drm/amd/display: Refine i2c frequency calculating sequence

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[Why]
In HG mode, vbios didn't call DispController_Init to program NV1x
XTAL_REF_DIV value when ASIC_INIT, but driver read XTAL_REF_DIV
to calculate i2c reference frequency. it cause i2c frequency change
from 100kHz to 200kHz.

[How]
remove get_speed function and calculate reference frequency at
set_speed functiton.

Signed-off-by: Lewis Huang <Lewis.Huang@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Lewis Huang 2020-01-11 00:51:15 +08:00 • committed by Alex Deucher

parent 887ff12198

commit 9eeec26a13

1 changed files with 19 additions and 49 deletions

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drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c

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