/* * Copyright (C) 2016 BayLibre, SAS * Author: Neil Armstrong * Copyright (C) 2014 Endless Mobile * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * Written by: * Jasper St. Pierre */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "meson_drv.h" #include "meson_plane.h" #include "meson_crtc.h" #include "meson_venc_cvbs.h" #include "meson_vpp.h" #include "meson_viu.h" #include "meson_venc.h" #include "meson_canvas.h" #include "meson_registers.h" #define DRIVER_NAME "meson" #define DRIVER_DESC "Amlogic Meson DRM driver" /* * Video Processing Unit * * VPU Handles the Global Video Processing, it includes management of the * clocks gates, blocks reset lines and power domains. * * What is missing : * - Full reset of entire video processing HW blocks * - Scaling and setup of the VPU clock * - Bus clock gates * - Powering up video processing HW blocks * - Powering Up HDMI controller and PHY */ static void meson_fb_output_poll_changed(struct drm_device *dev) { struct meson_drm *priv = dev->dev_private; drm_fbdev_cma_hotplug_event(priv->fbdev); } static const struct drm_mode_config_funcs meson_mode_config_funcs = { .output_poll_changed = meson_fb_output_poll_changed, .atomic_check = drm_atomic_helper_check, .atomic_commit = drm_atomic_helper_commit, .fb_create = drm_fb_cma_create, }; static irqreturn_t meson_irq(int irq, void *arg) { struct drm_device *dev = arg; struct meson_drm *priv = dev->dev_private; (void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG)); meson_crtc_irq(priv); return IRQ_HANDLED; } static const struct file_operations fops = { .owner = THIS_MODULE, .open = drm_open, .release = drm_release, .unlocked_ioctl = drm_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = drm_compat_ioctl, #endif .poll = drm_poll, .read = drm_read, .llseek = no_llseek, .mmap = drm_gem_cma_mmap, }; static struct drm_driver meson_driver = { .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC, /* IRQ */ .irq_handler = meson_irq, /* PRIME Ops */ .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import = drm_gem_prime_import, .gem_prime_export = drm_gem_prime_export, .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, .gem_prime_vmap = drm_gem_cma_prime_vmap, .gem_prime_vunmap = drm_gem_cma_prime_vunmap, .gem_prime_mmap = drm_gem_cma_prime_mmap, /* GEM Ops */ .dumb_create = drm_gem_cma_dumb_create, .dumb_destroy = drm_gem_dumb_destroy, .dumb_map_offset = drm_gem_cma_dumb_map_offset, .gem_free_object_unlocked = drm_gem_cma_free_object, .gem_vm_ops = &drm_gem_cma_vm_ops, /* Misc */ .fops = &fops, .name = DRIVER_NAME, .desc = DRIVER_DESC, .date = "20161109", .major = 1, .minor = 0, }; static bool meson_vpu_has_available_connectors(struct device *dev) { struct device_node *ep, *remote; /* Parses each endpoint and check if remote exists */ for_each_endpoint_of_node(dev->of_node, ep) { /* If the endpoint node exists, consider it enabled */ remote = of_graph_get_remote_port(ep); if (remote) return true; } return false; } static struct regmap_config meson_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .max_register = 0x1000, }; static int meson_drv_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct meson_drm *priv; struct drm_device *drm; struct resource *res; void __iomem *regs; int ret; /* Checks if an output connector is available */ if (!meson_vpu_has_available_connectors(dev)) { dev_err(dev, "No output connector available\n"); return -ENODEV; } drm = drm_dev_alloc(&meson_driver, dev); if (IS_ERR(drm)) return PTR_ERR(drm); priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) { ret = -ENOMEM; goto free_drm; } drm->dev_private = priv; priv->drm = drm; priv->dev = dev; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu"); regs = devm_ioremap_resource(dev, res); if (IS_ERR(regs)) return PTR_ERR(regs); priv->io_base = regs; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi"); /* Simply ioremap since it may be a shared register zone */ regs = devm_ioremap(dev, res->start, resource_size(res)); if (!regs) return -EADDRNOTAVAIL; priv->hhi = devm_regmap_init_mmio(dev, regs, &meson_regmap_config); if (IS_ERR(priv->hhi)) { dev_err(&pdev->dev, "Couldn't create the HHI regmap\n"); return PTR_ERR(priv->hhi); } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc"); /* Simply ioremap since it may be a shared register zone */ regs = devm_ioremap(dev, res->start, resource_size(res)); if (!regs) return -EADDRNOTAVAIL; priv->dmc = devm_regmap_init_mmio(dev, regs, &meson_regmap_config); if (IS_ERR(priv->dmc)) { dev_err(&pdev->dev, "Couldn't create the DMC regmap\n"); return PTR_ERR(priv->dmc); } priv->vsync_irq = platform_get_irq(pdev, 0); drm_vblank_init(drm, 1); drm_mode_config_init(drm); /* Encoder Initialization */ ret = meson_venc_cvbs_create(priv); if (ret) goto free_drm; /* Hardware Initialization */ meson_venc_init(priv); meson_vpp_init(priv); meson_viu_init(priv); ret = meson_plane_create(priv); if (ret) goto free_drm; ret = meson_crtc_create(priv); if (ret) goto free_drm; ret = drm_irq_install(drm, priv->vsync_irq); if (ret) goto free_drm; drm_mode_config_reset(drm); drm->mode_config.max_width = 8192; drm->mode_config.max_height = 8192; drm->mode_config.funcs = &meson_mode_config_funcs; priv->fbdev = drm_fbdev_cma_init(drm, 32, drm->mode_config.num_connector); if (IS_ERR(priv->fbdev)) { ret = PTR_ERR(priv->fbdev); goto free_drm; } drm_kms_helper_poll_init(drm); platform_set_drvdata(pdev, priv); ret = drm_dev_register(drm, 0); if (ret) goto free_drm; return 0; free_drm: drm_dev_unref(drm); return ret; } static int meson_drv_remove(struct platform_device *pdev) { struct drm_device *drm = dev_get_drvdata(&pdev->dev); struct meson_drm *priv = drm->dev_private; drm_dev_unregister(drm); drm_kms_helper_poll_fini(drm); drm_fbdev_cma_fini(priv->fbdev); drm_mode_config_cleanup(drm); drm_vblank_cleanup(drm); drm_dev_unref(drm); return 0; } static const struct of_device_id dt_match[] = { { .compatible = "amlogic,meson-gxbb-vpu" }, { .compatible = "amlogic,meson-gxl-vpu" }, { .compatible = "amlogic,meson-gxm-vpu" }, {} }; MODULE_DEVICE_TABLE(of, dt_match); static struct platform_driver meson_drm_platform_driver = { .probe = meson_drv_probe, .remove = meson_drv_remove, .driver = { .name = "meson-drm", .of_match_table = dt_match, }, }; module_platform_driver(meson_drm_platform_driver); MODULE_AUTHOR("Jasper St. Pierre "); MODULE_AUTHOR("Neil Armstrong "); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL");