drivers/gpu/drm/drm_panel_orientation_quirks.c

   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 asus_t100ha = {
  34         .width = 800,
  35         .height = 1280,
  36         .orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
  37 };
  38
  39 static const struct drm_dmi_panel_orientation_data gpd_micropc = {
  40         .width = 720,
  41         .height = 1280,
  42         .bios_dates = (const char * const []){ "04/26/2019",
  43                 NULL },
  44         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  45 };
  46
  47 static const struct drm_dmi_panel_orientation_data gpd_pocket = {
  48         .width = 1200,
  49         .height = 1920,
  50         .bios_dates = (const char * const []){ "05/26/2017", "06/28/2017",
  51                 "07/05/2017", "08/07/2017", NULL },
  52         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  53 };
  54
  55 static const struct drm_dmi_panel_orientation_data gpd_pocket2 = {
  56         .width = 1200,
  57         .height = 1920,
  58         .bios_dates = (const char * const []){ "06/28/2018", "08/28/2018",
  59                 "12/07/2018", NULL },
  60         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  61 };
  62
  63 static const struct drm_dmi_panel_orientation_data gpd_win = {
  64         .width = 720,
  65         .height = 1280,
  66         .bios_dates = (const char * const []){
  67                 "10/25/2016", "11/18/2016", "12/23/2016", "12/26/2016",
  68                 "02/21/2017", "03/20/2017", "05/25/2017", NULL },
  69         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  70 };
  71
  72 static const struct drm_dmi_panel_orientation_data itworks_tw891 = {
  73         .width = 800,
  74         .height = 1280,
  75         .bios_dates = (const char * const []){ "10/16/2015", NULL },
  76         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  77 };
  78
  79 static const struct drm_dmi_panel_orientation_data lcd720x1280_rightside_up = {
  80         .width = 720,
  81         .height = 1280,
  82         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  83 };
  84
  85 static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = {
  86         .width = 800,
  87         .height = 1280,
  88         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  89 };
  90
  91 static const struct dmi_system_id orientation_data[] = {
  92         {       /* Acer One 10 (S1003) */
  93                 .matches = {
  94                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
  95                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
  96                 },
  97                 .driver_data = (void *)&lcd800x1280_rightside_up,
  98         }, {    /* Asus T100HA */
  99                 .matches = {
 100                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 101                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
 102                 },
 103                 .driver_data = (void *)&asus_t100ha,
 104         }, {    /* Asus T101HA */
 105                 .matches = {
 106                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 107                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T101HA"),
 108                 },
 109                 .driver_data = (void *)&lcd800x1280_rightside_up,
 110         }, {    /* GPD MicroPC (generic strings, also match on bios date) */
 111                 .matches = {
 112                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 113                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 114                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 115                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 116                 },
 117                 .driver_data = (void *)&gpd_micropc,
 118         }, {    /* GPD MicroPC (later BIOS versions with proper DMI strings) */
 119                 .matches = {
 120                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "GPD"),
 121                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "MicroPC"),
 122                 },
 123                 .driver_data = (void *)&lcd720x1280_rightside_up,
 124         }, {    /*
 125                  * GPD Pocket, note that the the DMI data is less generic then
 126                  * it seems, devices with a board-vendor of "AMI Corporation"
 127                  * are quite rare, as are devices which have both board- *and*
 128                  * product-id set to "Default String"
 129                  */
 130                 .matches = {
 131                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 132                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 133                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 134                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 135                 },
 136                 .driver_data = (void *)&gpd_pocket,
 137         }, {    /* GPD Pocket 2 (generic strings, also match on bios date) */
 138                 .matches = {
 139                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"),
 140                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 141                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"),
 142                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 143                 },
 144                 .driver_data = (void *)&gpd_pocket2,
 145         }, {    /* GPD Win (same note on DMI match as GPD Pocket) */
 146                 .matches = {
 147                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 148                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 149                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 150                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 151                 },
 152                 .driver_data = (void *)&gpd_win,
 153         }, {    /* I.T.Works TW891 */
 154                 .matches = {
 155                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
 156                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
 157                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
 158                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
 159                 },
 160                 .driver_data = (void *)&itworks_tw891,
 161         }, {    /*
 162                  * Lenovo Ideapad Miix 310 laptop, only some production batches
 163                  * have a portrait screen, the resolution checks makes the quirk
 164                  * apply only to those batches.
 165                  */
 166                 .matches = {
 167                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 168                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
 169                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
 170                 },
 171                 .driver_data = (void *)&lcd800x1280_rightside_up,
 172         }, {    /* Lenovo Ideapad Miix 320 */
 173                 .matches = {
 174                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 175                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
 176                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
 177                 },
 178                 .driver_data = (void *)&lcd800x1280_rightside_up,
 179         }, {    /* VIOS LTH17 */
 180                 .matches = {
 181                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
 182                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
 183                 },
 184                 .driver_data = (void *)&lcd800x1280_rightside_up,
 185         },
 186         {}
 187 };
 188
 189 /**
 190  * drm_get_panel_orientation_quirk - Check for panel orientation quirks
 191  * @width: width in pixels of the panel
 192  * @height: height in pixels of the panel
 193  *
 194  * This function checks for platform specific (e.g. DMI based) quirks
 195  * providing info on panel_orientation for systems where this cannot be
 196  * probed from the hard-/firm-ware. To avoid false-positive this function
 197  * takes the panel resolution as argument and checks that against the
 198  * resolution expected by the quirk-table entry.
 199  *
 200  * Note this function is also used outside of the drm-subsys, by for example
 201  * the efifb code. Because of this this function gets compiled into its own
 202  * kernel-module when built as a module.
 203  *
 204  * Returns:
 205  * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system,
 206  * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk.
 207  */
 208 int drm_get_panel_orientation_quirk(int width, int height)
 209 {
 210         const struct dmi_system_id *match;
 211         const struct drm_dmi_panel_orientation_data *data;
 212         const char *bios_date;
 213         int i;
 214
 215         for (match = dmi_first_match(orientation_data);
 216              match;
 217              match = dmi_first_match(match + 1)) {
 218                 data = match->driver_data;
 219
 220                 if (data->width != width ||
 221                     data->height != height)
 222                         continue;
 223
 224                 if (!data->bios_dates)
 225                         return data->orientation;
 226
 227                 bios_date = dmi_get_system_info(DMI_BIOS_DATE);
 228                 if (!bios_date)
 229                         continue;
 230
 231                 i = match_string(data->bios_dates, -1, bios_date);
 232                 if (i >= 0)
 233                         return data->orientation;
 234         }
 235
 236         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 237 }
 238 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 239
 240 #else
 241
 242 /* There are no quirks for non x86 devices yet */
 243 int drm_get_panel_orientation_quirk(int width, int height)
 244 {
 245         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 246 }
 247 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 248
 249 #endif
 250
 251 MODULE_LICENSE("Dual MIT/GPL");