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