84 lines
2.3 KiB
C
84 lines
2.3 KiB
C
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/*
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* Copyright 2018 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#include "dce_i2c.h"
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#include "reg_helper.h"
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bool dce_i2c_oem_device_present(
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struct resource_pool *pool,
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struct ddc_service *ddc,
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size_t slave_address
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)
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{
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struct dc *dc = ddc->ctx->dc;
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struct dc_bios *dcb = dc->ctx->dc_bios;
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struct graphics_object_id id = {0};
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struct graphics_object_i2c_info i2c_info;
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if (!dc->ctx->dc_bios->fw_info.oem_i2c_present)
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return false;
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id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
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id.enum_id = 0;
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id.type = OBJECT_TYPE_GENERIC;
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if (dcb->funcs->get_i2c_info(dcb, id, &i2c_info) != BP_RESULT_OK)
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return false;
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if (i2c_info.i2c_slave_address != slave_address)
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return false;
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return true;
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}
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bool dce_i2c_submit_command(
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struct resource_pool *pool,
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struct ddc *ddc,
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struct i2c_command *cmd)
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{
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struct dce_i2c_hw *dce_i2c_hw;
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struct dce_i2c_sw dce_i2c_sw = {0};
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if (!ddc) {
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BREAK_TO_DEBUGGER();
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return false;
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}
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if (!cmd) {
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BREAK_TO_DEBUGGER();
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return false;
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}
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dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc);
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if (dce_i2c_hw)
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return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw);
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dce_i2c_sw.ctx = ddc->ctx;
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if (dce_i2c_engine_acquire_sw(&dce_i2c_sw, ddc)) {
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return dce_i2c_submit_command_sw(pool, ddc, cmd, &dce_i2c_sw);
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}
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return false;
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}
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