1f453ba04SDave Airlie /* 2f453ba04SDave Airlie * Copyright © 1997-2003 by The XFree86 Project, Inc. 3f453ba04SDave Airlie * Copyright © 2007 Dave Airlie 4f453ba04SDave Airlie * Copyright © 2007-2008 Intel Corporation 5f453ba04SDave Airlie * Jesse Barnes <jesse.barnes@intel.com> 6d782c3f9SZhao Yakui * Copyright 2005-2006 Luc Verhaegen 726bbdadaSZhao Yakui * Copyright (c) 2001, Andy Ritger aritger@nvidia.com 8f453ba04SDave Airlie * 9f453ba04SDave Airlie * Permission is hereby granted, free of charge, to any person obtaining a 10f453ba04SDave Airlie * copy of this software and associated documentation files (the "Software"), 11f453ba04SDave Airlie * to deal in the Software without restriction, including without limitation 12f453ba04SDave Airlie * the rights to use, copy, modify, merge, publish, distribute, sublicense, 13f453ba04SDave Airlie * and/or sell copies of the Software, and to permit persons to whom the 14f453ba04SDave Airlie * Software is furnished to do so, subject to the following conditions: 15f453ba04SDave Airlie * 16f453ba04SDave Airlie * The above copyright notice and this permission notice shall be included in 17f453ba04SDave Airlie * all copies or substantial portions of the Software. 18f453ba04SDave Airlie * 19f453ba04SDave Airlie * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20f453ba04SDave Airlie * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21f453ba04SDave Airlie * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22f453ba04SDave Airlie * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 23f453ba04SDave Airlie * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 24f453ba04SDave Airlie * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 25f453ba04SDave Airlie * OTHER DEALINGS IN THE SOFTWARE. 26f453ba04SDave Airlie * 27f453ba04SDave Airlie * Except as contained in this notice, the name of the copyright holder(s) 28f453ba04SDave Airlie * and author(s) shall not be used in advertising or otherwise to promote 29f453ba04SDave Airlie * the sale, use or other dealings in this Software without prior written 30f453ba04SDave Airlie * authorization from the copyright holder(s) and author(s). 31f453ba04SDave Airlie */ 32f453ba04SDave Airlie 33e08ab74bSMaxime Ripard #include <linux/ctype.h> 34fb28b3f0SThomas Zimmermann #include <linux/export.h> 35fb28b3f0SThomas Zimmermann #include <linux/fb.h> /* for KHZ2PICOS() */ 36f453ba04SDave Airlie #include <linux/list.h> 372c761270SDave Chinner #include <linux/list_sort.h> 38fb28b3f0SThomas Zimmermann #include <linux/of.h> 390500c04eSSam Ravnborg 4095ae342dSNoralf Trønnes #include <video/of_display_timing.h> 41edb37a95SSteffen Trumtrar #include <video/of_videomode.h> 42ebc64e45SSteffen Trumtrar #include <video/videomode.h> 430500c04eSSam Ravnborg 440500c04eSSam Ravnborg #include <drm/drm_crtc.h> 450500c04eSSam Ravnborg #include <drm/drm_device.h> 46255490f9SVille Syrjälä #include <drm/drm_edid.h> 4755310008SDaniel Vetter #include <drm/drm_modes.h> 480500c04eSSam Ravnborg #include <drm/drm_print.h> 49f453ba04SDave Airlie 508bd441b2SDaniel Vetter #include "drm_crtc_internal.h" 518bd441b2SDaniel Vetter 52f453ba04SDave Airlie /** 533ec0db81SDaniel Vetter * drm_mode_debug_printmodeline - print a mode to dmesg 54f453ba04SDave Airlie * @mode: mode to print 55f453ba04SDave Airlie * 56f453ba04SDave Airlie * Describe @mode using DRM_DEBUG. 57f453ba04SDave Airlie */ 580b3904abSVille Syrjälä void drm_mode_debug_printmodeline(const struct drm_display_mode *mode) 59f453ba04SDave Airlie { 6065c7dc18SRob Clark DRM_DEBUG_KMS("Modeline " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode)); 61f453ba04SDave Airlie } 62f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_debug_printmodeline); 63f453ba04SDave Airlie 64f453ba04SDave Airlie /** 658bd441b2SDaniel Vetter * drm_mode_create - create a new display mode 668bd441b2SDaniel Vetter * @dev: DRM device 678bd441b2SDaniel Vetter * 68f5aabb97SDaniel Vetter * Create a new, cleared drm_display_mode with kzalloc, allocate an ID for it 69f5aabb97SDaniel Vetter * and return it. 708bd441b2SDaniel Vetter * 71f5aabb97SDaniel Vetter * Returns: 728bd441b2SDaniel Vetter * Pointer to new mode on success, NULL on error. 738bd441b2SDaniel Vetter */ 748bd441b2SDaniel Vetter struct drm_display_mode *drm_mode_create(struct drm_device *dev) 758bd441b2SDaniel Vetter { 768bd441b2SDaniel Vetter struct drm_display_mode *nmode; 778bd441b2SDaniel Vetter 788bd441b2SDaniel Vetter nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); 798bd441b2SDaniel Vetter if (!nmode) 808bd441b2SDaniel Vetter return NULL; 818bd441b2SDaniel Vetter 828bd441b2SDaniel Vetter return nmode; 838bd441b2SDaniel Vetter } 848bd441b2SDaniel Vetter EXPORT_SYMBOL(drm_mode_create); 858bd441b2SDaniel Vetter 868bd441b2SDaniel Vetter /** 878bd441b2SDaniel Vetter * drm_mode_destroy - remove a mode 888bd441b2SDaniel Vetter * @dev: DRM device 898bd441b2SDaniel Vetter * @mode: mode to remove 908bd441b2SDaniel Vetter * 91f5aabb97SDaniel Vetter * Release @mode's unique ID, then free it @mode structure itself using kfree. 928bd441b2SDaniel Vetter */ 938bd441b2SDaniel Vetter void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) 948bd441b2SDaniel Vetter { 958bd441b2SDaniel Vetter if (!mode) 968bd441b2SDaniel Vetter return; 978bd441b2SDaniel Vetter 988bd441b2SDaniel Vetter kfree(mode); 998bd441b2SDaniel Vetter } 1008bd441b2SDaniel Vetter EXPORT_SYMBOL(drm_mode_destroy); 1018bd441b2SDaniel Vetter 1028bd441b2SDaniel Vetter /** 103f5aabb97SDaniel Vetter * drm_mode_probed_add - add a mode to a connector's probed_mode list 1048bd441b2SDaniel Vetter * @connector: connector the new mode 1058bd441b2SDaniel Vetter * @mode: mode data 1068bd441b2SDaniel Vetter * 107f5aabb97SDaniel Vetter * Add @mode to @connector's probed_mode list for later use. This list should 108f5aabb97SDaniel Vetter * then in a second step get filtered and all the modes actually supported by 109f5aabb97SDaniel Vetter * the hardware moved to the @connector's modes list. 1108bd441b2SDaniel Vetter */ 1118bd441b2SDaniel Vetter void drm_mode_probed_add(struct drm_connector *connector, 1128bd441b2SDaniel Vetter struct drm_display_mode *mode) 1138bd441b2SDaniel Vetter { 1148bd441b2SDaniel Vetter WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); 1158bd441b2SDaniel Vetter 1168bd441b2SDaniel Vetter list_add_tail(&mode->head, &connector->probed_modes); 1178bd441b2SDaniel Vetter } 1188bd441b2SDaniel Vetter EXPORT_SYMBOL(drm_mode_probed_add); 1198bd441b2SDaniel Vetter 1204fcd2385SMaxime Ripard enum drm_mode_analog { 1214fcd2385SMaxime Ripard DRM_MODE_ANALOG_NTSC, /* 525 lines, 60Hz */ 1224fcd2385SMaxime Ripard DRM_MODE_ANALOG_PAL, /* 625 lines, 50Hz */ 1234fcd2385SMaxime Ripard }; 1244fcd2385SMaxime Ripard 1254fcd2385SMaxime Ripard /* 1264fcd2385SMaxime Ripard * The timings come from: 1274fcd2385SMaxime Ripard * - https://web.archive.org/web/20220406232708/http://www.kolumbus.fi/pami1/video/pal_ntsc.html 1284fcd2385SMaxime Ripard * - https://web.archive.org/web/20220406124914/http://martin.hinner.info/vga/pal.html 1294fcd2385SMaxime Ripard * - https://web.archive.org/web/20220609202433/http://www.batsocks.co.uk/readme/video_timing.htm 1304fcd2385SMaxime Ripard */ 1314fcd2385SMaxime Ripard #define NTSC_LINE_DURATION_NS 63556U 1324fcd2385SMaxime Ripard #define NTSC_LINES_NUMBER 525 1334fcd2385SMaxime Ripard 1344fcd2385SMaxime Ripard #define NTSC_HBLK_DURATION_TYP_NS 10900U 1354fcd2385SMaxime Ripard #define NTSC_HBLK_DURATION_MIN_NS (NTSC_HBLK_DURATION_TYP_NS - 200) 1364fcd2385SMaxime Ripard #define NTSC_HBLK_DURATION_MAX_NS (NTSC_HBLK_DURATION_TYP_NS + 200) 1374fcd2385SMaxime Ripard 1384fcd2385SMaxime Ripard #define NTSC_HACT_DURATION_TYP_NS (NTSC_LINE_DURATION_NS - NTSC_HBLK_DURATION_TYP_NS) 1394fcd2385SMaxime Ripard #define NTSC_HACT_DURATION_MIN_NS (NTSC_LINE_DURATION_NS - NTSC_HBLK_DURATION_MAX_NS) 1404fcd2385SMaxime Ripard #define NTSC_HACT_DURATION_MAX_NS (NTSC_LINE_DURATION_NS - NTSC_HBLK_DURATION_MIN_NS) 1414fcd2385SMaxime Ripard 1424fcd2385SMaxime Ripard #define NTSC_HFP_DURATION_TYP_NS 1500 1434fcd2385SMaxime Ripard #define NTSC_HFP_DURATION_MIN_NS 1270 1444fcd2385SMaxime Ripard #define NTSC_HFP_DURATION_MAX_NS 2220 1454fcd2385SMaxime Ripard 1464fcd2385SMaxime Ripard #define NTSC_HSLEN_DURATION_TYP_NS 4700 1474fcd2385SMaxime Ripard #define NTSC_HSLEN_DURATION_MIN_NS (NTSC_HSLEN_DURATION_TYP_NS - 100) 1484fcd2385SMaxime Ripard #define NTSC_HSLEN_DURATION_MAX_NS (NTSC_HSLEN_DURATION_TYP_NS + 100) 1494fcd2385SMaxime Ripard 1504fcd2385SMaxime Ripard #define NTSC_HBP_DURATION_TYP_NS 4700 1514fcd2385SMaxime Ripard 1524fcd2385SMaxime Ripard /* 1534fcd2385SMaxime Ripard * I couldn't find the actual tolerance for the back porch, so let's 1544fcd2385SMaxime Ripard * just reuse the sync length ones. 1554fcd2385SMaxime Ripard */ 1564fcd2385SMaxime Ripard #define NTSC_HBP_DURATION_MIN_NS (NTSC_HBP_DURATION_TYP_NS - 100) 1574fcd2385SMaxime Ripard #define NTSC_HBP_DURATION_MAX_NS (NTSC_HBP_DURATION_TYP_NS + 100) 1584fcd2385SMaxime Ripard 1594fcd2385SMaxime Ripard #define PAL_LINE_DURATION_NS 64000U 1604fcd2385SMaxime Ripard #define PAL_LINES_NUMBER 625 1614fcd2385SMaxime Ripard 1624fcd2385SMaxime Ripard #define PAL_HACT_DURATION_TYP_NS 51950U 1634fcd2385SMaxime Ripard #define PAL_HACT_DURATION_MIN_NS (PAL_HACT_DURATION_TYP_NS - 100) 1644fcd2385SMaxime Ripard #define PAL_HACT_DURATION_MAX_NS (PAL_HACT_DURATION_TYP_NS + 400) 1654fcd2385SMaxime Ripard 1664fcd2385SMaxime Ripard #define PAL_HBLK_DURATION_TYP_NS (PAL_LINE_DURATION_NS - PAL_HACT_DURATION_TYP_NS) 1674fcd2385SMaxime Ripard #define PAL_HBLK_DURATION_MIN_NS (PAL_LINE_DURATION_NS - PAL_HACT_DURATION_MAX_NS) 1684fcd2385SMaxime Ripard #define PAL_HBLK_DURATION_MAX_NS (PAL_LINE_DURATION_NS - PAL_HACT_DURATION_MIN_NS) 1694fcd2385SMaxime Ripard 1704fcd2385SMaxime Ripard #define PAL_HFP_DURATION_TYP_NS 1650 1714fcd2385SMaxime Ripard #define PAL_HFP_DURATION_MIN_NS (PAL_HFP_DURATION_TYP_NS - 100) 1724fcd2385SMaxime Ripard #define PAL_HFP_DURATION_MAX_NS (PAL_HFP_DURATION_TYP_NS + 400) 1734fcd2385SMaxime Ripard 1744fcd2385SMaxime Ripard #define PAL_HSLEN_DURATION_TYP_NS 4700 1754fcd2385SMaxime Ripard #define PAL_HSLEN_DURATION_MIN_NS (PAL_HSLEN_DURATION_TYP_NS - 200) 1764fcd2385SMaxime Ripard #define PAL_HSLEN_DURATION_MAX_NS (PAL_HSLEN_DURATION_TYP_NS + 200) 1774fcd2385SMaxime Ripard 1784fcd2385SMaxime Ripard #define PAL_HBP_DURATION_TYP_NS 5700 1794fcd2385SMaxime Ripard #define PAL_HBP_DURATION_MIN_NS (PAL_HBP_DURATION_TYP_NS - 200) 1804fcd2385SMaxime Ripard #define PAL_HBP_DURATION_MAX_NS (PAL_HBP_DURATION_TYP_NS + 200) 1814fcd2385SMaxime Ripard 1824fcd2385SMaxime Ripard struct analog_param_field { 1834fcd2385SMaxime Ripard unsigned int even, odd; 1844fcd2385SMaxime Ripard }; 1854fcd2385SMaxime Ripard 1864fcd2385SMaxime Ripard #define PARAM_FIELD(_odd, _even) \ 1874fcd2385SMaxime Ripard { .even = _even, .odd = _odd } 1884fcd2385SMaxime Ripard 1894fcd2385SMaxime Ripard struct analog_param_range { 1904fcd2385SMaxime Ripard unsigned int min, typ, max; 1914fcd2385SMaxime Ripard }; 1924fcd2385SMaxime Ripard 1934fcd2385SMaxime Ripard #define PARAM_RANGE(_min, _typ, _max) \ 1944fcd2385SMaxime Ripard { .min = _min, .typ = _typ, .max = _max } 1954fcd2385SMaxime Ripard 1964fcd2385SMaxime Ripard struct analog_parameters { 1974fcd2385SMaxime Ripard unsigned int num_lines; 1984fcd2385SMaxime Ripard unsigned int line_duration_ns; 1994fcd2385SMaxime Ripard 2004fcd2385SMaxime Ripard struct analog_param_range hact_ns; 2014fcd2385SMaxime Ripard struct analog_param_range hfp_ns; 2024fcd2385SMaxime Ripard struct analog_param_range hslen_ns; 2034fcd2385SMaxime Ripard struct analog_param_range hbp_ns; 2044fcd2385SMaxime Ripard struct analog_param_range hblk_ns; 2054fcd2385SMaxime Ripard 2064fcd2385SMaxime Ripard unsigned int bt601_hfp; 2074fcd2385SMaxime Ripard 2084fcd2385SMaxime Ripard struct analog_param_field vfp_lines; 2094fcd2385SMaxime Ripard struct analog_param_field vslen_lines; 2104fcd2385SMaxime Ripard struct analog_param_field vbp_lines; 2114fcd2385SMaxime Ripard }; 2124fcd2385SMaxime Ripard 2134fcd2385SMaxime Ripard #define TV_MODE_PARAMETER(_mode, _lines, _line_dur, _hact, _hfp, \ 2144fcd2385SMaxime Ripard _hslen, _hbp, _hblk, _bt601_hfp, _vfp, \ 2154fcd2385SMaxime Ripard _vslen, _vbp) \ 2164fcd2385SMaxime Ripard [_mode] = { \ 2174fcd2385SMaxime Ripard .num_lines = _lines, \ 2184fcd2385SMaxime Ripard .line_duration_ns = _line_dur, \ 2194fcd2385SMaxime Ripard .hact_ns = _hact, \ 2204fcd2385SMaxime Ripard .hfp_ns = _hfp, \ 2214fcd2385SMaxime Ripard .hslen_ns = _hslen, \ 2224fcd2385SMaxime Ripard .hbp_ns = _hbp, \ 2234fcd2385SMaxime Ripard .hblk_ns = _hblk, \ 2244fcd2385SMaxime Ripard .bt601_hfp = _bt601_hfp, \ 2254fcd2385SMaxime Ripard .vfp_lines = _vfp, \ 2264fcd2385SMaxime Ripard .vslen_lines = _vslen, \ 2274fcd2385SMaxime Ripard .vbp_lines = _vbp, \ 2284fcd2385SMaxime Ripard } 2294fcd2385SMaxime Ripard 2304fcd2385SMaxime Ripard static const struct analog_parameters tv_modes_parameters[] = { 2314fcd2385SMaxime Ripard TV_MODE_PARAMETER(DRM_MODE_ANALOG_NTSC, 2324fcd2385SMaxime Ripard NTSC_LINES_NUMBER, 2334fcd2385SMaxime Ripard NTSC_LINE_DURATION_NS, 2344fcd2385SMaxime Ripard PARAM_RANGE(NTSC_HACT_DURATION_MIN_NS, 2354fcd2385SMaxime Ripard NTSC_HACT_DURATION_TYP_NS, 2364fcd2385SMaxime Ripard NTSC_HACT_DURATION_MAX_NS), 2374fcd2385SMaxime Ripard PARAM_RANGE(NTSC_HFP_DURATION_MIN_NS, 2384fcd2385SMaxime Ripard NTSC_HFP_DURATION_TYP_NS, 2394fcd2385SMaxime Ripard NTSC_HFP_DURATION_MAX_NS), 2404fcd2385SMaxime Ripard PARAM_RANGE(NTSC_HSLEN_DURATION_MIN_NS, 2414fcd2385SMaxime Ripard NTSC_HSLEN_DURATION_TYP_NS, 2424fcd2385SMaxime Ripard NTSC_HSLEN_DURATION_MAX_NS), 2434fcd2385SMaxime Ripard PARAM_RANGE(NTSC_HBP_DURATION_MIN_NS, 2444fcd2385SMaxime Ripard NTSC_HBP_DURATION_TYP_NS, 2454fcd2385SMaxime Ripard NTSC_HBP_DURATION_MAX_NS), 2464fcd2385SMaxime Ripard PARAM_RANGE(NTSC_HBLK_DURATION_MIN_NS, 2474fcd2385SMaxime Ripard NTSC_HBLK_DURATION_TYP_NS, 2484fcd2385SMaxime Ripard NTSC_HBLK_DURATION_MAX_NS), 2494fcd2385SMaxime Ripard 16, 2504fcd2385SMaxime Ripard PARAM_FIELD(3, 3), 2514fcd2385SMaxime Ripard PARAM_FIELD(3, 3), 2524fcd2385SMaxime Ripard PARAM_FIELD(16, 17)), 2534fcd2385SMaxime Ripard TV_MODE_PARAMETER(DRM_MODE_ANALOG_PAL, 2544fcd2385SMaxime Ripard PAL_LINES_NUMBER, 2554fcd2385SMaxime Ripard PAL_LINE_DURATION_NS, 2564fcd2385SMaxime Ripard PARAM_RANGE(PAL_HACT_DURATION_MIN_NS, 2574fcd2385SMaxime Ripard PAL_HACT_DURATION_TYP_NS, 2584fcd2385SMaxime Ripard PAL_HACT_DURATION_MAX_NS), 2594fcd2385SMaxime Ripard PARAM_RANGE(PAL_HFP_DURATION_MIN_NS, 2604fcd2385SMaxime Ripard PAL_HFP_DURATION_TYP_NS, 2614fcd2385SMaxime Ripard PAL_HFP_DURATION_MAX_NS), 2624fcd2385SMaxime Ripard PARAM_RANGE(PAL_HSLEN_DURATION_MIN_NS, 2634fcd2385SMaxime Ripard PAL_HSLEN_DURATION_TYP_NS, 2644fcd2385SMaxime Ripard PAL_HSLEN_DURATION_MAX_NS), 2654fcd2385SMaxime Ripard PARAM_RANGE(PAL_HBP_DURATION_MIN_NS, 2664fcd2385SMaxime Ripard PAL_HBP_DURATION_TYP_NS, 2674fcd2385SMaxime Ripard PAL_HBP_DURATION_MAX_NS), 2684fcd2385SMaxime Ripard PARAM_RANGE(PAL_HBLK_DURATION_MIN_NS, 2694fcd2385SMaxime Ripard PAL_HBLK_DURATION_TYP_NS, 2704fcd2385SMaxime Ripard PAL_HBLK_DURATION_MAX_NS), 2714fcd2385SMaxime Ripard 12, 2724fcd2385SMaxime Ripard 2734fcd2385SMaxime Ripard /* 2744fcd2385SMaxime Ripard * The front porch is actually 6 short sync 2754fcd2385SMaxime Ripard * pulses for the even field, and 5 for the 2764fcd2385SMaxime Ripard * odd field. Each sync takes half a life so 2774fcd2385SMaxime Ripard * the odd field front porch is shorter by 2784fcd2385SMaxime Ripard * half a line. 2794fcd2385SMaxime Ripard * 2804fcd2385SMaxime Ripard * In progressive, we're supposed to use 6 2814fcd2385SMaxime Ripard * pulses, so we're fine there 2824fcd2385SMaxime Ripard */ 2834fcd2385SMaxime Ripard PARAM_FIELD(3, 2), 2844fcd2385SMaxime Ripard 2854fcd2385SMaxime Ripard /* 2864fcd2385SMaxime Ripard * The vsync length is 5 long sync pulses, 2874fcd2385SMaxime Ripard * each field taking half a line. We're 2884fcd2385SMaxime Ripard * shorter for both fields by half a line. 2894fcd2385SMaxime Ripard * 2904fcd2385SMaxime Ripard * In progressive, we're supposed to use 5 2914fcd2385SMaxime Ripard * pulses, so we're off by half 2924fcd2385SMaxime Ripard * a line. 2934fcd2385SMaxime Ripard * 2944fcd2385SMaxime Ripard * In interlace, we're now off by half a line 2954fcd2385SMaxime Ripard * for the even field and one line for the odd 2964fcd2385SMaxime Ripard * field. 2974fcd2385SMaxime Ripard */ 2984fcd2385SMaxime Ripard PARAM_FIELD(3, 3), 2994fcd2385SMaxime Ripard 3004fcd2385SMaxime Ripard /* 3014fcd2385SMaxime Ripard * The back porch starts with post-equalizing 3024fcd2385SMaxime Ripard * pulses, consisting in 5 short sync pulses 3034fcd2385SMaxime Ripard * for the even field, 4 for the odd field. In 3044fcd2385SMaxime Ripard * progressive, it's 5 short syncs. 3054fcd2385SMaxime Ripard * 3064fcd2385SMaxime Ripard * In progressive, we thus have 2.5 lines, 3074fcd2385SMaxime Ripard * plus the 0.5 line we were missing 3084fcd2385SMaxime Ripard * previously, so we should use 3 lines. 3094fcd2385SMaxime Ripard * 3104fcd2385SMaxime Ripard * In interlace, the even field is in the 3114fcd2385SMaxime Ripard * exact same case than progressive. For the 3124fcd2385SMaxime Ripard * odd field, we should be using 2 lines but 3134fcd2385SMaxime Ripard * we're one line short, so we'll make up for 3144fcd2385SMaxime Ripard * it here by using 3. 3154fcd2385SMaxime Ripard * 3164fcd2385SMaxime Ripard * The entire blanking area is supposed to 3174fcd2385SMaxime Ripard * take 25 lines, so we also need to account 3184fcd2385SMaxime Ripard * for the rest of the blanking area that 3194fcd2385SMaxime Ripard * can't be in either the front porch or sync 3204fcd2385SMaxime Ripard * period. 3214fcd2385SMaxime Ripard */ 3224fcd2385SMaxime Ripard PARAM_FIELD(19, 20)), 3234fcd2385SMaxime Ripard }; 3244fcd2385SMaxime Ripard 3254fcd2385SMaxime Ripard static int fill_analog_mode(struct drm_device *dev, 3264fcd2385SMaxime Ripard struct drm_display_mode *mode, 3274fcd2385SMaxime Ripard const struct analog_parameters *params, 3284fcd2385SMaxime Ripard unsigned long pixel_clock_hz, 3294fcd2385SMaxime Ripard unsigned int hactive, 3304fcd2385SMaxime Ripard unsigned int vactive, 3314fcd2385SMaxime Ripard bool interlace) 3324fcd2385SMaxime Ripard { 3334fcd2385SMaxime Ripard unsigned long pixel_duration_ns = NSEC_PER_SEC / pixel_clock_hz; 3344fcd2385SMaxime Ripard unsigned int htotal, vtotal; 3354fcd2385SMaxime Ripard unsigned int max_hact, hact_duration_ns; 3364fcd2385SMaxime Ripard unsigned int hblk, hblk_duration_ns; 3374fcd2385SMaxime Ripard unsigned int hfp, hfp_duration_ns; 3384fcd2385SMaxime Ripard unsigned int hslen, hslen_duration_ns; 3394fcd2385SMaxime Ripard unsigned int hbp, hbp_duration_ns; 3404fcd2385SMaxime Ripard unsigned int porches, porches_duration_ns; 3414fcd2385SMaxime Ripard unsigned int vfp, vfp_min; 3424fcd2385SMaxime Ripard unsigned int vbp, vbp_min; 3434fcd2385SMaxime Ripard unsigned int vslen; 3444fcd2385SMaxime Ripard bool bt601 = false; 3454fcd2385SMaxime Ripard int porches_rem; 3464fcd2385SMaxime Ripard u64 result; 3474fcd2385SMaxime Ripard 3484fcd2385SMaxime Ripard drm_dbg_kms(dev, 3494fcd2385SMaxime Ripard "Generating a %ux%u%c, %u-line mode with a %lu kHz clock\n", 3504fcd2385SMaxime Ripard hactive, vactive, 3514fcd2385SMaxime Ripard interlace ? 'i' : 'p', 3524fcd2385SMaxime Ripard params->num_lines, 3534fcd2385SMaxime Ripard pixel_clock_hz / 1000); 3544fcd2385SMaxime Ripard 3554fcd2385SMaxime Ripard max_hact = params->hact_ns.max / pixel_duration_ns; 3564fcd2385SMaxime Ripard if (pixel_clock_hz == 13500000 && hactive > max_hact && hactive <= 720) { 3574fcd2385SMaxime Ripard drm_dbg_kms(dev, "Trying to generate a BT.601 mode. Disabling checks.\n"); 3584fcd2385SMaxime Ripard bt601 = true; 3594fcd2385SMaxime Ripard } 3604fcd2385SMaxime Ripard 3614fcd2385SMaxime Ripard /* 3624fcd2385SMaxime Ripard * Our pixel duration is going to be round down by the division, 3634fcd2385SMaxime Ripard * so rounding up is probably going to introduce even more 3644fcd2385SMaxime Ripard * deviation. 3654fcd2385SMaxime Ripard */ 3664fcd2385SMaxime Ripard result = (u64)params->line_duration_ns * pixel_clock_hz; 3674fcd2385SMaxime Ripard do_div(result, NSEC_PER_SEC); 3684fcd2385SMaxime Ripard htotal = result; 3694fcd2385SMaxime Ripard 3704fcd2385SMaxime Ripard drm_dbg_kms(dev, "Total Horizontal Number of Pixels: %u\n", htotal); 3714fcd2385SMaxime Ripard 3724fcd2385SMaxime Ripard hact_duration_ns = hactive * pixel_duration_ns; 3734fcd2385SMaxime Ripard if (!bt601 && 3744fcd2385SMaxime Ripard (hact_duration_ns < params->hact_ns.min || 3754fcd2385SMaxime Ripard hact_duration_ns > params->hact_ns.max)) { 3760ae55a4cSJani Nikula drm_err(dev, "Invalid horizontal active area duration: %uns (min: %u, max %u)\n", 3774fcd2385SMaxime Ripard hact_duration_ns, params->hact_ns.min, params->hact_ns.max); 3784fcd2385SMaxime Ripard return -EINVAL; 3794fcd2385SMaxime Ripard } 3804fcd2385SMaxime Ripard 3814fcd2385SMaxime Ripard hblk = htotal - hactive; 3824fcd2385SMaxime Ripard drm_dbg_kms(dev, "Horizontal Blanking Period: %u\n", hblk); 3834fcd2385SMaxime Ripard 3844fcd2385SMaxime Ripard hblk_duration_ns = hblk * pixel_duration_ns; 3854fcd2385SMaxime Ripard if (!bt601 && 3864fcd2385SMaxime Ripard (hblk_duration_ns < params->hblk_ns.min || 3874fcd2385SMaxime Ripard hblk_duration_ns > params->hblk_ns.max)) { 3880ae55a4cSJani Nikula drm_err(dev, "Invalid horizontal blanking duration: %uns (min: %u, max %u)\n", 3894fcd2385SMaxime Ripard hblk_duration_ns, params->hblk_ns.min, params->hblk_ns.max); 3904fcd2385SMaxime Ripard return -EINVAL; 3914fcd2385SMaxime Ripard } 3924fcd2385SMaxime Ripard 3934fcd2385SMaxime Ripard hslen = DIV_ROUND_UP(params->hslen_ns.typ, pixel_duration_ns); 3944fcd2385SMaxime Ripard drm_dbg_kms(dev, "Horizontal Sync Period: %u\n", hslen); 3954fcd2385SMaxime Ripard 3964fcd2385SMaxime Ripard hslen_duration_ns = hslen * pixel_duration_ns; 3974fcd2385SMaxime Ripard if (!bt601 && 3984fcd2385SMaxime Ripard (hslen_duration_ns < params->hslen_ns.min || 3994fcd2385SMaxime Ripard hslen_duration_ns > params->hslen_ns.max)) { 4000ae55a4cSJani Nikula drm_err(dev, "Invalid horizontal sync duration: %uns (min: %u, max %u)\n", 4014fcd2385SMaxime Ripard hslen_duration_ns, params->hslen_ns.min, params->hslen_ns.max); 4024fcd2385SMaxime Ripard return -EINVAL; 4034fcd2385SMaxime Ripard } 4044fcd2385SMaxime Ripard 4054fcd2385SMaxime Ripard porches = hblk - hslen; 4064fcd2385SMaxime Ripard drm_dbg_kms(dev, "Remaining horizontal pixels for both porches: %u\n", porches); 4074fcd2385SMaxime Ripard 4084fcd2385SMaxime Ripard porches_duration_ns = porches * pixel_duration_ns; 4094fcd2385SMaxime Ripard if (!bt601 && 4104fcd2385SMaxime Ripard (porches_duration_ns > (params->hfp_ns.max + params->hbp_ns.max) || 4114fcd2385SMaxime Ripard porches_duration_ns < (params->hfp_ns.min + params->hbp_ns.min))) { 4120ae55a4cSJani Nikula drm_err(dev, "Invalid horizontal porches duration: %uns\n", 4130ae55a4cSJani Nikula porches_duration_ns); 4144fcd2385SMaxime Ripard return -EINVAL; 4154fcd2385SMaxime Ripard } 4164fcd2385SMaxime Ripard 4174fcd2385SMaxime Ripard if (bt601) { 4184fcd2385SMaxime Ripard hfp = params->bt601_hfp; 4194fcd2385SMaxime Ripard } else { 4204fcd2385SMaxime Ripard unsigned int hfp_min = DIV_ROUND_UP(params->hfp_ns.min, 4214fcd2385SMaxime Ripard pixel_duration_ns); 4224fcd2385SMaxime Ripard unsigned int hbp_min = DIV_ROUND_UP(params->hbp_ns.min, 4234fcd2385SMaxime Ripard pixel_duration_ns); 4244fcd2385SMaxime Ripard int porches_rem = porches - hfp_min - hbp_min; 4254fcd2385SMaxime Ripard 4264fcd2385SMaxime Ripard hfp = hfp_min + DIV_ROUND_UP(porches_rem, 2); 4274fcd2385SMaxime Ripard } 4284fcd2385SMaxime Ripard 4294fcd2385SMaxime Ripard drm_dbg_kms(dev, "Horizontal Front Porch: %u\n", hfp); 4304fcd2385SMaxime Ripard 4314fcd2385SMaxime Ripard hfp_duration_ns = hfp * pixel_duration_ns; 4324fcd2385SMaxime Ripard if (!bt601 && 4334fcd2385SMaxime Ripard (hfp_duration_ns < params->hfp_ns.min || 4344fcd2385SMaxime Ripard hfp_duration_ns > params->hfp_ns.max)) { 4350ae55a4cSJani Nikula drm_err(dev, "Invalid horizontal front porch duration: %uns (min: %u, max %u)\n", 4364fcd2385SMaxime Ripard hfp_duration_ns, params->hfp_ns.min, params->hfp_ns.max); 4374fcd2385SMaxime Ripard return -EINVAL; 4384fcd2385SMaxime Ripard } 4394fcd2385SMaxime Ripard 4404fcd2385SMaxime Ripard hbp = porches - hfp; 4414fcd2385SMaxime Ripard drm_dbg_kms(dev, "Horizontal Back Porch: %u\n", hbp); 4424fcd2385SMaxime Ripard 4434fcd2385SMaxime Ripard hbp_duration_ns = hbp * pixel_duration_ns; 4444fcd2385SMaxime Ripard if (!bt601 && 4454fcd2385SMaxime Ripard (hbp_duration_ns < params->hbp_ns.min || 4464fcd2385SMaxime Ripard hbp_duration_ns > params->hbp_ns.max)) { 4470ae55a4cSJani Nikula drm_err(dev, "Invalid horizontal back porch duration: %uns (min: %u, max %u)\n", 4484fcd2385SMaxime Ripard hbp_duration_ns, params->hbp_ns.min, params->hbp_ns.max); 4494fcd2385SMaxime Ripard return -EINVAL; 4504fcd2385SMaxime Ripard } 4514fcd2385SMaxime Ripard 4524fcd2385SMaxime Ripard if (htotal != (hactive + hfp + hslen + hbp)) 4534fcd2385SMaxime Ripard return -EINVAL; 4544fcd2385SMaxime Ripard 4554fcd2385SMaxime Ripard mode->clock = pixel_clock_hz / 1000; 4564fcd2385SMaxime Ripard mode->hdisplay = hactive; 4574fcd2385SMaxime Ripard mode->hsync_start = mode->hdisplay + hfp; 4584fcd2385SMaxime Ripard mode->hsync_end = mode->hsync_start + hslen; 4594fcd2385SMaxime Ripard mode->htotal = mode->hsync_end + hbp; 4604fcd2385SMaxime Ripard 4614fcd2385SMaxime Ripard if (interlace) { 4624fcd2385SMaxime Ripard vfp_min = params->vfp_lines.even + params->vfp_lines.odd; 4634fcd2385SMaxime Ripard vbp_min = params->vbp_lines.even + params->vbp_lines.odd; 4644fcd2385SMaxime Ripard vslen = params->vslen_lines.even + params->vslen_lines.odd; 4654fcd2385SMaxime Ripard } else { 4664fcd2385SMaxime Ripard /* 4674fcd2385SMaxime Ripard * By convention, NTSC (aka 525/60) systems start with 4684fcd2385SMaxime Ripard * the even field, but PAL (aka 625/50) systems start 4694fcd2385SMaxime Ripard * with the odd one. 4704fcd2385SMaxime Ripard * 4714fcd2385SMaxime Ripard * PAL systems also have asymmetric timings between the 4724fcd2385SMaxime Ripard * even and odd field, while NTSC is symmetric. 4734fcd2385SMaxime Ripard * 4744fcd2385SMaxime Ripard * Moreover, if we want to create a progressive mode for 4754fcd2385SMaxime Ripard * PAL, we need to use the odd field timings. 4764fcd2385SMaxime Ripard * 4774fcd2385SMaxime Ripard * Since odd == even for NTSC, we can just use the odd 4784fcd2385SMaxime Ripard * one all the time to simplify the code a bit. 4794fcd2385SMaxime Ripard */ 4804fcd2385SMaxime Ripard vfp_min = params->vfp_lines.odd; 4814fcd2385SMaxime Ripard vbp_min = params->vbp_lines.odd; 4824fcd2385SMaxime Ripard vslen = params->vslen_lines.odd; 4834fcd2385SMaxime Ripard } 4844fcd2385SMaxime Ripard 4854fcd2385SMaxime Ripard drm_dbg_kms(dev, "Vertical Sync Period: %u\n", vslen); 4864fcd2385SMaxime Ripard 4874fcd2385SMaxime Ripard porches = params->num_lines - vactive - vslen; 4884fcd2385SMaxime Ripard drm_dbg_kms(dev, "Remaining vertical pixels for both porches: %u\n", porches); 4894fcd2385SMaxime Ripard 4904fcd2385SMaxime Ripard porches_rem = porches - vfp_min - vbp_min; 4914fcd2385SMaxime Ripard vfp = vfp_min + (porches_rem / 2); 4924fcd2385SMaxime Ripard drm_dbg_kms(dev, "Vertical Front Porch: %u\n", vfp); 4934fcd2385SMaxime Ripard 4944fcd2385SMaxime Ripard vbp = porches - vfp; 4954fcd2385SMaxime Ripard drm_dbg_kms(dev, "Vertical Back Porch: %u\n", vbp); 4964fcd2385SMaxime Ripard 4974fcd2385SMaxime Ripard vtotal = vactive + vfp + vslen + vbp; 4984fcd2385SMaxime Ripard if (params->num_lines != vtotal) { 4990ae55a4cSJani Nikula drm_err(dev, "Invalid vertical total: %upx (expected %upx)\n", 5004fcd2385SMaxime Ripard vtotal, params->num_lines); 5014fcd2385SMaxime Ripard return -EINVAL; 5024fcd2385SMaxime Ripard } 5034fcd2385SMaxime Ripard 5044fcd2385SMaxime Ripard mode->vdisplay = vactive; 5054fcd2385SMaxime Ripard mode->vsync_start = mode->vdisplay + vfp; 5064fcd2385SMaxime Ripard mode->vsync_end = mode->vsync_start + vslen; 5074fcd2385SMaxime Ripard mode->vtotal = mode->vsync_end + vbp; 5084fcd2385SMaxime Ripard 5094fcd2385SMaxime Ripard if (mode->vtotal != params->num_lines) 5104fcd2385SMaxime Ripard return -EINVAL; 5114fcd2385SMaxime Ripard 5124fcd2385SMaxime Ripard mode->type = DRM_MODE_TYPE_DRIVER; 5134fcd2385SMaxime Ripard mode->flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC; 5144fcd2385SMaxime Ripard if (interlace) 5154fcd2385SMaxime Ripard mode->flags |= DRM_MODE_FLAG_INTERLACE; 5164fcd2385SMaxime Ripard 5174fcd2385SMaxime Ripard drm_mode_set_name(mode); 5184fcd2385SMaxime Ripard 5194fcd2385SMaxime Ripard drm_dbg_kms(dev, "Generated mode " DRM_MODE_FMT "\n", DRM_MODE_ARG(mode)); 5204fcd2385SMaxime Ripard 5214fcd2385SMaxime Ripard return 0; 5224fcd2385SMaxime Ripard } 5234fcd2385SMaxime Ripard 5244fcd2385SMaxime Ripard /** 5254fcd2385SMaxime Ripard * drm_analog_tv_mode - create a display mode for an analog TV 5264fcd2385SMaxime Ripard * @dev: drm device 5274fcd2385SMaxime Ripard * @tv_mode: TV Mode standard to create a mode for. See DRM_MODE_TV_MODE_*. 5284fcd2385SMaxime Ripard * @pixel_clock_hz: Pixel Clock Frequency, in Hertz 5294fcd2385SMaxime Ripard * @hdisplay: hdisplay size 5304fcd2385SMaxime Ripard * @vdisplay: vdisplay size 5314fcd2385SMaxime Ripard * @interlace: whether to compute an interlaced mode 5324fcd2385SMaxime Ripard * 5334fcd2385SMaxime Ripard * This function creates a struct drm_display_mode instance suited for 534*41474d25SNick Hollinghurst * an analog TV output, for one of the usual analog TV modes. Where 535*41474d25SNick Hollinghurst * this is DRM_MODE_TV_MODE_MONOCHROME, a 625-line mode will be created. 5364fcd2385SMaxime Ripard * 5374fcd2385SMaxime Ripard * Note that @hdisplay is larger than the usual constraints for the PAL 5384fcd2385SMaxime Ripard * and NTSC timings, and we'll choose to ignore most timings constraints 5394fcd2385SMaxime Ripard * to reach those resolutions. 5404fcd2385SMaxime Ripard * 5414fcd2385SMaxime Ripard * Returns: 5424fcd2385SMaxime Ripard * 5434fcd2385SMaxime Ripard * A pointer to the mode, allocated with drm_mode_create(). Returns NULL 5444fcd2385SMaxime Ripard * on error. 5454fcd2385SMaxime Ripard */ 5464fcd2385SMaxime Ripard struct drm_display_mode *drm_analog_tv_mode(struct drm_device *dev, 5474fcd2385SMaxime Ripard enum drm_connector_tv_mode tv_mode, 5484fcd2385SMaxime Ripard unsigned long pixel_clock_hz, 5494fcd2385SMaxime Ripard unsigned int hdisplay, 5504fcd2385SMaxime Ripard unsigned int vdisplay, 5514fcd2385SMaxime Ripard bool interlace) 5524fcd2385SMaxime Ripard { 5534fcd2385SMaxime Ripard struct drm_display_mode *mode; 5544fcd2385SMaxime Ripard enum drm_mode_analog analog; 5554fcd2385SMaxime Ripard int ret; 5564fcd2385SMaxime Ripard 5574fcd2385SMaxime Ripard switch (tv_mode) { 5584fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_NTSC: 5594fcd2385SMaxime Ripard fallthrough; 5604fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_NTSC_443: 5614fcd2385SMaxime Ripard fallthrough; 5624fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_NTSC_J: 5634fcd2385SMaxime Ripard fallthrough; 5644fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_PAL_M: 5654fcd2385SMaxime Ripard analog = DRM_MODE_ANALOG_NTSC; 5664fcd2385SMaxime Ripard break; 5674fcd2385SMaxime Ripard 5684fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_PAL: 5694fcd2385SMaxime Ripard fallthrough; 5704fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_PAL_N: 5714fcd2385SMaxime Ripard fallthrough; 5724fcd2385SMaxime Ripard case DRM_MODE_TV_MODE_SECAM: 573*41474d25SNick Hollinghurst fallthrough; 574*41474d25SNick Hollinghurst case DRM_MODE_TV_MODE_MONOCHROME: 5754fcd2385SMaxime Ripard analog = DRM_MODE_ANALOG_PAL; 5764fcd2385SMaxime Ripard break; 5774fcd2385SMaxime Ripard 5784fcd2385SMaxime Ripard default: 5794fcd2385SMaxime Ripard return NULL; 5804fcd2385SMaxime Ripard } 5814fcd2385SMaxime Ripard 5824fcd2385SMaxime Ripard mode = drm_mode_create(dev); 5834fcd2385SMaxime Ripard if (!mode) 5844fcd2385SMaxime Ripard return NULL; 5854fcd2385SMaxime Ripard 5864fcd2385SMaxime Ripard ret = fill_analog_mode(dev, mode, 5874fcd2385SMaxime Ripard &tv_modes_parameters[analog], 5884fcd2385SMaxime Ripard pixel_clock_hz, hdisplay, vdisplay, interlace); 5894fcd2385SMaxime Ripard if (ret) 5904fcd2385SMaxime Ripard goto err_free_mode; 5914fcd2385SMaxime Ripard 5924fcd2385SMaxime Ripard return mode; 5934fcd2385SMaxime Ripard 5944fcd2385SMaxime Ripard err_free_mode: 5954fcd2385SMaxime Ripard drm_mode_destroy(dev, mode); 5964fcd2385SMaxime Ripard return NULL; 5974fcd2385SMaxime Ripard } 5984fcd2385SMaxime Ripard EXPORT_SYMBOL(drm_analog_tv_mode); 5994fcd2385SMaxime Ripard 6008bd441b2SDaniel Vetter /** 601f5aabb97SDaniel Vetter * drm_cvt_mode -create a modeline based on the CVT algorithm 602f5aabb97SDaniel Vetter * @dev: drm device 603d782c3f9SZhao Yakui * @hdisplay: hdisplay size 604d782c3f9SZhao Yakui * @vdisplay: vdisplay size 605d782c3f9SZhao Yakui * @vrefresh: vrefresh rate 606f5aabb97SDaniel Vetter * @reduced: whether to use reduced blanking 607f5aabb97SDaniel Vetter * @interlaced: whether to compute an interlaced mode 608f5aabb97SDaniel Vetter * @margins: whether to add margins (borders) 609d782c3f9SZhao Yakui * 610d782c3f9SZhao Yakui * This function is called to generate the modeline based on CVT algorithm 611d782c3f9SZhao Yakui * according to the hdisplay, vdisplay, vrefresh. 612d782c3f9SZhao Yakui * It is based from the VESA(TM) Coordinated Video Timing Generator by 613d782c3f9SZhao Yakui * Graham Loveridge April 9, 2003 available at 614631dd1a8SJustin P. Mattock * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls 615d782c3f9SZhao Yakui * 616d782c3f9SZhao Yakui * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. 617d782c3f9SZhao Yakui * What I have done is to translate it by using integer calculation. 618f5aabb97SDaniel Vetter * 619f5aabb97SDaniel Vetter * Returns: 620f5aabb97SDaniel Vetter * The modeline based on the CVT algorithm stored in a drm_display_mode object. 621f5aabb97SDaniel Vetter * The display mode object is allocated with drm_mode_create(). Returns NULL 622f5aabb97SDaniel Vetter * when no mode could be allocated. 623d782c3f9SZhao Yakui */ 624d782c3f9SZhao Yakui struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, 625d782c3f9SZhao Yakui int vdisplay, int vrefresh, 626d50ba256SDave Airlie bool reduced, bool interlaced, bool margins) 627d782c3f9SZhao Yakui { 6283ec0db81SDaniel Vetter #define HV_FACTOR 1000 629d782c3f9SZhao Yakui /* 1) top/bottom margin size (% of height) - default: 1.8, */ 630d782c3f9SZhao Yakui #define CVT_MARGIN_PERCENTAGE 18 631d782c3f9SZhao Yakui /* 2) character cell horizontal granularity (pixels) - default 8 */ 632d782c3f9SZhao Yakui #define CVT_H_GRANULARITY 8 633d782c3f9SZhao Yakui /* 3) Minimum vertical porch (lines) - default 3 */ 634d782c3f9SZhao Yakui #define CVT_MIN_V_PORCH 3 635d782c3f9SZhao Yakui /* 4) Minimum number of vertical back porch lines - default 6 */ 636d782c3f9SZhao Yakui #define CVT_MIN_V_BPORCH 6 637d782c3f9SZhao Yakui /* Pixel Clock step (kHz) */ 638d782c3f9SZhao Yakui #define CVT_CLOCK_STEP 250 639d782c3f9SZhao Yakui struct drm_display_mode *drm_mode; 640d782c3f9SZhao Yakui unsigned int vfieldrate, hperiod; 641d782c3f9SZhao Yakui int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync; 642d782c3f9SZhao Yakui int interlace; 6438a5bbf32SChris Wilson u64 tmp; 644d782c3f9SZhao Yakui 6457f3bbc0bSDmitry Osipenko if (!hdisplay || !vdisplay) 6467f3bbc0bSDmitry Osipenko return NULL; 6477f3bbc0bSDmitry Osipenko 648d782c3f9SZhao Yakui /* allocate the drm_display_mode structure. If failure, we will 649d782c3f9SZhao Yakui * return directly 650d782c3f9SZhao Yakui */ 651d782c3f9SZhao Yakui drm_mode = drm_mode_create(dev); 652d782c3f9SZhao Yakui if (!drm_mode) 653d782c3f9SZhao Yakui return NULL; 654d782c3f9SZhao Yakui 655d782c3f9SZhao Yakui /* the CVT default refresh rate is 60Hz */ 656d782c3f9SZhao Yakui if (!vrefresh) 657d782c3f9SZhao Yakui vrefresh = 60; 658d782c3f9SZhao Yakui 659d782c3f9SZhao Yakui /* the required field fresh rate */ 660d782c3f9SZhao Yakui if (interlaced) 661d782c3f9SZhao Yakui vfieldrate = vrefresh * 2; 662d782c3f9SZhao Yakui else 663d782c3f9SZhao Yakui vfieldrate = vrefresh; 664d782c3f9SZhao Yakui 665d782c3f9SZhao Yakui /* horizontal pixels */ 666d782c3f9SZhao Yakui hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY); 667d782c3f9SZhao Yakui 668d782c3f9SZhao Yakui /* determine the left&right borders */ 669d782c3f9SZhao Yakui hmargin = 0; 670d782c3f9SZhao Yakui if (margins) { 671d782c3f9SZhao Yakui hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; 672d782c3f9SZhao Yakui hmargin -= hmargin % CVT_H_GRANULARITY; 673d782c3f9SZhao Yakui } 674d782c3f9SZhao Yakui /* find the total active pixels */ 675d782c3f9SZhao Yakui drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin; 676d782c3f9SZhao Yakui 677d782c3f9SZhao Yakui /* find the number of lines per field */ 678d782c3f9SZhao Yakui if (interlaced) 679d782c3f9SZhao Yakui vdisplay_rnd = vdisplay / 2; 680d782c3f9SZhao Yakui else 681d782c3f9SZhao Yakui vdisplay_rnd = vdisplay; 682d782c3f9SZhao Yakui 683d782c3f9SZhao Yakui /* find the top & bottom borders */ 684d782c3f9SZhao Yakui vmargin = 0; 685d782c3f9SZhao Yakui if (margins) 686d782c3f9SZhao Yakui vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; 687d782c3f9SZhao Yakui 688841b4117SFrancisco Jerez drm_mode->vdisplay = vdisplay + 2 * vmargin; 689d782c3f9SZhao Yakui 690d782c3f9SZhao Yakui /* Interlaced */ 691d782c3f9SZhao Yakui if (interlaced) 692d782c3f9SZhao Yakui interlace = 1; 693d782c3f9SZhao Yakui else 694d782c3f9SZhao Yakui interlace = 0; 695d782c3f9SZhao Yakui 696d782c3f9SZhao Yakui /* Determine VSync Width from aspect ratio */ 697d782c3f9SZhao Yakui if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay)) 698d782c3f9SZhao Yakui vsync = 4; 699d782c3f9SZhao Yakui else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay)) 700d782c3f9SZhao Yakui vsync = 5; 701d782c3f9SZhao Yakui else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay)) 702d782c3f9SZhao Yakui vsync = 6; 703d782c3f9SZhao Yakui else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay)) 704d782c3f9SZhao Yakui vsync = 7; 705d782c3f9SZhao Yakui else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay)) 706d782c3f9SZhao Yakui vsync = 7; 707d782c3f9SZhao Yakui else /* custom */ 708d782c3f9SZhao Yakui vsync = 10; 709d782c3f9SZhao Yakui 710d782c3f9SZhao Yakui if (!reduced) { 711d782c3f9SZhao Yakui /* simplify the GTF calculation */ 712d782c3f9SZhao Yakui /* 4) Minimum time of vertical sync + back porch interval (µs) 713d782c3f9SZhao Yakui * default 550.0 714d782c3f9SZhao Yakui */ 715d782c3f9SZhao Yakui int tmp1, tmp2; 716d782c3f9SZhao Yakui #define CVT_MIN_VSYNC_BP 550 717d782c3f9SZhao Yakui /* 3) Nominal HSync width (% of line period) - default 8 */ 718d782c3f9SZhao Yakui #define CVT_HSYNC_PERCENTAGE 8 719d782c3f9SZhao Yakui unsigned int hblank_percentage; 720f199af00SBenjamin Gaignard int vsyncandback_porch, __maybe_unused vback_porch, hblank; 721d782c3f9SZhao Yakui 722d782c3f9SZhao Yakui /* estimated the horizontal period */ 723d782c3f9SZhao Yakui tmp1 = HV_FACTOR * 1000000 - 724d782c3f9SZhao Yakui CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate; 725d782c3f9SZhao Yakui tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 + 726d782c3f9SZhao Yakui interlace; 727d782c3f9SZhao Yakui hperiod = tmp1 * 2 / (tmp2 * vfieldrate); 728d782c3f9SZhao Yakui 729d782c3f9SZhao Yakui tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1; 730d782c3f9SZhao Yakui /* 9. Find number of lines in sync + backporch */ 731d782c3f9SZhao Yakui if (tmp1 < (vsync + CVT_MIN_V_PORCH)) 732d782c3f9SZhao Yakui vsyncandback_porch = vsync + CVT_MIN_V_PORCH; 733d782c3f9SZhao Yakui else 734d782c3f9SZhao Yakui vsyncandback_porch = tmp1; 735d782c3f9SZhao Yakui /* 10. Find number of lines in back porch */ 736d782c3f9SZhao Yakui vback_porch = vsyncandback_porch - vsync; 737d782c3f9SZhao Yakui drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + 738d782c3f9SZhao Yakui vsyncandback_porch + CVT_MIN_V_PORCH; 739d782c3f9SZhao Yakui /* 5) Definition of Horizontal blanking time limitation */ 740d782c3f9SZhao Yakui /* Gradient (%/kHz) - default 600 */ 741d782c3f9SZhao Yakui #define CVT_M_FACTOR 600 742d782c3f9SZhao Yakui /* Offset (%) - default 40 */ 743d782c3f9SZhao Yakui #define CVT_C_FACTOR 40 744d782c3f9SZhao Yakui /* Blanking time scaling factor - default 128 */ 745d782c3f9SZhao Yakui #define CVT_K_FACTOR 128 746d782c3f9SZhao Yakui /* Scaling factor weighting - default 20 */ 747d782c3f9SZhao Yakui #define CVT_J_FACTOR 20 748d782c3f9SZhao Yakui #define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256) 749d782c3f9SZhao Yakui #define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \ 750d782c3f9SZhao Yakui CVT_J_FACTOR) 751d782c3f9SZhao Yakui /* 12. Find ideal blanking duty cycle from formula */ 752d782c3f9SZhao Yakui hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME * 753d782c3f9SZhao Yakui hperiod / 1000; 754d782c3f9SZhao Yakui /* 13. Blanking time */ 755d782c3f9SZhao Yakui if (hblank_percentage < 20 * HV_FACTOR) 756d782c3f9SZhao Yakui hblank_percentage = 20 * HV_FACTOR; 757d782c3f9SZhao Yakui hblank = drm_mode->hdisplay * hblank_percentage / 758d782c3f9SZhao Yakui (100 * HV_FACTOR - hblank_percentage); 759d782c3f9SZhao Yakui hblank -= hblank % (2 * CVT_H_GRANULARITY); 7602a97acd6SYannick Guerrini /* 14. find the total pixels per line */ 761d782c3f9SZhao Yakui drm_mode->htotal = drm_mode->hdisplay + hblank; 762d782c3f9SZhao Yakui drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2; 763d782c3f9SZhao Yakui drm_mode->hsync_start = drm_mode->hsync_end - 764d782c3f9SZhao Yakui (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100; 765d782c3f9SZhao Yakui drm_mode->hsync_start += CVT_H_GRANULARITY - 766d782c3f9SZhao Yakui drm_mode->hsync_start % CVT_H_GRANULARITY; 767d782c3f9SZhao Yakui /* fill the Vsync values */ 768d782c3f9SZhao Yakui drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH; 769d782c3f9SZhao Yakui drm_mode->vsync_end = drm_mode->vsync_start + vsync; 770d782c3f9SZhao Yakui } else { 771d782c3f9SZhao Yakui /* Reduced blanking */ 772d782c3f9SZhao Yakui /* Minimum vertical blanking interval time (µs)- default 460 */ 773d782c3f9SZhao Yakui #define CVT_RB_MIN_VBLANK 460 774d782c3f9SZhao Yakui /* Fixed number of clocks for horizontal sync */ 775d782c3f9SZhao Yakui #define CVT_RB_H_SYNC 32 776d782c3f9SZhao Yakui /* Fixed number of clocks for horizontal blanking */ 777d782c3f9SZhao Yakui #define CVT_RB_H_BLANK 160 778d782c3f9SZhao Yakui /* Fixed number of lines for vertical front porch - default 3*/ 779d782c3f9SZhao Yakui #define CVT_RB_VFPORCH 3 780d782c3f9SZhao Yakui int vbilines; 781d782c3f9SZhao Yakui int tmp1, tmp2; 782d782c3f9SZhao Yakui /* 8. Estimate Horizontal period. */ 783d782c3f9SZhao Yakui tmp1 = HV_FACTOR * 1000000 - 784d782c3f9SZhao Yakui CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate; 785d782c3f9SZhao Yakui tmp2 = vdisplay_rnd + 2 * vmargin; 786d782c3f9SZhao Yakui hperiod = tmp1 / (tmp2 * vfieldrate); 787d782c3f9SZhao Yakui /* 9. Find number of lines in vertical blanking */ 788d782c3f9SZhao Yakui vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1; 789d782c3f9SZhao Yakui /* 10. Check if vertical blanking is sufficient */ 790d782c3f9SZhao Yakui if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH)) 791d782c3f9SZhao Yakui vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH; 792d782c3f9SZhao Yakui /* 11. Find total number of lines in vertical field */ 793d782c3f9SZhao Yakui drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines; 794d782c3f9SZhao Yakui /* 12. Find total number of pixels in a line */ 795d782c3f9SZhao Yakui drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK; 796d782c3f9SZhao Yakui /* Fill in HSync values */ 797d782c3f9SZhao Yakui drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2; 798adde0f23SAdam Jackson drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC; 799adde0f23SAdam Jackson /* Fill in VSync values */ 800adde0f23SAdam Jackson drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH; 801adde0f23SAdam Jackson drm_mode->vsync_end = drm_mode->vsync_start + vsync; 802d782c3f9SZhao Yakui } 803d782c3f9SZhao Yakui /* 15/13. Find pixel clock frequency (kHz for xf86) */ 8048a5bbf32SChris Wilson tmp = drm_mode->htotal; /* perform intermediate calcs in u64 */ 8058a5bbf32SChris Wilson tmp *= HV_FACTOR * 1000; 8068a5bbf32SChris Wilson do_div(tmp, hperiod); 8078a5bbf32SChris Wilson tmp -= drm_mode->clock % CVT_CLOCK_STEP; 8088a5bbf32SChris Wilson drm_mode->clock = tmp; 809d782c3f9SZhao Yakui /* 18/16. Find actual vertical frame frequency */ 810d782c3f9SZhao Yakui /* ignore - just set the mode flag for interlaced */ 811171fdd89SAdam Jackson if (interlaced) { 812d782c3f9SZhao Yakui drm_mode->vtotal *= 2; 813171fdd89SAdam Jackson drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; 814171fdd89SAdam Jackson } 815d782c3f9SZhao Yakui /* Fill the mode line name */ 816d782c3f9SZhao Yakui drm_mode_set_name(drm_mode); 817d782c3f9SZhao Yakui if (reduced) 818d782c3f9SZhao Yakui drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC | 819d782c3f9SZhao Yakui DRM_MODE_FLAG_NVSYNC); 820d782c3f9SZhao Yakui else 821d782c3f9SZhao Yakui drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | 822d782c3f9SZhao Yakui DRM_MODE_FLAG_NHSYNC); 823d782c3f9SZhao Yakui 824d782c3f9SZhao Yakui return drm_mode; 825d782c3f9SZhao Yakui } 826d782c3f9SZhao Yakui EXPORT_SYMBOL(drm_cvt_mode); 827d782c3f9SZhao Yakui 828d782c3f9SZhao Yakui /** 829f5aabb97SDaniel Vetter * drm_gtf_mode_complex - create the modeline based on the full GTF algorithm 83026bbdadaSZhao Yakui * @dev: drm device 83126bbdadaSZhao Yakui * @hdisplay: hdisplay size 83226bbdadaSZhao Yakui * @vdisplay: vdisplay size 83326bbdadaSZhao Yakui * @vrefresh: vrefresh rate. 834f5aabb97SDaniel Vetter * @interlaced: whether to compute an interlaced mode 835f5aabb97SDaniel Vetter * @margins: desired margin (borders) size 8363ec0db81SDaniel Vetter * @GTF_M: extended GTF formula parameters 8373ec0db81SDaniel Vetter * @GTF_2C: extended GTF formula parameters 8383ec0db81SDaniel Vetter * @GTF_K: extended GTF formula parameters 8393ec0db81SDaniel Vetter * @GTF_2J: extended GTF formula parameters 84026bbdadaSZhao Yakui * 8417a374350SAdam Jackson * GTF feature blocks specify C and J in multiples of 0.5, so we pass them 8427a374350SAdam Jackson * in here multiplied by two. For a C of 40, pass in 80. 843f5aabb97SDaniel Vetter * 844f5aabb97SDaniel Vetter * Returns: 845f5aabb97SDaniel Vetter * The modeline based on the full GTF algorithm stored in a drm_display_mode object. 846f5aabb97SDaniel Vetter * The display mode object is allocated with drm_mode_create(). Returns NULL 847f5aabb97SDaniel Vetter * when no mode could be allocated. 84826bbdadaSZhao Yakui */ 8497a374350SAdam Jackson struct drm_display_mode * 8507a374350SAdam Jackson drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay, 8517a374350SAdam Jackson int vrefresh, bool interlaced, int margins, 8527a374350SAdam Jackson int GTF_M, int GTF_2C, int GTF_K, int GTF_2J) 8537a374350SAdam Jackson { /* 1) top/bottom margin size (% of height) - default: 1.8, */ 85426bbdadaSZhao Yakui #define GTF_MARGIN_PERCENTAGE 18 85526bbdadaSZhao Yakui /* 2) character cell horizontal granularity (pixels) - default 8 */ 85626bbdadaSZhao Yakui #define GTF_CELL_GRAN 8 85726bbdadaSZhao Yakui /* 3) Minimum vertical porch (lines) - default 3 */ 85826bbdadaSZhao Yakui #define GTF_MIN_V_PORCH 1 85926bbdadaSZhao Yakui /* width of vsync in lines */ 86026bbdadaSZhao Yakui #define V_SYNC_RQD 3 86126bbdadaSZhao Yakui /* width of hsync as % of total line */ 86226bbdadaSZhao Yakui #define H_SYNC_PERCENT 8 86326bbdadaSZhao Yakui /* min time of vsync + back porch (microsec) */ 86426bbdadaSZhao Yakui #define MIN_VSYNC_PLUS_BP 550 86526bbdadaSZhao Yakui /* C' and M' are part of the Blanking Duty Cycle computation */ 8667a374350SAdam Jackson #define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2) 86726bbdadaSZhao Yakui #define GTF_M_PRIME (GTF_K * GTF_M / 256) 86826bbdadaSZhao Yakui struct drm_display_mode *drm_mode; 86926bbdadaSZhao Yakui unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd; 87026bbdadaSZhao Yakui int top_margin, bottom_margin; 87126bbdadaSZhao Yakui int interlace; 87226bbdadaSZhao Yakui unsigned int hfreq_est; 873f199af00SBenjamin Gaignard int vsync_plus_bp, __maybe_unused vback_porch; 874f199af00SBenjamin Gaignard unsigned int vtotal_lines, __maybe_unused vfieldrate_est; 875f199af00SBenjamin Gaignard unsigned int __maybe_unused hperiod; 876f199af00SBenjamin Gaignard unsigned int vfield_rate, __maybe_unused vframe_rate; 87726bbdadaSZhao Yakui int left_margin, right_margin; 87826bbdadaSZhao Yakui unsigned int total_active_pixels, ideal_duty_cycle; 87926bbdadaSZhao Yakui unsigned int hblank, total_pixels, pixel_freq; 88026bbdadaSZhao Yakui int hsync, hfront_porch, vodd_front_porch_lines; 88126bbdadaSZhao Yakui unsigned int tmp1, tmp2; 88226bbdadaSZhao Yakui 8837f3bbc0bSDmitry Osipenko if (!hdisplay || !vdisplay) 8847f3bbc0bSDmitry Osipenko return NULL; 8857f3bbc0bSDmitry Osipenko 88626bbdadaSZhao Yakui drm_mode = drm_mode_create(dev); 88726bbdadaSZhao Yakui if (!drm_mode) 88826bbdadaSZhao Yakui return NULL; 88926bbdadaSZhao Yakui 89026bbdadaSZhao Yakui /* 1. In order to give correct results, the number of horizontal 89126bbdadaSZhao Yakui * pixels requested is first processed to ensure that it is divisible 89226bbdadaSZhao Yakui * by the character size, by rounding it to the nearest character 89326bbdadaSZhao Yakui * cell boundary: 89426bbdadaSZhao Yakui */ 89526bbdadaSZhao Yakui hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; 89626bbdadaSZhao Yakui hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN; 89726bbdadaSZhao Yakui 89826bbdadaSZhao Yakui /* 2. If interlace is requested, the number of vertical lines assumed 89926bbdadaSZhao Yakui * by the calculation must be halved, as the computation calculates 90026bbdadaSZhao Yakui * the number of vertical lines per field. 90126bbdadaSZhao Yakui */ 90226bbdadaSZhao Yakui if (interlaced) 90326bbdadaSZhao Yakui vdisplay_rnd = vdisplay / 2; 90426bbdadaSZhao Yakui else 90526bbdadaSZhao Yakui vdisplay_rnd = vdisplay; 90626bbdadaSZhao Yakui 90726bbdadaSZhao Yakui /* 3. Find the frame rate required: */ 90826bbdadaSZhao Yakui if (interlaced) 90926bbdadaSZhao Yakui vfieldrate_rqd = vrefresh * 2; 91026bbdadaSZhao Yakui else 91126bbdadaSZhao Yakui vfieldrate_rqd = vrefresh; 91226bbdadaSZhao Yakui 91326bbdadaSZhao Yakui /* 4. Find number of lines in Top margin: */ 91426bbdadaSZhao Yakui top_margin = 0; 91526bbdadaSZhao Yakui if (margins) 91626bbdadaSZhao Yakui top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / 91726bbdadaSZhao Yakui 1000; 91826bbdadaSZhao Yakui /* 5. Find number of lines in bottom margin: */ 91926bbdadaSZhao Yakui bottom_margin = top_margin; 92026bbdadaSZhao Yakui 92126bbdadaSZhao Yakui /* 6. If interlace is required, then set variable interlace: */ 92226bbdadaSZhao Yakui if (interlaced) 92326bbdadaSZhao Yakui interlace = 1; 92426bbdadaSZhao Yakui else 92526bbdadaSZhao Yakui interlace = 0; 92626bbdadaSZhao Yakui 92726bbdadaSZhao Yakui /* 7. Estimate the Horizontal frequency */ 92826bbdadaSZhao Yakui { 92926bbdadaSZhao Yakui tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; 93026bbdadaSZhao Yakui tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) * 93126bbdadaSZhao Yakui 2 + interlace; 93226bbdadaSZhao Yakui hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1; 93326bbdadaSZhao Yakui } 93426bbdadaSZhao Yakui 93526bbdadaSZhao Yakui /* 8. Find the number of lines in V sync + back porch */ 93626bbdadaSZhao Yakui /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */ 93726bbdadaSZhao Yakui vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000; 93826bbdadaSZhao Yakui vsync_plus_bp = (vsync_plus_bp + 500) / 1000; 93926bbdadaSZhao Yakui /* 9. Find the number of lines in V back porch alone: */ 94026bbdadaSZhao Yakui vback_porch = vsync_plus_bp - V_SYNC_RQD; 94126bbdadaSZhao Yakui /* 10. Find the total number of lines in Vertical field period: */ 94226bbdadaSZhao Yakui vtotal_lines = vdisplay_rnd + top_margin + bottom_margin + 94326bbdadaSZhao Yakui vsync_plus_bp + GTF_MIN_V_PORCH; 94426bbdadaSZhao Yakui /* 11. Estimate the Vertical field frequency: */ 94526bbdadaSZhao Yakui vfieldrate_est = hfreq_est / vtotal_lines; 94626bbdadaSZhao Yakui /* 12. Find the actual horizontal period: */ 94726bbdadaSZhao Yakui hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines); 94826bbdadaSZhao Yakui 94926bbdadaSZhao Yakui /* 13. Find the actual Vertical field frequency: */ 95026bbdadaSZhao Yakui vfield_rate = hfreq_est / vtotal_lines; 95126bbdadaSZhao Yakui /* 14. Find the Vertical frame frequency: */ 95226bbdadaSZhao Yakui if (interlaced) 95326bbdadaSZhao Yakui vframe_rate = vfield_rate / 2; 95426bbdadaSZhao Yakui else 95526bbdadaSZhao Yakui vframe_rate = vfield_rate; 95626bbdadaSZhao Yakui /* 15. Find number of pixels in left margin: */ 95726bbdadaSZhao Yakui if (margins) 95826bbdadaSZhao Yakui left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / 95926bbdadaSZhao Yakui 1000; 96026bbdadaSZhao Yakui else 96126bbdadaSZhao Yakui left_margin = 0; 96226bbdadaSZhao Yakui 96326bbdadaSZhao Yakui /* 16.Find number of pixels in right margin: */ 96426bbdadaSZhao Yakui right_margin = left_margin; 96526bbdadaSZhao Yakui /* 17.Find total number of active pixels in image and left and right */ 96626bbdadaSZhao Yakui total_active_pixels = hdisplay_rnd + left_margin + right_margin; 96726bbdadaSZhao Yakui /* 18.Find the ideal blanking duty cycle from blanking duty cycle */ 96826bbdadaSZhao Yakui ideal_duty_cycle = GTF_C_PRIME * 1000 - 96926bbdadaSZhao Yakui (GTF_M_PRIME * 1000000 / hfreq_est); 97026bbdadaSZhao Yakui /* 19.Find the number of pixels in the blanking time to the nearest 97126bbdadaSZhao Yakui * double character cell: */ 97226bbdadaSZhao Yakui hblank = total_active_pixels * ideal_duty_cycle / 97326bbdadaSZhao Yakui (100000 - ideal_duty_cycle); 97426bbdadaSZhao Yakui hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN); 97526bbdadaSZhao Yakui hblank = hblank * 2 * GTF_CELL_GRAN; 97626bbdadaSZhao Yakui /* 20.Find total number of pixels: */ 97726bbdadaSZhao Yakui total_pixels = total_active_pixels + hblank; 97826bbdadaSZhao Yakui /* 21.Find pixel clock frequency: */ 97926bbdadaSZhao Yakui pixel_freq = total_pixels * hfreq_est / 1000; 98026bbdadaSZhao Yakui /* Stage 1 computations are now complete; I should really pass 98126bbdadaSZhao Yakui * the results to another function and do the Stage 2 computations, 98226bbdadaSZhao Yakui * but I only need a few more values so I'll just append the 98326bbdadaSZhao Yakui * computations here for now */ 98426bbdadaSZhao Yakui /* 17. Find the number of pixels in the horizontal sync period: */ 98526bbdadaSZhao Yakui hsync = H_SYNC_PERCENT * total_pixels / 100; 98626bbdadaSZhao Yakui hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; 98726bbdadaSZhao Yakui hsync = hsync * GTF_CELL_GRAN; 98826bbdadaSZhao Yakui /* 18. Find the number of pixels in horizontal front porch period */ 98926bbdadaSZhao Yakui hfront_porch = hblank / 2 - hsync; 99026bbdadaSZhao Yakui /* 36. Find the number of lines in the odd front porch period: */ 99126bbdadaSZhao Yakui vodd_front_porch_lines = GTF_MIN_V_PORCH ; 99226bbdadaSZhao Yakui 99326bbdadaSZhao Yakui /* finally, pack the results in the mode struct */ 99426bbdadaSZhao Yakui drm_mode->hdisplay = hdisplay_rnd; 99526bbdadaSZhao Yakui drm_mode->hsync_start = hdisplay_rnd + hfront_porch; 99626bbdadaSZhao Yakui drm_mode->hsync_end = drm_mode->hsync_start + hsync; 99726bbdadaSZhao Yakui drm_mode->htotal = total_pixels; 99826bbdadaSZhao Yakui drm_mode->vdisplay = vdisplay_rnd; 99926bbdadaSZhao Yakui drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines; 100026bbdadaSZhao Yakui drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD; 100126bbdadaSZhao Yakui drm_mode->vtotal = vtotal_lines; 100226bbdadaSZhao Yakui 100326bbdadaSZhao Yakui drm_mode->clock = pixel_freq; 100426bbdadaSZhao Yakui 100526bbdadaSZhao Yakui if (interlaced) { 100626bbdadaSZhao Yakui drm_mode->vtotal *= 2; 100726bbdadaSZhao Yakui drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; 100826bbdadaSZhao Yakui } 100926bbdadaSZhao Yakui 1010171fdd89SAdam Jackson drm_mode_set_name(drm_mode); 1011c385e50cSAdam Jackson if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40) 1012171fdd89SAdam Jackson drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; 1013c385e50cSAdam Jackson else 1014c385e50cSAdam Jackson drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC; 1015171fdd89SAdam Jackson 101626bbdadaSZhao Yakui return drm_mode; 101726bbdadaSZhao Yakui } 10187a374350SAdam Jackson EXPORT_SYMBOL(drm_gtf_mode_complex); 10197a374350SAdam Jackson 10207a374350SAdam Jackson /** 1021f5aabb97SDaniel Vetter * drm_gtf_mode - create the modeline based on the GTF algorithm 10227a374350SAdam Jackson * @dev: drm device 10237a374350SAdam Jackson * @hdisplay: hdisplay size 10247a374350SAdam Jackson * @vdisplay: vdisplay size 10257a374350SAdam Jackson * @vrefresh: vrefresh rate. 1026f5aabb97SDaniel Vetter * @interlaced: whether to compute an interlaced mode 1027f5aabb97SDaniel Vetter * @margins: desired margin (borders) size 10287a374350SAdam Jackson * 10297a374350SAdam Jackson * return the modeline based on GTF algorithm 10307a374350SAdam Jackson * 10317a374350SAdam Jackson * This function is to create the modeline based on the GTF algorithm. 10327a374350SAdam Jackson * Generalized Timing Formula is derived from: 10332e7a5701SDaniel Vetter * 10347a374350SAdam Jackson * GTF Spreadsheet by Andy Morrish (1/5/97) 1035b0487e0dSAlexander A. Klimov * available at https://www.vesa.org 10367a374350SAdam Jackson * 10377a374350SAdam Jackson * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c. 10387a374350SAdam Jackson * What I have done is to translate it by using integer calculation. 10397a374350SAdam Jackson * I also refer to the function of fb_get_mode in the file of 10407a374350SAdam Jackson * drivers/video/fbmon.c 10417a374350SAdam Jackson * 1042da5335b8SDaniel Vetter * Standard GTF parameters:: 1043da5335b8SDaniel Vetter * 10447a374350SAdam Jackson * M = 600 10457a374350SAdam Jackson * C = 40 10467a374350SAdam Jackson * K = 128 10477a374350SAdam Jackson * J = 20 1048f5aabb97SDaniel Vetter * 1049f5aabb97SDaniel Vetter * Returns: 1050f5aabb97SDaniel Vetter * The modeline based on the GTF algorithm stored in a drm_display_mode object. 1051f5aabb97SDaniel Vetter * The display mode object is allocated with drm_mode_create(). Returns NULL 1052f5aabb97SDaniel Vetter * when no mode could be allocated. 10537a374350SAdam Jackson */ 10547a374350SAdam Jackson struct drm_display_mode * 10557a374350SAdam Jackson drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, 10563ec0db81SDaniel Vetter bool interlaced, int margins) 10577a374350SAdam Jackson { 10583ec0db81SDaniel Vetter return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, 10593ec0db81SDaniel Vetter interlaced, margins, 10603ec0db81SDaniel Vetter 600, 40 * 2, 128, 20 * 2); 10617a374350SAdam Jackson } 106226bbdadaSZhao Yakui EXPORT_SYMBOL(drm_gtf_mode); 10637a374350SAdam Jackson 1064a38884f6STomi Valkeinen #ifdef CONFIG_VIDEOMODE_HELPERS 1065f5aabb97SDaniel Vetter /** 1066f5aabb97SDaniel Vetter * drm_display_mode_from_videomode - fill in @dmode using @vm, 1067f5aabb97SDaniel Vetter * @vm: videomode structure to use as source 1068f5aabb97SDaniel Vetter * @dmode: drm_display_mode structure to use as destination 1069f5aabb97SDaniel Vetter * 1070f5aabb97SDaniel Vetter * Fills out @dmode using the display mode specified in @vm. 1071f5aabb97SDaniel Vetter */ 1072ba0c2422SDaniel Vetter void drm_display_mode_from_videomode(const struct videomode *vm, 1073ebc64e45SSteffen Trumtrar struct drm_display_mode *dmode) 1074ebc64e45SSteffen Trumtrar { 1075ebc64e45SSteffen Trumtrar dmode->hdisplay = vm->hactive; 1076ebc64e45SSteffen Trumtrar dmode->hsync_start = dmode->hdisplay + vm->hfront_porch; 1077ebc64e45SSteffen Trumtrar dmode->hsync_end = dmode->hsync_start + vm->hsync_len; 1078ebc64e45SSteffen Trumtrar dmode->htotal = dmode->hsync_end + vm->hback_porch; 1079ebc64e45SSteffen Trumtrar 1080ebc64e45SSteffen Trumtrar dmode->vdisplay = vm->vactive; 1081ebc64e45SSteffen Trumtrar dmode->vsync_start = dmode->vdisplay + vm->vfront_porch; 1082ebc64e45SSteffen Trumtrar dmode->vsync_end = dmode->vsync_start + vm->vsync_len; 1083ebc64e45SSteffen Trumtrar dmode->vtotal = dmode->vsync_end + vm->vback_porch; 1084ebc64e45SSteffen Trumtrar 1085ebc64e45SSteffen Trumtrar dmode->clock = vm->pixelclock / 1000; 1086ebc64e45SSteffen Trumtrar 1087ebc64e45SSteffen Trumtrar dmode->flags = 0; 108806a33079STomi Valkeinen if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) 1089ebc64e45SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_PHSYNC; 109006a33079STomi Valkeinen else if (vm->flags & DISPLAY_FLAGS_HSYNC_LOW) 1091ebc64e45SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_NHSYNC; 109206a33079STomi Valkeinen if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) 1093ebc64e45SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_PVSYNC; 109406a33079STomi Valkeinen else if (vm->flags & DISPLAY_FLAGS_VSYNC_LOW) 1095ebc64e45SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_NVSYNC; 109606a33079STomi Valkeinen if (vm->flags & DISPLAY_FLAGS_INTERLACED) 1097ebc64e45SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_INTERLACE; 109806a33079STomi Valkeinen if (vm->flags & DISPLAY_FLAGS_DOUBLESCAN) 1099ebc64e45SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_DBLSCAN; 1100328a4719SSteffen Trumtrar if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) 1101328a4719SSteffen Trumtrar dmode->flags |= DRM_MODE_FLAG_DBLCLK; 1102ebc64e45SSteffen Trumtrar drm_mode_set_name(dmode); 1103ebc64e45SSteffen Trumtrar } 1104ebc64e45SSteffen Trumtrar EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); 1105ebc64e45SSteffen Trumtrar 1106d490f455SSteve Longerbeam /** 1107d490f455SSteve Longerbeam * drm_display_mode_to_videomode - fill in @vm using @dmode, 1108d490f455SSteve Longerbeam * @dmode: drm_display_mode structure to use as source 1109d490f455SSteve Longerbeam * @vm: videomode structure to use as destination 1110d490f455SSteve Longerbeam * 1111d490f455SSteve Longerbeam * Fills out @vm using the display mode specified in @dmode. 1112d490f455SSteve Longerbeam */ 1113d490f455SSteve Longerbeam void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, 1114d490f455SSteve Longerbeam struct videomode *vm) 1115d490f455SSteve Longerbeam { 1116d490f455SSteve Longerbeam vm->hactive = dmode->hdisplay; 1117d490f455SSteve Longerbeam vm->hfront_porch = dmode->hsync_start - dmode->hdisplay; 1118d490f455SSteve Longerbeam vm->hsync_len = dmode->hsync_end - dmode->hsync_start; 1119d490f455SSteve Longerbeam vm->hback_porch = dmode->htotal - dmode->hsync_end; 1120d490f455SSteve Longerbeam 1121d490f455SSteve Longerbeam vm->vactive = dmode->vdisplay; 1122d490f455SSteve Longerbeam vm->vfront_porch = dmode->vsync_start - dmode->vdisplay; 1123d490f455SSteve Longerbeam vm->vsync_len = dmode->vsync_end - dmode->vsync_start; 1124d490f455SSteve Longerbeam vm->vback_porch = dmode->vtotal - dmode->vsync_end; 1125d490f455SSteve Longerbeam 1126d490f455SSteve Longerbeam vm->pixelclock = dmode->clock * 1000; 1127d490f455SSteve Longerbeam 1128d490f455SSteve Longerbeam vm->flags = 0; 1129d490f455SSteve Longerbeam if (dmode->flags & DRM_MODE_FLAG_PHSYNC) 1130d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH; 1131d490f455SSteve Longerbeam else if (dmode->flags & DRM_MODE_FLAG_NHSYNC) 1132d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_HSYNC_LOW; 1133d490f455SSteve Longerbeam if (dmode->flags & DRM_MODE_FLAG_PVSYNC) 1134d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH; 1135d490f455SSteve Longerbeam else if (dmode->flags & DRM_MODE_FLAG_NVSYNC) 1136d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_VSYNC_LOW; 1137d490f455SSteve Longerbeam if (dmode->flags & DRM_MODE_FLAG_INTERLACE) 1138d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_INTERLACED; 1139d490f455SSteve Longerbeam if (dmode->flags & DRM_MODE_FLAG_DBLSCAN) 1140d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_DOUBLESCAN; 1141d490f455SSteve Longerbeam if (dmode->flags & DRM_MODE_FLAG_DBLCLK) 1142d490f455SSteve Longerbeam vm->flags |= DISPLAY_FLAGS_DOUBLECLK; 1143d490f455SSteve Longerbeam } 1144d490f455SSteve Longerbeam EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); 1145d490f455SSteve Longerbeam 1146cb34d7f2SLothar Waßmann /** 1147cb34d7f2SLothar Waßmann * drm_bus_flags_from_videomode - extract information about pixelclk and 1148cb34d7f2SLothar Waßmann * DE polarity from videomode and store it in a separate variable 1149cb34d7f2SLothar Waßmann * @vm: videomode structure to use 1150955f60dbSPeter Ujfalusi * @bus_flags: information about pixelclk, sync and DE polarity will be stored 1151955f60dbSPeter Ujfalusi * here 1152cb34d7f2SLothar Waßmann * 115388bc4178SLaurent Pinchart * Sets DRM_BUS_FLAG_DE_(LOW|HIGH), DRM_BUS_FLAG_PIXDATA_DRIVE_(POS|NEG)EDGE 115488bc4178SLaurent Pinchart * and DISPLAY_FLAGS_SYNC_(POS|NEG)EDGE in @bus_flags according to DISPLAY_FLAGS 1155955f60dbSPeter Ujfalusi * found in @vm 1156cb34d7f2SLothar Waßmann */ 1157d72daa0dSLothar Waßmann void drm_bus_flags_from_videomode(const struct videomode *vm, u32 *bus_flags) 1158d72daa0dSLothar Waßmann { 1159d72daa0dSLothar Waßmann *bus_flags = 0; 1160d72daa0dSLothar Waßmann if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) 116188bc4178SLaurent Pinchart *bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE; 1162d72daa0dSLothar Waßmann if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) 116388bc4178SLaurent Pinchart *bus_flags |= DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE; 1164d72daa0dSLothar Waßmann 1165955f60dbSPeter Ujfalusi if (vm->flags & DISPLAY_FLAGS_SYNC_POSEDGE) 116688bc4178SLaurent Pinchart *bus_flags |= DRM_BUS_FLAG_SYNC_DRIVE_POSEDGE; 1167955f60dbSPeter Ujfalusi if (vm->flags & DISPLAY_FLAGS_SYNC_NEGEDGE) 116888bc4178SLaurent Pinchart *bus_flags |= DRM_BUS_FLAG_SYNC_DRIVE_NEGEDGE; 1169955f60dbSPeter Ujfalusi 1170d72daa0dSLothar Waßmann if (vm->flags & DISPLAY_FLAGS_DE_LOW) 1171d72daa0dSLothar Waßmann *bus_flags |= DRM_BUS_FLAG_DE_LOW; 1172d72daa0dSLothar Waßmann if (vm->flags & DISPLAY_FLAGS_DE_HIGH) 1173d72daa0dSLothar Waßmann *bus_flags |= DRM_BUS_FLAG_DE_HIGH; 1174d72daa0dSLothar Waßmann } 1175d72daa0dSLothar Waßmann EXPORT_SYMBOL_GPL(drm_bus_flags_from_videomode); 1176d72daa0dSLothar Waßmann 1177a38884f6STomi Valkeinen #ifdef CONFIG_OF 1178edb37a95SSteffen Trumtrar /** 1179edb37a95SSteffen Trumtrar * of_get_drm_display_mode - get a drm_display_mode from devicetree 1180edb37a95SSteffen Trumtrar * @np: device_node with the timing specification 1181edb37a95SSteffen Trumtrar * @dmode: will be set to the return value 1182955f60dbSPeter Ujfalusi * @bus_flags: information about pixelclk, sync and DE polarity 1183edb37a95SSteffen Trumtrar * @index: index into the list of display timings in devicetree 1184edb37a95SSteffen Trumtrar * 1185edb37a95SSteffen Trumtrar * This function is expensive and should only be used, if only one mode is to be 1186edb37a95SSteffen Trumtrar * read from DT. To get multiple modes start with of_get_display_timings and 1187edb37a95SSteffen Trumtrar * work with that instead. 1188f5aabb97SDaniel Vetter * 1189f5aabb97SDaniel Vetter * Returns: 1190f5aabb97SDaniel Vetter * 0 on success, a negative errno code when no of videomode node was found. 1191edb37a95SSteffen Trumtrar */ 1192edb37a95SSteffen Trumtrar int of_get_drm_display_mode(struct device_node *np, 1193fafc79efSLothar Waßmann struct drm_display_mode *dmode, u32 *bus_flags, 1194fafc79efSLothar Waßmann int index) 1195edb37a95SSteffen Trumtrar { 1196edb37a95SSteffen Trumtrar struct videomode vm; 1197edb37a95SSteffen Trumtrar int ret; 1198edb37a95SSteffen Trumtrar 1199edb37a95SSteffen Trumtrar ret = of_get_videomode(np, &vm, index); 1200edb37a95SSteffen Trumtrar if (ret) 1201edb37a95SSteffen Trumtrar return ret; 1202edb37a95SSteffen Trumtrar 1203edb37a95SSteffen Trumtrar drm_display_mode_from_videomode(&vm, dmode); 1204fafc79efSLothar Waßmann if (bus_flags) 1205fafc79efSLothar Waßmann drm_bus_flags_from_videomode(&vm, bus_flags); 1206edb37a95SSteffen Trumtrar 120796a91515SJani Nikula pr_debug("%pOF: got %dx%d display mode: " DRM_MODE_FMT "\n", 120896a91515SJani Nikula np, vm.hactive, vm.vactive, DRM_MODE_ARG(dmode)); 1209edb37a95SSteffen Trumtrar 1210edb37a95SSteffen Trumtrar return 0; 1211edb37a95SSteffen Trumtrar } 1212edb37a95SSteffen Trumtrar EXPORT_SYMBOL_GPL(of_get_drm_display_mode); 121395ae342dSNoralf Trønnes 121495ae342dSNoralf Trønnes /** 121595ae342dSNoralf Trønnes * of_get_drm_panel_display_mode - get a panel-timing drm_display_mode from devicetree 121695ae342dSNoralf Trønnes * @np: device_node with the panel-timing specification 121795ae342dSNoralf Trønnes * @dmode: will be set to the return value 121895ae342dSNoralf Trønnes * @bus_flags: information about pixelclk, sync and DE polarity 121995ae342dSNoralf Trønnes * 1220f470cfe4SMarek Vasut * The mandatory Device Tree properties width-mm and height-mm 1221f470cfe4SMarek Vasut * are read and set on the display mode. 122295ae342dSNoralf Trønnes * 122395ae342dSNoralf Trønnes * Returns: 122495ae342dSNoralf Trønnes * Zero on success, negative error code on failure. 122595ae342dSNoralf Trønnes */ 122695ae342dSNoralf Trønnes int of_get_drm_panel_display_mode(struct device_node *np, 122795ae342dSNoralf Trønnes struct drm_display_mode *dmode, u32 *bus_flags) 122895ae342dSNoralf Trønnes { 122995ae342dSNoralf Trønnes u32 width_mm = 0, height_mm = 0; 123095ae342dSNoralf Trønnes struct display_timing timing; 123195ae342dSNoralf Trønnes struct videomode vm; 123295ae342dSNoralf Trønnes int ret; 123395ae342dSNoralf Trønnes 123495ae342dSNoralf Trønnes ret = of_get_display_timing(np, "panel-timing", &timing); 123595ae342dSNoralf Trønnes if (ret) 123695ae342dSNoralf Trønnes return ret; 123795ae342dSNoralf Trønnes 123895ae342dSNoralf Trønnes videomode_from_timing(&timing, &vm); 123995ae342dSNoralf Trønnes 124095ae342dSNoralf Trønnes memset(dmode, 0, sizeof(*dmode)); 124195ae342dSNoralf Trønnes drm_display_mode_from_videomode(&vm, dmode); 124295ae342dSNoralf Trønnes if (bus_flags) 124395ae342dSNoralf Trønnes drm_bus_flags_from_videomode(&vm, bus_flags); 124495ae342dSNoralf Trønnes 124595ae342dSNoralf Trønnes ret = of_property_read_u32(np, "width-mm", &width_mm); 1246f470cfe4SMarek Vasut if (ret) 124795ae342dSNoralf Trønnes return ret; 124895ae342dSNoralf Trønnes 124995ae342dSNoralf Trønnes ret = of_property_read_u32(np, "height-mm", &height_mm); 1250f470cfe4SMarek Vasut if (ret) 125195ae342dSNoralf Trønnes return ret; 125295ae342dSNoralf Trønnes 125395ae342dSNoralf Trønnes dmode->width_mm = width_mm; 125495ae342dSNoralf Trønnes dmode->height_mm = height_mm; 125595ae342dSNoralf Trønnes 125696a91515SJani Nikula pr_debug(DRM_MODE_FMT "\n", DRM_MODE_ARG(dmode)); 125795ae342dSNoralf Trønnes 125895ae342dSNoralf Trønnes return 0; 125995ae342dSNoralf Trønnes } 126095ae342dSNoralf Trønnes EXPORT_SYMBOL_GPL(of_get_drm_panel_display_mode); 1261a38884f6STomi Valkeinen #endif /* CONFIG_OF */ 1262a38884f6STomi Valkeinen #endif /* CONFIG_VIDEOMODE_HELPERS */ 1263edb37a95SSteffen Trumtrar 126426bbdadaSZhao Yakui /** 1265f453ba04SDave Airlie * drm_mode_set_name - set the name on a mode 1266f453ba04SDave Airlie * @mode: name will be set in this mode 1267f453ba04SDave Airlie * 1268f5aabb97SDaniel Vetter * Set the name of @mode to a standard format which is <hdisplay>x<vdisplay> 1269f5aabb97SDaniel Vetter * with an optional 'i' suffix for interlaced modes. 1270f453ba04SDave Airlie */ 1271f453ba04SDave Airlie void drm_mode_set_name(struct drm_display_mode *mode) 1272f453ba04SDave Airlie { 1273171fdd89SAdam Jackson bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); 1274171fdd89SAdam Jackson 1275171fdd89SAdam Jackson snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s", 1276171fdd89SAdam Jackson mode->hdisplay, mode->vdisplay, 1277171fdd89SAdam Jackson interlaced ? "i" : ""); 1278f453ba04SDave Airlie } 1279f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_set_name); 1280f453ba04SDave Airlie 128130ecad77SDaniel Vetter /** 1282f453ba04SDave Airlie * drm_mode_vrefresh - get the vrefresh of a mode 1283f453ba04SDave Airlie * @mode: mode 1284f453ba04SDave Airlie * 1285f5aabb97SDaniel Vetter * Returns: 1286f5aabb97SDaniel Vetter * @modes's vrefresh rate in Hz, rounded to the nearest integer. Calculates the 1287f5aabb97SDaniel Vetter * value first if it is not yet set. 1288f453ba04SDave Airlie */ 1289b1f559ecSChris Wilson int drm_mode_vrefresh(const struct drm_display_mode *mode) 1290f453ba04SDave Airlie { 12912f0e9d80SVille Syrjälä unsigned int num, den; 12922f0e9d80SVille Syrjälä 12934ed2101cSVille Syrjälä if (mode->htotal == 0 || mode->vtotal == 0) 12944ed2101cSVille Syrjälä return 0; 12954ed2101cSVille Syrjälä 12965b34ab52SVille Syrjälä num = mode->clock; 12972f0e9d80SVille Syrjälä den = mode->htotal * mode->vtotal; 1298f453ba04SDave Airlie 1299f453ba04SDave Airlie if (mode->flags & DRM_MODE_FLAG_INTERLACE) 13002f0e9d80SVille Syrjälä num *= 2; 1301f453ba04SDave Airlie if (mode->flags & DRM_MODE_FLAG_DBLSCAN) 13022f0e9d80SVille Syrjälä den *= 2; 1303f453ba04SDave Airlie if (mode->vscan > 1) 13042f0e9d80SVille Syrjälä den *= mode->vscan; 13052f0e9d80SVille Syrjälä 13065b34ab52SVille Syrjälä return DIV_ROUND_CLOSEST_ULL(mul_u32_u32(num, 1000), den); 1307f453ba04SDave Airlie } 1308f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_vrefresh); 1309f453ba04SDave Airlie 1310f453ba04SDave Airlie /** 1311196cd5d3SDaniel Vetter * drm_mode_get_hv_timing - Fetches hdisplay/vdisplay for given mode 1312196cd5d3SDaniel Vetter * @mode: mode to query 1313196cd5d3SDaniel Vetter * @hdisplay: hdisplay value to fill in 1314196cd5d3SDaniel Vetter * @vdisplay: vdisplay value to fill in 1315196cd5d3SDaniel Vetter * 1316196cd5d3SDaniel Vetter * The vdisplay value will be doubled if the specified mode is a stereo mode of 1317196cd5d3SDaniel Vetter * the appropriate layout. 1318196cd5d3SDaniel Vetter */ 1319196cd5d3SDaniel Vetter void drm_mode_get_hv_timing(const struct drm_display_mode *mode, 1320196cd5d3SDaniel Vetter int *hdisplay, int *vdisplay) 1321196cd5d3SDaniel Vetter { 1322563c4a75SVille Syrjälä struct drm_display_mode adjusted; 1323563c4a75SVille Syrjälä 1324563c4a75SVille Syrjälä drm_mode_init(&adjusted, mode); 1325196cd5d3SDaniel Vetter 1326196cd5d3SDaniel Vetter drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY); 1327196cd5d3SDaniel Vetter *hdisplay = adjusted.crtc_hdisplay; 1328196cd5d3SDaniel Vetter *vdisplay = adjusted.crtc_vdisplay; 1329196cd5d3SDaniel Vetter } 1330196cd5d3SDaniel Vetter EXPORT_SYMBOL(drm_mode_get_hv_timing); 1331196cd5d3SDaniel Vetter 1332196cd5d3SDaniel Vetter /** 1333f5aabb97SDaniel Vetter * drm_mode_set_crtcinfo - set CRTC modesetting timing parameters 1334f453ba04SDave Airlie * @p: mode 1335448cce25SDamien Lespiau * @adjust_flags: a combination of adjustment flags 1336f453ba04SDave Airlie * 1337f5aabb97SDaniel Vetter * Setup the CRTC modesetting timing parameters for @p, adjusting if necessary. 1338448cce25SDamien Lespiau * 1339448cce25SDamien Lespiau * - The CRTC_INTERLACE_HALVE_V flag can be used to halve vertical timings of 1340448cce25SDamien Lespiau * interlaced modes. 1341448cce25SDamien Lespiau * - The CRTC_STEREO_DOUBLE flag can be used to compute the timings for 1342448cce25SDamien Lespiau * buffers containing two eyes (only adjust the timings when needed, eg. for 1343448cce25SDamien Lespiau * "frame packing" or "side by side full"). 1344ecb7e16bSGustavo Padovan * - The CRTC_NO_DBLSCAN and CRTC_NO_VSCAN flags request that adjustment *not* 1345ecb7e16bSGustavo Padovan * be performed for doublescan and vscan > 1 modes respectively. 1346f453ba04SDave Airlie */ 1347f453ba04SDave Airlie void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) 1348f453ba04SDave Airlie { 13494f09c77bSVille Syrjälä if (!p) 1350f453ba04SDave Airlie return; 1351f453ba04SDave Airlie 1352bde2dcf7SDamien Lespiau p->crtc_clock = p->clock; 1353f453ba04SDave Airlie p->crtc_hdisplay = p->hdisplay; 1354f453ba04SDave Airlie p->crtc_hsync_start = p->hsync_start; 1355f453ba04SDave Airlie p->crtc_hsync_end = p->hsync_end; 1356f453ba04SDave Airlie p->crtc_htotal = p->htotal; 1357f453ba04SDave Airlie p->crtc_hskew = p->hskew; 1358f453ba04SDave Airlie p->crtc_vdisplay = p->vdisplay; 1359f453ba04SDave Airlie p->crtc_vsync_start = p->vsync_start; 1360f453ba04SDave Airlie p->crtc_vsync_end = p->vsync_end; 1361f453ba04SDave Airlie p->crtc_vtotal = p->vtotal; 1362f453ba04SDave Airlie 1363f453ba04SDave Airlie if (p->flags & DRM_MODE_FLAG_INTERLACE) { 1364f453ba04SDave Airlie if (adjust_flags & CRTC_INTERLACE_HALVE_V) { 1365f453ba04SDave Airlie p->crtc_vdisplay /= 2; 1366f453ba04SDave Airlie p->crtc_vsync_start /= 2; 1367f453ba04SDave Airlie p->crtc_vsync_end /= 2; 1368f453ba04SDave Airlie p->crtc_vtotal /= 2; 1369f453ba04SDave Airlie } 1370f453ba04SDave Airlie } 1371f453ba04SDave Airlie 1372ecb7e16bSGustavo Padovan if (!(adjust_flags & CRTC_NO_DBLSCAN)) { 1373f453ba04SDave Airlie if (p->flags & DRM_MODE_FLAG_DBLSCAN) { 1374f453ba04SDave Airlie p->crtc_vdisplay *= 2; 1375f453ba04SDave Airlie p->crtc_vsync_start *= 2; 1376f453ba04SDave Airlie p->crtc_vsync_end *= 2; 1377f453ba04SDave Airlie p->crtc_vtotal *= 2; 1378f453ba04SDave Airlie } 1379ecb7e16bSGustavo Padovan } 1380f453ba04SDave Airlie 1381ecb7e16bSGustavo Padovan if (!(adjust_flags & CRTC_NO_VSCAN)) { 1382f453ba04SDave Airlie if (p->vscan > 1) { 1383f453ba04SDave Airlie p->crtc_vdisplay *= p->vscan; 1384f453ba04SDave Airlie p->crtc_vsync_start *= p->vscan; 1385f453ba04SDave Airlie p->crtc_vsync_end *= p->vscan; 1386f453ba04SDave Airlie p->crtc_vtotal *= p->vscan; 1387f453ba04SDave Airlie } 1388ecb7e16bSGustavo Padovan } 1389f453ba04SDave Airlie 1390448cce25SDamien Lespiau if (adjust_flags & CRTC_STEREO_DOUBLE) { 1391448cce25SDamien Lespiau unsigned int layout = p->flags & DRM_MODE_FLAG_3D_MASK; 1392448cce25SDamien Lespiau 1393448cce25SDamien Lespiau switch (layout) { 1394448cce25SDamien Lespiau case DRM_MODE_FLAG_3D_FRAME_PACKING: 1395448cce25SDamien Lespiau p->crtc_clock *= 2; 1396448cce25SDamien Lespiau p->crtc_vdisplay += p->crtc_vtotal; 1397448cce25SDamien Lespiau p->crtc_vsync_start += p->crtc_vtotal; 1398448cce25SDamien Lespiau p->crtc_vsync_end += p->crtc_vtotal; 1399448cce25SDamien Lespiau p->crtc_vtotal += p->crtc_vtotal; 1400448cce25SDamien Lespiau break; 1401448cce25SDamien Lespiau } 1402448cce25SDamien Lespiau } 1403448cce25SDamien Lespiau 1404f453ba04SDave Airlie p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay); 1405f453ba04SDave Airlie p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal); 1406f453ba04SDave Airlie p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay); 1407f453ba04SDave Airlie p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal); 1408f453ba04SDave Airlie } 1409f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_set_crtcinfo); 1410f453ba04SDave Airlie 1411f453ba04SDave Airlie /** 1412c3c50e8bSVille Syrjälä * drm_mode_copy - copy the mode 1413c3c50e8bSVille Syrjälä * @dst: mode to overwrite 1414c3c50e8bSVille Syrjälä * @src: mode to copy 1415c3c50e8bSVille Syrjälä * 1416b3d9f59fSVille Syrjälä * Copy an existing mode into another mode, preserving the 141772e45e92SVille Syrjälä * list head of the destination mode. 1418c3c50e8bSVille Syrjälä */ 1419c3c50e8bSVille Syrjälä void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) 1420c3c50e8bSVille Syrjälä { 142172e45e92SVille Syrjälä struct list_head head = dst->head; 1422c3c50e8bSVille Syrjälä 1423c3c50e8bSVille Syrjälä *dst = *src; 142472e45e92SVille Syrjälä dst->head = head; 1425c3c50e8bSVille Syrjälä } 1426c3c50e8bSVille Syrjälä EXPORT_SYMBOL(drm_mode_copy); 1427c3c50e8bSVille Syrjälä 1428c3c50e8bSVille Syrjälä /** 14292d3eec89SVille Syrjälä * drm_mode_init - initialize the mode from another mode 14302d3eec89SVille Syrjälä * @dst: mode to overwrite 14312d3eec89SVille Syrjälä * @src: mode to copy 14322d3eec89SVille Syrjälä * 14332d3eec89SVille Syrjälä * Copy an existing mode into another mode, zeroing the 14342d3eec89SVille Syrjälä * list head of the destination mode. Typically used 14352d3eec89SVille Syrjälä * to guarantee the list head is not left with stack 14362d3eec89SVille Syrjälä * garbage in on-stack modes. 14372d3eec89SVille Syrjälä */ 14382d3eec89SVille Syrjälä void drm_mode_init(struct drm_display_mode *dst, const struct drm_display_mode *src) 14392d3eec89SVille Syrjälä { 14402d3eec89SVille Syrjälä memset(dst, 0, sizeof(*dst)); 14412d3eec89SVille Syrjälä drm_mode_copy(dst, src); 14422d3eec89SVille Syrjälä } 14432d3eec89SVille Syrjälä EXPORT_SYMBOL(drm_mode_init); 14442d3eec89SVille Syrjälä 14452d3eec89SVille Syrjälä /** 1446f453ba04SDave Airlie * drm_mode_duplicate - allocate and duplicate an existing mode 14473ec0db81SDaniel Vetter * @dev: drm_device to allocate the duplicated mode for 14483ec0db81SDaniel Vetter * @mode: mode to duplicate 1449f453ba04SDave Airlie * 1450f453ba04SDave Airlie * Just allocate a new mode, copy the existing mode into it, and return 1451f453ba04SDave Airlie * a pointer to it. Used to create new instances of established modes. 1452f5aabb97SDaniel Vetter * 1453f5aabb97SDaniel Vetter * Returns: 1454f5aabb97SDaniel Vetter * Pointer to duplicated mode on success, NULL on error. 1455f453ba04SDave Airlie */ 1456f453ba04SDave Airlie struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, 1457b1f559ecSChris Wilson const struct drm_display_mode *mode) 1458f453ba04SDave Airlie { 1459f453ba04SDave Airlie struct drm_display_mode *nmode; 1460f453ba04SDave Airlie 1461f453ba04SDave Airlie nmode = drm_mode_create(dev); 1462f453ba04SDave Airlie if (!nmode) 1463f453ba04SDave Airlie return NULL; 1464f453ba04SDave Airlie 1465c3c50e8bSVille Syrjälä drm_mode_copy(nmode, mode); 1466c3c50e8bSVille Syrjälä 1467f453ba04SDave Airlie return nmode; 1468f453ba04SDave Airlie } 1469f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_duplicate); 1470f453ba04SDave Airlie 1471dd7c2626SVille Syrjälä static bool drm_mode_match_timings(const struct drm_display_mode *mode1, 1472dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 1473dd7c2626SVille Syrjälä { 1474dd7c2626SVille Syrjälä return mode1->hdisplay == mode2->hdisplay && 1475dd7c2626SVille Syrjälä mode1->hsync_start == mode2->hsync_start && 1476dd7c2626SVille Syrjälä mode1->hsync_end == mode2->hsync_end && 1477dd7c2626SVille Syrjälä mode1->htotal == mode2->htotal && 1478dd7c2626SVille Syrjälä mode1->hskew == mode2->hskew && 1479dd7c2626SVille Syrjälä mode1->vdisplay == mode2->vdisplay && 1480dd7c2626SVille Syrjälä mode1->vsync_start == mode2->vsync_start && 1481dd7c2626SVille Syrjälä mode1->vsync_end == mode2->vsync_end && 1482dd7c2626SVille Syrjälä mode1->vtotal == mode2->vtotal && 1483dd7c2626SVille Syrjälä mode1->vscan == mode2->vscan; 1484dd7c2626SVille Syrjälä } 1485dd7c2626SVille Syrjälä 1486dd7c2626SVille Syrjälä static bool drm_mode_match_clock(const struct drm_display_mode *mode1, 1487dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 1488dd7c2626SVille Syrjälä { 1489dd7c2626SVille Syrjälä /* 1490dd7c2626SVille Syrjälä * do clock check convert to PICOS 1491dd7c2626SVille Syrjälä * so fb modes get matched the same 1492dd7c2626SVille Syrjälä */ 1493dd7c2626SVille Syrjälä if (mode1->clock && mode2->clock) 1494dd7c2626SVille Syrjälä return KHZ2PICOS(mode1->clock) == KHZ2PICOS(mode2->clock); 1495dd7c2626SVille Syrjälä else 1496dd7c2626SVille Syrjälä return mode1->clock == mode2->clock; 1497dd7c2626SVille Syrjälä } 1498dd7c2626SVille Syrjälä 1499dd7c2626SVille Syrjälä static bool drm_mode_match_flags(const struct drm_display_mode *mode1, 1500dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 1501dd7c2626SVille Syrjälä { 1502dd7c2626SVille Syrjälä return (mode1->flags & ~DRM_MODE_FLAG_3D_MASK) == 1503dd7c2626SVille Syrjälä (mode2->flags & ~DRM_MODE_FLAG_3D_MASK); 1504dd7c2626SVille Syrjälä } 1505dd7c2626SVille Syrjälä 1506dd7c2626SVille Syrjälä static bool drm_mode_match_3d_flags(const struct drm_display_mode *mode1, 1507dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 1508dd7c2626SVille Syrjälä { 1509dd7c2626SVille Syrjälä return (mode1->flags & DRM_MODE_FLAG_3D_MASK) == 1510dd7c2626SVille Syrjälä (mode2->flags & DRM_MODE_FLAG_3D_MASK); 1511dd7c2626SVille Syrjälä } 1512dd7c2626SVille Syrjälä 1513dd7c2626SVille Syrjälä static bool drm_mode_match_aspect_ratio(const struct drm_display_mode *mode1, 1514dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 1515dd7c2626SVille Syrjälä { 1516dd7c2626SVille Syrjälä return mode1->picture_aspect_ratio == mode2->picture_aspect_ratio; 1517dd7c2626SVille Syrjälä } 1518dd7c2626SVille Syrjälä 1519dd7c2626SVille Syrjälä /** 1520dd7c2626SVille Syrjälä * drm_mode_match - test modes for (partial) equality 1521dd7c2626SVille Syrjälä * @mode1: first mode 1522dd7c2626SVille Syrjälä * @mode2: second mode 1523dd7c2626SVille Syrjälä * @match_flags: which parts need to match (DRM_MODE_MATCH_*) 1524dd7c2626SVille Syrjälä * 1525dd7c2626SVille Syrjälä * Check to see if @mode1 and @mode2 are equivalent. 1526dd7c2626SVille Syrjälä * 1527dd7c2626SVille Syrjälä * Returns: 1528dd7c2626SVille Syrjälä * True if the modes are (partially) equal, false otherwise. 1529dd7c2626SVille Syrjälä */ 1530dd7c2626SVille Syrjälä bool drm_mode_match(const struct drm_display_mode *mode1, 1531dd7c2626SVille Syrjälä const struct drm_display_mode *mode2, 1532dd7c2626SVille Syrjälä unsigned int match_flags) 1533dd7c2626SVille Syrjälä { 1534dd7c2626SVille Syrjälä if (!mode1 && !mode2) 1535dd7c2626SVille Syrjälä return true; 1536dd7c2626SVille Syrjälä 1537dd7c2626SVille Syrjälä if (!mode1 || !mode2) 1538dd7c2626SVille Syrjälä return false; 1539dd7c2626SVille Syrjälä 1540dd7c2626SVille Syrjälä if (match_flags & DRM_MODE_MATCH_TIMINGS && 1541dd7c2626SVille Syrjälä !drm_mode_match_timings(mode1, mode2)) 1542dd7c2626SVille Syrjälä return false; 1543dd7c2626SVille Syrjälä 1544dd7c2626SVille Syrjälä if (match_flags & DRM_MODE_MATCH_CLOCK && 1545dd7c2626SVille Syrjälä !drm_mode_match_clock(mode1, mode2)) 1546dd7c2626SVille Syrjälä return false; 1547dd7c2626SVille Syrjälä 1548dd7c2626SVille Syrjälä if (match_flags & DRM_MODE_MATCH_FLAGS && 1549dd7c2626SVille Syrjälä !drm_mode_match_flags(mode1, mode2)) 1550dd7c2626SVille Syrjälä return false; 1551dd7c2626SVille Syrjälä 1552dd7c2626SVille Syrjälä if (match_flags & DRM_MODE_MATCH_3D_FLAGS && 1553dd7c2626SVille Syrjälä !drm_mode_match_3d_flags(mode1, mode2)) 1554dd7c2626SVille Syrjälä return false; 1555dd7c2626SVille Syrjälä 1556dd7c2626SVille Syrjälä if (match_flags & DRM_MODE_MATCH_ASPECT_RATIO && 1557dd7c2626SVille Syrjälä !drm_mode_match_aspect_ratio(mode1, mode2)) 1558dd7c2626SVille Syrjälä return false; 1559dd7c2626SVille Syrjälä 1560dd7c2626SVille Syrjälä return true; 1561dd7c2626SVille Syrjälä } 1562dd7c2626SVille Syrjälä EXPORT_SYMBOL(drm_mode_match); 1563dd7c2626SVille Syrjälä 1564f453ba04SDave Airlie /** 1565f453ba04SDave Airlie * drm_mode_equal - test modes for equality 1566f453ba04SDave Airlie * @mode1: first mode 1567f453ba04SDave Airlie * @mode2: second mode 1568f453ba04SDave Airlie * 1569f453ba04SDave Airlie * Check to see if @mode1 and @mode2 are equivalent. 1570f453ba04SDave Airlie * 1571f5aabb97SDaniel Vetter * Returns: 1572f453ba04SDave Airlie * True if the modes are equal, false otherwise. 1573f453ba04SDave Airlie */ 1574dd7c2626SVille Syrjälä bool drm_mode_equal(const struct drm_display_mode *mode1, 1575dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 1576f453ba04SDave Airlie { 1577dd7c2626SVille Syrjälä return drm_mode_match(mode1, mode2, 1578dd7c2626SVille Syrjälä DRM_MODE_MATCH_TIMINGS | 1579dd7c2626SVille Syrjälä DRM_MODE_MATCH_CLOCK | 1580dd7c2626SVille Syrjälä DRM_MODE_MATCH_FLAGS | 1581222ec161SShashank Sharma DRM_MODE_MATCH_3D_FLAGS| 1582222ec161SShashank Sharma DRM_MODE_MATCH_ASPECT_RATIO); 15834c6bcf44SVille Syrjälä } 15844c6bcf44SVille Syrjälä EXPORT_SYMBOL(drm_mode_equal); 15854c6bcf44SVille Syrjälä 15864c6bcf44SVille Syrjälä /** 15874c6bcf44SVille Syrjälä * drm_mode_equal_no_clocks - test modes for equality 15884c6bcf44SVille Syrjälä * @mode1: first mode 15894c6bcf44SVille Syrjälä * @mode2: second mode 15904c6bcf44SVille Syrjälä * 15914c6bcf44SVille Syrjälä * Check to see if @mode1 and @mode2 are equivalent, but 15924c6bcf44SVille Syrjälä * don't check the pixel clocks. 15934c6bcf44SVille Syrjälä * 15944c6bcf44SVille Syrjälä * Returns: 15954c6bcf44SVille Syrjälä * True if the modes are equal, false otherwise. 15964c6bcf44SVille Syrjälä */ 1597dd7c2626SVille Syrjälä bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, 1598dd7c2626SVille Syrjälä const struct drm_display_mode *mode2) 15994c6bcf44SVille Syrjälä { 1600dd7c2626SVille Syrjälä return drm_mode_match(mode1, mode2, 1601dd7c2626SVille Syrjälä DRM_MODE_MATCH_TIMINGS | 1602dd7c2626SVille Syrjälä DRM_MODE_MATCH_FLAGS | 1603dd7c2626SVille Syrjälä DRM_MODE_MATCH_3D_FLAGS); 16048cc3f23cSVille Syrjälä } 16054c6bcf44SVille Syrjälä EXPORT_SYMBOL(drm_mode_equal_no_clocks); 16068cc3f23cSVille Syrjälä 16078cc3f23cSVille Syrjälä /** 1608f2ecf2e3SDamien Lespiau * drm_mode_equal_no_clocks_no_stereo - test modes for equality 16098cc3f23cSVille Syrjälä * @mode1: first mode 16108cc3f23cSVille Syrjälä * @mode2: second mode 16118cc3f23cSVille Syrjälä * 16128cc3f23cSVille Syrjälä * Check to see if @mode1 and @mode2 are equivalent, but 1613f2ecf2e3SDamien Lespiau * don't check the pixel clocks nor the stereo layout. 16148cc3f23cSVille Syrjälä * 1615f5aabb97SDaniel Vetter * Returns: 16168cc3f23cSVille Syrjälä * True if the modes are equal, false otherwise. 16178cc3f23cSVille Syrjälä */ 1618f2ecf2e3SDamien Lespiau bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, 1619f2ecf2e3SDamien Lespiau const struct drm_display_mode *mode2) 16208cc3f23cSVille Syrjälä { 1621dd7c2626SVille Syrjälä return drm_mode_match(mode1, mode2, 1622dd7c2626SVille Syrjälä DRM_MODE_MATCH_TIMINGS | 1623dd7c2626SVille Syrjälä DRM_MODE_MATCH_FLAGS); 1624f453ba04SDave Airlie } 1625f2ecf2e3SDamien Lespiau EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo); 1626f453ba04SDave Airlie 162775a655e0SVille Syrjälä static enum drm_mode_status 1628abc0b144SVille Syrjälä drm_mode_validate_basic(const struct drm_display_mode *mode) 1629abc0b144SVille Syrjälä { 1630c6ed6dadSVille Syrjälä if (mode->type & ~DRM_MODE_TYPE_ALL) 1631c6ed6dadSVille Syrjälä return MODE_BAD; 1632c6ed6dadSVille Syrjälä 1633c6ed6dadSVille Syrjälä if (mode->flags & ~DRM_MODE_FLAG_ALL) 1634c6ed6dadSVille Syrjälä return MODE_BAD; 1635c6ed6dadSVille Syrjälä 1636064a3e6eSVille Syrjälä if ((mode->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) 1637064a3e6eSVille Syrjälä return MODE_BAD; 1638064a3e6eSVille Syrjälä 1639abc0b144SVille Syrjälä if (mode->clock == 0) 1640abc0b144SVille Syrjälä return MODE_CLOCK_LOW; 1641abc0b144SVille Syrjälä 1642abc0b144SVille Syrjälä if (mode->hdisplay == 0 || 1643abc0b144SVille Syrjälä mode->hsync_start < mode->hdisplay || 1644abc0b144SVille Syrjälä mode->hsync_end < mode->hsync_start || 1645abc0b144SVille Syrjälä mode->htotal < mode->hsync_end) 1646abc0b144SVille Syrjälä return MODE_H_ILLEGAL; 1647abc0b144SVille Syrjälä 1648abc0b144SVille Syrjälä if (mode->vdisplay == 0 || 1649abc0b144SVille Syrjälä mode->vsync_start < mode->vdisplay || 1650abc0b144SVille Syrjälä mode->vsync_end < mode->vsync_start || 1651abc0b144SVille Syrjälä mode->vtotal < mode->vsync_end) 1652abc0b144SVille Syrjälä return MODE_V_ILLEGAL; 1653abc0b144SVille Syrjälä 1654abc0b144SVille Syrjälä return MODE_OK; 1655abc0b144SVille Syrjälä } 165675a655e0SVille Syrjälä 165775a655e0SVille Syrjälä /** 165875a655e0SVille Syrjälä * drm_mode_validate_driver - make sure the mode is somewhat sane 165975a655e0SVille Syrjälä * @dev: drm device 166075a655e0SVille Syrjälä * @mode: mode to check 166175a655e0SVille Syrjälä * 166275a655e0SVille Syrjälä * First do basic validation on the mode, and then allow the driver 166375a655e0SVille Syrjälä * to check for device/driver specific limitations via the optional 166475a655e0SVille Syrjälä * &drm_mode_config_helper_funcs.mode_valid hook. 166575a655e0SVille Syrjälä * 166675a655e0SVille Syrjälä * Returns: 166775a655e0SVille Syrjälä * The mode status 166875a655e0SVille Syrjälä */ 166975a655e0SVille Syrjälä enum drm_mode_status 167075a655e0SVille Syrjälä drm_mode_validate_driver(struct drm_device *dev, 167175a655e0SVille Syrjälä const struct drm_display_mode *mode) 167275a655e0SVille Syrjälä { 167375a655e0SVille Syrjälä enum drm_mode_status status; 167475a655e0SVille Syrjälä 167575a655e0SVille Syrjälä status = drm_mode_validate_basic(mode); 167675a655e0SVille Syrjälä if (status != MODE_OK) 167775a655e0SVille Syrjälä return status; 167875a655e0SVille Syrjälä 167975a655e0SVille Syrjälä if (dev->mode_config.funcs->mode_valid) 168075a655e0SVille Syrjälä return dev->mode_config.funcs->mode_valid(dev, mode); 168175a655e0SVille Syrjälä else 168275a655e0SVille Syrjälä return MODE_OK; 168375a655e0SVille Syrjälä } 168475a655e0SVille Syrjälä EXPORT_SYMBOL(drm_mode_validate_driver); 1685abc0b144SVille Syrjälä 1686abc0b144SVille Syrjälä /** 1687f453ba04SDave Airlie * drm_mode_validate_size - make sure modes adhere to size constraints 168805acaec3SVille Syrjälä * @mode: mode to check 1689f453ba04SDave Airlie * @maxX: maximum width 1690f453ba04SDave Airlie * @maxY: maximum height 1691f453ba04SDave Airlie * 1692f5aabb97SDaniel Vetter * This function is a helper which can be used to validate modes against size 1693f5aabb97SDaniel Vetter * limitations of the DRM device/connector. If a mode is too big its status 169432197aabSMasanari Iida * member is updated with the appropriate validation failure code. The list 1695f5aabb97SDaniel Vetter * itself is not changed. 169605acaec3SVille Syrjälä * 169705acaec3SVille Syrjälä * Returns: 169805acaec3SVille Syrjälä * The mode status 1699f453ba04SDave Airlie */ 170005acaec3SVille Syrjälä enum drm_mode_status 170105acaec3SVille Syrjälä drm_mode_validate_size(const struct drm_display_mode *mode, 17023e70292cSDaniel Vetter int maxX, int maxY) 1703f453ba04SDave Airlie { 1704f453ba04SDave Airlie if (maxX > 0 && mode->hdisplay > maxX) 170505acaec3SVille Syrjälä return MODE_VIRTUAL_X; 1706f453ba04SDave Airlie 1707f453ba04SDave Airlie if (maxY > 0 && mode->vdisplay > maxY) 170805acaec3SVille Syrjälä return MODE_VIRTUAL_Y; 170905acaec3SVille Syrjälä 171005acaec3SVille Syrjälä return MODE_OK; 1711f453ba04SDave Airlie } 1712f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_validate_size); 1713f453ba04SDave Airlie 1714d8523153SShashank Sharma /** 1715d8523153SShashank Sharma * drm_mode_validate_ycbcr420 - add 'ycbcr420-only' modes only when allowed 1716d8523153SShashank Sharma * @mode: mode to check 1717d8523153SShashank Sharma * @connector: drm connector under action 1718d8523153SShashank Sharma * 1719d8523153SShashank Sharma * This function is a helper which can be used to filter out any YCBCR420 1720d8523153SShashank Sharma * only mode, when the source doesn't support it. 1721d8523153SShashank Sharma * 1722d8523153SShashank Sharma * Returns: 1723d8523153SShashank Sharma * The mode status 1724d8523153SShashank Sharma */ 1725d8523153SShashank Sharma enum drm_mode_status 1726d8523153SShashank Sharma drm_mode_validate_ycbcr420(const struct drm_display_mode *mode, 1727d8523153SShashank Sharma struct drm_connector *connector) 1728d8523153SShashank Sharma { 17291c4f39b0SVille Syrjälä if (!connector->ycbcr_420_allowed && 17301c4f39b0SVille Syrjälä drm_mode_is_420_only(&connector->display_info, mode)) 17311c4f39b0SVille Syrjälä return MODE_NO_420; 1732d8523153SShashank Sharma 17331c4f39b0SVille Syrjälä return MODE_OK; 1734d8523153SShashank Sharma } 1735d8523153SShashank Sharma EXPORT_SYMBOL(drm_mode_validate_ycbcr420); 1736d8523153SShashank Sharma 1737e4bf44b3SVille Syrjälä #define MODE_STATUS(status) [MODE_ ## status + 3] = #status 1738e4bf44b3SVille Syrjälä 1739e4bf44b3SVille Syrjälä static const char * const drm_mode_status_names[] = { 1740e4bf44b3SVille Syrjälä MODE_STATUS(OK), 1741e4bf44b3SVille Syrjälä MODE_STATUS(HSYNC), 1742e4bf44b3SVille Syrjälä MODE_STATUS(VSYNC), 1743e4bf44b3SVille Syrjälä MODE_STATUS(H_ILLEGAL), 1744e4bf44b3SVille Syrjälä MODE_STATUS(V_ILLEGAL), 1745e4bf44b3SVille Syrjälä MODE_STATUS(BAD_WIDTH), 1746e4bf44b3SVille Syrjälä MODE_STATUS(NOMODE), 1747e4bf44b3SVille Syrjälä MODE_STATUS(NO_INTERLACE), 1748e4bf44b3SVille Syrjälä MODE_STATUS(NO_DBLESCAN), 1749e4bf44b3SVille Syrjälä MODE_STATUS(NO_VSCAN), 1750e4bf44b3SVille Syrjälä MODE_STATUS(MEM), 1751e4bf44b3SVille Syrjälä MODE_STATUS(VIRTUAL_X), 1752e4bf44b3SVille Syrjälä MODE_STATUS(VIRTUAL_Y), 1753e4bf44b3SVille Syrjälä MODE_STATUS(MEM_VIRT), 1754e4bf44b3SVille Syrjälä MODE_STATUS(NOCLOCK), 1755e4bf44b3SVille Syrjälä MODE_STATUS(CLOCK_HIGH), 1756e4bf44b3SVille Syrjälä MODE_STATUS(CLOCK_LOW), 1757e4bf44b3SVille Syrjälä MODE_STATUS(CLOCK_RANGE), 1758e4bf44b3SVille Syrjälä MODE_STATUS(BAD_HVALUE), 1759e4bf44b3SVille Syrjälä MODE_STATUS(BAD_VVALUE), 1760e4bf44b3SVille Syrjälä MODE_STATUS(BAD_VSCAN), 1761e4bf44b3SVille Syrjälä MODE_STATUS(HSYNC_NARROW), 1762e4bf44b3SVille Syrjälä MODE_STATUS(HSYNC_WIDE), 1763e4bf44b3SVille Syrjälä MODE_STATUS(HBLANK_NARROW), 1764e4bf44b3SVille Syrjälä MODE_STATUS(HBLANK_WIDE), 1765e4bf44b3SVille Syrjälä MODE_STATUS(VSYNC_NARROW), 1766e4bf44b3SVille Syrjälä MODE_STATUS(VSYNC_WIDE), 1767e4bf44b3SVille Syrjälä MODE_STATUS(VBLANK_NARROW), 1768e4bf44b3SVille Syrjälä MODE_STATUS(VBLANK_WIDE), 1769e4bf44b3SVille Syrjälä MODE_STATUS(PANEL), 1770e4bf44b3SVille Syrjälä MODE_STATUS(INTERLACE_WIDTH), 1771e4bf44b3SVille Syrjälä MODE_STATUS(ONE_WIDTH), 1772e4bf44b3SVille Syrjälä MODE_STATUS(ONE_HEIGHT), 1773e4bf44b3SVille Syrjälä MODE_STATUS(ONE_SIZE), 1774e4bf44b3SVille Syrjälä MODE_STATUS(NO_REDUCED), 1775e4bf44b3SVille Syrjälä MODE_STATUS(NO_STEREO), 1776d8523153SShashank Sharma MODE_STATUS(NO_420), 17775ba89406SVille Syrjälä MODE_STATUS(STALE), 1778e4bf44b3SVille Syrjälä MODE_STATUS(BAD), 1779e4bf44b3SVille Syrjälä MODE_STATUS(ERROR), 1780e4bf44b3SVille Syrjälä }; 1781e4bf44b3SVille Syrjälä 1782e4bf44b3SVille Syrjälä #undef MODE_STATUS 1783e4bf44b3SVille Syrjälä 17846ab0edf4SVille Syrjälä const char *drm_get_mode_status_name(enum drm_mode_status status) 1785e4bf44b3SVille Syrjälä { 1786e4bf44b3SVille Syrjälä int index = status + 3; 1787e4bf44b3SVille Syrjälä 1788e4bf44b3SVille Syrjälä if (WARN_ON(index < 0 || index >= ARRAY_SIZE(drm_mode_status_names))) 1789e4bf44b3SVille Syrjälä return ""; 1790e4bf44b3SVille Syrjälä 1791e4bf44b3SVille Syrjälä return drm_mode_status_names[index]; 1792e4bf44b3SVille Syrjälä } 1793e4bf44b3SVille Syrjälä 1794f453ba04SDave Airlie /** 1795f453ba04SDave Airlie * drm_mode_prune_invalid - remove invalid modes from mode list 1796f453ba04SDave Airlie * @dev: DRM device 1797f453ba04SDave Airlie * @mode_list: list of modes to check 1798f453ba04SDave Airlie * @verbose: be verbose about it 1799f453ba04SDave Airlie * 1800f5aabb97SDaniel Vetter * This helper function can be used to prune a display mode list after 18011e55a53aSMatt Roper * validation has been completed. All modes whose status is not MODE_OK will be 1802f5aabb97SDaniel Vetter * removed from the list, and if @verbose the status code and mode name is also 1803f5aabb97SDaniel Vetter * printed to dmesg. 1804f453ba04SDave Airlie */ 1805f453ba04SDave Airlie void drm_mode_prune_invalid(struct drm_device *dev, 1806f453ba04SDave Airlie struct list_head *mode_list, bool verbose) 1807f453ba04SDave Airlie { 1808f453ba04SDave Airlie struct drm_display_mode *mode, *t; 1809f453ba04SDave Airlie 1810f453ba04SDave Airlie list_for_each_entry_safe(mode, t, mode_list, head) { 1811f453ba04SDave Airlie if (mode->status != MODE_OK) { 1812f453ba04SDave Airlie list_del(&mode->head); 1813b6415bd7SThomas Zimmermann if (mode->type & DRM_MODE_TYPE_USERDEF) { 1814b6415bd7SThomas Zimmermann drm_warn(dev, "User-defined mode not supported: " 1815b6415bd7SThomas Zimmermann DRM_MODE_FMT "\n", DRM_MODE_ARG(mode)); 1816b6415bd7SThomas Zimmermann } 1817f453ba04SDave Airlie if (verbose) { 181896a91515SJani Nikula drm_dbg_kms(dev, "Rejected mode: " DRM_MODE_FMT " (%s)\n", 181996a91515SJani Nikula DRM_MODE_ARG(mode), drm_get_mode_status_name(mode->status)); 1820f453ba04SDave Airlie } 1821f453ba04SDave Airlie drm_mode_destroy(dev, mode); 1822f453ba04SDave Airlie } 1823f453ba04SDave Airlie } 1824f453ba04SDave Airlie } 1825f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_prune_invalid); 1826f453ba04SDave Airlie 1827f453ba04SDave Airlie /** 1828f453ba04SDave Airlie * drm_mode_compare - compare modes for favorability 18292c761270SDave Chinner * @priv: unused 1830f453ba04SDave Airlie * @lh_a: list_head for first mode 1831f453ba04SDave Airlie * @lh_b: list_head for second mode 1832f453ba04SDave Airlie * 1833f453ba04SDave Airlie * Compare two modes, given by @lh_a and @lh_b, returning a value indicating 1834f453ba04SDave Airlie * which is better. 1835f453ba04SDave Airlie * 1836f5aabb97SDaniel Vetter * Returns: 1837f453ba04SDave Airlie * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or 1838f453ba04SDave Airlie * positive if @lh_b is better than @lh_a. 1839f453ba04SDave Airlie */ 18404f0f586bSSami Tolvanen static int drm_mode_compare(void *priv, const struct list_head *lh_a, 18414f0f586bSSami Tolvanen const struct list_head *lh_b) 1842f453ba04SDave Airlie { 1843f453ba04SDave Airlie struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head); 1844f453ba04SDave Airlie struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head); 1845f453ba04SDave Airlie int diff; 1846f453ba04SDave Airlie 1847f453ba04SDave Airlie diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) - 1848f453ba04SDave Airlie ((a->type & DRM_MODE_TYPE_PREFERRED) != 0); 1849f453ba04SDave Airlie if (diff) 1850f453ba04SDave Airlie return diff; 1851f453ba04SDave Airlie diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay; 1852f453ba04SDave Airlie if (diff) 1853f453ba04SDave Airlie return diff; 18549bc3cd56SVille Syrjälä 18550425662fSVille Syrjälä diff = drm_mode_vrefresh(b) - drm_mode_vrefresh(a); 18569bc3cd56SVille Syrjälä if (diff) 18579bc3cd56SVille Syrjälä return diff; 18589bc3cd56SVille Syrjälä 1859f453ba04SDave Airlie diff = b->clock - a->clock; 1860f453ba04SDave Airlie return diff; 1861f453ba04SDave Airlie } 1862f453ba04SDave Airlie 1863f453ba04SDave Airlie /** 1864f453ba04SDave Airlie * drm_mode_sort - sort mode list 1865f5aabb97SDaniel Vetter * @mode_list: list of drm_display_mode structures to sort 1866f453ba04SDave Airlie * 1867f5aabb97SDaniel Vetter * Sort @mode_list by favorability, moving good modes to the head of the list. 1868f453ba04SDave Airlie */ 1869f453ba04SDave Airlie void drm_mode_sort(struct list_head *mode_list) 1870f453ba04SDave Airlie { 18712c761270SDave Chinner list_sort(NULL, mode_list, drm_mode_compare); 1872f453ba04SDave Airlie } 1873f453ba04SDave Airlie EXPORT_SYMBOL(drm_mode_sort); 1874f453ba04SDave Airlie 1875f453ba04SDave Airlie /** 187697e14fbeSDaniel Vetter * drm_connector_list_update - update the mode list for the connector 1877f453ba04SDave Airlie * @connector: the connector to update 1878f453ba04SDave Airlie * 1879f453ba04SDave Airlie * This moves the modes from the @connector probed_modes list 1880f453ba04SDave Airlie * to the actual mode list. It compares the probed mode against the current 1881f5aabb97SDaniel Vetter * list and only adds different/new modes. 1882f5aabb97SDaniel Vetter * 1883f5aabb97SDaniel Vetter * This is just a helper functions doesn't validate any modes itself and also 1884f5aabb97SDaniel Vetter * doesn't prune any invalid modes. Callers need to do that themselves. 1885f453ba04SDave Airlie */ 188697e14fbeSDaniel Vetter void drm_connector_list_update(struct drm_connector *connector) 1887f453ba04SDave Airlie { 1888f453ba04SDave Airlie struct drm_display_mode *pmode, *pt; 1889f453ba04SDave Airlie 189063951385SDaniel Vetter WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); 189163951385SDaniel Vetter 18922f8c19e7SVille Syrjälä list_for_each_entry_safe(pmode, pt, &connector->probed_modes, head) { 18932f8c19e7SVille Syrjälä struct drm_display_mode *mode; 18942f8c19e7SVille Syrjälä bool found_it = false; 18952f8c19e7SVille Syrjälä 1896f453ba04SDave Airlie /* go through current modes checking for the new probed mode */ 1897f453ba04SDave Airlie list_for_each_entry(mode, &connector->modes, head) { 18982f8c19e7SVille Syrjälä if (!drm_mode_equal(pmode, mode)) 18992f8c19e7SVille Syrjälä continue; 19002f8c19e7SVille Syrjälä 19012f8c19e7SVille Syrjälä found_it = true; 1902fc245f88SVille Syrjälä 1903fc245f88SVille Syrjälä /* 1904fc245f88SVille Syrjälä * If the old matching mode is stale (ie. left over 1905fc245f88SVille Syrjälä * from a previous probe) just replace it outright. 1906fc245f88SVille Syrjälä * Otherwise just merge the type bits between all 1907fc245f88SVille Syrjälä * equal probed modes. 1908fc245f88SVille Syrjälä * 1909fc245f88SVille Syrjälä * If two probed modes are considered equal, pick the 1910fc245f88SVille Syrjälä * actual timings from the one that's marked as 1911fc245f88SVille Syrjälä * preferred (in case the match isn't 100%). If 1912fc245f88SVille Syrjälä * multiple or zero preferred modes are present, favor 1913fc245f88SVille Syrjälä * the mode added to the probed_modes list first. 1914fc245f88SVille Syrjälä */ 1915fc245f88SVille Syrjälä if (mode->status == MODE_STALE) { 1916fc245f88SVille Syrjälä drm_mode_copy(mode, pmode); 1917fc245f88SVille Syrjälä } else if ((mode->type & DRM_MODE_TYPE_PREFERRED) == 0 && 1918fc245f88SVille Syrjälä (pmode->type & DRM_MODE_TYPE_PREFERRED) != 0) { 1919fc245f88SVille Syrjälä pmode->type |= mode->type; 1920fc245f88SVille Syrjälä drm_mode_copy(mode, pmode); 1921fc245f88SVille Syrjälä } else { 1922abce1ec9SDave Airlie mode->type |= pmode->type; 1923fc245f88SVille Syrjälä } 1924fc245f88SVille Syrjälä 1925f453ba04SDave Airlie list_del(&pmode->head); 1926f453ba04SDave Airlie drm_mode_destroy(connector->dev, pmode); 1927f453ba04SDave Airlie break; 1928f453ba04SDave Airlie } 1929f453ba04SDave Airlie 1930f453ba04SDave Airlie if (!found_it) { 1931f453ba04SDave Airlie list_move_tail(&pmode->head, &connector->modes); 1932f453ba04SDave Airlie } 1933f453ba04SDave Airlie } 1934f453ba04SDave Airlie } 193597e14fbeSDaniel Vetter EXPORT_SYMBOL(drm_connector_list_update); 19361794d257SChris Wilson 1937e08ab74bSMaxime Ripard static int drm_mode_parse_cmdline_bpp(const char *str, char **end_ptr, 1938e08ab74bSMaxime Ripard struct drm_cmdline_mode *mode) 1939e08ab74bSMaxime Ripard { 1940e08ab74bSMaxime Ripard unsigned int bpp; 1941e08ab74bSMaxime Ripard 1942e08ab74bSMaxime Ripard if (str[0] != '-') 1943e08ab74bSMaxime Ripard return -EINVAL; 1944e08ab74bSMaxime Ripard 1945e08ab74bSMaxime Ripard str++; 1946e08ab74bSMaxime Ripard bpp = simple_strtol(str, end_ptr, 10); 1947e08ab74bSMaxime Ripard if (*end_ptr == str) 1948e08ab74bSMaxime Ripard return -EINVAL; 1949e08ab74bSMaxime Ripard 1950e08ab74bSMaxime Ripard mode->bpp = bpp; 1951e08ab74bSMaxime Ripard mode->bpp_specified = true; 1952e08ab74bSMaxime Ripard 1953e08ab74bSMaxime Ripard return 0; 1954e08ab74bSMaxime Ripard } 1955e08ab74bSMaxime Ripard 1956e08ab74bSMaxime Ripard static int drm_mode_parse_cmdline_refresh(const char *str, char **end_ptr, 1957e08ab74bSMaxime Ripard struct drm_cmdline_mode *mode) 1958e08ab74bSMaxime Ripard { 1959e08ab74bSMaxime Ripard unsigned int refresh; 1960e08ab74bSMaxime Ripard 1961e08ab74bSMaxime Ripard if (str[0] != '@') 1962e08ab74bSMaxime Ripard return -EINVAL; 1963e08ab74bSMaxime Ripard 1964e08ab74bSMaxime Ripard str++; 1965e08ab74bSMaxime Ripard refresh = simple_strtol(str, end_ptr, 10); 1966e08ab74bSMaxime Ripard if (*end_ptr == str) 1967e08ab74bSMaxime Ripard return -EINVAL; 1968e08ab74bSMaxime Ripard 1969e08ab74bSMaxime Ripard mode->refresh = refresh; 1970e08ab74bSMaxime Ripard mode->refresh_specified = true; 1971e08ab74bSMaxime Ripard 1972e08ab74bSMaxime Ripard return 0; 1973e08ab74bSMaxime Ripard } 1974e08ab74bSMaxime Ripard 1975e08ab74bSMaxime Ripard static int drm_mode_parse_cmdline_extra(const char *str, int length, 1976325d0ab3SMaxime Ripard bool freestanding, 1977c0898fcaSArnd Bergmann const struct drm_connector *connector, 1978e08ab74bSMaxime Ripard struct drm_cmdline_mode *mode) 1979e08ab74bSMaxime Ripard { 1980e08ab74bSMaxime Ripard int i; 1981e08ab74bSMaxime Ripard 1982e08ab74bSMaxime Ripard for (i = 0; i < length; i++) { 1983e08ab74bSMaxime Ripard switch (str[i]) { 1984e08ab74bSMaxime Ripard case 'i': 1985325d0ab3SMaxime Ripard if (freestanding) 1986325d0ab3SMaxime Ripard return -EINVAL; 1987325d0ab3SMaxime Ripard 1988e08ab74bSMaxime Ripard mode->interlace = true; 1989e08ab74bSMaxime Ripard break; 1990e08ab74bSMaxime Ripard case 'm': 1991325d0ab3SMaxime Ripard if (freestanding) 1992325d0ab3SMaxime Ripard return -EINVAL; 1993325d0ab3SMaxime Ripard 1994e08ab74bSMaxime Ripard mode->margins = true; 1995e08ab74bSMaxime Ripard break; 1996e08ab74bSMaxime Ripard case 'D': 1997e08ab74bSMaxime Ripard if (mode->force != DRM_FORCE_UNSPECIFIED) 1998e08ab74bSMaxime Ripard return -EINVAL; 1999e08ab74bSMaxime Ripard 2000e08ab74bSMaxime Ripard if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && 2001e08ab74bSMaxime Ripard (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) 2002e08ab74bSMaxime Ripard mode->force = DRM_FORCE_ON; 2003e08ab74bSMaxime Ripard else 2004e08ab74bSMaxime Ripard mode->force = DRM_FORCE_ON_DIGITAL; 2005e08ab74bSMaxime Ripard break; 2006e08ab74bSMaxime Ripard case 'd': 2007e08ab74bSMaxime Ripard if (mode->force != DRM_FORCE_UNSPECIFIED) 2008e08ab74bSMaxime Ripard return -EINVAL; 2009e08ab74bSMaxime Ripard 2010e08ab74bSMaxime Ripard mode->force = DRM_FORCE_OFF; 2011e08ab74bSMaxime Ripard break; 2012e08ab74bSMaxime Ripard case 'e': 2013e08ab74bSMaxime Ripard if (mode->force != DRM_FORCE_UNSPECIFIED) 2014e08ab74bSMaxime Ripard return -EINVAL; 2015e08ab74bSMaxime Ripard 2016e08ab74bSMaxime Ripard mode->force = DRM_FORCE_ON; 2017e08ab74bSMaxime Ripard break; 2018e08ab74bSMaxime Ripard default: 2019e08ab74bSMaxime Ripard return -EINVAL; 2020e08ab74bSMaxime Ripard } 2021e08ab74bSMaxime Ripard } 2022e08ab74bSMaxime Ripard 2023e08ab74bSMaxime Ripard return 0; 2024e08ab74bSMaxime Ripard } 2025e08ab74bSMaxime Ripard 2026e08ab74bSMaxime Ripard static int drm_mode_parse_cmdline_res_mode(const char *str, unsigned int length, 2027e08ab74bSMaxime Ripard bool extras, 2028c0898fcaSArnd Bergmann const struct drm_connector *connector, 2029e08ab74bSMaxime Ripard struct drm_cmdline_mode *mode) 2030e08ab74bSMaxime Ripard { 2031e08ab74bSMaxime Ripard const char *str_start = str; 2032e08ab74bSMaxime Ripard bool rb = false, cvt = false; 2033e08ab74bSMaxime Ripard int xres = 0, yres = 0; 2034e08ab74bSMaxime Ripard int remaining, i; 2035e08ab74bSMaxime Ripard char *end_ptr; 2036e08ab74bSMaxime Ripard 2037e08ab74bSMaxime Ripard xres = simple_strtol(str, &end_ptr, 10); 2038e08ab74bSMaxime Ripard if (end_ptr == str) 2039e08ab74bSMaxime Ripard return -EINVAL; 2040e08ab74bSMaxime Ripard 2041e08ab74bSMaxime Ripard if (end_ptr[0] != 'x') 2042e08ab74bSMaxime Ripard return -EINVAL; 2043e08ab74bSMaxime Ripard end_ptr++; 2044e08ab74bSMaxime Ripard 2045e08ab74bSMaxime Ripard str = end_ptr; 2046e08ab74bSMaxime Ripard yres = simple_strtol(str, &end_ptr, 10); 2047e08ab74bSMaxime Ripard if (end_ptr == str) 2048e08ab74bSMaxime Ripard return -EINVAL; 2049e08ab74bSMaxime Ripard 2050e08ab74bSMaxime Ripard remaining = length - (end_ptr - str_start); 2051e08ab74bSMaxime Ripard if (remaining < 0) 2052e08ab74bSMaxime Ripard return -EINVAL; 2053e08ab74bSMaxime Ripard 2054e08ab74bSMaxime Ripard for (i = 0; i < remaining; i++) { 2055e08ab74bSMaxime Ripard switch (end_ptr[i]) { 2056e08ab74bSMaxime Ripard case 'M': 2057e08ab74bSMaxime Ripard cvt = true; 2058e08ab74bSMaxime Ripard break; 2059e08ab74bSMaxime Ripard case 'R': 2060e08ab74bSMaxime Ripard rb = true; 2061e08ab74bSMaxime Ripard break; 2062e08ab74bSMaxime Ripard default: 2063e08ab74bSMaxime Ripard /* 2064e08ab74bSMaxime Ripard * Try to pass that to our extras parsing 2065e08ab74bSMaxime Ripard * function to handle the case where the 2066e08ab74bSMaxime Ripard * extras are directly after the resolution 2067e08ab74bSMaxime Ripard */ 2068e08ab74bSMaxime Ripard if (extras) { 2069e08ab74bSMaxime Ripard int ret = drm_mode_parse_cmdline_extra(end_ptr + i, 2070e08ab74bSMaxime Ripard 1, 2071325d0ab3SMaxime Ripard false, 2072e08ab74bSMaxime Ripard connector, 2073e08ab74bSMaxime Ripard mode); 2074e08ab74bSMaxime Ripard if (ret) 2075e08ab74bSMaxime Ripard return ret; 2076e08ab74bSMaxime Ripard } else { 2077e08ab74bSMaxime Ripard return -EINVAL; 2078e08ab74bSMaxime Ripard } 2079e08ab74bSMaxime Ripard } 2080e08ab74bSMaxime Ripard } 2081e08ab74bSMaxime Ripard 2082e08ab74bSMaxime Ripard mode->xres = xres; 2083e08ab74bSMaxime Ripard mode->yres = yres; 2084e08ab74bSMaxime Ripard mode->cvt = cvt; 2085e08ab74bSMaxime Ripard mode->rb = rb; 2086e08ab74bSMaxime Ripard 2087e08ab74bSMaxime Ripard return 0; 2088e08ab74bSMaxime Ripard } 2089e08ab74bSMaxime Ripard 20908582e244SHans de Goede static int drm_mode_parse_cmdline_int(const char *delim, unsigned int *int_ret) 20918582e244SHans de Goede { 20928582e244SHans de Goede const char *value; 20938582e244SHans de Goede char *endp; 20948582e244SHans de Goede 20958582e244SHans de Goede /* 20968582e244SHans de Goede * delim must point to the '=', otherwise it is a syntax error and 20970ae865efSCai Huoqing * if delim points to the terminating zero, then delim + 1 will point 20988582e244SHans de Goede * past the end of the string. 20998582e244SHans de Goede */ 21008582e244SHans de Goede if (*delim != '=') 21018582e244SHans de Goede return -EINVAL; 21028582e244SHans de Goede 21038582e244SHans de Goede value = delim + 1; 21048582e244SHans de Goede *int_ret = simple_strtol(value, &endp, 10); 21058582e244SHans de Goede 21068582e244SHans de Goede /* Make sure we have parsed something */ 21078582e244SHans de Goede if (endp == value) 21088582e244SHans de Goede return -EINVAL; 21098582e244SHans de Goede 21108582e244SHans de Goede return 0; 21118582e244SHans de Goede } 21128582e244SHans de Goede 21134e7a4a6fSHans de Goede static int drm_mode_parse_panel_orientation(const char *delim, 21144e7a4a6fSHans de Goede struct drm_cmdline_mode *mode) 21154e7a4a6fSHans de Goede { 21164e7a4a6fSHans de Goede const char *value; 21174e7a4a6fSHans de Goede 21184e7a4a6fSHans de Goede if (*delim != '=') 21194e7a4a6fSHans de Goede return -EINVAL; 21204e7a4a6fSHans de Goede 21214e7a4a6fSHans de Goede value = delim + 1; 21224e7a4a6fSHans de Goede delim = strchr(value, ','); 21234e7a4a6fSHans de Goede if (!delim) 21244e7a4a6fSHans de Goede delim = value + strlen(value); 21254e7a4a6fSHans de Goede 21264e7a4a6fSHans de Goede if (!strncmp(value, "normal", delim - value)) 21274e7a4a6fSHans de Goede mode->panel_orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL; 21284e7a4a6fSHans de Goede else if (!strncmp(value, "upside_down", delim - value)) 21294e7a4a6fSHans de Goede mode->panel_orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP; 21304e7a4a6fSHans de Goede else if (!strncmp(value, "left_side_up", delim - value)) 21314e7a4a6fSHans de Goede mode->panel_orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP; 21324e7a4a6fSHans de Goede else if (!strncmp(value, "right_side_up", delim - value)) 21334e7a4a6fSHans de Goede mode->panel_orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP; 21344e7a4a6fSHans de Goede else 21354e7a4a6fSHans de Goede return -EINVAL; 21364e7a4a6fSHans de Goede 21374e7a4a6fSHans de Goede return 0; 21384e7a4a6fSHans de Goede } 21394e7a4a6fSHans de Goede 2140e691c999SMaxime Ripard static int drm_mode_parse_tv_mode(const char *delim, 2141e691c999SMaxime Ripard struct drm_cmdline_mode *mode) 2142e691c999SMaxime Ripard { 2143e691c999SMaxime Ripard const char *value; 2144e691c999SMaxime Ripard int ret; 2145e691c999SMaxime Ripard 2146e691c999SMaxime Ripard if (*delim != '=') 2147e691c999SMaxime Ripard return -EINVAL; 2148e691c999SMaxime Ripard 2149e691c999SMaxime Ripard value = delim + 1; 2150e691c999SMaxime Ripard delim = strchr(value, ','); 2151e691c999SMaxime Ripard if (!delim) 2152e691c999SMaxime Ripard delim = value + strlen(value); 2153e691c999SMaxime Ripard 2154e691c999SMaxime Ripard ret = drm_get_tv_mode_from_name(value, delim - value); 2155e691c999SMaxime Ripard if (ret < 0) 2156e691c999SMaxime Ripard return ret; 2157e691c999SMaxime Ripard 2158e691c999SMaxime Ripard mode->tv_mode_specified = true; 2159e691c999SMaxime Ripard mode->tv_mode = ret; 2160e691c999SMaxime Ripard 2161e691c999SMaxime Ripard return 0; 2162e691c999SMaxime Ripard } 2163e691c999SMaxime Ripard 2164739b200cSHans de Goede static int drm_mode_parse_cmdline_options(const char *str, 216599e2716eSHans de Goede bool freestanding, 2166c0898fcaSArnd Bergmann const struct drm_connector *connector, 21671bf4e092SMaxime Ripard struct drm_cmdline_mode *mode) 21681bf4e092SMaxime Ripard { 21698582e244SHans de Goede unsigned int deg, margin, rotation = 0; 2170739b200cSHans de Goede const char *delim, *option, *sep; 21711bf4e092SMaxime Ripard 2172739b200cSHans de Goede option = str; 2173739b200cSHans de Goede do { 21741bf4e092SMaxime Ripard delim = strchr(option, '='); 21751bf4e092SMaxime Ripard if (!delim) { 21761bf4e092SMaxime Ripard delim = strchr(option, ','); 21771bf4e092SMaxime Ripard 21781bf4e092SMaxime Ripard if (!delim) 2179739b200cSHans de Goede delim = option + strlen(option); 21801bf4e092SMaxime Ripard } 21811bf4e092SMaxime Ripard 21821bf4e092SMaxime Ripard if (!strncmp(option, "rotate", delim - option)) { 21838582e244SHans de Goede if (drm_mode_parse_cmdline_int(delim, °)) 21841bf4e092SMaxime Ripard return -EINVAL; 21851bf4e092SMaxime Ripard 21861bf4e092SMaxime Ripard switch (deg) { 21871bf4e092SMaxime Ripard case 0: 21881bf4e092SMaxime Ripard rotation |= DRM_MODE_ROTATE_0; 21891bf4e092SMaxime Ripard break; 21901bf4e092SMaxime Ripard 21911bf4e092SMaxime Ripard case 90: 21921bf4e092SMaxime Ripard rotation |= DRM_MODE_ROTATE_90; 21931bf4e092SMaxime Ripard break; 21941bf4e092SMaxime Ripard 21951bf4e092SMaxime Ripard case 180: 21961bf4e092SMaxime Ripard rotation |= DRM_MODE_ROTATE_180; 21971bf4e092SMaxime Ripard break; 21981bf4e092SMaxime Ripard 21991bf4e092SMaxime Ripard case 270: 22001bf4e092SMaxime Ripard rotation |= DRM_MODE_ROTATE_270; 22011bf4e092SMaxime Ripard break; 22021bf4e092SMaxime Ripard 22031bf4e092SMaxime Ripard default: 22041bf4e092SMaxime Ripard return -EINVAL; 22051bf4e092SMaxime Ripard } 22061bf4e092SMaxime Ripard } else if (!strncmp(option, "reflect_x", delim - option)) { 22071bf4e092SMaxime Ripard rotation |= DRM_MODE_REFLECT_X; 22081bf4e092SMaxime Ripard } else if (!strncmp(option, "reflect_y", delim - option)) { 22091bf4e092SMaxime Ripard rotation |= DRM_MODE_REFLECT_Y; 22103d46a300SMaxime Ripard } else if (!strncmp(option, "margin_right", delim - option)) { 22118582e244SHans de Goede if (drm_mode_parse_cmdline_int(delim, &margin)) 22123d46a300SMaxime Ripard return -EINVAL; 22133d46a300SMaxime Ripard 22143d46a300SMaxime Ripard mode->tv_margins.right = margin; 22153d46a300SMaxime Ripard } else if (!strncmp(option, "margin_left", delim - option)) { 22168582e244SHans de Goede if (drm_mode_parse_cmdline_int(delim, &margin)) 22173d46a300SMaxime Ripard return -EINVAL; 22183d46a300SMaxime Ripard 22193d46a300SMaxime Ripard mode->tv_margins.left = margin; 22203d46a300SMaxime Ripard } else if (!strncmp(option, "margin_top", delim - option)) { 22218582e244SHans de Goede if (drm_mode_parse_cmdline_int(delim, &margin)) 22223d46a300SMaxime Ripard return -EINVAL; 22233d46a300SMaxime Ripard 22243d46a300SMaxime Ripard mode->tv_margins.top = margin; 22253d46a300SMaxime Ripard } else if (!strncmp(option, "margin_bottom", delim - option)) { 22268582e244SHans de Goede if (drm_mode_parse_cmdline_int(delim, &margin)) 22273d46a300SMaxime Ripard return -EINVAL; 22283d46a300SMaxime Ripard 22293d46a300SMaxime Ripard mode->tv_margins.bottom = margin; 22304e7a4a6fSHans de Goede } else if (!strncmp(option, "panel_orientation", delim - option)) { 22314e7a4a6fSHans de Goede if (drm_mode_parse_panel_orientation(delim, mode)) 22324e7a4a6fSHans de Goede return -EINVAL; 2233e691c999SMaxime Ripard } else if (!strncmp(option, "tv_mode", delim - option)) { 2234e691c999SMaxime Ripard if (drm_mode_parse_tv_mode(delim, mode)) 2235e691c999SMaxime Ripard return -EINVAL; 22361bf4e092SMaxime Ripard } else { 22371bf4e092SMaxime Ripard return -EINVAL; 22381bf4e092SMaxime Ripard } 2239739b200cSHans de Goede sep = strchr(delim, ','); 2240739b200cSHans de Goede option = sep + 1; 2241739b200cSHans de Goede } while (sep); 22421bf4e092SMaxime Ripard 224399e2716eSHans de Goede if (rotation && freestanding) 224499e2716eSHans de Goede return -EINVAL; 224599e2716eSHans de Goede 2246e6980a72SStephan Gerhold if (!(rotation & DRM_MODE_ROTATE_MASK)) 2247e6980a72SStephan Gerhold rotation |= DRM_MODE_ROTATE_0; 2248e6980a72SStephan Gerhold 2249e6980a72SStephan Gerhold /* Make sure there is exactly one rotation defined */ 2250e6980a72SStephan Gerhold if (!is_power_of_2(rotation & DRM_MODE_ROTATE_MASK)) 2251e6980a72SStephan Gerhold return -EINVAL; 2252e6980a72SStephan Gerhold 22531bf4e092SMaxime Ripard mode->rotation_reflection = rotation; 22541bf4e092SMaxime Ripard 22551bf4e092SMaxime Ripard return 0; 22561bf4e092SMaxime Ripard } 22571bf4e092SMaxime Ripard 2258a7ab1553SMaxime Ripard struct drm_named_mode { 2259a7ab1553SMaxime Ripard const char *name; 22600e308efeSMaxime Ripard unsigned int pixel_clock_khz; 226100dcc4a2SMaxime Ripard unsigned int xres; 226200dcc4a2SMaxime Ripard unsigned int yres; 226300dcc4a2SMaxime Ripard unsigned int flags; 2264e691c999SMaxime Ripard unsigned int tv_mode; 2265a7ab1553SMaxime Ripard }; 2266a7ab1553SMaxime Ripard 2267e691c999SMaxime Ripard #define NAMED_MODE(_name, _pclk, _x, _y, _flags, _mode) \ 226800dcc4a2SMaxime Ripard { \ 226900dcc4a2SMaxime Ripard .name = _name, \ 22700e308efeSMaxime Ripard .pixel_clock_khz = _pclk, \ 227100dcc4a2SMaxime Ripard .xres = _x, \ 227200dcc4a2SMaxime Ripard .yres = _y, \ 227300dcc4a2SMaxime Ripard .flags = _flags, \ 2274e691c999SMaxime Ripard .tv_mode = _mode, \ 227500dcc4a2SMaxime Ripard } 227600dcc4a2SMaxime Ripard 2277a7ab1553SMaxime Ripard static const struct drm_named_mode drm_named_modes[] = { 2278e691c999SMaxime Ripard NAMED_MODE("NTSC", 13500, 720, 480, DRM_MODE_FLAG_INTERLACE, DRM_MODE_TV_MODE_NTSC), 22790740ac38SMaxime Ripard NAMED_MODE("NTSC-J", 13500, 720, 480, DRM_MODE_FLAG_INTERLACE, DRM_MODE_TV_MODE_NTSC_J), 2280e691c999SMaxime Ripard NAMED_MODE("PAL", 13500, 720, 576, DRM_MODE_FLAG_INTERLACE, DRM_MODE_TV_MODE_PAL), 22810740ac38SMaxime Ripard NAMED_MODE("PAL-M", 13500, 720, 480, DRM_MODE_FLAG_INTERLACE, DRM_MODE_TV_MODE_PAL_M), 228237641379SMaxime Ripard }; 228337641379SMaxime Ripard 2284a631bf30SMaxime Ripard static int drm_mode_parse_cmdline_named_mode(const char *name, 2285a631bf30SMaxime Ripard unsigned int name_end, 2286a631bf30SMaxime Ripard struct drm_cmdline_mode *cmdline_mode) 2287a631bf30SMaxime Ripard { 2288a631bf30SMaxime Ripard unsigned int i; 2289a631bf30SMaxime Ripard 2290a631bf30SMaxime Ripard if (!name_end) 2291a631bf30SMaxime Ripard return 0; 2292a631bf30SMaxime Ripard 2293a631bf30SMaxime Ripard /* If the name starts with a digit, it's not a named mode */ 2294a631bf30SMaxime Ripard if (isdigit(name[0])) 2295a631bf30SMaxime Ripard return 0; 2296a631bf30SMaxime Ripard 2297a631bf30SMaxime Ripard /* 2298a631bf30SMaxime Ripard * If there's an equal sign in the name, the command-line 2299a631bf30SMaxime Ripard * contains only an option and no mode. 2300a631bf30SMaxime Ripard */ 2301a631bf30SMaxime Ripard if (strnchr(name, name_end, '=')) 2302a631bf30SMaxime Ripard return 0; 2303a631bf30SMaxime Ripard 2304a631bf30SMaxime Ripard /* The connection status extras can be set without a mode. */ 2305a631bf30SMaxime Ripard if (name_end == 1 && 2306a631bf30SMaxime Ripard (name[0] == 'd' || name[0] == 'D' || name[0] == 'e')) 2307a631bf30SMaxime Ripard return 0; 2308a631bf30SMaxime Ripard 2309a631bf30SMaxime Ripard /* 2310a631bf30SMaxime Ripard * We're sure we're a named mode at this point, iterate over the 2311a631bf30SMaxime Ripard * list of modes we're aware of. 2312a631bf30SMaxime Ripard */ 2313a7ab1553SMaxime Ripard for (i = 0; i < ARRAY_SIZE(drm_named_modes); i++) { 2314a7ab1553SMaxime Ripard const struct drm_named_mode *mode = &drm_named_modes[i]; 2315a631bf30SMaxime Ripard int ret; 2316a631bf30SMaxime Ripard 2317a7ab1553SMaxime Ripard ret = str_has_prefix(name, mode->name); 2318a631bf30SMaxime Ripard if (ret != name_end) 2319a631bf30SMaxime Ripard continue; 2320a631bf30SMaxime Ripard 23210f9aa074SMaxime Ripard strscpy(cmdline_mode->name, mode->name, sizeof(cmdline_mode->name)); 23220e308efeSMaxime Ripard cmdline_mode->pixel_clock = mode->pixel_clock_khz; 232300dcc4a2SMaxime Ripard cmdline_mode->xres = mode->xres; 232400dcc4a2SMaxime Ripard cmdline_mode->yres = mode->yres; 232500dcc4a2SMaxime Ripard cmdline_mode->interlace = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); 2326e691c999SMaxime Ripard cmdline_mode->tv_mode = mode->tv_mode; 2327e691c999SMaxime Ripard cmdline_mode->tv_mode_specified = true; 2328a631bf30SMaxime Ripard cmdline_mode->specified = true; 2329a631bf30SMaxime Ripard 2330a631bf30SMaxime Ripard return 1; 2331a631bf30SMaxime Ripard } 2332a631bf30SMaxime Ripard 2333a631bf30SMaxime Ripard return -EINVAL; 2334a631bf30SMaxime Ripard } 2335a631bf30SMaxime Ripard 23361794d257SChris Wilson /** 2337f5aabb97SDaniel Vetter * drm_mode_parse_command_line_for_connector - parse command line modeline for connector 2338f5aabb97SDaniel Vetter * @mode_option: optional per connector mode option 2339f5aabb97SDaniel Vetter * @connector: connector to parse modeline for 2340f5aabb97SDaniel Vetter * @mode: preallocated drm_cmdline_mode structure to fill out 23411794d257SChris Wilson * 2342f5aabb97SDaniel Vetter * This parses @mode_option command line modeline for modes and options to 23431e84dadbSThomas Zimmermann * configure the connector. 23441794d257SChris Wilson * 2345f5aabb97SDaniel Vetter * This uses the same parameters as the fb modedb.c, except for an extra 2346dbd124f0SDaniel Vetter * force-enable, force-enable-digital and force-disable bit at the end:: 2347f5aabb97SDaniel Vetter * 23481794d257SChris Wilson * <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd] 23491794d257SChris Wilson * 23501bf4e092SMaxime Ripard * Additionals options can be provided following the mode, using a comma to 23511bf4e092SMaxime Ripard * separate each option. Valid options can be found in 2352bff9e34cSMauro Carvalho Chehab * Documentation/fb/modedb.rst. 23531bf4e092SMaxime Ripard * 2354f5aabb97SDaniel Vetter * The intermediate drm_cmdline_mode structure is required to store additional 23552a97acd6SYannick Guerrini * options from the command line modline like the force-enable/disable flag. 2356f5aabb97SDaniel Vetter * 2357f5aabb97SDaniel Vetter * Returns: 2358f5aabb97SDaniel Vetter * True if a valid modeline has been parsed, false otherwise. 23591794d257SChris Wilson */ 23601794d257SChris Wilson bool drm_mode_parse_command_line_for_connector(const char *mode_option, 2361c0898fcaSArnd Bergmann const struct drm_connector *connector, 23621794d257SChris Wilson struct drm_cmdline_mode *mode) 23631794d257SChris Wilson { 23641794d257SChris Wilson const char *name; 23657b1cce76SHans de Goede bool freestanding = false, parse_extras = false; 23661bf4e092SMaxime Ripard unsigned int bpp_off = 0, refresh_off = 0, options_off = 0; 2367e08ab74bSMaxime Ripard unsigned int mode_end = 0; 236883e14ea3SHans de Goede const char *bpp_ptr = NULL, *refresh_ptr = NULL, *extra_ptr = NULL; 236983e14ea3SHans de Goede const char *options_ptr = NULL; 2370e08ab74bSMaxime Ripard char *bpp_end_ptr = NULL, *refresh_end_ptr = NULL; 2371a631bf30SMaxime Ripard int len, ret; 23721794d257SChris Wilson 2373d1fe276bSHans de Goede memset(mode, 0, sizeof(*mode)); 23744e7a4a6fSHans de Goede mode->panel_orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN; 23754e7a4a6fSHans de Goede 2376d1fe276bSHans de Goede if (!mode_option) 23771794d257SChris Wilson return false; 23781794d257SChris Wilson 23791794d257SChris Wilson name = mode_option; 238004fee895SRolf Eike Beer 23811bf4e092SMaxime Ripard /* Locate the start of named options */ 23821bf4e092SMaxime Ripard options_ptr = strchr(name, ','); 23831bf4e092SMaxime Ripard if (options_ptr) 23841bf4e092SMaxime Ripard options_off = options_ptr - name; 238590c258baSMaxime Ripard else 238690c258baSMaxime Ripard options_off = strlen(name); 238790c258baSMaxime Ripard 238890c258baSMaxime Ripard /* Try to locate the bpp and refresh specifiers, if any */ 238990c258baSMaxime Ripard bpp_ptr = strnchr(name, options_off, '-'); 23908b6e28eaSGeert Uytterhoeven while (bpp_ptr && !isdigit(bpp_ptr[1])) 23918b6e28eaSGeert Uytterhoeven bpp_ptr = strnchr(bpp_ptr + 1, options_off, '-'); 239290c258baSMaxime Ripard if (bpp_ptr) 239390c258baSMaxime Ripard bpp_off = bpp_ptr - name; 239490c258baSMaxime Ripard 239590c258baSMaxime Ripard refresh_ptr = strnchr(name, options_off, '@'); 239690c258baSMaxime Ripard if (refresh_ptr) 239790c258baSMaxime Ripard refresh_off = refresh_ptr - name; 23981bf4e092SMaxime Ripard 2399e08ab74bSMaxime Ripard /* Locate the end of the name / resolution, and parse it */ 24001bf4e092SMaxime Ripard if (bpp_ptr) { 2401e08ab74bSMaxime Ripard mode_end = bpp_off; 2402e08ab74bSMaxime Ripard } else if (refresh_ptr) { 2403e08ab74bSMaxime Ripard mode_end = refresh_off; 24041bf4e092SMaxime Ripard } else if (options_ptr) { 24051bf4e092SMaxime Ripard mode_end = options_off; 2406cfb0881bSHans de Goede parse_extras = true; 2407e08ab74bSMaxime Ripard } else { 2408e08ab74bSMaxime Ripard mode_end = strlen(name); 2409e08ab74bSMaxime Ripard parse_extras = true; 2410e08ab74bSMaxime Ripard } 2411e08ab74bSMaxime Ripard 2412a631bf30SMaxime Ripard if (!mode_end) 2413a631bf30SMaxime Ripard return false; 241437641379SMaxime Ripard 2415a631bf30SMaxime Ripard ret = drm_mode_parse_cmdline_named_mode(name, mode_end, mode); 2416a631bf30SMaxime Ripard if (ret < 0) 2417a631bf30SMaxime Ripard return false; 2418a631bf30SMaxime Ripard 2419a631bf30SMaxime Ripard /* 2420a631bf30SMaxime Ripard * Having a mode that starts by a letter (and thus is named) and 2421a631bf30SMaxime Ripard * an at-sign (used to specify a refresh rate) is disallowed. 2422a631bf30SMaxime Ripard */ 2423a631bf30SMaxime Ripard if (ret && refresh_ptr) 2424a631bf30SMaxime Ripard return false; 242537641379SMaxime Ripard 24267b1cce76SHans de Goede /* No named mode? Check for a normal mode argument, e.g. 1024x768 */ 24277b1cce76SHans de Goede if (!mode->specified && isdigit(name[0])) { 2428e08ab74bSMaxime Ripard ret = drm_mode_parse_cmdline_res_mode(name, mode_end, 2429e08ab74bSMaxime Ripard parse_extras, 2430e08ab74bSMaxime Ripard connector, 2431e08ab74bSMaxime Ripard mode); 2432e08ab74bSMaxime Ripard if (ret) 2433e08ab74bSMaxime Ripard return false; 24347b1cce76SHans de Goede 2435e08ab74bSMaxime Ripard mode->specified = true; 24367b1cce76SHans de Goede } 24377b1cce76SHans de Goede 24387b1cce76SHans de Goede /* No mode? Check for freestanding extras and/or options */ 24397b1cce76SHans de Goede if (!mode->specified) { 24407b1cce76SHans de Goede unsigned int len = strlen(mode_option); 24417b1cce76SHans de Goede 24427b1cce76SHans de Goede if (bpp_ptr || refresh_ptr) 24437b1cce76SHans de Goede return false; /* syntax error */ 24447b1cce76SHans de Goede 24457b1cce76SHans de Goede if (len == 1 || (len >= 2 && mode_option[1] == ',')) 24467b1cce76SHans de Goede extra_ptr = mode_option; 24477b1cce76SHans de Goede else 24487b1cce76SHans de Goede options_ptr = mode_option - 1; 24497b1cce76SHans de Goede 24507b1cce76SHans de Goede freestanding = true; 24517b1cce76SHans de Goede } 2452e08ab74bSMaxime Ripard 2453e08ab74bSMaxime Ripard if (bpp_ptr) { 2454e08ab74bSMaxime Ripard ret = drm_mode_parse_cmdline_bpp(bpp_ptr, &bpp_end_ptr, mode); 2455e08ab74bSMaxime Ripard if (ret) 245604fee895SRolf Eike Beer return false; 24576a2d1637SHans de Goede 24586a2d1637SHans de Goede mode->bpp_specified = true; 245904fee895SRolf Eike Beer } 246004fee895SRolf Eike Beer 2461e08ab74bSMaxime Ripard if (refresh_ptr) { 2462e08ab74bSMaxime Ripard ret = drm_mode_parse_cmdline_refresh(refresh_ptr, 2463e08ab74bSMaxime Ripard &refresh_end_ptr, mode); 2464e08ab74bSMaxime Ripard if (ret) 2465e08ab74bSMaxime Ripard return false; 24666a2d1637SHans de Goede 24676a2d1637SHans de Goede mode->refresh_specified = true; 24681794d257SChris Wilson } 24691794d257SChris Wilson 2470e08ab74bSMaxime Ripard /* 2471e08ab74bSMaxime Ripard * Locate the end of the bpp / refresh, and parse the extras 2472e08ab74bSMaxime Ripard * if relevant 2473e08ab74bSMaxime Ripard */ 2474e08ab74bSMaxime Ripard if (bpp_ptr && refresh_ptr) 2475e08ab74bSMaxime Ripard extra_ptr = max(bpp_end_ptr, refresh_end_ptr); 2476e08ab74bSMaxime Ripard else if (bpp_ptr) 2477e08ab74bSMaxime Ripard extra_ptr = bpp_end_ptr; 2478e08ab74bSMaxime Ripard else if (refresh_ptr) 2479e08ab74bSMaxime Ripard extra_ptr = refresh_end_ptr; 24801794d257SChris Wilson 2481c2ed3e94SHans de Goede if (extra_ptr) { 2482c2ed3e94SHans de Goede if (options_ptr) 2483c2ed3e94SHans de Goede len = options_ptr - extra_ptr; 2484c2ed3e94SHans de Goede else 2485c2ed3e94SHans de Goede len = strlen(extra_ptr); 24863aeeb13dSMaxime Ripard 24877b1cce76SHans de Goede ret = drm_mode_parse_cmdline_extra(extra_ptr, len, freestanding, 24883aeeb13dSMaxime Ripard connector, mode); 24893aeeb13dSMaxime Ripard if (ret) 24903aeeb13dSMaxime Ripard return false; 24911794d257SChris Wilson } 24921bf4e092SMaxime Ripard 24931bf4e092SMaxime Ripard if (options_ptr) { 2494739b200cSHans de Goede ret = drm_mode_parse_cmdline_options(options_ptr + 1, 24957b1cce76SHans de Goede freestanding, 24961bf4e092SMaxime Ripard connector, mode); 24971bf4e092SMaxime Ripard if (ret) 24981bf4e092SMaxime Ripard return false; 24993aeeb13dSMaxime Ripard } 25001794d257SChris Wilson 25011794d257SChris Wilson return true; 25021794d257SChris Wilson } 25031794d257SChris Wilson EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); 25041794d257SChris Wilson 2505fedcaf72SMaxime Ripard static struct drm_display_mode *drm_named_mode(struct drm_device *dev, 2506fedcaf72SMaxime Ripard struct drm_cmdline_mode *cmd) 2507fedcaf72SMaxime Ripard { 2508fedcaf72SMaxime Ripard unsigned int i; 2509fedcaf72SMaxime Ripard 2510fedcaf72SMaxime Ripard for (i = 0; i < ARRAY_SIZE(drm_named_modes); i++) { 2511fedcaf72SMaxime Ripard const struct drm_named_mode *named_mode = &drm_named_modes[i]; 2512fedcaf72SMaxime Ripard 2513fedcaf72SMaxime Ripard if (strcmp(cmd->name, named_mode->name)) 2514fedcaf72SMaxime Ripard continue; 2515fedcaf72SMaxime Ripard 2516fedcaf72SMaxime Ripard if (!cmd->tv_mode_specified) 2517fedcaf72SMaxime Ripard continue; 2518fedcaf72SMaxime Ripard 2519fedcaf72SMaxime Ripard return drm_analog_tv_mode(dev, 2520fedcaf72SMaxime Ripard named_mode->tv_mode, 2521fedcaf72SMaxime Ripard named_mode->pixel_clock_khz * 1000, 2522fedcaf72SMaxime Ripard named_mode->xres, 2523fedcaf72SMaxime Ripard named_mode->yres, 2524fedcaf72SMaxime Ripard named_mode->flags & DRM_MODE_FLAG_INTERLACE); 2525fedcaf72SMaxime Ripard } 2526fedcaf72SMaxime Ripard 2527fedcaf72SMaxime Ripard return NULL; 2528fedcaf72SMaxime Ripard } 2529fedcaf72SMaxime Ripard 2530f5aabb97SDaniel Vetter /** 2531f5aabb97SDaniel Vetter * drm_mode_create_from_cmdline_mode - convert a command line modeline into a DRM display mode 2532f5aabb97SDaniel Vetter * @dev: DRM device to create the new mode for 2533f5aabb97SDaniel Vetter * @cmd: input command line modeline 2534f5aabb97SDaniel Vetter * 2535f5aabb97SDaniel Vetter * Returns: 2536f5aabb97SDaniel Vetter * Pointer to converted mode on success, NULL on error. 2537f5aabb97SDaniel Vetter */ 25381794d257SChris Wilson struct drm_display_mode * 25391794d257SChris Wilson drm_mode_create_from_cmdline_mode(struct drm_device *dev, 25401794d257SChris Wilson struct drm_cmdline_mode *cmd) 25411794d257SChris Wilson { 25421794d257SChris Wilson struct drm_display_mode *mode; 25431794d257SChris Wilson 254419a9a0efSVille Syrjälä if (cmd->xres == 0 || cmd->yres == 0) 254519a9a0efSVille Syrjälä return NULL; 254619a9a0efSVille Syrjälä 2547fedcaf72SMaxime Ripard if (strlen(cmd->name)) 2548fedcaf72SMaxime Ripard mode = drm_named_mode(dev, cmd); 2549fedcaf72SMaxime Ripard else if (cmd->cvt) 25501794d257SChris Wilson mode = drm_cvt_mode(dev, 25511794d257SChris Wilson cmd->xres, cmd->yres, 25521794d257SChris Wilson cmd->refresh_specified ? cmd->refresh : 60, 25531794d257SChris Wilson cmd->rb, cmd->interlace, 25541794d257SChris Wilson cmd->margins); 25551794d257SChris Wilson else 25561794d257SChris Wilson mode = drm_gtf_mode(dev, 25571794d257SChris Wilson cmd->xres, cmd->yres, 25581794d257SChris Wilson cmd->refresh_specified ? cmd->refresh : 60, 25591794d257SChris Wilson cmd->interlace, 25601794d257SChris Wilson cmd->margins); 25611794d257SChris Wilson if (!mode) 25621794d257SChris Wilson return NULL; 25631794d257SChris Wilson 2564eaf99c74SChris Wilson mode->type |= DRM_MODE_TYPE_USERDEF; 2565fdf35a6bSTakashi Iwai /* fix up 1368x768: GFT/CVT can't express 1366 width due to alignment */ 2566969218feSTakashi Iwai if (cmd->xres == 1366) 2567969218feSTakashi Iwai drm_mode_fixup_1366x768(mode); 25681794d257SChris Wilson drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); 25691794d257SChris Wilson return mode; 25701794d257SChris Wilson } 25711794d257SChris Wilson EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); 2572934a8a89SDaniel Stone 2573934a8a89SDaniel Stone /** 2574e9d2871fSMauro Carvalho Chehab * drm_mode_convert_to_umode - convert a drm_display_mode into a modeinfo 2575934a8a89SDaniel Stone * @out: drm_mode_modeinfo struct to return to the user 2576934a8a89SDaniel Stone * @in: drm_display_mode to use 2577934a8a89SDaniel Stone * 2578934a8a89SDaniel Stone * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to 2579934a8a89SDaniel Stone * the user. 2580934a8a89SDaniel Stone */ 2581934a8a89SDaniel Stone void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, 2582934a8a89SDaniel Stone const struct drm_display_mode *in) 2583934a8a89SDaniel Stone { 2584934a8a89SDaniel Stone out->clock = in->clock; 2585934a8a89SDaniel Stone out->hdisplay = in->hdisplay; 2586934a8a89SDaniel Stone out->hsync_start = in->hsync_start; 2587934a8a89SDaniel Stone out->hsync_end = in->hsync_end; 2588934a8a89SDaniel Stone out->htotal = in->htotal; 2589934a8a89SDaniel Stone out->hskew = in->hskew; 2590934a8a89SDaniel Stone out->vdisplay = in->vdisplay; 2591934a8a89SDaniel Stone out->vsync_start = in->vsync_start; 2592934a8a89SDaniel Stone out->vsync_end = in->vsync_end; 2593934a8a89SDaniel Stone out->vtotal = in->vtotal; 2594934a8a89SDaniel Stone out->vscan = in->vscan; 25950425662fSVille Syrjälä out->vrefresh = drm_mode_vrefresh(in); 2596934a8a89SDaniel Stone out->flags = in->flags; 2597934a8a89SDaniel Stone out->type = in->type; 2598222ec161SShashank Sharma 2599222ec161SShashank Sharma switch (in->picture_aspect_ratio) { 2600222ec161SShashank Sharma case HDMI_PICTURE_ASPECT_4_3: 2601222ec161SShashank Sharma out->flags |= DRM_MODE_FLAG_PIC_AR_4_3; 2602222ec161SShashank Sharma break; 2603222ec161SShashank Sharma case HDMI_PICTURE_ASPECT_16_9: 2604222ec161SShashank Sharma out->flags |= DRM_MODE_FLAG_PIC_AR_16_9; 2605222ec161SShashank Sharma break; 2606900aa8adSShashank Sharma case HDMI_PICTURE_ASPECT_64_27: 2607900aa8adSShashank Sharma out->flags |= DRM_MODE_FLAG_PIC_AR_64_27; 2608900aa8adSShashank Sharma break; 2609900aa8adSShashank Sharma case HDMI_PICTURE_ASPECT_256_135: 2610900aa8adSShashank Sharma out->flags |= DRM_MODE_FLAG_PIC_AR_256_135; 2611900aa8adSShashank Sharma break; 2612222ec161SShashank Sharma default: 26139f396ab4SVille Syrjälä WARN(1, "Invalid aspect ratio (0%x) on mode\n", 26149f396ab4SVille Syrjälä in->picture_aspect_ratio); 2615df561f66SGustavo A. R. Silva fallthrough; 26169f396ab4SVille Syrjälä case HDMI_PICTURE_ASPECT_NONE: 2617222ec161SShashank Sharma out->flags |= DRM_MODE_FLAG_PIC_AR_NONE; 2618222ec161SShashank Sharma break; 2619222ec161SShashank Sharma } 2620222ec161SShashank Sharma 26213b2894c9SJustin Stitt strscpy_pad(out->name, in->name, sizeof(out->name)); 2622934a8a89SDaniel Stone } 2623934a8a89SDaniel Stone 2624934a8a89SDaniel Stone /** 2625e9d2871fSMauro Carvalho Chehab * drm_mode_convert_umode - convert a modeinfo into a drm_display_mode 262675a655e0SVille Syrjälä * @dev: drm device 2627934a8a89SDaniel Stone * @out: drm_display_mode to return to the user 2628934a8a89SDaniel Stone * @in: drm_mode_modeinfo to use 2629934a8a89SDaniel Stone * 2630934a8a89SDaniel Stone * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to 2631934a8a89SDaniel Stone * the caller. 2632934a8a89SDaniel Stone * 2633934a8a89SDaniel Stone * Returns: 2634934a8a89SDaniel Stone * Zero on success, negative errno on failure. 2635934a8a89SDaniel Stone */ 263675a655e0SVille Syrjälä int drm_mode_convert_umode(struct drm_device *dev, 263775a655e0SVille Syrjälä struct drm_display_mode *out, 2638934a8a89SDaniel Stone const struct drm_mode_modeinfo *in) 2639934a8a89SDaniel Stone { 2640df550548SVille Syrjälä if (in->clock > INT_MAX || in->vrefresh > INT_MAX) 2641df550548SVille Syrjälä return -ERANGE; 2642934a8a89SDaniel Stone 2643934a8a89SDaniel Stone out->clock = in->clock; 2644934a8a89SDaniel Stone out->hdisplay = in->hdisplay; 2645934a8a89SDaniel Stone out->hsync_start = in->hsync_start; 2646934a8a89SDaniel Stone out->hsync_end = in->hsync_end; 2647934a8a89SDaniel Stone out->htotal = in->htotal; 2648934a8a89SDaniel Stone out->hskew = in->hskew; 2649934a8a89SDaniel Stone out->vdisplay = in->vdisplay; 2650934a8a89SDaniel Stone out->vsync_start = in->vsync_start; 2651934a8a89SDaniel Stone out->vsync_end = in->vsync_end; 2652934a8a89SDaniel Stone out->vtotal = in->vtotal; 2653934a8a89SDaniel Stone out->vscan = in->vscan; 2654934a8a89SDaniel Stone out->flags = in->flags; 2655a01c4773SVille Syrjälä /* 2656a01c4773SVille Syrjälä * Old xf86-video-vmware (possibly others too) used to 26570ae865efSCai Huoqing * leave 'type' uninitialized. Just ignore any bits we 2658a01c4773SVille Syrjälä * don't like. It's a just hint after all, and more 2659a01c4773SVille Syrjälä * useful for the kernel->userspace direction anyway. 2660a01c4773SVille Syrjälä */ 2661a01c4773SVille Syrjälä out->type = in->type & DRM_MODE_TYPE_ALL; 26623b2894c9SJustin Stitt strscpy_pad(out->name, in->name, sizeof(out->name)); 2663934a8a89SDaniel Stone 2664222ec161SShashank Sharma /* Clearing picture aspect ratio bits from out flags, 2665222ec161SShashank Sharma * as the aspect-ratio information is not stored in 2666222ec161SShashank Sharma * flags for kernel-mode, but in picture_aspect_ratio. 2667222ec161SShashank Sharma */ 2668222ec161SShashank Sharma out->flags &= ~DRM_MODE_FLAG_PIC_AR_MASK; 2669222ec161SShashank Sharma 2670222ec161SShashank Sharma switch (in->flags & DRM_MODE_FLAG_PIC_AR_MASK) { 2671222ec161SShashank Sharma case DRM_MODE_FLAG_PIC_AR_4_3: 2672700710e9SVille Syrjälä out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_4_3; 2673222ec161SShashank Sharma break; 2674222ec161SShashank Sharma case DRM_MODE_FLAG_PIC_AR_16_9: 2675700710e9SVille Syrjälä out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_16_9; 2676222ec161SShashank Sharma break; 2677900aa8adSShashank Sharma case DRM_MODE_FLAG_PIC_AR_64_27: 2678700710e9SVille Syrjälä out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_64_27; 2679900aa8adSShashank Sharma break; 2680900aa8adSShashank Sharma case DRM_MODE_FLAG_PIC_AR_256_135: 2681700710e9SVille Syrjälä out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_256_135; 2682900aa8adSShashank Sharma break; 2683993a8067SVille Syrjälä case DRM_MODE_FLAG_PIC_AR_NONE: 2684222ec161SShashank Sharma out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE; 2685222ec161SShashank Sharma break; 2686993a8067SVille Syrjälä default: 2687993a8067SVille Syrjälä return -EINVAL; 2688222ec161SShashank Sharma } 2689222ec161SShashank Sharma 269075a655e0SVille Syrjälä out->status = drm_mode_validate_driver(dev, out); 2691934a8a89SDaniel Stone if (out->status != MODE_OK) 2692df550548SVille Syrjälä return -EINVAL; 2693934a8a89SDaniel Stone 2694b201e743STomi Valkeinen drm_mode_set_crtcinfo(out, CRTC_INTERLACE_HALVE_V); 2695b201e743STomi Valkeinen 2696df550548SVille Syrjälä return 0; 2697934a8a89SDaniel Stone } 26982570fe25SShashank Sharma 26992570fe25SShashank Sharma /** 27002570fe25SShashank Sharma * drm_mode_is_420_only - if a given videomode can be only supported in YCBCR420 27012570fe25SShashank Sharma * output format 27022570fe25SShashank Sharma * 27038d0873a2SSean Paul * @display: display under action 27042570fe25SShashank Sharma * @mode: video mode to be tested. 27052570fe25SShashank Sharma * 27062570fe25SShashank Sharma * Returns: 27072570fe25SShashank Sharma * true if the mode can be supported in YCBCR420 format 27082570fe25SShashank Sharma * false if not. 27092570fe25SShashank Sharma */ 27102570fe25SShashank Sharma bool drm_mode_is_420_only(const struct drm_display_info *display, 27112570fe25SShashank Sharma const struct drm_display_mode *mode) 27122570fe25SShashank Sharma { 27132570fe25SShashank Sharma u8 vic = drm_match_cea_mode(mode); 27142570fe25SShashank Sharma 27152570fe25SShashank Sharma return test_bit(vic, display->hdmi.y420_vdb_modes); 27162570fe25SShashank Sharma } 27172570fe25SShashank Sharma EXPORT_SYMBOL(drm_mode_is_420_only); 27182570fe25SShashank Sharma 27192570fe25SShashank Sharma /** 27202570fe25SShashank Sharma * drm_mode_is_420_also - if a given videomode can be supported in YCBCR420 27212570fe25SShashank Sharma * output format also (along with RGB/YCBCR444/422) 27222570fe25SShashank Sharma * 27232570fe25SShashank Sharma * @display: display under action. 27242570fe25SShashank Sharma * @mode: video mode to be tested. 27252570fe25SShashank Sharma * 27262570fe25SShashank Sharma * Returns: 27272570fe25SShashank Sharma * true if the mode can be support YCBCR420 format 27282570fe25SShashank Sharma * false if not. 27292570fe25SShashank Sharma */ 27302570fe25SShashank Sharma bool drm_mode_is_420_also(const struct drm_display_info *display, 27312570fe25SShashank Sharma const struct drm_display_mode *mode) 27322570fe25SShashank Sharma { 27332570fe25SShashank Sharma u8 vic = drm_match_cea_mode(mode); 27342570fe25SShashank Sharma 27352570fe25SShashank Sharma return test_bit(vic, display->hdmi.y420_cmdb_modes); 27362570fe25SShashank Sharma } 27372570fe25SShashank Sharma EXPORT_SYMBOL(drm_mode_is_420_also); 27382570fe25SShashank Sharma /** 27392570fe25SShashank Sharma * drm_mode_is_420 - if a given videomode can be supported in YCBCR420 27402570fe25SShashank Sharma * output format 27412570fe25SShashank Sharma * 27422570fe25SShashank Sharma * @display: display under action. 27432570fe25SShashank Sharma * @mode: video mode to be tested. 27442570fe25SShashank Sharma * 27452570fe25SShashank Sharma * Returns: 27462570fe25SShashank Sharma * true if the mode can be supported in YCBCR420 format 27472570fe25SShashank Sharma * false if not. 27482570fe25SShashank Sharma */ 27492570fe25SShashank Sharma bool drm_mode_is_420(const struct drm_display_info *display, 27502570fe25SShashank Sharma const struct drm_display_mode *mode) 27512570fe25SShashank Sharma { 27522570fe25SShashank Sharma return drm_mode_is_420_only(display, mode) || 27532570fe25SShashank Sharma drm_mode_is_420_also(display, mode); 27542570fe25SShashank Sharma } 27552570fe25SShashank Sharma EXPORT_SYMBOL(drm_mode_is_420); 27565343f29bSJavier Martinez Canillas 27575343f29bSJavier Martinez Canillas /** 27585343f29bSJavier Martinez Canillas * drm_set_preferred_mode - Sets the preferred mode of a connector 27595343f29bSJavier Martinez Canillas * @connector: connector whose mode list should be processed 27605343f29bSJavier Martinez Canillas * @hpref: horizontal resolution of preferred mode 27615343f29bSJavier Martinez Canillas * @vpref: vertical resolution of preferred mode 27625343f29bSJavier Martinez Canillas * 27635343f29bSJavier Martinez Canillas * Marks a mode as preferred if it matches the resolution specified by @hpref 27645343f29bSJavier Martinez Canillas * and @vpref. 27655343f29bSJavier Martinez Canillas */ 27665343f29bSJavier Martinez Canillas void drm_set_preferred_mode(struct drm_connector *connector, 27675343f29bSJavier Martinez Canillas int hpref, int vpref) 27685343f29bSJavier Martinez Canillas { 27695343f29bSJavier Martinez Canillas struct drm_display_mode *mode; 27705343f29bSJavier Martinez Canillas 27715343f29bSJavier Martinez Canillas list_for_each_entry(mode, &connector->probed_modes, head) { 27725343f29bSJavier Martinez Canillas if (mode->hdisplay == hpref && 27735343f29bSJavier Martinez Canillas mode->vdisplay == vpref) 27745343f29bSJavier Martinez Canillas mode->type |= DRM_MODE_TYPE_PREFERRED; 27755343f29bSJavier Martinez Canillas } 27765343f29bSJavier Martinez Canillas } 27775343f29bSJavier Martinez Canillas EXPORT_SYMBOL(drm_set_preferred_mode); 2778