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drm/amd/display: make aux defer delay and aux sw start delay seperate

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[why]
1. defer delay and sw start delay has been mixed up, defer delay was
programmed to AUX_SW_CONTROL:AUX_SW_START_DELAY.
2. There's no delay for defer

[how]
1. Set  aux sw start to 0
2. Add delay for defer scenario

Signed-off-by: Xiaodong Yan <Xiaodong.Yan@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiaodong Yan 2019-08-30 17:07:01 +08:00 committed by Alex Deucher
parent ce10a0f39b
commit 33fd29007d
1 changed files with 9 additions and 2 deletions
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11
drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
View File

@ -475,7 +475,7 @@ int dce_aux_transfer_raw(struct ddc_service *ddc,
aux_req.action = i2caux_action_from_payload(payload);
aux_req.address = payload->address;
aux_req.delay = payload->defer_delay * 10;
aux_req.delay = 0;
aux_req.length = payload->length;
aux_req.data = payload->data;
@ -544,8 +544,15 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
case AUX_TRANSACTION_REPLY_AUX_DEFER:
case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK:
case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER:
if (++aux_defer_retries >= AUX_MAX_DEFER_RETRIES)
if (++aux_defer_retries >= AUX_MAX_DEFER_RETRIES) {
goto fail;
} else {
if ((*payload->reply == AUX_TRANSACTION_REPLY_AUX_DEFER) ||
(*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER)) {
if (payload->defer_delay > 0)
msleep(payload->defer_delay);
}
}
break;
case AUX_TRANSACTION_REPLY_I2C_DEFER: