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 <drm/amdgpu_drm.h>
28  #include "amdgpu.h"
29  #include "amdgpu_connectors.h"
30  #include "amdgpu_display.h"
31  #include "atom.h"
32  #include "atombios_encoders.h"
33  
34  void
amdgpu_link_encoder_connector(struct drm_device * dev)35  amdgpu_link_encoder_connector(struct drm_device *dev)
36  {
37  	struct amdgpu_device *adev = drm_to_adev(dev);
38  	struct drm_connector *connector;
39  	struct drm_connector_list_iter iter;
40  	struct amdgpu_connector *amdgpu_connector;
41  	struct drm_encoder *encoder;
42  	struct amdgpu_encoder *amdgpu_encoder;
43  
44  	drm_connector_list_iter_begin(dev, &iter);
45  	/* walk the list and link encoders to connectors */
46  	drm_for_each_connector_iter(connector, &iter) {
47  		amdgpu_connector = to_amdgpu_connector(connector);
48  		list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
49  			amdgpu_encoder = to_amdgpu_encoder(encoder);
50  			if (amdgpu_encoder->devices & amdgpu_connector->devices) {
51  				drm_connector_attach_encoder(connector, encoder);
52  				if (amdgpu_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
53  					amdgpu_atombios_encoder_init_backlight(amdgpu_encoder, connector);
54  					adev->mode_info.bl_encoder = amdgpu_encoder;
55  				}
56  			}
57  		}
58  	}
59  	drm_connector_list_iter_end(&iter);
60  }
61  
amdgpu_encoder_set_active_device(struct drm_encoder * encoder)62  void amdgpu_encoder_set_active_device(struct drm_encoder *encoder)
63  {
64  	struct drm_device *dev = encoder->dev;
65  	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
66  	struct drm_connector *connector;
67  	struct drm_connector_list_iter iter;
68  
69  	drm_connector_list_iter_begin(dev, &iter);
70  	drm_for_each_connector_iter(connector, &iter) {
71  		if (connector->encoder == encoder) {
72  			struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
73  
74  			amdgpu_encoder->active_device = amdgpu_encoder->devices & amdgpu_connector->devices;
75  			DRM_DEBUG_KMS("setting active device to %08x from %08x %08x for encoder %d\n",
76  				  amdgpu_encoder->active_device, amdgpu_encoder->devices,
77  				  amdgpu_connector->devices, encoder->encoder_type);
78  		}
79  	}
80  	drm_connector_list_iter_end(&iter);
81  }
82  
83  struct drm_connector *
amdgpu_get_connector_for_encoder(struct drm_encoder * encoder)84  amdgpu_get_connector_for_encoder(struct drm_encoder *encoder)
85  {
86  	struct drm_device *dev = encoder->dev;
87  	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
88  	struct drm_connector *connector, *found = NULL;
89  	struct drm_connector_list_iter iter;
90  	struct amdgpu_connector *amdgpu_connector;
91  
92  	drm_connector_list_iter_begin(dev, &iter);
93  	drm_for_each_connector_iter(connector, &iter) {
94  		amdgpu_connector = to_amdgpu_connector(connector);
95  		if (amdgpu_encoder->active_device & amdgpu_connector->devices) {
96  			found = connector;
97  			break;
98  		}
99  	}
100  	drm_connector_list_iter_end(&iter);
101  	return found;
102  }
103  
104  struct drm_connector *
amdgpu_get_connector_for_encoder_init(struct drm_encoder * encoder)105  amdgpu_get_connector_for_encoder_init(struct drm_encoder *encoder)
106  {
107  	struct drm_device *dev = encoder->dev;
108  	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
109  	struct drm_connector *connector, *found = NULL;
110  	struct drm_connector_list_iter iter;
111  	struct amdgpu_connector *amdgpu_connector;
112  
113  	drm_connector_list_iter_begin(dev, &iter);
114  	drm_for_each_connector_iter(connector, &iter) {
115  		amdgpu_connector = to_amdgpu_connector(connector);
116  		if (amdgpu_encoder->devices & amdgpu_connector->devices) {
117  			found = connector;
118  			break;
119  		}
120  	}
121  	drm_connector_list_iter_end(&iter);
122  	return found;
123  }
124  
amdgpu_get_external_encoder(struct drm_encoder * encoder)125  struct drm_encoder *amdgpu_get_external_encoder(struct drm_encoder *encoder)
126  {
127  	struct drm_device *dev = encoder->dev;
128  	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
129  	struct drm_encoder *other_encoder;
130  	struct amdgpu_encoder *other_amdgpu_encoder;
131  
132  	if (amdgpu_encoder->is_ext_encoder)
133  		return NULL;
134  
135  	list_for_each_entry(other_encoder, &dev->mode_config.encoder_list, head) {
136  		if (other_encoder == encoder)
137  			continue;
138  		other_amdgpu_encoder = to_amdgpu_encoder(other_encoder);
139  		if (other_amdgpu_encoder->is_ext_encoder &&
140  		    (amdgpu_encoder->devices & other_amdgpu_encoder->devices))
141  			return other_encoder;
142  	}
143  	return NULL;
144  }
145  
amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder * encoder)146  u16 amdgpu_encoder_get_dp_bridge_encoder_id(struct drm_encoder *encoder)
147  {
148  	struct drm_encoder *other_encoder = amdgpu_get_external_encoder(encoder);
149  
150  	if (other_encoder) {
151  		struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(other_encoder);
152  
153  		switch (amdgpu_encoder->encoder_id) {
154  		case ENCODER_OBJECT_ID_TRAVIS:
155  		case ENCODER_OBJECT_ID_NUTMEG:
156  			return amdgpu_encoder->encoder_id;
157  		default:
158  			return ENCODER_OBJECT_ID_NONE;
159  		}
160  	}
161  	return ENCODER_OBJECT_ID_NONE;
162  }
163  
amdgpu_panel_mode_fixup(struct drm_encoder * encoder,struct drm_display_mode * adjusted_mode)164  void amdgpu_panel_mode_fixup(struct drm_encoder *encoder,
165  			     struct drm_display_mode *adjusted_mode)
166  {
167  	struct amdgpu_encoder *amdgpu_encoder = to_amdgpu_encoder(encoder);
168  	struct drm_display_mode *native_mode = &amdgpu_encoder->native_mode;
169  	unsigned int hblank = native_mode->htotal - native_mode->hdisplay;
170  	unsigned int vblank = native_mode->vtotal - native_mode->vdisplay;
171  	unsigned int hover = native_mode->hsync_start - native_mode->hdisplay;
172  	unsigned int vover = native_mode->vsync_start - native_mode->vdisplay;
173  	unsigned int hsync_width = native_mode->hsync_end - native_mode->hsync_start;
174  	unsigned int vsync_width = native_mode->vsync_end - native_mode->vsync_start;
175  
176  	adjusted_mode->clock = native_mode->clock;
177  	adjusted_mode->flags = native_mode->flags;
178  
179  	adjusted_mode->hdisplay = native_mode->hdisplay;
180  	adjusted_mode->vdisplay = native_mode->vdisplay;
181  
182  	adjusted_mode->htotal = native_mode->hdisplay + hblank;
183  	adjusted_mode->hsync_start = native_mode->hdisplay + hover;
184  	adjusted_mode->hsync_end = adjusted_mode->hsync_start + hsync_width;
185  
186  	adjusted_mode->vtotal = native_mode->vdisplay + vblank;
187  	adjusted_mode->vsync_start = native_mode->vdisplay + vover;
188  	adjusted_mode->vsync_end = adjusted_mode->vsync_start + vsync_width;
189  
190  	drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V);
191  
192  	adjusted_mode->crtc_hdisplay = native_mode->hdisplay;
193  	adjusted_mode->crtc_vdisplay = native_mode->vdisplay;
194  
195  	adjusted_mode->crtc_htotal = adjusted_mode->crtc_hdisplay + hblank;
196  	adjusted_mode->crtc_hsync_start = adjusted_mode->crtc_hdisplay + hover;
197  	adjusted_mode->crtc_hsync_end = adjusted_mode->crtc_hsync_start + hsync_width;
198  
199  	adjusted_mode->crtc_vtotal = adjusted_mode->crtc_vdisplay + vblank;
200  	adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + vover;
201  	adjusted_mode->crtc_vsync_end = adjusted_mode->crtc_vsync_start + vsync_width;
202  
203  }
204  
amdgpu_dig_monitor_is_duallink(struct drm_encoder * encoder,u32 pixel_clock)205  bool amdgpu_dig_monitor_is_duallink(struct drm_encoder *encoder,
206  				    u32 pixel_clock)
207  {
208  	struct drm_connector *connector;
209  	struct amdgpu_connector *amdgpu_connector;
210  	struct amdgpu_connector_atom_dig *dig_connector;
211  
212  	connector = amdgpu_get_connector_for_encoder(encoder);
213  	/* if we don't have an active device yet, just use one of
214  	 * the connectors tied to the encoder.
215  	 */
216  	if (!connector)
217  		connector = amdgpu_get_connector_for_encoder_init(encoder);
218  	amdgpu_connector = to_amdgpu_connector(connector);
219  
220  	switch (connector->connector_type) {
221  	case DRM_MODE_CONNECTOR_DVII:
222  	case DRM_MODE_CONNECTOR_HDMIB:
223  		if (amdgpu_connector->use_digital) {
224  			/* HDMI 1.3 supports up to 340 Mhz over single link */
225  			if (connector->display_info.is_hdmi) {
226  				if (pixel_clock > 340000)
227  					return true;
228  				else
229  					return false;
230  			} else {
231  				if (pixel_clock > 165000)
232  					return true;
233  				else
234  					return false;
235  			}
236  		} else
237  			return false;
238  	case DRM_MODE_CONNECTOR_DVID:
239  	case DRM_MODE_CONNECTOR_HDMIA:
240  	case DRM_MODE_CONNECTOR_DisplayPort:
241  		dig_connector = amdgpu_connector->con_priv;
242  		if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
243  		    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP))
244  			return false;
245  		else {
246  			/* HDMI 1.3 supports up to 340 Mhz over single link */
247  			if (connector->display_info.is_hdmi) {
248  				if (pixel_clock > 340000)
249  					return true;
250  				else
251  					return false;
252  			} else {
253  				if (pixel_clock > 165000)
254  					return true;
255  				else
256  					return false;
257  			}
258  		}
259  	default:
260  		return false;
261  	}
262  }
263