1 files changed, 240 insertions, 0 deletions
diff --git a/linux-core/nv50_sor.c b/linux-core/nv50_sor.c
new file mode 100644
index 00000000..41116923
--- /dev/null
+++ b/linux-core/nv50_sor.c
@@ -0,0 +1,240 @@
+/*
+ * 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_output.h"
+
+static int nv50_sor_validate_mode(struct nv50_output *output, struct nouveau_hw_mode *mode)
+{
+	NV50_DEBUG("\n");
+
+	if (mode->clock > 165000) /* no dual link until we figure it out completely */
+		return MODE_CLOCK_HIGH;
+
+	if (mode->clock < 25000)
+		return MODE_CLOCK_LOW;
+
+	if (output->native_mode->hdisplay > 0 && output->native_mode->vdisplay > 0) {
+		if (mode->hdisplay > output->native_mode->hdisplay || mode->vdisplay > output->native_mode->vdisplay)
+			return MODE_PANEL;
+	}
+
+	return MODE_OK;
+}
+
+static int nv50_sor_execute_mode(struct nv50_output *output, bool disconnect)
+{
+	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
+	struct nv50_crtc *crtc = output->crtc;
+	struct nouveau_hw_mode *desired_mode = NULL;
+
+	uint32_t offset = nv50_output_or_offset(output) * 0x40;
+
+	uint32_t mode_ctl = NV50_SOR_MODE_CTRL_OFF;
+
+	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));
+
+	if (disconnect) {
+		NV50_DEBUG("Disconnecting SOR\n");
+		OUT_MODE(NV50_SOR0_MODE_CTRL + offset, mode_ctl);
+		return 0;
+	}
+
+	desired_mode = (crtc->use_native_mode ? crtc->native_mode : crtc->mode);
+
+	if (output->type == OUTPUT_LVDS) {
+		mode_ctl |= NV50_SOR_MODE_CTRL_LVDS;
+	} else {
+		mode_ctl |= NV50_SOR_MODE_CTRL_TMDS;
+		if (desired_mode->clock > 165000)
+			mode_ctl |= NV50_SOR_MODE_CTRL_TMDS_DUAL_LINK;
+	}
+
+	if (crtc->index == 1)
+		mode_ctl |= NV50_SOR_MODE_CTRL_CRTC1;
+	else
+		mode_ctl |= NV50_SOR_MODE_CTRL_CRTC0;
+
+	if (desired_mode->flags & DRM_MODE_FLAG_NHSYNC)
+		mode_ctl |= NV50_SOR_MODE_CTRL_NHSYNC;
+
+	if (desired_mode->flags & DRM_MODE_FLAG_NVSYNC)
+		mode_ctl |= NV50_SOR_MODE_CTRL_NVSYNC;
+
+	OUT_MODE(NV50_SOR0_MODE_CTRL + offset, mode_ctl);
+
+	return 0;
+}
+
+static int nv50_sor_set_clock_mode(struct nv50_output *output)
+{
+	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
+	struct nv50_crtc *crtc = output->crtc;
+
+	uint32_t limit = 165000;
+	struct nouveau_hw_mode *hw_mode;
+
+	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));
+
+	/* We don't yet know what to do, if anything at all. */
+	if (output->type == OUTPUT_LVDS)
+		return 0;
+
+	if (crtc->use_native_mode)
+		hw_mode = crtc->native_mode;
+	else
+		hw_mode = crtc->mode;
+
+	/* 0x70000 was a late addition to nv, mentioned as fixing tmds initialisation on certain gpu's. */
+	/* I presume it's some kind of clock setting, but what precisely i do not know. */
+	NV_WRITE(NV50_PDISPLAY_SOR_CLK_CLK_CTRL2(nv50_output_or_offset(output)), 0x70000 | ((hw_mode->clock > limit) ? 0x101 : 0));
+
+	return 0;
+}
+
+static int nv50_sor_set_power_mode(struct nv50_output *output, int mode)
+{
+	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
+	uint32_t val;
+	int or = nv50_output_or_offset(output);
+
+	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));
+
+	/* wait for it to be done */
+	while (NV_READ(NV50_PDISPLAY_SOR_REGS_DPMS_CTRL(or)) & NV50_PDISPLAY_SOR_REGS_DPMS_CTRL_PENDING);
+
+	val = NV_READ(NV50_PDISPLAY_SOR_REGS_DPMS_CTRL(or));
+
+	if (mode == DRM_MODE_DPMS_ON)
+		val |= NV50_PDISPLAY_SOR_REGS_DPMS_CTRL_ON;
+	else
+		val &= ~NV50_PDISPLAY_SOR_REGS_DPMS_CTRL_ON;
+
+	NV_WRITE(NV50_PDISPLAY_SOR_REGS_DPMS_CTRL(or), val | NV50_PDISPLAY_SOR_REGS_DPMS_CTRL_PENDING);
+
+	return 0;
+}
+
+static int nv50_sor_destroy(struct nv50_output *output)
+{
+	struct drm_device *dev = output->dev;
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nv50_display *display = nv50_get_display(dev);
+
+	NV50_DEBUG("\n");
+
+	if (!display || !output)
+		return -EINVAL;
+
+	list_del(&output->item);
+
+	kfree(output->native_mode);
+	if (dev_priv->free_output)
+		dev_priv->free_output(output);
+
+	return 0;
+}
+
+int nv50_sor_create(struct drm_device *dev, int dcb_entry)
+{
+	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	struct nv50_output *output = NULL;
+	struct nv50_display *display = NULL;
+	struct dcb_entry *entry = NULL;
+	int rval = 0;
+
+	NV50_DEBUG("\n");
+
+	/* This allows the public layer to do it's thing. */
+	if (dev_priv->alloc_output)
+		output = dev_priv->alloc_output(dev);
+
+	if (!output)
+		return -ENOMEM;
+
+	output->dev = dev;
+
+	display = nv50_get_display(dev);
+	if (!display) {
+		rval = -EINVAL;
+		goto out;
+	}
+
+	entry = &dev_priv->dcb_table.entry[dcb_entry];
+	if (!entry) {
+		rval = -EINVAL;
+		goto out;
+	}
+
+	switch (entry->type) {
+		case DCB_OUTPUT_TMDS:
+			output->type = OUTPUT_TMDS;
+			DRM_INFO("Detected a TMDS output\n");
+			break;
+		case DCB_OUTPUT_LVDS:
+			output->type = OUTPUT_LVDS;
+			DRM_INFO("Detected a LVDS output\n");
+			break;
+		default:
+			rval = -EINVAL;
+			goto out;
+	}
+
+	output->dcb_entry = dcb_entry;
+	output->bus = entry->bus;
+
+	list_add_tail(&output->item, &display->outputs);
+
+	output->native_mode = kzalloc(sizeof(struct nouveau_hw_mode), GFP_KERNEL);
+	if (!output->native_mode) {
+		rval = -ENOMEM;
+		goto out;
+	}
+
+	/* Set function pointers. */
+	output->validate_mode = nv50_sor_validate_mode;
+	output->execute_mode = nv50_sor_execute_mode;
+	output->set_clock_mode = nv50_sor_set_clock_mode;
+	output->set_power_mode = nv50_sor_set_power_mode;
+	output->detect = NULL;
+	output->destroy = nv50_sor_destroy;
+
+	/* Some default state, unknown what it precisely means. */
+	if (output->type == OUTPUT_TMDS) {
+		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_00C(nv50_output_or_offset(output)), 0x03010700);
+		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_010(nv50_output_or_offset(output)), 0x0000152f);
+		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_014(nv50_output_or_offset(output)), 0x00000000);
+		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_018(nv50_output_or_offset(output)), 0x00245af8);
+	}
+
+	return 0;
+
+out:
+	if (output->native_mode)
+		kfree(output->native_mode);
+	if (dev_priv->free_output)
+		dev_priv->free_output(output);
+	return rval;
+}