diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c index aefd29a440b5..b984eecca58b 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c @@ -503,7 +503,7 @@ bool dal_ddc_service_query_ddc_data( uint8_t *read_buf, uint32_t read_size) { - bool ret = false; + bool success = true; uint32_t payload_size = dal_ddc_service_is_in_aux_transaction_mode(ddc) ? DEFAULT_AUX_MAX_DATA_SIZE : EDID_SEGMENT_SIZE; @@ -527,7 +527,6 @@ bool dal_ddc_service_query_ddc_data( * but we want to read 256 over i2c!!!!*/ if (dal_ddc_service_is_in_aux_transaction_mode(ddc)) { struct aux_payload payload; - bool read_available = true; payload.i2c_over_aux = true; payload.address = address; @@ -536,21 +535,26 @@ bool dal_ddc_service_query_ddc_data( if (write_size != 0) { payload.write = true; - payload.mot = false; + /* should not set mot (middle of transaction) to 0 + * if there are pending read payloads + */ + payload.mot = read_size == 0 ? false : true; payload.length = write_size; payload.data = write_buf; - ret = dal_ddc_submit_aux_command(ddc, &payload); - read_available = ret; + success = dal_ddc_submit_aux_command(ddc, &payload); } - if (read_size != 0 && read_available) { + if (read_size != 0 && success) { payload.write = false; + /* should set mot (middle of transaction) to 0 + * since it is the last payload to send + */ payload.mot = false; payload.length = read_size; payload.data = read_buf; - ret = dal_ddc_submit_aux_command(ddc, &payload); + success = dal_ddc_submit_aux_command(ddc, &payload); } } else { struct i2c_command command = {0}; @@ -573,7 +577,7 @@ bool dal_ddc_service_query_ddc_data( command.number_of_payloads = dal_ddc_i2c_payloads_get_count(&payloads); - ret = dm_helpers_submit_i2c( + success = dm_helpers_submit_i2c( ddc->ctx, ddc->link, &command); @@ -581,7 +585,7 @@ bool dal_ddc_service_query_ddc_data( dal_ddc_i2c_payloads_destroy(&payloads); } - return ret; + return success; } bool dal_ddc_submit_aux_command(struct ddc_service *ddc, @@ -598,7 +602,7 @@ bool dal_ddc_submit_aux_command(struct ddc_service *ddc, do { struct aux_payload current_payload; - bool is_end_of_payload = (retrieved + DEFAULT_AUX_MAX_DATA_SIZE) > + bool is_end_of_payload = (retrieved + DEFAULT_AUX_MAX_DATA_SIZE) >= payload->length; current_payload.address = payload->address; @@ -607,7 +611,10 @@ bool dal_ddc_submit_aux_command(struct ddc_service *ddc, current_payload.i2c_over_aux = payload->i2c_over_aux; current_payload.length = is_end_of_payload ? payload->length - retrieved : DEFAULT_AUX_MAX_DATA_SIZE; - current_payload.mot = !is_end_of_payload; + /* set mot (middle of transaction) to false + * if it is the last payload + */ + current_payload.mot = is_end_of_payload ? payload->mot:true; current_payload.reply = payload->reply; current_payload.write = payload->write; @@ -648,16 +655,17 @@ bool dc_link_aux_transfer_with_retries(struct ddc_service *ddc, } -uint32_t dc_link_aux_configure_timeout(struct ddc_service *ddc, +bool dc_link_aux_try_to_configure_timeout(struct ddc_service *ddc, uint32_t timeout) { - uint32_t prev_timeout = 0; + bool result = false; struct ddc *ddc_pin = ddc->ddc_pin; - if (ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout) - prev_timeout = - ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout(ddc, timeout); - return prev_timeout; + if (ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout) { + ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]->funcs->configure_timeout(ddc, timeout); + result = true; + } + return result; } /*test only function*/ |