MAJOR=1 MINOR=9 DEVNAME=urandom DEVMODE=0666 ยมหFile not found. !ˆฦอ „e—B็ลมห?๗!/* * 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. */ #ifndef __DRM_MODE_CONFIG_H__ #define __DRM_MODE_CONFIG_H__ #include #include #include #include #include #include struct drm_file; struct drm_device; struct drm_atomic_state; struct drm_mode_fb_cmd2; struct drm_format_info; struct drm_display_mode; /** * struct drm_mode_config_funcs - basic driver provided mode setting functions * * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that * involve drivers. */ struct drm_mode_config_funcs { /** * @fb_create: * * Create a new framebuffer object. The core does basic checks on the * requested metadata, but most of that is left to the driver. See * &struct drm_mode_fb_cmd2 for details. * * To validate the pixel format and modifier drivers can use * drm_any_plane_has_format() to make sure at least one plane supports * the requested values. Note that the driver must first determine the * actual modifier used if the request doesn't have it specified, * ie. when (@mode_cmd->flags & DRM_MODE_FB_MODIFIERS) == 0. * * IMPORTANT: These implied modifiers for legacy userspace must be * stored in struct &drm_framebuffer, including all relevant metadata * like &drm_framebuffer.pitches and &drm_framebuffer.offsets if the * modifier enables additional planes beyond the fourcc pixel format * code. This is required by the GETFB2 ioctl. * * If the parameters are deemed valid and the backing storage objects in * the underlying memory manager all exist, then the driver allocates * a new &drm_framebuffer structure, subclassed to contain * driver-specific information (like the internal native buffer object * references). It also needs to fill out all relevant metadata, which * should be done by calling drm_helper_mode_fill_fb_struct(). * * The initialization is finalized by calling drm_framebuffer_init(), * which registers the framebuffer and makes it accessible to other * threads. * * RETURNS: * * A new framebuffer with an initial reference count of 1 or a negative * error code encoded with ERR_PTR(). */ struct drm_framebuffer *(*fb_create)(struct drm_device *dev, struct drm_file *file_priv, const struct drm_format_info *info, const struct drm_mode_fb_cmd2 *mode_cmd); /** * @get_format_info: * * Allows a driver to return custom format information for special * fb layouts (eg. ones with auxiliary compression control planes). * * RETURNS: * * The format information specific to the given fb metadata, or * NULL if none is found. */ const struct drm_format_info *(*get_format_info)(u32 pixel_format, u64 modifier); /** * @mode_valid: * * Device specific val