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// SPDX-License-Identifier: GPL-2.0+
/*
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>
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/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/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
#include <linux/usb/ezusb.h>
#define DRIVER_AUTHOR "Hugh Blemings <hugh@misc.nu"
#define DRIVER_DESC "Keyspan USB to Serial Converter Driver"
/* Function prototypes for Keyspan serial converter */
static int keyspan_open(struct tty_struct *tty, struct usb_serial_port *port);
static void keyspan_close(struct usb_serial_port *port);
static void keyspan_dtr_rts(struct usb_serial_port *port, int on);
static int keyspan_startup(struct usb_serial *serial);
static void keyspan_disconnect(struct usb_serial *serial);
static void keyspan_release(struct usb_serial *serial);
static int keyspan_port_probe(struct usb_serial_port *port);
static int keyspan_port_remove(struct usb_serial_port *port);
static int keyspan_write_room(struct tty_struct *tty);
static int keyspan_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count);
static void keyspan_send_setup(struct usb_serial_port *port, int reset_port);
static void keyspan_set_termios(struct tty_struct *tty,
struct usb_serial_port *port,
struct ktermios *old);
static void keyspan_break_ctl(struct tty_struct *tty, int break_state);
static int keyspan_tiocmget(struct tty_struct *tty);
static int keyspan_tiocmset(struct tty_struct *tty, unsigned int set,
unsigned int clear);
static int keyspan_fake_startup(struct usb_serial *serial);
static int keyspan_usa19_calc_baud(struct usb_serial_port *port,
u32 baud_rate, u32 baudclk,
u8 *rate_hi, u8 *rate_low,
u8 *prescaler, int portnum);
static int keyspan_usa19w_calc_baud(struct usb_serial_port *port,
u32 baud_rate, u32 baudclk,
u8 *rate_hi, u8 *rate_low,
u8 *prescaler, int portnum);
static int keyspan_usa28_calc_baud(struct usb_serial_port *port,
u32 baud_rate, u32 baudclk,
u8 *rate_hi, u8 *rate_low,
u8 *prescaler, int portnum);
static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port,
u32 baud_rate, u32 baudclk,
u8 *rate_hi, u8 *rate_low,
u8 *prescaler, int portnum);
static int keyspan_usa28_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port);
static int keyspan_usa26_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port);
static int keyspan_usa49_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port);
static int keyspan_usa90_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port);
static int keyspan_usa67_send_setup(struct usb_serial *serial,
struct usb_serial_port *port,
int reset_port);
/* Values used for baud rate calculation - device specific */
#define KEYSPAN_INVALID_BAUD_RATE (-1)
#define KEYSPAN_BAUD_RATE_OK (0)
#define KEYSPAN_USA18X_BAUDCLK (12000000L) /* a guess */
#define KEYSPAN_USA19_BAUDCLK (12000000L)
#define KEYSPAN_USA19W_BAUDCLK (24000000L)
#define KEYSPAN_USA19HS_BAUDCLK (14769231L)
#define KEYSPAN_USA28_BAUDCLK (1843200L)
#define KEYSPAN_USA28X_BAUDCLK (12000000L)
#define KEYSPAN_USA49W_BAUDCLK (48000000L)
/* Some constants used to characterise each device. */
#define KEYSPAN_MAX_NUM_PORTS (4)
#define KEYSPAN_MAX_FLIPS (2)
/*
* Device info for the Keyspan serial converter, used by the overall
* usb-serial probe function.
*/
#define KEYSPAN_VENDOR_ID (0x06cd)
/* Product IDs for the products supported, pre-renumeration */
#define keyspan_usa18x_pre_product_id 0x0105
#define keyspan_usa19_pre_product_id 0x0103
#define keyspan_usa19qi_pre_product_id 0x010b
#define keyspan_mpr_pre_product_id 0x011b
#define keyspan_usa19qw_pre_product_id 0x0118
#define keyspan_usa19w_pre_product_id 0x0106
#define keyspan_usa28_pre_product_id 0x0101
#define keyspan_usa28x_pre_product_id 0x0102
#define keyspan_usa28xa_pre_product_id 0x0114
#define keyspan_usa28xb_pre_product_id 0x0113
#define keyspan_usa49w_pre_product_id 0x0109
#define keyspan_usa49wlc_pre_product_id 0x011a
/*
* Product IDs post-renumeration. Note that the 28x and 28xb have the same
* id's post-renumeration but behave identically so it's not an issue. As
* such, the 28xb is not listed in any of the device tables.
*/
#define keyspan_usa18x_product_id 0x0112
#define keyspan_usa19_product_id 0x0107
#define keyspan_usa19qi_product_id 0x010c
#define keyspan_usa19hs_product_id 0x0121
#define keyspan_mpr_product_id 0x011c
#define keyspan_usa19qw_product_id 0x0119
#define keyspan_usa19w_product_id 0x0108
#define keyspan_usa28_product_id 0x010f
#define keyspan_usa28x_product_id 0x0110
#define keyspan_usa28xa_product_id 0x0115
#define keyspan_usa28xb_product_id 0x0110
#define keyspan_usa28xg_product_id 0x0135
#define keyspan_usa49w_product_id 0x010a
#define keyspan_usa49wlc_product_id 0x012a
#define keyspan_usa49wg_product_id 0x0131
struct keyspan_device_details {
/* product ID value */
int product_id;
enum {msg_usa26, msg_usa28, msg_usa49, msg_usa90, msg_usa67} msg_format;
/* Number of physical ports */
int num_ports;
/* 1 if endpoint flipping used on input, 0 if not */
int indat_endp_flip;
/* 1 if endpoint flipping used on output, 0 if not */
int outdat_endp_flip;
/*
* Table mapping input data endpoint IDs to physical port
* number and flip if used
*/
int indat_endpoints[KEYSPAN_MAX_NUM_PORTS];
/* Same for output endpoints */
int outdat_endpoints[KEYSPAN_MAX_NUM_PORTS];
/* Input acknowledge endpoints */
int inack_endpoints[KEYSPAN_MAX_NUM_PORTS];
/* Output control endpoints */
int outcont_endpoints[KEYSPAN_MAX_NUM_PORTS];
/* Endpoint used for input status */
int instat_endpoint;
/* Endpoint used for input data 49WG only */
int indat_endpoint;
/* Endpoint used for global control functions */
int glocont_endpoint;
int (*calculate_baud_rate)(struct usb_serial_port *port,
u32 baud_rate, u32 baudclk,
u8 *rate_hi, u8 *rate_low, u8 *prescaler,
int portnum);
u32 baudclk;
};
/*
* Now for each device type we setup the device detail structure with the
* appropriate information (provided in Keyspan's documentation)
*/
static const struct keyspan_device_details usa18x_device_details = {
.product_id = keyspan_usa18x_product_id,
.msg_format = msg_usa26,
.num_ports = 1,
.indat_endp_flip = 0,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {0x85},
.outcont_endpoints = {0x05},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA18X_BAUDCLK,
};
static const struct keyspan_device_details usa19_device_details = {
.product_id = keyspan_usa19_product_id,
.msg_format = msg_usa28,
.num_ports = 1,
.indat_endp_flip = 1,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {0x83},
.outcont_endpoints = {0x03},
.instat_endpoint = 0x84,
.indat_endpoint = -1,
.glocont_endpoint = -1,
.calculate_baud_rate = keyspan_usa19_calc_baud,
.baudclk = KEYSPAN_USA19_BAUDCLK,
};
static const struct keyspan_device_details usa19qi_device_details = {
.product_id = keyspan_usa19qi_product_id,
.msg_format = msg_usa28,
.num_ports = 1,
.indat_endp_flip = 1,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {0x83},
.outcont_endpoints = {0x03},
.instat_endpoint = 0x84,
.indat_endpoint = -1,
.glocont_endpoint = -1,
.calculate_baud_rate = keyspan_usa28_calc_baud,
.baudclk = KEYSPAN_USA19_BAUDCLK,
};
static const struct keyspan_device_details mpr_device_details = {
.product_id = keyspan_mpr_product_id,
.msg_format = msg_usa28,
.num_ports = 1,
.indat_endp_flip = 1,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {0x83},
.outcont_endpoints = {0x03},
.instat_endpoint = 0x84,
.indat_endpoint = -1,
.glocont_endpoint = -1,
.calculate_baud_rate = keyspan_usa28_calc_baud,
.baudclk = KEYSPAN_USA19_BAUDCLK,
};
static const struct keyspan_device_details usa19qw_device_details = {
.product_id = keyspan_usa19qw_product_id,
.msg_format = msg_usa26,
.num_ports = 1,
.indat_endp_flip = 0,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {0x85},
.outcont_endpoints = {0x05},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA19W_BAUDCLK,
};
static const struct keyspan_device_details usa19w_device_details = {
.product_id = keyspan_usa19w_product_id,
.msg_format = msg_usa26,
.num_ports = 1,
.indat_endp_flip = 0,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {0x85},
.outcont_endpoints = {0x05},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA19W_BAUDCLK,
};
static const struct keyspan_device_details usa19hs_device_details = {
.product_id = keyspan_usa19hs_product_id,
.msg_format = msg_usa90,
.num_ports = 1,
.indat_endp_flip = 0,
.outdat_endp_flip = 0,
.indat_endpoints = {0x81},
.outdat_endpoints = {0x01},
.inack_endpoints = {-1},
.outcont_endpoints = {0x02},
.instat_endpoint = 0x82,
.indat_endpoint = -1,
.glocont_endpoint = -1,
.calculate_baud_rate = keyspan_usa19hs_calc_baud,
.baudclk = KEYSPAN_USA19HS_BAUDCLK,
};
static const struct keyspan_device_details usa28_device_details = {
.product_id = keyspan_usa28_product_id,
.msg_format = msg_usa28,
.num_ports = 2,
.indat_endp_flip = 1,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81, 0x83},
.outdat_endpoints = {0x01, 0x03},
.inack_endpoints = {0x85, 0x86},
.outcont_endpoints = {0x05, 0x06},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa28_calc_baud,
.baudclk = KEYSPAN_USA28_BAUDCLK,
};
static const struct keyspan_device_details usa28x_device_details = {
.product_id = keyspan_usa28x_product_id,
.msg_format = msg_usa26,
.num_ports = 2,
.indat_endp_flip = 0,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81, 0x83},
.outdat_endpoints = {0x01, 0x03},
.inack_endpoints = {0x85, 0x86},
.outcont_endpoints = {0x05, 0x06},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA28X_BAUDCLK,
};
static const struct keyspan_device_details usa28xa_device_details = {
.product_id = keyspan_usa28xa_product_id,
.msg_format = msg_usa26,
.num_ports = 2,
.indat_endp_flip = 0,
.outdat_endp_flip = 1,
.indat_endpoints = {0x81, 0x83},
.outdat_endpoints = {0x01, 0x03},
.inack_endpoints = {0x85, 0x86},
.outcont_endpoints = {0x05, 0x06},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA28X_BAUDCLK,
};
static const struct keyspan_device_details usa28xg_device_details = {
.product_id = keyspan_usa28xg_product_id,
.msg_format = msg_usa67,
.num_ports = 2,
.indat_endp_flip = 0,
.outdat_endp_flip = 0,
.indat_endpoints = {0x84, 0x88},
.outdat_endpoints = {0x02, 0x06},
.inack_endpoints = {-1, -1},
.outcont_endpoints = {-1, -1},
.instat_endpoint = 0x81,
.indat_endpoint = -1,
.glocont_endpoint = 0x01,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA28X_BAUDCLK,
};
/*
* We don't need a separate entry for the usa28xb as it appears as a 28x
* anyway.
*/
static const struct keyspan_device_details usa49w_device_details = {
.product_id = keyspan_usa49w_product_id,
.msg_format = msg_usa49,
.num_ports = 4,
.indat_endp_flip = 0,
.outdat_endp_flip = 0,
.indat_endpoints = {0x81, 0x82, 0x83, 0x84},
.outdat_endpoints = {0x01, 0x02, 0x03, 0x04},
.inack_endpoints = {-1, -1, -1, -1},
.outcont_endpoints = {-1, -1, -1, -1},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA49W_BAUDCLK,
};
static const struct keyspan_device_details usa49wlc_device_details = {
.product_id = keyspan_usa49wlc_product_id,
.msg_format = msg_usa49,
.num_ports = 4,
.indat_endp_flip = 0,
.outdat_endp_flip = 0,
.indat_endpoints = {0x81, 0x82, 0x83, 0x84},
.outdat_endpoints = {0x01, 0x02, 0x03, 0x04},
.inack_endpoints = {-1, -1, -1, -1},
.outcont_endpoints = {-1, -1, -1, -1},
.instat_endpoint = 0x87,
.indat_endpoint = -1,
.glocont_endpoint = 0x07,
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA19W_BAUDCLK,
};
static const struct keyspan_device_details usa49wg_device_details = {
.product_id = keyspan_usa49wg_product_id,
.msg_format = msg_usa49,
.num_ports = 4,
.indat_endp_flip = 0,
.outdat_endp_flip = 0,
.indat_endpoints = {-1, -1, -1, -1}, /* single 'global' data in EP */
.outdat_endpoints = {0x01, 0x02, 0x04, 0x06},
.inack_endpoints = {-1, -1, -1, -1},
.outcont_endpoints = {-1, -1, -1, -1},
.instat_endpoint = 0x81,
.indat_endpoint = 0x88,
.glocont_endpoint = 0x00, /* uses control EP */
.calculate_baud_rate = keyspan_usa19w_calc_baud,
.baudclk = KEYSPAN_USA19W_BAUDCLK,
};
static const struct keyspan_device_details *keyspan_devices[] = {
&usa18x_device_details,
&usa19_device_details,
&usa19qi_device_details,
&mpr_device_details,
&usa19qw_device_details,
&usa19w_device_details,
&usa19hs_device_details,
&usa28_device_details,
&usa28x_device_details,
&usa28xa_device_details,
&usa28xg_device_details,
/* 28xb not required as it renumerates as a 28x */
&usa49w_device_details,
&usa49wlc_device_details,
&usa49wg_device_details,
NULL,
};
static const struct usb_device_id keyspan_ids_combined[] = {
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19hs_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id)},
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, keyspan_ids_combined);
/* usb_device_id table for the pre-firmware download keyspan devices */
static const struct usb_device_id keyspan_pre_ids[] = {
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xb_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_pre_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_pre_product_id) },
{ } /* Terminating entry */
};
static const struct usb_device_id keyspan_1port_ids[] = {
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa18x_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qi_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19qw_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19w_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa19hs_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_mpr_product_id) },
{ } /* Terminating entry */
};
static const struct usb_device_id keyspan_2port_ids[] = {
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28x_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xa_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa28xg_product_id) },
{ } /* Terminating entry */
};
static const struct usb_device_id keyspan_4port_ids[] = {
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49w_product_id) },
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wlc_product_id)},
{ USB_DEVICE(KEYSPAN_VENDOR_ID, keyspan_usa49wg_product_id)},
{ } /* Terminating entry */
};
#define INSTAT_BUFLEN 32
#define GLOCONT_BUFLEN 64
#define INDAT49W_BUFLEN 512
#define IN_BUFLEN 64
#define OUT_BUFLEN 64
#define INACK_BUFLEN 1
#define OUTCONT_BUFLEN 64
/* 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;
/* 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;
/* XXX this one probably will need a lock */
struct urb *glocont_urb;
char *glocont_buf;
char *ctrl_buf; /* 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];
/* Output endpoints and buffer for this port */
struct urb *out_urbs[2];
char *out_buffer[2];
/* Input ack endpoint */
struct urb *inack_urb;
char *inack_buffer;
/* Output control endpoint */
struct urb *outcont_urb;
char *outcont_buffer;
/* 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"
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;
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;
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
cflag = tty->termios.c_cflag;
device_port = port->port_number;
/* 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(port, 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 - calculate 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;
}
dev_dbg(&port->dev, "%s - %d chars, flip=%d\n", __func__, 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 */
dev_dbg(&port->dev, "%s - no output urb :(\n", __func__);
return count;
}
dev_dbg(&port->dev, "%s - endpoint %x flip %d\n",
__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)
dev_dbg(&port->dev, "usb_submit_urb(write bulk) failed (%d)\n", 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;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
__func__, status, endpoint);
return;
}
port = urb->context;
if (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) {
tty_insert_flip_char(&port->port, 0,
TTY_OVERRUN);
}
for (i = 1; i < urb->actual_length ; ++i)
tty_insert_flip_char(&port->port, data[i],
TTY_NORMAL);
} else {
/* some bytes had errors, every byte has status */
dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
for (i = 0; i + 1 < urb->actual_length; i += 2) {
int stat = data[i];
int flag = TTY_NORMAL;
if (stat & RXERROR_OVERRUN) {
tty_insert_flip_char(&port->port, 0,
TTY_OVERRUN);
}
/* XXX should handle break (0x10) */
if (stat & RXERROR_PARITY)
flag = TTY_PARITY;
else if (stat & RXERROR_FRAMING)
flag = TTY_FRAME;
tty_insert_flip_char(&port->port, data[i+1],
flag);
}
}
tty_flip_buffer_push(&port->port);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __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);
dev_dbg(&port->dev, "%s - urb %d\n", __func__, urb == p_priv->out_urbs[1]);
usb_serial_port_softint(port);
}
static void usa26_inack_callback(struct urb *urb)
{
}
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) {
dev_dbg(&port->dev, "%s - sending setup\n", __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;
int old_dcd_state, err;
int status = urb->status;
serial = urb->context;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
__func__, status);
return;
}
if (urb->actual_length != 9) {
dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __func__, urb->actual_length);
goto exit;
}
msg = (struct keyspan_usa26_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
if (msg->port >= serial->num_ports) {
dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
goto exit;
}
port = serial->port[msg->port];
p_priv = usb_get_serial_port_data(port);
if (!p_priv)
goto resubmit;
/* 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_port_tty_hangup(&port->port, true);
resubmit:
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
exit: ;
}
static void usa26_glocont_callback(struct urb *urb)
{
}
static void usa28_indat_callback(struct urb *urb)
{
int err;
struct usb_serial_port *port;
unsigned char *data;
struct keyspan_port_private *p_priv;
int status = urb->status;
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) {
dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
__func__, status, usb_pipeendpoint(urb->pipe));
return;
}
port = urb->context;
p_priv = usb_get_serial_port_data(port);
data = urb->transfer_buffer;
if (urb->actual_length) {
tty_insert_flip_string(&port->port, data,
urb->actual_length);
tty_flip_buffer_push(&port->port);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n",
__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)
{
}
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) {
dev_dbg(&port->dev, "%s - sending setup\n", __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;
int old_dcd_state;
int status = urb->status;
serial = urb->context;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
__func__, status);
return;
}
if (urb->actual_length != sizeof(struct keyspan_usa28_portStatusMessage)) {
dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
goto exit;
}
msg = (struct keyspan_usa28_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
if (msg->port >= serial->num_ports) {
dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
goto exit;
}
port = serial->port[msg->port];
p_priv = usb_get_serial_port_data(port);
if (!p_priv)
goto resubmit;
/* 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_port_tty_hangup(&port->port, true);
resubmit:
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
exit: ;
}
static void usa28_glocont_callback(struct urb *urb)
{
}
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;
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) {
dev_dbg(&port->dev, "%s - sending setup\n", __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;
serial = urb->context;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
__func__, status);
return;
}
if (urb->actual_length !=
sizeof(struct keyspan_usa49_portStatusMessage)) {
dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __func__, urb->actual_length);
goto exit;
}
msg = (struct keyspan_usa49_portStatusMessage *)data;
/* Check port number from message and retrieve private data */
if (msg->portNumber >= serial->num_ports) {
dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n",
__func__, msg->portNumber);
goto exit;
}
port = serial->port[msg->portNumber];
p_priv = usb_get_serial_port_data(port);
if (!p_priv)
goto resubmit;
/* 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_port_tty_hangup(&port->port, true);
resubmit:
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
exit: ;
}
static void usa49_inack_callback(struct urb *urb)
{
}
static void usa49_indat_callback(struct urb *urb)
{
int i, err;
int endpoint;
struct usb_serial_port *port;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
__func__, status, endpoint);
return;
}
port = urb->context;
if (urb->actual_length) {
/* 0x80 bit is error flag */
if ((data[0] & 0x80) == 0) {
/* no error on any byte */
tty_insert_flip_string(&port->port, 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];
int flag = TTY_NORMAL;
if (stat & RXERROR_OVERRUN) {
tty_insert_flip_char(&port->port, 0,
TTY_OVERRUN);
}
/* XXX should handle break (0x10) */
if (stat & RXERROR_PARITY)
flag = TTY_PARITY;
else if (stat & RXERROR_FRAMING)
flag = TTY_FRAME;
tty_insert_flip_char(&port->port, data[i+1],
flag);
}
}
tty_flip_buffer_push(&port->port);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
}
static void usa49wg_indat_callback(struct urb *urb)
{
int i, len, x, err;
struct usb_serial *serial;
struct usb_serial_port *port;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
serial = urb->context;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
__func__, status);
return;
}
/* inbound data is in the form P#, len, status, data */
i = 0;
len = 0;
while (i < urb->actual_length) {
/* Check port number from message */
if (data[i] >= serial->num_ports) {
dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n",
__func__, data[i]);
return;
}
port = serial->port[data[i++]];
len = data[i++];
/* 0x80 bit is error flag */
if ((data[i] & 0x80) == 0) {
/* no error on any byte */
i++;
for (x = 1; x < len && i < urb->actual_length; ++x)
tty_insert_flip_char(&port->port,
data[i++], 0);
} else {
/*
* some bytes had errors, every byte has status
*/
for (x = 0; x + 1 < len &&
i + 1 < urb->actual_length; x += 2) {
int stat = data[i];
int flag = TTY_NORMAL;
if (stat & RXERROR_OVERRUN) {
tty_insert_flip_char(&port->port, 0,
TTY_OVERRUN);
}
/* XXX should handle break (0x10) */
if (stat & RXERROR_PARITY)
flag = TTY_PARITY;
else if (stat & RXERROR_FRAMING)
flag = TTY_FRAME;
tty_insert_flip_char(&port->port, data[i+1],
flag);
i += 2;
}
}
tty_flip_buffer_push(&port->port);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&urb->dev->dev, "%s - resubmit read urb failed. (%d)\n", __func__, err);
}
/* not used, usa-49 doesn't have per-port control endpoints */
static void usa49_outcont_callback(struct urb *urb)
{
}
static void usa90_indat_callback(struct urb *urb)
{
int i, err;
int endpoint;
struct usb_serial_port *port;
struct keyspan_port_private *p_priv;
unsigned char *data = urb->transfer_buffer;
int status = urb->status;
endpoint = usb_pipeendpoint(urb->pipe);
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status %d on endpoint %x\n",
__func__, status, endpoint);
return;
}
port = urb->context;
p_priv = usb_get_serial_port_data(port);
if (urb->actual_length) {
/* if current mode is DMA, looks like usa28 format
otherwise looks like usa26 data format */
if (p_priv->baud > 57600)
tty_insert_flip_string(&port->port, 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) {
tty_insert_flip_char(&port->port, 0,
TTY_OVERRUN);
}
for (i = 1; i < urb->actual_length ; ++i)
tty_insert_flip_char(&port->port,
data[i], TTY_NORMAL);
} else {
/* some bytes had errors, every byte has status */
dev_dbg(&port->dev, "%s - RX error!!!!\n", __func__);
for (i = 0; i + 1 < urb->actual_length; i += 2) {
int stat = data[i];
int flag = TTY_NORMAL;
if (stat & RXERROR_OVERRUN) {
tty_insert_flip_char(
&port->port, 0,
TTY_OVERRUN);
}
/* XXX should handle break (0x10) */
if (stat & RXERROR_PARITY)
flag = TTY_PARITY;
else if (stat & RXERROR_FRAMING)
flag = TTY_FRAME;
tty_insert_flip_char(&port->port,
data[i+1], flag);
}
}
}
tty_flip_buffer_push(&port->port);
}
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __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;
int old_dcd_state, err;
int status = urb->status;
serial = urb->context;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
__func__, status);
return;
}
if (urb->actual_length < 14) {
dev_dbg(&urb->dev->dev, "%s - %d byte report??\n", __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);
if (!p_priv)
goto resubmit;
/* 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_port_tty_hangup(&port->port, true);
resubmit:
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __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) {
dev_dbg(&urb->dev->dev, "%s - sending setup\n", __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;
serial = urb->context;
if (status) {
dev_dbg(&urb->dev->dev, "%s - nonzero status: %d\n",
__func__, status);
return;
}
if (urb->actual_length !=
sizeof(struct keyspan_usa67_portStatusMessage)) {
dev_dbg(&urb->dev->dev, "%s - bad length %d\n", __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) {
dev_dbg(&urb->dev->dev, "%s - Unexpected port number %d\n", __func__, msg->port);
return;
}
port = serial->port[msg->port];
p_priv = usb_get_serial_port_data(port);
if (!p_priv)
goto resubmit;
/* 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)
tty_port_tty_hangup(&port->port, true);
resubmit:
/* Resubmit urb so we continue receiving */
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err != 0)
dev_dbg(&port->dev, "%s - resubmit read urb failed. (%d)\n", __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;
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) {
dev_dbg(&port->dev, "%s - sending setup\n", __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;
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;
const struct keyspan_device_details *d_details;
int i, err;
int baud_rate, device_port;
struct urb *urb;
unsigned int cflag = 0;
p_priv = usb_get_serial_port_data(port);
d_details = p_priv->device_details;
/* 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)
dev_dbg(&port->dev, "%s - submit urb %d failed (%d)\n", __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->port_number;
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(port, 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 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 keyspan_port_private *p_priv;
p_priv = usb_get_serial_port_data(port);
p_priv->rts_state = 0;
p_priv->dtr_state = 0;
keyspan_send_setup(port, 2);
/* pilot-xfer seems to work best with this delay */
mdelay(100);
p_priv->out_flip = 0;
p_priv->in_flip = 0;
usb_kill_urb(p_priv->inack_urb);
for (i = 0; i < 2; i++) {
usb_kill_urb(p_priv->in_urbs[i]);
usb_kill_urb(p_priv->out_urbs[i]);
}
}
/* download the firmware to a pre-renumeration device */
static int keyspan_fake_startup(struct usb_serial *serial)
{
char *fw_name;
dev_dbg(&serial->dev->dev, "Keyspan startup version %04x product %04x\n",
le16_to_cpu(serial->dev->descriptor.bcdDevice),
le16_to_cpu(serial->dev->descriptor.idProduct));
if ((le16_to_cpu(serial->dev->descriptor.bcdDevice) & 0x8000)
!= 0x8000) {
dev_dbg(&serial->dev->dev, "Firmware already loaded. Quitting.\n");
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;
}
dev_dbg(&serial->dev->dev, "Uploading Keyspan %s firmware.\n", fw_name);
if (ezusb_fx1_ihex_firmware_download(serial->dev, fw_name) < 0) {
dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n",
fw_name);
return -ENOENT;
}
/* after downloading firmware Renumeration will occur in a
moment and the new device will bind to the real driver */
/* 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 */
dev_dbg(&serial->interface->dev, "%s - alloc for endpoint %x\n",
__func__, endpoint);
urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */
if (!urb)
return NULL;
if (endpoint == 0) {
/* control EP filled in when used */
return urb;
}
ep_desc = find_ep(serial, endpoint);
if (!ep_desc) {
usb_free_urb(urb);
return NULL;
}
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;
}
dev_dbg(&serial->interface->dev, "%s - using urb %p for %s endpoint %x\n",
__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)
{
struct keyspan_serial_private *s_priv;
const struct keyspan_device_details *d_details;
struct callbacks *cback;
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);
}
/* usa19 function doesn't require prescaler */
static int keyspan_usa19_calc_baud(struct usb_serial_port *port,
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) */
dev_dbg(&port->dev, "%s - %d.\n", __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)
dev_dbg(&port->dev, "%s - %d %02x %02x.\n",
__func__, baud_rate, *rate_hi, *rate_low);
return KEYSPAN_BAUD_RATE_OK;
}
/* usa19hs function doesn't require prescaler */
static int keyspan_usa19hs_calc_baud(struct usb_serial_port *port,
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 */
dev_dbg(&port->dev, "%s - %d.\n", __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)
dev_dbg(&port->dev, "%s - %d %02x %02x.\n",
__func__, baud_rate, *rate_hi, *rate_low);
return KEYSPAN_BAUD_RATE_OK;
}
static int keyspan_usa19w_calc_baud(struct usb_serial_port *port,
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;
dev_dbg(&port->dev, "%s - %d.\n", __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;
/* dev_dbg(&port->dev, "%s - %d %d\n", __func__, *prescaler, div); */
}
return KEYSPAN_BAUD_RATE_OK;
}
/* USA-28 supports different maximum baud rates on each port */
static int keyspan_usa28_calc_baud(struct usb_serial_port *port,
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) */
dev_dbg(&port->dev, "%s - %d.\n", __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);
dev_dbg(&port->dev, "%s - %d OK.\n", __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;
struct urb *this_urb;
int device_port, err;
dev_dbg(&port->dev, "%s reset=%d\n", __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->port_number;
this_urb = p_priv->outcont_urb;
/* Make sure we have an urb then send the message */
if (this_urb == NULL) {
dev_dbg(&port->dev, "%s - oops no urb.\n", __func__);
return -1;
}
dev_dbg(&port->dev, "%s - endpoint %x\n",
__func__, usb_pipeendpoint(this_urb->pipe));
/* 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) {
/* dev_dbg(&port->dev, "%s - already writing\n", __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(port, p_priv->baud, d_details->baudclk,
&msg.baudHi, &msg.baudLo, &msg.prescaler,
device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
__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)
dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
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;
s_priv = usb_get_serial_data(serial);
p_priv = usb_get_serial_port_data(port);
d_details = s_priv->device_details;
device_port = port->port_number;
/* only do something if we have a bulk out endpoint */
this_urb = p_priv->outcont_urb;
if (this_urb == NULL) {
dev_dbg(&port->dev, "%s - oops no urb.\n", __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) {
dev_dbg(&port->dev, "%s already writing\n", __func__);
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa28_portControlMessage));
msg.setBaudRate = 1;
if (d_details->calculate_baud_rate(port, p_priv->baud, d_details->baudclk,
&msg.baudHi, &msg.baudLo, NULL,
device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dev_dbg(&port->dev, "%s - Invalid baud rate requested %d.\n",
__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)
dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed\n", __func__);
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;
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->port_number;
/* Make sure we have an urb then send the message */
if (this_urb == NULL) {
dev_dbg(&port->dev, "%s - oops no urb for port.\n", __func__);
return -1;
}
dev_dbg(&port->dev, "%s - endpoint %x (%d)\n",
__func__, usb_pipeendpoint(this_urb->pipe), 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) {
/* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
mdelay(5);
return -1;
}
memset(&msg, 0, sizeof(struct keyspan_usa49_portControlMessage));
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(port, p_priv->baud, d_details->baudclk,
&msg.baudHi, &msg.baudLo, &msg.prescaler,
device_port) == KEYSPAN_INVALID_BAUD_RATE) {
dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
__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)
dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __func__, err);
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;
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) {
dev_dbg(&port->dev, "%s - oops no urb.\n", __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) {
dev_dbg(&port->dev, "%s already writing\n", __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(port, p_priv->baud, d_details->baudclk,
&msg.baudHi, &msg.baudLo, &prescaler, 0) == KEYSPAN_INVALID_BAUD_RATE) {
dev_dbg(&port->dev, "%s - Invalid baud rate %d requested, using 9600.\n",
__func__, p_priv->baud);
p_priv->baud = 9600;
d_details->calculate_baud_rate(port, 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)
dev_dbg(&port->dev, "%s - usb_submit_urb(setup) failed (%d)\n", __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;
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->port_number;
/* Make sure we have an urb then send the message */
if (this_urb == NULL) {
dev_dbg(&port->dev, "%s - oops no urb for port.\n", __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) {
/* dev_dbg(&port->dev, "%s - already writing\n", __func__); */
mdelay(5);
return -1;