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drm: Add drm_mode_copy() 

Add a helper function to copy a display mode. Use it in
drm_mode_duplicate() and nouveau mode_fixup hooks.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Ville Syrjälä 2012-03-13 12:35:51 +02:00 committed by Dave Airlie
parent d63f5e6bf6
commit c3c50e8b65
4 changed files with 28 additions and 15 deletions
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28
drivers/gpu/drm/drm_modes.c
View File

@ -713,6 +713,27 @@ void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags)
EXPORT_SYMBOL(drm_mode_set_crtcinfo);
/**
* drm_mode_copy - copy the mode
* @dst: mode to overwrite
* @src: mode to copy
*
* LOCKING:
* None.
*
* Copy an existing mode into another mode, preserving the object id
* of the destination mode.
*/
void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src)
{
int id = dst->base.id;
*dst = *src;
dst->base.id = id;
INIT_LIST_HEAD(&dst->head);
}
EXPORT_SYMBOL(drm_mode_copy);
/**
* drm_mode_duplicate - allocate and duplicate an existing mode
* @m: mode to duplicate
@ -727,16 +748,13 @@ struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
const struct drm_display_mode *mode)
{
struct drm_display_mode *nmode;
int new_id;
nmode = drm_mode_create(dev);
if (!nmode)
return NULL;
new_id = nmode->base.id;
*nmode = *mode;
nmode->base.id = new_id;
INIT_LIST_HEAD(&nmode->head);
drm_mode_copy(nmode, mode);
return nmode;
}
EXPORT_SYMBOL(drm_mode_duplicate);

7
drivers/gpu/drm/nouveau/nv50_dac.c
View File

@ -190,11 +190,8 @@ nv50_dac_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
}
if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
connector->native_mode) {
int id = adjusted_mode->base.id;
*adjusted_mode = *connector->native_mode;
adjusted_mode->base.id = id;
}
connector->native_mode)
drm_mode_copy(adjusted_mode, connector->native_mode);
return true;
}

7
drivers/gpu/drm/nouveau/nv50_sor.c
View File

@ -342,11 +342,8 @@ nv50_sor_mode_fixup(struct drm_encoder *encoder, struct drm_display_mode *mode,
}
if (connector->scaling_mode != DRM_MODE_SCALE_NONE &&
connector->native_mode) {
int id = adjusted_mode->base.id;
*adjusted_mode = *connector->native_mode;
adjusted_mode->base.id = id;
}
connector->native_mode)
drm_mode_copy(adjusted_mode, connector->native_mode);
return true;
}

1
include/drm/drm_crtc.h
View File

@ -855,6 +855,7 @@ extern struct edid *drm_get_edid(struct drm_connector *connector,
extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
extern void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode);
extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);
extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
const struct drm_display_mode *mode);
extern void drm_mode_debug_printmodeline(struct drm_display_mode *mode);