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path: root/drivers/gpu/drm/exynos/exynos_drm_drv.c
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Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_drv.c')
-rw-r--r--drivers/gpu/drm/exynos/exynos_drm_drv.c484
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");