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