![Greg Kroah-Hartman](/assets/img/avatar_default.png)
This reworks the usb_serial_register_drivers() and usb_serial_deregister_drivers() to not need a pointer to a struct usb_driver anymore. The usb_driver structure is now created dynamically and registered and unregistered as needed. This saves lines of code in each usb-serial driver. All in-kernel users of these functions were also fixed up at this time. The pl2303 driver was tested that everything worked properly. Thanks for the idea to do this from Alan Stern. Cc: Adhir Ramjiawan <adhirramjiawan0@gmail.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Al Borchers <alborchers@steinerpoint.com> Cc: Aleksey Babahin <tamerlan311@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andrew Worsley <amworsley@gmail.com> Cc: Bart Hartgers <bart.hartgers@gmail.com> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Dan Carpenter <error27@gmail.com> Cc: Dan Williams <dcbw@redhat.com> Cc: Donald Lee <donald@asix.com.tw> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Gary Brubaker <xavyer@ix.netcom.com> Cc: Jesper Juhl <jj@chaosbits.net> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Johan Hovold <jhovold@gmail.com> Cc: Julia Lawall <julia@diku.dk> Cc: Kautuk Consul <consul.kautuk@gmail.com> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Lonnie Mendez <dignome@gmail.com> Cc: Matthias Bruestle and Harald Welte <support@reiner-sct.com> Cc: Matthias Urlichs <smurf@smurf.noris.de> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Cc: Michal Sroczynski <msroczyn@gmail.com> Cc: "Michał Wróbel" <michal.wrobel@flytronic.pl> Cc: Oliver Neukum <oliver@neukum.name> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Berger <pberger@brimson.com> Cc: Preston Fick <preston.fick@silabs.com> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Rigbert Hamisch <rigbert@gmx.de> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Simon Arlott <simon@fire.lp0.eu> Cc: Support Department <support@connecttech.com> Cc: Thomas Tuttle <ttuttle@chromium.org> Cc: Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de> Cc: Wang YanQing <Udknight@gmail.com> Cc: William Greathouse <wgreathouse@smva.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
667 lines
18 KiB
C
667 lines
18 KiB
C
/*
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* spcp8x5 USB to serial adaptor driver
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*
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* Copyright (C) 2010 Johan Hovold (jhovold@gmail.com)
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* Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
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* Copyright (C) 2006 S1 Corp.
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*
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* Original driver for 2.6.10 pl2303 driver by
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* Greg Kroah-Hartman (greg@kroah.com)
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* Changes for 2.6.20 by Harald Klein <hari@vt100.at>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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*
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/tty.h>
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#include <linux/tty_driver.h>
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#include <linux/tty_flip.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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/* Version Information */
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#define DRIVER_VERSION "v0.10"
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#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
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static bool debug;
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#define SPCP8x5_007_VID 0x04FC
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#define SPCP8x5_007_PID 0x0201
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#define SPCP8x5_008_VID 0x04fc
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#define SPCP8x5_008_PID 0x0235
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#define SPCP8x5_PHILIPS_VID 0x0471
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#define SPCP8x5_PHILIPS_PID 0x081e
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#define SPCP8x5_INTERMATIC_VID 0x04FC
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#define SPCP8x5_INTERMATIC_PID 0x0204
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#define SPCP8x5_835_VID 0x04fc
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#define SPCP8x5_835_PID 0x0231
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static const struct usb_device_id id_table[] = {
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{ USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
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{ USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
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{ USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
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{ USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
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{ USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID)},
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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struct spcp8x5_usb_ctrl_arg {
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u8 type;
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u8 cmd;
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u8 cmd_type;
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u16 value;
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u16 index;
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u16 length;
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};
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/* spcp8x5 spec register define */
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#define MCR_CONTROL_LINE_RTS 0x02
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#define MCR_CONTROL_LINE_DTR 0x01
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#define MCR_DTR 0x01
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#define MCR_RTS 0x02
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#define MSR_STATUS_LINE_DCD 0x80
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#define MSR_STATUS_LINE_RI 0x40
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#define MSR_STATUS_LINE_DSR 0x20
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#define MSR_STATUS_LINE_CTS 0x10
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/* verdor command here , we should define myself */
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#define SET_DEFAULT 0x40
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#define SET_DEFAULT_TYPE 0x20
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#define SET_UART_FORMAT 0x40
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#define SET_UART_FORMAT_TYPE 0x21
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#define SET_UART_FORMAT_SIZE_5 0x00
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#define SET_UART_FORMAT_SIZE_6 0x01
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#define SET_UART_FORMAT_SIZE_7 0x02
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#define SET_UART_FORMAT_SIZE_8 0x03
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#define SET_UART_FORMAT_STOP_1 0x00
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#define SET_UART_FORMAT_STOP_2 0x04
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#define SET_UART_FORMAT_PAR_NONE 0x00
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#define SET_UART_FORMAT_PAR_ODD 0x10
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#define SET_UART_FORMAT_PAR_EVEN 0x30
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#define SET_UART_FORMAT_PAR_MASK 0xD0
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#define SET_UART_FORMAT_PAR_SPACE 0x90
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#define GET_UART_STATUS_TYPE 0xc0
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#define GET_UART_STATUS 0x22
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#define GET_UART_STATUS_MSR 0x06
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#define SET_UART_STATUS 0x40
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#define SET_UART_STATUS_TYPE 0x23
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#define SET_UART_STATUS_MCR 0x0004
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#define SET_UART_STATUS_MCR_DTR 0x01
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#define SET_UART_STATUS_MCR_RTS 0x02
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#define SET_UART_STATUS_MCR_LOOP 0x10
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#define SET_WORKING_MODE 0x40
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#define SET_WORKING_MODE_TYPE 0x24
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#define SET_WORKING_MODE_U2C 0x00
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#define SET_WORKING_MODE_RS485 0x01
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#define SET_WORKING_MODE_PDMA 0x02
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#define SET_WORKING_MODE_SPP 0x03
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#define SET_FLOWCTL_CHAR 0x40
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#define SET_FLOWCTL_CHAR_TYPE 0x25
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#define GET_VERSION 0xc0
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#define GET_VERSION_TYPE 0x26
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#define SET_REGISTER 0x40
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#define SET_REGISTER_TYPE 0x27
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#define GET_REGISTER 0xc0
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#define GET_REGISTER_TYPE 0x28
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#define SET_RAM 0x40
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#define SET_RAM_TYPE 0x31
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#define GET_RAM 0xc0
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#define GET_RAM_TYPE 0x32
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/* how come ??? */
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#define UART_STATE 0x08
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#define UART_STATE_TRANSIENT_MASK 0x75
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#define UART_DCD 0x01
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#define UART_DSR 0x02
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#define UART_BREAK_ERROR 0x04
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#define UART_RING 0x08
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#define UART_FRAME_ERROR 0x10
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#define UART_PARITY_ERROR 0x20
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#define UART_OVERRUN_ERROR 0x40
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#define UART_CTS 0x80
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enum spcp8x5_type {
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SPCP825_007_TYPE,
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SPCP825_008_TYPE,
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SPCP825_PHILIP_TYPE,
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SPCP825_INTERMATIC_TYPE,
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SPCP835_TYPE,
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};
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struct spcp8x5_private {
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spinlock_t lock;
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enum spcp8x5_type type;
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wait_queue_head_t delta_msr_wait;
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u8 line_control;
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u8 line_status;
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};
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/* desc : when device plug in,this function would be called.
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* thanks to usb_serial subsystem,then do almost every things for us. And what
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* we should do just alloc the buffer */
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static int spcp8x5_startup(struct usb_serial *serial)
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{
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struct spcp8x5_private *priv;
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int i;
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enum spcp8x5_type type = SPCP825_007_TYPE;
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u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
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if (product == 0x0201)
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type = SPCP825_007_TYPE;
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else if (product == 0x0231)
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type = SPCP835_TYPE;
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else if (product == 0x0235)
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type = SPCP825_008_TYPE;
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else if (product == 0x0204)
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type = SPCP825_INTERMATIC_TYPE;
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else if (product == 0x0471 &&
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serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
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type = SPCP825_PHILIP_TYPE;
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dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
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for (i = 0; i < serial->num_ports; ++i) {
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priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
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if (!priv)
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goto cleanup;
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spin_lock_init(&priv->lock);
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init_waitqueue_head(&priv->delta_msr_wait);
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priv->type = type;
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usb_set_serial_port_data(serial->port[i] , priv);
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}
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return 0;
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cleanup:
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for (--i; i >= 0; --i) {
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priv = usb_get_serial_port_data(serial->port[i]);
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kfree(priv);
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usb_set_serial_port_data(serial->port[i] , NULL);
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}
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return -ENOMEM;
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}
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/* call when the device plug out. free all the memory alloced by probe */
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static void spcp8x5_release(struct usb_serial *serial)
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{
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int i;
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for (i = 0; i < serial->num_ports; i++)
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kfree(usb_get_serial_port_data(serial->port[i]));
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}
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/* set the modem control line of the device.
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* NOTE spcp825-007 not supported this */
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static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
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enum spcp8x5_type type)
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{
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int retval;
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u8 mcr = 0 ;
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if (type == SPCP825_007_TYPE)
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return -EPERM;
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mcr = (unsigned short)value;
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retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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SET_UART_STATUS_TYPE, SET_UART_STATUS,
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mcr, 0x04, NULL, 0, 100);
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if (retval != 0)
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dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
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return retval;
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}
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/* get the modem status register of the device
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* NOTE spcp825-007 not supported this */
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static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
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enum spcp8x5_type type)
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{
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u8 *status_buffer;
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int ret;
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/* I return Permited not support here but seem inval device
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* is more fix */
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if (type == SPCP825_007_TYPE)
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return -EPERM;
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if (status == NULL)
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return -EINVAL;
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status_buffer = kmalloc(1, GFP_KERNEL);
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if (!status_buffer)
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return -ENOMEM;
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status_buffer[0] = status[0];
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ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
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GET_UART_STATUS, GET_UART_STATUS_TYPE,
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0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
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if (ret < 0)
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dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
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status_buffer, ret);
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dev_dbg(&dev->dev, "0xc0:0x22:0:6 %d - 0x%p ", ret, status_buffer);
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status[0] = status_buffer[0];
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kfree(status_buffer);
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return ret;
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}
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/* select the work mode.
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* NOTE this function not supported by spcp825-007 */
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static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
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u16 index, enum spcp8x5_type type)
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{
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int ret;
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/* I return Permited not support here but seem inval device
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* is more fix */
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if (type == SPCP825_007_TYPE)
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return;
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ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
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SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
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value, index, NULL, 0, 100);
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dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
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if (ret < 0)
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dev_dbg(&dev->dev,
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"RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
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}
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static int spcp8x5_carrier_raised(struct usb_serial_port *port)
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{
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struct spcp8x5_private *priv = usb_get_serial_port_data(port);
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if (priv->line_status & MSR_STATUS_LINE_DCD)
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return 1;
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return 0;
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}
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static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
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{
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struct spcp8x5_private *priv = usb_get_serial_port_data(port);
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unsigned long flags;
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u8 control;
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spin_lock_irqsave(&priv->lock, flags);
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if (on)
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priv->line_control = MCR_CONTROL_LINE_DTR
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| MCR_CONTROL_LINE_RTS;
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else
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priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
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| MCR_CONTROL_LINE_RTS);
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control = priv->line_control;
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spin_unlock_irqrestore(&priv->lock, flags);
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spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
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}
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static void spcp8x5_init_termios(struct tty_struct *tty)
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{
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/* for the 1st time call this function */
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*(tty->termios) = tty_std_termios;
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tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
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tty->termios->c_ispeed = 115200;
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tty->termios->c_ospeed = 115200;
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}
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/* set the serial param for transfer. we should check if we really need to
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* transfer. if we set flow control we should do this too. */
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static void spcp8x5_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port, struct ktermios *old_termios)
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{
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struct usb_serial *serial = port->serial;
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struct spcp8x5_private *priv = usb_get_serial_port_data(port);
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unsigned long flags;
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unsigned int cflag = tty->termios->c_cflag;
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unsigned int old_cflag = old_termios->c_cflag;
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unsigned short uartdata;
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unsigned char buf[2] = {0, 0};
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int baud;
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int i;
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u8 control;
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/* check that they really want us to change something */
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if (!tty_termios_hw_change(tty->termios, old_termios))
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return;
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/* set DTR/RTS active */
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spin_lock_irqsave(&priv->lock, flags);
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control = priv->line_control;
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if ((old_cflag & CBAUD) == B0) {
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priv->line_control |= MCR_DTR;
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if (!(old_cflag & CRTSCTS))
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priv->line_control |= MCR_RTS;
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}
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if (control != priv->line_control) {
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control = priv->line_control;
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spin_unlock_irqrestore(&priv->lock, flags);
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spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
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} else {
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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/* Set Baud Rate */
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baud = tty_get_baud_rate(tty);
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switch (baud) {
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case 300: buf[0] = 0x00; break;
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case 600: buf[0] = 0x01; break;
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case 1200: buf[0] = 0x02; break;
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case 2400: buf[0] = 0x03; break;
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case 4800: buf[0] = 0x04; break;
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case 9600: buf[0] = 0x05; break;
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case 19200: buf[0] = 0x07; break;
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case 38400: buf[0] = 0x09; break;
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case 57600: buf[0] = 0x0a; break;
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case 115200: buf[0] = 0x0b; break;
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case 230400: buf[0] = 0x0c; break;
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case 460800: buf[0] = 0x0d; break;
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case 921600: buf[0] = 0x0e; break;
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/* case 1200000: buf[0] = 0x0f; break; */
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/* case 2400000: buf[0] = 0x10; break; */
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case 3000000: buf[0] = 0x11; break;
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/* case 6000000: buf[0] = 0x12; break; */
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case 0:
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case 1000000:
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buf[0] = 0x0b; break;
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default:
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dev_err(&port->dev, "spcp825 driver does not support the "
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"baudrate requested, using default of 9600.\n");
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}
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/* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
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if (cflag & CSIZE) {
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switch (cflag & CSIZE) {
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case CS5:
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buf[1] |= SET_UART_FORMAT_SIZE_5;
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break;
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case CS6:
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buf[1] |= SET_UART_FORMAT_SIZE_6;
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break;
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case CS7:
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buf[1] |= SET_UART_FORMAT_SIZE_7;
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break;
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default:
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case CS8:
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buf[1] |= SET_UART_FORMAT_SIZE_8;
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break;
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}
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}
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/* Set Stop bit2 : 0:1bit 1:2bit */
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buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
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SET_UART_FORMAT_STOP_1;
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/* Set Parity bit3-4 01:Odd 11:Even */
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if (cflag & PARENB) {
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buf[1] |= (cflag & PARODD) ?
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SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
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} else
|
|
buf[1] |= SET_UART_FORMAT_PAR_NONE;
|
|
|
|
uartdata = buf[0] | buf[1]<<8;
|
|
|
|
i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
|
|
uartdata, 0, NULL, 0, 100);
|
|
if (i < 0)
|
|
dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
|
|
uartdata, i);
|
|
dbg("0x21:0x40:0:0 %d", i);
|
|
|
|
if (cflag & CRTSCTS) {
|
|
/* enable hardware flow control */
|
|
spcp8x5_set_workMode(serial->dev, 0x000a,
|
|
SET_WORKING_MODE_U2C, priv->type);
|
|
}
|
|
}
|
|
|
|
/* open the serial port. do some usb system call. set termios and get the line
|
|
* status of the device. */
|
|
static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|
{
|
|
struct ktermios tmp_termios;
|
|
struct usb_serial *serial = port->serial;
|
|
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
|
|
int ret;
|
|
unsigned long flags;
|
|
u8 status = 0x30;
|
|
/* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
|
|
|
|
usb_clear_halt(serial->dev, port->write_urb->pipe);
|
|
usb_clear_halt(serial->dev, port->read_urb->pipe);
|
|
|
|
ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
|
0x09, 0x00,
|
|
0x01, 0x00, NULL, 0x00, 100);
|
|
if (ret)
|
|
return ret;
|
|
|
|
spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
|
|
|
|
/* Setup termios */
|
|
if (tty)
|
|
spcp8x5_set_termios(tty, port, &tmp_termios);
|
|
|
|
spcp8x5_get_msr(serial->dev, &status, priv->type);
|
|
|
|
/* may be we should update uart status here but now we did not do */
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
priv->line_status = status & 0xf0 ;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
port->port.drain_delay = 256;
|
|
|
|
return usb_serial_generic_open(tty, port);
|
|
}
|
|
|
|
static void spcp8x5_process_read_urb(struct urb *urb)
|
|
{
|
|
struct usb_serial_port *port = urb->context;
|
|
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
|
|
struct tty_struct *tty;
|
|
unsigned char *data = urb->transfer_buffer;
|
|
unsigned long flags;
|
|
u8 status;
|
|
char tty_flag;
|
|
|
|
/* get tty_flag from status */
|
|
tty_flag = TTY_NORMAL;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
status = priv->line_status;
|
|
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
/* wake up the wait for termios */
|
|
wake_up_interruptible(&priv->delta_msr_wait);
|
|
|
|
if (!urb->actual_length)
|
|
return;
|
|
|
|
tty = tty_port_tty_get(&port->port);
|
|
if (!tty)
|
|
return;
|
|
|
|
if (status & UART_STATE_TRANSIENT_MASK) {
|
|
/* break takes precedence over parity, which takes precedence
|
|
* over framing errors */
|
|
if (status & UART_BREAK_ERROR)
|
|
tty_flag = TTY_BREAK;
|
|
else if (status & UART_PARITY_ERROR)
|
|
tty_flag = TTY_PARITY;
|
|
else if (status & UART_FRAME_ERROR)
|
|
tty_flag = TTY_FRAME;
|
|
dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
|
|
|
|
/* overrun is special, not associated with a char */
|
|
if (status & UART_OVERRUN_ERROR)
|
|
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
|
|
|
|
if (status & UART_DCD)
|
|
usb_serial_handle_dcd_change(port, tty,
|
|
priv->line_status & MSR_STATUS_LINE_DCD);
|
|
}
|
|
|
|
tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
|
|
urb->actual_length);
|
|
tty_flip_buffer_push(tty);
|
|
tty_kref_put(tty);
|
|
}
|
|
|
|
static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
|
|
unsigned int arg)
|
|
{
|
|
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
unsigned int prevstatus;
|
|
unsigned int status;
|
|
unsigned int changed;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
prevstatus = priv->line_status;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
while (1) {
|
|
/* wake up in bulk read */
|
|
interruptible_sleep_on(&priv->delta_msr_wait);
|
|
|
|
/* see if a signal did it */
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
status = priv->line_status;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
changed = prevstatus^status;
|
|
|
|
if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
|
|
((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
|
|
((arg & TIOCM_CD) && (changed & MSR_STATUS_LINE_DCD)) ||
|
|
((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
|
|
return 0;
|
|
|
|
prevstatus = status;
|
|
}
|
|
/* NOTREACHED */
|
|
return 0;
|
|
}
|
|
|
|
static int spcp8x5_ioctl(struct tty_struct *tty,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd);
|
|
|
|
switch (cmd) {
|
|
case TIOCMIWAIT:
|
|
dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
|
|
return spcp8x5_wait_modem_info(port, arg);
|
|
|
|
default:
|
|
dbg("%s not supported = 0x%04x", __func__, cmd);
|
|
break;
|
|
}
|
|
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
|
|
static int spcp8x5_tiocmset(struct tty_struct *tty,
|
|
unsigned int set, unsigned int clear)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
u8 control;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (set & TIOCM_RTS)
|
|
priv->line_control |= MCR_RTS;
|
|
if (set & TIOCM_DTR)
|
|
priv->line_control |= MCR_DTR;
|
|
if (clear & TIOCM_RTS)
|
|
priv->line_control &= ~MCR_RTS;
|
|
if (clear & TIOCM_DTR)
|
|
priv->line_control &= ~MCR_DTR;
|
|
control = priv->line_control;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
|
|
}
|
|
|
|
static int spcp8x5_tiocmget(struct tty_struct *tty)
|
|
{
|
|
struct usb_serial_port *port = tty->driver_data;
|
|
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
|
|
unsigned long flags;
|
|
unsigned int mcr;
|
|
unsigned int status;
|
|
unsigned int result;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
mcr = priv->line_control;
|
|
status = priv->line_status;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
|
|
| ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
|
|
| ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0)
|
|
| ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0)
|
|
| ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0)
|
|
| ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* All of the device info needed for the spcp8x5 SIO serial converter */
|
|
static struct usb_serial_driver spcp8x5_device = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "SPCP8x5",
|
|
},
|
|
.id_table = id_table,
|
|
.num_ports = 1,
|
|
.open = spcp8x5_open,
|
|
.dtr_rts = spcp8x5_dtr_rts,
|
|
.carrier_raised = spcp8x5_carrier_raised,
|
|
.set_termios = spcp8x5_set_termios,
|
|
.init_termios = spcp8x5_init_termios,
|
|
.ioctl = spcp8x5_ioctl,
|
|
.tiocmget = spcp8x5_tiocmget,
|
|
.tiocmset = spcp8x5_tiocmset,
|
|
.attach = spcp8x5_startup,
|
|
.release = spcp8x5_release,
|
|
.process_read_urb = spcp8x5_process_read_urb,
|
|
};
|
|
|
|
static struct usb_serial_driver * const serial_drivers[] = {
|
|
&spcp8x5_device, NULL
|
|
};
|
|
|
|
module_usb_serial_driver(serial_drivers, id_table);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_VERSION(DRIVER_VERSION);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|