diff options
| author | Jammy Huang <jammy_huang@aspeedtech.com> | 2024-07-18 11:03:52 +0800 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-07-19 09:09:17 +0200 |
| commit | 12c35c5582acb0fd8f7713ffa75f450766022ff1 (patch) | |
| tree | 2bc6676938811183e5c49991f26dcbb2c2cd008b /drivers/gpu/drm/ast/ast_drv.c | |
| parent | 4ecc24a84d7e0254efd150ec23e0b89638386516 (diff) | |
drm/ast: Fix black screen after resume
Suspend will disable pcie device. Thus, resume should do full hw
initialization again.
Add some APIs to ast_drm_thaw() before ast_post_gpu() to fix the issue.
v2:
- fix function-call arguments
Fixes: 5b71707dd13c ("drm/ast: Enable and unlock device access early during init")
Reported-by: Cary Garrett <cogarre@gmail.com>
Closes: https://lore.kernel.org/dri-devel/8ce1e1cc351153a890b65e62fed93b54ccd43f6a.camel@gmail.com/
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v6.6+
Signed-off-by: Jammy Huang <jammy_huang@aspeedtech.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240718030352.654155-1-jammy_huang@aspeedtech.com
Diffstat (limited to 'drivers/gpu/drm/ast/ast_drv.c')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_drv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c index f8c49ba68e78..af2368f6f00f 100644 --- a/drivers/gpu/drm/ast/ast_drv.c +++ b/drivers/gpu/drm/ast/ast_drv.c @@ -391,6 +391,11 @@ static int ast_drm_freeze(struct drm_device *dev) static int ast_drm_thaw(struct drm_device *dev) { + struct ast_device *ast = to_ast_device(dev); + + ast_enable_vga(ast->ioregs); + ast_open_key(ast->ioregs); + ast_enable_mmio(dev->dev, ast->ioregs); ast_post_gpu(dev); return drm_mode_config_helper_resume(dev); |