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lib: add igt_restore_vt_mode

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Add a function to restore the previous VT mode after
igt_set_vt_graphics_mode is called.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
This commit is contained in:
Thomas Wood 2014-08-14 13:59:02 +01:00
parent 5c7bcb11be
commit fcb324c2cc
2 changed files with 22 additions and 6 deletions
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27
lib/igt_kms.c
View File

@ -269,17 +269,30 @@ err:
static unsigned long orig_vt_mode = -1UL;
static void restore_vt_mode_at_exit(int sig)
/**
* kmstest_restore_vt_mode:
*
* Restore the VT mode in use before #kmstest_set_vt_graphics_mode was called.
*/
void kmstest_restore_vt_mode(void)
{
if (orig_vt_mode != -1UL)
set_vt_mode(orig_vt_mode);
long ret;
if (orig_vt_mode != -1UL) {
ret = set_vt_mode(orig_vt_mode);
orig_vt_mode = -1UL;
igt_assert(ret >= 0);
igt_debug("VT: original mode restored\n");
}
}
/**
* kmstest_set_vt_graphics_mode:
*
* Sets the controlling VT (if available) into graphics/raw mode and installs an
* igt exit handler to set the VT back to text mode on exit.
* Sets the controlling VT (if available) into graphics/raw mode and installs
* an igt exit handler to set the VT back to text mode on exit. Use
* #kmstest_restore_vt_mode to restore the previous VT mode manually.
*
* All kms tests must call this function to make sure that the fbcon doesn't
* interfere by e.g. blanking the screen.
@ -288,7 +301,7 @@ void kmstest_set_vt_graphics_mode(void)
{
long ret;
igt_install_exit_handler(restore_vt_mode_at_exit);
igt_install_exit_handler((igt_exit_handler_t) kmstest_restore_vt_mode);
igt_disable_exit_handler();
ret = set_vt_mode(KD_GRAPHICS);
@ -296,6 +309,8 @@ void kmstest_set_vt_graphics_mode(void)
igt_assert(ret >= 0);
orig_vt_mode = ret;
igt_debug("VT: graphics mode set\n");
}
static int get_card_number(int fd)

1
lib/igt_kms.h
View File

@ -102,6 +102,7 @@ void kmstest_dump_mode(drmModeModeInfo *mode);
int kmstest_get_pipe_from_crtc_id(int fd, int crtc_id);
void kmstest_set_vt_graphics_mode(void);
void kmstest_restore_vt_mode(void);
struct kmstest_connector_config {
drmModeCrtc *crtc;