Like range, but values are signed.
---
drivers/gpu/drm/drm_crtc.c | 29 +++++++++++++++++++++++++----
include/drm/drm_crtc.h | 12 ++++++++++++
include/uapi/drm/drm_mode.h | 1 +
3 files changed, 38 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 8013204..e438e24 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -3002,14 +3002,12 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
}
EXPORT_SYMBOL(drm_property_create_bitmask);
-struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
- const char *name,
+static struct drm_property *property_create_range(struct drm_device *dev,
+ int flags, const char *name,
uint64_t min, uint64_t max)
{
struct drm_property *property;
- flags |= DRM_MODE_PROP_RANGE;
-
property = drm_property_create(dev, flags, name, 2);
if (!property)
return NULL;
@@ -3019,8 +3017,25 @@ struct drm_property *drm_property_create_range(struct drm_device *dev, int flags
return property;
}
+
+struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
+ const char *name,
+ uint64_t min, uint64_t max)
+{
+ return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
+ name, min, max);
+}
EXPORT_SYMBOL(drm_property_create_range);
+struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
+ int flags, const char *name,
+ int64_t min, int64_t max)
+{
+ return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
+ name, I642U64(min), I642U64(max));
+}
+EXPORT_SYMBOL(drm_property_create_signed_range);
+
struct drm_property *drm_property_create_object(struct drm_device *dev,
int flags, const char *name, uint32_t type)
{
@@ -3362,6 +3377,12 @@ static bool drm_property_change_is_valid(struct drm_property *property,
if (value < property->values[0] || value > property->values[1])
return false;
return true;
+ } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
+ int64_t svalue = U642I64(value);
+ if (svalue < U642I64(property->values[0]) ||
+ svalue > U642I64(property->values[1]))
+ return false;
+ return true;
} else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
int i;
uint64_t valid_mask = 0;
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c05d5ba..17790a0 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -65,6 +65,15 @@ struct drm_object_properties {
uint64_t values[DRM_OBJECT_MAX_PROPERTY];
};
+static inline int64_t U642I64(uint64_t val)
+{
+ return (int64_t)*((int64_t *)&val);
+}
+static inline uint64_t I642U64(int64_t val)
+{
+ return (uint64_t)*((uint64_t *)&val);
+}
+
/*
* Note on terminology: here, for brevity and convenience, we refer to connector
* control chips as 'CRTCs'. They can control any type of connector, VGA, LVDS,
@@ -1123,6 +1132,9 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
const char *name,
uint64_t min, uint64_t max);
+struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
+ int flags, const char *name,
+ int64_t min, int64_t max);
struct drm_property *drm_property_create_object(struct drm_device *dev,
int flags, const char *name, uint32_t type);
extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 516425d..6421edc 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -264,6 +264,7 @@ struct drm_mode_get_connector {
#define DRM_MODE_PROP_EXTENDED_TYPE 0x0000ffc0
#define DRM_MODE_PROP_TYPE(n) ((n) << 6)
#define DRM_MODE_PROP_OBJECT DRM_MODE_PROP_TYPE(1)
+#define DRM_MODE_PROP_SIGNED_RANGE DRM_MODE_PROP_TYPE(2)
struct drm_mode_property_enum {
__u64 value;
--
1.8.4.2
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