/* * 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 #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" /** * DOC: 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_gem_fb_create, }; static const struct drm_mode_config_helper_funcs meson_mode_config_helpers = { .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, }; 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; } DEFINE_DRM_GEM_CMA_FOPS(fops); 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, .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) { of_node_put(remote); of_node_put(ep); return true; } } return false; } static struct regmap_config meson_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .max_register = 0x1000, }; static void meson_vpu_init(struct meson_drm *priv) { writel_relaxed(0x210000, priv->io_base + _REG(VPU_RDARB_MODE_L1C1)); writel_relaxed(0x10000, priv->io_base + _REG(VPU_RDARB_MODE_L1C2)); writel_relaxed(0x900000, priv->io_base + _REG(VPU_RDARB_MODE_L2C1)); writel_relaxed(0x20000, priv->io_base + _REG(VPU_WRARB_MODE_L2C1)); } static int meson_drv_bind_master(struct device *dev, bool has_components) { struct platform_device *pdev = to_platform_device(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)) { ret = PTR_ERR(regs); goto free_drm; } priv->io_base = regs; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi"); if (!res) { ret = -EINVAL; goto free_drm; } /* Simply ioremap since it may be a shared register zone */ regs = devm_ioremap(dev, res->start, resource_size(res)); if (!regs) { ret = -EADDRNOTAVAIL; goto free_drm; } 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"); ret = PTR_ERR(priv->hhi); goto free_drm; } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc"); if (!res) { ret = -EINVAL; goto free_drm; } /* Simply ioremap since it may be a shared register zone */ regs = devm_ioremap(dev, res->start, resource_size(res)); if (!regs) { ret = -EADDRNOTAVAIL; goto free_drm; } 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"); ret = PTR_ERR(priv->dmc); goto free_drm; } priv->vsync_irq = platform_get_irq(pdev, 0); ret = drm_vblank_init(drm, 1); if (ret) goto free_drm; drm_mode_config_init(drm); drm->mode_config.max_width = 3840; drm->mode_config.max_height = 2160; drm->mode_config.funcs = &meson_mode_config_funcs; drm->mode_config.helper_private = &meson_mode_config_helpers; /* Hardware Initialization */ meson_vpu_init(priv); meson_venc_init(priv); meson_vpp_init(priv); meson_viu_init(priv); /* Encoder Initialization */ ret = meson_venc_cvbs_create(priv); if (ret) goto free_drm; if (has_components) { ret = component_bind_all(drm->dev, drm); if (ret) { dev_err(drm->dev, "Couldn't bind all components\n"); goto free_drm; } } 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); 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 uninstall_irq; return 0; uninstall_irq: drm_irq_uninstall(drm); free_drm: drm_dev_put(drm); return ret; } static int meson_drv_bind(struct device *dev) { return meson_drv_bind_master(dev, true); } static void meson_drv_unbind(struct device *dev) { struct meson_drm *priv = dev_get_drvdata(dev); struct drm_device *drm = priv->drm; drm_dev_unregister(drm); drm_irq_uninstall(drm); drm_kms_helper_poll_fini(drm); drm_fbdev_cma_fini(priv->fbdev); drm_mode_config_cleanup(drm); drm_dev_put(drm); } static const struct component_master_ops meson_drv_master_ops = { .bind = meson_drv_bind, .unbind = meson_drv_unbind, }; static int compare_of(struct device *dev, void *data) { DRM_DEBUG_DRIVER("Comparing of node %pOF with %pOF\n", dev->of_node, data); return dev->of_node == data; } /* Possible connectors nodes to ignore */ static const struct of_device_id connectors_match[] = { { .compatible = "composite-video-connector" }, { .compatible = "svideo-connector" }, { .compatible = "hdmi-connector" }, { .compatible = "dvi-connector" }, {} }; static int meson_probe_remote(struct platform_device *pdev, struct component_match **match, struct device_node *parent, struct device_node *remote) { struct device_node *ep, *remote_node; int count = 1; /* If node is a connector, return and do not add to match table */ if (of_match_node(connectors_match, remote)) return 1; component_match_add(&pdev->dev, match, compare_of, remote); for_each_endpoint_of_node(remote, ep) { remote_node = of_graph_get_remote_port_parent(ep); if (!remote_node || remote_node == parent || /* Ignore parent endpoint */ !of_device_is_available(remote_node)) { of_node_put(remote_node); continue; } count += meson_probe_remote(pdev, match, remote, remote_node); of_node_put(remote_node); } return count; } static void meson_drv_shutdown(struct platform_device *pdev) { struct meson_drm *priv = dev_get_drvdata(&pdev->dev); if (!priv) return; drm_kms_helper_poll_fini(priv->drm); drm_atomic_helper_shutdown(priv->drm); } static int meson_drv_probe(struct platform_device *pdev) { struct component_match *match = NULL; struct device_node *np = pdev->dev.of_node; struct device_node *ep, *remote; int count = 0; for_each_endpoint_of_node(np, ep) { remote = of_graph_get_remote_port_parent(ep); if (!remote || !of_device_is_available(remote)) { of_node_put(remote); continue; } count += meson_probe_remote(pdev, &match, np, remote); of_node_put(remote); } if (count && !match) return meson_drv_bind_master(&pdev->dev, false); /* If some endpoints were found, initialize the nodes */ if (count) { dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count); return component_master_add_with_match(&pdev->dev, &meson_drv_master_ops, match); } /* If no output endpoints were available, simply bail out */ 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, .shutdown = meson_drv_shutdown, .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");