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 return 0; 58 } 59 60 struct intel_connector *intel_connector_alloc(void) 61 { 62 struct intel_connector *connector; 63 64 connector = kzalloc(sizeof(*connector), GFP_KERNEL); 65 if (!connector) 66 return NULL; 67 68 if (intel_connector_init(connector) < 0) { 69 kfree(connector); 70 return NULL; 71 } 72 73 return connector; 74 } 75 76 /* 77 * Free the bits allocated by intel_connector_alloc. 78 * This should only be used after intel_connector_alloc has returned 79 * successfully, and before drm_connector_init returns successfully. 80 * Otherwise the destroy callbacks for the connector and the state should 81 * take care of proper cleanup/free (see intel_connector_destroy). 82 */ 83 void intel_connector_free(struct intel_connector *connector) 84 { 85 kfree(to_intel_digital_connector_state(connector->base.state)); 86 kfree(connector); 87 } 88 89 /* 90 * Connector type independent destroy hook for drm_connector_funcs. 91 */ 92 void intel_connector_destroy(struct drm_connector *connector) 93 { 94 struct intel_connector *intel_connector = to_intel_connector(connector); 95 96 kfree(intel_connector->detect_edid); 97 98 intel_hdcp_cleanup(intel_connector); 99 100 if (!IS_ERR_OR_NULL(intel_connector->edid)) 101 kfree(intel_connector->edid); 102 103 intel_panel_fini(&intel_connector->panel); 104 105 drm_connector_cleanup(connector); 106 107 if (intel_connector->port) 108 drm_dp_mst_put_port_malloc(intel_connector->port); 109 110 kfree(connector); 111 } 112 113 int intel_connector_register(struct drm_connector *connector) 114 { 115 struct intel_connector *intel_connector = to_intel_connector(connector); 116 int ret; 117 118 ret = intel_backlight_device_register(intel_connector); 119 if (ret) 120 goto err; 121 122 if (i915_inject_probe_failure(to_i915(connector->dev))) { 123 ret = -EFAULT; 124 goto err_backlight; 125 } 126 127 intel_connector_debugfs_add(intel_connector); 128 129 return 0; 130 131 err_backlight: 132 intel_backlight_device_unregister(intel_connector); 133 err: 134 return ret; 135 } 136 137 void intel_connector_unregister(struct drm_connector *connector) 138 { 139 struct intel_connector *intel_connector = to_intel_connector(connector); 140 141 intel_backlight_device_unregister(intel_connector); 142 } 143 144 void intel_connector_attach_encoder(struct intel_connector *connector, 145 struct intel_encoder *encoder) 146 { 147 connector->encoder = encoder; 148 drm_connector_attach_encoder(&connector->base, &encoder->base); 149 } 150 151 /* 152 * Simple connector->get_hw_state implementation for encoders that support only 153 * one connector and no cloning and hence the encoder state determines the state 154 * of the connector. 155 */ 156 bool intel_connector_get_hw_state(struct intel_connector *connector) 157 { 158 enum pipe pipe = 0; 159 struct intel_encoder *encoder = intel_attached_encoder(connector); 160 161 return encoder->get_hw_state(encoder, &pipe); 162 } 163 164 enum pipe intel_connector_get_pipe(struct intel_connector *connector) 165 { 166 struct drm_device *dev = connector->base.dev; 167 168 drm_WARN_ON(dev, 169 !drm_modeset_is_locked(&dev->mode_config.connection_mutex)); 170 171 if (!connector->base.state->crtc) 172 return INVALID_PIPE; 173 174 return to_intel_crtc(connector->base.state->crtc)->pipe; 175 } 176 177 /** 178 * intel_connector_update_modes - update connector from edid 179 * @connector: DRM connector device to use 180 * @edid: previously read EDID information 181 */ 182 int intel_connector_update_modes(struct drm_connector *connector, 183 struct edid *edid) 184 { 185 int ret; 186 187 drm_connector_update_edid_property(connector, edid); 188 ret = drm_add_edid_modes(connector, edid); 189 190 return ret; 191 } 192 193 /** 194 * intel_ddc_get_modes - get modelist from monitor 195 * @connector: DRM connector device to use 196 * @adapter: i2c adapter 197 * 198 * Fetch the EDID information from @connector using the DDC bus. 199 */ 200 int intel_ddc_get_modes(struct drm_connector *connector, 201 struct i2c_adapter *adapter) 202 { 203 struct edid *edid; 204 int ret; 205 206 edid = drm_get_edid(connector, adapter); 207 if (!edid) 208 return 0; 209 210 ret = intel_connector_update_modes(connector, edid); 211 kfree(edid); 212 213 return ret; 214 } 215 216 static const struct drm_prop_enum_list force_audio_names[] = { 217 { HDMI_AUDIO_OFF_DVI, "force-dvi" }, 218 { HDMI_AUDIO_OFF, "off" }, 219 { HDMI_AUDIO_AUTO, "auto" }, 220 { HDMI_AUDIO_ON, "on" }, 221 }; 222 223 void 224 intel_attach_force_audio_property(struct drm_connector *connector) 225 { 226 struct drm_device *dev = connector->dev; 227 struct drm_i915_private *dev_priv = to_i915(dev); 228 struct drm_property *prop; 229 230 prop = dev_priv->force_audio_property; 231 if (prop == NULL) { 232 prop = drm_property_create_enum(dev, 0, 233 "audio", 234 force_audio_names, 235 ARRAY_SIZE(force_audio_names)); 236 if (prop == NULL) 237 return; 238 239 dev_priv->force_audio_property = prop; 240 } 241 drm_object_attach_property(&connector->base, prop, 0); 242 } 243 244 static const struct drm_prop_enum_list broadcast_rgb_names[] = { 245 { INTEL_BROADCAST_RGB_AUTO, "Automatic" }, 246 { INTEL_BROADCAST_RGB_FULL, "Full" }, 247 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" }, 248 }; 249 250 void 251 intel_attach_broadcast_rgb_property(struct drm_connector *connector) 252 { 253 struct drm_device *dev = connector->dev; 254 struct drm_i915_private *dev_priv = to_i915(dev); 255 struct drm_property *prop; 256 257 prop = dev_priv->broadcast_rgb_property; 258 if (prop == NULL) { 259 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, 260 "Broadcast RGB", 261 broadcast_rgb_names, 262 ARRAY_SIZE(broadcast_rgb_names)); 263 if (prop == NULL) 264 return; 265 266 dev_priv->broadcast_rgb_property = prop; 267 } 268 269 drm_object_attach_property(&connector->base, prop, 0); 270 } 271 272 void 273 intel_attach_aspect_ratio_property(struct drm_connector *connector) 274 { 275 if (!drm_mode_create_aspect_ratio_property(connector->dev)) 276 drm_object_attach_property(&connector->base, 277 connector->dev->mode_config.aspect_ratio_property, 278 DRM_MODE_PICTURE_ASPECT_NONE); 279 } 280 281 void 282 intel_attach_hdmi_colorspace_property(struct drm_connector *connector) 283 { 284 if (!drm_mode_create_hdmi_colorspace_property(connector)) 285 drm_connector_attach_colorspace_property(connector); 286 } 287 288 void 289 intel_attach_dp_colorspace_property(struct drm_connector *connector) 290 { 291 if (!drm_mode_create_dp_colorspace_property(connector)) 292 drm_connector_attach_colorspace_property(connector); 293 } 294