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drm: Extract drm_mode_object.[hc] 

Just for the struct drm_mode_object base class. The header file was
already partially extracted to help untangle the include loops.

v2:
- Also move the generic get/set property ioctls. At first this seemed
  like a bad idea since it requires making drm_mode_crtc_set_obj_prop
  non-static. But eventually that will get split away too (like
  the connector version already is) for both crtc and planes. Hence I
  reconsidered.

- drm_mode_object.[hc] instead of drm_modeset.[hc], which requires
  renaming the drm_modeset.h header I already started building up.
  This is more consistent (matches the name of the main structure),
  and I want to be able to use drm_modeset.[hc] for the basic modeset
  init/cleanup functionality like drm_mode_config_init.

Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160829082757.17913-3-daniel.vetter@ffwll.ch
This commit is contained in:
Daniel Vetter 2016-08-29 10:27:51 +02:00
parent e03e6de03e
commit 949619f32e
11 changed files with 492 additions and 449 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/gpu/drm-kms.rst
View File

@ -15,6 +15,15 @@ be setup by initializing the following fields.
- struct drm_mode_config_funcs \*funcs;
Mode setting functions.
Modeset Base Object Abstraction
===============================
.. kernel-doc:: include/drm/drm_mode_object.h
:internal:
.. kernel-doc:: drivers/gpu/drm/drm_mode_object.c
:export:
KMS Data Structures
===================

2
drivers/gpu/drm/Makefile
View File

@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
drm_modeset_lock.o drm_atomic.o drm_bridge.o \
drm_framebuffer.o drm_connector.o drm_blend.o \
drm_encoder.o
drm_encoder.o drm_mode_object.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o

413
drivers/gpu/drm/drm_crtc.c
View File

@ -57,162 +57,6 @@ static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
/*
* Optional properties
*/
/*
* Internal function to assign a slot in the object idr and optionally
* register the object into the idr.
*/
int drm_mode_object_get_reg(struct drm_device *dev,
struct drm_mode_object *obj,
uint32_t obj_type,
bool register_obj,
void (*obj_free_cb)(struct kref *kref))
{
int ret;
mutex_lock(&dev->mode_config.idr_mutex);
ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
if (ret >= 0) {
/*
* Set up the object linking under the protection of the idr
* lock so that other users can't see inconsistent state.
*/
obj->id = ret;
obj->type = obj_type;
if (obj_free_cb) {
obj->free_cb = obj_free_cb;
kref_init(&obj->refcount);
}
}
mutex_unlock(&dev->mode_config.idr_mutex);
return ret < 0 ? ret : 0;
}
/**
* drm_mode_object_get - allocate a new modeset identifier
* @dev: DRM device
* @obj: object pointer, used to generate unique ID
* @obj_type: object type
*
* Create a unique identifier based on @ptr in @dev's identifier space. Used
* for tracking modes, CRTCs and connectors. Note that despite the _get postfix
* modeset identifiers are _not_ reference counted. Hence don't use this for
* reference counted modeset objects like framebuffers.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
{
return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
}
void drm_mode_object_register(struct drm_device *dev,
struct drm_mode_object *obj)
{
mutex_lock(&dev->mode_config.idr_mutex);
idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
mutex_unlock(&dev->mode_config.idr_mutex);
}
/**
* drm_mode_object_unregister - free a modeset identifer
* @dev: DRM device
* @object: object to free
*
* Free @id from @dev's unique identifier pool.
* This function can be called multiple times, and guards against
* multiple removals.
* These modeset identifiers are _not_ reference counted. Hence don't use this
* for reference counted modeset objects like framebuffers.
*/
void drm_mode_object_unregister(struct drm_device *dev,
struct drm_mode_object *object)
{
mutex_lock(&dev->mode_config.idr_mutex);
if (object->id) {
idr_remove(&dev->mode_config.crtc_idr, object->id);
object->id = 0;
}
mutex_unlock(&dev->mode_config.idr_mutex);
}
struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
uint32_t id, uint32_t type)
{
struct drm_mode_object *obj = NULL;
mutex_lock(&dev->mode_config.idr_mutex);
obj = idr_find(&dev->mode_config.crtc_idr, id);
if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
obj = NULL;
if (obj && obj->id != id)
obj = NULL;
if (obj && obj->free_cb) {
if (!kref_get_unless_zero(&obj->refcount))
obj = NULL;
}
mutex_unlock(&dev->mode_config.idr_mutex);
return obj;
}
/**
* drm_mode_object_find - look up a drm object with static lifetime
* @dev: drm device
* @id: id of the mode object
* @type: type of the mode object
*
* This function is used to look up a modeset object. It will acquire a
* reference for reference counted objects. This reference must be dropped again
* by callind drm_mode_object_unreference().
*/
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
uint32_t id, uint32_t type)
{
struct drm_mode_object *obj = NULL;
obj = __drm_mode_object_find(dev, id, type);
return obj;
}
EXPORT_SYMBOL(drm_mode_object_find);
/**
* drm_mode_object_unreference - decr the object refcnt
* @obj: mode_object
*
* This functions decrements the object's refcount if it is a refcounted modeset
* object. It is a no-op on any other object. This is used to drop references
* acquired with drm_mode_object_reference().
*/
void drm_mode_object_unreference(struct drm_mode_object *obj)
{
if (obj->free_cb) {
DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
kref_put(&obj->refcount, obj->free_cb);
}
}
EXPORT_SYMBOL(drm_mode_object_unreference);
/**
* drm_mode_object_reference - incr the object refcnt
* @obj: mode_object
*
* This functions increments the object's refcount if it is a refcounted modeset
* object. It is a no-op on any other object. References should be dropped again
* by calling drm_mode_object_unreference().
*/
void drm_mode_object_reference(struct drm_mode_object *obj)
{
if (obj->free_cb) {
DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
kref_get(&obj->refcount);
}
}
EXPORT_SYMBOL(drm_mode_object_reference);
/**
* drm_crtc_force_disable - Forcibly turn off a CRTC
* @crtc: CRTC to turn off
@ -1010,45 +854,6 @@ int drm_mode_getcrtc(struct drm_device *dev,
return 0;
}
/* helper for getconnector and getproperties ioctls */
int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint32_t __user *prop_ptr,
uint64_t __user *prop_values,
uint32_t *arg_count_props)
{
int props_count;
int i, ret, copied;
props_count = obj->properties->count;
if (!atomic)
props_count -= obj->properties->atomic_count;
if ((*arg_count_props >= props_count) && props_count) {
for (i = 0, copied = 0; copied < props_count; i++) {
struct drm_property *prop = obj->properties->properties[i];
uint64_t val;
if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
continue;
ret = drm_object_property_get_value(obj, prop, &val);
if (ret)
return ret;
if (put_user(prop->base.id, prop_ptr + copied))
return -EFAULT;
if (put_user(val, prop_values + copied))
return -EFAULT;
copied++;
}
}
*arg_count_props = props_count;
return 0;
}
/**
* drm_mode_getplane_res - enumerate all plane resources
* @dev: DRM device
@ -2290,105 +2095,6 @@ void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
}
EXPORT_SYMBOL(drm_property_destroy);
/**
* drm_object_attach_property - attach a property to a modeset object
* @obj: drm modeset object
* @property: property to attach
* @init_val: initial value of the property
*
* This attaches the given property to the modeset object with the given initial
* value. Currently this function cannot fail since the properties are stored in
* a statically sized array.
*/
void drm_object_attach_property(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t init_val)
{
int count = obj->properties->count;
if (count == DRM_OBJECT_MAX_PROPERTY) {
WARN(1, "Failed to attach object property (type: 0x%x). Please "
"increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
"you see this message on the same object type.\n",
obj->type);
return;
}
obj->properties->properties[count] = property;
obj->properties->values[count] = init_val;
obj->properties->count++;
if (property->flags & DRM_MODE_PROP_ATOMIC)
obj->properties->atomic_count++;
}
EXPORT_SYMBOL(drm_object_attach_property);
/**
* drm_object_property_set_value - set the value of a property
* @obj: drm mode object to set property value for
* @property: property to set
* @val: value the property should be set to
*
* This functions sets a given property on a given object. This function only
* changes the software state of the property, it does not call into the
* driver's ->set_property callback.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_set_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t val)
{
int i;
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
obj->properties->values[i] = val;
return 0;
}
}
return -EINVAL;
}
EXPORT_SYMBOL(drm_object_property_set_value);
/**
* drm_object_property_get_value - retrieve the value of a property
* @obj: drm mode object to get property value from
* @property: property to retrieve
* @val: storage for the property value
*
* This function retrieves the softare state of the given property for the given
* property. Since there is no driver callback to retrieve the current property
* value this might be out of sync with the hardware, depending upon the driver
* and property.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t *val)
{
int i;
/* read-only properties bypass atomic mechanism and still store
* their value in obj->properties->values[].. mostly to avoid
* having to deal w/ EDID and similar props in atomic paths:
*/
if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
!(property->flags & DRM_MODE_PROP_IMMUTABLE))
return drm_atomic_get_property(obj, property, val);
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
*val = obj->properties->values[i];
return 0;
}
}
return -EINVAL;
}
EXPORT_SYMBOL(drm_object_property_get_value);
/**
* drm_mode_getproperty_ioctl - get the property metadata
* @dev: DRM device
@ -2934,9 +2640,9 @@ void drm_property_change_valid_put(struct drm_property *property,
drm_property_unreference_blob(obj_to_blob(ref));
}
static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value)
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value)
{
int ret = -EINVAL;
struct drm_crtc *crtc = obj_to_crtc(obj);
@ -2978,119 +2684,6 @@ int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
}
EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
/**
* drm_mode_obj_get_properties_ioctl - get the current value of a object's property
* @dev: DRM device
* @data: ioctl data
* @file_priv: DRM file info
*
* This function retrieves the current value for an object's property. Compared
* to the connector specific ioctl this one is extended to also work on crtc and
* plane objects.
*
* Called by the user via ioctl.
*
* Returns:
* Zero on success, negative errno on failure.
*/
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_get_properties *arg = data;
struct drm_mode_object *obj;
int ret = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
drm_modeset_lock_all(dev);
obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
if (!obj) {
ret = -ENOENT;
goto out;
}
if (!obj->properties) {
ret = -EINVAL;
goto out_unref;
}
ret = drm_mode_object_get_properties(obj, file_priv->atomic,
(uint32_t __user *)(unsigned long)(arg->props_ptr),
(uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
&arg->count_props);
out_unref:
drm_mode_object_unreference(obj);
out:
drm_modeset_unlock_all(dev);
return ret;
}
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_set_property *arg = data;
struct drm_mode_object *arg_obj;
struct drm_mode_object *prop_obj;
struct drm_property *property;
int i, ret = -EINVAL;
struct drm_mode_object *ref;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
drm_modeset_lock_all(dev);
arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
if (!arg_obj) {
ret = -ENOENT;
goto out;
}
if (!arg_obj->properties)
goto out_unref;
for (i = 0; i < arg_obj->properties->count; i++)
if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
break;
if (i == arg_obj->properties->count)
goto out_unref;
prop_obj = drm_mode_object_find(dev, arg->prop_id,
DRM_MODE_OBJECT_PROPERTY);
if (!prop_obj) {
ret = -ENOENT;
goto out_unref;
}
property = obj_to_property(prop_obj);
if (!drm_property_change_valid_get(property, arg->value, &ref))
goto out_unref;
switch (arg_obj->type) {
case DRM_MODE_OBJECT_CONNECTOR:
ret = drm_mode_connector_set_obj_prop(arg_obj, property,
arg->value);
break;
case DRM_MODE_OBJECT_CRTC:
ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
break;
case DRM_MODE_OBJECT_PLANE:
ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
property, arg->value);
break;
}
drm_property_change_valid_put(property, ref);
out_unref:
drm_mode_object_unreference(arg_obj);
out:
drm_modeset_unlock_all(dev);
return ret;
}
/**
* drm_mode_crtc_set_gamma_size - set the gamma table size
* @crtc: CRTC to set the gamma table size for

52
drivers/gpu/drm/drm_crtc_internal.h
View File

@ -33,29 +33,14 @@
/* drm_crtc.c */
int drm_mode_object_get_reg(struct drm_device *dev,
struct drm_mode_object *obj,
uint32_t obj_type,
bool register_obj,
void (*obj_free_cb)(struct kref *kref));
void drm_mode_object_register(struct drm_device *dev,
struct drm_mode_object *obj);
int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type);
struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
uint32_t id, uint32_t type);
void drm_mode_object_unregister(struct drm_device *dev,
struct drm_mode_object *object);
int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint32_t __user *prop_ptr,
uint64_t __user *prop_values,
uint32_t *arg_count_props);
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t value);
bool drm_property_change_valid_get(struct drm_property *property,
uint64_t value,
struct drm_mode_object **ref);
void drm_property_change_valid_put(struct drm_property *property,
struct drm_mode_object *ref);
int drm_plane_check_pixel_format(const struct drm_plane *plane,
u32 format);
int drm_crtc_check_viewport(const struct drm_crtc *crtc,
@ -76,11 +61,6 @@ int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
/* IOCTLs */
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int drm_mode_getresources(struct drm_device *dev,
void *data, struct drm_file *file_priv);
int drm_mode_getplane_res(struct drm_device *dev, void *data,
@ -113,6 +93,32 @@ int drm_mode_gamma_set_ioctl(struct drm_device *dev,
int drm_mode_page_flip_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv);
/* drm_mode_object.c */
int drm_mode_object_get_reg(struct drm_device *dev,
struct drm_mode_object *obj,
uint32_t obj_type,
bool register_obj,
void (*obj_free_cb)(struct kref *kref));
void drm_mode_object_register(struct drm_device *dev,
struct drm_mode_object *obj);
int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type);
struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
uint32_t id, uint32_t type);
void drm_mode_object_unregister(struct drm_device *dev,
struct drm_mode_object *object);
int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint32_t __user *prop_ptr,
uint64_t __user *prop_values,
uint32_t *arg_count_props);
/* IOCTL */
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
/* drm_encoder.c */
int drm_encoder_register_all(struct drm_device *dev);
void drm_encoder_unregister_all(struct drm_device *dev);

435
drivers/gpu/drm/drm_mode_object.c Normal file
View File

@ -0,0 +1,435 @@
/*
* Copyright (c) 2016 Intel Corporation
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
#include <linux/export.h>
#include <drm/drmP.h>
#include <drm/drm_mode_object.h>
#include "drm_crtc_internal.h"
/*
* Internal function to assign a slot in the object idr and optionally
* register the object into the idr.
*/
int drm_mode_object_get_reg(struct drm_device *dev,
struct drm_mode_object *obj,
uint32_t obj_type,
bool register_obj,
void (*obj_free_cb)(struct kref *kref))
{
int ret;
mutex_lock(&dev->mode_config.idr_mutex);
ret = idr_alloc(&dev->mode_config.crtc_idr, register_obj ? obj : NULL, 1, 0, GFP_KERNEL);
if (ret >= 0) {
/*
* Set up the object linking under the protection of the idr
* lock so that other users can't see inconsistent state.
*/
obj->id = ret;
obj->type = obj_type;
if (obj_free_cb) {
obj->free_cb = obj_free_cb;
kref_init(&obj->refcount);
}
}
mutex_unlock(&dev->mode_config.idr_mutex);
return ret < 0 ? ret : 0;
}
/**
* drm_mode_object_get - allocate a new modeset identifier
* @dev: DRM device
* @obj: object pointer, used to generate unique ID
* @obj_type: object type
*
* Create a unique identifier based on @ptr in @dev's identifier space. Used
* for tracking modes, CRTCs and connectors. Note that despite the _get postfix
* modeset identifiers are _not_ reference counted. Hence don't use this for
* reference counted modeset objects like framebuffers.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
{
return drm_mode_object_get_reg(dev, obj, obj_type, true, NULL);
}
void drm_mode_object_register(struct drm_device *dev,
struct drm_mode_object *obj)
{
mutex_lock(&dev->mode_config.idr_mutex);
idr_replace(&dev->mode_config.crtc_idr, obj, obj->id);
mutex_unlock(&dev->mode_config.idr_mutex);
}
/**
* drm_mode_object_unregister - free a modeset identifer
* @dev: DRM device
* @object: object to free
*
* Free @id from @dev's unique identifier pool.
* This function can be called multiple times, and guards against
* multiple removals.
* These modeset identifiers are _not_ reference counted. Hence don't use this
* for reference counted modeset objects like framebuffers.
*/
void drm_mode_object_unregister(struct drm_device *dev,
struct drm_mode_object *object)
{
mutex_lock(&dev->mode_config.idr_mutex);
if (object->id) {
idr_remove(&dev->mode_config.crtc_idr, object->id);
object->id = 0;
}
mutex_unlock(&dev->mode_config.idr_mutex);
}
struct drm_mode_object *__drm_mode_object_find(struct drm_device *dev,
uint32_t id, uint32_t type)
{
struct drm_mode_object *obj = NULL;
mutex_lock(&dev->mode_config.idr_mutex);
obj = idr_find(&dev->mode_config.crtc_idr, id);
if (obj && type != DRM_MODE_OBJECT_ANY && obj->type != type)
obj = NULL;
if (obj && obj->id != id)
obj = NULL;
if (obj && obj->free_cb) {
if (!kref_get_unless_zero(&obj->refcount))
obj = NULL;
}
mutex_unlock(&dev->mode_config.idr_mutex);
return obj;
}
/**
* drm_mode_object_find - look up a drm object with static lifetime
* @dev: drm device
* @id: id of the mode object
* @type: type of the mode object
*
* This function is used to look up a modeset object. It will acquire a
* reference for reference counted objects. This reference must be dropped again
* by callind drm_mode_object_unreference().
*/
struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
uint32_t id, uint32_t type)
{
struct drm_mode_object *obj = NULL;
obj = __drm_mode_object_find(dev, id, type);
return obj;
}
EXPORT_SYMBOL(drm_mode_object_find);
/**
* drm_mode_object_unreference - decr the object refcnt
* @obj: mode_object
*
* This functions decrements the object's refcount if it is a refcounted modeset
* object. It is a no-op on any other object. This is used to drop references
* acquired with drm_mode_object_reference().
*/
void drm_mode_object_unreference(struct drm_mode_object *obj)
{
if (obj->free_cb) {
DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
kref_put(&obj->refcount, obj->free_cb);
}
}
EXPORT_SYMBOL(drm_mode_object_unreference);
/**
* drm_mode_object_reference - incr the object refcnt
* @obj: mode_object
*
* This functions increments the object's refcount if it is a refcounted modeset
* object. It is a no-op on any other object. References should be dropped again
* by calling drm_mode_object_unreference().
*/
void drm_mode_object_reference(struct drm_mode_object *obj)
{
if (obj->free_cb) {
DRM_DEBUG("OBJ ID: %d (%d)\n", obj->id, atomic_read(&obj->refcount.refcount));
kref_get(&obj->refcount);
}
}
EXPORT_SYMBOL(drm_mode_object_reference);
/**
* drm_object_attach_property - attach a property to a modeset object
* @obj: drm modeset object
* @property: property to attach
* @init_val: initial value of the property
*
* This attaches the given property to the modeset object with the given initial
* value. Currently this function cannot fail since the properties are stored in
* a statically sized array.
*/
void drm_object_attach_property(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t init_val)
{
int count = obj->properties->count;
if (count == DRM_OBJECT_MAX_PROPERTY) {
WARN(1, "Failed to attach object property (type: 0x%x). Please "
"increase DRM_OBJECT_MAX_PROPERTY by 1 for each time "
"you see this message on the same object type.\n",
obj->type);
return;
}
obj->properties->properties[count] = property;
obj->properties->values[count] = init_val;
obj->properties->count++;
if (property->flags & DRM_MODE_PROP_ATOMIC)
obj->properties->atomic_count++;
}
EXPORT_SYMBOL(drm_object_attach_property);
/**
* drm_object_property_set_value - set the value of a property
* @obj: drm mode object to set property value for
* @property: property to set
* @val: value the property should be set to
*
* This functions sets a given property on a given object. This function only
* changes the software state of the property, it does not call into the
* driver's ->set_property callback.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_set_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t val)
{
int i;
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
obj->properties->values[i] = val;
return 0;
}
}
return -EINVAL;
}
EXPORT_SYMBOL(drm_object_property_set_value);
/**
* drm_object_property_get_value - retrieve the value of a property
* @obj: drm mode object to get property value from
* @property: property to retrieve
* @val: storage for the property value
*
* This function retrieves the softare state of the given property for the given
* property. Since there is no driver callback to retrieve the current property
* value this might be out of sync with the hardware, depending upon the driver
* and property.
*
* Returns:
* Zero on success, error code on failure.
*/
int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property, uint64_t *val)
{
int i;
/* read-only properties bypass atomic mechanism and still store
* their value in obj->properties->values[].. mostly to avoid
* having to deal w/ EDID and similar props in atomic paths:
*/
if (drm_core_check_feature(property->dev, DRIVER_ATOMIC) &&
!(property->flags & DRM_MODE_PROP_IMMUTABLE))
return drm_atomic_get_property(obj, property, val);
for (i = 0; i < obj->properties->count; i++) {
if (obj->properties->properties[i] == property) {
*val = obj->properties->values[i];
return 0;
}
}
return -EINVAL;
}
EXPORT_SYMBOL(drm_object_property_get_value);
/* helper for getconnector and getproperties ioctls */
int drm_mode_object_get_properties(struct drm_mode_object *obj, bool atomic,
uint32_t __user *prop_ptr,
uint64_t __user *prop_values,
uint32_t *arg_count_props)
{
int props_count;
int i, ret, copied;
props_count = obj->properties->count;
if (!atomic)
props_count -= obj->properties->atomic_count;
if ((*arg_count_props >= props_count) && props_count) {
for (i = 0, copied = 0; copied < props_count; i++) {
struct drm_property *prop = obj->properties->properties[i];
uint64_t val;
if ((prop->flags & DRM_MODE_PROP_ATOMIC) && !atomic)
continue;
ret = drm_object_property_get_value(obj, prop, &val);
if (ret)
return ret;
if (put_user(prop->base.id, prop_ptr + copied))
return -EFAULT;
if (put_user(val, prop_values + copied))
return -EFAULT;
copied++;
}
}
*arg_count_props = props_count;
return 0;
}
/**
* drm_mode_obj_get_properties_ioctl - get the current value of a object's property
* @dev: DRM device
* @data: ioctl data
* @file_priv: DRM file info
*
* This function retrieves the current value for an object's property. Compared
* to the connector specific ioctl this one is extended to also work on crtc and
* plane objects.
*
* Called by the user via ioctl.
*
* Returns:
* Zero on success, negative errno on failure.
*/
int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_get_properties *arg = data;
struct drm_mode_object *obj;
int ret = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
drm_modeset_lock_all(dev);
obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
if (!obj) {
ret = -ENOENT;
goto out;
}
if (!obj->properties) {
ret = -EINVAL;
goto out_unref;
}
ret = drm_mode_object_get_properties(obj, file_priv->atomic,
(uint32_t __user *)(unsigned long)(arg->props_ptr),
(uint64_t __user *)(unsigned long)(arg->prop_values_ptr),
&arg->count_props);
out_unref:
drm_mode_object_unreference(obj);
out:
drm_modeset_unlock_all(dev);
return ret;
}
int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_obj_set_property *arg = data;
struct drm_mode_object *arg_obj;
struct drm_mode_object *prop_obj;
struct drm_property *property;
int i, ret = -EINVAL;
struct drm_mode_object *ref;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
drm_modeset_lock_all(dev);
arg_obj = drm_mode_object_find(dev, arg->obj_id, arg->obj_type);
if (!arg_obj) {
ret = -ENOENT;
goto out;
}
if (!arg_obj->properties)
goto out_unref;
for (i = 0; i < arg_obj->properties->count; i++)
if (arg_obj->properties->properties[i]->base.id == arg->prop_id)
break;
if (i == arg_obj->properties->count)
goto out_unref;
prop_obj = drm_mode_object_find(dev, arg->prop_id,
DRM_MODE_OBJECT_PROPERTY);
if (!prop_obj) {
ret = -ENOENT;
goto out_unref;
}
property = obj_to_property(prop_obj);
if (!drm_property_change_valid_get(property, arg->value, &ref))
goto out_unref;
switch (arg_obj->type) {
case DRM_MODE_OBJECT_CONNECTOR:
ret = drm_mode_connector_set_obj_prop(arg_obj, property,
arg->value);
break;
case DRM_MODE_OBJECT_CRTC:
ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
break;
case DRM_MODE_OBJECT_PLANE:
ret = drm_mode_plane_set_obj_prop(obj_to_plane(arg_obj),
property, arg->value);
break;
}
drm_property_change_valid_put(property, ref);
out_unref:
drm_mode_object_unreference(arg_obj);
out:
drm_modeset_unlock_all(dev);
return ret;
}

2
include/drm/drm_connector.h
View File

@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/ctype.h>
#include <drm/drm_modeset.h>
#include <drm/drm_mode_object.h>
struct drm_connector_helper_funcs;
struct drm_device;

12
include/drm/drm_crtc.h
View File

@ -36,7 +36,7 @@
#include <uapi/drm/drm_fourcc.h>
#include <drm/drm_modeset_lock.h>
#include <drm/drm_rect.h>
#include <drm/drm_modeset.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_modes.h>
#include <drm/drm_connector.h>
@ -2116,16 +2116,6 @@ static inline bool drm_property_type_is(struct drm_property *property,
return property->flags & type;
}
extern int drm_object_property_set_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t val);
extern int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *value);
extern void drm_object_attach_property(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t init_val);
extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
const char *name, int num_values);
extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,

2
include/drm/drm_encoder.h
View File

@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/ctype.h>
#include <drm/drm_modeset.h>
#include <drm/drm_mode_object.h>
/**
* struct drm_encoder_funcs - encoder controls

2
include/drm/drm_framebuffer.h
View File

@ -25,7 +25,7 @@
#include <linux/list.h>
#include <linux/ctype.h>
#include <drm/drm_modeset.h>
#include <drm/drm_mode_object.h>
struct drm_framebuffer;
struct drm_file;

10
include/drm/drm_modeset.h → include/drm/drm_mode_object.h
View File

@ -67,4 +67,14 @@ struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
void drm_mode_object_reference(struct drm_mode_object *obj);
void drm_mode_object_unreference(struct drm_mode_object *obj);
int drm_object_property_set_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t val);
int drm_object_property_get_value(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t *value);
void drm_object_attach_property(struct drm_mode_object *obj,
struct drm_property *property,
uint64_t init_val);
#endif

2
include/drm/drm_modes.h
View File

@ -27,7 +27,7 @@
#ifndef __DRM_MODES_H__
#define __DRM_MODES_H__
#include <drm/drm_modeset.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_connector.h>
/*