1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
80 lines
1.8 KiB
C
80 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/tty.h>
|
|
#include <linux/console.h>
|
|
#include <linux/vt_kern.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
|
|
/*
|
|
* Dummy console driver
|
|
*/
|
|
|
|
#if defined(__arm__)
|
|
#define DUMMY_COLUMNS ORIG_VIDEO_COLS
|
|
#define DUMMY_ROWS ORIG_VIDEO_LINES
|
|
#elif defined(__hppa__)
|
|
/* set by Kconfig. Use 80x25 for 640x480 and 160x64 for 1280x1024 */
|
|
#include <linux/config.h>
|
|
#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,
|
|
};
|