1d76271d2SHyun Kwon // SPDX-License-Identifier: GPL-2.0 2d76271d2SHyun Kwon /* 3d76271d2SHyun Kwon * ZynqMP DisplayPort Subsystem Driver 4d76271d2SHyun Kwon * 5d76271d2SHyun Kwon * Copyright (C) 2017 - 2020 Xilinx, Inc. 6d76271d2SHyun Kwon * 7d76271d2SHyun Kwon * Authors: 8d76271d2SHyun Kwon * - Hyun Woo Kwon <hyun.kwon@xilinx.com> 9d76271d2SHyun Kwon * - Laurent Pinchart <laurent.pinchart@ideasonboard.com> 10d76271d2SHyun Kwon */ 11d76271d2SHyun Kwon 12d76271d2SHyun Kwon #include <linux/clk.h> 13d76271d2SHyun Kwon #include <linux/dma-mapping.h> 14d76271d2SHyun Kwon #include <linux/module.h> 15d76271d2SHyun Kwon #include <linux/of_reserved_mem.h> 16d76271d2SHyun Kwon #include <linux/platform_device.h> 17d76271d2SHyun Kwon #include <linux/pm_runtime.h> 18*6ca91bb4SLaurent Pinchart #include <linux/slab.h> 19d76271d2SHyun Kwon 20d76271d2SHyun Kwon #include <drm/drm_atomic_helper.h> 21cbb11ef9SLaurent Pinchart #include <drm/drm_bridge_connector.h> 22d76271d2SHyun Kwon #include <drm/drm_device.h> 23d76271d2SHyun Kwon #include <drm/drm_drv.h> 24d76271d2SHyun Kwon #include <drm/drm_fb_helper.h> 25d76271d2SHyun Kwon #include <drm/drm_fourcc.h> 264a83c26aSDanilo Krummrich #include <drm/drm_gem_dma_helper.h> 27d76271d2SHyun Kwon #include <drm/drm_gem_framebuffer_helper.h> 28d76271d2SHyun Kwon #include <drm/drm_managed.h> 29d76271d2SHyun Kwon #include <drm/drm_mode_config.h> 30fad54534SJavier Martinez Canillas #include <drm/drm_module.h> 31d76271d2SHyun Kwon #include <drm/drm_probe_helper.h> 32d76271d2SHyun Kwon #include <drm/drm_vblank.h> 33d76271d2SHyun Kwon 34d76271d2SHyun Kwon #include "zynqmp_disp.h" 35d76271d2SHyun Kwon #include "zynqmp_dp.h" 36d76271d2SHyun Kwon #include "zynqmp_dpsub.h" 3776c8eeb7SLaurent Pinchart #include "zynqmp_kms.h" 38d76271d2SHyun Kwon 39d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 40d76271d2SHyun Kwon * Dumb Buffer & Framebuffer Allocation 41d76271d2SHyun Kwon */ 42d76271d2SHyun Kwon 43d76271d2SHyun Kwon static int zynqmp_dpsub_dumb_create(struct drm_file *file_priv, 44d76271d2SHyun Kwon struct drm_device *drm, 45d76271d2SHyun Kwon struct drm_mode_create_dumb *args) 46d76271d2SHyun Kwon { 47d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm); 48d76271d2SHyun Kwon unsigned int pitch = DIV_ROUND_UP(args->width * args->bpp, 8); 49d76271d2SHyun Kwon 50d76271d2SHyun Kwon /* Enforce the alignment constraints of the DMA engine. */ 51d76271d2SHyun Kwon args->pitch = ALIGN(pitch, dpsub->dma_align); 52d76271d2SHyun Kwon 534a83c26aSDanilo Krummrich return drm_gem_dma_dumb_create_internal(file_priv, drm, args); 54d76271d2SHyun Kwon } 55d76271d2SHyun Kwon 56d76271d2SHyun Kwon static struct drm_framebuffer * 57d76271d2SHyun Kwon zynqmp_dpsub_fb_create(struct drm_device *drm, struct drm_file *file_priv, 58d76271d2SHyun Kwon const struct drm_mode_fb_cmd2 *mode_cmd) 59d76271d2SHyun Kwon { 60d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm); 61d76271d2SHyun Kwon struct drm_mode_fb_cmd2 cmd = *mode_cmd; 62d76271d2SHyun Kwon unsigned int i; 63d76271d2SHyun Kwon 64d76271d2SHyun Kwon /* Enforce the alignment constraints of the DMA engine. */ 65d76271d2SHyun Kwon for (i = 0; i < ARRAY_SIZE(cmd.pitches); ++i) 66d76271d2SHyun Kwon cmd.pitches[i] = ALIGN(cmd.pitches[i], dpsub->dma_align); 67d76271d2SHyun Kwon 68d76271d2SHyun Kwon return drm_gem_fb_create(drm, file_priv, &cmd); 69d76271d2SHyun Kwon } 70d76271d2SHyun Kwon 71d76271d2SHyun Kwon static const struct drm_mode_config_funcs zynqmp_dpsub_mode_config_funcs = { 72d76271d2SHyun Kwon .fb_create = zynqmp_dpsub_fb_create, 73d76271d2SHyun Kwon .atomic_check = drm_atomic_helper_check, 74d76271d2SHyun Kwon .atomic_commit = drm_atomic_helper_commit, 75d76271d2SHyun Kwon }; 76d76271d2SHyun Kwon 77d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 78d76271d2SHyun Kwon * DRM/KMS Driver 79d76271d2SHyun Kwon */ 80d76271d2SHyun Kwon 814a83c26aSDanilo Krummrich DEFINE_DRM_GEM_DMA_FOPS(zynqmp_dpsub_drm_fops); 82d76271d2SHyun Kwon 8370a59dd8SDaniel Vetter static const struct drm_driver zynqmp_dpsub_drm_driver = { 84d76271d2SHyun Kwon .driver_features = DRIVER_MODESET | DRIVER_GEM | 85d76271d2SHyun Kwon DRIVER_ATOMIC, 86d76271d2SHyun Kwon 874a83c26aSDanilo Krummrich DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(zynqmp_dpsub_dumb_create), 88d76271d2SHyun Kwon 89d76271d2SHyun Kwon .fops = &zynqmp_dpsub_drm_fops, 90d76271d2SHyun Kwon 91d76271d2SHyun Kwon .name = "zynqmp-dpsub", 92d76271d2SHyun Kwon .desc = "Xilinx DisplayPort Subsystem Driver", 93d76271d2SHyun Kwon .date = "20130509", 94d76271d2SHyun Kwon .major = 1, 95d76271d2SHyun Kwon .minor = 0, 96d76271d2SHyun Kwon }; 97d76271d2SHyun Kwon 98d76271d2SHyun Kwon static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub) 99d76271d2SHyun Kwon { 100d76271d2SHyun Kwon struct drm_device *drm = &dpsub->drm; 101d76271d2SHyun Kwon int ret; 102d76271d2SHyun Kwon 103d76271d2SHyun Kwon /* Initialize mode config, vblank and the KMS poll helper. */ 104d76271d2SHyun Kwon ret = drmm_mode_config_init(drm); 105d76271d2SHyun Kwon if (ret < 0) 106075342eaSDaniel Vetter return ret; 107d76271d2SHyun Kwon 108d76271d2SHyun Kwon drm->mode_config.funcs = &zynqmp_dpsub_mode_config_funcs; 109d76271d2SHyun Kwon drm->mode_config.min_width = 0; 110d76271d2SHyun Kwon drm->mode_config.min_height = 0; 111d76271d2SHyun Kwon drm->mode_config.max_width = ZYNQMP_DISP_MAX_WIDTH; 112d76271d2SHyun Kwon drm->mode_config.max_height = ZYNQMP_DISP_MAX_HEIGHT; 113d76271d2SHyun Kwon 114d76271d2SHyun Kwon ret = drm_vblank_init(drm, 1); 115d76271d2SHyun Kwon if (ret) 116075342eaSDaniel Vetter return ret; 117d76271d2SHyun Kwon 118d76271d2SHyun Kwon drm_kms_helper_poll_init(drm); 119d76271d2SHyun Kwon 12076c8eeb7SLaurent Pinchart ret = zynqmp_dpsub_kms_init(dpsub); 12176c8eeb7SLaurent Pinchart if (ret < 0) 122d76271d2SHyun Kwon goto err_poll_fini; 123d76271d2SHyun Kwon 124d76271d2SHyun Kwon /* Reset all components and register the DRM device. */ 125d76271d2SHyun Kwon drm_mode_config_reset(drm); 126d76271d2SHyun Kwon 127d76271d2SHyun Kwon ret = drm_dev_register(drm, 0); 128d76271d2SHyun Kwon if (ret < 0) 129d76271d2SHyun Kwon goto err_poll_fini; 130d76271d2SHyun Kwon 131d76271d2SHyun Kwon /* Initialize fbdev generic emulation. */ 132d76271d2SHyun Kwon drm_fbdev_generic_setup(drm, 24); 133d76271d2SHyun Kwon 134d76271d2SHyun Kwon return 0; 135d76271d2SHyun Kwon 136d76271d2SHyun Kwon err_poll_fini: 137d76271d2SHyun Kwon drm_kms_helper_poll_fini(drm); 138d76271d2SHyun Kwon return ret; 139d76271d2SHyun Kwon } 140d76271d2SHyun Kwon 141d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 142d76271d2SHyun Kwon * Power Management 143d76271d2SHyun Kwon */ 144d76271d2SHyun Kwon 145d76271d2SHyun Kwon static int __maybe_unused zynqmp_dpsub_suspend(struct device *dev) 146d76271d2SHyun Kwon { 147d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev); 148d76271d2SHyun Kwon 149d76271d2SHyun Kwon return drm_mode_config_helper_suspend(&dpsub->drm); 150d76271d2SHyun Kwon } 151d76271d2SHyun Kwon 152d76271d2SHyun Kwon static int __maybe_unused zynqmp_dpsub_resume(struct device *dev) 153d76271d2SHyun Kwon { 154d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev); 155d76271d2SHyun Kwon 156d76271d2SHyun Kwon return drm_mode_config_helper_resume(&dpsub->drm); 157d76271d2SHyun Kwon } 158d76271d2SHyun Kwon 159d76271d2SHyun Kwon static const struct dev_pm_ops zynqmp_dpsub_pm_ops = { 160d76271d2SHyun Kwon SET_SYSTEM_SLEEP_PM_OPS(zynqmp_dpsub_suspend, zynqmp_dpsub_resume) 161d76271d2SHyun Kwon }; 162d76271d2SHyun Kwon 163d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 164c979296eSLaurent Pinchart * DPSUB Configuration 165c979296eSLaurent Pinchart */ 166c979296eSLaurent Pinchart 167c979296eSLaurent Pinchart /** 168c979296eSLaurent Pinchart * zynqmp_dpsub_audio_enabled - If the audio is enabled 169c979296eSLaurent Pinchart * @dpsub: DisplayPort subsystem 170c979296eSLaurent Pinchart * 171c979296eSLaurent Pinchart * Return if the audio is enabled depending on the audio clock. 172c979296eSLaurent Pinchart * 173c979296eSLaurent Pinchart * Return: true if audio is enabled, or false. 174c979296eSLaurent Pinchart */ 175c979296eSLaurent Pinchart bool zynqmp_dpsub_audio_enabled(struct zynqmp_dpsub *dpsub) 176c979296eSLaurent Pinchart { 177c979296eSLaurent Pinchart return !!dpsub->aud_clk; 178c979296eSLaurent Pinchart } 179c979296eSLaurent Pinchart 180c979296eSLaurent Pinchart /** 181c979296eSLaurent Pinchart * zynqmp_dpsub_get_audio_clk_rate - Get the current audio clock rate 182c979296eSLaurent Pinchart * @dpsub: DisplayPort subsystem 183c979296eSLaurent Pinchart * 184c979296eSLaurent Pinchart * Return: the current audio clock rate. 185c979296eSLaurent Pinchart */ 186c979296eSLaurent Pinchart unsigned int zynqmp_dpsub_get_audio_clk_rate(struct zynqmp_dpsub *dpsub) 187c979296eSLaurent Pinchart { 188c979296eSLaurent Pinchart if (zynqmp_dpsub_audio_enabled(dpsub)) 189c979296eSLaurent Pinchart return 0; 190c979296eSLaurent Pinchart return clk_get_rate(dpsub->aud_clk); 191c979296eSLaurent Pinchart } 192c979296eSLaurent Pinchart 193c979296eSLaurent Pinchart /* ----------------------------------------------------------------------------- 194d76271d2SHyun Kwon * Probe & Remove 195d76271d2SHyun Kwon */ 196d76271d2SHyun Kwon 197d76271d2SHyun Kwon static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub) 198d76271d2SHyun Kwon { 199d76271d2SHyun Kwon int ret; 200d76271d2SHyun Kwon 201d76271d2SHyun Kwon dpsub->apb_clk = devm_clk_get(dpsub->dev, "dp_apb_clk"); 202d76271d2SHyun Kwon if (IS_ERR(dpsub->apb_clk)) 203d76271d2SHyun Kwon return PTR_ERR(dpsub->apb_clk); 204d76271d2SHyun Kwon 205d76271d2SHyun Kwon ret = clk_prepare_enable(dpsub->apb_clk); 206d76271d2SHyun Kwon if (ret) { 207d76271d2SHyun Kwon dev_err(dpsub->dev, "failed to enable the APB clock\n"); 208d76271d2SHyun Kwon return ret; 209d76271d2SHyun Kwon } 210d76271d2SHyun Kwon 211c979296eSLaurent Pinchart /* 212c979296eSLaurent Pinchart * Try the live PL video clock, and fall back to the PS clock if the 213c979296eSLaurent Pinchart * live PL video clock isn't valid. 214c979296eSLaurent Pinchart */ 2151682ade6SLaurent Pinchart dpsub->vid_clk = devm_clk_get(dpsub->dev, "dp_live_video_in_clk"); 2161682ade6SLaurent Pinchart if (!IS_ERR(dpsub->vid_clk)) 2171682ade6SLaurent Pinchart dpsub->vid_clk_from_ps = false; 2181682ade6SLaurent Pinchart else if (PTR_ERR(dpsub->vid_clk) == -EPROBE_DEFER) 2191682ade6SLaurent Pinchart return PTR_ERR(dpsub->vid_clk); 2201682ade6SLaurent Pinchart 2211682ade6SLaurent Pinchart if (IS_ERR_OR_NULL(dpsub->vid_clk)) { 2221682ade6SLaurent Pinchart dpsub->vid_clk = devm_clk_get(dpsub->dev, "dp_vtc_pixel_clk_in"); 2231682ade6SLaurent Pinchart if (IS_ERR(dpsub->vid_clk)) { 2241682ade6SLaurent Pinchart dev_err(dpsub->dev, "failed to init any video clock\n"); 2251682ade6SLaurent Pinchart return PTR_ERR(dpsub->vid_clk); 2261682ade6SLaurent Pinchart } 2271682ade6SLaurent Pinchart dpsub->vid_clk_from_ps = true; 2281682ade6SLaurent Pinchart } 2291682ade6SLaurent Pinchart 230c979296eSLaurent Pinchart /* 231c979296eSLaurent Pinchart * Try the live PL audio clock, and fall back to the PS clock if the 232c979296eSLaurent Pinchart * live PL audio clock isn't valid. Missing audio clock disables audio 233c979296eSLaurent Pinchart * but isn't an error. 234c979296eSLaurent Pinchart */ 235c979296eSLaurent Pinchart dpsub->aud_clk = devm_clk_get(dpsub->dev, "dp_live_audio_aclk"); 236c979296eSLaurent Pinchart if (!IS_ERR(dpsub->aud_clk)) { 237c979296eSLaurent Pinchart dpsub->aud_clk_from_ps = false; 238c979296eSLaurent Pinchart return 0; 239c979296eSLaurent Pinchart } 240c979296eSLaurent Pinchart 241c979296eSLaurent Pinchart dpsub->aud_clk = devm_clk_get(dpsub->dev, "dp_aud_clk"); 242c979296eSLaurent Pinchart if (!IS_ERR(dpsub->aud_clk)) { 243c979296eSLaurent Pinchart dpsub->aud_clk_from_ps = true; 244c979296eSLaurent Pinchart return 0; 245c979296eSLaurent Pinchart } 246c979296eSLaurent Pinchart 247c979296eSLaurent Pinchart dev_info(dpsub->dev, "audio disabled due to missing clock\n"); 248d76271d2SHyun Kwon return 0; 249d76271d2SHyun Kwon } 250d76271d2SHyun Kwon 251*6ca91bb4SLaurent Pinchart static void zynqmp_dpsub_release(struct drm_device *drm, void *res) 252*6ca91bb4SLaurent Pinchart { 253*6ca91bb4SLaurent Pinchart struct zynqmp_dpsub *dpsub = res; 254*6ca91bb4SLaurent Pinchart 255*6ca91bb4SLaurent Pinchart kfree(dpsub->disp); 256*6ca91bb4SLaurent Pinchart kfree(dpsub->dp); 257*6ca91bb4SLaurent Pinchart } 258*6ca91bb4SLaurent Pinchart 259d76271d2SHyun Kwon static int zynqmp_dpsub_probe(struct platform_device *pdev) 260d76271d2SHyun Kwon { 261d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub; 262d76271d2SHyun Kwon int ret; 263d76271d2SHyun Kwon 264d76271d2SHyun Kwon /* Allocate private data. */ 265075342eaSDaniel Vetter dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver, 266075342eaSDaniel Vetter struct zynqmp_dpsub, drm); 267075342eaSDaniel Vetter if (IS_ERR(dpsub)) 268075342eaSDaniel Vetter return PTR_ERR(dpsub); 269d76271d2SHyun Kwon 270*6ca91bb4SLaurent Pinchart ret = drmm_add_action(&dpsub->drm, zynqmp_dpsub_release, dpsub); 271*6ca91bb4SLaurent Pinchart if (ret < 0) 272*6ca91bb4SLaurent Pinchart return ret; 273*6ca91bb4SLaurent Pinchart 274d76271d2SHyun Kwon dpsub->dev = &pdev->dev; 275d76271d2SHyun Kwon platform_set_drvdata(pdev, dpsub); 276d76271d2SHyun Kwon 277d76271d2SHyun Kwon dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT)); 278d76271d2SHyun Kwon 279d76271d2SHyun Kwon /* Try the reserved memory. Proceed if there's none. */ 280d76271d2SHyun Kwon of_reserved_mem_device_init(&pdev->dev); 281d76271d2SHyun Kwon 282d76271d2SHyun Kwon ret = zynqmp_dpsub_init_clocks(dpsub); 283d76271d2SHyun Kwon if (ret < 0) 284d76271d2SHyun Kwon goto err_mem; 285d76271d2SHyun Kwon 286d76271d2SHyun Kwon pm_runtime_enable(&pdev->dev); 287d76271d2SHyun Kwon 288d76271d2SHyun Kwon /* 289d76271d2SHyun Kwon * DP should be probed first so that the zynqmp_disp can set the output 290d76271d2SHyun Kwon * format accordingly. 291d76271d2SHyun Kwon */ 292*6ca91bb4SLaurent Pinchart ret = zynqmp_dp_probe(dpsub); 293d76271d2SHyun Kwon if (ret) 294d76271d2SHyun Kwon goto err_pm; 295d76271d2SHyun Kwon 296*6ca91bb4SLaurent Pinchart ret = zynqmp_disp_probe(dpsub); 297d76271d2SHyun Kwon if (ret) 298d76271d2SHyun Kwon goto err_dp; 299d76271d2SHyun Kwon 300d76271d2SHyun Kwon ret = zynqmp_dpsub_drm_init(dpsub); 301d76271d2SHyun Kwon if (ret) 302d76271d2SHyun Kwon goto err_disp; 303d76271d2SHyun Kwon 304d76271d2SHyun Kwon dev_info(&pdev->dev, "ZynqMP DisplayPort Subsystem driver probed"); 305d76271d2SHyun Kwon 306d76271d2SHyun Kwon return 0; 307d76271d2SHyun Kwon 308d76271d2SHyun Kwon err_disp: 309d76271d2SHyun Kwon zynqmp_disp_remove(dpsub); 310d76271d2SHyun Kwon err_dp: 311d76271d2SHyun Kwon zynqmp_dp_remove(dpsub); 312d76271d2SHyun Kwon err_pm: 313d76271d2SHyun Kwon pm_runtime_disable(&pdev->dev); 314d76271d2SHyun Kwon clk_disable_unprepare(dpsub->apb_clk); 315d76271d2SHyun Kwon err_mem: 316d76271d2SHyun Kwon of_reserved_mem_device_release(&pdev->dev); 317d76271d2SHyun Kwon return ret; 318d76271d2SHyun Kwon } 319d76271d2SHyun Kwon 320d76271d2SHyun Kwon static int zynqmp_dpsub_remove(struct platform_device *pdev) 321d76271d2SHyun Kwon { 322d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev); 323d76271d2SHyun Kwon struct drm_device *drm = &dpsub->drm; 324d76271d2SHyun Kwon 325d76271d2SHyun Kwon drm_dev_unregister(drm); 326d76271d2SHyun Kwon drm_atomic_helper_shutdown(drm); 327d76271d2SHyun Kwon drm_kms_helper_poll_fini(drm); 328d76271d2SHyun Kwon 329d76271d2SHyun Kwon zynqmp_disp_remove(dpsub); 330d76271d2SHyun Kwon zynqmp_dp_remove(dpsub); 331d76271d2SHyun Kwon 332d76271d2SHyun Kwon pm_runtime_disable(&pdev->dev); 333d76271d2SHyun Kwon clk_disable_unprepare(dpsub->apb_clk); 334d76271d2SHyun Kwon of_reserved_mem_device_release(&pdev->dev); 335d76271d2SHyun Kwon 336d76271d2SHyun Kwon return 0; 337d76271d2SHyun Kwon } 338d76271d2SHyun Kwon 339d76271d2SHyun Kwon static void zynqmp_dpsub_shutdown(struct platform_device *pdev) 340d76271d2SHyun Kwon { 341d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev); 342d76271d2SHyun Kwon 343d76271d2SHyun Kwon drm_atomic_helper_shutdown(&dpsub->drm); 344d76271d2SHyun Kwon } 345d76271d2SHyun Kwon 346d76271d2SHyun Kwon static const struct of_device_id zynqmp_dpsub_of_match[] = { 347d76271d2SHyun Kwon { .compatible = "xlnx,zynqmp-dpsub-1.7", }, 348d76271d2SHyun Kwon { /* end of table */ }, 349d76271d2SHyun Kwon }; 350d76271d2SHyun Kwon MODULE_DEVICE_TABLE(of, zynqmp_dpsub_of_match); 351d76271d2SHyun Kwon 352d76271d2SHyun Kwon static struct platform_driver zynqmp_dpsub_driver = { 353d76271d2SHyun Kwon .probe = zynqmp_dpsub_probe, 354d76271d2SHyun Kwon .remove = zynqmp_dpsub_remove, 355d76271d2SHyun Kwon .shutdown = zynqmp_dpsub_shutdown, 356d76271d2SHyun Kwon .driver = { 357d76271d2SHyun Kwon .name = "zynqmp-dpsub", 358d76271d2SHyun Kwon .pm = &zynqmp_dpsub_pm_ops, 359d76271d2SHyun Kwon .of_match_table = zynqmp_dpsub_of_match, 360d76271d2SHyun Kwon }, 361d76271d2SHyun Kwon }; 362d76271d2SHyun Kwon 363fad54534SJavier Martinez Canillas drm_module_platform_driver(zynqmp_dpsub_driver); 364d76271d2SHyun Kwon 365d76271d2SHyun Kwon MODULE_AUTHOR("Xilinx, Inc."); 366d76271d2SHyun Kwon MODULE_DESCRIPTION("ZynqMP DP Subsystem Driver"); 367d76271d2SHyun Kwon MODULE_LICENSE("GPL v2"); 368