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| author | Sven Schnelle <svens@linux.ibm.com> | 2022-11-29 12:31:19 +0300 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2023-01-09 16:34:01 +0300 |
| commit | 18fc2e93b602d8def2b8d10492238aa40180d292 (patch) | |
| tree | 09e1351d278161e1bf0547f46a9985120d8ffaa9 /drivers/s390/char | |
| parent | 76485078702ae680c9683500ad9caafea05678b1 (diff) | |
| download | linux-18fc2e93b602d8def2b8d10492238aa40180d292.tar.xz | |
s390/con3270: reduce f_color and b_color attribute size to 4 bit
As we're only supportign 8 colors, we don't need 8 bits. Reduce the
size to 4 bits to save memory.
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>
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/con3270.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c index 71012c20ec7b..698e0881319a 100644 --- a/drivers/s390/char/con3270.c +++ b/drivers/s390/char/con3270.c @@ -45,8 +45,8 @@ static struct raw3270_fn tty3270_fn; struct tty3270_attribute { unsigned char alternate_charset:1; /* Graphics charset */ unsigned char highlight; /* Blink/reverse/underscore */ - unsigned char f_color; /* Foreground color */ - unsigned char b_color; /* Background color */ + unsigned char f_color:4; /* Foreground color */ + unsigned char b_color:4; /* Background color */ }; struct tty3270_cell { @@ -380,6 +380,18 @@ static char tty3270_graphics_translate(struct tty3270 *tp, char ch) static char *tty3270_add_attributes(struct tty3270 *tp, struct tty3270_line *line, struct tty3270_attribute *attr, char *cp) { + const unsigned char colors[16] = { + [0] = TAC_DEFAULT, + [1] = TAC_RED, + [2] = TAC_GREEN, + [3] = TAC_YELLOW, + [4] = TAC_BLUE, + [5] = TAC_PINK, + [6] = TAC_TURQ, + [7] = TAC_WHITE, + [9] = TAC_DEFAULT + }; + struct tty3270_cell *cell; int c, i; @@ -392,11 +404,11 @@ static char *tty3270_add_attributes(struct tty3270 *tp, struct tty3270_line *lin } if (cell->attributes.f_color != attr->f_color) { attr->f_color = cell->attributes.f_color; - cp = tty3270_add_sa(tp, cp, TAT_FGCOLOR, attr->f_color); + cp = tty3270_add_sa(tp, cp, TAT_FGCOLOR, colors[attr->f_color]); } if (cell->attributes.b_color != attr->b_color) { attr->b_color = cell->attributes.b_color; - cp = tty3270_add_sa(tp, cp, TAT_BGCOLOR, attr->b_color); + cp = tty3270_add_sa(tp, cp, TAT_BGCOLOR, colors[attr->b_color]); } c = cell->character; if (cell->attributes.alternate_charset) @@ -1391,10 +1403,6 @@ static void tty3270_erase_display(struct tty3270 *tp, int mode) */ static void tty3270_set_attributes(struct tty3270 *tp) { - static unsigned char colors[] = { - TAC_DEFAULT, TAC_RED, TAC_GREEN, TAC_YELLOW, TAC_BLUE, - TAC_PINK, TAC_TURQ, TAC_WHITE, 0, TAC_DEFAULT - }; int i, attr; for (i = 0; i <= tp->esc_npar; i++) { @@ -1435,7 +1443,7 @@ static void tty3270_set_attributes(struct tty3270 *tp) case 36: /* Cyan */ case 37: /* White */ case 39: /* Black */ - tp->attributes.f_color = colors[attr - 30]; + tp->attributes.f_color = attr - 30; break; /* Background color. */ case 40: /* Black */ @@ -1447,7 +1455,7 @@ static void tty3270_set_attributes(struct tty3270 *tp) case 46: /* Cyan */ case 47: /* White */ case 49: /* Black */ - tp->attributes.b_color = colors[attr - 40]; + tp->attributes.b_color = attr - 40; break; } } |