1 files changed, 245 insertions, 0 deletions
diff --git a/linux-core/nv50_connector.c b/linux-core/nv50_connector.c
new file mode 100644
index 00000000..34706bae
--- /dev/null
+++ b/linux-core/nv50_connector.c
@@ -0,0 +1,245 @@
+/*
+ * 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;
+}