60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*
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* This file is part of the sigrok project.
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*
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* Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <glib.h>
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#include "libsigrok.h"
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#include "libsigrok-internal.h"
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/**
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* Standard sr_driver_init() API helper.
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*
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* This function can be used to simplify most driver's hw_init() API callback.
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*
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* It creates a new 'struct drv_context' (drvc), assigns sr_ctx to it, and
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* then 'drvc' is assigned to the 'struct sr_dev_driver' (di) that is passed.
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*
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* @param sr_ctx The libsigrok context to assign.
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* @param di The driver instance to use.
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* @param prefix A driver-specific prefix string used for log messages.
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*
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* @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
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* SR_ERR_MALLOC upon memory allocation errors.
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*/
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SR_PRIV int std_hw_init(struct sr_context *sr_ctx, struct sr_dev_driver *di,
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const char *prefix)
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{
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struct drv_context *drvc;
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if (!di) {
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sr_err("%sInvalid driver, cannot initialize.", prefix);
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return SR_ERR_ARG;
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}
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if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
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sr_err("%sDriver context malloc failed.", prefix);
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return SR_ERR_MALLOC;
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}
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drvc->sr_ctx = sr_ctx;
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di->priv = drvc;
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return SR_OK;
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}
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