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 <linux/pci.h>
28
29#include <drm/drm_device.h>
30#include <drm/radeon_drm.h>
31
32#include <acpi/video.h>
33
34#include "radeon.h"
35#include "radeon_atombios.h"
36#include "radeon_legacy_encoders.h"
37#include "atom.h"
38
39static uint32_t radeon_encoder_clones(struct drm_encoder *encoder)
40{
41 struct drm_device *dev = encoder->dev;
42 struct radeon_device *rdev = dev->dev_private;
43 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
44 struct drm_encoder *clone_encoder;
45 uint32_t index_mask = 0;
46 int count;
47
48 /* DIG routing gets problematic */
49 if (rdev->family >= CHIP_R600)
50 return index_mask;
51 /* LVDS/TV are too wacky */
52 if (radeon_encoder->devices & ATOM_DEVICE_LCD_SUPPORT)
53 return index_mask;
54 /* DVO requires 2x ppll clocks depending on tmds chip */
55 if (radeon_encoder->devices & ATOM_DEVICE_DFP2_SUPPORT)
56 return index_mask;
57
58 count = -1;
59 list_for_each_entry(clone_encoder, &dev->mode_config.encoder_list, head) {
60 struct radeon_encoder *radeon_clone = to_radeon_encoder(clone_encoder);
61
62 count++;
63
64 if (clone_encoder == encoder)
65 continue;
66 if (radeon_clone->devices & (ATOM_DEVICE_LCD_SUPPORT))
67 continue;
68 if (radeon_clone->devices & ATOM_DEVICE_DFP2_SUPPORT)
69 continue;
70 else
71 index_mask |= (1 << count);
72 }
73 return index_mask;
74}
75
76void radeon_setup_encoder_clones(struct drm_device *dev)
77{
78 struct drm_encoder *encoder;
79
80 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
81 encoder->possible_clones = radeon_encoder_clones(encoder);
82 }
83}
84
85uint32_t
86radeon_get_encoder_enum(struct drm_device *dev, uint32_t supported_device, uint8_t dac)
87{
88 struct radeon_device *rdev = dev->dev_private;
89 uint32_t ret = 0;
90
91 switch (supported_device) {
92 case ATOM_DEVICE_CRT1_SUPPORT:
93 case ATOM_DEVICE_TV1_SUPPORT:
94 case ATOM_DEVICE_TV2_SUPPORT:
95 case ATOM_DEVICE_CRT2_SUPPORT:
96 case ATOM_DEVICE_CV_SUPPORT:
97 switch (dac) {
98 case 1: /* dac a */
99 if ((rdev->family == CHIP_RS300) ||
100 (rdev->family == CHIP_RS400) ||
101 (rdev->family == CHIP_RS480))
102 ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;
103 else if (ASIC_IS_AVIVO(rdev))
104 ret = ENCODER_INTERNAL_KLDSCP_DAC1_ENUM_ID1;
105 else
106 ret = ENCODER_INTERNAL_DAC1_ENUM_ID1;
107 break;
108 case 2: /* dac b */
109 if (ASIC_IS_AVIVO(rdev))
110 ret = ENCODER_INTERNAL_KLDSCP_DAC2_ENUM_ID1;
111 else {
112 /* if (rdev->family == CHIP_R200)
113 * ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
114 * else
115 */
116 ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;
117 }
118 break;
119 case 3: /* external dac */
120 if (ASIC_IS_AVIVO(rdev))
121 ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;
122 else
123 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
124 break;
125 }
126 break;
127 case ATOM_DEVICE_LCD1_SUPPORT:
128 if (ASIC_IS_AVIVO(rdev))
129 ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;
130 else
131 ret = ENCODER_INTERNAL_LVDS_ENUM_ID1;
132 break;
133 case ATOM_DEVICE_DFP1_SUPPORT:
134 if ((rdev->family == CHIP_RS300) ||
135 (rdev->family == CHIP_RS400) ||
136 (rdev->family == CHIP_RS480))
137 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
138 else if (ASIC_IS_AVIVO(rdev))
139 ret = ENCODER_INTERNAL_KLDSCP_TMDS1_ENUM_ID1;
140 else
141 ret = ENCODER_INTERNAL_TMDS1_ENUM_ID1;
142 break;
143 case ATOM_DEVICE_LCD2_SUPPORT:
144 case ATOM_DEVICE_DFP2_SUPPORT:
145 if ((rdev->family == CHIP_RS600) ||
146 (rdev->family == CHIP_RS690) ||
147 (rdev->family == CHIP_RS740))
148 ret = ENCODER_INTERNAL_DDI_ENUM_ID1;
149 else if (ASIC_IS_AVIVO(rdev))
150 ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;
151 else
152 ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
153 break;
154 case ATOM_DEVICE_DFP3_SUPPORT:
155 ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;
156 break;
157 }
158
159 return ret;
160}
161
162static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
163 struct drm_connector *connector)
164{
165 struct drm_device *dev = radeon_encoder->base.dev;
166 struct radeon_device *rdev = dev->dev_private;
167 bool use_bl = false;
168
169 if (!(radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)))
170 return;
171
172 if (radeon_backlight == 0) {
173 use_bl = false;
174 } else if (radeon_backlight == 1) {
175 use_bl = true;
176 } else if (radeon_backlight == -1) {
177 /* Quirks */
178 /* Amilo Xi 2550 only works with acpi bl */
179 if ((rdev->pdev->device == 0x9583) &&
180 (rdev->pdev->subsystem_vendor == 0x1734) &&
181 (rdev->pdev->subsystem_device == 0x1107))
182 use_bl = false;
183/* Older PPC macs use on-GPU backlight controller */
184#ifndef CONFIG_PPC_PMAC
185 /* disable native backlight control on older asics */
186 else if (rdev->family < CHIP_R600)
187 use_bl = false;
188#endif
189 else
190 use_bl = true;
191 }
192
193 if (use_bl) {
194 if (rdev->is_atom_bios)
195 radeon_atom_backlight_init(radeon_encoder, drm_connector: connector);
196 else
197 radeon_legacy_backlight_init(radeon_encoder, drm_connector: connector);
198 }
199
200 /*
201 * If there is no native backlight device (which may happen even when
202 * use_bl==true) try registering an ACPI video backlight device instead.
203 */
204 if (!rdev->mode_info.bl_encoder)
205 acpi_video_register_backlight();
206}
207
208void
209radeon_link_encoder_connector(struct drm_device *dev)
210{
211 struct drm_connector *connector;
212 struct radeon_connector *radeon_connector;
213 struct drm_encoder *encoder;
214 struct radeon_encoder *radeon_encoder;
215
216 /* walk the list and link encoders to connectors */
217 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
218 radeon_connector = to_radeon_connector(connector);
219 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
220 radeon_encoder = to_radeon_encoder(encoder);
221 if (radeon_encoder->devices & radeon_connector->devices) {
222 drm_connector_attach_encoder(connector, encoder);
223 if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
224 radeon_encoder_add_backlight(radeon_encoder, connector);
225 }
226 }
227 }
228}
229
230void radeon_encoder_set_active_device(struct drm_encoder *encoder)
231{
232 struct drm_device *dev = encoder->dev;
233 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
234 struct drm_connector *connector;
235
236 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
237 if (connector->encoder == encoder) {
238 struct radeon_connector *radeon_connector = to_radeon_connector(connector);
239
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
248struct drm_connector *
249radeon_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->active_device & radeon_connector->devices)
259 return connector;
260 }
261 return NULL;
262}
263
264struct drm_connector *
265radeon_get_connector_for_encoder_init(struct drm_encoder *encoder)
266{
267 struct drm_device *dev = encoder->dev;
268 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
269 struct drm_connector *connector;
270 struct radeon_connector *radeon_connector;
271
272 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
273 radeon_connector = to_radeon_connector(connector);
274 if (radeon_encoder->devices & radeon_connector->devices)
275 return connector;
276 }
277 return NULL;
278}
279
280struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder)
281{
282 struct drm_device *dev = encoder->dev;
283 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
284 struct drm_encoder *other_encoder;
285 struct radeon_encoder *other_radeon_encoder;
286
287 if (radeon_encoder->is_ext_encoder)
288 return NULL;
289
290 list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
291 if (other_encoder == encoder)
292 continue;
293 other_radeon_encoder = to_radeon_encoder(other_encoder);
294 if (other_radeon_encoder->is_ext_encoder &&
295 (radeon_encoder->devices & other_radeon_encoder->devices))
296 return other_encoder;
297 }
298 return NULL;
299}
300
301u16 radeon_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
302{
303 struct drm_encoder *other_encoder = radeon_get_external_encoder(encoder);
304
305 if (other_encoder) {
306 struct radeon_encoder *radeon_encoder = to_radeon_encoder(other_encoder);
307
308 switch (radeon_encoder->encoder_id) {
309 case ENCODER_OBJECT_ID_TRAVIS:
310 case ENCODER_OBJECT_ID_NUTMEG:
311 return radeon_encoder->encoder_id;
312 default:
313 return ENCODER_OBJECT_ID_NONE;
314 }
315 }
316 return ENCODER_OBJECT_ID_NONE;
317}
318
319void radeon_panel_mode_fixup(struct drm_encoder *encoder,
320 struct drm_display_mode *adjusted_mode)
321{
322 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
323 struct drm_device *dev = encoder->dev;
324 struct radeon_device *rdev = dev->dev_private;
325 struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
326 unsigned int hblank = native_mode->htotal - native_mode->hdisplay;
327 unsigned int vblank = native_mode->vtotal - native_mode->vdisplay;
328 unsigned int hover = native_mode->hsync_start - native_mode->hdisplay;
329 unsigned int vover = native_mode->vsync_start - native_mode->vdisplay;
330 unsigned int hsync_width = native_mode->hsync_end - native_mode->hsync_start;
331 unsigned int vsync_width = native_mode->vsync_end - native_mode->vsync_start;
332
333 adjusted_mode->clock = native_mode->clock;
334 adjusted_mode->flags = native_mode->flags;
335
336 if (ASIC_IS_AVIVO(rdev)) {
337 adjusted_mode->hdisplay = native_mode->hdisplay;
338 adjusted_mode->vdisplay = native_mode->vdisplay;
339 }
340
341 adjusted_mode->htotal = native_mode->hdisplay + hblank;
342 adjusted_mode->hsync_start = native_mode->hdisplay + hover;
343 adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
344
345 adjusted_mode->vtotal = native_mode->vdisplay + vblank;
346 adjusted_mode->vsync_start = native_mode->vdisplay + vover;
347 adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
348
349 drm_mode_set_crtcinfo(p: adjusted_mode, CRTC_INTERLACE_HALVE_V);
350
351 if (ASIC_IS_AVIVO(rdev)) {
352 adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
353 adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
354 }
355
356 adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
357 adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
358 adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
359
360 adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
361 adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
362 adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
363
364}
365
366bool radeon_dig_monitor_is_duallink(struct drm_encoder *encoder,
367 u32 pixel_clock)
368{
369 struct drm_device *dev = encoder->dev;
370 struct radeon_device *rdev = dev->dev_private;
371 struct drm_connector *connector;
372 struct radeon_connector *radeon_connector;
373 struct radeon_connector_atom_dig *dig_connector;
374
375 connector = radeon_get_connector_for_encoder(encoder);
376 /* if we don't have an active device yet, just use one of
377 * the connectors tied to the encoder.
378 */
379 if (!connector)
380 connector = radeon_get_connector_for_encoder_init(encoder);
381 radeon_connector = to_radeon_connector(connector);
382
383 switch (connector->connector_type) {
384 case DRM_MODE_CONNECTOR_DVII:
385 case DRM_MODE_CONNECTOR_HDMIB:
386 if (radeon_connector->use_digital) {
387 /* HDMI 1.3 supports up to 340 Mhz over single link */
388 if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(edid: radeon_connector_edid(connector))) {
389 if (pixel_clock > 340000)
390 return true;
391 else
392 return false;
393 } else {
394 if (pixel_clock > 165000)
395 return true;
396 else
397 return false;
398 }
399 } else
400 return false;
401 case DRM_MODE_CONNECTOR_DVID:
402 case DRM_MODE_CONNECTOR_HDMIA:
403 case DRM_MODE_CONNECTOR_DisplayPort:
404 dig_connector = radeon_connector->con_priv;
405 if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
406 (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
407 return false;
408 else {
409 /* HDMI 1.3 supports up to 340 Mhz over single link */
410 if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(edid: radeon_connector_edid(connector))) {
411 if (pixel_clock > 340000)
412 return true;
413 else
414 return false;
415 } else {
416 if (pixel_clock > 165000)
417 return true;
418 else
419 return false;
420 }
421 }
422 default:
423 return false;
424 }
425}
426
427bool radeon_encoder_is_digital(struct drm_encoder *encoder)
428{
429 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
430
431 switch (radeon_encoder->encoder_id) {
432 case ENCODER_OBJECT_ID_INTERNAL_LVDS:
433 case ENCODER_OBJECT_ID_INTERNAL_TMDS1:
434 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
435 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
436 case ENCODER_OBJECT_ID_INTERNAL_DVO1:
437 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
438 case ENCODER_OBJECT_ID_INTERNAL_DDI:
439 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
440 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
441 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
442 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
443 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
444 return true;
445 default:
446 return false;
447 }
448}
449

source code of linux/drivers/gpu/drm/radeon/radeon_encoders.c