From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: AndrĂ© Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/gpu/drm/armada/armada_drv.c | 519 ++++++++++++++++++++++++++++++++++++ 1 file changed, 519 insertions(+) create mode 100644 drivers/gpu/drm/armada/armada_drv.c (limited to 'drivers/gpu/drm/armada/armada_drv.c') diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c new file mode 100644 index 000000000..b01420c84 --- /dev/null +++ b/drivers/gpu/drm/armada/armada_drv.c @@ -0,0 +1,519 @@ +/* + * 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 +#include +#include +#include +#include +#include +#include "armada_crtc.h" +#include "armada_drm.h" +#include "armada_gem.h" +#include "armada_hw.h" +#include +#include "armada_ioctlP.h" + +#ifdef CONFIG_DRM_ARMADA_TDA1998X +#include +#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", + }, + .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 "); +MODULE_DESCRIPTION("Armada DRM Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:armada-drm"); -- cgit v1.2.3-54-g00ecf