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/*
* Copyright (C) 2008 Maarten Maathuis.
* All Rights Reserved.
*
* 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 COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS 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 "nv50_connector.h"
static struct nv50_output *nv50_connector_to_output(struct nv50_connector *connector, bool digital)
{
struct nv50_display *display = nv50_get_display(connector->dev);
struct nv50_output *output = NULL;
bool digital_possible = false;
bool analog_possible = false;
switch (connector->type) {
case CONNECTOR_VGA:
case CONNECTOR_TV:
analog_possible = true;
break;
case CONNECTOR_DVI_I:
analog_possible = true;
digital_possible = true;
break;
case CONNECTOR_DVI_D:
case CONNECTOR_LVDS:
digital_possible = true;
break;
default:
break;
}
/* Return early on bad situations. */
if (!analog_possible && !digital_possible)
return NULL;
if (!analog_possible && !digital)
return NULL;
if (!digital_possible && digital)
return NULL;
list_for_each_entry(output, &display->outputs, item) {
if (connector->bus != output->bus)
continue;
if (digital && output->type == OUTPUT_TMDS)
return output;
if (digital && output->type == OUTPUT_LVDS)
return output;
if (!digital && output->type == OUTPUT_DAC)
return output;
if (!digital && output->type == OUTPUT_TV)
return output;
}
return NULL;
}
static int nv50_connector_hpd_detect(struct nv50_connector *connector)
{
struct drm_nouveau_private *dev_priv = connector->dev->dev_private;
bool present = 0;
uint32_t reg = 0;
/* Assume connected for the moment. */
if (connector->type == CONNECTOR_LVDS) {
NV50_DEBUG("LVDS is defaulting to connected for the moment.\n");
return 1;
}
/* No i2c port, no idea what to do for hotplug. */
if (connector->i2c_chan->index == 15) {
DRM_ERROR("You have a non-LVDS SOR with no i2c port, please report\n");
return -EINVAL;
}
if (connector->i2c_chan->index > 3) {
DRM_ERROR("You have an unusual configuration, index is %d\n", connector->i2c_chan->index);
DRM_ERROR("Please report.\n");
return -EINVAL;
}
/* Check hotplug pins. */
reg = NV_READ(NV50_PCONNECTOR_HOTPLUG_STATE);
if (reg & (NV50_PCONNECTOR_HOTPLUG_STATE_PIN_CONNECTED_I2C0 << (4 * connector->i2c_chan->index)))
present = 1;
if (present)
NV50_DEBUG("Hotplug detect returned positive for bus %d\n", connector->bus);
else
NV50_DEBUG("Hotplug detect returned negative for bus %d\n", connector->bus);
return present;
}
static int nv50_connector_i2c_detect(struct nv50_connector *connector)
{
/* kindly borrrowed from the intel driver, hope it works. */
uint8_t out_buf[] = { 0x0, 0x0};
uint8_t buf[2];
int ret;
struct i2c_msg msgs[] = {
{
.addr = 0x50,
.flags = 0,
.len = 1,
.buf = out_buf,
},
{
.addr = 0x50,
.flags = I2C_M_RD,
.len = 1,
.buf = buf,
}
};
if (!connector->i2c_chan)
return -EINVAL;
ret = i2c_transfer(&connector->i2c_chan->adapter, msgs, 2);
NV50_DEBUG("I2C detect returned %d\n", ret);
if (ret == 2)
return true;
return false;
}
static int nv50_connector_destroy(struct nv50_connector *connector)
{
struct drm_device *dev = connector->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_display *display = nv50_get_display(dev);
NV50_DEBUG("\n");
if (!display || !connector)
return -EINVAL;
list_del(&connector->item);
if (connector->i2c_chan)
nv50_i2c_channel_destroy(connector->i2c_chan);
if (dev_priv->free_connector)
dev_priv->free_connector(connector);
return 0;
}
int nv50_connector_create(struct drm_device *dev, int bus, int i2c_index, int type)
{
struct nv50_connector *connector = NULL;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nv50_display *display = NULL;
NV50_DEBUG("\n");
/* This allows the public layer to do it's thing. */
if (dev_priv->alloc_connector)
connector = dev_priv->alloc_connector(dev);
if (!connector)
return -ENOMEM;
connector->dev = dev;
display = nv50_get_display(dev);
if (!display)
goto out;
if (type == CONNECTOR_UNKNOWN)
goto out;
list_add_tail(&connector->item, &display->connectors);
connector->bus = bus;
connector->type = type;
switch (type) {
case CONNECTOR_VGA:
DRM_INFO("Detected a VGA connector\n");
break;
case CONNECTOR_DVI_D:
DRM_INFO("Detected a DVI-D connector\n");
break;
case CONNECTOR_DVI_I:
DRM_INFO("Detected a DVI-I connector\n");
break;
case CONNECTOR_LVDS:
DRM_INFO("Detected a LVDS connector\n");
break;
case CONNECTOR_TV:
DRM_INFO("Detected a TV connector\n");
break;
default:
DRM_ERROR("Unknown connector, this is not good.\n");
break;
}
/* some reasonable defaults */
if (type == CONNECTOR_DVI_D || type == CONNECTOR_DVI_I || type == CONNECTOR_LVDS)
connector->requested_scaling_mode = SCALE_FULLSCREEN;
else
connector->requested_scaling_mode = SCALE_NON_GPU;
connector->use_dithering = false;
if (i2c_index < 0xf)
connector->i2c_chan = nv50_i2c_channel_create(dev, i2c_index);
/* set function pointers */
connector->hpd_detect = nv50_connector_hpd_detect;
connector->i2c_detect = nv50_connector_i2c_detect;
connector->destroy = nv50_connector_destroy;
connector->to_output = nv50_connector_to_output;
return 0;
out:
if (dev_priv->free_connector)
dev_priv->free_connector(connector);
return -EINVAL;
}
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