From: Meenakshikumar Somasundaram Date: Wed, 10 Jul 2024 16:58:20 +0000 (-0400) Subject: drm/amd/display: Enable aux transfer path via dmub for dp tunneling X-Git-Tag: v6.12-rc1~126^2~17^2~256 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a72570491b524c9dc4c1caa7323b2297c27b0b7;p=thirdparty%2Fkernel%2Fstable.git drm/amd/display: Enable aux transfer path via dmub for dp tunneling [Why] Aux transfer retries path does not support dp tunneling. [How] Based on ddc pin check, aux will be issued in legacy path or DMUB. Signed-off-by: Meenakshikumar Somasundaram Reviewed-by: Eric Yang Tested-by: Daniel Wheeler Signed-off-by: Rodrigo Siqueira Signed-off-by: Alex Deucher --- 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 b8996d285f003..bb4ac5042c803 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -735,7 +735,15 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, (unsigned int) payload->mot); if (payload->write) dce_aux_log_payload(" write", payload->data, payload->length, 16); - ret = dce_aux_transfer_raw(ddc, payload, &operation_result); + + /* Check whether aux to be processed via dmub or dcn directly */ + if (ddc->ctx->dc->debug.enable_dmub_aux_for_legacy_ddc + || ddc->ddc_pin == NULL) { + ret = dce_aux_transfer_dmub_raw(ddc, payload, &operation_result); + } else { + ret = dce_aux_transfer_raw(ddc, payload, &operation_result); + } + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, LOG_FLAG_I2cAux_DceAux, "dce_aux_transfer_with_retries: link_index=%u: END: retry %d of %d: address=0x%04x length=%u write=%d mot=%d: ret=%d operation_result=%d payload->reply=%u",