AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-22 21:06:53 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity
90ab5ee941
linux_dsm_epyc7002/drivers/usb/serial/keyspan.c
Rusty Russell 90ab5ee941 module_param: make bool parameters really bool (drivers & misc) 
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-13 09:32:20 +10:30

2663 lines
68 KiB
C
Raw Blame History

/*
Keyspan USB to Serial Converter driver
(C) Copyright (C) 2000-2001 Hugh Blemings <hugh@blemings.org>
(C) Copyright (C) 2002 Greg Kroah-Hartman <greg@kroah.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
See http://blemings.org/hugh/keyspan.html for more information.
Code in this driver inspired by and in a number of places taken
from Brian Warner's original Keyspan-PDA driver.
This driver has been put together with the support of Innosys, Inc.
and Keyspan, Inc the manufacturers of the Keyspan USB-serial products.
Thanks Guys :)
Thanks to Paulus for miscellaneous tidy ups, some largish chunks
of much nicer and/or completely new code and (perhaps most uniquely)
having the patience to sit down and explain why and where he'd changed
stuff.
Tip 'o the hat to IBM (and previously Linuxcare :) for supporting
staff in their work on open source projects.
*/
#include <linux/kernel.h>
#include <linux/jiffies.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/firmware.h>
#include <linux/ihex.h>
#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include "keyspan.h"
static bool debug;
/*
* Version Information
*/
#define DRIVER_VERSION "v1.1.5"
#define DRIVER_AUTHOR "Hugh Blemings <hugh@misc.nu"
#define DRIVER_DESC "Keyspan USB to Serial Converter Driver"
#define INSTAT_BUFLEN 32
#define GLOCONT_BUFLEN 64
#define INDAT49W_BUFLEN 512
/* Per device and per port private data */
struct keyspan_serial_private {
const struct keyspan_device_details *device_details;
struct urb *instat_urb;
char instat_buf[INSTAT_BUFLEN];
/* added to support 49wg, where data from all 4 ports comes in
on 1 EP and high-speed supported */
struct urb *indat_urb;
char indat_buf[INDAT49W_BUFLEN];
/* XXX this one probably will need a lock */
struct urb *glocont_urb;
char glocont_buf[GLOCONT_BUFLEN];
char ctrl_buf[8]; /* for EP0 control message */
};
struct keyspan_port_private {
/* Keep track of which input & output endpoints to use */
int in_flip;
int out_flip;
/* Keep duplicate of device details in each port
structure as well - simplifies some of the
callback functions etc. */
const struct keyspan_device_details *device_details;
/* Input endpoints and buffer for this port */
struct urb *in_urbs[2];
char in_buffer[2][64];
/* Output endpoints and buffer for this port */
struct urb *out_urbs[2];
char out_buffer[2][64];
/* Input ack endpoint */
struct urb *inack_urb;
char inack_buffer[1];
/* Output control endpoint */
struct urb *outcont_urb;
char outcont_buffer[64];
/* Settings for the port */
int baud;
int old_baud;
unsigned int cflag;
unsigned int old_cflag;
enum {flow_none, flow_cts, flow_xon} flow_control;
int rts_state; /* Handshaking pins (outputs) */
int dtr_state;
int cts_state; /* Handshaking pins (inputs) */
int dsr_state;
int dcd_state;
int ri_state;
int break_on;
unsigned long tx_start_time[2];
int resend_cont; /* need to resend control packet */
};
/* Include Keyspan message headers. All current Keyspan Adapters
make use of one of five message formats which are referred
to as USA-26, USA-28, USA-49, USA-90, USA-67 by Keyspan and
within this driver. */
#include "keyspan_usa26msg.h"
#include "keyspan_usa28msg.h"
#include "keyspan_usa49msg.h"
#include "keyspan_usa90msg.h"
#include "keyspan_usa67msg.h"
/* Functions used by new usb-serial code. */
static int __init keyspan_init(void)
{
int retval;
retval = usb_serial_register(&keyspan_pre_device);
if (retval)
goto failed_pre_device_register;
retval = usb_serial_register(&keyspan_1port_device);
if (retval)
goto failed_1port_device_register;
retval = usb_serial_register(&keyspan_2port_device);
if (retval)
goto failed_2port_device_register;
retval = usb_serial_register(&keyspan_4port_device);
if (retval)
goto failed_4port_device_register;
retval = usb_register(&keyspan_driver);
if (retval)
goto failed_usb_register;
printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
DRIVER_DESC "\n");
return 0;
failed_usb_register:
usb_serial_deregister(&keyspan_4port_device);
failed_4port_device_register:
usb_serial_deregister(&keyspan_2port_device);
failed_2port_device_register:
usb_serial_deregister(&keyspan_1port_device);
failed_1port_device_register:
usb_serial_deregister(&keyspan_pre_device);
failed_pre_device_register:
return retval;
}
static void __exit keyspan_exit(void)
{
usb_deregister(&keyspan_driver);
usb_serial_deregister(&keyspan_pre_device);
usb_serial_deregister(&keyspan_1port_device);
usb_serial_deregister(&keyspan_2port_device);
usb_serial_deregister(&keyspan_4port_device);
}
module_init(keyspan_init);
module_exit(keyspan_exit);
static void keyspan_break_ctl(struct tty_struct *tty, int break_state)
{
struct usb_serial_port *port = tty->driver_data;
struct keyspan_port_private *p_priv;
dbg("%s", __func__);
p_priv = usb_get_serial_port_data(port);
if (break_state == -1)
p_priv->break_on = 1;
else
p_priv->break_on = 0;
keyspan_send_setup(port, 0);
}
static void keyspan_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
int baud_rate, device_port;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
unsigned int cflag;
dbg("%s", __func__);
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
cflag = tty->termios->c_cflag;
device_port = port->number - port->serial->minor;
/* Baud rate calculation takes baud rate as an integer
so other rates can be generated if desired. */
baud_rate = tty_get_baud_rate(tty);
/* If no match or invalid, don't change */
if (d_details->calculate_baud_rate(baud_rate, d_details->baudclk,
NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
/* FIXME - more to do here to ensure rate changes cleanly */
/* FIXME - calcuate exact rate from divisor ? */
p_priv->baud = baud_rate;
} else
baud_rate = tty_termios_baud_rate(old_termios);
tty_encode_baud_rate(tty, baud_rate, baud_rate);
/* set CTS/RTS handshake etc. */
p_priv->cflag = cflag;
p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none;
/* Mark/Space not supported */
tty->termios->c_cflag &= ~CMSPAR;
keyspan_send_setup(port, 0);
}
static int keyspan_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
unsigned int value;
value = ((p_priv->rts_state) ? TIOCM_RTS : 0) |
((p_priv->dtr_state) ? TIOCM_DTR : 0) |
((p_priv->cts_state) ? TIOCM_CTS : 0) |
((p_priv->dsr_state) ? TIOCM_DSR : 0) |
((p_priv->dcd_state) ? TIOCM_CAR : 0) |
((p_priv->ri_state) ? TIOCM_RNG : 0);
return value;
}
static int keyspan_tiocmset(struct tty_struct *tty,
unsigned int set, unsigned int clear)
{
struct usb_serial_port *port = tty->driver_data;
struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
if (set & TIOCM_RTS)
p_priv->rts_state = 1;
if (set & TIOCM_DTR)
p_priv->dtr_state = 1;
if (clear & TIOCM_RTS)
p_priv->rts_state = 0;
if (clear & TIOCM_DTR)
p_priv->dtr_state = 0;
keyspan_send_setup(port, 0);
return 0;
}
/* Write function is similar for the four protocols used
with only a minor change for usa90 (usa19hs) required */
static int keyspan_write(struct tty_struct *tty,
struct usb_serial_port *port, const unsigned char *buf, int count)
{
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
int flip;
int left, todo;
struct urb *this_urb;
int err, maxDataLen, dataOffset;
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
if (d_details->msg_format == msg_usa90) {
maxDataLen = 64;
dataOffset = 0;
} else {
maxDataLen = 63;
dataOffset = 1;
}
dbg("%s - for port %d (%d chars), flip=%d",
__func__, port->number, count, p_priv->out_flip);
for (left = count; left > 0; left -= todo) {
todo = left;
if (todo > maxDataLen)
todo = maxDataLen;
flip = p_priv->out_flip;
/* Check we have a valid urb/endpoint before we use it... */
this_urb = p_priv->out_urbs[flip];
if (this_urb == NULL) {
/* no bulk out, so return 0 bytes written */
dbg("%s - no output urb :(", __func__);
return count;
}
dbg("%s - endpoint %d flip %d",
__func__, usb_pipeendpoint(this_urb->pipe), flip);
if (this_urb->status == -EINPROGRESS) {
if (time_before(jiffies,
p_priv->tx_start_time[flip] + 10 * HZ))
break;
usb_unlink_urb(this_urb);
break;
}
/* First byte in buffer is "last flag" (except for usa19hx)
- unused so for now so set to zero */
((char *)this_urb->transfer_buffer)[0] = 0;
memcpy(this_urb->transfer_buffer + dataOffset, buf, todo);
buf += todo;
/* send the data out the bulk port */
this_urb->transfer_buffer_length = todo + dataOffset;
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dbg("usb_submit_urb(write bulk) failed (%d)", err);
p_priv->tx_start_time[flip] = jiffies;
/* Flip for next time if usa26 or usa28 interface
(not used on usa49) */
p_priv->out_flip = (flip + 1) & d_details->outdat_endp_flip;
}
return count - left;
}
static void usa26_indat_callback(struct urb *urb)
{
int i, err;
int endpoint;
struct usb_serial_port *port;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
dbg("%s", __func__);
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
dbg("%s - nonzero status: %x on endpoint %d.",
__func__, status, endpoint);
return;
}
port = urb->context;
tty = tty_port_tty_get(&port->port);
if (tty && urb->actual_length) {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no errors on individual bytes, only
possible overrun err */
if (data[0] & RXERROR_OVERRUN)
err = TTY_OVERRUN;
else
err = 0;
for (i = 1; i < urb->actual_length ; ++i)
tty_insert_flip_char(tty, data[i], err);
} else {
/* some bytes had errors, every byte has status */
dbg("%s - RX error!!!!", __func__);
for (i = 0; i + 1 < urb->actual_length; i += 2) {
int stat = data[i], flag = 0;
if (stat & RXERROR_OVERRUN)
flag |= TTY_OVERRUN;
if (stat & RXERROR_FRAMING)
flag |= TTY_FRAME;
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
tty_insert_flip_char(tty, data[i+1], flag);
}
}
tty_flip_buffer_push(tty);
}
tty_kref_put(tty);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
}
/* Outdat handling is common for all devices */
static void usa2x_outdat_callback(struct urb *urb)
{
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
port = urb->context;
p_priv = usb_get_serial_port_data(port);
dbg("%s - urb %d", __func__, urb == p_priv->out_urbs[1]);
usb_serial_port_softint(port);
}
static void usa26_inack_callback(struct urb *urb)
{
dbg("%s", __func__);
}
static void usa26_outcont_callback(struct urb *urb)
{
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
port = urb->context;
p_priv = usb_get_serial_port_data(port);
if (p_priv->resend_cont) {
dbg("%s - sending setup", __func__);
keyspan_usa26_send_setup(port->serial, port,
p_priv->resend_cont - 1);
}
}
static void usa26_instat_callback(struct urb *urb)
{
unsigned char *data = urb->transfer_buffer;
struct keyspan_usa26_portStatusMessage *msg;
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
struct tty_struct *tty;
int old_dcd_state, err;
int status = urb->status;
serial = urb->context;
if (status) {
dbg("%s - nonzero status: %x", __func__, status);
return;
}
if (urb->actual_length != 9) {
dbg("%s - %d byte report??", __func__, urb->actual_length);
goto exit;
}
msg = (struct keyspan_usa26_portStatusMessage *)data;
#if 0
dbg("%s - port status: port %d cts %d dcd %d dsr %d ri %d toff %d txoff %d rxen %d cr %d",
__func__, msg->port, msg->hskia_cts, msg->gpia_dcd, msg->dsr, msg->ri, msg->_txOff,
msg->_txXoff, msg->rxEnabled, msg->controlResponse);
#endif
/* Now do something useful with the data */
/* Check port number from message and retrieve private data */
if (msg->port >= serial->num_ports) {
dbg("%s - Unexpected port number %d", __func__, msg->port);
goto exit;
}
port = serial->port[msg->port];
p_priv = usb_get_serial_port_data(port);
/* Update handshaking pin state information */
old_dcd_state = p_priv->dcd_state;
p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
p_priv->ri_state = ((msg->ri) ? 1 : 0);
if (old_dcd_state != p_priv->dcd_state) {
tty = tty_port_tty_get(&port->port);
if (tty && !C_CLOCAL(tty))
tty_hangup(tty);
tty_kref_put(tty);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
exit: ;
}
static void usa26_glocont_callback(struct urb *urb)
{
dbg("%s", __func__);
}
static void usa28_indat_callback(struct urb *urb)
{
int err;
struct usb_serial_port *port;
struct tty_struct *tty;
unsigned char *data;
struct keyspan_port_private *p_priv;
int status = urb->status;
dbg("%s", __func__);
port = urb->context;
p_priv = usb_get_serial_port_data(port);
data = urb->transfer_buffer;
if (urb != p_priv->in_urbs[p_priv->in_flip])
return;
do {
if (status) {
dbg("%s - nonzero status: %x on endpoint %d.",
__func__, status, usb_pipeendpoint(urb->pipe));
return;
}
port = urb->context;
p_priv = usb_get_serial_port_data(port);
data = urb->transfer_buffer;
tty =tty_port_tty_get(&port->port);
if (tty && urb->actual_length) {
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
}
tty_kref_put(tty);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)",
__func__, err);
p_priv->in_flip ^= 1;
urb = p_priv->in_urbs[p_priv->in_flip];
} while (urb->status != -EINPROGRESS);
}
static void usa28_inack_callback(struct urb *urb)
{
dbg("%s", __func__);
}
static void usa28_outcont_callback(struct urb *urb)
{
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
port = urb->context;
p_priv = usb_get_serial_port_data(port);
if (p_priv->resend_cont) {
dbg("%s - sending setup", __func__);
keyspan_usa28_send_setup(port->serial, port,
p_priv->resend_cont - 1);
}
}
static void usa28_instat_callback(struct urb *urb)
{
int err;
unsigned char *data = urb->transfer_buffer;
struct keyspan_usa28_portStatusMessage *msg;
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
struct tty_struct *tty;
int old_dcd_state;
int status = urb->status;
serial = urb->context;
if (status) {
dbg("%s - nonzero status: %x", __func__, status);
return;
}
if (urb->actual_length != sizeof(struct keyspan_usa28_portStatusMessage)) {
dbg("%s - bad length %d", __func__, urb->actual_length);
goto exit;
}
/*dbg("%s %x %x %x %x %x %x %x %x %x %x %x %x", __func__
data[0], data[1], data[2], data[3], data[4], data[5],
data[6], data[7], data[8], data[9], data[10], data[11]);*/
/* Now do something useful with the data */
msg = (struct keyspan_usa28_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
if (msg->port >= serial->num_ports) {
dbg("%s - Unexpected port number %d", __func__, msg->port);
goto exit;
}
port = serial->port[msg->port];
p_priv = usb_get_serial_port_data(port);
/* Update handshaking pin state information */
old_dcd_state = p_priv->dcd_state;
p_priv->cts_state = ((msg->cts) ? 1 : 0);
p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
p_priv->ri_state = ((msg->ri) ? 1 : 0);
if( old_dcd_state != p_priv->dcd_state && old_dcd_state) {
tty = tty_port_tty_get(&port->port);
if (tty && !C_CLOCAL(tty))
tty_hangup(tty);
tty_kref_put(tty);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
exit: ;
}
static void usa28_glocont_callback(struct urb *urb)
{
dbg("%s", __func__);
}
static void usa49_glocont_callback(struct urb *urb)
{
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
int i;
dbg("%s", __func__);
serial = urb->context;
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
p_priv = usb_get_serial_port_data(port);
if (p_priv->resend_cont) {
dbg("%s - sending setup", __func__);
keyspan_usa49_send_setup(serial, port,
p_priv->resend_cont - 1);
break;
}
}
}
/* This is actually called glostat in the Keyspan
doco */
static void usa49_instat_callback(struct urb *urb)
{
int err;
unsigned char *data = urb->transfer_buffer;
struct keyspan_usa49_portStatusMessage *msg;
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
int old_dcd_state;
int status = urb->status;
dbg("%s", __func__);
serial = urb->context;
if (status) {
dbg("%s - nonzero status: %x", __func__, status);
return;
}
if (urb->actual_length !=
sizeof(struct keyspan_usa49_portStatusMessage)) {
dbg("%s - bad length %d", __func__, urb->actual_length);
goto exit;
}
/*dbg(" %x %x %x %x %x %x %x %x %x %x %x", __func__,
data[0], data[1], data[2], data[3], data[4], data[5],
data[6], data[7], data[8], data[9], data[10]);*/
/* Now do something useful with the data */
msg = (struct keyspan_usa49_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
if (msg->portNumber >= serial->num_ports) {
dbg("%s - Unexpected port number %d",
__func__, msg->portNumber);
goto exit;
}
port = serial->port[msg->portNumber];
p_priv = usb_get_serial_port_data(port);
/* Update handshaking pin state information */
old_dcd_state = p_priv->dcd_state;
p_priv->cts_state = ((msg->cts) ? 1 : 0);
p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
p_priv->ri_state = ((msg->ri) ? 1 : 0);
if (old_dcd_state != p_priv->dcd_state && old_dcd_state) {
struct tty_struct *tty = tty_port_tty_get(&port->port);
if (tty && !C_CLOCAL(tty))
tty_hangup(tty);
tty_kref_put(tty);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
exit: ;
}
static void usa49_inack_callback(struct urb *urb)
{
dbg("%s", __func__);
}
static void usa49_indat_callback(struct urb *urb)
{
int i, err;
int endpoint;
struct usb_serial_port *port;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
dbg("%s", __func__);
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
dbg("%s - nonzero status: %x on endpoint %d.", __func__,
status, endpoint);
return;
}
port = urb->context;
tty = tty_port_tty_get(&port->port);
if (tty && urb->actual_length) {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no error on any byte */
tty_insert_flip_string(tty, data + 1,
urb->actual_length - 1);
} else {
/* some bytes had errors, every byte has status */
for (i = 0; i + 1 < urb->actual_length; i += 2) {
int stat = data[i], flag = 0;
if (stat & RXERROR_OVERRUN)
flag |= TTY_OVERRUN;
if (stat & RXERROR_FRAMING)
flag |= TTY_FRAME;
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
tty_insert_flip_char(tty, data[i+1], flag);
}
}
tty_flip_buffer_push(tty);
}
tty_kref_put(tty);
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
}
static void usa49wg_indat_callback(struct urb *urb)
{
int i, len, x, err;
struct usb_serial *serial;
struct usb_serial_port *port;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
dbg("%s", __func__);
serial = urb->context;
if (status) {
dbg("%s - nonzero status: %x", __func__, status);
return;
}
/* inbound data is in the form P#, len, status, data */
i = 0;
len = 0;
if (urb->actual_length) {
while (i < urb->actual_length) {
/* Check port number from message*/
if (data[i] >= serial->num_ports) {
dbg("%s - Unexpected port number %d",
__func__, data[i]);
return;
}
port = serial->port[data[i++]];
tty = tty_port_tty_get(&port->port);
len = data[i++];
/* 0x80 bit is error flag */
if ((data[i] & 0x80) == 0) {
/* no error on any byte */
i++;
for (x = 1; x < len ; ++x)
tty_insert_flip_char(tty, data[i++], 0);
} else {
/*
* some bytes had errors, every byte has status
*/
for (x = 0; x + 1 < len; x += 2) {
int stat = data[i], flag = 0;
if (stat & RXERROR_OVERRUN)
flag |= TTY_OVERRUN;
if (stat & RXERROR_FRAMING)
flag |= TTY_FRAME;
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
tty_insert_flip_char(tty,
data[i+1], flag);
i += 2;
}
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
}
/* not used, usa-49 doesn't have per-port control endpoints */
static void usa49_outcont_callback(struct urb *urb)
{
dbg("%s", __func__);
}
static void usa90_indat_callback(struct urb *urb)
{
int i, err;
int endpoint;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
dbg("%s", __func__);
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
dbg("%s - nonzero status: %x on endpoint %d.",
__func__, status, endpoint);
return;
}
port = urb->context;
p_priv = usb_get_serial_port_data(port);
if (urb->actual_length) {
tty = tty_port_tty_get(&port->port);
/* if current mode is DMA, looks like usa28 format
otherwise looks like usa26 data format */
if (p_priv->baud > 57600)
tty_insert_flip_string(tty, data, urb->actual_length);
else {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no errors on individual bytes, only
possible overrun err*/
if (data[0] & RXERROR_OVERRUN)
err = TTY_OVERRUN;
else
err = 0;
for (i = 1; i < urb->actual_length ; ++i)
tty_insert_flip_char(tty, data[i],
err);
} else {
/* some bytes had errors, every byte has status */
dbg("%s - RX error!!!!", __func__);
for (i = 0; i + 1 < urb->actual_length; i += 2) {
int stat = data[i], flag = 0;
if (stat & RXERROR_OVERRUN)
flag |= TTY_OVERRUN;
if (stat & RXERROR_FRAMING)
flag |= TTY_FRAME;
if (stat & RXERROR_PARITY)
flag |= TTY_PARITY;
/* XXX should handle break (0x10) */
tty_insert_flip_char(tty, data[i+1],
flag);
}
}
}
tty_flip_buffer_push(tty);
tty_kref_put(tty);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
}
static void usa90_instat_callback(struct urb *urb)
{
unsigned char *data = urb->transfer_buffer;
struct keyspan_usa90_portStatusMessage *msg;
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
struct tty_struct *tty;
int old_dcd_state, err;
int status = urb->status;
serial = urb->context;
if (status) {
dbg("%s - nonzero status: %x", __func__, status);
return;
}
if (urb->actual_length < 14) {
dbg("%s - %d byte report??", __func__, urb->actual_length);
goto exit;
}
msg = (struct keyspan_usa90_portStatusMessage *)data;
/* Now do something useful with the data */
port = serial->port[0];
p_priv = usb_get_serial_port_data(port);
/* Update handshaking pin state information */
old_dcd_state = p_priv->dcd_state;
p_priv->cts_state = ((msg->cts) ? 1 : 0);
p_priv->dsr_state = ((msg->dsr) ? 1 : 0);
p_priv->dcd_state = ((msg->dcd) ? 1 : 0);
p_priv->ri_state = ((msg->ri) ? 1 : 0);
if (old_dcd_state != p_priv->dcd_state && old_dcd_state) {
tty = tty_port_tty_get(&port->port);
if (tty && !C_CLOCAL(tty))
tty_hangup(tty);
tty_kref_put(tty);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
exit:
;
}
static void usa90_outcont_callback(struct urb *urb)
{
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
port = urb->context;
p_priv = usb_get_serial_port_data(port);
if (p_priv->resend_cont) {
dbg("%s - sending setup", __func__);
keyspan_usa90_send_setup(port->serial, port,
p_priv->resend_cont - 1);
}
}
/* Status messages from the 28xg */
static void usa67_instat_callback(struct urb *urb)
{
int err;
unsigned char *data = urb->transfer_buffer;
struct keyspan_usa67_portStatusMessage *msg;
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
int old_dcd_state;
int status = urb->status;
dbg("%s", __func__);
serial = urb->context;
if (status) {
dbg("%s - nonzero status: %x", __func__, status);
return;
}
if (urb->actual_length !=
sizeof(struct keyspan_usa67_portStatusMessage)) {
dbg("%s - bad length %d", __func__, urb->actual_length);
return;
}
/* Now do something useful with the data */
msg = (struct keyspan_usa67_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
if (msg->port >= serial->num_ports) {
dbg("%s - Unexpected port number %d", __func__, msg->port);
return;
}
port = serial->port[msg->port];
p_priv = usb_get_serial_port_data(port);
/* Update handshaking pin state information */
old_dcd_state = p_priv->dcd_state;
p_priv->cts_state = ((msg->hskia_cts) ? 1 : 0);
p_priv->dcd_state = ((msg->gpia_dcd) ? 1 : 0);
if (old_dcd_state != p_priv->dcd_state && old_dcd_state) {
struct tty_struct *tty = tty_port_tty_get(&port->port);
if (tty && !C_CLOCAL(tty))
tty_hangup(tty);
tty_kref_put(tty);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - resubmit read urb failed. (%d)", __func__, err);
}
static void usa67_glocont_callback(struct urb *urb)
{
struct usb_serial *serial;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
int i;
dbg("%s", __func__);
serial = urb->context;
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
p_priv = usb_get_serial_port_data(port);
if (p_priv->resend_cont) {
dbg("%s - sending setup", __func__);
keyspan_usa67_send_setup(serial, port,
p_priv->resend_cont - 1);
break;
}
}
}
static int keyspan_write_room(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
int flip;
int data_len;
struct urb *this_urb;
dbg("%s", __func__);
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
/* FIXME: locking */
if (d_details->msg_format == msg_usa90)
data_len = 64;
else
data_len = 63;
flip = p_priv->out_flip;
/* Check both endpoints to see if any are available. */
this_urb = p_priv->out_urbs[flip];
if (this_urb != NULL) {
if (this_urb->status != -EINPROGRESS)
return data_len;
flip = (flip + 1) & d_details->outdat_endp_flip;
this_urb = p_priv->out_urbs[flip];
if (this_urb != NULL) {
if (this_urb->status != -EINPROGRESS)
return data_len;
}
}
return 0;
}
static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct keyspan_port_private *p_priv;
struct keyspan_serial_private *s_priv;
struct usb_serial *serial = port->serial;
const struct keyspan_device_details *d_details;
int i, err;
int baud_rate, device_port;
struct urb *urb;
unsigned int cflag = 0;
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
dbg("%s - port%d.", __func__, port->number);
/* Set some sane defaults */
p_priv->rts_state = 1;
p_priv->dtr_state = 1;
p_priv->baud = 9600;
/* force baud and lcr to be set on open */
p_priv->old_baud = 0;
p_priv->old_cflag = 0;
p_priv->out_flip = 0;
p_priv->in_flip = 0;
/* Reset low level data toggle and start reading from endpoints */
for (i = 0; i < 2; i++) {
urb = p_priv->in_urbs[i];
if (urb == NULL)
continue;
/* make sure endpoint data toggle is synchronized
with the device */
usb_clear_halt(urb->dev, urb->pipe);
err = usb_submit_urb(urb, GFP_KERNEL);
if (err != 0)
dbg("%s - submit urb %d failed (%d)",
__func__, i, err);
}
/* Reset low level data toggle on out endpoints */
for (i = 0; i < 2; i++) {
urb = p_priv->out_urbs[i];
if (urb == NULL)
continue;
/* usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
usb_pipeout(urb->pipe), 0); */
}
/* get the terminal config for the setup message now so we don't
* need to send 2 of them */
device_port = port->number - port->serial->minor;
if (tty) {
cflag = tty->termios->c_cflag;
/* Baud rate calculation takes baud rate as an integer
so other rates can be generated if desired. */
baud_rate = tty_get_baud_rate(tty);
/* If no match or invalid, leave as default */
if (baud_rate >= 0
&& d_details->calculate_baud_rate(baud_rate, d_details->baudclk,
NULL, NULL, NULL, device_port) == KEYSPAN_BAUD_RATE_OK) {
p_priv->baud = baud_rate;
}
}
/* set CTS/RTS handshake etc. */
p_priv->cflag = cflag;
p_priv->flow_control = (cflag & CRTSCTS)? flow_cts: flow_none;
keyspan_send_setup(port, 1);
/* mdelay(100); */
/* keyspan_set_termios(port, NULL); */
return 0;
}
static inline void stop_urb(struct urb *urb)
{
if (urb && urb->status == -EINPROGRESS)
usb_kill_urb(urb);
}
static void keyspan_dtr_rts(struct usb_serial_port *port, int on)
{
struct keyspan_port_private *p_priv = usb_get_serial_port_data(port);
p_priv->rts_state = on;
p_priv->dtr_state = on;
keyspan_send_setup(port, 0);
}
static void keyspan_close(struct usb_serial_port *port)
{
int i;
struct usb_serial *serial = port->serial;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
p_priv->rts_state = 0;
p_priv->dtr_state = 0;
if (serial->dev) {
keyspan_send_setup(port, 2);
/* pilot-xfer seems to work best with this delay */
mdelay(100);
/* keyspan_set_termios(port, NULL); */
}
/*while (p_priv->outcont_urb->status == -EINPROGRESS) {
dbg("%s - urb in progress", __func__);
}*/
p_priv->out_flip = 0;
p_priv->in_flip = 0;
if (serial->dev) {
/* Stop reading/writing urbs */
stop_urb(p_priv->inack_urb);
/* stop_urb(p_priv->outcont_urb); */
for (i = 0; i < 2; i++) {
stop_urb(p_priv->in_urbs[i]);
stop_urb(p_priv->out_urbs[i]);
}
}
}
/* download the firmware to a pre-renumeration device */
static int keyspan_fake_startup(struct usb_serial *serial)
{
int response;
const struct ihex_binrec *record;
char *fw_name;
const struct firmware *fw;
dbg("Keyspan startup version %04x product %04x",
le16_to_cpu(serial->dev->descriptor.bcdDevice),
le16_to_cpu(serial->dev->descriptor.idProduct));
if ((le16_to_cpu(serial->dev->descriptor.bcdDevice) & 0x8000)
!= 0x8000) {
dbg("Firmware already loaded. Quitting.");
return 1;
}
/* Select firmware image on the basis of idProduct */
switch (le16_to_cpu(serial->dev->descriptor.idProduct)) {
case keyspan_usa28_pre_product_id:
fw_name = "keyspan/usa28.fw";
break;
case keyspan_usa28x_pre_product_id:
fw_name = "keyspan/usa28x.fw";
break;
case keyspan_usa28xa_pre_product_id:
fw_name = "keyspan/usa28xa.fw";
break;
case keyspan_usa28xb_pre_product_id:
fw_name = "keyspan/usa28xb.fw";
break;
case keyspan_usa19_pre_product_id:
fw_name = "keyspan/usa19.fw";
break;
case keyspan_usa19qi_pre_product_id:
fw_name = "keyspan/usa19qi.fw";
break;
case keyspan_mpr_pre_product_id:
fw_name = "keyspan/mpr.fw";
break;
case keyspan_usa19qw_pre_product_id:
fw_name = "keyspan/usa19qw.fw";
break;
case keyspan_usa18x_pre_product_id:
fw_name = "keyspan/usa18x.fw";
break;
case keyspan_usa19w_pre_product_id:
fw_name = "keyspan/usa19w.fw";
break;
case keyspan_usa49w_pre_product_id:
fw_name = "keyspan/usa49w.fw";
break;
case keyspan_usa49wlc_pre_product_id:
fw_name = "keyspan/usa49wlc.fw";
break;
default:
dev_err(&serial->dev->dev, "Unknown product ID (%04x)\n",
le16_to_cpu(serial->dev->descriptor.idProduct));
return 1;
}
if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) {
dev_err(&serial->dev->dev, "Required keyspan firmware image (%s) unavailable.\n", fw_name);
return(1);
}
dbg("Uploading Keyspan %s firmware.", fw_name);
/* download the firmware image */
response = ezusb_set_reset(serial, 1);
record = (const struct ihex_binrec *)fw->data;
while (record) {
response = ezusb_writememory(serial, be32_to_cpu(record->addr),
(unsigned char *)record->data,
be16_to_cpu(record->len), 0xa0);
if (response < 0) {
dev_err(&serial->dev->dev, "ezusb_writememory failed for Keyspan firmware (%d %04X %p %d)\n",
response, be32_to_cpu(record->addr),
record->data, be16_to_cpu(record->len));
break;
}
record = ihex_next_binrec(record);
}
release_firmware(fw);
/* bring device out of reset. Renumeration will occur in a
moment and the new device will bind to the real driver */
response = ezusb_set_reset(serial, 0);
/* we don't want this device to have a driver assigned to it. */
return 1;
}
/* Helper functions used by keyspan_setup_urbs */
static struct usb_endpoint_descriptor const *find_ep(struct usb_serial const *serial,
int endpoint)
{
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *ep;
int i;
iface_desc = serial->interface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
ep = &iface_desc->endpoint[i].desc;
if (ep->bEndpointAddress == endpoint)
return ep;
}
dev_warn(&serial->interface->dev, "found no endpoint descriptor for "
"endpoint %x\n", endpoint);
return NULL;
}
static struct urb *keyspan_setup_urb(struct usb_serial *serial, int endpoint,
int dir, void *ctx, char *buf, int len,
void (*callback)(struct urb *))
{
struct urb *urb;
struct usb_endpoint_descriptor const *ep_desc;
char const *ep_type_name;
if (endpoint == -1)
return NULL; /* endpoint not needed */
dbg("%s - alloc for endpoint %d.", __func__, endpoint);
urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
if (urb == NULL) {
dbg("%s - alloc for endpoint %d failed.", __func__, endpoint);
return NULL;
}
if (endpoint == 0) {
/* control EP filled in when used */
return urb;
}
ep_desc = find_ep(serial, endpoint);
if (!ep_desc) {
/* leak the urb, something's wrong and the callers don't care */
return urb;
}
if (usb_endpoint_xfer_int(ep_desc)) {
ep_type_name = "INT";
usb_fill_int_urb(urb, serial->dev,
usb_sndintpipe(serial->dev, endpoint) | dir,
buf, len, callback, ctx,
ep_desc->bInterval);
} else if (usb_endpoint_xfer_bulk(ep_desc)) {
ep_type_name = "BULK";
usb_fill_bulk_urb(urb, serial->dev,
usb_sndbulkpipe(serial->dev, endpoint) | dir,
buf, len, callback, ctx);
} else {
dev_warn(&serial->interface->dev,
"unsupported endpoint type %x\n",
usb_endpoint_type(ep_desc));
usb_free_urb(urb);
return NULL;
}
dbg("%s - using urb %p for %s endpoint %x",
__func__, urb, ep_type_name, endpoint);
return urb;
}
static struct callbacks {
void (*instat_callback)(struct urb *);
void (*glocont_callback)(struct urb *);
void (*indat_callback)(struct urb *);
void (*outdat_callback)(struct urb *);
void (*inack_callback)(struct urb *);
void (*outcont_callback)(struct urb *);
} keyspan_callbacks[] = {
{
/* msg_usa26 callbacks */
.instat_callback = usa26_instat_callback,
.glocont_callback = usa26_glocont_callback,
.indat_callback = usa26_indat_callback,
.outdat_callback = usa2x_outdat_callback,
.inack_callback = usa26_inack_callback,
.outcont_callback = usa26_outcont_callback,
}, {
/* msg_usa28 callbacks */
.instat_callback = usa28_instat_callback,
.glocont_callback = usa28_glocont_callback,
.indat_callback = usa28_indat_callback,
.outdat_callback = usa2x_outdat_callback,
.inack_callback = usa28_inack_callback,
.outcont_callback = usa28_outcont_callback,
}, {
/* msg_usa49 callbacks */
.instat_callback = usa49_instat_callback,
.glocont_callback = usa49_glocont_callback,
.indat_callback = usa49_indat_callback,
.outdat_callback = usa2x_outdat_callback,
.inack_callback = usa49_inack_callback,
.outcont_callback = usa49_outcont_callback,
}, {
/* msg_usa90 callbacks */
.instat_callback = usa90_instat_callback,
.glocont_callback = usa28_glocont_callback,
.indat_callback = usa90_indat_callback,
.outdat_callback = usa2x_outdat_callback,
.inack_callback = usa28_inack_callback,
.outcont_callback = usa90_outcont_callback,
}, {
/* msg_usa67 callbacks */
.instat_callback = usa67_instat_callback,
.glocont_callback = usa67_glocont_callback,
.indat_callback = usa26_indat_callback,
.outdat_callback = usa2x_outdat_callback,
.inack_callback = usa26_inack_callback,
.outcont_callback = usa26_outcont_callback,
}
};
/* Generic setup urbs function that uses
data in device_details */
static void keyspan_setup_urbs(struct usb_serial *serial)
{
int i, j;
struct keyspan_serial_private *s_priv;
const struct keyspan_device_details *d_details;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
struct callbacks *cback;
int endp;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
d_details = s_priv->device_details;
/* Setup values for the various callback routines */
cback = &keyspan_callbacks[d_details->msg_format];
/* Allocate and set up urbs for each one that is in use,
starting with instat endpoints */
s_priv->instat_urb = keyspan_setup_urb
(serial, d_details->instat_endpoint, USB_DIR_IN,
serial, s_priv->instat_buf, INSTAT_BUFLEN,
cback->instat_callback);
s_priv->indat_urb = keyspan_setup_urb
(serial, d_details->indat_endpoint, USB_DIR_IN,
serial, s_priv->indat_buf, INDAT49W_BUFLEN,
usa49wg_indat_callback);
s_priv->glocont_urb = keyspan_setup_urb
(serial, d_details->glocont_endpoint, USB_DIR_OUT,
serial, s_priv->glocont_buf, GLOCONT_BUFLEN,
cback->glocont_callback);
/* Setup endpoints for each port specific thing */
for (i = 0; i < d_details->num_ports; i++) {
port = serial->port[i];
p_priv = usb_get_serial_port_data(port);
/* Do indat endpoints first, once for each flip */
endp = d_details->indat_endpoints[i];
for (j = 0; j <= d_details->indat_endp_flip; ++j, ++endp) {
p_priv->in_urbs[j] = keyspan_setup_urb
(serial, endp, USB_DIR_IN, port,
p_priv->in_buffer[j], 64,
cback->indat_callback);
}
for (; j < 2; ++j)
p_priv->in_urbs[j] = NULL;
/* outdat endpoints also have flip */
endp = d_details->outdat_endpoints[i];
for (j = 0; j <= d_details->outdat_endp_flip; ++j, ++endp) {
p_priv->out_urbs[j] = keyspan_setup_urb
(serial, endp, USB_DIR_OUT, port,
p_priv->out_buffer[j], 64,
cback->outdat_callback);
}
for (; j < 2; ++j)
p_priv->out_urbs[j] = NULL;
/* inack endpoint */
p_priv->inack_urb = keyspan_setup_urb
(serial, d_details->inack_endpoints[i], USB_DIR_IN,
port, p_priv->inack_buffer, 1, cback->inack_callback);
/* outcont endpoint */
p_priv->outcont_urb = keyspan_setup_urb
(serial, d_details->outcont_endpoints[i], USB_DIR_OUT,
port, p_priv->outcont_buffer, 64,
cback->outcont_callback);
}
}
/* usa19 function doesn't require prescaler */
static int keyspan_usa19_calc_baud(u32 baud_rate, u32 baudclk, u8 *rate_hi,
u8 *rate_low, u8 *prescaler, int portnum)
{
u32 b16, /* baud rate times 16 (actual rate used internally) */
div, /* divisor */
cnt; /* inverse of divisor (programmed into 8051) */
dbg("%s - %d.", __func__, baud_rate);
/* prevent divide by zero... */
b16 = baud_rate * 16L;
if (b16 == 0)
return KEYSPAN_INVALID_BAUD_RATE;
/* Any "standard" rate over 57k6 is marginal on the USA-19
as we run out of divisor resolution. */
if (baud_rate > 57600)
return KEYSPAN_INVALID_BAUD_RATE;
/* calculate the divisor and the counter (its inverse) */
div = baudclk / b16;
if (div == 0)
return KEYSPAN_INVALID_BAUD_RATE;
else
cnt = 0 - div;
if (div > 0xffff)
return KEYSPAN_INVALID_BAUD_RATE;
/* return the counter values if non-null */
if (rate_low)
*rate_low = (u8) (cnt & 0xff);
if (rate_hi)
*rate_hi = (u8) ((cnt >> 8) & 0xff);
if (rate_low && rate_hi)
dbg("%s - %d %02x %02x.",
__func__, baud_rate, *rate_hi, *rate_low);
return KEYSPAN_BAUD_RATE_OK;
}
/* usa19hs function doesn't require prescaler */
static int keyspan_usa19hs_calc_baud(u32 baud_rate, u32 baudclk, u8 *rate_hi,
u8 *rate_low, u8 *prescaler, int portnum)
{
u32 b16, /* baud rate times 16 (actual rate used internally) */
div; /* divisor */
dbg("%s - %d.", __func__, baud_rate);
/* prevent divide by zero... */
b16 = baud_rate * 16L;
if (b16 == 0)
return KEYSPAN_INVALID_BAUD_RATE;
/* calculate the divisor */
div = baudclk / b16;
if (div == 0)
return KEYSPAN_INVALID_BAUD_RATE;
if (div > 0xffff)
return KEYSPAN_INVALID_BAUD_RATE;
/* return the counter values if non-null */
if (rate_low)
*rate_low = (u8) (div & 0xff);
if (rate_hi)
*rate_hi = (u8) ((div >> 8) & 0xff);
if (rate_low && rate_hi)
dbg("%s - %d %02x %02x.",
__func__, baud_rate, *rate_hi, *rate_low);
return KEYSPAN_BAUD_RATE_OK;
}
static int keyspan_usa19w_calc_baud(u32 baud_rate, u32 baudclk, u8 *rate_hi,
u8 *rate_low, u8 *prescaler, int portnum)
{
u32 b16, /* baud rate times 16 (actual rate used internally) */
clk, /* clock with 13/8 prescaler */
div, /* divisor using 13/8 prescaler */
res, /* resulting baud rate using 13/8 prescaler */
diff, /* error using 13/8 prescaler */
smallest_diff;
u8 best_prescaler;
int i;
dbg("%s - %d.", __func__, baud_rate);
/* prevent divide by zero */
b16 = baud_rate * 16L;
if (b16 == 0)
return KEYSPAN_INVALID_BAUD_RATE;
/* Calculate prescaler by trying them all and looking
for best fit */
/* start with largest possible difference */
smallest_diff = 0xffffffff;
/* 0 is an invalid prescaler, used as a flag */
best_prescaler = 0;
for (i = 8; i <= 0xff; ++i) {
clk = (baudclk * 8) / (u32) i;
div = clk / b16;
if (div == 0)
continue;
res = clk / div;
diff = (res > b16) ? (res-b16) : (b16-res);
if (diff < smallest_diff) {
best_prescaler = i;
smallest_diff = diff;
}
}
if (best_prescaler == 0)
return KEYSPAN_INVALID_BAUD_RATE;
clk = (baudclk * 8) / (u32) best_prescaler;
div = clk / b16;
/* return the divisor and prescaler if non-null */
if (rate_low)
*rate_low = (u8) (div & 0xff);
if (rate_hi)
*rate_hi = (u8) ((div >> 8) & 0xff);
if (prescaler) {
*prescaler = best_prescaler;
/* dbg("%s - %d %d", __func__, *prescaler, div); */
}
return KEYSPAN_BAUD_RATE_OK;
}
/* USA-28 supports different maximum baud rates on each port */
static int keyspan_usa28_calc_baud(u32 baud_rate, u32 baudclk, u8 *rate_hi,
u8 *rate_low, u8 *prescaler, int portnum)
{
u32 b16, /* baud rate times 16 (actual rate used internally) */
div, /* divisor */
cnt; /* inverse of divisor (programmed into 8051) */
dbg("%s - %d.", __func__, baud_rate);
/* prevent divide by zero */
b16 = baud_rate * 16L;
if (b16 == 0)
return KEYSPAN_INVALID_BAUD_RATE;
/* calculate the divisor and the counter (its inverse) */
div = KEYSPAN_USA28_BAUDCLK / b16;
if (div == 0)
return KEYSPAN_INVALID_BAUD_RATE;
else
cnt = 0 - div;
/* check for out of range, based on portnum,
and return result */
if (portnum == 0) {
if (div > 0xffff)
return KEYSPAN_INVALID_BAUD_RATE;
} else {
if (portnum == 1) {
if (div > 0xff)
return KEYSPAN_INVALID_BAUD_RATE;
} else
return KEYSPAN_INVALID_BAUD_RATE;
}
/* return the counter values if not NULL
(port 1 will ignore retHi) */
if (rate_low)
*rate_low = (u8) (cnt & 0xff);
if (rate_hi)
*rate_hi = (u8) ((cnt >> 8) & 0xff);
dbg("%s - %d OK.", __func__, baud_rate);
return KEYSPAN_BAUD_RATE_OK;
}
static int keyspan_usa26_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port)
{
struct keyspan_usa26_portControlMessage msg;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
int outcont_urb;
struct urb *this_urb;
int device_port, err;
dbg("%s reset=%d", __func__, reset_port);
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = s_priv->device_details;
device_port = port->number - port->serial->minor;
outcont_urb = d_details->outcont_endpoints[port->number];
this_urb = p_priv->outcont_urb;
dbg("%s - endpoint %d", __func__, usb_pipeendpoint(this_urb->pipe));
/* Make sure we have an urb then send the message */
if (this_urb == NULL) {
dbg("%s - oops no urb.", __func__);
return -1;
}
/* Save reset port val for resend.
Don't overwrite resend for open/close condition. */
if ((reset_port + 1) > p_priv->resend_cont)
p_priv->resend_cont = reset_port + 1;
if (this_urb->status == -EINPROGRESS) {
/* dbg("%s - already writing", __func__); */
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa26_portControlMessage));
/* Only set baud rate if it's changed */
if (p_priv->old_baud != p_priv->baud) {
p_priv->old_baud = p_priv->baud;
msg.setClocking = 0xff;
if (d_details->calculate_baud_rate
(p_priv->baud, d_details->baudclk, &msg.baudHi,
&msg.baudLo, &msg.prescaler, device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dbg("%s - Invalid baud rate %d requested, using 9600.",
__func__, p_priv->baud);
msg.baudLo = 0;
msg.baudHi = 125; /* Values for 9600 baud */
msg.prescaler = 10;
}
msg.setPrescaler = 0xff;
}
msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
break;
case CS6:
msg.lcr |= USA_DATABITS_6;
break;
case CS7:
msg.lcr |= USA_DATABITS_7;
break;
case CS8:
msg.lcr |= USA_DATABITS_8;
break;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
msg.lcr |= (p_priv->cflag & PARODD)?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
msg.setLcr = 0xff;
msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
msg.xonFlowControl = 0;
msg.setFlowControl = 0xff;
msg.forwardingLength = 16;
msg.xonChar = 17;
msg.xoffChar = 19;
/* Opening port */
if (reset_port == 1) {
msg._txOn = 1;
msg._txOff = 0;
msg.txFlush = 0;
msg.txBreak = 0;
msg.rxOn = 1;
msg.rxOff = 0;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0xff;
}
/* Closing port */
else if (reset_port == 2) {
msg._txOn = 0;
msg._txOff = 1;
msg.txFlush = 0;
msg.txBreak = 0;
msg.rxOn = 0;
msg.rxOff = 1;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0;
}
/* Sending intermediate configs */
else {
msg._txOn = (!p_priv->break_on);
msg._txOff = 0;
msg.txFlush = 0;
msg.txBreak = (p_priv->break_on);
msg.rxOn = 0;
msg.rxOff = 0;
msg.rxFlush = 0;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0x0;
}
/* Do handshaking outputs */
msg.setTxTriState_setRts = 0xff;
msg.txTriState_rts = p_priv->rts_state;
msg.setHskoa_setDtr = 0xff;
msg.hskoa_dtr = p_priv->dtr_state;
p_priv->resend_cont = 0;
memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
/* send the data out the device on control endpoint */
this_urb->transfer_buffer_length = sizeof(msg);
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - usb_submit_urb(setup) failed (%d)", __func__, err);
#if 0
else {
dbg("%s - usb_submit_urb(%d) OK %d bytes (end %d)", __func__
outcont_urb, this_urb->transfer_buffer_length,
usb_pipeendpoint(this_urb->pipe));
}
#endif
return 0;
}
static int keyspan_usa28_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port)
{
struct keyspan_usa28_portControlMessage msg;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
struct urb *this_urb;
int device_port, err;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = s_priv->device_details;
device_port = port->number - port->serial->minor;
/* only do something if we have a bulk out endpoint */
this_urb = p_priv->outcont_urb;
if (this_urb == NULL) {
dbg("%s - oops no urb.", __func__);
return -1;
}
/* Save reset port val for resend.
Don't overwrite resend for open/close condition. */
if ((reset_port + 1) > p_priv->resend_cont)
p_priv->resend_cont = reset_port + 1;
if (this_urb->status == -EINPROGRESS) {
dbg("%s already writing", __func__);
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa28_portControlMessage));
msg.setBaudRate = 1;
if (d_details->calculate_baud_rate(p_priv->baud, d_details->baudclk,
&msg.baudHi, &msg.baudLo, NULL, device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dbg("%s - Invalid baud rate requested %d.",
__func__, p_priv->baud);
msg.baudLo = 0xff;
msg.baudHi = 0xb2; /* Values for 9600 baud */
}
/* If parity is enabled, we must calculate it ourselves. */
msg.parity = 0; /* XXX for now */
msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
msg.xonFlowControl = 0;
/* Do handshaking outputs, DTR is inverted relative to RTS */
msg.rts = p_priv->rts_state;
msg.dtr = p_priv->dtr_state;
msg.forwardingLength = 16;
msg.forwardMs = 10;
msg.breakThreshold = 45;
msg.xonChar = 17;
msg.xoffChar = 19;
/*msg.returnStatus = 1;
msg.resetDataToggle = 0xff;*/
/* Opening port */
if (reset_port == 1) {
msg._txOn = 1;
msg._txOff = 0;
msg.txFlush = 0;
msg.txForceXoff = 0;
msg.txBreak = 0;
msg.rxOn = 1;
msg.rxOff = 0;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0xff;
}
/* Closing port */
else if (reset_port == 2) {
msg._txOn = 0;
msg._txOff = 1;
msg.txFlush = 0;
msg.txForceXoff = 0;
msg.txBreak = 0;
msg.rxOn = 0;
msg.rxOff = 1;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0;
}
/* Sending intermediate configs */
else {
msg._txOn = (!p_priv->break_on);
msg._txOff = 0;
msg.txFlush = 0;
msg.txForceXoff = 0;
msg.txBreak = (p_priv->break_on);
msg.rxOn = 0;
msg.rxOff = 0;
msg.rxFlush = 0;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0x0;
}
p_priv->resend_cont = 0;
memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
/* send the data out the device on control endpoint */
this_urb->transfer_buffer_length = sizeof(msg);
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - usb_submit_urb(setup) failed", __func__);
#if 0
else {
dbg("%s - usb_submit_urb(setup) OK %d bytes", __func__,
this_urb->transfer_buffer_length);
}
#endif
return 0;
}
static int keyspan_usa49_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port)
{
struct keyspan_usa49_portControlMessage msg;
struct usb_ctrlrequest *dr = NULL;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
struct urb *this_urb;
int err, device_port;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = s_priv->device_details;
this_urb = s_priv->glocont_urb;
/* Work out which port within the device is being setup */
device_port = port->number - port->serial->minor;
/* Make sure we have an urb then send the message */
if (this_urb == NULL) {
dbg("%s - oops no urb for port %d.", __func__, port->number);
return -1;
}
dbg("%s - endpoint %d port %d (%d)",
__func__, usb_pipeendpoint(this_urb->pipe),
port->number, device_port);
/* Save reset port val for resend.
Don't overwrite resend for open/close condition. */
if ((reset_port + 1) > p_priv->resend_cont)
p_priv->resend_cont = reset_port + 1;
if (this_urb->status == -EINPROGRESS) {
/* dbg("%s - already writing", __func__); */
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa49_portControlMessage));
/*msg.portNumber = port->number;*/
msg.portNumber = device_port;
/* Only set baud rate if it's changed */
if (p_priv->old_baud != p_priv->baud) {
p_priv->old_baud = p_priv->baud;
msg.setClocking = 0xff;
if (d_details->calculate_baud_rate
(p_priv->baud, d_details->baudclk, &msg.baudHi,
&msg.baudLo, &msg.prescaler, device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dbg("%s - Invalid baud rate %d requested, using 9600.",
__func__, p_priv->baud);
msg.baudLo = 0;
msg.baudHi = 125; /* Values for 9600 baud */
msg.prescaler = 10;
}
/* msg.setPrescaler = 0xff; */
}
msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
break;
case CS6:
msg.lcr |= USA_DATABITS_6;
break;
case CS7:
msg.lcr |= USA_DATABITS_7;
break;
case CS8:
msg.lcr |= USA_DATABITS_8;
break;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
msg.lcr |= (p_priv->cflag & PARODD)?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
msg.setLcr = 0xff;
msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
msg.xonFlowControl = 0;
msg.setFlowControl = 0xff;
msg.forwardingLength = 16;
msg.xonChar = 17;
msg.xoffChar = 19;
/* Opening port */
if (reset_port == 1) {
msg._txOn = 1;
msg._txOff = 0;
msg.txFlush = 0;
msg.txBreak = 0;
msg.rxOn = 1;
msg.rxOff = 0;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0xff;
msg.enablePort = 1;
msg.disablePort = 0;
}
/* Closing port */
else if (reset_port == 2) {
msg._txOn = 0;
msg._txOff = 1;
msg.txFlush = 0;
msg.txBreak = 0;
msg.rxOn = 0;
msg.rxOff = 1;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0;
msg.enablePort = 0;
msg.disablePort = 1;
}
/* Sending intermediate configs */
else {
msg._txOn = (!p_priv->break_on);
msg._txOff = 0;
msg.txFlush = 0;
msg.txBreak = (p_priv->break_on);
msg.rxOn = 0;
msg.rxOff = 0;
msg.rxFlush = 0;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0x0;
msg.enablePort = 0;
msg.disablePort = 0;
}
/* Do handshaking outputs */
msg.setRts = 0xff;
msg.rts = p_priv->rts_state;
msg.setDtr = 0xff;
msg.dtr = p_priv->dtr_state;
p_priv->resend_cont = 0;
/* if the device is a 49wg, we send control message on usb
control EP 0 */
if (d_details->product_id == keyspan_usa49wg_product_id) {
dr = (void *)(s_priv->ctrl_buf);
dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_OUT;
dr->bRequest = 0xB0; /* 49wg control message */;
dr->wValue = 0;
dr->wIndex = 0;
dr->wLength = cpu_to_le16(sizeof(msg));
memcpy(s_priv->glocont_buf, &msg, sizeof(msg));
usb_fill_control_urb(this_urb, serial->dev,
usb_sndctrlpipe(serial->dev, 0),
(unsigned char *)dr, s_priv->glocont_buf,
sizeof(msg), usa49_glocont_callback, serial);
} else {
memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
/* send the data out the device on control endpoint */
this_urb->transfer_buffer_length = sizeof(msg);
}
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - usb_submit_urb(setup) failed (%d)", __func__, err);
#if 0
else {
dbg("%s - usb_submit_urb(%d) OK %d bytes (end %d)", __func__,
outcont_urb, this_urb->transfer_buffer_length,
usb_pipeendpoint(this_urb->pipe));
}
#endif
return 0;
}
static int keyspan_usa90_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port)
{
struct keyspan_usa90_portControlMessage msg;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
struct urb *this_urb;
int err;
u8 prescaler;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = s_priv->device_details;
/* only do something if we have a bulk out endpoint */
this_urb = p_priv->outcont_urb;
if (this_urb == NULL) {
dbg("%s - oops no urb.", __func__);
return -1;
}
/* Save reset port val for resend.
Don't overwrite resend for open/close condition. */
if ((reset_port + 1) > p_priv->resend_cont)
p_priv->resend_cont = reset_port + 1;
if (this_urb->status == -EINPROGRESS) {
dbg("%s already writing", __func__);
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa90_portControlMessage));
/* Only set baud rate if it's changed */
if (p_priv->old_baud != p_priv->baud) {
p_priv->old_baud = p_priv->baud;
msg.setClocking = 0x01;
if (d_details->calculate_baud_rate
(p_priv->baud, d_details->baudclk, &msg.baudHi,
&msg.baudLo, &prescaler, 0) == KEYSPAN_INVALID_BAUD_RATE) {
dbg("%s - Invalid baud rate %d requested, using 9600.",
__func__, p_priv->baud);
p_priv->baud = 9600;
d_details->calculate_baud_rate(p_priv->baud, d_details->baudclk,
&msg.baudHi, &msg.baudLo, &prescaler, 0);
}
msg.setRxMode = 1;
msg.setTxMode = 1;
}
/* modes must always be correctly specified */
if (p_priv->baud > 57600) {
msg.rxMode = RXMODE_DMA;
msg.txMode = TXMODE_DMA;
} else {
msg.rxMode = RXMODE_BYHAND;
msg.txMode = TXMODE_BYHAND;
}
msg.lcr = (p_priv->cflag & CSTOPB)? STOPBITS_678_2: STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
break;
case CS6:
msg.lcr |= USA_DATABITS_6;
break;
case CS7:
msg.lcr |= USA_DATABITS_7;
break;
case CS8:
msg.lcr |= USA_DATABITS_8;
break;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
msg.lcr |= (p_priv->cflag & PARODD)?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
if (p_priv->old_cflag != p_priv->cflag) {
p_priv->old_cflag = p_priv->cflag;
msg.setLcr = 0x01;
}
if (p_priv->flow_control == flow_cts)
msg.txFlowControl = TXFLOW_CTS;
msg.setTxFlowControl = 0x01;
msg.setRxFlowControl = 0x01;
msg.rxForwardingLength = 16;
msg.rxForwardingTimeout = 16;
msg.txAckSetting = 0;
msg.xonChar = 17;
msg.xoffChar = 19;
/* Opening port */
if (reset_port == 1) {
msg.portEnabled = 1;
msg.rxFlush = 1;
msg.txBreak = (p_priv->break_on);
}
/* Closing port */
else if (reset_port == 2)
msg.portEnabled = 0;
/* Sending intermediate configs */
else {
msg.portEnabled = 1;
msg.txBreak = (p_priv->break_on);
}
/* Do handshaking outputs */
msg.setRts = 0x01;
msg.rts = p_priv->rts_state;
msg.setDtr = 0x01;
msg.dtr = p_priv->dtr_state;
p_priv->resend_cont = 0;
memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
/* send the data out the device on control endpoint */
this_urb->transfer_buffer_length = sizeof(msg);
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - usb_submit_urb(setup) failed (%d)", __func__, err);
return 0;
}
static int keyspan_usa67_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port)
{
struct keyspan_usa67_portControlMessage msg;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
struct urb *this_urb;
int err, device_port;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = s_priv->device_details;
this_urb = s_priv->glocont_urb;
/* Work out which port within the device is being setup */
device_port = port->number - port->serial->minor;
/* Make sure we have an urb then send the message */
if (this_urb == NULL) {
dbg("%s - oops no urb for port %d.", __func__,
port->number);
return -1;
}
/* Save reset port val for resend.
Don't overwrite resend for open/close condition. */
if ((reset_port + 1) > p_priv->resend_cont)
p_priv->resend_cont = reset_port + 1;
if (this_urb->status == -EINPROGRESS) {
/* dbg("%s - already writing", __func__); */
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa67_portControlMessage));
msg.port = device_port;
/* Only set baud rate if it's changed */
if (p_priv->old_baud != p_priv->baud) {
p_priv->old_baud = p_priv->baud;
msg.setClocking = 0xff;
if (d_details->calculate_baud_rate
(p_priv->baud, d_details->baudclk, &msg.baudHi,
&msg.baudLo, &msg.prescaler, device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dbg("%s - Invalid baud rate %d requested, using 9600.",
__func__, p_priv->baud);
msg.baudLo = 0;
msg.baudHi = 125; /* Values for 9600 baud */
msg.prescaler = 10;
}
msg.setPrescaler = 0xff;
}
msg.lcr = (p_priv->cflag & CSTOPB) ? STOPBITS_678_2 : STOPBITS_5678_1;
switch (p_priv->cflag & CSIZE) {
case CS5:
msg.lcr |= USA_DATABITS_5;
break;
case CS6:
msg.lcr |= USA_DATABITS_6;
break;
case CS7:
msg.lcr |= USA_DATABITS_7;
break;
case CS8:
msg.lcr |= USA_DATABITS_8;
break;
}
if (p_priv->cflag & PARENB) {
/* note USA_PARITY_NONE == 0 */
msg.lcr |= (p_priv->cflag & PARODD)?
USA_PARITY_ODD : USA_PARITY_EVEN;
}
msg.setLcr = 0xff;
msg.ctsFlowControl = (p_priv->flow_control == flow_cts);
msg.xonFlowControl = 0;
msg.setFlowControl = 0xff;
msg.forwardingLength = 16;
msg.xonChar = 17;
msg.xoffChar = 19;
if (reset_port == 1) {
/* Opening port */
msg._txOn = 1;
msg._txOff = 0;
msg.txFlush = 0;
msg.txBreak = 0;
msg.rxOn = 1;
msg.rxOff = 0;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0xff;
} else if (reset_port == 2) {
/* Closing port */
msg._txOn = 0;
msg._txOff = 1;
msg.txFlush = 0;
msg.txBreak = 0;
msg.rxOn = 0;
msg.rxOff = 1;
msg.rxFlush = 1;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0;
} else {
/* Sending intermediate configs */
msg._txOn = (!p_priv->break_on);
msg._txOff = 0;
msg.txFlush = 0;
msg.txBreak = (p_priv->break_on);
msg.rxOn = 0;
msg.rxOff = 0;
msg.rxFlush = 0;
msg.rxForward = 0;
msg.returnStatus = 0;
msg.resetDataToggle = 0x0;
}
/* Do handshaking outputs */
msg.setTxTriState_setRts = 0xff;
msg.txTriState_rts = p_priv->rts_state;
msg.setHskoa_setDtr = 0xff;
msg.hskoa_dtr = p_priv->dtr_state;
p_priv->resend_cont = 0;
memcpy(this_urb->transfer_buffer, &msg, sizeof(msg));
/* send the data out the device on control endpoint */
this_urb->transfer_buffer_length = sizeof(msg);
err = usb_submit_urb(this_urb, GFP_ATOMIC);
if (err != 0)
dbg("%s - usb_submit_urb(setup) failed (%d)", __func__,
err);
return 0;
}
static void keyspan_send_setup(struct usb_serial_port *port, int reset_port)
{
struct usb_serial *serial = port->serial;
struct keyspan_serial_private *s_priv;
const struct keyspan_device_details *d_details;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
d_details = s_priv->device_details;
switch (d_details->msg_format) {
case msg_usa26:
keyspan_usa26_send_setup(serial, port, reset_port);
break;
case msg_usa28:
keyspan_usa28_send_setup(serial, port, reset_port);
break;
case msg_usa49:
keyspan_usa49_send_setup(serial, port, reset_port);
break;
case msg_usa90:
keyspan_usa90_send_setup(serial, port, reset_port);
break;
case msg_usa67:
keyspan_usa67_send_setup(serial, port, reset_port);
break;
}
}
/* Gets called by the "real" driver (ie once firmware is loaded
and renumeration has taken place. */
static int keyspan_startup(struct usb_serial *serial)
{
int i, err;
struct usb_serial_port *port;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
const struct keyspan_device_details *d_details;
dbg("%s", __func__);
for (i = 0; (d_details = keyspan_devices[i]) != NULL; ++i)
if (d_details->product_id ==
le16_to_cpu(serial->dev->descriptor.idProduct))
break;
if (d_details == NULL) {
dev_err(&serial->dev->dev, "%s - unknown product id %x\n",
__func__, le16_to_cpu(serial->dev->descriptor.idProduct));
return 1;
}
/* Setup private data for serial driver */
s_priv = kzalloc(sizeof(struct keyspan_serial_private), GFP_KERNEL);
if (!s_priv) {
dbg("%s - kmalloc for keyspan_serial_private failed.",
__func__);
return -ENOMEM;
}
s_priv->device_details = d_details;
usb_set_serial_data(serial, s_priv);
/* Now setup per port private data */
for (i = 0; i < serial->num_ports; i++) {
port = serial->port[i];
p_priv = kzalloc(sizeof(struct keyspan_port_private),
GFP_KERNEL);
if (!p_priv) {
dbg("%s - kmalloc for keyspan_port_private (%d) failed!.", __func__, i);
return 1;
}
p_priv->device_details = d_details;
usb_set_serial_port_data(port, p_priv);
}
keyspan_setup_urbs(serial);
if (s_priv->instat_urb != NULL) {
err = usb_submit_urb(s_priv->instat_urb, GFP_KERNEL);
if (err != 0)
dbg("%s - submit instat urb failed %d", __func__,
err);
}
if (s_priv->indat_urb != NULL) {
err = usb_submit_urb(s_priv->indat_urb, GFP_KERNEL);
if (err != 0)
dbg("%s - submit indat urb failed %d", __func__,
err);
}
return 0;
}
static void keyspan_disconnect(struct usb_serial *serial)
{
int i, j;
struct usb_serial_port *port;
struct keyspan_serial_private *s_priv;
struct keyspan_port_private *p_priv;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
/* Stop reading/writing urbs */
stop_urb(s_priv->instat_urb);
stop_urb(s_priv->glocont_urb);
stop_urb(s_priv->indat_urb);
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
p_priv = usb_get_serial_port_data(port);
stop_urb(p_priv->inack_urb);
stop_urb(p_priv->outcont_urb);
for (j = 0; j < 2; j++) {
stop_urb(p_priv->in_urbs[j]);
stop_urb(p_priv->out_urbs[j]);
}
}
/* Now free them */
usb_free_urb(s_priv->instat_urb);
usb_free_urb(s_priv->indat_urb);
usb_free_urb(s_priv->glocont_urb);
for (i = 0; i < serial->num_ports; ++i) {
port = serial->port[i];
p_priv = usb_get_serial_port_data(port);
usb_free_urb(p_priv->inack_urb);
usb_free_urb(p_priv->outcont_urb);
for (j = 0; j < 2; j++) {
usb_free_urb(p_priv->in_urbs[j]);
usb_free_urb(p_priv->out_urbs[j]);
}
}
}
static void keyspan_release(struct usb_serial *serial)
{
int i;
struct usb_serial_port *port;
struct keyspan_serial_private *s_priv;
dbg("%s", __func__);
s_priv = usb_get_serial_data(serial);
/* dbg("Freeing serial->private."); */
kfree(s_priv);
/* dbg("Freeing port->private."); */
/* Now free per port private data */
for (i = 0; i < serial->num_ports; i++) {
port = serial->port[i];
kfree(usb_get_serial_port_data(port));
}
}
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("keyspan/usa28.fw");
MODULE_FIRMWARE("keyspan/usa28x.fw");
MODULE_FIRMWARE("keyspan/usa28xa.fw");
MODULE_FIRMWARE("keyspan/usa28xb.fw");
MODULE_FIRMWARE("keyspan/usa19.fw");
MODULE_FIRMWARE("keyspan/usa19qi.fw");
MODULE_FIRMWARE("keyspan/mpr.fw");
MODULE_FIRMWARE("keyspan/usa19qw.fw");
MODULE_FIRMWARE("keyspan/usa18x.fw");
MODULE_FIRMWARE("keyspan/usa19w.fw");
MODULE_FIRMWARE("keyspan/usa49w.fw");
MODULE_FIRMWARE("keyspan/usa49wlc.fw");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
Reference in New Issue View Git Blame Copy Permalink