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"); 208