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1 | /* |
1 | /* |
2 | * Copyright © 1997-2003 by The XFree86 Project, Inc. |
2 | * Copyright © 1997-2003 by The XFree86 Project, Inc. |
3 | * Copyright © 2007 Dave Airlie |
3 | * Copyright © 2007 Dave Airlie |
4 | * Copyright © 2007-2008 Intel Corporation |
4 | * Copyright © 2007-2008 Intel Corporation |
5 | * Jesse Barnes |
5 | * Jesse Barnes |
6 | * Copyright 2005-2006 Luc Verhaegen |
6 | * Copyright 2005-2006 Luc Verhaegen |
7 | * Copyright (c) 2001, Andy Ritger aritger@nvidia.com |
7 | * Copyright (c) 2001, Andy Ritger aritger@nvidia.com |
8 | * |
8 | * |
9 | * Permission is hereby granted, free of charge, to any person obtaining a |
9 | * Permission is hereby granted, free of charge, to any person obtaining a |
10 | * copy of this software and associated documentation files (the "Software"), |
10 | * copy of this software and associated documentation files (the "Software"), |
11 | * to deal in the Software without restriction, including without limitation |
11 | * to deal in the Software without restriction, including without limitation |
12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
13 | * and/or sell copies of the Software, and to permit persons to whom the |
13 | * and/or sell copies of the Software, and to permit persons to whom the |
14 | * Software is furnished to do so, subject to the following conditions: |
14 | * Software is furnished to do so, subject to the following conditions: |
15 | * |
15 | * |
16 | * The above copyright notice and this permission notice shall be included in |
16 | * The above copyright notice and this permission notice shall be included in |
17 | * all copies or substantial portions of the Software. |
17 | * all copies or substantial portions of the Software. |
18 | * |
18 | * |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
22 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
22 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
23 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
23 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
24 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
24 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
25 | * OTHER DEALINGS IN THE SOFTWARE. |
25 | * OTHER DEALINGS IN THE SOFTWARE. |
26 | * |
26 | * |
27 | * Except as contained in this notice, the name of the copyright holder(s) |
27 | * Except as contained in this notice, the name of the copyright holder(s) |
28 | * and author(s) shall not be used in advertising or otherwise to promote |
28 | * and author(s) shall not be used in advertising or otherwise to promote |
29 | * the sale, use or other dealings in this Software without prior written |
29 | * the sale, use or other dealings in this Software without prior written |
30 | * authorization from the copyright holder(s) and author(s). |
30 | * authorization from the copyright holder(s) and author(s). |
31 | */ |
31 | */ |
32 | 32 | ||
33 | #include |
33 | #include |
34 | #include |
34 | #include |
35 | #include |
35 | #include |
36 | #include |
36 | #include |
37 | #include |
37 | #include |
38 | #include |
38 | #include |
39 | #include |
39 | #include |
40 | #include |
40 | #include |
41 | 41 | ||
42 | #include "drm_crtc_internal.h" |
42 | #include "drm_crtc_internal.h" |
43 | 43 | ||
44 | /** |
44 | /** |
45 | * drm_mode_debug_printmodeline - print a mode to dmesg |
45 | * drm_mode_debug_printmodeline - print a mode to dmesg |
46 | * @mode: mode to print |
46 | * @mode: mode to print |
47 | * |
47 | * |
48 | * Describe @mode using DRM_DEBUG. |
48 | * Describe @mode using DRM_DEBUG. |
49 | */ |
49 | */ |
50 | void drm_mode_debug_printmodeline(const struct drm_display_mode *mode) |
50 | void drm_mode_debug_printmodeline(const struct drm_display_mode *mode) |
51 | { |
51 | { |
52 | DRM_DEBUG_KMS("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d " |
52 | DRM_DEBUG_KMS("Modeline %d:\"%s\" %d %d %d %d %d %d %d %d %d %d " |
53 | "0x%x 0x%x\n", |
53 | "0x%x 0x%x\n", |
54 | mode->base.id, mode->name, mode->vrefresh, mode->clock, |
54 | mode->base.id, mode->name, mode->vrefresh, mode->clock, |
55 | mode->hdisplay, mode->hsync_start, |
55 | mode->hdisplay, mode->hsync_start, |
56 | mode->hsync_end, mode->htotal, |
56 | mode->hsync_end, mode->htotal, |
57 | mode->vdisplay, mode->vsync_start, |
57 | mode->vdisplay, mode->vsync_start, |
58 | mode->vsync_end, mode->vtotal, mode->type, mode->flags); |
58 | mode->vsync_end, mode->vtotal, mode->type, mode->flags); |
59 | } |
59 | } |
60 | EXPORT_SYMBOL(drm_mode_debug_printmodeline); |
60 | EXPORT_SYMBOL(drm_mode_debug_printmodeline); |
61 | 61 | ||
62 | /** |
62 | /** |
63 | * drm_mode_create - create a new display mode |
63 | * drm_mode_create - create a new display mode |
64 | * @dev: DRM device |
64 | * @dev: DRM device |
65 | * |
65 | * |
66 | * Create a new, cleared drm_display_mode with kzalloc, allocate an ID for it |
66 | * Create a new, cleared drm_display_mode with kzalloc, allocate an ID for it |
67 | * and return it. |
67 | * and return it. |
68 | * |
68 | * |
69 | * Returns: |
69 | * Returns: |
70 | * Pointer to new mode on success, NULL on error. |
70 | * Pointer to new mode on success, NULL on error. |
71 | */ |
71 | */ |
72 | struct drm_display_mode *drm_mode_create(struct drm_device *dev) |
72 | struct drm_display_mode *drm_mode_create(struct drm_device *dev) |
73 | { |
73 | { |
74 | struct drm_display_mode *nmode; |
74 | struct drm_display_mode *nmode; |
75 | 75 | ||
76 | nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); |
76 | nmode = kzalloc(sizeof(struct drm_display_mode), GFP_KERNEL); |
77 | if (!nmode) |
77 | if (!nmode) |
78 | return NULL; |
78 | return NULL; |
79 | 79 | ||
80 | if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { |
80 | if (drm_mode_object_get(dev, &nmode->base, DRM_MODE_OBJECT_MODE)) { |
81 | kfree(nmode); |
81 | kfree(nmode); |
82 | return NULL; |
82 | return NULL; |
83 | } |
83 | } |
84 | 84 | ||
85 | return nmode; |
85 | return nmode; |
86 | } |
86 | } |
87 | EXPORT_SYMBOL(drm_mode_create); |
87 | EXPORT_SYMBOL(drm_mode_create); |
88 | 88 | ||
89 | /** |
89 | /** |
90 | * drm_mode_destroy - remove a mode |
90 | * drm_mode_destroy - remove a mode |
91 | * @dev: DRM device |
91 | * @dev: DRM device |
92 | * @mode: mode to remove |
92 | * @mode: mode to remove |
93 | * |
93 | * |
94 | * Release @mode's unique ID, then free it @mode structure itself using kfree. |
94 | * Release @mode's unique ID, then free it @mode structure itself using kfree. |
95 | */ |
95 | */ |
96 | void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) |
96 | void drm_mode_destroy(struct drm_device *dev, struct drm_display_mode *mode) |
97 | { |
97 | { |
98 | if (!mode) |
98 | if (!mode) |
99 | return; |
99 | return; |
100 | 100 | ||
101 | drm_mode_object_put(dev, &mode->base); |
101 | drm_mode_object_put(dev, &mode->base); |
102 | 102 | ||
103 | kfree(mode); |
103 | kfree(mode); |
104 | } |
104 | } |
105 | EXPORT_SYMBOL(drm_mode_destroy); |
105 | EXPORT_SYMBOL(drm_mode_destroy); |
106 | 106 | ||
107 | /** |
107 | /** |
108 | * drm_mode_probed_add - add a mode to a connector's probed_mode list |
108 | * drm_mode_probed_add - add a mode to a connector's probed_mode list |
109 | * @connector: connector the new mode |
109 | * @connector: connector the new mode |
110 | * @mode: mode data |
110 | * @mode: mode data |
111 | * |
111 | * |
112 | * Add @mode to @connector's probed_mode list for later use. This list should |
112 | * Add @mode to @connector's probed_mode list for later use. This list should |
113 | * then in a second step get filtered and all the modes actually supported by |
113 | * then in a second step get filtered and all the modes actually supported by |
114 | * the hardware moved to the @connector's modes list. |
114 | * the hardware moved to the @connector's modes list. |
115 | */ |
115 | */ |
116 | void drm_mode_probed_add(struct drm_connector *connector, |
116 | void drm_mode_probed_add(struct drm_connector *connector, |
117 | struct drm_display_mode *mode) |
117 | struct drm_display_mode *mode) |
118 | { |
118 | { |
119 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
119 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
120 | 120 | ||
121 | list_add_tail(&mode->head, &connector->probed_modes); |
121 | list_add_tail(&mode->head, &connector->probed_modes); |
122 | } |
122 | } |
123 | EXPORT_SYMBOL(drm_mode_probed_add); |
123 | EXPORT_SYMBOL(drm_mode_probed_add); |
124 | 124 | ||
125 | /** |
125 | /** |
126 | * drm_cvt_mode -create a modeline based on the CVT algorithm |
126 | * drm_cvt_mode -create a modeline based on the CVT algorithm |
127 | * @dev: drm device |
127 | * @dev: drm device |
128 | * @hdisplay: hdisplay size |
128 | * @hdisplay: hdisplay size |
129 | * @vdisplay: vdisplay size |
129 | * @vdisplay: vdisplay size |
130 | * @vrefresh: vrefresh rate |
130 | * @vrefresh: vrefresh rate |
131 | * @reduced: whether to use reduced blanking |
131 | * @reduced: whether to use reduced blanking |
132 | * @interlaced: whether to compute an interlaced mode |
132 | * @interlaced: whether to compute an interlaced mode |
133 | * @margins: whether to add margins (borders) |
133 | * @margins: whether to add margins (borders) |
134 | * |
134 | * |
135 | * This function is called to generate the modeline based on CVT algorithm |
135 | * This function is called to generate the modeline based on CVT algorithm |
136 | * according to the hdisplay, vdisplay, vrefresh. |
136 | * according to the hdisplay, vdisplay, vrefresh. |
137 | * It is based from the VESA(TM) Coordinated Video Timing Generator by |
137 | * It is based from the VESA(TM) Coordinated Video Timing Generator by |
138 | * Graham Loveridge April 9, 2003 available at |
138 | * Graham Loveridge April 9, 2003 available at |
139 | * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls |
139 | * http://www.elo.utfsm.cl/~elo212/docs/CVTd6r1.xls |
140 | * |
140 | * |
141 | * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. |
141 | * And it is copied from xf86CVTmode in xserver/hw/xfree86/modes/xf86cvt.c. |
142 | * What I have done is to translate it by using integer calculation. |
142 | * What I have done is to translate it by using integer calculation. |
143 | * |
143 | * |
144 | * Returns: |
144 | * Returns: |
145 | * The modeline based on the CVT algorithm stored in a drm_display_mode object. |
145 | * The modeline based on the CVT algorithm stored in a drm_display_mode object. |
146 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
146 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
147 | * when no mode could be allocated. |
147 | * when no mode could be allocated. |
148 | */ |
148 | */ |
149 | struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, |
149 | struct drm_display_mode *drm_cvt_mode(struct drm_device *dev, int hdisplay, |
150 | int vdisplay, int vrefresh, |
150 | int vdisplay, int vrefresh, |
151 | bool reduced, bool interlaced, bool margins) |
151 | bool reduced, bool interlaced, bool margins) |
152 | { |
152 | { |
153 | #define HV_FACTOR 1000 |
153 | #define HV_FACTOR 1000 |
154 | /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
154 | /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
155 | #define CVT_MARGIN_PERCENTAGE 18 |
155 | #define CVT_MARGIN_PERCENTAGE 18 |
156 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
156 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
157 | #define CVT_H_GRANULARITY 8 |
157 | #define CVT_H_GRANULARITY 8 |
158 | /* 3) Minimum vertical porch (lines) - default 3 */ |
158 | /* 3) Minimum vertical porch (lines) - default 3 */ |
159 | #define CVT_MIN_V_PORCH 3 |
159 | #define CVT_MIN_V_PORCH 3 |
160 | /* 4) Minimum number of vertical back porch lines - default 6 */ |
160 | /* 4) Minimum number of vertical back porch lines - default 6 */ |
161 | #define CVT_MIN_V_BPORCH 6 |
161 | #define CVT_MIN_V_BPORCH 6 |
162 | /* Pixel Clock step (kHz) */ |
162 | /* Pixel Clock step (kHz) */ |
163 | #define CVT_CLOCK_STEP 250 |
163 | #define CVT_CLOCK_STEP 250 |
164 | struct drm_display_mode *drm_mode; |
164 | struct drm_display_mode *drm_mode; |
165 | unsigned int vfieldrate, hperiod; |
165 | unsigned int vfieldrate, hperiod; |
166 | int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync; |
166 | int hdisplay_rnd, hmargin, vdisplay_rnd, vmargin, vsync; |
167 | int interlace; |
167 | int interlace; |
168 | 168 | ||
169 | /* allocate the drm_display_mode structure. If failure, we will |
169 | /* allocate the drm_display_mode structure. If failure, we will |
170 | * return directly |
170 | * return directly |
171 | */ |
171 | */ |
172 | drm_mode = drm_mode_create(dev); |
172 | drm_mode = drm_mode_create(dev); |
173 | if (!drm_mode) |
173 | if (!drm_mode) |
174 | return NULL; |
174 | return NULL; |
175 | 175 | ||
176 | /* the CVT default refresh rate is 60Hz */ |
176 | /* the CVT default refresh rate is 60Hz */ |
177 | if (!vrefresh) |
177 | if (!vrefresh) |
178 | vrefresh = 60; |
178 | vrefresh = 60; |
179 | 179 | ||
180 | /* the required field fresh rate */ |
180 | /* the required field fresh rate */ |
181 | if (interlaced) |
181 | if (interlaced) |
182 | vfieldrate = vrefresh * 2; |
182 | vfieldrate = vrefresh * 2; |
183 | else |
183 | else |
184 | vfieldrate = vrefresh; |
184 | vfieldrate = vrefresh; |
185 | 185 | ||
186 | /* horizontal pixels */ |
186 | /* horizontal pixels */ |
187 | hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY); |
187 | hdisplay_rnd = hdisplay - (hdisplay % CVT_H_GRANULARITY); |
188 | 188 | ||
189 | /* determine the left&right borders */ |
189 | /* determine the left&right borders */ |
190 | hmargin = 0; |
190 | hmargin = 0; |
191 | if (margins) { |
191 | if (margins) { |
192 | hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
192 | hmargin = hdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
193 | hmargin -= hmargin % CVT_H_GRANULARITY; |
193 | hmargin -= hmargin % CVT_H_GRANULARITY; |
194 | } |
194 | } |
195 | /* find the total active pixels */ |
195 | /* find the total active pixels */ |
196 | drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin; |
196 | drm_mode->hdisplay = hdisplay_rnd + 2 * hmargin; |
197 | 197 | ||
198 | /* find the number of lines per field */ |
198 | /* find the number of lines per field */ |
199 | if (interlaced) |
199 | if (interlaced) |
200 | vdisplay_rnd = vdisplay / 2; |
200 | vdisplay_rnd = vdisplay / 2; |
201 | else |
201 | else |
202 | vdisplay_rnd = vdisplay; |
202 | vdisplay_rnd = vdisplay; |
203 | 203 | ||
204 | /* find the top & bottom borders */ |
204 | /* find the top & bottom borders */ |
205 | vmargin = 0; |
205 | vmargin = 0; |
206 | if (margins) |
206 | if (margins) |
207 | vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
207 | vmargin = vdisplay_rnd * CVT_MARGIN_PERCENTAGE / 1000; |
208 | 208 | ||
209 | drm_mode->vdisplay = vdisplay + 2 * vmargin; |
209 | drm_mode->vdisplay = vdisplay + 2 * vmargin; |
210 | 210 | ||
211 | /* Interlaced */ |
211 | /* Interlaced */ |
212 | if (interlaced) |
212 | if (interlaced) |
213 | interlace = 1; |
213 | interlace = 1; |
214 | else |
214 | else |
215 | interlace = 0; |
215 | interlace = 0; |
216 | 216 | ||
217 | /* Determine VSync Width from aspect ratio */ |
217 | /* Determine VSync Width from aspect ratio */ |
218 | if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay)) |
218 | if (!(vdisplay % 3) && ((vdisplay * 4 / 3) == hdisplay)) |
219 | vsync = 4; |
219 | vsync = 4; |
220 | else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay)) |
220 | else if (!(vdisplay % 9) && ((vdisplay * 16 / 9) == hdisplay)) |
221 | vsync = 5; |
221 | vsync = 5; |
222 | else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay)) |
222 | else if (!(vdisplay % 10) && ((vdisplay * 16 / 10) == hdisplay)) |
223 | vsync = 6; |
223 | vsync = 6; |
224 | else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay)) |
224 | else if (!(vdisplay % 4) && ((vdisplay * 5 / 4) == hdisplay)) |
225 | vsync = 7; |
225 | vsync = 7; |
226 | else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay)) |
226 | else if (!(vdisplay % 9) && ((vdisplay * 15 / 9) == hdisplay)) |
227 | vsync = 7; |
227 | vsync = 7; |
228 | else /* custom */ |
228 | else /* custom */ |
229 | vsync = 10; |
229 | vsync = 10; |
230 | 230 | ||
231 | if (!reduced) { |
231 | if (!reduced) { |
232 | /* simplify the GTF calculation */ |
232 | /* simplify the GTF calculation */ |
233 | /* 4) Minimum time of vertical sync + back porch interval (µs) |
233 | /* 4) Minimum time of vertical sync + back porch interval (µs) |
234 | * default 550.0 |
234 | * default 550.0 |
235 | */ |
235 | */ |
236 | int tmp1, tmp2; |
236 | int tmp1, tmp2; |
237 | #define CVT_MIN_VSYNC_BP 550 |
237 | #define CVT_MIN_VSYNC_BP 550 |
238 | /* 3) Nominal HSync width (% of line period) - default 8 */ |
238 | /* 3) Nominal HSync width (% of line period) - default 8 */ |
239 | #define CVT_HSYNC_PERCENTAGE 8 |
239 | #define CVT_HSYNC_PERCENTAGE 8 |
240 | unsigned int hblank_percentage; |
240 | unsigned int hblank_percentage; |
241 | int vsyncandback_porch, vback_porch, hblank; |
241 | int vsyncandback_porch, vback_porch, hblank; |
242 | 242 | ||
243 | /* estimated the horizontal period */ |
243 | /* estimated the horizontal period */ |
244 | tmp1 = HV_FACTOR * 1000000 - |
244 | tmp1 = HV_FACTOR * 1000000 - |
245 | CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate; |
245 | CVT_MIN_VSYNC_BP * HV_FACTOR * vfieldrate; |
246 | tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 + |
246 | tmp2 = (vdisplay_rnd + 2 * vmargin + CVT_MIN_V_PORCH) * 2 + |
247 | interlace; |
247 | interlace; |
248 | hperiod = tmp1 * 2 / (tmp2 * vfieldrate); |
248 | hperiod = tmp1 * 2 / (tmp2 * vfieldrate); |
249 | 249 | ||
250 | tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1; |
250 | tmp1 = CVT_MIN_VSYNC_BP * HV_FACTOR / hperiod + 1; |
251 | /* 9. Find number of lines in sync + backporch */ |
251 | /* 9. Find number of lines in sync + backporch */ |
252 | if (tmp1 < (vsync + CVT_MIN_V_PORCH)) |
252 | if (tmp1 < (vsync + CVT_MIN_V_PORCH)) |
253 | vsyncandback_porch = vsync + CVT_MIN_V_PORCH; |
253 | vsyncandback_porch = vsync + CVT_MIN_V_PORCH; |
254 | else |
254 | else |
255 | vsyncandback_porch = tmp1; |
255 | vsyncandback_porch = tmp1; |
256 | /* 10. Find number of lines in back porch */ |
256 | /* 10. Find number of lines in back porch */ |
257 | vback_porch = vsyncandback_porch - vsync; |
257 | vback_porch = vsyncandback_porch - vsync; |
258 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + |
258 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + |
259 | vsyncandback_porch + CVT_MIN_V_PORCH; |
259 | vsyncandback_porch + CVT_MIN_V_PORCH; |
260 | /* 5) Definition of Horizontal blanking time limitation */ |
260 | /* 5) Definition of Horizontal blanking time limitation */ |
261 | /* Gradient (%/kHz) - default 600 */ |
261 | /* Gradient (%/kHz) - default 600 */ |
262 | #define CVT_M_FACTOR 600 |
262 | #define CVT_M_FACTOR 600 |
263 | /* Offset (%) - default 40 */ |
263 | /* Offset (%) - default 40 */ |
264 | #define CVT_C_FACTOR 40 |
264 | #define CVT_C_FACTOR 40 |
265 | /* Blanking time scaling factor - default 128 */ |
265 | /* Blanking time scaling factor - default 128 */ |
266 | #define CVT_K_FACTOR 128 |
266 | #define CVT_K_FACTOR 128 |
267 | /* Scaling factor weighting - default 20 */ |
267 | /* Scaling factor weighting - default 20 */ |
268 | #define CVT_J_FACTOR 20 |
268 | #define CVT_J_FACTOR 20 |
269 | #define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256) |
269 | #define CVT_M_PRIME (CVT_M_FACTOR * CVT_K_FACTOR / 256) |
270 | #define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \ |
270 | #define CVT_C_PRIME ((CVT_C_FACTOR - CVT_J_FACTOR) * CVT_K_FACTOR / 256 + \ |
271 | CVT_J_FACTOR) |
271 | CVT_J_FACTOR) |
272 | /* 12. Find ideal blanking duty cycle from formula */ |
272 | /* 12. Find ideal blanking duty cycle from formula */ |
273 | hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME * |
273 | hblank_percentage = CVT_C_PRIME * HV_FACTOR - CVT_M_PRIME * |
274 | hperiod / 1000; |
274 | hperiod / 1000; |
275 | /* 13. Blanking time */ |
275 | /* 13. Blanking time */ |
276 | if (hblank_percentage < 20 * HV_FACTOR) |
276 | if (hblank_percentage < 20 * HV_FACTOR) |
277 | hblank_percentage = 20 * HV_FACTOR; |
277 | hblank_percentage = 20 * HV_FACTOR; |
278 | hblank = drm_mode->hdisplay * hblank_percentage / |
278 | hblank = drm_mode->hdisplay * hblank_percentage / |
279 | (100 * HV_FACTOR - hblank_percentage); |
279 | (100 * HV_FACTOR - hblank_percentage); |
280 | hblank -= hblank % (2 * CVT_H_GRANULARITY); |
280 | hblank -= hblank % (2 * CVT_H_GRANULARITY); |
281 | /* 14. find the total pixels per line */ |
281 | /* 14. find the total pixels per line */ |
282 | drm_mode->htotal = drm_mode->hdisplay + hblank; |
282 | drm_mode->htotal = drm_mode->hdisplay + hblank; |
283 | drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2; |
283 | drm_mode->hsync_end = drm_mode->hdisplay + hblank / 2; |
284 | drm_mode->hsync_start = drm_mode->hsync_end - |
284 | drm_mode->hsync_start = drm_mode->hsync_end - |
285 | (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100; |
285 | (drm_mode->htotal * CVT_HSYNC_PERCENTAGE) / 100; |
286 | drm_mode->hsync_start += CVT_H_GRANULARITY - |
286 | drm_mode->hsync_start += CVT_H_GRANULARITY - |
287 | drm_mode->hsync_start % CVT_H_GRANULARITY; |
287 | drm_mode->hsync_start % CVT_H_GRANULARITY; |
288 | /* fill the Vsync values */ |
288 | /* fill the Vsync values */ |
289 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH; |
289 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_MIN_V_PORCH; |
290 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
290 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
291 | } else { |
291 | } else { |
292 | /* Reduced blanking */ |
292 | /* Reduced blanking */ |
293 | /* Minimum vertical blanking interval time (µs)- default 460 */ |
293 | /* Minimum vertical blanking interval time (µs)- default 460 */ |
294 | #define CVT_RB_MIN_VBLANK 460 |
294 | #define CVT_RB_MIN_VBLANK 460 |
295 | /* Fixed number of clocks for horizontal sync */ |
295 | /* Fixed number of clocks for horizontal sync */ |
296 | #define CVT_RB_H_SYNC 32 |
296 | #define CVT_RB_H_SYNC 32 |
297 | /* Fixed number of clocks for horizontal blanking */ |
297 | /* Fixed number of clocks for horizontal blanking */ |
298 | #define CVT_RB_H_BLANK 160 |
298 | #define CVT_RB_H_BLANK 160 |
299 | /* Fixed number of lines for vertical front porch - default 3*/ |
299 | /* Fixed number of lines for vertical front porch - default 3*/ |
300 | #define CVT_RB_VFPORCH 3 |
300 | #define CVT_RB_VFPORCH 3 |
301 | int vbilines; |
301 | int vbilines; |
302 | int tmp1, tmp2; |
302 | int tmp1, tmp2; |
303 | /* 8. Estimate Horizontal period. */ |
303 | /* 8. Estimate Horizontal period. */ |
304 | tmp1 = HV_FACTOR * 1000000 - |
304 | tmp1 = HV_FACTOR * 1000000 - |
305 | CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate; |
305 | CVT_RB_MIN_VBLANK * HV_FACTOR * vfieldrate; |
306 | tmp2 = vdisplay_rnd + 2 * vmargin; |
306 | tmp2 = vdisplay_rnd + 2 * vmargin; |
307 | hperiod = tmp1 / (tmp2 * vfieldrate); |
307 | hperiod = tmp1 / (tmp2 * vfieldrate); |
308 | /* 9. Find number of lines in vertical blanking */ |
308 | /* 9. Find number of lines in vertical blanking */ |
309 | vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1; |
309 | vbilines = CVT_RB_MIN_VBLANK * HV_FACTOR / hperiod + 1; |
310 | /* 10. Check if vertical blanking is sufficient */ |
310 | /* 10. Check if vertical blanking is sufficient */ |
311 | if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH)) |
311 | if (vbilines < (CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH)) |
312 | vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH; |
312 | vbilines = CVT_RB_VFPORCH + vsync + CVT_MIN_V_BPORCH; |
313 | /* 11. Find total number of lines in vertical field */ |
313 | /* 11. Find total number of lines in vertical field */ |
314 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines; |
314 | drm_mode->vtotal = vdisplay_rnd + 2 * vmargin + vbilines; |
315 | /* 12. Find total number of pixels in a line */ |
315 | /* 12. Find total number of pixels in a line */ |
316 | drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK; |
316 | drm_mode->htotal = drm_mode->hdisplay + CVT_RB_H_BLANK; |
317 | /* Fill in HSync values */ |
317 | /* Fill in HSync values */ |
318 | drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2; |
318 | drm_mode->hsync_end = drm_mode->hdisplay + CVT_RB_H_BLANK / 2; |
319 | drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC; |
319 | drm_mode->hsync_start = drm_mode->hsync_end - CVT_RB_H_SYNC; |
320 | /* Fill in VSync values */ |
320 | /* Fill in VSync values */ |
321 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH; |
321 | drm_mode->vsync_start = drm_mode->vdisplay + CVT_RB_VFPORCH; |
322 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
322 | drm_mode->vsync_end = drm_mode->vsync_start + vsync; |
323 | } |
323 | } |
324 | /* 15/13. Find pixel clock frequency (kHz for xf86) */ |
324 | /* 15/13. Find pixel clock frequency (kHz for xf86) */ |
325 | drm_mode->clock = drm_mode->htotal * HV_FACTOR * 1000 / hperiod; |
325 | drm_mode->clock = drm_mode->htotal * HV_FACTOR * 1000 / hperiod; |
326 | drm_mode->clock -= drm_mode->clock % CVT_CLOCK_STEP; |
326 | drm_mode->clock -= drm_mode->clock % CVT_CLOCK_STEP; |
327 | /* 18/16. Find actual vertical frame frequency */ |
327 | /* 18/16. Find actual vertical frame frequency */ |
328 | /* ignore - just set the mode flag for interlaced */ |
328 | /* ignore - just set the mode flag for interlaced */ |
329 | if (interlaced) { |
329 | if (interlaced) { |
330 | drm_mode->vtotal *= 2; |
330 | drm_mode->vtotal *= 2; |
331 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
331 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
332 | } |
332 | } |
333 | /* Fill the mode line name */ |
333 | /* Fill the mode line name */ |
334 | drm_mode_set_name(drm_mode); |
334 | drm_mode_set_name(drm_mode); |
335 | if (reduced) |
335 | if (reduced) |
336 | drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC | |
336 | drm_mode->flags |= (DRM_MODE_FLAG_PHSYNC | |
337 | DRM_MODE_FLAG_NVSYNC); |
337 | DRM_MODE_FLAG_NVSYNC); |
338 | else |
338 | else |
339 | drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | |
339 | drm_mode->flags |= (DRM_MODE_FLAG_PVSYNC | |
340 | DRM_MODE_FLAG_NHSYNC); |
340 | DRM_MODE_FLAG_NHSYNC); |
341 | 341 | ||
342 | return drm_mode; |
342 | return drm_mode; |
343 | } |
343 | } |
344 | EXPORT_SYMBOL(drm_cvt_mode); |
344 | EXPORT_SYMBOL(drm_cvt_mode); |
345 | 345 | ||
346 | /** |
346 | /** |
347 | * drm_gtf_mode_complex - create the modeline based on the full GTF algorithm |
347 | * drm_gtf_mode_complex - create the modeline based on the full GTF algorithm |
348 | * @dev: drm device |
348 | * @dev: drm device |
349 | * @hdisplay: hdisplay size |
349 | * @hdisplay: hdisplay size |
350 | * @vdisplay: vdisplay size |
350 | * @vdisplay: vdisplay size |
351 | * @vrefresh: vrefresh rate. |
351 | * @vrefresh: vrefresh rate. |
352 | * @interlaced: whether to compute an interlaced mode |
352 | * @interlaced: whether to compute an interlaced mode |
353 | * @margins: desired margin (borders) size |
353 | * @margins: desired margin (borders) size |
354 | * @GTF_M: extended GTF formula parameters |
354 | * @GTF_M: extended GTF formula parameters |
355 | * @GTF_2C: extended GTF formula parameters |
355 | * @GTF_2C: extended GTF formula parameters |
356 | * @GTF_K: extended GTF formula parameters |
356 | * @GTF_K: extended GTF formula parameters |
357 | * @GTF_2J: extended GTF formula parameters |
357 | * @GTF_2J: extended GTF formula parameters |
358 | * |
358 | * |
359 | * GTF feature blocks specify C and J in multiples of 0.5, so we pass them |
359 | * GTF feature blocks specify C and J in multiples of 0.5, so we pass them |
360 | * in here multiplied by two. For a C of 40, pass in 80. |
360 | * in here multiplied by two. For a C of 40, pass in 80. |
361 | * |
361 | * |
362 | * Returns: |
362 | * Returns: |
363 | * The modeline based on the full GTF algorithm stored in a drm_display_mode object. |
363 | * The modeline based on the full GTF algorithm stored in a drm_display_mode object. |
364 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
364 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
365 | * when no mode could be allocated. |
365 | * when no mode could be allocated. |
366 | */ |
366 | */ |
367 | struct drm_display_mode * |
367 | struct drm_display_mode * |
368 | drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay, |
368 | drm_gtf_mode_complex(struct drm_device *dev, int hdisplay, int vdisplay, |
369 | int vrefresh, bool interlaced, int margins, |
369 | int vrefresh, bool interlaced, int margins, |
370 | int GTF_M, int GTF_2C, int GTF_K, int GTF_2J) |
370 | int GTF_M, int GTF_2C, int GTF_K, int GTF_2J) |
371 | { /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
371 | { /* 1) top/bottom margin size (% of height) - default: 1.8, */ |
372 | #define GTF_MARGIN_PERCENTAGE 18 |
372 | #define GTF_MARGIN_PERCENTAGE 18 |
373 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
373 | /* 2) character cell horizontal granularity (pixels) - default 8 */ |
374 | #define GTF_CELL_GRAN 8 |
374 | #define GTF_CELL_GRAN 8 |
375 | /* 3) Minimum vertical porch (lines) - default 3 */ |
375 | /* 3) Minimum vertical porch (lines) - default 3 */ |
376 | #define GTF_MIN_V_PORCH 1 |
376 | #define GTF_MIN_V_PORCH 1 |
377 | /* width of vsync in lines */ |
377 | /* width of vsync in lines */ |
378 | #define V_SYNC_RQD 3 |
378 | #define V_SYNC_RQD 3 |
379 | /* width of hsync as % of total line */ |
379 | /* width of hsync as % of total line */ |
380 | #define H_SYNC_PERCENT 8 |
380 | #define H_SYNC_PERCENT 8 |
381 | /* min time of vsync + back porch (microsec) */ |
381 | /* min time of vsync + back porch (microsec) */ |
382 | #define MIN_VSYNC_PLUS_BP 550 |
382 | #define MIN_VSYNC_PLUS_BP 550 |
383 | /* C' and M' are part of the Blanking Duty Cycle computation */ |
383 | /* C' and M' are part of the Blanking Duty Cycle computation */ |
384 | #define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2) |
384 | #define GTF_C_PRIME ((((GTF_2C - GTF_2J) * GTF_K / 256) + GTF_2J) / 2) |
385 | #define GTF_M_PRIME (GTF_K * GTF_M / 256) |
385 | #define GTF_M_PRIME (GTF_K * GTF_M / 256) |
386 | struct drm_display_mode *drm_mode; |
386 | struct drm_display_mode *drm_mode; |
387 | unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd; |
387 | unsigned int hdisplay_rnd, vdisplay_rnd, vfieldrate_rqd; |
388 | int top_margin, bottom_margin; |
388 | int top_margin, bottom_margin; |
389 | int interlace; |
389 | int interlace; |
390 | unsigned int hfreq_est; |
390 | unsigned int hfreq_est; |
391 | int vsync_plus_bp, vback_porch; |
391 | int vsync_plus_bp, vback_porch; |
392 | unsigned int vtotal_lines, vfieldrate_est, hperiod; |
392 | unsigned int vtotal_lines, vfieldrate_est, hperiod; |
393 | unsigned int vfield_rate, vframe_rate; |
393 | unsigned int vfield_rate, vframe_rate; |
394 | int left_margin, right_margin; |
394 | int left_margin, right_margin; |
395 | unsigned int total_active_pixels, ideal_duty_cycle; |
395 | unsigned int total_active_pixels, ideal_duty_cycle; |
396 | unsigned int hblank, total_pixels, pixel_freq; |
396 | unsigned int hblank, total_pixels, pixel_freq; |
397 | int hsync, hfront_porch, vodd_front_porch_lines; |
397 | int hsync, hfront_porch, vodd_front_porch_lines; |
398 | unsigned int tmp1, tmp2; |
398 | unsigned int tmp1, tmp2; |
399 | 399 | ||
400 | drm_mode = drm_mode_create(dev); |
400 | drm_mode = drm_mode_create(dev); |
401 | if (!drm_mode) |
401 | if (!drm_mode) |
402 | return NULL; |
402 | return NULL; |
403 | 403 | ||
404 | /* 1. In order to give correct results, the number of horizontal |
404 | /* 1. In order to give correct results, the number of horizontal |
405 | * pixels requested is first processed to ensure that it is divisible |
405 | * pixels requested is first processed to ensure that it is divisible |
406 | * by the character size, by rounding it to the nearest character |
406 | * by the character size, by rounding it to the nearest character |
407 | * cell boundary: |
407 | * cell boundary: |
408 | */ |
408 | */ |
409 | hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
409 | hdisplay_rnd = (hdisplay + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
410 | hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN; |
410 | hdisplay_rnd = hdisplay_rnd * GTF_CELL_GRAN; |
411 | 411 | ||
412 | /* 2. If interlace is requested, the number of vertical lines assumed |
412 | /* 2. If interlace is requested, the number of vertical lines assumed |
413 | * by the calculation must be halved, as the computation calculates |
413 | * by the calculation must be halved, as the computation calculates |
414 | * the number of vertical lines per field. |
414 | * the number of vertical lines per field. |
415 | */ |
415 | */ |
416 | if (interlaced) |
416 | if (interlaced) |
417 | vdisplay_rnd = vdisplay / 2; |
417 | vdisplay_rnd = vdisplay / 2; |
418 | else |
418 | else |
419 | vdisplay_rnd = vdisplay; |
419 | vdisplay_rnd = vdisplay; |
420 | 420 | ||
421 | /* 3. Find the frame rate required: */ |
421 | /* 3. Find the frame rate required: */ |
422 | if (interlaced) |
422 | if (interlaced) |
423 | vfieldrate_rqd = vrefresh * 2; |
423 | vfieldrate_rqd = vrefresh * 2; |
424 | else |
424 | else |
425 | vfieldrate_rqd = vrefresh; |
425 | vfieldrate_rqd = vrefresh; |
426 | 426 | ||
427 | /* 4. Find number of lines in Top margin: */ |
427 | /* 4. Find number of lines in Top margin: */ |
428 | top_margin = 0; |
428 | top_margin = 0; |
429 | if (margins) |
429 | if (margins) |
430 | top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
430 | top_margin = (vdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
431 | 1000; |
431 | 1000; |
432 | /* 5. Find number of lines in bottom margin: */ |
432 | /* 5. Find number of lines in bottom margin: */ |
433 | bottom_margin = top_margin; |
433 | bottom_margin = top_margin; |
434 | 434 | ||
435 | /* 6. If interlace is required, then set variable interlace: */ |
435 | /* 6. If interlace is required, then set variable interlace: */ |
436 | if (interlaced) |
436 | if (interlaced) |
437 | interlace = 1; |
437 | interlace = 1; |
438 | else |
438 | else |
439 | interlace = 0; |
439 | interlace = 0; |
440 | 440 | ||
441 | /* 7. Estimate the Horizontal frequency */ |
441 | /* 7. Estimate the Horizontal frequency */ |
442 | { |
442 | { |
443 | tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; |
443 | tmp1 = (1000000 - MIN_VSYNC_PLUS_BP * vfieldrate_rqd) / 500; |
444 | tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) * |
444 | tmp2 = (vdisplay_rnd + 2 * top_margin + GTF_MIN_V_PORCH) * |
445 | 2 + interlace; |
445 | 2 + interlace; |
446 | hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1; |
446 | hfreq_est = (tmp2 * 1000 * vfieldrate_rqd) / tmp1; |
447 | } |
447 | } |
448 | 448 | ||
449 | /* 8. Find the number of lines in V sync + back porch */ |
449 | /* 8. Find the number of lines in V sync + back porch */ |
450 | /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */ |
450 | /* [V SYNC+BP] = RINT(([MIN VSYNC+BP] * hfreq_est / 1000000)) */ |
451 | vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000; |
451 | vsync_plus_bp = MIN_VSYNC_PLUS_BP * hfreq_est / 1000; |
452 | vsync_plus_bp = (vsync_plus_bp + 500) / 1000; |
452 | vsync_plus_bp = (vsync_plus_bp + 500) / 1000; |
453 | /* 9. Find the number of lines in V back porch alone: */ |
453 | /* 9. Find the number of lines in V back porch alone: */ |
454 | vback_porch = vsync_plus_bp - V_SYNC_RQD; |
454 | vback_porch = vsync_plus_bp - V_SYNC_RQD; |
455 | /* 10. Find the total number of lines in Vertical field period: */ |
455 | /* 10. Find the total number of lines in Vertical field period: */ |
456 | vtotal_lines = vdisplay_rnd + top_margin + bottom_margin + |
456 | vtotal_lines = vdisplay_rnd + top_margin + bottom_margin + |
457 | vsync_plus_bp + GTF_MIN_V_PORCH; |
457 | vsync_plus_bp + GTF_MIN_V_PORCH; |
458 | /* 11. Estimate the Vertical field frequency: */ |
458 | /* 11. Estimate the Vertical field frequency: */ |
459 | vfieldrate_est = hfreq_est / vtotal_lines; |
459 | vfieldrate_est = hfreq_est / vtotal_lines; |
460 | /* 12. Find the actual horizontal period: */ |
460 | /* 12. Find the actual horizontal period: */ |
461 | hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines); |
461 | hperiod = 1000000 / (vfieldrate_rqd * vtotal_lines); |
462 | 462 | ||
463 | /* 13. Find the actual Vertical field frequency: */ |
463 | /* 13. Find the actual Vertical field frequency: */ |
464 | vfield_rate = hfreq_est / vtotal_lines; |
464 | vfield_rate = hfreq_est / vtotal_lines; |
465 | /* 14. Find the Vertical frame frequency: */ |
465 | /* 14. Find the Vertical frame frequency: */ |
466 | if (interlaced) |
466 | if (interlaced) |
467 | vframe_rate = vfield_rate / 2; |
467 | vframe_rate = vfield_rate / 2; |
468 | else |
468 | else |
469 | vframe_rate = vfield_rate; |
469 | vframe_rate = vfield_rate; |
470 | /* 15. Find number of pixels in left margin: */ |
470 | /* 15. Find number of pixels in left margin: */ |
471 | if (margins) |
471 | if (margins) |
472 | left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
472 | left_margin = (hdisplay_rnd * GTF_MARGIN_PERCENTAGE + 500) / |
473 | 1000; |
473 | 1000; |
474 | else |
474 | else |
475 | left_margin = 0; |
475 | left_margin = 0; |
476 | 476 | ||
477 | /* 16.Find number of pixels in right margin: */ |
477 | /* 16.Find number of pixels in right margin: */ |
478 | right_margin = left_margin; |
478 | right_margin = left_margin; |
479 | /* 17.Find total number of active pixels in image and left and right */ |
479 | /* 17.Find total number of active pixels in image and left and right */ |
480 | total_active_pixels = hdisplay_rnd + left_margin + right_margin; |
480 | total_active_pixels = hdisplay_rnd + left_margin + right_margin; |
481 | /* 18.Find the ideal blanking duty cycle from blanking duty cycle */ |
481 | /* 18.Find the ideal blanking duty cycle from blanking duty cycle */ |
482 | ideal_duty_cycle = GTF_C_PRIME * 1000 - |
482 | ideal_duty_cycle = GTF_C_PRIME * 1000 - |
483 | (GTF_M_PRIME * 1000000 / hfreq_est); |
483 | (GTF_M_PRIME * 1000000 / hfreq_est); |
484 | /* 19.Find the number of pixels in the blanking time to the nearest |
484 | /* 19.Find the number of pixels in the blanking time to the nearest |
485 | * double character cell: */ |
485 | * double character cell: */ |
486 | hblank = total_active_pixels * ideal_duty_cycle / |
486 | hblank = total_active_pixels * ideal_duty_cycle / |
487 | (100000 - ideal_duty_cycle); |
487 | (100000 - ideal_duty_cycle); |
488 | hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN); |
488 | hblank = (hblank + GTF_CELL_GRAN) / (2 * GTF_CELL_GRAN); |
489 | hblank = hblank * 2 * GTF_CELL_GRAN; |
489 | hblank = hblank * 2 * GTF_CELL_GRAN; |
490 | /* 20.Find total number of pixels: */ |
490 | /* 20.Find total number of pixels: */ |
491 | total_pixels = total_active_pixels + hblank; |
491 | total_pixels = total_active_pixels + hblank; |
492 | /* 21.Find pixel clock frequency: */ |
492 | /* 21.Find pixel clock frequency: */ |
493 | pixel_freq = total_pixels * hfreq_est / 1000; |
493 | pixel_freq = total_pixels * hfreq_est / 1000; |
494 | /* Stage 1 computations are now complete; I should really pass |
494 | /* Stage 1 computations are now complete; I should really pass |
495 | * the results to another function and do the Stage 2 computations, |
495 | * the results to another function and do the Stage 2 computations, |
496 | * but I only need a few more values so I'll just append the |
496 | * but I only need a few more values so I'll just append the |
497 | * computations here for now */ |
497 | * computations here for now */ |
498 | /* 17. Find the number of pixels in the horizontal sync period: */ |
498 | /* 17. Find the number of pixels in the horizontal sync period: */ |
499 | hsync = H_SYNC_PERCENT * total_pixels / 100; |
499 | hsync = H_SYNC_PERCENT * total_pixels / 100; |
500 | hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
500 | hsync = (hsync + GTF_CELL_GRAN / 2) / GTF_CELL_GRAN; |
501 | hsync = hsync * GTF_CELL_GRAN; |
501 | hsync = hsync * GTF_CELL_GRAN; |
502 | /* 18. Find the number of pixels in horizontal front porch period */ |
502 | /* 18. Find the number of pixels in horizontal front porch period */ |
503 | hfront_porch = hblank / 2 - hsync; |
503 | hfront_porch = hblank / 2 - hsync; |
504 | /* 36. Find the number of lines in the odd front porch period: */ |
504 | /* 36. Find the number of lines in the odd front porch period: */ |
505 | vodd_front_porch_lines = GTF_MIN_V_PORCH ; |
505 | vodd_front_porch_lines = GTF_MIN_V_PORCH ; |
506 | 506 | ||
507 | /* finally, pack the results in the mode struct */ |
507 | /* finally, pack the results in the mode struct */ |
508 | drm_mode->hdisplay = hdisplay_rnd; |
508 | drm_mode->hdisplay = hdisplay_rnd; |
509 | drm_mode->hsync_start = hdisplay_rnd + hfront_porch; |
509 | drm_mode->hsync_start = hdisplay_rnd + hfront_porch; |
510 | drm_mode->hsync_end = drm_mode->hsync_start + hsync; |
510 | drm_mode->hsync_end = drm_mode->hsync_start + hsync; |
511 | drm_mode->htotal = total_pixels; |
511 | drm_mode->htotal = total_pixels; |
512 | drm_mode->vdisplay = vdisplay_rnd; |
512 | drm_mode->vdisplay = vdisplay_rnd; |
513 | drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines; |
513 | drm_mode->vsync_start = vdisplay_rnd + vodd_front_porch_lines; |
514 | drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD; |
514 | drm_mode->vsync_end = drm_mode->vsync_start + V_SYNC_RQD; |
515 | drm_mode->vtotal = vtotal_lines; |
515 | drm_mode->vtotal = vtotal_lines; |
516 | 516 | ||
517 | drm_mode->clock = pixel_freq; |
517 | drm_mode->clock = pixel_freq; |
518 | 518 | ||
519 | if (interlaced) { |
519 | if (interlaced) { |
520 | drm_mode->vtotal *= 2; |
520 | drm_mode->vtotal *= 2; |
521 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
521 | drm_mode->flags |= DRM_MODE_FLAG_INTERLACE; |
522 | } |
522 | } |
523 | 523 | ||
524 | drm_mode_set_name(drm_mode); |
524 | drm_mode_set_name(drm_mode); |
525 | if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40) |
525 | if (GTF_M == 600 && GTF_2C == 80 && GTF_K == 128 && GTF_2J == 40) |
526 | drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; |
526 | drm_mode->flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC; |
527 | else |
527 | else |
528 | drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC; |
528 | drm_mode->flags = DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NVSYNC; |
529 | 529 | ||
530 | return drm_mode; |
530 | return drm_mode; |
531 | } |
531 | } |
532 | EXPORT_SYMBOL(drm_gtf_mode_complex); |
532 | EXPORT_SYMBOL(drm_gtf_mode_complex); |
533 | 533 | ||
534 | /** |
534 | /** |
535 | * drm_gtf_mode - create the modeline based on the GTF algorithm |
535 | * drm_gtf_mode - create the modeline based on the GTF algorithm |
536 | * @dev: drm device |
536 | * @dev: drm device |
537 | * @hdisplay: hdisplay size |
537 | * @hdisplay: hdisplay size |
538 | * @vdisplay: vdisplay size |
538 | * @vdisplay: vdisplay size |
539 | * @vrefresh: vrefresh rate. |
539 | * @vrefresh: vrefresh rate. |
540 | * @interlaced: whether to compute an interlaced mode |
540 | * @interlaced: whether to compute an interlaced mode |
541 | * @margins: desired margin (borders) size |
541 | * @margins: desired margin (borders) size |
542 | * |
542 | * |
543 | * return the modeline based on GTF algorithm |
543 | * return the modeline based on GTF algorithm |
544 | * |
544 | * |
545 | * This function is to create the modeline based on the GTF algorithm. |
545 | * This function is to create the modeline based on the GTF algorithm. |
546 | * Generalized Timing Formula is derived from: |
546 | * Generalized Timing Formula is derived from: |
547 | * GTF Spreadsheet by Andy Morrish (1/5/97) |
547 | * GTF Spreadsheet by Andy Morrish (1/5/97) |
548 | * available at http://www.vesa.org |
548 | * available at http://www.vesa.org |
549 | * |
549 | * |
550 | * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c. |
550 | * And it is copied from the file of xserver/hw/xfree86/modes/xf86gtf.c. |
551 | * What I have done is to translate it by using integer calculation. |
551 | * What I have done is to translate it by using integer calculation. |
552 | * I also refer to the function of fb_get_mode in the file of |
552 | * I also refer to the function of fb_get_mode in the file of |
553 | * drivers/video/fbmon.c |
553 | * drivers/video/fbmon.c |
554 | * |
554 | * |
555 | * Standard GTF parameters: |
555 | * Standard GTF parameters: |
556 | * M = 600 |
556 | * M = 600 |
557 | * C = 40 |
557 | * C = 40 |
558 | * K = 128 |
558 | * K = 128 |
559 | * J = 20 |
559 | * J = 20 |
560 | * |
560 | * |
561 | * Returns: |
561 | * Returns: |
562 | * The modeline based on the GTF algorithm stored in a drm_display_mode object. |
562 | * The modeline based on the GTF algorithm stored in a drm_display_mode object. |
563 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
563 | * The display mode object is allocated with drm_mode_create(). Returns NULL |
564 | * when no mode could be allocated. |
564 | * when no mode could be allocated. |
565 | */ |
565 | */ |
566 | struct drm_display_mode * |
566 | struct drm_display_mode * |
567 | drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, |
567 | drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, |
568 | bool interlaced, int margins) |
568 | bool interlaced, int margins) |
569 | { |
569 | { |
570 | return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, |
570 | return drm_gtf_mode_complex(dev, hdisplay, vdisplay, vrefresh, |
571 | interlaced, margins, |
571 | interlaced, margins, |
572 | 600, 40 * 2, 128, 20 * 2); |
572 | 600, 40 * 2, 128, 20 * 2); |
573 | } |
573 | } |
574 | EXPORT_SYMBOL(drm_gtf_mode); |
574 | EXPORT_SYMBOL(drm_gtf_mode); |
575 | 575 | ||
576 | #ifdef CONFIG_VIDEOMODE_HELPERS |
576 | #ifdef CONFIG_VIDEOMODE_HELPERS |
577 | /** |
577 | /** |
578 | * drm_display_mode_from_videomode - fill in @dmode using @vm, |
578 | * drm_display_mode_from_videomode - fill in @dmode using @vm, |
579 | * @vm: videomode structure to use as source |
579 | * @vm: videomode structure to use as source |
580 | * @dmode: drm_display_mode structure to use as destination |
580 | * @dmode: drm_display_mode structure to use as destination |
581 | * |
581 | * |
582 | * Fills out @dmode using the display mode specified in @vm. |
582 | * Fills out @dmode using the display mode specified in @vm. |
583 | */ |
583 | */ |
584 | void drm_display_mode_from_videomode(const struct videomode *vm, |
584 | void drm_display_mode_from_videomode(const struct videomode *vm, |
585 | struct drm_display_mode *dmode) |
585 | struct drm_display_mode *dmode) |
586 | { |
586 | { |
587 | dmode->hdisplay = vm->hactive; |
587 | dmode->hdisplay = vm->hactive; |
588 | dmode->hsync_start = dmode->hdisplay + vm->hfront_porch; |
588 | dmode->hsync_start = dmode->hdisplay + vm->hfront_porch; |
589 | dmode->hsync_end = dmode->hsync_start + vm->hsync_len; |
589 | dmode->hsync_end = dmode->hsync_start + vm->hsync_len; |
590 | dmode->htotal = dmode->hsync_end + vm->hback_porch; |
590 | dmode->htotal = dmode->hsync_end + vm->hback_porch; |
591 | 591 | ||
592 | dmode->vdisplay = vm->vactive; |
592 | dmode->vdisplay = vm->vactive; |
593 | dmode->vsync_start = dmode->vdisplay + vm->vfront_porch; |
593 | dmode->vsync_start = dmode->vdisplay + vm->vfront_porch; |
594 | dmode->vsync_end = dmode->vsync_start + vm->vsync_len; |
594 | dmode->vsync_end = dmode->vsync_start + vm->vsync_len; |
595 | dmode->vtotal = dmode->vsync_end + vm->vback_porch; |
595 | dmode->vtotal = dmode->vsync_end + vm->vback_porch; |
596 | 596 | ||
597 | dmode->clock = vm->pixelclock / 1000; |
597 | dmode->clock = vm->pixelclock / 1000; |
598 | 598 | ||
599 | dmode->flags = 0; |
599 | dmode->flags = 0; |
600 | if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) |
600 | if (vm->flags & DISPLAY_FLAGS_HSYNC_HIGH) |
601 | dmode->flags |= DRM_MODE_FLAG_PHSYNC; |
601 | dmode->flags |= DRM_MODE_FLAG_PHSYNC; |
602 | else if (vm->flags & DISPLAY_FLAGS_HSYNC_LOW) |
602 | else if (vm->flags & DISPLAY_FLAGS_HSYNC_LOW) |
603 | dmode->flags |= DRM_MODE_FLAG_NHSYNC; |
603 | dmode->flags |= DRM_MODE_FLAG_NHSYNC; |
604 | if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) |
604 | if (vm->flags & DISPLAY_FLAGS_VSYNC_HIGH) |
605 | dmode->flags |= DRM_MODE_FLAG_PVSYNC; |
605 | dmode->flags |= DRM_MODE_FLAG_PVSYNC; |
606 | else if (vm->flags & DISPLAY_FLAGS_VSYNC_LOW) |
606 | else if (vm->flags & DISPLAY_FLAGS_VSYNC_LOW) |
607 | dmode->flags |= DRM_MODE_FLAG_NVSYNC; |
607 | dmode->flags |= DRM_MODE_FLAG_NVSYNC; |
608 | if (vm->flags & DISPLAY_FLAGS_INTERLACED) |
608 | if (vm->flags & DISPLAY_FLAGS_INTERLACED) |
609 | dmode->flags |= DRM_MODE_FLAG_INTERLACE; |
609 | dmode->flags |= DRM_MODE_FLAG_INTERLACE; |
610 | if (vm->flags & DISPLAY_FLAGS_DOUBLESCAN) |
610 | if (vm->flags & DISPLAY_FLAGS_DOUBLESCAN) |
611 | dmode->flags |= DRM_MODE_FLAG_DBLSCAN; |
611 | dmode->flags |= DRM_MODE_FLAG_DBLSCAN; |
612 | if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) |
612 | if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) |
613 | dmode->flags |= DRM_MODE_FLAG_DBLCLK; |
613 | dmode->flags |= DRM_MODE_FLAG_DBLCLK; |
614 | drm_mode_set_name(dmode); |
614 | drm_mode_set_name(dmode); |
615 | } |
615 | } |
616 | EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); |
616 | EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); |
617 | 617 | ||
618 | /** |
618 | /** |
619 | * drm_display_mode_to_videomode - fill in @vm using @dmode, |
619 | * drm_display_mode_to_videomode - fill in @vm using @dmode, |
620 | * @dmode: drm_display_mode structure to use as source |
620 | * @dmode: drm_display_mode structure to use as source |
621 | * @vm: videomode structure to use as destination |
621 | * @vm: videomode structure to use as destination |
622 | * |
622 | * |
623 | * Fills out @vm using the display mode specified in @dmode. |
623 | * Fills out @vm using the display mode specified in @dmode. |
624 | */ |
624 | */ |
625 | void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, |
625 | void drm_display_mode_to_videomode(const struct drm_display_mode *dmode, |
626 | struct videomode *vm) |
626 | struct videomode *vm) |
627 | { |
627 | { |
628 | vm->hactive = dmode->hdisplay; |
628 | vm->hactive = dmode->hdisplay; |
629 | vm->hfront_porch = dmode->hsync_start - dmode->hdisplay; |
629 | vm->hfront_porch = dmode->hsync_start - dmode->hdisplay; |
630 | vm->hsync_len = dmode->hsync_end - dmode->hsync_start; |
630 | vm->hsync_len = dmode->hsync_end - dmode->hsync_start; |
631 | vm->hback_porch = dmode->htotal - dmode->hsync_end; |
631 | vm->hback_porch = dmode->htotal - dmode->hsync_end; |
632 | 632 | ||
633 | vm->vactive = dmode->vdisplay; |
633 | vm->vactive = dmode->vdisplay; |
634 | vm->vfront_porch = dmode->vsync_start - dmode->vdisplay; |
634 | vm->vfront_porch = dmode->vsync_start - dmode->vdisplay; |
635 | vm->vsync_len = dmode->vsync_end - dmode->vsync_start; |
635 | vm->vsync_len = dmode->vsync_end - dmode->vsync_start; |
636 | vm->vback_porch = dmode->vtotal - dmode->vsync_end; |
636 | vm->vback_porch = dmode->vtotal - dmode->vsync_end; |
637 | 637 | ||
638 | vm->pixelclock = dmode->clock * 1000; |
638 | vm->pixelclock = dmode->clock * 1000; |
639 | 639 | ||
640 | vm->flags = 0; |
640 | vm->flags = 0; |
641 | if (dmode->flags & DRM_MODE_FLAG_PHSYNC) |
641 | if (dmode->flags & DRM_MODE_FLAG_PHSYNC) |
642 | vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH; |
642 | vm->flags |= DISPLAY_FLAGS_HSYNC_HIGH; |
643 | else if (dmode->flags & DRM_MODE_FLAG_NHSYNC) |
643 | else if (dmode->flags & DRM_MODE_FLAG_NHSYNC) |
644 | vm->flags |= DISPLAY_FLAGS_HSYNC_LOW; |
644 | vm->flags |= DISPLAY_FLAGS_HSYNC_LOW; |
645 | if (dmode->flags & DRM_MODE_FLAG_PVSYNC) |
645 | if (dmode->flags & DRM_MODE_FLAG_PVSYNC) |
646 | vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH; |
646 | vm->flags |= DISPLAY_FLAGS_VSYNC_HIGH; |
647 | else if (dmode->flags & DRM_MODE_FLAG_NVSYNC) |
647 | else if (dmode->flags & DRM_MODE_FLAG_NVSYNC) |
648 | vm->flags |= DISPLAY_FLAGS_VSYNC_LOW; |
648 | vm->flags |= DISPLAY_FLAGS_VSYNC_LOW; |
649 | if (dmode->flags & DRM_MODE_FLAG_INTERLACE) |
649 | if (dmode->flags & DRM_MODE_FLAG_INTERLACE) |
650 | vm->flags |= DISPLAY_FLAGS_INTERLACED; |
650 | vm->flags |= DISPLAY_FLAGS_INTERLACED; |
651 | if (dmode->flags & DRM_MODE_FLAG_DBLSCAN) |
651 | if (dmode->flags & DRM_MODE_FLAG_DBLSCAN) |
652 | vm->flags |= DISPLAY_FLAGS_DOUBLESCAN; |
652 | vm->flags |= DISPLAY_FLAGS_DOUBLESCAN; |
653 | if (dmode->flags & DRM_MODE_FLAG_DBLCLK) |
653 | if (dmode->flags & DRM_MODE_FLAG_DBLCLK) |
654 | vm->flags |= DISPLAY_FLAGS_DOUBLECLK; |
654 | vm->flags |= DISPLAY_FLAGS_DOUBLECLK; |
655 | } |
655 | } |
656 | EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); |
656 | EXPORT_SYMBOL_GPL(drm_display_mode_to_videomode); |
657 | 657 | ||
658 | #ifdef CONFIG_OF |
658 | #ifdef CONFIG_OF |
659 | /** |
659 | /** |
660 | * of_get_drm_display_mode - get a drm_display_mode from devicetree |
660 | * of_get_drm_display_mode - get a drm_display_mode from devicetree |
661 | * @np: device_node with the timing specification |
661 | * @np: device_node with the timing specification |
662 | * @dmode: will be set to the return value |
662 | * @dmode: will be set to the return value |
663 | * @index: index into the list of display timings in devicetree |
663 | * @index: index into the list of display timings in devicetree |
664 | * |
664 | * |
665 | * This function is expensive and should only be used, if only one mode is to be |
665 | * This function is expensive and should only be used, if only one mode is to be |
666 | * read from DT. To get multiple modes start with of_get_display_timings and |
666 | * read from DT. To get multiple modes start with of_get_display_timings and |
667 | * work with that instead. |
667 | * work with that instead. |
668 | * |
668 | * |
669 | * Returns: |
669 | * Returns: |
670 | * 0 on success, a negative errno code when no of videomode node was found. |
670 | * 0 on success, a negative errno code when no of videomode node was found. |
671 | */ |
671 | */ |
672 | int of_get_drm_display_mode(struct device_node *np, |
672 | int of_get_drm_display_mode(struct device_node *np, |
673 | struct drm_display_mode *dmode, int index) |
673 | struct drm_display_mode *dmode, int index) |
674 | { |
674 | { |
675 | struct videomode vm; |
675 | struct videomode vm; |
676 | int ret; |
676 | int ret; |
677 | 677 | ||
678 | ret = of_get_videomode(np, &vm, index); |
678 | ret = of_get_videomode(np, &vm, index); |
679 | if (ret) |
679 | if (ret) |
680 | return ret; |
680 | return ret; |
681 | 681 | ||
682 | drm_display_mode_from_videomode(&vm, dmode); |
682 | drm_display_mode_from_videomode(&vm, dmode); |
683 | 683 | ||
684 | pr_debug("%s: got %dx%d display mode from %s\n", |
684 | pr_debug("%s: got %dx%d display mode from %s\n", |
685 | of_node_full_name(np), vm.hactive, vm.vactive, np->name); |
685 | of_node_full_name(np), vm.hactive, vm.vactive, np->name); |
686 | drm_mode_debug_printmodeline(dmode); |
686 | drm_mode_debug_printmodeline(dmode); |
687 | 687 | ||
688 | return 0; |
688 | return 0; |
689 | } |
689 | } |
690 | EXPORT_SYMBOL_GPL(of_get_drm_display_mode); |
690 | EXPORT_SYMBOL_GPL(of_get_drm_display_mode); |
691 | #endif /* CONFIG_OF */ |
691 | #endif /* CONFIG_OF */ |
692 | #endif /* CONFIG_VIDEOMODE_HELPERS */ |
692 | #endif /* CONFIG_VIDEOMODE_HELPERS */ |
693 | 693 | ||
694 | /** |
694 | /** |
695 | * drm_mode_set_name - set the name on a mode |
695 | * drm_mode_set_name - set the name on a mode |
696 | * @mode: name will be set in this mode |
696 | * @mode: name will be set in this mode |
697 | * |
697 | * |
698 | * Set the name of @mode to a standard format which is |
698 | * Set the name of @mode to a standard format which is |
699 | * with an optional 'i' suffix for interlaced modes. |
699 | * with an optional 'i' suffix for interlaced modes. |
700 | */ |
700 | */ |
701 | void drm_mode_set_name(struct drm_display_mode *mode) |
701 | void drm_mode_set_name(struct drm_display_mode *mode) |
702 | { |
702 | { |
703 | bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); |
703 | bool interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); |
704 | 704 | ||
705 | snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s", |
705 | snprintf(mode->name, DRM_DISPLAY_MODE_LEN, "%dx%d%s", |
706 | mode->hdisplay, mode->vdisplay, |
706 | mode->hdisplay, mode->vdisplay, |
707 | interlaced ? "i" : ""); |
707 | interlaced ? "i" : ""); |
708 | } |
708 | } |
709 | EXPORT_SYMBOL(drm_mode_set_name); |
709 | EXPORT_SYMBOL(drm_mode_set_name); |
710 | 710 | ||
711 | /** |
711 | /** |
712 | * drm_mode_hsync - get the hsync of a mode |
712 | * drm_mode_hsync - get the hsync of a mode |
713 | * @mode: mode |
713 | * @mode: mode |
714 | * |
714 | * |
715 | * Returns: |
715 | * Returns: |
716 | * @modes's hsync rate in kHz, rounded to the nearest integer. Calculates the |
716 | * @modes's hsync rate in kHz, rounded to the nearest integer. Calculates the |
717 | * value first if it is not yet set. |
717 | * value first if it is not yet set. |
718 | */ |
718 | */ |
719 | int drm_mode_hsync(const struct drm_display_mode *mode) |
719 | int drm_mode_hsync(const struct drm_display_mode *mode) |
720 | { |
720 | { |
721 | unsigned int calc_val; |
721 | unsigned int calc_val; |
722 | 722 | ||
723 | if (mode->hsync) |
723 | if (mode->hsync) |
724 | return mode->hsync; |
724 | return mode->hsync; |
725 | 725 | ||
726 | if (mode->htotal < 0) |
726 | if (mode->htotal < 0) |
727 | return 0; |
727 | return 0; |
728 | 728 | ||
729 | calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */ |
729 | calc_val = (mode->clock * 1000) / mode->htotal; /* hsync in Hz */ |
730 | calc_val += 500; /* round to 1000Hz */ |
730 | calc_val += 500; /* round to 1000Hz */ |
731 | calc_val /= 1000; /* truncate to kHz */ |
731 | calc_val /= 1000; /* truncate to kHz */ |
732 | 732 | ||
733 | return calc_val; |
733 | return calc_val; |
734 | } |
734 | } |
735 | EXPORT_SYMBOL(drm_mode_hsync); |
735 | EXPORT_SYMBOL(drm_mode_hsync); |
736 | 736 | ||
737 | /** |
737 | /** |
738 | * drm_mode_vrefresh - get the vrefresh of a mode |
738 | * drm_mode_vrefresh - get the vrefresh of a mode |
739 | * @mode: mode |
739 | * @mode: mode |
740 | * |
740 | * |
741 | * Returns: |
741 | * Returns: |
742 | * @modes's vrefresh rate in Hz, rounded to the nearest integer. Calculates the |
742 | * @modes's vrefresh rate in Hz, rounded to the nearest integer. Calculates the |
743 | * value first if it is not yet set. |
743 | * value first if it is not yet set. |
744 | */ |
744 | */ |
745 | int drm_mode_vrefresh(const struct drm_display_mode *mode) |
745 | int drm_mode_vrefresh(const struct drm_display_mode *mode) |
746 | { |
746 | { |
747 | int refresh = 0; |
747 | int refresh = 0; |
748 | unsigned int calc_val; |
748 | unsigned int calc_val; |
749 | 749 | ||
750 | if (mode->vrefresh > 0) |
750 | if (mode->vrefresh > 0) |
751 | refresh = mode->vrefresh; |
751 | refresh = mode->vrefresh; |
752 | else if (mode->htotal > 0 && mode->vtotal > 0) { |
752 | else if (mode->htotal > 0 && mode->vtotal > 0) { |
753 | int vtotal; |
753 | int vtotal; |
754 | vtotal = mode->vtotal; |
754 | vtotal = mode->vtotal; |
755 | /* work out vrefresh the value will be x1000 */ |
755 | /* work out vrefresh the value will be x1000 */ |
756 | calc_val = (mode->clock * 1000); |
756 | calc_val = (mode->clock * 1000); |
757 | calc_val /= mode->htotal; |
757 | calc_val /= mode->htotal; |
758 | refresh = (calc_val + vtotal / 2) / vtotal; |
758 | refresh = (calc_val + vtotal / 2) / vtotal; |
759 | 759 | ||
760 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) |
760 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) |
761 | refresh *= 2; |
761 | refresh *= 2; |
762 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
762 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) |
763 | refresh /= 2; |
763 | refresh /= 2; |
764 | if (mode->vscan > 1) |
764 | if (mode->vscan > 1) |
765 | refresh /= mode->vscan; |
765 | refresh /= mode->vscan; |
766 | } |
766 | } |
767 | return refresh; |
767 | return refresh; |
768 | } |
768 | } |
769 | EXPORT_SYMBOL(drm_mode_vrefresh); |
769 | EXPORT_SYMBOL(drm_mode_vrefresh); |
770 | 770 | ||
771 | /** |
771 | /** |
772 | * drm_mode_set_crtcinfo - set CRTC modesetting timing parameters |
772 | * drm_mode_set_crtcinfo - set CRTC modesetting timing parameters |
773 | * @p: mode |
773 | * @p: mode |
774 | * @adjust_flags: a combination of adjustment flags |
774 | * @adjust_flags: a combination of adjustment flags |
775 | * |
775 | * |
776 | * Setup the CRTC modesetting timing parameters for @p, adjusting if necessary. |
776 | * Setup the CRTC modesetting timing parameters for @p, adjusting if necessary. |
777 | * |
777 | * |
778 | * - The CRTC_INTERLACE_HALVE_V flag can be used to halve vertical timings of |
778 | * - The CRTC_INTERLACE_HALVE_V flag can be used to halve vertical timings of |
779 | * interlaced modes. |
779 | * interlaced modes. |
780 | * - The CRTC_STEREO_DOUBLE flag can be used to compute the timings for |
780 | * - The CRTC_STEREO_DOUBLE flag can be used to compute the timings for |
781 | * buffers containing two eyes (only adjust the timings when needed, eg. for |
781 | * buffers containing two eyes (only adjust the timings when needed, eg. for |
782 | * "frame packing" or "side by side full"). |
782 | * "frame packing" or "side by side full"). |
783 | * - The CRTC_NO_DBLSCAN and CRTC_NO_VSCAN flags request that adjustment *not* |
783 | * - The CRTC_NO_DBLSCAN and CRTC_NO_VSCAN flags request that adjustment *not* |
784 | * be performed for doublescan and vscan > 1 modes respectively. |
784 | * be performed for doublescan and vscan > 1 modes respectively. |
785 | */ |
785 | */ |
786 | void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) |
786 | void drm_mode_set_crtcinfo(struct drm_display_mode *p, int adjust_flags) |
787 | { |
787 | { |
788 | if ((p == NULL) || ((p->type & DRM_MODE_TYPE_CRTC_C) == DRM_MODE_TYPE_BUILTIN)) |
788 | if ((p == NULL) || ((p->type & DRM_MODE_TYPE_CRTC_C) == DRM_MODE_TYPE_BUILTIN)) |
789 | return; |
789 | return; |
790 | 790 | ||
791 | p->crtc_clock = p->clock; |
791 | p->crtc_clock = p->clock; |
792 | p->crtc_hdisplay = p->hdisplay; |
792 | p->crtc_hdisplay = p->hdisplay; |
793 | p->crtc_hsync_start = p->hsync_start; |
793 | p->crtc_hsync_start = p->hsync_start; |
794 | p->crtc_hsync_end = p->hsync_end; |
794 | p->crtc_hsync_end = p->hsync_end; |
795 | p->crtc_htotal = p->htotal; |
795 | p->crtc_htotal = p->htotal; |
796 | p->crtc_hskew = p->hskew; |
796 | p->crtc_hskew = p->hskew; |
797 | p->crtc_vdisplay = p->vdisplay; |
797 | p->crtc_vdisplay = p->vdisplay; |
798 | p->crtc_vsync_start = p->vsync_start; |
798 | p->crtc_vsync_start = p->vsync_start; |
799 | p->crtc_vsync_end = p->vsync_end; |
799 | p->crtc_vsync_end = p->vsync_end; |
800 | p->crtc_vtotal = p->vtotal; |
800 | p->crtc_vtotal = p->vtotal; |
801 | 801 | ||
802 | if (p->flags & DRM_MODE_FLAG_INTERLACE) { |
802 | if (p->flags & DRM_MODE_FLAG_INTERLACE) { |
803 | if (adjust_flags & CRTC_INTERLACE_HALVE_V) { |
803 | if (adjust_flags & CRTC_INTERLACE_HALVE_V) { |
804 | p->crtc_vdisplay /= 2; |
804 | p->crtc_vdisplay /= 2; |
805 | p->crtc_vsync_start /= 2; |
805 | p->crtc_vsync_start /= 2; |
806 | p->crtc_vsync_end /= 2; |
806 | p->crtc_vsync_end /= 2; |
807 | p->crtc_vtotal /= 2; |
807 | p->crtc_vtotal /= 2; |
808 | } |
808 | } |
809 | } |
809 | } |
810 | 810 | ||
811 | if (!(adjust_flags & CRTC_NO_DBLSCAN)) { |
811 | if (!(adjust_flags & CRTC_NO_DBLSCAN)) { |
812 | if (p->flags & DRM_MODE_FLAG_DBLSCAN) { |
812 | if (p->flags & DRM_MODE_FLAG_DBLSCAN) { |
813 | p->crtc_vdisplay *= 2; |
813 | p->crtc_vdisplay *= 2; |
814 | p->crtc_vsync_start *= 2; |
814 | p->crtc_vsync_start *= 2; |
815 | p->crtc_vsync_end *= 2; |
815 | p->crtc_vsync_end *= 2; |
816 | p->crtc_vtotal *= 2; |
816 | p->crtc_vtotal *= 2; |
817 | } |
817 | } |
818 | } |
818 | } |
819 | 819 | ||
820 | if (!(adjust_flags & CRTC_NO_VSCAN)) { |
820 | if (!(adjust_flags & CRTC_NO_VSCAN)) { |
821 | if (p->vscan > 1) { |
821 | if (p->vscan > 1) { |
822 | p->crtc_vdisplay *= p->vscan; |
822 | p->crtc_vdisplay *= p->vscan; |
823 | p->crtc_vsync_start *= p->vscan; |
823 | p->crtc_vsync_start *= p->vscan; |
824 | p->crtc_vsync_end *= p->vscan; |
824 | p->crtc_vsync_end *= p->vscan; |
825 | p->crtc_vtotal *= p->vscan; |
825 | p->crtc_vtotal *= p->vscan; |
826 | } |
826 | } |
827 | } |
827 | } |
828 | 828 | ||
829 | if (adjust_flags & CRTC_STEREO_DOUBLE) { |
829 | if (adjust_flags & CRTC_STEREO_DOUBLE) { |
830 | unsigned int layout = p->flags & DRM_MODE_FLAG_3D_MASK; |
830 | unsigned int layout = p->flags & DRM_MODE_FLAG_3D_MASK; |
831 | 831 | ||
832 | switch (layout) { |
832 | switch (layout) { |
833 | case DRM_MODE_FLAG_3D_FRAME_PACKING: |
833 | case DRM_MODE_FLAG_3D_FRAME_PACKING: |
834 | p->crtc_clock *= 2; |
834 | p->crtc_clock *= 2; |
835 | p->crtc_vdisplay += p->crtc_vtotal; |
835 | p->crtc_vdisplay += p->crtc_vtotal; |
836 | p->crtc_vsync_start += p->crtc_vtotal; |
836 | p->crtc_vsync_start += p->crtc_vtotal; |
837 | p->crtc_vsync_end += p->crtc_vtotal; |
837 | p->crtc_vsync_end += p->crtc_vtotal; |
838 | p->crtc_vtotal += p->crtc_vtotal; |
838 | p->crtc_vtotal += p->crtc_vtotal; |
839 | break; |
839 | break; |
840 | } |
840 | } |
841 | } |
841 | } |
842 | 842 | ||
843 | p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay); |
843 | p->crtc_vblank_start = min(p->crtc_vsync_start, p->crtc_vdisplay); |
844 | p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal); |
844 | p->crtc_vblank_end = max(p->crtc_vsync_end, p->crtc_vtotal); |
845 | p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay); |
845 | p->crtc_hblank_start = min(p->crtc_hsync_start, p->crtc_hdisplay); |
846 | p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal); |
846 | p->crtc_hblank_end = max(p->crtc_hsync_end, p->crtc_htotal); |
847 | } |
847 | } |
848 | EXPORT_SYMBOL(drm_mode_set_crtcinfo); |
848 | EXPORT_SYMBOL(drm_mode_set_crtcinfo); |
849 | 849 | ||
850 | /** |
850 | /** |
851 | * drm_mode_copy - copy the mode |
851 | * drm_mode_copy - copy the mode |
852 | * @dst: mode to overwrite |
852 | * @dst: mode to overwrite |
853 | * @src: mode to copy |
853 | * @src: mode to copy |
854 | * |
854 | * |
855 | * Copy an existing mode into another mode, preserving the object id and |
855 | * Copy an existing mode into another mode, preserving the object id and |
856 | * list head of the destination mode. |
856 | * list head of the destination mode. |
857 | */ |
857 | */ |
858 | void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) |
858 | void drm_mode_copy(struct drm_display_mode *dst, const struct drm_display_mode *src) |
859 | { |
859 | { |
860 | int id = dst->base.id; |
860 | int id = dst->base.id; |
861 | struct list_head head = dst->head; |
861 | struct list_head head = dst->head; |
862 | 862 | ||
863 | *dst = *src; |
863 | *dst = *src; |
864 | dst->base.id = id; |
864 | dst->base.id = id; |
865 | dst->head = head; |
865 | dst->head = head; |
866 | } |
866 | } |
867 | EXPORT_SYMBOL(drm_mode_copy); |
867 | EXPORT_SYMBOL(drm_mode_copy); |
868 | 868 | ||
869 | /** |
869 | /** |
870 | * drm_mode_duplicate - allocate and duplicate an existing mode |
870 | * drm_mode_duplicate - allocate and duplicate an existing mode |
871 | * @dev: drm_device to allocate the duplicated mode for |
871 | * @dev: drm_device to allocate the duplicated mode for |
872 | * @mode: mode to duplicate |
872 | * @mode: mode to duplicate |
873 | * |
873 | * |
874 | * Just allocate a new mode, copy the existing mode into it, and return |
874 | * Just allocate a new mode, copy the existing mode into it, and return |
875 | * a pointer to it. Used to create new instances of established modes. |
875 | * a pointer to it. Used to create new instances of established modes. |
876 | * |
876 | * |
877 | * Returns: |
877 | * Returns: |
878 | * Pointer to duplicated mode on success, NULL on error. |
878 | * Pointer to duplicated mode on success, NULL on error. |
879 | */ |
879 | */ |
880 | struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, |
880 | struct drm_display_mode *drm_mode_duplicate(struct drm_device *dev, |
881 | const struct drm_display_mode *mode) |
881 | const struct drm_display_mode *mode) |
882 | { |
882 | { |
883 | struct drm_display_mode *nmode; |
883 | struct drm_display_mode *nmode; |
884 | 884 | ||
885 | nmode = drm_mode_create(dev); |
885 | nmode = drm_mode_create(dev); |
886 | if (!nmode) |
886 | if (!nmode) |
887 | return NULL; |
887 | return NULL; |
888 | 888 | ||
889 | drm_mode_copy(nmode, mode); |
889 | drm_mode_copy(nmode, mode); |
890 | 890 | ||
891 | return nmode; |
891 | return nmode; |
892 | } |
892 | } |
893 | EXPORT_SYMBOL(drm_mode_duplicate); |
893 | EXPORT_SYMBOL(drm_mode_duplicate); |
894 | 894 | ||
895 | /** |
895 | /** |
896 | * drm_mode_equal - test modes for equality |
896 | * drm_mode_equal - test modes for equality |
897 | * @mode1: first mode |
897 | * @mode1: first mode |
898 | * @mode2: second mode |
898 | * @mode2: second mode |
899 | * |
899 | * |
900 | * Check to see if @mode1 and @mode2 are equivalent. |
900 | * Check to see if @mode1 and @mode2 are equivalent. |
901 | * |
901 | * |
902 | * Returns: |
902 | * Returns: |
903 | * True if the modes are equal, false otherwise. |
903 | * True if the modes are equal, false otherwise. |
904 | */ |
904 | */ |
905 | bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
905 | bool drm_mode_equal(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
906 | { |
906 | { |
907 | if (!mode1 && !mode2) |
907 | if (!mode1 && !mode2) |
908 | return true; |
908 | return true; |
909 | 909 | ||
910 | if (!mode1 || !mode2) |
910 | if (!mode1 || !mode2) |
911 | return false; |
911 | return false; |
912 | 912 | ||
913 | /* do clock check convert to PICOS so fb modes get matched |
913 | /* do clock check convert to PICOS so fb modes get matched |
914 | * the same */ |
914 | * the same */ |
915 | if (mode1->clock && mode2->clock) { |
915 | if (mode1->clock && mode2->clock) { |
916 | if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock)) |
916 | if (KHZ2PICOS(mode1->clock) != KHZ2PICOS(mode2->clock)) |
917 | return false; |
917 | return false; |
918 | } else if (mode1->clock != mode2->clock) |
918 | } else if (mode1->clock != mode2->clock) |
919 | return false; |
919 | return false; |
920 | 920 | ||
921 | return drm_mode_equal_no_clocks(mode1, mode2); |
921 | return drm_mode_equal_no_clocks(mode1, mode2); |
922 | } |
922 | } |
923 | EXPORT_SYMBOL(drm_mode_equal); |
923 | EXPORT_SYMBOL(drm_mode_equal); |
924 | 924 | ||
925 | /** |
925 | /** |
926 | * drm_mode_equal_no_clocks - test modes for equality |
926 | * drm_mode_equal_no_clocks - test modes for equality |
927 | * @mode1: first mode |
927 | * @mode1: first mode |
928 | * @mode2: second mode |
928 | * @mode2: second mode |
929 | * |
929 | * |
930 | * Check to see if @mode1 and @mode2 are equivalent, but |
930 | * Check to see if @mode1 and @mode2 are equivalent, but |
931 | * don't check the pixel clocks. |
931 | * don't check the pixel clocks. |
932 | * |
932 | * |
933 | * Returns: |
933 | * Returns: |
934 | * True if the modes are equal, false otherwise. |
934 | * True if the modes are equal, false otherwise. |
935 | */ |
935 | */ |
936 | bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
936 | bool drm_mode_equal_no_clocks(const struct drm_display_mode *mode1, const struct drm_display_mode *mode2) |
937 | { |
937 | { |
938 | if ((mode1->flags & DRM_MODE_FLAG_3D_MASK) != |
938 | if ((mode1->flags & DRM_MODE_FLAG_3D_MASK) != |
939 | (mode2->flags & DRM_MODE_FLAG_3D_MASK)) |
939 | (mode2->flags & DRM_MODE_FLAG_3D_MASK)) |
940 | return false; |
940 | return false; |
941 | 941 | ||
942 | return drm_mode_equal_no_clocks_no_stereo(mode1, mode2); |
942 | return drm_mode_equal_no_clocks_no_stereo(mode1, mode2); |
943 | } |
943 | } |
944 | EXPORT_SYMBOL(drm_mode_equal_no_clocks); |
944 | EXPORT_SYMBOL(drm_mode_equal_no_clocks); |
945 | 945 | ||
946 | /** |
946 | /** |
947 | * drm_mode_equal_no_clocks_no_stereo - test modes for equality |
947 | * drm_mode_equal_no_clocks_no_stereo - test modes for equality |
948 | * @mode1: first mode |
948 | * @mode1: first mode |
949 | * @mode2: second mode |
949 | * @mode2: second mode |
950 | * |
950 | * |
951 | * Check to see if @mode1 and @mode2 are equivalent, but |
951 | * Check to see if @mode1 and @mode2 are equivalent, but |
952 | * don't check the pixel clocks nor the stereo layout. |
952 | * don't check the pixel clocks nor the stereo layout. |
953 | * |
953 | * |
954 | * Returns: |
954 | * Returns: |
955 | * True if the modes are equal, false otherwise. |
955 | * True if the modes are equal, false otherwise. |
956 | */ |
956 | */ |
957 | bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, |
957 | bool drm_mode_equal_no_clocks_no_stereo(const struct drm_display_mode *mode1, |
958 | const struct drm_display_mode *mode2) |
958 | const struct drm_display_mode *mode2) |
959 | { |
959 | { |
960 | if (mode1->hdisplay == mode2->hdisplay && |
960 | if (mode1->hdisplay == mode2->hdisplay && |
961 | mode1->hsync_start == mode2->hsync_start && |
961 | mode1->hsync_start == mode2->hsync_start && |
962 | mode1->hsync_end == mode2->hsync_end && |
962 | mode1->hsync_end == mode2->hsync_end && |
963 | mode1->htotal == mode2->htotal && |
963 | mode1->htotal == mode2->htotal && |
964 | mode1->hskew == mode2->hskew && |
964 | mode1->hskew == mode2->hskew && |
965 | mode1->vdisplay == mode2->vdisplay && |
965 | mode1->vdisplay == mode2->vdisplay && |
966 | mode1->vsync_start == mode2->vsync_start && |
966 | mode1->vsync_start == mode2->vsync_start && |
967 | mode1->vsync_end == mode2->vsync_end && |
967 | mode1->vsync_end == mode2->vsync_end && |
968 | mode1->vtotal == mode2->vtotal && |
968 | mode1->vtotal == mode2->vtotal && |
969 | mode1->vscan == mode2->vscan && |
969 | mode1->vscan == mode2->vscan && |
970 | (mode1->flags & ~DRM_MODE_FLAG_3D_MASK) == |
970 | (mode1->flags & ~DRM_MODE_FLAG_3D_MASK) == |
971 | (mode2->flags & ~DRM_MODE_FLAG_3D_MASK)) |
971 | (mode2->flags & ~DRM_MODE_FLAG_3D_MASK)) |
972 | return true; |
972 | return true; |
973 | 973 | ||
974 | return false; |
974 | return false; |
975 | } |
975 | } |
976 | EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo); |
976 | EXPORT_SYMBOL(drm_mode_equal_no_clocks_no_stereo); |
977 | 977 | ||
978 | /** |
978 | /** |
979 | * drm_mode_validate_basic - make sure the mode is somewhat sane |
979 | * drm_mode_validate_basic - make sure the mode is somewhat sane |
980 | * @mode: mode to check |
980 | * @mode: mode to check |
981 | * |
981 | * |
982 | * Check that the mode timings are at least somewhat reasonable. |
982 | * Check that the mode timings are at least somewhat reasonable. |
983 | * Any hardware specific limits are left up for each driver to check. |
983 | * Any hardware specific limits are left up for each driver to check. |
984 | * |
984 | * |
985 | * Returns: |
985 | * Returns: |
986 | * The mode status |
986 | * The mode status |
987 | */ |
987 | */ |
988 | enum drm_mode_status |
988 | enum drm_mode_status |
989 | drm_mode_validate_basic(const struct drm_display_mode *mode) |
989 | drm_mode_validate_basic(const struct drm_display_mode *mode) |
990 | { |
990 | { |
991 | if (mode->clock == 0) |
991 | if (mode->clock == 0) |
992 | return MODE_CLOCK_LOW; |
992 | return MODE_CLOCK_LOW; |
993 | 993 | ||
994 | if (mode->hdisplay == 0 || |
994 | if (mode->hdisplay == 0 || |
995 | mode->hsync_start < mode->hdisplay || |
995 | mode->hsync_start < mode->hdisplay || |
996 | mode->hsync_end < mode->hsync_start || |
996 | mode->hsync_end < mode->hsync_start || |
997 | mode->htotal < mode->hsync_end) |
997 | mode->htotal < mode->hsync_end) |
998 | return MODE_H_ILLEGAL; |
998 | return MODE_H_ILLEGAL; |
999 | 999 | ||
1000 | if (mode->vdisplay == 0 || |
1000 | if (mode->vdisplay == 0 || |
1001 | mode->vsync_start < mode->vdisplay || |
1001 | mode->vsync_start < mode->vdisplay || |
1002 | mode->vsync_end < mode->vsync_start || |
1002 | mode->vsync_end < mode->vsync_start || |
1003 | mode->vtotal < mode->vsync_end) |
1003 | mode->vtotal < mode->vsync_end) |
1004 | return MODE_V_ILLEGAL; |
1004 | return MODE_V_ILLEGAL; |
1005 | 1005 | ||
1006 | return MODE_OK; |
1006 | return MODE_OK; |
1007 | } |
1007 | } |
1008 | EXPORT_SYMBOL(drm_mode_validate_basic); |
1008 | EXPORT_SYMBOL(drm_mode_validate_basic); |
1009 | 1009 | ||
1010 | /** |
1010 | /** |
1011 | * drm_mode_validate_size - make sure modes adhere to size constraints |
1011 | * drm_mode_validate_size - make sure modes adhere to size constraints |
1012 | * @mode: mode to check |
1012 | * @mode: mode to check |
1013 | * @maxX: maximum width |
1013 | * @maxX: maximum width |
1014 | * @maxY: maximum height |
1014 | * @maxY: maximum height |
1015 | * |
1015 | * |
1016 | * This function is a helper which can be used to validate modes against size |
1016 | * This function is a helper which can be used to validate modes against size |
1017 | * limitations of the DRM device/connector. If a mode is too big its status |
1017 | * limitations of the DRM device/connector. If a mode is too big its status |
1018 | * member is updated with the appropriate validation failure code. The list |
1018 | * member is updated with the appropriate validation failure code. The list |
1019 | * itself is not changed. |
1019 | * itself is not changed. |
1020 | * |
1020 | * |
1021 | * Returns: |
1021 | * Returns: |
1022 | * The mode status |
1022 | * The mode status |
1023 | */ |
1023 | */ |
1024 | enum drm_mode_status |
1024 | enum drm_mode_status |
1025 | drm_mode_validate_size(const struct drm_display_mode *mode, |
1025 | drm_mode_validate_size(const struct drm_display_mode *mode, |
1026 | int maxX, int maxY) |
1026 | int maxX, int maxY) |
1027 | { |
1027 | { |
1028 | if (maxX > 0 && mode->hdisplay > maxX) |
1028 | if (maxX > 0 && mode->hdisplay > maxX) |
1029 | return MODE_VIRTUAL_X; |
1029 | return MODE_VIRTUAL_X; |
1030 | 1030 | ||
1031 | if (maxY > 0 && mode->vdisplay > maxY) |
1031 | if (maxY > 0 && mode->vdisplay > maxY) |
1032 | return MODE_VIRTUAL_Y; |
1032 | return MODE_VIRTUAL_Y; |
1033 | 1033 | ||
1034 | return MODE_OK; |
1034 | return MODE_OK; |
1035 | } |
1035 | } |
1036 | EXPORT_SYMBOL(drm_mode_validate_size); |
1036 | EXPORT_SYMBOL(drm_mode_validate_size); |
1037 | 1037 | ||
1038 | #define MODE_STATUS(status) [MODE_ ## status + 3] = #status |
1038 | #define MODE_STATUS(status) [MODE_ ## status + 3] = #status |
1039 | 1039 | ||
1040 | static const char * const drm_mode_status_names[] = { |
1040 | static const char * const drm_mode_status_names[] = { |
1041 | MODE_STATUS(OK), |
1041 | MODE_STATUS(OK), |
1042 | MODE_STATUS(HSYNC), |
1042 | MODE_STATUS(HSYNC), |
1043 | MODE_STATUS(VSYNC), |
1043 | MODE_STATUS(VSYNC), |
1044 | MODE_STATUS(H_ILLEGAL), |
1044 | MODE_STATUS(H_ILLEGAL), |
1045 | MODE_STATUS(V_ILLEGAL), |
1045 | MODE_STATUS(V_ILLEGAL), |
1046 | MODE_STATUS(BAD_WIDTH), |
1046 | MODE_STATUS(BAD_WIDTH), |
1047 | MODE_STATUS(NOMODE), |
1047 | MODE_STATUS(NOMODE), |
1048 | MODE_STATUS(NO_INTERLACE), |
1048 | MODE_STATUS(NO_INTERLACE), |
1049 | MODE_STATUS(NO_DBLESCAN), |
1049 | MODE_STATUS(NO_DBLESCAN), |
1050 | MODE_STATUS(NO_VSCAN), |
1050 | MODE_STATUS(NO_VSCAN), |
1051 | MODE_STATUS(MEM), |
1051 | MODE_STATUS(MEM), |
1052 | MODE_STATUS(VIRTUAL_X), |
1052 | MODE_STATUS(VIRTUAL_X), |
1053 | MODE_STATUS(VIRTUAL_Y), |
1053 | MODE_STATUS(VIRTUAL_Y), |
1054 | MODE_STATUS(MEM_VIRT), |
1054 | MODE_STATUS(MEM_VIRT), |
1055 | MODE_STATUS(NOCLOCK), |
1055 | MODE_STATUS(NOCLOCK), |
1056 | MODE_STATUS(CLOCK_HIGH), |
1056 | MODE_STATUS(CLOCK_HIGH), |
1057 | MODE_STATUS(CLOCK_LOW), |
1057 | MODE_STATUS(CLOCK_LOW), |
1058 | MODE_STATUS(CLOCK_RANGE), |
1058 | MODE_STATUS(CLOCK_RANGE), |
1059 | MODE_STATUS(BAD_HVALUE), |
1059 | MODE_STATUS(BAD_HVALUE), |
1060 | MODE_STATUS(BAD_VVALUE), |
1060 | MODE_STATUS(BAD_VVALUE), |
1061 | MODE_STATUS(BAD_VSCAN), |
1061 | MODE_STATUS(BAD_VSCAN), |
1062 | MODE_STATUS(HSYNC_NARROW), |
1062 | MODE_STATUS(HSYNC_NARROW), |
1063 | MODE_STATUS(HSYNC_WIDE), |
1063 | MODE_STATUS(HSYNC_WIDE), |
1064 | MODE_STATUS(HBLANK_NARROW), |
1064 | MODE_STATUS(HBLANK_NARROW), |
1065 | MODE_STATUS(HBLANK_WIDE), |
1065 | MODE_STATUS(HBLANK_WIDE), |
1066 | MODE_STATUS(VSYNC_NARROW), |
1066 | MODE_STATUS(VSYNC_NARROW), |
1067 | MODE_STATUS(VSYNC_WIDE), |
1067 | MODE_STATUS(VSYNC_WIDE), |
1068 | MODE_STATUS(VBLANK_NARROW), |
1068 | MODE_STATUS(VBLANK_NARROW), |
1069 | MODE_STATUS(VBLANK_WIDE), |
1069 | MODE_STATUS(VBLANK_WIDE), |
1070 | MODE_STATUS(PANEL), |
1070 | MODE_STATUS(PANEL), |
1071 | MODE_STATUS(INTERLACE_WIDTH), |
1071 | MODE_STATUS(INTERLACE_WIDTH), |
1072 | MODE_STATUS(ONE_WIDTH), |
1072 | MODE_STATUS(ONE_WIDTH), |
1073 | MODE_STATUS(ONE_HEIGHT), |
1073 | MODE_STATUS(ONE_HEIGHT), |
1074 | MODE_STATUS(ONE_SIZE), |
1074 | MODE_STATUS(ONE_SIZE), |
1075 | MODE_STATUS(NO_REDUCED), |
1075 | MODE_STATUS(NO_REDUCED), |
1076 | MODE_STATUS(NO_STEREO), |
1076 | MODE_STATUS(NO_STEREO), |
1077 | MODE_STATUS(STALE), |
1077 | MODE_STATUS(STALE), |
1078 | MODE_STATUS(BAD), |
1078 | MODE_STATUS(BAD), |
1079 | MODE_STATUS(ERROR), |
1079 | MODE_STATUS(ERROR), |
1080 | }; |
1080 | }; |
1081 | 1081 | ||
1082 | #undef MODE_STATUS |
1082 | #undef MODE_STATUS |
1083 | 1083 | ||
1084 | static const char *drm_get_mode_status_name(enum drm_mode_status status) |
1084 | static const char *drm_get_mode_status_name(enum drm_mode_status status) |
1085 | { |
1085 | { |
1086 | int index = status + 3; |
1086 | int index = status + 3; |
1087 | 1087 | ||
1088 | if (WARN_ON(index < 0 || index >= ARRAY_SIZE(drm_mode_status_names))) |
1088 | if (WARN_ON(index < 0 || index >= ARRAY_SIZE(drm_mode_status_names))) |
1089 | return ""; |
1089 | return ""; |
1090 | 1090 | ||
1091 | return drm_mode_status_names[index]; |
1091 | return drm_mode_status_names[index]; |
1092 | } |
1092 | } |
1093 | 1093 | ||
1094 | /** |
1094 | /** |
1095 | * drm_mode_prune_invalid - remove invalid modes from mode list |
1095 | * drm_mode_prune_invalid - remove invalid modes from mode list |
1096 | * @dev: DRM device |
1096 | * @dev: DRM device |
1097 | * @mode_list: list of modes to check |
1097 | * @mode_list: list of modes to check |
1098 | * @verbose: be verbose about it |
1098 | * @verbose: be verbose about it |
1099 | * |
1099 | * |
1100 | * This helper function can be used to prune a display mode list after |
1100 | * This helper function can be used to prune a display mode list after |
1101 | * validation has been completed. All modes who's status is not MODE_OK will be |
1101 | * validation has been completed. All modes who's status is not MODE_OK will be |
1102 | * removed from the list, and if @verbose the status code and mode name is also |
1102 | * removed from the list, and if @verbose the status code and mode name is also |
1103 | * printed to dmesg. |
1103 | * printed to dmesg. |
1104 | */ |
1104 | */ |
1105 | void drm_mode_prune_invalid(struct drm_device *dev, |
1105 | void drm_mode_prune_invalid(struct drm_device *dev, |
1106 | struct list_head *mode_list, bool verbose) |
1106 | struct list_head *mode_list, bool verbose) |
1107 | { |
1107 | { |
1108 | struct drm_display_mode *mode, *t; |
1108 | struct drm_display_mode *mode, *t; |
1109 | 1109 | ||
1110 | list_for_each_entry_safe(mode, t, mode_list, head) { |
1110 | list_for_each_entry_safe(mode, t, mode_list, head) { |
1111 | if (mode->status != MODE_OK) { |
1111 | if (mode->status != MODE_OK) { |
1112 | list_del(&mode->head); |
1112 | list_del(&mode->head); |
1113 | if (verbose) { |
1113 | if (verbose) { |
1114 | drm_mode_debug_printmodeline(mode); |
1114 | drm_mode_debug_printmodeline(mode); |
1115 | DRM_DEBUG_KMS("Not using %s mode: %s\n", |
1115 | DRM_DEBUG_KMS("Not using %s mode: %s\n", |
1116 | mode->name, |
1116 | mode->name, |
1117 | drm_get_mode_status_name(mode->status)); |
1117 | drm_get_mode_status_name(mode->status)); |
1118 | } |
1118 | } |
1119 | drm_mode_destroy(dev, mode); |
1119 | drm_mode_destroy(dev, mode); |
1120 | } |
1120 | } |
1121 | } |
1121 | } |
1122 | } |
1122 | } |
1123 | EXPORT_SYMBOL(drm_mode_prune_invalid); |
1123 | EXPORT_SYMBOL(drm_mode_prune_invalid); |
1124 | 1124 | ||
1125 | /** |
1125 | /** |
1126 | * drm_mode_compare - compare modes for favorability |
1126 | * drm_mode_compare - compare modes for favorability |
1127 | * @priv: unused |
1127 | * @priv: unused |
1128 | * @lh_a: list_head for first mode |
1128 | * @lh_a: list_head for first mode |
1129 | * @lh_b: list_head for second mode |
1129 | * @lh_b: list_head for second mode |
1130 | * |
1130 | * |
1131 | * Compare two modes, given by @lh_a and @lh_b, returning a value indicating |
1131 | * Compare two modes, given by @lh_a and @lh_b, returning a value indicating |
1132 | * which is better. |
1132 | * which is better. |
1133 | * |
1133 | * |
1134 | * Returns: |
1134 | * Returns: |
1135 | * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or |
1135 | * Negative if @lh_a is better than @lh_b, zero if they're equivalent, or |
1136 | * positive if @lh_b is better than @lh_a. |
1136 | * positive if @lh_b is better than @lh_a. |
1137 | */ |
1137 | */ |
1138 | static int drm_mode_compare(void *priv, struct list_head *lh_a, struct list_head *lh_b) |
1138 | static int drm_mode_compare(void *priv, struct list_head *lh_a, struct list_head *lh_b) |
1139 | { |
1139 | { |
1140 | struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head); |
1140 | struct drm_display_mode *a = list_entry(lh_a, struct drm_display_mode, head); |
1141 | struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head); |
1141 | struct drm_display_mode *b = list_entry(lh_b, struct drm_display_mode, head); |
1142 | int diff; |
1142 | int diff; |
1143 | 1143 | ||
1144 | diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) - |
1144 | diff = ((b->type & DRM_MODE_TYPE_PREFERRED) != 0) - |
1145 | ((a->type & DRM_MODE_TYPE_PREFERRED) != 0); |
1145 | ((a->type & DRM_MODE_TYPE_PREFERRED) != 0); |
1146 | if (diff) |
1146 | if (diff) |
1147 | return diff; |
1147 | return diff; |
1148 | diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay; |
1148 | diff = b->hdisplay * b->vdisplay - a->hdisplay * a->vdisplay; |
1149 | if (diff) |
1149 | if (diff) |
1150 | return diff; |
1150 | return diff; |
1151 | 1151 | ||
1152 | diff = b->vrefresh - a->vrefresh; |
1152 | diff = b->vrefresh - a->vrefresh; |
1153 | if (diff) |
1153 | if (diff) |
1154 | return diff; |
1154 | return diff; |
1155 | 1155 | ||
1156 | diff = b->clock - a->clock; |
1156 | diff = b->clock - a->clock; |
1157 | return diff; |
1157 | return diff; |
1158 | } |
1158 | } |
1159 | 1159 | ||
1160 | /** |
1160 | /** |
1161 | * drm_mode_sort - sort mode list |
1161 | * drm_mode_sort - sort mode list |
1162 | * @mode_list: list of drm_display_mode structures to sort |
1162 | * @mode_list: list of drm_display_mode structures to sort |
1163 | * |
1163 | * |
1164 | * Sort @mode_list by favorability, moving good modes to the head of the list. |
1164 | * Sort @mode_list by favorability, moving good modes to the head of the list. |
1165 | */ |
1165 | */ |
1166 | void drm_mode_sort(struct list_head *mode_list) |
1166 | void drm_mode_sort(struct list_head *mode_list) |
1167 | { |
1167 | { |
1168 | list_sort(NULL, mode_list, drm_mode_compare); |
1168 | list_sort(NULL, mode_list, drm_mode_compare); |
1169 | } |
1169 | } |
1170 | EXPORT_SYMBOL(drm_mode_sort); |
1170 | EXPORT_SYMBOL(drm_mode_sort); |
1171 | 1171 | ||
1172 | /** |
1172 | /** |
1173 | * drm_mode_connector_list_update - update the mode list for the connector |
1173 | * drm_mode_connector_list_update - update the mode list for the connector |
1174 | * @connector: the connector to update |
1174 | * @connector: the connector to update |
1175 | * |
1175 | * |
1176 | * This moves the modes from the @connector probed_modes list |
1176 | * This moves the modes from the @connector probed_modes list |
1177 | * to the actual mode list. It compares the probed mode against the current |
1177 | * to the actual mode list. It compares the probed mode against the current |
1178 | * list and only adds different/new modes. |
1178 | * list and only adds different/new modes. |
1179 | * |
1179 | * |
1180 | * This is just a helper functions doesn't validate any modes itself and also |
1180 | * This is just a helper functions doesn't validate any modes itself and also |
1181 | * doesn't prune any invalid modes. Callers need to do that themselves. |
1181 | * doesn't prune any invalid modes. Callers need to do that themselves. |
1182 | */ |
1182 | */ |
1183 | void drm_mode_connector_list_update(struct drm_connector *connector) |
1183 | void drm_mode_connector_list_update(struct drm_connector *connector) |
1184 | { |
1184 | { |
1185 | struct drm_display_mode *pmode, *pt; |
1185 | struct drm_display_mode *pmode, *pt; |
1186 | 1186 | ||
1187 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
1187 | WARN_ON(!mutex_is_locked(&connector->dev->mode_config.mutex)); |
1188 | 1188 | ||
1189 | list_for_each_entry_safe(pmode, pt, &connector->probed_modes, head) { |
1189 | list_for_each_entry_safe(pmode, pt, &connector->probed_modes, head) { |
1190 | struct drm_display_mode *mode; |
1190 | struct drm_display_mode *mode; |
1191 | bool found_it = false; |
1191 | bool found_it = false; |
1192 | 1192 | ||
1193 | /* go through current modes checking for the new probed mode */ |
1193 | /* go through current modes checking for the new probed mode */ |
1194 | list_for_each_entry(mode, &connector->modes, head) { |
1194 | list_for_each_entry(mode, &connector->modes, head) { |
1195 | if (!drm_mode_equal(pmode, mode)) |
1195 | if (!drm_mode_equal(pmode, mode)) |
1196 | continue; |
1196 | continue; |
1197 | 1197 | ||
1198 | found_it = true; |
1198 | found_it = true; |
1199 | 1199 | ||
1200 | /* |
1200 | /* |
1201 | * If the old matching mode is stale (ie. left over |
1201 | * If the old matching mode is stale (ie. left over |
1202 | * from a previous probe) just replace it outright. |
1202 | * from a previous probe) just replace it outright. |
1203 | * Otherwise just merge the type bits between all |
1203 | * Otherwise just merge the type bits between all |
1204 | * equal probed modes. |
1204 | * equal probed modes. |
1205 | * |
1205 | * |
1206 | * If two probed modes are considered equal, pick the |
1206 | * If two probed modes are considered equal, pick the |
1207 | * actual timings from the one that's marked as |
1207 | * actual timings from the one that's marked as |
1208 | * preferred (in case the match isn't 100%). If |
1208 | * preferred (in case the match isn't 100%). If |
1209 | * multiple or zero preferred modes are present, favor |
1209 | * multiple or zero preferred modes are present, favor |
1210 | * the mode added to the probed_modes list first. |
1210 | * the mode added to the probed_modes list first. |
1211 | */ |
1211 | */ |
1212 | if (mode->status == MODE_STALE) { |
1212 | if (mode->status == MODE_STALE) { |
1213 | drm_mode_copy(mode, pmode); |
1213 | drm_mode_copy(mode, pmode); |
1214 | } else if ((mode->type & DRM_MODE_TYPE_PREFERRED) == 0 && |
1214 | } else if ((mode->type & DRM_MODE_TYPE_PREFERRED) == 0 && |
1215 | (pmode->type & DRM_MODE_TYPE_PREFERRED) != 0) { |
1215 | (pmode->type & DRM_MODE_TYPE_PREFERRED) != 0) { |
1216 | pmode->type |= mode->type; |
1216 | pmode->type |= mode->type; |
1217 | drm_mode_copy(mode, pmode); |
1217 | drm_mode_copy(mode, pmode); |
1218 | } else { |
1218 | } else { |
1219 | mode->type |= pmode->type; |
1219 | mode->type |= pmode->type; |
1220 | } |
1220 | } |
1221 | 1221 | ||
1222 | list_del(&pmode->head); |
1222 | list_del(&pmode->head); |
1223 | drm_mode_destroy(connector->dev, pmode); |
1223 | drm_mode_destroy(connector->dev, pmode); |
1224 | break; |
1224 | break; |
1225 | } |
1225 | } |
1226 | 1226 | ||
1227 | if (!found_it) { |
1227 | if (!found_it) { |
1228 | list_move_tail(&pmode->head, &connector->modes); |
1228 | list_move_tail(&pmode->head, &connector->modes); |
1229 | } |
1229 | } |
1230 | } |
1230 | } |
1231 | } |
1231 | } |
1232 | EXPORT_SYMBOL(drm_mode_connector_list_update); |
1232 | EXPORT_SYMBOL(drm_mode_connector_list_update); |
1233 | 1233 | ||
1234 | /** |
1234 | /** |
1235 | * drm_mode_parse_command_line_for_connector - parse command line modeline for connector |
1235 | * drm_mode_parse_command_line_for_connector - parse command line modeline for connector |
1236 | * @mode_option: optional per connector mode option |
1236 | * @mode_option: optional per connector mode option |
1237 | * @connector: connector to parse modeline for |
1237 | * @connector: connector to parse modeline for |
1238 | * @mode: preallocated drm_cmdline_mode structure to fill out |
1238 | * @mode: preallocated drm_cmdline_mode structure to fill out |
1239 | * |
1239 | * |
1240 | * This parses @mode_option command line modeline for modes and options to |
1240 | * This parses @mode_option command line modeline for modes and options to |
1241 | * configure the connector. If @mode_option is NULL the default command line |
1241 | * configure the connector. If @mode_option is NULL the default command line |
1242 | * modeline in fb_mode_option will be parsed instead. |
1242 | * modeline in fb_mode_option will be parsed instead. |
1243 | * |
1243 | * |
1244 | * This uses the same parameters as the fb modedb.c, except for an extra |
1244 | * This uses the same parameters as the fb modedb.c, except for an extra |
1245 | * force-enable, force-enable-digital and force-disable bit at the end: |
1245 | * force-enable, force-enable-digital and force-disable bit at the end: |
1246 | * |
1246 | * |
1247 | * |
1247 | * |
1248 | * |
1248 | * |
1249 | * The intermediate drm_cmdline_mode structure is required to store additional |
1249 | * The intermediate drm_cmdline_mode structure is required to store additional |
1250 | * options from the command line modline like the force-enable/disable flag. |
1250 | * options from the command line modline like the force-enable/disable flag. |
1251 | * |
1251 | * |
1252 | * Returns: |
1252 | * Returns: |
1253 | * True if a valid modeline has been parsed, false otherwise. |
1253 | * True if a valid modeline has been parsed, false otherwise. |
1254 | */ |
1254 | */ |
1255 | bool drm_mode_parse_command_line_for_connector(const char *mode_option, |
1255 | bool drm_mode_parse_command_line_for_connector(const char *mode_option, |
1256 | struct drm_connector *connector, |
1256 | struct drm_connector *connector, |
1257 | struct drm_cmdline_mode *mode) |
1257 | struct drm_cmdline_mode *mode) |
1258 | { |
1258 | { |
1259 | const char *name; |
1259 | const char *name; |
1260 | unsigned int namelen; |
1260 | unsigned int namelen; |
1261 | bool res_specified = false, bpp_specified = false, refresh_specified = false; |
1261 | bool res_specified = false, bpp_specified = false, refresh_specified = false; |
1262 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; |
1262 | unsigned int xres = 0, yres = 0, bpp = 32, refresh = 0; |
1263 | bool yres_specified = false, cvt = false, rb = false; |
1263 | bool yres_specified = false, cvt = false, rb = false; |
1264 | bool interlace = false, margins = false, was_digit = false; |
1264 | bool interlace = false, margins = false, was_digit = false; |
1265 | int i; |
1265 | int i; |
1266 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; |
1266 | enum drm_connector_force force = DRM_FORCE_UNSPECIFIED; |
1267 | 1267 | ||
1268 | #ifdef CONFIG_FB |
1268 | #ifdef CONFIG_FB |
1269 | if (!mode_option) |
1269 | if (!mode_option) |
1270 | mode_option = fb_mode_option; |
1270 | mode_option = fb_mode_option; |
1271 | #endif |
1271 | #endif |
1272 | 1272 | ||
1273 | if (!mode_option) { |
1273 | if (!mode_option) { |
1274 | mode->specified = false; |
1274 | mode->specified = false; |
1275 | return false; |
1275 | return false; |
1276 | } |
1276 | } |
1277 | 1277 | ||
1278 | name = mode_option; |
1278 | name = mode_option; |
1279 | namelen = strlen(name); |
1279 | namelen = strlen(name); |
1280 | for (i = namelen-1; i >= 0; i--) { |
1280 | for (i = namelen-1; i >= 0; i--) { |
1281 | switch (name[i]) { |
1281 | switch (name[i]) { |
1282 | case '@': |
1282 | case '@': |
1283 | if (!refresh_specified && !bpp_specified && |
1283 | if (!refresh_specified && !bpp_specified && |
1284 | !yres_specified && !cvt && !rb && was_digit) { |
1284 | !yres_specified && !cvt && !rb && was_digit) { |
1285 | refresh = simple_strtol(&name[i+1], NULL, 10); |
1285 | refresh = simple_strtol(&name[i+1], NULL, 10); |
1286 | refresh_specified = true; |
1286 | refresh_specified = true; |
1287 | was_digit = false; |
1287 | was_digit = false; |
1288 | } else |
1288 | } else |
1289 | goto done; |
1289 | goto done; |
1290 | break; |
1290 | break; |
1291 | case '-': |
1291 | case '-': |
1292 | if (!bpp_specified && !yres_specified && !cvt && |
1292 | if (!bpp_specified && !yres_specified && !cvt && |
1293 | !rb && was_digit) { |
1293 | !rb && was_digit) { |
1294 | bpp = simple_strtol(&name[i+1], NULL, 10); |
1294 | bpp = simple_strtol(&name[i+1], NULL, 10); |
1295 | bpp_specified = true; |
1295 | bpp_specified = true; |
1296 | was_digit = false; |
1296 | was_digit = false; |
1297 | } else |
1297 | } else |
1298 | goto done; |
1298 | goto done; |
1299 | break; |
1299 | break; |
1300 | case 'x': |
1300 | case 'x': |
1301 | if (!yres_specified && was_digit) { |
1301 | if (!yres_specified && was_digit) { |
1302 | yres = simple_strtol(&name[i+1], NULL, 10); |
1302 | yres = simple_strtol(&name[i+1], NULL, 10); |
1303 | yres_specified = true; |
1303 | yres_specified = true; |
1304 | was_digit = false; |
1304 | was_digit = false; |
1305 | } else |
1305 | } else |
1306 | goto done; |
1306 | goto done; |
1307 | break; |
1307 | break; |
1308 | case '0' ... '9': |
1308 | case '0' ... '9': |
1309 | was_digit = true; |
1309 | was_digit = true; |
1310 | break; |
1310 | break; |
1311 | case 'M': |
1311 | case 'M': |
1312 | if (yres_specified || cvt || was_digit) |
1312 | if (yres_specified || cvt || was_digit) |
1313 | goto done; |
1313 | goto done; |
1314 | cvt = true; |
1314 | cvt = true; |
1315 | break; |
1315 | break; |
1316 | case 'R': |
1316 | case 'R': |
1317 | if (yres_specified || cvt || rb || was_digit) |
1317 | if (yres_specified || cvt || rb || was_digit) |
1318 | goto done; |
1318 | goto done; |
1319 | rb = true; |
1319 | rb = true; |
1320 | break; |
1320 | break; |
1321 | case 'm': |
1321 | case 'm': |
1322 | if (cvt || yres_specified || was_digit) |
1322 | if (cvt || yres_specified || was_digit) |
1323 | goto done; |
1323 | goto done; |
1324 | margins = true; |
1324 | margins = true; |
1325 | break; |
1325 | break; |
1326 | case 'i': |
1326 | case 'i': |
1327 | if (cvt || yres_specified || was_digit) |
1327 | if (cvt || yres_specified || was_digit) |
1328 | goto done; |
1328 | goto done; |
1329 | interlace = true; |
1329 | interlace = true; |
1330 | break; |
1330 | break; |
1331 | case 'e': |
1331 | case 'e': |
1332 | if (yres_specified || bpp_specified || refresh_specified || |
1332 | if (yres_specified || bpp_specified || refresh_specified || |
1333 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
1333 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
1334 | goto done; |
1334 | goto done; |
1335 | 1335 | ||
1336 | force = DRM_FORCE_ON; |
1336 | force = DRM_FORCE_ON; |
1337 | break; |
1337 | break; |
1338 | case 'D': |
1338 | case 'D': |
1339 | if (yres_specified || bpp_specified || refresh_specified || |
1339 | if (yres_specified || bpp_specified || refresh_specified || |
1340 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
1340 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
1341 | goto done; |
1341 | goto done; |
1342 | 1342 | ||
1343 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
1343 | if ((connector->connector_type != DRM_MODE_CONNECTOR_DVII) && |
1344 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
1344 | (connector->connector_type != DRM_MODE_CONNECTOR_HDMIB)) |
1345 | force = DRM_FORCE_ON; |
1345 | force = DRM_FORCE_ON; |
1346 | else |
1346 | else |
1347 | force = DRM_FORCE_ON_DIGITAL; |
1347 | force = DRM_FORCE_ON_DIGITAL; |
1348 | break; |
1348 | break; |
1349 | case 'd': |
1349 | case 'd': |
1350 | if (yres_specified || bpp_specified || refresh_specified || |
1350 | if (yres_specified || bpp_specified || refresh_specified || |
1351 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
1351 | was_digit || (force != DRM_FORCE_UNSPECIFIED)) |
1352 | goto done; |
1352 | goto done; |
1353 | 1353 | ||
1354 | force = DRM_FORCE_OFF; |
1354 | force = DRM_FORCE_OFF; |
1355 | break; |
1355 | break; |
1356 | default: |
1356 | default: |
1357 | goto done; |
1357 | goto done; |
1358 | } |
1358 | } |
1359 | } |
1359 | } |
1360 | 1360 | ||
1361 | if (i < 0 && yres_specified) { |
1361 | if (i < 0 && yres_specified) { |
1362 | char *ch; |
1362 | char *ch; |
1363 | xres = simple_strtol(name, &ch, 10); |
1363 | xres = simple_strtol(name, &ch, 10); |
1364 | if ((ch != NULL) && (*ch == 'x')) |
1364 | if ((ch != NULL) && (*ch == 'x')) |
1365 | res_specified = true; |
1365 | res_specified = true; |
1366 | else |
1366 | else |
1367 | i = ch - name; |
1367 | i = ch - name; |
1368 | } else if (!yres_specified && was_digit) { |
1368 | } else if (!yres_specified && was_digit) { |
1369 | /* catch mode that begins with digits but has no 'x' */ |
1369 | /* catch mode that begins with digits but has no 'x' */ |
1370 | i = 0; |
1370 | i = 0; |
1371 | } |
1371 | } |
1372 | done: |
1372 | done: |
1373 | if (i >= 0) { |
1373 | if (i >= 0) { |
1374 | printk(KERN_WARNING |
- | |
1375 | "parse error at position %i in video mode '%s'\n", |
1374 | pr_warn("[drm] parse error at position %i in video mode '%s'\n", |
1376 | i, name); |
1375 | i, name); |
1377 | mode->specified = false; |
1376 | mode->specified = false; |
1378 | return false; |
1377 | return false; |
1379 | } |
1378 | } |
1380 | 1379 | ||
1381 | if (res_specified) { |
1380 | if (res_specified) { |
1382 | mode->specified = true; |
1381 | mode->specified = true; |
1383 | mode->xres = xres; |
1382 | mode->xres = xres; |
1384 | mode->yres = yres; |
1383 | mode->yres = yres; |
1385 | } |
1384 | } |
1386 | 1385 | ||
1387 | if (refresh_specified) { |
1386 | if (refresh_specified) { |
1388 | mode->refresh_specified = true; |
1387 | mode->refresh_specified = true; |
1389 | mode->refresh = refresh; |
1388 | mode->refresh = refresh; |
1390 | } |
1389 | } |
1391 | 1390 | ||
1392 | if (bpp_specified) { |
1391 | if (bpp_specified) { |
1393 | mode->bpp_specified = true; |
1392 | mode->bpp_specified = true; |
1394 | mode->bpp = bpp; |
1393 | mode->bpp = bpp; |
1395 | } |
1394 | } |
1396 | mode->rb = rb; |
1395 | mode->rb = rb; |
1397 | mode->cvt = cvt; |
1396 | mode->cvt = cvt; |
1398 | mode->interlace = interlace; |
1397 | mode->interlace = interlace; |
1399 | mode->margins = margins; |
1398 | mode->margins = margins; |
1400 | mode->force = force; |
1399 | mode->force = force; |
1401 | 1400 | ||
1402 | return true; |
1401 | return true; |
1403 | } |
1402 | } |
1404 | EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); |
1403 | EXPORT_SYMBOL(drm_mode_parse_command_line_for_connector); |
1405 | 1404 | ||
1406 | /** |
1405 | /** |
1407 | * drm_mode_create_from_cmdline_mode - convert a command line modeline into a DRM display mode |
1406 | * drm_mode_create_from_cmdline_mode - convert a command line modeline into a DRM display mode |
1408 | * @dev: DRM device to create the new mode for |
1407 | * @dev: DRM device to create the new mode for |
1409 | * @cmd: input command line modeline |
1408 | * @cmd: input command line modeline |
1410 | * |
1409 | * |
1411 | * Returns: |
1410 | * Returns: |
1412 | * Pointer to converted mode on success, NULL on error. |
1411 | * Pointer to converted mode on success, NULL on error. |
1413 | */ |
1412 | */ |
1414 | struct drm_display_mode * |
1413 | struct drm_display_mode * |
1415 | drm_mode_create_from_cmdline_mode(struct drm_device *dev, |
1414 | drm_mode_create_from_cmdline_mode(struct drm_device *dev, |
1416 | struct drm_cmdline_mode *cmd) |
1415 | struct drm_cmdline_mode *cmd) |
1417 | { |
1416 | { |
1418 | struct drm_display_mode *mode; |
1417 | struct drm_display_mode *mode; |
1419 | 1418 | ||
1420 | if (cmd->cvt) |
1419 | if (cmd->cvt) |
1421 | mode = drm_cvt_mode(dev, |
1420 | mode = drm_cvt_mode(dev, |
1422 | cmd->xres, cmd->yres, |
1421 | cmd->xres, cmd->yres, |
1423 | cmd->refresh_specified ? cmd->refresh : 60, |
1422 | cmd->refresh_specified ? cmd->refresh : 60, |
1424 | cmd->rb, cmd->interlace, |
1423 | cmd->rb, cmd->interlace, |
1425 | cmd->margins); |
1424 | cmd->margins); |
1426 | else |
1425 | else |
1427 | mode = drm_gtf_mode(dev, |
1426 | mode = drm_gtf_mode(dev, |
1428 | cmd->xres, cmd->yres, |
1427 | cmd->xres, cmd->yres, |
1429 | cmd->refresh_specified ? cmd->refresh : 60, |
1428 | cmd->refresh_specified ? cmd->refresh : 60, |
1430 | cmd->interlace, |
1429 | cmd->interlace, |
1431 | cmd->margins); |
1430 | cmd->margins); |
1432 | if (!mode) |
1431 | if (!mode) |
1433 | return NULL; |
1432 | return NULL; |
1434 | 1433 | ||
1435 | mode->type |= DRM_MODE_TYPE_USERDEF; |
1434 | mode->type |= DRM_MODE_TYPE_USERDEF; |
1436 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
1435 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
1437 | return mode; |
1436 | return mode; |
1438 | } |
1437 | } |
1439 | EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); |
1438 | EXPORT_SYMBOL(drm_mode_create_from_cmdline_mode); |
1440 | 1439 | ||
1441 | /** |
1440 | /** |
1442 | * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo |
1441 | * drm_crtc_convert_to_umode - convert a drm_display_mode into a modeinfo |
1443 | * @out: drm_mode_modeinfo struct to return to the user |
1442 | * @out: drm_mode_modeinfo struct to return to the user |
1444 | * @in: drm_display_mode to use |
1443 | * @in: drm_display_mode to use |
1445 | * |
1444 | * |
1446 | * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to |
1445 | * Convert a drm_display_mode into a drm_mode_modeinfo structure to return to |
1447 | * the user. |
1446 | * the user. |
1448 | */ |
1447 | */ |
1449 | void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, |
1448 | void drm_mode_convert_to_umode(struct drm_mode_modeinfo *out, |
1450 | const struct drm_display_mode *in) |
1449 | const struct drm_display_mode *in) |
1451 | { |
1450 | { |
1452 | WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || |
1451 | WARN(in->hdisplay > USHRT_MAX || in->hsync_start > USHRT_MAX || |
1453 | in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || |
1452 | in->hsync_end > USHRT_MAX || in->htotal > USHRT_MAX || |
1454 | in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || |
1453 | in->hskew > USHRT_MAX || in->vdisplay > USHRT_MAX || |
1455 | in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || |
1454 | in->vsync_start > USHRT_MAX || in->vsync_end > USHRT_MAX || |
1456 | in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, |
1455 | in->vtotal > USHRT_MAX || in->vscan > USHRT_MAX, |
1457 | "timing values too large for mode info\n"); |
1456 | "timing values too large for mode info\n"); |
1458 | 1457 | ||
1459 | out->clock = in->clock; |
1458 | out->clock = in->clock; |
1460 | out->hdisplay = in->hdisplay; |
1459 | out->hdisplay = in->hdisplay; |
1461 | out->hsync_start = in->hsync_start; |
1460 | out->hsync_start = in->hsync_start; |
1462 | out->hsync_end = in->hsync_end; |
1461 | out->hsync_end = in->hsync_end; |
1463 | out->htotal = in->htotal; |
1462 | out->htotal = in->htotal; |
1464 | out->hskew = in->hskew; |
1463 | out->hskew = in->hskew; |
1465 | out->vdisplay = in->vdisplay; |
1464 | out->vdisplay = in->vdisplay; |
1466 | out->vsync_start = in->vsync_start; |
1465 | out->vsync_start = in->vsync_start; |
1467 | out->vsync_end = in->vsync_end; |
1466 | out->vsync_end = in->vsync_end; |
1468 | out->vtotal = in->vtotal; |
1467 | out->vtotal = in->vtotal; |
1469 | out->vscan = in->vscan; |
1468 | out->vscan = in->vscan; |
1470 | out->vrefresh = in->vrefresh; |
1469 | out->vrefresh = in->vrefresh; |
1471 | out->flags = in->flags; |
1470 | out->flags = in->flags; |
1472 | out->type = in->type; |
1471 | out->type = in->type; |
1473 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
1472 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
1474 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
1473 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
1475 | } |
1474 | } |
1476 | 1475 | ||
1477 | /** |
1476 | /** |
1478 | * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode |
1477 | * drm_crtc_convert_umode - convert a modeinfo into a drm_display_mode |
1479 | * @out: drm_display_mode to return to the user |
1478 | * @out: drm_display_mode to return to the user |
1480 | * @in: drm_mode_modeinfo to use |
1479 | * @in: drm_mode_modeinfo to use |
1481 | * |
1480 | * |
1482 | * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to |
1481 | * Convert a drm_mode_modeinfo into a drm_display_mode structure to return to |
1483 | * the caller. |
1482 | * the caller. |
1484 | * |
1483 | * |
1485 | * Returns: |
1484 | * Returns: |
1486 | * Zero on success, negative errno on failure. |
1485 | * Zero on success, negative errno on failure. |
1487 | */ |
1486 | */ |
1488 | int drm_mode_convert_umode(struct drm_display_mode *out, |
1487 | int drm_mode_convert_umode(struct drm_display_mode *out, |
1489 | const struct drm_mode_modeinfo *in) |
1488 | const struct drm_mode_modeinfo *in) |
1490 | { |
1489 | { |
1491 | int ret = -EINVAL; |
1490 | int ret = -EINVAL; |
1492 | 1491 | ||
1493 | if (in->clock > INT_MAX || in->vrefresh > INT_MAX) { |
1492 | if (in->clock > INT_MAX || in->vrefresh > INT_MAX) { |
1494 | ret = -ERANGE; |
1493 | ret = -ERANGE; |
1495 | goto out; |
1494 | goto out; |
1496 | } |
1495 | } |
1497 | 1496 | ||
1498 | if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) |
1497 | if ((in->flags & DRM_MODE_FLAG_3D_MASK) > DRM_MODE_FLAG_3D_MAX) |
1499 | goto out; |
1498 | goto out; |
1500 | 1499 | ||
1501 | out->clock = in->clock; |
1500 | out->clock = in->clock; |
1502 | out->hdisplay = in->hdisplay; |
1501 | out->hdisplay = in->hdisplay; |
1503 | out->hsync_start = in->hsync_start; |
1502 | out->hsync_start = in->hsync_start; |
1504 | out->hsync_end = in->hsync_end; |
1503 | out->hsync_end = in->hsync_end; |
1505 | out->htotal = in->htotal; |
1504 | out->htotal = in->htotal; |
1506 | out->hskew = in->hskew; |
1505 | out->hskew = in->hskew; |
1507 | out->vdisplay = in->vdisplay; |
1506 | out->vdisplay = in->vdisplay; |
1508 | out->vsync_start = in->vsync_start; |
1507 | out->vsync_start = in->vsync_start; |
1509 | out->vsync_end = in->vsync_end; |
1508 | out->vsync_end = in->vsync_end; |
1510 | out->vtotal = in->vtotal; |
1509 | out->vtotal = in->vtotal; |
1511 | out->vscan = in->vscan; |
1510 | out->vscan = in->vscan; |
1512 | out->vrefresh = in->vrefresh; |
1511 | out->vrefresh = in->vrefresh; |
1513 | out->flags = in->flags; |
1512 | out->flags = in->flags; |
1514 | out->type = in->type; |
1513 | out->type = in->type; |
1515 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
1514 | strncpy(out->name, in->name, DRM_DISPLAY_MODE_LEN); |
1516 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
1515 | out->name[DRM_DISPLAY_MODE_LEN-1] = 0; |
1517 | 1516 | ||
1518 | out->status = drm_mode_validate_basic(out); |
1517 | out->status = drm_mode_validate_basic(out); |
1519 | if (out->status != MODE_OK) |
1518 | if (out->status != MODE_OK) |
1520 | goto out; |
1519 | goto out; |
- | 1520 | ||
- | 1521 | drm_mode_set_crtcinfo(out, CRTC_INTERLACE_HALVE_V); |
|
1521 | 1522 | ||
1522 | ret = 0; |
1523 | ret = 0; |
1523 | 1524 | ||
1524 | out: |
1525 | out: |
1525 | return ret; |
1526 | return ret; |
1526 | }>>>>>>>>>>>> |
1527 | }>>>>>>>>>>>> |