From: Gustavo Padovan <gustavo.pado...@collabora.co.uk>

We need to get hdisplay and vdisplay in a few places so create a
helper to make our job easier.

Suggested-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Signed-off-by: Gustavo Padovan <gustavo.pado...@collabora.co.uk>
---
 drivers/gpu/drm/drm_crtc.c           | 20 +++++++++++++-------
 drivers/gpu/drm/i915/intel_display.c |  6 +++---
 include/drm/drm_crtc.h               |  2 ++
 3 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index b702106..7c0bf9f 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2490,6 +2490,17 @@ int drm_mode_set_config_internal(struct drm_mode_set 
*set)
 }
 EXPORT_SYMBOL(drm_mode_set_config_internal);
 
+void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
+                           int *hdisplay, int *vdisplay)
+{
+       struct drm_display_mode adjusted = *mode;
+
+       drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
+       *hdisplay = adjusted.crtc_hdisplay;
+       *vdisplay = adjusted.crtc_vdisplay;
+}
+EXPORT_SYMBOL(drm_crtc_get_hv_timing);
+
 /**
  * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
  *     CRTC viewport
@@ -2510,13 +2521,8 @@ int drm_crtc_check_viewport(const struct drm_crtc *crtc,
        hdisplay = mode->hdisplay;
        vdisplay = mode->vdisplay;
 
-       if (drm_mode_is_stereo(mode)) {
-               struct drm_display_mode adjusted = *mode;
-
-               drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE);
-               hdisplay = adjusted.crtc_hdisplay;
-               vdisplay = adjusted.crtc_vdisplay;
-       }
+       if (drm_mode_is_stereo(mode))
+               drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
 
        if (crtc->invert_dimensions)
                swap(hdisplay, vdisplay);
diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index 3cb092c..dfe9ad5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10154,9 +10154,9 @@ intel_modeset_pipe_config(struct drm_crtc *crtc,
         * computation to clearly distinguish it from the adjusted mode, which
         * can be changed by the connectors in the below retry loop.
         */
-       drm_mode_set_crtcinfo(&pipe_config->requested_mode, CRTC_STEREO_DOUBLE);
-       pipe_config->pipe_src_w = pipe_config->requested_mode.crtc_hdisplay;
-       pipe_config->pipe_src_h = pipe_config->requested_mode.crtc_vdisplay;
+       drm_crtc_get_hv_timing(&pipe_config->requested_mode,
+                              &pipe_config->pipe_src_w,
+                              &pipe_config->pipe_src_h);
 
 encoder_retry:
        /* Ensure the port clock defaults are reset when retrying. */
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c40070a..9b2f6b5 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -950,6 +950,8 @@ extern int drm_plane_init(struct drm_device *dev,
 extern void drm_plane_cleanup(struct drm_plane *plane);
 extern unsigned int drm_plane_index(struct drm_plane *plane);
 extern void drm_plane_force_disable(struct drm_plane *plane);
+extern void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
+                                  int *hdisplay, int *vdisplay);
 extern int drm_crtc_check_viewport(const struct drm_crtc *crtc,
                                   int x, int y,
                                   const struct drm_display_mode *mode,
-- 
1.9.3

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