drm/ast: astdp: Perform link training during atomic_enable

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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

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This commit is contained in:

Thomas Zimmermann 2024-07-17 16:24:19 +02:00

parent cbacb1b744

commit 2281475168

4 changed files with 26 additions and 25 deletions

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45

drivers/gpu/drm/ast/ast_dp.c

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1

drivers/gpu/drm/ast/ast_drv.h

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2

drivers/gpu/drm/ast/ast_mode.c

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3

drivers/gpu/drm/ast/ast_reg.h

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