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Commit ebc44cf3 authored by Rob Clark's avatar Rob Clark Committed by Dave Airlie
Browse files

drm: add signed-range property type 



Like range, but values are signed.

Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
Reviewed-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
parent 98f75de4

drivers/gpu/drm/drm_crtc.c

+33 −12
Original line number Diff line number Diff line
@@ -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;

include/drm/drm_crtc.h

+12 −0
Original line number Diff line number Diff line
@@ -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);

include/uapi/drm/drm_mode.h

+1 −0
Original line number Diff line number Diff line
@@ -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;