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drm: Reorganize probed mode validation

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Make drm_mode_validate_size() and drm_mode_validate_flag() deal with a
single mode instead of having each iterate through the mode list.

The hope is that in the future we might be able to share various mode
validation functions between modeset and get_modes.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-12-17 13:56:22 +02:00 committed by Daniel Vetter
parent ef21bf73b9
commit 05acaec334
3 changed files with 32 additions and 37 deletions
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24
drivers/gpu/drm/drm_modes.c
View file

@ -907,8 +907,7 @@ EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo);
/**
* drm_mode_validate_size - make sure modes adhere to size constraints
* @dev: DRM device
* @mode_list: list of modes to check
* @mode: mode to check
* @maxX: maximum width
* @maxY: maximum height
*
@ -916,20 +915,21 @@ EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo);
* limitations of the DRM device/connector. If a mode is too big its status
* member is updated with the appropriate validation failure code. The list
* itself is not changed.
*
* Returns:
* The mode status
*/
void drm_mode_validate_size(struct drm_device *dev,
struct list_head *mode_list,
int maxX, int maxY)
enum drm_mode_status
drm_mode_validate_size(const struct drm_display_mode *mode,
int maxX, int maxY)
{
struct drm_display_mode *mode;
if (maxX > 0 && mode->hdisplay > maxX)
return MODE_VIRTUAL_X;
list_for_each_entry(mode, mode_list, head) {
if (maxX > 0 && mode->hdisplay > maxX)
mode->status = MODE_VIRTUAL_X;
if (maxY > 0 && mode->vdisplay > maxY)
return MODE_VIRTUAL_Y;
if (maxY > 0 && mode->vdisplay > maxY)
mode->status = MODE_VIRTUAL_Y;
}
return MODE_OK;
}
EXPORT_SYMBOL(drm_mode_validate_size);

40
drivers/gpu/drm/drm_probe_helper.c
View file

@ -58,28 +58,23 @@
static bool drm_kms_helper_poll = true;
module_param_named(poll, drm_kms_helper_poll, bool, 0600);
static void drm_mode_validate_flag(struct drm_connector *connector,
int flags)
static enum drm_mode_status
drm_mode_validate_flag(const struct drm_display_mode *mode,
int flags)
{
struct drm_display_mode *mode;
if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
!(flags & DRM_MODE_FLAG_INTERLACE))
return MODE_NO_INTERLACE;
if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE |
DRM_MODE_FLAG_3D_MASK))
return;
if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
!(flags & DRM_MODE_FLAG_DBLSCAN))
return MODE_NO_DBLESCAN;
list_for_each_entry(mode, &connector->modes, head) {
if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
!(flags & DRM_MODE_FLAG_INTERLACE))
mode->status = MODE_NO_INTERLACE;
if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
!(flags & DRM_MODE_FLAG_DBLSCAN))
mode->status = MODE_NO_DBLESCAN;
if ((mode->flags & DRM_MODE_FLAG_3D_MASK) &&
!(flags & DRM_MODE_FLAG_3D_MASK))
mode->status = MODE_NO_STEREO;
}
if ((mode->flags & DRM_MODE_FLAG_3D_MASK) &&
!(flags & DRM_MODE_FLAG_3D_MASK))
return MODE_NO_STEREO;
return;
return MODE_OK;
}
static int drm_helper_probe_add_cmdline_mode(struct drm_connector *connector)
@ -164,18 +159,19 @@ static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect
drm_mode_connector_list_update(connector, merge_type_bits);
if (maxX && maxY)
drm_mode_validate_size(dev, &connector->modes, maxX, maxY);
if (connector->interlace_allowed)
mode_flags |= DRM_MODE_FLAG_INTERLACE;
if (connector->doublescan_allowed)
mode_flags |= DRM_MODE_FLAG_DBLSCAN;
if (connector->stereo_allowed)
mode_flags |= DRM_MODE_FLAG_3D_MASK;
drm_mode_validate_flag(connector, mode_flags);
list_for_each_entry(mode, &connector->modes, head) {
mode->status = drm_mode_validate_size(mode, maxX, maxY);
if (mode->status == MODE_OK)
mode->status = drm_mode_validate_flag(mode, mode_flags);
if (mode->status == MODE_OK && connector_funcs->mode_valid)
mode->status = connector_funcs->mode_valid(connector,
mode);

5
include/drm/drm_modes.h
View file

@ -217,9 +217,8 @@ bool drm_mode_equal_no_clocks_no_stereo(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,
struct list_head *mode_list,
int maxX, int maxY);
enum drm_mode_status drm_mode_validate_size(const struct drm_display_mode *mode,
int maxX, int maxY);
void drm_mode_prune_invalid(struct drm_device *dev,
struct list_head *mode_list, bool verbose);
void drm_mode_sort(struct list_head *mode_list);