288 lines
6.9 KiB
C
288 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2012 Russell King
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*/
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/module.h>
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#include <linux/of_graph.h>
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#include <linux/platform_device.h>
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#include <drm/drm_aperture.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_prime.h>
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#include <drm/drm_probe_helper.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_of.h>
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#include <drm/drm_vblank.h>
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#include "armada_crtc.h"
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#include "armada_drm.h"
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#include "armada_gem.h"
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#include "armada_fb.h"
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#include "armada_hw.h"
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#include <drm/armada_drm.h>
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#include "armada_ioctlP.h"
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static const struct drm_ioctl_desc armada_ioctls[] = {
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DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,0),
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DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, 0),
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DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, 0),
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};
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DEFINE_DRM_GEM_FOPS(armada_drm_fops);
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static const struct drm_driver armada_drm_driver = {
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.lastclose = drm_fb_helper_lastclose,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_import = armada_gem_prime_import,
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.dumb_create = armada_gem_dumb_create,
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.major = 1,
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.minor = 0,
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.name = "armada-drm",
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.desc = "Armada SoC DRM",
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.date = "20120730",
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
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.ioctls = armada_ioctls,
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.num_ioctls = ARRAY_SIZE(armada_ioctls),
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.fops = &armada_drm_fops,
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};
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static const struct drm_mode_config_funcs armada_drm_mode_config_funcs = {
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.fb_create = armada_fb_create,
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.output_poll_changed = drm_fb_helper_output_poll_changed,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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static int armada_drm_bind(struct device *dev)
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{
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struct armada_private *priv;
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struct resource *mem = NULL;
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int ret, n;
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for (n = 0; ; n++) {
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struct resource *r = platform_get_resource(to_platform_device(dev),
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IORESOURCE_MEM, n);
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if (!r)
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break;
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/* Resources above 64K are graphics memory */
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if (resource_size(r) > SZ_64K)
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mem = r;
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else
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return -EINVAL;
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}
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if (!mem)
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return -ENXIO;
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if (!devm_request_mem_region(dev, mem->start, resource_size(mem),
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"armada-drm"))
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return -EBUSY;
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priv = devm_drm_dev_alloc(dev, &armada_drm_driver,
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struct armada_private, drm);
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if (IS_ERR(priv)) {
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dev_err(dev, "[" DRM_NAME ":%s] devm_drm_dev_alloc failed: %li\n",
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__func__, PTR_ERR(priv));
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return PTR_ERR(priv);
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}
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/* Remove early framebuffers */
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ret = drm_aperture_remove_framebuffers(&armada_drm_driver);
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if (ret) {
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dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n",
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__func__, ret);
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return ret;
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}
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dev_set_drvdata(dev, &priv->drm);
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/* Mode setting support */
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drm_mode_config_init(&priv->drm);
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priv->drm.mode_config.min_width = 320;
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priv->drm.mode_config.min_height = 200;
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/*
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* With vscale enabled, the maximum width is 1920 due to the
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* 1920 by 3 lines RAM
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*/
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priv->drm.mode_config.max_width = 1920;
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priv->drm.mode_config.max_height = 2048;
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priv->drm.mode_config.preferred_depth = 24;
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priv->drm.mode_config.funcs = &armada_drm_mode_config_funcs;
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drm_mm_init(&priv->linear, mem->start, resource_size(mem));
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mutex_init(&priv->linear_lock);
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ret = component_bind_all(dev, &priv->drm);
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if (ret)
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goto err_kms;
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ret = drm_vblank_init(&priv->drm, priv->drm.mode_config.num_crtc);
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if (ret)
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goto err_comp;
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drm_mode_config_reset(&priv->drm);
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ret = armada_fbdev_init(&priv->drm);
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if (ret)
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goto err_comp;
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drm_kms_helper_poll_init(&priv->drm);
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ret = drm_dev_register(&priv->drm, 0);
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if (ret)
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goto err_poll;
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#ifdef CONFIG_DEBUG_FS
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armada_drm_debugfs_init(priv->drm.primary);
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#endif
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return 0;
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err_poll:
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drm_kms_helper_poll_fini(&priv->drm);
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armada_fbdev_fini(&priv->drm);
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err_comp:
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component_unbind_all(dev, &priv->drm);
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err_kms:
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drm_mode_config_cleanup(&priv->drm);
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drm_mm_takedown(&priv->linear);
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return ret;
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}
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static void armada_drm_unbind(struct device *dev)
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{
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struct drm_device *drm = dev_get_drvdata(dev);
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struct armada_private *priv = drm_to_armada_dev(drm);
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drm_kms_helper_poll_fini(&priv->drm);
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armada_fbdev_fini(&priv->drm);
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drm_dev_unregister(&priv->drm);
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drm_atomic_helper_shutdown(&priv->drm);
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component_unbind_all(dev, &priv->drm);
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drm_mode_config_cleanup(&priv->drm);
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drm_mm_takedown(&priv->linear);
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}
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static void armada_add_endpoints(struct device *dev,
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struct component_match **match, struct device_node *dev_node)
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{
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struct device_node *ep, *remote;
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for_each_endpoint_of_node(dev_node, ep) {
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remote = of_graph_get_remote_port_parent(ep);
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if (remote && of_device_is_available(remote))
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drm_of_component_match_add(dev, match, component_compare_of,
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remote);
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of_node_put(remote);
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}
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}
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static const struct component_master_ops armada_master_ops = {
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.bind = armada_drm_bind,
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.unbind = armada_drm_unbind,
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};
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static int armada_drm_probe(struct platform_device *pdev)
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{
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struct component_match *match = NULL;
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struct device *dev = &pdev->dev;
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int ret;
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ret = drm_of_component_probe(dev, component_compare_dev_name, &armada_master_ops);
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if (ret != -EINVAL)
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return ret;
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if (dev->platform_data) {
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char **devices = dev->platform_data;
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struct device *d;
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int i;
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for (i = 0; devices[i]; i++)
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component_match_add(dev, &match, component_compare_dev_name,
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devices[i]);
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if (i == 0) {
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dev_err(dev, "missing 'ports' property\n");
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return -ENODEV;
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}
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for (i = 0; devices[i]; i++) {
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d = bus_find_device_by_name(&platform_bus_type, NULL,
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devices[i]);
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if (d && d->of_node)
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armada_add_endpoints(dev, &match, d->of_node);
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put_device(d);
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}
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}
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return component_master_add_with_match(&pdev->dev, &armada_master_ops,
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match);
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}
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static int armada_drm_remove(struct platform_device *pdev)
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{
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component_master_del(&pdev->dev, &armada_master_ops);
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return 0;
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}
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static const struct platform_device_id armada_drm_platform_ids[] = {
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{
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.name = "armada-drm",
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}, {
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.name = "armada-510-drm",
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},
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{ },
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};
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MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids);
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static struct platform_driver armada_drm_platform_driver = {
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.probe = armada_drm_probe,
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.remove = armada_drm_remove,
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.driver = {
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.name = "armada-drm",
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},
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.id_table = armada_drm_platform_ids,
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};
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static int __init armada_drm_init(void)
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{
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int ret;
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if (drm_firmware_drivers_only())
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return -ENODEV;
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ret = platform_driver_register(&armada_lcd_platform_driver);
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if (ret)
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return ret;
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ret = platform_driver_register(&armada_drm_platform_driver);
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if (ret)
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platform_driver_unregister(&armada_lcd_platform_driver);
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return ret;
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}
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module_init(armada_drm_init);
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static void __exit armada_drm_exit(void)
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{
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platform_driver_unregister(&armada_drm_platform_driver);
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platform_driver_unregister(&armada_lcd_platform_driver);
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}
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module_exit(armada_drm_exit);
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MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>");
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MODULE_DESCRIPTION("Armada DRM Driver");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:armada-drm");
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