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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/serial/navman.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/serial/navman.c')
-rw-r--r-- | drivers/usb/serial/navman.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c new file mode 100644 index 000000000..20277c52d --- /dev/null +++ b/drivers/usb/serial/navman.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Navman Serial USB driver + * + * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de> + * + * TODO: + * Add termios method that uses copy_hw but also kills all echo + * flags as the navman is rx only so cannot echo. + */ + +#include <linux/gfp.h> +#include <linux/kernel.h> +#include <linux/tty.h> +#include <linux/tty_flip.h> +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/usb/serial.h> + +static const struct usb_device_id id_table[] = { + { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */ + { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */ + { }, +}; +MODULE_DEVICE_TABLE(usb, id_table); + +static void navman_read_int_callback(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + unsigned char *data = urb->transfer_buffer; + int status = urb->status; + int result; + + switch (status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", + __func__, status); + return; + default: + dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", + __func__, status); + goto exit; + } + + usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); + + if (urb->actual_length) { + tty_insert_flip_string(&port->port, data, urb->actual_length); + tty_flip_buffer_push(&port->port); + } + +exit: + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) + dev_err(&urb->dev->dev, + "%s - Error %d submitting interrupt urb\n", + __func__, result); +} + +static int navman_open(struct tty_struct *tty, struct usb_serial_port *port) +{ + int result = 0; + + if (port->interrupt_in_urb) { + dev_dbg(&port->dev, "%s - adding interrupt input for treo\n", + __func__); + result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); + if (result) + dev_err(&port->dev, + "%s - failed submitting interrupt urb, error %d\n", + __func__, result); + } + return result; +} + +static void navman_close(struct usb_serial_port *port) +{ + usb_kill_urb(port->interrupt_in_urb); +} + +static int navman_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, int count) +{ + /* + * This device can't write any data, only read from the device + */ + return -EOPNOTSUPP; +} + +static struct usb_serial_driver navman_device = { + .driver = { + .owner = THIS_MODULE, + .name = "navman", + }, + .id_table = id_table, + .num_ports = 1, + .open = navman_open, + .close = navman_close, + .write = navman_write, + .read_int_callback = navman_read_int_callback, +}; + +static struct usb_serial_driver * const serial_drivers[] = { + &navman_device, NULL +}; + +module_usb_serial_driver(serial_drivers, id_table); + +MODULE_LICENSE("GPL v2"); |