mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-22 00:40:03 +00:00
![H. Peter Anvin](/assets/img/avatar_default.png)
Stop using magic macros for screen_info structure members. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
|
|
* linux/drivers/video/dummycon.c -- A dummy console driver
|
|
*
|
|
* To be used if there's no other console driver (e.g. for plain VGA text)
|
|
* available, usually until fbcon takes console over.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kdev_t.h>
|
|
#include <linux/console.h>
|
|
#include <linux/vt_kern.h>
|
|
#include <linux/screen_info.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
|
|
/*
|
|
* Dummy console driver
|
|
*/
|
|
|
|
#if defined(__arm__)
|
|
#define DUMMY_COLUMNS screen_info.orig_video_cols
|
|
#define DUMMY_ROWS screen_info.orig_video_lines
|
|
#elif defined(__hppa__)
|
|
/* set by Kconfig. Use 80x25 for 640x480 and 160x64 for 1280x1024 */
|
|
#define DUMMY_COLUMNS CONFIG_DUMMY_CONSOLE_COLUMNS
|
|
#define DUMMY_ROWS CONFIG_DUMMY_CONSOLE_ROWS
|
|
#else
|
|
#define DUMMY_COLUMNS 80
|
|
#define DUMMY_ROWS 25
|
|
#endif
|
|
|
|
static const char *dummycon_startup(void)
|
|
{
|
|
return "dummy device";
|
|
}
|
|
|
|
static void dummycon_init(struct vc_data *vc, int init)
|
|
{
|
|
vc->vc_can_do_color = 1;
|
|
if (init) {
|
|
vc->vc_cols = DUMMY_COLUMNS;
|
|
vc->vc_rows = DUMMY_ROWS;
|
|
} else
|
|
vc_resize(vc, DUMMY_COLUMNS, DUMMY_ROWS);
|
|
}
|
|
|
|
static int dummycon_dummy(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define DUMMY (void *)dummycon_dummy
|
|
|
|
/*
|
|
* The console `switch' structure for the dummy console
|
|
*
|
|
* Most of the operations are dummies.
|
|
*/
|
|
|
|
const struct consw dummy_con = {
|
|
.owner = THIS_MODULE,
|
|
.con_startup = dummycon_startup,
|
|
.con_init = dummycon_init,
|
|
.con_deinit = DUMMY,
|
|
.con_clear = DUMMY,
|
|
.con_putc = DUMMY,
|
|
.con_putcs = DUMMY,
|
|
.con_cursor = DUMMY,
|
|
.con_scroll = DUMMY,
|
|
.con_bmove = DUMMY,
|
|
.con_switch = DUMMY,
|
|
.con_blank = DUMMY,
|
|
.con_font_set = DUMMY,
|
|
.con_font_get = DUMMY,
|
|
.con_font_default = DUMMY,
|
|
.con_font_copy = DUMMY,
|
|
.con_set_palette = DUMMY,
|
|
.con_scrolldelta = DUMMY,
|
|
};
|