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 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 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 */ 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 */ 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 } 111 112 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 } 133 134 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 } 140 141 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 */ 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 } 160 161 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 */ 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 */ 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 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 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 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 278 intel_attach_colorspace_property(struct drm_connector *connector) 279 { 280 switch (connector->connector_type) { 281 case DRM_MODE_CONNECTOR_HDMIA: 282 case DRM_MODE_CONNECTOR_HDMIB: 283 if (drm_mode_create_hdmi_colorspace_property(connector)) 284 return; 285 break; 286 case DRM_MODE_CONNECTOR_DisplayPort: 287 case DRM_MODE_CONNECTOR_eDP: 288 if (drm_mode_create_dp_colorspace_property(connector)) 289 return; 290 break; 291 default: 292 DRM_DEBUG_KMS("Colorspace property not supported\n"); 293 return; 294 } 295 296 drm_object_attach_property(&connector->base, 297 connector->colorspace_property, 0); 298 } 299