698 lines
18 KiB
C
698 lines
18 KiB
C
/*
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* Copyright 2004 Digi International (www.digi.com)
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* Scott H Kilau <Scott_Kilau at digi dot com>
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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, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/ctype.h>
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#include <linux/string.h>
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#include <linux/serial_reg.h>
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#include <linux/device.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include "dgnc_driver.h"
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#include "dgnc_mgmt.h"
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static ssize_t dgnc_driver_version_show(struct device_driver *ddp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
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}
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static DRIVER_ATTR(version, S_IRUSR, dgnc_driver_version_show, NULL);
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static ssize_t dgnc_driver_boards_show(struct device_driver *ddp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", dgnc_NumBoards);
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}
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static DRIVER_ATTR(boards, S_IRUSR, dgnc_driver_boards_show, NULL);
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static ssize_t dgnc_driver_maxboards_show(struct device_driver *ddp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
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}
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static DRIVER_ATTR(maxboards, S_IRUSR, dgnc_driver_maxboards_show, NULL);
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static ssize_t dgnc_driver_pollrate_show(struct device_driver *ddp, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%dms\n", dgnc_poll_tick);
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}
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static ssize_t dgnc_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
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{
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int ret;
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ret = sscanf(buf, "%d\n", &dgnc_poll_tick);
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if (ret != 1)
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return -EINVAL;
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return count;
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}
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static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgnc_driver_pollrate_show, dgnc_driver_pollrate_store);
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void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver)
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{
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int rc = 0;
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struct device_driver *driverfs = &dgnc_driver->driver;
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rc |= driver_create_file(driverfs, &driver_attr_version);
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rc |= driver_create_file(driverfs, &driver_attr_boards);
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rc |= driver_create_file(driverfs, &driver_attr_maxboards);
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rc |= driver_create_file(driverfs, &driver_attr_pollrate);
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if (rc)
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pr_err("DGNC: sysfs driver_create_file failed!\n");
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}
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void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
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{
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struct device_driver *driverfs = &dgnc_driver->driver;
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driver_remove_file(driverfs, &driver_attr_version);
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driver_remove_file(driverfs, &driver_attr_boards);
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driver_remove_file(driverfs, &driver_attr_maxboards);
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driver_remove_file(driverfs, &driver_attr_pollrate);
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}
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#define DGNC_VERIFY_BOARD(p, bd) \
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do { \
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if (!p) \
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return 0; \
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\
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bd = dev_get_drvdata(p); \
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if (!bd || bd->magic != DGNC_BOARD_MAGIC) \
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return 0; \
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if (bd->state != BOARD_READY) \
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return 0; \
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} while (0)
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static ssize_t dgnc_vpd_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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count += sprintf(buf + count, "\n 0 1 2 3 4 5 6 7 8 9 A B C D E F");
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for (i = 0; i < 0x40 * 2; i++) {
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if (!(i % 16))
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count += sprintf(buf + count, "\n%04X ", i * 2);
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count += sprintf(buf + count, "%02X ", bd->vpd[i]);
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}
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count += sprintf(buf + count, "\n");
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return count;
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}
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static DEVICE_ATTR(vpd, S_IRUSR, dgnc_vpd_show, NULL);
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static ssize_t dgnc_serial_number_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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DGNC_VERIFY_BOARD(p, bd);
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if (bd->serial_num[0] == '\0')
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count += sprintf(buf + count, "<UNKNOWN>\n");
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else
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count += sprintf(buf + count, "%s\n", bd->serial_num);
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return count;
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}
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static DEVICE_ATTR(serial_number, S_IRUSR, dgnc_serial_number_show, NULL);
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static ssize_t dgnc_ports_state_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count,
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"%d %s\n", bd->channels[i]->ch_portnum,
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bd->channels[i]->ch_open_count ? "Open" : "Closed");
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}
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return count;
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}
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static DEVICE_ATTR(ports_state, S_IRUSR, dgnc_ports_state_show, NULL);
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static ssize_t dgnc_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count,
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"%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_old_baud);
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}
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return count;
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}
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static DEVICE_ATTR(ports_baud, S_IRUSR, dgnc_ports_baud_show, NULL);
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static ssize_t dgnc_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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if (bd->channels[i]->ch_open_count) {
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count += snprintf(buf + count, PAGE_SIZE - count,
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"%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum,
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(bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
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(bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
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(bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
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(bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
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(bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
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(bd->channels[i]->ch_mistat & UART_MSR_RI) ? "RI" : "");
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} else {
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count += snprintf(buf + count, PAGE_SIZE - count,
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"%d\n", bd->channels[i]->ch_portnum);
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}
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}
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return count;
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}
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static DEVICE_ATTR(ports_msignals, S_IRUSR, dgnc_ports_msignals_show, NULL);
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static ssize_t dgnc_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag);
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}
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return count;
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}
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static DEVICE_ATTR(ports_iflag, S_IRUSR, dgnc_ports_iflag_show, NULL);
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static ssize_t dgnc_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag);
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}
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return count;
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}
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static DEVICE_ATTR(ports_cflag, S_IRUSR, dgnc_ports_cflag_show, NULL);
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static ssize_t dgnc_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag);
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}
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return count;
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}
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static DEVICE_ATTR(ports_oflag, S_IRUSR, dgnc_ports_oflag_show, NULL);
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static ssize_t dgnc_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag);
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}
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return count;
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}
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static DEVICE_ATTR(ports_lflag, S_IRUSR, dgnc_ports_lflag_show, NULL);
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static ssize_t dgnc_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags);
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}
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return count;
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}
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static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgnc_ports_digi_flag_show, NULL);
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static ssize_t dgnc_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount);
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}
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return count;
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}
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static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgnc_ports_rxcount_show, NULL);
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static ssize_t dgnc_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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int count = 0;
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int i = 0;
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DGNC_VERIFY_BOARD(p, bd);
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for (i = 0; i < bd->nasync; i++) {
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count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
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bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount);
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}
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return count;
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}
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static DEVICE_ATTR(ports_txcount, S_IRUSR, dgnc_ports_txcount_show, NULL);
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/* this function creates the sys files that will export each signal status
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* to sysfs each value will be put in a separate filename
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*/
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void dgnc_create_ports_sysfiles(struct dgnc_board *bd)
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{
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int rc = 0;
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dev_set_drvdata(&bd->pdev->dev, bd);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_vpd);
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rc |= device_create_file(&(bd->pdev->dev), &dev_attr_serial_number);
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if (rc)
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dev_err(&bd->pdev->dev, "dgnc: sysfs device_create_file failed!\n");
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}
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/* removes all the sys files created for that port */
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void dgnc_remove_ports_sysfiles(struct dgnc_board *bd)
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{
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
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device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
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device_remove_file(&(bd->pdev->dev), &dev_attr_vpd);
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device_remove_file(&(bd->pdev->dev), &dev_attr_serial_number);
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}
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static ssize_t dgnc_tty_state_show(struct device *d, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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struct channel_t *ch;
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struct un_t *un;
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if (!d)
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return 0;
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un = dev_get_drvdata(d);
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if (!un || un->magic != DGNC_UNIT_MAGIC)
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return 0;
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ch = un->un_ch;
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if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
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return 0;
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bd = ch->ch_bd;
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if (!bd || bd->magic != DGNC_BOARD_MAGIC)
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return 0;
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if (bd->state != BOARD_READY)
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return 0;
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return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" : "Closed");
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}
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static DEVICE_ATTR(state, S_IRUSR, dgnc_tty_state_show, NULL);
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static ssize_t dgnc_tty_baud_show(struct device *d, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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struct channel_t *ch;
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struct un_t *un;
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if (!d)
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return 0;
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un = dev_get_drvdata(d);
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if (!un || un->magic != DGNC_UNIT_MAGIC)
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return 0;
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ch = un->un_ch;
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if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
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return 0;
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bd = ch->ch_bd;
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if (!bd || bd->magic != DGNC_BOARD_MAGIC)
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return 0;
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if (bd->state != BOARD_READY)
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return 0;
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return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_old_baud);
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}
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static DEVICE_ATTR(baud, S_IRUSR, dgnc_tty_baud_show, NULL);
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static ssize_t dgnc_tty_msignals_show(struct device *d, struct device_attribute *attr, char *buf)
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{
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struct dgnc_board *bd;
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struct channel_t *ch;
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struct un_t *un;
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if (!d)
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return 0;
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un = dev_get_drvdata(d);
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if (!un || un->magic != DGNC_UNIT_MAGIC)
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return 0;
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ch = un->un_ch;
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if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
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return 0;
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bd = ch->ch_bd;
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if (!bd || bd->magic != DGNC_BOARD_MAGIC)
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return 0;
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if (bd->state != BOARD_READY)
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return 0;
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if (ch->ch_open_count) {
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return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
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(ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
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(ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
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(ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
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(ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
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(ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
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(ch->ch_mistat & UART_MSR_RI) ? "RI" : "");
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}
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return 0;
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}
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static DEVICE_ATTR(msignals, S_IRUSR, dgnc_tty_msignals_show, NULL);
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static ssize_t dgnc_tty_iflag_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
|
|
}
|
|
static DEVICE_ATTR(iflag, S_IRUSR, dgnc_tty_iflag_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_cflag_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
|
|
}
|
|
static DEVICE_ATTR(cflag, S_IRUSR, dgnc_tty_cflag_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_oflag_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
|
|
}
|
|
static DEVICE_ATTR(oflag, S_IRUSR, dgnc_tty_oflag_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_lflag_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
|
|
}
|
|
static DEVICE_ATTR(lflag, S_IRUSR, dgnc_tty_lflag_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_digi_flag_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
|
|
}
|
|
static DEVICE_ATTR(digi_flag, S_IRUSR, dgnc_tty_digi_flag_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_rxcount_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
|
|
}
|
|
static DEVICE_ATTR(rxcount, S_IRUSR, dgnc_tty_rxcount_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_txcount_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
|
|
}
|
|
static DEVICE_ATTR(txcount, S_IRUSR, dgnc_tty_txcount_show, NULL);
|
|
|
|
|
|
static ssize_t dgnc_tty_name_show(struct device *d, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct dgnc_board *bd;
|
|
struct channel_t *ch;
|
|
struct un_t *un;
|
|
|
|
if (!d)
|
|
return 0;
|
|
un = dev_get_drvdata(d);
|
|
if (!un || un->magic != DGNC_UNIT_MAGIC)
|
|
return 0;
|
|
ch = un->un_ch;
|
|
if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
|
|
return 0;
|
|
bd = ch->ch_bd;
|
|
if (!bd || bd->magic != DGNC_BOARD_MAGIC)
|
|
return 0;
|
|
if (bd->state != BOARD_READY)
|
|
return 0;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%sn%d%c\n",
|
|
(un->un_type == DGNC_PRINT) ? "pr" : "tty",
|
|
bd->boardnum + 1, 'a' + ch->ch_portnum);
|
|
}
|
|
static DEVICE_ATTR(custom_name, S_IRUSR, dgnc_tty_name_show, NULL);
|
|
|
|
|
|
static struct attribute *dgnc_sysfs_tty_entries[] = {
|
|
&dev_attr_state.attr,
|
|
&dev_attr_baud.attr,
|
|
&dev_attr_msignals.attr,
|
|
&dev_attr_iflag.attr,
|
|
&dev_attr_cflag.attr,
|
|
&dev_attr_oflag.attr,
|
|
&dev_attr_lflag.attr,
|
|
&dev_attr_digi_flag.attr,
|
|
&dev_attr_rxcount.attr,
|
|
&dev_attr_txcount.attr,
|
|
&dev_attr_custom_name.attr,
|
|
NULL
|
|
};
|
|
|
|
|
|
static struct attribute_group dgnc_tty_attribute_group = {
|
|
.name = NULL,
|
|
.attrs = dgnc_sysfs_tty_entries,
|
|
};
|
|
|
|
|
|
void dgnc_create_tty_sysfs(struct un_t *un, struct device *c)
|
|
{
|
|
int ret;
|
|
|
|
ret = sysfs_create_group(&c->kobj, &dgnc_tty_attribute_group);
|
|
if (ret) {
|
|
dev_err(c, "dgnc: failed to create sysfs tty device attributes.\n");
|
|
sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
|
|
return;
|
|
}
|
|
|
|
dev_set_drvdata(c, un);
|
|
|
|
}
|
|
|
|
|
|
void dgnc_remove_tty_sysfs(struct device *c)
|
|
{
|
|
sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
|
|
}
|
|
|