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 <acpi/video.h>
34 
35 #include "radeon.h"
36 #include "radeon_atombios.h"
37 #include "radeon_legacy_encoders.h"
38 #include "atom.h"
39 
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 = 0;
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 		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 
76 void 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 
85 uint32_t
86 radeon_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 				ret = ENCODER_INTERNAL_DAC2_ENUM_ID1;
116 			}
117 			break;
118 		case 3: /* external dac */
119 			if (ASIC_IS_AVIVO(rdev))
120 				ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;
121 			else
122 				ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
123 			break;
124 		}
125 		break;
126 	case ATOM_DEVICE_LCD1_SUPPORT:
127 		if (ASIC_IS_AVIVO(rdev))
128 			ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;
129 		else
130 			ret = ENCODER_INTERNAL_LVDS_ENUM_ID1;
131 		break;
132 	case ATOM_DEVICE_DFP1_SUPPORT:
133 		if ((rdev->family == CHIP_RS300) ||
134 		    (rdev->family == CHIP_RS400) ||
135 		    (rdev->family == CHIP_RS480))
136 			ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
137 		else if (ASIC_IS_AVIVO(rdev))
138 			ret = ENCODER_INTERNAL_KLDSCP_TMDS1_ENUM_ID1;
139 		else
140 			ret = ENCODER_INTERNAL_TMDS1_ENUM_ID1;
141 		break;
142 	case ATOM_DEVICE_LCD2_SUPPORT:
143 	case ATOM_DEVICE_DFP2_SUPPORT:
144 		if ((rdev->family == CHIP_RS600) ||
145 		    (rdev->family == CHIP_RS690) ||
146 		    (rdev->family == CHIP_RS740))
147 			ret = ENCODER_INTERNAL_DDI_ENUM_ID1;
148 		else if (ASIC_IS_AVIVO(rdev))
149 			ret = ENCODER_INTERNAL_KLDSCP_DVO1_ENUM_ID1;
150 		else
151 			ret = ENCODER_INTERNAL_DVO1_ENUM_ID1;
152 		break;
153 	case ATOM_DEVICE_DFP3_SUPPORT:
154 		ret = ENCODER_INTERNAL_LVTM1_ENUM_ID1;
155 		break;
156 	}
157 
158 	return ret;
159 }
160 
161 static void radeon_encoder_add_backlight(struct radeon_encoder *radeon_encoder,
162 					 struct drm_connector *connector)
163 {
164 	struct drm_device *dev = radeon_encoder->base.dev;
165 	struct radeon_device *rdev = dev->dev_private;
166 	bool use_bl = false;
167 
168 	if (!(radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)))
169 		return;
170 
171 	if (radeon_backlight == 0) {
172 		use_bl = false;
173 	} else if (radeon_backlight == 1) {
174 		use_bl = true;
175 	} else if (radeon_backlight == -1) {
176 		/* Quirks */
177 		/* Amilo Xi 2550 only works with acpi bl */
178 		if ((rdev->pdev->device == 0x9583) &&
179 		    (rdev->pdev->subsystem_vendor == 0x1734) &&
180 		    (rdev->pdev->subsystem_device == 0x1107))
181 			use_bl = false;
182 /* Older PPC macs use on-GPU backlight controller */
183 #ifndef CONFIG_PPC_PMAC
184 		/* disable native backlight control on older asics */
185 		else if (rdev->family < CHIP_R600)
186 			use_bl = false;
187 #endif
188 		else
189 			use_bl = true;
190 	}
191 
192 	if (use_bl) {
193 		if (rdev->is_atom_bios)
194 			radeon_atom_backlight_init(radeon_encoder, connector);
195 		else
196 			radeon_legacy_backlight_init(radeon_encoder, connector);
197 	}
198 
199 	/*
200 	 * If there is no native backlight device (which may happen even when
201 	 * use_bl==true) try registering an ACPI video backlight device instead.
202 	 */
203 	if (!rdev->mode_info.bl_encoder)
204 		acpi_video_register_backlight();
205 }
206 
207 void
208 radeon_link_encoder_connector(struct drm_device *dev)
209 {
210 	struct drm_connector *connector;
211 	struct radeon_connector *radeon_connector;
212 	struct drm_encoder *encoder;
213 	struct radeon_encoder *radeon_encoder;
214 
215 	/* walk the list and link encoders to connectors */
216 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
217 		radeon_connector = to_radeon_connector(connector);
218 		list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
219 			radeon_encoder = to_radeon_encoder(encoder);
220 			if (radeon_encoder->devices & radeon_connector->devices) {
221 				drm_connector_attach_encoder(connector, encoder);
222 				if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT))
223 					radeon_encoder_add_backlight(radeon_encoder, connector);
224 			}
225 		}
226 	}
227 }
228 
229 void radeon_encoder_set_active_device(struct drm_encoder *encoder)
230 {
231 	struct drm_device *dev = encoder->dev;
232 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
233 	struct drm_connector *connector;
234 
235 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
236 		if (connector->encoder == encoder) {
237 			struct radeon_connector *radeon_connector = to_radeon_connector(connector);
238 			radeon_encoder->active_device = radeon_encoder->devices & radeon_connector->devices;
239 			DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
240 				  radeon_encoder->active_device, radeon_encoder->devices,
241 				  radeon_connector->devices, encoder->encoder_type);
242 		}
243 	}
244 }
245 
246 struct drm_connector *
247 radeon_get_connector_for_encoder(struct drm_encoder *encoder)
248 {
249 	struct drm_device *dev = encoder->dev;
250 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
251 	struct drm_connector *connector;
252 	struct radeon_connector *radeon_connector;
253 
254 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
255 		radeon_connector = to_radeon_connector(connector);
256 		if (radeon_encoder->active_device & radeon_connector->devices)
257 			return connector;
258 	}
259 	return NULL;
260 }
261 
262 struct drm_connector *
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 
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 
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 
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 
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 		dig_connector = radeon_connector->con_priv;
403 		if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
404 		    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
405 			return false;
406 		else {
407 			/* HDMI 1.3 supports up to 340 Mhz over single link */
408 			if (ASIC_IS_DCE6(rdev) && drm_detect_hdmi_monitor(radeon_connector_edid(connector))) {
409 				if (pixel_clock > 340000)
410 					return true;
411 				else
412 					return false;
413 			} else {
414 				if (pixel_clock > 165000)
415 					return true;
416 				else
417 					return false;
418 			}
419 		}
420 	default:
421 		return false;
422 	}
423 }
424 
425 bool radeon_encoder_is_digital(struct drm_encoder *encoder)
426 {
427 	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
428 	switch (radeon_encoder->encoder_id) {
429 	case ENCODER_OBJECT_ID_INTERNAL_LVDS:
430 	case ENCODER_OBJECT_ID_INTERNAL_TMDS1:
431 	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
432 	case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
433 	case ENCODER_OBJECT_ID_INTERNAL_DVO1:
434 	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
435 	case ENCODER_OBJECT_ID_INTERNAL_DDI:
436 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
437 	case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
438 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
439 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
440 	case ENCODER_OBJECT_ID_INTERNAL_UNIPHY3:
441 		return true;
442 	default:
443 		return false;
444 	}
445 }
446