Commit 92f1fa0d authored by Wyatt Wood's avatar Wyatt Wood Committed by Alex Deucher
Browse files

drm/amd/display: Add support for runtime feature detection command 



[Why]
Add support for new fw command for runtime feature detection.

[How]
Driver sends command through ring buffer, and fw returns data back
through this command.

Signed-off-by: default avatarWyatt Wood <wyatt.wood@amd.com>
Reviewed-by: default avatarJun Lei <Jun.Lei@amd.com>
Acked-by: default avatarEryk Brol <eryk.brol@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 42ddf36e

drivers/gpu/drm/amd/display/dmub/dmub_srv.h

+6 −0
Original line number Diff line number Diff line
@@ -345,6 +345,9 @@ struct dmub_srv { 
	uint64_t fb_base;

	uint64_t fb_offset;

	uint32_t psp_version;



	/* Feature capabilities reported by fw */

	struct dmub_feature_caps feature_caps;

};



/**
@@ -608,6 +611,9 @@ void dmub_flush_buffer_mem(const struct dmub_fb *fb); 
enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub,

					     union dmub_fw_boot_status *status);



enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub,

					      union dmub_rb_cmd *cmd);



#if defined(__cplusplus)

}

#endif

drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c

+29 −0
Original line number Diff line number Diff line
@@ -648,3 +648,32 @@ enum dmub_status dmub_srv_get_fw_boot_status(struct dmub_srv *dmub, 


	return DMUB_STATUS_OK;

}



enum dmub_status dmub_srv_cmd_with_reply_data(struct dmub_srv *dmub,

					      union dmub_rb_cmd *cmd)

{

	enum dmub_status status = DMUB_STATUS_OK;



	// Queue command

	status = dmub_srv_cmd_queue(dmub, cmd);



	if (status != DMUB_STATUS_OK)

		return status;



	// Execute command

	status = dmub_srv_cmd_execute(dmub);



	if (status != DMUB_STATUS_OK)

		return status;



	// Wait for DMUB to process command

	status = dmub_srv_wait_for_idle(dmub, 100000);



	if (status != DMUB_STATUS_OK)

		return status;



	// Copy data back from ring buffer into command

	dmub_rb_get_return_data(&dmub->inbox1_rb, cmd);



	return status;

}