| /linux/drivers/tty/ |
| H A D | tty_io.c | 7 * 'tty_io.c' gives an orthogonal feeling to tty's, be they consoles
16 * dynamically allocated only when the tty is open.
19 * between the high-level tty routines (tty_io.c and tty_ioctl.c) and
20 * the low-level tty routines (serial.c, pty.c, console.c). This
31 * Added functionality to the OPOST tty handling. No delays, but all
76 #include <linux/tty.h>
112 #include "tty.h"
116 # define tty_debug_hangup(tty, f, args...) tty_debug(tty, f, ##args) argument
118 # define tty_debug_hangup(tty, f, args...) do { } while (0) argument
124 struct ktermios tty_std_termios = { /* for the benefit of tty drivers */
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| H A D | tty_ldisc.c | 7 #include <linux/tty.h>
22 #include "tty.h"
27 #define tty_ldisc_debug(tty, f, args...) tty_debug(tty, f, ##args) argument
29 #define tty_ldisc_debug(tty, f, args...) argument
32 /* lockdep nested classes for tty->ldisc_sem */
123 * @tty: tty device
139 static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc) in tty_ldisc_get() argument
155 request_module("tty-ldisc-%d", disc); in tty_ldisc_get()
167 ld->tty = tty; in tty_ldisc_get()
223 * tty_ldisc_ref_wait - wait for the tty ldisc
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| H A D | n_tty.c | 46 #include <linux/tty.h>
51 #include "tty.h"
63 * unthrottling the TTY driver. These watermarks are used for
155 static void zero_buffer(const struct tty_struct *tty, u8 *buffer, size_t size) in zero_buffer() argument
157 if (L_ICANON(tty) && !L_ECHO(tty)) in zero_buffer()
161 static void tty_copy(const struct tty_struct *tty, void *to, size_t tail, in tty_copy() argument
164 struct n_tty_data *ldata = tty->disc_data; in tty_copy()
169 tty_audit_add_data(tty, from, size); in tty_copy()
171 zero_buffer(tty, from, size); in tty_copy()
177 tty_audit_add_data(tty, from, n); in tty_copy()
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| H A D | tty_jobctrl.c | 11 #include <linux/tty.h>
14 #include "tty.h"
24 * @tty: tty to check
33 int __tty_check_change(struct tty_struct *tty, int sig) in __tty_check_change() argument
39 if (current->signal->tty != tty) in __tty_check_change()
45 spin_lock_irqsave(&tty->ctrl.lock, flags); in __tty_check_change()
46 tty_pgrp = tty->ctrl.pgrp; in __tty_check_change()
47 spin_unlock_irqrestore(&tty->ctrl.lock, flags); in __tty_check_change()
64 tty_warn(tty, "sig=%d, tty->pgrp == NULL!\n", sig); in __tty_check_change()
69 int tty_check_change(struct tty_struct *tty) in tty_check_change() argument
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| H A D | tty_ioctl.c | 17 #include <linux/tty.h>
26 #include "tty.h"
43 * @tty: terminal
48 unsigned int tty_chars_in_buffer(struct tty_struct *tty) in tty_chars_in_buffer() argument
50 if (tty->ops->chars_in_buffer) in tty_chars_in_buffer()
51 return tty->ops->chars_in_buffer(tty); in tty_chars_in_buffer()
58 * @tty: terminal
66 unsigned int tty_write_room(struct tty_struct *tty) in tty_write_room() argument
68 if (tty->ops->write_room) in tty_write_room()
69 return tty->ops->write_room(tty); in tty_write_room()
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| H A D | pty.c | 13 #include <linux/tty.h>
32 #include "tty.h"
36 # define tty_debug_hangup(tty, f, args...) tty_debug(tty, f, ##args) argument
38 # define tty_debug_hangup(tty, f, args...) do {} while (0) argument
47 static void pty_close(struct tty_struct *tty, struct file *filp) in pty_close() argument
49 if (tty->driver->subtype == PTY_TYPE_MASTER) in pty_close()
50 WARN_ON(tty->count > 1); in pty_close()
52 if (tty_io_error(tty)) in pty_close()
54 if (tty->count > 2) in pty_close()
57 set_bit(TTY_IO_ERROR, &tty->flags); in pty_close()
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| H A D | tty.h | 3 * TTY core internal functions
9 #define tty_msg(fn, tty, f, ...) \ argument
10 fn("%s %s: " f, tty_driver_name(tty), tty_name(tty), ##__VA_ARGS__)
12 #define tty_debug(tty, f, ...) tty_msg(pr_debug, tty, f, ##__VA_ARGS__) argument
13 #define tty_notice(tty, f, ...) tty_msg(pr_notice, tty, f, ##__VA_ARGS__) argument
14 #define tty_warn(tty, f, ...) tty_msg(pr_warn, tty, f, ##__VA_ARGS__) argument
15 #define tty_err(tty, f, ...) tty_msg(pr_err, tty, f, ##__VA_ARGS__) argument
17 #define tty_info_ratelimited(tty, f, ...) \ argument
18 tty_msg(pr_info_ratelimited, tty, f, ##__VA_ARGS__)
21 * Lock subclasses for tty locks
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| H A D | tty_mutex.c | 2 #include <linux/tty.h>
7 #include "tty.h"
9 /* Legacy tty mutex glue */
12 * Getting the big tty mutex.
15 void tty_lock(struct tty_struct *tty) in tty_lock() argument
17 tty_kref_get(tty); in tty_lock()
18 mutex_lock(&tty->legacy_mutex); in tty_lock()
22 int tty_lock_interruptible(struct tty_struct *tty) in tty_lock_interruptible() argument
26 tty_kref_get(tty); in tty_lock_interruptible()
27 ret = mutex_lock_interruptible(&tty->legacy_mutex); in tty_lock_interruptible()
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| H A D | n_hdlc.c | 15 * This module implements the tty line discipline N_HDLC for use with
16 * tty device drivers that support bit-synchronous HDLC communications.
20 * 1. tty write calls represent one complete transmit frame of data
33 * the tty flip buffer and call the line discipline receive
39 * tty read calls.
41 * 3. tty read calls returns an entire frame of data or nothing.
45 * of the tty flags
52 * These conventions allow the standard tty programming interface
92 #include <linux/tty.h>
94 #include <linux/string.h> /* used in new tty drivers */
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| H A D | rpmsg_tty.c | 5 * The rpmsg tty driver implements serial communication on the RPMsg bus to makes
7 * tty protocol.
9 * The remote processor can instantiate a new tty by requesting a "rpmsg-tty" RPMsg service.
10 * The "rpmsg-tty" service is directly used for data exchange. No flow control is implemented yet.
18 #include <linux/tty.h>
24 static DEFINE_IDR(tty_idr); /* tty instance id */
30 struct tty_port port; /* TTY port data */
31 int id; /* TTY rpmsg index */
50 static int rpmsg_tty_install(struct tty_driver *driver, struct tty_struct *tty) in rpmsg_tty_install() argument
52 struct rpmsg_tty_port *cport = idr_find(&tty_idr, tty->index); in rpmsg_tty_install()
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| H A D | vcc.c | 12 #include <linux/tty.h>
27 struct tty_struct *tty; /* only populated while dev is open */ member
35 /* This buffer is required to support the tty write_room interface
277 static int vcc_rx_check(struct tty_struct *tty, int size) in vcc_rx_check() argument
279 if (WARN_ON(!tty || !tty->port)) in vcc_rx_check()
285 if (test_bit(TTY_THROTTLED, &tty->flags) || in vcc_rx_check()
286 (tty_buffer_request_room(tty->port, VCC_BUFF_LEN) < VCC_BUFF_LEN)) in vcc_rx_check()
292 static int vcc_rx(struct tty_struct *tty, char *buf, int size) in vcc_rx() argument
296 if (WARN_ON(!tty || !tty->port)) in vcc_rx()
299 len = tty_insert_flip_string(tty->port, buf, size); in vcc_rx()
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| H A D | goldfish.c | 11 #include <linux/tty.h>
22 /* Goldfish tty register's offsets */
30 /* Goldfish tty commands */
83 * Goldfish TTY for Ranchu platform uses in goldfish_tty_rw()
102 dev_err(qtty->dev, "tty: DMA mapping error.\n"); in goldfish_tty_rw()
117 * Old style Goldfish TTY used on the Goldfish platform in goldfish_tty_rw()
150 static int goldfish_tty_activate(struct tty_port *port, struct tty_struct *tty) in goldfish_tty_activate() argument
165 static int goldfish_tty_open(struct tty_struct *tty, struct file *filp) in goldfish_tty_open() argument
167 struct goldfish_tty *qtty = &goldfish_ttys[tty->index]; in goldfish_tty_open()
168 return tty_port_open(&qtty->port, tty, filp); in goldfish_tty_open()
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| /linux/drivers/tty/ipwireless/ |
| H A D | tty.c | 28 #include <linux/tty.h>
33 #include "tty.h"
90 struct ipw_tty *tty = get_tty(linux_tty->index); in ipw_open() local
92 if (!tty) in ipw_open()
95 mutex_lock(&tty->ipw_tty_mutex); in ipw_open()
96 if (tty->port.count == 0) in ipw_open()
97 tty->tx_bytes_queued = 0; in ipw_open()
99 tty->port.count++; in ipw_open()
101 tty->port.tty = linux_tty; in ipw_open()
102 linux_tty->driver_data = tty; in ipw_open()
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| /linux/drivers/accessibility/speakup/ |
| H A D | spk_ttyio.c | 3 #include <linux/tty.h>
47 static int spk_ttyio_ldisc_open(struct tty_struct *tty) in spk_ttyio_ldisc_open() argument
51 if (tty != speakup_tty) in spk_ttyio_ldisc_open()
55 if (!tty->ops->write) in spk_ttyio_ldisc_open()
64 tty->disc_data = ldisc_data; in spk_ttyio_ldisc_open()
69 static void spk_ttyio_ldisc_close(struct tty_struct *tty) in spk_ttyio_ldisc_close() argument
71 kfree(tty->disc_data); in spk_ttyio_ldisc_close()
74 static size_t spk_ttyio_receive_buf2(struct tty_struct *tty, const u8 *cp, in spk_ttyio_receive_buf2() argument
77 struct spk_ldisc_data *ldisc_data = tty->disc_data; in spk_ttyio_receive_buf2()
135 static inline void get_termios(struct tty_struct *tty, in get_termios() argument
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| H A D | selection.c | 9 #include <linux/tty.h>
22 struct tty_struct *tty; member
30 struct tty_struct *tty; in __speakup_set_selection() local
38 /* release the lock by setting tty of the struct to NULL */ in __speakup_set_selection()
39 tty = xchg(&ssw->tty, NULL); in __speakup_set_selection()
51 set_selection_kernel(&sel, tty); in __speakup_set_selection()
54 tty_kref_put(tty); in __speakup_set_selection()
62 int speakup_set_selection(struct tty_struct *tty) in speakup_set_selection() argument
66 * invariant that if speakup_sel_work.tty is not NULL when in speakup_set_selection()
70 tty_kref_get(tty); in speakup_set_selection()
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| /linux/net/nfc/nci/ |
| H A D | uart.c | 23 #include <linux/tty.h>
74 struct tty_struct *tty = nu->tty; in nci_uart_write_work() local
86 set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); in nci_uart_write_work()
87 len = tty->ops->write(tty, skb->data, skb->len); in nci_uart_write_work()
105 static int nci_uart_set_driver(struct tty_struct *tty, unsigned int driver) in nci_uart_set_driver() argument
121 nu->tty = tty; in nci_uart_set_driver()
135 tty->disc_data = nu; in nci_uart_set_driver()
147 * tty pointer to tty info structure
151 static int nci_uart_tty_open(struct tty_struct *tty) in nci_uart_tty_open() argument
153 /* Error if the tty has no write op instead of leaving an exploitable in nci_uart_tty_open()
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| /linux/drivers/bluetooth/ |
| H A D | hci_ldisc.c | 22 #include <linux/tty.h>
121 * tty is being closed because that is the only time the write lock is in hci_uart_tx_wakeup()
150 struct tty_struct *tty = hu->tty; in hci_uart_write_work() local
164 set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); in hci_uart_write_work()
165 len = tty->ops->write(tty, skb->data, skb->len); in hci_uart_write_work()
230 struct tty_struct *tty = hu->tty; in hci_uart_flush() local
232 BT_DBG("hdev %p tty %p", hdev, tty); in hci_uart_flush()
239 tty_ldisc_flush(tty); in hci_uart_flush()
240 tty_driver_flush_buffer(tty); in hci_uart_flush()
297 /* Check the underlying device or tty has flow control support */
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| /linux/drivers/input/serio/ |
| H A D | serport.c | 3 * Input device TTY line discipline
7 * This is a module that converts a tty line into a much simpler
19 #include <linux/tty.h>
23 MODULE_DESCRIPTION("Input device TTY line discipline");
32 struct tty_struct *tty; member
47 return -(serport->tty->ops->write(serport->tty, &data, 1) != 1); in serport_serio_write()
71 * discipline on a tty. It prepares the serio struct.
74 static int serport_ldisc_open(struct tty_struct *tty) in serport_ldisc_open() argument
85 serport->tty = tty; in serport_ldisc_open()
89 tty->disc_data = serport; in serport_ldisc_open()
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| /linux/tools/testing/selftests/tty/ |
| H A D | tty_tstamp_update.c | 16 static bool tty_valid(char *tty) in tty_valid() argument
18 if (strlen(tty) < MIN_TTY_PATH_LEN) in tty_valid()
21 if (strncmp(tty, "/dev/tty", MIN_TTY_PATH_LEN) == 0 || in tty_valid()
22 strncmp(tty, "/dev/pts", MIN_TTY_PATH_LEN) == 0) in tty_valid()
33 f = fopen("/dev/tty", "r+"); in write_dev_tty()
48 char tty[PATH_MAX] = {}; in main() local
55 r = readlink("/proc/self/fd/0", tty, PATH_MAX); in main()
61 if (!tty_valid(tty)) { in main()
62 ksft_print_msg("invalid tty path '%s'\n", tty); in main()
68 r = stat(tty, &st1); in main()
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| /linux/drivers/mmc/core/ |
| H A D | sdio_uart.c | 34 #include <linux/tty.h>
141 * the tty layer. Be careful to prevent any further access in sdio_uart_port_remove()
142 * to the SDIO function and arrange for the tty layer to in sdio_uart_port_remove()
411 struct tty_struct *tty; in sdio_uart_transmit_chars() local
422 tty = tty_port_tty_get(&port->port); in sdio_uart_transmit_chars()
424 if (tty == NULL || !kfifo_len(xmit) || in sdio_uart_transmit_chars()
425 tty->flow.stopped || tty->hw_stopped) { in sdio_uart_transmit_chars()
427 tty_kref_put(tty); in sdio_uart_transmit_chars()
439 tty_wakeup(tty); in sdio_uart_transmit_chars()
443 tty_kref_put(tty); in sdio_uart_transmit_chars()
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| /linux/drivers/misc/bcm-vk/ |
| H A D | bcm_vk_tty.c | 6 #include <linux/tty.h>
77 /* Check the card status that the tty channel is ready */ in bcm_vk_tty_wq_handler()
81 vktty = &vk->tty[i]; in bcm_vk_tty_wq_handler()
83 /* Don't increment read index if tty app is closed */ in bcm_vk_tty_wq_handler()
104 * insert into tty flip buffer in bcm_vk_tty_wq_handler()
106 while (vk->tty[i].rd != wr) { in bcm_vk_tty_wq_handler()
126 static int bcm_vk_tty_open(struct tty_struct *tty, struct file *file) in bcm_vk_tty_open() argument
134 tty->driver_data = NULL; in bcm_vk_tty_open()
136 vk = (struct bcm_vk *)dev_get_drvdata(tty->dev); in bcm_vk_tty_open()
137 index = tty->index; in bcm_vk_tty_open()
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| /linux/net/bluetooth/rfcomm/ |
| H A D | tty.c | 25 * RFCOMM TTY.
30 #include <linux/tty.h>
110 static int rfcomm_dev_activate(struct tty_port *port, struct tty_struct *tty) in rfcomm_dev_activate() argument
117 set_bit(TTY_IO_ERROR, &tty->flags); in rfcomm_dev_activate()
321 struct device *tty; in rfcomm_dev_add() local
331 tty = tty_port_register_device(&dev->port, rfcomm_tty_driver, in rfcomm_dev_add()
333 if (IS_ERR(tty)) { in rfcomm_dev_add()
335 return PTR_ERR(tty); in rfcomm_dev_add()
338 dev->tty_dev = tty; in rfcomm_dev_add()
465 /* Shut down TTY synchronously before freeing rfcomm_dev */ in __rfcomm_release_dev()
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| /linux/drivers/usb/host/ |
| H A D | xhci-dbgtty.c | 3 * xhci-dbgtty.c - tty glue for xHCI debug capability
11 #include <linux/tty.h>
84 if (do_tty_wake && port->port.tty) in dbc_do_start_tx()
85 tty_wakeup(port->port.tty); in dbc_do_start_tx()
110 if (!port->port.tty) in dbc_start_rx()
129 * Queue received data to tty buffer and push it.
131 * Returns nr of remaining bytes that didn't fit tty buffer, i.e. 0 if all
144 /* if n_read is set then request was partially moved to tty buffer */ in dbc_rx_push_buffer()
168 struct tty_struct *tty; in dbc_read_complete() local
171 tty = port->port.tty; in dbc_read_complete()
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-tty | 1 What: /sys/class/tty/console/active
12 What: /sys/class/tty/tty<x>/active
21 What: /sys/class/tty/ttyS<x>/uartclk
26 UART port in serial_core, that is bound to TTY like ttyS0.
32 What: /sys/class/tty/ttyS<x>/type
36 Shows the current tty type for this port.
41 What: /sys/class/tty/ttyS<x>/line
45 Shows the current tty line number for this port.
50 What: /sys/class/tty/ttyS<x>/port
54 Shows the current tty port I/O address for this port.
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| /linux/Documentation/driver-api/tty/ |
| H A D | index.rst | 4 TTY title
7 Teletypewriter (TTY) layer takes care of all those serial devices. Including
10 TTY structures
13 There are several major TTY structures. Every TTY device in a system has a
14 corresponding struct tty_port. These devices are maintained by a TTY driver
19 tty_operations are invoked by the TTY layer.
29 In-detail description of the named TTY structures is in separate documents:
43 Writing TTY Driver
46 Before one starts writing a TTY driver, they must consider
50 directly by the TTY Layer. If you are about to write such a driver, read on.
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