1bbbe775eSNeil Armstrong /* 2bbbe775eSNeil Armstrong * Copyright (C) 2016 BayLibre, SAS 3bbbe775eSNeil Armstrong * Author: Neil Armstrong <narmstrong@baylibre.com> 4bbbe775eSNeil Armstrong * Copyright (C) 2014 Endless Mobile 5bbbe775eSNeil Armstrong * 6bbbe775eSNeil Armstrong * This program is free software; you can redistribute it and/or 7bbbe775eSNeil Armstrong * modify it under the terms of the GNU General Public License as 8bbbe775eSNeil Armstrong * published by the Free Software Foundation; either version 2 of the 9bbbe775eSNeil Armstrong * License, or (at your option) any later version. 10bbbe775eSNeil Armstrong * 11bbbe775eSNeil Armstrong * This program is distributed in the hope that it will be useful, but 12bbbe775eSNeil Armstrong * WITHOUT ANY WARRANTY; without even the implied warranty of 13bbbe775eSNeil Armstrong * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14bbbe775eSNeil Armstrong * General Public License for more details. 15bbbe775eSNeil Armstrong * 16bbbe775eSNeil Armstrong * You should have received a copy of the GNU General Public License 17bbbe775eSNeil Armstrong * along with this program; if not, see <http://www.gnu.org/licenses/>. 18bbbe775eSNeil Armstrong * 19bbbe775eSNeil Armstrong * Written by: 20bbbe775eSNeil Armstrong * Jasper St. Pierre <jstpierre@mecheye.net> 21bbbe775eSNeil Armstrong */ 22bbbe775eSNeil Armstrong 23bbbe775eSNeil Armstrong #include <linux/kernel.h> 24bbbe775eSNeil Armstrong #include <linux/module.h> 25bbbe775eSNeil Armstrong #include <linux/mutex.h> 26bbbe775eSNeil Armstrong #include <linux/platform_device.h> 27a41e82e6SNeil Armstrong #include <linux/component.h> 28bbbe775eSNeil Armstrong #include <linux/of_graph.h> 29bbbe775eSNeil Armstrong 30bbbe775eSNeil Armstrong #include <drm/drmP.h> 31bbbe775eSNeil Armstrong #include <drm/drm_atomic.h> 32bbbe775eSNeil Armstrong #include <drm/drm_atomic_helper.h> 33bbbe775eSNeil Armstrong #include <drm/drm_flip_work.h> 34bbbe775eSNeil Armstrong #include <drm/drm_crtc_helper.h> 35bbbe775eSNeil Armstrong #include <drm/drm_plane_helper.h> 36bbbe775eSNeil Armstrong #include <drm/drm_gem_cma_helper.h> 37bbbe775eSNeil Armstrong #include <drm/drm_fb_cma_helper.h> 38bbbe775eSNeil Armstrong #include <drm/drm_rect.h> 39bbbe775eSNeil Armstrong #include <drm/drm_fb_helper.h> 40bbbe775eSNeil Armstrong 41bbbe775eSNeil Armstrong #include "meson_drv.h" 42bbbe775eSNeil Armstrong #include "meson_plane.h" 43bbbe775eSNeil Armstrong #include "meson_crtc.h" 44bbbe775eSNeil Armstrong #include "meson_venc_cvbs.h" 45bbbe775eSNeil Armstrong 46bbbe775eSNeil Armstrong #include "meson_vpp.h" 47bbbe775eSNeil Armstrong #include "meson_viu.h" 48bbbe775eSNeil Armstrong #include "meson_venc.h" 49bbbe775eSNeil Armstrong #include "meson_canvas.h" 50bbbe775eSNeil Armstrong #include "meson_registers.h" 51bbbe775eSNeil Armstrong 52bbbe775eSNeil Armstrong #define DRIVER_NAME "meson" 53bbbe775eSNeil Armstrong #define DRIVER_DESC "Amlogic Meson DRM driver" 54bbbe775eSNeil Armstrong 552021d5b7SNeil Armstrong /** 562021d5b7SNeil Armstrong * DOC: Video Processing Unit 57bbbe775eSNeil Armstrong * 58bbbe775eSNeil Armstrong * VPU Handles the Global Video Processing, it includes management of the 59bbbe775eSNeil Armstrong * clocks gates, blocks reset lines and power domains. 60bbbe775eSNeil Armstrong * 61bbbe775eSNeil Armstrong * What is missing : 622021d5b7SNeil Armstrong * 63bbbe775eSNeil Armstrong * - Full reset of entire video processing HW blocks 64bbbe775eSNeil Armstrong * - Scaling and setup of the VPU clock 65bbbe775eSNeil Armstrong * - Bus clock gates 66bbbe775eSNeil Armstrong * - Powering up video processing HW blocks 67bbbe775eSNeil Armstrong * - Powering Up HDMI controller and PHY 68bbbe775eSNeil Armstrong */ 69bbbe775eSNeil Armstrong 70bbbe775eSNeil Armstrong static void meson_fb_output_poll_changed(struct drm_device *dev) 71bbbe775eSNeil Armstrong { 72bbbe775eSNeil Armstrong struct meson_drm *priv = dev->dev_private; 73bbbe775eSNeil Armstrong 74bbbe775eSNeil Armstrong drm_fbdev_cma_hotplug_event(priv->fbdev); 75bbbe775eSNeil Armstrong } 76bbbe775eSNeil Armstrong 77bbbe775eSNeil Armstrong static const struct drm_mode_config_funcs meson_mode_config_funcs = { 78bbbe775eSNeil Armstrong .output_poll_changed = meson_fb_output_poll_changed, 79bbbe775eSNeil Armstrong .atomic_check = drm_atomic_helper_check, 80bbbe775eSNeil Armstrong .atomic_commit = drm_atomic_helper_commit, 81bbbe775eSNeil Armstrong .fb_create = drm_fb_cma_create, 82bbbe775eSNeil Armstrong }; 83bbbe775eSNeil Armstrong 84bbbe775eSNeil Armstrong static irqreturn_t meson_irq(int irq, void *arg) 85bbbe775eSNeil Armstrong { 86bbbe775eSNeil Armstrong struct drm_device *dev = arg; 87bbbe775eSNeil Armstrong struct meson_drm *priv = dev->dev_private; 88bbbe775eSNeil Armstrong 89bbbe775eSNeil Armstrong (void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG)); 90bbbe775eSNeil Armstrong 91bbbe775eSNeil Armstrong meson_crtc_irq(priv); 92bbbe775eSNeil Armstrong 93bbbe775eSNeil Armstrong return IRQ_HANDLED; 94bbbe775eSNeil Armstrong } 95bbbe775eSNeil Armstrong 96d55f7e5dSDaniel Vetter DEFINE_DRM_GEM_CMA_FOPS(fops); 97bbbe775eSNeil Armstrong 98bbbe775eSNeil Armstrong static struct drm_driver meson_driver = { 99bbbe775eSNeil Armstrong .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | 100bbbe775eSNeil Armstrong DRIVER_MODESET | DRIVER_PRIME | 101bbbe775eSNeil Armstrong DRIVER_ATOMIC, 102bbbe775eSNeil Armstrong 103bbbe775eSNeil Armstrong /* IRQ */ 104bbbe775eSNeil Armstrong .irq_handler = meson_irq, 105bbbe775eSNeil Armstrong 106bbbe775eSNeil Armstrong /* PRIME Ops */ 107bbbe775eSNeil Armstrong .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 108bbbe775eSNeil Armstrong .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 109bbbe775eSNeil Armstrong .gem_prime_import = drm_gem_prime_import, 110bbbe775eSNeil Armstrong .gem_prime_export = drm_gem_prime_export, 111bbbe775eSNeil Armstrong .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, 112bbbe775eSNeil Armstrong .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, 113bbbe775eSNeil Armstrong .gem_prime_vmap = drm_gem_cma_prime_vmap, 114bbbe775eSNeil Armstrong .gem_prime_vunmap = drm_gem_cma_prime_vunmap, 115bbbe775eSNeil Armstrong .gem_prime_mmap = drm_gem_cma_prime_mmap, 116bbbe775eSNeil Armstrong 117bbbe775eSNeil Armstrong /* GEM Ops */ 118bbbe775eSNeil Armstrong .dumb_create = drm_gem_cma_dumb_create, 119bbbe775eSNeil Armstrong .dumb_destroy = drm_gem_dumb_destroy, 120bbbe775eSNeil Armstrong .dumb_map_offset = drm_gem_cma_dumb_map_offset, 121bbbe775eSNeil Armstrong .gem_free_object_unlocked = drm_gem_cma_free_object, 122bbbe775eSNeil Armstrong .gem_vm_ops = &drm_gem_cma_vm_ops, 123bbbe775eSNeil Armstrong 124bbbe775eSNeil Armstrong /* Misc */ 125bbbe775eSNeil Armstrong .fops = &fops, 126bbbe775eSNeil Armstrong .name = DRIVER_NAME, 127bbbe775eSNeil Armstrong .desc = DRIVER_DESC, 128bbbe775eSNeil Armstrong .date = "20161109", 129bbbe775eSNeil Armstrong .major = 1, 130bbbe775eSNeil Armstrong .minor = 0, 131bbbe775eSNeil Armstrong }; 132bbbe775eSNeil Armstrong 133bbbe775eSNeil Armstrong static bool meson_vpu_has_available_connectors(struct device *dev) 134bbbe775eSNeil Armstrong { 135bbbe775eSNeil Armstrong struct device_node *ep, *remote; 136bbbe775eSNeil Armstrong 137bbbe775eSNeil Armstrong /* Parses each endpoint and check if remote exists */ 138bbbe775eSNeil Armstrong for_each_endpoint_of_node(dev->of_node, ep) { 139bbbe775eSNeil Armstrong /* If the endpoint node exists, consider it enabled */ 140bbbe775eSNeil Armstrong remote = of_graph_get_remote_port(ep); 141bbbe775eSNeil Armstrong if (remote) 142bbbe775eSNeil Armstrong return true; 143bbbe775eSNeil Armstrong } 144bbbe775eSNeil Armstrong 145bbbe775eSNeil Armstrong return false; 146bbbe775eSNeil Armstrong } 147bbbe775eSNeil Armstrong 148bbbe775eSNeil Armstrong static struct regmap_config meson_regmap_config = { 149bbbe775eSNeil Armstrong .reg_bits = 32, 150bbbe775eSNeil Armstrong .val_bits = 32, 151bbbe775eSNeil Armstrong .reg_stride = 4, 152bbbe775eSNeil Armstrong .max_register = 0x1000, 153bbbe775eSNeil Armstrong }; 154bbbe775eSNeil Armstrong 1558604889fSNeil Armstrong static int meson_drv_bind_master(struct device *dev, bool has_components) 156bbbe775eSNeil Armstrong { 157a41e82e6SNeil Armstrong struct platform_device *pdev = to_platform_device(dev); 158bbbe775eSNeil Armstrong struct meson_drm *priv; 159bbbe775eSNeil Armstrong struct drm_device *drm; 160bbbe775eSNeil Armstrong struct resource *res; 161bbbe775eSNeil Armstrong void __iomem *regs; 162bbbe775eSNeil Armstrong int ret; 163bbbe775eSNeil Armstrong 164bbbe775eSNeil Armstrong /* Checks if an output connector is available */ 165bbbe775eSNeil Armstrong if (!meson_vpu_has_available_connectors(dev)) { 166bbbe775eSNeil Armstrong dev_err(dev, "No output connector available\n"); 167bbbe775eSNeil Armstrong return -ENODEV; 168bbbe775eSNeil Armstrong } 169bbbe775eSNeil Armstrong 170bbbe775eSNeil Armstrong drm = drm_dev_alloc(&meson_driver, dev); 171bbbe775eSNeil Armstrong if (IS_ERR(drm)) 172bbbe775eSNeil Armstrong return PTR_ERR(drm); 173bbbe775eSNeil Armstrong 174bbbe775eSNeil Armstrong priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 175bbbe775eSNeil Armstrong if (!priv) { 176bbbe775eSNeil Armstrong ret = -ENOMEM; 177bbbe775eSNeil Armstrong goto free_drm; 178bbbe775eSNeil Armstrong } 179bbbe775eSNeil Armstrong drm->dev_private = priv; 180bbbe775eSNeil Armstrong priv->drm = drm; 181bbbe775eSNeil Armstrong priv->dev = dev; 182bbbe775eSNeil Armstrong 183bbbe775eSNeil Armstrong res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu"); 184bbbe775eSNeil Armstrong regs = devm_ioremap_resource(dev, res); 185bbbe775eSNeil Armstrong if (IS_ERR(regs)) 186bbbe775eSNeil Armstrong return PTR_ERR(regs); 187bbbe775eSNeil Armstrong 188bbbe775eSNeil Armstrong priv->io_base = regs; 189bbbe775eSNeil Armstrong 190bbbe775eSNeil Armstrong res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi"); 191bbbe775eSNeil Armstrong /* Simply ioremap since it may be a shared register zone */ 192bbbe775eSNeil Armstrong regs = devm_ioremap(dev, res->start, resource_size(res)); 193bbbe775eSNeil Armstrong if (!regs) 194bbbe775eSNeil Armstrong return -EADDRNOTAVAIL; 195bbbe775eSNeil Armstrong 196bbbe775eSNeil Armstrong priv->hhi = devm_regmap_init_mmio(dev, regs, 197bbbe775eSNeil Armstrong &meson_regmap_config); 198bbbe775eSNeil Armstrong if (IS_ERR(priv->hhi)) { 199bbbe775eSNeil Armstrong dev_err(&pdev->dev, "Couldn't create the HHI regmap\n"); 200bbbe775eSNeil Armstrong return PTR_ERR(priv->hhi); 201bbbe775eSNeil Armstrong } 202bbbe775eSNeil Armstrong 203bbbe775eSNeil Armstrong res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc"); 204bbbe775eSNeil Armstrong /* Simply ioremap since it may be a shared register zone */ 205bbbe775eSNeil Armstrong regs = devm_ioremap(dev, res->start, resource_size(res)); 206bbbe775eSNeil Armstrong if (!regs) 207bbbe775eSNeil Armstrong return -EADDRNOTAVAIL; 208bbbe775eSNeil Armstrong 209bbbe775eSNeil Armstrong priv->dmc = devm_regmap_init_mmio(dev, regs, 210bbbe775eSNeil Armstrong &meson_regmap_config); 211bbbe775eSNeil Armstrong if (IS_ERR(priv->dmc)) { 212bbbe775eSNeil Armstrong dev_err(&pdev->dev, "Couldn't create the DMC regmap\n"); 213bbbe775eSNeil Armstrong return PTR_ERR(priv->dmc); 214bbbe775eSNeil Armstrong } 215bbbe775eSNeil Armstrong 216bbbe775eSNeil Armstrong priv->vsync_irq = platform_get_irq(pdev, 0); 217bbbe775eSNeil Armstrong 218bbbe775eSNeil Armstrong drm_vblank_init(drm, 1); 219bbbe775eSNeil Armstrong drm_mode_config_init(drm); 220a41e82e6SNeil Armstrong drm->mode_config.max_width = 3840; 221a41e82e6SNeil Armstrong drm->mode_config.max_height = 2160; 222a41e82e6SNeil Armstrong drm->mode_config.funcs = &meson_mode_config_funcs; 223a41e82e6SNeil Armstrong 224a41e82e6SNeil Armstrong /* Hardware Initialization */ 225a41e82e6SNeil Armstrong 226a41e82e6SNeil Armstrong meson_venc_init(priv); 227a41e82e6SNeil Armstrong meson_vpp_init(priv); 228a41e82e6SNeil Armstrong meson_viu_init(priv); 229bbbe775eSNeil Armstrong 230bbbe775eSNeil Armstrong /* Encoder Initialization */ 231bbbe775eSNeil Armstrong 232bbbe775eSNeil Armstrong ret = meson_venc_cvbs_create(priv); 233bbbe775eSNeil Armstrong if (ret) 234bbbe775eSNeil Armstrong goto free_drm; 235bbbe775eSNeil Armstrong 2368604889fSNeil Armstrong if (has_components) { 237a41e82e6SNeil Armstrong ret = component_bind_all(drm->dev, drm); 238a41e82e6SNeil Armstrong if (ret) { 239a41e82e6SNeil Armstrong dev_err(drm->dev, "Couldn't bind all components\n"); 240a41e82e6SNeil Armstrong goto free_drm; 241a41e82e6SNeil Armstrong } 2428604889fSNeil Armstrong } 243bbbe775eSNeil Armstrong 244bbbe775eSNeil Armstrong ret = meson_plane_create(priv); 245bbbe775eSNeil Armstrong if (ret) 246bbbe775eSNeil Armstrong goto free_drm; 247bbbe775eSNeil Armstrong 248bbbe775eSNeil Armstrong ret = meson_crtc_create(priv); 249bbbe775eSNeil Armstrong if (ret) 250bbbe775eSNeil Armstrong goto free_drm; 251bbbe775eSNeil Armstrong 252bbbe775eSNeil Armstrong ret = drm_irq_install(drm, priv->vsync_irq); 253bbbe775eSNeil Armstrong if (ret) 254bbbe775eSNeil Armstrong goto free_drm; 255bbbe775eSNeil Armstrong 256bbbe775eSNeil Armstrong drm_mode_config_reset(drm); 257bbbe775eSNeil Armstrong 258bbbe775eSNeil Armstrong priv->fbdev = drm_fbdev_cma_init(drm, 32, 259bbbe775eSNeil Armstrong drm->mode_config.num_connector); 260bbbe775eSNeil Armstrong if (IS_ERR(priv->fbdev)) { 261bbbe775eSNeil Armstrong ret = PTR_ERR(priv->fbdev); 262bbbe775eSNeil Armstrong goto free_drm; 263bbbe775eSNeil Armstrong } 264bbbe775eSNeil Armstrong 265bbbe775eSNeil Armstrong drm_kms_helper_poll_init(drm); 266bbbe775eSNeil Armstrong 267bbbe775eSNeil Armstrong platform_set_drvdata(pdev, priv); 268bbbe775eSNeil Armstrong 269bbbe775eSNeil Armstrong ret = drm_dev_register(drm, 0); 270bbbe775eSNeil Armstrong if (ret) 271bbbe775eSNeil Armstrong goto free_drm; 272bbbe775eSNeil Armstrong 273bbbe775eSNeil Armstrong return 0; 274bbbe775eSNeil Armstrong 275bbbe775eSNeil Armstrong free_drm: 276bbbe775eSNeil Armstrong drm_dev_unref(drm); 277bbbe775eSNeil Armstrong 278bbbe775eSNeil Armstrong return ret; 279bbbe775eSNeil Armstrong } 280bbbe775eSNeil Armstrong 2818604889fSNeil Armstrong static int meson_drv_bind(struct device *dev) 2828604889fSNeil Armstrong { 2838604889fSNeil Armstrong return meson_drv_bind_master(dev, true); 2848604889fSNeil Armstrong } 2858604889fSNeil Armstrong 286a41e82e6SNeil Armstrong static void meson_drv_unbind(struct device *dev) 287bbbe775eSNeil Armstrong { 288a41e82e6SNeil Armstrong struct drm_device *drm = dev_get_drvdata(dev); 289bbbe775eSNeil Armstrong struct meson_drm *priv = drm->dev_private; 290bbbe775eSNeil Armstrong 291bbbe775eSNeil Armstrong drm_dev_unregister(drm); 292bbbe775eSNeil Armstrong drm_kms_helper_poll_fini(drm); 293bbbe775eSNeil Armstrong drm_fbdev_cma_fini(priv->fbdev); 294bbbe775eSNeil Armstrong drm_mode_config_cleanup(drm); 295bbbe775eSNeil Armstrong drm_dev_unref(drm); 296bbbe775eSNeil Armstrong 297bbbe775eSNeil Armstrong } 298bbbe775eSNeil Armstrong 299a41e82e6SNeil Armstrong static const struct component_master_ops meson_drv_master_ops = { 300a41e82e6SNeil Armstrong .bind = meson_drv_bind, 301a41e82e6SNeil Armstrong .unbind = meson_drv_unbind, 302a41e82e6SNeil Armstrong }; 303a41e82e6SNeil Armstrong 304a41e82e6SNeil Armstrong static int compare_of(struct device *dev, void *data) 305a41e82e6SNeil Armstrong { 3064bf99144SRob Herring DRM_DEBUG_DRIVER("Comparing of node %pOF with %pOF\n", 3074bf99144SRob Herring dev->of_node, data); 308a41e82e6SNeil Armstrong 309a41e82e6SNeil Armstrong return dev->of_node == data; 310a41e82e6SNeil Armstrong } 311a41e82e6SNeil Armstrong 312a41e82e6SNeil Armstrong /* Possible connectors nodes to ignore */ 313a41e82e6SNeil Armstrong static const struct of_device_id connectors_match[] = { 314a41e82e6SNeil Armstrong { .compatible = "composite-video-connector" }, 315a41e82e6SNeil Armstrong { .compatible = "svideo-connector" }, 316a41e82e6SNeil Armstrong { .compatible = "hdmi-connector" }, 317a41e82e6SNeil Armstrong { .compatible = "dvi-connector" }, 318a41e82e6SNeil Armstrong {} 319a41e82e6SNeil Armstrong }; 320a41e82e6SNeil Armstrong 321a41e82e6SNeil Armstrong static int meson_probe_remote(struct platform_device *pdev, 322a41e82e6SNeil Armstrong struct component_match **match, 323a41e82e6SNeil Armstrong struct device_node *parent, 324a41e82e6SNeil Armstrong struct device_node *remote) 325a41e82e6SNeil Armstrong { 326a41e82e6SNeil Armstrong struct device_node *ep, *remote_node; 327a41e82e6SNeil Armstrong int count = 1; 328a41e82e6SNeil Armstrong 329a41e82e6SNeil Armstrong /* If node is a connector, return and do not add to match table */ 330a41e82e6SNeil Armstrong if (of_match_node(connectors_match, remote)) 331a41e82e6SNeil Armstrong return 1; 332a41e82e6SNeil Armstrong 333a41e82e6SNeil Armstrong component_match_add(&pdev->dev, match, compare_of, remote); 334a41e82e6SNeil Armstrong 335a41e82e6SNeil Armstrong for_each_endpoint_of_node(remote, ep) { 336a41e82e6SNeil Armstrong remote_node = of_graph_get_remote_port_parent(ep); 337a41e82e6SNeil Armstrong if (!remote_node || 338a41e82e6SNeil Armstrong remote_node == parent || /* Ignore parent endpoint */ 339a41e82e6SNeil Armstrong !of_device_is_available(remote_node)) 340a41e82e6SNeil Armstrong continue; 341a41e82e6SNeil Armstrong 342a41e82e6SNeil Armstrong count += meson_probe_remote(pdev, match, remote, remote_node); 343a41e82e6SNeil Armstrong 344a41e82e6SNeil Armstrong of_node_put(remote_node); 345a41e82e6SNeil Armstrong } 346a41e82e6SNeil Armstrong 347a41e82e6SNeil Armstrong return count; 348a41e82e6SNeil Armstrong } 349a41e82e6SNeil Armstrong 350a41e82e6SNeil Armstrong static int meson_drv_probe(struct platform_device *pdev) 351a41e82e6SNeil Armstrong { 352a41e82e6SNeil Armstrong struct component_match *match = NULL; 353a41e82e6SNeil Armstrong struct device_node *np = pdev->dev.of_node; 354a41e82e6SNeil Armstrong struct device_node *ep, *remote; 355a41e82e6SNeil Armstrong int count = 0; 356a41e82e6SNeil Armstrong 357a41e82e6SNeil Armstrong for_each_endpoint_of_node(np, ep) { 358a41e82e6SNeil Armstrong remote = of_graph_get_remote_port_parent(ep); 359a41e82e6SNeil Armstrong if (!remote || !of_device_is_available(remote)) 360a41e82e6SNeil Armstrong continue; 361a41e82e6SNeil Armstrong 362a41e82e6SNeil Armstrong count += meson_probe_remote(pdev, &match, np, remote); 363a41e82e6SNeil Armstrong } 364a41e82e6SNeil Armstrong 3658604889fSNeil Armstrong if (count && !match) 3668604889fSNeil Armstrong return meson_drv_bind_master(&pdev->dev, false); 3678604889fSNeil Armstrong 368a41e82e6SNeil Armstrong /* If some endpoints were found, initialize the nodes */ 369a41e82e6SNeil Armstrong if (count) { 370a41e82e6SNeil Armstrong dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count); 371a41e82e6SNeil Armstrong 372a41e82e6SNeil Armstrong return component_master_add_with_match(&pdev->dev, 373a41e82e6SNeil Armstrong &meson_drv_master_ops, 374a41e82e6SNeil Armstrong match); 375a41e82e6SNeil Armstrong } 376a41e82e6SNeil Armstrong 377a41e82e6SNeil Armstrong /* If no output endpoints were available, simply bail out */ 378a41e82e6SNeil Armstrong return 0; 379a41e82e6SNeil Armstrong }; 380a41e82e6SNeil Armstrong 381bbbe775eSNeil Armstrong static const struct of_device_id dt_match[] = { 382bbbe775eSNeil Armstrong { .compatible = "amlogic,meson-gxbb-vpu" }, 383bbbe775eSNeil Armstrong { .compatible = "amlogic,meson-gxl-vpu" }, 384bbbe775eSNeil Armstrong { .compatible = "amlogic,meson-gxm-vpu" }, 385bbbe775eSNeil Armstrong {} 386bbbe775eSNeil Armstrong }; 387bbbe775eSNeil Armstrong MODULE_DEVICE_TABLE(of, dt_match); 388bbbe775eSNeil Armstrong 389bbbe775eSNeil Armstrong static struct platform_driver meson_drm_platform_driver = { 390bbbe775eSNeil Armstrong .probe = meson_drv_probe, 391bbbe775eSNeil Armstrong .driver = { 3928aaacbc0SNeil Armstrong .name = "meson-drm", 393bbbe775eSNeil Armstrong .of_match_table = dt_match, 394bbbe775eSNeil Armstrong }, 395bbbe775eSNeil Armstrong }; 396bbbe775eSNeil Armstrong 397bbbe775eSNeil Armstrong module_platform_driver(meson_drm_platform_driver); 398bbbe775eSNeil Armstrong 399bbbe775eSNeil Armstrong MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>"); 400bbbe775eSNeil Armstrong MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); 401bbbe775eSNeil Armstrong MODULE_DESCRIPTION(DRIVER_DESC); 402bbbe775eSNeil Armstrong MODULE_LICENSE("GPL"); 403