Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 281 insertions, 0 deletions

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
new file mode 100644
index 000000000..ddb0403f1
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -0,0 +1,281 @@
+/*
+ * 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_gem_framebuffer_helper.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_of.h>
+
+#include "kirin_drm_drv.h"
+
+static struct kirin_dc_ops *dc_ops;
+
+static int kirin_drm_kms_cleanup(struct drm_device *dev)
+{
+	struct kirin_drm_private *priv = dev->dev_private;
+
+	if (priv->fbdev) {
+		drm_fbdev_cma_fini(priv->fbdev);
+		priv->fbdev = NULL;
+	}
+
+	drm_kms_helper_poll_fini(dev);
+	dc_ops->cleanup(to_platform_device(dev->dev));
+	drm_mode_config_cleanup(dev);
+	devm_kfree(dev->dev, priv);
+	dev->dev_private = NULL;
+
+	return 0;
+}
+
+static void kirin_fbdev_output_poll_changed(struct drm_device *dev)
+{
+	struct kirin_drm_private *priv = dev->dev_private;
+
+	drm_fbdev_cma_hotplug_event(priv->fbdev);
+}
+
+static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create,
+	.output_poll_changed = kirin_fbdev_output_poll_changed,
+	.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)
+{
+	struct kirin_drm_private *priv;
+	int ret;
+
+	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	dev->dev_private = priv;
+	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(to_platform_device(dev->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;
+	}
+
+	/* vblank init */
+	ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
+	if (ret) {
+		DRM_ERROR("failed to initialize vblank.\n");
+		goto err_unbind_all;
+	}
+	/* with irq_enabled = true, we can use the vblank feature. */
+	dev->irq_enabled = true;
+
+	/* reset all the states of crtc/plane/encoder/connector */
+	drm_mode_config_reset(dev);
+
+	/* init kms poll for handling hpd */
+	drm_kms_helper_poll_init(dev);
+
+	priv->fbdev = drm_fbdev_cma_init(dev, 32,
+					 dev->mode_config.num_connector);
+
+	if (IS_ERR(priv->fbdev)) {
+		DRM_ERROR("failed to initialize fbdev.\n");
+		ret = PTR_ERR(priv->fbdev);
+		goto err_cleanup_poll;
+	}
+	return 0;
+
+err_cleanup_poll:
+	drm_kms_helper_poll_fini(dev);
+err_unbind_all:
+	component_unbind_all(dev->dev, dev);
+err_dc_cleanup:
+	dc_ops->cleanup(to_platform_device(dev->dev));
+err_mode_config_cleanup:
+	drm_mode_config_cleanup(dev);
+	devm_kfree(dev->dev, priv);
+	dev->dev_private = NULL;
+
+	return ret;
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
+
+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,
+
+	.gem_free_object_unlocked = drm_gem_cma_free_object,
+	.gem_vm_ops		= &drm_gem_cma_vm_ops,
+	.dumb_create		= kirin_gem_cma_dumb_create,
+
+	.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_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 (IS_ERR(drm_dev))
+		return PTR_ERR(drm_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;
+
+	return 0;
+
+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)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	drm_dev_unregister(drm_dev);
+	kirin_drm_kms_cleanup(drm_dev);
+	drm_dev_unref(drm_dev);
+}
+
+static const struct component_master_ops kirin_drm_ops = {
+	.bind = kirin_drm_bind,
+	.unbind = kirin_drm_unbind,
+};
+
+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 = of_graph_get_remote_node(np, 0, 0);
+	if (!remote)
+		return -ENODEV;
+
+	drm_of_component_match_add(dev, &match, compare_of, remote);
+	of_node_put(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");