FreeCalypso > hg > fc-usbser-tools

annotate libuwrap/claim_if.c @ 40:f5847be43d35

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
fc-duart28-conf: bump off both ttyUSB devices on set operation
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 10 Sep 2023 21:13:58 +0000
parents libuwrap/open_close.c@80e521d6609c
children 5160f6717903
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
40
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
2 * When we are reprogramming the EEPROM on DUART28 or possibly other devices
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
3 * in the future where we know that we are operating on a multichannel FTDI
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
4 * chip (or perhaps a multichannel chip from some other vendor), it is most
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
5 * philosophically correct to bump off ftdi_sio from both interfaces,
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
6 * removing both ttyUSB devices. Here we implement a function for claiming
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
7 * one interface, easily callable for multiple interfaces in a row.
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 */
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 #include <stdio.h>
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 #include <stdlib.h>
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 #include <usb.h>
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 #include "open_close.h"
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14
40
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
15 void usbwrap_claim_interface(usb_dev_handle *usbh, int ifnum, int detach)
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 {
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 if (detach)
40
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
18 usb_detach_kernel_driver_np(usbh, ifnum);
f5847be43d35 fc-duart28-conf: bump off both ttyUSB devices on set operation
Mychaela Falconia <falcon@freecalypso.org>
parents: 12
diff changeset
19 if (usb_claim_interface(usbh, ifnum) != 0) {
12
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 fprintf(stderr, "error: usb_claim_interface() failed\n");
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 exit(1);
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 }
80e521d6609c libuwrap: implement USB device open and close
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 }