2 * Copyright © 2006 Keith Packard
3 * Copyright © 2007 Intel Corporation
4 * Jesse Barnes <jesse.barnes@intel.com>
10 #include <linux/spinlock.h>
11 #include <linux/types.h>
12 #include <linux/idr.h>
19 * Note on terminology: here, for brevity and convenience, we refer to output
20 * control chips as 'CRTCs'. They can control any type of output, VGA, LVDS,
21 * DVI, etc. And 'screen' refers to the whole of the visible display, which
22 * may span multiple monitors (and therefore multiple CRTC and output
26 enum drm_mode_status {
27 MODE_OK = 0, /* Mode OK */
28 MODE_HSYNC, /* hsync out of range */
29 MODE_VSYNC, /* vsync out of range */
30 MODE_H_ILLEGAL, /* mode has illegal horizontal timings */
31 MODE_V_ILLEGAL, /* mode has illegal horizontal timings */
32 MODE_BAD_WIDTH, /* requires an unsupported linepitch */
33 MODE_NOMODE, /* no mode with a maching name */
34 MODE_NO_INTERLACE, /* interlaced mode not supported */
35 MODE_NO_DBLESCAN, /* doublescan mode not supported */
36 MODE_NO_VSCAN, /* multiscan mode not supported */
37 MODE_MEM, /* insufficient video memory */
38 MODE_VIRTUAL_X, /* mode width too large for specified virtual size */
39 MODE_VIRTUAL_Y, /* mode height too large for specified virtual size */
40 MODE_MEM_VIRT, /* insufficient video memory given virtual size */
41 MODE_NOCLOCK, /* no fixed clock available */
42 MODE_CLOCK_HIGH, /* clock required is too high */
43 MODE_CLOCK_LOW, /* clock required is too low */
44 MODE_CLOCK_RANGE, /* clock/mode isn't in a ClockRange */
45 MODE_BAD_HVALUE, /* horizontal timing was out of range */
46 MODE_BAD_VVALUE, /* vertical timing was out of range */
47 MODE_BAD_VSCAN, /* VScan value out of range */
48 MODE_HSYNC_NARROW, /* horizontal sync too narrow */
49 MODE_HSYNC_WIDE, /* horizontal sync too wide */
50 MODE_HBLANK_NARROW, /* horizontal blanking too narrow */
51 MODE_HBLANK_WIDE, /* horizontal blanking too wide */
52 MODE_VSYNC_NARROW, /* vertical sync too narrow */
53 MODE_VSYNC_WIDE, /* vertical sync too wide */
54 MODE_VBLANK_NARROW, /* vertical blanking too narrow */
55 MODE_VBLANK_WIDE, /* vertical blanking too wide */
56 MODE_PANEL, /* exceeds panel dimensions */
57 MODE_INTERLACE_WIDTH, /* width too large for interlaced mode */
58 MODE_ONE_WIDTH, /* only one width is supported */
59 MODE_ONE_HEIGHT, /* only one height is supported */
60 MODE_ONE_SIZE, /* only one resolution is supported */
61 MODE_NO_REDUCED, /* monitor doesn't accept reduced blanking */
62 MODE_UNVERIFIED = -3, /* mode needs to reverified */
63 MODE_BAD = -2, /* unspecified reason */
64 MODE_ERROR = -1 /* error condition */
67 #define DRM_MODE_TYPE_BUILTIN (1<<0)
68 #define DRM_MODE_TYPE_CLOCK_C ((1<<1) | DRM_MODE_TYPE_BUILTIN)
69 #define DRM_MODE_TYPE_CRTC_C ((1<<2) | DRM_MODE_TYPE_BUILTIN)
70 #define DRM_MODE_TYPE_PREFERRED (1<<3)
71 #define DRM_MODE_TYPE_DEFAULT (1<<4)
72 #define DRM_MODE_TYPE_USERDEF (1<<5)
73 #define DRM_MODE_TYPE_DRIVER (1<<6)
75 #define DRM_MODE_TYPE_CLOCK_CRTC_C (DRM_MODE_TYPE_CLOCK_C | \
78 #define DRM_MODE(nm, t, c, hd, hss, hse, ht, hsk, vd, vss, vse, vt, vs, f) \
79 .name = nm, .status = 0, .type = (t), .clock = (c), \
80 .hdisplay = (hd), .hsync_start = (hss), .hsync_end = (hse), \
81 .htotal = (ht), .hskew = (hsk), .vdisplay = (vd), \
82 .vsync_start = (vss), .vsync_end = (vse), .vtotal = (vt), \
83 .vscan = (vs), .flags = (f), .vrefresh = 0
85 struct drm_display_mode {
87 struct list_head head;
88 char name[DRM_DISPLAY_MODE_LEN];
91 enum drm_mode_status status;
94 /* Proposed mode values */
108 /* Actual mode we give to hw */
112 int crtc_hblank_start;
114 int crtc_hsync_start;
119 int crtc_vblank_start;
121 int crtc_vsync_start;
127 /* Driver private mode info */
136 /* Video mode flags */
137 #define V_PHSYNC (1<<0)
138 #define V_NHSYNC (1<<1)
139 #define V_PVSYNC (1<<2)
140 #define V_NVSYNC (1<<3)
141 #define V_INTERLACE (1<<4)
142 #define V_DBLSCAN (1<<5)
143 #define V_CSYNC (1<<6)
144 #define V_PCSYNC (1<<7)
145 #define V_NCSYNC (1<<8)
146 #define V_HSKEW (1<<9) /* hskew provided */
147 #define V_BCAST (1<<10)
148 #define V_PIXMUX (1<<11)
149 #define V_DBLCLK (1<<12)
150 #define V_CLKDIV2 (1<<13)
152 #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
154 #define DPMSModeStandby 1
155 #define DPMSModeSuspend 2
156 #define DPMSModeOff 3
158 enum drm_output_status {
159 output_status_connected,
160 output_status_disconnected,
161 output_status_unknown,
164 enum subpixel_order {
166 SubPixelHorizontalRGB,
167 SubPixelHorizontalBGR,
174 * Describes a given display (e.g. CRT or flat panel) and its limitations.
176 struct drm_display_info {
177 char name[DRM_DISPLAY_INFO_LEN];
179 bool serration_vsync;
184 unsigned char video_level;
187 unsigned int width_mm;
188 unsigned int height_mm;
190 /* Display parameters */
191 unsigned char gamma; /* FIXME: storage format */
200 bool active_off_supported;
201 bool suspend_supported;
202 bool standby_supported;
204 /* Color info FIXME: storage format */
205 unsigned short redx, redy;
206 unsigned short greenx, greeny;
207 unsigned short bluex, bluey;
208 unsigned short whitex, whitey;
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;
215 /* White point indices FIXME: storage format */
216 unsigned int wpx1, wpy1;
217 unsigned int wpgamma1;
218 unsigned int wpx2, wpy2;
219 unsigned int wpgamma2;
221 /* Preferred mode (if any) */
222 struct drm_display_mode *preferred_mode;
223 char *raw_edid; /* if any */
226 struct drm_framebuffer {
227 struct drm_device *dev;
228 struct list_head head;
229 int id; /* idr assigned */
231 unsigned long offset;
234 /* depth can be 15 or 16 */
238 struct drm_buffer_object *bo;
240 u32 pseudo_palette[17];
242 struct list_head filp_head;
248 * drm_crtc_funcs - control CRTCs for a given device
249 * @dpms: control display power levels
250 * @save: save CRTC state
251 * @resore: restore CRTC state
252 * @lock: lock the CRTC
253 * @unlock: unlock the CRTC
254 * @shadow_allocate: allocate shadow pixmap
255 * @shadow_create: create shadow pixmap for rotation support
256 * @shadow_destroy: free shadow pixmap
257 * @mode_fixup: fixup proposed mode
258 * @mode_set: set the desired mode on the CRTC
259 * @gamma_set: specify color ramp for CRTC
260 * @cleanup: cleanup driver private state prior to close
262 * The drm_crtc_funcs structure is the central CRTC management structure
263 * in the DRM. Each CRTC controls one or more outputs (note that the name
264 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
265 * outputs, not just CRTs).
267 * Each driver is responsible for filling out this structure at startup time,
268 * in addition to providing other modesetting features, like i2c and DDC
271 struct drm_crtc_funcs {
273 * Control power levels on the CRTC. If the mode passed in is
274 * unsupported, the provider must use the next lowest power level.
276 void (*dpms)(struct drm_crtc *crtc, int mode);
278 /* JJJ: Are these needed? */
279 /* Save CRTC state */
280 void (*save)(struct drm_crtc *crtc); /* suspend? */
281 /* Restore CRTC state */
282 void (*restore)(struct drm_crtc *crtc); /* resume? */
283 bool (*lock)(struct drm_crtc *crtc);
284 void (*unlock)(struct drm_crtc *crtc);
286 void (*prepare)(struct drm_crtc *crtc);
287 void (*commit)(struct drm_crtc *crtc);
289 /* Provider can fixup or change mode timings before modeset occurs */
290 bool (*mode_fixup)(struct drm_crtc *crtc,
291 struct drm_display_mode *mode,
292 struct drm_display_mode *adjusted_mode);
293 /* Actually set the mode */
294 void (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
295 struct drm_display_mode *adjusted_mode, int x, int y);
296 /* Set gamma on the CRTC */
297 void (*gamma_set)(struct drm_crtc *crtc, u16 r, u16 g, u16 b,
299 /* Driver cleanup routine */
300 void (*cleanup)(struct drm_crtc *crtc);
304 * drm_crtc - central CRTC control structure
305 * @enabled: is this CRTC enabled?
306 * @x: x position on screen
307 * @y: y position on screen
308 * @desired_mode: new desired mode
309 * @desired_x: desired x for desired_mode
310 * @desired_y: desired y for desired_mode
311 * @funcs: CRTC control functions
312 * @driver_private: arbitrary driver data
314 * Each CRTC may have one or more outputs associated with it. This structure
315 * allows the CRTC to be controlled.
318 struct drm_device *dev;
319 struct list_head head;
321 int id; /* idr assigned */
323 /* framebuffer the output is currently bound to */
324 struct drm_framebuffer *fb;
328 /* JJJ: are these needed? */
329 bool cursor_in_range;
332 struct drm_display_mode mode;
335 struct drm_display_mode *desired_mode;
336 int desired_x, desired_y;
337 const struct drm_crtc_funcs *funcs;
338 void *driver_private;
340 /* RRCrtcPtr randr_crtc? */
343 extern struct drm_crtc *drm_crtc_create(struct drm_device *dev,
344 const struct drm_crtc_funcs *funcs);
347 * drm_output_funcs - control outputs on a given device
348 * @init: setup this output
349 * @dpms: set power state (see drm_crtc_funcs above)
350 * @save: save output state
351 * @restore: restore output state
352 * @mode_valid: is this mode valid on the given output?
353 * @mode_fixup: try to fixup proposed mode for this output
354 * @mode_set: set this mode
355 * @detect: is this output active?
356 * @get_modes: get mode list for this output
357 * @set_property: property for this output may need update
358 * @cleanup: output is going away, cleanup
360 * Each CRTC may have one or more outputs attached to it. The functions
361 * below allow the core DRM code to control outputs, enumerate available modes,
364 struct drm_output_funcs {
365 void (*init)(struct drm_output *output);
366 void (*dpms)(struct drm_output *output, int mode);
367 void (*save)(struct drm_output *output);
368 void (*restore)(struct drm_output *output);
369 int (*mode_valid)(struct drm_output *output,
370 struct drm_display_mode *mode);
371 bool (*mode_fixup)(struct drm_output *output,
372 struct drm_display_mode *mode,
373 struct drm_display_mode *adjusted_mode);
374 void (*prepare)(struct drm_output *output);
375 void (*commit)(struct drm_output *output);
376 void (*mode_set)(struct drm_output *output,
377 struct drm_display_mode *mode,
378 struct drm_display_mode *adjusted_mode);
379 enum drm_output_status (*detect)(struct drm_output *output);
380 int (*get_modes)(struct drm_output *output);
381 /* JJJ: type checking for properties via property value type */
382 bool (*set_property)(struct drm_output *output, int prop, void *val);
383 void (*cleanup)(struct drm_output *output);
386 #define DRM_OUTPUT_MAX_UMODES 16
387 #define DRM_OUTPUT_LEN 32
389 * drm_output - central DRM output control structure
390 * @crtc: CRTC this output is currently connected to, NULL if none
391 * @possible_crtcs: bitmap of CRTCS this output could be attached to
392 * @possible_clones: bitmap of possible outputs this output could clone
393 * @interlace_allowed: can this output handle interlaced modes?
394 * @doublescan_allowed: can this output handle doublescan?
395 * @available_modes: modes available on this output (from get_modes() + user)
396 * @initial_x: initial x position for this output
397 * @initial_y: initial y position for this output
398 * @status: output connected?
399 * @subpixel_order: for this output
400 * @mm_width: displayable width of output in mm
401 * @mm_height: displayable height of output in mm
402 * @name: name of output (should be one of a few standard names)
403 * @funcs: output control functions
404 * @driver_private: private driver data
406 * Each output may be connected to one or more CRTCs, or may be clonable by
407 * another output if they can share a CRTC. Each output also has a specific
408 * position in the broader display (referred to as a 'screen' though it could
409 * span multiple monitors).
412 struct drm_device *dev;
413 struct list_head head;
414 struct drm_crtc *crtc;
415 int id; /* idr assigned */
416 unsigned long possible_crtcs;
417 unsigned long possible_clones;
418 bool interlace_allowed;
419 bool doublescan_allowed;
420 struct list_head modes; /* list of modes on this output */
423 OptionInfoPtr options;
424 XF86ConfMonitorPtr conf_monitor;
426 int initial_x, initial_y;
427 enum drm_output_status status;
429 /* these are modes added by probing with DDC or the BIOS */
430 struct list_head probed_modes;
432 /* xf86MonPtr MonInfo; */
433 enum subpixel_order subpixel_order;
434 int mm_width, mm_height;
435 struct drm_display_info *monitor_info; /* if any */
436 char name[DRM_OUTPUT_LEN];
437 const struct drm_output_funcs *funcs;
438 void *driver_private;
440 u32 user_mode_ids[DRM_OUTPUT_MAX_UMODES];
445 * struct drm_mode_config_funcs - configure CRTCs for a given screen layout
446 * @resize: adjust CRTCs as necessary for the proposed layout
448 * Currently only a resize hook is available. DRM will call back into the
449 * driver with a new screen width and height. If the driver can't support
450 * the proposed size, it can return false. Otherwise it should adjust
451 * the CRTC<->output mappings as needed and update its view of the screen.
453 struct drm_mode_config_funcs {
454 bool (*resize)(struct drm_device *dev, int width, int height);
458 * drm_mode_config - Mode configuration control structure
461 struct drm_mode_config {
462 struct mutex mutex; /* protects configuration and IDR */
463 struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, output, modes - just makes life easier */
464 /* this is limited to one for now */
466 struct list_head fb_list;
468 struct list_head output_list;
470 /* int compat_output? */
472 struct list_head crtc_list;
474 struct list_head usermode_list;
475 int min_width, min_height;
476 int max_width, max_height;
477 /* DamagePtr rotationDamage? */
479 struct drm_mode_config_funcs *funcs;
480 unsigned long fb_base;
483 struct drm_output *drm_output_create(struct drm_device *dev,
484 const struct drm_output_funcs *funcs,
486 extern void drm_output_destroy(struct drm_output *output);
487 extern bool drm_output_rename(struct drm_output *output, const char *name);
488 extern void drm_fb_release(struct file *filp);
490 extern int drm_add_edid_modes(struct drm_output *output,
491 struct i2c_adapter *adapter);
492 extern void drm_mode_probed_add(struct drm_output *output, struct drm_display_mode *mode);
493 extern void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode);
494 extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
495 struct drm_display_mode *mode);
496 extern void drm_mode_debug_printmodeline(struct drm_device *dev,
497 struct drm_display_mode *mode);
498 extern void drm_mode_config_init(struct drm_device *dev);
499 extern void drm_mode_config_cleanup(struct drm_device *dev);
500 extern void drm_mode_set_name(struct drm_display_mode *mode);
501 extern bool drm_mode_equal(struct drm_display_mode *mode1, struct drm_display_mode *mode2);
502 extern void drm_disable_unused_functions(struct drm_device *dev);
504 extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
505 extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
506 extern void drm_mode_list_concat(struct list_head *head,
507 struct list_head *new);
508 extern void drm_mode_validate_size(struct drm_device *dev,
509 struct list_head *mode_list,
510 int maxX, int maxY, int maxPitch);
511 extern void drm_mode_prune_invalid(struct drm_device *dev,
512 struct list_head *mode_list, bool verbose);
513 extern void drm_mode_sort(struct list_head *mode_list);
514 extern int drm_mode_vrefresh(struct drm_display_mode *mode);
515 extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
517 extern void drm_mode_output_list_update(struct drm_output *output);
519 extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
520 extern bool drm_initial_config(struct drm_device *dev, bool cangrow);
521 extern void drm_framebuffer_set_object(struct drm_device *dev,
522 unsigned long handle);
523 extern struct drm_framebuffer *drm_framebuffer_create(struct drm_device *dev);
524 extern void drm_framebuffer_destroy(struct drm_framebuffer *fb);
525 extern int drmfb_probe(struct drm_device *dev, struct drm_crtc *crtc);
526 extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
527 extern bool drm_crtc_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
531 extern int drm_mode_getresources(struct drm_device *dev,
532 void *data, struct drm_file *file_priv);
534 extern int drm_mode_getcrtc(struct drm_device *dev,
535 void *data, struct drm_file *file_priv);
536 extern int drm_mode_getoutput(struct drm_device *dev,
537 void *data, struct drm_file *file_priv);
538 extern int drm_mode_setcrtc(struct drm_device *dev,
539 void *data, struct drm_file *file_priv);
540 extern int drm_mode_addfb(struct drm_device *dev,
541 void *data, struct drm_file *file_priv);
542 extern int drm_mode_rmfb(struct drm_device *dev,
543 void *data, struct drm_file *file_priv);
544 extern int drm_mode_getfb(struct drm_device *dev,
545 void *data, struct drm_file *file_priv);
546 extern int drm_mode_addmode(struct drm_device *dev,
547 void *data, struct drm_file *file_priv);
548 extern int drm_mode_rmmode(struct drm_device *dev,
549 void *data, struct drm_file *file_priv);
550 extern int drm_mode_attachmode(struct drm_device *dev,
551 void *data, struct drm_file *file_priv);
552 extern int drm_mode_detachmode(struct drm_device *dev,
553 void *data, struct drm_file *file_priv);
555 #endif /* __DRM_CRTC_H__ */