diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/s390/char/con3270.c | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 13e2b4cb74fc..9c816d1239eb 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -1557,7 +1557,7 @@ static void tty3270_goto_xy(struct tty3270 *tp, int cx, int cy) */ static void tty3270_escape_sequence(struct tty3270 *tp, char ch) { - enum { ESnormal, ESesc, ESsquare, ESgetpars }; + enum { ESnormal, ESesc, ESsquare, ESparen, ESgetpars }; if (tp->esc_state == ESnormal) { if (ch == 0x1b) @@ -1571,6 +1571,9 @@ static void tty3270_escape_sequence(struct tty3270 *tp, char ch) case '[': tp->esc_state = ESsquare; break; + case '(': + tp->esc_state = ESparen; + break; case 'E': tty3270_cr(tp); tty3270_lf(tp); @@ -1604,15 +1607,28 @@ static void tty3270_escape_sequence(struct tty3270 *tp, char ch) } return; } - if (tp->esc_state == ESsquare) { + + switch (tp->esc_state) { + case ESparen: + tp->esc_state = ESnormal; + switch (ch) { + case 'B': + tp->attributes.alternate_charset = 0; + break; + case '0': + tp->attributes.alternate_charset = 1; + break; + } + return; + case ESsquare: tp->esc_state = ESgetpars; memset(tp->esc_par, 0, sizeof(tp->esc_par)); tp->esc_npar = 0; tp->esc_ques = (ch == '?'); if (tp->esc_ques) return; - } - if (tp->esc_state == ESgetpars) { + fallthrough; + case ESgetpars: if (ch == ';' && tp->esc_npar < ESCAPE_NPAR - 1) { tp->esc_npar++; return; @@ -1622,6 +1638,9 @@ static void tty3270_escape_sequence(struct tty3270 *tp, char ch) tp->esc_par[tp->esc_npar] += ch - '0'; return; } + break; + default: + break; } tp->esc_state = ESnormal; if (ch == 'n' && !tp->esc_ques) { |