[PATCH v3 02/22] drm/fb-cma-helper: Use drm_gem_framebuffer_helper
Noralf Trønnes
noralf at tronnes.org
Sun Aug 13 13:31:45 UTC 2017
Use the new drm_gem_framebuffer_helper who's code was copied
from this helper.
Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
---
drivers/gpu/drm/drm_fb_cma_helper.c | 181 ++++++------------------------------
1 file changed, 30 insertions(+), 151 deletions(-)
diff --git a/drivers/gpu/drm/drm_fb_cma_helper.c b/drivers/gpu/drm/drm_fb_cma_helper.c
index ade319d..e1befee 100644
--- a/drivers/gpu/drm/drm_fb_cma_helper.c
+++ b/drivers/gpu/drm/drm_fb_cma_helper.c
@@ -18,27 +18,17 @@
*/
#include <drm/drmP.h>
-#include <drm/drm_atomic.h>
-#include <drm/drm_crtc.h>
#include <drm/drm_fb_helper.h>
-#include <drm/drm_crtc_helper.h>
+#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_fb_cma_helper.h>
-#include <linux/dma-buf.h>
-#include <linux/dma-mapping.h>
#include <linux/module.h>
-#include <linux/reservation.h>
#define DEFAULT_FBDEFIO_DELAY_MS 50
-struct drm_fb_cma {
- struct drm_framebuffer fb;
- struct drm_gem_cma_object *obj[4];
-};
-
struct drm_fbdev_cma {
struct drm_fb_helper fb_helper;
- struct drm_fb_cma *fb;
const struct drm_framebuffer_funcs *fb_funcs;
};
@@ -90,69 +80,19 @@ static inline struct drm_fbdev_cma *to_fbdev_cma(struct drm_fb_helper *helper)
return container_of(helper, struct drm_fbdev_cma, fb_helper);
}
-static inline struct drm_fb_cma *to_fb_cma(struct drm_framebuffer *fb)
-{
- return container_of(fb, struct drm_fb_cma, fb);
-}
-
void drm_fb_cma_destroy(struct drm_framebuffer *fb)
{
- struct drm_fb_cma *fb_cma = to_fb_cma(fb);
- int i;
-
- for (i = 0; i < 4; i++) {
- if (fb_cma->obj[i])
- drm_gem_object_put_unlocked(&fb_cma->obj[i]->base);
- }
-
- drm_framebuffer_cleanup(fb);
- kfree(fb_cma);
+ drm_gem_fb_destroy(fb);
}
EXPORT_SYMBOL(drm_fb_cma_destroy);
int drm_fb_cma_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv, unsigned int *handle)
{
- struct drm_fb_cma *fb_cma = to_fb_cma(fb);
-
- return drm_gem_handle_create(file_priv,
- &fb_cma->obj[0]->base, handle);
+ return drm_gem_fb_create_handle(fb, file_priv, handle);
}
EXPORT_SYMBOL(drm_fb_cma_create_handle);
-static struct drm_framebuffer_funcs drm_fb_cma_funcs = {
- .destroy = drm_fb_cma_destroy,
- .create_handle = drm_fb_cma_create_handle,
-};
-
-static struct drm_fb_cma *drm_fb_cma_alloc(struct drm_device *dev,
- const struct drm_mode_fb_cmd2 *mode_cmd,
- struct drm_gem_cma_object **obj,
- unsigned int num_planes, const struct drm_framebuffer_funcs *funcs)
-{
- struct drm_fb_cma *fb_cma;
- int ret;
- int i;
-
- fb_cma = kzalloc(sizeof(*fb_cma), GFP_KERNEL);
- if (!fb_cma)
- return ERR_PTR(-ENOMEM);
-
- drm_helper_mode_fill_fb_struct(dev, &fb_cma->fb, mode_cmd);
-
- for (i = 0; i < num_planes; i++)
- fb_cma->obj[i] = obj[i];
-
- ret = drm_framebuffer_init(dev, &fb_cma->fb, funcs);
- if (ret) {
- dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", ret);
- kfree(fb_cma);
- return ERR_PTR(ret);
- }
-
- return fb_cma;
-}
-
/**
* drm_fb_cma_create_with_funcs() - helper function for the
* &drm_mode_config_funcs.fb_create
@@ -170,53 +110,7 @@ struct drm_framebuffer *drm_fb_cma_create_with_funcs(struct drm_device *dev,
struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd,
const struct drm_framebuffer_funcs *funcs)
{
- const struct drm_format_info *info;
- struct drm_fb_cma *fb_cma;
- struct drm_gem_cma_object *objs[4];
- struct drm_gem_object *obj;
- int ret;
- int i;
-
- info = drm_get_format_info(dev, mode_cmd);
- if (!info)
- return ERR_PTR(-EINVAL);
-
- for (i = 0; i < info->num_planes; i++) {
- unsigned int width = mode_cmd->width / (i ? info->hsub : 1);
- unsigned int height = mode_cmd->height / (i ? info->vsub : 1);
- unsigned int min_size;
-
- obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]);
- if (!obj) {
- dev_err(dev->dev, "Failed to lookup GEM object\n");
- ret = -ENOENT;
- goto err_gem_object_put;
- }
-
- min_size = (height - 1) * mode_cmd->pitches[i]
- + width * info->cpp[i]
- + mode_cmd->offsets[i];
-
- if (obj->size < min_size) {
- drm_gem_object_put_unlocked(obj);
- ret = -EINVAL;
- goto err_gem_object_put;
- }
- objs[i] = to_drm_gem_cma_obj(obj);
- }
-
- fb_cma = drm_fb_cma_alloc(dev, mode_cmd, objs, i, funcs);
- if (IS_ERR(fb_cma)) {
- ret = PTR_ERR(fb_cma);
- goto err_gem_object_put;
- }
-
- return &fb_cma->fb;
-
-err_gem_object_put:
- for (i--; i >= 0; i--)
- drm_gem_object_put_unlocked(&objs[i]->base);
- return ERR_PTR(ret);
+ return drm_gem_fb_create_with_funcs(dev, file_priv, mode_cmd, funcs);
}
EXPORT_SYMBOL_GPL(drm_fb_cma_create_with_funcs);
@@ -233,8 +127,7 @@ EXPORT_SYMBOL_GPL(drm_fb_cma_create_with_funcs);
struct drm_framebuffer *drm_fb_cma_create(struct drm_device *dev,
struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd)
{
- return drm_fb_cma_create_with_funcs(dev, file_priv, mode_cmd,
- &drm_fb_cma_funcs);
+ return drm_gem_fb_create(dev, file_priv, mode_cmd);
}
EXPORT_SYMBOL_GPL(drm_fb_cma_create);
@@ -250,12 +143,14 @@ EXPORT_SYMBOL_GPL(drm_fb_cma_create);
struct drm_gem_cma_object *drm_fb_cma_get_gem_obj(struct drm_framebuffer *fb,
unsigned int plane)
{
- struct drm_fb_cma *fb_cma = to_fb_cma(fb);
+ struct drm_gem_object *gem;
- if (plane >= 4)
+ gem = drm_gem_fb_get_obj(fb, plane);
+ if (!gem)
return NULL;
- return fb_cma->obj[plane];
+ return to_drm_gem_cma_obj(gem);
+
}
EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_obj);
@@ -272,13 +167,14 @@ dma_addr_t drm_fb_cma_get_gem_addr(struct drm_framebuffer *fb,
struct drm_plane_state *state,
unsigned int plane)
{
- struct drm_fb_cma *fb_cma = to_fb_cma(fb);
+ struct drm_gem_cma_object *obj;
dma_addr_t paddr;
- if (plane >= 4)
+ obj = drm_fb_cma_get_gem_obj(fb, plane);
+ if (!obj)
return 0;
- paddr = fb_cma->obj[plane]->paddr + fb->offsets[plane];
+ paddr = obj->paddr + fb->offsets[plane];
paddr += fb->format->cpp[plane] * (state->src_x >> 16);
paddr += fb->pitches[plane] * (state->src_y >> 16);
@@ -302,26 +198,13 @@ EXPORT_SYMBOL_GPL(drm_fb_cma_get_gem_addr);
int drm_fb_cma_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *state)
{
- struct dma_buf *dma_buf;
- struct dma_fence *fence;
-
- if ((plane->state->fb == state->fb) || !state->fb)
- return 0;
-
- dma_buf = drm_fb_cma_get_gem_obj(state->fb, 0)->base.dma_buf;
- if (dma_buf) {
- fence = reservation_object_get_excl_rcu(dma_buf->resv);
- drm_atomic_set_fence_for_plane(state, fence);
- }
-
- return 0;
+ return drm_gem_fb_prepare_fb(plane, state);
}
EXPORT_SYMBOL_GPL(drm_fb_cma_prepare_fb);
#ifdef CONFIG_DEBUG_FS
static void drm_fb_cma_describe(struct drm_framebuffer *fb, struct seq_file *m)
{
- struct drm_fb_cma *fb_cma = to_fb_cma(fb);
int i;
seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height,
@@ -330,7 +213,7 @@ static void drm_fb_cma_describe(struct drm_framebuffer *fb, struct seq_file *m)
for (i = 0; i < fb->format->num_planes; i++) {
seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
i, fb->offsets[i], fb->pitches[i]);
- drm_gem_cma_describe(fb_cma->obj[i], m);
+ drm_gem_cma_describe(drm_fb_cma_get_gem_obj(fb, i), m);
}
}
@@ -431,7 +314,6 @@ drm_fbdev_cma_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_fbdev_cma *fbdev_cma = to_fbdev_cma(helper);
- struct drm_mode_fb_cmd2 mode_cmd = { 0 };
struct drm_device *dev = helper->dev;
struct drm_gem_cma_object *obj;
struct drm_framebuffer *fb;
@@ -446,14 +328,7 @@ drm_fbdev_cma_create(struct drm_fb_helper *helper,
sizes->surface_bpp);
bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
-
- mode_cmd.width = sizes->surface_width;
- mode_cmd.height = sizes->surface_height;
- mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
- mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
- sizes->surface_depth);
-
- size = mode_cmd.pitches[0] * mode_cmd.height;
+ size = sizes->surface_width * sizes->surface_height * bytes_per_pixel;
obj = drm_gem_cma_create(dev, size);
if (IS_ERR(obj))
return -ENOMEM;
@@ -464,15 +339,14 @@ drm_fbdev_cma_create(struct drm_fb_helper *helper,
goto err_gem_free_object;
}
- fbdev_cma->fb = drm_fb_cma_alloc(dev, &mode_cmd, &obj, 1,
- fbdev_cma->fb_funcs);
- if (IS_ERR(fbdev_cma->fb)) {
+ fb = drm_gem_fbdev_fb_create(dev, sizes, 0, &obj->base,
+ fbdev_cma->fb_funcs);
+ if (IS_ERR(fb)) {
dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n");
- ret = PTR_ERR(fbdev_cma->fb);
+ ret = PTR_ERR(fb);
goto err_fb_info_destroy;
}
- fb = &fbdev_cma->fb->fb;
helper->fb = fb;
fbi->par = helper;
@@ -500,7 +374,7 @@ drm_fbdev_cma_create(struct drm_fb_helper *helper,
return 0;
err_cma_destroy:
- drm_framebuffer_remove(&fbdev_cma->fb->fb);
+ drm_framebuffer_remove(fb);
err_fb_info_destroy:
drm_fb_helper_fini(helper);
err_gem_free_object:
@@ -570,6 +444,11 @@ struct drm_fbdev_cma *drm_fbdev_cma_init_with_funcs(struct drm_device *dev,
}
EXPORT_SYMBOL_GPL(drm_fbdev_cma_init_with_funcs);
+static const struct drm_framebuffer_funcs drm_fb_cma_funcs = {
+ .destroy = drm_gem_fb_destroy,
+ .create_handle = drm_gem_fb_create_handle,
+};
+
/**
* drm_fbdev_cma_init() - Allocate and initializes a drm_fbdev_cma struct
* @dev: DRM device
@@ -597,8 +476,8 @@ void drm_fbdev_cma_fini(struct drm_fbdev_cma *fbdev_cma)
if (fbdev_cma->fb_helper.fbdev)
drm_fbdev_cma_defio_fini(fbdev_cma->fb_helper.fbdev);
- if (fbdev_cma->fb)
- drm_framebuffer_remove(&fbdev_cma->fb->fb);
+ if (fbdev_cma->fb_helper.fb)
+ drm_framebuffer_remove(fbdev_cma->fb_helper.fb);
drm_fb_helper_fini(&fbdev_cma->fb_helper);
kfree(fbdev_cma);
--
2.7.4
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