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> 18d76271d2SHyun Kwon 19d76271d2SHyun Kwon #include <drm/drm_atomic_helper.h> 20e8e35733SLaurent Pinchart #include <drm/drm_bridge.h> 21cbb11ef9SLaurent Pinchart #include <drm/drm_bridge_connector.h> 22cbb11ef9SLaurent Pinchart #include <drm/drm_connector.h> 23d76271d2SHyun Kwon #include <drm/drm_device.h> 24d76271d2SHyun Kwon #include <drm/drm_drv.h> 25d76271d2SHyun Kwon #include <drm/drm_fb_helper.h> 26d76271d2SHyun Kwon #include <drm/drm_fourcc.h> 274a83c26aSDanilo Krummrich #include <drm/drm_gem_dma_helper.h> 28d76271d2SHyun Kwon #include <drm/drm_gem_framebuffer_helper.h> 29d76271d2SHyun Kwon #include <drm/drm_managed.h> 30d76271d2SHyun Kwon #include <drm/drm_mode_config.h> 31fad54534SJavier Martinez Canillas #include <drm/drm_module.h> 32d76271d2SHyun Kwon #include <drm/drm_probe_helper.h> 33e8e35733SLaurent Pinchart #include <drm/drm_simple_kms_helper.h> 34d76271d2SHyun Kwon #include <drm/drm_vblank.h> 35d76271d2SHyun Kwon 36d76271d2SHyun Kwon #include "zynqmp_disp.h" 37d76271d2SHyun Kwon #include "zynqmp_dp.h" 38d76271d2SHyun Kwon #include "zynqmp_dpsub.h" 39d76271d2SHyun Kwon 40d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 41d76271d2SHyun Kwon * Dumb Buffer & Framebuffer Allocation 42d76271d2SHyun Kwon */ 43d76271d2SHyun Kwon 44d76271d2SHyun Kwon static int zynqmp_dpsub_dumb_create(struct drm_file *file_priv, 45d76271d2SHyun Kwon struct drm_device *drm, 46d76271d2SHyun Kwon struct drm_mode_create_dumb *args) 47d76271d2SHyun Kwon { 48d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm); 49d76271d2SHyun Kwon unsigned int pitch = DIV_ROUND_UP(args->width * args->bpp, 8); 50d76271d2SHyun Kwon 51d76271d2SHyun Kwon /* Enforce the alignment constraints of the DMA engine. */ 52d76271d2SHyun Kwon args->pitch = ALIGN(pitch, dpsub->dma_align); 53d76271d2SHyun Kwon 544a83c26aSDanilo Krummrich return drm_gem_dma_dumb_create_internal(file_priv, drm, args); 55d76271d2SHyun Kwon } 56d76271d2SHyun Kwon 57d76271d2SHyun Kwon static struct drm_framebuffer * 58d76271d2SHyun Kwon zynqmp_dpsub_fb_create(struct drm_device *drm, struct drm_file *file_priv, 59d76271d2SHyun Kwon const struct drm_mode_fb_cmd2 *mode_cmd) 60d76271d2SHyun Kwon { 61d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = to_zynqmp_dpsub(drm); 62d76271d2SHyun Kwon struct drm_mode_fb_cmd2 cmd = *mode_cmd; 63d76271d2SHyun Kwon unsigned int i; 64d76271d2SHyun Kwon 65d76271d2SHyun Kwon /* Enforce the alignment constraints of the DMA engine. */ 66d76271d2SHyun Kwon for (i = 0; i < ARRAY_SIZE(cmd.pitches); ++i) 67d76271d2SHyun Kwon cmd.pitches[i] = ALIGN(cmd.pitches[i], dpsub->dma_align); 68d76271d2SHyun Kwon 69d76271d2SHyun Kwon return drm_gem_fb_create(drm, file_priv, &cmd); 70d76271d2SHyun Kwon } 71d76271d2SHyun Kwon 72d76271d2SHyun Kwon static const struct drm_mode_config_funcs zynqmp_dpsub_mode_config_funcs = { 73d76271d2SHyun Kwon .fb_create = zynqmp_dpsub_fb_create, 74d76271d2SHyun Kwon .atomic_check = drm_atomic_helper_check, 75d76271d2SHyun Kwon .atomic_commit = drm_atomic_helper_commit, 76d76271d2SHyun Kwon }; 77d76271d2SHyun Kwon 78d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 79d76271d2SHyun Kwon * DRM/KMS Driver 80d76271d2SHyun Kwon */ 81d76271d2SHyun Kwon 824a83c26aSDanilo Krummrich DEFINE_DRM_GEM_DMA_FOPS(zynqmp_dpsub_drm_fops); 83d76271d2SHyun Kwon 8470a59dd8SDaniel Vetter static const struct drm_driver zynqmp_dpsub_drm_driver = { 85d76271d2SHyun Kwon .driver_features = DRIVER_MODESET | DRIVER_GEM | 86d76271d2SHyun Kwon DRIVER_ATOMIC, 87d76271d2SHyun Kwon 884a83c26aSDanilo Krummrich DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE(zynqmp_dpsub_dumb_create), 89d76271d2SHyun Kwon 90d76271d2SHyun Kwon .fops = &zynqmp_dpsub_drm_fops, 91d76271d2SHyun Kwon 92d76271d2SHyun Kwon .name = "zynqmp-dpsub", 93d76271d2SHyun Kwon .desc = "Xilinx DisplayPort Subsystem Driver", 94d76271d2SHyun Kwon .date = "20130509", 95d76271d2SHyun Kwon .major = 1, 96d76271d2SHyun Kwon .minor = 0, 97d76271d2SHyun Kwon }; 98d76271d2SHyun Kwon 99d76271d2SHyun Kwon static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub) 100d76271d2SHyun Kwon { 101e8e35733SLaurent Pinchart struct drm_encoder *encoder = &dpsub->encoder; 102cbb11ef9SLaurent Pinchart struct drm_connector *connector; 103d76271d2SHyun Kwon struct drm_device *drm = &dpsub->drm; 104d76271d2SHyun Kwon int ret; 105d76271d2SHyun Kwon 106d76271d2SHyun Kwon /* Initialize mode config, vblank and the KMS poll helper. */ 107d76271d2SHyun Kwon ret = drmm_mode_config_init(drm); 108d76271d2SHyun Kwon if (ret < 0) 109075342eaSDaniel Vetter return ret; 110d76271d2SHyun Kwon 111d76271d2SHyun Kwon drm->mode_config.funcs = &zynqmp_dpsub_mode_config_funcs; 112d76271d2SHyun Kwon drm->mode_config.min_width = 0; 113d76271d2SHyun Kwon drm->mode_config.min_height = 0; 114d76271d2SHyun Kwon drm->mode_config.max_width = ZYNQMP_DISP_MAX_WIDTH; 115d76271d2SHyun Kwon drm->mode_config.max_height = ZYNQMP_DISP_MAX_HEIGHT; 116d76271d2SHyun Kwon 117d76271d2SHyun Kwon ret = drm_vblank_init(drm, 1); 118d76271d2SHyun Kwon if (ret) 119075342eaSDaniel Vetter return ret; 120d76271d2SHyun Kwon 121d76271d2SHyun Kwon drm_kms_helper_poll_init(drm); 122d76271d2SHyun Kwon 123d76271d2SHyun Kwon /* 124d76271d2SHyun Kwon * Initialize the DISP and DP components. This will creates planes, 125e8e35733SLaurent Pinchart * CRTC, and a bridge for the DP encoder. 126d76271d2SHyun Kwon */ 127d76271d2SHyun Kwon ret = zynqmp_disp_drm_init(dpsub); 128d76271d2SHyun Kwon if (ret) 129d76271d2SHyun Kwon goto err_poll_fini; 130d76271d2SHyun Kwon 131d76271d2SHyun Kwon ret = zynqmp_dp_drm_init(dpsub); 132d76271d2SHyun Kwon if (ret) 133d76271d2SHyun Kwon goto err_poll_fini; 134d76271d2SHyun Kwon 135e8e35733SLaurent Pinchart /* Create the encoder and attach the bridge. */ 136e8e35733SLaurent Pinchart encoder->possible_crtcs |= zynqmp_disp_get_crtc_mask(dpsub->disp); 137e8e35733SLaurent Pinchart drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_NONE); 138e8e35733SLaurent Pinchart 139cbb11ef9SLaurent Pinchart ret = drm_bridge_attach(encoder, dpsub->bridge, NULL, 140cbb11ef9SLaurent Pinchart DRM_BRIDGE_ATTACH_NO_CONNECTOR); 141e8e35733SLaurent Pinchart if (ret) { 142e8e35733SLaurent Pinchart dev_err(dpsub->dev, "failed to attach bridge to encoder\n"); 143e8e35733SLaurent Pinchart goto err_poll_fini; 144e8e35733SLaurent Pinchart } 145e8e35733SLaurent Pinchart 146cbb11ef9SLaurent Pinchart /* Create the connector for the chain of bridges. */ 147cbb11ef9SLaurent Pinchart connector = drm_bridge_connector_init(drm, encoder); 148cbb11ef9SLaurent Pinchart if (IS_ERR(connector)) { 149cbb11ef9SLaurent Pinchart dev_err(dpsub->dev, "failed to created connector\n"); 150cbb11ef9SLaurent Pinchart ret = PTR_ERR(connector); 151cbb11ef9SLaurent Pinchart goto err_poll_fini; 152cbb11ef9SLaurent Pinchart } 153cbb11ef9SLaurent Pinchart 154cbb11ef9SLaurent Pinchart ret = drm_connector_attach_encoder(connector, encoder); 155cbb11ef9SLaurent Pinchart if (ret < 0) { 156cbb11ef9SLaurent Pinchart dev_err(dpsub->dev, "failed to attach connector to encoder\n"); 157cbb11ef9SLaurent Pinchart goto err_poll_fini; 158cbb11ef9SLaurent Pinchart } 159cbb11ef9SLaurent Pinchart 160d76271d2SHyun Kwon /* Reset all components and register the DRM device. */ 161d76271d2SHyun Kwon drm_mode_config_reset(drm); 162d76271d2SHyun Kwon 163d76271d2SHyun Kwon ret = drm_dev_register(drm, 0); 164d76271d2SHyun Kwon if (ret < 0) 165d76271d2SHyun Kwon goto err_poll_fini; 166d76271d2SHyun Kwon 167d76271d2SHyun Kwon /* Initialize fbdev generic emulation. */ 168d76271d2SHyun Kwon drm_fbdev_generic_setup(drm, 24); 169d76271d2SHyun Kwon 170d76271d2SHyun Kwon return 0; 171d76271d2SHyun Kwon 172d76271d2SHyun Kwon err_poll_fini: 173d76271d2SHyun Kwon drm_kms_helper_poll_fini(drm); 174d76271d2SHyun Kwon return ret; 175d76271d2SHyun Kwon } 176d76271d2SHyun Kwon 177d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 178d76271d2SHyun Kwon * Power Management 179d76271d2SHyun Kwon */ 180d76271d2SHyun Kwon 181d76271d2SHyun Kwon static int __maybe_unused zynqmp_dpsub_suspend(struct device *dev) 182d76271d2SHyun Kwon { 183d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev); 184d76271d2SHyun Kwon 185d76271d2SHyun Kwon return drm_mode_config_helper_suspend(&dpsub->drm); 186d76271d2SHyun Kwon } 187d76271d2SHyun Kwon 188d76271d2SHyun Kwon static int __maybe_unused zynqmp_dpsub_resume(struct device *dev) 189d76271d2SHyun Kwon { 190d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev); 191d76271d2SHyun Kwon 192d76271d2SHyun Kwon return drm_mode_config_helper_resume(&dpsub->drm); 193d76271d2SHyun Kwon } 194d76271d2SHyun Kwon 195d76271d2SHyun Kwon static const struct dev_pm_ops zynqmp_dpsub_pm_ops = { 196d76271d2SHyun Kwon SET_SYSTEM_SLEEP_PM_OPS(zynqmp_dpsub_suspend, zynqmp_dpsub_resume) 197d76271d2SHyun Kwon }; 198d76271d2SHyun Kwon 199d76271d2SHyun Kwon /* ----------------------------------------------------------------------------- 200*c979296eSLaurent Pinchart * DPSUB Configuration 201*c979296eSLaurent Pinchart */ 202*c979296eSLaurent Pinchart 203*c979296eSLaurent Pinchart /** 204*c979296eSLaurent Pinchart * zynqmp_dpsub_audio_enabled - If the audio is enabled 205*c979296eSLaurent Pinchart * @dpsub: DisplayPort subsystem 206*c979296eSLaurent Pinchart * 207*c979296eSLaurent Pinchart * Return if the audio is enabled depending on the audio clock. 208*c979296eSLaurent Pinchart * 209*c979296eSLaurent Pinchart * Return: true if audio is enabled, or false. 210*c979296eSLaurent Pinchart */ 211*c979296eSLaurent Pinchart bool zynqmp_dpsub_audio_enabled(struct zynqmp_dpsub *dpsub) 212*c979296eSLaurent Pinchart { 213*c979296eSLaurent Pinchart return !!dpsub->aud_clk; 214*c979296eSLaurent Pinchart } 215*c979296eSLaurent Pinchart 216*c979296eSLaurent Pinchart /** 217*c979296eSLaurent Pinchart * zynqmp_dpsub_get_audio_clk_rate - Get the current audio clock rate 218*c979296eSLaurent Pinchart * @dpsub: DisplayPort subsystem 219*c979296eSLaurent Pinchart * 220*c979296eSLaurent Pinchart * Return: the current audio clock rate. 221*c979296eSLaurent Pinchart */ 222*c979296eSLaurent Pinchart unsigned int zynqmp_dpsub_get_audio_clk_rate(struct zynqmp_dpsub *dpsub) 223*c979296eSLaurent Pinchart { 224*c979296eSLaurent Pinchart if (zynqmp_dpsub_audio_enabled(dpsub)) 225*c979296eSLaurent Pinchart return 0; 226*c979296eSLaurent Pinchart return clk_get_rate(dpsub->aud_clk); 227*c979296eSLaurent Pinchart } 228*c979296eSLaurent Pinchart 229*c979296eSLaurent Pinchart /* ----------------------------------------------------------------------------- 230d76271d2SHyun Kwon * Probe & Remove 231d76271d2SHyun Kwon */ 232d76271d2SHyun Kwon 233d76271d2SHyun Kwon static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub) 234d76271d2SHyun Kwon { 235d76271d2SHyun Kwon int ret; 236d76271d2SHyun Kwon 237d76271d2SHyun Kwon dpsub->apb_clk = devm_clk_get(dpsub->dev, "dp_apb_clk"); 238d76271d2SHyun Kwon if (IS_ERR(dpsub->apb_clk)) 239d76271d2SHyun Kwon return PTR_ERR(dpsub->apb_clk); 240d76271d2SHyun Kwon 241d76271d2SHyun Kwon ret = clk_prepare_enable(dpsub->apb_clk); 242d76271d2SHyun Kwon if (ret) { 243d76271d2SHyun Kwon dev_err(dpsub->dev, "failed to enable the APB clock\n"); 244d76271d2SHyun Kwon return ret; 245d76271d2SHyun Kwon } 246d76271d2SHyun Kwon 247*c979296eSLaurent Pinchart /* 248*c979296eSLaurent Pinchart * Try the live PL video clock, and fall back to the PS clock if the 249*c979296eSLaurent Pinchart * live PL video clock isn't valid. 250*c979296eSLaurent Pinchart */ 2511682ade6SLaurent Pinchart dpsub->vid_clk = devm_clk_get(dpsub->dev, "dp_live_video_in_clk"); 2521682ade6SLaurent Pinchart if (!IS_ERR(dpsub->vid_clk)) 2531682ade6SLaurent Pinchart dpsub->vid_clk_from_ps = false; 2541682ade6SLaurent Pinchart else if (PTR_ERR(dpsub->vid_clk) == -EPROBE_DEFER) 2551682ade6SLaurent Pinchart return PTR_ERR(dpsub->vid_clk); 2561682ade6SLaurent Pinchart 2571682ade6SLaurent Pinchart if (IS_ERR_OR_NULL(dpsub->vid_clk)) { 2581682ade6SLaurent Pinchart dpsub->vid_clk = devm_clk_get(dpsub->dev, "dp_vtc_pixel_clk_in"); 2591682ade6SLaurent Pinchart if (IS_ERR(dpsub->vid_clk)) { 2601682ade6SLaurent Pinchart dev_err(dpsub->dev, "failed to init any video clock\n"); 2611682ade6SLaurent Pinchart return PTR_ERR(dpsub->vid_clk); 2621682ade6SLaurent Pinchart } 2631682ade6SLaurent Pinchart dpsub->vid_clk_from_ps = true; 2641682ade6SLaurent Pinchart } 2651682ade6SLaurent Pinchart 266*c979296eSLaurent Pinchart /* 267*c979296eSLaurent Pinchart * Try the live PL audio clock, and fall back to the PS clock if the 268*c979296eSLaurent Pinchart * live PL audio clock isn't valid. Missing audio clock disables audio 269*c979296eSLaurent Pinchart * but isn't an error. 270*c979296eSLaurent Pinchart */ 271*c979296eSLaurent Pinchart dpsub->aud_clk = devm_clk_get(dpsub->dev, "dp_live_audio_aclk"); 272*c979296eSLaurent Pinchart if (!IS_ERR(dpsub->aud_clk)) { 273*c979296eSLaurent Pinchart dpsub->aud_clk_from_ps = false; 274*c979296eSLaurent Pinchart return 0; 275*c979296eSLaurent Pinchart } 276*c979296eSLaurent Pinchart 277*c979296eSLaurent Pinchart dpsub->aud_clk = devm_clk_get(dpsub->dev, "dp_aud_clk"); 278*c979296eSLaurent Pinchart if (!IS_ERR(dpsub->aud_clk)) { 279*c979296eSLaurent Pinchart dpsub->aud_clk_from_ps = true; 280*c979296eSLaurent Pinchart return 0; 281*c979296eSLaurent Pinchart } 282*c979296eSLaurent Pinchart 283*c979296eSLaurent Pinchart dev_info(dpsub->dev, "audio disabled due to missing clock\n"); 284d76271d2SHyun Kwon return 0; 285d76271d2SHyun Kwon } 286d76271d2SHyun Kwon 287d76271d2SHyun Kwon static int zynqmp_dpsub_probe(struct platform_device *pdev) 288d76271d2SHyun Kwon { 289d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub; 290d76271d2SHyun Kwon int ret; 291d76271d2SHyun Kwon 292d76271d2SHyun Kwon /* Allocate private data. */ 293075342eaSDaniel Vetter dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver, 294075342eaSDaniel Vetter struct zynqmp_dpsub, drm); 295075342eaSDaniel Vetter if (IS_ERR(dpsub)) 296075342eaSDaniel Vetter return PTR_ERR(dpsub); 297d76271d2SHyun Kwon 298d76271d2SHyun Kwon dpsub->dev = &pdev->dev; 299d76271d2SHyun Kwon platform_set_drvdata(pdev, dpsub); 300d76271d2SHyun Kwon 301d76271d2SHyun Kwon dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT)); 302d76271d2SHyun Kwon 303d76271d2SHyun Kwon /* Try the reserved memory. Proceed if there's none. */ 304d76271d2SHyun Kwon of_reserved_mem_device_init(&pdev->dev); 305d76271d2SHyun Kwon 306d76271d2SHyun Kwon ret = zynqmp_dpsub_init_clocks(dpsub); 307d76271d2SHyun Kwon if (ret < 0) 308d76271d2SHyun Kwon goto err_mem; 309d76271d2SHyun Kwon 310d76271d2SHyun Kwon pm_runtime_enable(&pdev->dev); 311d76271d2SHyun Kwon 312d76271d2SHyun Kwon /* 313d76271d2SHyun Kwon * DP should be probed first so that the zynqmp_disp can set the output 314d76271d2SHyun Kwon * format accordingly. 315d76271d2SHyun Kwon */ 316d76271d2SHyun Kwon ret = zynqmp_dp_probe(dpsub, &dpsub->drm); 317d76271d2SHyun Kwon if (ret) 318d76271d2SHyun Kwon goto err_pm; 319d76271d2SHyun Kwon 320d76271d2SHyun Kwon ret = zynqmp_disp_probe(dpsub, &dpsub->drm); 321d76271d2SHyun Kwon if (ret) 322d76271d2SHyun Kwon goto err_dp; 323d76271d2SHyun Kwon 324d76271d2SHyun Kwon ret = zynqmp_dpsub_drm_init(dpsub); 325d76271d2SHyun Kwon if (ret) 326d76271d2SHyun Kwon goto err_disp; 327d76271d2SHyun Kwon 328d76271d2SHyun Kwon dev_info(&pdev->dev, "ZynqMP DisplayPort Subsystem driver probed"); 329d76271d2SHyun Kwon 330d76271d2SHyun Kwon return 0; 331d76271d2SHyun Kwon 332d76271d2SHyun Kwon err_disp: 333d76271d2SHyun Kwon zynqmp_disp_remove(dpsub); 334d76271d2SHyun Kwon err_dp: 335d76271d2SHyun Kwon zynqmp_dp_remove(dpsub); 336d76271d2SHyun Kwon err_pm: 337d76271d2SHyun Kwon pm_runtime_disable(&pdev->dev); 338d76271d2SHyun Kwon clk_disable_unprepare(dpsub->apb_clk); 339d76271d2SHyun Kwon err_mem: 340d76271d2SHyun Kwon of_reserved_mem_device_release(&pdev->dev); 341d76271d2SHyun Kwon return ret; 342d76271d2SHyun Kwon } 343d76271d2SHyun Kwon 344d76271d2SHyun Kwon static int zynqmp_dpsub_remove(struct platform_device *pdev) 345d76271d2SHyun Kwon { 346d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev); 347d76271d2SHyun Kwon struct drm_device *drm = &dpsub->drm; 348d76271d2SHyun Kwon 349d76271d2SHyun Kwon drm_dev_unregister(drm); 350d76271d2SHyun Kwon drm_atomic_helper_shutdown(drm); 351d76271d2SHyun Kwon drm_kms_helper_poll_fini(drm); 352d76271d2SHyun Kwon 353d76271d2SHyun Kwon zynqmp_disp_remove(dpsub); 354d76271d2SHyun Kwon zynqmp_dp_remove(dpsub); 355d76271d2SHyun Kwon 356d76271d2SHyun Kwon pm_runtime_disable(&pdev->dev); 357d76271d2SHyun Kwon clk_disable_unprepare(dpsub->apb_clk); 358d76271d2SHyun Kwon of_reserved_mem_device_release(&pdev->dev); 359d76271d2SHyun Kwon 360d76271d2SHyun Kwon return 0; 361d76271d2SHyun Kwon } 362d76271d2SHyun Kwon 363d76271d2SHyun Kwon static void zynqmp_dpsub_shutdown(struct platform_device *pdev) 364d76271d2SHyun Kwon { 365d76271d2SHyun Kwon struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev); 366d76271d2SHyun Kwon 367d76271d2SHyun Kwon drm_atomic_helper_shutdown(&dpsub->drm); 368d76271d2SHyun Kwon } 369d76271d2SHyun Kwon 370d76271d2SHyun Kwon static const struct of_device_id zynqmp_dpsub_of_match[] = { 371d76271d2SHyun Kwon { .compatible = "xlnx,zynqmp-dpsub-1.7", }, 372d76271d2SHyun Kwon { /* end of table */ }, 373d76271d2SHyun Kwon }; 374d76271d2SHyun Kwon MODULE_DEVICE_TABLE(of, zynqmp_dpsub_of_match); 375d76271d2SHyun Kwon 376d76271d2SHyun Kwon static struct platform_driver zynqmp_dpsub_driver = { 377d76271d2SHyun Kwon .probe = zynqmp_dpsub_probe, 378d76271d2SHyun Kwon .remove = zynqmp_dpsub_remove, 379d76271d2SHyun Kwon .shutdown = zynqmp_dpsub_shutdown, 380d76271d2SHyun Kwon .driver = { 381d76271d2SHyun Kwon .name = "zynqmp-dpsub", 382d76271d2SHyun Kwon .pm = &zynqmp_dpsub_pm_ops, 383d76271d2SHyun Kwon .of_match_table = zynqmp_dpsub_of_match, 384d76271d2SHyun Kwon }, 385d76271d2SHyun Kwon }; 386d76271d2SHyun Kwon 387fad54534SJavier Martinez Canillas drm_module_platform_driver(zynqmp_dpsub_driver); 388d76271d2SHyun Kwon 389d76271d2SHyun Kwon MODULE_AUTHOR("Xilinx, Inc."); 390d76271d2SHyun Kwon MODULE_DESCRIPTION("ZynqMP DP Subsystem Driver"); 391d76271d2SHyun Kwon MODULE_LICENSE("GPL v2"); 392