blob: 04fa6f1808d151249f38fdf2974ee365eac7a047 [file] [log] [blame]
Dave Airlief453ba02008-11-07 14:05:41 -08001/*
Dave Airlief453ba02008-11-07 14:05:41 -08002 * Copyright © 1997-2003 by The XFree86 Project, Inc.
3 * Copyright © 2007 Dave Airlie
4 * Copyright © 2007-2008 Intel Corporation
5 * Jesse Barnes <jesse.barnes@intel.com>
Zhao Yakuid782c3f2009-06-22 13:17:08 +08006 * Copyright 2005-2006 Luc Verhaegen
Zhao Yakui26bbdad2009-06-22 13:17:09 +08007 * Copyright (c) 2001, Andy Ritger aritger@nvidia.com
Dave Airlief453ba02008-11-07 14:05:41 -08008 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * Except as contained in this notice, the name of the copyright holder(s)
28 * and author(s) shall not be used in advertising or otherwise to promote
29 * the sale, use or other dealings in this Software without prior written
30 * authorization from the copyright holder(s) and author(s).
31 */
32
33#include <linux/list.h>
Dave Chinner2c761272010-01-12 17:39:16 +110034#include <linux/list_sort.h>
Paul Gortmaker2d1a8a42011-08-30 18:16:33 -040035#include <linux/export.h>
David Howells760285e2012-10-02 18:01:07 +010036#include <drm/drmP.h>
37#include <drm/drm_crtc.h>
Steffen Trumtraredb37a92012-10-28 18:28:06 +010038#include <video/of_videomode.h>
Steffen Trumtrarebc64e42012-11-14 11:22:52 +010039#include <video/videomode.h>
Dave Airlief453ba02008-11-07 14:05:41 -080040
41/**
42 * drm_mode_debug_printmodeline - debug print a mode
43 * @dev: DRM device
44 * @mode: mode to print
45 *
46 * LOCKING:
47 * None.
48 *
49 * Describe @mode using DRM_DEBUG.
50 */
Ville Syrjälä0b3904a2012-10-25 18:05:05 +000051void drm_mode_debug_printmodeline(const struct drm_display_mode *mode)
Dave Airlief453ba02008-11-07 14:05:41 -080052{
Zhao Yakuif940f372009-07-20 13:48:05 +080053 DRM_DEBUG_KMS("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d "
Zhao Yakui8a4c47f2009-07-20 13:48:04 +080054 "0x%x 0x%x\n",
yakui_zhaof0531852009-06-02 14:12:47 +080055 mode->base.id, mode->name, mode->vrefresh, mode->clock,
56 mode->hdisplay, mode->hsync_start,
57 mode->hsync_end, mode->htotal,
58 mode->vdisplay, mode->vsync_start,
59 mode->vsync_end, mode->vtotal, mode->type, mode->flags);
Dave Airlief453ba02008-11-07 14:05:41 -080060}
61EXPORT_SYMBOL(drm_mode_debug_printmodeline);
62
63/**
Zhao Yakuid782c3f2009-06-22 13:17:08 +080064 * drm_cvt_mode -create a modeline based on CVT algorithm
65 * @dev: DRM device
66 * @hdisplay: hdisplay size
67 * @vdisplay: vdisplay size
68 * @vrefresh : vrefresh rate
69 * @reduced : Whether the GTF calculation is simplified
70 * @interlaced:Whether the interlace is supported
71 *
72 * LOCKING:
73 * none.
74 *
75 * return the modeline based on CVT algorithm
76 *
77 * This function is called to generate the modeline based on CVT algorithm
78 * according to the hdisplay, vdisplay, vrefresh.
79 * It is based from the VESA(TM) Coordinated Video Timing Generator by
80 * Graham Loveridge April 9, 2003 available at
Justin P. Mattock631dd1a2010-10-18 11:03:14 +020081 * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls
Zhao Yakuid782c3f2009-06-22 13:17:08 +080082 *
83 * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c.
84 * What I have done is to translate it by using integer calculation.
85 */
86#define HV_FACTOR 1000
87struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay,
88 int vdisplay, int vrefresh,
Dave Airlied50ba252009-09-23 14:44:08 +100089 bool reduced, bool interlaced, bool margins)
Zhao Yakuid782c3f2009-06-22 13:17:08 +080090{
91 /* 1) top/bottom margin size (% of height) - default: 1.8, */
92#define CVT_MARGIN_PERCENTAGE 18
93 /* 2) character cell horizontal granularity (pixels) - default 8 */
94#define CVT_H_GRANULARITY 8
95 /* 3) Minimum vertical porch (lines) - default 3 */
96#define CVT_MIN_V_PORCH 3
97 /* 4) Minimum number of vertical back porch lines - default 6 */
98#define CVT_MIN_V_BPORCH 6
99 /* Pixel Clock step (kHz) */
100#define CVT_CLOCK_STEP 250
101 struct drm_display_mode *drm_mode;
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800102 unsigned int vfieldrate, hperiod;
103 int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync;
104 int interlace;
105
106 /* allocate the drm_display_mode structure. If failure, we will
107 * return directly
108 */
109 drm_mode = drm_mode_create(dev);
110 if (!drm_mode)
111 return NULL;
112
113 /* the CVT default refresh rate is 60Hz */
114 if (!vrefresh)
115 vrefresh = 60;
116
117 /* the required field fresh rate */
118 if (interlaced)
119 vfieldrate = vrefresh * 2;
120 else
121 vfieldrate = vrefresh;
122
123 /* horizontal pixels */
124 hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY);
125
126 /* determine the left&right borders */
127 hmargin = 0;
128 if (margins) {
129 hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000;
130 hmargin -= hmargin % CVT_H_GRANULARITY;
131 }
132 /* find the total active pixels */
133 drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin;
134
135 /* find the number of lines per field */
136 if (interlaced)
137 vdisplay_rnd = vdisplay / 2;
138 else
139 vdisplay_rnd = vdisplay;
140
141 /* find the top & bottom borders */
142 vmargin = 0;
143 if (margins)
144 vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000;
145
Francisco Jerez841b4112009-08-12 02:30:09 +0200146 drm_mode->vdisplay = vdisplay + 2 * vmargin;
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800147
148 /* Interlaced */
149 if (interlaced)
150 interlace = 1;
151 else
152 interlace = 0;
153
154 /* Determine VSync Width from aspect ratio */
155 if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay))
156 vsync = 4;
157 else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay))
158 vsync = 5;
159 else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay))
160 vsync = 6;
161 else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay))
162 vsync = 7;
163 else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay))
164 vsync = 7;
165 else /* custom */
166 vsync = 10;
167
168 if (!reduced) {
169 /* simplify the GTF calculation */
170 /* 4) Minimum time of vertical sync + back porch interval (µs)
171 * default 550.0
172 */
173 int tmp1, tmp2;
174#define CVT_MIN_VSYNC_BP 550
175 /* 3) Nominal HSync width (% of line period) - default 8 */
176#define CVT_HSYNC_PERCENTAGE 8
177 unsigned int hblank_percentage;
178 int vsyncandback_porch, vback_porch, hblank;
179
180 /* estimated the horizontal period */
181 tmp1 = HV_FACTOR * 1000000 -
182 CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate;
183 tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 +
184 interlace;
185 hperiod = tmp1 * 2 / (tmp2 * vfieldrate);
186
187 tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1;
188 /* 9. Find number of lines in sync + backporch */
189 if (tmp1 < (vsync + CVT_MIN_V_PORCH))
190 vsyncandback_porch = vsync + CVT_MIN_V_PORCH;
191 else
192 vsyncandback_porch = tmp1;
193 /* 10. Find number of lines in back porch */
194 vback_porch = vsyncandback_porch - vsync;
195 drm_mode->vtotal = vdisplay_rnd + 2 * vmargin +
196 vsyncandback_porch + CVT_MIN_V_PORCH;
197 /* 5) Definition of Horizontal blanking time limitation */
198 /* Gradient (%/kHz) - default 600 */
199#define CVT_M_FACTOR 600
200 /* Offset (%) - default 40 */
201#define CVT_C_FACTOR 40
202 /* Blanking time scaling factor - default 128 */
203#define CVT_K_FACTOR 128
204 /* Scaling factor weighting - default 20 */
205#define CVT_J_FACTOR 20
206#define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256)
207#define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \
208 CVT_J_FACTOR)
209 /* 12. Find ideal blanking duty cycle from formula */
210 hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME *
211 hperiod / 1000;
212 /* 13. Blanking time */
213 if (hblank_percentage < 20 * HV_FACTOR)
214 hblank_percentage = 20 * HV_FACTOR;
215 hblank = drm_mode->hdisplay * hblank_percentage /
216 (100 * HV_FACTOR - hblank_percentage);
217 hblank -= hblank % (2 * CVT_H_GRANULARITY);
218 /* 14. find the total pixes per line */
219 drm_mode->htotal = drm_mode->hdisplay + hblank;
220 drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2;
221 drm_mode->hsync_start = drm_mode->hsync_end -
222 (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100;
223 drm_mode->hsync_start += CVT_H_GRANULARITY -
224 drm_mode->hsync_start % CVT_H_GRANULARITY;
225 /* fill the Vsync values */
226 drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH;
227 drm_mode->vsync_end = drm_mode->vsync_start + vsync;
228 } else {
229 /* Reduced blanking */
230 /* Minimum vertical blanking interval time (µs)- default 460 */
231#define CVT_RB_MIN_VBLANK 460
232 /* Fixed number of clocks for horizontal sync */
233#define CVT_RB_H_SYNC 32
234 /* Fixed number of clocks for horizontal blanking */
235#define CVT_RB_H_BLANK 160
236 /* Fixed number of lines for vertical front porch - default 3*/
237#define CVT_RB_VFPORCH 3
238 int vbilines;
239 int tmp1, tmp2;
240 /* 8. Estimate Horizontal period. */
241 tmp1 = HV_FACTOR * 1000000 -
242 CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate;
243 tmp2 = vdisplay_rnd + 2 * vmargin;
244 hperiod = tmp1 / (tmp2 * vfieldrate);
245 /* 9. Find number of lines in vertical blanking */
246 vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1;
247 /* 10. Check if vertical blanking is sufficient */
248 if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH))
249 vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH;
250 /* 11. Find total number of lines in vertical field */
251 drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines;
252 /* 12. Find total number of pixels in a line */
253 drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK;
254 /* Fill in HSync values */
255 drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2;
Adam Jacksonadde0f22010-08-23 10:19:14 -0400256 drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC;
257 /* Fill in VSync values */
258 drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH;
259 drm_mode->vsync_end = drm_mode->vsync_start + vsync;
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800260 }
261 /* 15/13. Find pixel clock frequency (kHz for xf86) */
262 drm_mode->clock = drm_mode->htotal * HV_FACTOR * 1000 / hperiod;
263 drm_mode->clock -= drm_mode->clock % CVT_CLOCK_STEP;
264 /* 18/16. Find actual vertical frame frequency */
265 /* ignore - just set the mode flag for interlaced */
Adam Jackson171fdd82010-03-29 21:43:31 +0000266 if (interlaced) {
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800267 drm_mode->vtotal *= 2;
Adam Jackson171fdd82010-03-29 21:43:31 +0000268 drm_mode->flags |= DRM_MODE_FLAG_INTERLACE;
269 }
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800270 /* Fill the mode line name */
271 drm_mode_set_name(drm_mode);
272 if (reduced)
273 drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC |
274 DRM_MODE_FLAG_NVSYNC);
275 else
276 drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC |
277 DRM_MODE_FLAG_NHSYNC);
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800278
Adam Jackson171fdd82010-03-29 21:43:31 +0000279 return drm_mode;
Zhao Yakuid782c3f2009-06-22 13:17:08 +0800280}
281EXPORT_SYMBOL(drm_cvt_mode);
282
283/**
Adam Jackson7a374352010-03-29 21:43:30 +0000284 * drm_gtf_mode_complex - create the modeline based on full GTF algorithm
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800285 *
286 * @dev :drm device
287 * @hdisplay :hdisplay size
288 * @vdisplay :vdisplay size
289 * @vrefresh :vrefresh rate.
290 * @interlaced :whether the interlace is supported
Adam Jackson7a374352010-03-29 21:43:30 +0000291 * @margins :desired margin size
292 * @GTF_[MCKJ] :extended GTF formula parameters
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800293 *
294 * LOCKING.
295 * none.
296 *
Adam Jackson7a374352010-03-29 21:43:30 +0000297 * return the modeline based on full GTF algorithm.
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800298 *
Adam Jackson7a374352010-03-29 21:43:30 +0000299 * GTF feature blocks specify C and J in multiples of 0.5, so we pass them
300 * in here multiplied by two. For a C of 40, pass in 80.
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800301 */
Adam Jackson7a374352010-03-29 21:43:30 +0000302struct drm_display_mode *
303drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay,
304 int vrefresh, bool interlaced, int margins,
305 int GTF_M, int GTF_2C, int GTF_K, int GTF_2J)
306{ /* 1) top/bottom margin size (% of height) - default: 1.8, */
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800307#define GTF_MARGIN_PERCENTAGE 18
308 /* 2) character cell horizontal granularity (pixels) - default 8 */
309#define GTF_CELL_GRAN 8
310 /* 3) Minimum vertical porch (lines) - default 3 */
311#define GTF_MIN_V_PORCH 1
312 /* width of vsync in lines */
313#define V_SYNC_RQD 3
314 /* width of hsync as % of total line */
315#define H_SYNC_PERCENT 8
316 /* min time of vsync + back porch (microsec) */
317#define MIN_VSYNC_PLUS_BP 550
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800318 /* C' and M' are part of the Blanking Duty Cycle computation */
Adam Jackson7a374352010-03-29 21:43:30 +0000319#define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2)
320#define GTF_M_PRIME (GTF_K * GTF_M / 256)
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800321 struct drm_display_mode *drm_mode;
322 unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd;
323 int top_margin, bottom_margin;
324 int interlace;
325 unsigned int hfreq_est;
326 int vsync_plus_bp, vback_porch;
327 unsigned int vtotal_lines, vfieldrate_est, hperiod;
328 unsigned int vfield_rate, vframe_rate;
329 int left_margin, right_margin;
330 unsigned int total_active_pixels, ideal_duty_cycle;
331 unsigned int hblank, total_pixels, pixel_freq;
332 int hsync, hfront_porch, vodd_front_porch_lines;
333 unsigned int tmp1, tmp2;
334
335 drm_mode = drm_mode_create(dev);
336 if (!drm_mode)
337 return NULL;
338
339 /* 1. In order to give correct results, the number of horizontal
340 * pixels requested is first processed to ensure that it is divisible
341 * by the character size, by rounding it to the nearest character
342 * cell boundary:
343 */
344 hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN;
345 hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN;
346
347 /* 2. If interlace is requested, the number of vertical lines assumed
348 * by the calculation must be halved, as the computation calculates
349 * the number of vertical lines per field.
350 */
351 if (interlaced)
352 vdisplay_rnd = vdisplay / 2;
353 else
354 vdisplay_rnd = vdisplay;
355
356 /* 3. Find the frame rate required: */
357 if (interlaced)
358 vfieldrate_rqd = vrefresh * 2;
359 else
360 vfieldrate_rqd = vrefresh;
361
362 /* 4. Find number of lines in Top margin: */
363 top_margin = 0;
364 if (margins)
365 top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) /
366 1000;
367 /* 5. Find number of lines in bottom margin: */
368 bottom_margin = top_margin;
369
370 /* 6. If interlace is required, then set variable interlace: */
371 if (interlaced)
372 interlace = 1;
373 else
374 interlace = 0;
375
376 /* 7. Estimate the Horizontal frequency */
377 {
378 tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500;
379 tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) *
380 2 + interlace;
381 hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1;
382 }
383
384 /* 8. Find the number of lines in V sync + back porch */
385 /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */
386 vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000;
387 vsync_plus_bp = (vsync_plus_bp + 500) / 1000;
388 /* 9. Find the number of lines in V back porch alone: */
389 vback_porch = vsync_plus_bp - V_SYNC_RQD;
390 /* 10. Find the total number of lines in Vertical field period: */
391 vtotal_lines = vdisplay_rnd + top_margin + bottom_margin +
392 vsync_plus_bp + GTF_MIN_V_PORCH;
393 /* 11. Estimate the Vertical field frequency: */
394 vfieldrate_est = hfreq_est / vtotal_lines;
395 /* 12. Find the actual horizontal period: */
396 hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines);
397
398 /* 13. Find the actual Vertical field frequency: */
399 vfield_rate = hfreq_est / vtotal_lines;
400 /* 14. Find the Vertical frame frequency: */
401 if (interlaced)
402 vframe_rate = vfield_rate / 2;
403 else
404 vframe_rate = vfield_rate;
405 /* 15. Find number of pixels in left margin: */
406 if (margins)
407 left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) /
408 1000;
409 else
410 left_margin = 0;
411
412 /* 16.Find number of pixels in right margin: */
413 right_margin = left_margin;
414 /* 17.Find total number of active pixels in image and left and right */
415 total_active_pixels = hdisplay_rnd + left_margin + right_margin;
416 /* 18.Find the ideal blanking duty cycle from blanking duty cycle */
417 ideal_duty_cycle = GTF_C_PRIME * 1000 -
418 (GTF_M_PRIME * 1000000 / hfreq_est);
419 /* 19.Find the number of pixels in the blanking time to the nearest
420 * double character cell: */
421 hblank = total_active_pixels * ideal_duty_cycle /
422 (100000 - ideal_duty_cycle);
423 hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN);
424 hblank = hblank * 2 * GTF_CELL_GRAN;
425 /* 20.Find total number of pixels: */
426 total_pixels = total_active_pixels + hblank;
427 /* 21.Find pixel clock frequency: */
428 pixel_freq = total_pixels * hfreq_est / 1000;
429 /* Stage 1 computations are now complete; I should really pass
430 * the results to another function and do the Stage 2 computations,
431 * but I only need a few more values so I'll just append the
432 * computations here for now */
433 /* 17. Find the number of pixels in the horizontal sync period: */
434 hsync = H_SYNC_PERCENT * total_pixels / 100;
435 hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN;
436 hsync = hsync * GTF_CELL_GRAN;
437 /* 18. Find the number of pixels in horizontal front porch period */
438 hfront_porch = hblank / 2 - hsync;
439 /* 36. Find the number of lines in the odd front porch period: */
440 vodd_front_porch_lines = GTF_MIN_V_PORCH ;
441
442 /* finally, pack the results in the mode struct */
443 drm_mode->hdisplay = hdisplay_rnd;
444 drm_mode->hsync_start = hdisplay_rnd + hfront_porch;
445 drm_mode->hsync_end = drm_mode->hsync_start + hsync;
446 drm_mode->htotal = total_pixels;
447 drm_mode->vdisplay = vdisplay_rnd;
448 drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines;
449 drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD;
450 drm_mode->vtotal = vtotal_lines;
451
452 drm_mode->clock = pixel_freq;
453
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800454 if (interlaced) {
455 drm_mode->vtotal *= 2;
456 drm_mode->flags |= DRM_MODE_FLAG_INTERLACE;
457 }
458
Adam Jackson171fdd82010-03-29 21:43:31 +0000459 drm_mode_set_name(drm_mode);
Adam Jacksonc385e50c2010-04-08 19:00:30 +0000460 if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40)
461 drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC;
462 else
463 drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC;
Adam Jackson171fdd82010-03-29 21:43:31 +0000464
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800465 return drm_mode;
466}
Adam Jackson7a374352010-03-29 21:43:30 +0000467EXPORT_SYMBOL(drm_gtf_mode_complex);
468
469/**
470 * drm_gtf_mode - create the modeline based on GTF algorithm
471 *
472 * @dev :drm device
473 * @hdisplay :hdisplay size
474 * @vdisplay :vdisplay size
475 * @vrefresh :vrefresh rate.
476 * @interlaced :whether the interlace is supported
477 * @margins :whether the margin is supported
478 *
479 * LOCKING.
480 * none.
481 *
482 * return the modeline based on GTF algorithm
483 *
484 * This function is to create the modeline based on the GTF algorithm.
485 * Generalized Timing Formula is derived from:
486 * GTF Spreadsheet by Andy Morrish (1/5/97)
487 * available at http://www.vesa.org
488 *
489 * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c.
490 * What I have done is to translate it by using integer calculation.
491 * I also refer to the function of fb_get_mode in the file of
492 * drivers/video/fbmon.c
493 *
494 * Standard GTF parameters:
495 * M = 600
496 * C = 40
497 * K = 128
498 * J = 20
499 */
500struct drm_display_mode *
501drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh,
502 bool lace, int margins)
503{
504 return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, lace,
505 margins, 600, 40 * 2, 128, 20 * 2);
506}
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800507EXPORT_SYMBOL(drm_gtf_mode);
Adam Jackson7a374352010-03-29 21:43:30 +0000508
Steffen Trumtrarebc64e42012-11-14 11:22:52 +0100509#if IS_ENABLED(CONFIG_VIDEOMODE)
510int drm_display_mode_from_videomode(const struct videomode *vm,
511 struct drm_display_mode *dmode)
512{
513 dmode->hdisplay = vm->hactive;
514 dmode->hsync_start = dmode->hdisplay + vm->hfront_porch;
515 dmode->hsync_end = dmode->hsync_start + vm->hsync_len;
516 dmode->htotal = dmode->hsync_end + vm->hback_porch;
517
518 dmode->vdisplay = vm->vactive;
519 dmode->vsync_start = dmode->vdisplay + vm->vfront_porch;
520 dmode->vsync_end = dmode->vsync_start + vm->vsync_len;
521 dmode->vtotal = dmode->vsync_end + vm->vback_porch;
522
523 dmode->clock = vm->pixelclock / 1000;
524
525 dmode->flags = 0;
526 if (vm->dmt_flags & VESA_DMT_HSYNC_HIGH)
527 dmode->flags |= DRM_MODE_FLAG_PHSYNC;
528 else if (vm->dmt_flags & VESA_DMT_HSYNC_LOW)
529 dmode->flags |= DRM_MODE_FLAG_NHSYNC;
530 if (vm->dmt_flags & VESA_DMT_VSYNC_HIGH)
531 dmode->flags |= DRM_MODE_FLAG_PVSYNC;
532 else if (vm->dmt_flags & VESA_DMT_VSYNC_LOW)
533 dmode->flags |= DRM_MODE_FLAG_NVSYNC;
534 if (vm->data_flags & DISPLAY_FLAGS_INTERLACED)
535 dmode->flags |= DRM_MODE_FLAG_INTERLACE;
536 if (vm->data_flags & DISPLAY_FLAGS_DOUBLESCAN)
537 dmode->flags |= DRM_MODE_FLAG_DBLSCAN;
538 drm_mode_set_name(dmode);
539
540 return 0;
541}
542EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode);
543#endif
544
Steffen Trumtraredb37a92012-10-28 18:28:06 +0100545#if IS_ENABLED(CONFIG_OF_VIDEOMODE)
546/**
547 * of_get_drm_display_mode - get a drm_display_mode from devicetree
548 * @np: device_node with the timing specification
549 * @dmode: will be set to the return value
550 * @index: index into the list of display timings in devicetree
551 *
552 * This function is expensive and should only be used, if only one mode is to be
553 * read from DT. To get multiple modes start with of_get_display_timings and
554 * work with that instead.
555 */
556int of_get_drm_display_mode(struct device_node *np,
557 struct drm_display_mode *dmode, int index)
558{
559 struct videomode vm;
560 int ret;
561
562 ret = of_get_videomode(np, &vm, index);
563 if (ret)
564 return ret;
565
566 drm_display_mode_from_videomode(&vm, dmode);
567
568 pr_debug("%s: got %dx%d display mode from %s\n",
569 of_node_full_name(np), vm.hactive, vm.vactive, np->name);
570 drm_mode_debug_printmodeline(dmode);
571
572 return 0;
573}
574EXPORT_SYMBOL_GPL(of_get_drm_display_mode);
575#endif
576
Zhao Yakui26bbdad2009-06-22 13:17:09 +0800577/**
Dave Airlief453ba02008-11-07 14:05:41 -0800578 * drm_mode_set_name - set the name on a mode
579 * @mode: name will be set in this mode
580 *
581 * LOCKING:
582 * None.
583 *
584 * Set the name of @mode to a standard format.
585 */
586void drm_mode_set_name(struct drm_display_mode *mode)
587{
Adam Jackson171fdd82010-03-29 21:43:31 +0000588 bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE);
589
590 snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s",
591 mode->hdisplay, mode->vdisplay,
592 interlaced ? "i" : "");
Dave Airlief453ba02008-11-07 14:05:41 -0800593}
594EXPORT_SYMBOL(drm_mode_set_name);
595
596/**
597 * drm_mode_list_concat - move modes from one list to another
598 * @head: source list
599 * @new: dst list
600 *
601 * LOCKING:
602 * Caller must ensure both lists are locked.
603 *
604 * Move all the modes from @head to @new.
605 */
606void drm_mode_list_concat(struct list_head *head, struct list_head *new)
607{
608
609 struct list_head *entry, *tmp;
610
611 list_for_each_safe(entry, tmp, head) {
612 list_move_tail(entry, new);
613 }
614}
615EXPORT_SYMBOL(drm_mode_list_concat);
616
617/**
618 * drm_mode_width - get the width of a mode
619 * @mode: mode
620 *
621 * LOCKING:
622 * None.
623 *
624 * Return @mode's width (hdisplay) value.
625 *
626 * FIXME: is this needed?
627 *
628 * RETURNS:
629 * @mode->hdisplay
630 */
Ville Syrjälä0b3904a2012-10-25 18:05:05 +0000631int drm_mode_width(const struct drm_display_mode *mode)
Dave Airlief453ba02008-11-07 14:05:41 -0800632{
633 return mode->hdisplay;
634
635}
636EXPORT_SYMBOL(drm_mode_width);
637
638/**
639 * drm_mode_height - get the height of a mode
640 * @mode: mode
641 *
642 * LOCKING:
643 * None.
644 *
645 * Return @mode's height (vdisplay) value.
646 *
647 * FIXME: is this needed?
648 *
649 * RETURNS:
650 * @mode->vdisplay
651 */
Ville Syrjälä0b3904a2012-10-25 18:05:05 +0000652int drm_mode_height(const struct drm_display_mode *mode)
Dave Airlief453ba02008-11-07 14:05:41 -0800653{
654 return mode->vdisplay;
655}
656EXPORT_SYMBOL(drm_mode_height);
657
Adam Jackson7ac96a92009-12-03 17:44:37 -0500658/** drm_mode_hsync - get the hsync of a mode
659 * @mode: mode
660 *
661 * LOCKING:
662 * None.
663 *
664 * Return @modes's hsync rate in kHz, rounded to the nearest int.
665 */
Chris Wilsonb1f559e2011-01-26 09:49:47 +0000666int drm_mode_hsync(const struct drm_display_mode *mode)
Adam Jackson7ac96a92009-12-03 17:44:37 -0500667{
668 unsigned int calc_val;
669
670 if (mode->hsync)
671 return mode->hsync;
672
673 if (mode->htotal < 0)
674 return 0;
675
676 calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */
677 calc_val += 500; /* round to 1000Hz */
678 calc_val /= 1000; /* truncate to kHz */
679
680 return calc_val;
681}
682EXPORT_SYMBOL(drm_mode_hsync);
683
Dave Airlief453ba02008-11-07 14:05:41 -0800684/**
685 * drm_mode_vrefresh - get the vrefresh of a mode
686 * @mode: mode
687 *
688 * LOCKING:
689 * None.
690 *
Adam Jackson7ac96a92009-12-03 17:44:37 -0500691 * Return @mode's vrefresh rate in Hz or calculate it if necessary.
Dave Airlief453ba02008-11-07 14:05:41 -0800692 *
693 * FIXME: why is this needed? shouldn't vrefresh be set already?
694 *
695 * RETURNS:
Zhao Yakui559ee212009-09-03 09:33:47 +0800696 * Vertical refresh rate. It will be the result of actual value plus 0.5.
697 * If it is 70.288, it will return 70Hz.
698 * If it is 59.6, it will return 60Hz.
Dave Airlief453ba02008-11-07 14:05:41 -0800699 */
Chris Wilsonb1f559e2011-01-26 09:49:47 +0000700int drm_mode_vrefresh(const struct drm_display_mode *mode)
Dave Airlief453ba02008-11-07 14:05:41 -0800701{
702 int refresh = 0;
703 unsigned int calc_val;
704
705 if (mode->vrefresh > 0)
706 refresh = mode->vrefresh;
707 else if (mode->htotal > 0 && mode->vtotal > 0) {
Zhao Yakui559ee212009-09-03 09:33:47 +0800708 int vtotal;
709 vtotal = mode->vtotal;
Dave Airlief453ba02008-11-07 14:05:41 -0800710 /* work out vrefresh the value will be x1000 */
711 calc_val = (mode->clock * 1000);
Dave Airlief453ba02008-11-07 14:05:41 -0800712 calc_val /= mode->htotal;
Zhao Yakui559ee212009-09-03 09:33:47 +0800713 refresh = (calc_val + vtotal / 2) / vtotal;
Dave Airlief453ba02008-11-07 14:05:41 -0800714
Dave Airlief453ba02008-11-07 14:05:41 -0800715 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
716 refresh *= 2;
717 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
718 refresh /= 2;
719 if (mode->vscan > 1)
720 refresh /= mode->vscan;
721 }
722 return refresh;
723}
724EXPORT_SYMBOL(drm_mode_vrefresh);
725
726/**
727 * drm_mode_set_crtcinfo - set CRTC modesetting parameters
728 * @p: mode
729 * @adjust_flags: unused? (FIXME)
730 *
731 * LOCKING:
732 * None.
733 *
734 * Setup the CRTC modesetting parameters for @p, adjusting if necessary.
735 */
736void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags)
737{
738 if ((p == NULL) || ((p->type & DRM_MODE_TYPE_CRTC_C) == DRM_MODE_TYPE_BUILTIN))
739 return;
740
741 p->crtc_hdisplay = p->hdisplay;
742 p->crtc_hsync_start = p->hsync_start;
743 p->crtc_hsync_end = p->hsync_end;
744 p->crtc_htotal = p->htotal;
745 p->crtc_hskew = p->hskew;
746 p->crtc_vdisplay = p->vdisplay;
747 p->crtc_vsync_start = p->vsync_start;
748 p->crtc_vsync_end = p->vsync_end;
749 p->crtc_vtotal = p->vtotal;
750
751 if (p->flags & DRM_MODE_FLAG_INTERLACE) {
752 if (adjust_flags & CRTC_INTERLACE_HALVE_V) {
753 p->crtc_vdisplay /= 2;
754 p->crtc_vsync_start /= 2;
755 p->crtc_vsync_end /= 2;
756 p->crtc_vtotal /= 2;
757 }
Dave Airlief453ba02008-11-07 14:05:41 -0800758 }
759
760 if (p->flags & DRM_MODE_FLAG_DBLSCAN) {
761 p->crtc_vdisplay *= 2;
762 p->crtc_vsync_start *= 2;
763 p->crtc_vsync_end *= 2;
764 p->crtc_vtotal *= 2;
765 }
766
767 if (p->vscan > 1) {
768 p->crtc_vdisplay *= p->vscan;
769 p->crtc_vsync_start *= p->vscan;
770 p->crtc_vsync_end *= p->vscan;
771 p->crtc_vtotal *= p->vscan;
772 }
773
774 p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay);
775 p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal);
776 p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay);
777 p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal);
Dave Airlief453ba02008-11-07 14:05:41 -0800778}
779EXPORT_SYMBOL(drm_mode_set_crtcinfo);
780
781
782/**
Ville Syrjäläc3c50e82012-03-13 12:35:51 +0200783 * drm_mode_copy - copy the mode
784 * @dst: mode to overwrite
785 * @src: mode to copy
786 *
787 * LOCKING:
788 * None.
789 *
790 * Copy an existing mode into another mode, preserving the object id
791 * of the destination mode.
792 */
793void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src)
794{
795 int id = dst->base.id;
796
797 *dst = *src;
798 dst->base.id = id;
799 INIT_LIST_HEAD(&dst->head);
800}
801EXPORT_SYMBOL(drm_mode_copy);
802
803/**
Dave Airlief453ba02008-11-07 14:05:41 -0800804 * drm_mode_duplicate - allocate and duplicate an existing mode
805 * @m: mode to duplicate
806 *
807 * LOCKING:
808 * None.
809 *
810 * Just allocate a new mode, copy the existing mode into it, and return
811 * a pointer to it. Used to create new instances of established modes.
812 */
813struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev,
Chris Wilsonb1f559e2011-01-26 09:49:47 +0000814 const struct drm_display_mode *mode)
Dave Airlief453ba02008-11-07 14:05:41 -0800815{
816 struct drm_display_mode *nmode;
Dave Airlief453ba02008-11-07 14:05:41 -0800817
818 nmode = drm_mode_create(dev);
819 if (!nmode)
820 return NULL;
821
Ville Syrjäläc3c50e82012-03-13 12:35:51 +0200822 drm_mode_copy(nmode, mode);
823
Dave Airlief453ba02008-11-07 14:05:41 -0800824 return nmode;
825}
826EXPORT_SYMBOL(drm_mode_duplicate);
827
828/**
829 * drm_mode_equal - test modes for equality
830 * @mode1: first mode
831 * @mode2: second mode
832 *
833 * LOCKING:
834 * None.
835 *
836 * Check to see if @mode1 and @mode2 are equivalent.
837 *
838 * RETURNS:
839 * True if the modes are equal, false otherwise.
840 */
Ville Syrjälä0b3904a2012-10-25 18:05:05 +0000841bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2)
Dave Airlief453ba02008-11-07 14:05:41 -0800842{
843 /* do clock check convert to PICOS so fb modes get matched
844 * the same */
845 if (mode1->clock && mode2->clock) {
846 if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock))
847 return false;
848 } else if (mode1->clock != mode2->clock)
849 return false;
850
851 if (mode1->hdisplay == mode2->hdisplay &&
852 mode1->hsync_start == mode2->hsync_start &&
853 mode1->hsync_end == mode2->hsync_end &&
854 mode1->htotal == mode2->htotal &&
855 mode1->hskew == mode2->hskew &&
856 mode1->vdisplay == mode2->vdisplay &&
857 mode1->vsync_start == mode2->vsync_start &&
858 mode1->vsync_end == mode2->vsync_end &&
859 mode1->vtotal == mode2->vtotal &&
860 mode1->vscan == mode2->vscan &&
861 mode1->flags == mode2->flags)
862 return true;
863
864 return false;
865}
866EXPORT_SYMBOL(drm_mode_equal);
867
868/**
869 * drm_mode_validate_size - make sure modes adhere to size constraints
870 * @dev: DRM device
871 * @mode_list: list of modes to check
872 * @maxX: maximum width
873 * @maxY: maximum height
874 * @maxPitch: max pitch
875 *
876 * LOCKING:
877 * Caller must hold a lock protecting @mode_list.
878 *
879 * The DRM device (@dev) has size and pitch limits. Here we validate the
880 * modes we probed for @dev against those limits and set their status as
881 * necessary.
882 */
883void drm_mode_validate_size(struct drm_device *dev,
884 struct list_head *mode_list,
885 int maxX, int maxY, int maxPitch)
886{
887 struct drm_display_mode *mode;
888
889 list_for_each_entry(mode, mode_list, head) {
890 if (maxPitch > 0 && mode->hdisplay > maxPitch)
891 mode->status = MODE_BAD_WIDTH;
892
893 if (maxX > 0 && mode->hdisplay > maxX)
894 mode->status = MODE_VIRTUAL_X;
895
896 if (maxY > 0 && mode->vdisplay > maxY)
897 mode->status = MODE_VIRTUAL_Y;
898 }
899}
900EXPORT_SYMBOL(drm_mode_validate_size);
901
902/**
903 * drm_mode_validate_clocks - validate modes against clock limits
904 * @dev: DRM device
905 * @mode_list: list of modes to check
906 * @min: minimum clock rate array
907 * @max: maximum clock rate array
908 * @n_ranges: number of clock ranges (size of arrays)
909 *
910 * LOCKING:
911 * Caller must hold a lock protecting @mode_list.
912 *
913 * Some code may need to check a mode list against the clock limits of the
914 * device in question. This function walks the mode list, testing to make
915 * sure each mode falls within a given range (defined by @min and @max
916 * arrays) and sets @mode->status as needed.
917 */
918void drm_mode_validate_clocks(struct drm_device *dev,
919 struct list_head *mode_list,
920 int *min, int *max, int n_ranges)
921{
922 struct drm_display_mode *mode;
923 int i;
924
925 list_for_each_entry(mode, mode_list, head) {
926 bool good = false;
927 for (i = 0; i < n_ranges; i++) {
928 if (mode->clock >= min[i] && mode->clock <= max[i]) {
929 good = true;
930 break;
931 }
932 }
933 if (!good)
934 mode->status = MODE_CLOCK_RANGE;
935 }
936}
937EXPORT_SYMBOL(drm_mode_validate_clocks);
938
939/**
940 * drm_mode_prune_invalid - remove invalid modes from mode list
941 * @dev: DRM device
942 * @mode_list: list of modes to check
943 * @verbose: be verbose about it
944 *
945 * LOCKING:
946 * Caller must hold a lock protecting @mode_list.
947 *
948 * Once mode list generation is complete, a caller can use this routine to
949 * remove invalid modes from a mode list. If any of the modes have a
950 * status other than %MODE_OK, they are removed from @mode_list and freed.
951 */
952void drm_mode_prune_invalid(struct drm_device *dev,
953 struct list_head *mode_list, bool verbose)
954{
955 struct drm_display_mode *mode, *t;
956
957 list_for_each_entry_safe(mode, t, mode_list, head) {
958 if (mode->status != MODE_OK) {
959 list_del(&mode->head);
960 if (verbose) {
961 drm_mode_debug_printmodeline(mode);
Zhao Yakuif940f372009-07-20 13:48:05 +0800962 DRM_DEBUG_KMS("Not using %s mode %d\n",
yakui_zhaof0531852009-06-02 14:12:47 +0800963 mode->name, mode->status);
Dave Airlief453ba02008-11-07 14:05:41 -0800964 }
965 drm_mode_destroy(dev, mode);
966 }
967 }
968}
969EXPORT_SYMBOL(drm_mode_prune_invalid);
970
971/**
972 * drm_mode_compare - compare modes for favorability
Dave Chinner2c761272010-01-12 17:39:16 +1100973 * @priv: unused
Dave Airlief453ba02008-11-07 14:05:41 -0800974 * @lh_a: list_head for first mode
975 * @lh_b: list_head for second mode
976 *
977 * LOCKING:
978 * None.
979 *
980 * Compare two modes, given by @lh_a and @lh_b, returning a value indicating
981 * which is better.
982 *
983 * RETURNS:
984 * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or
985 * positive if @lh_b is better than @lh_a.
986 */
Dave Chinner2c761272010-01-12 17:39:16 +1100987static int drm_mode_compare(void *priv, struct list_head *lh_a, struct list_head *lh_b)
Dave Airlief453ba02008-11-07 14:05:41 -0800988{
989 struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head);
990 struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head);
991 int diff;
992
993 diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) -
994 ((a->type & DRM_MODE_TYPE_PREFERRED) != 0);
995 if (diff)
996 return diff;
997 diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay;
998 if (diff)
999 return diff;
1000 diff = b->clock - a->clock;
1001 return diff;
1002}
1003
Dave Airlief453ba02008-11-07 14:05:41 -08001004/**
1005 * drm_mode_sort - sort mode list
1006 * @mode_list: list to sort
1007 *
1008 * LOCKING:
1009 * Caller must hold a lock protecting @mode_list.
1010 *
1011 * Sort @mode_list by favorability, putting good modes first.
1012 */
1013void drm_mode_sort(struct list_head *mode_list)
1014{
Dave Chinner2c761272010-01-12 17:39:16 +11001015 list_sort(NULL, mode_list, drm_mode_compare);
Dave Airlief453ba02008-11-07 14:05:41 -08001016}
1017EXPORT_SYMBOL(drm_mode_sort);
1018
1019/**
1020 * drm_mode_connector_list_update - update the mode list for the connector
1021 * @connector: the connector to update
1022 *
1023 * LOCKING:
1024 * Caller must hold a lock protecting @mode_list.
1025 *
1026 * This moves the modes from the @connector probed_modes list
1027 * to the actual mode list. It compares the probed mode against the current
1028 * list and only adds different modes. All modes unverified after this point
1029 * will be removed by the prune invalid modes.
1030 */
1031void drm_mode_connector_list_update(struct drm_connector *connector)
1032{
1033 struct drm_display_mode *mode;
1034 struct drm_display_mode *pmode, *pt;
1035 int found_it;
1036
1037 list_for_each_entry_safe(pmode, pt, &connector->probed_modes,
1038 head) {
1039 found_it = 0;
1040 /* go through current modes checking for the new probed mode */
1041 list_for_each_entry(mode, &connector->modes, head) {
1042 if (drm_mode_equal(pmode, mode)) {
1043 found_it = 1;
1044 /* if equal delete the probed mode */
1045 mode->status = pmode->status;
Keith Packard38d54872009-07-20 14:49:17 -07001046 /* Merge type bits together */
1047 mode->type |= pmode->type;
Dave Airlief453ba02008-11-07 14:05:41 -08001048 list_del(&pmode->head);
1049 drm_mode_destroy(connector->dev, pmode);
1050 break;
1051 }
1052 }
1053
1054 if (!found_it) {
1055 list_move_tail(&pmode->head, &connector->modes);
1056 }
1057 }
1058}
1059EXPORT_SYMBOL(drm_mode_connector_list_update);
Chris Wilson1794d252011-04-17 07:43:32 +01001060
1061/**
1062 * drm_mode_parse_command_line_for_connector - parse command line for connector
1063 * @mode_option - per connector mode option
1064 * @connector - connector to parse line for
1065 *
1066 * This parses the connector specific then generic command lines for
1067 * modes and options to configure the connector.
1068 *
1069 * This uses the same parameters as the fb modedb.c, except for extra
1070 * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
1071 *
1072 * enable/enable Digital/disable bit at the end
1073 */
1074bool drm_mode_parse_command_line_for_connector(const char *mode_option,
1075 struct drm_connector *connector,
1076 struct drm_cmdline_mode *mode)
1077{
1078 const char *name;
1079 unsigned int namelen;
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001080 bool res_specified = false, bpp_specified = false, refresh_specified = false;
Chris Wilson1794d252011-04-17 07:43:32 +01001081 unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0;
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001082 bool yres_specified = false, cvt = false, rb = false;
1083 bool interlace = false, margins = false, was_digit = false;
Chris Wilson1794d252011-04-17 07:43:32 +01001084 int i;
1085 enum drm_connector_force force = DRM_FORCE_UNSPECIFIED;
1086
Dave Airliecb3c4382011-05-04 13:08:58 +10001087#ifdef CONFIG_FB
Chris Wilson1794d252011-04-17 07:43:32 +01001088 if (!mode_option)
1089 mode_option = fb_mode_option;
Dave Airliecb3c4382011-05-04 13:08:58 +10001090#endif
Chris Wilson1794d252011-04-17 07:43:32 +01001091
1092 if (!mode_option) {
1093 mode->specified = false;
1094 return false;
1095 }
1096
1097 name = mode_option;
1098 namelen = strlen(name);
1099 for (i = namelen-1; i >= 0; i--) {
1100 switch (name[i]) {
1101 case '@':
Chris Wilson1794d252011-04-17 07:43:32 +01001102 if (!refresh_specified && !bpp_specified &&
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001103 !yres_specified && !cvt && !rb && was_digit) {
Chris Wilson1794d252011-04-17 07:43:32 +01001104 refresh = simple_strtol(&name[i+1], NULL, 10);
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001105 refresh_specified = true;
1106 was_digit = false;
Chris Wilson1794d252011-04-17 07:43:32 +01001107 } else
1108 goto done;
1109 break;
1110 case '-':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001111 if (!bpp_specified && !yres_specified && !cvt &&
1112 !rb && was_digit) {
Chris Wilson1794d252011-04-17 07:43:32 +01001113 bpp = simple_strtol(&name[i+1], NULL, 10);
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001114 bpp_specified = true;
1115 was_digit = false;
Chris Wilson1794d252011-04-17 07:43:32 +01001116 } else
1117 goto done;
1118 break;
1119 case 'x':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001120 if (!yres_specified && was_digit) {
Chris Wilson1794d252011-04-17 07:43:32 +01001121 yres = simple_strtol(&name[i+1], NULL, 10);
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001122 yres_specified = true;
1123 was_digit = false;
Chris Wilson1794d252011-04-17 07:43:32 +01001124 } else
1125 goto done;
1126 case '0' ... '9':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001127 was_digit = true;
Chris Wilson1794d252011-04-17 07:43:32 +01001128 break;
1129 case 'M':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001130 if (yres_specified || cvt || was_digit)
1131 goto done;
1132 cvt = true;
Chris Wilson1794d252011-04-17 07:43:32 +01001133 break;
1134 case 'R':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001135 if (yres_specified || cvt || rb || was_digit)
1136 goto done;
1137 rb = true;
Chris Wilson1794d252011-04-17 07:43:32 +01001138 break;
1139 case 'm':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001140 if (cvt || yres_specified || was_digit)
1141 goto done;
1142 margins = true;
Chris Wilson1794d252011-04-17 07:43:32 +01001143 break;
1144 case 'i':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001145 if (cvt || yres_specified || was_digit)
1146 goto done;
1147 interlace = true;
Chris Wilson1794d252011-04-17 07:43:32 +01001148 break;
1149 case 'e':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001150 if (yres_specified || bpp_specified || refresh_specified ||
1151 was_digit || (force != DRM_FORCE_UNSPECIFIED))
1152 goto done;
1153
Chris Wilson1794d252011-04-17 07:43:32 +01001154 force = DRM_FORCE_ON;
1155 break;
1156 case 'D':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001157 if (yres_specified || bpp_specified || refresh_specified ||
1158 was_digit || (force != DRM_FORCE_UNSPECIFIED))
1159 goto done;
1160
Chris Wilson1794d252011-04-17 07:43:32 +01001161 if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) &&
1162 (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB))
1163 force = DRM_FORCE_ON;
1164 else
1165 force = DRM_FORCE_ON_DIGITAL;
1166 break;
1167 case 'd':
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001168 if (yres_specified || bpp_specified || refresh_specified ||
1169 was_digit || (force != DRM_FORCE_UNSPECIFIED))
1170 goto done;
1171
Chris Wilson1794d252011-04-17 07:43:32 +01001172 force = DRM_FORCE_OFF;
1173 break;
1174 default:
1175 goto done;
1176 }
1177 }
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001178
Chris Wilson1794d252011-04-17 07:43:32 +01001179 if (i < 0 && yres_specified) {
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001180 char *ch;
1181 xres = simple_strtol(name, &ch, 10);
1182 if ((ch != NULL) && (*ch == 'x'))
1183 res_specified = true;
1184 else
1185 i = ch - name;
1186 } else if (!yres_specified && was_digit) {
1187 /* catch mode that begins with digits but has no 'x' */
1188 i = 0;
Chris Wilson1794d252011-04-17 07:43:32 +01001189 }
1190done:
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001191 if (i >= 0) {
1192 printk(KERN_WARNING
1193 "parse error at position %i in video mode '%s'\n",
1194 i, name);
1195 mode->specified = false;
1196 return false;
1197 }
1198
Chris Wilson1794d252011-04-17 07:43:32 +01001199 if (res_specified) {
1200 mode->specified = true;
1201 mode->xres = xres;
1202 mode->yres = yres;
1203 }
1204
1205 if (refresh_specified) {
1206 mode->refresh_specified = true;
1207 mode->refresh = refresh;
1208 }
1209
1210 if (bpp_specified) {
1211 mode->bpp_specified = true;
1212 mode->bpp = bpp;
1213 }
Rolf Eike Beer04fee892011-06-15 11:27:02 +02001214 mode->rb = rb;
1215 mode->cvt = cvt;
1216 mode->interlace = interlace;
1217 mode->margins = margins;
Chris Wilson1794d252011-04-17 07:43:32 +01001218 mode->force = force;
1219
1220 return true;
1221}
1222EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector);
1223
1224struct drm_display_mode *
1225drm_mode_create_from_cmdline_mode(struct drm_device *dev,
1226 struct drm_cmdline_mode *cmd)
1227{
1228 struct drm_display_mode *mode;
1229
1230 if (cmd->cvt)
1231 mode = drm_cvt_mode(dev,
1232 cmd->xres, cmd->yres,
1233 cmd->refresh_specified ? cmd->refresh : 60,
1234 cmd->rb, cmd->interlace,
1235 cmd->margins);
1236 else
1237 mode = drm_gtf_mode(dev,
1238 cmd->xres, cmd->yres,
1239 cmd->refresh_specified ? cmd->refresh : 60,
1240 cmd->interlace,
1241 cmd->margins);
1242 if (!mode)
1243 return NULL;
1244
1245 drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
1246 return mode;
1247}
1248EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode);