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/*
* 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/console_struct.h>
#include <linux/vt_kern.h>
#include <linux/init.h>
/*
* Dummy console driver
*/
#if defined(__arm__)
#define DUMMY_COLUMNS ORIG_VIDEO_COLS
#define DUMMY_ROWS ORIG_VIDEO_LINES
#else
#define DUMMY_COLUMNS 80
#define DUMMY_ROWS 25
#endif
static const char __init *dummycon_startup(void)
{
return "dummy device";
}
static void dummycon_init(struct vc_data *conp, int init)
{
conp->vc_can_do_color = 1;
if (init) {
conp->vc_cols = DUMMY_COLUMNS;
conp->vc_rows = DUMMY_ROWS;
} else
vc_resize_con(DUMMY_ROWS, DUMMY_COLUMNS, conp->vc_num);
}
static int dummycon_dummy(void)
{
return 0;
}
/*
* The console `switch' structure for the dummy console
*
* Most of the operations are dummies.
*/
struct consw dummy_con = {
dummycon_startup, dummycon_init,
(void *)dummycon_dummy, /* con_deinit */
(void *)dummycon_dummy, /* con_clear */
(void *)dummycon_dummy, /* con_putc */
(void *)dummycon_dummy, /* con_putcs */
(void *)dummycon_dummy, /* con_cursor */
(void *)dummycon_dummy, /* con_scroll */
(void *)dummycon_dummy, /* con_bmove */
(void *)dummycon_dummy, /* con_switch */
(void *)dummycon_dummy, /* con_blank */
(void *)dummycon_dummy, /* con_font_op */
(void *)dummycon_dummy, /* con_set_palette */
(void *)dummycon_dummy, /* con_scrolldelta */
NULL, /* con_set_origin */
NULL, /* con_save_screen */
};
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