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 | 357 |
1 files changed, 306 insertions, 51 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 743042d5905a..673bb87d2c17 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c @@ -23,14 +23,13 @@ * */ -#include <linux/delay.h> -#include <linux/slab.h> - #include "dm_services.h" #include "core_types.h" #include "dce_aux.h" #include "dce/dce_11_0_sh_mask.h" #include "dm_event_log.h" +#include "dm_helpers.h" +#include "dmub/inc/dmub_cmd.h" #define CTX \ aux110->base.ctx @@ -40,6 +39,11 @@ #define DC_LOGGER \ engine->ctx->logger +#define DC_TRACE_LEVEL_MESSAGE(...) do { } while (0) +#define IS_DC_I2CAUX_LOGGING_ENABLED() (false) +#define LOG_FLAG_Error_I2cAux LOG_ERROR +#define LOG_FLAG_I2cAux_DceAux LOG_I2C_AUX + #include "reg_helper.h" #undef FN @@ -69,6 +73,8 @@ enum { #define DEFAULT_AUX_ENGINE_MULT 0 #define DEFAULT_AUX_ENGINE_LENGTH 69 +#define DC_TRACE_LEVEL_MESSAGE(...) do { } while (0) + static void release_engine( struct dce_aux *engine) { @@ -78,7 +84,8 @@ static void release_engine( engine->ddc = NULL; - REG_UPDATE(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1); + REG_UPDATE_2(AUX_ARB_CONTROL, AUX_SW_DONE_USING_AUX_REG, 1, + AUX_SW_USE_AUX_REG_REQ, 0); } #define SW_CAN_ACCESS_AUX 1 @@ -324,7 +331,7 @@ static int read_channel_reply(struct dce_aux *engine, uint32_t size, return 0; } -static enum aux_channel_operation_result get_channel_status( +static enum aux_return_code_type get_channel_status( struct dce_aux *engine, uint8_t *returned_bytes) { @@ -335,7 +342,7 @@ static enum aux_channel_operation_result get_channel_status( if (returned_bytes == NULL) { /*caller pass NULL pointer*/ ASSERT_CRITICAL(false); - return AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN; + return AUX_RET_ERROR_UNKNOWN; } *returned_bytes = 0; @@ -346,7 +353,7 @@ static enum aux_channel_operation_result get_channel_status( value = REG_READ(AUX_SW_STATUS); /* in case HPD is LOW, exit AUX transaction */ if ((value & AUX_SW_STATUS__AUX_SW_HPD_DISCON_MASK)) - return AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON; + return AUX_RET_ERROR_HPD_DISCON; /* Note that the following bits are set in 'status.bits' * during CTS 4.2.1.2 (FW 3.3.1): @@ -359,14 +366,14 @@ static enum aux_channel_operation_result get_channel_status( if (value & AUX_SW_STATUS__AUX_SW_DONE_MASK) { if ((value & AUX_SW_STATUS__AUX_SW_RX_TIMEOUT_STATE_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_TIMEOUT_MASK)) - return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT; + return AUX_RET_ERROR_TIMEOUT; else if ((value & AUX_SW_STATUS__AUX_SW_RX_INVALID_STOP_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_RECV_NO_DET_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_RECV_INVALID_H_MASK) || (value & AUX_SW_STATUS__AUX_SW_RX_RECV_INVALID_L_MASK)) - return AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY; + return AUX_RET_ERROR_INVALID_REPLY; *returned_bytes = get_reg_field_value(value, AUX_SW_STATUS, @@ -374,26 +381,20 @@ static enum aux_channel_operation_result get_channel_status( if (*returned_bytes == 0) return - AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY; + AUX_RET_ERROR_INVALID_REPLY; else { *returned_bytes -= 1; - return AUX_CHANNEL_OPERATION_SUCCEEDED; + return AUX_RET_SUCCESS; } } else { /*time_elapsed >= aux_engine->timeout_period * AUX_SW_STATUS__AUX_SW_HPD_DISCON = at this point */ ASSERT_CRITICAL(false); - return AUX_CHANNEL_OPERATION_FAILED_TIMEOUT; + return AUX_RET_ERROR_TIMEOUT; } } -enum i2caux_engine_type get_engine_type( - const struct dce_aux *engine) -{ - return I2CAUX_ENGINE_TYPE_AUX; -} - static bool acquire( struct dce_aux *engine, struct ddc *ddc) @@ -410,7 +411,8 @@ static bool acquire( return false; if (!acquire_engine(engine)) { - dal_ddc_close(ddc); + engine->ddc = ddc; + release_engine(engine); return false; } @@ -531,38 +533,50 @@ struct dce_aux *dce110_aux_engine_construct(struct aux_engine_dce110 *aux_engine static enum i2caux_transaction_action i2caux_action_from_payload(struct aux_payload *payload) { if (payload->i2c_over_aux) { + if (payload->write_status_update) { + if (payload->mot) + return I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST_MOT; + else + return I2CAUX_TRANSACTION_ACTION_I2C_STATUS_REQUEST; + } if (payload->write) { if (payload->mot) return I2CAUX_TRANSACTION_ACTION_I2C_WRITE_MOT; - return I2CAUX_TRANSACTION_ACTION_I2C_WRITE; + else + return I2CAUX_TRANSACTION_ACTION_I2C_WRITE; } if (payload->mot) return I2CAUX_TRANSACTION_ACTION_I2C_READ_MOT; + return I2CAUX_TRANSACTION_ACTION_I2C_READ; } if (payload->write) return I2CAUX_TRANSACTION_ACTION_DP_WRITE; + return I2CAUX_TRANSACTION_ACTION_DP_READ; } int dce_aux_transfer_raw(struct ddc_service *ddc, struct aux_payload *payload, - enum aux_channel_operation_result *operation_result) + enum aux_return_code_type *operation_result) { struct ddc *ddc_pin = ddc->ddc_pin; struct dce_aux *aux_engine; struct aux_request_transaction_data aux_req; - struct aux_reply_transaction_data aux_rep; uint8_t returned_bytes = 0; int res = -1; uint32_t status; memset(&aux_req, 0, sizeof(aux_req)); - memset(&aux_rep, 0, sizeof(aux_rep)); + + if (ddc_pin == NULL) { + *operation_result = AUX_RET_ERROR_ENGINE_ACQUIRE; + return -1; + } aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; if (!acquire(aux_engine, ddc_pin)) { - *operation_result = AUX_CHANNEL_OPERATION_FAILED_ENGINE_ACQUIRE; + *operation_result = AUX_RET_ERROR_ENGINE_ACQUIRE; return -1; } @@ -581,8 +595,9 @@ int dce_aux_transfer_raw(struct ddc_service *ddc, submit_channel_request(aux_engine, &aux_req); *operation_result = get_channel_status(aux_engine, &returned_bytes); - if (*operation_result == AUX_CHANNEL_OPERATION_SUCCEEDED) { - int bytes_replied = 0; + if (*operation_result == AUX_RET_SUCCESS) { + int __maybe_unused bytes_replied = 0; + bytes_replied = read_channel_reply(aux_engine, payload->length, payload->data, payload->reply, &status); @@ -598,11 +613,84 @@ int dce_aux_transfer_raw(struct ddc_service *ddc, return res; } +int dce_aux_transfer_dmub_raw(struct ddc_service *ddc, + struct aux_payload *payload, + enum aux_return_code_type *operation_result) +{ + struct ddc *ddc_pin = ddc->ddc_pin; + + if (ddc_pin != NULL) { + struct dce_aux *aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + /* XXX: Workaround to configure ddc channels for aux transactions */ + if (!acquire(aux_engine, ddc_pin)) { + *operation_result = AUX_RET_ERROR_ENGINE_ACQUIRE; + return -1; + } + release_engine(aux_engine); + } + + return dm_helper_dmub_aux_transfer_sync(ddc->ctx, ddc->link, payload, operation_result); +} + #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 +#define AUX_DEFER_DELAY_FOR_DPIA 4 /*ms*/ + +static void dce_aux_log_payload(const char *payload_name, + unsigned char *payload, uint32_t length, uint32_t max_length_to_log) +{ + if (!IS_DC_I2CAUX_LOGGING_ENABLED()) + return; + + if (payload && length) { + char hex_str[128] = {0}; + char *hex_str_ptr = &hex_str[0]; + uint32_t hex_str_remaining = sizeof(hex_str); + unsigned char *payload_ptr = payload; + unsigned char *payload_max_to_log_ptr = payload_ptr + min(max_length_to_log, length); + unsigned int count; + char *padding = ""; + + while (payload_ptr < payload_max_to_log_ptr) { + count = snprintf_count(hex_str_ptr, hex_str_remaining, "%s%02X", padding, *payload_ptr); + padding = " "; + hex_str_remaining -= count; + hex_str_ptr += count; + payload_ptr++; + } + + count = snprintf_count(hex_str_ptr, hex_str_remaining, " "); + hex_str_remaining -= count; + hex_str_ptr += count; + + payload_ptr = payload; + while (payload_ptr < payload_max_to_log_ptr) { + count = snprintf_count(hex_str_ptr, hex_str_remaining, "%c", + *payload_ptr >= ' ' ? *payload_ptr : '.'); + hex_str_remaining -= count; + hex_str_ptr += count; + payload_ptr++; + } + + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_VERBOSE, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_log_payload: %s: length=%u: data: %s%s", + payload_name, + length, + hex_str, + (length > max_length_to_log ? " (...)" : " ")); + } else { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_VERBOSE, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_log_payload: %s: length=%u: data: <empty payload>", + payload_name, + length); + } +} bool dce_aux_transfer_with_retries(struct ddc_service *ddc, struct aux_payload *payload) @@ -610,14 +698,24 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, int i, ret = 0; uint8_t reply; bool payload_reply = true; - enum aux_channel_operation_result operation_result; + enum aux_return_code_type operation_result; bool retry_on_defer = false; + struct ddc *ddc_pin = ddc->ddc_pin; + struct dce_aux *aux_engine = NULL; + struct aux_engine_dce110 *aux110 = NULL; + uint32_t defer_time_in_ms = 0; int aux_ack_retries = 0, aux_defer_retries = 0, aux_i2c_defer_retries = 0, aux_timeout_retries = 0, - aux_invalid_reply_retries = 0; + aux_invalid_reply_retries = 0, + aux_ack_m_retries = 0; + + if (ddc_pin) { + aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; + aux110 = FROM_AUX_ENGINE(aux_engine); + } if (!payload->reply) { payload_reply = false; @@ -625,71 +723,222 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, } for (i = 0; i < AUX_MAX_RETRIES; i++) { - 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: START: retry %d of %d: " + "address=0x%04x length=%u write=%d mot=%d is_i2c=%d is_dpia=%d ddc_hw_inst=%d", + ddc && ddc->link ? ddc->link->link_index : UINT_MAX, + i + 1, + (int)AUX_MAX_RETRIES, + payload->address, + payload->length, + (unsigned int) payload->write, + (unsigned int) payload->mot, + payload->i2c_over_aux, + (ddc->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) ? true : false, + ddc->link->ddc_hw_inst); + if (payload->write) + dce_aux_log_payload(" write", payload->data, payload->length, 16); + + /* 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 is_i2c=%d is_dpia=%d ddc_hw_inst=%d", + ddc && ddc->link ? ddc->link->link_index : UINT_MAX, + i + 1, + (int)AUX_MAX_RETRIES, + payload->address, + payload->length, + (unsigned int) payload->write, + (unsigned int) payload->mot, + ret, + (int)operation_result, + (unsigned int) *payload->reply, + payload->i2c_over_aux, + (ddc->link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) ? true : false, + ddc->link->ddc_hw_inst); + if (!payload->write) + dce_aux_log_payload(" read", payload->data, ret > 0 ? ret : 0, 16); + switch (operation_result) { - case AUX_CHANNEL_OPERATION_SUCCEEDED: + case AUX_RET_SUCCESS: aux_timeout_retries = 0; aux_invalid_reply_retries = 0; switch (*payload->reply) { case AUX_TRANSACTION_REPLY_AUX_ACK: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_ACK"); if (!payload->write && payload->length != ret) { - if (++aux_ack_retries >= AUX_MAX_RETRIES) + if (++aux_ack_retries >= AUX_MAX_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_ack_retries=%d >= AUX_MAX_RETRIES=%d", + aux_defer_retries, + AUX_MAX_RETRIES); goto fail; - else + } else udelay(300); + } else if (payload->write && ret > 0) { + /* sink requested more time to complete the write via AUX_ACKM */ + if (++aux_ack_m_retries >= AUX_MAX_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_ack_m_retries=%d >= AUX_MAX_RETRIES=%d", + aux_ack_m_retries, + AUX_MAX_RETRIES); + goto fail; + } + + /* retry reading the write status until complete + * NOTE: payload is modified here + */ + payload->write = false; + payload->write_status_update = true; + payload->length = 0; + udelay(300); } else return true; break; case AUX_TRANSACTION_REPLY_AUX_DEFER: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_DEFER"); + + /* polling_timeout_period is in us */ + if (aux110) + defer_time_in_ms += aux110->polling_timeout_period / 1000; + else + defer_time_in_ms += AUX_DEFER_DELAY_FOR_DPIA; + ++aux_defer_retries; + fallthrough; case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER: + if (*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER) + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: 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) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_defer_retries=%d >= AUX_MIN_DEFER_RETRIES=%d && defer_time_in_ms=%d >= AUX_MAX_DEFER_TIMEOUT_MS=%d", + 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 > 0) - msleep(payload->defer_delay); + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: payload->defer_delay=%u", + payload->defer_delay); + fsleep(payload->defer_delay * 1000); + defer_time_in_ms += payload->defer_delay; } } break; - + case AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: FAILURE: AUX_TRANSACTION_REPLY_I2C_OVER_AUX_NACK"); + goto fail; case AUX_TRANSACTION_REPLY_I2C_DEFER: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_I2C_DEFER"); + aux_defer_retries = 0; - if (++aux_i2c_defer_retries >= AUX_MAX_I2C_DEFER_RETRIES) + if (++aux_i2c_defer_retries >= AUX_MAX_I2C_DEFER_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_i2c_defer_retries=%d >= AUX_MAX_I2C_DEFER_RETRIES=%d", + aux_i2c_defer_retries, + AUX_MAX_I2C_DEFER_RETRIES); goto fail; + } break; case AUX_TRANSACTION_REPLY_AUX_NACK: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_AUX_NACK"); + goto fail; + case AUX_TRANSACTION_REPLY_HPD_DISCON: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: AUX_TRANSACTION_REPLY_HPD_DISCON"); + goto fail; + default: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: AUX_RET_SUCCESS: FAILURE: AUX_TRANSACTION_REPLY_* unknown, default case. Reply: %d", *payload->reply); goto fail; } break; - case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY: - if (++aux_invalid_reply_retries >= AUX_MAX_INVALID_REPLY_RETRIES) + case AUX_RET_ERROR_INVALID_REPLY: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_ERROR_INVALID_REPLY"); + if (++aux_invalid_reply_retries >= AUX_MAX_INVALID_REPLY_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_invalid_reply_retries=%d >= AUX_MAX_INVALID_REPLY_RETRIES=%d", + aux_invalid_reply_retries, + AUX_MAX_INVALID_REPLY_RETRIES); goto fail; - else + } else udelay(400); break; - case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT: + case AUX_RET_ERROR_TIMEOUT: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: AUX_RET_ERROR_TIMEOUT"); // 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) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_defer_retries=%d >= AUX_MIN_DEFER_RETRIES=%d", + aux_defer_retries, + AUX_MIN_DEFER_RETRIES); goto fail; - else if (payload->defer_delay > 0) + } else if (payload->defer_delay > 0) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_INFORMATION, + LOG_FLAG_I2cAux_DceAux, + "dce_aux_transfer_with_retries: payload->defer_delay=%u", + payload->defer_delay); msleep(payload->defer_delay); + } } else { - if (++aux_timeout_retries >= AUX_MAX_TIMEOUT_RETRIES) + if (++aux_timeout_retries >= AUX_MAX_TIMEOUT_RETRIES) { + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "dce_aux_transfer_with_retries: FAILURE: aux_timeout_retries=%d >= AUX_MAX_TIMEOUT_RETRIES=%d", + aux_timeout_retries, + AUX_MAX_TIMEOUT_RETRIES); goto fail; - else { + } else { /* * DP 1.4, 2.8.2: AUX Transaction Response/Reply Timeouts * According to the DP spec there should be 3 retries total @@ -700,16 +949,22 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc, } break; - case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON: - case AUX_CHANNEL_OPERATION_FAILED_ENGINE_ACQUIRE: - case AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN: + case AUX_RET_ERROR_HPD_DISCON: + case AUX_RET_ERROR_ENGINE_ACQUIRE: + case AUX_RET_ERROR_UNKNOWN: default: goto fail; } } fail: + DC_TRACE_LEVEL_MESSAGE(DAL_TRACE_LEVEL_ERROR, + LOG_FLAG_Error_I2cAux, + "%s: Failure: operation_result=%d", + __func__, + (int)operation_result); if (!payload_reply) payload->reply = NULL; + return false; } |