1 files changed, 484 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
new file mode 100644
index 000000000..16c539657
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -0,0 +1,484 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Authors:
+ *	Inki Dae <inki.dae@samsung.com>
+ *	Joonyoung Shim <jy0922.shim@samsung.com>
+ *	Seung-Woo Kim <sw0312.kim@samsung.com>
+ */
+
+#include <linux/component.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/uaccess.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_file.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+#include <drm/exynos_drm.h>
+
+#include "exynos_drm_drv.h"
+#include "exynos_drm_fb.h"
+#include "exynos_drm_fbdev.h"
+#include "exynos_drm_g2d.h"
+#include "exynos_drm_gem.h"
+#include "exynos_drm_ipp.h"
+#include "exynos_drm_plane.h"
+#include "exynos_drm_vidi.h"
+
+#define DRIVER_NAME	"exynos"
+#define DRIVER_DESC	"Samsung SoC DRM"
+#define DRIVER_DATE	"20180330"
+
+/*
+ * Interface history:
+ *
+ * 1.0 - Original version
+ * 1.1 - Upgrade IPP driver to version 2.0
+ */
+#define DRIVER_MAJOR	1
+#define DRIVER_MINOR	1
+
+static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
+{
+	struct drm_exynos_file_private *file_priv;
+	int ret;
+
+	file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
+	if (!file_priv)
+		return -ENOMEM;
+
+	file->driver_priv = file_priv;
+	ret = g2d_open(dev, file);
+	if (ret)
+		goto err_file_priv_free;
+
+	return ret;
+
+err_file_priv_free:
+	kfree(file_priv);
+	file->driver_priv = NULL;
+	return ret;
+}
+
+static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
+{
+	g2d_close(dev, file);
+	kfree(file->driver_priv);
+	file->driver_priv = NULL;
+}
+
+static const struct drm_ioctl_desc exynos_ioctls[] = {
+	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
+			DRM_AUTH),
+	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_RESOURCES,
+			exynos_drm_ipp_get_res_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_CAPS, exynos_drm_ipp_get_caps_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_LIMITS,
+			exynos_drm_ipp_get_limits_ioctl,
+			DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(EXYNOS_IPP_COMMIT, exynos_drm_ipp_commit_ioctl,
+			DRM_RENDER_ALLOW),
+};
+
+DEFINE_DRM_GEM_FOPS(exynos_drm_driver_fops);
+
+static const struct drm_driver exynos_drm_driver = {
+	.driver_features	= DRIVER_MODESET | DRIVER_GEM
+				  | DRIVER_ATOMIC | DRIVER_RENDER,
+	.open			= exynos_drm_open,
+	.lastclose		= drm_fb_helper_lastclose,
+	.postclose		= exynos_drm_postclose,
+	.dumb_create		= exynos_drm_gem_dumb_create,
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= exynos_drm_gem_prime_import,
+	.gem_prime_import_sg_table	= exynos_drm_gem_prime_import_sg_table,
+	.gem_prime_mmap		= drm_gem_prime_mmap,
+	.ioctls			= exynos_ioctls,
+	.num_ioctls		= ARRAY_SIZE(exynos_ioctls),
+	.fops			= &exynos_drm_driver_fops,
+	.name	= DRIVER_NAME,
+	.desc	= DRIVER_DESC,
+	.date	= DRIVER_DATE,
+	.major	= DRIVER_MAJOR,
+	.minor	= DRIVER_MINOR,
+};
+
+static int exynos_drm_suspend(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	return  drm_mode_config_helper_suspend(drm_dev);
+}
+
+static void exynos_drm_resume(struct device *dev)
+{
+	struct drm_device *drm_dev = dev_get_drvdata(dev);
+
+	drm_mode_config_helper_resume(drm_dev);
+}
+
+static const struct dev_pm_ops exynos_drm_pm_ops = {
+	.prepare = exynos_drm_suspend,
+	.complete = exynos_drm_resume,
+};
+
+/* forward declaration */
+static struct platform_driver exynos_drm_platform_driver;
+
+struct exynos_drm_driver_info {
+	struct platform_driver *driver;
+	unsigned int flags;
+};
+
+#define DRM_COMPONENT_DRIVER	BIT(0)	/* supports component framework */
+#define DRM_VIRTUAL_DEVICE	BIT(1)	/* create virtual platform device */
+#define DRM_FIMC_DEVICE		BIT(2)	/* devices shared with V4L2 subsystem */
+
+#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
+
+/*
+ * Connector drivers should not be placed before associated crtc drivers,
+ * because connector requires pipe number of its crtc during initialization.
+ */
+static struct exynos_drm_driver_info exynos_drm_drivers[] = {
+	{
+		DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
+		DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
+	}, {
+		DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
+		DRM_COMPONENT_DRIVER | DRM_FIMC_DEVICE,
+	}, {
+		DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(scaler_driver, CONFIG_DRM_EXYNOS_SCALER),
+		DRM_COMPONENT_DRIVER
+	}, {
+		DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
+		DRM_COMPONENT_DRIVER
+	}, {
+		&exynos_drm_platform_driver,
+		DRM_VIRTUAL_DEVICE
+	}
+};
+
+static struct component_match *exynos_drm_match_add(struct device *dev)
+{
+	struct component_match *match = NULL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+		struct device *p = NULL, *d;
+
+		if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
+			continue;
+
+		while ((d = platform_find_device_by_driver(p, &info->driver->driver))) {
+			put_device(p);
+
+			if (!(info->flags & DRM_FIMC_DEVICE) ||
+			    exynos_drm_check_fimc_device(d) == 0)
+				component_match_add(dev, &match, component_compare_dev, d);
+			p = d;
+		}
+		put_device(p);
+	}
+
+	return match ?: ERR_PTR(-ENODEV);
+}
+
+static int exynos_drm_bind(struct device *dev)
+{
+	struct exynos_drm_private *private;
+	struct drm_encoder *encoder;
+	struct drm_device *drm;
+	unsigned int clone_mask;
+	int ret;
+
+	drm = drm_dev_alloc(&exynos_drm_driver, dev);
+	if (IS_ERR(drm))
+		return PTR_ERR(drm);
+
+	private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
+	if (!private) {
+		ret = -ENOMEM;
+		goto err_free_drm;
+	}
+
+	init_waitqueue_head(&private->wait);
+	spin_lock_init(&private->lock);
+
+	dev_set_drvdata(dev, drm);
+	drm->dev_private = (void *)private;
+
+	drm_mode_config_init(drm);
+
+	exynos_drm_mode_config_init(drm);
+
+	/* setup possible_clones. */
+	clone_mask = 0;
+	list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
+		clone_mask |= drm_encoder_mask(encoder);
+
+	list_for_each_entry(encoder, &drm->mode_config.encoder_list, head)
+		encoder->possible_clones = clone_mask;
+
+	/* Try to bind all sub drivers. */
+	ret = component_bind_all(drm->dev, drm);
+	if (ret)
+		goto err_mode_config_cleanup;
+
+	ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
+	if (ret)
+		goto err_unbind_all;
+
+	drm_mode_config_reset(drm);
+
+	/* init kms poll for handling hpd */
+	drm_kms_helper_poll_init(drm);
+
+	ret = exynos_drm_fbdev_init(drm);
+	if (ret)
+		goto err_cleanup_poll;
+
+	/* register the DRM device */
+	ret = drm_dev_register(drm, 0);
+	if (ret < 0)
+		goto err_cleanup_fbdev;
+
+	return 0;
+
+err_cleanup_fbdev:
+	exynos_drm_fbdev_fini(drm);
+err_cleanup_poll:
+	drm_kms_helper_poll_fini(drm);
+err_unbind_all:
+	component_unbind_all(drm->dev, drm);
+err_mode_config_cleanup:
+	drm_mode_config_cleanup(drm);
+	exynos_drm_cleanup_dma(drm);
+	kfree(private);
+err_free_drm:
+	drm_dev_put(drm);
+
+	return ret;
+}
+
+static void exynos_drm_unbind(struct device *dev)
+{
+	struct drm_device *drm = dev_get_drvdata(dev);
+
+	drm_dev_unregister(drm);
+
+	exynos_drm_fbdev_fini(drm);
+	drm_kms_helper_poll_fini(drm);
+
+	component_unbind_all(drm->dev, drm);
+	drm_mode_config_cleanup(drm);
+	exynos_drm_cleanup_dma(drm);
+
+	kfree(drm->dev_private);
+	drm->dev_private = NULL;
+	dev_set_drvdata(dev, NULL);
+
+	drm_dev_put(drm);
+}
+
+static const struct component_master_ops exynos_drm_ops = {
+	.bind		= exynos_drm_bind,
+	.unbind		= exynos_drm_unbind,
+};
+
+static int exynos_drm_platform_probe(struct platform_device *pdev)
+{
+	struct component_match *match;
+
+	pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+	match = exynos_drm_match_add(&pdev->dev);
+	if (IS_ERR(match))
+		return PTR_ERR(match);
+
+	return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
+					       match);
+}
+
+static int exynos_drm_platform_remove(struct platform_device *pdev)
+{
+	component_master_del(&pdev->dev, &exynos_drm_ops);
+	return 0;
+}
+
+static struct platform_driver exynos_drm_platform_driver = {
+	.probe	= exynos_drm_platform_probe,
+	.remove	= exynos_drm_platform_remove,
+	.driver	= {
+		.name	= "exynos-drm",
+		.pm	= &exynos_drm_pm_ops,
+	},
+};
+
+static void exynos_drm_unregister_devices(void)
+{
+	int i;
+
+	for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+		struct device *dev;
+
+		if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
+			continue;
+
+		while ((dev = platform_find_device_by_driver(NULL,
+						&info->driver->driver))) {
+			put_device(dev);
+			platform_device_unregister(to_platform_device(dev));
+		}
+	}
+}
+
+static int exynos_drm_register_devices(void)
+{
+	struct platform_device *pdev;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+
+		if (!info->driver || !(info->flags & DRM_VIRTUAL_DEVICE))
+			continue;
+
+		pdev = platform_device_register_simple(
+					info->driver->driver.name, -1, NULL, 0);
+		if (IS_ERR(pdev))
+			goto fail;
+	}
+
+	return 0;
+fail:
+	exynos_drm_unregister_devices();
+	return PTR_ERR(pdev);
+}
+
+static void exynos_drm_unregister_drivers(void)
+{
+	int i;
+
+	for (i = ARRAY_SIZE(exynos_drm_drivers) - 1; i >= 0; --i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+
+		if (!info->driver)
+			continue;
+
+		platform_driver_unregister(info->driver);
+	}
+}
+
+static int exynos_drm_register_drivers(void)
+{
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
+		struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
+
+		if (!info->driver)
+			continue;
+
+		ret = platform_driver_register(info->driver);
+		if (ret)
+			goto fail;
+	}
+	return 0;
+fail:
+	exynos_drm_unregister_drivers();
+	return ret;
+}
+
+static int exynos_drm_init(void)
+{
+	int ret;
+
+	if (drm_firmware_drivers_only())
+		return -ENODEV;
+
+	ret = exynos_drm_register_devices();
+	if (ret)
+		return ret;
+
+	ret = exynos_drm_register_drivers();
+	if (ret)
+		goto err_unregister_pdevs;
+
+	return 0;
+
+err_unregister_pdevs:
+	exynos_drm_unregister_devices();
+
+	return ret;
+}
+
+static void exynos_drm_exit(void)
+{
+	exynos_drm_unregister_drivers();
+	exynos_drm_unregister_devices();
+}
+
+module_init(exynos_drm_init);
+module_exit(exynos_drm_exit);
+
+MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
+MODULE_DESCRIPTION("Samsung SoC DRM Driver");
+MODULE_LICENSE("GPL");