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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/video/console/dummycon.c | |
download | op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz |
Linux-2.6.12-rc2v2.6.12-rc2
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!
Diffstat (limited to 'drivers/video/console/dummycon.c')
-rw-r--r-- | drivers/video/console/dummycon.c | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c new file mode 100644 index 0000000..1ecda91 --- /dev/null +++ b/drivers/video/console/dummycon.c @@ -0,0 +1,80 @@ +/* + * 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, +}; |