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e0c8463a8b
linux/drivers/gpu/drm/drm_crtc.c
Jakob Bornecrantz e0c8463a8b drm: sanitise drm modesetting API + remove unused hotplug 
The initially merged modesetting API has some uglies in it, this
cleans up the struct members and ioctl ordering for initial submission.

It also removes the unneeded hotplug infrastructure.

airlied:- I've pulled this patch in from git modesetting-gem tree.

Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-12-29 17:47:25 +10:00

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/*
* Copyright (c) 2006-2008 Intel Corporation
* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
* Copyright (c) 2008 Red Hat Inc.
*
* DRM core CRTC related functions
*
* 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.
*
* Authors:
* Keith Packard
* Eric Anholt <eric@anholt.net>
* Dave Airlie <airlied@linux.ie>
* Jesse Barnes <jesse.barnes@intel.com>
*/
#include <linux/list.h>
#include "drm.h"
#include "drmP.h"
#include "drm_crtc.h"
struct drm_prop_enum_list {
int type;
char *name;
};
/* Avoid boilerplate. I'm tired of typing. */
#define DRM_ENUM_NAME_FN(fnname, list) \
char *fnname(int val) \
{ \
int i; \
for (i = 0; i < ARRAY_SIZE(list); i++) { \
if (list[i].type == val) \
return list[i].name; \
} \
return "(unknown)"; \
}
/*
* Global properties
*/
static struct drm_prop_enum_list drm_dpms_enum_list[] =
{ { DRM_MODE_DPMS_ON, "On" },
{ DRM_MODE_DPMS_STANDBY, "Standby" },
{ DRM_MODE_DPMS_SUSPEND, "Suspend" },
{ DRM_MODE_DPMS_OFF, "Off" }
};
DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
/*
* Optional properties
*/
static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
{
{ DRM_MODE_SCALE_NON_GPU, "Non-GPU" },
{ DRM_MODE_SCALE_FULLSCREEN, "Fullscreen" },
{ DRM_MODE_SCALE_NO_SCALE, "No scale" },
{ DRM_MODE_SCALE_ASPECT, "Aspect" },
};
static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =
{
{ DRM_MODE_DITHERING_OFF, "Off" },
{ DRM_MODE_DITHERING_ON, "On" },
};
/*
* Non-global properties, but "required" for certain connectors.
*/
static struct drm_prop_enum_list drm_dvi_i_select_enum_list[] =
{
{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
};
DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
static struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] =
{
{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
};
DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
drm_dvi_i_subconnector_enum_list)
static struct drm_prop_enum_list drm_tv_select_enum_list[] =
{
{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
};
DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
static struct drm_prop_enum_list drm_tv_subconnector_enum_list[] =
{
{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I and TV-out */
{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
};
DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
drm_tv_subconnector_enum_list)
struct drm_conn_prop_enum_list {
int type;
char *name;
int count;
};
/*
* Connector and encoder types.
*/
static struct drm_conn_prop_enum_list drm_connector_enum_list[] =
{ { DRM_MODE_CONNECTOR_Unknown, "Unknown", 0 },
{ DRM_MODE_CONNECTOR_VGA, "VGA", 0 },
{ DRM_MODE_CONNECTOR_DVII, "DVI-I", 0 },
{ DRM_MODE_CONNECTOR_DVID, "DVI-D", 0 },
{ DRM_MODE_CONNECTOR_DVIA, "DVI-A", 0 },
{ DRM_MODE_CONNECTOR_Composite, "Composite", 0 },
{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO", 0 },
{ DRM_MODE_CONNECTOR_LVDS, "LVDS", 0 },
{ DRM_MODE_CONNECTOR_Component, "Component", 0 },
{ DRM_MODE_CONNECTOR_9PinDIN, "9-pin DIN", 0 },
{ DRM_MODE_CONNECTOR_DisplayPort, "DisplayPort", 0 },
{ DRM_MODE_CONNECTOR_HDMIA, "HDMI Type A", 0 },
{ DRM_MODE_CONNECTOR_HDMIB, "HDMI Type B", 0 },
};
static struct drm_prop_enum_list drm_encoder_enum_list[] =
{ { DRM_MODE_ENCODER_NONE, "None" },
{ DRM_MODE_ENCODER_DAC, "DAC" },
{ DRM_MODE_ENCODER_TMDS, "TMDS" },
{ DRM_MODE_ENCODER_LVDS, "LVDS" },
{ DRM_MODE_ENCODER_TVDAC, "TV" },
};
char *drm_get_encoder_name(struct drm_encoder *encoder)
{
static char buf[32];
snprintf(buf, 32, "%s-%d",
drm_encoder_enum_list[encoder->encoder_type].name,
encoder->base.id);
return buf;
}
char *drm_get_connector_name(struct drm_connector *connector)
{
static char buf[32];
snprintf(buf, 32, "%s-%d",
drm_connector_enum_list[connector->connector_type].name,
connector->connector_type_id);
return buf;
}
EXPORT_SYMBOL(drm_get_connector_name);
char *drm_get_connector_status_name(enum drm_connector_status status)
{
if (status == connector_status_connected)
return "connected";
else if (status == connector_status_disconnected)
return "disconnected";
else
return "unknown";
}
/**
* drm_mode_object_get - allocate a new identifier
* @dev: DRM device
* @ptr: object pointer, used to generate unique ID
* @type: object type
*
* LOCKING:
* Caller must hold DRM mode_config lock.
*
* Create a unique identifier based on @ptr in @dev's identifier space. Used
* for tracking modes, CRTCs and connectors.
*
* RETURNS:
* New unique (relative to other objects in @dev) integer identifier for the
* object.
*/
static int drm_mode_object_get(struct drm_device *dev,
struct drm_mode_object *obj, uint32_t obj_type)
{
int new_id = 0;
int ret;
WARN(!mutex_is_locked(&dev->mode_config.mutex),
"%s called w/o mode_config lock\n", __FUNCTION__);
again:
if (idr_pre_get(&dev->mode_config.crtc_idr, GFP_KERNEL) == 0) {
DRM_ERROR("Ran out memory getting a mode number\n");
return -EINVAL;
}
ret = idr_get_new_above(&dev->mode_config.crtc_idr, obj, 1, &new_id);
if (ret == -EAGAIN)
goto again;
obj->id = new_id;
obj->type = obj_type;
return 0;
}
/**
* drm_mode_object_put - free an identifer
* @dev: DRM device
* @id: ID to free
*
* LOCKING:
* Caller must hold DRM mode_config lock.
*
* Free @id from @dev's unique identifier pool.
*/
static void drm_mode_object_put(struct drm_device *dev,
struct drm_mode_object *object)
{
idr_remove(&dev->mode_config.crtc_idr, object->id);
}
void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type)
{
struct drm_mode_object *obj;
obj = idr_find(&dev->mode_config.crtc_idr, id);
if (!obj || (obj->type != type) || (obj->id != id))
return NULL;
return obj;
}
EXPORT_SYMBOL(drm_mode_object_find);
/**
* drm_crtc_from_fb - find the CRTC structure associated with an fb
* @dev: DRM device
* @fb: framebuffer in question
*
* LOCKING:
* Caller must hold mode_config lock.
*
* Find CRTC in the mode_config structure that matches @fb.
*
* RETURNS:
* Pointer to the CRTC or NULL if it wasn't found.
*/
struct drm_crtc *drm_crtc_from_fb(struct drm_device *dev,
struct drm_framebuffer *fb)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (crtc->fb == fb)
return crtc;
}
return NULL;
}
/**
* drm_framebuffer_init - initialize a framebuffer
* @dev: DRM device
*
* LOCKING:
* Caller must hold mode config lock.
*
* Allocates an ID for the framebuffer's parent mode object, sets its mode
* functions & device file and adds it to the master fd list.
*
* RETURNS:
* Zero on success, error code on falure.
*/
int drm_framebuffer_init(struct drm_device *dev, struct drm_framebuffer *fb,
const struct drm_framebuffer_funcs *funcs)
{
int ret;
ret = drm_mode_object_get(dev, &fb->base, DRM_MODE_OBJECT_FB);
if (ret) {
return ret;
}
fb->dev = dev;
fb->funcs = funcs;
dev->mode_config.num_fb++;
list_add(&fb->head, &dev->mode_config.fb_list);
return 0;
}
EXPORT_SYMBOL(drm_framebuffer_init);
/**
* drm_framebuffer_cleanup - remove a framebuffer object
* @fb: framebuffer to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Scans all the CRTCs in @dev's mode_config. If they're using @fb, removes
* it, setting it to NULL.
*/
void drm_framebuffer_cleanup(struct drm_framebuffer *fb)
{
struct drm_device *dev = fb->dev;
struct drm_crtc *crtc;
/* remove from any CRTC */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (crtc->fb == fb)
crtc->fb = NULL;
}
drm_mode_object_put(dev, &fb->base);
list_del(&fb->head);
dev->mode_config.num_fb--;
}
EXPORT_SYMBOL(drm_framebuffer_cleanup);
/**
* drm_crtc_init - Initialise a new CRTC object
* @dev: DRM device
* @crtc: CRTC object to init
* @funcs: callbacks for the new CRTC
*
* LOCKING:
* Caller must hold mode config lock.
*
* Inits a new object created as base part of an driver crtc object.
*/
void drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
const struct drm_crtc_funcs *funcs)
{
crtc->dev = dev;
crtc->funcs = funcs;
mutex_lock(&dev->mode_config.mutex);
drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
list_add_tail(&crtc->head, &dev->mode_config.crtc_list);
dev->mode_config.num_crtc++;
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_crtc_init);
/**
* drm_crtc_cleanup - Cleans up the core crtc usage.
* @crtc: CRTC to cleanup
*
* LOCKING:
* Caller must hold mode config lock.
*
* Cleanup @crtc. Removes from drm modesetting space
* does NOT free object, caller does that.
*/
void drm_crtc_cleanup(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
if (crtc->gamma_store) {
kfree(crtc->gamma_store);
crtc->gamma_store = NULL;
}
drm_mode_object_put(dev, &crtc->base);
list_del(&crtc->head);
dev->mode_config.num_crtc--;
}
EXPORT_SYMBOL(drm_crtc_cleanup);
/**
* drm_mode_probed_add - add a mode to a connector's probed mode list
* @connector: connector the new mode
* @mode: mode data
*
* LOCKING:
* Caller must hold mode config lock.
*
* Add @mode to @connector's mode list for later use.
*/
void drm_mode_probed_add(struct drm_connector *connector,
struct drm_display_mode *mode)
{
list_add(&mode->head, &connector->probed_modes);
}
EXPORT_SYMBOL(drm_mode_probed_add);
/**
* drm_mode_remove - remove and free a mode
* @connector: connector list to modify
* @mode: mode to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Remove @mode from @connector's mode list, then free it.
*/
void drm_mode_remove(struct drm_connector *connector,
struct drm_display_mode *mode)
{
list_del(&mode->head);
kfree(mode);
}
EXPORT_SYMBOL(drm_mode_remove);
/**
* drm_connector_init - Init a preallocated connector
* @dev: DRM device
* @connector: the connector to init
* @funcs: callbacks for this connector
* @name: user visible name of the connector
*
* LOCKING:
* Caller must hold @dev's mode_config lock.
*
* Initialises a preallocated connector. Connectors should be
* subclassed as part of driver connector objects.
*/
void drm_connector_init(struct drm_device *dev,
struct drm_connector *connector,
const struct drm_connector_funcs *funcs,
int connector_type)
{
mutex_lock(&dev->mode_config.mutex);
connector->dev = dev;
connector->funcs = funcs;
drm_mode_object_get(dev, &connector->base, DRM_MODE_OBJECT_CONNECTOR);
connector->connector_type = connector_type;
connector->connector_type_id =
++drm_connector_enum_list[connector_type].count; /* TODO */
INIT_LIST_HEAD(&connector->user_modes);
INIT_LIST_HEAD(&connector->probed_modes);
INIT_LIST_HEAD(&connector->modes);
connector->edid_blob_ptr = NULL;
list_add_tail(&connector->head, &dev->mode_config.connector_list);
dev->mode_config.num_connector++;
drm_connector_attach_property(connector,
dev->mode_config.edid_property, 0);
drm_connector_attach_property(connector,
dev->mode_config.dpms_property, 0);
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_connector_init);
/**
* drm_connector_cleanup - cleans up an initialised connector
* @connector: connector to cleanup
*
* LOCKING:
* Caller must hold @dev's mode_config lock.
*
* Cleans up the connector but doesn't free the object.
*/
void drm_connector_cleanup(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_display_mode *mode, *t;
list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
drm_mode_remove(connector, mode);
list_for_each_entry_safe(mode, t, &connector->modes, head)
drm_mode_remove(connector, mode);
list_for_each_entry_safe(mode, t, &connector->user_modes, head)
drm_mode_remove(connector, mode);
mutex_lock(&dev->mode_config.mutex);
drm_mode_object_put(dev, &connector->base);
list_del(&connector->head);
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_connector_cleanup);
void drm_encoder_init(struct drm_device *dev,
struct drm_encoder *encoder,
const struct drm_encoder_funcs *funcs,
int encoder_type)
{
mutex_lock(&dev->mode_config.mutex);
encoder->dev = dev;
drm_mode_object_get(dev, &encoder->base, DRM_MODE_OBJECT_ENCODER);
encoder->encoder_type = encoder_type;
encoder->funcs = funcs;
list_add_tail(&encoder->head, &dev->mode_config.encoder_list);
dev->mode_config.num_encoder++;
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_encoder_init);
void drm_encoder_cleanup(struct drm_encoder *encoder)
{
struct drm_device *dev = encoder->dev;
mutex_lock(&dev->mode_config.mutex);
drm_mode_object_put(dev, &encoder->base);
list_del(&encoder->head);
mutex_unlock(&dev->mode_config.mutex);
}
EXPORT_SYMBOL(drm_encoder_cleanup);
/**
* drm_mode_create - create a new display mode
* @dev: DRM device
*
* LOCKING:
* Caller must hold DRM mode_config lock.
*
* Create a new drm_display_mode, give it an ID, and return it.
*
* RETURNS:
* Pointer to new mode on success, NULL on error.
*/
struct drm_display_mode *drm_mode_create(struct drm_device *dev)
{
struct drm_display_mode *nmode;
nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL);
if (!nmode)
return NULL;
drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE);
return nmode;
}
EXPORT_SYMBOL(drm_mode_create);
/**
* drm_mode_destroy - remove a mode
* @dev: DRM device
* @mode: mode to remove
*
* LOCKING:
* Caller must hold mode config lock.
*
* Free @mode's unique identifier, then free it.
*/
void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode)
{
drm_mode_object_put(dev, &mode->base);
kfree(mode);
}
EXPORT_SYMBOL(drm_mode_destroy);
static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
{
struct drm_property *edid;
struct drm_property *dpms;
int i;
/*
* Standard properties (apply to all connectors)
*/
edid = drm_property_create(dev, DRM_MODE_PROP_BLOB |
DRM_MODE_PROP_IMMUTABLE,
"EDID", 0);
dev->mode_config.edid_property = edid;
dpms = drm_property_create(dev, DRM_MODE_PROP_ENUM,
"DPMS", ARRAY_SIZE(drm_dpms_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_dpms_enum_list); i++)
drm_property_add_enum(dpms, i, drm_dpms_enum_list[i].type,
drm_dpms_enum_list[i].name);
dev->mode_config.dpms_property = dpms;
return 0;
}
/**
* drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
* @dev: DRM device
*
* Called by a driver the first time a DVI-I connector is made.
*/
int drm_mode_create_dvi_i_properties(struct drm_device *dev)
{
struct drm_property *dvi_i_selector;
struct drm_property *dvi_i_subconnector;
int i;
if (dev->mode_config.dvi_i_select_subconnector_property)
return 0;
dvi_i_selector =
drm_property_create(dev, DRM_MODE_PROP_ENUM,
"select subconnector",
ARRAY_SIZE(drm_dvi_i_select_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_dvi_i_select_enum_list); i++)
drm_property_add_enum(dvi_i_selector, i,
drm_dvi_i_select_enum_list[i].type,
drm_dvi_i_select_enum_list[i].name);
dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
dvi_i_subconnector =
drm_property_create(dev, DRM_MODE_PROP_ENUM |
DRM_MODE_PROP_IMMUTABLE,
"subconnector",
ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_dvi_i_subconnector_enum_list); i++)
drm_property_add_enum(dvi_i_subconnector, i,
drm_dvi_i_subconnector_enum_list[i].type,
drm_dvi_i_subconnector_enum_list[i].name);
dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
return 0;
}
EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
/**
* drm_create_tv_properties - create TV specific connector properties
* @dev: DRM device
* @num_modes: number of different TV formats (modes) supported
* @modes: array of pointers to strings containing name of each format
*
* Called by a driver's TV initialization routine, this function creates
* the TV specific connector properties for a given device. Caller is
* responsible for allocating a list of format names and passing them to
* this routine.
*/
int drm_mode_create_tv_properties(struct drm_device *dev, int num_modes,
char *modes[])
{
struct drm_property *tv_selector;
struct drm_property *tv_subconnector;
int i;
if (dev->mode_config.tv_select_subconnector_property)
return 0;
/*
* Basic connector properties
*/
tv_selector = drm_property_create(dev, DRM_MODE_PROP_ENUM,
"select subconnector",
ARRAY_SIZE(drm_tv_select_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_tv_select_enum_list); i++)
drm_property_add_enum(tv_selector, i,
drm_tv_select_enum_list[i].type,
drm_tv_select_enum_list[i].name);
dev->mode_config.tv_select_subconnector_property = tv_selector;
tv_subconnector =
drm_property_create(dev, DRM_MODE_PROP_ENUM |
DRM_MODE_PROP_IMMUTABLE, "subconnector",
ARRAY_SIZE(drm_tv_subconnector_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_tv_subconnector_enum_list); i++)
drm_property_add_enum(tv_subconnector, i,
drm_tv_subconnector_enum_list[i].type,
drm_tv_subconnector_enum_list[i].name);
dev->mode_config.tv_subconnector_property = tv_subconnector;
/*
* Other, TV specific properties: margins & TV modes.
*/
dev->mode_config.tv_left_margin_property =
drm_property_create(dev, DRM_MODE_PROP_RANGE,
"left margin", 2);
dev->mode_config.tv_left_margin_property->values[0] = 0;
dev->mode_config.tv_left_margin_property->values[1] = 100;
dev->mode_config.tv_right_margin_property =
drm_property_create(dev, DRM_MODE_PROP_RANGE,
"right margin", 2);
dev->mode_config.tv_right_margin_property->values[0] = 0;
dev->mode_config.tv_right_margin_property->values[1] = 100;
dev->mode_config.tv_top_margin_property =
drm_property_create(dev, DRM_MODE_PROP_RANGE,
"top margin", 2);
dev->mode_config.tv_top_margin_property->values[0] = 0;
dev->mode_config.tv_top_margin_property->values[1] = 100;
dev->mode_config.tv_bottom_margin_property =
drm_property_create(dev, DRM_MODE_PROP_RANGE,
"bottom margin", 2);
dev->mode_config.tv_bottom_margin_property->values[0] = 0;
dev->mode_config.tv_bottom_margin_property->values[1] = 100;
dev->mode_config.tv_mode_property =
drm_property_create(dev, DRM_MODE_PROP_ENUM,
"mode", num_modes);
for (i = 0; i < num_modes; i++)
drm_property_add_enum(dev->mode_config.tv_mode_property, i,
i, modes[i]);
return 0;
}
EXPORT_SYMBOL(drm_mode_create_tv_properties);
/**
* drm_mode_create_scaling_mode_property - create scaling mode property
* @dev: DRM device
*
* Called by a driver the first time it's needed, must be attached to desired
* connectors.
*/
int drm_mode_create_scaling_mode_property(struct drm_device *dev)
{
struct drm_property *scaling_mode;
int i;
if (dev->mode_config.scaling_mode_property)
return 0;
scaling_mode =
drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
ARRAY_SIZE(drm_scaling_mode_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++)
drm_property_add_enum(scaling_mode, i,
drm_scaling_mode_enum_list[i].type,
drm_scaling_mode_enum_list[i].name);
dev->mode_config.scaling_mode_property = scaling_mode;
return 0;
}
EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
/**
* drm_mode_create_dithering_property - create dithering property
* @dev: DRM device
*
* Called by a driver the first time it's needed, must be attached to desired
* connectors.
*/
int drm_mode_create_dithering_property(struct drm_device *dev)
{
struct drm_property *dithering_mode;
int i;
if (dev->mode_config.dithering_mode_property)
return 0;
dithering_mode =
drm_property_create(dev, DRM_MODE_PROP_ENUM, "dithering",
ARRAY_SIZE(drm_dithering_mode_enum_list));
for (i = 0; i < ARRAY_SIZE(drm_dithering_mode_enum_list); i++)
drm_property_add_enum(dithering_mode, i,
drm_dithering_mode_enum_list[i].type,
drm_dithering_mode_enum_list[i].name);
dev->mode_config.dithering_mode_property = dithering_mode;
return 0;
}
EXPORT_SYMBOL(drm_mode_create_dithering_property);
/**
* drm_mode_config_init - initialize DRM mode_configuration structure
* @dev: DRM device
*
* LOCKING:
* None, should happen single threaded at init time.
*
* Initialize @dev's mode_config structure, used for tracking the graphics
* configuration of @dev.
*/
void drm_mode_config_init(struct drm_device *dev)
{
mutex_init(&dev->mode_config.mutex);
INIT_LIST_HEAD(&dev->mode_config.fb_list);
INIT_LIST_HEAD(&dev->mode_config.fb_kernel_list);
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
INIT_LIST_HEAD(&dev->mode_config.connector_list);
INIT_LIST_HEAD(&dev->mode_config.encoder_list);
INIT_LIST_HEAD(&dev->mode_config.property_list);
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
idr_init(&dev->mode_config.crtc_idr);
mutex_lock(&dev->mode_config.mutex);
drm_mode_create_standard_connector_properties(dev);
mutex_unlock(&dev->mode_config.mutex);
/* Just to be sure */
dev->mode_config.num_fb = 0;
dev->mode_config.num_connector = 0;
dev->mode_config.num_crtc = 0;
dev->mode_config.num_encoder = 0;
}
EXPORT_SYMBOL(drm_mode_config_init);
int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
{
uint32_t total_objects = 0;
total_objects += dev->mode_config.num_crtc;
total_objects += dev->mode_config.num_connector;
total_objects += dev->mode_config.num_encoder;
if (total_objects == 0)
return -EINVAL;
group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
if (!group->id_list)
return -ENOMEM;
group->num_crtcs = 0;
group->num_connectors = 0;
group->num_encoders = 0;
return 0;
}
int drm_mode_group_init_legacy_group(struct drm_device *dev,
struct drm_mode_group *group)
{
struct drm_crtc *crtc;
struct drm_encoder *encoder;
struct drm_connector *connector;
int ret;
if ((ret = drm_mode_group_init(dev, group)))
return ret;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
group->id_list[group->num_crtcs++] = crtc->base.id;
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
group->id_list[group->num_crtcs + group->num_encoders++] =
encoder->base.id;
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
group->id_list[group->num_crtcs + group->num_encoders +
group->num_connectors++] = connector->base.id;
return 0;
}
/**
* drm_mode_config_cleanup - free up DRM mode_config info
* @dev: DRM device
*
* LOCKING:
* Caller must hold mode config lock.
*
* Free up all the connectors and CRTCs associated with this DRM device, then
* free up the framebuffers and associated buffer objects.
*
* FIXME: cleanup any dangling user buffer objects too
*/
void drm_mode_config_cleanup(struct drm_device *dev)
{
struct drm_connector *connector, *ot;
struct drm_crtc *crtc, *ct;
struct drm_encoder *encoder, *enct;
struct drm_framebuffer *fb, *fbt;
struct drm_property *property, *pt;
list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
head) {
encoder->funcs->destroy(encoder);
}
list_for_each_entry_safe(connector, ot,
&dev->mode_config.connector_list, head) {
connector->funcs->destroy(connector);
}
list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
head) {
drm_property_destroy(dev, property);
}
list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
fb->funcs->destroy(fb);
}
list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
crtc->funcs->destroy(crtc);
}
}
EXPORT_SYMBOL(drm_mode_config_cleanup);
/**
* drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo
* @out: drm_mode_modeinfo struct to return to the user
* @in: drm_display_mode to use
*
* LOCKING:
* None.
*
* Convert a drm_display_mode into a drm_mode_modeinfo structure to return to
* the user.
*/
void drm_crtc_convert_to_umode(struct drm_mode_modeinfo *out,
struct drm_display_mode *in)
{
out->clock = in->clock;
out->hdisplay = in->hdisplay;
out->hsync_start = in->hsync_start;
out->hsync_end = in->hsync_end;
out->htotal = in->htotal;
out->hskew = in->hskew;
out->vdisplay = in->vdisplay;
out->vsync_start = in->vsync_start;
out->vsync_end = in->vsync_end;
out->vtotal = in->vtotal;
out->vscan = in->vscan;
out->vrefresh = in->vrefresh;
out->flags = in->flags;
out->type = in->type;
strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
}
/**
* drm_crtc_convert_to_umode - convert a modeinfo into a drm_display_mode
* @out: drm_display_mode to return to the user
* @in: drm_mode_modeinfo to use
*
* LOCKING:
* None.
*
* Convert a drm_mode_modeinfo into a drm_display_mode structure to return to
* the caller.
*/
void drm_crtc_convert_umode(struct drm_display_mode *out,
struct drm_mode_modeinfo *in)
{
out->clock = in->clock;
out->hdisplay = in->hdisplay;
out->hsync_start = in->hsync_start;
out->hsync_end = in->hsync_end;
out->htotal = in->htotal;
out->hskew = in->hskew;
out->vdisplay = in->vdisplay;
out->vsync_start = in->vsync_start;
out->vsync_end = in->vsync_end;
out->vtotal = in->vtotal;
out->vscan = in->vscan;
out->vrefresh = in->vrefresh;
out->flags = in->flags;
out->type = in->type;
strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN);
out->name[DRM_DISPLAY_MODE_LEN-1] = 0;
}
/**
* drm_mode_getresources - get graphics configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Construct a set of configuration description structures and return
* them to the user, including CRTC, connector and framebuffer configuration.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getresources(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_card_res *card_res = data;
struct list_head *lh;
struct drm_framebuffer *fb;
struct drm_connector *connector;
struct drm_crtc *crtc;
struct drm_encoder *encoder;
int ret = 0;
int connector_count = 0;
int crtc_count = 0;
int fb_count = 0;
int encoder_count = 0;
int copied = 0, i;
uint32_t __user *fb_id;
uint32_t __user *crtc_id;
uint32_t __user *connector_id;
uint32_t __user *encoder_id;
struct drm_mode_group *mode_group;
mutex_lock(&dev->mode_config.mutex);
/*
* For the non-control nodes we need to limit the list of resources
* by IDs in the group list for this node
*/
list_for_each(lh, &file_priv->fbs)
fb_count++;
mode_group = &file_priv->master->minor->mode_group;
if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
list_for_each(lh, &dev->mode_config.crtc_list)
crtc_count++;
list_for_each(lh, &dev->mode_config.connector_list)
connector_count++;
list_for_each(lh, &dev->mode_config.encoder_list)
encoder_count++;
} else {
crtc_count = mode_group->num_crtcs;
connector_count = mode_group->num_connectors;
encoder_count = mode_group->num_encoders;
}
card_res->max_height = dev->mode_config.max_height;
card_res->min_height = dev->mode_config.min_height;
card_res->max_width = dev->mode_config.max_width;
card_res->min_width = dev->mode_config.min_width;
/* handle this in 4 parts */
/* FBs */
if (card_res->count_fbs >= fb_count) {
copied = 0;
fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
list_for_each_entry(fb, &file_priv->fbs, head) {
if (put_user(fb->base.id, fb_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
card_res->count_fbs = fb_count;
/* CRTCs */
if (card_res->count_crtcs >= crtc_count) {
copied = 0;
crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
list_for_each_entry(crtc, &dev->mode_config.crtc_list,
head) {
DRM_DEBUG("CRTC ID is %d\n", crtc->base.id);
if (put_user(crtc->base.id, crtc_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
} else {
for (i = 0; i < mode_group->num_crtcs; i++) {
if (put_user(mode_group->id_list[i],
crtc_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
}
card_res->count_crtcs = crtc_count;
/* Encoders */
if (card_res->count_encoders >= encoder_count) {
copied = 0;
encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
list_for_each_entry(encoder,
&dev->mode_config.encoder_list,
head) {
DRM_DEBUG("ENCODER ID is %d\n",
encoder->base.id);
if (put_user(encoder->base.id, encoder_id +
copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
} else {
for (i = mode_group->num_crtcs; i < mode_group->num_crtcs + mode_group->num_encoders; i++) {
if (put_user(mode_group->id_list[i],
encoder_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
}
card_res->count_encoders = encoder_count;
/* Connectors */
if (card_res->count_connectors >= connector_count) {
copied = 0;
connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
if (file_priv->master->minor->type == DRM_MINOR_CONTROL) {
list_for_each_entry(connector,
&dev->mode_config.connector_list,
head) {
DRM_DEBUG("CONNECTOR ID is %d\n",
connector->base.id);
if (put_user(connector->base.id,
connector_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
} else {
int start = mode_group->num_crtcs +
mode_group->num_encoders;
for (i = start; i < start + mode_group->num_connectors; i++) {
if (put_user(mode_group->id_list[i],
connector_id + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
}
card_res->count_connectors = connector_count;
DRM_DEBUG("Counted %d %d %d\n", card_res->count_crtcs,
card_res->count_connectors, card_res->count_encoders);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_getcrtc - get CRTC configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Construct a CRTC configuration structure to return to the user.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getcrtc(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc *crtc_resp = data;
struct drm_crtc *crtc;
struct drm_mode_object *obj;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, crtc_resp->crtc_id,
DRM_MODE_OBJECT_CRTC);
if (!obj) {
ret = -EINVAL;
goto out;
}
crtc = obj_to_crtc(obj);
crtc_resp->x = crtc->x;
crtc_resp->y = crtc->y;
crtc_resp->gamma_size = crtc->gamma_size;
if (crtc->fb)
crtc_resp->fb_id = crtc->fb->base.id;
else
crtc_resp->fb_id = 0;
if (crtc->enabled) {
drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
crtc_resp->mode_valid = 1;
} else {
crtc_resp->mode_valid = 0;
}
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_getconnector - get connector configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Construct a connector configuration structure to return to the user.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getconnector(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_get_connector *out_resp = data;
struct drm_mode_object *obj;
struct drm_connector *connector;
struct drm_display_mode *mode;
int mode_count = 0;
int props_count = 0;
int encoders_count = 0;
int ret = 0;
int copied = 0;
int i;
struct drm_mode_modeinfo u_mode;
struct drm_mode_modeinfo __user *mode_ptr;
uint32_t __user *prop_ptr;
uint64_t __user *prop_values;
uint32_t __user *encoder_ptr;
memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
DRM_DEBUG("connector id %d:\n", out_resp->connector_id);
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, out_resp->connector_id,
DRM_MODE_OBJECT_CONNECTOR);
if (!obj) {
ret = -EINVAL;
goto out;
}
connector = obj_to_connector(obj);
for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
if (connector->property_ids[i] != 0) {
props_count++;
}
}
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] != 0) {
encoders_count++;
}
}
if (out_resp->count_modes == 0) {
connector->funcs->fill_modes(connector,
dev->mode_config.max_width,
dev->mode_config.max_height);
}
/* delayed so we get modes regardless of pre-fill_modes state */
list_for_each_entry(mode, &connector->modes, head)
mode_count++;
out_resp->connector_id = connector->base.id;
out_resp->connector_type = connector->connector_type;
out_resp->connector_type_id = connector->connector_type_id;
out_resp->mm_width = connector->display_info.width_mm;
out_resp->mm_height = connector->display_info.height_mm;
out_resp->subpixel = connector->display_info.subpixel_order;
out_resp->connection = connector->status;
if (connector->encoder)
out_resp->encoder_id = connector->encoder->base.id;
else
out_resp->encoder_id = 0;
/*
* This ioctl is called twice, once to determine how much space is
* needed, and the 2nd time to fill it.
*/
if ((out_resp->count_modes >= mode_count) && mode_count) {
copied = 0;
mode_ptr = (struct drm_mode_modeinfo *)(unsigned long)out_resp->modes_ptr;
list_for_each_entry(mode, &connector->modes, head) {
drm_crtc_convert_to_umode(&u_mode, mode);
if (copy_to_user(mode_ptr + copied,
&u_mode, sizeof(u_mode))) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
out_resp->count_modes = mode_count;
if ((out_resp->count_props >= props_count) && props_count) {
copied = 0;
prop_ptr = (uint32_t *)(unsigned long)(out_resp->props_ptr);
prop_values = (uint64_t *)(unsigned long)(out_resp->prop_values_ptr);
for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
if (connector->property_ids[i] != 0) {
if (put_user(connector->property_ids[i],
prop_ptr + copied)) {
ret = -EFAULT;
goto out;
}
if (put_user(connector->property_values[i],
prop_values + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
}
out_resp->count_props = props_count;
if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
copied = 0;
encoder_ptr = (uint32_t *)(unsigned long)(out_resp->encoders_ptr);
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] != 0) {
if (put_user(connector->encoder_ids[i],
encoder_ptr + copied)) {
ret = -EFAULT;
goto out;
}
copied++;
}
}
}
out_resp->count_encoders = encoders_count;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_getencoder(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_get_encoder *enc_resp = data;
struct drm_mode_object *obj;
struct drm_encoder *encoder;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, enc_resp->encoder_id,
DRM_MODE_OBJECT_ENCODER);
if (!obj) {
ret = -EINVAL;
goto out;
}
encoder = obj_to_encoder(obj);
if (encoder->crtc)
enc_resp->crtc_id = encoder->crtc->base.id;
else
enc_resp->crtc_id = 0;
enc_resp->encoder_type = encoder->encoder_type;
enc_resp->encoder_id = encoder->base.id;
enc_resp->possible_crtcs = encoder->possible_crtcs;
enc_resp->possible_clones = encoder->possible_clones;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_setcrtc - set CRTC configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Build a new CRTC configuration based on user request.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_setcrtc(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_mode_config *config = &dev->mode_config;
struct drm_mode_crtc *crtc_req = data;
struct drm_mode_object *obj;
struct drm_crtc *crtc, *crtcfb;
struct drm_connector **connector_set = NULL, *connector;
struct drm_framebuffer *fb = NULL;
struct drm_display_mode *mode = NULL;
struct drm_mode_set set;
uint32_t __user *set_connectors_ptr;
int ret = 0;
int i;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, crtc_req->crtc_id,
DRM_MODE_OBJECT_CRTC);
if (!obj) {
DRM_DEBUG("Unknown CRTC ID %d\n", crtc_req->crtc_id);
ret = -EINVAL;
goto out;
}
crtc = obj_to_crtc(obj);
if (crtc_req->mode_valid) {
/* If we have a mode we need a framebuffer. */
/* If we pass -1, set the mode with the currently bound fb */
if (crtc_req->fb_id == -1) {
list_for_each_entry(crtcfb,
&dev->mode_config.crtc_list, head) {
if (crtcfb == crtc) {
DRM_DEBUG("Using current fb for setmode\n");
fb = crtc->fb;
}
}
} else {
obj = drm_mode_object_find(dev, crtc_req->fb_id,
DRM_MODE_OBJECT_FB);
if (!obj) {
DRM_DEBUG("Unknown FB ID%d\n", crtc_req->fb_id);
ret = -EINVAL;
goto out;
}
fb = obj_to_fb(obj);
}
mode = drm_mode_create(dev);
drm_crtc_convert_umode(mode, &crtc_req->mode);
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
}
if (crtc_req->count_connectors == 0 && mode) {
DRM_DEBUG("Count connectors is 0 but mode set\n");
ret = -EINVAL;
goto out;
}
if (crtc_req->count_connectors > 0 && !mode && !fb) {
DRM_DEBUG("Count connectors is %d but no mode or fb set\n",
crtc_req->count_connectors);
ret = -EINVAL;
goto out;
}
if (crtc_req->count_connectors > 0) {
u32 out_id;
/* Avoid unbounded kernel memory allocation */
if (crtc_req->count_connectors > config->num_connector) {
ret = -EINVAL;
goto out;
}
connector_set = kmalloc(crtc_req->count_connectors *
sizeof(struct drm_connector *),
GFP_KERNEL);
if (!connector_set) {
ret = -ENOMEM;
goto out;
}
for (i = 0; i < crtc_req->count_connectors; i++) {
set_connectors_ptr = (uint32_t *)(unsigned long)crtc_req->set_connectors_ptr;
if (get_user(out_id, &set_connectors_ptr[i])) {
ret = -EFAULT;
goto out;
}
obj = drm_mode_object_find(dev, out_id,
DRM_MODE_OBJECT_CONNECTOR);
if (!obj) {
DRM_DEBUG("Connector id %d unknown\n", out_id);
ret = -EINVAL;
goto out;
}
connector = obj_to_connector(obj);
connector_set[i] = connector;
}
}
set.crtc = crtc;
set.x = crtc_req->x;
set.y = crtc_req->y;
set.mode = mode;
set.connectors = connector_set;
set.num_connectors = crtc_req->count_connectors;
set.fb =fb;
ret = crtc->funcs->set_config(&set);
out:
kfree(connector_set);
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_cursor_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_cursor *req = data;
struct drm_mode_object *obj;
struct drm_crtc *crtc;
int ret = 0;
DRM_DEBUG("\n");
if (!req->flags) {
DRM_ERROR("no operation set\n");
return -EINVAL;
}
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, req->crtc_id, DRM_MODE_OBJECT_CRTC);
if (!obj) {
DRM_DEBUG("Unknown CRTC ID %d\n", req->crtc_id);
ret = -EINVAL;
goto out;
}
crtc = obj_to_crtc(obj);
if (req->flags & DRM_MODE_CURSOR_BO) {
if (!crtc->funcs->cursor_set) {
DRM_ERROR("crtc does not support cursor\n");
ret = -ENXIO;
goto out;
}
/* Turns off the cursor if handle is 0 */
ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
req->width, req->height);
}
if (req->flags & DRM_MODE_CURSOR_MOVE) {
if (crtc->funcs->cursor_move) {
ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
} else {
DRM_ERROR("crtc does not support cursor\n");
ret = -EFAULT;
goto out;
}
}
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_addfb - add an FB to the graphics configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Add a new FB to the specified CRTC, given a user request.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_addfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_fb_cmd *r = data;
struct drm_mode_config *config = &dev->mode_config;
struct drm_framebuffer *fb;
int ret = 0;
if ((config->min_width > r->width) || (r->width > config->max_width)) {
DRM_ERROR("mode new framebuffer width not within limits\n");
return -EINVAL;
}
if ((config->min_height > r->height) || (r->height > config->max_height)) {
DRM_ERROR("mode new framebuffer height not within limits\n");
return -EINVAL;
}
mutex_lock(&dev->mode_config.mutex);
/* TODO check buffer is sufficently large */
/* TODO setup destructor callback */
fb = dev->mode_config.funcs->fb_create(dev, file_priv, r);
if (!fb) {
DRM_ERROR("could not create framebuffer\n");
ret = -EINVAL;
goto out;
}
r->fb_id = fb->base.id;
list_add(&fb->filp_head, &file_priv->fbs);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_rmfb - remove an FB from the configuration
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Remove the FB specified by the user.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_rmfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_object *obj;
struct drm_framebuffer *fb = NULL;
struct drm_framebuffer *fbl = NULL;
uint32_t *id = data;
int ret = 0;
int found = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, *id, DRM_MODE_OBJECT_FB);
/* TODO check that we realy get a framebuffer back. */
if (!obj) {
DRM_ERROR("mode invalid framebuffer id\n");
ret = -EINVAL;
goto out;
}
fb = obj_to_fb(obj);
list_for_each_entry(fbl, &file_priv->fbs, filp_head)
if (fb == fbl)
found = 1;
if (!found) {
DRM_ERROR("tried to remove a fb that we didn't own\n");
ret = -EINVAL;
goto out;
}
/* TODO release all crtc connected to the framebuffer */
/* TODO unhock the destructor from the buffer object */
list_del(&fb->filp_head);
fb->funcs->destroy(fb);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_mode_getfb - get FB info
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* LOCKING:
* Caller? (FIXME)
*
* Lookup the FB given its ID and return info about it.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_getfb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_fb_cmd *r = data;
struct drm_mode_object *obj;
struct drm_framebuffer *fb;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
if (!obj) {
DRM_ERROR("invalid framebuffer id\n");
ret = -EINVAL;
goto out;
}
fb = obj_to_fb(obj);
r->height = fb->height;
r->width = fb->width;
r->depth = fb->depth;
r->bpp = fb->bits_per_pixel;
r->pitch = fb->pitch;
fb->funcs->create_handle(fb, file_priv, &r->handle);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_fb_release - remove and free the FBs on this file
* @filp: file * from the ioctl
*
* LOCKING:
* Takes mode config lock.
*
* Destroy all the FBs associated with @filp.
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
void drm_fb_release(struct file *filp)
{
struct drm_file *priv = filp->private_data;
struct drm_device *dev = priv->minor->dev;
struct drm_framebuffer *fb, *tfb;
mutex_lock(&dev->mode_config.mutex);
list_for_each_entry_safe(fb, tfb, &priv->fbs, filp_head) {
list_del(&fb->filp_head);
fb->funcs->destroy(fb);
}
mutex_unlock(&dev->mode_config.mutex);
}
/**
* drm_mode_attachmode - add a mode to the user mode list
* @dev: DRM device
* @connector: connector to add the mode to
* @mode: mode to add
*
* Add @mode to @connector's user mode list.
*/
static int drm_mode_attachmode(struct drm_device *dev,
struct drm_connector *connector,
struct drm_display_mode *mode)
{
int ret = 0;
list_add_tail(&mode->head, &connector->user_modes);
return ret;
}
int drm_mode_attachmode_crtc(struct drm_device *dev, struct drm_crtc *crtc,
struct drm_display_mode *mode)
{
struct drm_connector *connector;
int ret = 0;
struct drm_display_mode *dup_mode;
int need_dup = 0;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (!connector->encoder)
break;
if (connector->encoder->crtc == crtc) {
if (need_dup)
dup_mode = drm_mode_duplicate(dev, mode);
else
dup_mode = mode;
ret = drm_mode_attachmode(dev, connector, dup_mode);
if (ret)
return ret;
need_dup = 1;
}
}
return 0;
}
EXPORT_SYMBOL(drm_mode_attachmode_crtc);
static int drm_mode_detachmode(struct drm_device *dev,
struct drm_connector *connector,
struct drm_display_mode *mode)
{
int found = 0;
int ret = 0;
struct drm_display_mode *match_mode, *t;
list_for_each_entry_safe(match_mode, t, &connector->user_modes, head) {
if (drm_mode_equal(match_mode, mode)) {
list_del(&match_mode->head);
drm_mode_destroy(dev, match_mode);
found = 1;
break;
}
}
if (!found)
ret = -EINVAL;
return ret;
}
int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode)
{
struct drm_connector *connector;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_mode_detachmode(dev, connector, mode);
}
return 0;
}
EXPORT_SYMBOL(drm_mode_detachmode_crtc);
/**
* drm_fb_attachmode - Attach a user mode to an connector
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* This attaches a user specified mode to an connector.
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_attachmode_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_mode_cmd *mode_cmd = data;
struct drm_connector *connector;
struct drm_display_mode *mode;
struct drm_mode_object *obj;
struct drm_mode_modeinfo *umode = &mode_cmd->mode;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
if (!obj) {
ret = -EINVAL;
goto out;
}
connector = obj_to_connector(obj);
mode = drm_mode_create(dev);
if (!mode) {
ret = -ENOMEM;
goto out;
}
drm_crtc_convert_umode(mode, umode);
ret = drm_mode_attachmode(dev, connector, mode);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
/**
* drm_fb_detachmode - Detach a user specified mode from an connector
* @inode: inode from the ioctl
* @filp: file * from the ioctl
* @cmd: cmd from ioctl
* @arg: arg from ioctl
*
* Called by the user via ioctl.
*
* RETURNS:
* Zero on success, errno on failure.
*/
int drm_mode_detachmode_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_object *obj;
struct drm_mode_mode_cmd *mode_cmd = data;
struct drm_connector *connector;
struct drm_display_mode mode;
struct drm_mode_modeinfo *umode = &mode_cmd->mode;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, mode_cmd->connector_id, DRM_MODE_OBJECT_CONNECTOR);
if (!obj) {
ret = -EINVAL;
goto out;
}
connector = obj_to_connector(obj);
drm_crtc_convert_umode(&mode, umode);
ret = drm_mode_detachmode(dev, connector, &mode);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
struct drm_property *drm_property_create(struct drm_device *dev, int flags,
const char *name, int num_values)
{
struct drm_property *property = NULL;
property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
if (!property)
return NULL;
if (num_values) {
property->values = kzalloc(sizeof(uint64_t)*num_values, GFP_KERNEL);
if (!property->values)
goto fail;
}
drm_mode_object_get(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
property->flags = flags;
property->num_values = num_values;
INIT_LIST_HEAD(&property->enum_blob_list);
if (name)
strncpy(property->name, name, DRM_PROP_NAME_LEN);
list_add_tail(&property->head, &dev->mode_config.property_list);
return property;
fail:
kfree(property);
return NULL;
}
EXPORT_SYMBOL(drm_property_create);
int drm_property_add_enum(struct drm_property *property, int index,
uint64_t value, const char *name)
{
struct drm_property_enum *prop_enum;
if (!(property->flags & DRM_MODE_PROP_ENUM))
return -EINVAL;
if (!list_empty(&property->enum_blob_list)) {
list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
if (prop_enum->value == value) {
strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
return 0;
}
}
}
prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
if (!prop_enum)
return -ENOMEM;
strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
prop_enum->value = value;
property->values[index] = value;
list_add_tail(&prop_enum->head, &property->enum_blob_list);
return 0;
}
EXPORT_SYMBOL(drm_property_add_enum);
void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
{
struct drm_property_enum *prop_enum, *pt;
list_for_each_entry_safe(prop_enum, pt, &property->enum_blob_list, head) {
list_del(&prop_enum->head);
kfree(prop_enum);
}
if (property->num_values)
kfree(property->values);
drm_mode_object_put(dev, &property->base);
list_del(&property->head);
kfree(property);
}
EXPORT_SYMBOL(drm_property_destroy);
int drm_connector_attach_property(struct drm_connector *connector,
struct drm_property *property, uint64_t init_val)
{
int i;
for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
if (connector->property_ids[i] == 0) {
connector->property_ids[i] = property->base.id;
connector->property_values[i] = init_val;
break;
}
}
if (i == DRM_CONNECTOR_MAX_PROPERTY)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL(drm_connector_attach_property);
int drm_connector_property_set_value(struct drm_connector *connector,
struct drm_property *property, uint64_t value)
{
int i;
for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
if (connector->property_ids[i] == property->base.id) {
connector->property_values[i] = value;
break;
}
}
if (i == DRM_CONNECTOR_MAX_PROPERTY)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL(drm_connector_property_set_value);
int drm_connector_property_get_value(struct drm_connector *connector,
struct drm_property *property, uint64_t *val)
{
int i;
for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
if (connector->property_ids[i] == property->base.id) {
*val = connector->property_values[i];
break;
}
}
if (i == DRM_CONNECTOR_MAX_PROPERTY)
return -EINVAL;
return 0;
}
EXPORT_SYMBOL(drm_connector_property_get_value);
int drm_mode_getproperty_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_object *obj;
struct drm_mode_get_property *out_resp = data;
struct drm_property *property;
int enum_count = 0;
int blob_count = 0;
int value_count = 0;
int ret = 0, i;
int copied;
struct drm_property_enum *prop_enum;
struct drm_mode_property_enum __user *enum_ptr;
struct drm_property_blob *prop_blob;
uint32_t *blob_id_ptr;
uint64_t __user *values_ptr;
uint32_t __user *blob_length_ptr;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
if (!obj) {
ret = -EINVAL;
goto done;
}
property = obj_to_property(obj);
if (property->flags & DRM_MODE_PROP_ENUM) {
list_for_each_entry(prop_enum, &property->enum_blob_list, head)
enum_count++;
} else if (property->flags & DRM_MODE_PROP_BLOB) {
list_for_each_entry(prop_blob, &property->enum_blob_list, head)
blob_count++;
}
value_count = property->num_values;
strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
out_resp->flags = property->flags;
if ((out_resp->count_values >= value_count) && value_count) {
values_ptr = (uint64_t *)(unsigned long)out_resp->values_ptr;
for (i = 0; i < value_count; i++) {
if (copy_to_user(values_ptr + i, &property->values[i], sizeof(uint64_t))) {
ret = -EFAULT;
goto done;
}
}
}
out_resp->count_values = value_count;
if (property->flags & DRM_MODE_PROP_ENUM) {
if ((out_resp->count_enum_blobs >= enum_count) && enum_count) {
copied = 0;
enum_ptr = (struct drm_mode_property_enum *)(unsigned long)out_resp->enum_blob_ptr;
list_for_each_entry(prop_enum, &property->enum_blob_list, head) {
if (copy_to_user(&enum_ptr[copied].value, &prop_enum->value, sizeof(uint64_t))) {
ret = -EFAULT;
goto done;
}
if (copy_to_user(&enum_ptr[copied].name,
&prop_enum->name, DRM_PROP_NAME_LEN)) {
ret = -EFAULT;
goto done;
}
copied++;
}
}
out_resp->count_enum_blobs = enum_count;
}
if (property->flags & DRM_MODE_PROP_BLOB) {
if ((out_resp->count_enum_blobs >= blob_count) && blob_count) {
copied = 0;
blob_id_ptr = (uint32_t *)(unsigned long)out_resp->enum_blob_ptr;
blob_length_ptr = (uint32_t *)(unsigned long)out_resp->values_ptr;
list_for_each_entry(prop_blob, &property->enum_blob_list, head) {
if (put_user(prop_blob->base.id, blob_id_ptr + copied)) {
ret = -EFAULT;
goto done;
}
if (put_user(prop_blob->length, blob_length_ptr + copied)) {
ret = -EFAULT;
goto done;
}
copied++;
}
}
out_resp->count_enum_blobs = blob_count;
}
done:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
static struct drm_property_blob *drm_property_create_blob(struct drm_device *dev, int length,
void *data)
{
struct drm_property_blob *blob;
if (!length || !data)
return NULL;
blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
if (!blob)
return NULL;
blob->data = (void *)((char *)blob + sizeof(struct drm_property_blob));
blob->length = length;
memcpy(blob->data, data, length);
drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
return blob;
}
static void drm_property_destroy_blob(struct drm_device *dev,
struct drm_property_blob *blob)
{
drm_mode_object_put(dev, &blob->base);
list_del(&blob->head);
kfree(blob);
}
int drm_mode_getblob_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_object *obj;
struct drm_mode_get_blob *out_resp = data;
struct drm_property_blob *blob;
int ret = 0;
void *blob_ptr;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, out_resp->blob_id, DRM_MODE_OBJECT_BLOB);
if (!obj) {
ret = -EINVAL;
goto done;
}
blob = obj_to_blob(obj);
if (out_resp->length == blob->length) {
blob_ptr = (void *)(unsigned long)out_resp->data;
if (copy_to_user(blob_ptr, blob->data, blob->length)){
ret = -EFAULT;
goto done;
}
}
out_resp->length = blob->length;
done:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_connector_update_edid_property(struct drm_connector *connector,
struct edid *edid)
{
struct drm_device *dev = connector->dev;
int ret = 0;
if (connector->edid_blob_ptr)
drm_property_destroy_blob(dev, connector->edid_blob_ptr);
/* Delete edid, when there is none. */
if (!edid) {
connector->edid_blob_ptr = NULL;
ret = drm_connector_property_set_value(connector, dev->mode_config.edid_property, 0);
return ret;
}
connector->edid_blob_ptr = drm_property_create_blob(connector->dev, 128, edid);
ret = drm_connector_property_set_value(connector,
dev->mode_config.edid_property,
connector->edid_blob_ptr->base.id);
return ret;
}
EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_connector_set_property *out_resp = data;
struct drm_mode_object *obj;
struct drm_property *property;
struct drm_connector *connector;
int ret = -EINVAL;
int i;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, out_resp->connector_id, DRM_MODE_OBJECT_CONNECTOR);
if (!obj) {
goto out;
}
connector = obj_to_connector(obj);
for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
if (connector->property_ids[i] == out_resp->prop_id)
break;
}
if (i == DRM_CONNECTOR_MAX_PROPERTY) {
goto out;
}
obj = drm_mode_object_find(dev, out_resp->prop_id, DRM_MODE_OBJECT_PROPERTY);
if (!obj) {
goto out;
}
property = obj_to_property(obj);
if (property->flags & DRM_MODE_PROP_IMMUTABLE)
goto out;
if (property->flags & DRM_MODE_PROP_RANGE) {
if (out_resp->value < property->values[0])
goto out;
if (out_resp->value > property->values[1])
goto out;
} else {
int found = 0;
for (i = 0; i < property->num_values; i++) {
if (property->values[i] == out_resp->value) {
found = 1;
break;
}
}
if (!found) {
goto out;
}
}
if (connector->funcs->set_property)
ret = connector->funcs->set_property(connector, property, out_resp->value);
/* store the property value if succesful */
if (!ret)
drm_connector_property_set_value(connector, property, out_resp->value);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_replacefb(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_fb_cmd *r = data;
struct drm_mode_object *obj;
struct drm_framebuffer *fb;
int found = 0;
struct drm_framebuffer *fbl = NULL;
int ret = 0;
/* right replace the current bo attached to this fb with a new bo */
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, r->fb_id, DRM_MODE_OBJECT_FB);
if (!obj) {
ret = -EINVAL;
goto out;
}
fb = obj_to_fb(obj);
list_for_each_entry(fbl, &file_priv->fbs, filp_head)
if (fb == fbl)
found = 1;
if (!found) {
DRM_ERROR("tried to replace an fb we didn't own\n");
ret = -EINVAL;
goto out;
}
if (dev->mode_config.funcs->resize_fb)
ret = dev->mode_config.funcs->resize_fb(dev, file_priv, fb, r);
else
ret = -EINVAL;
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_connector_attach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder)
{
int i;
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] == 0) {
connector->encoder_ids[i] = encoder->base.id;
return 0;
}
}
return -ENOMEM;
}
EXPORT_SYMBOL(drm_mode_connector_attach_encoder);
void drm_mode_connector_detach_encoder(struct drm_connector *connector,
struct drm_encoder *encoder)
{
int i;
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
if (connector->encoder_ids[i] == encoder->base.id) {
connector->encoder_ids[i] = 0;
if (connector->encoder == encoder)
connector->encoder = NULL;
break;
}
}
}
EXPORT_SYMBOL(drm_mode_connector_detach_encoder);
bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
int gamma_size)
{
crtc->gamma_size = gamma_size;
crtc->gamma_store = kzalloc(gamma_size * sizeof(uint16_t) * 3, GFP_KERNEL);
if (!crtc->gamma_store) {
crtc->gamma_size = 0;
return false;
}
return true;
}
EXPORT_SYMBOL(drm_mode_crtc_set_gamma_size);
int drm_mode_gamma_set_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc_lut *crtc_lut = data;
struct drm_mode_object *obj;
struct drm_crtc *crtc;
void *r_base, *g_base, *b_base;
int size;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
if (!obj) {
ret = -EINVAL;
goto out;
}
crtc = obj_to_crtc(obj);
/* memcpy into gamma store */
if (crtc_lut->gamma_size != crtc->gamma_size) {
ret = -EINVAL;
goto out;
}
size = crtc_lut->gamma_size * (sizeof(uint16_t));
r_base = crtc->gamma_store;
if (copy_from_user(r_base, (void __user *)(unsigned long)crtc_lut->red, size)) {
ret = -EFAULT;
goto out;
}
g_base = r_base + size;
if (copy_from_user(g_base, (void __user *)(unsigned long)crtc_lut->green, size)) {
ret = -EFAULT;
goto out;
}
b_base = g_base + size;
if (copy_from_user(b_base, (void __user *)(unsigned long)crtc_lut->blue, size)) {
ret = -EFAULT;
goto out;
}
crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, crtc->gamma_size);
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
int drm_mode_gamma_get_ioctl(struct drm_device *dev,
void *data, struct drm_file *file_priv)
{
struct drm_mode_crtc_lut *crtc_lut = data;
struct drm_mode_object *obj;
struct drm_crtc *crtc;
void *r_base, *g_base, *b_base;
int size;
int ret = 0;
mutex_lock(&dev->mode_config.mutex);
obj = drm_mode_object_find(dev, crtc_lut->crtc_id, DRM_MODE_OBJECT_CRTC);
if (!obj) {
ret = -EINVAL;
goto out;
}
crtc = obj_to_crtc(obj);
/* memcpy into gamma store */
if (crtc_lut->gamma_size != crtc->gamma_size) {
ret = -EINVAL;
goto out;
}
size = crtc_lut->gamma_size * (sizeof(uint16_t));
r_base = crtc->gamma_store;
if (copy_to_user((void __user *)(unsigned long)crtc_lut->red, r_base, size)) {
ret = -EFAULT;
goto out;
}
g_base = r_base + size;
if (copy_to_user((void __user *)(unsigned long)crtc_lut->green, g_base, size)) {
ret = -EFAULT;
goto out;
}
b_base = g_base + size;
if (copy_to_user((void __user *)(unsigned long)crtc_lut->blue, b_base, size)) {
ret = -EFAULT;
goto out;
}
out:
mutex_unlock(&dev->mode_config.mutex);
return ret;
}
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