diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c index bb526ad326e5..0afd2fa57bbe 100644 --- a/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c +++ b/drivers/gpu/drm/amd/display/dc/i2caux/aux_engine.c @@ -128,8 +128,20 @@ static void process_read_reply( ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR; ctx->operation_succeeded = false; + } else if (ctx->returned_byte < ctx->current_read_length) { + ctx->current_read_length -= ctx->returned_byte; + + ctx->offset += ctx->returned_byte; + + ++ctx->invalid_reply_retry_aux_on_ack; + + if (ctx->invalid_reply_retry_aux_on_ack > + AUX_INVALID_REPLY_RETRY_COUNTER) { + ctx->status = + I2CAUX_TRANSACTION_STATUS_FAILED_PROTOCOL_ERROR; + ctx->operation_succeeded = false; + } } else { - ctx->current_read_length = ctx->returned_byte; ctx->status = I2CAUX_TRANSACTION_STATUS_SUCCEEDED; ctx->transaction_complete = true; ctx->operation_succeeded = true; @@ -157,6 +169,10 @@ static void process_read_reply( ctx->operation_succeeded = false; } break; + case AUX_TRANSACTION_REPLY_HPD_DISCON: + ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON; + ctx->operation_succeeded = false; + break; default: ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN; ctx->operation_succeeded = false; @@ -215,6 +231,10 @@ static void process_read_request( * so we should not wait here */ } break; + case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON: + ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON; + ctx->operation_succeeded = false; + break; default: ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN; ctx->operation_succeeded = false; @@ -282,7 +302,6 @@ static bool read_command( ctx.operation_succeeded); } - request->payload.length = ctx.reply.length; return ctx.operation_succeeded; } @@ -370,6 +389,10 @@ static void process_write_reply( ctx->operation_succeeded = false; } break; + case AUX_TRANSACTION_REPLY_HPD_DISCON: + ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON; + ctx->operation_succeeded = false; + break; default: ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN; ctx->operation_succeeded = false; @@ -422,6 +445,10 @@ static void process_write_request( * so we should not wait here */ } break; + case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON: + ctx->status = I2CAUX_TRANSACTION_STATUS_FAILED_HPD_DISCON; + ctx->operation_succeeded = false; + break; default: ctx->status = I2CAUX_TRANSACTION_STATUS_UNKNOWN; ctx->operation_succeeded = false; |