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];
90 enum drm_mode_status status;
93 /* Proposed mode values */
107 /* Actual mode we give to hw */
111 int crtc_hblank_start;
113 int crtc_hsync_start;
118 int crtc_vblank_start;
120 int crtc_vsync_start;
126 /* Driver private mode info */
135 /* Video mode flags */
136 #define V_PHSYNC (1<<0)
137 #define V_NHSYNC (1<<1)
138 #define V_PVSYNC (1<<2)
139 #define V_NVSYNC (1<<3)
140 #define V_INTERLACE (1<<4)
141 #define V_DBLSCAN (1<<5)
142 #define V_CSYNC (1<<6)
143 #define V_PCSYNC (1<<7)
144 #define V_NCSYNC (1<<8)
145 #define V_HSKEW (1<<9) /* hskew provided */
146 #define V_BCAST (1<<10)
147 #define V_PIXMUX (1<<11)
148 #define V_DBLCLK (1<<12)
149 #define V_CLKDIV2 (1<<13)
151 #define CRTC_INTERLACE_HALVE_V 0x1 /* halve V values for interlacing */
153 #define DPMSModeStandby 1
154 #define DPMSModeSuspend 2
155 #define DPMSModeOff 3
157 enum drm_output_status {
158 output_status_connected,
159 output_status_disconnected,
160 output_status_unknown,
163 enum subpixel_order {
165 SubPixelHorizontalRGB,
166 SubPixelHorizontalBGR,
173 * Describes a given display (e.g. CRT or flat panel) and its limitations.
175 struct drm_display_info {
176 char name[DRM_DISPLAY_INFO_LEN];
178 bool serration_vsync;
183 unsigned char video_level;
186 unsigned int width_mm;
187 unsigned int height_mm;
189 /* Display parameters */
190 unsigned char gamma; /* FIXME: storage format */
199 bool active_off_supported;
200 bool suspend_supported;
201 bool standby_supported;
203 /* Color info FIXME: storage format */
204 unsigned short redx, redy;
205 unsigned short greenx, greeny;
206 unsigned short bluex, bluey;
207 unsigned short whitex, whitey;
209 /* Clock limits FIXME: storage format */
210 unsigned int min_vfreq, max_vfreq;
211 unsigned int min_hfreq, max_hfreq;
212 unsigned int pixel_clock;
214 /* White point indices FIXME: storage format */
215 unsigned int wpx1, wpy1;
216 unsigned int wpgamma1;
217 unsigned int wpx2, wpy2;
218 unsigned int wpgamma2;
220 /* Preferred mode (if any) */
221 struct drm_display_mode *preferred_mode;
222 char *raw_edid; /* if any */
225 struct drm_framebuffer {
226 struct drm_device *dev;
227 struct list_head head;
228 int id; /* idr assigned */
230 unsigned long offset;
233 /* depth can be 15 or 16 */
237 struct drm_buffer_object *bo;
239 u32 pseudo_palette[17];
241 struct list_head filp_head;
247 * drm_crtc_funcs - control CRTCs for a given device
248 * @dpms: control display power levels
249 * @save: save CRTC state
250 * @resore: restore CRTC state
251 * @lock: lock the CRTC
252 * @unlock: unlock the CRTC
253 * @shadow_allocate: allocate shadow pixmap
254 * @shadow_create: create shadow pixmap for rotation support
255 * @shadow_destroy: free shadow pixmap
256 * @mode_fixup: fixup proposed mode
257 * @mode_set: set the desired mode on the CRTC
258 * @gamma_set: specify color ramp for CRTC
259 * @cleanup: cleanup driver private state prior to close
261 * The drm_crtc_funcs structure is the central CRTC management structure
262 * in the DRM. Each CRTC controls one or more outputs (note that the name
263 * CRTC is simply historical, a CRTC may control LVDS, VGA, DVI, TV out, etc.
264 * outputs, not just CRTs).
266 * Each driver is responsible for filling out this structure at startup time,
267 * in addition to providing other modesetting features, like i2c and DDC
270 struct drm_crtc_funcs {
272 * Control power levels on the CRTC. If the mode passed in is
273 * unsupported, the provider must use the next lowest power level.
275 void (*dpms)(struct drm_crtc *crtc, int mode);
277 /* JJJ: Are these needed? */
278 /* Save CRTC state */
279 void (*save)(struct drm_crtc *crtc); /* suspend? */
280 /* Restore CRTC state */
281 void (*restore)(struct drm_crtc *crtc); /* resume? */
282 bool (*lock)(struct drm_crtc *crtc);
283 void (*unlock)(struct drm_crtc *crtc);
285 void (*prepare)(struct drm_crtc *crtc);
286 void (*commit)(struct drm_crtc *crtc);
288 /* Provider can fixup or change mode timings before modeset occurs */
289 bool (*mode_fixup)(struct drm_crtc *crtc,
290 struct drm_display_mode *mode,
291 struct drm_display_mode *adjusted_mode);
292 /* Actually set the mode */
293 void (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
294 struct drm_display_mode *adjusted_mode, int x, int y);
295 /* Set gamma on the CRTC */
296 void (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
298 /* Driver cleanup routine */
299 void (*cleanup)(struct drm_crtc *crtc);
303 * drm_crtc - central CRTC control structure
304 * @enabled: is this CRTC enabled?
305 * @x: x position on screen
306 * @y: y position on screen
307 * @desired_mode: new desired mode
308 * @desired_x: desired x for desired_mode
309 * @desired_y: desired y for desired_mode
310 * @funcs: CRTC control functions
311 * @driver_private: arbitrary driver data
313 * Each CRTC may have one or more outputs associated with it. This structure
314 * allows the CRTC to be controlled.
317 struct drm_device *dev;
318 struct list_head head;
320 int id; /* idr assigned */
322 /* framebuffer the CRTC is currently bound to */
323 struct drm_framebuffer *fb;
327 /* JJJ: are these needed? */
328 bool cursor_in_range;
331 struct drm_display_mode mode;
334 struct drm_display_mode *desired_mode;
335 int desired_x, desired_y;
336 const struct drm_crtc_funcs *funcs;
337 void *driver_private;
339 /* RRCrtcPtr randr_crtc? */
342 extern struct drm_crtc *drm_crtc_create(struct drm_device *dev,
343 const struct drm_crtc_funcs *funcs);
346 * drm_output_funcs - control outputs on a given device
347 * @init: setup this output
348 * @dpms: set power state (see drm_crtc_funcs above)
349 * @save: save output state
350 * @restore: restore output state
351 * @mode_valid: is this mode valid on the given output?
352 * @mode_fixup: try to fixup proposed mode for this output
353 * @mode_set: set this mode
354 * @detect: is this output active?
355 * @get_modes: get mode list for this output
356 * @set_property: property for this output may need update
357 * @cleanup: output is going away, cleanup
359 * Each CRTC may have one or more outputs attached to it. The functions
360 * below allow the core DRM code to control outputs, enumerate available modes,
363 struct drm_output_funcs {
364 void (*init)(struct drm_output *output);
365 void (*dpms)(struct drm_output *output, int mode);
366 void (*save)(struct drm_output *output);
367 void (*restore)(struct drm_output *output);
368 int (*mode_valid)(struct drm_output *output,
369 struct drm_display_mode *mode);
370 bool (*mode_fixup)(struct drm_output *output,
371 struct drm_display_mode *mode,
372 struct drm_display_mode *adjusted_mode);
373 void (*prepare)(struct drm_output *output);
374 void (*commit)(struct drm_output *output);
375 void (*mode_set)(struct drm_output *output,
376 struct drm_display_mode *mode,
377 struct drm_display_mode *adjusted_mode);
378 enum drm_output_status (*detect)(struct drm_output *output);
379 int (*get_modes)(struct drm_output *output);
380 /* JJJ: type checking for properties via property value type */
381 bool (*set_property)(struct drm_output *output, int prop, void *val);
382 void (*cleanup)(struct drm_output *output);
385 #define DRM_OUTPUT_LEN 32
387 * drm_output - central DRM output control structure
388 * @crtc: CRTC this output is currently connected to, NULL if none
389 * @possible_crtcs: bitmap of CRTCS this output could be attached to
390 * @possible_clones: bitmap of possible outputs this output could clone
391 * @interlace_allowed: can this output handle interlaced modes?
392 * @doublescan_allowed: can this output handle doublescan?
393 * @available_modes: modes available on this output (from get_modes() + user)
394 * @initial_x: initial x position for this output
395 * @initial_y: initial y position for this output
396 * @status: output connected?
397 * @subpixel_order: for this output
398 * @mm_width: displayable width of output in mm
399 * @mm_height: displayable height of output in mm
400 * @name: name of output (should be one of a few standard names)
401 * @funcs: output control functions
402 * @driver_private: private driver data
404 * Each output may be connected to one or more CRTCs, or may be clonable by
405 * another output if they can share a CRTC. Each output also has a specific
406 * position in the broader display (referred to as a 'screen' though it could
407 * span multiple monitors).
410 struct drm_device *dev;
411 struct list_head head;
412 struct drm_crtc *crtc;
413 int id; /* idr assigned */
414 unsigned long possible_crtcs;
415 unsigned long possible_clones;
416 bool interlace_allowed;
417 bool doublescan_allowed;
418 spinlock_t modes_lock; /* protects modes and probed_modes lists */
419 struct list_head modes; /* list of modes on this output */
421 OptionInfoPtr options;
422 XF86ConfMonitorPtr conf_monitor;
424 int initial_x, initial_y;
425 enum drm_output_status status;
427 /* these are modes added by probing with DDC or the BIOS */
428 struct list_head probed_modes;
430 /* xf86MonPtr MonInfo; */
431 enum subpixel_order subpixel_order;
432 int mm_width, mm_height;
433 struct drm_display_info *monitor_info; /* if any */
434 char name[DRM_OUTPUT_LEN];
435 const struct drm_output_funcs *funcs;
436 void *driver_private;
437 /* RROutputPtr randr_output? */
441 * struct drm_mode_config_funcs - configure CRTCs for a given screen layout
442 * @resize: adjust CRTCs as necessary for the proposed layout
444 * Currently only a resize hook is available. DRM will call back into the
445 * driver with a new screen width and height. If the driver can't support
446 * the proposed size, it can return false. Otherwise it should adjust
447 * the CRTC<->output mappings as needed and update its view of the screen.
449 struct drm_mode_config_funcs {
450 bool (*resize)(struct drm_device *dev, int width, int height);
454 * drm_mode_config - Mode configuration control structure
457 struct drm_mode_config {
458 spinlock_t config_lock; /* protects configuration and IDR */
459 struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, output, modes - just makes life easier */
460 /* this is limited to one for now */
462 struct list_head fb_list;
464 struct list_head output_list;
466 /* int compat_output? */
468 struct list_head crtc_list;
470 int min_width, min_height;
471 int max_width, max_height;
472 /* DamagePtr rotationDamage? */
474 struct drm_mode_config_funcs *funcs;
475 unsigned long fb_base;
478 struct drm_output *drm_output_create(struct drm_device *dev,
479 const struct drm_output_funcs *funcs,
481 extern void drm_output_destroy(struct drm_output *output);
482 extern bool drm_output_rename(struct drm_output *output, const char *name);
484 extern int drm_add_edid_modes(struct drm_output *output,
485 struct i2c_adapter *adapter);
486 extern void drm_mode_probed_add(struct drm_output *output, struct drm_display_mode *mode);
487 extern void drm_mode_remove(struct drm_output *output, struct drm_display_mode *mode);
488 extern struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
489 struct drm_display_mode *mode);
490 extern void drm_mode_debug_printmodeline(struct drm_device *dev,
491 struct drm_display_mode *mode);
492 extern void drm_mode_config_init(struct drm_device *dev);
493 extern void drm_mode_config_cleanup(struct drm_device *dev);
494 extern void drm_mode_set_name(struct drm_display_mode *mode);
495 extern void drm_disable_unused_functions(struct drm_device *dev);
497 extern struct drm_display_mode *drm_mode_create(struct drm_device *dev);
498 extern void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode);
499 extern void drm_mode_list_concat(struct list_head *head,
500 struct list_head *new);
501 extern void drm_mode_validate_size(struct drm_device *dev,
502 struct list_head *mode_list,
503 int maxX, int maxY, int maxPitch);
504 extern void drm_mode_prune_invalid(struct drm_device *dev,
505 struct list_head *mode_list, bool verbose);
506 extern void drm_mode_sort(struct list_head *mode_list);
507 extern int drm_mode_vrefresh(struct drm_display_mode *mode);
508 extern void drm_mode_set_crtcinfo(struct drm_display_mode *p,
510 extern struct drm_display_mode *drm_crtc_mode_create(struct drm_device *dev);
511 extern bool drm_initial_config(struct drm_device *dev, bool cangrow);
512 extern void drm_framebuffer_set_object(struct drm_device *dev,
513 unsigned long handle);
514 extern bool drm_set_desired_modes(struct drm_device *dev);
515 extern int drmfb_probe(struct drm_device *dev, struct drm_framebuffer *fb);
516 extern int drmfb_remove(struct drm_device *dev, struct drm_framebuffer *fb);
519 extern int drm_mode_getresources(struct inode *inode, struct file *filp,
520 unsigned int cmd, unsigned long arg);
522 extern int drm_mode_getcrtc(struct inode *inode, struct file *filp,
523 unsigned int cmd, unsigned long arg);
524 extern int drm_mode_getoutput(struct inode *inode, struct file *filp,
525 unsigned int cmd, unsigned long arg);
526 extern int drm_mode_setcrtc(struct inode *inode, struct file *filp,
527 unsigned int cmd, unsigned long arg);
528 extern int drm_mode_addfb(struct inode *inode, struct file *filp,
529 unsigned int cmd, unsigned long arg);
530 extern int drm_mode_rmfb(struct inode *inode, struct file *filp,
531 unsigned int cmd, unsigned long arg);
532 extern int drm_mode_getfb(struct inode *inode, struct file *filp,
533 unsigned int cmd, unsigned long arg);
534 #endif /* __DRM_CRTC_H__ */