[PATCH 2/9] drm: Add support_bits parameter to drm_property_create_bitmask()

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Make drm_property_create_bitmask() a bit more generic by allowing the
caller to specify which bits are in fact supported. This allows multiple
callers to use the same enum list, but still create different versions
of the same property with different list of supported bits.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/drm_crtc.c | 6 +++++-
 include/drm/drm_crtc.h     | 3 ++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index d7a8370..2087fe2 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2883,7 +2883,8 @@ EXPORT_SYMBOL(drm_property_create_enum);
 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
 					 int flags, const char *name,
 					 const struct drm_prop_enum_list *props,
-					 int num_values)
+					 int num_values,
+					 unsigned int supported_bits)
 {
 	struct drm_property *property;
 	int i, ret;
@@ -2895,6 +2896,9 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
 		return NULL;
 
 	for (i = 0; i < num_values; i++) {
+		if (!(supported_bits & (1 << i)))
+			continue;
+
 		ret = drm_property_add_enum(property, i,
 				      props[i].type,
 				      props[i].name);
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 7aec9f4..196b795 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1041,7 +1041,8 @@ extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int
 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
 					 int flags, const char *name,
 					 const struct drm_prop_enum_list *props,
-					 int num_values);
+					 int num_values,
+					 unsigned int supported_bits);
 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
 					 const char *name,
 					 uint64_t min, uint64_t max);
-- 
1.8.1.5