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drm/ast: Initialized data needed to map fbdev memory

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Due to a missing initialization there was no way to map fbdev memory.
Thus for example using the Xserver with the fbdev driver failed.
This fix adds initialization for fix.smem_start and fix.smem_len
in the fb_info structure, which fixes this problem.

Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: stable@vger.kernel.org
Signed-off-by: Egbert Eich <eich@suse.de>
[pulled from SuSE tree by me - airlied]
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Egbert Eich 2014-06-11 14:59:55 +02:00 committed by Dave Airlie
parent 2565df91a2
commit 28fb4cb7fa
4 changed files with 11 additions and 0 deletions
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1
drivers/gpu/drm/ast/ast_drv.h
View File

@ -315,6 +315,7 @@ int ast_framebuffer_init(struct drm_device *dev,
int ast_fbdev_init(struct drm_device *dev);
void ast_fbdev_fini(struct drm_device *dev);
void ast_fbdev_set_suspend(struct drm_device *dev, int state);
void ast_fbdev_set_base(struct ast_private *ast, unsigned long gpu_addr);
struct ast_bo {
struct ttm_buffer_object bo;

7
drivers/gpu/drm/ast/ast_fb.c
View File

@ -365,3 +365,10 @@ void ast_fbdev_set_suspend(struct drm_device *dev, int state)
drm_fb_helper_set_suspend(&ast->fbdev->helper, state);
}
void ast_fbdev_set_base(struct ast_private *ast, unsigned long gpu_addr)
{
ast->fbdev->helper.fbdev->fix.smem_start =
ast->fbdev->helper.fbdev->apertures->ranges[0].base + gpu_addr;
ast->fbdev->helper.fbdev->fix.smem_len = ast->vram_size - gpu_addr;
}

1
drivers/gpu/drm/ast/ast_main.c
View File

@ -448,6 +448,7 @@ int ast_driver_load(struct drm_device *dev, unsigned long flags)
dev->mode_config.min_height = 0;
dev->mode_config.preferred_depth = 24;
dev->mode_config.prefer_shadow = 1;
dev->mode_config.fb_base = pci_resource_start(ast->dev->pdev, 0);
if (ast->chip == AST2100 ||
ast->chip == AST2200 ||

2
drivers/gpu/drm/ast/ast_mode.c
View File

@ -547,6 +547,8 @@ static int ast_crtc_do_set_base(struct drm_crtc *crtc,
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
if (ret)
DRM_ERROR("failed to kmap fbcon\n");
else
ast_fbdev_set_base(ast, gpu_addr);
}
ast_bo_unreserve(bo);