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 | { |
Rob Clark | 65c7dc1 | 2016-11-05 11:08:06 -0400 | [diff] [blame] | 52 | DRM_DEBUG_KMS("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode)); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 53 | } |
| 54 | EXPORT_SYMBOL(drm_mode_debug_printmodeline); |
| 55 | |
| 56 | /** |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 57 | * drm_mode_create - create a new display mode |
| 58 | * @dev: DRM device |
| 59 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 60 | * Create a new, cleared drm_display_mode with kzalloc, allocate an ID for it |
| 61 | * and return it. |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 62 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 63 | * Returns: |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 64 | * Pointer to new mode on success, NULL on error. |
| 65 | */ |
| 66 | struct drm_display_mode *drm_mode_create(struct drm_device *dev) |
| 67 | { |
| 68 | struct drm_display_mode *nmode; |
| 69 | |
| 70 | nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); |
| 71 | if (!nmode) |
| 72 | return NULL; |
| 73 | |
| 74 | if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { |
| 75 | kfree(nmode); |
| 76 | return NULL; |
| 77 | } |
| 78 | |
| 79 | return nmode; |
| 80 | } |
| 81 | EXPORT_SYMBOL(drm_mode_create); |
| 82 | |
| 83 | /** |
| 84 | * drm_mode_destroy - remove a mode |
| 85 | * @dev: DRM device |
| 86 | * @mode: mode to remove |
| 87 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 88 | * 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] | 89 | */ |
| 90 | void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) |
| 91 | { |
| 92 | if (!mode) |
| 93 | return; |
| 94 | |
Dave Airlie | 7c8f6d2 | 2016-04-15 15:10:32 +1000 | [diff] [blame] | 95 | drm_mode_object_unregister(dev, &mode->base); |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 96 | |
| 97 | kfree(mode); |
| 98 | } |
| 99 | EXPORT_SYMBOL(drm_mode_destroy); |
| 100 | |
| 101 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 102 | * 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] | 103 | * @connector: connector the new mode |
| 104 | * @mode: mode data |
| 105 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 106 | * Add @mode to @connector's probed_mode list for later use. This list should |
| 107 | * then in a second step get filtered and all the modes actually supported by |
| 108 | * the hardware moved to the @connector's modes list. |
Daniel Vetter | 8bd441b | 2014-01-23 15:35:24 +0100 | [diff] [blame] | 109 | */ |
| 110 | void drm_mode_probed_add(struct drm_connector *connector, |
| 111 | struct drm_display_mode *mode) |
| 112 | { |
| 113 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
| 114 | |
| 115 | list_add_tail(&mode->head, &connector->probed_modes); |
| 116 | } |
| 117 | EXPORT_SYMBOL(drm_mode_probed_add); |
| 118 | |
| 119 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 120 | * drm_cvt_mode -create a modeline based on the CVT algorithm |
| 121 | * @dev: drm device |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 122 | * @hdisplay: hdisplay size |
| 123 | * @vdisplay: vdisplay size |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 124 | * @vrefresh: vrefresh rate |
| 125 | * @reduced: whether to use reduced blanking |
| 126 | * @interlaced: whether to compute an interlaced mode |
| 127 | * @margins: whether to add margins (borders) |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 128 | * |
| 129 | * This function is called to generate the modeline based on CVT algorithm |
| 130 | * according to the hdisplay, vdisplay, vrefresh. |
| 131 | * It is based from the VESA(TM) Coordinated Video Timing Generator by |
| 132 | * Graham Loveridge April 9, 2003 available at |
Justin P. Mattock | 631dd1a | 2010-10-18 11:03:14 +0200 | [diff] [blame] | 133 | * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 134 | * |
| 135 | * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. |
| 136 | * What I have done is to translate it by using integer calculation. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 137 | * |
| 138 | * Returns: |
| 139 | * The modeline based on the CVT algorithm stored in a drm_display_mode object. |
| 140 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
| 141 | * when no mode could be allocated. |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 142 | */ |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 143 | struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, |
| 144 | int vdisplay, int vrefresh, |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 145 | bool reduced, bool interlaced, bool margins) |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 146 | { |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 147 | #define HV_FACTOR 1000 |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 148 | /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
| 149 | #define CVT_MARGIN_PERCENTAGE 18 |
| 150 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
| 151 | #define CVT_H_GRANULARITY 8 |
| 152 | /* 3) Minimum vertical porch (lines) - default 3 */ |
| 153 | #define CVT_MIN_V_PORCH 3 |
| 154 | /* 4) Minimum number of vertical back porch lines - default 6 */ |
| 155 | #define CVT_MIN_V_BPORCH 6 |
| 156 | /* Pixel Clock step (kHz) */ |
| 157 | #define CVT_CLOCK_STEP 250 |
| 158 | struct drm_display_mode *drm_mode; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 159 | unsigned int vfieldrate, hperiod; |
| 160 | int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync; |
| 161 | int interlace; |
Chris Wilson | 8a5bbf3 | 2016-10-21 15:15:40 +0100 | [diff] [blame] | 162 | u64 tmp; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 163 | |
| 164 | /* allocate the drm_display_mode structure. If failure, we will |
| 165 | * return directly |
| 166 | */ |
| 167 | drm_mode = drm_mode_create(dev); |
| 168 | if (!drm_mode) |
| 169 | return NULL; |
| 170 | |
| 171 | /* the CVT default refresh rate is 60Hz */ |
| 172 | if (!vrefresh) |
| 173 | vrefresh = 60; |
| 174 | |
| 175 | /* the required field fresh rate */ |
| 176 | if (interlaced) |
| 177 | vfieldrate = vrefresh * 2; |
| 178 | else |
| 179 | vfieldrate = vrefresh; |
| 180 | |
| 181 | /* horizontal pixels */ |
| 182 | hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY); |
| 183 | |
| 184 | /* determine the left&right borders */ |
| 185 | hmargin = 0; |
| 186 | if (margins) { |
| 187 | hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
| 188 | hmargin -= hmargin % CVT_H_GRANULARITY; |
| 189 | } |
| 190 | /* find the total active pixels */ |
| 191 | drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin; |
| 192 | |
| 193 | /* find the number of lines per field */ |
| 194 | if (interlaced) |
| 195 | vdisplay_rnd = vdisplay / 2; |
| 196 | else |
| 197 | vdisplay_rnd = vdisplay; |
| 198 | |
| 199 | /* find the top & bottom borders */ |
| 200 | vmargin = 0; |
| 201 | if (margins) |
| 202 | vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
| 203 | |
Francisco Jerez | 841b411 | 2009-08-12 02:30:09 +0200 | [diff] [blame] | 204 | drm_mode->vdisplay = vdisplay + 2 * vmargin; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 205 | |
| 206 | /* Interlaced */ |
| 207 | if (interlaced) |
| 208 | interlace = 1; |
| 209 | else |
| 210 | interlace = 0; |
| 211 | |
| 212 | /* Determine VSync Width from aspect ratio */ |
| 213 | if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay)) |
| 214 | vsync = 4; |
| 215 | else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay)) |
| 216 | vsync = 5; |
| 217 | else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay)) |
| 218 | vsync = 6; |
| 219 | else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay)) |
| 220 | vsync = 7; |
| 221 | else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay)) |
| 222 | vsync = 7; |
| 223 | else /* custom */ |
| 224 | vsync = 10; |
| 225 | |
| 226 | if (!reduced) { |
| 227 | /* simplify the GTF calculation */ |
| 228 | /* 4) Minimum time of vertical sync + back porch interval (µs) |
| 229 | * default 550.0 |
| 230 | */ |
| 231 | int tmp1, tmp2; |
| 232 | #define CVT_MIN_VSYNC_BP 550 |
| 233 | /* 3) Nominal HSync width (% of line period) - default 8 */ |
| 234 | #define CVT_HSYNC_PERCENTAGE 8 |
| 235 | unsigned int hblank_percentage; |
| 236 | int vsyncandback_porch, vback_porch, hblank; |
| 237 | |
| 238 | /* estimated the horizontal period */ |
| 239 | tmp1 = HV_FACTOR * 1000000 - |
| 240 | CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate; |
| 241 | tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 + |
| 242 | interlace; |
| 243 | hperiod = tmp1 * 2 / (tmp2 * vfieldrate); |
| 244 | |
| 245 | tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1; |
| 246 | /* 9. Find number of lines in sync + backporch */ |
| 247 | if (tmp1 < (vsync + CVT_MIN_V_PORCH)) |
| 248 | vsyncandback_porch = vsync + CVT_MIN_V_PORCH; |
| 249 | else |
| 250 | vsyncandback_porch = tmp1; |
| 251 | /* 10. Find number of lines in back porch */ |
| 252 | vback_porch = vsyncandback_porch - vsync; |
| 253 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + |
| 254 | vsyncandback_porch + CVT_MIN_V_PORCH; |
| 255 | /* 5) Definition of Horizontal blanking time limitation */ |
| 256 | /* Gradient (%/kHz) - default 600 */ |
| 257 | #define CVT_M_FACTOR 600 |
| 258 | /* Offset (%) - default 40 */ |
| 259 | #define CVT_C_FACTOR 40 |
| 260 | /* Blanking time scaling factor - default 128 */ |
| 261 | #define CVT_K_FACTOR 128 |
| 262 | /* Scaling factor weighting - default 20 */ |
| 263 | #define CVT_J_FACTOR 20 |
| 264 | #define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256) |
| 265 | #define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \ |
| 266 | CVT_J_FACTOR) |
| 267 | /* 12. Find ideal blanking duty cycle from formula */ |
| 268 | hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME * |
| 269 | hperiod / 1000; |
| 270 | /* 13. Blanking time */ |
| 271 | if (hblank_percentage < 20 * HV_FACTOR) |
| 272 | hblank_percentage = 20 * HV_FACTOR; |
| 273 | hblank = drm_mode->hdisplay * hblank_percentage / |
| 274 | (100 * HV_FACTOR - hblank_percentage); |
| 275 | hblank -= hblank % (2 * CVT_H_GRANULARITY); |
Yannick Guerrini | 2a97acd | 2015-03-04 09:30:09 +0100 | [diff] [blame] | 276 | /* 14. find the total pixels per line */ |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 277 | drm_mode->htotal = drm_mode->hdisplay + hblank; |
| 278 | drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2; |
| 279 | drm_mode->hsync_start = drm_mode->hsync_end - |
| 280 | (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100; |
| 281 | drm_mode->hsync_start += CVT_H_GRANULARITY - |
| 282 | drm_mode->hsync_start % CVT_H_GRANULARITY; |
| 283 | /* fill the Vsync values */ |
| 284 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH; |
| 285 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
| 286 | } else { |
| 287 | /* Reduced blanking */ |
| 288 | /* Minimum vertical blanking interval time (µs)- default 460 */ |
| 289 | #define CVT_RB_MIN_VBLANK 460 |
| 290 | /* Fixed number of clocks for horizontal sync */ |
| 291 | #define CVT_RB_H_SYNC 32 |
| 292 | /* Fixed number of clocks for horizontal blanking */ |
| 293 | #define CVT_RB_H_BLANK 160 |
| 294 | /* Fixed number of lines for vertical front porch - default 3*/ |
| 295 | #define CVT_RB_VFPORCH 3 |
| 296 | int vbilines; |
| 297 | int tmp1, tmp2; |
| 298 | /* 8. Estimate Horizontal period. */ |
| 299 | tmp1 = HV_FACTOR * 1000000 - |
| 300 | CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate; |
| 301 | tmp2 = vdisplay_rnd + 2 * vmargin; |
| 302 | hperiod = tmp1 / (tmp2 * vfieldrate); |
| 303 | /* 9. Find number of lines in vertical blanking */ |
| 304 | vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1; |
| 305 | /* 10. Check if vertical blanking is sufficient */ |
| 306 | if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH)) |
| 307 | vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH; |
| 308 | /* 11. Find total number of lines in vertical field */ |
| 309 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines; |
| 310 | /* 12. Find total number of pixels in a line */ |
| 311 | drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK; |
| 312 | /* Fill in HSync values */ |
| 313 | drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2; |
Adam Jackson | adde0f2 | 2010-08-23 10:19:14 -0400 | [diff] [blame] | 314 | drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC; |
| 315 | /* Fill in VSync values */ |
| 316 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH; |
| 317 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 318 | } |
| 319 | /* 15/13. Find pixel clock frequency (kHz for xf86) */ |
Chris Wilson | 8a5bbf3 | 2016-10-21 15:15:40 +0100 | [diff] [blame] | 320 | tmp = drm_mode->htotal; /* perform intermediate calcs in u64 */ |
| 321 | tmp *= HV_FACTOR * 1000; |
| 322 | do_div(tmp, hperiod); |
| 323 | tmp -= drm_mode->clock % CVT_CLOCK_STEP; |
| 324 | drm_mode->clock = tmp; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 325 | /* 18/16. Find actual vertical frame frequency */ |
| 326 | /* ignore - just set the mode flag for interlaced */ |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 327 | if (interlaced) { |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 328 | drm_mode->vtotal *= 2; |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 329 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
| 330 | } |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 331 | /* Fill the mode line name */ |
| 332 | drm_mode_set_name(drm_mode); |
| 333 | if (reduced) |
| 334 | drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC | |
| 335 | DRM_MODE_FLAG_NVSYNC); |
| 336 | else |
| 337 | drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | |
| 338 | DRM_MODE_FLAG_NHSYNC); |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 339 | |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 340 | return drm_mode; |
Zhao Yakui | d782c3f | 2009-06-22 13:17:08 +0800 | [diff] [blame] | 341 | } |
| 342 | EXPORT_SYMBOL(drm_cvt_mode); |
| 343 | |
| 344 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 345 | * drm_gtf_mode_complex - create the modeline based on the full GTF algorithm |
| 346 | * @dev: drm device |
| 347 | * @hdisplay: hdisplay size |
| 348 | * @vdisplay: vdisplay size |
| 349 | * @vrefresh: vrefresh rate. |
| 350 | * @interlaced: whether to compute an interlaced mode |
| 351 | * @margins: desired margin (borders) size |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 352 | * @GTF_M: extended GTF formula parameters |
| 353 | * @GTF_2C: extended GTF formula parameters |
| 354 | * @GTF_K: extended GTF formula parameters |
| 355 | * @GTF_2J: extended GTF formula parameters |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 356 | * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 357 | * GTF feature blocks specify C and J in multiples of 0.5, so we pass them |
| 358 | * 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] | 359 | * |
| 360 | * Returns: |
| 361 | * The modeline based on the full GTF algorithm stored in a drm_display_mode object. |
| 362 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
| 363 | * when no mode could be allocated. |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 364 | */ |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 365 | struct drm_display_mode * |
| 366 | drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay, |
| 367 | int vrefresh, bool interlaced, int margins, |
| 368 | int GTF_M, int GTF_2C, int GTF_K, int GTF_2J) |
| 369 | { /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 370 | #define GTF_MARGIN_PERCENTAGE 18 |
| 371 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
| 372 | #define GTF_CELL_GRAN 8 |
| 373 | /* 3) Minimum vertical porch (lines) - default 3 */ |
| 374 | #define GTF_MIN_V_PORCH 1 |
| 375 | /* width of vsync in lines */ |
| 376 | #define V_SYNC_RQD 3 |
| 377 | /* width of hsync as % of total line */ |
| 378 | #define H_SYNC_PERCENT 8 |
| 379 | /* min time of vsync + back porch (microsec) */ |
| 380 | #define MIN_VSYNC_PLUS_BP 550 |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 381 | /* C' and M' are part of the Blanking Duty Cycle computation */ |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 382 | #define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2) |
| 383 | #define GTF_M_PRIME (GTF_K * GTF_M / 256) |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 384 | struct drm_display_mode *drm_mode; |
| 385 | unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd; |
| 386 | int top_margin, bottom_margin; |
| 387 | int interlace; |
| 388 | unsigned int hfreq_est; |
| 389 | int vsync_plus_bp, vback_porch; |
| 390 | unsigned int vtotal_lines, vfieldrate_est, hperiod; |
| 391 | unsigned int vfield_rate, vframe_rate; |
| 392 | int left_margin, right_margin; |
| 393 | unsigned int total_active_pixels, ideal_duty_cycle; |
| 394 | unsigned int hblank, total_pixels, pixel_freq; |
| 395 | int hsync, hfront_porch, vodd_front_porch_lines; |
| 396 | unsigned int tmp1, tmp2; |
| 397 | |
| 398 | drm_mode = drm_mode_create(dev); |
| 399 | if (!drm_mode) |
| 400 | return NULL; |
| 401 | |
| 402 | /* 1. In order to give correct results, the number of horizontal |
| 403 | * pixels requested is first processed to ensure that it is divisible |
| 404 | * by the character size, by rounding it to the nearest character |
| 405 | * cell boundary: |
| 406 | */ |
| 407 | hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
| 408 | hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN; |
| 409 | |
| 410 | /* 2. If interlace is requested, the number of vertical lines assumed |
| 411 | * by the calculation must be halved, as the computation calculates |
| 412 | * the number of vertical lines per field. |
| 413 | */ |
| 414 | if (interlaced) |
| 415 | vdisplay_rnd = vdisplay / 2; |
| 416 | else |
| 417 | vdisplay_rnd = vdisplay; |
| 418 | |
| 419 | /* 3. Find the frame rate required: */ |
| 420 | if (interlaced) |
| 421 | vfieldrate_rqd = vrefresh * 2; |
| 422 | else |
| 423 | vfieldrate_rqd = vrefresh; |
| 424 | |
| 425 | /* 4. Find number of lines in Top margin: */ |
| 426 | top_margin = 0; |
| 427 | if (margins) |
| 428 | top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
| 429 | 1000; |
| 430 | /* 5. Find number of lines in bottom margin: */ |
| 431 | bottom_margin = top_margin; |
| 432 | |
| 433 | /* 6. If interlace is required, then set variable interlace: */ |
| 434 | if (interlaced) |
| 435 | interlace = 1; |
| 436 | else |
| 437 | interlace = 0; |
| 438 | |
| 439 | /* 7. Estimate the Horizontal frequency */ |
| 440 | { |
| 441 | tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; |
| 442 | tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) * |
| 443 | 2 + interlace; |
| 444 | hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1; |
| 445 | } |
| 446 | |
| 447 | /* 8. Find the number of lines in V sync + back porch */ |
| 448 | /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */ |
| 449 | vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000; |
| 450 | vsync_plus_bp = (vsync_plus_bp + 500) / 1000; |
| 451 | /* 9. Find the number of lines in V back porch alone: */ |
| 452 | vback_porch = vsync_plus_bp - V_SYNC_RQD; |
| 453 | /* 10. Find the total number of lines in Vertical field period: */ |
| 454 | vtotal_lines = vdisplay_rnd + top_margin + bottom_margin + |
| 455 | vsync_plus_bp + GTF_MIN_V_PORCH; |
| 456 | /* 11. Estimate the Vertical field frequency: */ |
| 457 | vfieldrate_est = hfreq_est / vtotal_lines; |
| 458 | /* 12. Find the actual horizontal period: */ |
| 459 | hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines); |
| 460 | |
| 461 | /* 13. Find the actual Vertical field frequency: */ |
| 462 | vfield_rate = hfreq_est / vtotal_lines; |
| 463 | /* 14. Find the Vertical frame frequency: */ |
| 464 | if (interlaced) |
| 465 | vframe_rate = vfield_rate / 2; |
| 466 | else |
| 467 | vframe_rate = vfield_rate; |
| 468 | /* 15. Find number of pixels in left margin: */ |
| 469 | if (margins) |
| 470 | left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
| 471 | 1000; |
| 472 | else |
| 473 | left_margin = 0; |
| 474 | |
| 475 | /* 16.Find number of pixels in right margin: */ |
| 476 | right_margin = left_margin; |
| 477 | /* 17.Find total number of active pixels in image and left and right */ |
| 478 | total_active_pixels = hdisplay_rnd + left_margin + right_margin; |
| 479 | /* 18.Find the ideal blanking duty cycle from blanking duty cycle */ |
| 480 | ideal_duty_cycle = GTF_C_PRIME * 1000 - |
| 481 | (GTF_M_PRIME * 1000000 / hfreq_est); |
| 482 | /* 19.Find the number of pixels in the blanking time to the nearest |
| 483 | * double character cell: */ |
| 484 | hblank = total_active_pixels * ideal_duty_cycle / |
| 485 | (100000 - ideal_duty_cycle); |
| 486 | hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN); |
| 487 | hblank = hblank * 2 * GTF_CELL_GRAN; |
| 488 | /* 20.Find total number of pixels: */ |
| 489 | total_pixels = total_active_pixels + hblank; |
| 490 | /* 21.Find pixel clock frequency: */ |
| 491 | pixel_freq = total_pixels * hfreq_est / 1000; |
| 492 | /* Stage 1 computations are now complete; I should really pass |
| 493 | * the results to another function and do the Stage 2 computations, |
| 494 | * but I only need a few more values so I'll just append the |
| 495 | * computations here for now */ |
| 496 | /* 17. Find the number of pixels in the horizontal sync period: */ |
| 497 | hsync = H_SYNC_PERCENT * total_pixels / 100; |
| 498 | hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
| 499 | hsync = hsync * GTF_CELL_GRAN; |
| 500 | /* 18. Find the number of pixels in horizontal front porch period */ |
| 501 | hfront_porch = hblank / 2 - hsync; |
| 502 | /* 36. Find the number of lines in the odd front porch period: */ |
| 503 | vodd_front_porch_lines = GTF_MIN_V_PORCH ; |
| 504 | |
| 505 | /* finally, pack the results in the mode struct */ |
| 506 | drm_mode->hdisplay = hdisplay_rnd; |
| 507 | drm_mode->hsync_start = hdisplay_rnd + hfront_porch; |
| 508 | drm_mode->hsync_end = drm_mode->hsync_start + hsync; |
| 509 | drm_mode->htotal = total_pixels; |
| 510 | drm_mode->vdisplay = vdisplay_rnd; |
| 511 | drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines; |
| 512 | drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD; |
| 513 | drm_mode->vtotal = vtotal_lines; |
| 514 | |
| 515 | drm_mode->clock = pixel_freq; |
| 516 | |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 517 | if (interlaced) { |
| 518 | drm_mode->vtotal *= 2; |
| 519 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
| 520 | } |
| 521 | |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 522 | drm_mode_set_name(drm_mode); |
Adam Jackson | c385e50c | 2010-04-08 19:00:30 +0000 | [diff] [blame] | 523 | if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40) |
| 524 | drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; |
| 525 | else |
| 526 | drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC; |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 527 | |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 528 | return drm_mode; |
| 529 | } |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 530 | EXPORT_SYMBOL(drm_gtf_mode_complex); |
| 531 | |
| 532 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 533 | * drm_gtf_mode - create the modeline based on the GTF algorithm |
| 534 | * @dev: drm device |
| 535 | * @hdisplay: hdisplay size |
| 536 | * @vdisplay: vdisplay size |
| 537 | * @vrefresh: vrefresh rate. |
| 538 | * @interlaced: whether to compute an interlaced mode |
| 539 | * @margins: desired margin (borders) size |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 540 | * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 541 | * return the modeline based on GTF algorithm |
| 542 | * |
| 543 | * This function is to create the modeline based on the GTF algorithm. |
| 544 | * Generalized Timing Formula is derived from: |
Daniel Vetter | 2e7a570 | 2016-06-01 23:40:36 +0200 | [diff] [blame] | 545 | * |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 546 | * GTF Spreadsheet by Andy Morrish (1/5/97) |
| 547 | * available at http://www.vesa.org |
| 548 | * |
| 549 | * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c. |
| 550 | * What I have done is to translate it by using integer calculation. |
| 551 | * I also refer to the function of fb_get_mode in the file of |
| 552 | * drivers/video/fbmon.c |
| 553 | * |
Daniel Vetter | da5335b | 2016-05-31 22:55:13 +0200 | [diff] [blame] | 554 | * Standard GTF parameters:: |
| 555 | * |
Danilo Cesar Lemes de Paula | f03d8ed | 2015-11-25 18:07:55 +0100 | [diff] [blame] | 556 | * M = 600 |
| 557 | * C = 40 |
| 558 | * K = 128 |
| 559 | * J = 20 |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 560 | * |
| 561 | * Returns: |
| 562 | * The modeline based on the GTF algorithm stored in a drm_display_mode object. |
| 563 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
| 564 | * when no mode could be allocated. |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 565 | */ |
| 566 | struct drm_display_mode * |
| 567 | 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] | 568 | bool interlaced, int margins) |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 569 | { |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 570 | return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, |
| 571 | interlaced, margins, |
| 572 | 600, 40 * 2, 128, 20 * 2); |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 573 | } |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 574 | EXPORT_SYMBOL(drm_gtf_mode); |
Adam Jackson | 7a37435 | 2010-03-29 21:43:30 +0000 | [diff] [blame] | 575 | |
Tomi Valkeinen | a38884f | 2013-03-12 10:15:43 +0200 | [diff] [blame] | 576 | #ifdef CONFIG_VIDEOMODE_HELPERS |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 577 | /** |
| 578 | * drm_display_mode_from_videomode - fill in @dmode using @vm, |
| 579 | * @vm: videomode structure to use as source |
| 580 | * @dmode: drm_display_mode structure to use as destination |
| 581 | * |
| 582 | * Fills out @dmode using the display mode specified in @vm. |
| 583 | */ |
Daniel Vetter | ba0c242 | 2014-01-23 16:28:50 +0100 | [diff] [blame] | 584 | void drm_display_mode_from_videomode(const struct videomode *vm, |
| 585 | struct drm_display_mode *dmode) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 586 | { |
| 587 | dmode->hdisplay = vm->hactive; |
| 588 | dmode->hsync_start = dmode->hdisplay + vm->hfront_porch; |
| 589 | dmode->hsync_end = dmode->hsync_start + vm->hsync_len; |
| 590 | dmode->htotal = dmode->hsync_end + vm->hback_porch; |
| 591 | |
| 592 | dmode->vdisplay = vm->vactive; |
| 593 | dmode->vsync_start = dmode->vdisplay + vm->vfront_porch; |
| 594 | dmode->vsync_end = dmode->vsync_start + vm->vsync_len; |
| 595 | dmode->vtotal = dmode->vsync_end + vm->vback_porch; |
| 596 | |
| 597 | dmode->clock = vm->pixelclock / 1000; |
| 598 | |
| 599 | dmode->flags = 0; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 600 | if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 601 | dmode->flags |= DRM_MODE_FLAG_PHSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 602 | else if (vm->flags & DISPLAY_FLAGS_HSYNC_LOW) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 603 | dmode->flags |= DRM_MODE_FLAG_NHSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 604 | if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 605 | dmode->flags |= DRM_MODE_FLAG_PVSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 606 | else if (vm->flags & DISPLAY_FLAGS_VSYNC_LOW) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 607 | dmode->flags |= DRM_MODE_FLAG_NVSYNC; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 608 | if (vm->flags & DISPLAY_FLAGS_INTERLACED) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 609 | dmode->flags |= DRM_MODE_FLAG_INTERLACE; |
Tomi Valkeinen | 06a3307 | 2013-03-12 10:26:45 +0200 | [diff] [blame] | 610 | if (vm->flags & DISPLAY_FLAGS_DOUBLESCAN) |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 611 | dmode->flags |= DRM_MODE_FLAG_DBLSCAN; |
Steffen Trumtrar | 328a471 | 2013-05-27 12:33:35 +0000 | [diff] [blame] | 612 | if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) |
| 613 | dmode->flags |= DRM_MODE_FLAG_DBLCLK; |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 614 | drm_mode_set_name(dmode); |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 615 | } |
| 616 | EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); |
Steffen Trumtrar | ebc64e4 | 2012-11-14 11:22:52 +0100 | [diff] [blame] | 617 | |
Steve Longerbeam | d490f45 | 2014-12-18 18:00:22 -0800 | [diff] [blame] | 618 | /** |
| 619 | * drm_display_mode_to_videomode - fill in @vm using @dmode, |
| 620 | * @dmode: drm_display_mode structure to use as source |
| 621 | * @vm: videomode structure to use as destination |
| 622 | * |
| 623 | * Fills out @vm using the display mode specified in @dmode. |
| 624 | */ |
| 625 | void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, |
| 626 | struct videomode *vm) |
| 627 | { |
| 628 | vm->hactive = dmode->hdisplay; |
| 629 | vm->hfront_porch = dmode->hsync_start - dmode->hdisplay; |
| 630 | vm->hsync_len = dmode->hsync_end - dmode->hsync_start; |
| 631 | vm->hback_porch = dmode->htotal - dmode->hsync_end; |
| 632 | |
| 633 | vm->vactive = dmode->vdisplay; |
| 634 | vm->vfront_porch = dmode->vsync_start - dmode->vdisplay; |
| 635 | vm->vsync_len = dmode->vsync_end - dmode->vsync_start; |
| 636 | vm->vback_porch = dmode->vtotal - dmode->vsync_end; |
| 637 | |
| 638 | vm->pixelclock = dmode->clock * 1000; |
| 639 | |
| 640 | vm->flags = 0; |
| 641 | if (dmode->flags & DRM_MODE_FLAG_PHSYNC) |
| 642 | vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH; |
| 643 | else if (dmode->flags & DRM_MODE_FLAG_NHSYNC) |
| 644 | vm->flags |= DISPLAY_FLAGS_HSYNC_LOW; |
| 645 | if (dmode->flags & DRM_MODE_FLAG_PVSYNC) |
| 646 | vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH; |
| 647 | else if (dmode->flags & DRM_MODE_FLAG_NVSYNC) |
| 648 | vm->flags |= DISPLAY_FLAGS_VSYNC_LOW; |
| 649 | if (dmode->flags & DRM_MODE_FLAG_INTERLACE) |
| 650 | vm->flags |= DISPLAY_FLAGS_INTERLACED; |
| 651 | if (dmode->flags & DRM_MODE_FLAG_DBLSCAN) |
| 652 | vm->flags |= DISPLAY_FLAGS_DOUBLESCAN; |
| 653 | if (dmode->flags & DRM_MODE_FLAG_DBLCLK) |
| 654 | vm->flags |= DISPLAY_FLAGS_DOUBLECLK; |
| 655 | } |
| 656 | EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); |
| 657 | |
Lothar Waßmann | cb34d7f | 2016-08-16 15:34:37 +0200 | [diff] [blame] | 658 | /** |
| 659 | * drm_bus_flags_from_videomode - extract information about pixelclk and |
| 660 | * DE polarity from videomode and store it in a separate variable |
| 661 | * @vm: videomode structure to use |
| 662 | * @bus_flags: information about pixelclk and DE polarity will be stored here |
| 663 | * |
| 664 | * Sets DRM_BUS_FLAG_DE_(LOW|HIGH) and DRM_BUS_FLAG_PIXDATA_(POS|NEG)EDGE |
| 665 | * in @bus_flags according to DISPLAY_FLAGS found in @vm |
| 666 | */ |
Lothar Waßmann | d72daa0 | 2016-07-12 15:30:02 +0200 | [diff] [blame] | 667 | void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags) |
| 668 | { |
| 669 | *bus_flags = 0; |
| 670 | if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) |
| 671 | *bus_flags |= DRM_BUS_FLAG_PIXDATA_POSEDGE; |
| 672 | if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) |
| 673 | *bus_flags |= DRM_BUS_FLAG_PIXDATA_NEGEDGE; |
| 674 | |
| 675 | if (vm->flags & DISPLAY_FLAGS_DE_LOW) |
| 676 | *bus_flags |= DRM_BUS_FLAG_DE_LOW; |
| 677 | if (vm->flags & DISPLAY_FLAGS_DE_HIGH) |
| 678 | *bus_flags |= DRM_BUS_FLAG_DE_HIGH; |
| 679 | } |
| 680 | EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode); |
| 681 | |
Tomi Valkeinen | a38884f | 2013-03-12 10:15:43 +0200 | [diff] [blame] | 682 | #ifdef CONFIG_OF |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 683 | /** |
| 684 | * of_get_drm_display_mode - get a drm_display_mode from devicetree |
| 685 | * @np: device_node with the timing specification |
| 686 | * @dmode: will be set to the return value |
Lothar Waßmann | cb34d7f | 2016-08-16 15:34:37 +0200 | [diff] [blame] | 687 | * @bus_flags: information about pixelclk and DE polarity |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 688 | * @index: index into the list of display timings in devicetree |
| 689 | * |
| 690 | * This function is expensive and should only be used, if only one mode is to be |
| 691 | * read from DT. To get multiple modes start with of_get_display_timings and |
| 692 | * work with that instead. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 693 | * |
| 694 | * Returns: |
| 695 | * 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] | 696 | */ |
| 697 | int of_get_drm_display_mode(struct device_node *np, |
Lothar Waßmann | fafc79e | 2016-07-12 15:30:03 +0200 | [diff] [blame] | 698 | struct drm_display_mode *dmode, u32 *bus_flags, |
| 699 | int index) |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 700 | { |
| 701 | struct videomode vm; |
| 702 | int ret; |
| 703 | |
| 704 | ret = of_get_videomode(np, &vm, index); |
| 705 | if (ret) |
| 706 | return ret; |
| 707 | |
| 708 | drm_display_mode_from_videomode(&vm, dmode); |
Lothar Waßmann | fafc79e | 2016-07-12 15:30:03 +0200 | [diff] [blame] | 709 | if (bus_flags) |
| 710 | drm_bus_flags_from_videomode(&vm, bus_flags); |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 711 | |
| 712 | pr_debug("%s: got %dx%d display mode from %s\n", |
| 713 | of_node_full_name(np), vm.hactive, vm.vactive, np->name); |
| 714 | drm_mode_debug_printmodeline(dmode); |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | EXPORT_SYMBOL_GPL(of_get_drm_display_mode); |
Tomi Valkeinen | a38884f | 2013-03-12 10:15:43 +0200 | [diff] [blame] | 719 | #endif /* CONFIG_OF */ |
| 720 | #endif /* CONFIG_VIDEOMODE_HELPERS */ |
Steffen Trumtrar | edb37a9 | 2012-10-28 18:28:06 +0100 | [diff] [blame] | 721 | |
Zhao Yakui | 26bbdad | 2009-06-22 13:17:09 +0800 | [diff] [blame] | 722 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 723 | * drm_mode_set_name - set the name on a mode |
| 724 | * @mode: name will be set in this mode |
| 725 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 726 | * Set the name of @mode to a standard format which is <hdisplay>x<vdisplay> |
| 727 | * with an optional 'i' suffix for interlaced modes. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 728 | */ |
| 729 | void drm_mode_set_name(struct drm_display_mode *mode) |
| 730 | { |
Adam Jackson | 171fdd8 | 2010-03-29 21:43:31 +0000 | [diff] [blame] | 731 | bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); |
| 732 | |
| 733 | snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s", |
| 734 | mode->hdisplay, mode->vdisplay, |
| 735 | interlaced ? "i" : ""); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 736 | } |
| 737 | EXPORT_SYMBOL(drm_mode_set_name); |
| 738 | |
Daniel Vetter | 30ecad7 | 2015-12-09 09:29:36 +0100 | [diff] [blame] | 739 | /** |
| 740 | * drm_mode_hsync - get the hsync of a mode |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 741 | * @mode: mode |
| 742 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 743 | * Returns: |
| 744 | * @modes's hsync rate in kHz, rounded to the nearest integer. Calculates the |
| 745 | * value first if it is not yet set. |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 746 | */ |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 747 | int drm_mode_hsync(const struct drm_display_mode *mode) |
Adam Jackson | 7ac96a9 | 2009-12-03 17:44:37 -0500 | [diff] [blame] | 748 | { |
| 749 | unsigned int calc_val; |
| 750 | |
| 751 | if (mode->hsync) |
| 752 | return mode->hsync; |
| 753 | |
| 754 | if (mode->htotal < 0) |
| 755 | return 0; |
| 756 | |
| 757 | calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */ |
| 758 | calc_val += 500; /* round to 1000Hz */ |
| 759 | calc_val /= 1000; /* truncate to kHz */ |
| 760 | |
| 761 | return calc_val; |
| 762 | } |
| 763 | EXPORT_SYMBOL(drm_mode_hsync); |
| 764 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 765 | /** |
| 766 | * drm_mode_vrefresh - get the vrefresh of a mode |
| 767 | * @mode: mode |
| 768 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 769 | * Returns: |
| 770 | * @modes's vrefresh rate in Hz, rounded to the nearest integer. Calculates the |
| 771 | * value first if it is not yet set. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 772 | */ |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 773 | int drm_mode_vrefresh(const struct drm_display_mode *mode) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 774 | { |
| 775 | int refresh = 0; |
| 776 | unsigned int calc_val; |
| 777 | |
| 778 | if (mode->vrefresh > 0) |
| 779 | refresh = mode->vrefresh; |
| 780 | else if (mode->htotal > 0 && mode->vtotal > 0) { |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 781 | int vtotal; |
| 782 | vtotal = mode->vtotal; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 783 | /* work out vrefresh the value will be x1000 */ |
| 784 | calc_val = (mode->clock * 1000); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 785 | calc_val /= mode->htotal; |
Zhao Yakui | 559ee21 | 2009-09-03 09:33:47 +0800 | [diff] [blame] | 786 | refresh = (calc_val + vtotal / 2) / vtotal; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 787 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 788 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) |
| 789 | refresh *= 2; |
| 790 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
| 791 | refresh /= 2; |
| 792 | if (mode->vscan > 1) |
| 793 | refresh /= mode->vscan; |
| 794 | } |
| 795 | return refresh; |
| 796 | } |
| 797 | EXPORT_SYMBOL(drm_mode_vrefresh); |
| 798 | |
| 799 | /** |
Daniel Vetter | 196cd5d | 2017-01-25 07:26:56 +0100 | [diff] [blame^] | 800 | * drm_mode_get_hv_timing - Fetches hdisplay/vdisplay for given mode |
| 801 | * @mode: mode to query |
| 802 | * @hdisplay: hdisplay value to fill in |
| 803 | * @vdisplay: vdisplay value to fill in |
| 804 | * |
| 805 | * The vdisplay value will be doubled if the specified mode is a stereo mode of |
| 806 | * the appropriate layout. |
| 807 | */ |
| 808 | void drm_mode_get_hv_timing(const struct drm_display_mode *mode, |
| 809 | int *hdisplay, int *vdisplay) |
| 810 | { |
| 811 | struct drm_display_mode adjusted; |
| 812 | |
| 813 | drm_mode_copy(&adjusted, mode); |
| 814 | drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY); |
| 815 | *hdisplay = adjusted.crtc_hdisplay; |
| 816 | *vdisplay = adjusted.crtc_vdisplay; |
| 817 | } |
| 818 | EXPORT_SYMBOL(drm_mode_get_hv_timing); |
| 819 | |
| 820 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 821 | * drm_mode_set_crtcinfo - set CRTC modesetting timing parameters |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 822 | * @p: mode |
Damien Lespiau | 448cce2 | 2013-09-25 16:45:35 +0100 | [diff] [blame] | 823 | * @adjust_flags: a combination of adjustment flags |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 824 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 825 | * Setup the CRTC modesetting timing parameters for @p, adjusting if necessary. |
Damien Lespiau | 448cce2 | 2013-09-25 16:45:35 +0100 | [diff] [blame] | 826 | * |
| 827 | * - The CRTC_INTERLACE_HALVE_V flag can be used to halve vertical timings of |
| 828 | * interlaced modes. |
| 829 | * - The CRTC_STEREO_DOUBLE flag can be used to compute the timings for |
| 830 | * buffers containing two eyes (only adjust the timings when needed, eg. for |
| 831 | * "frame packing" or "side by side full"). |
Gustavo Padovan | ecb7e16 | 2014-12-01 15:40:09 -0800 | [diff] [blame] | 832 | * - The CRTC_NO_DBLSCAN and CRTC_NO_VSCAN flags request that adjustment *not* |
| 833 | * be performed for doublescan and vscan > 1 modes respectively. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 834 | */ |
| 835 | void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) |
| 836 | { |
| 837 | if ((p == NULL) || ((p->type & DRM_MODE_TYPE_CRTC_C) == DRM_MODE_TYPE_BUILTIN)) |
| 838 | return; |
| 839 | |
Damien Lespiau | bde2dcf | 2013-09-25 16:45:34 +0100 | [diff] [blame] | 840 | p->crtc_clock = p->clock; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 841 | p->crtc_hdisplay = p->hdisplay; |
| 842 | p->crtc_hsync_start = p->hsync_start; |
| 843 | p->crtc_hsync_end = p->hsync_end; |
| 844 | p->crtc_htotal = p->htotal; |
| 845 | p->crtc_hskew = p->hskew; |
| 846 | p->crtc_vdisplay = p->vdisplay; |
| 847 | p->crtc_vsync_start = p->vsync_start; |
| 848 | p->crtc_vsync_end = p->vsync_end; |
| 849 | p->crtc_vtotal = p->vtotal; |
| 850 | |
| 851 | if (p->flags & DRM_MODE_FLAG_INTERLACE) { |
| 852 | if (adjust_flags & CRTC_INTERLACE_HALVE_V) { |
| 853 | p->crtc_vdisplay /= 2; |
| 854 | p->crtc_vsync_start /= 2; |
| 855 | p->crtc_vsync_end /= 2; |
| 856 | p->crtc_vtotal /= 2; |
| 857 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 858 | } |
| 859 | |
Gustavo Padovan | ecb7e16 | 2014-12-01 15:40:09 -0800 | [diff] [blame] | 860 | if (!(adjust_flags & CRTC_NO_DBLSCAN)) { |
| 861 | if (p->flags & DRM_MODE_FLAG_DBLSCAN) { |
| 862 | p->crtc_vdisplay *= 2; |
| 863 | p->crtc_vsync_start *= 2; |
| 864 | p->crtc_vsync_end *= 2; |
| 865 | p->crtc_vtotal *= 2; |
| 866 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 867 | } |
| 868 | |
Gustavo Padovan | ecb7e16 | 2014-12-01 15:40:09 -0800 | [diff] [blame] | 869 | if (!(adjust_flags & CRTC_NO_VSCAN)) { |
| 870 | if (p->vscan > 1) { |
| 871 | p->crtc_vdisplay *= p->vscan; |
| 872 | p->crtc_vsync_start *= p->vscan; |
| 873 | p->crtc_vsync_end *= p->vscan; |
| 874 | p->crtc_vtotal *= p->vscan; |
| 875 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 876 | } |
| 877 | |
Damien Lespiau | 448cce2 | 2013-09-25 16:45:35 +0100 | [diff] [blame] | 878 | if (adjust_flags & CRTC_STEREO_DOUBLE) { |
| 879 | unsigned int layout = p->flags & DRM_MODE_FLAG_3D_MASK; |
| 880 | |
| 881 | switch (layout) { |
| 882 | case DRM_MODE_FLAG_3D_FRAME_PACKING: |
| 883 | p->crtc_clock *= 2; |
| 884 | p->crtc_vdisplay += p->crtc_vtotal; |
| 885 | p->crtc_vsync_start += p->crtc_vtotal; |
| 886 | p->crtc_vsync_end += p->crtc_vtotal; |
| 887 | p->crtc_vtotal += p->crtc_vtotal; |
| 888 | break; |
| 889 | } |
| 890 | } |
| 891 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 892 | p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay); |
| 893 | p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal); |
| 894 | p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay); |
| 895 | p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 896 | } |
| 897 | EXPORT_SYMBOL(drm_mode_set_crtcinfo); |
| 898 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 899 | /** |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 900 | * drm_mode_copy - copy the mode |
| 901 | * @dst: mode to overwrite |
| 902 | * @src: mode to copy |
| 903 | * |
Ville Syrjälä | 72e45e9 | 2013-05-31 12:17:06 +0000 | [diff] [blame] | 904 | * Copy an existing mode into another mode, preserving the object id and |
| 905 | * list head of the destination mode. |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 906 | */ |
| 907 | void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) |
| 908 | { |
| 909 | int id = dst->base.id; |
Ville Syrjälä | 72e45e9 | 2013-05-31 12:17:06 +0000 | [diff] [blame] | 910 | struct list_head head = dst->head; |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 911 | |
| 912 | *dst = *src; |
| 913 | dst->base.id = id; |
Ville Syrjälä | 72e45e9 | 2013-05-31 12:17:06 +0000 | [diff] [blame] | 914 | dst->head = head; |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 915 | } |
| 916 | EXPORT_SYMBOL(drm_mode_copy); |
| 917 | |
| 918 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 919 | * drm_mode_duplicate - allocate and duplicate an existing mode |
Daniel Vetter | 3ec0db8 | 2014-01-23 15:06:15 +0100 | [diff] [blame] | 920 | * @dev: drm_device to allocate the duplicated mode for |
| 921 | * @mode: mode to duplicate |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 922 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 923 | * Just allocate a new mode, copy the existing mode into it, and return |
| 924 | * a pointer to it. Used to create new instances of established modes. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 925 | * |
| 926 | * Returns: |
| 927 | * Pointer to duplicated mode on success, NULL on error. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 928 | */ |
| 929 | struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, |
Chris Wilson | b1f559e | 2011-01-26 09:49:47 +0000 | [diff] [blame] | 930 | const struct drm_display_mode *mode) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 931 | { |
| 932 | struct drm_display_mode *nmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 933 | |
| 934 | nmode = drm_mode_create(dev); |
| 935 | if (!nmode) |
| 936 | return NULL; |
| 937 | |
Ville Syrjälä | c3c50e8 | 2012-03-13 12:35:51 +0200 | [diff] [blame] | 938 | drm_mode_copy(nmode, mode); |
| 939 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 940 | return nmode; |
| 941 | } |
| 942 | EXPORT_SYMBOL(drm_mode_duplicate); |
| 943 | |
| 944 | /** |
| 945 | * drm_mode_equal - test modes for equality |
| 946 | * @mode1: first mode |
| 947 | * @mode2: second mode |
| 948 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 949 | * Check to see if @mode1 and @mode2 are equivalent. |
| 950 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 951 | * Returns: |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 952 | * True if the modes are equal, false otherwise. |
| 953 | */ |
Ville Syrjälä | 0b3904a | 2012-10-25 18:05:05 +0000 | [diff] [blame] | 954 | 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] | 955 | { |
Daniel Stone | 5427095 | 2015-03-19 04:33:02 +0000 | [diff] [blame] | 956 | if (!mode1 && !mode2) |
| 957 | return true; |
| 958 | |
| 959 | if (!mode1 || !mode2) |
| 960 | return false; |
| 961 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 962 | /* do clock check convert to PICOS so fb modes get matched |
| 963 | * the same */ |
| 964 | if (mode1->clock && mode2->clock) { |
| 965 | if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock)) |
| 966 | return false; |
| 967 | } else if (mode1->clock != mode2->clock) |
| 968 | return false; |
| 969 | |
Ville Syrjälä | 4c6bcf4 | 2015-11-16 21:05:12 +0200 | [diff] [blame] | 970 | return drm_mode_equal_no_clocks(mode1, mode2); |
| 971 | } |
| 972 | EXPORT_SYMBOL(drm_mode_equal); |
| 973 | |
| 974 | /** |
| 975 | * drm_mode_equal_no_clocks - test modes for equality |
| 976 | * @mode1: first mode |
| 977 | * @mode2: second mode |
| 978 | * |
| 979 | * Check to see if @mode1 and @mode2 are equivalent, but |
| 980 | * don't check the pixel clocks. |
| 981 | * |
| 982 | * Returns: |
| 983 | * True if the modes are equal, false otherwise. |
| 984 | */ |
| 985 | bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
| 986 | { |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 987 | if ((mode1->flags & DRM_MODE_FLAG_3D_MASK) != |
| 988 | (mode2->flags & DRM_MODE_FLAG_3D_MASK)) |
| 989 | return false; |
| 990 | |
| 991 | return drm_mode_equal_no_clocks_no_stereo(mode1, mode2); |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 992 | } |
Ville Syrjälä | 4c6bcf4 | 2015-11-16 21:05:12 +0200 | [diff] [blame] | 993 | EXPORT_SYMBOL(drm_mode_equal_no_clocks); |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 994 | |
| 995 | /** |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 996 | * drm_mode_equal_no_clocks_no_stereo - test modes for equality |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 997 | * @mode1: first mode |
| 998 | * @mode2: second mode |
| 999 | * |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 1000 | * Check to see if @mode1 and @mode2 are equivalent, but |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 1001 | * don't check the pixel clocks nor the stereo layout. |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 1002 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1003 | * Returns: |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 1004 | * True if the modes are equal, false otherwise. |
| 1005 | */ |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 1006 | bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, |
| 1007 | const struct drm_display_mode *mode2) |
Ville Syrjälä | 8cc3f23 | 2013-04-24 19:07:16 +0300 | [diff] [blame] | 1008 | { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1009 | if (mode1->hdisplay == mode2->hdisplay && |
| 1010 | mode1->hsync_start == mode2->hsync_start && |
| 1011 | mode1->hsync_end == mode2->hsync_end && |
| 1012 | mode1->htotal == mode2->htotal && |
| 1013 | mode1->hskew == mode2->hskew && |
| 1014 | mode1->vdisplay == mode2->vdisplay && |
| 1015 | mode1->vsync_start == mode2->vsync_start && |
| 1016 | mode1->vsync_end == mode2->vsync_end && |
| 1017 | mode1->vtotal == mode2->vtotal && |
| 1018 | mode1->vscan == mode2->vscan && |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 1019 | (mode1->flags & ~DRM_MODE_FLAG_3D_MASK) == |
| 1020 | (mode2->flags & ~DRM_MODE_FLAG_3D_MASK)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1021 | return true; |
| 1022 | |
| 1023 | return false; |
| 1024 | } |
Damien Lespiau | f2ecf2e3 | 2013-09-25 16:45:27 +0100 | [diff] [blame] | 1025 | EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1026 | |
| 1027 | /** |
Ville Syrjälä | abc0b14 | 2014-12-17 13:56:23 +0200 | [diff] [blame] | 1028 | * drm_mode_validate_basic - make sure the mode is somewhat sane |
| 1029 | * @mode: mode to check |
| 1030 | * |
| 1031 | * Check that the mode timings are at least somewhat reasonable. |
| 1032 | * Any hardware specific limits are left up for each driver to check. |
| 1033 | * |
| 1034 | * Returns: |
| 1035 | * The mode status |
| 1036 | */ |
| 1037 | enum drm_mode_status |
| 1038 | drm_mode_validate_basic(const struct drm_display_mode *mode) |
| 1039 | { |
| 1040 | if (mode->clock == 0) |
| 1041 | return MODE_CLOCK_LOW; |
| 1042 | |
| 1043 | if (mode->hdisplay == 0 || |
| 1044 | mode->hsync_start < mode->hdisplay || |
| 1045 | mode->hsync_end < mode->hsync_start || |
| 1046 | mode->htotal < mode->hsync_end) |
| 1047 | return MODE_H_ILLEGAL; |
| 1048 | |
| 1049 | if (mode->vdisplay == 0 || |
| 1050 | mode->vsync_start < mode->vdisplay || |
| 1051 | mode->vsync_end < mode->vsync_start || |
| 1052 | mode->vtotal < mode->vsync_end) |
| 1053 | return MODE_V_ILLEGAL; |
| 1054 | |
| 1055 | return MODE_OK; |
| 1056 | } |
| 1057 | EXPORT_SYMBOL(drm_mode_validate_basic); |
| 1058 | |
| 1059 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1060 | * drm_mode_validate_size - make sure modes adhere to size constraints |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1061 | * @mode: mode to check |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1062 | * @maxX: maximum width |
| 1063 | * @maxY: maximum height |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1064 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1065 | * This function is a helper which can be used to validate modes against size |
| 1066 | * 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] | 1067 | * member is updated with the appropriate validation failure code. The list |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1068 | * itself is not changed. |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1069 | * |
| 1070 | * Returns: |
| 1071 | * The mode status |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1072 | */ |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1073 | enum drm_mode_status |
| 1074 | drm_mode_validate_size(const struct drm_display_mode *mode, |
| 1075 | int maxX, int maxY) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1076 | { |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1077 | if (maxX > 0 && mode->hdisplay > maxX) |
| 1078 | return MODE_VIRTUAL_X; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1079 | |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1080 | if (maxY > 0 && mode->vdisplay > maxY) |
| 1081 | return MODE_VIRTUAL_Y; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1082 | |
Ville Syrjälä | 05acaec | 2014-12-17 13:56:22 +0200 | [diff] [blame] | 1083 | return MODE_OK; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1084 | } |
| 1085 | EXPORT_SYMBOL(drm_mode_validate_size); |
| 1086 | |
Ville Syrjälä | e4bf44b | 2015-02-02 19:13:57 +0200 | [diff] [blame] | 1087 | #define MODE_STATUS(status) [MODE_ ## status + 3] = #status |
| 1088 | |
| 1089 | static const char * const drm_mode_status_names[] = { |
| 1090 | MODE_STATUS(OK), |
| 1091 | MODE_STATUS(HSYNC), |
| 1092 | MODE_STATUS(VSYNC), |
| 1093 | MODE_STATUS(H_ILLEGAL), |
| 1094 | MODE_STATUS(V_ILLEGAL), |
| 1095 | MODE_STATUS(BAD_WIDTH), |
| 1096 | MODE_STATUS(NOMODE), |
| 1097 | MODE_STATUS(NO_INTERLACE), |
| 1098 | MODE_STATUS(NO_DBLESCAN), |
| 1099 | MODE_STATUS(NO_VSCAN), |
| 1100 | MODE_STATUS(MEM), |
| 1101 | MODE_STATUS(VIRTUAL_X), |
| 1102 | MODE_STATUS(VIRTUAL_Y), |
| 1103 | MODE_STATUS(MEM_VIRT), |
| 1104 | MODE_STATUS(NOCLOCK), |
| 1105 | MODE_STATUS(CLOCK_HIGH), |
| 1106 | MODE_STATUS(CLOCK_LOW), |
| 1107 | MODE_STATUS(CLOCK_RANGE), |
| 1108 | MODE_STATUS(BAD_HVALUE), |
| 1109 | MODE_STATUS(BAD_VVALUE), |
| 1110 | MODE_STATUS(BAD_VSCAN), |
| 1111 | MODE_STATUS(HSYNC_NARROW), |
| 1112 | MODE_STATUS(HSYNC_WIDE), |
| 1113 | MODE_STATUS(HBLANK_NARROW), |
| 1114 | MODE_STATUS(HBLANK_WIDE), |
| 1115 | MODE_STATUS(VSYNC_NARROW), |
| 1116 | MODE_STATUS(VSYNC_WIDE), |
| 1117 | MODE_STATUS(VBLANK_NARROW), |
| 1118 | MODE_STATUS(VBLANK_WIDE), |
| 1119 | MODE_STATUS(PANEL), |
| 1120 | MODE_STATUS(INTERLACE_WIDTH), |
| 1121 | MODE_STATUS(ONE_WIDTH), |
| 1122 | MODE_STATUS(ONE_HEIGHT), |
| 1123 | MODE_STATUS(ONE_SIZE), |
| 1124 | MODE_STATUS(NO_REDUCED), |
| 1125 | MODE_STATUS(NO_STEREO), |
Ville Syrjälä | 5ba8940 | 2015-12-10 22:39:08 +0200 | [diff] [blame] | 1126 | MODE_STATUS(STALE), |
Ville Syrjälä | e4bf44b | 2015-02-02 19:13:57 +0200 | [diff] [blame] | 1127 | MODE_STATUS(BAD), |
| 1128 | MODE_STATUS(ERROR), |
| 1129 | }; |
| 1130 | |
| 1131 | #undef MODE_STATUS |
| 1132 | |
| 1133 | static const char *drm_get_mode_status_name(enum drm_mode_status status) |
| 1134 | { |
| 1135 | int index = status + 3; |
| 1136 | |
| 1137 | if (WARN_ON(index < 0 || index >= ARRAY_SIZE(drm_mode_status_names))) |
| 1138 | return ""; |
| 1139 | |
| 1140 | return drm_mode_status_names[index]; |
| 1141 | } |
| 1142 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1143 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1144 | * drm_mode_prune_invalid - remove invalid modes from mode list |
| 1145 | * @dev: DRM device |
| 1146 | * @mode_list: list of modes to check |
| 1147 | * @verbose: be verbose about it |
| 1148 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1149 | * This helper function can be used to prune a display mode list after |
| 1150 | * validation has been completed. All modes who's status is not MODE_OK will be |
| 1151 | * removed from the list, and if @verbose the status code and mode name is also |
| 1152 | * printed to dmesg. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1153 | */ |
| 1154 | void drm_mode_prune_invalid(struct drm_device *dev, |
| 1155 | struct list_head *mode_list, bool verbose) |
| 1156 | { |
| 1157 | struct drm_display_mode *mode, *t; |
| 1158 | |
| 1159 | list_for_each_entry_safe(mode, t, mode_list, head) { |
| 1160 | if (mode->status != MODE_OK) { |
| 1161 | list_del(&mode->head); |
| 1162 | if (verbose) { |
| 1163 | drm_mode_debug_printmodeline(mode); |
Ville Syrjälä | e4bf44b | 2015-02-02 19:13:57 +0200 | [diff] [blame] | 1164 | DRM_DEBUG_KMS("Not using %s mode: %s\n", |
| 1165 | mode->name, |
| 1166 | drm_get_mode_status_name(mode->status)); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1167 | } |
| 1168 | drm_mode_destroy(dev, mode); |
| 1169 | } |
| 1170 | } |
| 1171 | } |
| 1172 | EXPORT_SYMBOL(drm_mode_prune_invalid); |
| 1173 | |
| 1174 | /** |
| 1175 | * drm_mode_compare - compare modes for favorability |
Dave Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 1176 | * @priv: unused |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1177 | * @lh_a: list_head for first mode |
| 1178 | * @lh_b: list_head for second mode |
| 1179 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1180 | * Compare two modes, given by @lh_a and @lh_b, returning a value indicating |
| 1181 | * which is better. |
| 1182 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1183 | * Returns: |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1184 | * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or |
| 1185 | * positive if @lh_b is better than @lh_a. |
| 1186 | */ |
Dave Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 1187 | 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] | 1188 | { |
| 1189 | struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head); |
| 1190 | struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head); |
| 1191 | int diff; |
| 1192 | |
| 1193 | diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) - |
| 1194 | ((a->type & DRM_MODE_TYPE_PREFERRED) != 0); |
| 1195 | if (diff) |
| 1196 | return diff; |
| 1197 | diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay; |
| 1198 | if (diff) |
| 1199 | return diff; |
Ville Syrjälä | 9bc3cd5 | 2013-05-31 12:17:08 +0000 | [diff] [blame] | 1200 | |
| 1201 | diff = b->vrefresh - a->vrefresh; |
| 1202 | if (diff) |
| 1203 | return diff; |
| 1204 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1205 | diff = b->clock - a->clock; |
| 1206 | return diff; |
| 1207 | } |
| 1208 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1209 | /** |
| 1210 | * drm_mode_sort - sort mode list |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1211 | * @mode_list: list of drm_display_mode structures to sort |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1212 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1213 | * 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] | 1214 | */ |
| 1215 | void drm_mode_sort(struct list_head *mode_list) |
| 1216 | { |
Dave Chinner | 2c76127 | 2010-01-12 17:39:16 +1100 | [diff] [blame] | 1217 | list_sort(NULL, mode_list, drm_mode_compare); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1218 | } |
| 1219 | EXPORT_SYMBOL(drm_mode_sort); |
| 1220 | |
| 1221 | /** |
| 1222 | * drm_mode_connector_list_update - update the mode list for the connector |
| 1223 | * @connector: the connector to update |
| 1224 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1225 | * This moves the modes from the @connector probed_modes list |
| 1226 | * 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] | 1227 | * list and only adds different/new modes. |
| 1228 | * |
| 1229 | * This is just a helper functions doesn't validate any modes itself and also |
| 1230 | * doesn't prune any invalid modes. Callers need to do that themselves. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1231 | */ |
Ville Syrjälä | 6af3e65 | 2015-12-03 23:14:14 +0200 | [diff] [blame] | 1232 | void drm_mode_connector_list_update(struct drm_connector *connector) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1233 | { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1234 | struct drm_display_mode *pmode, *pt; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1235 | |
Daniel Vetter | 6395138 | 2014-01-23 15:14:15 +0100 | [diff] [blame] | 1236 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
| 1237 | |
Ville Syrjälä | 2f8c19e | 2015-12-03 23:14:12 +0200 | [diff] [blame] | 1238 | list_for_each_entry_safe(pmode, pt, &connector->probed_modes, head) { |
| 1239 | struct drm_display_mode *mode; |
| 1240 | bool found_it = false; |
| 1241 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1242 | /* go through current modes checking for the new probed mode */ |
| 1243 | list_for_each_entry(mode, &connector->modes, head) { |
Ville Syrjälä | 2f8c19e | 2015-12-03 23:14:12 +0200 | [diff] [blame] | 1244 | if (!drm_mode_equal(pmode, mode)) |
| 1245 | continue; |
| 1246 | |
| 1247 | found_it = true; |
Ville Syrjälä | fc245f8 | 2015-12-04 15:13:01 +0200 | [diff] [blame] | 1248 | |
| 1249 | /* |
| 1250 | * If the old matching mode is stale (ie. left over |
| 1251 | * from a previous probe) just replace it outright. |
| 1252 | * Otherwise just merge the type bits between all |
| 1253 | * equal probed modes. |
| 1254 | * |
| 1255 | * If two probed modes are considered equal, pick the |
| 1256 | * actual timings from the one that's marked as |
| 1257 | * preferred (in case the match isn't 100%). If |
| 1258 | * multiple or zero preferred modes are present, favor |
| 1259 | * the mode added to the probed_modes list first. |
| 1260 | */ |
| 1261 | if (mode->status == MODE_STALE) { |
| 1262 | drm_mode_copy(mode, pmode); |
| 1263 | } else if ((mode->type & DRM_MODE_TYPE_PREFERRED) == 0 && |
| 1264 | (pmode->type & DRM_MODE_TYPE_PREFERRED) != 0) { |
Ville Syrjälä | 6af3e65 | 2015-12-03 23:14:14 +0200 | [diff] [blame] | 1265 | pmode->type |= mode->type; |
Ville Syrjälä | fc245f8 | 2015-12-04 15:13:01 +0200 | [diff] [blame] | 1266 | drm_mode_copy(mode, pmode); |
| 1267 | } else { |
Ville Syrjälä | 6af3e65 | 2015-12-03 23:14:14 +0200 | [diff] [blame] | 1268 | mode->type |= pmode->type; |
Ville Syrjälä | fc245f8 | 2015-12-04 15:13:01 +0200 | [diff] [blame] | 1269 | } |
| 1270 | |
Ville Syrjälä | 2f8c19e | 2015-12-03 23:14:12 +0200 | [diff] [blame] | 1271 | list_del(&pmode->head); |
| 1272 | drm_mode_destroy(connector->dev, pmode); |
| 1273 | break; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1274 | } |
| 1275 | |
| 1276 | if (!found_it) { |
| 1277 | list_move_tail(&pmode->head, &connector->modes); |
| 1278 | } |
| 1279 | } |
| 1280 | } |
| 1281 | EXPORT_SYMBOL(drm_mode_connector_list_update); |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1282 | |
| 1283 | /** |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1284 | * drm_mode_parse_command_line_for_connector - parse command line modeline for connector |
| 1285 | * @mode_option: optional per connector mode option |
| 1286 | * @connector: connector to parse modeline for |
| 1287 | * @mode: preallocated drm_cmdline_mode structure to fill out |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1288 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1289 | * This parses @mode_option command line modeline for modes and options to |
| 1290 | * configure the connector. If @mode_option is NULL the default command line |
| 1291 | * modeline in fb_mode_option will be parsed instead. |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1292 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1293 | * This uses the same parameters as the fb modedb.c, except for an extra |
| 1294 | * force-enable, force-enable-digital and force-disable bit at the end: |
| 1295 | * |
Danilo Cesar Lemes de Paula | f03d8ed | 2015-11-25 18:07:55 +0100 | [diff] [blame] | 1296 | * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1297 | * |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1298 | * The intermediate drm_cmdline_mode structure is required to store additional |
Yannick Guerrini | 2a97acd | 2015-03-04 09:30:09 +0100 | [diff] [blame] | 1299 | * options from the command line modline like the force-enable/disable flag. |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1300 | * |
| 1301 | * Returns: |
| 1302 | * True if a valid modeline has been parsed, false otherwise. |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1303 | */ |
| 1304 | bool drm_mode_parse_command_line_for_connector(const char *mode_option, |
| 1305 | struct drm_connector *connector, |
| 1306 | struct drm_cmdline_mode *mode) |
| 1307 | { |
| 1308 | const char *name; |
| 1309 | unsigned int namelen; |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1310 | bool res_specified = false, bpp_specified = false, refresh_specified = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1311 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1312 | bool yres_specified = false, cvt = false, rb = false; |
| 1313 | bool interlace = false, margins = false, was_digit = false; |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1314 | int i; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1315 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; |
| 1316 | |
Dave Airlie | cb3c438 | 2011-05-04 13:08:58 +1000 | [diff] [blame] | 1317 | #ifdef CONFIG_FB |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1318 | if (!mode_option) |
| 1319 | mode_option = fb_mode_option; |
Dave Airlie | cb3c438 | 2011-05-04 13:08:58 +1000 | [diff] [blame] | 1320 | #endif |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1321 | |
| 1322 | if (!mode_option) { |
| 1323 | mode->specified = false; |
| 1324 | return false; |
| 1325 | } |
| 1326 | |
| 1327 | name = mode_option; |
| 1328 | namelen = strlen(name); |
| 1329 | for (i = namelen-1; i >= 0; i--) { |
| 1330 | switch (name[i]) { |
| 1331 | case '@': |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1332 | if (!refresh_specified && !bpp_specified && |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1333 | !yres_specified && !cvt && !rb && was_digit) { |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1334 | refresh = simple_strtol(&name[i+1], NULL, 10); |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1335 | refresh_specified = true; |
| 1336 | was_digit = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1337 | } else |
| 1338 | goto done; |
| 1339 | break; |
| 1340 | case '-': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1341 | if (!bpp_specified && !yres_specified && !cvt && |
| 1342 | !rb && was_digit) { |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1343 | bpp = simple_strtol(&name[i+1], NULL, 10); |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1344 | bpp_specified = true; |
| 1345 | was_digit = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1346 | } else |
| 1347 | goto done; |
| 1348 | break; |
| 1349 | case 'x': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1350 | if (!yres_specified && was_digit) { |
LABBE Corentin | d6e6e14 | 2015-12-11 13:58:59 +0100 | [diff] [blame] | 1351 | yres = simple_strtol(&name[i+1], NULL, 10); |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1352 | yres_specified = true; |
| 1353 | was_digit = false; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1354 | } else |
| 1355 | goto done; |
Damien Lespiau | 97fbfbf | 2013-05-08 17:03:30 +0100 | [diff] [blame] | 1356 | break; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1357 | case '0' ... '9': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1358 | was_digit = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1359 | break; |
| 1360 | case 'M': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1361 | if (yres_specified || cvt || was_digit) |
| 1362 | goto done; |
| 1363 | cvt = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1364 | break; |
| 1365 | case 'R': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1366 | if (yres_specified || cvt || rb || was_digit) |
| 1367 | goto done; |
| 1368 | rb = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1369 | break; |
| 1370 | case 'm': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1371 | if (cvt || yres_specified || was_digit) |
| 1372 | goto done; |
| 1373 | margins = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1374 | break; |
| 1375 | case 'i': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1376 | if (cvt || yres_specified || was_digit) |
| 1377 | goto done; |
| 1378 | interlace = true; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1379 | break; |
| 1380 | case 'e': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1381 | if (yres_specified || bpp_specified || refresh_specified || |
| 1382 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
| 1383 | goto done; |
| 1384 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1385 | force = DRM_FORCE_ON; |
| 1386 | break; |
| 1387 | case 'D': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1388 | if (yres_specified || bpp_specified || refresh_specified || |
| 1389 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
| 1390 | goto done; |
| 1391 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1392 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
| 1393 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
| 1394 | force = DRM_FORCE_ON; |
| 1395 | else |
| 1396 | force = DRM_FORCE_ON_DIGITAL; |
| 1397 | break; |
| 1398 | case 'd': |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1399 | if (yres_specified || bpp_specified || refresh_specified || |
| 1400 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
| 1401 | goto done; |
| 1402 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1403 | force = DRM_FORCE_OFF; |
| 1404 | break; |
| 1405 | default: |
| 1406 | goto done; |
| 1407 | } |
| 1408 | } |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1409 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1410 | if (i < 0 && yres_specified) { |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1411 | char *ch; |
| 1412 | xres = simple_strtol(name, &ch, 10); |
| 1413 | if ((ch != NULL) && (*ch == 'x')) |
| 1414 | res_specified = true; |
| 1415 | else |
| 1416 | i = ch - name; |
| 1417 | } else if (!yres_specified && was_digit) { |
| 1418 | /* catch mode that begins with digits but has no 'x' */ |
| 1419 | i = 0; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1420 | } |
| 1421 | done: |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1422 | if (i >= 0) { |
LABBE Corentin | 67fe85d | 2016-02-04 15:03:52 +0100 | [diff] [blame] | 1423 | 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] | 1424 | i, name); |
| 1425 | mode->specified = false; |
| 1426 | return false; |
| 1427 | } |
| 1428 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1429 | if (res_specified) { |
| 1430 | mode->specified = true; |
| 1431 | mode->xres = xres; |
| 1432 | mode->yres = yres; |
| 1433 | } |
| 1434 | |
| 1435 | if (refresh_specified) { |
| 1436 | mode->refresh_specified = true; |
| 1437 | mode->refresh = refresh; |
| 1438 | } |
| 1439 | |
| 1440 | if (bpp_specified) { |
| 1441 | mode->bpp_specified = true; |
| 1442 | mode->bpp = bpp; |
| 1443 | } |
Rolf Eike Beer | 04fee89 | 2011-06-15 11:27:02 +0200 | [diff] [blame] | 1444 | mode->rb = rb; |
| 1445 | mode->cvt = cvt; |
| 1446 | mode->interlace = interlace; |
| 1447 | mode->margins = margins; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1448 | mode->force = force; |
| 1449 | |
| 1450 | return true; |
| 1451 | } |
| 1452 | EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); |
| 1453 | |
Daniel Vetter | f5aabb9 | 2014-01-23 20:05:00 +0100 | [diff] [blame] | 1454 | /** |
| 1455 | * drm_mode_create_from_cmdline_mode - convert a command line modeline into a DRM display mode |
| 1456 | * @dev: DRM device to create the new mode for |
| 1457 | * @cmd: input command line modeline |
| 1458 | * |
| 1459 | * Returns: |
| 1460 | * Pointer to converted mode on success, NULL on error. |
| 1461 | */ |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1462 | struct drm_display_mode * |
| 1463 | drm_mode_create_from_cmdline_mode(struct drm_device *dev, |
| 1464 | struct drm_cmdline_mode *cmd) |
| 1465 | { |
| 1466 | struct drm_display_mode *mode; |
| 1467 | |
| 1468 | if (cmd->cvt) |
| 1469 | mode = drm_cvt_mode(dev, |
| 1470 | cmd->xres, cmd->yres, |
| 1471 | cmd->refresh_specified ? cmd->refresh : 60, |
| 1472 | cmd->rb, cmd->interlace, |
| 1473 | cmd->margins); |
| 1474 | else |
| 1475 | mode = drm_gtf_mode(dev, |
| 1476 | cmd->xres, cmd->yres, |
| 1477 | cmd->refresh_specified ? cmd->refresh : 60, |
| 1478 | cmd->interlace, |
| 1479 | cmd->margins); |
| 1480 | if (!mode) |
| 1481 | return NULL; |
| 1482 | |
Chris Wilson | eaf99c7 | 2014-08-06 10:08:32 +0200 | [diff] [blame] | 1483 | mode->type |= DRM_MODE_TYPE_USERDEF; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1484 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
| 1485 | return mode; |
| 1486 | } |
| 1487 | EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); |
Daniel Stone | 934a8a8 | 2015-05-22 13:34:48 +0100 | [diff] [blame] | 1488 | |
| 1489 | /** |
| 1490 | * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo |
| 1491 | * @out: drm_mode_modeinfo struct to return to the user |
| 1492 | * @in: drm_display_mode to use |
| 1493 | * |
| 1494 | * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to |
| 1495 | * the user. |
| 1496 | */ |
| 1497 | void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, |
| 1498 | const struct drm_display_mode *in) |
| 1499 | { |
| 1500 | WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || |
| 1501 | in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || |
| 1502 | in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || |
| 1503 | in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || |
| 1504 | in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, |
| 1505 | "timing values too large for mode info\n"); |
| 1506 | |
| 1507 | out->clock = in->clock; |
| 1508 | out->hdisplay = in->hdisplay; |
| 1509 | out->hsync_start = in->hsync_start; |
| 1510 | out->hsync_end = in->hsync_end; |
| 1511 | out->htotal = in->htotal; |
| 1512 | out->hskew = in->hskew; |
| 1513 | out->vdisplay = in->vdisplay; |
| 1514 | out->vsync_start = in->vsync_start; |
| 1515 | out->vsync_end = in->vsync_end; |
| 1516 | out->vtotal = in->vtotal; |
| 1517 | out->vscan = in->vscan; |
| 1518 | out->vrefresh = in->vrefresh; |
| 1519 | out->flags = in->flags; |
| 1520 | out->type = in->type; |
| 1521 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
| 1522 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
| 1523 | } |
| 1524 | |
| 1525 | /** |
| 1526 | * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode |
| 1527 | * @out: drm_display_mode to return to the user |
| 1528 | * @in: drm_mode_modeinfo to use |
| 1529 | * |
| 1530 | * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to |
| 1531 | * the caller. |
| 1532 | * |
| 1533 | * Returns: |
| 1534 | * Zero on success, negative errno on failure. |
| 1535 | */ |
| 1536 | int drm_mode_convert_umode(struct drm_display_mode *out, |
| 1537 | const struct drm_mode_modeinfo *in) |
| 1538 | { |
| 1539 | int ret = -EINVAL; |
| 1540 | |
| 1541 | if (in->clock > INT_MAX || in->vrefresh > INT_MAX) { |
| 1542 | ret = -ERANGE; |
| 1543 | goto out; |
| 1544 | } |
| 1545 | |
| 1546 | if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) |
| 1547 | goto out; |
| 1548 | |
| 1549 | out->clock = in->clock; |
| 1550 | out->hdisplay = in->hdisplay; |
| 1551 | out->hsync_start = in->hsync_start; |
| 1552 | out->hsync_end = in->hsync_end; |
| 1553 | out->htotal = in->htotal; |
| 1554 | out->hskew = in->hskew; |
| 1555 | out->vdisplay = in->vdisplay; |
| 1556 | out->vsync_start = in->vsync_start; |
| 1557 | out->vsync_end = in->vsync_end; |
| 1558 | out->vtotal = in->vtotal; |
| 1559 | out->vscan = in->vscan; |
| 1560 | out->vrefresh = in->vrefresh; |
| 1561 | out->flags = in->flags; |
| 1562 | out->type = in->type; |
| 1563 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
| 1564 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
| 1565 | |
| 1566 | out->status = drm_mode_validate_basic(out); |
| 1567 | if (out->status != MODE_OK) |
| 1568 | goto out; |
| 1569 | |
Tomi Valkeinen | b201e74 | 2016-05-31 15:03:15 +0300 | [diff] [blame] | 1570 | drm_mode_set_crtcinfo(out, CRTC_INTERLACE_HALVE_V); |
| 1571 | |
Daniel Stone | 934a8a8 | 2015-05-22 13:34:48 +0100 | [diff] [blame] | 1572 | ret = 0; |
| 1573 | |
| 1574 | out: |
| 1575 | return ret; |
Danilo Cesar Lemes de Paula | f03d8ed | 2015-11-25 18:07:55 +0100 | [diff] [blame] | 1576 | } |