DRM: add mode setting support

Add mode setting support to the DRM layer.

This is a fairly big chunk of work that allows DRM drivers to provide
full output control and configuration capabilities to userspace.  It was
motivated by several factors:
  - the fb layer's APIs aren't suited for anything but simple
    configurations
  - coordination between the fb layer, DRM layer, and various userspace
    drivers is poor to non-existent (radeonfb excepted)
  - user level mode setting drivers makes displaying panic & oops
    messages more difficult
  - suspend/resume of graphics state is possible in many more
    configurations with kernel level support

This commit just adds the core DRM part of the mode setting APIs.
Driver specific commits using these new structure and APIs will follow.

Co-authors: Jesse Barnes <jbarnes@virtuousgeek.org>, Jakob Bornecrantz <jakob@tungstengraphics.com>
Contributors: Alan Hourihane <alanh@tungstengraphics.com>, Maarten Maathuis <madman2003@gmail.com>

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 737 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
new file mode 100644
index 000000000000..08a884bea446
--- /dev/null
+++ b/include/drm/drm_crtc.h
@@ -0,0 +1,737 @@
+/*
+ * Copyright © 2006 Keith Packard
+ * Copyright © 2007-2008 Dave Airlie
+ * Copyright © 2007-2008 Intel Corporation
+ *   Jesse Barnes <jesse.barnes@intel.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __DRM_CRTC_H__
+#define __DRM_CRTC_H__
+
+#include <linux/i2c.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/idr.h>
+
+#include <linux/fb.h>
+
+struct drm_device;
+struct drm_mode_set;
+struct drm_framebuffer;
+
+
+#define DRM_MODE_OBJECT_CRTC 0xcccccccc
+#define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
+#define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
+#define DRM_MODE_OBJECT_MODE 0xdededede
+#define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
+#define DRM_MODE_OBJECT_FB 0xfbfbfbfb
+#define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
+
+struct drm_mode_object {
+        uint32_t id;
+        uint32_t type;
+};
+
+/*
+ * Note on terminology:  here, for brevity and convenience, we refer to connector
+ * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
+ * DVI, etc.  And 'screen' refers to the whole of the visible display, which
+ * may span multiple monitors (and therefore multiple CRTC and connector
+ * structures).
+ */
+
+enum drm_mode_status {
+    MODE_OK     = 0,    /* Mode OK */
+    MODE_HSYNC,         /* hsync out of range */
+    MODE_VSYNC,         /* vsync out of range */
+    MODE_H_ILLEGAL,     /* mode has illegal horizontal timings */
+    MODE_V_ILLEGAL,     /* mode has illegal horizontal timings */
+    MODE_BAD_WIDTH,     /* requires an unsupported linepitch */
+    MODE_NOMODE,        /* no mode with a maching name */
+    MODE_NO_INTERLACE,  /* interlaced mode not supported */
+    MODE_NO_DBLESCAN,   /* doublescan mode not supported */
+    MODE_NO_VSCAN,      /* multiscan mode not supported */
+    MODE_MEM,           /* insufficient video memory */
+    MODE_VIRTUAL_X,     /* mode width too large for specified virtual size */
+    MODE_VIRTUAL_Y,     /* mode height too large for specified virtual size */
+    MODE_MEM_VIRT,      /* insufficient video memory given virtual size */
+    MODE_NOCLOCK,       /* no fixed clock available */
+    MODE_CLOCK_HIGH,    /* clock required is too high */
+    MODE_CLOCK_LOW,     /* clock required is too low */
+    MODE_CLOCK_RANGE,   /* clock/mode isn't in a ClockRange */
+    MODE_BAD_HVALUE,    /* horizontal timing was out of range */
+    MODE_BAD_VVALUE,    /* vertical timing was out of range */
+    MODE_BAD_VSCAN,     /* VScan value out of range */
+    MODE_HSYNC_NARROW,  /* horizontal sync too narrow */
+    MODE_HSYNC_WIDE,    /* horizontal sync too wide */
+    MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
+    MODE_HBLANK_WIDE,   /* horizontal blanking too wide */
+    MODE_VSYNC_NARROW,  /* vertical sync too narrow */
+    MODE_VSYNC_WIDE,    /* vertical sync too wide */
+    MODE_VBLANK_NARROW, /* vertical blanking too narrow */
+    MODE_VBLANK_WIDE,   /* vertical blanking too wide */
+    MODE_PANEL,         /* exceeds panel dimensions */
+    MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
+    MODE_ONE_WIDTH,     /* only one width is supported */
+    MODE_ONE_HEIGHT,    /* only one height is supported */
+    MODE_ONE_SIZE,      /* only one resolution is supported */
+    MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
+    MODE_UNVERIFIED = -3, /* mode needs to reverified */
+    MODE_BAD = -2,      /* unspecified reason */
+    MODE_ERROR  = -1    /* error condition */
+};
+
+#define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
+                                    DRM_MODE_TYPE_CRTC_C)
+
+#define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
+        .name = nm, .status = 0, .type = (t), .clock = (c), \
+        .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
+        .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
+        .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
+        .vscan = (vs), .flags = (f), .vrefresh = 0
+
+#define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
+
+struct drm_display_mode {
+        /* Header */
+        struct list_head head;
+        struct drm_mode_object base;
+
+        char name[DRM_DISPLAY_MODE_LEN];
+
+        int connector_count;
+        enum drm_mode_status status;
+        int type;
+
+        /* Proposed mode values */
+        int clock;
+        int hdisplay;
+        int hsync_start;
+        int hsync_end;
+        int htotal;
+        int hskew;
+        int vdisplay;
+        int vsync_start;
+        int vsync_end;
+        int vtotal;
+        int vscan;
+        unsigned int flags;
+
+        /* Addressable image size (may be 0 for projectors, etc.) */
+        int width_mm;
+        int height_mm;
+
+        /* Actual mode we give to hw */
+        int clock_index;
+        int synth_clock;
+        int crtc_hdisplay;
+        int crtc_hblank_start;
+        int crtc_hblank_end;
+        int crtc_hsync_start;
+        int crtc_hsync_end;
+        int crtc_htotal;
+        int crtc_hskew;
+        int crtc_vdisplay;
+        int crtc_vblank_start;
+        int crtc_vblank_end;
+        int crtc_vsync_start;
+        int crtc_vsync_end;
+        int crtc_vtotal;
+        int crtc_hadjusted;
+        int crtc_vadjusted;
+
+        /* Driver private mode info */
+        int private_size;
+        int *private;
+        int private_flags;
+
+        int vrefresh;
+        float hsync;
+};
+
+enum drm_connector_status {
+        connector_status_connected = 1,
+        connector_status_disconnected = 2,
+        connector_status_unknown = 3,
+};
+
+enum subpixel_order {
+        SubPixelUnknown = 0,
+        SubPixelHorizontalRGB,
+        SubPixelHorizontalBGR,
+        SubPixelVerticalRGB,
+        SubPixelVerticalBGR,
+        SubPixelNone,
+};
+
+
+/*
+ * Describes a given display (e.g. CRT or flat panel) and its limitations.
+ */
+struct drm_display_info {
+        char name[DRM_DISPLAY_INFO_LEN];
+        /* Input info */
+        bool serration_vsync;
+        bool sync_on_green;
+        bool composite_sync;
+        bool separate_syncs;
+        bool blank_to_black;
+        unsigned char video_level;
+        bool digital;
+        /* Physical size */
+        unsigned int width_mm;
+        unsigned int height_mm;
+
+        /* Display parameters */
+        unsigned char gamma; /* FIXME: storage format */
+        bool gtf_supported;
+        bool standard_color;
+        enum {
+                monochrome = 0,
+                rgb,
+                other,
+                unknown,
+        } display_type;
+        bool active_off_supported;
+        bool suspend_supported;
+        bool standby_supported;
+
+        /* Color info FIXME: storage format */
+        unsigned short redx, redy;
+        unsigned short greenx, greeny;
+        unsigned short bluex, bluey;
+        unsigned short whitex, whitey;
+
+        /* Clock limits FIXME: storage format */
+        unsigned int min_vfreq, max_vfreq;
+        unsigned int min_hfreq, max_hfreq;
+        unsigned int pixel_clock;
+
+        /* White point indices FIXME: storage format */
+        unsigned int wpx1, wpy1;
+        unsigned int wpgamma1;
+        unsigned int wpx2, wpy2;
+        unsigned int wpgamma2;
+
+        enum subpixel_order subpixel_order;
+
+        char *raw_edid; /* if any */
+};
+
+struct drm_framebuffer_funcs {
+        void (*destroy)(struct drm_framebuffer *framebuffer);
+        int (*create_handle)(struct drm_framebuffer *fb,
+                             struct drm_file *file_priv,
+                             unsigned int *handle);
+};
+
+struct drm_framebuffer {
+        struct drm_device *dev;
+        struct list_head head;
+        struct drm_mode_object base;
+        const struct drm_framebuffer_funcs *funcs;
+        unsigned int pitch;
+        unsigned int width;
+        unsigned int height;
+        /* depth can be 15 or 16 */
+        unsigned int depth;
+        int bits_per_pixel;
+        int flags;
+        void *fbdev;
+        u32 pseudo_palette[17];
+        struct list_head filp_head;
+};
+
+struct drm_property_blob {
+        struct drm_mode_object base;
+        struct list_head head;
+        unsigned int length;
+        void *data;
+};
+
+struct drm_property_enum {
+        uint64_t value;
+        struct list_head head;
+        char name[DRM_PROP_NAME_LEN];
+};
+
+struct drm_property {
+        struct list_head head;
+        struct drm_mode_object base;
+        uint32_t flags;
+        char name[DRM_PROP_NAME_LEN];
+        uint32_t num_values;
+        uint64_t *values;
+
+        struct list_head enum_blob_list;
+};
+
+struct drm_crtc;
+struct drm_connector;
+struct drm_encoder;
+
+/**
+ * drm_crtc_funcs - control CRTCs for a given device
+ * @dpms: control display power levels
+ * @save: save CRTC state
+ * @resore: restore CRTC state
+ * @lock: lock the CRTC
+ * @unlock: unlock the CRTC
+ * @shadow_allocate: allocate shadow pixmap
+ * @shadow_create: create shadow pixmap for rotation support
+ * @shadow_destroy: free shadow pixmap
+ * @mode_fixup: fixup proposed mode
+ * @mode_set: set the desired mode on the CRTC
+ * @gamma_set: specify color ramp for CRTC
+ * @destroy: deinit and free object.
+ *
+ * The drm_crtc_funcs structure is the central CRTC management structure
+ * in the DRM.  Each CRTC controls one or more connectors (note that the name
+ * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
+ * connectors, not just CRTs).
+ *
+ * Each driver is responsible for filling out this structure at startup time,
+ * in addition to providing other modesetting features, like i2c and DDC
+ * bus accessors.
+ */
+struct drm_crtc_funcs {
+        /* Save CRTC state */
+        void (*save)(struct drm_crtc *crtc); /* suspend? */
+        /* Restore CRTC state */
+        void (*restore)(struct drm_crtc *crtc); /* resume? */
+
+        /* cursor controls */
+        int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
+                          uint32_t handle, uint32_t width, uint32_t height);
+        int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
+
+        /* Set gamma on the CRTC */
+        void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
+                          uint32_t size);
+        /* Object destroy routine */
+        void (*destroy)(struct drm_crtc *crtc);
+
+        int (*set_config)(struct drm_mode_set *set);
+};
+
+/**
+ * drm_crtc - central CRTC control structure
+ * @enabled: is this CRTC enabled?
+ * @x: x position on screen
+ * @y: y position on screen
+ * @desired_mode: new desired mode
+ * @desired_x: desired x for desired_mode
+ * @desired_y: desired y for desired_mode
+ * @funcs: CRTC control functions
+ *
+ * Each CRTC may have one or more connectors associated with it.  This structure
+ * allows the CRTC to be controlled.
+ */
+struct drm_crtc {
+        struct drm_device *dev;
+        struct list_head head;
+
+        struct drm_mode_object base;
+
+        /* framebuffer the connector is currently bound to */
+        struct drm_framebuffer *fb;
+
+        bool enabled;
+
+        struct drm_display_mode mode;
+
+        int x, y;
+        struct drm_display_mode *desired_mode;
+        int desired_x, desired_y;
+        const struct drm_crtc_funcs *funcs;
+
+        /* CRTC gamma size for reporting to userspace */
+        uint32_t gamma_size;
+        uint16_t *gamma_store;
+
+        /* if you are using the helper */
+        void *helper_private;
+};
+
+
+/**
+ * drm_connector_funcs - control connectors on a given device
+ * @dpms: set power state (see drm_crtc_funcs above)
+ * @save: save connector state
+ * @restore: restore connector state
+ * @mode_valid: is this mode valid on the given connector?
+ * @mode_fixup: try to fixup proposed mode for this connector
+ * @mode_set: set this mode
+ * @detect: is this connector active?
+ * @get_modes: get mode list for this connector
+ * @set_property: property for this connector may need update
+ * @destroy: make object go away
+ *
+ * Each CRTC may have one or more connectors attached to it.  The functions
+ * below allow the core DRM code to control connectors, enumerate available modes,
+ * etc.
+ */
+struct drm_connector_funcs {
+        void (*dpms)(struct drm_connector *connector, int mode);
+        void (*save)(struct drm_connector *connector);
+        void (*restore)(struct drm_connector *connector);
+        enum drm_connector_status (*detect)(struct drm_connector *connector);
+        void (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
+        int (*set_property)(struct drm_connector *connector, struct drm_property *property,
+                             uint64_t val);
+        void (*destroy)(struct drm_connector *connector);
+};
+
+struct drm_encoder_funcs {
+        void (*destroy)(struct drm_encoder *encoder);
+};
+
+#define DRM_CONNECTOR_MAX_UMODES 16
+#define DRM_CONNECTOR_MAX_PROPERTY 16
+#define DRM_CONNECTOR_LEN 32
+#define DRM_CONNECTOR_MAX_ENCODER 2
+
+/**
+ * drm_encoder - central DRM encoder structure
+ */
+struct drm_encoder {
+        struct drm_device *dev;
+        struct list_head head;
+
+        struct drm_mode_object base;
+        int encoder_type;
+        uint32_t possible_crtcs;
+        uint32_t possible_clones;
+
+        struct drm_crtc *crtc;
+        const struct drm_encoder_funcs *funcs;
+        void *helper_private;
+};
+
+/**
+ * drm_connector - central DRM connector control structure
+ * @crtc: CRTC this connector is currently connected to, NULL if none
+ * @interlace_allowed: can this connector handle interlaced modes?
+ * @doublescan_allowed: can this connector handle doublescan?
+ * @available_modes: modes available on this connector (from get_modes() + user)
+ * @initial_x: initial x position for this connector
+ * @initial_y: initial y position for this connector
+ * @status: connector connected?
+ * @funcs: connector control functions
+ *
+ * Each connector may be connected to one or more CRTCs, or may be clonable by
+ * another connector if they can share a CRTC.  Each connector also has a specific
+ * position in the broader display (referred to as a 'screen' though it could
+ * span multiple monitors).
+ */
+struct drm_connector {
+        struct drm_device *dev;
+        struct device kdev;
+        struct device_attribute *attr;
+        struct list_head head;
+
+        struct drm_mode_object base;
+
+        int connector_type;
+        int connector_type_id;
+        bool interlace_allowed;
+        bool doublescan_allowed;
+        struct list_head modes; /* list of modes on this connector */
+
+        int initial_x, initial_y;
+        enum drm_connector_status status;
+
+        /* these are modes added by probing with DDC or the BIOS */
+        struct list_head probed_modes;
+
+        struct drm_display_info display_info;
+        const struct drm_connector_funcs *funcs;
+
+        struct list_head user_modes;
+        struct drm_property_blob *edid_blob_ptr;
+        u32 property_ids[DRM_CONNECTOR_MAX_PROPERTY];
+        uint64_t property_values[DRM_CONNECTOR_MAX_PROPERTY];
+
+        void *helper_private;
+
+        uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
+        uint32_t force_encoder_id;
+        struct drm_encoder *encoder; /* currently active encoder */
+};
+
+/**
+ * struct drm_mode_set
+ *
+ * Represents a single crtc the connectors that it drives with what mode
+ * and from which framebuffer it scans out from.
+ *
+ * This is used to set modes.
+ */
+struct drm_mode_set {
+        struct list_head head;
+
+        struct drm_framebuffer *fb;
+        struct drm_crtc *crtc;
+        struct drm_display_mode *mode;
+
+        uint32_t x;
+        uint32_t y;
+
+        struct drm_connector **connectors;
+        size_t num_connectors;
+};
+
+/**
+ * struct drm_mode_config_funcs - configure CRTCs for a given screen layout
+ * @resize: adjust CRTCs as necessary for the proposed layout
+ *
+ * Currently only a resize hook is available.  DRM will call back into the
+ * driver with a new screen width and height.  If the driver can't support
+ * the proposed size, it can return false.  Otherwise it should adjust
+ * the CRTC<->connector mappings as needed and update its view of the screen.
+ */
+struct drm_mode_config_funcs {
+        int (*resize_fb)(struct drm_device *dev, struct drm_file *file_priv, struct drm_framebuffer *fb, struct drm_mode_fb_cmd *mode_cmd);
+        struct drm_framebuffer *(*fb_create)(struct drm_device *dev, struct drm_file *file_priv, struct drm_mode_fb_cmd *mode_cmd);
+        int (*fb_changed)(struct drm_device *dev);
+};
+
+struct drm_mode_group {
+        uint32_t num_crtcs;
+        uint32_t num_encoders;
+        uint32_t num_connectors;
+
+        /* list of object IDs for this group */
+        uint32_t *id_list;
+};
+
+/**
+ * drm_mode_config - Mode configuration control structure
+ *
+ */
+struct drm_mode_config {
+        struct mutex mutex; /* protects configuration and IDR */
+        struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
+        /* this is limited to one for now */
+        int num_fb;
+        struct list_head fb_list;
+        int num_connector;
+        struct list_head connector_list;
+        int num_encoder;
+        struct list_head encoder_list;
+
+        int num_crtc;
+        struct list_head crtc_list;
+
+        struct list_head property_list;
+
+        /* in-kernel framebuffers - hung of filp_head in drm_framebuffer */
+        struct list_head fb_kernel_list;
+
+        int min_width, min_height;
+        int max_width, max_height;
+        struct drm_mode_config_funcs *funcs;
+        unsigned long fb_base;
+
+        /* pointers to standard properties */
+        struct list_head property_blob_list;
+        struct drm_property *edid_property;
+        struct drm_property *dpms_property;
+
+        /* DVI-I properties */
+        struct drm_property *dvi_i_subconnector_property;
+        struct drm_property *dvi_i_select_subconnector_property;
+
+        /* TV properties */
+        struct drm_property *tv_subconnector_property;
+        struct drm_property *tv_select_subconnector_property;
+        struct drm_property *tv_mode_property;
+        struct drm_property *tv_left_margin_property;
+        struct drm_property *tv_right_margin_property;
+        struct drm_property *tv_top_margin_property;
+        struct drm_property *tv_bottom_margin_property;
+
+        /* Optional properties */
+        struct drm_property *scaling_mode_property;
+        struct drm_property *dithering_mode_property;
+
+        /* hotplug */
+        uint32_t hotplug_counter;
+};
+
+#define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
+#define obj_to_connector(x) container_of(x, struct drm_connector, base)
+#define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
+#define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
+#define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
+#define obj_to_property(x) container_of(x, struct drm_property, base)
+#define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
+
+
+extern void drm_crtc_init(struct drm_device *dev,
+                          struct drm_crtc *crtc,
+                          const struct drm_crtc_funcs *funcs);
+extern void drm_crtc_cleanup(struct drm_crtc *crtc);
+
+extern void drm_connector_init(struct drm_device *dev,
+                            struct drm_connector *connector,
+                            const struct drm_connector_funcs *funcs,
+                            int connector_type);
+
+extern void drm_connector_cleanup(struct drm_connector *connector);
+
+extern void drm_encoder_init(struct drm_device *dev,
+                             struct drm_encoder *encoder,
+                             const struct drm_encoder_funcs *funcs,
+                             int encoder_type);
+
+extern void drm_encoder_cleanup(struct drm_encoder *encoder);
+
+extern char *drm_get_connector_name(struct drm_connector *connector);
+extern char *drm_get_dpms_name(int val);
+extern char *drm_get_dvi_i_subconnector_name(int val);
+extern char *drm_get_dvi_i_select_name(int val);
+extern char *drm_get_tv_subconnector_name(int val);
+extern char *drm_get_tv_select_name(int val);
+extern void drm_fb_release(struct file *filp);
+extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
+extern struct edid *drm_get_edid(struct drm_connector *connector,
+                                 struct i2c_adapter *adapter);
+extern unsigned char *drm_do_probe_ddc_edid(struct i2c_adapter *adapter);
+extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
+extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
+extern void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode);
+extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
+                                                   struct drm_display_mode *mode);
+extern void drm_mode_debug_printmodeline(struct drm_display_mode *mode);
+extern void drm_mode_config_init(struct drm_device *dev);
+extern void drm_mode_config_cleanup(struct drm_device *dev);
+extern void drm_mode_set_name(struct drm_display_mode *mode);
+extern bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2);
+extern int drm_mode_width(struct drm_display_mode *mode);
+extern int drm_mode_height(struct drm_display_mode *mode);
+
+/* for us by fb module */
+extern int drm_mode_attachmode_crtc(struct drm_device *dev,
+                                    struct drm_crtc *crtc,
+                                    struct drm_display_mode *mode);
+extern int drm_mode_detachmode_crtc(struct drm_device *dev, struct drm_display_mode *mode);
+
+extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
+extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
+extern void drm_mode_list_concat(struct list_head *head,
+                                 struct list_head *new);
+extern void drm_mode_validate_size(struct drm_device *dev,
+                                   struct list_head *mode_list,
+                                   int maxX, int maxY, int maxPitch);
+extern void drm_mode_prune_invalid(struct drm_device *dev,
+                                   struct list_head *mode_list, bool verbose);
+extern void drm_mode_sort(struct list_head *mode_list);
+extern int drm_mode_vrefresh(struct drm_display_mode *mode);
+extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
+                                  int adjust_flags);
+extern void drm_mode_connector_list_update(struct drm_connector *connector);
+extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
+                                                struct edid *edid);
+extern int drm_connector_property_set_value(struct drm_connector *connector,
+                                         struct drm_property *property,
+                                         uint64_t value);
+extern int drm_connector_property_get_value(struct drm_connector *connector,
+                                         struct drm_property *property,
+                                         uint64_t *value);
+extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
+extern void drm_framebuffer_set_object(struct drm_device *dev,
+                                       unsigned long handle);
+extern int drm_framebuffer_init(struct drm_device *dev,
+                                struct drm_framebuffer *fb,
+                                const struct drm_framebuffer_funcs *funcs);
+extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
+extern int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc);
+extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
+extern void drm_crtc_probe_connector_modes(struct drm_device *dev, int maxX, int maxY);
+extern bool drm_crtc_in_use(struct drm_crtc *crtc);
+
+extern int drm_connector_attach_property(struct drm_connector *connector,
+                                      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 void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
+extern int drm_property_add_enum(struct drm_property *property, int index,
+                                 uint64_t value, const char *name);
+extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
+extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
+                                     char *formats[]);
+extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
+extern int drm_mode_create_dithering_property(struct drm_device *dev);
+extern char *drm_get_encoder_name(struct drm_encoder *encoder);
+
+extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
+                                             struct drm_encoder *encoder);
+extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,
+                                           struct drm_encoder *encoder);
+extern bool drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
+                                         int gamma_size);
+extern void *drm_mode_object_find(struct drm_device *dev, uint32_t id, uint32_t type);
+/* IOCTLs */
+extern int drm_mode_getresources(struct drm_device *dev,
+                                 void *data, struct drm_file *file_priv);
+
+extern int drm_mode_getcrtc(struct drm_device *dev,
+                            void *data, struct drm_file *file_priv);
+extern int drm_mode_getconnector(struct drm_device *dev,
+                              void *data, struct drm_file *file_priv);
+extern int drm_mode_setcrtc(struct drm_device *dev,
+                            void *data, struct drm_file *file_priv);
+extern int drm_mode_cursor_ioctl(struct drm_device *dev,
+                                void *data, struct drm_file *file_priv);
+extern int drm_mode_addfb(struct drm_device *dev,
+                          void *data, struct drm_file *file_priv);
+extern int drm_mode_rmfb(struct drm_device *dev,
+                         void *data, struct drm_file *file_priv);
+extern int drm_mode_getfb(struct drm_device *dev,
+                          void *data, struct drm_file *file_priv);
+extern int drm_mode_addmode_ioctl(struct drm_device *dev,
+                                  void *data, struct drm_file *file_priv);
+extern int drm_mode_rmmode_ioctl(struct drm_device *dev,
+                                 void *data, struct drm_file *file_priv);
+extern int drm_mode_attachmode_ioctl(struct drm_device *dev,
+                                     void *data, struct drm_file *file_priv);
+extern int drm_mode_detachmode_ioctl(struct drm_device *dev,
+                                     void *data, struct drm_file *file_priv);
+
+extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
+                                      void *data, struct drm_file *file_priv);
+extern int drm_mode_getblob_ioctl(struct drm_device *dev,
+                                  void *data, struct drm_file *file_priv);
+extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
+                                              void *data, struct drm_file *file_priv);
+extern int drm_mode_hotplug_ioctl(struct drm_device *dev,
+                                  void *data, struct drm_file *file_priv);
+extern int drm_mode_replacefb(struct drm_device *dev,
+                              void *data, struct drm_file *file_priv);
+extern int drm_mode_getencoder(struct drm_device *dev,
+                               void *data, struct drm_file *file_priv);
+extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
+                                    void *data, struct drm_file *file_priv);
+extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
+                                    void *data, struct drm_file *file_priv);
+#endif /* __DRM_CRTC_H__ */