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