diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/inc/dmub_gpint_cmd.h')
-rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_gpint_cmd.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_gpint_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_gpint_cmd.h new file mode 100644 index 000000000000..652d6fc061b6 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_gpint_cmd.h @@ -0,0 +1,75 @@ +/* + * Copyright 2019 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 + * + */ + +#ifndef _DMUB_GPINT_CMD_H_ +#define _DMUB_GPINT_CMD_H_ + +#include "dmub_types.h" + +/** + * The register format for sending a command via the GPINT. + */ +union dmub_gpint_data_register { + struct { + uint32_t param : 16; + uint32_t command_code : 12; + uint32_t status : 4; + } bits; + uint32_t all; +}; + +/** + * The shifts and masks below may alternatively be used to format and read + * the command register bits. + */ + +#define DMUB_GPINT_DATA_PARAM_MASK 0xFFFF +#define DMUB_GPINT_DATA_PARAM_SHIFT 0 + +#define DMUB_GPINT_DATA_COMMAND_CODE_MASK 0xFFF +#define DMUB_GPINT_DATA_COMMAND_CODE_SHIFT 16 + +#define DMUB_GPINT_DATA_STATUS_MASK 0xF +#define DMUB_GPINT_DATA_STATUS_SHIFT 28 + +/* + * Command IDs should be treated as stable ABI. + * Do not reuse or modify IDs. + */ + +enum dmub_gpint_command { + DMUB_GPINT__INVALID_COMMAND = 0, + DMUB_GPINT__GET_FW_VERSION = 1, + DMUB_GPINT__STOP_FW = 2, + DMUB_GPINT__GET_PSR_STATE = 7, +}; + +/** + * Command responses. + */ + +#define DMUB_GPINT__STOP_FW_RESPONSE 0xDEADDEAD + +#endif /* _DMUB_GPINT_CMD_H_ */ |