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Diffstat (limited to 'drivers/gpu/drm/udl')
-rw-r--r--drivers/gpu/drm/udl/udl_drv.c17
-rw-r--r--drivers/gpu/drm/udl/udl_drv.h1
-rw-r--r--drivers/gpu/drm/udl/udl_main.c10
-rw-r--r--drivers/gpu/drm/udl/udl_modeset.c34
4 files changed, 41 insertions, 21 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index 9269092697d8..5703277c6f52 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -32,6 +32,22 @@ static int udl_usb_resume(struct usb_interface *interface)
return drm_mode_config_helper_resume(dev);
}
+/*
+ * FIXME: Dma-buf sharing requires DMA support by the importing device.
+ * This function is a workaround to make USB devices work as well.
+ * See todo.rst for how to fix the issue in the dma-buf framework.
+ */
+static struct drm_gem_object *udl_driver_gem_prime_import(struct drm_device *dev,
+ struct dma_buf *dma_buf)
+{
+ struct udl_device *udl = to_udl(dev);
+
+ if (!udl->dmadev)
+ return ERR_PTR(-ENODEV);
+
+ return drm_gem_prime_import_dev(dev, dma_buf, udl->dmadev);
+}
+
DEFINE_DRM_GEM_FOPS(udl_driver_fops);
static const struct drm_driver driver = {
@@ -40,6 +56,7 @@ static const struct drm_driver driver = {
/* GEM hooks */
.fops = &udl_driver_fops,
DRM_GEM_SHMEM_DRIVER_OPS,
+ .gem_prime_import = udl_driver_gem_prime_import,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
diff --git a/drivers/gpu/drm/udl/udl_drv.h b/drivers/gpu/drm/udl/udl_drv.h
index 875e73551ae9..cc16a13316e4 100644
--- a/drivers/gpu/drm/udl/udl_drv.h
+++ b/drivers/gpu/drm/udl/udl_drv.h
@@ -50,6 +50,7 @@ struct urb_list {
struct udl_device {
struct drm_device drm;
struct device *dev;
+ struct device *dmadev;
struct drm_simple_display_pipe display_pipe;
diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
index 0e2a376cb075..853f147036f6 100644
--- a/drivers/gpu/drm/udl/udl_main.c
+++ b/drivers/gpu/drm/udl/udl_main.c
@@ -315,6 +315,10 @@ int udl_init(struct udl_device *udl)
DRM_DEBUG("\n");
+ udl->dmadev = usb_intf_get_dma_device(to_usb_interface(dev->dev));
+ if (!udl->dmadev)
+ drm_warn(dev, "buffer sharing not supported"); /* not an error */
+
mutex_init(&udl->gem_lock);
if (!udl_parse_vendor_descriptor(udl)) {
@@ -343,12 +347,18 @@ int udl_init(struct udl_device *udl)
err:
if (udl->urbs.count)
udl_free_urb_list(dev);
+ put_device(udl->dmadev);
DRM_ERROR("%d\n", ret);
return ret;
}
int udl_drop_usb(struct drm_device *dev)
{
+ struct udl_device *udl = to_udl(dev);
+
udl_free_urb_list(dev);
+ put_device(udl->dmadev);
+ udl->dmadev = NULL;
+
return 0;
}
diff --git a/drivers/gpu/drm/udl/udl_modeset.c b/drivers/gpu/drm/udl/udl_modeset.c
index 9d34ec9d03f6..8d98bf69d075 100644
--- a/drivers/gpu/drm/udl/udl_modeset.c
+++ b/drivers/gpu/drm/udl/udl_modeset.c
@@ -15,6 +15,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_damage_helper.h>
#include <drm/drm_fourcc.h>
+#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_shmem_helper.h>
#include <drm/drm_modeset_helper_vtables.h>
@@ -266,18 +267,17 @@ static int udl_aligned_damage_clip(struct drm_rect *clip, int x, int y,
return 0;
}
-static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
- int width, int height)
+static int udl_handle_damage(struct drm_framebuffer *fb, const struct dma_buf_map *map,
+ int x, int y, int width, int height)
{
struct drm_device *dev = fb->dev;
struct dma_buf_attachment *import_attach = fb->obj[0]->import_attach;
+ void *vaddr = map->vaddr; /* TODO: Use mapping abstraction properly */
int i, ret, tmp_ret;
char *cmd;
struct urb *urb;
struct drm_rect clip;
int log_bpp;
- struct dma_buf_map map;
- void *vaddr;
ret = udl_log_cpp(fb->format->cpp[0]);
if (ret < 0)
@@ -297,17 +297,10 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
return ret;
}
- ret = drm_gem_shmem_vmap(fb->obj[0], &map);
- if (ret) {
- DRM_ERROR("failed to vmap fb\n");
- goto out_dma_buf_end_cpu_access;
- }
- vaddr = map.vaddr; /* TODO: Use mapping abstraction properly */
-
urb = udl_get_urb(dev);
if (!urb) {
ret = -ENOMEM;
- goto out_drm_gem_shmem_vunmap;
+ goto out_dma_buf_end_cpu_access;
}
cmd = urb->transfer_buffer;
@@ -320,7 +313,7 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
&cmd, byte_offset, dev_byte_offset,
byte_width);
if (ret)
- goto out_drm_gem_shmem_vunmap;
+ goto out_dma_buf_end_cpu_access;
}
if (cmd > (char *)urb->transfer_buffer) {
@@ -336,8 +329,6 @@ static int udl_handle_damage(struct drm_framebuffer *fb, int x, int y,
ret = 0;
-out_drm_gem_shmem_vunmap:
- drm_gem_shmem_vunmap(fb->obj[0], &map);
out_dma_buf_end_cpu_access:
if (import_attach) {
tmp_ret = dma_buf_end_cpu_access(import_attach->dmabuf,
@@ -375,6 +366,7 @@ udl_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe,
struct drm_framebuffer *fb = plane_state->fb;
struct udl_device *udl = to_udl(dev);
struct drm_display_mode *mode = &crtc_state->mode;
+ struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(plane_state);
char *buf;
char *wrptr;
int color_depth = UDL_COLOR_DEPTH_16BPP;
@@ -400,7 +392,7 @@ udl_simple_display_pipe_enable(struct drm_simple_display_pipe *pipe,
udl->mode_buf_len = wrptr - buf;
- udl_handle_damage(fb, 0, 0, fb->width, fb->height);
+ udl_handle_damage(fb, &shadow_plane_state->map[0], 0, 0, fb->width, fb->height);
if (!crtc_state->mode_changed)
return;
@@ -435,6 +427,7 @@ udl_simple_display_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *old_plane_state)
{
struct drm_plane_state *state = pipe->plane.state;
+ struct drm_shadow_plane_state *shadow_plane_state = to_drm_shadow_plane_state(state);
struct drm_framebuffer *fb = state->fb;
struct drm_rect rect;
@@ -442,17 +435,16 @@ udl_simple_display_pipe_update(struct drm_simple_display_pipe *pipe,
return;
if (drm_atomic_helper_damage_merged(old_plane_state, state, &rect))
- udl_handle_damage(fb, rect.x1, rect.y1, rect.x2 - rect.x1,
- rect.y2 - rect.y1);
+ udl_handle_damage(fb, &shadow_plane_state->map[0], rect.x1, rect.y1,
+ rect.x2 - rect.x1, rect.y2 - rect.y1);
}
-static const
-struct drm_simple_display_pipe_funcs udl_simple_display_pipe_funcs = {
+static const struct drm_simple_display_pipe_funcs udl_simple_display_pipe_funcs = {
.mode_valid = udl_simple_display_pipe_mode_valid,
.enable = udl_simple_display_pipe_enable,
.disable = udl_simple_display_pipe_disable,
.update = udl_simple_display_pipe_update,
- .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb,
+ DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS,
};
/*
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-06 13:09:16 +0000