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