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