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-rw-r--r--include/linux/tty_driver.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index b08677982525..db2d227694da 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -224,6 +224,12 @@
224 * unless the tty also has a valid tty->termiox pointer. 224 * unless the tty also has a valid tty->termiox pointer.
225 * 225 *
226 * Optional: Called under the termios lock 226 * Optional: Called under the termios lock
227 *
228 * int (*get_icount)(struct tty_struct *tty, struct serial_icounter *icount);
229 *
230 * Called when the device receives a TIOCGICOUNT ioctl. Passed a kernel
231 * structure to complete. This method is optional and will only be called
232 * if provided (otherwise EINVAL will be returned).
227 */ 233 */
228 234
229#include <linux/fs.h> 235#include <linux/fs.h>
@@ -232,6 +238,7 @@
232 238
233struct tty_struct; 239struct tty_struct;
234struct tty_driver; 240struct tty_driver;
241struct serial_icounter_struct;
235 242
236struct tty_operations { 243struct tty_operations {
237 struct tty_struct * (*lookup)(struct tty_driver *driver, 244 struct tty_struct * (*lookup)(struct tty_driver *driver,
@@ -268,6 +275,8 @@ struct tty_operations {
268 unsigned int set, unsigned int clear); 275 unsigned int set, unsigned int clear);
269 int (*resize)(struct tty_struct *tty, struct winsize *ws); 276 int (*resize)(struct tty_struct *tty, struct winsize *ws);
270 int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew); 277 int (*set_termiox)(struct tty_struct *tty, struct termiox *tnew);
278 int (*get_icount)(struct tty_struct *tty,
279 struct serial_icounter_struct *icount);
271#ifdef CONFIG_CONSOLE_POLL 280#ifdef CONFIG_CONSOLE_POLL
272 int (*poll_init)(struct tty_driver *driver, int line, char *options); 281 int (*poll_init)(struct tty_driver *driver, int line, char *options);
273 int (*poll_get_char)(struct tty_driver *driver, int line); 282 int (*poll_get_char)(struct tty_driver *driver, int line);