// SPDX-License-Identifier: GPL-2.0-or-later
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/* Hisilicon Hibmc SoC drm driver
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*
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* Based on the bochs drm driver.
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*
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* Copyright (c) 2016 Huawei Limited.
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*
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* Author:
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* Rongrong Zou <zourongrong@huawei.com>
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* Rongrong Zou <zourongrong@gmail.com>
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* Jianhua Li <lijianhua@huawei.com>
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*/
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#include <linux/pci.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_gem.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_gem_vram_helper.h>
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#include <drm/drm_print.h>
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#include "hibmc_drm_drv.h"
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int hibmc_mm_init(struct hibmc_drm_private *hibmc)
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{
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struct drm_vram_mm *vmm;
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int ret;
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struct drm_device *dev = hibmc->dev;
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vmm = drm_vram_helper_alloc_mm(dev,
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pci_resource_start(dev->pdev, 0),
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hibmc->fb_size);
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if (IS_ERR(vmm)) {
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ret = PTR_ERR(vmm);
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drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
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return ret;
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}
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return 0;
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}
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void hibmc_mm_fini(struct hibmc_drm_private *hibmc)
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{
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if (!hibmc->dev->vram_mm)
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return;
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drm_vram_helper_release_mm(hibmc->dev);
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}
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int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
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struct drm_mode_create_dumb *args)
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{
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return drm_gem_vram_fill_create_dumb(file, dev, 0, 128, args);
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}
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const struct drm_mode_config_funcs hibmc_mode_funcs = {
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.mode_valid = drm_vram_helper_mode_valid,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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.fb_create = drm_gem_fb_create,
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};
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