Line data    Source code

       1             : /*
       2             :  * Copyright 2018 Advanced Micro Devices, Inc.
       3             :  *
       4             :  * Permission is hereby granted, free of charge, to any person obtaining a
       5             :  * copy of this software and associated documentation files (the "Software"),
       6             :  * to deal in the Software without restriction, including without limitation
       7             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
       8             :  * and/or sell copies of the Software, and to permit persons to whom the
       9             :  * Software is furnished to do so, subject to the following conditions:
      10             :  *
      11             :  * The above copyright notice and this permission notice shall be included in
      12             :  * all copies or substantial portions of the Software.
      13             :  *
      14             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      15             :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      16             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
      17             :  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
      18             :  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
      19             :  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
      20             :  * OTHER DEALINGS IN THE SOFTWARE.
      21             :  *
      22             :  * Authors: AMD
      23             :  *
      24             :  */
      25             : #include "dce_i2c.h"
      26             : #include "reg_helper.h"
      27             : 
      28           0 : bool dce_i2c_oem_device_present(
      29             :         struct resource_pool *pool,
      30             :         struct ddc_service *ddc,
      31             :         size_t slave_address
      32             : )
      33             : {
      34           0 :         struct dc *dc = ddc->ctx->dc;
      35           0 :         struct dc_bios *dcb = dc->ctx->dc_bios;
      36           0 :         struct graphics_object_id id = {0};
      37             :         struct graphics_object_i2c_info i2c_info;
      38             : 
      39           0 :         if (!dc->ctx->dc_bios->fw_info.oem_i2c_present)
      40             :                 return false;
      41             : 
      42           0 :         id.id = dc->ctx->dc_bios->fw_info.oem_i2c_obj_id;
      43             :         id.enum_id = 0;
      44           0 :         id.type = OBJECT_TYPE_GENERIC;
      45           0 :         if (dcb->funcs->get_i2c_info(dcb, id, &i2c_info) != BP_RESULT_OK)
      46             :                 return false;
      47             : 
      48           0 :         if (i2c_info.i2c_slave_address != slave_address)
      49             :                 return false;
      50             : 
      51           0 :         return true;
      52             : }
      53             : 
      54           0 : bool dce_i2c_submit_command(
      55             :         struct resource_pool *pool,
      56             :         struct ddc *ddc,
      57             :         struct i2c_command *cmd)
      58             : {
      59             :         struct dce_i2c_hw *dce_i2c_hw;
      60           0 :         struct dce_i2c_sw dce_i2c_sw = {0};
      61             : 
      62           0 :         if (!ddc) {
      63           0 :                 BREAK_TO_DEBUGGER();
      64           0 :                 return false;
      65             :         }
      66             : 
      67           0 :         if (!cmd) {
      68           0 :                 BREAK_TO_DEBUGGER();
      69           0 :                 return false;
      70             :         }
      71             : 
      72           0 :         dce_i2c_hw = acquire_i2c_hw_engine(pool, ddc);
      73             : 
      74           0 :         if (dce_i2c_hw)
      75           0 :                 return dce_i2c_submit_command_hw(pool, ddc, cmd, dce_i2c_hw);
      76             : 
      77           0 :         dce_i2c_sw.ctx = ddc->ctx;
      78           0 :         if (dce_i2c_engine_acquire_sw(&dce_i2c_sw, ddc)) {
      79           0 :                 return dce_i2c_submit_command_sw(pool, ddc, cmd, &dce_i2c_sw);
      80             :         }
      81             : 
      82             :         return false;
      83             : }