diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_aux.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c index 83d97dfe328f..28631714f697 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -615,7 +615,8 @@ int dce_aux_transfer_dmub_raw(struct ddc_service *ddc, } #define AUX_MAX_RETRIES 7 -#define AUX_MAX_DEFER_RETRIES 7 +#define AUX_MIN_DEFER_RETRIES 7 +#define AUX_MAX_DEFER_TIMEOUT_MS 50 #define AUX_MAX_I2C_DEFER_RETRIES 7 #define AUX_MAX_INVALID_REPLY_RETRIES 2 #define AUX_MAX_TIMEOUT_RETRIES 3 @@ -628,6 +629,10 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, bool payload_reply = true; enum aux_return_code_type operation_result; bool retry_on_defer = false; + struct ddc *ddc_pin = ddc->ddc_pin; + struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + struct aux_engine_dce110 *aux110 = FROM_AUX_ENGINE(aux_engine); + uint32_t defer_time_in_ms = 0; int aux_ack_retries = 0, aux_defer_retries = 0, @@ -660,19 +665,27 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, break; case AUX_TRANSACTION_REPLY_AUX_DEFER: + /* polling_timeout_period is in us */ + defer_time_in_ms += aux110->polling_timeout_period / 1000; + ++aux_defer_retries; + /* fall through */ case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER: retry_on_defer = true; fallthrough; case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK: - if (++aux_defer_retries >= AUX_MAX_DEFER_RETRIES) { + if (aux_defer_retries >= AUX_MIN_DEFER_RETRIES + && defer_time_in_ms >= AUX_MAX_DEFER_TIMEOUT_MS) { goto fail; } else { if ((*payload->reply == AUX_TRANSACTION_REPLY_AUX_DEFER) || (*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER)) { - if (payload->defer_delay > 1) + if (payload->defer_delay > 1) { msleep(payload->defer_delay); - else if (payload->defer_delay <= 1) + defer_time_in_ms += payload->defer_delay; + } else if (payload->defer_delay <= 1) { udelay(payload->defer_delay * 1000); + defer_time_in_ms += payload->defer_delay; + } } } break; @@ -701,7 +714,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, // Check whether a DEFER had occurred before the timeout. // If so, treat timeout as a DEFER. if (retry_on_defer) { - if (++aux_defer_retries >= AUX_MAX_DEFER_RETRIES) + if (++aux_defer_retries >= AUX_MIN_DEFER_RETRIES) goto fail; else if (payload->defer_delay > 0) msleep(payload->defer_delay); |