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 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_pocket = {
  46         .width = 1200,
  47         .height = 1920,
  48         .bios_dates = (const char * const []){ "05/26/2017", "06/28/2017",
  49                 "07/05/2017", "08/07/2017", NULL },
  50         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  51 };
  52
  53 static const struct drm_dmi_panel_orientation_data gpd_win = {
  54         .width = 720,
  55         .height = 1280,
  56         .bios_dates = (const char * const []){
  57                 "10/25/2016", "11/18/2016", "12/23/2016", "12/26/2016",
  58                 "02/21/2017", "03/20/2017", "05/25/2017", NULL },
  59         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  60 };
  61
  62 static const struct drm_dmi_panel_orientation_data itworks_tw891 = {
  63         .width = 800,
  64         .height = 1280,
  65         .bios_dates = (const char * const []){ "10/16/2015", NULL },
  66         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  67 };
  68
  69 static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = {
  70         .width = 800,
  71         .height = 1280,
  72         .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
  73 };
  74
  75 static const struct dmi_system_id orientation_data[] = {
  76         {       /* Acer One 10 (S1003) */
  77                 .matches = {
  78                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"),
  79                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"),
  80                 },
  81                 .driver_data = (void *)&acer_s1003,
  82         }, {    /* Asus T100HA */
  83                 .matches = {
  84                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
  85                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
  86                 },
  87                 .driver_data = (void *)&asus_t100ha,
  88         }, {    /*
  89                  * GPD Pocket, note that the the DMI data is less generic then
  90                  * it seems, devices with a board-vendor of "AMI Corporation"
  91                  * are quite rare, as are devices which have both board- *and*
  92                  * product-id set to "Default String"
  93                  */
  94                 .matches = {
  95                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
  96                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
  97                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
  98                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
  99                 },
 100                 .driver_data = (void *)&gpd_pocket,
 101         }, {    /* GPD Win (same note on DMI match as GPD Pocket) */
 102                 .matches = {
 103                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 104                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
 105                   DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
 106                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
 107                 },
 108                 .driver_data = (void *)&gpd_win,
 109         }, {    /* I.T.Works TW891 */
 110                 .matches = {
 111                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
 112                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
 113                   DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
 114                   DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
 115                 },
 116                 .driver_data = (void *)&itworks_tw891,
 117         }, {    /*
 118                  * Lenovo Ideapad Miix 310 laptop, only some production batches
 119                  * have a portrait screen, the resolution checks makes the quirk
 120                  * apply only to those batches.
 121                  */
 122                 .matches = {
 123                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 124                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"),
 125                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"),
 126                 },
 127                 .driver_data = (void *)&lcd800x1280_rightside_up,
 128         }, {    /* Lenovo Ideapad Miix 320 */
 129                 .matches = {
 130                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 131                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"),
 132                   DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
 133                 },
 134                 .driver_data = (void *)&lcd800x1280_rightside_up,
 135         }, {    /* VIOS LTH17 */
 136                 .matches = {
 137                   DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
 138                   DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
 139                 },
 140                 .driver_data = (void *)&lcd800x1280_rightside_up,
 141         },
 142         {}
 143 };
 144
 145 /**
 146  * drm_get_panel_orientation_quirk - Check for panel orientation quirks
 147  * @width: width in pixels of the panel
 148  * @height: height in pixels of the panel
 149  *
 150  * This function checks for platform specific (e.g. DMI based) quirks
 151  * providing info on panel_orientation for systems where this cannot be
 152  * probed from the hard-/firm-ware. To avoid false-positive this function
 153  * takes the panel resolution as argument and checks that against the
 154  * resolution expected by the quirk-table entry.
 155  *
 156  * Note this function is also used outside of the drm-subsys, by for example
 157  * the efifb code. Because of this this function gets compiled into its own
 158  * kernel-module when built as a module.
 159  *
 160  * Returns:
 161  * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system,
 162  * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk.
 163  */
 164 int drm_get_panel_orientation_quirk(int width, int height)
 165 {
 166         const struct dmi_system_id *match;
 167         const struct drm_dmi_panel_orientation_data *data;
 168         const char *bios_date;
 169         int i;
 170
 171         for (match = dmi_first_match(orientation_data);
 172              match;
 173              match = dmi_first_match(match + 1)) {
 174                 data = match->driver_data;
 175
 176                 if (data->width != width ||
 177                     data->height != height)
 178                         continue;
 179
 180                 if (!data->bios_dates)
 181                         return data->orientation;
 182
 183                 bios_date = dmi_get_system_info(DMI_BIOS_DATE);
 184                 if (!bios_date)
 185                         continue;
 186
 187                 i = match_string(data->bios_dates, -1, bios_date);
 188                 if (i >= 0)
 189                         return data->orientation;
 190         }
 191
 192         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 193 }
 194 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 195
 196 #else
 197
 198 /* There are no quirks for non x86 devices yet */
 199 int drm_get_panel_orientation_quirk(int width, int height)
 200 {
 201         return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 202 }
 203 EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
 204
 205 #endif
 206
 207 MODULE_LICENSE("Dual MIT/GPL");