diff options
Diffstat (limited to 'drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c')
-rw-r--r-- | drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c new file mode 100644 index 000000000000..77f075075db2 --- /dev/null +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Hisilicon Hibmc SoC drm driver + * + * Based on the bochs drm driver. + * + * Copyright (c) 2016 Huawei Limited. + * + * Author: + * Rongrong Zou <zourongrong@huawei.com> + * Rongrong Zou <zourongrong@gmail.com> + * Jianhua Li <lijianhua@huawei.com> + */ + +#include <linux/pci.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_gem.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_gem_vram_helper.h> +#include <drm/drm_print.h> + +#include "hibmc_drm_drv.h" + +int hibmc_mm_init(struct hibmc_drm_private *hibmc) +{ + struct drm_vram_mm *vmm; + int ret; + struct drm_device *dev = hibmc->dev; + struct pci_dev *pdev = to_pci_dev(dev->dev); + + vmm = drm_vram_helper_alloc_mm(dev, pci_resource_start(pdev, 0), + hibmc->fb_size); + if (IS_ERR(vmm)) { + ret = PTR_ERR(vmm); + drm_err(dev, "Error initializing VRAM MM; %d\n", ret); + return ret; + } + + return 0; +} + +void hibmc_mm_fini(struct hibmc_drm_private *hibmc) +{ + if (!hibmc->dev->vram_mm) + return; + + drm_vram_helper_release_mm(hibmc->dev); +} + +int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + return drm_gem_vram_fill_create_dumb(file, dev, 0, 128, args); +} + +const struct drm_mode_config_funcs hibmc_mode_funcs = { + .mode_valid = drm_vram_helper_mode_valid, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, + .fb_create = drm_gem_fb_create, +}; |