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 itworks_tw891 = { 79 .width = 800, 80 .height = 1280, 81 .bios_dates = (const char * const []){ "10/16/2015", NULL }, 82 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 83 }; 84 85 static const struct drm_dmi_panel_orientation_data lcd720x1280_rightside_up = { 86 .width = 720, 87 .height = 1280, 88 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 89 }; 90 91 static const struct drm_dmi_panel_orientation_data lcd800x1280_rightside_up = { 92 .width = 800, 93 .height = 1280, 94 .orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, 95 }; 96 97 static const struct dmi_system_id orientation_data[] = { 98 { /* Acer One 10 (S1003) */ 99 .matches = { 100 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Acer"), 101 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "One S1003"), 102 }, 103 .driver_data = (void *)&acer_s1003, 104 }, { /* Asus T100HA */ 105 .matches = { 106 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), 107 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"), 108 }, 109 .driver_data = (void *)&asus_t100ha, 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 }, { /* Kogan Atlas 2-in-1 D300 */ 162 .matches = { 163 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Kogan"), 164 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "KALAP10D300EA"), 165 }, 166 .driver_data = (void *)&lcd800x1280_rightside_up, 167 }, { /* 168 * Lenovo Ideapad Miix 310 laptop, only some production batches 169 * have a portrait screen, the resolution checks makes the quirk 170 * apply only to those batches. 171 */ 172 .matches = { 173 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), 174 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80SG"), 175 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "MIIX 310-10ICR"), 176 }, 177 .driver_data = (void *)&lcd800x1280_rightside_up, 178 }, { /* Lenovo Ideapad Miix 320 */ 179 .matches = { 180 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), 181 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "80XF"), 182 DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"), 183 }, 184 .driver_data = (void *)&lcd800x1280_rightside_up, 185 }, { /* VIOS LTH17 */ 186 .matches = { 187 DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"), 188 DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"), 189 }, 190 .driver_data = (void *)&lcd800x1280_rightside_up, 191 }, 192 {} 193 }; 194 195 /** 196 * drm_get_panel_orientation_quirk - Check for panel orientation quirks 197 * @width: width in pixels of the panel 198 * @height: height in pixels of the panel 199 * 200 * This function checks for platform specific (e.g. DMI based) quirks 201 * providing info on panel_orientation for systems where this cannot be 202 * probed from the hard-/firm-ware. To avoid false-positive this function 203 * takes the panel resolution as argument and checks that against the 204 * resolution expected by the quirk-table entry. 205 * 206 * Note this function is also used outside of the drm-subsys, by for example 207 * the efifb code. Because of this this function gets compiled into its own 208 * kernel-module when built as a module. 209 * 210 * Returns: 211 * A DRM_MODE_PANEL_ORIENTATION_* value if there is a quirk for this system, 212 * or DRM_MODE_PANEL_ORIENTATION_UNKNOWN if there is no quirk. 213 */ 214 int drm_get_panel_orientation_quirk(int width, int height) 215 { 216 const struct dmi_system_id *match; 217 const struct drm_dmi_panel_orientation_data *data; 218 const char *bios_date; 219 int i; 220 221 for (match = dmi_first_match(orientation_data); 222 match; 223 match = dmi_first_match(match + 1)) { 224 data = match->driver_data; 225 226 if (data->width != width || 227 data->height != height) 228 continue; 229 230 if (!data->bios_dates) 231 return data->orientation; 232 233 bios_date = dmi_get_system_info(DMI_BIOS_DATE); 234 if (!bios_date) 235 continue; 236 237 i = match_string(data->bios_dates, -1, bios_date); 238 if (i >= 0) 239 return data->orientation; 240 } 241 242 return DRM_MODE_PANEL_ORIENTATION_UNKNOWN; 243 } 244 EXPORT_SYMBOL(drm_get_panel_orientation_quirk); 245 246 #else 247 248 /* There are no quirks for non x86 devices yet */ 249 int drm_get_panel_orientation_quirk(int width, int height) 250 { 251 return DRM_MODE_PANEL_ORIENTATION_UNKNOWN; 252 } 253 EXPORT_SYMBOL(drm_get_panel_orientation_quirk); 254 255 #endif 256 257 MODULE_LICENSE("Dual MIT/GPL"); 258