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drm/rockchip: fb: add support alloc fb for logo

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we need to store some private data for logo display, so we extend the
rockchip_drm_logo_fb from drm_framebuffer.

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: Ic6ba63b33b07b8dca9aa59b9bdb4137f4af0cda0
This commit is contained in:
Sandy Huang
2021-07-26 19:21:22 +08:00
committed by Tao Huang
parent a3e8f0be68
commit 7730f2ade7
2 changed files with 67 additions and 1 deletions
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55
drivers/gpu/drm/rockchip/rockchip_drm_fb.c
View File

@@ -20,8 +20,30 @@
#include "rockchip_drm_fb.h"
#include "rockchip_drm_gem.h"
static bool is_rockchip_logo_fb(struct drm_framebuffer *fb)
{
return fb->flags & ROCKCHIP_DRM_MODE_LOGO_FB ? true : false;
}
static void rockchip_drm_fb_destroy(struct drm_framebuffer *fb)
{
int i = 0;
for (i = 0; i < 4; i++)
drm_gem_object_put(fb->obj[i]);
drm_framebuffer_cleanup(fb);
if (is_rockchip_logo_fb(fb)) {
struct rockchip_drm_logo_fb *rockchip_logo_fb = to_rockchip_logo_fb(fb);
kfree(rockchip_logo_fb);
} else {
kfree(fb);
}
}
static const struct drm_framebuffer_funcs rockchip_drm_fb_funcs = {
.destroy = drm_gem_fb_destroy,
.destroy = rockchip_drm_fb_destroy,
.create_handle = drm_gem_fb_create_handle,
.dirty = drm_atomic_helper_dirtyfb,
};
@@ -55,6 +77,37 @@ rockchip_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cm
return fb;
}
struct drm_framebuffer *
rockchip_drm_logo_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
struct rockchip_logo *logo)
{
int ret = 0;
struct rockchip_drm_logo_fb *rockchip_logo_fb;
struct drm_framebuffer *fb;
rockchip_logo_fb = kzalloc(sizeof(*rockchip_logo_fb), GFP_KERNEL);
if (!rockchip_logo_fb)
return ERR_PTR(-ENOMEM);
fb = &rockchip_logo_fb->fb;
drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
ret = drm_framebuffer_init(dev, fb, &rockchip_drm_fb_funcs);
if (ret) {
DRM_DEV_ERROR(dev->dev,
"Failed to initialize rockchip logo fb: %d\n",
ret);
kfree(rockchip_logo_fb);
return ERR_PTR(ret);
}
fb->flags |= ROCKCHIP_DRM_MODE_LOGO_FB;
rockchip_logo_fb->logo = logo;
logo->count++;
return &rockchip_logo_fb->fb;
}
static int rockchip_drm_bandwidth_atomic_check(struct drm_device *dev,
struct drm_atomic_state *state,
struct dmcfreq_vop_info *vop_info)

13
drivers/gpu/drm/rockchip/rockchip_drm_fb.h
View File

@@ -7,6 +7,8 @@
#ifndef _ROCKCHIP_DRM_FB_H
#define _ROCKCHIP_DRM_FB_H
#define ROCKCHIP_DRM_MODE_LOGO_FB (1<<31) /* used for kernel logo, follow the define: DRM_MODE_FB_MODIFIERS at drm_mode.h */
struct drm_framebuffer *
rockchip_drm_framebuffer_init(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode_cmd,
@@ -14,4 +16,15 @@ rockchip_drm_framebuffer_init(struct drm_device *dev,
void rockchip_drm_framebuffer_fini(struct drm_framebuffer *fb);
void rockchip_drm_mode_config_init(struct drm_device *dev);
struct drm_framebuffer *
rockchip_drm_logo_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd,
struct rockchip_logo *logo);
#define to_rockchip_logo_fb(x) container_of(x, struct rockchip_drm_logo_fb, fb)
struct rockchip_drm_logo_fb {
struct drm_framebuffer fb;
struct rockchip_logo *logo;
};
#endif /* _ROCKCHIP_DRM_FB_H */