/*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
*
* Copyright (C) 2013 Uwe Hermann <uwe@hermann-uwe.de>
*
return SR_ERR_ARG;
}
- if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
+ if (!(drvc = g_try_malloc(sizeof(struct drv_context)))) {
sr_err("%sDriver context malloc failed.", prefix);
return SR_ERR_MALLOC;
}
drvc->sr_ctx = sr_ctx;
+ drvc->instances = NULL;
di->priv = drvc;
return SR_OK;
return SR_OK;
}
+
+/*
+ * Standard sr_session_stop() API helper.
+ *
+ * This function can be used to simplify most (serial port based) driver's
+ * hw_dev_acquisition_stop() API callback.
+ *
+ * @param sdi The device instance for which acquisition should stop.
+ * Must not be NULL.
+ * @param cb_data Opaque 'cb_data' pointer. Must not be NULL.
+ * @param hw_dev_close_fn Function pointer to the driver's hw_dev_close().
+ * Must not be NULL.
+ * @param serial The serial device instance (struct serial_dev_inst *).
+ * Must not be NULL.
+ * @param prefix A driver-specific prefix string used for log messages.
+ * Must not be NULL. An empty string is allowed.
+ *
+ * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments, or
+ * SR_ERR upon other errors.
+ */
+SR_PRIV int std_hw_dev_acquisition_stop_serial(struct sr_dev_inst *sdi,
+ void *cb_data, dev_close_t hw_dev_close_fn,
+ struct sr_serial_dev_inst *serial, const char *prefix)
+{
+ int ret;
+ struct sr_datafeed_packet packet;
+
+ if (!prefix) {
+ sr_err("Invalid prefix.");
+ return SR_ERR_ARG;
+ }
+
+ if (sdi->status != SR_ST_ACTIVE) {
+ sr_err("%sDevice inactive, can't stop acquisition.", prefix);
+ return SR_ERR;
+ }
+
+ sr_dbg("%sStopping acquisition.", prefix);
+
+ if ((ret = sr_source_remove(serial->fd)) < 0) {
+ sr_err("%sFailed to remove source: %d.", prefix, ret);
+ return ret;
+ }
+
+ if ((ret = hw_dev_close_fn(sdi)) < 0) {
+ sr_err("%sFailed to close device: %d.", prefix, ret);
+ return ret;
+ }
+
+ /* Send SR_DF_END packet to the session bus. */
+ sr_dbg("%sSending SR_DF_END packet.", prefix);
+ packet.type = SR_DF_END;
+ packet.payload = NULL;
+ if ((ret = sr_session_send(cb_data, &packet)) < 0) {
+ sr_err("%sFailed to send SR_DF_END packet: %d.", prefix, ret);
+ return ret;
+ }
+
+ return SR_OK;
+}
+
+/*
+ * Standard driver dev_clear() helper.
+ *
+ * This function can be used to implement the dev_clear() driver API
+ * callback. dev_close() is called before every sr_dev_inst is cleared.
+ *
+ * The only limitation is driver-specific device contexts (sdi->priv).
+ * These are freed, but any dynamic allocation within structs stored
+ * there cannot be freed.
+ *
+ * @param driver The driver which will have its instances released.
+ *
+ * @return SR_OK on success.
+ */
+SR_PRIV int std_dev_clear(const struct sr_dev_driver *driver,
+ std_dev_clear_t clear_private)
+{
+ struct sr_dev_inst *sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ GSList *l;
+ int ret;
+
+ if (!(drvc = driver->priv))
+ /* Driver was never initialized, nothing to do. */
+ return SR_OK;
+
+ ret = SR_OK;
+ for (l = drvc->instances; l; l = l->next) {
+ /* Log errors, but continue cleaning up the rest. */
+ if (!(sdi = l->data)) {
+ ret = SR_ERR_BUG;
+ continue;
+ }
+ if (!(devc = sdi->priv)) {
+ ret = SR_ERR_BUG;
+ continue;
+ }
+ if (driver->dev_close)
+ driver->dev_close(sdi);
+
+ if (sdi->conn) {
+ if (sdi->inst_type == SR_INST_USB)
+#if HAVE_LIBUSB_1_0
+ sr_usb_dev_inst_free(sdi->conn);
+#else
+ ;
+#endif
+ else if (sdi->inst_type == SR_INST_SERIAL)
+ sr_serial_dev_inst_free(sdi->conn);
+ }
+ if (clear_private)
+ clear_private(sdi->priv);
+ sdi = l->data;
+ sr_dev_inst_free(sdi);
+ }
+
+ g_slist_free(drvc->instances);
+ drvc->instances = NULL;
+
+ return ret;
+}