614 lines
15 KiB
C
614 lines
15 KiB
C
/*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Authors:
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* Inki Dae <inki.dae@samsung.com>
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* Joonyoung Shim <jy0922.shim@samsung.com>
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* Seung-Woo Kim <sw0312.kim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/pm_runtime.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <linux/component.h>
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#include <drm/exynos_drm.h>
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#include "exynos_drm_drv.h"
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#include "exynos_drm_crtc.h"
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#include "exynos_drm_fbdev.h"
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#include "exynos_drm_fb.h"
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#include "exynos_drm_gem.h"
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#include "exynos_drm_plane.h"
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#include "exynos_drm_vidi.h"
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#include "exynos_drm_g2d.h"
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#include "exynos_drm_ipp.h"
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#include "exynos_drm_iommu.h"
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#define DRIVER_NAME "exynos"
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#define DRIVER_DESC "Samsung SoC DRM"
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#define DRIVER_DATE "20110530"
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#define DRIVER_MAJOR 1
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#define DRIVER_MINOR 0
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static struct device *exynos_drm_get_dma_device(void);
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static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
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{
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struct exynos_drm_private *private;
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struct drm_encoder *encoder;
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unsigned int clone_mask;
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int cnt, ret;
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private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
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if (!private)
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return -ENOMEM;
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init_waitqueue_head(&private->wait);
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spin_lock_init(&private->lock);
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dev_set_drvdata(dev->dev, dev);
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dev->dev_private = (void *)private;
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/* the first real CRTC device is used for all dma mapping operations */
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private->dma_dev = exynos_drm_get_dma_device();
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if (!private->dma_dev) {
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DRM_ERROR("no device found for DMA mapping operations.\n");
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ret = -ENODEV;
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goto err_free_private;
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}
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DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",
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dev_name(private->dma_dev));
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/* create common IOMMU mapping for all devices attached to Exynos DRM */
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ret = drm_create_iommu_mapping(dev);
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if (ret < 0) {
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DRM_ERROR("failed to create iommu mapping.\n");
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goto err_free_private;
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}
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drm_mode_config_init(dev);
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exynos_drm_mode_config_init(dev);
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/* setup possible_clones. */
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cnt = 0;
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clone_mask = 0;
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
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clone_mask |= (1 << (cnt++));
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
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encoder->possible_clones = clone_mask;
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platform_set_drvdata(dev->platformdev, dev);
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/* Try to bind all sub drivers. */
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ret = component_bind_all(dev->dev, dev);
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if (ret)
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goto err_mode_config_cleanup;
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ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
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if (ret)
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goto err_unbind_all;
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/* Probe non kms sub drivers and virtual display driver. */
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ret = exynos_drm_device_subdrv_probe(dev);
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if (ret)
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goto err_cleanup_vblank;
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drm_mode_config_reset(dev);
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/*
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* enable drm irq mode.
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* - with irq_enabled = true, we can use the vblank feature.
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*
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* P.S. note that we wouldn't use drm irq handler but
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* just specific driver own one instead because
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* drm framework supports only one irq handler.
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*/
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dev->irq_enabled = true;
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/* init kms poll for handling hpd */
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drm_kms_helper_poll_init(dev);
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/* force connectors detection */
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drm_helper_hpd_irq_event(dev);
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return 0;
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err_cleanup_vblank:
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drm_vblank_cleanup(dev);
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err_unbind_all:
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component_unbind_all(dev->dev, dev);
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err_mode_config_cleanup:
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drm_mode_config_cleanup(dev);
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drm_release_iommu_mapping(dev);
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err_free_private:
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kfree(private);
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return ret;
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}
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static void exynos_drm_unload(struct drm_device *dev)
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{
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exynos_drm_device_subdrv_remove(dev);
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exynos_drm_fbdev_fini(dev);
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drm_kms_helper_poll_fini(dev);
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drm_vblank_cleanup(dev);
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component_unbind_all(dev->dev, dev);
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drm_mode_config_cleanup(dev);
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drm_release_iommu_mapping(dev);
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kfree(dev->dev_private);
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dev->dev_private = NULL;
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}
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int exynos_atomic_check(struct drm_device *dev,
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struct drm_atomic_state *state)
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{
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int ret;
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ret = drm_atomic_helper_check_modeset(dev, state);
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if (ret)
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return ret;
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ret = drm_atomic_normalize_zpos(dev, state);
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if (ret)
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return ret;
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ret = drm_atomic_helper_check_planes(dev, state);
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if (ret)
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return ret;
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return ret;
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}
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static int exynos_drm_open(struct drm_device *dev, struct drm_file *file)
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{
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struct drm_exynos_file_private *file_priv;
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int ret;
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file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
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if (!file_priv)
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return -ENOMEM;
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file->driver_priv = file_priv;
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ret = exynos_drm_subdrv_open(dev, file);
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if (ret)
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goto err_file_priv_free;
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return ret;
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err_file_priv_free:
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kfree(file_priv);
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file->driver_priv = NULL;
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return ret;
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}
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static void exynos_drm_preclose(struct drm_device *dev,
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struct drm_file *file)
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{
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exynos_drm_subdrv_close(dev, file);
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}
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static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
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{
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kfree(file->driver_priv);
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file->driver_priv = NULL;
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}
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static void exynos_drm_lastclose(struct drm_device *dev)
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{
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exynos_drm_fbdev_restore_mode(dev);
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}
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static const struct vm_operations_struct exynos_drm_gem_vm_ops = {
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.fault = exynos_drm_gem_fault,
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.open = drm_gem_vm_open,
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.close = drm_gem_vm_close,
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};
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static const struct drm_ioctl_desc exynos_ioctls[] = {
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DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP, exynos_drm_gem_map_ioctl,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET, exynos_drm_gem_get_ioctl,
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DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION, vidi_connection_ioctl,
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DRM_AUTH),
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DRM_IOCTL_DEF_DRV(EXYNOS_G2D_GET_VER, exynos_g2d_get_ver_ioctl,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_G2D_SET_CMDLIST, exynos_g2d_set_cmdlist_ioctl,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_G2D_EXEC, exynos_g2d_exec_ioctl,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_IPP_GET_PROPERTY, exynos_drm_ipp_get_property,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_IPP_SET_PROPERTY, exynos_drm_ipp_set_property,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_IPP_QUEUE_BUF, exynos_drm_ipp_queue_buf,
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DRM_AUTH | DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(EXYNOS_IPP_CMD_CTRL, exynos_drm_ipp_cmd_ctrl,
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DRM_AUTH | DRM_RENDER_ALLOW),
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};
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static const struct file_operations exynos_drm_driver_fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.mmap = exynos_drm_gem_mmap,
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.poll = drm_poll,
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.read = drm_read,
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.unlocked_ioctl = drm_ioctl,
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.compat_ioctl = drm_compat_ioctl,
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.release = drm_release,
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};
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static struct drm_driver exynos_drm_driver = {
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.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME
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| DRIVER_ATOMIC | DRIVER_RENDER,
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.load = exynos_drm_load,
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.unload = exynos_drm_unload,
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.open = exynos_drm_open,
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.preclose = exynos_drm_preclose,
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.lastclose = exynos_drm_lastclose,
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.postclose = exynos_drm_postclose,
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.get_vblank_counter = drm_vblank_no_hw_counter,
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.enable_vblank = exynos_drm_crtc_enable_vblank,
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.disable_vblank = exynos_drm_crtc_disable_vblank,
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.gem_free_object_unlocked = exynos_drm_gem_free_object,
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.gem_vm_ops = &exynos_drm_gem_vm_ops,
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.dumb_create = exynos_drm_gem_dumb_create,
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.dumb_map_offset = exynos_drm_gem_dumb_map_offset,
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.dumb_destroy = drm_gem_dumb_destroy,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_export = drm_gem_prime_export,
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.gem_prime_import = drm_gem_prime_import,
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.gem_prime_get_sg_table = exynos_drm_gem_prime_get_sg_table,
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.gem_prime_import_sg_table = exynos_drm_gem_prime_import_sg_table,
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.gem_prime_vmap = exynos_drm_gem_prime_vmap,
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.gem_prime_vunmap = exynos_drm_gem_prime_vunmap,
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.gem_prime_mmap = exynos_drm_gem_prime_mmap,
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.ioctls = exynos_ioctls,
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.num_ioctls = ARRAY_SIZE(exynos_ioctls),
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.fops = &exynos_drm_driver_fops,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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};
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#ifdef CONFIG_PM_SLEEP
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static int exynos_drm_suspend(struct device *dev)
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{
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struct drm_device *drm_dev = dev_get_drvdata(dev);
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struct drm_connector *connector;
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if (pm_runtime_suspended(dev) || !drm_dev)
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return 0;
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drm_modeset_lock_all(drm_dev);
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drm_for_each_connector(connector, drm_dev) {
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int old_dpms = connector->dpms;
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if (connector->funcs->dpms)
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connector->funcs->dpms(connector, DRM_MODE_DPMS_OFF);
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/* Set the old mode back to the connector for resume */
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connector->dpms = old_dpms;
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}
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drm_modeset_unlock_all(drm_dev);
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return 0;
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}
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static int exynos_drm_resume(struct device *dev)
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{
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struct drm_device *drm_dev = dev_get_drvdata(dev);
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struct drm_connector *connector;
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if (pm_runtime_suspended(dev) || !drm_dev)
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return 0;
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drm_modeset_lock_all(drm_dev);
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drm_for_each_connector(connector, drm_dev) {
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if (connector->funcs->dpms) {
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int dpms = connector->dpms;
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connector->dpms = DRM_MODE_DPMS_OFF;
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connector->funcs->dpms(connector, dpms);
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}
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}
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drm_modeset_unlock_all(drm_dev);
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return 0;
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}
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#endif
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static const struct dev_pm_ops exynos_drm_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(exynos_drm_suspend, exynos_drm_resume)
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};
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/* forward declaration */
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static struct platform_driver exynos_drm_platform_driver;
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struct exynos_drm_driver_info {
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struct platform_driver *driver;
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unsigned int flags;
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};
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#define DRM_COMPONENT_DRIVER BIT(0) /* supports component framework */
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#define DRM_VIRTUAL_DEVICE BIT(1) /* create virtual platform device */
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#define DRM_DMA_DEVICE BIT(2) /* can be used for dma allocations */
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#define DRV_PTR(drv, cond) (IS_ENABLED(cond) ? &drv : NULL)
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/*
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* Connector drivers should not be placed before associated crtc drivers,
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* because connector requires pipe number of its crtc during initialization.
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*/
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static struct exynos_drm_driver_info exynos_drm_drivers[] = {
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{
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DRV_PTR(fimd_driver, CONFIG_DRM_EXYNOS_FIMD),
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DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
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}, {
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DRV_PTR(exynos5433_decon_driver, CONFIG_DRM_EXYNOS5433_DECON),
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DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
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}, {
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DRV_PTR(decon_driver, CONFIG_DRM_EXYNOS7_DECON),
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DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
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}, {
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DRV_PTR(mixer_driver, CONFIG_DRM_EXYNOS_MIXER),
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DRM_COMPONENT_DRIVER | DRM_DMA_DEVICE
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}, {
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DRV_PTR(mic_driver, CONFIG_DRM_EXYNOS_MIC),
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DRM_COMPONENT_DRIVER
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}, {
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DRV_PTR(dp_driver, CONFIG_DRM_EXYNOS_DP),
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DRM_COMPONENT_DRIVER
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}, {
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DRV_PTR(dsi_driver, CONFIG_DRM_EXYNOS_DSI),
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DRM_COMPONENT_DRIVER
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}, {
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DRV_PTR(hdmi_driver, CONFIG_DRM_EXYNOS_HDMI),
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DRM_COMPONENT_DRIVER
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}, {
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DRV_PTR(vidi_driver, CONFIG_DRM_EXYNOS_VIDI),
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DRM_COMPONENT_DRIVER | DRM_VIRTUAL_DEVICE
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}, {
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DRV_PTR(g2d_driver, CONFIG_DRM_EXYNOS_G2D),
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}, {
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DRV_PTR(fimc_driver, CONFIG_DRM_EXYNOS_FIMC),
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}, {
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DRV_PTR(rotator_driver, CONFIG_DRM_EXYNOS_ROTATOR),
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}, {
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DRV_PTR(gsc_driver, CONFIG_DRM_EXYNOS_GSC),
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}, {
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DRV_PTR(ipp_driver, CONFIG_DRM_EXYNOS_IPP),
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DRM_VIRTUAL_DEVICE
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}, {
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&exynos_drm_platform_driver,
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DRM_VIRTUAL_DEVICE
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}
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};
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static int compare_dev(struct device *dev, void *data)
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{
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return dev == (struct device *)data;
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}
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static struct component_match *exynos_drm_match_add(struct device *dev)
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{
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struct component_match *match = NULL;
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int i;
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for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
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struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
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struct device *p = NULL, *d;
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if (!info->driver || !(info->flags & DRM_COMPONENT_DRIVER))
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continue;
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while ((d = bus_find_device(&platform_bus_type, p,
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&info->driver->driver,
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(void *)platform_bus_type.match))) {
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put_device(p);
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component_match_add(dev, &match, compare_dev, d);
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p = d;
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}
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put_device(p);
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}
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return match ?: ERR_PTR(-ENODEV);
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}
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static int exynos_drm_bind(struct device *dev)
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{
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return drm_platform_init(&exynos_drm_driver, to_platform_device(dev));
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}
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static void exynos_drm_unbind(struct device *dev)
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{
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drm_put_dev(dev_get_drvdata(dev));
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}
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static const struct component_master_ops exynos_drm_ops = {
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.bind = exynos_drm_bind,
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.unbind = exynos_drm_unbind,
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};
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static int exynos_drm_platform_probe(struct platform_device *pdev)
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{
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struct component_match *match;
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pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
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exynos_drm_driver.num_ioctls = ARRAY_SIZE(exynos_ioctls);
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match = exynos_drm_match_add(&pdev->dev);
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if (IS_ERR(match))
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return PTR_ERR(match);
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return component_master_add_with_match(&pdev->dev, &exynos_drm_ops,
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match);
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}
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static int exynos_drm_platform_remove(struct platform_device *pdev)
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{
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component_master_del(&pdev->dev, &exynos_drm_ops);
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return 0;
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}
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static struct platform_driver exynos_drm_platform_driver = {
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.probe = exynos_drm_platform_probe,
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.remove = exynos_drm_platform_remove,
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.driver = {
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.name = "exynos-drm",
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.pm = &exynos_drm_pm_ops,
|
|
},
|
|
};
|
|
|
|
static struct device *exynos_drm_get_dma_device(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(exynos_drm_drivers); ++i) {
|
|
struct exynos_drm_driver_info *info = &exynos_drm_drivers[i];
|
|
struct device *dev;
|
|
|
|
if (!info->driver || !(info->flags & DRM_DMA_DEVICE))
|
|
continue;
|
|
|
|
while ((dev = bus_find_device(&platform_bus_type, NULL,
|
|
&info->driver->driver,
|
|
(void *)platform_bus_type.match))) {
|
|
put_device(dev);
|
|
return dev;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
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 = bus_find_device(&platform_bus_type, NULL,
|
|
&info->driver->driver,
|
|
(void *)platform_bus_type.match))) {
|
|
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;
|
|
|
|
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");
|