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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [video/] [console/] [dummycon.c] - Blame information for rev 62

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Line No. Rev Author Line
1 62 marcus.erl
/*
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 *  linux/drivers/video/dummycon.c -- A dummy console driver
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 *
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 *  To be used if there's no other console driver (e.g. for plain VGA text)
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 *  available, usually until fbcon takes console over.
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 */
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#include <linux/types.h>
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#include <linux/kdev_t.h>
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#include <linux/console.h>
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#include <linux/vt_kern.h>
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#include <linux/screen_info.h>
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#include <linux/init.h>
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#include <linux/module.h>
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/*
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 *  Dummy console driver
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 */
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#if defined(__arm__)
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#define DUMMY_COLUMNS   screen_info.orig_video_cols
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#define DUMMY_ROWS      screen_info.orig_video_lines
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#elif defined(__hppa__)
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/* set by Kconfig. Use 80x25 for 640x480 and 160x64 for 1280x1024 */
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#define DUMMY_COLUMNS   CONFIG_DUMMY_CONSOLE_COLUMNS
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#define DUMMY_ROWS      CONFIG_DUMMY_CONSOLE_ROWS
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#else
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#define DUMMY_COLUMNS   80
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#define DUMMY_ROWS      25
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#endif
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static const char *dummycon_startup(void)
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{
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    return "dummy device";
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}
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static void dummycon_init(struct vc_data *vc, int init)
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{
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    vc->vc_can_do_color = 1;
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    if (init) {
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        vc->vc_cols = DUMMY_COLUMNS;
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        vc->vc_rows = DUMMY_ROWS;
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    } else
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        vc_resize(vc, DUMMY_COLUMNS, DUMMY_ROWS);
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}
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static int dummycon_dummy(void)
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{
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    return 0;
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}
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#define DUMMY   (void *)dummycon_dummy
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/*
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 *  The console `switch' structure for the dummy console
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 *
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 *  Most of the operations are dummies.
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 */
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const struct consw dummy_con = {
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    .owner =            THIS_MODULE,
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    .con_startup =      dummycon_startup,
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    .con_init =         dummycon_init,
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    .con_deinit =       DUMMY,
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    .con_clear =        DUMMY,
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    .con_putc =         DUMMY,
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    .con_putcs =        DUMMY,
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    .con_cursor =       DUMMY,
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    .con_scroll =       DUMMY,
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    .con_bmove =        DUMMY,
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    .con_switch =       DUMMY,
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    .con_blank =        DUMMY,
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    .con_font_set =     DUMMY,
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    .con_font_get =     DUMMY,
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    .con_font_default = DUMMY,
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    .con_font_copy =    DUMMY,
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    .con_set_palette =  DUMMY,
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    .con_scrolldelta =  DUMMY,
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};

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