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s390/tty3270: add tty3270_create_view()

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Will be used later for the console driver.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Sven Schnelle
2022-11-28 19:24:15 +01:00
committed by Heiko Carstens
parent df386f15b2
commit a21e962e12
1 changed files with 33 additions and 24 deletions
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57
drivers/s390/char/tty3270.c
View File

@@ -953,27 +953,14 @@ static struct raw3270_fn tty3270_fn = {
.resize = tty3270_resize
};
/*
* This routine is called whenever a 3270 tty is opened first time.
*/
static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
static int
tty3270_create_view(int index, struct tty3270 **newtp)
{
struct raw3270_view *view;
struct tty3270 *tp;
int i, rc;
/* Check if the tty3270 is already there. */
view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR);
if (!IS_ERR(view)) {
tp = container_of(view, struct tty3270, view);
tty->driver_data = tp;
tty->winsize.ws_row = tp->view.rows - 2;
tty->winsize.ws_col = tp->view.cols;
tp->inattr = TF_INPUT;
goto port_install;
}
if (tty3270_max_index < tty->index + 1)
tty3270_max_index = tty->index + 1;
if (tty3270_max_index < index + 1)
tty3270_max_index = index + 1;
/* Allocate tty3270 structure on first open. */
tp = tty3270_alloc_view();
@@ -981,7 +968,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
return PTR_ERR(tp);
rc = raw3270_add_view(&tp->view, &tty3270_fn,
tty->index + RAW3270_FIRSTMINOR,
index + RAW3270_FIRSTMINOR,
RAW3270_VIEW_LOCK_BH);
if (rc) {
tty3270_free_view(tp);
@@ -997,9 +984,6 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
return rc;
}
tty->winsize.ws_row = tp->view.rows - 2;
tty->winsize.ws_col = tp->view.cols;
tty3270_create_prompt(tp);
tty3270_create_status(tp);
tty3270_update_status(tp);
@@ -1016,16 +1000,41 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
kbd_ascebc(tp->kbd, tp->view.ascebc);
raw3270_activate_view(&tp->view);
raw3270_put_view(&tp->view);
*newtp = tp;
return 0;
}
port_install:
/*
* This routine is called whenever a 3270 tty is opened first time.
*/
static int
tty3270_install(struct tty_driver *driver, struct tty_struct *tty)
{
struct raw3270_view *view;
struct tty3270 *tp;
int rc;
/* Check if the tty3270 is already there. */
view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR);
if (IS_ERR(view)) {
rc = tty3270_create_view(tty->index, &tp);
if (rc)
return rc;
} else {
tp = container_of(view, struct tty3270, view);
tty->driver_data = tp;
tp->inattr = TF_INPUT;
}
tty->winsize.ws_row = tp->view.rows - 2;
tty->winsize.ws_col = tp->view.cols;
rc = tty_port_install(&tp->port, driver, tty);
if (rc) {
raw3270_put_view(&tp->view);
return rc;
}
tty->driver_data = tp;
return 0;
}