1 /*
2 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
3 * Copyright (c) 2007, 2010 Intel Corporation
4 * Jesse Barnes <jesse.barnes@intel.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26 #include <linux/i2c.h>
27 #include <linux/slab.h>
28
29 #include <drm/drm_atomic_helper.h>
30 #include <drm/drm_edid.h>
31
32 #include "display/intel_panel.h"
33
34 #include "i915_drv.h"
35 #include "intel_connector.h"
36 #include "intel_display_types.h"
37 #include "intel_hdcp.h"
38
intel_connector_init(struct intel_connector * connector)39 int intel_connector_init(struct intel_connector *connector)
40 {
41 struct intel_digital_connector_state *conn_state;
42
43 /*
44 * Allocate enough memory to hold intel_digital_connector_state,
45 * This might be a few bytes too many, but for connectors that don't
46 * need it we'll free the state and allocate a smaller one on the first
47 * successful commit anyway.
48 */
49 conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL);
50 if (!conn_state)
51 return -ENOMEM;
52
53 __drm_atomic_helper_connector_reset(&connector->base,
54 &conn_state->base);
55
56 return 0;
57 }
58
intel_connector_alloc(void)59 struct intel_connector *intel_connector_alloc(void)
60 {
61 struct intel_connector *connector;
62
63 connector = kzalloc(sizeof(*connector), GFP_KERNEL);
64 if (!connector)
65 return NULL;
66
67 if (intel_connector_init(connector) < 0) {
68 kfree(connector);
69 return NULL;
70 }
71
72 return connector;
73 }
74
75 /*
76 * Free the bits allocated by intel_connector_alloc.
77 * This should only be used after intel_connector_alloc has returned
78 * successfully, and before drm_connector_init returns successfully.
79 * Otherwise the destroy callbacks for the connector and the state should
80 * take care of proper cleanup/free (see intel_connector_destroy).
81 */
intel_connector_free(struct intel_connector * connector)82 void intel_connector_free(struct intel_connector *connector)
83 {
84 kfree(to_intel_digital_connector_state(connector->base.state));
85 kfree(connector);
86 }
87
88 /*
89 * Connector type independent destroy hook for drm_connector_funcs.
90 */
intel_connector_destroy(struct drm_connector * connector)91 void intel_connector_destroy(struct drm_connector *connector)
92 {
93 struct intel_connector *intel_connector = to_intel_connector(connector);
94
95 kfree(intel_connector->detect_edid);
96
97 intel_hdcp_cleanup(intel_connector);
98
99 if (!IS_ERR_OR_NULL(intel_connector->edid))
100 kfree(intel_connector->edid);
101
102 intel_panel_fini(&intel_connector->panel);
103
104 drm_connector_cleanup(connector);
105
106 if (intel_connector->port)
107 drm_dp_mst_put_port_malloc(intel_connector->port);
108
109 kfree(connector);
110 }
111
intel_connector_register(struct drm_connector * connector)112 int intel_connector_register(struct drm_connector *connector)
113 {
114 struct intel_connector *intel_connector = to_intel_connector(connector);
115 int ret;
116
117 ret = intel_backlight_device_register(intel_connector);
118 if (ret)
119 goto err;
120
121 if (i915_inject_probe_failure(to_i915(connector->dev))) {
122 ret = -EFAULT;
123 goto err_backlight;
124 }
125
126 return 0;
127
128 err_backlight:
129 intel_backlight_device_unregister(intel_connector);
130 err:
131 return ret;
132 }
133
intel_connector_unregister(struct drm_connector * connector)134 void intel_connector_unregister(struct drm_connector *connector)
135 {
136 struct intel_connector *intel_connector = to_intel_connector(connector);
137
138 intel_backlight_device_unregister(intel_connector);
139 }
140
intel_connector_attach_encoder(struct intel_connector * connector,struct intel_encoder * encoder)141 void intel_connector_attach_encoder(struct intel_connector *connector,
142 struct intel_encoder *encoder)
143 {
144 connector->encoder = encoder;
145 drm_connector_attach_encoder(&connector->base, &encoder->base);
146 }
147
148 /*
149 * Simple connector->get_hw_state implementation for encoders that support only
150 * one connector and no cloning and hence the encoder state determines the state
151 * of the connector.
152 */
intel_connector_get_hw_state(struct intel_connector * connector)153 bool intel_connector_get_hw_state(struct intel_connector *connector)
154 {
155 enum pipe pipe = 0;
156 struct intel_encoder *encoder = connector->encoder;
157
158 return encoder->get_hw_state(encoder, &pipe);
159 }
160
intel_connector_get_pipe(struct intel_connector * connector)161 enum pipe intel_connector_get_pipe(struct intel_connector *connector)
162 {
163 struct drm_device *dev = connector->base.dev;
164
165 WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
166
167 if (!connector->base.state->crtc)
168 return INVALID_PIPE;
169
170 return to_intel_crtc(connector->base.state->crtc)->pipe;
171 }
172
173 /**
174 * intel_connector_update_modes - update connector from edid
175 * @connector: DRM connector device to use
176 * @edid: previously read EDID information
177 */
intel_connector_update_modes(struct drm_connector * connector,struct edid * edid)178 int intel_connector_update_modes(struct drm_connector *connector,
179 struct edid *edid)
180 {
181 int ret;
182
183 drm_connector_update_edid_property(connector, edid);
184 ret = drm_add_edid_modes(connector, edid);
185
186 return ret;
187 }
188
189 /**
190 * intel_ddc_get_modes - get modelist from monitor
191 * @connector: DRM connector device to use
192 * @adapter: i2c adapter
193 *
194 * Fetch the EDID information from @connector using the DDC bus.
195 */
intel_ddc_get_modes(struct drm_connector * connector,struct i2c_adapter * adapter)196 int intel_ddc_get_modes(struct drm_connector *connector,
197 struct i2c_adapter *adapter)
198 {
199 struct edid *edid;
200 int ret;
201
202 edid = drm_get_edid(connector, adapter);
203 if (!edid)
204 return 0;
205
206 ret = intel_connector_update_modes(connector, edid);
207 kfree(edid);
208
209 return ret;
210 }
211
212 static const struct drm_prop_enum_list force_audio_names[] = {
213 { HDMI_AUDIO_OFF_DVI, "force-dvi" },
214 { HDMI_AUDIO_OFF, "off" },
215 { HDMI_AUDIO_AUTO, "auto" },
216 { HDMI_AUDIO_ON, "on" },
217 };
218
219 void
intel_attach_force_audio_property(struct drm_connector * connector)220 intel_attach_force_audio_property(struct drm_connector *connector)
221 {
222 struct drm_device *dev = connector->dev;
223 struct drm_i915_private *dev_priv = to_i915(dev);
224 struct drm_property *prop;
225
226 prop = dev_priv->force_audio_property;
227 if (prop == NULL) {
228 prop = drm_property_create_enum(dev, 0,
229 "audio",
230 force_audio_names,
231 ARRAY_SIZE(force_audio_names));
232 if (prop == NULL)
233 return;
234
235 dev_priv->force_audio_property = prop;
236 }
237 drm_object_attach_property(&connector->base, prop, 0);
238 }
239
240 static const struct drm_prop_enum_list broadcast_rgb_names[] = {
241 { INTEL_BROADCAST_RGB_AUTO, "Automatic" },
242 { INTEL_BROADCAST_RGB_FULL, "Full" },
243 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },
244 };
245
246 void
intel_attach_broadcast_rgb_property(struct drm_connector * connector)247 intel_attach_broadcast_rgb_property(struct drm_connector *connector)
248 {
249 struct drm_device *dev = connector->dev;
250 struct drm_i915_private *dev_priv = to_i915(dev);
251 struct drm_property *prop;
252
253 prop = dev_priv->broadcast_rgb_property;
254 if (prop == NULL) {
255 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
256 "Broadcast RGB",
257 broadcast_rgb_names,
258 ARRAY_SIZE(broadcast_rgb_names));
259 if (prop == NULL)
260 return;
261
262 dev_priv->broadcast_rgb_property = prop;
263 }
264
265 drm_object_attach_property(&connector->base, prop, 0);
266 }
267
268 void
intel_attach_aspect_ratio_property(struct drm_connector * connector)269 intel_attach_aspect_ratio_property(struct drm_connector *connector)
270 {
271 if (!drm_mode_create_aspect_ratio_property(connector->dev))
272 drm_object_attach_property(&connector->base,
273 connector->dev->mode_config.aspect_ratio_property,
274 DRM_MODE_PICTURE_ASPECT_NONE);
275 }
276
277 void
intel_attach_colorspace_property(struct drm_connector * connector)278 intel_attach_colorspace_property(struct drm_connector *connector)
279 {
280 if (!drm_mode_create_colorspace_property(connector))
281 drm_object_attach_property(&connector->base,
282 connector->colorspace_property, 0);
283 }
284