bm16ton / ft2232-mpsse-i2c-spi-kern-drivers Goto Github PK

I 1st tried ft232h-app to enable SPI but got a kernel crash. See dmesg.txt
I also saw this error, so I tried manually inserting the modules, but it didn't make a difference
cat: /tmp/irqper: No such file or directory
cat: /tmp/usbwait: No such file or directory

sudo modprobe -r i2c-ftdi
sudo modprobe -r spi_ftdi_mpsse ft232h_intf
sudo modprobe ft232h-intf bind232h=1 poll_period=10 irqpoll=1

Configuring it as I2C does work - I see 2 I2C interfaces created.

dmesg.txt

I'm using ubuntu 22 and kernel 5.19. Would greatly appreciate any help.
If it's easier, I can try other devices or kernel versions. What other devices are known to work?

I have a cable which is labelled 'C232HM-DDHSL-0', by default this loads the stock 'ftdi-sio' driver and would NOT load your I2C driver.

It seems that it has a different product ID

$ lsusb -v | grep -B 5 -A 5 FTDI
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x0403 Future Technology Devices International, Ltd
  idProduct          0x6014 FT232H Single HS USB-UART/FIFO IC
  bcdDevice            9.00
  iManufacturer           1 FTDI
  iProduct                2 C232HM-DDHSL-0
  iSerial                 3 FT7IT1Y5
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9

Patching the i2c driver with this, and blacklisting the 'ftdi_sio' driver, enabled it to be found when plugged and I was able to scan my target devices.

diff --git a/i2c-ftdi/i2c-ftdi.c b/i2c-ftdi/i2c-ftdi.c
index ff29fe9..2e871bf 100755
--- a/i2c-ftdi/i2c-ftdi.c
+++ b/i2c-ftdi/i2c-ftdi.c
@@ -876,6 +876,12 @@ static int ftdi_usb_probe(struct usb_interface *interface,
                        ftdi_usb_delete(ftdi);
                                return -ENODEV;
                }
+       } else if (ftdi->udev->product && !strcmp(ftdi->udev->product, "C232HM-DDHSL-0")) {
+               ret = ftx232h_single_probe(interface);
+               if (ret < 0) {
+                       ftdi_usb_delete(ftdi);
+                               return -ENODEV;
+               }
        } else if (ftdi->udev->product && !strcmp(ftdi->udev->product, "ft232H-16ton-spi")) {
         dev_info(&interface->dev, "Ignoring single spi  Interface\n");
                ftdi_usb_delete(ftdi);

root@the-void:/sys/bus/i2c/devices/i2c-21# ls -al
total 0
drwxr-xr-x 4 root root    0 Oct 25 20:50 .
drwxr-xr-x 7 root root    0 Oct 25 20:50 ..
--w------- 1 root root 4096 Oct 25 20:50 delete_device
lrwxrwxrwx 1 root root    0 Oct 25 20:50 device -> ../../1-1:1.0
drwxr-xr-x 3 root root    0 Oct 25 20:50 i2c-dev
-r--r--r-- 1 root root 4096 Oct 25 20:50 name
--w------- 1 root root 4096 Oct 25 20:50 new_device
drwxr-xr-x 2 root root    0 Oct 25 20:50 power
lrwxrwxrwx 1 root root    0 Oct 25 20:50 subsystem -> ../../../../../../../bus/i2c
-rw-r--r-- 1 root root 4096 Oct 25 20:50 uevent
root@the-void:/sys/bus/i2c/devices/i2c-21# i2cdetect 21
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-21.
I will probe address range 0x08-0x77.
Continue? [Y/n] y
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- 24 -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- 56 57 -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- 73 -- -- -- --                         
root@the-void:/sys/bus/i2c/devices/i2c-21# cat name
FTDI USB-to-I2C at bus 001 device 014

Thanks :-)

Good afternoon. Firstly, thank you thank you thank you for developing this driver - it's very much appreciated. I have an Adafruit FT232H based USB-i2c adapter which I'm intending on using for testing some prototype PCB's ahead of them being packaged into complete units. I thought initially these boards and chip would be ideal, without realising there was no mainline kernel driver! I've programmed the EEPROM on the board with the "16ton" serial etc, the driver seems to bind to the device and is enumerated, but I cannot seem to identify anything on the bus using i2cdetect. To validate the setup I've checked what's "actually" there using PyFTDI which seems to return a number of devices, but using the Kernel driver does not. Having probed the clock and data lines, I'm seeing a solid clock with voltage swings of ~1.6V peak to peak(1.8V logic on this board) but nothing on the data line whatsoever. What am I missing? dmesg output as follows:

[ 8025.610752] usb 1-2: new full-speed USB device number 11 using ohci-pci
[ 8025.895275] usb 1-2: config 1 interface 0 altsetting 0 endpoint 0x81 has invalid maxpacket 512, setting to 64
[ 8025.895280] usb 1-2: config 1 interface 0 altsetting 0 endpoint 0x2 has invalid maxpacket 512, setting to 64
[ 8025.923191] usb 1-2: New USB device found, idVendor=0403, idProduct=6014, bcdDevice= 9.00
[ 8025.923195] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8025.923197] usb 1-2: Product: ft232H-16ton
[ 8025.923198] usb 1-2: Manufacturer: FTDI
[ 8025.923199] usb 1-2: SerialNumber: 16ton
[ 8025.934452] i2c-ftdi 1-2:1.0: probe i2cftdi freq 100000
[ 8026.028619] i2c_dev: adapter [FTDI USB-to-I2C at bus 001 device 011] registered as minor 1
[ 8026.028646] i2c i2c-1: adapter [FTDI USB-to-I2C at bus 001 device 011] registered
[ 8026.028653] i2c-ftdi 1-2:1.0: Initialized FTDI-based I2C device
[ 8026.474508] usbcore: registered new interface driver usbserial_generic
[ 8026.474516] usbserial: USB Serial support registered for generic
[ 8026.486995] usbcore: registered new interface driver ftdi_sio
[ 8026.487006] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 8027.218245] i2c i2c-1: ioctl, cmd=0x705, arg=0x7fff646f9718
[ 8027.218337] i2c i2c-1: ioctl, cmd=0x703, arg=0x08
[ 8027.218341] i2c i2c-1: ioctl, cmd=0x720, arg=0x7fff646f96a0
[ 8090.731220] i2c i2c-1: ioctl, cmd=0x705, arg=0x7ffee6739448
[ 8090.731312] i2c i2c-1: ioctl, cmd=0x703, arg=0x08
[ 8090.731317] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8101.115436] i2c i2c-1: ioctl, cmd=0x703, arg=0x09
[ 8101.115443] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8111.365576] i2c i2c-1: ioctl, cmd=0x703, arg=0x0a
[ 8111.365584] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8121.597206] i2c i2c-1: ioctl, cmd=0x703, arg=0x0b
[ 8121.597214] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8131.850037] i2c i2c-1: ioctl, cmd=0x703, arg=0x0c
[ 8131.850044] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8142.099274] i2c i2c-1: ioctl, cmd=0x703, arg=0x0d
[ 8142.099282] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8152.330493] i2c i2c-1: ioctl, cmd=0x703, arg=0x0e
[ 8152.330500] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8162.560939] i2c i2c-1: ioctl, cmd=0x703, arg=0x0f
[ 8162.560946] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8172.815488] i2c i2c-1: ioctl, cmd=0x703, arg=0x10
[ 8172.815496] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8183.065416] i2c i2c-1: ioctl, cmd=0x703, arg=0x11
[ 8183.065423] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8193.275958] i2c i2c-1: ioctl, cmd=0x703, arg=0x12
[ 8193.276122] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8203.531151] i2c i2c-1: ioctl, cmd=0x703, arg=0x13
[ 8203.531159] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8213.762652] i2c i2c-1: ioctl, cmd=0x703, arg=0x14
[ 8213.762683] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8223.997347] i2c i2c-1: ioctl, cmd=0x703, arg=0x15
[ 8223.997354] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8234.249359] i2c i2c-1: ioctl, cmd=0x703, arg=0x16
[ 8234.249367] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8244.483014] i2c i2c-1: ioctl, cmd=0x703, arg=0x17
[ 8244.483021] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8254.735057] i2c i2c-1: ioctl, cmd=0x703, arg=0x18
[ 8254.735064] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8265.211592] i2c i2c-1: ioctl, cmd=0x703, arg=0x19
[ 8265.211600] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8275.467230] i2c i2c-1: ioctl, cmd=0x703, arg=0x1a
[ 8275.467238] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8285.703307] i2c i2c-1: ioctl, cmd=0x703, arg=0x1b
[ 8285.703314] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8295.956322] i2c i2c-1: ioctl, cmd=0x703, arg=0x1c
[ 8295.956329] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8306.186121] i2c i2c-1: ioctl, cmd=0x703, arg=0x1d
[ 8306.186151] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8316.418025] i2c i2c-1: ioctl, cmd=0x703, arg=0x1e
[ 8316.418033] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8326.670850] i2c i2c-1: ioctl, cmd=0x703, arg=0x1f
[ 8326.670860] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8336.910038] i2c i2c-1: ioctl, cmd=0x703, arg=0x20
[ 8336.910046] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8347.157070] i2c i2c-1: ioctl, cmd=0x703, arg=0x21
[ 8347.157076] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8357.375254] i2c i2c-1: ioctl, cmd=0x703, arg=0x22
[ 8357.375262] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8367.617822] i2c i2c-1: ioctl, cmd=0x703, arg=0x23
[ 8367.617830] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8377.864675] i2c i2c-1: ioctl, cmd=0x703, arg=0x24
[ 8377.864683] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8388.103045] i2c i2c-1: ioctl, cmd=0x703, arg=0x25
[ 8388.103054] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8398.344989] i2c i2c-1: ioctl, cmd=0x703, arg=0x26
[ 8398.344996] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8408.583556] i2c i2c-1: ioctl, cmd=0x703, arg=0x27
[ 8408.583564] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8418.840771] i2c i2c-1: ioctl, cmd=0x703, arg=0x28
[ 8418.840779] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8429.050965] i2c i2c-1: ioctl, cmd=0x703, arg=0x29
[ 8429.050973] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8439.308459] i2c i2c-1: ioctl, cmd=0x703, arg=0x2a
[ 8439.308468] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8449.546844] i2c i2c-1: ioctl, cmd=0x703, arg=0x2b
[ 8449.546852] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8459.787461] i2c i2c-1: ioctl, cmd=0x703, arg=0x2c
[ 8459.787469] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8470.025939] i2c i2c-1: ioctl, cmd=0x703, arg=0x2d
[ 8470.025945] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8480.262625] i2c i2c-1: ioctl, cmd=0x703, arg=0x2e
[ 8480.262634] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8490.497471] i2c i2c-1: ioctl, cmd=0x703, arg=0x2f
[ 8490.497479] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8500.755643] i2c i2c-1: ioctl, cmd=0x703, arg=0x30
[ 8500.755649] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8510.988837] i2c i2c-1: ioctl, cmd=0x703, arg=0x31
[ 8510.988845] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8521.225495] i2c i2c-1: ioctl, cmd=0x703, arg=0x32
[ 8521.225502] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8531.482338] i2c i2c-1: ioctl, cmd=0x703, arg=0x33
[ 8531.482345] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8541.691965] i2c i2c-1: ioctl, cmd=0x703, arg=0x34
[ 8541.691972] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8551.949213] i2c i2c-1: ioctl, cmd=0x703, arg=0x35
[ 8551.949221] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8562.185231] i2c i2c-1: ioctl, cmd=0x703, arg=0x36
[ 8562.185238] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8572.418552] i2c i2c-1: ioctl, cmd=0x703, arg=0x37
[ 8572.418559] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee6739390
[ 8582.675420] i2c i2c-1: ioctl, cmd=0x703, arg=0x38
[ 8582.675427] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8592.928501] i2c i2c-1: ioctl, cmd=0x703, arg=0x39
[ 8592.928509] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8603.161063] i2c i2c-1: ioctl, cmd=0x703, arg=0x3a
[ 8603.161071] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8613.637519] i2c i2c-1: ioctl, cmd=0x703, arg=0x3b
[ 8613.637525] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8623.910334] i2c i2c-1: ioctl, cmd=0x703, arg=0x3c
[ 8623.910342] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffee67393d0
[ 8680.067642] i2c i2c-1: ioctl, cmd=0x705, arg=0x7ffe62c25598
[ 8680.067723] i2c i2c-1: ioctl, cmd=0x703, arg=0x08
[ 8680.067727] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8690.442427] i2c i2c-1: ioctl, cmd=0x703, arg=0x09
[ 8690.442434] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8700.674432] i2c i2c-1: ioctl, cmd=0x703, arg=0x0a
[ 8700.674439] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8710.923602] i2c i2c-1: ioctl, cmd=0x703, arg=0x0b
[ 8710.923609] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8721.153758] i2c i2c-1: ioctl, cmd=0x703, arg=0x0c
[ 8721.153765] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8731.389268] i2c i2c-1: ioctl, cmd=0x703, arg=0x0d
[ 8731.389276] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8741.640175] i2c i2c-1: ioctl, cmd=0x703, arg=0x0e
[ 8741.640202] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8751.871220] i2c i2c-1: ioctl, cmd=0x703, arg=0x0f
[ 8751.871228] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8762.126635] i2c i2c-1: ioctl, cmd=0x703, arg=0x10
[ 8762.126642] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8772.362301] i2c i2c-1: ioctl, cmd=0x703, arg=0x11
[ 8772.362308] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8782.590369] i2c i2c-1: ioctl, cmd=0x703, arg=0x12
[ 8782.590377] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520
[ 8792.842249] i2c i2c-1: ioctl, cmd=0x703, arg=0x13
[ 8792.842257] i2c i2c-1: ioctl, cmd=0x720, arg=0x7ffe62c25520

the LCD display should be driven by SPI commands. and you use the FT232 USB to SPI chip. how you translate the SPI commands to USB commands in order to control the LCD ? how you convert the current FBTFT driver to work with USB ? i'de be happy if you can elaborate on this. i want to do the same in the most straight forward and simple way i can. if i can just send an image to the USB port and it will be displayed on the LCD it would be best.

If you getting EOVERFLOW out of nowhere - be aware of this line:

Most likely your FTDI device is using USB <= 2.0. Bulk endpoints of USB 2.0 devices is limited in size by 512 bytes (check your actual size). AFAIK on (older?) linux kernels, buffer size to use with usb_bulk_msg must not be larger than endpoint buffer.

JUST setting FTDI_IO_BUFFER_SIZE to endpoint size could cause other problems, plus you will lose speed at USB 3.0

I temporarily fixed it like this:

static int ftdi_mpsse_read(struct ftdi_usb *ftdi, u8 *data, size_t size, size_t *read)
{
        int actual_length;
        int ret;
        int sz_real = min(512, size);

        ret = usb_bulk_msg(
                ftdi->udev,
                usb_rcvbulkpipe(ftdi->udev, ftdi->ep_in),
                /* data = */data,
                /* len = */sz_real,
                /* actual_length = */&actual_length,
                ftdi->io_timeout
        );
        *read = actual_length;
        return ret;
}

It worked cuz caller functions take care of large buffers themselves.

Hi, I have a PCB with an FT2232HQ connected to an embedded Linux host over USB. I want to use the FT2232HQ's I2C interface. I have patched your driver onto my kernel, and can see the driver present in /sys/bus/usb/drivers/i2c-ftdi, and when I plug in my FT2232HQ I can see it enumerate as a USB device, however the driver does not bind to the device. I have also tried setting the new_id file to the VendorID and ProductID of the FT2232HQ, but that hasn't binded the driver either. How did you get your driver to bind to your device?