diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_drv.c | 707 |
1 files changed, 707 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..8ac465208 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c @@ -0,0 +1,707 @@ +/* + * 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> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/pm_runtime.h> +#include <drm/drmP.h> +#include <drm/drm_crtc_helper.h> + +#include <linux/component.h> + +#include <drm/exynos_drm.h> + +#include "exynos_drm_drv.h" +#include "exynos_drm_crtc.h" +#include "exynos_drm_encoder.h" +#include "exynos_drm_fbdev.h" +#include "exynos_drm_fb.h" +#include "exynos_drm_gem.h" +#include "exynos_drm_plane.h" +#include "exynos_drm_vidi.h" +#include "exynos_drm_dmabuf.h" +#include "exynos_drm_g2d.h" +#include "exynos_drm_ipp.h" +#include "exynos_drm_iommu.h" + +#define DRIVER_NAME "exynos" +#define DRIVER_DESC "Samsung SoC DRM" +#define DRIVER_DATE "20110530" +#define DRIVER_MAJOR 1 +#define DRIVER_MINOR 0 + +static struct platform_device *exynos_drm_pdev; + +static DEFINE_MUTEX(drm_component_lock); +static LIST_HEAD(drm_component_list); + +struct component_dev { + struct list_head list; + struct device *crtc_dev; + struct device *conn_dev; + enum exynos_drm_output_type out_type; + unsigned int dev_type_flag; +}; + +static int exynos_drm_load(struct drm_device *dev, unsigned long flags) +{ + struct exynos_drm_private *private; + int ret; + + private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL); + if (!private) + return -ENOMEM; + + dev_set_drvdata(dev->dev, dev); + dev->dev_private = (void *)private; + + /* + * create mapping to manage iommu table and set a pointer to iommu + * mapping structure to iommu_mapping of private data. + * also this iommu_mapping can be used to check if iommu is supported + * or not. + */ + ret = drm_create_iommu_mapping(dev); + if (ret < 0) { + DRM_ERROR("failed to create iommu mapping.\n"); + goto err_free_private; + } + + drm_mode_config_init(dev); + + exynos_drm_mode_config_init(dev); + + /* setup possible_clones. */ + exynos_drm_encoder_setup(dev); + + platform_set_drvdata(dev->platformdev, dev); + + /* Try to bind all sub drivers. */ + ret = component_bind_all(dev->dev, dev); + if (ret) + goto err_mode_config_cleanup; + + ret = drm_vblank_init(dev, dev->mode_config.num_crtc); + if (ret) + goto err_unbind_all; + + /* Probe non kms sub drivers and virtual display driver. */ + ret = exynos_drm_device_subdrv_probe(dev); + if (ret) + goto err_cleanup_vblank; + + /* + * enable drm irq mode. + * - with irq_enabled = true, we can use the vblank feature. + * + * P.S. note that we wouldn't use drm irq handler but + * just specific driver own one instead because + * drm framework supports only one irq handler. + */ + dev->irq_enabled = true; + + /* + * with vblank_disable_allowed = true, vblank interrupt will be disabled + * by drm timer once a current process gives up ownership of + * vblank event.(after drm_vblank_put function is called) + */ + dev->vblank_disable_allowed = true; + + /* init kms poll for handling hpd */ + drm_kms_helper_poll_init(dev); + + /* force connectors detection */ + drm_helper_hpd_irq_event(dev); + + return 0; + +err_cleanup_vblank: + drm_vblank_cleanup(dev); +err_unbind_all: + component_unbind_all(dev->dev, dev); +err_mode_config_cleanup: + drm_mode_config_cleanup(dev); + drm_release_iommu_mapping(dev); +err_free_private: + kfree(private); + + return ret; +} + +static int exynos_drm_unload(struct drm_device *dev) +{ + exynos_drm_device_subdrv_remove(dev); + + exynos_drm_fbdev_fini(dev); + drm_kms_helper_poll_fini(dev); + + drm_vblank_cleanup(dev); + component_unbind_all(dev->dev, dev); + drm_mode_config_cleanup(dev); + drm_release_iommu_mapping(dev); + + kfree(dev->dev_private); + dev->dev_private = NULL; + + return 0; +} + +static int exynos_drm_suspend(struct drm_device *dev, pm_message_t state) +{ + struct drm_connector *connector; + + drm_modeset_lock_all(dev); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + int old_dpms = connector->dpms; + + if (connector->funcs->dpms) + connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF); + + /* Set the old mode back to the connector for resume */ + connector->dpms = old_dpms; + } + drm_modeset_unlock_all(dev); + + return 0; +} + +static int exynos_drm_resume(struct drm_device *dev) +{ + struct drm_connector *connector; + + drm_modeset_lock_all(dev); + list_for_each_entry(connector, &dev->mode_config.connector_list, head) { + if (connector->funcs->dpms) { + int dpms = connector->dpms; + + connector->dpms = DRM_MODE_DPMS_OFF; + connector->funcs->dpms(connector, dpms); + } + } + drm_modeset_unlock_all(dev); + + return 0; +} + +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 = exynos_drm_subdrv_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_preclose(struct drm_device *dev, + struct drm_file *file) +{ + exynos_drm_subdrv_close(dev, file); +} + +static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file) +{ + struct drm_pending_event *e, *et; + unsigned long flags; + + if (!file->driver_priv) + return; + + spin_lock_irqsave(&dev->event_lock, flags); + /* Release all events handled by page flip handler but not freed. */ + list_for_each_entry_safe(e, et, &file->event_list, link) { + list_del(&e->link); + e->destroy(e); + } + spin_unlock_irqrestore(&dev->event_lock, flags); + + kfree(file->driver_priv); + file->driver_priv = NULL; +} + +static void exynos_drm_lastclose(struct drm_device *dev) +{ + exynos_drm_fbdev_restore_mode(dev); +} + +static const struct vm_operations_struct exynos_drm_gem_vm_ops = { + .fault = exynos_drm_gem_fault, + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; + +static const struct drm_ioctl_desc exynos_ioctls[] = { + DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl, + DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, + exynos_drm_gem_get_ioctl, DRM_UNLOCKED), + DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, + vidi_connection_ioctl, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, + exynos_g2d_get_ver_ioctl, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, + exynos_g2d_set_cmdlist_ioctl, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, + exynos_g2d_exec_ioctl, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, + exynos_drm_ipp_get_property, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, + exynos_drm_ipp_set_property, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, + exynos_drm_ipp_queue_buf, DRM_UNLOCKED | DRM_AUTH), + DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, + exynos_drm_ipp_cmd_ctrl, DRM_UNLOCKED | DRM_AUTH), +}; + +static const struct file_operations exynos_drm_driver_fops = { + .owner = THIS_MODULE, + .open = drm_open, + .mmap = exynos_drm_gem_mmap, + .poll = drm_poll, + .read = drm_read, + .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif + .release = drm_release, +}; + +static struct drm_driver exynos_drm_driver = { + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, + .load = exynos_drm_load, + .unload = exynos_drm_unload, + .suspend = exynos_drm_suspend, + .resume = exynos_drm_resume, + .open = exynos_drm_open, + .preclose = exynos_drm_preclose, + .lastclose = exynos_drm_lastclose, + .postclose = exynos_drm_postclose, + .set_busid = drm_platform_set_busid, + .get_vblank_counter = drm_vblank_count, + .enable_vblank = exynos_drm_crtc_enable_vblank, + .disable_vblank = exynos_drm_crtc_disable_vblank, + .gem_free_object = exynos_drm_gem_free_object, + .gem_vm_ops = &exynos_drm_gem_vm_ops, + .dumb_create = exynos_drm_gem_dumb_create, + .dumb_map_offset = exynos_drm_gem_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 = exynos_dmabuf_prime_export, + .gem_prime_import = exynos_dmabuf_prime_import, + .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, +}; + +#ifdef CONFIG_PM_SLEEP +static int exynos_drm_sys_suspend(struct device *dev) +{ + struct drm_device *drm_dev = dev_get_drvdata(dev); + pm_message_t message; + + if (pm_runtime_suspended(dev) || !drm_dev) + return 0; + + message.event = PM_EVENT_SUSPEND; + return exynos_drm_suspend(drm_dev, message); +} + +static int exynos_drm_sys_resume(struct device *dev) +{ + struct drm_device *drm_dev = dev_get_drvdata(dev); + + if (pm_runtime_suspended(dev) || !drm_dev) + return 0; + + return exynos_drm_resume(drm_dev); +} +#endif + +static const struct dev_pm_ops exynos_drm_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_sys_suspend, exynos_drm_sys_resume) +}; + +int exynos_drm_component_add(struct device *dev, + enum exynos_drm_device_type dev_type, + enum exynos_drm_output_type out_type) +{ + struct component_dev *cdev; + + if (dev_type != EXYNOS_DEVICE_TYPE_CRTC && + dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) { + DRM_ERROR("invalid device type.\n"); + return -EINVAL; + } + + mutex_lock(&drm_component_lock); + + /* + * Make sure to check if there is a component which has two device + * objects, for connector and for encoder/connector. + * It should make sure that crtc and encoder/connector drivers are + * ready before exynos drm core binds them. + */ + list_for_each_entry(cdev, &drm_component_list, list) { + if (cdev->out_type == out_type) { + /* + * If crtc and encoder/connector device objects are + * added already just return. + */ + if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC | + EXYNOS_DEVICE_TYPE_CONNECTOR)) { + mutex_unlock(&drm_component_lock); + return 0; + } + + if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) { + cdev->crtc_dev = dev; + cdev->dev_type_flag |= dev_type; + } + + if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) { + cdev->conn_dev = dev; + cdev->dev_type_flag |= dev_type; + } + + mutex_unlock(&drm_component_lock); + return 0; + } + } + + mutex_unlock(&drm_component_lock); + + cdev = kzalloc(sizeof(*cdev), GFP_KERNEL); + if (!cdev) + return -ENOMEM; + + if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) + cdev->crtc_dev = dev; + if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) + cdev->conn_dev = dev; + + cdev->out_type = out_type; + cdev->dev_type_flag = dev_type; + + mutex_lock(&drm_component_lock); + list_add_tail(&cdev->list, &drm_component_list); + mutex_unlock(&drm_component_lock); + + return 0; +} + +void exynos_drm_component_del(struct device *dev, + enum exynos_drm_device_type dev_type) +{ + struct component_dev *cdev, *next; + + mutex_lock(&drm_component_lock); + + list_for_each_entry_safe(cdev, next, &drm_component_list, list) { + if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) { + if (cdev->crtc_dev == dev) { + cdev->crtc_dev = NULL; + cdev->dev_type_flag &= ~dev_type; + } + } + + if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) { + if (cdev->conn_dev == dev) { + cdev->conn_dev = NULL; + cdev->dev_type_flag &= ~dev_type; + } + } + + /* + * Release cdev object only in case that both of crtc and + * encoder/connector device objects are NULL. + */ + if (!cdev->crtc_dev && !cdev->conn_dev) { + list_del(&cdev->list); + kfree(cdev); + } + } + + mutex_unlock(&drm_component_lock); +} + +static int compare_dev(struct device *dev, void *data) +{ + return dev == (struct device *)data; +} + +static struct component_match *exynos_drm_match_add(struct device *dev) +{ + struct component_match *match = NULL; + struct component_dev *cdev; + unsigned int attach_cnt = 0; + + mutex_lock(&drm_component_lock); + + /* Do not retry to probe if there is no any kms driver regitered. */ + if (list_empty(&drm_component_list)) { + mutex_unlock(&drm_component_lock); + return ERR_PTR(-ENODEV); + } + + list_for_each_entry(cdev, &drm_component_list, list) { + /* + * Add components to master only in case that crtc and + * encoder/connector device objects exist. + */ + if (!cdev->crtc_dev || !cdev->conn_dev) + continue; + + attach_cnt++; + + mutex_unlock(&drm_component_lock); + + /* + * fimd and dpi modules have same device object so add + * only crtc device object in this case. + */ + if (cdev->crtc_dev == cdev->conn_dev) { + component_match_add(dev, &match, compare_dev, + cdev->crtc_dev); + goto out_lock; + } + + /* + * Do not chage below call order. + * crtc device first should be added to master because + * connector/encoder need pipe number of crtc when they + * are created. + */ + component_match_add(dev, &match, compare_dev, cdev->crtc_dev); + component_match_add(dev, &match, compare_dev, cdev->conn_dev); + +out_lock: + mutex_lock(&drm_component_lock); + } + + mutex_unlock(&drm_component_lock); + + return attach_cnt ? match : ERR_PTR(-EPROBE_DEFER); +} + +static int exynos_drm_bind(struct device *dev) +{ + return drm_platform_init(&exynos_drm_driver, to_platform_device(dev)); +} + +static void exynos_drm_unbind(struct device *dev) +{ + drm_put_dev(dev_get_drvdata(dev)); +} + +static const struct component_master_ops exynos_drm_ops = { + .bind = exynos_drm_bind, + .unbind = exynos_drm_unbind, +}; + +static struct platform_driver *const exynos_drm_kms_drivers[] = { +#ifdef CONFIG_DRM_EXYNOS_FIMD + &fimd_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS7_DECON + &decon_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_DP + &dp_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_DSI + &dsi_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_HDMI + &mixer_driver, + &hdmi_driver, +#endif +}; + +static struct platform_driver *const exynos_drm_non_kms_drivers[] = { +#ifdef CONFIG_DRM_EXYNOS_G2D + &g2d_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_FIMC + &fimc_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_ROTATOR + &rotator_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_GSC + &gsc_driver, +#endif +#ifdef CONFIG_DRM_EXYNOS_IPP + &ipp_driver, +#endif +}; + +static int exynos_drm_platform_probe(struct platform_device *pdev) +{ + struct component_match *match; + + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls); + + 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 const char * const strings[] = { + "samsung,exynos3", + "samsung,exynos4", + "samsung,exynos5", + "samsung,exynos7", +}; + +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 int exynos_drm_init(void) +{ + bool is_exynos = false; + int ret, i, j; + + /* + * Register device object only in case of Exynos SoC. + * + * Below codes resolves temporarily infinite loop issue incurred + * by Exynos drm driver when using multi-platform kernel. + * So these codes will be replaced with more generic way later. + */ + for (i = 0; i < ARRAY_SIZE(strings); i++) { + if (of_machine_is_compatible(strings[i])) { + is_exynos = true; + break; + } + } + + if (!is_exynos) + return -ENODEV; + + exynos_drm_pdev = platform_device_register_simple("exynos-drm", -1, + NULL, 0); + if (IS_ERR(exynos_drm_pdev)) + return PTR_ERR(exynos_drm_pdev); + + ret = exynos_drm_probe_vidi(); + if (ret < 0) + goto err_unregister_pd; + + for (i = 0; i < ARRAY_SIZE(exynos_drm_kms_drivers); ++i) { + ret = platform_driver_register(exynos_drm_kms_drivers[i]); + if (ret < 0) + goto err_unregister_kms_drivers; + } + + for (j = 0; j < ARRAY_SIZE(exynos_drm_non_kms_drivers); ++j) { + ret = platform_driver_register(exynos_drm_non_kms_drivers[j]); + if (ret < 0) + goto err_unregister_non_kms_drivers; + } + +#ifdef CONFIG_DRM_EXYNOS_IPP + ret = exynos_platform_device_ipp_register(); + if (ret < 0) + goto err_unregister_non_kms_drivers; +#endif + + ret = platform_driver_register(&exynos_drm_platform_driver); + if (ret) + goto err_unregister_resources; + + return 0; + +err_unregister_resources: +#ifdef CONFIG_DRM_EXYNOS_IPP + exynos_platform_device_ipp_unregister(); +#endif + +err_unregister_non_kms_drivers: + while (--j >= 0) + platform_driver_unregister(exynos_drm_non_kms_drivers[j]); + +err_unregister_kms_drivers: + while (--i >= 0) + platform_driver_unregister(exynos_drm_kms_drivers[i]); + + exynos_drm_remove_vidi(); + +err_unregister_pd: + platform_device_unregister(exynos_drm_pdev); + + return ret; +} + +static void exynos_drm_exit(void) +{ + int i; + +#ifdef CONFIG_DRM_EXYNOS_IPP + exynos_platform_device_ipp_unregister(); +#endif + + for (i = ARRAY_SIZE(exynos_drm_non_kms_drivers) - 1; i >= 0; --i) + platform_driver_unregister(exynos_drm_non_kms_drivers[i]); + + for (i = ARRAY_SIZE(exynos_drm_kms_drivers) - 1; i >= 0; --i) + platform_driver_unregister(exynos_drm_kms_drivers[i]); + + platform_driver_unregister(&exynos_drm_platform_driver); + + exynos_drm_remove_vidi(); + + platform_device_unregister(exynos_drm_pdev); +} + +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"); |