Contributors: 14
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Thomas Zimmermann |
381 |
57.73% |
12 |
31.58% |
| Thierry Reding |
118 |
17.88% |
11 |
28.95% |
| Arto Merilainen |
106 |
16.06% |
1 |
2.63% |
| Daniel Stone |
25 |
3.79% |
2 |
5.26% |
| Sam Ravnborg |
8 |
1.21% |
1 |
2.63% |
| Daniel Vetter |
8 |
1.21% |
3 |
7.89% |
| Ville Syrjälä |
4 |
0.61% |
1 |
2.63% |
| Christian König |
3 |
0.45% |
1 |
2.63% |
| Laurent Pinchart |
2 |
0.30% |
1 |
2.63% |
| Thomas Gleixner |
1 |
0.15% |
1 |
2.63% |
| Jani Nikula |
1 |
0.15% |
1 |
2.63% |
| Terje Bergstrom |
1 |
0.15% |
1 |
2.63% |
| Danilo Krummrich |
1 |
0.15% |
1 |
2.63% |
| Souptick Joarder |
1 |
0.15% |
1 |
2.63% |
| Total |
660 |
|
38 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2012-2013 Avionic Design GmbH
* Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
*
* Based on the KMS/FB DMA helpers
* Copyright (C) 2012 Analog Devices Inc.
*/
#include <linux/console.h>
#include <linux/fb.h>
#include <linux/vmalloc.h>
#include <drm/drm_drv.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_modeset_helper.h>
#include "drm.h"
#include "gem.h"
static int tegra_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
{
struct drm_fb_helper *helper = info->par;
struct tegra_bo *bo;
int err;
bo = tegra_fb_get_plane(helper->fb, 0);
err = drm_gem_mmap_obj(&bo->gem, bo->gem.size, vma);
if (err < 0)
return err;
return __tegra_gem_mmap(&bo->gem, vma);
}
static void tegra_fbdev_fb_destroy(struct fb_info *info)
{
struct drm_fb_helper *helper = info->par;
struct tegra_bo *bo = tegra_fb_get_plane(helper->fb, 0);
drm_fb_helper_fini(helper);
/* Undo the special mapping we made in fbdev probe. */
if (bo->pages) {
vunmap(bo->vaddr);
bo->vaddr = NULL;
}
drm_client_buffer_delete(helper->buffer);
drm_client_release(&helper->client);
}
static const struct fb_ops tegra_fb_ops = {
.owner = THIS_MODULE,
__FB_DEFAULT_DMAMEM_OPS_RDWR,
DRM_FB_HELPER_DEFAULT_OPS,
__FB_DEFAULT_DMAMEM_OPS_DRAW,
.fb_mmap = tegra_fb_mmap,
.fb_destroy = tegra_fbdev_fb_destroy,
};
static const struct drm_fb_helper_funcs tegra_fbdev_helper_funcs = {
};
int tegra_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_client_dev *client = &helper->client;
struct drm_device *drm = client->dev;
struct drm_file *file = client->file;
struct tegra_drm *tegra = drm->dev_private;
struct fb_info *info = helper->info;
u32 fourcc, pitch;
u64 size;
const struct drm_format_info *format;
struct tegra_bo *bo;
struct drm_gem_object *gem;
u32 handle;
struct drm_client_buffer *buffer;
int err;
fourcc = drm_mode_legacy_fb_format(sizes->surface_bpp, sizes->surface_depth);
format = drm_get_format_info(drm, fourcc, DRM_FORMAT_MOD_LINEAR);
pitch = round_up(drm_format_info_min_pitch(format, 0, sizes->surface_width),
tegra->pitch_align);
size = ALIGN(pitch * sizes->surface_height, PAGE_SIZE);
bo = tegra_bo_create(drm, size, 0);
if (IS_ERR(bo))
return PTR_ERR(bo);
gem = &bo->gem;
err = drm_gem_handle_create(file, gem, &handle);
if (err)
goto err_drm_gem_object_put;
buffer = drm_client_buffer_create(client, sizes->surface_width, sizes->surface_height,
fourcc, handle, pitch);
if (IS_ERR(buffer)) {
err = PTR_ERR(buffer);
goto err_drm_gem_handle_delete;
}
helper->funcs = &tegra_fbdev_helper_funcs;
helper->buffer = buffer;
helper->fb = buffer->fb;
info->fbops = &tegra_fb_ops;
drm_fb_helper_fill_info(info, helper, sizes);
if (bo->pages) {
bo->vaddr = vmap(bo->pages, bo->num_pages, VM_MAP,
pgprot_writecombine(PAGE_KERNEL));
if (!bo->vaddr) {
dev_err(drm->dev, "failed to vmap() framebuffer\n");
err = -ENOMEM;
goto err_drm_client_buffer_delete;
}
}
info->flags |= FBINFO_VIRTFB;
info->screen_buffer = bo->vaddr;
info->screen_size = gem->size;
info->fix.smem_start = (unsigned long)(bo->iova);
info->fix.smem_len = gem->size;
/* The handle is only needed for creating the framebuffer. */
drm_gem_handle_delete(file, handle);
/* The framebuffer still holds a reference on the GEM object. */
drm_gem_object_put(gem);
return 0;
err_drm_client_buffer_delete:
drm_client_buffer_delete(buffer);
err_drm_gem_handle_delete:
drm_gem_handle_delete(file, handle);
err_drm_gem_object_put:
drm_gem_object_put(gem);
return err;
}