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 gpd_win2 = { 63 .width = 720, 64 .height = 1280, 65 .bios_dates = (const char * const []){ 66 "12/07/2017", "05/24/2018", "06/29/2018", NULL }, 67 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 68 }; 69 70 static const struct drm_dmi_panel_orientation_data itworks_tw891 = { 71 .width = 800, 72 .height = 1280, 73 .bios_dates = (const char * const []){ "10/16/2015", NULL }, 74 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 75 }; 76 77 static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = { 78 .width = 800, 79 .height = 1280, 80 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 81 }; 82 83 static const struct drm_dmi_panel_orientation_data lcd1200x1920_rightside_up = { 84 .width = 1200, 85 .height = 1920, 86 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 87 }; 88 89 static const struct dmi_system_id orientation_data[] = { 90 { /* Acer One 10 (S1003) */ 91 .matches = { 92 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"), 93 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"), 94 }, 95 .driver_data = (void *)&acer_s1003, 96 }, { /* Asus T100HA */ 97 .matches = { 98 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 99 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"), 100 }, 101 .driver_data = (void *)&asus_t100ha, 102 }, { /* 103 * GPD Pocket, note that the the DMI data is less generic then 104 * it seems, devices with a board-vendor of "AMI Corporation" 105 * are quite rare, as are devices which have both board- *and* 106 * product-id set to "Default String" 107 */ 108 .matches = { 109 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 110 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"), 111 DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"), 112 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"), 113 }, 114 .driver_data = (void *)&gpd_pocket, 115 }, { /* GPD Win (same note on DMI match as GPD Pocket) */ 116 .matches = { 117 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"), 118 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"), 119 DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"), 120 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"), 121 }, 122 .driver_data = (void *)&gpd_win, 123 }, { /* GPD Win 2 (too generic strings, also match on bios date) */ 124 .matches = { 125 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Default string"), 126 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"), 127 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Default string"), 128 DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"), 129 }, 130 .driver_data = (void *)&gpd_win2, 131 }, { /* I.T.Works TW891 */ 132 .matches = { 133 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."), 134 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"), 135 DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."), 136 DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"), 137 }, 138 .driver_data = (void *)&itworks_tw891, 139 }, { /* 140 * Lenovo Ideapad Miix 310 laptop, only some production batches 141 * have a portrait screen, the resolution checks makes the quirk 142 * apply only to those batches. 143 */ 144 .matches = { 145 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), 146 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"), 147 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"), 148 }, 149 .driver_data = (void *)&lcd800x1280_rightside_up, 150 }, { /* Lenovo Ideapad Miix 320 */ 151 .matches = { 152 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), 153 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"), 154 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"), 155 }, 156 .driver_data = (void *)&lcd800x1280_rightside_up, 157 }, { /* Lenovo Ideapad D330 */ 158 .matches = { 159 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), 160 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "81H3"), 161 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo ideapad D330-10IGM"), 162 }, 163 .driver_data = (void *)&lcd1200x1920_rightside_up, 164 }, { /* VIOS LTH17 */ 165 .matches = { 166 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"), 167 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"), 168 }, 169 .driver_data = (void *)&lcd800x1280_rightside_up, 170 }, 171 {} 172 }; 173 174 /** 175 * drm_get_panel_orientation_quirk - Check for panel orientation quirks 176 * @width: width in pixels of the panel 177 * @height: height in pixels of the panel 178 * 179 * This function checks for platform specific (e.g. DMI based) quirks 180 * providing info on panel_orientation for systems where this cannot be 181 * probed from the hard-/firm-ware. To avoid false-positive this function 182 * takes the panel resolution as argument and checks that against the 183 * resolution expected by the quirk-table entry. 184 * 185 * Note this function is also used outside of the drm-subsys, by for example 186 * the efifb code. Because of this this function gets compiled into its own 187 * kernel-module when built as a module. 188 * 189 * Returns: 190 * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system, 191 * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk. 192 */ 193 int drm_get_panel_orientation_quirk(int width, int height) 194 { 195 const struct dmi_system_id *match; 196 const struct drm_dmi_panel_orientation_data *data; 197 const char *bios_date; 198 int i; 199 200 for (match = dmi_first_match(orientation_data); 201 match; 202 match = dmi_first_match(match + 1)) { 203 data = match->driver_data; 204 205 if (data->width != width || 206 data->height != height) 207 continue; 208 209 if (!data->bios_dates) 210 return data->orientation; 211 212 bios_date = dmi_get_system_info(DMI_BIOS_DATE); 213 if (!bios_date) 214 continue; 215 216 i = match_string(data->bios_dates, -1, bios_date); 217 if (i >= 0) 218 return data->orientation; 219 } 220 221 return DRM_MODE_PANEL_ORIENTATION_UNKNOWN; 222 } 223 EXPORT_SYMBOL(drm_get_panel_orientation_quirk); 224 225 #else 226 227 /* There are no quirks for non x86 devices yet */ 228 int drm_get_panel_orientation_quirk(int width, int height) 229 { 230 return DRM_MODE_PANEL_ORIENTATION_UNKNOWN; 231 } 232 EXPORT_SYMBOL(drm_get_panel_orientation_quirk); 233 234 #endif 235 236 MODULE_LICENSE("Dual MIT/GPL"); 237