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 "i915_drv.h" 33 #include "intel_backlight.h" 34 #include "intel_connector.h" 35 #include "intel_display_debugfs.h" 36 #include "intel_display_types.h" 37 #include "intel_hdcp.h" 38 #include "intel_panel.h" 39 40 int intel_connector_init(struct intel_connector *connector) 41 { 42 struct intel_digital_connector_state *conn_state; 43 44 /* 45 * Allocate enough memory to hold intel_digital_connector_state, 46 * This might be a few bytes too many, but for connectors that don't 47 * need it we'll free the state and allocate a smaller one on the first 48 * successful commit anyway. 49 */ 50 conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL); 51 if (!conn_state) 52 return -ENOMEM; 53 54 __drm_atomic_helper_connector_reset(&connector->base, 55 &conn_state->base); 56 57 INIT_LIST_HEAD(&connector->panel.fixed_modes); 58 59 return 0; 60 } 61 62 struct intel_connector *intel_connector_alloc(void) 63 { 64 struct intel_connector *connector; 65 66 connector = kzalloc(sizeof(*connector), GFP_KERNEL); 67 if (!connector) 68 return NULL; 69 70 if (intel_connector_init(connector) < 0) { 71 kfree(connector); 72 return NULL; 73 } 74 75 return connector; 76 } 77 78 /* 79 * Free the bits allocated by intel_connector_alloc. 80 * This should only be used after intel_connector_alloc has returned 81 * successfully, and before drm_connector_init returns successfully. 82 * Otherwise the destroy callbacks for the connector and the state should 83 * take care of proper cleanup/free (see intel_connector_destroy). 84 */ 85 void intel_connector_free(struct intel_connector *connector) 86 { 87 kfree(to_intel_digital_connector_state(connector->base.state)); 88 kfree(connector); 89 } 90 91 /* 92 * Connector type independent destroy hook for drm_connector_funcs. 93 */ 94 void intel_connector_destroy(struct drm_connector *connector) 95 { 96 struct intel_connector *intel_connector = to_intel_connector(connector); 97 98 kfree(intel_connector->detect_edid); 99 100 intel_hdcp_cleanup(intel_connector); 101 102 if (!IS_ERR_OR_NULL(intel_connector->edid)) 103 kfree(intel_connector->edid); 104 105 intel_panel_fini(intel_connector); 106 107 drm_connector_cleanup(connector); 108 109 if (intel_connector->port) 110 drm_dp_mst_put_port_malloc(intel_connector->port); 111 112 kfree(connector); 113 } 114 115 int intel_connector_register(struct drm_connector *connector) 116 { 117 struct intel_connector *intel_connector = to_intel_connector(connector); 118 int ret; 119 120 ret = intel_backlight_device_register(intel_connector); 121 if (ret) 122 goto err; 123 124 if (i915_inject_probe_failure(to_i915(connector->dev))) { 125 ret = -EFAULT; 126 goto err_backlight; 127 } 128 129 intel_connector_debugfs_add(intel_connector); 130 131 return 0; 132 133 err_backlight: 134 intel_backlight_device_unregister(intel_connector); 135 err: 136 return ret; 137 } 138 139 void intel_connector_unregister(struct drm_connector *connector) 140 { 141 struct intel_connector *intel_connector = to_intel_connector(connector); 142 143 intel_backlight_device_unregister(intel_connector); 144 } 145 146 void intel_connector_attach_encoder(struct intel_connector *connector, 147 struct intel_encoder *encoder) 148 { 149 connector->encoder = encoder; 150 drm_connector_attach_encoder(&connector->base, &encoder->base); 151 } 152 153 /* 154 * Simple connector->get_hw_state implementation for encoders that support only 155 * one connector and no cloning and hence the encoder state determines the state 156 * of the connector. 157 */ 158 bool intel_connector_get_hw_state(struct intel_connector *connector) 159 { 160 enum pipe pipe = 0; 161 struct intel_encoder *encoder = intel_attached_encoder(connector); 162 163 return encoder->get_hw_state(encoder, &pipe); 164 } 165 166 enum pipe intel_connector_get_pipe(struct intel_connector *connector) 167 { 168 struct drm_device *dev = connector->base.dev; 169 170 drm_WARN_ON(dev, 171 !drm_modeset_is_locked(&dev->mode_config.connection_mutex)); 172 173 if (!connector->base.state->crtc) 174 return INVALID_PIPE; 175 176 return to_intel_crtc(connector->base.state->crtc)->pipe; 177 } 178 179 /** 180 * intel_connector_update_modes - update connector from edid 181 * @connector: DRM connector device to use 182 * @edid: previously read EDID information 183 */ 184 int intel_connector_update_modes(struct drm_connector *connector, 185 struct edid *edid) 186 { 187 int ret; 188 189 drm_connector_update_edid_property(connector, edid); 190 ret = drm_add_edid_modes(connector, edid); 191 192 return ret; 193 } 194 195 /** 196 * intel_ddc_get_modes - get modelist from monitor 197 * @connector: DRM connector device to use 198 * @adapter: i2c adapter 199 * 200 * Fetch the EDID information from @connector using the DDC bus. 201 */ 202 int intel_ddc_get_modes(struct drm_connector *connector, 203 struct i2c_adapter *adapter) 204 { 205 struct edid *edid; 206 int ret; 207 208 edid = drm_get_edid(connector, adapter); 209 if (!edid) 210 return 0; 211 212 ret = intel_connector_update_modes(connector, edid); 213 kfree(edid); 214 215 return ret; 216 } 217 218 static const struct drm_prop_enum_list force_audio_names[] = { 219 { HDMI_AUDIO_OFF_DVI, "force-dvi" }, 220 { HDMI_AUDIO_OFF, "off" }, 221 { HDMI_AUDIO_AUTO, "auto" }, 222 { HDMI_AUDIO_ON, "on" }, 223 }; 224 225 void 226 intel_attach_force_audio_property(struct drm_connector *connector) 227 { 228 struct drm_device *dev = connector->dev; 229 struct drm_i915_private *dev_priv = to_i915(dev); 230 struct drm_property *prop; 231 232 prop = dev_priv->display.properties.force_audio; 233 if (prop == NULL) { 234 prop = drm_property_create_enum(dev, 0, 235 "audio", 236 force_audio_names, 237 ARRAY_SIZE(force_audio_names)); 238 if (prop == NULL) 239 return; 240 241 dev_priv->display.properties.force_audio = prop; 242 } 243 drm_object_attach_property(&connector->base, prop, 0); 244 } 245 246 static const struct drm_prop_enum_list broadcast_rgb_names[] = { 247 { INTEL_BROADCAST_RGB_AUTO, "Automatic" }, 248 { INTEL_BROADCAST_RGB_FULL, "Full" }, 249 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" }, 250 }; 251 252 void 253 intel_attach_broadcast_rgb_property(struct drm_connector *connector) 254 { 255 struct drm_device *dev = connector->dev; 256 struct drm_i915_private *dev_priv = to_i915(dev); 257 struct drm_property *prop; 258 259 prop = dev_priv->display.properties.broadcast_rgb; 260 if (prop == NULL) { 261 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, 262 "Broadcast RGB", 263 broadcast_rgb_names, 264 ARRAY_SIZE(broadcast_rgb_names)); 265 if (prop == NULL) 266 return; 267 268 dev_priv->display.properties.broadcast_rgb = prop; 269 } 270 271 drm_object_attach_property(&connector->base, prop, 0); 272 } 273 274 void 275 intel_attach_aspect_ratio_property(struct drm_connector *connector) 276 { 277 if (!drm_mode_create_aspect_ratio_property(connector->dev)) 278 drm_object_attach_property(&connector->base, 279 connector->dev->mode_config.aspect_ratio_property, 280 DRM_MODE_PICTURE_ASPECT_NONE); 281 } 282 283 void 284 intel_attach_hdmi_colorspace_property(struct drm_connector *connector) 285 { 286 if (!drm_mode_create_hdmi_colorspace_property(connector)) 287 drm_connector_attach_colorspace_property(connector); 288 } 289 290 void 291 intel_attach_dp_colorspace_property(struct drm_connector *connector) 292 { 293 if (!drm_mode_create_dp_colorspace_property(connector)) 294 drm_connector_attach_colorspace_property(connector); 295 } 296