diff options
author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
---|---|---|
committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/staging/dgnc/dgnc_sysfs.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/staging/dgnc/dgnc_sysfs.c')
-rw-r--r-- | kernel/drivers/staging/dgnc/dgnc_sysfs.c | 697 |
1 files changed, 697 insertions, 0 deletions
diff --git a/kernel/drivers/staging/dgnc/dgnc_sysfs.c b/kernel/drivers/staging/dgnc/dgnc_sysfs.c new file mode 100644 index 000000000..65551d190 --- /dev/null +++ b/kernel/drivers/staging/dgnc/dgnc_sysfs.c @@ -0,0 +1,697 @@ +/* + * Copyright 2004 Digi International (www.digi.com) + * Scott H Kilau <Scott_Kilau at digi dot com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the + * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + * PURPOSE. See the GNU General Public License for more details. + */ + + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/ctype.h> +#include <linux/string.h> +#include <linux/serial_reg.h> +#include <linux/device.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> + +#include "dgnc_driver.h" +#include "dgnc_mgmt.h" + + +static ssize_t dgnc_driver_version_show(struct device_driver *ddp, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART); +} +static DRIVER_ATTR(version, S_IRUSR, dgnc_driver_version_show, NULL); + + +static ssize_t dgnc_driver_boards_show(struct device_driver *ddp, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", dgnc_NumBoards); +} +static DRIVER_ATTR(boards, S_IRUSR, dgnc_driver_boards_show, NULL); + + +static ssize_t dgnc_driver_maxboards_show(struct device_driver *ddp, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS); +} +static DRIVER_ATTR(maxboards, S_IRUSR, dgnc_driver_maxboards_show, NULL); + + +static ssize_t dgnc_driver_pollrate_show(struct device_driver *ddp, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "%dms\n", dgnc_poll_tick); +} + +static ssize_t dgnc_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count) +{ + int ret; + + ret = sscanf(buf, "%d\n", &dgnc_poll_tick); + if (ret != 1) + return -EINVAL; + return count; +} +static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgnc_driver_pollrate_show, dgnc_driver_pollrate_store); + + +void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver) +{ + int rc = 0; + struct device_driver *driverfs = &dgnc_driver->driver; + + rc |= driver_create_file(driverfs, &driver_attr_version); + rc |= driver_create_file(driverfs, &driver_attr_boards); + rc |= driver_create_file(driverfs, &driver_attr_maxboards); + rc |= driver_create_file(driverfs, &driver_attr_pollrate); + if (rc) + pr_err("DGNC: sysfs driver_create_file failed!\n"); +} + + +void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver) +{ + struct device_driver *driverfs = &dgnc_driver->driver; + + driver_remove_file(driverfs, &driver_attr_version); + driver_remove_file(driverfs, &driver_attr_boards); + driver_remove_file(driverfs, &driver_attr_maxboards); + driver_remove_file(driverfs, &driver_attr_pollrate); +} + + +#define DGNC_VERIFY_BOARD(p, bd) \ + do { \ + if (!p) \ + return 0; \ + \ + bd = dev_get_drvdata(p); \ + if (!bd || bd->magic != DGNC_BOARD_MAGIC) \ + return 0; \ + if (bd->state != BOARD_READY) \ + return 0; \ + } while (0) + + + +static ssize_t dgnc_vpd_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + count += sprintf(buf + count, "\n 0 1 2 3 4 5 6 7 8 9 A B C D E F"); + for (i = 0; i < 0x40 * 2; i++) { + if (!(i % 16)) + count += sprintf(buf + count, "\n%04X ", i * 2); + count += sprintf(buf + count, "%02X ", bd->vpd[i]); + } + count += sprintf(buf + count, "\n"); + + return count; +} +static DEVICE_ATTR(vpd, S_IRUSR, dgnc_vpd_show, NULL); + +static ssize_t dgnc_serial_number_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + + DGNC_VERIFY_BOARD(p, bd); + + if (bd->serial_num[0] == '\0') + count += sprintf(buf + count, "<UNKNOWN>\n"); + else + count += sprintf(buf + count, "%s\n", bd->serial_num); + + return count; +} +static DEVICE_ATTR(serial_number, S_IRUSR, dgnc_serial_number_show, NULL); + + +static ssize_t dgnc_ports_state_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, + "%d %s\n", bd->channels[i]->ch_portnum, + bd->channels[i]->ch_open_count ? "Open" : "Closed"); + } + return count; +} +static DEVICE_ATTR(ports_state, S_IRUSR, dgnc_ports_state_show, NULL); + + +static ssize_t dgnc_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, + "%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_old_baud); + } + return count; +} +static DEVICE_ATTR(ports_baud, S_IRUSR, dgnc_ports_baud_show, NULL); + + +static ssize_t dgnc_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + if (bd->channels[i]->ch_open_count) { + count += snprintf(buf + count, PAGE_SIZE - count, + "%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum, + (bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "", + (bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "", + (bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "", + (bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "", + (bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "", + (bd->channels[i]->ch_mistat & UART_MSR_RI) ? "RI" : ""); + } else { + count += snprintf(buf + count, PAGE_SIZE - count, + "%d\n", bd->channels[i]->ch_portnum); + } + } + return count; +} +static DEVICE_ATTR(ports_msignals, S_IRUSR, dgnc_ports_msignals_show, NULL); + + +static ssize_t dgnc_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag); + } + return count; +} +static DEVICE_ATTR(ports_iflag, S_IRUSR, dgnc_ports_iflag_show, NULL); + + +static ssize_t dgnc_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag); + } + return count; +} +static DEVICE_ATTR(ports_cflag, S_IRUSR, dgnc_ports_cflag_show, NULL); + + +static ssize_t dgnc_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag); + } + return count; +} +static DEVICE_ATTR(ports_oflag, S_IRUSR, dgnc_ports_oflag_show, NULL); + + +static ssize_t dgnc_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag); + } + return count; +} +static DEVICE_ATTR(ports_lflag, S_IRUSR, dgnc_ports_lflag_show, NULL); + + +static ssize_t dgnc_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags); + } + return count; +} +static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgnc_ports_digi_flag_show, NULL); + + +static ssize_t dgnc_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount); + } + return count; +} +static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgnc_ports_rxcount_show, NULL); + + +static ssize_t dgnc_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf) +{ + struct dgnc_board *bd; + int count = 0; + int i = 0; + + DGNC_VERIFY_BOARD(p, bd); + + for (i = 0; i < bd->nasync; i++) { + count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n", + bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount); + } + return count; +} +static DEVICE_ATTR(ports_txcount, S_IRUSR, dgnc_ports_txcount_show, NULL); + + +/* this function creates the sys files that will export each signal status + * to sysfs each value will be put in a separate filename + */ +void dgnc_create_ports_sysfiles(struct dgnc_board *bd) +{ + int rc = 0; + + dev_set_drvdata(&bd->pdev->dev, bd); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_vpd); + rc |= device_create_file(&(bd->pdev->dev), &dev_attr_serial_number); + if (rc) + dev_err(&bd->pdev->dev, "dgnc: sysfs device_create_file failed!\n"); +} + + +/* removes all the sys files created for that port */ +void dgnc_remove_ports_sysfiles(struct dgnc_board *bd) +{ + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount); + device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount); + device_remove_file(&(bd->pdev->dev), &dev_attr_vpd); + device_remove_file(&(bd->pdev->dev), &dev_attr_serial_number); +} + + +static ssize_t dgnc_tty_state_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, "%s", un->un_open_count ? "Open" : "Closed"); +} +static DEVICE_ATTR(state, S_IRUSR, dgnc_tty_state_show, NULL); + + +static ssize_t dgnc_tty_baud_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, "%d\n", ch->ch_old_baud); +} +static DEVICE_ATTR(baud, S_IRUSR, dgnc_tty_baud_show, NULL); + + +static ssize_t dgnc_tty_msignals_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; + + if (ch->ch_open_count) { + return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n", + (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "", + (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "", + (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "", + (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "", + (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "", + (ch->ch_mistat & UART_MSR_RI) ? "RI" : ""); + } + return 0; +} +static DEVICE_ATTR(msignals, S_IRUSR, dgnc_tty_msignals_show, NULL); + + +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); +} + |