Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1 | /* |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 2 | * 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 Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 6 | * Copyright 2005-2006 Luc Verhaegen |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 7 | * Copyright (c) 2001, Andy Ritger aritger@nvidia.com |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 8 | * |
| 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 Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 34 | #include <linux/list_sort.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 35 | #include <linux/export.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 36 | #include <drm/drmP.h> |
| 37 | #include <drm/drm_crtc.h> |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 38 | #include <video/of_videomode.h> |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 39 | #include <video/videomode.h> |
Daniel Vetter | 5531000 | 2014-01-23 15:52:20 +0100 | [diff] [blame] | 40 | #include <drm/drm_modes.h> |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 41 | |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 42 | #include "drm_crtc_internal.h" |
| 43 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 44 | /** |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 45 | * drm_mode_debug_printmodeline - print a mode to dmesg |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 46 | * @mode: mode to print |
| 47 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 48 | * Describe @mode using DRM_DEBUG. |
| 49 | */ |
Ville Syrjälä | 0b3904a | 2012-10-25 18:05:05 +0000 | [diff] [blame] | 50 | void drm_mode_debug_printmodeline(const struct drm_display_mode *mode) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 51 | { |
Zhao Yakui | f940f37 | 2009-07-20 13:48:05 +0800 | [diff] [blame] | 52 | DRM_DEBUG_KMS("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d " |
Zhao Yakui | 8a4c47f | 2009-07-20 13:48:04 +0800 | [diff] [blame] | 53 | "0x%x 0x%x\n", |
yakui_zhao | f053185 | 2009-06-02 14:12:47 +0800 | [diff] [blame] | 54 | mode->base.id, mode->name, mode->vrefresh, mode->clock, |
| 55 | mode->hdisplay, mode->hsync_start, |
| 56 | mode->hsync_end, mode->htotal, |
| 57 | mode->vdisplay, mode->vsync_start, |
| 58 | mode->vsync_end, mode->vtotal, mode->type, mode->flags); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 59 | } |
| 60 | EXPORT_SYMBOL(drm_mode_debug_printmodeline); |
| 61 | |
| 62 | /** |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 63 | * drm_mode_create - create a new display mode |
| 64 | * @dev: DRM device |
| 65 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 66 | * Create a new, cleared drm_display_mode with kzalloc, allocate an ID for it |
| 67 | * and return it. |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 68 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 69 | * Returns: |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 70 | * Pointer to new mode on success, NULL on error. |
| 71 | */ |
| 72 | struct drm_display_mode *drm_mode_create(struct drm_device *dev) |
| 73 | { |
| 74 | struct drm_display_mode *nmode; |
| 75 | |
| 76 | nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); |
| 77 | if (!nmode) |
| 78 | return NULL; |
| 79 | |
| 80 | if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { |
| 81 | kfree(nmode); |
| 82 | return NULL; |
| 83 | } |
| 84 | |
| 85 | return nmode; |
| 86 | } |
| 87 | EXPORT_SYMBOL(drm_mode_create); |
| 88 | |
| 89 | /** |
| 90 | * drm_mode_destroy - remove a mode |
| 91 | * @dev: DRM device |
| 92 | * @mode: mode to remove |
| 93 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 94 | * Release @mode's unique ID, then free it @mode structure itself using kfree. |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 95 | */ |
| 96 | void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) |
| 97 | { |
| 98 | if (!mode) |
| 99 | return; |
| 100 | |
Dave Airlie | 7c8f6d2 | 2016-04-15 15:10:32 +1000 | [diff] [blame] | 101 | drm_mode_object_unregister(dev, &mode->base); |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 102 | |
| 103 | kfree(mode); |
| 104 | } |
| 105 | EXPORT_SYMBOL(drm_mode_destroy); |
| 106 | |
| 107 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 108 | * drm_mode_probed_add - add a mode to a connector's probed_mode list |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 109 | * @connector: connector the new mode |
| 110 | * @mode: mode data |
| 111 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 112 | * Add @mode to @connector's probed_mode list for later use. This list should |
| 113 | * then in a second step get filtered and all the modes actually supported by |
| 114 | * the hardware moved to the @connector's modes list. |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 115 | */ |
| 116 | void drm_mode_probed_add(struct drm_connector *connector, |
| 117 | struct drm_display_mode *mode) |
| 118 | { |
| 119 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
| 120 | |
| 121 | list_add_tail(&mode->head, &connector->probed_modes); |
| 122 | } |
| 123 | EXPORT_SYMBOL(drm_mode_probed_add); |
| 124 | |
| 125 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 126 | * drm_cvt_mode -create a modeline based on the CVT algorithm |
| 127 | * @dev: drm device |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 128 | * @hdisplay: hdisplay size |
| 129 | * @vdisplay: vdisplay size |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 130 | * @vrefresh: vrefresh rate |
| 131 | * @reduced: whether to use reduced blanking |
| 132 | * @interlaced: whether to compute an interlaced mode |
| 133 | * @margins: whether to add margins (borders) |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 134 | * |
| 135 | * This function is called to generate the modeline based on CVT algorithm |
| 136 | * according to the hdisplay, vdisplay, vrefresh. |
| 137 | * It is based from the VESA(TM) Coordinated Video Timing Generator by |
| 138 | * Graham Loveridge April 9, 2003 available at |
Justin P. Mattock | 631dd1a | 2010-10-18 11:03:14 +0200 | [diff] [blame] | 139 | * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 140 | * |
| 141 | * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. |
| 142 | * What I have done is to translate it by using integer calculation. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 143 | * |
| 144 | * Returns: |
| 145 | * The modeline based on the CVT algorithm stored in a drm_display_mode object. |
| 146 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
| 147 | * when no mode could be allocated. |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 148 | */ |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 149 | struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, |
| 150 | int vdisplay, int vrefresh, |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 151 | bool reduced, bool interlaced, bool margins) |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 152 | { |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 153 | #define HV_FACTOR 1000 |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 154 | /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
| 155 | #define CVT_MARGIN_PERCENTAGE 18 |
| 156 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
| 157 | #define CVT_H_GRANULARITY 8 |
| 158 | /* 3) Minimum vertical porch (lines) - default 3 */ |
| 159 | #define CVT_MIN_V_PORCH 3 |
| 160 | /* 4) Minimum number of vertical back porch lines - default 6 */ |
| 161 | #define CVT_MIN_V_BPORCH 6 |
| 162 | /* Pixel Clock step (kHz) */ |
| 163 | #define CVT_CLOCK_STEP 250 |
| 164 | struct drm_display_mode *drm_mode; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 165 | unsigned int vfieldrate, hperiod; |
| 166 | int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync; |
| 167 | int interlace; |
| 168 | |
| 169 | /* allocate the drm_display_mode structure. If failure, we will |
| 170 | * return directly |
| 171 | */ |
| 172 | drm_mode = drm_mode_create(dev); |
| 173 | if (!drm_mode) |
| 174 | return NULL; |
| 175 | |
| 176 | /* the CVT default refresh rate is 60Hz */ |
| 177 | if (!vrefresh) |
| 178 | vrefresh = 60; |
| 179 | |
| 180 | /* the required field fresh rate */ |
| 181 | if (interlaced) |
| 182 | vfieldrate = vrefresh * 2; |
| 183 | else |
| 184 | vfieldrate = vrefresh; |
| 185 | |
| 186 | /* horizontal pixels */ |
| 187 | hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY); |
| 188 | |
| 189 | /* determine the left&right borders */ |
| 190 | hmargin = 0; |
| 191 | if (margins) { |
| 192 | hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
| 193 | hmargin -= hmargin % CVT_H_GRANULARITY; |
| 194 | } |
| 195 | /* find the total active pixels */ |
| 196 | drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin; |
| 197 | |
| 198 | /* find the number of lines per field */ |
| 199 | if (interlaced) |
| 200 | vdisplay_rnd = vdisplay / 2; |
| 201 | else |
| 202 | vdisplay_rnd = vdisplay; |
| 203 | |
| 204 | /* find the top & bottom borders */ |
| 205 | vmargin = 0; |
| 206 | if (margins) |
| 207 | vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
| 208 | |
Francisco Jerez | 841b411 | 2009-08-12 02:30:09 +0200 | [diff] [blame] | 209 | drm_mode->vdisplay = vdisplay + 2 * vmargin; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 210 | |
| 211 | /* Interlaced */ |
| 212 | if (interlaced) |
| 213 | interlace = 1; |
| 214 | else |
| 215 | interlace = 0; |
| 216 | |
| 217 | /* Determine VSync Width from aspect ratio */ |
| 218 | if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay)) |
| 219 | vsync = 4; |
| 220 | else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay)) |
| 221 | vsync = 5; |
| 222 | else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay)) |
| 223 | vsync = 6; |
| 224 | else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay)) |
| 225 | vsync = 7; |
| 226 | else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay)) |
| 227 | vsync = 7; |
| 228 | else /* custom */ |
| 229 | vsync = 10; |
| 230 | |
| 231 | if (!reduced) { |
| 232 | /* simplify the GTF calculation */ |
| 233 | /* 4) Minimum time of vertical sync + back porch interval (µs) |
| 234 | * default 550.0 |
| 235 | */ |
| 236 | int tmp1, tmp2; |
| 237 | #define CVT_MIN_VSYNC_BP 550 |
| 238 | /* 3) Nominal HSync width (% of line period) - default 8 */ |
| 239 | #define CVT_HSYNC_PERCENTAGE 8 |
| 240 | unsigned int hblank_percentage; |
| 241 | int vsyncandback_porch, vback_porch, hblank; |
| 242 | |
| 243 | /* estimated the horizontal period */ |
| 244 | tmp1 = HV_FACTOR * 1000000 - |
| 245 | CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate; |
| 246 | tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 + |
| 247 | interlace; |
| 248 | hperiod = tmp1 * 2 / (tmp2 * vfieldrate); |
| 249 | |
| 250 | tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1; |
| 251 | /* 9. Find number of lines in sync + backporch */ |
| 252 | if (tmp1 < (vsync + CVT_MIN_V_PORCH)) |
| 253 | vsyncandback_porch = vsync + CVT_MIN_V_PORCH; |
| 254 | else |
| 255 | vsyncandback_porch = tmp1; |
| 256 | /* 10. Find number of lines in back porch */ |
| 257 | vback_porch = vsyncandback_porch - vsync; |
| 258 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + |
| 259 | vsyncandback_porch + CVT_MIN_V_PORCH; |
| 260 | /* 5) Definition of Horizontal blanking time limitation */ |
| 261 | /* Gradient (%/kHz) - default 600 */ |
| 262 | #define CVT_M_FACTOR 600 |
| 263 | /* Offset (%) - default 40 */ |
| 264 | #define CVT_C_FACTOR 40 |
| 265 | /* Blanking time scaling factor - default 128 */ |
| 266 | #define CVT_K_FACTOR 128 |
| 267 | /* Scaling factor weighting - default 20 */ |
| 268 | #define CVT_J_FACTOR 20 |
| 269 | #define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256) |
| 270 | #define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \ |
| 271 | CVT_J_FACTOR) |
| 272 | /* 12. Find ideal blanking duty cycle from formula */ |
| 273 | hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME * |
| 274 | hperiod / 1000; |
| 275 | /* 13. Blanking time */ |
| 276 | if (hblank_percentage < 20 * HV_FACTOR) |
| 277 | hblank_percentage = 20 * HV_FACTOR; |
| 278 | hblank = drm_mode->hdisplay * hblank_percentage / |
| 279 | (100 * HV_FACTOR - hblank_percentage); |
| 280 | hblank -= hblank % (2 * CVT_H_GRANULARITY); |
Yannick Guerrini | 2a97acd | 2015-03-04 09:30:09 +0100 | [diff] [blame] | 281 | /* 14. find the total pixels per line */ |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 282 | drm_mode->htotal = drm_mode->hdisplay + hblank; |
| 283 | drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2; |
| 284 | drm_mode->hsync_start = drm_mode->hsync_end - |
| 285 | (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100; |
| 286 | drm_mode->hsync_start += CVT_H_GRANULARITY - |
| 287 | drm_mode->hsync_start % CVT_H_GRANULARITY; |
| 288 | /* fill the Vsync values */ |
| 289 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH; |
| 290 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
| 291 | } else { |
| 292 | /* Reduced blanking */ |
| 293 | /* Minimum vertical blanking interval time (µs)- default 460 */ |
| 294 | #define CVT_RB_MIN_VBLANK 460 |
| 295 | /* Fixed number of clocks for horizontal sync */ |
| 296 | #define CVT_RB_H_SYNC 32 |
| 297 | /* Fixed number of clocks for horizontal blanking */ |
| 298 | #define CVT_RB_H_BLANK 160 |
| 299 | /* Fixed number of lines for vertical front porch - default 3*/ |
| 300 | #define CVT_RB_VFPORCH 3 |
| 301 | int vbilines; |
| 302 | int tmp1, tmp2; |
| 303 | /* 8. Estimate Horizontal period. */ |
| 304 | tmp1 = HV_FACTOR * 1000000 - |
| 305 | CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate; |
| 306 | tmp2 = vdisplay_rnd + 2 * vmargin; |
| 307 | hperiod = tmp1 / (tmp2 * vfieldrate); |
| 308 | /* 9. Find number of lines in vertical blanking */ |
| 309 | vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1; |
| 310 | /* 10. Check if vertical blanking is sufficient */ |
| 311 | if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH)) |
| 312 | vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH; |
| 313 | /* 11. Find total number of lines in vertical field */ |
| 314 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines; |
| 315 | /* 12. Find total number of pixels in a line */ |
| 316 | drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK; |
| 317 | /* Fill in HSync values */ |
| 318 | drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2; |
Adam Jackson | adde0f2 | 2010-08-23 10:19:14 -0400 | [diff] [blame] | 319 | drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC; |
| 320 | /* Fill in VSync values */ |
| 321 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH; |
| 322 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 323 | } |
| 324 | /* 15/13. Find pixel clock frequency (kHz for xf86) */ |
| 325 | drm_mode->clock = drm_mode->htotal * HV_FACTOR * 1000 / hperiod; |
| 326 | drm_mode->clock -= drm_mode->clock % CVT_CLOCK_STEP; |
| 327 | /* 18/16. Find actual vertical frame frequency */ |
| 328 | /* ignore - just set the mode flag for interlaced */ |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 329 | if (interlaced) { |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 330 | drm_mode->vtotal *= 2; |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 331 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
| 332 | } |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 333 | /* Fill the mode line name */ |
| 334 | drm_mode_set_name(drm_mode); |
| 335 | if (reduced) |
| 336 | drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC | |
| 337 | DRM_MODE_FLAG_NVSYNC); |
| 338 | else |
| 339 | drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | |
| 340 | DRM_MODE_FLAG_NHSYNC); |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 341 | |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 342 | return drm_mode; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 343 | } |
| 344 | EXPORT_SYMBOL(drm_cvt_mode); |
| 345 | |
| 346 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 347 | * drm_gtf_mode_complex - create the modeline based on the full GTF algorithm |
| 348 | * @dev: drm device |
| 349 | * @hdisplay: hdisplay size |
| 350 | * @vdisplay: vdisplay size |
| 351 | * @vrefresh: vrefresh rate. |
| 352 | * @interlaced: whether to compute an interlaced mode |
| 353 | * @margins: desired margin (borders) size |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 354 | * @GTF_M: extended GTF formula parameters |
| 355 | * @GTF_2C: extended GTF formula parameters |
| 356 | * @GTF_K: extended GTF formula parameters |
| 357 | * @GTF_2J: extended GTF formula parameters |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 358 | * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 359 | * GTF feature blocks specify C and J in multiples of 0.5, so we pass them |
| 360 | * in here multiplied by two. For a C of 40, pass in 80. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 361 | * |
| 362 | * Returns: |
| 363 | * The modeline based on the full GTF algorithm stored in a drm_display_mode object. |
| 364 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
| 365 | * when no mode could be allocated. |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 366 | */ |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 367 | struct drm_display_mode * |
| 368 | drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay, |
| 369 | int vrefresh, bool interlaced, int margins, |
| 370 | int GTF_M, int GTF_2C, int GTF_K, int GTF_2J) |
| 371 | { /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 372 | #define GTF_MARGIN_PERCENTAGE 18 |
| 373 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
| 374 | #define GTF_CELL_GRAN 8 |
| 375 | /* 3) Minimum vertical porch (lines) - default 3 */ |
| 376 | #define GTF_MIN_V_PORCH 1 |
| 377 | /* width of vsync in lines */ |
| 378 | #define V_SYNC_RQD 3 |
| 379 | /* width of hsync as % of total line */ |
| 380 | #define H_SYNC_PERCENT 8 |
| 381 | /* min time of vsync + back porch (microsec) */ |
| 382 | #define MIN_VSYNC_PLUS_BP 550 |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 383 | /* C' and M' are part of the Blanking Duty Cycle computation */ |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 384 | #define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2) |
| 385 | #define GTF_M_PRIME (GTF_K * GTF_M / 256) |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 386 | struct drm_display_mode *drm_mode; |
| 387 | unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd; |
| 388 | int top_margin, bottom_margin; |
| 389 | int interlace; |
| 390 | unsigned int hfreq_est; |
| 391 | int vsync_plus_bp, vback_porch; |
| 392 | unsigned int vtotal_lines, vfieldrate_est, hperiod; |
| 393 | unsigned int vfield_rate, vframe_rate; |
| 394 | int left_margin, right_margin; |
| 395 | unsigned int total_active_pixels, ideal_duty_cycle; |
| 396 | unsigned int hblank, total_pixels, pixel_freq; |
| 397 | int hsync, hfront_porch, vodd_front_porch_lines; |
| 398 | unsigned int tmp1, tmp2; |
| 399 | |
| 400 | drm_mode = drm_mode_create(dev); |
| 401 | if (!drm_mode) |
| 402 | return NULL; |
| 403 | |
| 404 | /* 1. In order to give correct results, the number of horizontal |
| 405 | * pixels requested is first processed to ensure that it is divisible |
| 406 | * by the character size, by rounding it to the nearest character |
| 407 | * cell boundary: |
| 408 | */ |
| 409 | hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
| 410 | hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN; |
| 411 | |
| 412 | /* 2. If interlace is requested, the number of vertical lines assumed |
| 413 | * by the calculation must be halved, as the computation calculates |
| 414 | * the number of vertical lines per field. |
| 415 | */ |
| 416 | if (interlaced) |
| 417 | vdisplay_rnd = vdisplay / 2; |
| 418 | else |
| 419 | vdisplay_rnd = vdisplay; |
| 420 | |
| 421 | /* 3. Find the frame rate required: */ |
| 422 | if (interlaced) |
| 423 | vfieldrate_rqd = vrefresh * 2; |
| 424 | else |
| 425 | vfieldrate_rqd = vrefresh; |
| 426 | |
| 427 | /* 4. Find number of lines in Top margin: */ |
| 428 | top_margin = 0; |
| 429 | if (margins) |
| 430 | top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
| 431 | 1000; |
| 432 | /* 5. Find number of lines in bottom margin: */ |
| 433 | bottom_margin = top_margin; |
| 434 | |
| 435 | /* 6. If interlace is required, then set variable interlace: */ |
| 436 | if (interlaced) |
| 437 | interlace = 1; |
| 438 | else |
| 439 | interlace = 0; |
| 440 | |
| 441 | /* 7. Estimate the Horizontal frequency */ |
| 442 | { |
| 443 | tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; |
| 444 | tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) * |
| 445 | 2 + interlace; |
| 446 | hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1; |
| 447 | } |
| 448 | |
| 449 | /* 8. Find the number of lines in V sync + back porch */ |
| 450 | /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */ |
| 451 | vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000; |
| 452 | vsync_plus_bp = (vsync_plus_bp + 500) / 1000; |
| 453 | /* 9. Find the number of lines in V back porch alone: */ |
| 454 | vback_porch = vsync_plus_bp - V_SYNC_RQD; |
| 455 | /* 10. Find the total number of lines in Vertical field period: */ |
| 456 | vtotal_lines = vdisplay_rnd + top_margin + bottom_margin + |
| 457 | vsync_plus_bp + GTF_MIN_V_PORCH; |
| 458 | /* 11. Estimate the Vertical field frequency: */ |
| 459 | vfieldrate_est = hfreq_est / vtotal_lines; |
| 460 | /* 12. Find the actual horizontal period: */ |
| 461 | hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines); |
| 462 | |
| 463 | /* 13. Find the actual Vertical field frequency: */ |
| 464 | vfield_rate = hfreq_est / vtotal_lines; |
| 465 | /* 14. Find the Vertical frame frequency: */ |
| 466 | if (interlaced) |
| 467 | vframe_rate = vfield_rate / 2; |
| 468 | else |
| 469 | vframe_rate = vfield_rate; |
| 470 | /* 15. Find number of pixels in left margin: */ |
| 471 | if (margins) |
| 472 | left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
| 473 | 1000; |
| 474 | else |
| 475 | left_margin = 0; |
| 476 | |
| 477 | /* 16.Find number of pixels in right margin: */ |
| 478 | right_margin = left_margin; |
| 479 | /* 17.Find total number of active pixels in image and left and right */ |
| 480 | total_active_pixels = hdisplay_rnd + left_margin + right_margin; |
| 481 | /* 18.Find the ideal blanking duty cycle from blanking duty cycle */ |
| 482 | ideal_duty_cycle = GTF_C_PRIME * 1000 - |
| 483 | (GTF_M_PRIME * 1000000 / hfreq_est); |
| 484 | /* 19.Find the number of pixels in the blanking time to the nearest |
| 485 | * double character cell: */ |
| 486 | hblank = total_active_pixels * ideal_duty_cycle / |
| 487 | (100000 - ideal_duty_cycle); |
| 488 | hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN); |
| 489 | hblank = hblank * 2 * GTF_CELL_GRAN; |
| 490 | /* 20.Find total number of pixels: */ |
| 491 | total_pixels = total_active_pixels + hblank; |
| 492 | /* 21.Find pixel clock frequency: */ |
| 493 | pixel_freq = total_pixels * hfreq_est / 1000; |
| 494 | /* Stage 1 computations are now complete; I should really pass |
| 495 | * the results to another function and do the Stage 2 computations, |
| 496 | * but I only need a few more values so I'll just append the |
| 497 | * computations here for now */ |
| 498 | /* 17. Find the number of pixels in the horizontal sync period: */ |
| 499 | hsync = H_SYNC_PERCENT * total_pixels / 100; |
| 500 | hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
| 501 | hsync = hsync * GTF_CELL_GRAN; |
| 502 | /* 18. Find the number of pixels in horizontal front porch period */ |
| 503 | hfront_porch = hblank / 2 - hsync; |
| 504 | /* 36. Find the number of lines in the odd front porch period: */ |
| 505 | vodd_front_porch_lines = GTF_MIN_V_PORCH ; |
| 506 | |
| 507 | /* finally, pack the results in the mode struct */ |
| 508 | drm_mode->hdisplay = hdisplay_rnd; |
| 509 | drm_mode->hsync_start = hdisplay_rnd + hfront_porch; |
| 510 | drm_mode->hsync_end = drm_mode->hsync_start + hsync; |
| 511 | drm_mode->htotal = total_pixels; |
| 512 | drm_mode->vdisplay = vdisplay_rnd; |
| 513 | drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines; |
| 514 | drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD; |
| 515 | drm_mode->vtotal = vtotal_lines; |
| 516 | |
| 517 | drm_mode->clock = pixel_freq; |
| 518 | |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 519 | if (interlaced) { |
| 520 | drm_mode->vtotal *= 2; |
| 521 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
| 522 | } |
| 523 | |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 524 | drm_mode_set_name(drm_mode); |
Adam Jackson | c385e50c | 2010-04-08 19:00:30 +0000 | [diff] [blame] | 525 | if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40) |
| 526 | drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; |
| 527 | else |
| 528 | drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC; |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 529 | |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 530 | return drm_mode; |
| 531 | } |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 532 | EXPORT_SYMBOL(drm_gtf_mode_complex); |
| 533 | |
| 534 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 535 | * drm_gtf_mode - create the modeline based on the GTF algorithm |
| 536 | * @dev: drm device |
| 537 | * @hdisplay: hdisplay size |
| 538 | * @vdisplay: vdisplay size |
| 539 | * @vrefresh: vrefresh rate. |
| 540 | * @interlaced: whether to compute an interlaced mode |
| 541 | * @margins: desired margin (borders) size |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 542 | * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 543 | * return the modeline based on GTF algorithm |
| 544 | * |
| 545 | * This function is to create the modeline based on the GTF algorithm. |
| 546 | * Generalized Timing Formula is derived from: |
Daniel Vetter | 2e7a570 | 2016-06-01 23:40:36 +0200 | [diff] [blame] | 547 | * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 548 | * GTF Spreadsheet by Andy Morrish (1/5/97) |
| 549 | * available at http://www.vesa.org |
| 550 | * |
| 551 | * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c. |
| 552 | * What I have done is to translate it by using integer calculation. |
| 553 | * I also refer to the function of fb_get_mode in the file of |
| 554 | * drivers/video/fbmon.c |
| 555 | * |
Daniel Vetter | da5335b | 2016-05-31 22:55:13 +0200 | [diff] [blame] | 556 | * Standard GTF parameters:: |
| 557 | * |
Danilo Cesar Lemes de Paula | f03d8ed | 2015-11-25 18:07:55 +0100 | [diff] [blame] | 558 | * M = 600 |
| 559 | * C = 40 |
| 560 | * K = 128 |
| 561 | * J = 20 |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 562 | * |
| 563 | * Returns: |
| 564 | * The modeline based on the GTF algorithm stored in a drm_display_mode object. |
| 565 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
| 566 | * when no mode could be allocated. |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 567 | */ |
| 568 | struct drm_display_mode * |
| 569 | drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 570 | bool interlaced, int margins) |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 571 | { |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 572 | return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, |
| 573 | interlaced, margins, |
| 574 | 600, 40 * 2, 128, 20 * 2); |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 575 | } |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 576 | EXPORT_SYMBOL(drm_gtf_mode); |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 577 | |
Tomi Valkeinen | a38884f | 2013-03-12 10:15:43 +0200 | [diff] [blame] | 578 | #ifdef CONFIG_VIDEOMODE_HELPERS |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 579 | /** |
| 580 | * drm_display_mode_from_videomode - fill in @dmode using @vm, |
| 581 | * @vm: videomode structure to use as source |
| 582 | * @dmode: drm_display_mode structure to use as destination |
| 583 | * |
| 584 | * Fills out @dmode using the display mode specified in @vm. |
| 585 | */ |
Daniel Vetter | ba0c242 | 2014-01-23 16:28:50 +0100 | [diff] [blame] | 586 | void drm_display_mode_from_videomode(const struct videomode *vm, |
| 587 | struct drm_display_mode *dmode) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 588 | { |
| 589 | dmode->hdisplay = vm->hactive; |
| 590 | dmode->hsync_start = dmode->hdisplay + vm->hfront_porch; |
| 591 | dmode->hsync_end = dmode->hsync_start + vm->hsync_len; |
| 592 | dmode->htotal = dmode->hsync_end + vm->hback_porch; |
| 593 | |
| 594 | dmode->vdisplay = vm->vactive; |
| 595 | dmode->vsync_start = dmode->vdisplay + vm->vfront_porch; |
| 596 | dmode->vsync_end = dmode->vsync_start + vm->vsync_len; |
| 597 | dmode->vtotal = dmode->vsync_end + vm->vback_porch; |
| 598 | |
| 599 | dmode->clock = vm->pixelclock / 1000; |
| 600 | |
| 601 | dmode->flags = 0; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 602 | if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 603 | dmode->flags |= DRM_MODE_FLAG_PHSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 604 | else if (vm->flags & DISPLAY_FLAGS_HSYNC_LOW) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 605 | dmode->flags |= DRM_MODE_FLAG_NHSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 606 | if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 607 | dmode->flags |= DRM_MODE_FLAG_PVSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 608 | else if (vm->flags & DISPLAY_FLAGS_VSYNC_LOW) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 609 | dmode->flags |= DRM_MODE_FLAG_NVSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 610 | if (vm->flags & DISPLAY_FLAGS_INTERLACED) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 611 | dmode->flags |= DRM_MODE_FLAG_INTERLACE; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 612 | if (vm->flags & DISPLAY_FLAGS_DOUBLESCAN) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 613 | dmode->flags |= DRM_MODE_FLAG_DBLSCAN; |
Steffen Trumtrar | 328a471 | 2013-05-27 12:33:35 +0000 | [diff] [blame] | 614 | if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) |
| 615 | dmode->flags |= DRM_MODE_FLAG_DBLCLK; |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 616 | drm_mode_set_name(dmode); |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 617 | } |
| 618 | EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 619 | |
Steve Longerbeam | d490f45 | 2014-12-18 18:00:22 -0800 | [diff] [blame] | 620 | /** |
| 621 | * drm_display_mode_to_videomode - fill in @vm using @dmode, |
| 622 | * @dmode: drm_display_mode structure to use as source |
| 623 | * @vm: videomode structure to use as destination |
| 624 | * |
| 625 | * Fills out @vm using the display mode specified in @dmode. |
| 626 | */ |
| 627 | void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, |
| 628 | struct videomode *vm) |
| 629 | { |
| 630 | vm->hactive = dmode->hdisplay; |
| 631 | vm->hfront_porch = dmode->hsync_start - dmode->hdisplay; |
| 632 | vm->hsync_len = dmode->hsync_end - dmode->hsync_start; |
| 633 | vm->hback_porch = dmode->htotal - dmode->hsync_end; |
| 634 | |
| 635 | vm->vactive = dmode->vdisplay; |
| 636 | vm->vfront_porch = dmode->vsync_start - dmode->vdisplay; |
| 637 | vm->vsync_len = dmode->vsync_end - dmode->vsync_start; |
| 638 | vm->vback_porch = dmode->vtotal - dmode->vsync_end; |
| 639 | |
| 640 | vm->pixelclock = dmode->clock * 1000; |
| 641 | |
| 642 | vm->flags = 0; |
| 643 | if (dmode->flags & DRM_MODE_FLAG_PHSYNC) |
| 644 | vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH; |
| 645 | else if (dmode->flags & DRM_MODE_FLAG_NHSYNC) |
| 646 | vm->flags |= DISPLAY_FLAGS_HSYNC_LOW; |
| 647 | if (dmode->flags & DRM_MODE_FLAG_PVSYNC) |
| 648 | vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH; |
| 649 | else if (dmode->flags & DRM_MODE_FLAG_NVSYNC) |
| 650 | vm->flags |= DISPLAY_FLAGS_VSYNC_LOW; |
| 651 | if (dmode->flags & DRM_MODE_FLAG_INTERLACE) |
| 652 | vm->flags |= DISPLAY_FLAGS_INTERLACED; |
| 653 | if (dmode->flags & DRM_MODE_FLAG_DBLSCAN) |
| 654 | vm->flags |= DISPLAY_FLAGS_DOUBLESCAN; |
| 655 | if (dmode->flags & DRM_MODE_FLAG_DBLCLK) |
| 656 | vm->flags |= DISPLAY_FLAGS_DOUBLECLK; |
| 657 | } |
| 658 | EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); |
| 659 | |
Lothar Waßmann | cb34d7f | 2016-08-16 15:34:37 +0200 | [diff] [blame] | 660 | /** |
| 661 | * drm_bus_flags_from_videomode - extract information about pixelclk and |
| 662 | * DE polarity from videomode and store it in a separate variable |
| 663 | * @vm: videomode structure to use |
| 664 | * @bus_flags: information about pixelclk and DE polarity will be stored here |
| 665 | * |
| 666 | * Sets DRM_BUS_FLAG_DE_(LOW|HIGH) and DRM_BUS_FLAG_PIXDATA_(POS|NEG)EDGE |
| 667 | * in @bus_flags according to DISPLAY_FLAGS found in @vm |
| 668 | */ |
Lothar Waßmann | d72daa0 | 2016-07-12 15:30:02 +0200 | [diff] [blame] | 669 | void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags) |
| 670 | { |
| 671 | *bus_flags = 0; |
| 672 | if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) |
| 673 | *bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE; |
| 674 | if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) |
| 675 | *bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE; |
| 676 | |
| 677 | if (vm->flags & DISPLAY_FLAGS_DE_LOW) |
| 678 | *bus_flags |= DRM_BUS_FLAG_DE_LOW; |
| 679 | if (vm->flags & DISPLAY_FLAGS_DE_HIGH) |
| 680 | *bus_flags |= DRM_BUS_FLAG_DE_HIGH; |
| 681 | } |
| 682 | EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode); |
| 683 | |
Tomi Valkeinen | a38884f | 2013-03-12 10:15:43 +0200 | [diff] [blame] | 684 | #ifdef CONFIG_OF |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 685 | /** |
| 686 | * of_get_drm_display_mode - get a drm_display_mode from devicetree |
| 687 | * @np: device_node with the timing specification |
| 688 | * @dmode: will be set to the return value |
Lothar Waßmann | cb34d7f | 2016-08-16 15:34:37 +0200 | [diff] [blame] | 689 | * @bus_flags: information about pixelclk and DE polarity |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 690 | * @index: index into the list of display timings in devicetree |
| 691 | * |
| 692 | * This function is expensive and should only be used, if only one mode is to be |
| 693 | * read from DT. To get multiple modes start with of_get_display_timings and |
| 694 | * work with that instead. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 695 | * |
| 696 | * Returns: |
| 697 | * 0 on success, a negative errno code when no of videomode node was found. |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 698 | */ |
| 699 | int of_get_drm_display_mode(struct device_node *np, |
Lothar Waßmann | fafc79e | 2016-07-12 15:30:03 +0200 | [diff] [blame] | 700 | struct drm_display_mode *dmode, u32 *bus_flags, |
| 701 | int index) |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 702 | { |
| 703 | struct videomode vm; |
| 704 | int ret; |
| 705 | |
| 706 | ret = of_get_videomode(np, &vm, index); |
| 707 | if (ret) |
| 708 | return ret; |
| 709 | |
| 710 | drm_display_mode_from_videomode(&vm, dmode); |
Lothar Waßmann | fafc79e | 2016-07-12 15:30:03 +0200 | [diff] [blame] | 711 | if (bus_flags) |
| 712 | drm_bus_flags_from_videomode(&vm, bus_flags); |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 713 | |
| 714 | pr_debug("%s: got %dx%d display mode from %s\n", |
| 715 | of_node_full_name(np), vm.hactive, vm.vactive, np->name); |
| 716 | drm_mode_debug_printmodeline(dmode); |
| 717 | |
| 718 | return 0; |
| 719 | } |
| 720 | EXPORT_SYMBOL_GPL(of_get_drm_display_mode); |
Tomi Valkeinen | a38884f | 2013-03-12 10:15:43 +0200 | [diff] [blame] | 721 | #endif /* CONFIG_OF */ |
| 722 | #endif /* CONFIG_VIDEOMODE_HELPERS */ |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 723 | |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 724 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 725 | * drm_mode_set_name - set the name on a mode |
| 726 | * @mode: name will be set in this mode |
| 727 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 728 | * Set the name of @mode to a standard format which is <hdisplay>x<vdisplay> |
| 729 | * with an optional 'i' suffix for interlaced modes. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 730 | */ |
| 731 | void drm_mode_set_name(struct drm_display_mode *mode) |
| 732 | { |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 733 | bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); |
| 734 | |
| 735 | snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s", |
| 736 | mode->hdisplay, mode->vdisplay, |
| 737 | interlaced ? "i" : ""); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 738 | } |
| 739 | EXPORT_SYMBOL(drm_mode_set_name); |
| 740 | |
Daniel Vetter | 30ecad7 | 2015-12-09 09:29:36 +0100 | [diff] [blame] | 741 | /** |
| 742 | * drm_mode_hsync - get the hsync of a mode |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 743 | * @mode: mode |
| 744 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 745 | * Returns: |
| 746 | * @modes's hsync rate in kHz, rounded to the nearest integer. Calculates the |
| 747 | * value first if it is not yet set. |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 748 | */ |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 749 | int drm_mode_hsync(const struct drm_display_mode *mode) |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 750 | { |
| 751 | unsigned int calc_val; |
| 752 | |
| 753 | if (mode->hsync) |
| 754 | return mode->hsync; |
| 755 | |
Tina Zhang | 716d3dd | 2019-01-23 15:28:59 +0800 | [diff] [blame] | 756 | if (mode->htotal <= 0) |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 757 | return 0; |
| 758 | |
| 759 | calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */ |
| 760 | calc_val += 500; /* round to 1000Hz */ |
| 761 | calc_val /= 1000; /* truncate to kHz */ |
| 762 | |
| 763 | return calc_val; |
| 764 | } |
| 765 | EXPORT_SYMBOL(drm_mode_hsync); |
| 766 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 767 | /** |
| 768 | * drm_mode_vrefresh - get the vrefresh of a mode |
| 769 | * @mode: mode |
| 770 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 771 | * Returns: |
| 772 | * @modes's vrefresh rate in Hz, rounded to the nearest integer. Calculates the |
| 773 | * value first if it is not yet set. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 774 | */ |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 775 | int drm_mode_vrefresh(const struct drm_display_mode *mode) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 776 | { |
| 777 | int refresh = 0; |
| 778 | unsigned int calc_val; |
| 779 | |
| 780 | if (mode->vrefresh > 0) |
| 781 | refresh = mode->vrefresh; |
| 782 | else if (mode->htotal > 0 && mode->vtotal > 0) { |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 783 | int vtotal; |
| 784 | vtotal = mode->vtotal; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 785 | /* work out vrefresh the value will be x1000 */ |
| 786 | calc_val = (mode->clock * 1000); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 787 | calc_val /= mode->htotal; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 788 | refresh = (calc_val + vtotal / 2) / vtotal; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 789 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 790 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) |
| 791 | refresh *= 2; |
| 792 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
| 793 | refresh /= 2; |
| 794 | if (mode->vscan > 1) |
| 795 | refresh /= mode->vscan; |
| 796 | } |
| 797 | return refresh; |
| 798 | } |
| 799 | EXPORT_SYMBOL(drm_mode_vrefresh); |
| 800 | |
| 801 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 802 | * drm_mode_set_crtcinfo - set CRTC modesetting timing parameters |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 803 | * @p: mode |
Damien Lespiau | 448cce2 | 2013-09-25 16:45:35 +0100 | [diff] [blame] | 804 | * @adjust_flags: a combination of adjustment flags |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 805 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 806 | * Setup the CRTC modesetting timing parameters for @p, adjusting if necessary. |
Damien Lespiau | 448cce2 | 2013-09-25 16:45:35 +0100 | [diff] [blame] | 807 | * |
| 808 | * - The CRTC_INTERLACE_HALVE_V flag can be used to halve vertical timings of |
| 809 | * interlaced modes. |
| 810 | * - The CRTC_STEREO_DOUBLE flag can be used to compute the timings for |
| 811 | * buffers containing two eyes (only adjust the timings when needed, eg. for |
| 812 | * "frame packing" or "side by side full"). |
Gustavo Padovan | ecb7e16 | 2014-12-01 15:40:09 -0800 | [diff] [blame] | 813 | * - The CRTC_NO_DBLSCAN and CRTC_NO_VSCAN flags request that adjustment *not* |
| 814 | * be performed for doublescan and vscan > 1 modes respectively. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 815 | */ |
| 816 | void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) |
| 817 | { |
| 818 | if ((p == NULL) || ((p->type & DRM_MODE_TYPE_CRTC_C) == DRM_MODE_TYPE_BUILTIN)) |
| 819 | return; |
| 820 | |
Damien Lespiau | bde2dcf | 2013-09-25 16:45:34 +0100 | [diff] [blame] | 821 | p->crtc_clock = p->clock; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 822 | p->crtc_hdisplay = p->hdisplay; |
| 823 | p->crtc_hsync_start = p->hsync_start; |
| 824 | p->crtc_hsync_end = p->hsync_end; |
| 825 | p->crtc_htotal = p->htotal; |
| 826 | p->crtc_hskew = p->hskew; |
| 827 | p->crtc_vdisplay = p->vdisplay; |
| 828 | p->crtc_vsync_start = p->vsync_start; |
| 829 | p->crtc_vsync_end = p->vsync_end; |
| 830 | p->crtc_vtotal = p->vtotal; |
| 831 | |
| 832 | if (p->flags & DRM_MODE_FLAG_INTERLACE) { |
| 833 | if (adjust_flags & CRTC_INTERLACE_HALVE_V) { |
| 834 | p->crtc_vdisplay /= 2; |
| 835 | p->crtc_vsync_start /= 2; |
| 836 | p->crtc_vsync_end /= 2; |
| 837 | p->crtc_vtotal /= 2; |
| 838 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 839 | } |
| 840 | |
Gustavo Padovan | ecb7e16 | 2014-12-01 15:40:09 -0800 | [diff] [blame] | 841 | if (!(adjust_flags & CRTC_NO_DBLSCAN)) { |
| 842 | if (p->flags & DRM_MODE_FLAG_DBLSCAN) { |
| 843 | p->crtc_vdisplay *= 2; |
| 844 | p->crtc_vsync_start *= 2; |
| 845 | p->crtc_vsync_end *= 2; |
| 846 | p->crtc_vtotal *= 2; |
| 847 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 848 | } |
| 849 | |
Gustavo Padovan | ecb7e16 | 2014-12-01 15:40:09 -0800 | [diff] [blame] | 850 | if (!(adjust_flags & CRTC_NO_VSCAN)) { |
| 851 | if (p->vscan > 1) { |
| 852 | p->crtc_vdisplay *= p->vscan; |
| 853 | p->crtc_vsync_start *= p->vscan; |
| 854 | p->crtc_vsync_end *= p->vscan; |
| 855 | p->crtc_vtotal *= p->vscan; |
| 856 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 857 | } |
| 858 | |
Damien Lespiau | 448cce2 | 2013-09-25 16:45:35 +0100 | [diff] [blame] | 859 | if (adjust_flags & CRTC_STEREO_DOUBLE) { |
| 860 | unsigned int layout = p->flags & DRM_MODE_FLAG_3D_MASK; |
| 861 | |
| 862 | switch (layout) { |
| 863 | case DRM_MODE_FLAG_3D_FRAME_PACKING: |
| 864 | p->crtc_clock *= 2; |
| 865 | p->crtc_vdisplay += p->crtc_vtotal; |
| 866 | p->crtc_vsync_start += p->crtc_vtotal; |
| 867 | p->crtc_vsync_end += p->crtc_vtotal; |
| 868 | p->crtc_vtotal += p->crtc_vtotal; |
| 869 | break; |
| 870 | } |
| 871 | } |
| 872 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 873 | p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay); |
| 874 | p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal); |
| 875 | p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay); |
| 876 | p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 877 | } |
| 878 | EXPORT_SYMBOL(drm_mode_set_crtcinfo); |
| 879 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 880 | /** |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 881 | * drm_mode_copy - copy the mode |
| 882 | * @dst: mode to overwrite |
| 883 | * @src: mode to copy |
| 884 | * |
Ville Syrjälä | 72e45e9 | 2013-05-31 12:17:06 +0000 | [diff] [blame] | 885 | * Copy an existing mode into another mode, preserving the object id and |
| 886 | * list head of the destination mode. |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 887 | */ |
| 888 | void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) |
| 889 | { |
| 890 | int id = dst->base.id; |
Ville Syrjälä | 72e45e9 | 2013-05-31 12:17:06 +0000 | [diff] [blame] | 891 | struct list_head head = dst->head; |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 892 | |
| 893 | *dst = *src; |
| 894 | dst->base.id = id; |
Ville Syrjälä | 72e45e9 | 2013-05-31 12:17:06 +0000 | [diff] [blame] | 895 | dst->head = head; |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 896 | } |
| 897 | EXPORT_SYMBOL(drm_mode_copy); |
| 898 | |
| 899 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 900 | * drm_mode_duplicate - allocate and duplicate an existing mode |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 901 | * @dev: drm_device to allocate the duplicated mode for |
| 902 | * @mode: mode to duplicate |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 903 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 904 | * Just allocate a new mode, copy the existing mode into it, and return |
| 905 | * a pointer to it. Used to create new instances of established modes. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 906 | * |
| 907 | * Returns: |
| 908 | * Pointer to duplicated mode on success, NULL on error. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 909 | */ |
| 910 | struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 911 | const struct drm_display_mode *mode) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 912 | { |
| 913 | struct drm_display_mode *nmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 914 | |
| 915 | nmode = drm_mode_create(dev); |
| 916 | if (!nmode) |
| 917 | return NULL; |
| 918 | |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 919 | drm_mode_copy(nmode, mode); |
| 920 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 921 | return nmode; |
| 922 | } |
| 923 | EXPORT_SYMBOL(drm_mode_duplicate); |
| 924 | |
| 925 | /** |
| 926 | * drm_mode_equal - test modes for equality |
| 927 | * @mode1: first mode |
| 928 | * @mode2: second mode |
| 929 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 930 | * Check to see if @mode1 and @mode2 are equivalent. |
| 931 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 932 | * Returns: |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 933 | * True if the modes are equal, false otherwise. |
| 934 | */ |
Ville Syrjälä | 0b3904a | 2012-10-25 18:05:05 +0000 | [diff] [blame] | 935 | bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 936 | { |
Daniel Stone | 5427095 | 2015-03-19 04:33:02 +0000 | [diff] [blame] | 937 | if (!mode1 && !mode2) |
| 938 | return true; |
| 939 | |
| 940 | if (!mode1 || !mode2) |
| 941 | return false; |
| 942 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 943 | /* do clock check convert to PICOS so fb modes get matched |
| 944 | * the same */ |
| 945 | if (mode1->clock && mode2->clock) { |
| 946 | if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock)) |
| 947 | return false; |
| 948 | } else if (mode1->clock != mode2->clock) |
| 949 | return false; |
| 950 | |
Ville Syrjälä | 4c6bcf4 | 2015-11-16 21:05:12 +0200 | [diff] [blame] | 951 | return drm_mode_equal_no_clocks(mode1, mode2); |
| 952 | } |
| 953 | EXPORT_SYMBOL(drm_mode_equal); |
| 954 | |
| 955 | /** |
| 956 | * drm_mode_equal_no_clocks - test modes for equality |
| 957 | * @mode1: first mode |
| 958 | * @mode2: second mode |
| 959 | * |
| 960 | * Check to see if @mode1 and @mode2 are equivalent, but |
| 961 | * don't check the pixel clocks. |
| 962 | * |
| 963 | * Returns: |
| 964 | * True if the modes are equal, false otherwise. |
| 965 | */ |
| 966 | bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
| 967 | { |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 968 | if ((mode1->flags & DRM_MODE_FLAG_3D_MASK) != |
| 969 | (mode2->flags & DRM_MODE_FLAG_3D_MASK)) |
| 970 | return false; |
| 971 | |
| 972 | return drm_mode_equal_no_clocks_no_stereo(mode1, mode2); |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 973 | } |
Ville Syrjälä | 4c6bcf4 | 2015-11-16 21:05:12 +0200 | [diff] [blame] | 974 | EXPORT_SYMBOL(drm_mode_equal_no_clocks); |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 975 | |
| 976 | /** |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 977 | * drm_mode_equal_no_clocks_no_stereo - test modes for equality |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 978 | * @mode1: first mode |
| 979 | * @mode2: second mode |
| 980 | * |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 981 | * Check to see if @mode1 and @mode2 are equivalent, but |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 982 | * don't check the pixel clocks nor the stereo layout. |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 983 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 984 | * Returns: |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 985 | * True if the modes are equal, false otherwise. |
| 986 | */ |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 987 | bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, |
| 988 | const struct drm_display_mode *mode2) |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 989 | { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 990 | if (mode1->hdisplay == mode2->hdisplay && |
| 991 | mode1->hsync_start == mode2->hsync_start && |
| 992 | mode1->hsync_end == mode2->hsync_end && |
| 993 | mode1->htotal == mode2->htotal && |
| 994 | mode1->hskew == mode2->hskew && |
| 995 | mode1->vdisplay == mode2->vdisplay && |
| 996 | mode1->vsync_start == mode2->vsync_start && |
| 997 | mode1->vsync_end == mode2->vsync_end && |
| 998 | mode1->vtotal == mode2->vtotal && |
| 999 | mode1->vscan == mode2->vscan && |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 1000 | (mode1->flags & ~DRM_MODE_FLAG_3D_MASK) == |
| 1001 | (mode2->flags & ~DRM_MODE_FLAG_3D_MASK)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1002 | return true; |
| 1003 | |
| 1004 | return false; |
| 1005 | } |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 1006 | EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1007 | |
| 1008 | /** |
Ville Syrjälä | abc0b14 | 2014-12-17 13:56:23 +0200 | [diff] [blame] | 1009 | * drm_mode_validate_basic - make sure the mode is somewhat sane |
| 1010 | * @mode: mode to check |
| 1011 | * |
| 1012 | * Check that the mode timings are at least somewhat reasonable. |
| 1013 | * Any hardware specific limits are left up for each driver to check. |
| 1014 | * |
| 1015 | * Returns: |
| 1016 | * The mode status |
| 1017 | */ |
| 1018 | enum drm_mode_status |
| 1019 | drm_mode_validate_basic(const struct drm_display_mode *mode) |
| 1020 | { |
| 1021 | if (mode->clock == 0) |
| 1022 | return MODE_CLOCK_LOW; |
| 1023 | |
| 1024 | if (mode->hdisplay == 0 || |
| 1025 | mode->hsync_start < mode->hdisplay || |
| 1026 | mode->hsync_end < mode->hsync_start || |
| 1027 | mode->htotal < mode->hsync_end) |
| 1028 | return MODE_H_ILLEGAL; |
| 1029 | |
| 1030 | if (mode->vdisplay == 0 || |
| 1031 | mode->vsync_start < mode->vdisplay || |
| 1032 | mode->vsync_end < mode->vsync_start || |
| 1033 | mode->vtotal < mode->vsync_end) |
| 1034 | return MODE_V_ILLEGAL; |
| 1035 | |
| 1036 | return MODE_OK; |
| 1037 | } |
| 1038 | EXPORT_SYMBOL(drm_mode_validate_basic); |
| 1039 | |
| 1040 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1041 | * drm_mode_validate_size - make sure modes adhere to size constraints |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1042 | * @mode: mode to check |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1043 | * @maxX: maximum width |
| 1044 | * @maxY: maximum height |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1045 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1046 | * This function is a helper which can be used to validate modes against size |
| 1047 | * limitations of the DRM device/connector. If a mode is too big its status |
Masanari Iida | 32197aa | 2014-10-20 23:53:13 +0900 | [diff] [blame] | 1048 | * member is updated with the appropriate validation failure code. The list |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1049 | * itself is not changed. |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1050 | * |
| 1051 | * Returns: |
| 1052 | * The mode status |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1053 | */ |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1054 | enum drm_mode_status |
| 1055 | drm_mode_validate_size(const struct drm_display_mode *mode, |
| 1056 | int maxX, int maxY) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1057 | { |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1058 | if (maxX > 0 && mode->hdisplay > maxX) |
| 1059 | return MODE_VIRTUAL_X; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1060 | |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1061 | if (maxY > 0 && mode->vdisplay > maxY) |
| 1062 | return MODE_VIRTUAL_Y; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1063 | |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1064 | return MODE_OK; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1065 | } |
| 1066 | EXPORT_SYMBOL(drm_mode_validate_size); |
| 1067 | |
Ville Syrjälä | e4bf44b | 2015-02-02 19:13:57 +0200 | [diff] [blame] | 1068 | #define MODE_STATUS(status) [MODE_ ## status + 3] = #status |
| 1069 | |
| 1070 | static const char * const drm_mode_status_names[] = { |
| 1071 | MODE_STATUS(OK), |
| 1072 | MODE_STATUS(HSYNC), |
| 1073 | MODE_STATUS(VSYNC), |
| 1074 | MODE_STATUS(H_ILLEGAL), |
| 1075 | MODE_STATUS(V_ILLEGAL), |
| 1076 | MODE_STATUS(BAD_WIDTH), |
| 1077 | MODE_STATUS(NOMODE), |
| 1078 | MODE_STATUS(NO_INTERLACE), |
| 1079 | MODE_STATUS(NO_DBLESCAN), |
| 1080 | MODE_STATUS(NO_VSCAN), |
| 1081 | MODE_STATUS(MEM), |
| 1082 | MODE_STATUS(VIRTUAL_X), |
| 1083 | MODE_STATUS(VIRTUAL_Y), |
| 1084 | MODE_STATUS(MEM_VIRT), |
| 1085 | MODE_STATUS(NOCLOCK), |
| 1086 | MODE_STATUS(CLOCK_HIGH), |
| 1087 | MODE_STATUS(CLOCK_LOW), |
| 1088 | MODE_STATUS(CLOCK_RANGE), |
| 1089 | MODE_STATUS(BAD_HVALUE), |
| 1090 | MODE_STATUS(BAD_VVALUE), |
| 1091 | MODE_STATUS(BAD_VSCAN), |
| 1092 | MODE_STATUS(HSYNC_NARROW), |
| 1093 | MODE_STATUS(HSYNC_WIDE), |
| 1094 | MODE_STATUS(HBLANK_NARROW), |
| 1095 | MODE_STATUS(HBLANK_WIDE), |
| 1096 | MODE_STATUS(VSYNC_NARROW), |
| 1097 | MODE_STATUS(VSYNC_WIDE), |
| 1098 | MODE_STATUS(VBLANK_NARROW), |
| 1099 | MODE_STATUS(VBLANK_WIDE), |
| 1100 | MODE_STATUS(PANEL), |
| 1101 | MODE_STATUS(INTERLACE_WIDTH), |
| 1102 | MODE_STATUS(ONE_WIDTH), |
| 1103 | MODE_STATUS(ONE_HEIGHT), |
| 1104 | MODE_STATUS(ONE_SIZE), |
| 1105 | MODE_STATUS(NO_REDUCED), |
| 1106 | MODE_STATUS(NO_STEREO), |
Ville Syrjälä | 5ba8940 | 2015-12-10 22:39:08 +0200 | [diff] [blame] | 1107 | MODE_STATUS(STALE), |
Ville Syrjälä | e4bf44b | 2015-02-02 19:13:57 +0200 | [diff] [blame] | 1108 | MODE_STATUS(BAD), |
| 1109 | MODE_STATUS(ERROR), |
| 1110 | }; |
| 1111 | |
| 1112 | #undef MODE_STATUS |
| 1113 | |
| 1114 | static const char *drm_get_mode_status_name(enum drm_mode_status status) |
| 1115 | { |
| 1116 | int index = status + 3; |
| 1117 | |
| 1118 | if (WARN_ON(index < 0 || index >= ARRAY_SIZE(drm_mode_status_names))) |
| 1119 | return ""; |
| 1120 | |
| 1121 | return drm_mode_status_names[index]; |
| 1122 | } |
| 1123 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1124 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1125 | * drm_mode_prune_invalid - remove invalid modes from mode list |
| 1126 | * @dev: DRM device |
| 1127 | * @mode_list: list of modes to check |
| 1128 | * @verbose: be verbose about it |
| 1129 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1130 | * This helper function can be used to prune a display mode list after |
| 1131 | * validation has been completed. All modes who's status is not MODE_OK will be |
| 1132 | * removed from the list, and if @verbose the status code and mode name is also |
| 1133 | * printed to dmesg. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1134 | */ |
| 1135 | void drm_mode_prune_invalid(struct drm_device *dev, |
| 1136 | struct list_head *mode_list, bool verbose) |
| 1137 | { |
| 1138 | struct drm_display_mode *mode, *t; |
| 1139 | |
| 1140 | list_for_each_entry_safe(mode, t, mode_list, head) { |
| 1141 | if (mode->status != MODE_OK) { |
| 1142 | list_del(&mode->head); |
| 1143 | if (verbose) { |
| 1144 | drm_mode_debug_printmodeline(mode); |
Ville Syrjälä | e4bf44b | 2015-02-02 19:13:57 +0200 | [diff] [blame] | 1145 | DRM_DEBUG_KMS("Not using %s mode: %s\n", |
| 1146 | mode->name, |
| 1147 | drm_get_mode_status_name(mode->status)); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1148 | } |
| 1149 | drm_mode_destroy(dev, mode); |
| 1150 | } |
| 1151 | } |
| 1152 | } |
| 1153 | EXPORT_SYMBOL(drm_mode_prune_invalid); |
| 1154 | |
| 1155 | /** |
| 1156 | * drm_mode_compare - compare modes for favorability |
Dave Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 1157 | * @priv: unused |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1158 | * @lh_a: list_head for first mode |
| 1159 | * @lh_b: list_head for second mode |
| 1160 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1161 | * Compare two modes, given by @lh_a and @lh_b, returning a value indicating |
| 1162 | * which is better. |
| 1163 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1164 | * Returns: |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1165 | * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or |
| 1166 | * positive if @lh_b is better than @lh_a. |
| 1167 | */ |
Dave Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 1168 | static int drm_mode_compare(void *priv, struct list_head *lh_a, struct list_head *lh_b) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1169 | { |
| 1170 | struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head); |
| 1171 | struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head); |
| 1172 | int diff; |
| 1173 | |
| 1174 | diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) - |
| 1175 | ((a->type & DRM_MODE_TYPE_PREFERRED) != 0); |
| 1176 | if (diff) |
| 1177 | return diff; |
| 1178 | diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay; |
| 1179 | if (diff) |
| 1180 | return diff; |
Ville Syrjälä | 9bc3cd5 | 2013-05-31 12:17:08 +0000 | [diff] [blame] | 1181 | |
| 1182 | diff = b->vrefresh - a->vrefresh; |
| 1183 | if (diff) |
| 1184 | return diff; |
| 1185 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1186 | diff = b->clock - a->clock; |
| 1187 | return diff; |
| 1188 | } |
| 1189 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1190 | /** |
| 1191 | * drm_mode_sort - sort mode list |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1192 | * @mode_list: list of drm_display_mode structures to sort |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1193 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1194 | * Sort @mode_list by favorability, moving good modes to the head of the list. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1195 | */ |
| 1196 | void drm_mode_sort(struct list_head *mode_list) |
| 1197 | { |
Dave Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 1198 | list_sort(NULL, mode_list, drm_mode_compare); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1199 | } |
| 1200 | EXPORT_SYMBOL(drm_mode_sort); |
| 1201 | |
| 1202 | /** |
| 1203 | * drm_mode_connector_list_update - update the mode list for the connector |
| 1204 | * @connector: the connector to update |
| 1205 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1206 | * This moves the modes from the @connector probed_modes list |
| 1207 | * to the actual mode list. It compares the probed mode against the current |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1208 | * list and only adds different/new modes. |
| 1209 | * |
| 1210 | * This is just a helper functions doesn't validate any modes itself and also |
| 1211 | * doesn't prune any invalid modes. Callers need to do that themselves. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1212 | */ |
Ville Syrjälä | 6af3e65 | 2015-12-03 23:14:14 +0200 | [diff] [blame] | 1213 | void drm_mode_connector_list_update(struct drm_connector *connector) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1214 | { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1215 | struct drm_display_mode *pmode, *pt; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1216 | |
Daniel Vetter | 6395138 | 2014-01-23 15:14:15 +0100 | [diff] [blame] | 1217 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
| 1218 | |
Ville Syrjälä | 2f8c19e | 2015-12-03 23:14:12 +0200 | [diff] [blame] | 1219 | list_for_each_entry_safe(pmode, pt, &connector->probed_modes, head) { |
| 1220 | struct drm_display_mode *mode; |
| 1221 | bool found_it = false; |
| 1222 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1223 | /* go through current modes checking for the new probed mode */ |
| 1224 | list_for_each_entry(mode, &connector->modes, head) { |
Ville Syrjälä | 2f8c19e | 2015-12-03 23:14:12 +0200 | [diff] [blame] | 1225 | if (!drm_mode_equal(pmode, mode)) |
| 1226 | continue; |
| 1227 | |
| 1228 | found_it = true; |
Ville Syrjälä | fc245f8 | 2015-12-04 15:13:01 +0200 | [diff] [blame] | 1229 | |
| 1230 | /* |
| 1231 | * If the old matching mode is stale (ie. left over |
| 1232 | * from a previous probe) just replace it outright. |
| 1233 | * Otherwise just merge the type bits between all |
| 1234 | * equal probed modes. |
| 1235 | * |
| 1236 | * If two probed modes are considered equal, pick the |
| 1237 | * actual timings from the one that's marked as |
| 1238 | * preferred (in case the match isn't 100%). If |
| 1239 | * multiple or zero preferred modes are present, favor |
| 1240 | * the mode added to the probed_modes list first. |
| 1241 | */ |
| 1242 | if (mode->status == MODE_STALE) { |
| 1243 | drm_mode_copy(mode, pmode); |
| 1244 | } else if ((mode->type & DRM_MODE_TYPE_PREFERRED) == 0 && |
| 1245 | (pmode->type & DRM_MODE_TYPE_PREFERRED) != 0) { |
Ville Syrjälä | 6af3e65 | 2015-12-03 23:14:14 +0200 | [diff] [blame] | 1246 | pmode->type |= mode->type; |
Ville Syrjälä | fc245f8 | 2015-12-04 15:13:01 +0200 | [diff] [blame] | 1247 | drm_mode_copy(mode, pmode); |
| 1248 | } else { |
Ville Syrjälä | 6af3e65 | 2015-12-03 23:14:14 +0200 | [diff] [blame] | 1249 | mode->type |= pmode->type; |
Ville Syrjälä | fc245f8 | 2015-12-04 15:13:01 +0200 | [diff] [blame] | 1250 | } |
| 1251 | |
Ville Syrjälä | 2f8c19e | 2015-12-03 23:14:12 +0200 | [diff] [blame] | 1252 | list_del(&pmode->head); |
| 1253 | drm_mode_destroy(connector->dev, pmode); |
| 1254 | break; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1255 | } |
| 1256 | |
| 1257 | if (!found_it) { |
| 1258 | list_move_tail(&pmode->head, &connector->modes); |
| 1259 | } |
| 1260 | } |
| 1261 | } |
| 1262 | EXPORT_SYMBOL(drm_mode_connector_list_update); |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1263 | |
| 1264 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1265 | * drm_mode_parse_command_line_for_connector - parse command line modeline for connector |
| 1266 | * @mode_option: optional per connector mode option |
| 1267 | * @connector: connector to parse modeline for |
| 1268 | * @mode: preallocated drm_cmdline_mode structure to fill out |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1269 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1270 | * This parses @mode_option command line modeline for modes and options to |
| 1271 | * configure the connector. If @mode_option is NULL the default command line |
| 1272 | * modeline in fb_mode_option will be parsed instead. |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1273 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1274 | * This uses the same parameters as the fb modedb.c, except for an extra |
| 1275 | * force-enable, force-enable-digital and force-disable bit at the end: |
| 1276 | * |
Danilo Cesar Lemes de Paula | f03d8ed | 2015-11-25 18:07:55 +0100 | [diff] [blame] | 1277 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1278 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1279 | * The intermediate drm_cmdline_mode structure is required to store additional |
Yannick Guerrini | 2a97acd | 2015-03-04 09:30:09 +0100 | [diff] [blame] | 1280 | * options from the command line modline like the force-enable/disable flag. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1281 | * |
| 1282 | * Returns: |
| 1283 | * True if a valid modeline has been parsed, false otherwise. |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1284 | */ |
| 1285 | bool drm_mode_parse_command_line_for_connector(const char *mode_option, |
| 1286 | struct drm_connector *connector, |
| 1287 | struct drm_cmdline_mode *mode) |
| 1288 | { |
| 1289 | const char *name; |
| 1290 | unsigned int namelen; |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1291 | bool res_specified = false, bpp_specified = false, refresh_specified = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1292 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1293 | bool yres_specified = false, cvt = false, rb = false; |
| 1294 | bool interlace = false, margins = false, was_digit = false; |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1295 | int i; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1296 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; |
| 1297 | |
Dave Airlie | cb3c438 | 2011-05-04 13:08:58 +1000 | [diff] [blame] | 1298 | #ifdef CONFIG_FB |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1299 | if (!mode_option) |
| 1300 | mode_option = fb_mode_option; |
Dave Airlie | cb3c438 | 2011-05-04 13:08:58 +1000 | [diff] [blame] | 1301 | #endif |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1302 | |
| 1303 | if (!mode_option) { |
| 1304 | mode->specified = false; |
| 1305 | return false; |
| 1306 | } |
| 1307 | |
| 1308 | name = mode_option; |
| 1309 | namelen = strlen(name); |
| 1310 | for (i = namelen-1; i >= 0; i--) { |
| 1311 | switch (name[i]) { |
| 1312 | case '@': |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1313 | if (!refresh_specified && !bpp_specified && |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1314 | !yres_specified && !cvt && !rb && was_digit) { |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1315 | refresh = simple_strtol(&name[i+1], NULL, 10); |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1316 | refresh_specified = true; |
| 1317 | was_digit = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1318 | } else |
| 1319 | goto done; |
| 1320 | break; |
| 1321 | case '-': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1322 | if (!bpp_specified && !yres_specified && !cvt && |
| 1323 | !rb && was_digit) { |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1324 | bpp = simple_strtol(&name[i+1], NULL, 10); |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1325 | bpp_specified = true; |
| 1326 | was_digit = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1327 | } else |
| 1328 | goto done; |
| 1329 | break; |
| 1330 | case 'x': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1331 | if (!yres_specified && was_digit) { |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1332 | yres = simple_strtol(&name[i+1], NULL, 10); |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1333 | yres_specified = true; |
| 1334 | was_digit = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1335 | } else |
| 1336 | goto done; |
Damien Lespiau | 97fbfbf | 2013-05-08 17:03:30 +0100 | [diff] [blame] | 1337 | break; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1338 | case '0' ... '9': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1339 | was_digit = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1340 | break; |
| 1341 | case 'M': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1342 | if (yres_specified || cvt || was_digit) |
| 1343 | goto done; |
| 1344 | cvt = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1345 | break; |
| 1346 | case 'R': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1347 | if (yres_specified || cvt || rb || was_digit) |
| 1348 | goto done; |
| 1349 | rb = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1350 | break; |
| 1351 | case 'm': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1352 | if (cvt || yres_specified || was_digit) |
| 1353 | goto done; |
| 1354 | margins = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1355 | break; |
| 1356 | case 'i': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1357 | if (cvt || yres_specified || was_digit) |
| 1358 | goto done; |
| 1359 | interlace = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1360 | break; |
| 1361 | case 'e': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1362 | if (yres_specified || bpp_specified || refresh_specified || |
| 1363 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
| 1364 | goto done; |
| 1365 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1366 | force = DRM_FORCE_ON; |
| 1367 | break; |
| 1368 | case 'D': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1369 | if (yres_specified || bpp_specified || refresh_specified || |
| 1370 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
| 1371 | goto done; |
| 1372 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1373 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
| 1374 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
| 1375 | force = DRM_FORCE_ON; |
| 1376 | else |
| 1377 | force = DRM_FORCE_ON_DIGITAL; |
| 1378 | break; |
| 1379 | case 'd': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1380 | if (yres_specified || bpp_specified || refresh_specified || |
| 1381 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
| 1382 | goto done; |
| 1383 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1384 | force = DRM_FORCE_OFF; |
| 1385 | break; |
| 1386 | default: |
| 1387 | goto done; |
| 1388 | } |
| 1389 | } |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1390 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1391 | if (i < 0 && yres_specified) { |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1392 | char *ch; |
| 1393 | xres = simple_strtol(name, &ch, 10); |
| 1394 | if ((ch != NULL) && (*ch == 'x')) |
| 1395 | res_specified = true; |
| 1396 | else |
| 1397 | i = ch - name; |
| 1398 | } else if (!yres_specified && was_digit) { |
| 1399 | /* catch mode that begins with digits but has no 'x' */ |
| 1400 | i = 0; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1401 | } |
| 1402 | done: |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1403 | if (i >= 0) { |
LABBE Corentin | 67fe85d | 2016-02-04 15:03:52 +0100 | [diff] [blame] | 1404 | pr_warn("[drm] parse error at position %i in video mode '%s'\n", |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1405 | i, name); |
| 1406 | mode->specified = false; |
| 1407 | return false; |
| 1408 | } |
| 1409 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1410 | if (res_specified) { |
| 1411 | mode->specified = true; |
| 1412 | mode->xres = xres; |
| 1413 | mode->yres = yres; |
| 1414 | } |
| 1415 | |
| 1416 | if (refresh_specified) { |
| 1417 | mode->refresh_specified = true; |
| 1418 | mode->refresh = refresh; |
| 1419 | } |
| 1420 | |
| 1421 | if (bpp_specified) { |
| 1422 | mode->bpp_specified = true; |
| 1423 | mode->bpp = bpp; |
| 1424 | } |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1425 | mode->rb = rb; |
| 1426 | mode->cvt = cvt; |
| 1427 | mode->interlace = interlace; |
| 1428 | mode->margins = margins; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1429 | mode->force = force; |
| 1430 | |
| 1431 | return true; |
| 1432 | } |
| 1433 | EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); |
| 1434 | |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1435 | /** |
| 1436 | * drm_mode_create_from_cmdline_mode - convert a command line modeline into a DRM display mode |
| 1437 | * @dev: DRM device to create the new mode for |
| 1438 | * @cmd: input command line modeline |
| 1439 | * |
| 1440 | * Returns: |
| 1441 | * Pointer to converted mode on success, NULL on error. |
| 1442 | */ |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1443 | struct drm_display_mode * |
| 1444 | drm_mode_create_from_cmdline_mode(struct drm_device *dev, |
| 1445 | struct drm_cmdline_mode *cmd) |
| 1446 | { |
| 1447 | struct drm_display_mode *mode; |
| 1448 | |
| 1449 | if (cmd->cvt) |
| 1450 | mode = drm_cvt_mode(dev, |
| 1451 | cmd->xres, cmd->yres, |
| 1452 | cmd->refresh_specified ? cmd->refresh : 60, |
| 1453 | cmd->rb, cmd->interlace, |
| 1454 | cmd->margins); |
| 1455 | else |
| 1456 | mode = drm_gtf_mode(dev, |
| 1457 | cmd->xres, cmd->yres, |
| 1458 | cmd->refresh_specified ? cmd->refresh : 60, |
| 1459 | cmd->interlace, |
| 1460 | cmd->margins); |
| 1461 | if (!mode) |
| 1462 | return NULL; |
| 1463 | |
Chris Wilson | eaf99c7 | 2014-08-06 10:08:32 +0200 | [diff] [blame] | 1464 | mode->type |= DRM_MODE_TYPE_USERDEF; |
Takashi Iwai | f1dc9aa | 2017-01-09 15:56:14 +0100 | [diff] [blame] | 1465 | /* fix up 1368x768: GFT/CVT can't express 1366 width due to alignment */ |
| 1466 | if (cmd->xres == 1366 && mode->hdisplay == 1368) { |
| 1467 | mode->hdisplay = 1366; |
| 1468 | mode->hsync_start--; |
| 1469 | mode->hsync_end--; |
| 1470 | drm_mode_set_name(mode); |
| 1471 | } |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1472 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
| 1473 | return mode; |
| 1474 | } |
| 1475 | EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); |
Daniel Stone | 934a8a8 | 2015-05-22 13:34:48 +0100 | [diff] [blame] | 1476 | |
| 1477 | /** |
| 1478 | * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo |
| 1479 | * @out: drm_mode_modeinfo struct to return to the user |
| 1480 | * @in: drm_display_mode to use |
| 1481 | * |
| 1482 | * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to |
| 1483 | * the user. |
| 1484 | */ |
| 1485 | void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, |
| 1486 | const struct drm_display_mode *in) |
| 1487 | { |
| 1488 | WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || |
| 1489 | in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || |
| 1490 | in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || |
| 1491 | in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || |
| 1492 | in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, |
| 1493 | "timing values too large for mode info\n"); |
| 1494 | |
| 1495 | out->clock = in->clock; |
| 1496 | out->hdisplay = in->hdisplay; |
| 1497 | out->hsync_start = in->hsync_start; |
| 1498 | out->hsync_end = in->hsync_end; |
| 1499 | out->htotal = in->htotal; |
| 1500 | out->hskew = in->hskew; |
| 1501 | out->vdisplay = in->vdisplay; |
| 1502 | out->vsync_start = in->vsync_start; |
| 1503 | out->vsync_end = in->vsync_end; |
| 1504 | out->vtotal = in->vtotal; |
| 1505 | out->vscan = in->vscan; |
| 1506 | out->vrefresh = in->vrefresh; |
| 1507 | out->flags = in->flags; |
| 1508 | out->type = in->type; |
| 1509 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
| 1510 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
| 1511 | } |
| 1512 | |
| 1513 | /** |
| 1514 | * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode |
| 1515 | * @out: drm_display_mode to return to the user |
| 1516 | * @in: drm_mode_modeinfo to use |
| 1517 | * |
| 1518 | * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to |
| 1519 | * the caller. |
| 1520 | * |
| 1521 | * Returns: |
| 1522 | * Zero on success, negative errno on failure. |
| 1523 | */ |
| 1524 | int drm_mode_convert_umode(struct drm_display_mode *out, |
| 1525 | const struct drm_mode_modeinfo *in) |
| 1526 | { |
| 1527 | int ret = -EINVAL; |
| 1528 | |
| 1529 | if (in->clock > INT_MAX || in->vrefresh > INT_MAX) { |
| 1530 | ret = -ERANGE; |
| 1531 | goto out; |
| 1532 | } |
| 1533 | |
| 1534 | if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) |
| 1535 | goto out; |
| 1536 | |
| 1537 | out->clock = in->clock; |
| 1538 | out->hdisplay = in->hdisplay; |
| 1539 | out->hsync_start = in->hsync_start; |
| 1540 | out->hsync_end = in->hsync_end; |
| 1541 | out->htotal = in->htotal; |
| 1542 | out->hskew = in->hskew; |
| 1543 | out->vdisplay = in->vdisplay; |
| 1544 | out->vsync_start = in->vsync_start; |
| 1545 | out->vsync_end = in->vsync_end; |
| 1546 | out->vtotal = in->vtotal; |
| 1547 | out->vscan = in->vscan; |
| 1548 | out->vrefresh = in->vrefresh; |
| 1549 | out->flags = in->flags; |
| 1550 | out->type = in->type; |
| 1551 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
| 1552 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
| 1553 | |
| 1554 | out->status = drm_mode_validate_basic(out); |
| 1555 | if (out->status != MODE_OK) |
| 1556 | goto out; |
| 1557 | |
Tomi Valkeinen | b201e74 | 2016-05-31 15:03:15 +0300 | [diff] [blame] | 1558 | drm_mode_set_crtcinfo(out, CRTC_INTERLACE_HALVE_V); |
| 1559 | |
Daniel Stone | 934a8a8 | 2015-05-22 13:34:48 +0100 | [diff] [blame] | 1560 | ret = 0; |
| 1561 | |
| 1562 | out: |
| 1563 | return ret; |
Danilo Cesar Lemes de Paula | f03d8ed | 2015-11-25 18:07:55 +0100 | [diff] [blame] | 1564 | } |