From: Kristian Høgsberg <hoegsberg@xxxxxxxxx>
Like mode_equal but w/o the clock checks. Useful for checking if modes
are close enough to re-use to avoid a boot time mode set for example.
Signed-off-by: Kristian Høgsberg <hoegsberg@xxxxxxxxx>
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_modes.c | 8 ++++++++
include/drm/drm_modes.h | 2 ++
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index bedf189..92ae7f3 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -905,6 +905,14 @@ bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
}
EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo);
+bool drm_mode_same_size(const struct drm_display_mode *mode1,
+ const struct drm_display_mode *mode2)
+{
+ return mode1->vdisplay == mode2->vdisplay &&
+ mode1->hdisplay == mode2->hdisplay;
+}
+EXPORT_SYMBOL(drm_mode_same_size);
+
/**
* drm_mode_validate_size - make sure modes adhere to size constraints
* @dev: DRM device
diff --git a/include/drm/drm_modes.h b/include/drm/drm_modes.h
index 91d0582..7272309 100644
--- a/include/drm/drm_modes.h
+++ b/include/drm/drm_modes.h
@@ -215,6 +215,8 @@ bool drm_mode_equal(const struct drm_display_mode *mode1,
const struct drm_display_mode *mode2);
bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1,
const struct drm_display_mode *mode2);
+bool drm_mode_same_size(const struct drm_display_mode *mode1,
+ const struct drm_display_mode *mode2);
/* for use by the crtc helper probe functions */
void drm_mode_validate_size(struct drm_device *dev,
--
1.8.3.2
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