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/*
* Copyright 2018 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 "dce_i2c.h"
#include "reg_helper.h"
bool dce_i2c_oem_device_present(
struct resource_pool *pool,
struct ddc_service *ddc,
size_t slave_address
)
{
struct dc *dc = ddc->ctx->dc;
struct dc_bios *dcb = dc->ctx->dc_bios;
struct graphics_object_id id = {0};
struct graphics_object_i2c_info i2c_info;
if (!dc->ctx->dc_bios->fw_info.oem_i2c_present)
return false;
id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
id.enum_id = 0;
id.type = OBJECT_TYPE_GENERIC;
if (dcb->funcs->get_i2c_info(dcb, id, &i2c_info) != BP_RESULT_OK)
return false;
if (i2c_info.i2c_slave_address != slave_address)
return false;
return true;
}
bool dce_i2c_submit_command(
struct resource_pool *pool,
struct ddc *ddc,
struct i2c_command *cmd)
{
struct dce_i2c_hw *dce_i2c_hw;
struct dce_i2c_sw dce_i2c_sw = {0};
if (!ddc) {
BREAK_TO_DEBUGGER();
return false;
}
if (!cmd) {
BREAK_TO_DEBUGGER();
return false;
}
dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc);
if (dce_i2c_hw)
return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw);
dce_i2c_sw.ctx = ddc->ctx;
if (dce_i2c_engine_acquire_sw(&dce_i2c_sw, ddc)) {
return dce_i2c_submit_command_sw(pool, ddc, cmd, &dce_i2c_sw);
}
return false;
}
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