From: Zeyu Fan Date: Thu, 16 Feb 2017 16:15:30 -0500 Subject: drm/amd/display: Add query_ddc_data function Git-commit: 2b230ea3e76f6238b31fd270cab76d55394f3293 Patch-mainline: v4.15-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 Signed-off-by: Zeyu Fan Reviewed-by: Charlene Liu Acked-by: Harry Wentland Signed-off-by: Alex Deucher Acked-by: Petr Tesarik --- drivers/gpu/drm/amd/display/dc/core/dc.c | 25 +++++++++++++++++++++++++ drivers/gpu/drm/amd/display/dc/dc.h | 11 ++++++++++- 2 files changed, 35 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1725,6 +1725,31 @@ bool dc_read_dpcd( return r == DDC_RESULT_SUCESSFULL; } +bool dc_query_ddc_data( + struct dc *dc, + uint32_t link_index, + uint32_t address, + uint8_t *write_buf, + uint32_t write_size, + uint8_t *read_buf, + uint32_t read_size) { + + struct core_dc *core_dc = DC_TO_CORE(dc); + + struct core_link *link = core_dc->links[link_index]; + + bool result = dal_ddc_service_query_ddc_data( + link->ddc, + address, + write_buf, + write_size, + read_buf, + read_size); + + return result; +} + + bool dc_write_dpcd( struct dc *dc, uint32_t link_index, --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -720,7 +720,16 @@ bool dc_write_dpcd( uint32_t link_index, uint32_t address, const uint8_t *data, - uint32_t size); + uint32_t size); + +bool dc_query_ddc_data( + struct dc *dc, + uint32_t link_index, + uint32_t address, + uint8_t *write_buf, + uint32_t write_size, + uint8_t *read_buf, + uint32_t read_size); bool dc_submit_i2c( struct dc *dc,