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TOMOYO Linux Cross Reference
Linux/include/drm/drm_crtc.h

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  1 /*
  2  * Copyright © 2006 Keith Packard
  3  * Copyright © 2007-2008 Dave Airlie
  4  * Copyright © 2007-2008 Intel Corporation
  5  *   Jesse Barnes <jesse.barnes@intel.com>
  6  *
  7  * Permission is hereby granted, free of charge, to any person obtaining a
  8  * copy of this software and associated documentation files (the "Software"),
  9  * to deal in the Software without restriction, including without limitation
 10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 11  * and/or sell copies of the Software, and to permit persons to whom the
 12  * Software is furnished to do so, subject to the following conditions:
 13  *
 14  * The above copyright notice and this permission notice shall be included in
 15  * all copies or substantial portions of the Software.
 16  *
 17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 20  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 23  * OTHER DEALINGS IN THE SOFTWARE.
 24  */
 25 #ifndef __DRM_CRTC_H__
 26 #define __DRM_CRTC_H__
 27 
 28 #include <linux/i2c.h>
 29 #include <linux/spinlock.h>
 30 #include <linux/types.h>
 31 #include <linux/idr.h>
 32 #include <linux/fb.h>
 33 #include <drm/drm_mode.h>
 34 
 35 #include <drm/drm_fourcc.h>
 36 
 37 struct drm_device;
 38 struct drm_mode_set;
 39 struct drm_framebuffer;
 40 struct drm_object_properties;
 41 struct drm_file;
 42 struct drm_clip_rect;
 43 
 44 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
 45 #define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
 46 #define DRM_MODE_OBJECT_ENCODER 0xe0e0e0e0
 47 #define DRM_MODE_OBJECT_MODE 0xdededede
 48 #define DRM_MODE_OBJECT_PROPERTY 0xb0b0b0b0
 49 #define DRM_MODE_OBJECT_FB 0xfbfbfbfb
 50 #define DRM_MODE_OBJECT_BLOB 0xbbbbbbbb
 51 #define DRM_MODE_OBJECT_PLANE 0xeeeeeeee
 52 
 53 struct drm_mode_object {
 54         uint32_t id;
 55         uint32_t type;
 56         struct drm_object_properties *properties;
 57 };
 58 
 59 #define DRM_OBJECT_MAX_PROPERTY 24
 60 struct drm_object_properties {
 61         int count;
 62         uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
 63         uint64_t values[DRM_OBJECT_MAX_PROPERTY];
 64 };
 65 
 66 /*
 67  * Note on terminology:  here, for brevity and convenience, we refer to connector
 68  * control chips as 'CRTCs'.  They can control any type of connector, VGA, LVDS,
 69  * DVI, etc.  And 'screen' refers to the whole of the visible display, which
 70  * may span multiple monitors (and therefore multiple CRTC and connector
 71  * structures).
 72  */
 73 
 74 enum drm_mode_status {
 75     MODE_OK     = 0,    /* Mode OK */
 76     MODE_HSYNC,         /* hsync out of range */
 77     MODE_VSYNC,         /* vsync out of range */
 78     MODE_H_ILLEGAL,     /* mode has illegal horizontal timings */
 79     MODE_V_ILLEGAL,     /* mode has illegal horizontal timings */
 80     MODE_BAD_WIDTH,     /* requires an unsupported linepitch */
 81     MODE_NOMODE,        /* no mode with a matching name */
 82     MODE_NO_INTERLACE,  /* interlaced mode not supported */
 83     MODE_NO_DBLESCAN,   /* doublescan mode not supported */
 84     MODE_NO_VSCAN,      /* multiscan mode not supported */
 85     MODE_MEM,           /* insufficient video memory */
 86     MODE_VIRTUAL_X,     /* mode width too large for specified virtual size */
 87     MODE_VIRTUAL_Y,     /* mode height too large for specified virtual size */
 88     MODE_MEM_VIRT,      /* insufficient video memory given virtual size */
 89     MODE_NOCLOCK,       /* no fixed clock available */
 90     MODE_CLOCK_HIGH,    /* clock required is too high */
 91     MODE_CLOCK_LOW,     /* clock required is too low */
 92     MODE_CLOCK_RANGE,   /* clock/mode isn't in a ClockRange */
 93     MODE_BAD_HVALUE,    /* horizontal timing was out of range */
 94     MODE_BAD_VVALUE,    /* vertical timing was out of range */
 95     MODE_BAD_VSCAN,     /* VScan value out of range */
 96     MODE_HSYNC_NARROW,  /* horizontal sync too narrow */
 97     MODE_HSYNC_WIDE,    /* horizontal sync too wide */
 98     MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
 99     MODE_HBLANK_WIDE,   /* horizontal blanking too wide */
100     MODE_VSYNC_NARROW,  /* vertical sync too narrow */
101     MODE_VSYNC_WIDE,    /* vertical sync too wide */
102     MODE_VBLANK_NARROW, /* vertical blanking too narrow */
103     MODE_VBLANK_WIDE,   /* vertical blanking too wide */
104     MODE_PANEL,         /* exceeds panel dimensions */
105     MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
106     MODE_ONE_WIDTH,     /* only one width is supported */
107     MODE_ONE_HEIGHT,    /* only one height is supported */
108     MODE_ONE_SIZE,      /* only one resolution is supported */
109     MODE_NO_REDUCED,    /* monitor doesn't accept reduced blanking */
110     MODE_UNVERIFIED = -3, /* mode needs to reverified */
111     MODE_BAD = -2,      /* unspecified reason */
112     MODE_ERROR  = -1    /* error condition */
113 };
114 
115 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
116                                     DRM_MODE_TYPE_CRTC_C)
117 
118 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
119         .name = nm, .status = 0, .type = (t), .clock = (c), \
120         .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
121         .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
122         .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
123         .vscan = (vs), .flags = (f), \
124         .base.type = DRM_MODE_OBJECT_MODE
125 
126 #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
127 
128 struct drm_display_mode {
129         /* Header */
130         struct list_head head;
131         struct drm_mode_object base;
132 
133         char name[DRM_DISPLAY_MODE_LEN];
134 
135         enum drm_mode_status status;
136         unsigned int type;
137 
138         /* Proposed mode values */
139         int clock;              /* in kHz */
140         int hdisplay;
141         int hsync_start;
142         int hsync_end;
143         int htotal;
144         int hskew;
145         int vdisplay;
146         int vsync_start;
147         int vsync_end;
148         int vtotal;
149         int vscan;
150         unsigned int flags;
151 
152         /* Addressable image size (may be 0 for projectors, etc.) */
153         int width_mm;
154         int height_mm;
155 
156         /* Actual mode we give to hw */
157         int clock_index;
158         int synth_clock;
159         int crtc_hdisplay;
160         int crtc_hblank_start;
161         int crtc_hblank_end;
162         int crtc_hsync_start;
163         int crtc_hsync_end;
164         int crtc_htotal;
165         int crtc_hskew;
166         int crtc_vdisplay;
167         int crtc_vblank_start;
168         int crtc_vblank_end;
169         int crtc_vsync_start;
170         int crtc_vsync_end;
171         int crtc_vtotal;
172 
173         /* Driver private mode info */
174         int private_size;
175         int *private;
176         int private_flags;
177 
178         int vrefresh;           /* in Hz */
179         int hsync;              /* in kHz */
180 };
181 
182 enum drm_connector_status {
183         connector_status_connected = 1,
184         connector_status_disconnected = 2,
185         connector_status_unknown = 3,
186 };
187 
188 enum subpixel_order {
189         SubPixelUnknown = 0,
190         SubPixelHorizontalRGB,
191         SubPixelHorizontalBGR,
192         SubPixelVerticalRGB,
193         SubPixelVerticalBGR,
194         SubPixelNone,
195 };
196 
197 #define DRM_COLOR_FORMAT_RGB444         (1<<0)
198 #define DRM_COLOR_FORMAT_YCRCB444       (1<<1)
199 #define DRM_COLOR_FORMAT_YCRCB422       (1<<2)
200 /*
201  * Describes a given display (e.g. CRT or flat panel) and its limitations.
202  */
203 struct drm_display_info {
204         char name[DRM_DISPLAY_INFO_LEN];
205 
206         /* Physical size */
207         unsigned int width_mm;
208         unsigned int height_mm;
209 
210         /* Clock limits FIXME: storage format */
211         unsigned int min_vfreq, max_vfreq;
212         unsigned int min_hfreq, max_hfreq;
213         unsigned int pixel_clock;
214         unsigned int bpc;
215 
216         enum subpixel_order subpixel_order;
217         u32 color_formats;
218 
219         u8 cea_rev;
220 };
221 
222 struct drm_framebuffer_funcs {
223         /* note: use drm_framebuffer_remove() */
224         void (*destroy)(struct drm_framebuffer *framebuffer);
225         int (*create_handle)(struct drm_framebuffer *fb,
226                              struct drm_file *file_priv,
227                              unsigned int *handle);
228         /**
229          * Optinal callback for the dirty fb ioctl.
230          *
231          * Userspace can notify the driver via this callback
232          * that a area of the framebuffer has changed and should
233          * be flushed to the display hardware.
234          *
235          * See documentation in drm_mode.h for the struct
236          * drm_mode_fb_dirty_cmd for more information as all
237          * the semantics and arguments have a one to one mapping
238          * on this function.
239          */
240         int (*dirty)(struct drm_framebuffer *framebuffer,
241                      struct drm_file *file_priv, unsigned flags,
242                      unsigned color, struct drm_clip_rect *clips,
243                      unsigned num_clips);
244 };
245 
246 struct drm_framebuffer {
247         struct drm_device *dev;
248         /*
249          * Note that the fb is refcounted for the benefit of driver internals,
250          * for example some hw, disabling a CRTC/plane is asynchronous, and
251          * scanout does not actually complete until the next vblank.  So some
252          * cleanup (like releasing the reference(s) on the backing GEM bo(s))
253          * should be deferred.  In cases like this, the driver would like to
254          * hold a ref to the fb even though it has already been removed from
255          * userspace perspective.
256          */
257         struct kref refcount;
258         /*
259          * Place on the dev->mode_config.fb_list, access protected by
260          * dev->mode_config.fb_lock.
261          */
262         struct list_head head;
263         struct drm_mode_object base;
264         const struct drm_framebuffer_funcs *funcs;
265         unsigned int pitches[4];
266         unsigned int offsets[4];
267         unsigned int width;
268         unsigned int height;
269         /* depth can be 15 or 16 */
270         unsigned int depth;
271         int bits_per_pixel;
272         int flags;
273         uint32_t pixel_format; /* fourcc format */
274         struct list_head filp_head;
275         /* if you are using the helper */
276         void *helper_private;
277 };
278 
279 struct drm_property_blob {
280         struct drm_mode_object base;
281         struct list_head head;
282         unsigned int length;
283         unsigned char data[];
284 };
285 
286 struct drm_property_enum {
287         uint64_t value;
288         struct list_head head;
289         char name[DRM_PROP_NAME_LEN];
290 };
291 
292 struct drm_property {
293         struct list_head head;
294         struct drm_mode_object base;
295         uint32_t flags;
296         char name[DRM_PROP_NAME_LEN];
297         uint32_t num_values;
298         uint64_t *values;
299 
300         struct list_head enum_blob_list;
301 };
302 
303 struct drm_crtc;
304 struct drm_connector;
305 struct drm_encoder;
306 struct drm_pending_vblank_event;
307 struct drm_plane;
308 
309 /**
310  * drm_crtc_funcs - control CRTCs for a given device
311  * @save: save CRTC state
312  * @restore: restore CRTC state
313  * @reset: reset CRTC after state has been invalidated (e.g. resume)
314  * @cursor_set: setup the cursor
315  * @cursor_move: move the cursor
316  * @gamma_set: specify color ramp for CRTC
317  * @destroy: deinit and free object
318  * @set_property: called when a property is changed
319  * @set_config: apply a new CRTC configuration
320  * @page_flip: initiate a page flip
321  *
322  * The drm_crtc_funcs structure is the central CRTC management structure
323  * in the DRM.  Each CRTC controls one or more connectors (note that the name
324  * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
325  * connectors, not just CRTs).
326  *
327  * Each driver is responsible for filling out this structure at startup time,
328  * in addition to providing other modesetting features, like i2c and DDC
329  * bus accessors.
330  */
331 struct drm_crtc_funcs {
332         /* Save CRTC state */
333         void (*save)(struct drm_crtc *crtc); /* suspend? */
334         /* Restore CRTC state */
335         void (*restore)(struct drm_crtc *crtc); /* resume? */
336         /* Reset CRTC state */
337         void (*reset)(struct drm_crtc *crtc);
338 
339         /* cursor controls */
340         int (*cursor_set)(struct drm_crtc *crtc, struct drm_file *file_priv,
341                           uint32_t handle, uint32_t width, uint32_t height);
342         int (*cursor_move)(struct drm_crtc *crtc, int x, int y);
343 
344         /* Set gamma on the CRTC */
345         void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
346                           uint32_t start, uint32_t size);
347         /* Object destroy routine */
348         void (*destroy)(struct drm_crtc *crtc);
349 
350         int (*set_config)(struct drm_mode_set *set);
351 
352         /*
353          * Flip to the given framebuffer.  This implements the page
354          * flip ioctl described in drm_mode.h, specifically, the
355          * implementation must return immediately and block all
356          * rendering to the current fb until the flip has completed.
357          * If userspace set the event flag in the ioctl, the event
358          * argument will point to an event to send back when the flip
359          * completes, otherwise it will be NULL.
360          */
361         int (*page_flip)(struct drm_crtc *crtc,
362                          struct drm_framebuffer *fb,
363                          struct drm_pending_vblank_event *event);
364 
365         int (*set_property)(struct drm_crtc *crtc,
366                             struct drm_property *property, uint64_t val);
367 };
368 
369 /**
370  * drm_crtc - central CRTC control structure
371  * @dev: parent DRM device
372  * @head: list management
373  * @base: base KMS object for ID tracking etc.
374  * @enabled: is this CRTC enabled?
375  * @mode: current mode timings
376  * @hwmode: mode timings as programmed to hw regs
377  * @invert_dimensions: for purposes of error checking crtc vs fb sizes,
378  *    invert the width/height of the crtc.  This is used if the driver
379  *    is performing 90 or 270 degree rotated scanout
380  * @x: x position on screen
381  * @y: y position on screen
382  * @funcs: CRTC control functions
383  * @gamma_size: size of gamma ramp
384  * @gamma_store: gamma ramp values
385  * @framedur_ns: precise frame timing
386  * @framedur_ns: precise line timing
387  * @pixeldur_ns: precise pixel timing
388  * @helper_private: mid-layer private data
389  * @properties: property tracking for this CRTC
390  *
391  * Each CRTC may have one or more connectors associated with it.  This structure
392  * allows the CRTC to be controlled.
393  */
394 struct drm_crtc {
395         struct drm_device *dev;
396         struct list_head head;
397 
398         /**
399          * crtc mutex
400          *
401          * This provides a read lock for the overall crtc state (mode, dpms
402          * state, ...) and a write lock for everything which can be update
403          * without a full modeset (fb, cursor data, ...)
404          */
405         struct mutex mutex;
406 
407         struct drm_mode_object base;
408 
409         /* framebuffer the connector is currently bound to */
410         struct drm_framebuffer *fb;
411 
412         bool enabled;
413 
414         /* Requested mode from modesetting. */
415         struct drm_display_mode mode;
416 
417         /* Programmed mode in hw, after adjustments for encoders,
418          * crtc, panel scaling etc. Needed for timestamping etc.
419          */
420         struct drm_display_mode hwmode;
421 
422         bool invert_dimensions;
423 
424         int x, y;
425         const struct drm_crtc_funcs *funcs;
426 
427         /* CRTC gamma size for reporting to userspace */
428         uint32_t gamma_size;
429         uint16_t *gamma_store;
430 
431         /* Constants needed for precise vblank and swap timestamping. */
432         s64 framedur_ns, linedur_ns, pixeldur_ns;
433 
434         /* if you are using the helper */
435         void *helper_private;
436 
437         struct drm_object_properties properties;
438 };
439 
440 
441 /**
442  * drm_connector_funcs - control connectors on a given device
443  * @dpms: set power state (see drm_crtc_funcs above)
444  * @save: save connector state
445  * @restore: restore connector state
446  * @reset: reset connector after state has been invalidated (e.g. resume)
447  * @detect: is this connector active?
448  * @fill_modes: fill mode list for this connector
449  * @set_property: property for this connector may need an update
450  * @destroy: make object go away
451  * @force: notify the driver that the connector is forced on
452  *
453  * Each CRTC may have one or more connectors attached to it.  The functions
454  * below allow the core DRM code to control connectors, enumerate available modes,
455  * etc.
456  */
457 struct drm_connector_funcs {
458         void (*dpms)(struct drm_connector *connector, int mode);
459         void (*save)(struct drm_connector *connector);
460         void (*restore)(struct drm_connector *connector);
461         void (*reset)(struct drm_connector *connector);
462 
463         /* Check to see if anything is attached to the connector.
464          * @force is set to false whilst polling, true when checking the
465          * connector due to user request. @force can be used by the driver
466          * to avoid expensive, destructive operations during automated
467          * probing.
468          */
469         enum drm_connector_status (*detect)(struct drm_connector *connector,
470                                             bool force);
471         int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, uint32_t max_height);
472         int (*set_property)(struct drm_connector *connector, struct drm_property *property,
473                              uint64_t val);
474         void (*destroy)(struct drm_connector *connector);
475         void (*force)(struct drm_connector *connector);
476 };
477 
478 /**
479  * drm_encoder_funcs - encoder controls
480  * @reset: reset state (e.g. at init or resume time)
481  * @destroy: cleanup and free associated data
482  *
483  * Encoders sit between CRTCs and connectors.
484  */
485 struct drm_encoder_funcs {
486         void (*reset)(struct drm_encoder *encoder);
487         void (*destroy)(struct drm_encoder *encoder);
488 };
489 
490 #define DRM_CONNECTOR_MAX_UMODES 16
491 #define DRM_CONNECTOR_LEN 32
492 #define DRM_CONNECTOR_MAX_ENCODER 3
493 
494 /**
495  * drm_encoder - central DRM encoder structure
496  * @dev: parent DRM device
497  * @head: list management
498  * @base: base KMS object
499  * @encoder_type: one of the %DRM_MODE_ENCODER_<foo> types in drm_mode.h
500  * @possible_crtcs: bitmask of potential CRTC bindings
501  * @possible_clones: bitmask of potential sibling encoders for cloning
502  * @crtc: currently bound CRTC
503  * @funcs: control functions
504  * @helper_private: mid-layer private data
505  *
506  * CRTCs drive pixels to encoders, which convert them into signals
507  * appropriate for a given connector or set of connectors.
508  */
509 struct drm_encoder {
510         struct drm_device *dev;
511         struct list_head head;
512 
513         struct drm_mode_object base;
514         int encoder_type;
515         uint32_t possible_crtcs;
516         uint32_t possible_clones;
517 
518         struct drm_crtc *crtc;
519         const struct drm_encoder_funcs *funcs;
520         void *helper_private;
521 };
522 
523 enum drm_connector_force {
524         DRM_FORCE_UNSPECIFIED,
525         DRM_FORCE_OFF,
526         DRM_FORCE_ON,         /* force on analog part normally */
527         DRM_FORCE_ON_DIGITAL, /* for DVI-I use digital connector */
528 };
529 
530 /* should we poll this connector for connects and disconnects */
531 /* hot plug detectable */
532 #define DRM_CONNECTOR_POLL_HPD (1 << 0)
533 /* poll for connections */
534 #define DRM_CONNECTOR_POLL_CONNECT (1 << 1)
535 /* can cleanly poll for disconnections without flickering the screen */
536 /* DACs should rarely do this without a lot of testing */
537 #define DRM_CONNECTOR_POLL_DISCONNECT (1 << 2)
538 
539 #define MAX_ELD_BYTES   128
540 
541 /**
542  * drm_connector - central DRM connector control structure
543  * @dev: parent DRM device
544  * @kdev: kernel device for sysfs attributes
545  * @attr: sysfs attributes
546  * @head: list management
547  * @base: base KMS object
548  * @connector_type: one of the %DRM_MODE_CONNECTOR_<foo> types from drm_mode.h
549  * @connector_type_id: index into connector type enum
550  * @interlace_allowed: can this connector handle interlaced modes?
551  * @doublescan_allowed: can this connector handle doublescan?
552  * @modes: modes available on this connector (from fill_modes() + user)
553  * @status: one of the drm_connector_status enums (connected, not, or unknown)
554  * @probed_modes: list of modes derived directly from the display
555  * @display_info: information about attached display (e.g. from EDID)
556  * @funcs: connector control functions
557  * @edid_blob_ptr: DRM property containing EDID if present
558  * @properties: property tracking for this connector
559  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
560  * @dpms: current dpms state
561  * @helper_private: mid-layer private data
562  * @force: a %DRM_FORCE_<foo> state for forced mode sets
563  * @encoder_ids: valid encoders for this connector
564  * @encoder: encoder driving this connector, if any
565  * @eld: EDID-like data, if present
566  * @dvi_dual: dual link DVI, if found
567  * @max_tmds_clock: max clock rate, if found
568  * @latency_present: AV delay info from ELD, if found
569  * @video_latency: video latency info from ELD, if found
570  * @audio_latency: audio latency info from ELD, if found
571  * @null_edid_counter: track sinks that give us all zeros for the EDID
572  *
573  * Each connector may be connected to one or more CRTCs, or may be clonable by
574  * another connector if they can share a CRTC.  Each connector also has a specific
575  * position in the broader display (referred to as a 'screen' though it could
576  * span multiple monitors).
577  */
578 struct drm_connector {
579         struct drm_device *dev;
580         struct device kdev;
581         struct device_attribute *attr;
582         struct list_head head;
583 
584         struct drm_mode_object base;
585 
586         int connector_type;
587         int connector_type_id;
588         bool interlace_allowed;
589         bool doublescan_allowed;
590         struct list_head modes; /* list of modes on this connector */
591 
592         enum drm_connector_status status;
593 
594         /* these are modes added by probing with DDC or the BIOS */
595         struct list_head probed_modes;
596 
597         struct drm_display_info display_info;
598         const struct drm_connector_funcs *funcs;
599 
600         struct drm_property_blob *edid_blob_ptr;
601         struct drm_object_properties properties;
602 
603         uint8_t polled; /* DRM_CONNECTOR_POLL_* */
604 
605         /* requested DPMS state */
606         int dpms;
607 
608         void *helper_private;
609 
610         /* forced on connector */
611         enum drm_connector_force force;
612         uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
613         struct drm_encoder *encoder; /* currently active encoder */
614 
615         /* EDID bits */
616         uint8_t eld[MAX_ELD_BYTES];
617         bool dvi_dual;
618         int max_tmds_clock;     /* in MHz */
619         bool latency_present[2];
620         int video_latency[2];   /* [0]: progressive, [1]: interlaced */
621         int audio_latency[2];
622         int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */
623         unsigned bad_edid_counter;
624 };
625 
626 /**
627  * drm_plane_funcs - driver plane control functions
628  * @update_plane: update the plane configuration
629  * @disable_plane: shut down the plane
630  * @destroy: clean up plane resources
631  * @set_property: called when a property is changed
632  */
633 struct drm_plane_funcs {
634         int (*update_plane)(struct drm_plane *plane,
635                             struct drm_crtc *crtc, struct drm_framebuffer *fb,
636                             int crtc_x, int crtc_y,
637                             unsigned int crtc_w, unsigned int crtc_h,
638                             uint32_t src_x, uint32_t src_y,
639                             uint32_t src_w, uint32_t src_h);
640         int (*disable_plane)(struct drm_plane *plane);
641         void (*destroy)(struct drm_plane *plane);
642 
643         int (*set_property)(struct drm_plane *plane,
644                             struct drm_property *property, uint64_t val);
645 };
646 
647 /**
648  * drm_plane - central DRM plane control structure
649  * @dev: DRM device this plane belongs to
650  * @head: for list management
651  * @base: base mode object
652  * @possible_crtcs: pipes this plane can be bound to
653  * @format_types: array of formats supported by this plane
654  * @format_count: number of formats supported
655  * @crtc: currently bound CRTC
656  * @fb: currently bound fb
657  * @gamma_size: size of gamma table
658  * @gamma_store: gamma correction table
659  * @enabled: enabled flag
660  * @funcs: helper functions
661  * @helper_private: storage for drver layer
662  * @properties: property tracking for this plane
663  */
664 struct drm_plane {
665         struct drm_device *dev;
666         struct list_head head;
667 
668         struct drm_mode_object base;
669 
670         uint32_t possible_crtcs;
671         uint32_t *format_types;
672         uint32_t format_count;
673 
674         struct drm_crtc *crtc;
675         struct drm_framebuffer *fb;
676 
677         /* CRTC gamma size for reporting to userspace */
678         uint32_t gamma_size;
679         uint16_t *gamma_store;
680 
681         bool enabled;
682 
683         const struct drm_plane_funcs *funcs;
684         void *helper_private;
685 
686         struct drm_object_properties properties;
687 };
688 
689 /**
690  * drm_mode_set - new values for a CRTC config change
691  * @head: list management
692  * @fb: framebuffer to use for new config
693  * @crtc: CRTC whose configuration we're about to change
694  * @mode: mode timings to use
695  * @x: position of this CRTC relative to @fb
696  * @y: position of this CRTC relative to @fb
697  * @connectors: array of connectors to drive with this CRTC if possible
698  * @num_connectors: size of @connectors array
699  *
700  * Represents a single crtc the connectors that it drives with what mode
701  * and from which framebuffer it scans out from.
702  *
703  * This is used to set modes.
704  */
705 struct drm_mode_set {
706         struct drm_framebuffer *fb;
707         struct drm_crtc *crtc;
708         struct drm_display_mode *mode;
709 
710         uint32_t x;
711         uint32_t y;
712 
713         struct drm_connector **connectors;
714         size_t num_connectors;
715 };
716 
717 /**
718  * struct drm_mode_config_funcs - basic driver provided mode setting functions
719  * @fb_create: create a new framebuffer object
720  * @output_poll_changed: function to handle output configuration changes
721  *
722  * Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
723  * involve drivers.
724  */
725 struct drm_mode_config_funcs {
726         struct drm_framebuffer *(*fb_create)(struct drm_device *dev,
727                                              struct drm_file *file_priv,
728                                              struct drm_mode_fb_cmd2 *mode_cmd);
729         void (*output_poll_changed)(struct drm_device *dev);
730 };
731 
732 /**
733  * drm_mode_group - group of mode setting resources for potential sub-grouping
734  * @num_crtcs: CRTC count
735  * @num_encoders: encoder count
736  * @num_connectors: connector count
737  * @id_list: list of KMS object IDs in this group
738  *
739  * Currently this simply tracks the global mode setting state.  But in the
740  * future it could allow groups of objects to be set aside into independent
741  * control groups for use by different user level processes (e.g. two X servers
742  * running simultaneously on different heads, each with their own mode
743  * configuration and freedom of mode setting).
744  */
745 struct drm_mode_group {
746         uint32_t num_crtcs;
747         uint32_t num_encoders;
748         uint32_t num_connectors;
749 
750         /* list of object IDs for this group */
751         uint32_t *id_list;
752 };
753 
754 /**
755  * drm_mode_config - Mode configuration control structure
756  * @mutex: mutex protecting KMS related lists and structures
757  * @idr_mutex: mutex for KMS ID allocation and management
758  * @crtc_idr: main KMS ID tracking object
759  * @num_fb: number of fbs available
760  * @fb_list: list of framebuffers available
761  * @num_connector: number of connectors on this device
762  * @connector_list: list of connector objects
763  * @num_encoder: number of encoders on this device
764  * @encoder_list: list of encoder objects
765  * @num_crtc: number of CRTCs on this device
766  * @crtc_list: list of CRTC objects
767  * @min_width: minimum pixel width on this device
768  * @min_height: minimum pixel height on this device
769  * @max_width: maximum pixel width on this device
770  * @max_height: maximum pixel height on this device
771  * @funcs: core driver provided mode setting functions
772  * @fb_base: base address of the framebuffer
773  * @poll_enabled: track polling status for this device
774  * @output_poll_work: delayed work for polling in process context
775  * @*_property: core property tracking
776  *
777  * Core mode resource tracking structure.  All CRTC, encoders, and connectors
778  * enumerated by the driver are added here, as are global properties.  Some
779  * global restrictions are also here, e.g. dimension restrictions.
780  */
781 struct drm_mode_config {
782         struct mutex mutex; /* protects configuration (mode lists etc.) */
783         struct mutex idr_mutex; /* for IDR management */
784         struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
785         /* this is limited to one for now */
786 
787 
788         /**
789          * fb_lock - mutex to protect fb state
790          *
791          * Besides the global fb list his also protects the fbs list in the
792          * file_priv
793          */
794         struct mutex fb_lock;
795         int num_fb;
796         struct list_head fb_list;
797 
798         int num_connector;
799         struct list_head connector_list;
800         int num_encoder;
801         struct list_head encoder_list;
802         int num_plane;
803         struct list_head plane_list;
804 
805         int num_crtc;
806         struct list_head crtc_list;
807 
808         struct list_head property_list;
809 
810         int min_width, min_height;
811         int max_width, max_height;
812         const struct drm_mode_config_funcs *funcs;
813         resource_size_t fb_base;
814 
815         /* output poll support */
816         bool poll_enabled;
817         bool poll_running;
818         struct delayed_work output_poll_work;
819 
820         /* pointers to standard properties */
821         struct list_head property_blob_list;
822         struct drm_property *edid_property;
823         struct drm_property *dpms_property;
824 
825         /* DVI-I properties */
826         struct drm_property *dvi_i_subconnector_property;
827         struct drm_property *dvi_i_select_subconnector_property;
828 
829         /* TV properties */
830         struct drm_property *tv_subconnector_property;
831         struct drm_property *tv_select_subconnector_property;
832         struct drm_property *tv_mode_property;
833         struct drm_property *tv_left_margin_property;
834         struct drm_property *tv_right_margin_property;
835         struct drm_property *tv_top_margin_property;
836         struct drm_property *tv_bottom_margin_property;
837         struct drm_property *tv_brightness_property;
838         struct drm_property *tv_contrast_property;
839         struct drm_property *tv_flicker_reduction_property;
840         struct drm_property *tv_overscan_property;
841         struct drm_property *tv_saturation_property;
842         struct drm_property *tv_hue_property;
843 
844         /* Optional properties */
845         struct drm_property *scaling_mode_property;
846         struct drm_property *dithering_mode_property;
847         struct drm_property *dirty_info_property;
848 
849         /* dumb ioctl parameters */
850         uint32_t preferred_depth, prefer_shadow;
851 };
852 
853 #define obj_to_crtc(x) container_of(x, struct drm_crtc, base)
854 #define obj_to_connector(x) container_of(x, struct drm_connector, base)
855 #define obj_to_encoder(x) container_of(x, struct drm_encoder, base)
856 #define obj_to_mode(x) container_of(x, struct drm_display_mode, base)
857 #define obj_to_fb(x) container_of(x, struct drm_framebuffer, base)
858 #define obj_to_property(x) container_of(x, struct drm_property, base)
859 #define obj_to_blob(x) container_of(x, struct drm_property_blob, base)
860 #define obj_to_plane(x) container_of(x, struct drm_plane, base)
861 
862 struct drm_prop_enum_list {
863         int type;
864         char *name;
865 };
866 
867 extern void drm_modeset_lock_all(struct drm_device *dev);
868 extern void drm_modeset_unlock_all(struct drm_device *dev);
869 extern void drm_warn_on_modeset_not_all_locked(struct drm_device *dev);
870 
871 extern int drm_crtc_init(struct drm_device *dev,
872                          struct drm_crtc *crtc,
873                          const struct drm_crtc_funcs *funcs);
874 extern void drm_crtc_cleanup(struct drm_crtc *crtc);
875 
876 extern int drm_connector_init(struct drm_device *dev,
877                               struct drm_connector *connector,
878                               const struct drm_connector_funcs *funcs,
879                               int connector_type);
880 
881 extern void drm_connector_cleanup(struct drm_connector *connector);
882 /* helper to unplug all connectors from sysfs for device */
883 extern void drm_connector_unplug_all(struct drm_device *dev);
884 
885 extern int drm_encoder_init(struct drm_device *dev,
886                             struct drm_encoder *encoder,
887                             const struct drm_encoder_funcs *funcs,
888                             int encoder_type);
889 
890 extern int drm_plane_init(struct drm_device *dev,
891                           struct drm_plane *plane,
892                           unsigned long possible_crtcs,
893                           const struct drm_plane_funcs *funcs,
894                           const uint32_t *formats, uint32_t format_count,
895                           bool priv);
896 extern void drm_plane_cleanup(struct drm_plane *plane);
897 
898 extern void drm_encoder_cleanup(struct drm_encoder *encoder);
899 
900 extern char *drm_get_connector_name(struct drm_connector *connector);
901 extern char *drm_get_dpms_name(int val);
902 extern char *drm_get_dvi_i_subconnector_name(int val);
903 extern char *drm_get_dvi_i_select_name(int val);
904 extern char *drm_get_tv_subconnector_name(int val);
905 extern char *drm_get_tv_select_name(int val);
906 extern void drm_fb_release(struct drm_file *file_priv);
907 extern int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_mode_group *group);
908 extern bool drm_probe_ddc(struct i2c_adapter *adapter);
909 extern struct edid *drm_get_edid(struct drm_connector *connector,
910                                  struct i2c_adapter *adapter);
911 extern int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid);
912 extern void drm_mode_probed_add(struct drm_connector *connector, struct drm_display_mode *mode);
913 extern void drm_mode_remove(struct drm_connector *connector, struct drm_display_mode *mode);
914 extern void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src);
915 extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
916                                                    const struct drm_display_mode *mode);
917 extern void drm_mode_debug_printmodeline(const struct drm_display_mode *mode);
918 extern void drm_mode_config_init(struct drm_device *dev);
919 extern void drm_mode_config_reset(struct drm_device *dev);
920 extern void drm_mode_config_cleanup(struct drm_device *dev);
921 extern void drm_mode_set_name(struct drm_display_mode *mode);
922 extern bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
923 extern bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2);
924 extern int drm_mode_width(const struct drm_display_mode *mode);
925 extern int drm_mode_height(const struct drm_display_mode *mode);
926 
927 /* for us by fb module */
928 extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
929 extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
930 extern void drm_mode_list_concat(struct list_head *head,
931                                  struct list_head *new);
932 extern void drm_mode_validate_size(struct drm_device *dev,
933                                    struct list_head *mode_list,
934                                    int maxX, int maxY, int maxPitch);
935 extern void drm_mode_validate_clocks(struct drm_device *dev,
936                                      struct list_head *mode_list,
937                                      int *min, int *max, int n_ranges);
938 extern void drm_mode_prune_invalid(struct drm_device *dev,
939                                    struct list_head *mode_list, bool verbose);
940 extern void drm_mode_sort(struct list_head *mode_list);
941 extern int drm_mode_hsync(const struct drm_display_mode *mode);
942 extern int drm_mode_vrefresh(const struct drm_display_mode *mode);
943 extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
944                                   int adjust_flags);
945 extern void drm_mode_connector_list_update(struct drm_connector *connector);
946 extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
947                                                 struct edid *edid);
948 extern int drm_object_property_set_value(struct drm_mode_object *obj,
949                                          struct drm_property *property,
950                                          uint64_t val);
951 extern int drm_object_property_get_value(struct drm_mode_object *obj,
952                                          struct drm_property *property,
953                                          uint64_t *value);
954 extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
955 extern void drm_framebuffer_set_object(struct drm_device *dev,
956                                        unsigned long handle);
957 extern int drm_framebuffer_init(struct drm_device *dev,
958                                 struct drm_framebuffer *fb,
959                                 const struct drm_framebuffer_funcs *funcs);
960 extern struct drm_framebuffer *drm_framebuffer_lookup(struct drm_device *dev,
961                                                       uint32_t id);
962 extern void drm_framebuffer_unreference(struct drm_framebuffer *fb);
963 extern void drm_framebuffer_reference(struct drm_framebuffer *fb);
964 extern void drm_framebuffer_remove(struct drm_framebuffer *fb);
965 extern void drm_framebuffer_cleanup(struct drm_framebuffer *fb);
966 extern void drm_framebuffer_unregister_private(struct drm_framebuffer *fb);
967 extern int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc);
968 extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
969 extern void drm_crtc_probe_connector_modes(struct drm_device *dev, int maxX, int maxY);
970 extern bool drm_crtc_in_use(struct drm_crtc *crtc);
971 
972 extern void drm_object_attach_property(struct drm_mode_object *obj,
973                                        struct drm_property *property,
974                                        uint64_t init_val);
975 extern struct drm_property *drm_property_create(struct drm_device *dev, int flags,
976                                                 const char *name, int num_values);
977 extern struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags,
978                                          const char *name,
979                                          const struct drm_prop_enum_list *props,
980                                          int num_values);
981 struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
982                                          int flags, const char *name,
983                                          const struct drm_prop_enum_list *props,
984                                          int num_values);
985 struct drm_property *drm_property_create_range(struct drm_device *dev, int flags,
986                                          const char *name,
987                                          uint64_t min, uint64_t max);
988 extern void drm_property_destroy(struct drm_device *dev, struct drm_property *property);
989 extern int drm_property_add_enum(struct drm_property *property, int index,
990                                  uint64_t value, const char *name);
991 extern int drm_mode_create_dvi_i_properties(struct drm_device *dev);
992 extern int drm_mode_create_tv_properties(struct drm_device *dev, int num_formats,
993                                      char *formats[]);
994 extern int drm_mode_create_scaling_mode_property(struct drm_device *dev);
995 extern int drm_mode_create_dithering_property(struct drm_device *dev);
996 extern int drm_mode_create_dirty_info_property(struct drm_device *dev);
997 extern char *drm_get_encoder_name(struct drm_encoder *encoder);
998 
999 extern int drm_mode_connector_attach_encoder(struct drm_connector *connector,
1000                                              struct drm_encoder *encoder);
1001 extern void drm_mode_connector_detach_encoder(struct drm_connector *connector,
1002                                            struct drm_encoder *encoder);
1003 extern int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
1004                                          int gamma_size);
1005 extern struct drm_mode_object *drm_mode_object_find(struct drm_device *dev,
1006                 uint32_t id, uint32_t type);
1007 /* IOCTLs */
1008 extern int drm_mode_getresources(struct drm_device *dev,
1009                                  void *data, struct drm_file *file_priv);
1010 extern int drm_mode_getplane_res(struct drm_device *dev, void *data,
1011                                    struct drm_file *file_priv);
1012 extern int drm_mode_getcrtc(struct drm_device *dev,
1013                             void *data, struct drm_file *file_priv);
1014 extern int drm_mode_getconnector(struct drm_device *dev,
1015                               void *data, struct drm_file *file_priv);
1016 extern int drm_mode_set_config_internal(struct drm_mode_set *set);
1017 extern int drm_mode_setcrtc(struct drm_device *dev,
1018                             void *data, struct drm_file *file_priv);
1019 extern int drm_mode_getplane(struct drm_device *dev,
1020                                void *data, struct drm_file *file_priv);
1021 extern int drm_mode_setplane(struct drm_device *dev,
1022                                void *data, struct drm_file *file_priv);
1023 extern int drm_mode_cursor_ioctl(struct drm_device *dev,
1024                                 void *data, struct drm_file *file_priv);
1025 extern int drm_mode_addfb(struct drm_device *dev,
1026                           void *data, struct drm_file *file_priv);
1027 extern int drm_mode_addfb2(struct drm_device *dev,
1028                            void *data, struct drm_file *file_priv);
1029 extern uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth);
1030 extern int drm_mode_rmfb(struct drm_device *dev,
1031                          void *data, struct drm_file *file_priv);
1032 extern int drm_mode_getfb(struct drm_device *dev,
1033                           void *data, struct drm_file *file_priv);
1034 extern int drm_mode_dirtyfb_ioctl(struct drm_device *dev,
1035                                   void *data, struct drm_file *file_priv);
1036 
1037 extern int drm_mode_getproperty_ioctl(struct drm_device *dev,
1038                                       void *data, struct drm_file *file_priv);
1039 extern int drm_mode_getblob_ioctl(struct drm_device *dev,
1040                                   void *data, struct drm_file *file_priv);
1041 extern int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
1042                                               void *data, struct drm_file *file_priv);
1043 extern int drm_mode_hotplug_ioctl(struct drm_device *dev,
1044                                   void *data, struct drm_file *file_priv);
1045 extern int drm_mode_replacefb(struct drm_device *dev,
1046                               void *data, struct drm_file *file_priv);
1047 extern int drm_mode_getencoder(struct drm_device *dev,
1048                                void *data, struct drm_file *file_priv);
1049 extern int drm_mode_gamma_get_ioctl(struct drm_device *dev,
1050                                     void *data, struct drm_file *file_priv);
1051 extern int drm_mode_gamma_set_ioctl(struct drm_device *dev,
1052                                     void *data, struct drm_file *file_priv);
1053 extern u8 *drm_find_cea_extension(struct edid *edid);
1054 extern u8 drm_match_cea_mode(const struct drm_display_mode *to_match);
1055 extern bool drm_detect_hdmi_monitor(struct edid *edid);
1056 extern bool drm_detect_monitor_audio(struct edid *edid);
1057 extern bool drm_rgb_quant_range_selectable(struct edid *edid);
1058 extern int drm_mode_page_flip_ioctl(struct drm_device *dev,
1059                                     void *data, struct drm_file *file_priv);
1060 extern struct drm_display_mode *drm_cvt_mode(struct drm_device *dev,
1061                                 int hdisplay, int vdisplay, int vrefresh,
1062                                 bool reduced, bool interlaced, bool margins);
1063 extern struct drm_display_mode *drm_gtf_mode(struct drm_device *dev,
1064                                 int hdisplay, int vdisplay, int vrefresh,
1065                                 bool interlaced, int margins);
1066 extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
1067                                 int hdisplay, int vdisplay, int vrefresh,
1068                                 bool interlaced, int margins, int GTF_M,
1069                                 int GTF_2C, int GTF_K, int GTF_2J);
1070 extern int drm_add_modes_noedid(struct drm_connector *connector,
1071                                 int hdisplay, int vdisplay);
1072 
1073 extern int drm_edid_header_is_valid(const u8 *raw_edid);
1074 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
1075 extern bool drm_edid_is_valid(struct edid *edid);
1076 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
1077                                            int hsize, int vsize, int fresh,
1078                                            bool rb);
1079 
1080 extern int drm_mode_create_dumb_ioctl(struct drm_device *dev,
1081                                       void *data, struct drm_file *file_priv);
1082 extern int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
1083                                     void *data, struct drm_file *file_priv);
1084 extern int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
1085                                       void *data, struct drm_file *file_priv);
1086 extern int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
1087                                              struct drm_file *file_priv);
1088 extern int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
1089                                            struct drm_file *file_priv);
1090 
1091 extern void drm_fb_get_bpp_depth(uint32_t format, unsigned int *depth,
1092                                  int *bpp);
1093 extern int drm_format_num_planes(uint32_t format);
1094 extern int drm_format_plane_cpp(uint32_t format, int plane);
1095 extern int drm_format_horz_chroma_subsampling(uint32_t format);
1096 extern int drm_format_vert_chroma_subsampling(uint32_t format);
1097 
1098 #endif /* __DRM_CRTC_H__ */
1099 

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