diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_modes.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_modes.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c new file mode 100644 index 00000000..d1928e79 --- /dev/null +++ b/drivers/gpu/drm/i915/intel_modes.c @@ -0,0 +1,140 @@ +/* + * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> + * Copyright (c) 2007, 2010 Intel Corporation + * Jesse Barnes <jesse.barnes@intel.com> + * + * 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/slab.h> +#include <linux/i2c.h> +#include <linux/fb.h> +#include <drm/drm_edid.h> +#include "drmP.h" +#include "drm_edid.h" +#include "intel_drv.h" +#include "i915_drv.h" + +/** + * intel_ddc_probe + * + */ +bool intel_ddc_probe(struct intel_encoder *intel_encoder, int ddc_bus) +{ + struct drm_i915_private *dev_priv = intel_encoder->base.dev->dev_private; + u8 out_buf[] = { 0x0, 0x0}; + u8 buf[2]; + struct i2c_msg msgs[] = { + { + .addr = DDC_ADDR, + .flags = 0, + .len = 1, + .buf = out_buf, + }, + { + .addr = DDC_ADDR, + .flags = I2C_M_RD, + .len = 1, + .buf = buf, + } + }; + + return i2c_transfer(&dev_priv->gmbus[ddc_bus].adapter, msgs, 2) == 2; +} + +/** + * intel_ddc_get_modes - get modelist from monitor + * @connector: DRM connector device to use + * @adapter: i2c adapter + * + * Fetch the EDID information from @connector using the DDC bus. + */ +int intel_ddc_get_modes(struct drm_connector *connector, + struct i2c_adapter *adapter) +{ + struct edid *edid; + int ret = 0; + + edid = drm_get_edid(connector, adapter); + if (edid) { + drm_mode_connector_update_edid_property(connector, edid); + ret = drm_add_edid_modes(connector, edid); + drm_edid_to_eld(connector, edid); + connector->display_info.raw_edid = NULL; + kfree(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 = dev->dev_private; + struct drm_property *prop; + + prop = dev_priv->force_audio_property; + 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->force_audio_property = prop; + } + drm_connector_attach_property(connector, prop, 0); +} + +static const struct drm_prop_enum_list broadcast_rgb_names[] = { + { 0, "Full" }, + { 1, "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 = dev->dev_private; + struct drm_property *prop; + + prop = dev_priv->broadcast_rgb_property; + 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->broadcast_rgb_property = prop; + } + + drm_connector_attach_property(connector, prop, 0); +} |