1 files changed, 265 insertions, 0 deletions
diff --git a/linux-core/nv50_dac.c b/linux-core/nv50_dac.c
new file mode 100644
index 00000000..5dddb469
--- /dev/null
+++ b/linux-core/nv50_dac.c
@@ -0,0 +1,265 @@
+/*
+ * 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_dac_validate_mode(struct nv50_output *output, struct nouveau_hw_mode *mode)
+{
+	NV50_DEBUG("\n");
+
+	if (mode->clock > 400000) 
+		return MODE_CLOCK_HIGH;
+
+	if (mode->clock < 25000)
+		return MODE_CLOCK_LOW;
+
+	return MODE_OK;
+}
+
+static int nv50_dac_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) * 0x80;
+
+	uint32_t mode_ctl = NV50_DAC_MODE_CTRL_OFF;
+	uint32_t mode_ctl2 = 0;
+
+	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));
+
+	if (disconnect) {
+		NV50_DEBUG("Disconnecting DAC\n");
+		OUT_MODE(NV50_DAC0_MODE_CTRL + offset, mode_ctl);
+		return 0;
+	}
+
+	desired_mode = (crtc->use_native_mode ? crtc->native_mode :
+									crtc->mode);
+
+	if (crtc->index == 1)
+		mode_ctl |= NV50_DAC_MODE_CTRL_CRTC1;
+	else
+		mode_ctl |= NV50_DAC_MODE_CTRL_CRTC0;
+
+	/* Lacking a working tv-out, this is not a 100% sure. */
+	if (output->type == OUTPUT_DAC) {
+		mode_ctl |= 0x40;
+	} else if (output->type == OUTPUT_TV) {
+		mode_ctl |= 0x100;
+	}
+
+	if (desired_mode->flags & DRM_MODE_FLAG_NHSYNC)
+		mode_ctl2 |= NV50_DAC_MODE_CTRL2_NHSYNC;
+
+	if (desired_mode->flags & DRM_MODE_FLAG_NVSYNC)
+		mode_ctl2 |= NV50_DAC_MODE_CTRL2_NVSYNC;
+
+	OUT_MODE(NV50_DAC0_MODE_CTRL + offset, mode_ctl);
+	OUT_MODE(NV50_DAC0_MODE_CTRL2 + offset, mode_ctl2);
+
+	return 0;
+}
+
+static int nv50_dac_set_clock_mode(struct nv50_output *output)
+{
+	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
+
+	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));
+
+	NV_WRITE(NV50_PDISPLAY_DAC_CLK_CLK_CTRL2(nv50_output_or_offset(output)),  0);
+
+	return 0;
+}
+
+static int nv50_dac_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", or);
+
+	/* wait for it to be done */
+	while (NV_READ(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or)) & NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_PENDING);
+
+	val = NV_READ(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or)) & ~0x7F;
+
+	if (mode != DRM_MODE_DPMS_ON)
+		val |= NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_BLANKED;
+
+	switch (mode) {
+		case DRM_MODE_DPMS_STANDBY:
+			val |= NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_HSYNC_OFF;
+			break;
+		case DRM_MODE_DPMS_SUSPEND:
+			val |= NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_VSYNC_OFF;
+			break;
+		case DRM_MODE_DPMS_OFF:
+			val |= NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_OFF;
+			val |= NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_HSYNC_OFF;
+			val |= NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_VSYNC_OFF;
+			break;
+		default:
+			break;
+	}
+
+	NV_WRITE(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or), val | NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_PENDING);
+
+	return 0;
+}
+
+static int nv50_dac_detect(struct nv50_output *output)
+{
+	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
+	int or = nv50_output_or_offset(output);
+	bool present = 0;
+	uint32_t dpms_state, load_pattern, load_state;
+
+	NV_WRITE(NV50_PDISPLAY_DAC_REGS_CLK_CTRL1(or), 0x00000001);
+	dpms_state = NV_READ(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or));
+
+	NV_WRITE(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or), 0x00150000 | NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_PENDING);
+	while (NV_READ(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or)) & NV50_PDISPLAY_DAC_REGS_DPMS_CTRL_PENDING);
+
+	/* Use bios provided value if possible. */
+	if (dev_priv->bios.dactestval) {
+		load_pattern = dev_priv->bios.dactestval;
+		NV50_DEBUG("Using bios provided load_pattern of %d\n", load_pattern);
+	} else {
+		load_pattern = 340;
+		NV50_DEBUG("Using default load_pattern of %d\n", load_pattern);
+	}
+
+	NV_WRITE(NV50_PDISPLAY_DAC_REGS_LOAD_CTRL(or), NV50_PDISPLAY_DAC_REGS_LOAD_CTRL_ACTIVE | load_pattern);
+	udelay(10000); /* give it some time to process */
+	load_state = NV_READ(NV50_PDISPLAY_DAC_REGS_LOAD_CTRL(or));
+
+	NV_WRITE(NV50_PDISPLAY_DAC_REGS_LOAD_CTRL(or), 0);
+	NV_WRITE(NV50_PDISPLAY_DAC_REGS_DPMS_CTRL(or), dpms_state);
+
+	if ((load_state & NV50_PDISPLAY_DAC_REGS_LOAD_CTRL_PRESENT) == NV50_PDISPLAY_DAC_REGS_LOAD_CTRL_PRESENT)
+		present = 1;
+
+	if (present)
+		NV50_DEBUG("Load was detected on output with or %d\n", or);
+	else
+		NV50_DEBUG("Load was not detected on output with or %d\n", or);
+
+	return present;
+}
+
+static int nv50_dac_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_dac_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_ANALOG:
+			output->type = OUTPUT_DAC;
+			DRM_INFO("Detected a DAC 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_dac_validate_mode;
+	output->execute_mode = nv50_dac_execute_mode;
+	output->set_clock_mode = nv50_dac_set_clock_mode;
+	output->set_power_mode = nv50_dac_set_power_mode;
+	output->detect = nv50_dac_detect;
+	output->destroy = nv50_dac_destroy;
+
+	return 0;
+
+out:
+	if (output->native_mode)
+		kfree(output->native_mode);
+	if (dev_priv->free_output)
+		dev_priv->free_output(output);
+	return rval;
+}
+