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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-07-17 16:24:19 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-07-30 12:15:37 +0200 |
| commit | 2281475168d2ab3fbd763c2fd762f99a411fa1b6 (patch) | |
| tree | ec53dd17b217a5453c8583e810dfe9ac4406cf89 /drivers/gpu/drm/ast/ast_drv.h | |
| parent | drm/ast: astdp: Only test HDP state in ast_astdp_is_connected() (diff) | |
| download | linux-2281475168d2ab3fbd763c2fd762f99a411fa1b6.tar.xz linux-2281475168d2ab3fbd763c2fd762f99a411fa1b6.zip | |
drm/ast: astdp: Perform link training during atomic_enable
The place for link training is in the encoder's atomic_enable
helper. Remove all related tests from other helper ASTDP functions;
especially ast_astdp_is_connected(), which tests HPD status.
DP link training is controlled by the firmware. A status flag reports
success or failure. The process can be fragile on Aspeed hardware. Moving
the test from connector detection to the atomic_enable allows for several
retries and a longer timeout.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240717143319.104012-5-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/ast/ast_drv.h')
| -rw-r--r-- | drivers/gpu/drm/ast/ast_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h index 80e968f15fc9..b54a89676e9f 100644 --- a/drivers/gpu/drm/ast/ast_drv.h +++ b/drivers/gpu/drm/ast/ast_drv.h @@ -473,6 +473,7 @@ bool ast_astdp_is_connected(struct ast_device *ast); int ast_astdp_read_edid(struct drm_device *dev, u8 *ediddata); int ast_dp_launch(struct ast_device *ast); void ast_dp_power_on_off(struct drm_device *dev, bool no); +void ast_dp_link_training(struct ast_device *ast); void ast_dp_set_on_off(struct drm_device *dev, bool no); void ast_dp_set_mode(struct drm_crtc *crtc, struct ast_vbios_mode_info *vbios_mode); |