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1/*2 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>3 * Copyright (c) 2007, 2010 Intel Corporation4 * Jesse Barnes <jesse.barnes@intel.com>5 *6 * Permission is hereby granted, free of charge, to any person obtaining a7 * copy of this software and associated documentation files (the "Software"),8 * to deal in the Software without restriction, including without limitation9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,10 * and/or sell copies of the Software, and to permit persons to whom the11 * Software is furnished to do so, subject to the following conditions:12 *13 * The above copyright notice and this permission notice (including the next14 * paragraph) shall be included in all copies or substantial portions of the15 * Software.16 *17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER23 * 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 40int 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't47 * need it we'll free the state and allocate a smaller one on the first48 * 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 intel_panel_init_alloc(connector);58 59 return 0;60}61 62struct 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 returned81 * successfully, and before drm_connector_init returns successfully.82 * Otherwise the destroy callbacks for the connector and the state should83 * take care of proper cleanup/free (see intel_connector_destroy).84 */85void 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 */94void intel_connector_destroy(struct drm_connector *connector)95{96 struct intel_connector *intel_connector = to_intel_connector(connector);97 98 drm_edid_free(intel_connector->detect_edid);99 100 intel_hdcp_cleanup(intel_connector);101 102 intel_panel_fini(intel_connector);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 112int 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 intel_connector_debugfs_add(intel_connector);127 128 return 0;129 130err_backlight:131 intel_backlight_device_unregister(intel_connector);132err:133 return ret;134}135 136void intel_connector_unregister(struct drm_connector *connector)137{138 struct intel_connector *intel_connector = to_intel_connector(connector);139 140 intel_backlight_device_unregister(intel_connector);141}142 143void intel_connector_attach_encoder(struct intel_connector *connector,144 struct intel_encoder *encoder)145{146 connector->encoder = encoder;147 drm_connector_attach_encoder(&connector->base, &encoder->base);148}149 150/*151 * Simple connector->get_hw_state implementation for encoders that support only152 * one connector and no cloning and hence the encoder state determines the state153 * of the connector.154 */155bool intel_connector_get_hw_state(struct intel_connector *connector)156{157 enum pipe pipe = 0;158 struct intel_encoder *encoder = intel_attached_encoder(connector);159 160 return encoder->get_hw_state(encoder, &pipe);161}162 163enum pipe intel_connector_get_pipe(struct intel_connector *connector)164{165 struct drm_device *dev = connector->base.dev;166 167 drm_WARN_ON(dev,168 !drm_modeset_is_locked(&dev->mode_config.connection_mutex));169 170 if (!connector->base.state->crtc)171 return INVALID_PIPE;172 173 return to_intel_crtc(connector->base.state->crtc)->pipe;174}175 176/**177 * intel_connector_update_modes - update connector from edid178 * @connector: DRM connector device to use179 * @drm_edid: previously read EDID information180 */181int intel_connector_update_modes(struct drm_connector *connector,182 const struct drm_edid *drm_edid)183{184 int ret;185 186 drm_edid_connector_update(connector, drm_edid);187 ret = drm_edid_connector_add_modes(connector);188 189 return ret;190}191 192/**193 * intel_ddc_get_modes - get modelist from monitor194 * @connector: DRM connector device to use195 * @ddc: DDC bus i2c adapter196 *197 * Fetch the EDID information from @connector using the DDC bus.198 */199int intel_ddc_get_modes(struct drm_connector *connector,200 struct i2c_adapter *ddc)201{202 const struct drm_edid *drm_edid;203 int ret;204 205 drm_edid = drm_edid_read_ddc(connector, ddc);206 if (!drm_edid)207 return 0;208 209 ret = intel_connector_update_modes(connector, drm_edid);210 drm_edid_free(drm_edid);211 212 return ret;213}214 215static const struct drm_prop_enum_list force_audio_names[] = {216 { HDMI_AUDIO_OFF_DVI, "force-dvi" },217 { HDMI_AUDIO_OFF, "off" },218 { HDMI_AUDIO_AUTO, "auto" },219 { HDMI_AUDIO_ON, "on" },220};221 222void223intel_attach_force_audio_property(struct drm_connector *connector)224{225 struct drm_device *dev = connector->dev;226 struct drm_i915_private *dev_priv = to_i915(dev);227 struct drm_property *prop;228 229 prop = dev_priv->display.properties.force_audio;230 if (prop == NULL) {231 prop = drm_property_create_enum(dev, 0,232 "audio",233 force_audio_names,234 ARRAY_SIZE(force_audio_names));235 if (prop == NULL)236 return;237 238 dev_priv->display.properties.force_audio = prop;239 }240 drm_object_attach_property(&connector->base, prop, 0);241}242 243static const struct drm_prop_enum_list broadcast_rgb_names[] = {244 { INTEL_BROADCAST_RGB_AUTO, "Automatic" },245 { INTEL_BROADCAST_RGB_FULL, "Full" },246 { INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },247};248 249void250intel_attach_broadcast_rgb_property(struct drm_connector *connector)251{252 struct drm_device *dev = connector->dev;253 struct drm_i915_private *dev_priv = to_i915(dev);254 struct drm_property *prop;255 256 prop = dev_priv->display.properties.broadcast_rgb;257 if (prop == NULL) {258 prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,259 "Broadcast RGB",260 broadcast_rgb_names,261 ARRAY_SIZE(broadcast_rgb_names));262 if (prop == NULL)263 return;264 265 dev_priv->display.properties.broadcast_rgb = prop;266 }267 268 drm_object_attach_property(&connector->base, prop, 0);269}270 271void272intel_attach_aspect_ratio_property(struct drm_connector *connector)273{274 if (!drm_mode_create_aspect_ratio_property(connector->dev))275 drm_object_attach_property(&connector->base,276 connector->dev->mode_config.aspect_ratio_property,277 DRM_MODE_PICTURE_ASPECT_NONE);278}279 280void281intel_attach_hdmi_colorspace_property(struct drm_connector *connector)282{283 if (!drm_mode_create_hdmi_colorspace_property(connector, 0))284 drm_connector_attach_colorspace_property(connector);285}286 287void288intel_attach_dp_colorspace_property(struct drm_connector *connector)289{290 if (!drm_mode_create_dp_colorspace_property(connector, 0))291 drm_connector_attach_colorspace_property(connector);292}293 294void295intel_attach_scaling_mode_property(struct drm_connector *connector)296{297 struct drm_i915_private *i915 = to_i915(connector->dev);298 u32 scaling_modes;299 300 scaling_modes = BIT(DRM_MODE_SCALE_ASPECT) |301 BIT(DRM_MODE_SCALE_FULLSCREEN);302 303 /* On GMCH platforms borders are only possible on the LVDS port */304 if (!HAS_GMCH(i915) || connector->connector_type == DRM_MODE_CONNECTOR_LVDS)305 scaling_modes |= BIT(DRM_MODE_SCALE_CENTER);306 307 drm_connector_attach_scaling_mode_property(connector, scaling_modes);308 309 connector->state->scaling_mode = DRM_MODE_SCALE_ASPECT;310}311