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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Thomas ZimmermannandInki Dae
b9bb45aeaf
The only caller of exynos_drm_framebuffer_init() is the helper exynos_user_fb_create() from the same source file. Declare the former as static. Tidy up the header's include statements. v2: - clean up the includes in the header file (Chen-Yu) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
138 lines
3.6 KiB
C
138 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* exynos_drm_fbdev.c
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*
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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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#include <linux/fb.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_prime.h>
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#include <drm/drm_print.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_fb.h"
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#include "exynos_drm_fbdev.h"
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#include "exynos_drm_gem.h"
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#define MAX_CONNECTOR 4
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static int exynos_drm_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
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{
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struct drm_fb_helper *helper = info->par;
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struct drm_gem_object *obj = drm_gem_fb_get_obj(helper->fb, 0);
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return drm_gem_prime_mmap(obj, vma);
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}
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static void exynos_drm_fb_destroy(struct fb_info *info)
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{
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struct drm_fb_helper *fb_helper = info->par;
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drm_fb_helper_fini(fb_helper);
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drm_client_buffer_delete(fb_helper->buffer);
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drm_client_release(&fb_helper->client);
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}
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static const struct fb_ops exynos_drm_fb_ops = {
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.owner = THIS_MODULE,
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__FB_DEFAULT_DMAMEM_OPS_RDWR,
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DRM_FB_HELPER_DEFAULT_OPS,
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__FB_DEFAULT_DMAMEM_OPS_DRAW,
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.fb_mmap = exynos_drm_fb_mmap,
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.fb_destroy = exynos_drm_fb_destroy,
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};
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static const struct drm_fb_helper_funcs exynos_drm_fbdev_helper_funcs = {
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};
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int exynos_drm_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct drm_client_dev *client = &helper->client;
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struct drm_device *dev = client->dev;
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struct drm_file *file = client->file;
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struct fb_info *info = helper->info;
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u32 fourcc, pitch;
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u64 size;
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const struct drm_format_info *format;
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struct exynos_drm_gem *exynos_gem;
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struct drm_gem_object *obj;
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struct drm_client_buffer *buffer;
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u32 handle;
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int ret;
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DRM_DEV_DEBUG_KMS(dev->dev,
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"surface width(%d), height(%d) and bpp(%d\n",
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sizes->surface_width, sizes->surface_height,
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sizes->surface_bpp);
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fourcc = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
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if (fourcc == DRM_FORMAT_INVALID)
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return -EINVAL;
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format = drm_get_format_info(dev, fourcc, DRM_FORMAT_MOD_LINEAR);
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if (!format)
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return -EINVAL;
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pitch = drm_format_info_min_pitch(format, 0, sizes->surface_width);
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if (!pitch)
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return -EINVAL;
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if (check_mul_overflow(pitch, sizes->surface_height, &size))
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return -EINVAL;
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size = ALIGN(size, PAGE_SIZE);
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if (size < PAGE_SIZE)
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return -EINVAL;
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exynos_gem = exynos_drm_gem_create(dev, EXYNOS_BO_WC, size, true);
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if (IS_ERR(exynos_gem))
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return PTR_ERR(exynos_gem);
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obj = &exynos_gem->base;
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ret = drm_gem_handle_create(file, obj, &handle);
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if (ret)
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goto err_drm_gem_object_put;
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buffer = drm_client_buffer_create(client, sizes->surface_width, sizes->surface_height,
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fourcc, handle, pitch);
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if (IS_ERR(buffer)) {
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ret = PTR_ERR(buffer);
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goto err_drm_gem_handle_delete;
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}
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helper->funcs = &exynos_drm_fbdev_helper_funcs;
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helper->buffer = buffer;
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helper->fb = buffer->fb;
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info->fbops = &exynos_drm_fb_ops;
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drm_fb_helper_fill_info(info, helper, sizes);
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info->flags |= FBINFO_VIRTFB;
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info->screen_buffer = exynos_gem->kvaddr;
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info->screen_size = obj->size;
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info->fix.smem_len = obj->size;
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/* The handle is only needed for creating the framebuffer. */
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drm_gem_handle_delete(file, handle);
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/* The framebuffer still holds a reference on the GEM object. */
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drm_gem_object_put(obj);
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return 0;
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err_drm_gem_handle_delete:
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drm_gem_handle_delete(file, handle);
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err_drm_gem_object_put:
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drm_gem_object_put(obj);
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return ret;
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}
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