diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c | 491 |
1 files changed, 0 insertions, 491 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c b/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c deleted file mode 100644 index 1ad6e49102ff..000000000000 --- a/drivers/gpu/drm/amd/display/dc/i2caux/i2caux.c +++ /dev/null @@ -1,491 +0,0 @@ -/* - * 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" - -/* - * Pre-requisites: headers required by header of this unit - */ -#include "include/i2caux_interface.h" -#include "dc_bios_types.h" - -/* - * Header of this unit - */ - -#include "i2caux.h" - -/* - * Post-requisites: headers required by this unit - */ - -#include "engine.h" -#include "i2c_engine.h" -#include "aux_engine.h" - -/* - * This unit - */ - -#include "dce80/i2caux_dce80.h" - -#include "dce100/i2caux_dce100.h" - -#include "dce110/i2caux_dce110.h" - -#include "dce112/i2caux_dce112.h" - -#include "dce120/i2caux_dce120.h" - -#if defined(CONFIG_DRM_AMD_DC_DCN1_0) -#include "dcn10/i2caux_dcn10.h" -#endif - -#include "diagnostics/i2caux_diag.h" - -/* - * @brief - * Plain API, available publicly - */ - -struct i2caux *dal_i2caux_create( - struct dc_context *ctx) -{ - if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) { - return dal_i2caux_diag_fpga_create(ctx); - } - - switch (ctx->dce_version) { - case DCE_VERSION_8_0: - case DCE_VERSION_8_1: - case DCE_VERSION_8_3: - return dal_i2caux_dce80_create(ctx); - case DCE_VERSION_11_2: - case DCE_VERSION_11_22: - return dal_i2caux_dce112_create(ctx); - case DCE_VERSION_11_0: - return dal_i2caux_dce110_create(ctx); - case DCE_VERSION_10_0: - return dal_i2caux_dce100_create(ctx); - case DCE_VERSION_12_0: - case DCE_VERSION_12_1: - return dal_i2caux_dce120_create(ctx); -#if defined(CONFIG_DRM_AMD_DC_DCN1_0) - case DCN_VERSION_1_0: - return dal_i2caux_dcn10_create(ctx); -#endif - -#if defined(CONFIG_DRM_AMD_DC_DCN1_01) - case DCN_VERSION_1_01: - return dal_i2caux_dcn10_create(ctx); -#endif - default: - BREAK_TO_DEBUGGER(); - return NULL; - } -} - -bool dal_i2caux_submit_i2c_command( - struct i2caux *i2caux, - struct ddc *ddc, - struct i2c_command *cmd) -{ - struct i2c_engine *engine; - uint8_t index_of_payload = 0; - bool result; - - if (!ddc) { - BREAK_TO_DEBUGGER(); - return false; - } - - if (!cmd) { - BREAK_TO_DEBUGGER(); - return false; - } - - /* - * default will be SW, however there is a feature flag in adapter - * service that determines whether SW i2c_engine will be available or - * not, if sw i2c is not available we will fallback to hw. This feature - * flag is set to not creating sw i2c engine for every dce except dce80 - * currently - */ - switch (cmd->engine) { - case I2C_COMMAND_ENGINE_DEFAULT: - case I2C_COMMAND_ENGINE_SW: - /* try to acquire SW engine first, - * acquire HW engine if SW engine not available */ - engine = i2caux->funcs->acquire_i2c_sw_engine(i2caux, ddc); - - if (!engine) - engine = i2caux->funcs->acquire_i2c_hw_engine( - i2caux, ddc); - break; - case I2C_COMMAND_ENGINE_HW: - default: - /* try to acquire HW engine first, - * acquire SW engine if HW engine not available */ - engine = i2caux->funcs->acquire_i2c_hw_engine(i2caux, ddc); - - if (!engine) - engine = i2caux->funcs->acquire_i2c_sw_engine( - i2caux, ddc); - } - - if (!engine) - return false; - - engine->funcs->set_speed(engine, cmd->speed); - - result = true; - - while (index_of_payload < cmd->number_of_payloads) { - bool mot = (index_of_payload != cmd->number_of_payloads - 1); - - struct i2c_payload *payload = cmd->payloads + index_of_payload; - - struct i2caux_transaction_request request = { 0 }; - - request.operation = payload->write ? - I2CAUX_TRANSACTION_WRITE : - I2CAUX_TRANSACTION_READ; - - request.payload.address_space = - I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C; - request.payload.address = (payload->address << 1) | - !payload->write; - request.payload.length = payload->length; - request.payload.data = payload->data; - - if (!engine->base.funcs->submit_request( - &engine->base, &request, mot)) { - result = false; - break; - } - - ++index_of_payload; - } - - i2caux->funcs->release_engine(i2caux, &engine->base); - - return result; -} - -bool dal_i2caux_submit_aux_command( - struct i2caux *i2caux, - struct ddc *ddc, - struct aux_command *cmd) -{ - struct aux_engine *engine; - uint8_t index_of_payload = 0; - bool result; - bool mot; - - if (!ddc) { - BREAK_TO_DEBUGGER(); - return false; - } - - if (!cmd) { - BREAK_TO_DEBUGGER(); - return false; - } - - engine = i2caux->funcs->acquire_aux_engine(i2caux, ddc); - - if (!engine) - return false; - - engine->delay = cmd->defer_delay; - engine->max_defer_write_retry = cmd->max_defer_write_retry; - - result = true; - - while (index_of_payload < cmd->number_of_payloads) { - struct aux_payload *payload = cmd->payloads + index_of_payload; - struct i2caux_transaction_request request = { 0 }; - - if (cmd->mot == I2C_MOT_UNDEF) - mot = (index_of_payload != cmd->number_of_payloads - 1); - else - mot = (cmd->mot == I2C_MOT_TRUE); - - request.operation = payload->write ? - I2CAUX_TRANSACTION_WRITE : - I2CAUX_TRANSACTION_READ; - - if (payload->i2c_over_aux) { - request.payload.address_space = - I2CAUX_TRANSACTION_ADDRESS_SPACE_I2C; - - request.payload.address = (payload->address << 1) | - !payload->write; - } else { - request.payload.address_space = - I2CAUX_TRANSACTION_ADDRESS_SPACE_DPCD; - - request.payload.address = payload->address; - } - - request.payload.length = payload->length; - request.payload.data = payload->data; - - if (!engine->base.funcs->submit_request( - &engine->base, &request, mot)) { - result = false; - break; - } - - ++index_of_payload; - } - - i2caux->funcs->release_engine(i2caux, &engine->base); - - return result; -} - -static bool get_hw_supported_ddc_line( - struct ddc *ddc, - enum gpio_ddc_line *line) -{ - enum gpio_ddc_line line_found; - - *line = GPIO_DDC_LINE_UNKNOWN; - - if (!ddc) { - BREAK_TO_DEBUGGER(); - return false; - } - - if (!ddc->hw_info.hw_supported) - return false; - - line_found = dal_ddc_get_line(ddc); - - if (line_found >= GPIO_DDC_LINE_COUNT) - return false; - - *line = line_found; - - return true; -} - -void dal_i2caux_configure_aux( - struct i2caux *i2caux, - struct ddc *ddc, - union aux_config cfg) -{ - struct aux_engine *engine = - i2caux->funcs->acquire_aux_engine(i2caux, ddc); - - if (!engine) - return; - - engine->funcs->configure(engine, cfg); - - i2caux->funcs->release_engine(i2caux, &engine->base); -} - -void dal_i2caux_destroy( - struct i2caux **i2caux) -{ - if (!i2caux || !*i2caux) { - BREAK_TO_DEBUGGER(); - return; - } - - (*i2caux)->funcs->destroy(i2caux); - - *i2caux = NULL; -} - -/* - * @brief - * An utility function used by 'struct i2caux' and its descendants - */ - -uint32_t dal_i2caux_get_reference_clock( - struct dc_bios *bios) -{ - struct dc_firmware_info info = { { 0 } }; - - if (bios->funcs->get_firmware_info(bios, &info) != BP_RESULT_OK) - return 0; - - return info.pll_info.crystal_frequency; -} - -/* - * @brief - * i2caux - */ - -enum { - /* following are expressed in KHz */ - DEFAULT_I2C_SW_SPEED = 50, - DEFAULT_I2C_HW_SPEED = 50, - - DEFAULT_I2C_SW_SPEED_100KHZ = 100, - DEFAULT_I2C_HW_SPEED_100KHZ = 100, - - /* This is the timeout as defined in DP 1.2a, - * 2.3.4 "Detailed uPacket TX AUX CH State Description". */ - AUX_TIMEOUT_PERIOD = 400, - - /* Ideally, the SW timeout should be just above 550usec - * which is programmed in HW. - * But the SW timeout of 600usec is not reliable, - * because on some systems, delay_in_microseconds() - * returns faster than it should. - * EPR #379763: by trial-and-error on different systems, - * 700usec is the minimum reliable SW timeout for polling - * the AUX_SW_STATUS.AUX_SW_DONE bit. - * This timeout expires *only* when there is - * AUX Error or AUX Timeout conditions - not during normal operation. - * During normal operation, AUX_SW_STATUS.AUX_SW_DONE bit is set - * at most within ~240usec. That means, - * increasing this timeout will not affect normal operation, - * and we'll timeout after - * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD = 1600usec. - * This timeout is especially important for - * resume from S3 and CTS. */ - SW_AUX_TIMEOUT_PERIOD_MULTIPLIER = 4 -}; - -struct i2c_engine *dal_i2caux_acquire_i2c_sw_engine( - struct i2caux *i2caux, - struct ddc *ddc) -{ - enum gpio_ddc_line line; - struct i2c_engine *engine = NULL; - - if (get_hw_supported_ddc_line(ddc, &line)) - engine = i2caux->i2c_sw_engines[line]; - - if (!engine) - engine = i2caux->i2c_generic_sw_engine; - - if (!engine) - return NULL; - - if (!engine->base.funcs->acquire(&engine->base, ddc)) - return NULL; - - return engine; -} - -struct aux_engine *dal_i2caux_acquire_aux_engine( - struct i2caux *i2caux, - struct ddc *ddc) -{ - enum gpio_ddc_line line; - struct aux_engine *engine; - - if (!get_hw_supported_ddc_line(ddc, &line)) - return NULL; - - engine = i2caux->aux_engines[line]; - - if (!engine) - return NULL; - - if (!engine->base.funcs->acquire(&engine->base, ddc)) - return NULL; - - return engine; -} - -void dal_i2caux_release_engine( - struct i2caux *i2caux, - struct engine *engine) -{ - engine->funcs->release_engine(engine); - - dal_ddc_close(engine->ddc); - - engine->ddc = NULL; -} - -void dal_i2caux_construct( - struct i2caux *i2caux, - struct dc_context *ctx) -{ - uint32_t i = 0; - - i2caux->ctx = ctx; - do { - i2caux->i2c_sw_engines[i] = NULL; - i2caux->i2c_hw_engines[i] = NULL; - i2caux->aux_engines[i] = NULL; - - ++i; - } while (i < GPIO_DDC_LINE_COUNT); - - i2caux->i2c_generic_sw_engine = NULL; - i2caux->i2c_generic_hw_engine = NULL; - - i2caux->aux_timeout_period = - SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD; - - if (ctx->dce_version >= DCE_VERSION_11_2) { - i2caux->default_i2c_hw_speed = DEFAULT_I2C_HW_SPEED_100KHZ; - i2caux->default_i2c_sw_speed = DEFAULT_I2C_SW_SPEED_100KHZ; - } else { - i2caux->default_i2c_hw_speed = DEFAULT_I2C_HW_SPEED; - i2caux->default_i2c_sw_speed = DEFAULT_I2C_SW_SPEED; - } -} - -void dal_i2caux_destruct( - struct i2caux *i2caux) -{ - uint32_t i = 0; - - if (i2caux->i2c_generic_hw_engine) - i2caux->i2c_generic_hw_engine->funcs->destroy( - &i2caux->i2c_generic_hw_engine); - - if (i2caux->i2c_generic_sw_engine) - i2caux->i2c_generic_sw_engine->funcs->destroy( - &i2caux->i2c_generic_sw_engine); - - do { - if (i2caux->aux_engines[i]) - i2caux->aux_engines[i]->funcs->destroy( - &i2caux->aux_engines[i]); - - if (i2caux->i2c_hw_engines[i]) - i2caux->i2c_hw_engines[i]->funcs->destroy( - &i2caux->i2c_hw_engines[i]); - - if (i2caux->i2c_sw_engines[i]) - i2caux->i2c_sw_engines[i]->funcs->destroy( - &i2caux->i2c_sw_engines[i]); - - ++i; - } while (i < GPIO_DDC_LINE_COUNT); -} - |