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drm/i915: split fb allocation and initialization v2

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If we use a stolen buffer, our probe callback shouldn't allocate a new
buffer; we should re-use the one from the BIOS instead if possible.

v2: fix locking (Jesse)

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jesse Barnes 2013-11-25 15:51:16 -08:00 committed by Daniel Vetter
parent 67e5871be8
commit 8b4f49e039
1 changed files with 46 additions and 16 deletions
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62
drivers/gpu/drm/i915/intel_fbdev.c
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@ -57,18 +57,14 @@ static struct fb_ops intelfb_ops = {
.fb_debug_leave = drm_fb_helper_debug_leave,
};
static int intelfb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
static int intelfb_alloc(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct intel_fbdev *ifbdev =
container_of(helper, struct intel_fbdev, helper);
struct drm_device *dev = helper->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_mode_fb_cmd2 mode_cmd = {};
struct drm_i915_gem_object *obj;
struct device *device = &dev->pdev->dev;
int size, ret;
/* we don't do packed 24bpp */
@ -94,8 +90,6 @@ static int intelfb_create(struct drm_fb_helper *helper,
goto out;
}
mutex_lock(&dev->struct_mutex);
/* Flush everything out, we'll be doing GTT only from now on */
ret = intel_pin_and_fence_fb_obj(dev, obj, NULL);
if (ret) {
@ -103,7 +97,49 @@ static int intelfb_create(struct drm_fb_helper *helper,
goto out_unref;
}
info = framebuffer_alloc(0, device);
ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
if (ret)
goto out_unpin;
return 0;
out_unpin:
i915_gem_object_unpin(obj);
out_unref:
drm_gem_object_unreference(&obj->base);
out:
return ret;
}
static int intelfb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct intel_fbdev *ifbdev =
container_of(helper, struct intel_fbdev, helper);
struct intel_framebuffer *intel_fb = &ifbdev->ifb;
struct drm_device *dev = helper->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_i915_gem_object *obj;
int size, ret;
mutex_lock(&dev->struct_mutex);
if (!intel_fb->obj) {
DRM_ERROR("no BIOS fb, allocating a new one\n");
ret = intelfb_alloc(helper, sizes);
if (ret)
goto out_unlock;
} else {
sizes->fb_width = intel_fb->base.width;
sizes->fb_height = intel_fb->base.height;
}
obj = intel_fb->obj;
size = obj->base.size;
info = framebuffer_alloc(0, &dev->pdev->dev);
if (!info) {
ret = -ENOMEM;
goto out_unpin;
@ -111,10 +147,6 @@ static int intelfb_create(struct drm_fb_helper *helper,
info->par = helper;
ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
if (ret)
goto out_unpin;
fb = &ifbdev->ifb.base;
ifbdev->helper.fb = fb;
@ -170,17 +202,15 @@ static int intelfb_create(struct drm_fb_helper *helper,
fb->width, fb->height,
i915_gem_obj_ggtt_offset(obj), obj);
mutex_unlock(&dev->struct_mutex);
vga_switcheroo_client_fb_set(dev->pdev, info);
return 0;
out_unpin:
i915_gem_object_unpin(obj);
out_unref:
drm_gem_object_unreference(&obj->base);
out_unlock:
mutex_unlock(&dev->struct_mutex);
out:
return ret;
}