if (ret)275 goto err_mode_config_cleanup;276 277 ret = drm_vblank_init(drm, drm->mode_config.num_crtc);278 if (ret)279 goto err_unbind_all;280 281 drm_mode_config_reset(drm);282 283 /* init kms poll for handling hpd */284 drm_kms_helper_poll_init(drm);285 286 /* register the DRM device */287 ret = drm_dev_register(drm, 0);288 if (ret < 0)289 goto err_cleanup_poll;290 291 exynos_drm_fbdev_setup(drm);292 293 return 0;294 295err_cleanup_poll:296 drm_kms_helper_poll_fini(drm);297err_unbind_all:298 component_unbind_all(drm->dev, drm);299err_mode_config_cleanup:300 drm_mode_config_cleanup(drm);301 exynos_drm_cleanup_dma(drm);302 kfree(private);303 dev_set_drvdata(dev, NULL);304err_free_drm:305 drm_dev_put(drm);306 307 return ret;308}309 310static void exynos_drm_unbind(struct device *dev)311{312 struct drm_device *drm = dev_get_drvdata(dev);313 314 drm_dev_unregister(drm);315 316 drm_kms_helper_poll_fini(drm);317 drm_atomic_helper_shutdown(drm);318 319 component_unbind_all(drm->dev, drm);320 drm_mode_config_cleanup(drm);321 exynos_drm_cleanup_dma(drm);322 323 kfree(drm->dev_private);324 drm->dev_private = NULL;325 dev_set_drvdata(dev, NULL);326 327 drm_dev_put(drm);328}329 330static const struct component_master_ops exynos_drm_ops = {331 .bind = exynos_drm_bind,332 .unbind = exynos_drm_unbind,333};334 335static int exynos_drm_platform_probe(struct platform_device *pdev)336{337 struct component_match *match;338 339 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);340 341 match = exynos_drm_match_add(&pdev->dev);342 if (IS_ERR(match))343 return PTR_ERR(match);344 345 return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,346 match);347}348 349static void exynos_drm_platform_remove(struct platform_device *pdev)350{351 component_master_del(&pdev->dev, &exynos_drm_ops);352}353 354static void exynos_drm_platform_shutdown(struct platform_device *pdev)355{356 struct drm_device *drm = platform_get_drvdata(pdev);357 358 if (drm)359 drm_atomic_helper_shutdown(drm);360}361 362static struct platform_driver exynos_drm_platform_driver = {363 .probe = exynos_drm_platform_probe,364 .remove_new = exynos_drm_platform_remove,365 .shutdown = exynos_drm_platform_shutdown,366 .driver = {367 .name = "exynos-drm",368 .pm = &exynos_drm_pm_ops,369 },370};371 372static void exynos_drm_unregister_devices(void)373{374 int i;375 376 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {377 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];378 struct device *dev;379 380 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))381 continue;382 383 while ((dev = platform_find_device_by_driver(NULL,384 &info->driver->driver))) {385 put_device(dev);386 platform_device_unregister(to_platform_device(dev));387 }388 }389}390 391static int exynos_drm_register_devices(void)392{393 struct platform_device *pdev;394 int i;395 396 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {397 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];398 399 if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))400 continue;401 402 pdev = platform_device_register_simple(403 info->driver->driver.name, -1, NULL, 0);404 if (IS_ERR(pdev))405 goto fail;406 }407 408 return 0;409fail:410 exynos_drm_unregister_devices();411 return PTR_ERR(pdev);412}413 414static void exynos_drm_unregister_drivers(void)415{416 int i;417 418 for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {419 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];420 421 if (!info->driver)422 continue;423 424 platform_driver_unregister(info->driver);425 }426}427 428static int exynos_drm_register_drivers(void)429{430 int i, ret;431 432 for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {433 struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];434 435 if (!info->driver)436 continue;437 438 ret = platform_driver_register(info->driver);439 if (ret)440 goto fail;441 }442 return 0;443fail:444 exynos_drm_unregister_drivers();445 return ret;446}447 448static int exynos_drm_init(void)449{450 int ret;451 452 if (drm_firmware_drivers_only())453 return -ENODEV;454 455 ret = exynos_drm_register_devices();456 if (ret)457 return ret;458 459 ret = exynos_drm_register_drivers();460 if (ret)461 goto err_unregister_pdevs;462 463 return 0;464 465err_unregister_pdevs:466 exynos_drm_unregister_devices();467 468 return ret;469}470 471static void exynos_drm_exit(void)472{473 exynos_drm_unregister_drivers();474 exynos_drm_unregister_devices();475}476 477module_init(exynos_drm_init);478module_exit(exynos_drm_exit);479 480MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");481MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");482MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");483MODULE_DESCRIPTION("Samsung SoC DRM Driver");484MODULE_LICENSE("GPL");485