| /* |
| * Copyright 2012-15 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: AMD |
| * |
| */ |
| |
| #include "dm_services.h" |
| #include "dm_helpers.h" |
| #include "gpio_service_interface.h" |
| #include "include/ddc_service_types.h" |
| #include "include/grph_object_id.h" |
| #include "include/dpcd_defs.h" |
| #include "include/logger_interface.h" |
| #include "include/vector.h" |
| #include "core_types.h" |
| #include "dc_link_ddc.h" |
| #include "aux_engine.h" |
| |
| #define AUX_POWER_UP_WA_DELAY 500 |
| #define I2C_OVER_AUX_DEFER_WA_DELAY 70 |
| |
| /* CV smart dongle slave address for retrieving supported HDTV modes*/ |
| #define CV_SMART_DONGLE_ADDRESS 0x20 |
| /* DVI-HDMI dongle slave address for retrieving dongle signature*/ |
| #define DVI_HDMI_DONGLE_ADDRESS 0x68 |
| static const int8_t dvi_hdmi_dongle_signature_str[] = "6140063500G"; |
| struct dvi_hdmi_dongle_signature_data { |
| int8_t vendor[3];/* "AMD" */ |
| uint8_t version[2]; |
| uint8_t size; |
| int8_t id[11];/* "6140063500G"*/ |
| }; |
| /* DP-HDMI dongle slave address for retrieving dongle signature*/ |
| #define DP_HDMI_DONGLE_ADDRESS 0x40 |
| static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR"; |
| #define DP_HDMI_DONGLE_SIGNATURE_EOT 0x04 |
| |
| struct dp_hdmi_dongle_signature_data { |
| int8_t id[15];/* "DP-HDMI ADAPTOR"*/ |
| uint8_t eot;/* end of transmition '\x4' */ |
| }; |
| |
| /* SCDC Address defines (HDMI 2.0)*/ |
| #define HDMI_SCDC_WRITE_UPDATE_0_ARRAY 3 |
| #define HDMI_SCDC_ADDRESS 0x54 |
| #define HDMI_SCDC_SINK_VERSION 0x01 |
| #define HDMI_SCDC_SOURCE_VERSION 0x02 |
| #define HDMI_SCDC_UPDATE_0 0x10 |
| #define HDMI_SCDC_TMDS_CONFIG 0x20 |
| #define HDMI_SCDC_SCRAMBLER_STATUS 0x21 |
| #define HDMI_SCDC_CONFIG_0 0x30 |
| #define HDMI_SCDC_STATUS_FLAGS 0x40 |
| #define HDMI_SCDC_ERR_DETECT 0x50 |
| #define HDMI_SCDC_TEST_CONFIG 0xC0 |
| |
| union hdmi_scdc_update_read_data { |
| uint8_t byte[2]; |
| struct { |
| uint8_t STATUS_UPDATE:1; |
| uint8_t CED_UPDATE:1; |
| uint8_t RR_TEST:1; |
| uint8_t RESERVED:5; |
| uint8_t RESERVED2:8; |
| } fields; |
| }; |
| |
| union hdmi_scdc_status_flags_data { |
| uint8_t byte[2]; |
| struct { |
| uint8_t CLOCK_DETECTED:1; |
| uint8_t CH0_LOCKED:1; |
| uint8_t CH1_LOCKED:1; |
| uint8_t CH2_LOCKED:1; |
| uint8_t RESERVED:4; |
| uint8_t RESERVED2:8; |
| } fields; |
| }; |
| |
| union hdmi_scdc_ced_data { |
| uint8_t byte[7]; |
| struct { |
| uint8_t CH0_8LOW:8; |
| uint8_t CH0_7HIGH:7; |
| uint8_t CH0_VALID:1; |
| uint8_t CH1_8LOW:8; |
| uint8_t CH1_7HIGH:7; |
| uint8_t CH1_VALID:1; |
| uint8_t CH2_8LOW:8; |
| uint8_t CH2_7HIGH:7; |
| uint8_t CH2_VALID:1; |
| uint8_t CHECKSUM:8; |
| } fields; |
| }; |
| |
| union hdmi_scdc_test_config_Data { |
| uint8_t byte; |
| struct { |
| uint8_t TEST_READ_REQUEST_DELAY:7; |
| uint8_t TEST_READ_REQUEST: 1; |
| } fields; |
| }; |
| |
| struct i2c_payloads { |
| struct vector payloads; |
| }; |
| |
| struct aux_payloads { |
| struct vector payloads; |
| }; |
| |
| static struct i2c_payloads *dal_ddc_i2c_payloads_create(struct dc_context *ctx, uint32_t count) |
| { |
| struct i2c_payloads *payloads; |
| |
| payloads = kzalloc(sizeof(struct i2c_payloads), GFP_KERNEL); |
| |
| if (!payloads) |
| return NULL; |
| |
| if (dal_vector_construct( |
| &payloads->payloads, ctx, count, sizeof(struct i2c_payload))) |
| return payloads; |
| |
| kfree(payloads); |
| return NULL; |
| |
| } |
| |
| static struct i2c_payload *dal_ddc_i2c_payloads_get(struct i2c_payloads *p) |
| { |
| return (struct i2c_payload *)p->payloads.container; |
| } |
| |
| static uint32_t dal_ddc_i2c_payloads_get_count(struct i2c_payloads *p) |
| { |
| return p->payloads.count; |
| } |
| |
| static void dal_ddc_i2c_payloads_destroy(struct i2c_payloads **p) |
| { |
| if (!p || !*p) |
| return; |
| dal_vector_destruct(&(*p)->payloads); |
| kfree(*p); |
| *p = NULL; |
| |
| } |
| |
| static struct aux_payloads *dal_ddc_aux_payloads_create(struct dc_context *ctx, uint32_t count) |
| { |
| struct aux_payloads *payloads; |
| |
| payloads = kzalloc(sizeof(struct aux_payloads), GFP_KERNEL); |
| |
| if (!payloads) |
| return NULL; |
| |
| if (dal_vector_construct( |
| &payloads->payloads, ctx, count, sizeof(struct aux_payload))) |
| return payloads; |
| |
| kfree(payloads); |
| return NULL; |
| } |
| |
| static struct aux_payload *dal_ddc_aux_payloads_get(struct aux_payloads *p) |
| { |
| return (struct aux_payload *)p->payloads.container; |
| } |
| |
| static uint32_t dal_ddc_aux_payloads_get_count(struct aux_payloads *p) |
| { |
| return p->payloads.count; |
| } |
| |
| static void dal_ddc_aux_payloads_destroy(struct aux_payloads **p) |
| { |
| if (!p || !*p) |
| return; |
| |
| dal_vector_destruct(&(*p)->payloads); |
| kfree(*p); |
| *p = NULL; |
| } |
| |
| #define DDC_MIN(a, b) (((a) < (b)) ? (a) : (b)) |
| |
| void dal_ddc_i2c_payloads_add( |
| struct i2c_payloads *payloads, |
| uint32_t address, |
| uint32_t len, |
| uint8_t *data, |
| bool write) |
| { |
| uint32_t payload_size = EDID_SEGMENT_SIZE; |
| uint32_t pos; |
| |
| for (pos = 0; pos < len; pos += payload_size) { |
| struct i2c_payload payload = { |
| .write = write, |
| .address = address, |
| .length = DDC_MIN(payload_size, len - pos), |
| .data = data + pos }; |
| dal_vector_append(&payloads->payloads, &payload); |
| } |
| |
| } |
| |
| void dal_ddc_aux_payloads_add( |
| struct aux_payloads *payloads, |
| uint32_t address, |
| uint32_t len, |
| uint8_t *data, |
| bool write) |
| { |
| uint32_t payload_size = DEFAULT_AUX_MAX_DATA_SIZE; |
| uint32_t pos; |
| |
| for (pos = 0; pos < len; pos += payload_size) { |
| struct aux_payload payload = { |
| .i2c_over_aux = true, |
| .write = write, |
| .address = address, |
| .length = DDC_MIN(payload_size, len - pos), |
| .data = data + pos }; |
| dal_vector_append(&payloads->payloads, &payload); |
| } |
| } |
| |
| static void construct( |
| struct ddc_service *ddc_service, |
| struct ddc_service_init_data *init_data) |
| { |
| enum connector_id connector_id = |
| dal_graphics_object_id_get_connector_id(init_data->id); |
| |
| struct gpio_service *gpio_service = init_data->ctx->gpio_service; |
| struct graphics_object_i2c_info i2c_info; |
| struct gpio_ddc_hw_info hw_info; |
| struct dc_bios *dcb = init_data->ctx->dc_bios; |
| |
| ddc_service->link = init_data->link; |
| ddc_service->ctx = init_data->ctx; |
| |
| if (BP_RESULT_OK != dcb->funcs->get_i2c_info(dcb, init_data->id, &i2c_info)) { |
| ddc_service->ddc_pin = NULL; |
| } else { |
| hw_info.ddc_channel = i2c_info.i2c_line; |
| hw_info.hw_supported = i2c_info.i2c_hw_assist; |
| |
| ddc_service->ddc_pin = dal_gpio_create_ddc( |
| gpio_service, |
| i2c_info.gpio_info.clk_a_register_index, |
| 1 << i2c_info.gpio_info.clk_a_shift, |
| &hw_info); |
| } |
| |
| ddc_service->flags.EDID_QUERY_DONE_ONCE = false; |
| ddc_service->flags.FORCE_READ_REPEATED_START = false; |
| ddc_service->flags.EDID_STRESS_READ = false; |
| |
| ddc_service->flags.IS_INTERNAL_DISPLAY = |
| connector_id == CONNECTOR_ID_EDP || |
| connector_id == CONNECTOR_ID_LVDS; |
| |
| ddc_service->wa.raw = 0; |
| } |
| |
| struct ddc_service *dal_ddc_service_create( |
| struct ddc_service_init_data *init_data) |
| { |
| struct ddc_service *ddc_service; |
| |
| ddc_service = kzalloc(sizeof(struct ddc_service), GFP_KERNEL); |
| |
| if (!ddc_service) |
| return NULL; |
| |
| construct(ddc_service, init_data); |
| return ddc_service; |
| } |
| |
| static void destruct(struct ddc_service *ddc) |
| { |
| if (ddc->ddc_pin) |
| dal_gpio_destroy_ddc(&ddc->ddc_pin); |
| } |
| |
| void dal_ddc_service_destroy(struct ddc_service **ddc) |
| { |
| if (!ddc || !*ddc) { |
| BREAK_TO_DEBUGGER(); |
| return; |
| } |
| destruct(*ddc); |
| kfree(*ddc); |
| *ddc = NULL; |
| } |
| |
| enum ddc_service_type dal_ddc_service_get_type(struct ddc_service *ddc) |
| { |
| return DDC_SERVICE_TYPE_CONNECTOR; |
| } |
| |
| void dal_ddc_service_set_transaction_type( |
| struct ddc_service *ddc, |
| enum ddc_transaction_type type) |
| { |
| ddc->transaction_type = type; |
| } |
| |
| bool dal_ddc_service_is_in_aux_transaction_mode(struct ddc_service *ddc) |
| { |
| switch (ddc->transaction_type) { |
| case DDC_TRANSACTION_TYPE_I2C_OVER_AUX: |
| case DDC_TRANSACTION_TYPE_I2C_OVER_AUX_WITH_DEFER: |
| case DDC_TRANSACTION_TYPE_I2C_OVER_AUX_RETRY_DEFER: |
| return true; |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| void ddc_service_set_dongle_type(struct ddc_service *ddc, |
| enum display_dongle_type dongle_type) |
| { |
| ddc->dongle_type = dongle_type; |
| } |
| |
| static uint32_t defer_delay_converter_wa( |
| struct ddc_service *ddc, |
| uint32_t defer_delay) |
| { |
| struct dc_link *link = ddc->link; |
| |
| if (link->dpcd_caps.branch_dev_id == DP_BRANCH_DEVICE_ID_4 && |
| !memcmp(link->dpcd_caps.branch_dev_name, |
| DP_DVI_CONVERTER_ID_4, |
| sizeof(link->dpcd_caps.branch_dev_name))) |
| return defer_delay > I2C_OVER_AUX_DEFER_WA_DELAY ? |
| defer_delay : I2C_OVER_AUX_DEFER_WA_DELAY; |
| |
| return defer_delay; |
| } |
| |
| #define DP_TRANSLATOR_DELAY 5 |
| |
| uint32_t get_defer_delay(struct ddc_service *ddc) |
| { |
| uint32_t defer_delay = 0; |
| |
| switch (ddc->transaction_type) { |
| case DDC_TRANSACTION_TYPE_I2C_OVER_AUX: |
| if ((DISPLAY_DONGLE_DP_VGA_CONVERTER == ddc->dongle_type) || |
| (DISPLAY_DONGLE_DP_DVI_CONVERTER == ddc->dongle_type) || |
| (DISPLAY_DONGLE_DP_HDMI_CONVERTER == |
| ddc->dongle_type)) { |
| |
| defer_delay = DP_TRANSLATOR_DELAY; |
| |
| defer_delay = |
| defer_delay_converter_wa(ddc, defer_delay); |
| |
| } else /*sink has a delay different from an Active Converter*/ |
| defer_delay = 0; |
| break; |
| case DDC_TRANSACTION_TYPE_I2C_OVER_AUX_WITH_DEFER: |
| defer_delay = DP_TRANSLATOR_DELAY; |
| break; |
| default: |
| break; |
| } |
| return defer_delay; |
| } |
| |
| static bool i2c_read( |
| struct ddc_service *ddc, |
| uint32_t address, |
| uint8_t *buffer, |
| uint32_t len) |
| { |
| uint8_t offs_data = 0; |
| struct i2c_payload payloads[2] = { |
| { |
| .write = true, |
| .address = address, |
| .length = 1, |
| .data = &offs_data }, |
| { |
| .write = false, |
| .address = address, |
| .length = len, |
| .data = buffer } }; |
| |
| struct i2c_command command = { |
| .payloads = payloads, |
| .number_of_payloads = 2, |
| .engine = DDC_I2C_COMMAND_ENGINE, |
| .speed = ddc->ctx->dc->caps.i2c_speed_in_khz }; |
| |
| return dm_helpers_submit_i2c( |
| ddc->ctx, |
| ddc->link, |
| &command); |
| } |
| |
| void dal_ddc_service_i2c_query_dp_dual_mode_adaptor( |
| struct ddc_service *ddc, |
| struct display_sink_capability *sink_cap) |
| { |
| uint8_t i; |
| bool is_valid_hdmi_signature; |
| enum display_dongle_type *dongle = &sink_cap->dongle_type; |
| uint8_t type2_dongle_buf[DP_ADAPTOR_TYPE2_SIZE]; |
| bool is_type2_dongle = false; |
| int retry_count = 2; |
| struct dp_hdmi_dongle_signature_data *dongle_signature; |
| |
| /* Assume we have no valid DP passive dongle connected */ |
| *dongle = DISPLAY_DONGLE_NONE; |
| sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_HDMI_SAFE_MAX_TMDS_CLK; |
| |
| /* Read DP-HDMI dongle I2c (no response interpreted as DP-DVI dongle)*/ |
| if (!i2c_read( |
| ddc, |
| DP_HDMI_DONGLE_ADDRESS, |
| type2_dongle_buf, |
| sizeof(type2_dongle_buf))) { |
| /* Passive HDMI dongles can sometimes fail here without retrying*/ |
| while (retry_count > 0) { |
| if (i2c_read(ddc, |
| DP_HDMI_DONGLE_ADDRESS, |
| type2_dongle_buf, |
| sizeof(type2_dongle_buf))) |
| break; |
| retry_count--; |
| } |
| if (retry_count == 0) { |
| *dongle = DISPLAY_DONGLE_DP_DVI_DONGLE; |
| sink_cap->max_hdmi_pixel_clock = DP_ADAPTOR_DVI_MAX_TMDS_CLK; |
| |
| CONN_DATA_DETECT(ddc->link, type2_dongle_buf, sizeof(type2_dongle_buf), |
| "DP-DVI passive dongle %dMhz: ", |
| DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000); |
| return; |
| } |
| } |
| |
| /* Check if Type 2 dongle.*/ |
| if (type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_ID] == DP_ADAPTOR_TYPE2_ID) |
| is_type2_dongle = true; |
| |
| dongle_signature = |
| (struct dp_hdmi_dongle_signature_data *)type2_dongle_buf; |
| |
| is_valid_hdmi_signature = true; |
| |
| /* Check EOT */ |
| if (dongle_signature->eot != DP_HDMI_DONGLE_SIGNATURE_EOT) { |
| is_valid_hdmi_signature = false; |
| } |
| |
| /* Check signature */ |
| for (i = 0; i < sizeof(dongle_signature->id); ++i) { |
| /* If its not the right signature, |
| * skip mismatch in subversion byte.*/ |
| if (dongle_signature->id[i] != |
| dp_hdmi_dongle_signature_str[i] && i != 3) { |
| |
| if (is_type2_dongle) { |
| is_valid_hdmi_signature = false; |
| break; |
| } |
| |
| } |
| } |
| |
| if (is_type2_dongle) { |
| uint32_t max_tmds_clk = |
| type2_dongle_buf[DP_ADAPTOR_TYPE2_REG_MAX_TMDS_CLK]; |
| |
| max_tmds_clk = max_tmds_clk * 2 + max_tmds_clk / 2; |
| |
| if (0 == max_tmds_clk || |
| max_tmds_clk < DP_ADAPTOR_TYPE2_MIN_TMDS_CLK || |
| max_tmds_clk > DP_ADAPTOR_TYPE2_MAX_TMDS_CLK) { |
| *dongle = DISPLAY_DONGLE_DP_DVI_DONGLE; |
| |
| CONN_DATA_DETECT(ddc->link, type2_dongle_buf, |
| sizeof(type2_dongle_buf), |
| "DP-DVI passive dongle %dMhz: ", |
| DP_ADAPTOR_DVI_MAX_TMDS_CLK / 1000); |
| } else { |
| if (is_valid_hdmi_signature == true) { |
| *dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE; |
| |
| CONN_DATA_DETECT(ddc->link, type2_dongle_buf, |
| sizeof(type2_dongle_buf), |
| "Type 2 DP-HDMI passive dongle %dMhz: ", |
| max_tmds_clk); |
| } else { |
| *dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE; |
| |
| CONN_DATA_DETECT(ddc->link, type2_dongle_buf, |
| sizeof(type2_dongle_buf), |
| "Type 2 DP-HDMI passive dongle (no signature) %dMhz: ", |
| max_tmds_clk); |
| |
| } |
| |
| /* Multiply by 1000 to convert to kHz. */ |
| sink_cap->max_hdmi_pixel_clock = |
| max_tmds_clk * 1000; |
| } |
| |
| } else { |
| if (is_valid_hdmi_signature == true) { |
| *dongle = DISPLAY_DONGLE_DP_HDMI_DONGLE; |
| |
| CONN_DATA_DETECT(ddc->link, type2_dongle_buf, |
| sizeof(type2_dongle_buf), |
| "Type 1 DP-HDMI passive dongle %dMhz: ", |
| sink_cap->max_hdmi_pixel_clock / 1000); |
| } else { |
| *dongle = DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE; |
| |
| CONN_DATA_DETECT(ddc->link, type2_dongle_buf, |
| sizeof(type2_dongle_buf), |
| "Type 1 DP-HDMI passive dongle (no signature) %dMhz: ", |
| sink_cap->max_hdmi_pixel_clock / 1000); |
| } |
| } |
| |
| return; |
| } |
| |
| enum { |
| DP_SINK_CAP_SIZE = |
| DP_EDP_CONFIGURATION_CAP - DP_DPCD_REV + 1 |
| }; |
| |
| bool dal_ddc_service_query_ddc_data( |
| struct ddc_service *ddc, |
| uint32_t address, |
| uint8_t *write_buf, |
| uint32_t write_size, |
| uint8_t *read_buf, |
| uint32_t read_size) |
| { |
| bool ret; |
| uint32_t payload_size = |
| dal_ddc_service_is_in_aux_transaction_mode(ddc) ? |
| DEFAULT_AUX_MAX_DATA_SIZE : EDID_SEGMENT_SIZE; |
| |
| uint32_t write_payloads = |
| (write_size + payload_size - 1) / payload_size; |
| |
| uint32_t read_payloads = |
| (read_size + payload_size - 1) / payload_size; |
| |
| uint32_t payloads_num = write_payloads + read_payloads; |
| |
| if (write_size > EDID_SEGMENT_SIZE || read_size > EDID_SEGMENT_SIZE) |
| return false; |
| |
| /*TODO: len of payload data for i2c and aux is uint8!!!!, |
| * but we want to read 256 over i2c!!!!*/ |
| if (dal_ddc_service_is_in_aux_transaction_mode(ddc)) { |
| |
| struct aux_payloads *payloads = |
| dal_ddc_aux_payloads_create(ddc->ctx, payloads_num); |
| |
| struct aux_command command = { |
| .payloads = dal_ddc_aux_payloads_get(payloads), |
| .number_of_payloads = 0, |
| .defer_delay = get_defer_delay(ddc), |
| .max_defer_write_retry = 0 }; |
| |
| dal_ddc_aux_payloads_add( |
| payloads, address, write_size, write_buf, true); |
| |
| dal_ddc_aux_payloads_add( |
| payloads, address, read_size, read_buf, false); |
| |
| command.number_of_payloads = |
| dal_ddc_aux_payloads_get_count(payloads); |
| |
| ret = dal_i2caux_submit_aux_command( |
| ddc->ctx->i2caux, |
| ddc->ddc_pin, |
| &command); |
| |
| dal_ddc_aux_payloads_destroy(&payloads); |
| |
| } else { |
| struct i2c_payloads *payloads = |
| dal_ddc_i2c_payloads_create(ddc->ctx, payloads_num); |
| |
| struct i2c_command command = { |
| .payloads = dal_ddc_i2c_payloads_get(payloads), |
| .number_of_payloads = 0, |
| .engine = DDC_I2C_COMMAND_ENGINE, |
| .speed = ddc->ctx->dc->caps.i2c_speed_in_khz }; |
| |
| dal_ddc_i2c_payloads_add( |
| payloads, address, write_size, write_buf, true); |
| |
| dal_ddc_i2c_payloads_add( |
| payloads, address, read_size, read_buf, false); |
| |
| command.number_of_payloads = |
| dal_ddc_i2c_payloads_get_count(payloads); |
| |
| ret = dm_helpers_submit_i2c( |
| ddc->ctx, |
| ddc->link, |
| &command); |
| |
| dal_ddc_i2c_payloads_destroy(&payloads); |
| } |
| |
| return ret; |
| } |
| |
| int dc_link_aux_transfer(struct ddc_service *ddc, |
| unsigned int address, |
| uint8_t *reply, |
| void *buffer, |
| unsigned int size, |
| enum aux_transaction_type type, |
| enum i2caux_transaction_action action) |
| { |
| struct ddc *ddc_pin = ddc->ddc_pin; |
| struct aux_engine *aux_engine; |
| enum aux_channel_operation_result operation_result; |
| 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)); |
| |
| aux_engine = ddc->ctx->dc->res_pool->engines[ddc_pin->pin_data->en]; |
| aux_engine->funcs->acquire(aux_engine, ddc_pin); |
| |
| aux_req.type = type; |
| aux_req.action = action; |
| |
| aux_req.address = address; |
| aux_req.delay = 0; |
| aux_req.length = size; |
| aux_req.data = buffer; |
| |
| aux_engine->funcs->submit_channel_request(aux_engine, &aux_req); |
| operation_result = aux_engine->funcs->get_channel_status(aux_engine, &returned_bytes); |
| |
| switch (operation_result) { |
| case AUX_CHANNEL_OPERATION_SUCCEEDED: |
| res = returned_bytes; |
| |
| if (res <= size && res >= 0) |
| res = aux_engine->funcs->read_channel_reply(aux_engine, size, |
| buffer, reply, |
| &status); |
| |
| break; |
| case AUX_CHANNEL_OPERATION_FAILED_HPD_DISCON: |
| res = 0; |
| break; |
| case AUX_CHANNEL_OPERATION_FAILED_REASON_UNKNOWN: |
| case AUX_CHANNEL_OPERATION_FAILED_INVALID_REPLY: |
| case AUX_CHANNEL_OPERATION_FAILED_TIMEOUT: |
| res = -1; |
| break; |
| } |
| aux_engine->funcs->release_engine(aux_engine); |
| return res; |
| } |
| |
| /*test only function*/ |
| void dal_ddc_service_set_ddc_pin( |
| struct ddc_service *ddc_service, |
| struct ddc *ddc) |
| { |
| ddc_service->ddc_pin = ddc; |
| } |
| |
| struct ddc *dal_ddc_service_get_ddc_pin(struct ddc_service *ddc_service) |
| { |
| return ddc_service->ddc_pin; |
| } |
| |
| void dal_ddc_service_write_scdc_data(struct ddc_service *ddc_service, |
| uint32_t pix_clk, |
| bool lte_340_scramble) |
| { |
| bool over_340_mhz = pix_clk > 340000 ? 1 : 0; |
| uint8_t slave_address = HDMI_SCDC_ADDRESS; |
| uint8_t offset = HDMI_SCDC_SINK_VERSION; |
| uint8_t sink_version = 0; |
| uint8_t write_buffer[2] = {0}; |
| /*Lower than 340 Scramble bit from SCDC caps*/ |
| |
| dal_ddc_service_query_ddc_data(ddc_service, slave_address, &offset, |
| sizeof(offset), &sink_version, sizeof(sink_version)); |
| if (sink_version == 1) { |
| /*Source Version = 1*/ |
| write_buffer[0] = HDMI_SCDC_SOURCE_VERSION; |
| write_buffer[1] = 1; |
| dal_ddc_service_query_ddc_data(ddc_service, slave_address, |
| write_buffer, sizeof(write_buffer), NULL, 0); |
| /*Read Request from SCDC caps*/ |
| } |
| write_buffer[0] = HDMI_SCDC_TMDS_CONFIG; |
| |
| if (over_340_mhz) { |
| write_buffer[1] = 3; |
| } else if (lte_340_scramble) { |
| write_buffer[1] = 1; |
| } else { |
| write_buffer[1] = 0; |
| } |
| dal_ddc_service_query_ddc_data(ddc_service, slave_address, write_buffer, |
| sizeof(write_buffer), NULL, 0); |
| } |
| |
| void dal_ddc_service_read_scdc_data(struct ddc_service *ddc_service) |
| { |
| uint8_t slave_address = HDMI_SCDC_ADDRESS; |
| uint8_t offset = HDMI_SCDC_TMDS_CONFIG; |
| uint8_t tmds_config = 0; |
| |
| dal_ddc_service_query_ddc_data(ddc_service, slave_address, &offset, |
| sizeof(offset), &tmds_config, sizeof(tmds_config)); |
| if (tmds_config & 0x1) { |
| union hdmi_scdc_status_flags_data status_data = { {0} }; |
| uint8_t scramble_status = 0; |
| |
| offset = HDMI_SCDC_SCRAMBLER_STATUS; |
| dal_ddc_service_query_ddc_data(ddc_service, slave_address, |
| &offset, sizeof(offset), &scramble_status, |
| sizeof(scramble_status)); |
| offset = HDMI_SCDC_STATUS_FLAGS; |
| dal_ddc_service_query_ddc_data(ddc_service, slave_address, |
| &offset, sizeof(offset), status_data.byte, |
| sizeof(status_data.byte)); |
| } |
| } |
| |