xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/ast: POST chip at probe time if VGA not enabled

Browse Source 
We need to do it on machines without a BIOS such as POWER8. Also
for detection to work without triggering PCIe errors, we need
to enable VGA early on, inside ast_detect_chip().

While touching those files, replace a few hard coded register
numbers with the corresponding symbolic constant.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Benjamin Herrenschmidt
2014-09-04 17:50:11 +10:00
committed by Dave Airlie
parent 0dd68309b9
commit d1b985572a
3 changed files with 62 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/ast/ast_drv.h
View File

@@ -384,6 +384,9 @@ int ast_bo_push_sysram(struct ast_bo *bo);
int ast_mmap(struct file *filp, struct vm_area_struct *vma);
/* ast post */
void ast_enable_vga(struct drm_device *dev);
void ast_enable_mmio(struct drm_device *dev);
bool ast_is_vga_enabled(struct drm_device *dev);
void ast_post_gpu(struct drm_device *dev);
u32 ast_mindwm(struct ast_private *ast, u32 r);
void ast_moutdwm(struct ast_private *ast, u32 r, u32 v);