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authorZhao Yakui <yakui.zhao@intel.com>2009-06-22 13:17:08 +0800
committerDave Airlie <airlied@linux.ie>2009-07-15 16:29:33 +1000
commitd782c3f95c9263dc0b98e7115f75f1e18b9600b3 (patch)
treee58d950cfa9b9a3a0c52e0f91a08b00cb2be8421 /include/drm/drm_crtc.h
parente9e961c9a818a2f24711af493b907a8e40a69efc (diff)
drm/mode: add the CVT algorithm in kernel space
Add the CVT algorithm in kernel space. And this function can be called to generate the required modeline. I copied it from the file of xserver/hw/xfree86/modes/xf86cvt.c. What I have done is to translate it by using integer calculation. This is to avoid the float-point calculation in kernel space. [airlied:- cleaned up some bits] Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'include/drm/drm_crtc.h')
-rw-r--r--include/drm/drm_crtc.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 7300fb86676..820bc0977e5 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -736,4 +736,7 @@ extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
extern bool drm_detect_hdmi_monitor(struct edid *edid);
+extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
+ int hdisplay, int vdisplay, int vrefresh,
+ bool reduced, bool interlaced);
#endif /* __DRM_CRTC_H__ */