1/*
2 * Copyright 2007-8 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Authors: Dave Airlie
24 * Alex Deucher
25 */
26
27#include <drm/amdgpu_drm.h>
28#include "amdgpu.h"
29#include "amdgpu_connectors.h"
30#include "amdgpu_display.h"
31#include "atom.h"
32#include "atombios_encoders.h"
33
34void
35amdgpu_link_encoder_connector(struct drm_device *dev)
36{
37 struct amdgpu_device *adev = drm_to_adev(ddev: dev);
38 struct drm_connector *connector;
39 struct drm_connector_list_iter iter;
40 struct amdgpu_connector *amdgpu_connector;
41 struct drm_encoder *encoder;
42 struct amdgpu_encoder *amdgpu_encoder;
43
44 drm_connector_list_iter_begin(dev, iter: &iter);
45 /* walk the list and link encoders to connectors */
46 drm_for_each_connector_iter(connector, &iter) {
47 amdgpu_connector = to_amdgpu_connector(connector);
48 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
49 amdgpu_encoder = to_amdgpu_encoder(encoder);
50 if (amdgpu_encoder->devices & amdgpu_connector->devices) {
51 drm_connector_attach_encoder(connector, encoder);
52 if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
53 amdgpu_atombios_encoder_init_backlight(amdgpu_encoder, drm_connector: connector);
54 adev->mode_info.bl_encoder = amdgpu_encoder;
55 }
56 }
57 }
58 }
59 drm_connector_list_iter_end(iter: &iter);
60}
61
62void amdgpu_encoder_set_active_device(struct drm_encoder *encoder)
63{
64 struct drm_device *dev = encoder->dev;
65 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
66 struct drm_connector *connector;
67 struct drm_connector_list_iter iter;
68
69 drm_connector_list_iter_begin(dev, iter: &iter);
70 drm_for_each_connector_iter(connector, &iter) {
71 if (connector->encoder == encoder) {
72 struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
73
74 amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices;
75 DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
76 amdgpu_encoder->active_device, amdgpu_encoder->devices,
77 amdgpu_connector->devices, encoder->encoder_type);
78 }
79 }
80 drm_connector_list_iter_end(iter: &iter);
81}
82
83struct drm_connector *
84amdgpu_get_connector_for_encoder(struct drm_encoder *encoder)
85{
86 struct drm_device *dev = encoder->dev;
87 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
88 struct drm_connector *connector, *found = NULL;
89 struct drm_connector_list_iter iter;
90 struct amdgpu_connector *amdgpu_connector;
91
92 drm_connector_list_iter_begin(dev, iter: &iter);
93 drm_for_each_connector_iter(connector, &iter) {
94 amdgpu_connector = to_amdgpu_connector(connector);
95 if (amdgpu_encoder->active_device & amdgpu_connector->devices) {
96 found = connector;
97 break;
98 }
99 }
100 drm_connector_list_iter_end(iter: &iter);
101 return found;
102}
103
104struct drm_connector *
105amdgpu_get_connector_for_encoder_init(struct drm_encoder *encoder)
106{
107 struct drm_device *dev = encoder->dev;
108 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
109 struct drm_connector *connector, *found = NULL;
110 struct drm_connector_list_iter iter;
111 struct amdgpu_connector *amdgpu_connector;
112
113 drm_connector_list_iter_begin(dev, iter: &iter);
114 drm_for_each_connector_iter(connector, &iter) {
115 amdgpu_connector = to_amdgpu_connector(connector);
116 if (amdgpu_encoder->devices & amdgpu_connector->devices) {
117 found = connector;
118 break;
119 }
120 }
121 drm_connector_list_iter_end(iter: &iter);
122 return found;
123}
124
125struct drm_encoder *amdgpu_get_external_encoder(struct drm_encoder *encoder)
126{
127 struct drm_device *dev = encoder->dev;
128 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
129 struct drm_encoder *other_encoder;
130 struct amdgpu_encoder *other_amdgpu_encoder;
131
132 if (amdgpu_encoder->is_ext_encoder)
133 return NULL;
134
135 list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
136 if (other_encoder == encoder)
137 continue;
138 other_amdgpu_encoder = to_amdgpu_encoder(other_encoder);
139 if (other_amdgpu_encoder->is_ext_encoder &&
140 (amdgpu_encoder->devices & other_amdgpu_encoder->devices))
141 return other_encoder;
142 }
143 return NULL;
144}
145
146u16 amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
147{
148 struct drm_encoder *other_encoder = amdgpu_get_external_encoder(encoder);
149
150 if (other_encoder) {
151 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(other_encoder);
152
153 switch (amdgpu_encoder->encoder_id) {
154 case ENCODER_OBJECT_ID_TRAVIS:
155 case ENCODER_OBJECT_ID_NUTMEG:
156 return amdgpu_encoder->encoder_id;
157 default:
158 return ENCODER_OBJECT_ID_NONE;
159 }
160 }
161 return ENCODER_OBJECT_ID_NONE;
162}
163
164void amdgpu_panel_mode_fixup(struct drm_encoder *encoder,
165 struct drm_display_mode *adjusted_mode)
166{
167 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
168 struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
169 unsigned int hblank = native_mode->htotal - native_mode->hdisplay;
170 unsigned int vblank = native_mode->vtotal - native_mode->vdisplay;
171 unsigned int hover = native_mode->hsync_start - native_mode->hdisplay;
172 unsigned int vover = native_mode->vsync_start - native_mode->vdisplay;
173 unsigned int hsync_width = native_mode->hsync_end - native_mode->hsync_start;
174 unsigned int vsync_width = native_mode->vsync_end - native_mode->vsync_start;
175
176 adjusted_mode->clock = native_mode->clock;
177 adjusted_mode->flags = native_mode->flags;
178
179 adjusted_mode->hdisplay = native_mode->hdisplay;
180 adjusted_mode->vdisplay = native_mode->vdisplay;
181
182 adjusted_mode->htotal = native_mode->hdisplay + hblank;
183 adjusted_mode->hsync_start = native_mode->hdisplay + hover;
184 adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
185
186 adjusted_mode->vtotal = native_mode->vdisplay + vblank;
187 adjusted_mode->vsync_start = native_mode->vdisplay + vover;
188 adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
189
190 drm_mode_set_crtcinfo(p: adjusted_mode, CRTC_INTERLACE_HALVE_V);
191
192 adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
193 adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
194
195 adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
196 adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
197 adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
198
199 adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
200 adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
201 adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
202
203}
204
205bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder,
206 u32 pixel_clock)
207{
208 struct drm_connector *connector;
209 struct amdgpu_connector *amdgpu_connector;
210 struct amdgpu_connector_atom_dig *dig_connector;
211
212 connector = amdgpu_get_connector_for_encoder(encoder);
213 /* if we don't have an active device yet, just use one of
214 * the connectors tied to the encoder.
215 */
216 if (!connector)
217 connector = amdgpu_get_connector_for_encoder_init(encoder);
218 amdgpu_connector = to_amdgpu_connector(connector);
219
220 switch (connector->connector_type) {
221 case DRM_MODE_CONNECTOR_DVII:
222 case DRM_MODE_CONNECTOR_HDMIB:
223 if (amdgpu_connector->use_digital) {
224 /* HDMI 1.3 supports up to 340 Mhz over single link */
225 if (connector->display_info.is_hdmi) {
226 if (pixel_clock > 340000)
227 return true;
228 else
229 return false;
230 } else {
231 if (pixel_clock > 165000)
232 return true;
233 else
234 return false;
235 }
236 } else
237 return false;
238 case DRM_MODE_CONNECTOR_DVID:
239 case DRM_MODE_CONNECTOR_HDMIA:
240 case DRM_MODE_CONNECTOR_DisplayPort:
241 dig_connector = amdgpu_connector->con_priv;
242 if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
243 (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
244 return false;
245 else {
246 /* HDMI 1.3 supports up to 340 Mhz over single link */
247 if (connector->display_info.is_hdmi) {
248 if (pixel_clock > 340000)
249 return true;
250 else
251 return false;
252 } else {
253 if (pixel_clock > 165000)
254 return true;
255 else
256 return false;
257 }
258 }
259 default:
260 return false;
261 }
262}
263

source code of linux/drivers/gpu/drm/amd/amdgpu/amdgpu_encoders.c