shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-10 04:48:04 +09:00
Code Issues Packages Projects Releases Wiki Activity

drm/rocckhip: add support dmabuf begin/end cpu access

Browse Source 
Change-Id: I82bf5b2bca4c3b9ee6b31f8541c627c4406a7242
Signed-off-by: Sandy Huang <hjc@rock-chips.com>
This commit is contained in:
Sandy Huang
2020-07-21 11:04:29 +08:00
committed by Tao Huang
parent df47abdafa
commit 039b272443
1 changed files with 52 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
View File

@@ -21,6 +21,7 @@
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_of.h>
#include <linux/devfreq.h>
#include <linux/dma-buf.h>
#include <linux/dma-mapping.h>
#include <linux/dma-iommu.h>
#include <linux/genalloc.h>
@@ -1653,6 +1654,56 @@ static const struct file_operations rockchip_drm_driver_fops = {
.release = drm_release,
};
static int rockchip_drm_gem_dmabuf_begin_cpu_access(struct dma_buf *dma_buf,
enum dma_data_direction dir)
{
struct drm_gem_object *obj = dma_buf->priv;
return rockchip_gem_prime_begin_cpu_access(obj, dir);
}
static int rockchip_drm_gem_dmabuf_end_cpu_access(struct dma_buf *dma_buf,
enum dma_data_direction dir)
{
struct drm_gem_object *obj = dma_buf->priv;
return rockchip_gem_prime_end_cpu_access(obj, dir);
}
static const struct dma_buf_ops rockchip_drm_gem_prime_dmabuf_ops = {
.attach = drm_gem_map_attach,
.detach = drm_gem_map_detach,
.map_dma_buf = drm_gem_map_dma_buf,
.unmap_dma_buf = drm_gem_unmap_dma_buf,
.release = drm_gem_dmabuf_release,
.map = drm_gem_dmabuf_kmap,
.unmap = drm_gem_dmabuf_kunmap,
.mmap = drm_gem_dmabuf_mmap,
.vmap = drm_gem_dmabuf_vmap,
.vunmap = drm_gem_dmabuf_vunmap,
.begin_cpu_access = rockchip_drm_gem_dmabuf_begin_cpu_access,
.end_cpu_access = rockchip_drm_gem_dmabuf_end_cpu_access,
};
static struct dma_buf *rockchip_drm_gem_prime_export(struct drm_device *dev,
struct drm_gem_object *obj,
int flags)
{
struct dma_buf_export_info exp_info = {
.exp_name = KBUILD_MODNAME, /* white lie for debug */
.owner = dev->driver->fops->owner,
.ops = &rockchip_drm_gem_prime_dmabuf_ops,
.size = obj->size,
.flags = flags,
.priv = obj,
};
if (dev->driver->gem_prime_res_obj)
exp_info.resv = dev->driver->gem_prime_res_obj(obj);
return drm_gem_dmabuf_export(dev, &exp_info);
}
static struct drm_driver rockchip_drm_driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM |
DRIVER_PRIME | DRIVER_ATOMIC |
@@ -1668,14 +1719,12 @@ static struct drm_driver rockchip_drm_driver = {
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_export = rockchip_drm_gem_prime_export,
.gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
.gem_prime_import_sg_table = rockchip_gem_prime_import_sg_table,
.gem_prime_vmap = rockchip_gem_prime_vmap,
.gem_prime_vunmap = rockchip_gem_prime_vunmap,
.gem_prime_mmap = rockchip_gem_mmap_buf,
.gem_prime_begin_cpu_access = rockchip_gem_prime_begin_cpu_access,
.gem_prime_end_cpu_access = rockchip_gem_prime_end_cpu_access,
#ifdef CONFIG_DEBUG_FS
.debugfs_init = rockchip_drm_debugfs_init,
#endif