motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-12-17 21:26:13 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

dev-serial: add support for setting data_bits in QEMUSerialSetParams

Browse source 
Also implement the behaviour reported in Linux's ftdi_sio.c whereby if an invalid
data_bits value is provided then the hardware defaults to using 8.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20201027150456.24606-8-mark.cave-ayland@ilande.co.uk
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Mark Cave-Ayland 2020-10-27 15:04:55 +00:00 • committed by Gerd Hoffmann
parent 66007a9567
commit a79f86cdbe
2 changed files with 18 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

17
hw/usb/dev-serial.c
View file

@ -308,6 +308,23 @@ static void usb_serial_handle_control(USBDevice *dev, USBPacket *p,
break;
}
case VendorDeviceOutRequest | FTDI_SET_DATA:
switch (value & 0xff) {
case 7:
s->params.data_bits = 7;
break;
case 8:
s->params.data_bits = 8;
break;
default:
/*
* According to a comment in Linux's ftdi_sio.c original FTDI
* chips fall back to 8 data bits for unsupported data_bits
*/
trace_usb_serial_unsupported_data_bits(bus->busnr, dev->addr,
value & 0xff);
s->params.data_bits = 8;
}
switch (value & FTDI_PARITY) {
case 0:
s->params.parity = 'N';