5ae2ef5407
Rename drv.c to something more fitting to its contents, and move state machine code to its own header.
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*
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* Driver API definitions
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* Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
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* Copyright (C) 2018 Bastien Nocera <hadess@hadess.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __FPI_SSM_H__
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#define __FPI_SSM_H__
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#include <stdint.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <glib.h>
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#include <libusb.h>
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/* async drv <--> lib comms */
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struct fpi_ssm;
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typedef void (*ssm_completed_fn)(struct fpi_ssm *ssm);
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typedef void (*ssm_handler_fn)(struct fpi_ssm *ssm);
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/* sequential state machine: state machine that iterates sequentially over
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* a predefined series of states. can be aborted by either completion or
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* abortion error conditions. */
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/* for library and drivers */
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struct fpi_ssm *fpi_ssm_new(struct fp_dev *dev, ssm_handler_fn handler,
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int nr_states);
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void fpi_ssm_free(struct fpi_ssm *machine);
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void fpi_ssm_start(struct fpi_ssm *machine, ssm_completed_fn callback);
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void fpi_ssm_start_subsm(struct fpi_ssm *parent, struct fpi_ssm *child);
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/* for drivers */
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void fpi_ssm_next_state(struct fpi_ssm *machine);
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void fpi_ssm_jump_to_state(struct fpi_ssm *machine, int state);
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void fpi_ssm_mark_completed(struct fpi_ssm *machine);
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void fpi_ssm_mark_aborted(struct fpi_ssm *machine, int error);
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struct fp_dev *fpi_ssm_get_dev(struct fpi_ssm *machine);
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void fpi_ssm_set_user_data(struct fpi_ssm *machine,
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void *user_data);
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void *fpi_ssm_get_user_data(struct fpi_ssm *machine);
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int fpi_ssm_get_error(struct fpi_ssm *machine);
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int fpi_ssm_get_cur_state(struct fpi_ssm *machine);
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#endif
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