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drm: add signed-range property type

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Like range, but values are signed.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
This commit is contained in:
Rob Clark 2012-09-12 22:22:31 -05:00 committed by Dave Airlie
parent 98f75de40e
commit ebc44cf386
3 changed files with 46 additions and 12 deletions
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45
drivers/gpu/drm/drm_crtc.c
View file

@ -3213,6 +3213,22 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
}
EXPORT_SYMBOL(drm_property_create_bitmask);
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;
property = drm_property_create(dev, flags, name, 2);
if (!property)
return NULL;
property->values[0] = min;
property->values[1] = max;
return property;
}
/**
* drm_property_create - create a new ranged property type
* @dev: drm device
@ -3235,21 +3251,20 @@ 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 *property;
flags |= DRM_MODE_PROP_RANGE;
property = drm_property_create(dev, flags, name, 2);
if (!property)
return NULL;
property->values[0] = min;
property->values[1] = max;
return property;
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)
{
@ -3685,6 +3700,12 @@ 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;

12
include/drm/drm_crtc.h
View file

@ -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);
}
enum drm_connector_force {
DRM_FORCE_UNSPECIFIED,
DRM_FORCE_OFF,
@ -982,6 +991,9 @@ 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);

1
include/uapi/drm/drm_mode.h
View file

@ -265,6 +265,7 @@ 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;