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drm/amd/display: BL setting save/restore

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Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Charlene Liu 2018-01-15 23:22:51 -05:00 committed by Alex Deucher
parent d89746ec4f
commit c3b1c061f4
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/amd/display/dc/dce/dce_abm.c
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@ -323,6 +323,15 @@ static bool dce_abm_immediate_disable(struct abm *abm)
/* notifyDMCUMsg */
REG_UPDATE(MASTER_COMM_CNTL_REG, MASTER_COMM_INTERRUPT, 1);
abm->stored_backlight_registers.BL_PWM_CNTL =
REG_READ(BL_PWM_CNTL);
abm->stored_backlight_registers.BL_PWM_CNTL2 =
REG_READ(BL_PWM_CNTL2);
abm->stored_backlight_registers.BL_PWM_PERIOD_CNTL =
REG_READ(BL_PWM_PERIOD_CNTL);
REG_GET(LVTMA_PWRSEQ_REF_DIV, BL_PWM_REF_DIV,
&abm->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV);
return true;
}