/* * Copyright (C) 2012 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/clk.h> #include <linux/component.h> #include <linux/module.h> #include <linux/of_graph.h> #include <drm/drmP.h> #include <drm/drm_crtc_helper.h> #include "armada_crtc.h" #include "armada_drm.h" #include "armada_gem.h" #include "armada_hw.h" #include <drm/armada_drm.h> #include "armada_ioctlP.h" #ifdef CONFIG_DRM_ARMADA_TDA1998X #include <drm/i2c/tda998x.h> #include "armada_slave.h" static struct tda998x_encoder_params params = { /* With 0x24, there is no translation between vp_out and int_vp FB LCD out Pins VIP Int Vp R:23:16 R:7:0 VPC7:0 7:0 7:0[R] G:15:8 G:15:8 VPB7:0 23:16 23:16[G] B:7:0 B:23:16 VPA7:0 15:8 15:8[B] */ .swap_a = 2, .swap_b = 3, .swap_c = 4, .swap_d = 5, .swap_e = 0, .swap_f = 1, .audio_cfg = BIT(2), .audio_frame[1] = 1, .audio_format = AFMT_SPDIF, .audio_sample_rate = 44100, }; static const struct armada_drm_slave_config tda19988_config = { .i2c_adapter_id = 0, .crtcs = 1 << 0, /* Only LCD0 at the moment */ .polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT, .interlace_allowed = true, .info = { .type = "tda998x", .addr = 0x70, .platform_data = ¶ms, }, }; #endif static bool is_componentized(struct device *dev) { return dev->of_node || dev->platform_data; } static void armada_drm_unref_work(struct work_struct *work) { struct armada_private *priv = container_of(work, struct armada_private, fb_unref_work); struct drm_framebuffer *fb; while (kfifo_get(&priv->fb_unref, &fb)) drm_framebuffer_unreference(fb); } /* Must be called with dev->event_lock held */ void __armada_drm_queue_unref_work(struct drm_device *dev, struct drm_framebuffer *fb) { struct armada_private *priv = dev->dev_private; WARN_ON(!kfifo_put(&priv->fb_unref, fb)); schedule_work(&priv->fb_unref_work); } void armada_drm_queue_unref_work(struct drm_device *dev, struct drm_framebuffer *fb) { unsigned long flags; spin_lock_irqsave(&dev->event_lock, flags); __armada_drm_queue_unref_work(dev, fb); spin_unlock_irqrestore(&dev->event_lock, flags); } static int armada_drm_load(struct drm_device *dev, unsigned long flags) { const struct platform_device_id *id; const struct armada_variant *variant; struct armada_private *priv; struct resource *res[ARRAY_SIZE(priv->dcrtc)]; struct resource *mem = NULL; int ret, n, i; memset(res, 0, sizeof(res)); for (n = i = 0; ; n++) { struct resource *r = platform_get_resource(dev->platformdev, IORESOURCE_MEM, n); if (!r) break; /* Resources above 64K are graphics memory */ if (resource_size(r) > SZ_64K) mem = r; else if (i < ARRAY_SIZE(priv->dcrtc)) res[i++] = r; else return -EINVAL; } if (!mem) return -ENXIO; if (!devm_request_mem_region(dev->dev, mem->start, resource_size(mem), "armada-drm")) return -EBUSY; priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) { DRM_ERROR("failed to allocate private\n"); return -ENOMEM; } platform_set_drvdata(dev->platformdev, dev); dev->dev_private = priv; /* Get the implementation specific driver data. */ id = platform_get_device_id(dev->platformdev); if (!id) return -ENXIO; variant = (const struct armada_variant *)id->driver_data; INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work); INIT_KFIFO(priv->fb_unref); /* Mode setting support */ drm_mode_config_init(dev); dev->mode_config.min_width = 320; dev->mode_config.min_height = 200; /* * With vscale enabled, the maximum width is 1920 due to the * 1920 by 3 lines RAM */ dev->mode_config.max_width = 1920; dev->mode_config.max_height = 2048; dev->mode_config.preferred_depth = 24; dev->mode_config.funcs = &armada_drm_mode_config_funcs; drm_mm_init(&priv->linear, mem->start, resource_size(mem)); /* Create all LCD controllers */ for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) { int irq; if (!res[n]) break; irq = platform_get_irq(dev->platformdev, n); if (irq < 0) goto err_kms; ret = armada_drm_crtc_create(dev, dev->dev, res[n], irq, variant, NULL); if (ret) goto err_kms; } if (is_componentized(dev->dev)) { ret = component_bind_all(dev->dev, dev); if (ret) goto err_kms; } else { #ifdef CONFIG_DRM_ARMADA_TDA1998X ret = armada_drm_connector_slave_create(dev, &tda19988_config); if (ret) goto err_kms; #endif } ret = drm_vblank_init(dev, dev->mode_config.num_crtc); if (ret) goto err_comp; dev->irq_enabled = true; dev->vblank_disable_allowed = 1; ret = armada_fbdev_init(dev); if (ret) goto err_comp; drm_kms_helper_poll_init(dev); return 0; err_comp: if (is_componentized(dev->dev)) component_unbind_all(dev->dev, dev); err_kms: drm_mode_config_cleanup(dev); drm_mm_takedown(&priv->linear); flush_work(&priv->fb_unref_work); return ret; } static int armada_drm_unload(struct drm_device *dev) { struct armada_private *priv = dev->dev_private; drm_kms_helper_poll_fini(dev); armada_fbdev_fini(dev); if (is_componentized(dev->dev)) component_unbind_all(dev->dev, dev); drm_mode_config_cleanup(dev); drm_mm_takedown(&priv->linear); flush_work(&priv->fb_unref_work); dev->dev_private = NULL; return 0; } void armada_drm_vbl_event_add(struct armada_crtc *dcrtc, struct armada_vbl_event *evt) { unsigned long flags; spin_lock_irqsave(&dcrtc->irq_lock, flags); if (list_empty(&evt->node)) { list_add_tail(&evt->node, &dcrtc->vbl_list); drm_vblank_get(dcrtc->crtc.dev, dcrtc->num); } spin_unlock_irqrestore(&dcrtc->irq_lock, flags); } void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc, struct armada_vbl_event *evt) { if (!list_empty(&evt->node)) { list_del_init(&evt->node); drm_vblank_put(dcrtc->crtc.dev, dcrtc->num); } } void armada_drm_vbl_event_remove_unlocked(struct armada_crtc *dcrtc, struct armada_vbl_event *evt) { unsigned long flags; spin_lock_irqsave(&dcrtc->irq_lock, flags); armada_drm_vbl_event_remove(dcrtc, evt); spin_unlock_irqrestore(&dcrtc->irq_lock, flags); } /* These are called under the vbl_lock. */ static int armada_drm_enable_vblank(struct drm_device *dev, int crtc) { struct armada_private *priv = dev->dev_private; armada_drm_crtc_enable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA); return 0; } static void armada_drm_disable_vblank(struct drm_device *dev, int crtc) { struct armada_private *priv = dev->dev_private; armada_drm_crtc_disable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA); } static struct drm_ioctl_desc armada_ioctls[] = { DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, DRM_UNLOCKED), DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, DRM_UNLOCKED), }; static void armada_drm_lastclose(struct drm_device *dev) { armada_fbdev_lastclose(dev); } static const struct file_operations armada_drm_fops = { .owner = THIS_MODULE, .llseek = no_llseek, .read = drm_read, .poll = drm_poll, .unlocked_ioctl = drm_ioctl, .mmap = drm_gem_mmap, .open = drm_open, .release = drm_release, }; static struct drm_driver armada_drm_driver = { .load = armada_drm_load, .open = NULL, .preclose = NULL, .postclose = NULL, .lastclose = armada_drm_lastclose, .unload = armada_drm_unload, .set_busid = drm_platform_set_busid, .get_vblank_counter = drm_vblank_count, .enable_vblank = armada_drm_enable_vblank, .disable_vblank = armada_drm_disable_vblank, #ifdef CONFIG_DEBUG_FS .debugfs_init = armada_drm_debugfs_init, .debugfs_cleanup = armada_drm_debugfs_cleanup, #endif .gem_free_object = armada_gem_free_object, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_export = armada_gem_prime_export, .gem_prime_import = armada_gem_prime_import, .dumb_create = armada_gem_dumb_create, .dumb_map_offset = armada_gem_dumb_map_offset, .dumb_destroy = armada_gem_dumb_destroy, .gem_vm_ops = &armada_gem_vm_ops, .major = 1, .minor = 0, .name = "armada-drm", .desc = "Armada SoC DRM", .date = "20120730", .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_HAVE_IRQ | DRIVER_PRIME, .ioctls = armada_ioctls, .fops = &armada_drm_fops, }; static int armada_drm_bind(struct device *dev) { return drm_platform_init(&armada_drm_driver, to_platform_device(dev)); } static void armada_drm_unbind(struct device *dev) { drm_put_dev(dev_get_drvdata(dev)); } static int compare_of(struct device *dev, void *data) { return dev->of_node == data; } static int compare_dev_name(struct device *dev, void *data) { const char *name = data; return !strcmp(dev_name(dev), name); } static void armada_add_endpoints(struct device *dev, struct component_match **match, struct device_node *port) { struct device_node *ep, *remote; for_each_child_of_node(port, ep) { remote = of_graph_get_remote_port_parent(ep); if (!remote || !of_device_is_available(remote)) { of_node_put(remote); continue; } else if (!of_device_is_available(remote->parent)) { dev_warn(dev, "parent device of %s is not available\n", remote->full_name); of_node_put(remote); continue; } component_match_add(dev, match, compare_of, remote); of_node_put(remote); } } static int armada_drm_find_components(struct device *dev, struct component_match **match) { struct device_node *port; int i; if (dev->of_node) { struct device_node *np = dev->of_node; for (i = 0; ; i++) { port = of_parse_phandle(np, "ports", i); if (!port) break; component_match_add(dev, match, compare_of, port); of_node_put(port); } if (i == 0) { dev_err(dev, "missing 'ports' property\n"); return -ENODEV; } for (i = 0; ; i++) { port = of_parse_phandle(np, "ports", i); if (!port) break; armada_add_endpoints(dev, match, port); of_node_put(port); } } else if (dev->platform_data) { char **devices = dev->platform_data; struct device *d; for (i = 0; devices[i]; i++) component_match_add(dev, match, compare_dev_name, devices[i]); if (i == 0) { dev_err(dev, "missing 'ports' property\n"); return -ENODEV; } for (i = 0; devices[i]; i++) { d = bus_find_device_by_name(&platform_bus_type, NULL, devices[i]); if (d && d->of_node) { for_each_child_of_node(d->of_node, port) armada_add_endpoints(dev, match, port); } put_device(d); } } return 0; } static const struct component_master_ops armada_master_ops = { .bind = armada_drm_bind, .unbind = armada_drm_unbind, }; static int armada_drm_probe(struct platform_device *pdev) { if (is_componentized(&pdev->dev)) { struct component_match *match = NULL; int ret; ret = armada_drm_find_components(&pdev->dev, &match); if (ret < 0) return ret; return component_master_add_with_match(&pdev->dev, &armada_master_ops, match); } else { return drm_platform_init(&armada_drm_driver, pdev); } } static int armada_drm_remove(struct platform_device *pdev) { if (is_componentized(&pdev->dev)) component_master_del(&pdev->dev, &armada_master_ops); else drm_put_dev(platform_get_drvdata(pdev)); return 0; } static const struct platform_device_id armada_drm_platform_ids[] = { { .name = "armada-drm", .driver_data = (unsigned long)&armada510_ops, }, { .name = "armada-510-drm", .driver_data = (unsigned long)&armada510_ops, }, { }, }; MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids); static struct platform_driver armada_drm_platform_driver = { .probe = armada_drm_probe, .remove = armada_drm_remove, .driver = { .name = "armada-drm", .owner = THIS_MODULE, }, .id_table = armada_drm_platform_ids, }; static int __init armada_drm_init(void) { int ret; armada_drm_driver.num_ioctls = ARRAY_SIZE(armada_ioctls); ret = platform_driver_register(&armada_lcd_platform_driver); if (ret) return ret; ret = platform_driver_register(&armada_drm_platform_driver); if (ret) platform_driver_unregister(&armada_lcd_platform_driver); return ret; } module_init(armada_drm_init); static void __exit armada_drm_exit(void) { platform_driver_unregister(&armada_drm_platform_driver); platform_driver_unregister(&armada_lcd_platform_driver); } module_exit(armada_drm_exit); MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>"); MODULE_DESCRIPTION("Armada DRM Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:armada-drm");