+/*
+ * This file is part of the sigrok project.
+ *
+ * Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <glib.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+
+/**
+ * Standard sr_driver_init() API helper.
+ *
+ * This function can be used to simplify most driver's hw_init() API callback.
+ *
+ * It creates a new 'struct drv_context' (drvc), assigns sr_ctx to it, and
+ * then 'drvc' is assigned to the 'struct sr_dev_driver' (di) that is passed.
+ *
+ * @param sr_ctx The libsigrok context to assign.
+ * @param di The driver instance to use.
+ * @param prefix A driver-specific prefix string used for log messages.
+ *
+ * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
+ * SR_ERR_MALLOC upon memory allocation errors.
+ */
+SR_PRIV int std_hw_init(struct sr_context *sr_ctx, struct sr_dev_driver *di,
+ const char *prefix)
+{
+ struct drv_context *drvc;
+
+ if (!di) {
+ sr_err("%sInvalid driver, cannot initialize.", prefix);
+ return SR_ERR_ARG;
+ }
+
+ if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+ sr_err("%sDriver context malloc failed.", prefix);
+ return SR_ERR_MALLOC;
+ }
+
+ drvc->sr_ctx = sr_ctx;
+ di->priv = drvc;
+
+ return SR_OK;
+}