--- /dev/null
+/*
+ * Hisilicon Kirin SoCs drm master driver
+ *
+ * Copyright (c) 2016 Linaro Limited.
+ * Copyright (c) 2014-2016 Hisilicon Limited.
+ *
+ * Author:
+ * Xinliang Liu <z.liuxinliang@hisilicon.com>
+ * Xinliang Liu <xinliang.liu@linaro.org>
+ * Xinwei Kong <kong.kongxinwei@hisilicon.com>
+ *
+ * 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/of_platform.h>
+#include <linux/component.h>
+#include <linux/of_graph.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_atomic_helper.h>
+
+#include "kirin_drm_drv.h"
+
+static struct kirin_dc_ops *dc_ops;
+
+static int kirin_drm_kms_cleanup(struct drm_device *dev)
+{
+ dc_ops->cleanup(dev);
+ drm_mode_config_cleanup(dev);
+
+ return 0;
+}
+
+static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
+ .fb_create = drm_fb_cma_create,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static void kirin_drm_mode_config_init(struct drm_device *dev)
+{
+ dev->mode_config.min_width = 0;
+ dev->mode_config.min_height = 0;
+
+ dev->mode_config.max_width = 2048;
+ dev->mode_config.max_height = 2048;
+
+ dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
+}
+
+static int kirin_drm_kms_init(struct drm_device *dev)
+{
+ int ret;
+
+ dev_set_drvdata(dev->dev, dev);
+
+ /* dev->mode_config initialization */
+ drm_mode_config_init(dev);
+ kirin_drm_mode_config_init(dev);
+
+ /* display controller init */
+ ret = dc_ops->init(dev);
+ if (ret)
+ goto err_mode_config_cleanup;
+
+ /* bind and init sub drivers */
+ ret = component_bind_all(dev->dev, dev);
+ if (ret) {
+ DRM_ERROR("failed to bind all component.\n");
+ goto err_dc_cleanup;
+ }
+
+ /* reset all the states of crtc/plane/encoder/connector */
+ drm_mode_config_reset(dev);
+
+ return 0;
+
+err_dc_cleanup:
+ dc_ops->cleanup(dev);
+err_mode_config_cleanup:
+ drm_mode_config_cleanup(dev);
+
+ return ret;
+}
+
+static const struct file_operations kirin_drm_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 int kirin_gem_cma_dumb_create(struct drm_file *file,
+ struct drm_device *dev,
+ struct drm_mode_create_dumb *args)
+{
+ return drm_gem_cma_dumb_create_internal(file, dev, args);
+}
+
+static struct drm_driver kirin_drm_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
+ DRIVER_ATOMIC,
+ .fops = &kirin_drm_fops,
+ .set_busid = drm_platform_set_busid,
+
+ .gem_free_object = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+ .dumb_create = kirin_gem_cma_dumb_create,
+ .dumb_map_offset = drm_gem_cma_dumb_map_offset,
+ .dumb_destroy = drm_gem_dumb_destroy,
+
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_import = drm_gem_prime_import,
+ .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,
+
+ .name = "kirin",
+ .desc = "Hisilicon Kirin SoCs' DRM Driver",
+ .date = "20150718",
+ .major = 1,
+ .minor = 0,
+};
+
+static int compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+static int kirin_drm_connectors_register(struct drm_device *dev)
+{
+ struct drm_connector *connector;
+ struct drm_connector *failed_connector;
+ int ret;
+
+ mutex_lock(&dev->mode_config.mutex);
+ drm_for_each_connector(connector, dev) {
+ ret = drm_connector_register(connector);
+ if (ret) {
+ failed_connector = connector;
+ goto err;
+ }
+ }
+ mutex_unlock(&dev->mode_config.mutex);
+
+ return 0;
+
+err:
+ drm_for_each_connector(connector, dev) {
+ if (failed_connector == connector)
+ break;
+ drm_connector_unregister(connector);
+ }
+ mutex_unlock(&dev->mode_config.mutex);
+
+ return ret;
+}
+
+static int kirin_drm_bind(struct device *dev)
+{
+ struct drm_driver *driver = &kirin_drm_driver;
+ struct drm_device *drm_dev;
+ int ret;
+
+ drm_dev = drm_dev_alloc(driver, dev);
+ if (!drm_dev)
+ return -ENOMEM;
+
+ drm_dev->platformdev = to_platform_device(dev);
+
+ ret = kirin_drm_kms_init(drm_dev);
+ if (ret)
+ goto err_drm_dev_unref;
+
+ ret = drm_dev_register(drm_dev, 0);
+ if (ret)
+ goto err_kms_cleanup;
+
+ /* connectors should be registered after drm device register */
+ ret = kirin_drm_connectors_register(drm_dev);
+ if (ret)
+ goto err_drm_dev_unregister;
+
+ DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+ driver->name, driver->major, driver->minor, driver->patchlevel,
+ driver->date, drm_dev->primary->index);
+
+ return 0;
+
+err_drm_dev_unregister:
+ drm_dev_unregister(drm_dev);
+err_kms_cleanup:
+ kirin_drm_kms_cleanup(drm_dev);
+err_drm_dev_unref:
+ drm_dev_unref(drm_dev);
+
+ return ret;
+}
+
+static void kirin_drm_unbind(struct device *dev)
+{
+ drm_put_dev(dev_get_drvdata(dev));
+}
+
+static const struct component_master_ops kirin_drm_ops = {
+ .bind = kirin_drm_bind,
+ .unbind = kirin_drm_unbind,
+};
+
+static struct device_node *kirin_get_remote_node(struct device_node *np)
+{
+ struct device_node *endpoint, *remote;
+
+ /* get the first endpoint, in our case only one remote node
+ * is connected to display controller.
+ */
+ endpoint = of_graph_get_next_endpoint(np, NULL);
+ if (!endpoint) {
+ DRM_ERROR("no valid endpoint node\n");
+ return ERR_PTR(-ENODEV);
+ }
+ of_node_put(endpoint);
+
+ remote = of_graph_get_remote_port_parent(endpoint);
+ if (!remote) {
+ DRM_ERROR("no valid remote node\n");
+ return ERR_PTR(-ENODEV);
+ }
+ of_node_put(remote);
+
+ if (!of_device_is_available(remote)) {
+ DRM_ERROR("not available for remote node\n");
+ return ERR_PTR(-ENODEV);
+ }
+
+ return remote;
+}
+
+static int kirin_drm_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct component_match *match = NULL;
+ struct device_node *remote;
+
+ dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
+ if (!dc_ops) {
+ DRM_ERROR("failed to get dt id data\n");
+ return -EINVAL;
+ }
+
+ remote = kirin_get_remote_node(np);
+ if (IS_ERR(remote))
+ return PTR_ERR(remote);
+
+ component_match_add(dev, &match, compare_of, remote);
+
+ return component_master_add_with_match(dev, &kirin_drm_ops, match);
+
+ return 0;
+}
+
+static int kirin_drm_platform_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &kirin_drm_ops);
+ dc_ops = NULL;
+ return 0;
+}
+
+static const struct of_device_id kirin_drm_dt_ids[] = {
+ { .compatible = "hisilicon,hi6220-ade",
+ .data = &ade_dc_ops,
+ },
+ { /* end node */ },
+};
+MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
+
+static struct platform_driver kirin_drm_platform_driver = {
+ .probe = kirin_drm_platform_probe,
+ .remove = kirin_drm_platform_remove,
+ .driver = {
+ .name = "kirin-drm",
+ .of_match_table = kirin_drm_dt_ids,
+ },
+};
+
+module_platform_driver(kirin_drm_platform_driver);
+
+MODULE_AUTHOR("Xinliang Liu <xinliang.liu@linaro.org>");
+MODULE_AUTHOR("Xinliang Liu <z.liuxinliang@hisilicon.com>");
+MODULE_AUTHOR("Xinwei Kong <kong.kongxinwei@hisilicon.com>");
+MODULE_DESCRIPTION("hisilicon Kirin SoCs' DRM master driver");
+MODULE_LICENSE("GPL v2");
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff