1 /* $NetBSD: radeon_encoders.c,v 1.3 2021/12/18 23:45:43 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: radeon_encoders.c,v 1.3 2021/12/18 23:45:43 riastradh Exp $");
31
32 #include <linux/pci.h>
33
34 #include <drm/drm_crtc_helper.h>
35 #include <drm/drm_device.h>
36 #include <drm/radeon_drm.h>
37
38 #include "radeon.h"
39 #include "atom.h"
40
41 extern void
42 radeon_legacy_backlight_init(struct radeon_encoder *radeon_encoder,
43 struct drm_connector *drm_connector);
44 extern void
45 radeon_atom_backlight_init(struct radeon_encoder *radeon_encoder,
46 struct drm_connector *drm_connector);
47
48
radeon_encoder_clones(struct drm_encoder * encoder)49 static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)
50 {
51 struct drm_device *dev = encoder->dev;
52 struct radeon_device *rdev = dev->dev_private;
53 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
54 struct drm_encoder *clone_encoder;
55 uint32_t index_mask = 0;
56 int count;
57
58 /* DIG routing gets problematic */
59 if (rdev->family >= CHIP_R600)
60 return index_mask;
61 /* LVDS/TV are too wacky */
62 if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)
63 return index_mask;
64 /* DVO requires 2x ppll clocks depending on tmds chip */
65 if (radeon_encoder->devices & ATOM_DEVICE_DFP2_SUPPORT)
66 return index_mask;
67
68 count = -1;
69 list_for_each_entry(clone_encoder, &dev->mode_config.encoder_list, head) {
70 struct radeon_encoder *radeon_clone = to_radeon_encoder(clone_encoder);
71 count++;
72
73 if (clone_encoder == encoder)
74 continue;
75 if (radeon_clone->devices & (ATOM_DEVICE_LCD_SUPPORT))
76 continue;
77 if (radeon_clone->devices & ATOM_DEVICE_DFP2_SUPPORT)
78 continue;
79 else
80 index_mask |= (1 << count);
81 }
82 return index_mask;
83 }
84
radeon_setup_encoder_clones(struct drm_device * dev)85 void radeon_setup_encoder_clones(struct drm_device *dev)
86 {
87 struct drm_encoder *encoder;
88
89 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
90 encoder->possible_clones = radeon_encoder_clones(encoder);
91 }
92 }
93
94 uint32_t
radeon_get_encoder_enum(struct drm_device * dev,uint32_t supported_device,uint8_t dac)95 radeon_get_encoder_enum(struct drm_device *dev, uint32_t supported_device, uint8_t dac)
96 {
97 struct radeon_device *rdev = dev->dev_private;
98 uint32_t ret = 0;
99
100 switch (supported_device) {
101 case ATOM_DEVICE_CRT1_SUPPORT:
102 case ATOM_DEVICE_TV1_SUPPORT:
103 case ATOM_DEVICE_TV2_SUPPORT:
104 case ATOM_DEVICE_CRT2_SUPPORT:
105 case ATOM_DEVICE_CV_SUPPORT:
106 switch (dac) {
107 case 1: /* dac a */
108 if ((rdev->family == CHIP_RS300) ||
109 (rdev->family == CHIP_RS400) ||
110 (rdev->family == CHIP_RS480))
111 ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;
112 else if (ASIC_IS_AVIVO(rdev))
113 ret = ENCODER_INTERNAL_KLDSCP_DAC1_ENUM_ID1;
114 else
115 ret = ENCODER_INTERNAL_DAC1_ENUM_ID1;
116 break;
117 case 2: /* dac b */
118 if (ASIC_IS_AVIVO(rdev))
119 ret = ENCODER_INTERNAL_KLDSCP_DAC2_ENUM_ID1;
120 else {
121 /*if (rdev->family == CHIP_R200)
122 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
123 else*/
124 ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;
125 }
126 break;
127 case 3: /* external dac */
128 if (ASIC_IS_AVIVO(rdev))
129 ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;
130 else
131 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
132 break;
133 }
134 break;
135 case ATOM_DEVICE_LCD1_SUPPORT:
136 if (ASIC_IS_AVIVO(rdev))
137 ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;
138 else
139 ret = ENCODER_INTERNAL_LVDS_ENUM_ID1;
140 break;
141 case ATOM_DEVICE_DFP1_SUPPORT:
142 if ((rdev->family == CHIP_RS300) ||
143 (rdev->family == CHIP_RS400) ||
144 (rdev->family == CHIP_RS480))
145 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
146 else if (ASIC_IS_AVIVO(rdev))
147 ret = ENCODER_INTERNAL_KLDSCP_TMDS1_ENUM_ID1;
148 else
149 ret = ENCODER_INTERNAL_TMDS1_ENUM_ID1;
150 break;
151 case ATOM_DEVICE_LCD2_SUPPORT:
152 case ATOM_DEVICE_DFP2_SUPPORT:
153 if ((rdev->family == CHIP_RS600) ||
154 (rdev->family == CHIP_RS690) ||
155 (rdev->family == CHIP_RS740))
156 ret = ENCODER_INTERNAL_DDI_ENUM_ID1;
157 else if (ASIC_IS_AVIVO(rdev))
158 ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;
159 else
160 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
161 break;
162 case ATOM_DEVICE_DFP3_SUPPORT:
163 ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;
164 break;
165 }
166
167 return ret;
168 }
169
radeon_encoder_add_backlight(struct radeon_encoder * radeon_encoder,struct drm_connector * connector)170 static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
171 struct drm_connector *connector)
172 {
173 struct drm_device *dev = radeon_encoder->base.dev;
174 struct radeon_device *rdev = dev->dev_private;
175 bool use_bl = false;
176
177 if (!(radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)))
178 return;
179
180 if (radeon_backlight == 0) {
181 return;
182 } else if (radeon_backlight == 1) {
183 use_bl = true;
184 } else if (radeon_backlight == -1) {
185 /* Quirks */
186 /* Amilo Xi 2550 only works with acpi bl */
187 if ((rdev->pdev->device == 0x9583) &&
188 (rdev->pdev->subsystem_vendor == 0x1734) &&
189 (rdev->pdev->subsystem_device == 0x1107))
190 use_bl = false;
191 /* Older PPC macs use on-GPU backlight controller */
192 #ifndef CONFIG_PPC_PMAC
193 /* disable native backlight control on older asics */
194 else if (rdev->family < CHIP_R600)
195 use_bl = false;
196 #endif
197 else
198 use_bl = true;
199 }
200
201 if (use_bl) {
202 if (rdev->is_atom_bios)
203 radeon_atom_backlight_init(radeon_encoder, connector);
204 else
205 radeon_legacy_backlight_init(radeon_encoder, connector);
206 }
207 }
208
209 void
radeon_link_encoder_connector(struct drm_device * dev)210 radeon_link_encoder_connector(struct drm_device *dev)
211 {
212 struct drm_connector *connector;
213 struct radeon_connector *radeon_connector;
214 struct drm_encoder *encoder;
215 struct radeon_encoder *radeon_encoder;
216
217 /* walk the list and link encoders to connectors */
218 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
219 radeon_connector = to_radeon_connector(connector);
220 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
221 radeon_encoder = to_radeon_encoder(encoder);
222 if (radeon_encoder->devices & radeon_connector->devices) {
223 drm_connector_attach_encoder(connector, encoder);
224 if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
225 radeon_encoder_add_backlight(radeon_encoder, connector);
226 }
227 }
228 }
229 }
230
radeon_encoder_set_active_device(struct drm_encoder * encoder)231 void radeon_encoder_set_active_device(struct drm_encoder *encoder)
232 {
233 struct drm_device *dev = encoder->dev;
234 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
235 struct drm_connector *connector;
236
237 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
238 if (connector->encoder == encoder) {
239 struct radeon_connector *radeon_connector = to_radeon_connector(connector);
240 radeon_encoder->active_device = radeon_encoder->devices & radeon_connector->devices;
241 DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
242 radeon_encoder->active_device, radeon_encoder->devices,
243 radeon_connector->devices, encoder->encoder_type);
244 }
245 }
246 }
247
248 struct drm_connector *
radeon_get_connector_for_encoder(struct drm_encoder * encoder)249 radeon_get_connector_for_encoder(struct drm_encoder *encoder)
250 {
251 struct drm_device *dev = encoder->dev;
252 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
253 struct drm_connector *connector;
254 struct radeon_connector *radeon_connector;
255
256 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
257 radeon_connector = to_radeon_connector(connector);
258 if (radeon_encoder->is_mst_encoder) {
259 struct radeon_encoder_mst *mst_enc;
260
261 if (!radeon_connector->is_mst_connector)
262 continue;
263
264 mst_enc = radeon_encoder->enc_priv;
265 if (mst_enc->connector == radeon_connector->mst_port)
266 return connector;
267 } else if (radeon_encoder->active_device & radeon_connector->devices)
268 return connector;
269 }
270 return NULL;
271 }
272
273 struct drm_connector *
radeon_get_connector_for_encoder_init(struct drm_encoder * encoder)274 radeon_get_connector_for_encoder_init(struct drm_encoder *encoder)
275 {
276 struct drm_device *dev = encoder->dev;
277 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
278 struct drm_connector *connector;
279 struct radeon_connector *radeon_connector;
280
281 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
282 radeon_connector = to_radeon_connector(connector);
283 if (radeon_encoder->devices & radeon_connector->devices)
284 return connector;
285 }
286 return NULL;
287 }
288
radeon_get_external_encoder(struct drm_encoder * encoder)289 struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder)
290 {
291 struct drm_device *dev = encoder->dev;
292 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
293 struct drm_encoder *other_encoder;
294 struct radeon_encoder *other_radeon_encoder;
295
296 if (radeon_encoder->is_ext_encoder)
297 return NULL;
298
299 list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
300 if (other_encoder == encoder)
301 continue;
302 other_radeon_encoder = to_radeon_encoder(other_encoder);
303 if (other_radeon_encoder->is_ext_encoder &&
304 (radeon_encoder->devices & other_radeon_encoder->devices))
305 return other_encoder;
306 }
307 return NULL;
308 }
309
radeon_encoder_get_dp_bridge_encoder_id(struct drm_encoder * encoder)310 u16 radeon_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
311 {
312 struct drm_encoder *other_encoder = radeon_get_external_encoder(encoder);
313
314 if (other_encoder) {
315 struct radeon_encoder *radeon_encoder = to_radeon_encoder(other_encoder);
316
317 switch (radeon_encoder->encoder_id) {
318 case ENCODER_OBJECT_ID_TRAVIS:
319 case ENCODER_OBJECT_ID_NUTMEG:
320 return radeon_encoder->encoder_id;
321 default:
322 return ENCODER_OBJECT_ID_NONE;
323 }
324 }
325 return ENCODER_OBJECT_ID_NONE;
326 }
327
radeon_panel_mode_fixup(struct drm_encoder * encoder,struct drm_display_mode * adjusted_mode)328 void radeon_panel_mode_fixup(struct drm_encoder *encoder,
329 struct drm_display_mode *adjusted_mode)
330 {
331 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
332 struct drm_device *dev = encoder->dev;
333 struct radeon_device *rdev = dev->dev_private;
334 struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
335 unsigned hblank = native_mode->htotal - native_mode->hdisplay;
336 unsigned vblank = native_mode->vtotal - native_mode->vdisplay;
337 unsigned hover = native_mode->hsync_start - native_mode->hdisplay;
338 unsigned vover = native_mode->vsync_start - native_mode->vdisplay;
339 unsigned hsync_width = native_mode->hsync_end - native_mode->hsync_start;
340 unsigned vsync_width = native_mode->vsync_end - native_mode->vsync_start;
341
342 adjusted_mode->clock = native_mode->clock;
343 adjusted_mode->flags = native_mode->flags;
344
345 if (ASIC_IS_AVIVO(rdev)) {
346 adjusted_mode->hdisplay = native_mode->hdisplay;
347 adjusted_mode->vdisplay = native_mode->vdisplay;
348 }
349
350 adjusted_mode->htotal = native_mode->hdisplay + hblank;
351 adjusted_mode->hsync_start = native_mode->hdisplay + hover;
352 adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
353
354 adjusted_mode->vtotal = native_mode->vdisplay + vblank;
355 adjusted_mode->vsync_start = native_mode->vdisplay + vover;
356 adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
357
358 drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
359
360 if (ASIC_IS_AVIVO(rdev)) {
361 adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
362 adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
363 }
364
365 adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
366 adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
367 adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
368
369 adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
370 adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
371 adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
372
373 }
374
radeon_dig_monitor_is_duallink(struct drm_encoder * encoder,u32 pixel_clock)375 bool radeon_dig_monitor_is_duallink(struct drm_encoder *encoder,
376 u32 pixel_clock)
377 {
378 struct drm_device *dev = encoder->dev;
379 struct radeon_device *rdev = dev->dev_private;
380 struct drm_connector *connector;
381 struct radeon_connector *radeon_connector;
382 struct radeon_connector_atom_dig *dig_connector;
383
384 connector = radeon_get_connector_for_encoder(encoder);
385 /* if we don't have an active device yet, just use one of
386 * the connectors tied to the encoder.
387 */
388 if (!connector)
389 connector = radeon_get_connector_for_encoder_init(encoder);
390 radeon_connector = to_radeon_connector(connector);
391
392 switch (connector->connector_type) {
393 case DRM_MODE_CONNECTOR_DVII:
394 case DRM_MODE_CONNECTOR_HDMIB:
395 if (radeon_connector->use_digital) {
396 /* HDMI 1.3 supports up to 340 Mhz over single link */
397 if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
398 if (pixel_clock > 340000)
399 return true;
400 else
401 return false;
402 } else {
403 if (pixel_clock > 165000)
404 return true;
405 else
406 return false;
407 }
408 } else
409 return false;
410 case DRM_MODE_CONNECTOR_DVID:
411 case DRM_MODE_CONNECTOR_HDMIA:
412 case DRM_MODE_CONNECTOR_DisplayPort:
413 if (radeon_connector->is_mst_connector)
414 return false;
415
416 dig_connector = radeon_connector->con_priv;
417 if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
418 (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
419 return false;
420 else {
421 /* HDMI 1.3 supports up to 340 Mhz over single link */
422 if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
423 if (pixel_clock > 340000)
424 return true;
425 else
426 return false;
427 } else {
428 if (pixel_clock > 165000)
429 return true;
430 else
431 return false;
432 }
433 }
434 default:
435 return false;
436 }
437 }
438
radeon_encoder_is_digital(struct drm_encoder * encoder)439 bool radeon_encoder_is_digital(struct drm_encoder *encoder)
440 {
441 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
442 switch (radeon_encoder->encoder_id) {
443 case ENCODER_OBJECT_ID_INTERNAL_LVDS:
444 case ENCODER_OBJECT_ID_INTERNAL_TMDS1:
445 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
446 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
447 case ENCODER_OBJECT_ID_INTERNAL_DVO1:
448 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
449 case ENCODER_OBJECT_ID_INTERNAL_DDI:
450 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
451 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
452 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
453 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
454 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
455 return true;
456 default:
457 return false;
458 }
459 }
460