311 lines
8.4 KiB
C
311 lines
8.4 KiB
C
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/*
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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* Copyright (c) 2007, 2010 Intel Corporation
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* Jesse Barnes <jesse.barnes@intel.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_edid.h>
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#include "i915_drv.h"
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#include "intel_backlight.h"
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#include "intel_connector.h"
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#include "intel_display_debugfs.h"
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#include "intel_display_types.h"
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#include "intel_hdcp.h"
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#include "intel_panel.h"
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int intel_connector_init(struct intel_connector *connector)
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{
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struct intel_digital_connector_state *conn_state;
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/*
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* Allocate enough memory to hold intel_digital_connector_state,
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* This might be a few bytes too many, but for connectors that don't
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* need it we'll free the state and allocate a smaller one on the first
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* successful commit anyway.
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*/
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conn_state = kzalloc(sizeof(*conn_state), GFP_KERNEL);
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if (!conn_state)
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return -ENOMEM;
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__drm_atomic_helper_connector_reset(&connector->base,
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&conn_state->base);
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intel_panel_init_alloc(connector);
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return 0;
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}
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struct intel_connector *intel_connector_alloc(void)
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{
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struct intel_connector *connector;
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connector = kzalloc(sizeof(*connector), GFP_KERNEL);
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if (!connector)
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return NULL;
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if (intel_connector_init(connector) < 0) {
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kfree(connector);
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return NULL;
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}
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return connector;
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}
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/*
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* Free the bits allocated by intel_connector_alloc.
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* This should only be used after intel_connector_alloc has returned
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* successfully, and before drm_connector_init returns successfully.
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* Otherwise the destroy callbacks for the connector and the state should
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* take care of proper cleanup/free (see intel_connector_destroy).
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*/
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void intel_connector_free(struct intel_connector *connector)
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{
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kfree(to_intel_digital_connector_state(connector->base.state));
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kfree(connector);
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}
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/*
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* Connector type independent destroy hook for drm_connector_funcs.
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*/
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void intel_connector_destroy(struct drm_connector *connector)
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{
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struct intel_connector *intel_connector = to_intel_connector(connector);
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drm_edid_free(intel_connector->detect_edid);
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intel_hdcp_cleanup(intel_connector);
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intel_panel_fini(intel_connector);
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drm_connector_cleanup(connector);
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if (intel_connector->port)
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drm_dp_mst_put_port_malloc(intel_connector->port);
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kfree(connector);
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}
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int intel_connector_register(struct drm_connector *connector)
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{
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struct intel_connector *intel_connector = to_intel_connector(connector);
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int ret;
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ret = intel_backlight_device_register(intel_connector);
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if (ret)
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goto err;
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if (i915_inject_probe_failure(to_i915(connector->dev))) {
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ret = -EFAULT;
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goto err_backlight;
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}
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intel_connector_debugfs_add(intel_connector);
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return 0;
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err_backlight:
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intel_backlight_device_unregister(intel_connector);
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err:
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return ret;
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}
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void intel_connector_unregister(struct drm_connector *connector)
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{
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struct intel_connector *intel_connector = to_intel_connector(connector);
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intel_backlight_device_unregister(intel_connector);
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}
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void intel_connector_attach_encoder(struct intel_connector *connector,
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struct intel_encoder *encoder)
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{
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connector->encoder = encoder;
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drm_connector_attach_encoder(&connector->base, &encoder->base);
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}
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/*
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* Simple connector->get_hw_state implementation for encoders that support only
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* one connector and no cloning and hence the encoder state determines the state
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* of the connector.
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*/
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bool intel_connector_get_hw_state(struct intel_connector *connector)
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{
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enum pipe pipe = 0;
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struct intel_encoder *encoder = intel_attached_encoder(connector);
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return encoder->get_hw_state(encoder, &pipe);
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}
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enum pipe intel_connector_get_pipe(struct intel_connector *connector)
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{
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struct drm_device *dev = connector->base.dev;
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drm_WARN_ON(dev,
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!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
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if (!connector->base.state->crtc)
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return INVALID_PIPE;
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return to_intel_crtc(connector->base.state->crtc)->pipe;
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}
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/**
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* intel_connector_update_modes - update connector from edid
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* @connector: DRM connector device to use
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* @edid: previously read EDID information
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*/
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int intel_connector_update_modes(struct drm_connector *connector,
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struct edid *edid)
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{
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int ret;
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drm_connector_update_edid_property(connector, edid);
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ret = drm_add_edid_modes(connector, edid);
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return ret;
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}
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/**
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* intel_ddc_get_modes - get modelist from monitor
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* @connector: DRM connector device to use
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* @adapter: i2c adapter
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*
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* Fetch the EDID information from @connector using the DDC bus.
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*/
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int intel_ddc_get_modes(struct drm_connector *connector,
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struct i2c_adapter *adapter)
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{
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struct edid *edid;
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int ret;
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edid = drm_get_edid(connector, adapter);
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if (!edid)
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return 0;
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ret = intel_connector_update_modes(connector, edid);
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kfree(edid);
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return ret;
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}
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static const struct drm_prop_enum_list force_audio_names[] = {
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{ HDMI_AUDIO_OFF_DVI, "force-dvi" },
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{ HDMI_AUDIO_OFF, "off" },
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{ HDMI_AUDIO_AUTO, "auto" },
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{ HDMI_AUDIO_ON, "on" },
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};
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void
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intel_attach_force_audio_property(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct drm_i915_private *dev_priv = to_i915(dev);
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struct drm_property *prop;
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prop = dev_priv->display.properties.force_audio;
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if (prop == NULL) {
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prop = drm_property_create_enum(dev, 0,
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"audio",
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force_audio_names,
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ARRAY_SIZE(force_audio_names));
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if (prop == NULL)
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return;
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dev_priv->display.properties.force_audio = prop;
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}
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drm_object_attach_property(&connector->base, prop, 0);
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}
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static const struct drm_prop_enum_list broadcast_rgb_names[] = {
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{ INTEL_BROADCAST_RGB_AUTO, "Automatic" },
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{ INTEL_BROADCAST_RGB_FULL, "Full" },
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{ INTEL_BROADCAST_RGB_LIMITED, "Limited 16:235" },
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};
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void
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intel_attach_broadcast_rgb_property(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct drm_i915_private *dev_priv = to_i915(dev);
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struct drm_property *prop;
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prop = dev_priv->display.properties.broadcast_rgb;
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if (prop == NULL) {
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prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM,
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"Broadcast RGB",
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broadcast_rgb_names,
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ARRAY_SIZE(broadcast_rgb_names));
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if (prop == NULL)
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return;
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dev_priv->display.properties.broadcast_rgb = prop;
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}
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drm_object_attach_property(&connector->base, prop, 0);
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}
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void
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intel_attach_aspect_ratio_property(struct drm_connector *connector)
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{
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if (!drm_mode_create_aspect_ratio_property(connector->dev))
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drm_object_attach_property(&connector->base,
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connector->dev->mode_config.aspect_ratio_property,
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DRM_MODE_PICTURE_ASPECT_NONE);
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}
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void
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intel_attach_hdmi_colorspace_property(struct drm_connector *connector)
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{
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if (!drm_mode_create_hdmi_colorspace_property(connector))
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drm_connector_attach_colorspace_property(connector);
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}
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void
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intel_attach_dp_colorspace_property(struct drm_connector *connector)
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{
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if (!drm_mode_create_dp_colorspace_property(connector))
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drm_connector_attach_colorspace_property(connector);
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}
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void
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intel_attach_scaling_mode_property(struct drm_connector *connector)
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{
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struct drm_i915_private *i915 = to_i915(connector->dev);
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u32 scaling_modes;
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scaling_modes = BIT(DRM_MODE_SCALE_ASPECT) |
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BIT(DRM_MODE_SCALE_FULLSCREEN);
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/* On GMCH platforms borders are only possible on the LVDS port */
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if (!HAS_GMCH(i915) || connector->connector_type == DRM_MODE_CONNECTOR_LVDS)
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scaling_modes |= BIT(DRM_MODE_SCALE_CENTER);
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drm_connector_attach_scaling_mode_property(connector, scaling_modes);
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connector->state->scaling_mode = DRM_MODE_SCALE_ASPECT;
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}
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