root/drivers/gpu/drm/drm_panel_orientation_quirks.c

DEFINITIONS

1. drm_get_panel_orientation_quirk
2. drm_get_panel_orientation_quirk

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * drm_panel_orientation_quirks.c -- Quirks for non-normal panel orientation
   4  *
   5  * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
   6  *
   7  * Note the quirks in this file are shared with fbdev/efifb and as such
   8  * must not depend on other drm code.
   9  */
  10 
  11 #include <linux/dmi.h>
  12 #include <linux/module.h>
  13 #include <drm/drm_connector.h>
  14 #include <drm/drm_utils.h>
  15 
  16 #ifdef CONFIG_DMI
  17 
  18 /*
  19  * Some x86 clamshell design devices use portrait tablet screens and a display
  20  * engine which cannot rotate in hardware, so we need to rotate the fbcon to
  21  * compensate. Unfortunately these (cheap) devices also typically have quite
  22  * generic DMI data, so we match on a combination of DMI data, screen resolution
  23  * and a list of known BIOS dates to avoid false positives.
  24  */
  25 
  26 struct drm_dmi_panel_orientation_data {
  27         int width;
  28         int height;
  29         const char * const *bios_dates;
  30         int orientation;
  31 };
  32 
  33 static const struct drm_dmi_panel_orientation_data acer_s1003 = {
  34         .width = 800,
  35         .height = 1280,
  36         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  37 };
  38 
  39 static const struct drm_dmi_panel_orientation_data asus_t100ha = {
  40         .width = 800,
  41         .height = 1280,
  42         .orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
  43 };
  44 
  45 static const struct drm_dmi_panel_orientation_data gpd_micropc = {
  46         .width = 720,
  47         .height = 1280,
  48         .bios_dates = (const char * const []){ "04/26/2019",
  49                 NULL },
  50         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  51 };
  52 
  53 static const struct drm_dmi_panel_orientation_data gpd_pocket = {
  54         .width = 1200,
  55         .height = 1920,
  56         .bios_dates = (const char * const []){ "05/26/2017", "06/28/2017",
  57                 "07/05/2017", "08/07/2017", NULL },
  58         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  59 };
  60 
  61 static const struct drm_dmi_panel_orientation_data gpd_pocket2 = {
  62         .width = 1200,
  63         .height = 1920,
  64         .bios_dates = (const char * const []){ "06/28/2018", "08/28/2018",
  65                 "12/07/2018", NULL },
  66         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  67 };
  68 
  69 static const struct drm_dmi_panel_orientation_data gpd_win = {
  70         .width = 720,
  71         .height = 1280,
  72         .bios_dates = (const char * const []){
  73                 "10/25/2016", "11/18/2016", "12/23/2016", "12/26/2016",
  74                 "02/21/2017", "03/20/2017", "05/25/2017", NULL },
  75         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  76 };
  77 
  78 static const struct drm_dmi_panel_orientation_data gpd_win2 = {
  79         .width = 720,
  80         .height = 1280,
  81         .bios_dates = (const char * const []){
  82                 "12/07/2017", "05/24/2018", "06/29/2018", NULL },
  83         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  84 };
  85 
  86 static const struct drm_dmi_panel_orientation_data itworks_tw891 = {
  87         .width = 800,
  88         .height = 1280,
  89         .bios_dates = (const char * const []){ "10/16/2015", NULL },
  90         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  91 };
  92 
  93 static const struct drm_dmi_panel_orientation_data lcd720x1280_rightside_up = {
  94         .width = 720,
  95         .height = 1280,
  96         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  97 };
  98 
  99 static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = {
 100         .width = 800,
 101         .height = 1280,
 102         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 103 };
 104 
 105 static const struct drm_dmi_panel_orientation_data lcd1200x1920_rightside_up = {
 106         .width = 1200,
 107         .height = 1920,
 108         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
 109 };
 110 
 111 static const struct dmi_system_id orientation_data[] = {
 112         {       /* Acer One 10 (S1003) */
 113                 .matches = {
 114                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
 115                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
 116                 },
 117                 .driver_data = (void *)&acer_s1003,
 118         }, {    /* Asus T100HA */
 119                 .matches = {
 120                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 121                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
 122                 },
 123                 .driver_data = (void *)&asus_t100ha,
 124         }, {    /* GPD MicroPC (generic strings, also match on bios date) */
 125                 .matches = {
 126                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 127                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 128                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 129                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 130                 },
 131                 .driver_data = (void *)&gpd_micropc,
 132         }, {    /* GPD MicroPC (later BIOS versions with proper DMI strings) */
 133                 .matches = {
 134                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
 135                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MicroPC"),
 136                 },
 137                 .driver_data = (void *)&lcd720x1280_rightside_up,
 138         }, {    /*
 139                  * GPD Pocket, note that the the DMI data is less generic then
 140                  * it seems, devices with a board-vendor of "AMI Corporation"
 141                  * are quite rare, as are devices which have both board- *and*
 142                  * product-id set to "Default String"
 143                  */
 144                 .matches = {
 145                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 146                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 147                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 148                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 149                 },
 150                 .driver_data = (void *)&gpd_pocket,
 151         }, {    /* GPD Pocket 2 (generic strings, also match on bios date) */
 152                 .matches = {
 153                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 154                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 155                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 156                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 157                 },
 158                 .driver_data = (void *)&gpd_pocket2,
 159         }, {    /* GPD Win (same note on DMI match as GPD Pocket) */
 160                 .matches = {
 161                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 162                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 163                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 164                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 165                 },
 166                 .driver_data = (void *)&gpd_win,
 167         }, {    /* GPD Win 2 (too generic strings, also match on bios date) */
 168                 .matches = {
 169                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 170                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 171                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 172                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 173                 },
 174                 .driver_data = (void *)&gpd_win2,
 175         }, {    /* I.T.Works TW891 */
 176                 .matches = {
 177                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
 178                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
 179                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
 180                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
 181                 },
 182                 .driver_data = (void *)&itworks_tw891,
 183         }, {    /*
 184                  * Lenovo Ideapad Miix 310 laptop, only some production batches
 185                  * have a portrait screen, the resolution checks makes the quirk
 186                  * apply only to those batches.
 187                  */
 188                 .matches = {
 189                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 190                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
 191                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
 192                 },
 193                 .driver_data = (void *)&lcd800x1280_rightside_up,
 194         }, {    /* Lenovo Ideapad Miix 320 */
 195                 .matches = {
 196                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 197                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
 198                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
 199                 },
 200                 .driver_data = (void *)&lcd800x1280_rightside_up,
 201         }, {    /* Lenovo Ideapad D330 */
 202                 .matches = {
 203                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 204                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "81H3"),
 205                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"),
 206                 },
 207                 .driver_data = (void *)&lcd1200x1920_rightside_up,
 208         }, {    /* VIOS LTH17 */
 209                 .matches = {
 210                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
 211                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
 212                 },
 213                 .driver_data = (void *)&lcd800x1280_rightside_up,
 214         },
 215         {}
 216 };
 217 
 218 /**
 219  * drm_get_panel_orientation_quirk - Check for panel orientation quirks
 220  * @width: width in pixels of the panel
 221  * @height: height in pixels of the panel
 222  *
 223  * This function checks for platform specific (e.g. DMI based) quirks
 224  * providing info on panel_orientation for systems where this cannot be
 225  * probed from the hard-/firm-ware. To avoid false-positive this function
 226  * takes the panel resolution as argument and checks that against the
 227  * resolution expected by the quirk-table entry.
 228  *
 229  * Note this function is also used outside of the drm-subsys, by for example
 230  * the efifb code. Because of this this function gets compiled into its own
 231  * kernel-module when built as a module.
 232  *
 233  * Returns:
 234  * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system,
 235  * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk.
 236  */
 237 int drm_get_panel_orientation_quirk(int width, int height)
 238 {
 239         const struct dmi_system_id *match;
 240         const struct drm_dmi_panel_orientation_data *data;
 241         const char *bios_date;
 242         int i;
 243 
 244         for (match = dmi_first_match(orientation_data);
 245              match;
 246              match = dmi_first_match(match + 1)) {
 247                 data = match->driver_data;
 248 
 249                 if (data->width != width ||
 250                     data->height != height)
 251                         continue;
 252 
 253                 if (!data->bios_dates)
 254                         return data->orientation;
 255 
 256                 bios_date = dmi_get_system_info(DMI_BIOS_DATE);
 257                 if (!bios_date)
 258                         continue;
 259 
 260                 i = match_string(data->bios_dates, -1, bios_date);
 261                 if (i >= 0)
 262                         return data->orientation;
 263         }
 264 
 265         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 266 }
 267 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 268 
 269 #else
 270 
 271 /* There are no quirks for non x86 devices yet */
 272 int drm_get_panel_orientation_quirk(int width, int height)
 273 {
 274         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 275 }
 276 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 277 
 278 #endif
 279 
 280 MODULE_LICENSE("Dual MIT/GPL");