2015-09-01 Gustavo Padovan <gustavo@xxxxxxxxxxx>:
> 2015-09-01 Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>:
>
> > This modifies exynos_drm_framebuffer_init() to be possible to support
> > multiple buffers. Then it can be used by exynos_user_fb_create().
> >
> > Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/exynos/exynos_drm_fb.c | 36 +++++++++++++++++--------------
> > drivers/gpu/drm/exynos/exynos_drm_fb.h | 5 ++++-
> > drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 3 +--
> > 3 files changed, 25 insertions(+), 19 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.c b/drivers/gpu/drm/exynos/exynos_drm_fb.c
> > index 5cee148..8e5d3eb 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_fb.c
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.c
> > @@ -23,7 +23,6 @@
> > #include "exynos_drm_drv.h"
> > #include "exynos_drm_fb.h"
> > #include "exynos_drm_fbdev.h"
> > -#include "exynos_drm_gem.h"
> > #include "exynos_drm_iommu.h"
> > #include "exynos_drm_crtc.h"
> >
> > @@ -134,36 +133,41 @@ unsigned int exynos_drm_fb_get_buf_cnt(struct drm_framebuffer *fb)
> > struct drm_framebuffer *
> > exynos_drm_framebuffer_init(struct drm_device *dev,
> > struct drm_mode_fb_cmd2 *mode_cmd,
> > - struct drm_gem_object *obj)
> > + struct exynos_drm_gem_obj **gem_obj,
> > + int count)
> > {
> > struct exynos_drm_fb *exynos_fb;
> > - struct exynos_drm_gem_obj *exynos_gem_obj;
> > + int i;
> > int ret;
> >
> > - exynos_gem_obj = to_exynos_gem_obj(obj);
> > -
> > - ret = check_fb_gem_memory_type(dev, exynos_gem_obj);
> > - if (ret < 0)
> > - return ERR_PTR(ret);
> > -
> > exynos_fb = kzalloc(sizeof(*exynos_fb), GFP_KERNEL);
> > if (!exynos_fb)
> > return ERR_PTR(-ENOMEM);
> >
> > - drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd);
> > - exynos_fb->exynos_gem_obj[0] = exynos_gem_obj;
> > + exynos_fb->buf_cnt = count;
> > + DRM_DEBUG_KMS("buf_cnt = %d\n", exynos_fb->buf_cnt);
> >
> > - /* buffer count to framebuffer always is 1 at booting time. */
> > - exynos_fb->buf_cnt = 1;
> > + for (i = 0; i < count; i++) {
> > + ret = check_fb_gem_memory_type(dev, gem_obj[i]);
> > + if (ret < 0)
> > + goto err;
> > +
> > + exynos_fb->exynos_gem_obj[i] = gem_obj[i];
> > + }
> > +
> > + drm_helper_mode_fill_fb_struct(&exynos_fb->fb, mode_cmd);
> >
> > ret = drm_framebuffer_init(dev, &exynos_fb->fb, &exynos_drm_fb_funcs);
> > - if (ret) {
> > - kfree(exynos_fb);
> > + if (ret < 0) {
> > DRM_ERROR("failed to initialize framebuffer\n");
> > - return ERR_PTR(ret);
> > + goto err;
> > }
> >
> > return &exynos_fb->fb;
> > +
> > +err:
> > + kfree(exynos_fb);
> > + return ERR_PTR(ret);
> > }
> >
> > static struct drm_framebuffer *
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fb.h b/drivers/gpu/drm/exynos/exynos_drm_fb.h
> > index 897d2cf..8900f6b 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_fb.h
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_fb.h
> > @@ -14,10 +14,13 @@
> > #ifndef _EXYNOS_DRM_FB_H_
> > #define _EXYNOS_DRM_FB_H
> >
> > +#include "exynos_drm_gem.h"
> > +
> > struct drm_framebuffer *
> > exynos_drm_framebuffer_init(struct drm_device *dev,
> > struct drm_mode_fb_cmd2 *mode_cmd,
> > - struct drm_gem_object *obj);
> > + struct exynos_drm_gem_obj **gem_obj,
> > + int count);
> >
> > /* get gem object of a drm framebuffer */
> > struct exynos_drm_gem_obj *exynos_drm_fb_gem_obj(struct drm_framebuffer *fb,
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> > index 133cf5f..a221f75 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> > @@ -21,7 +21,6 @@
> > #include "exynos_drm_drv.h"
> > #include "exynos_drm_fb.h"
> > #include "exynos_drm_fbdev.h"
> > -#include "exynos_drm_gem.h"
> > #include "exynos_drm_iommu.h"
> >
> > #define MAX_CONNECTOR 4
> > @@ -160,7 +159,7 @@ static int exynos_drm_fbdev_create(struct drm_fb_helper *helper,
> >
> > exynos_fbdev->obj = obj;
> >
> > - helper->fb = exynos_drm_framebuffer_init(dev, &mode_cmd, &obj->base);
> > + helper->fb = exynos_drm_framebuffer_init(dev, &mode_cmd, &obj, 1);
>
> Do you have any use for this for multiple buffers? I don't see any patch
> in this series for multiple buffers. I think we should wait for a user
> of multiple buffers to apply this patch.
Ah, just saw it.
Reviewed-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
Gustavo
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