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> 27bbbe775eSNeil Armstrong #include <linux/of_graph.h> 28bbbe775eSNeil Armstrong 29bbbe775eSNeil Armstrong #include <drm/drmP.h> 30bbbe775eSNeil Armstrong #include <drm/drm_atomic.h> 31bbbe775eSNeil Armstrong #include <drm/drm_atomic_helper.h> 32bbbe775eSNeil Armstrong #include <drm/drm_flip_work.h> 33bbbe775eSNeil Armstrong #include <drm/drm_crtc_helper.h> 34bbbe775eSNeil Armstrong #include <drm/drm_plane_helper.h> 35bbbe775eSNeil Armstrong #include <drm/drm_gem_cma_helper.h> 36bbbe775eSNeil Armstrong #include <drm/drm_fb_cma_helper.h> 37bbbe775eSNeil Armstrong #include <drm/drm_rect.h> 38bbbe775eSNeil Armstrong #include <drm/drm_fb_helper.h> 39bbbe775eSNeil Armstrong 40bbbe775eSNeil Armstrong #include "meson_drv.h" 41bbbe775eSNeil Armstrong #include "meson_plane.h" 42bbbe775eSNeil Armstrong #include "meson_crtc.h" 43bbbe775eSNeil Armstrong #include "meson_venc_cvbs.h" 44bbbe775eSNeil Armstrong 45bbbe775eSNeil Armstrong #include "meson_vpp.h" 46bbbe775eSNeil Armstrong #include "meson_viu.h" 47bbbe775eSNeil Armstrong #include "meson_venc.h" 48bbbe775eSNeil Armstrong #include "meson_canvas.h" 49bbbe775eSNeil Armstrong #include "meson_registers.h" 50bbbe775eSNeil Armstrong 51bbbe775eSNeil Armstrong #define DRIVER_NAME "meson" 52bbbe775eSNeil Armstrong #define DRIVER_DESC "Amlogic Meson DRM driver" 53bbbe775eSNeil Armstrong 54bbbe775eSNeil Armstrong /* 55bbbe775eSNeil Armstrong * Video Processing Unit 56bbbe775eSNeil Armstrong * 57bbbe775eSNeil Armstrong * VPU Handles the Global Video Processing, it includes management of the 58bbbe775eSNeil Armstrong * clocks gates, blocks reset lines and power domains. 59bbbe775eSNeil Armstrong * 60bbbe775eSNeil Armstrong * What is missing : 61bbbe775eSNeil Armstrong * - Full reset of entire video processing HW blocks 62bbbe775eSNeil Armstrong * - Scaling and setup of the VPU clock 63bbbe775eSNeil Armstrong * - Bus clock gates 64bbbe775eSNeil Armstrong * - Powering up video processing HW blocks 65bbbe775eSNeil Armstrong * - Powering Up HDMI controller and PHY 66bbbe775eSNeil Armstrong */ 67bbbe775eSNeil Armstrong 68bbbe775eSNeil Armstrong static void meson_fb_output_poll_changed(struct drm_device *dev) 69bbbe775eSNeil Armstrong { 70bbbe775eSNeil Armstrong struct meson_drm *priv = dev->dev_private; 71bbbe775eSNeil Armstrong 72bbbe775eSNeil Armstrong drm_fbdev_cma_hotplug_event(priv->fbdev); 73bbbe775eSNeil Armstrong } 74bbbe775eSNeil Armstrong 75bbbe775eSNeil Armstrong static const struct drm_mode_config_funcs meson_mode_config_funcs = { 76bbbe775eSNeil Armstrong .output_poll_changed = meson_fb_output_poll_changed, 77bbbe775eSNeil Armstrong .atomic_check = drm_atomic_helper_check, 78bbbe775eSNeil Armstrong .atomic_commit = drm_atomic_helper_commit, 79bbbe775eSNeil Armstrong .fb_create = drm_fb_cma_create, 80bbbe775eSNeil Armstrong }; 81bbbe775eSNeil Armstrong 82bbbe775eSNeil Armstrong static irqreturn_t meson_irq(int irq, void *arg) 83bbbe775eSNeil Armstrong { 84bbbe775eSNeil Armstrong struct drm_device *dev = arg; 85bbbe775eSNeil Armstrong struct meson_drm *priv = dev->dev_private; 86bbbe775eSNeil Armstrong 87bbbe775eSNeil Armstrong (void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG)); 88bbbe775eSNeil Armstrong 89bbbe775eSNeil Armstrong meson_crtc_irq(priv); 90bbbe775eSNeil Armstrong 91bbbe775eSNeil Armstrong return IRQ_HANDLED; 92bbbe775eSNeil Armstrong } 93bbbe775eSNeil Armstrong 94d55f7e5dSDaniel Vetter DEFINE_DRM_GEM_CMA_FOPS(fops); 95bbbe775eSNeil Armstrong 96bbbe775eSNeil Armstrong static struct drm_driver meson_driver = { 97bbbe775eSNeil Armstrong .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | 98bbbe775eSNeil Armstrong DRIVER_MODESET | DRIVER_PRIME | 99bbbe775eSNeil Armstrong DRIVER_ATOMIC, 100bbbe775eSNeil Armstrong 101bbbe775eSNeil Armstrong /* IRQ */ 102bbbe775eSNeil Armstrong .irq_handler = meson_irq, 103bbbe775eSNeil Armstrong 104bbbe775eSNeil Armstrong /* PRIME Ops */ 105bbbe775eSNeil Armstrong .prime_handle_to_fd = drm_gem_prime_handle_to_fd, 106bbbe775eSNeil Armstrong .prime_fd_to_handle = drm_gem_prime_fd_to_handle, 107bbbe775eSNeil Armstrong .gem_prime_import = drm_gem_prime_import, 108bbbe775eSNeil Armstrong .gem_prime_export = drm_gem_prime_export, 109bbbe775eSNeil Armstrong .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, 110bbbe775eSNeil Armstrong .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, 111bbbe775eSNeil Armstrong .gem_prime_vmap = drm_gem_cma_prime_vmap, 112bbbe775eSNeil Armstrong .gem_prime_vunmap = drm_gem_cma_prime_vunmap, 113bbbe775eSNeil Armstrong .gem_prime_mmap = drm_gem_cma_prime_mmap, 114bbbe775eSNeil Armstrong 115bbbe775eSNeil Armstrong /* GEM Ops */ 116bbbe775eSNeil Armstrong .dumb_create = drm_gem_cma_dumb_create, 117bbbe775eSNeil Armstrong .dumb_destroy = drm_gem_dumb_destroy, 118bbbe775eSNeil Armstrong .dumb_map_offset = drm_gem_cma_dumb_map_offset, 119bbbe775eSNeil Armstrong .gem_free_object_unlocked = drm_gem_cma_free_object, 120bbbe775eSNeil Armstrong .gem_vm_ops = &drm_gem_cma_vm_ops, 121bbbe775eSNeil Armstrong 122bbbe775eSNeil Armstrong /* Misc */ 123bbbe775eSNeil Armstrong .fops = &fops, 124bbbe775eSNeil Armstrong .name = DRIVER_NAME, 125bbbe775eSNeil Armstrong .desc = DRIVER_DESC, 126bbbe775eSNeil Armstrong .date = "20161109", 127bbbe775eSNeil Armstrong .major = 1, 128bbbe775eSNeil Armstrong .minor = 0, 129bbbe775eSNeil Armstrong }; 130bbbe775eSNeil Armstrong 131bbbe775eSNeil Armstrong static bool meson_vpu_has_available_connectors(struct device *dev) 132bbbe775eSNeil Armstrong { 133bbbe775eSNeil Armstrong struct device_node *ep, *remote; 134bbbe775eSNeil Armstrong 135bbbe775eSNeil Armstrong /* Parses each endpoint and check if remote exists */ 136bbbe775eSNeil Armstrong for_each_endpoint_of_node(dev->of_node, ep) { 137bbbe775eSNeil Armstrong /* If the endpoint node exists, consider it enabled */ 138bbbe775eSNeil Armstrong remote = of_graph_get_remote_port(ep); 139bbbe775eSNeil Armstrong if (remote) 140bbbe775eSNeil Armstrong return true; 141bbbe775eSNeil Armstrong } 142bbbe775eSNeil Armstrong 143bbbe775eSNeil Armstrong return false; 144bbbe775eSNeil Armstrong } 145bbbe775eSNeil Armstrong 146bbbe775eSNeil Armstrong static struct regmap_config meson_regmap_config = { 147bbbe775eSNeil Armstrong .reg_bits = 32, 148bbbe775eSNeil Armstrong .val_bits = 32, 149bbbe775eSNeil Armstrong .reg_stride = 4, 150bbbe775eSNeil Armstrong .max_register = 0x1000, 151bbbe775eSNeil Armstrong }; 152bbbe775eSNeil Armstrong 153bbbe775eSNeil Armstrong static int meson_drv_probe(struct platform_device *pdev) 154bbbe775eSNeil Armstrong { 155bbbe775eSNeil Armstrong struct device *dev = &pdev->dev; 156bbbe775eSNeil Armstrong struct meson_drm *priv; 157bbbe775eSNeil Armstrong struct drm_device *drm; 158bbbe775eSNeil Armstrong struct resource *res; 159bbbe775eSNeil Armstrong void __iomem *regs; 160bbbe775eSNeil Armstrong int ret; 161bbbe775eSNeil Armstrong 162bbbe775eSNeil Armstrong /* Checks if an output connector is available */ 163bbbe775eSNeil Armstrong if (!meson_vpu_has_available_connectors(dev)) { 164bbbe775eSNeil Armstrong dev_err(dev, "No output connector available\n"); 165bbbe775eSNeil Armstrong return -ENODEV; 166bbbe775eSNeil Armstrong } 167bbbe775eSNeil Armstrong 168bbbe775eSNeil Armstrong drm = drm_dev_alloc(&meson_driver, dev); 169bbbe775eSNeil Armstrong if (IS_ERR(drm)) 170bbbe775eSNeil Armstrong return PTR_ERR(drm); 171bbbe775eSNeil Armstrong 172bbbe775eSNeil Armstrong priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 173bbbe775eSNeil Armstrong if (!priv) { 174bbbe775eSNeil Armstrong ret = -ENOMEM; 175bbbe775eSNeil Armstrong goto free_drm; 176bbbe775eSNeil Armstrong } 177bbbe775eSNeil Armstrong drm->dev_private = priv; 178bbbe775eSNeil Armstrong priv->drm = drm; 179bbbe775eSNeil Armstrong priv->dev = dev; 180bbbe775eSNeil Armstrong 181bbbe775eSNeil Armstrong res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu"); 182bbbe775eSNeil Armstrong regs = devm_ioremap_resource(dev, res); 183bbbe775eSNeil Armstrong if (IS_ERR(regs)) 184bbbe775eSNeil Armstrong return PTR_ERR(regs); 185bbbe775eSNeil Armstrong 186bbbe775eSNeil Armstrong priv->io_base = regs; 187bbbe775eSNeil Armstrong 188bbbe775eSNeil Armstrong res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi"); 189bbbe775eSNeil Armstrong /* Simply ioremap since it may be a shared register zone */ 190bbbe775eSNeil Armstrong regs = devm_ioremap(dev, res->start, resource_size(res)); 191bbbe775eSNeil Armstrong if (!regs) 192bbbe775eSNeil Armstrong return -EADDRNOTAVAIL; 193bbbe775eSNeil Armstrong 194bbbe775eSNeil Armstrong priv->hhi = devm_regmap_init_mmio(dev, regs, 195bbbe775eSNeil Armstrong &meson_regmap_config); 196bbbe775eSNeil Armstrong if (IS_ERR(priv->hhi)) { 197bbbe775eSNeil Armstrong dev_err(&pdev->dev, "Couldn't create the HHI regmap\n"); 198bbbe775eSNeil Armstrong return PTR_ERR(priv->hhi); 199bbbe775eSNeil Armstrong } 200bbbe775eSNeil Armstrong 201bbbe775eSNeil Armstrong res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc"); 202bbbe775eSNeil Armstrong /* Simply ioremap since it may be a shared register zone */ 203bbbe775eSNeil Armstrong regs = devm_ioremap(dev, res->start, resource_size(res)); 204bbbe775eSNeil Armstrong if (!regs) 205bbbe775eSNeil Armstrong return -EADDRNOTAVAIL; 206bbbe775eSNeil Armstrong 207bbbe775eSNeil Armstrong priv->dmc = devm_regmap_init_mmio(dev, regs, 208bbbe775eSNeil Armstrong &meson_regmap_config); 209bbbe775eSNeil Armstrong if (IS_ERR(priv->dmc)) { 210bbbe775eSNeil Armstrong dev_err(&pdev->dev, "Couldn't create the DMC regmap\n"); 211bbbe775eSNeil Armstrong return PTR_ERR(priv->dmc); 212bbbe775eSNeil Armstrong } 213bbbe775eSNeil Armstrong 214bbbe775eSNeil Armstrong priv->vsync_irq = platform_get_irq(pdev, 0); 215bbbe775eSNeil Armstrong 216bbbe775eSNeil Armstrong drm_vblank_init(drm, 1); 217bbbe775eSNeil Armstrong drm_mode_config_init(drm); 218bbbe775eSNeil Armstrong 219bbbe775eSNeil Armstrong /* Encoder Initialization */ 220bbbe775eSNeil Armstrong 221bbbe775eSNeil Armstrong ret = meson_venc_cvbs_create(priv); 222bbbe775eSNeil Armstrong if (ret) 223bbbe775eSNeil Armstrong goto free_drm; 224bbbe775eSNeil Armstrong 225bbbe775eSNeil Armstrong /* Hardware Initialization */ 226bbbe775eSNeil Armstrong 227bbbe775eSNeil Armstrong meson_venc_init(priv); 228bbbe775eSNeil Armstrong meson_vpp_init(priv); 229bbbe775eSNeil Armstrong meson_viu_init(priv); 230bbbe775eSNeil Armstrong 231bbbe775eSNeil Armstrong ret = meson_plane_create(priv); 232bbbe775eSNeil Armstrong if (ret) 233bbbe775eSNeil Armstrong goto free_drm; 234bbbe775eSNeil Armstrong 235bbbe775eSNeil Armstrong ret = meson_crtc_create(priv); 236bbbe775eSNeil Armstrong if (ret) 237bbbe775eSNeil Armstrong goto free_drm; 238bbbe775eSNeil Armstrong 239bbbe775eSNeil Armstrong ret = drm_irq_install(drm, priv->vsync_irq); 240bbbe775eSNeil Armstrong if (ret) 241bbbe775eSNeil Armstrong goto free_drm; 242bbbe775eSNeil Armstrong 243bbbe775eSNeil Armstrong drm_mode_config_reset(drm); 244bbbe775eSNeil Armstrong drm->mode_config.max_width = 8192; 245bbbe775eSNeil Armstrong drm->mode_config.max_height = 8192; 246bbbe775eSNeil Armstrong drm->mode_config.funcs = &meson_mode_config_funcs; 247bbbe775eSNeil Armstrong 248bbbe775eSNeil Armstrong priv->fbdev = drm_fbdev_cma_init(drm, 32, 249bbbe775eSNeil Armstrong drm->mode_config.num_connector); 250bbbe775eSNeil Armstrong if (IS_ERR(priv->fbdev)) { 251bbbe775eSNeil Armstrong ret = PTR_ERR(priv->fbdev); 252bbbe775eSNeil Armstrong goto free_drm; 253bbbe775eSNeil Armstrong } 254bbbe775eSNeil Armstrong 255bbbe775eSNeil Armstrong drm_kms_helper_poll_init(drm); 256bbbe775eSNeil Armstrong 257bbbe775eSNeil Armstrong platform_set_drvdata(pdev, priv); 258bbbe775eSNeil Armstrong 259bbbe775eSNeil Armstrong ret = drm_dev_register(drm, 0); 260bbbe775eSNeil Armstrong if (ret) 261bbbe775eSNeil Armstrong goto free_drm; 262bbbe775eSNeil Armstrong 263bbbe775eSNeil Armstrong return 0; 264bbbe775eSNeil Armstrong 265bbbe775eSNeil Armstrong free_drm: 266bbbe775eSNeil Armstrong drm_dev_unref(drm); 267bbbe775eSNeil Armstrong 268bbbe775eSNeil Armstrong return ret; 269bbbe775eSNeil Armstrong } 270bbbe775eSNeil Armstrong 271bbbe775eSNeil Armstrong static int meson_drv_remove(struct platform_device *pdev) 272bbbe775eSNeil Armstrong { 273bbbe775eSNeil Armstrong struct drm_device *drm = dev_get_drvdata(&pdev->dev); 274bbbe775eSNeil Armstrong struct meson_drm *priv = drm->dev_private; 275bbbe775eSNeil Armstrong 276bbbe775eSNeil Armstrong drm_dev_unregister(drm); 277bbbe775eSNeil Armstrong drm_kms_helper_poll_fini(drm); 278bbbe775eSNeil Armstrong drm_fbdev_cma_fini(priv->fbdev); 279bbbe775eSNeil Armstrong drm_mode_config_cleanup(drm); 280bbbe775eSNeil Armstrong drm_vblank_cleanup(drm); 281bbbe775eSNeil Armstrong drm_dev_unref(drm); 282bbbe775eSNeil Armstrong 283bbbe775eSNeil Armstrong return 0; 284bbbe775eSNeil Armstrong } 285bbbe775eSNeil Armstrong 286bbbe775eSNeil Armstrong static const struct of_device_id dt_match[] = { 287bbbe775eSNeil Armstrong { .compatible = "amlogic,meson-gxbb-vpu" }, 288bbbe775eSNeil Armstrong { .compatible = "amlogic,meson-gxl-vpu" }, 289bbbe775eSNeil Armstrong { .compatible = "amlogic,meson-gxm-vpu" }, 290bbbe775eSNeil Armstrong {} 291bbbe775eSNeil Armstrong }; 292bbbe775eSNeil Armstrong MODULE_DEVICE_TABLE(of, dt_match); 293bbbe775eSNeil Armstrong 294bbbe775eSNeil Armstrong static struct platform_driver meson_drm_platform_driver = { 295bbbe775eSNeil Armstrong .probe = meson_drv_probe, 296bbbe775eSNeil Armstrong .remove = meson_drv_remove, 297bbbe775eSNeil Armstrong .driver = { 2988aaacbc0SNeil Armstrong .name = "meson-drm", 299bbbe775eSNeil Armstrong .of_match_table = dt_match, 300bbbe775eSNeil Armstrong }, 301bbbe775eSNeil Armstrong }; 302bbbe775eSNeil Armstrong 303bbbe775eSNeil Armstrong module_platform_driver(meson_drm_platform_driver); 304bbbe775eSNeil Armstrong 305bbbe775eSNeil Armstrong MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>"); 306bbbe775eSNeil Armstrong MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); 307bbbe775eSNeil Armstrong MODULE_DESCRIPTION(DRIVER_DESC); 308bbbe775eSNeil Armstrong MODULE_LICENSE("GPL"); 309