1 /* $NetBSD: amdgpu_encoders.c,v 1.3 2021/12/18 23:44:58 riastradh Exp $ */
2
3 /*
4 * Copyright 2007-8 Advanced Micro Devices, Inc.
5 * Copyright 2008 Red Hat Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 *
25 * Authors: Dave Airlie
26 * Alex Deucher
27 */
28
29 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: amdgpu_encoders.c,v 1.3 2021/12/18 23:44:58 riastradh Exp $");
31
32 #include <drm/drm_crtc_helper.h>
33 #include <drm/amdgpu_drm.h>
34 #include "amdgpu.h"
35 #include "amdgpu_connectors.h"
36 #include "amdgpu_display.h"
37 #include "atom.h"
38 #include "atombios_encoders.h"
39
40 void
amdgpu_link_encoder_connector(struct drm_device * dev)41 amdgpu_link_encoder_connector(struct drm_device *dev)
42 {
43 struct amdgpu_device *adev = dev->dev_private;
44 struct drm_connector *connector;
45 struct drm_connector_list_iter iter;
46 struct amdgpu_connector *amdgpu_connector;
47 struct drm_encoder *encoder;
48 struct amdgpu_encoder *amdgpu_encoder;
49
50 drm_connector_list_iter_begin(dev, &iter);
51 /* walk the list and link encoders to connectors */
52 drm_for_each_connector_iter(connector, &iter) {
53 amdgpu_connector = to_amdgpu_connector(connector);
54 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
55 amdgpu_encoder = to_amdgpu_encoder(encoder);
56 if (amdgpu_encoder->devices & amdgpu_connector->devices) {
57 drm_connector_attach_encoder(connector, encoder);
58 if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
59 amdgpu_atombios_encoder_init_backlight(amdgpu_encoder, connector);
60 adev->mode_info.bl_encoder = amdgpu_encoder;
61 }
62 }
63 }
64 }
65 drm_connector_list_iter_end(&iter);
66 }
67
amdgpu_encoder_set_active_device(struct drm_encoder * encoder)68 void amdgpu_encoder_set_active_device(struct drm_encoder *encoder)
69 {
70 struct drm_device *dev = encoder->dev;
71 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
72 struct drm_connector *connector;
73 struct drm_connector_list_iter iter;
74
75 drm_connector_list_iter_begin(dev, &iter);
76 drm_for_each_connector_iter(connector, &iter) {
77 if (connector->encoder == encoder) {
78 struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
79 amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices;
80 DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
81 amdgpu_encoder->active_device, amdgpu_encoder->devices,
82 amdgpu_connector->devices, encoder->encoder_type);
83 }
84 }
85 drm_connector_list_iter_end(&iter);
86 }
87
88 struct drm_connector *
amdgpu_get_connector_for_encoder(struct drm_encoder * encoder)89 amdgpu_get_connector_for_encoder(struct drm_encoder *encoder)
90 {
91 struct drm_device *dev = encoder->dev;
92 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
93 struct drm_connector *connector, *found = NULL;
94 struct drm_connector_list_iter iter;
95 struct amdgpu_connector *amdgpu_connector;
96
97 drm_connector_list_iter_begin(dev, &iter);
98 drm_for_each_connector_iter(connector, &iter) {
99 amdgpu_connector = to_amdgpu_connector(connector);
100 if (amdgpu_encoder->active_device & amdgpu_connector->devices) {
101 found = connector;
102 break;
103 }
104 }
105 drm_connector_list_iter_end(&iter);
106 return found;
107 }
108
109 struct drm_connector *
amdgpu_get_connector_for_encoder_init(struct drm_encoder * encoder)110 amdgpu_get_connector_for_encoder_init(struct drm_encoder *encoder)
111 {
112 struct drm_device *dev = encoder->dev;
113 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
114 struct drm_connector *connector, *found = NULL;
115 struct drm_connector_list_iter iter;
116 struct amdgpu_connector *amdgpu_connector;
117
118 drm_connector_list_iter_begin(dev, &iter);
119 drm_for_each_connector_iter(connector, &iter) {
120 amdgpu_connector = to_amdgpu_connector(connector);
121 if (amdgpu_encoder->devices & amdgpu_connector->devices) {
122 found = connector;
123 break;
124 }
125 }
126 drm_connector_list_iter_end(&iter);
127 return found;
128 }
129
amdgpu_get_external_encoder(struct drm_encoder * encoder)130 struct drm_encoder *amdgpu_get_external_encoder(struct drm_encoder *encoder)
131 {
132 struct drm_device *dev = encoder->dev;
133 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
134 struct drm_encoder *other_encoder;
135 struct amdgpu_encoder *other_amdgpu_encoder;
136
137 if (amdgpu_encoder->is_ext_encoder)
138 return NULL;
139
140 list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
141 if (other_encoder == encoder)
142 continue;
143 other_amdgpu_encoder = to_amdgpu_encoder(other_encoder);
144 if (other_amdgpu_encoder->is_ext_encoder &&
145 (amdgpu_encoder->devices & other_amdgpu_encoder->devices))
146 return other_encoder;
147 }
148 return NULL;
149 }
150
amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder * encoder)151 u16 amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
152 {
153 struct drm_encoder *other_encoder = amdgpu_get_external_encoder(encoder);
154
155 if (other_encoder) {
156 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(other_encoder);
157
158 switch (amdgpu_encoder->encoder_id) {
159 case ENCODER_OBJECT_ID_TRAVIS:
160 case ENCODER_OBJECT_ID_NUTMEG:
161 return amdgpu_encoder->encoder_id;
162 default:
163 return ENCODER_OBJECT_ID_NONE;
164 }
165 }
166 return ENCODER_OBJECT_ID_NONE;
167 }
168
amdgpu_panel_mode_fixup(struct drm_encoder * encoder,struct drm_display_mode * adjusted_mode)169 void amdgpu_panel_mode_fixup(struct drm_encoder *encoder,
170 struct drm_display_mode *adjusted_mode)
171 {
172 struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
173 struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
174 unsigned hblank = native_mode->htotal - native_mode->hdisplay;
175 unsigned vblank = native_mode->vtotal - native_mode->vdisplay;
176 unsigned hover = native_mode->hsync_start - native_mode->hdisplay;
177 unsigned vover = native_mode->vsync_start - native_mode->vdisplay;
178 unsigned hsync_width = native_mode->hsync_end - native_mode->hsync_start;
179 unsigned vsync_width = native_mode->vsync_end - native_mode->vsync_start;
180
181 adjusted_mode->clock = native_mode->clock;
182 adjusted_mode->flags = native_mode->flags;
183
184 adjusted_mode->hdisplay = native_mode->hdisplay;
185 adjusted_mode->vdisplay = native_mode->vdisplay;
186
187 adjusted_mode->htotal = native_mode->hdisplay + hblank;
188 adjusted_mode->hsync_start = native_mode->hdisplay + hover;
189 adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
190
191 adjusted_mode->vtotal = native_mode->vdisplay + vblank;
192 adjusted_mode->vsync_start = native_mode->vdisplay + vover;
193 adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
194
195 drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
196
197 adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
198 adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
199
200 adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
201 adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
202 adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
203
204 adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
205 adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
206 adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
207
208 }
209
amdgpu_dig_monitor_is_duallink(struct drm_encoder * encoder,u32 pixel_clock)210 bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder,
211 u32 pixel_clock)
212 {
213 struct drm_connector *connector;
214 struct amdgpu_connector *amdgpu_connector;
215 struct amdgpu_connector_atom_dig *dig_connector;
216
217 connector = amdgpu_get_connector_for_encoder(encoder);
218 /* if we don't have an active device yet, just use one of
219 * the connectors tied to the encoder.
220 */
221 if (!connector)
222 connector = amdgpu_get_connector_for_encoder_init(encoder);
223 amdgpu_connector = to_amdgpu_connector(connector);
224
225 switch (connector->connector_type) {
226 case DRM_MODE_CONNECTOR_DVII:
227 case DRM_MODE_CONNECTOR_HDMIB:
228 if (amdgpu_connector->use_digital) {
229 /* HDMI 1.3 supports up to 340 Mhz over single link */
230 if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) {
231 if (pixel_clock > 340000)
232 return true;
233 else
234 return false;
235 } else {
236 if (pixel_clock > 165000)
237 return true;
238 else
239 return false;
240 }
241 } else
242 return false;
243 case DRM_MODE_CONNECTOR_DVID:
244 case DRM_MODE_CONNECTOR_HDMIA:
245 case DRM_MODE_CONNECTOR_DisplayPort:
246 dig_connector = amdgpu_connector->con_priv;
247 if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
248 (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
249 return false;
250 else {
251 /* HDMI 1.3 supports up to 340 Mhz over single link */
252 if (drm_detect_hdmi_monitor(amdgpu_connector_edid(connector))) {
253 if (pixel_clock > 340000)
254 return true;
255 else
256 return false;
257 } else {
258 if (pixel_clock > 165000)
259 return true;
260 else
261 return false;
262 }
263 }
264 default:
265 return false;
266 }
267 }
268