1 files changed, 287 insertions, 0 deletions
diff --git a/drivers/gpu/drm/armada/armada_drv.c b/drivers/gpu/drm/armada/armada_drv.c
new file mode 100644
index 000000000..688ba358f
--- /dev/null
+++ b/drivers/gpu/drm/armada/armada_drv.c
@@ -0,0 +1,287 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2012 Russell King
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/module.h>
+#include <linux/of_graph.h>
+#include <linux/platform_device.h>
+
+#include <drm/drm_aperture.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_managed.h>
+#include <drm/drm_prime.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_vblank.h>
+
+#include "armada_crtc.h"
+#include "armada_drm.h"
+#include "armada_gem.h"
+#include "armada_fb.h"
+#include "armada_hw.h"
+#include <drm/armada_drm.h>
+#include "armada_ioctlP.h"
+
+static const struct drm_ioctl_desc armada_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,0),
+	DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, 0),
+	DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, 0),
+};
+
+DEFINE_DRM_GEM_FOPS(armada_drm_fops);
+
+static const struct drm_driver armada_drm_driver = {
+	.lastclose		= drm_fb_helper_lastclose,
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= armada_gem_prime_import,
+	.dumb_create		= armada_gem_dumb_create,
+	.major			= 1,
+	.minor			= 0,
+	.name			= "armada-drm",
+	.desc			= "Armada SoC DRM",
+	.date			= "20120730",
+	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.ioctls			= armada_ioctls,
+	.num_ioctls = ARRAY_SIZE(armada_ioctls),
+	.fops			= &armada_drm_fops,
+};
+
+static const struct drm_mode_config_funcs armada_drm_mode_config_funcs = {
+	.fb_create		= armada_fb_create,
+	.output_poll_changed	= drm_fb_helper_output_poll_changed,
+	.atomic_check		= drm_atomic_helper_check,
+	.atomic_commit		= drm_atomic_helper_commit,
+};
+
+static int armada_drm_bind(struct device *dev)
+{
+	struct armada_private *priv;
+	struct resource *mem = NULL;
+	int ret, n;
+
+	for (n = 0; ; n++) {
+		struct resource *r = platform_get_resource(to_platform_device(dev),
+							   IORESOURCE_MEM, n);
+		if (!r)
+			break;
+
+		/* Resources above 64K are graphics memory */
+		if (resource_size(r) > SZ_64K)
+			mem = r;
+		else
+			return -EINVAL;
+	}
+
+	if (!mem)
+		return -ENXIO;
+
+	if (!devm_request_mem_region(dev, mem->start, resource_size(mem),
+				     "armada-drm"))
+		return -EBUSY;
+
+	priv = devm_drm_dev_alloc(dev, &armada_drm_driver,
+				  struct armada_private, drm);
+	if (IS_ERR(priv)) {
+		dev_err(dev, "[" DRM_NAME ":%s] devm_drm_dev_alloc failed: %li\n",
+			__func__, PTR_ERR(priv));
+		return PTR_ERR(priv);
+	}
+
+	/* Remove early framebuffers */
+	ret = drm_aperture_remove_framebuffers(&armada_drm_driver);
+	if (ret) {
+		dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n",
+			__func__, ret);
+		return ret;
+	}
+
+	dev_set_drvdata(dev, &priv->drm);
+
+	/* Mode setting support */
+	drm_mode_config_init(&priv->drm);
+	priv->drm.mode_config.min_width = 320;
+	priv->drm.mode_config.min_height = 200;
+
+	/*
+	 * With vscale enabled, the maximum width is 1920 due to the
+	 * 1920 by 3 lines RAM
+	 */
+	priv->drm.mode_config.max_width = 1920;
+	priv->drm.mode_config.max_height = 2048;
+
+	priv->drm.mode_config.preferred_depth = 24;
+	priv->drm.mode_config.funcs = &armada_drm_mode_config_funcs;
+	drm_mm_init(&priv->linear, mem->start, resource_size(mem));
+	mutex_init(&priv->linear_lock);
+
+	ret = component_bind_all(dev, &priv->drm);
+	if (ret)
+		goto err_kms;
+
+	ret = drm_vblank_init(&priv->drm, priv->drm.mode_config.num_crtc);
+	if (ret)
+		goto err_comp;
+
+	drm_mode_config_reset(&priv->drm);
+
+	ret = armada_fbdev_init(&priv->drm);
+	if (ret)
+		goto err_comp;
+
+	drm_kms_helper_poll_init(&priv->drm);
+
+	ret = drm_dev_register(&priv->drm, 0);
+	if (ret)
+		goto err_poll;
+
+#ifdef CONFIG_DEBUG_FS
+	armada_drm_debugfs_init(priv->drm.primary);
+#endif
+
+	return 0;
+
+ err_poll:
+	drm_kms_helper_poll_fini(&priv->drm);
+	armada_fbdev_fini(&priv->drm);
+ err_comp:
+	component_unbind_all(dev, &priv->drm);
+ err_kms:
+	drm_mode_config_cleanup(&priv->drm);
+	drm_mm_takedown(&priv->linear);
+	return ret;
+}
+
+static void armada_drm_unbind(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+	struct armada_private *priv = drm_to_armada_dev(drm);
+
+	drm_kms_helper_poll_fini(&priv->drm);
+	armada_fbdev_fini(&priv->drm);
+
+	drm_dev_unregister(&priv->drm);
+
+	drm_atomic_helper_shutdown(&priv->drm);
+
+	component_unbind_all(dev, &priv->drm);
+
+	drm_mode_config_cleanup(&priv->drm);
+	drm_mm_takedown(&priv->linear);
+}
+
+static void armada_add_endpoints(struct device *dev,
+	struct component_match **match, struct device_node *dev_node)
+{
+	struct device_node *ep, *remote;
+
+	for_each_endpoint_of_node(dev_node, ep) {
+		remote = of_graph_get_remote_port_parent(ep);
+		if (remote && of_device_is_available(remote))
+			drm_of_component_match_add(dev, match, component_compare_of,
+						   remote);
+		of_node_put(remote);
+	}
+}
+
+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)
+{
+	struct component_match *match = NULL;
+	struct device *dev = &pdev->dev;
+	int ret;
+
+	ret = drm_of_component_probe(dev, component_compare_dev_name, &armada_master_ops);
+	if (ret != -EINVAL)
+		return ret;
+
+	if (dev->platform_data) {
+		char **devices = dev->platform_data;
+		struct device *d;
+		int i;
+
+		for (i = 0; devices[i]; i++)
+			component_match_add(dev, &match, component_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)
+				armada_add_endpoints(dev, &match, d->of_node);
+			put_device(d);
+		}
+	}
+
+	return component_master_add_with_match(&pdev->dev, &armada_master_ops,
+					       match);
+}
+
+static int armada_drm_remove(struct platform_device *pdev)
+{
+	component_master_del(&pdev->dev, &armada_master_ops);
+	return 0;
+}
+
+static const struct platform_device_id armada_drm_platform_ids[] = {
+	{
+		.name		= "armada-drm",
+	}, {
+		.name		= "armada-510-drm",
+	},
+	{ },
+};
+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;
+
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
+	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@armlinux.org.uk>");
+MODULE_DESCRIPTION("Armada DRM Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:armada-drm");