Slam in most of X.Org's i830_lvds (not quite done yet so removed from Makefile.kernel too).

1 files changed, 383 insertions, 40 deletions

diff --git a/linux-core/intel_lvds.c b/linux-core/intel_lvds.c
index a444f145..7527dfce 100644
--- a/linux-core/intel_lvds.c
+++ b/linux-core/intel_lvds.c
@@ -1,5 +1,6 @@
 /*
  * Copyright © 2006-2007 Intel Corporation
+ * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -22,10 +23,8 @@
  *
  * Authors:
  *	Eric Anholt <eric@anholt.net>
- */
-/*
- * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
- *   Jesse Barnes <jesse.barnes@intel.com>
+ *      Dave Airlie <airlied@linux.ie>
+ *      Jesse Barnes <jesse.barnes@intel.com>
  */
 
 #include <linux/i2c.h>
@@ -39,23 +38,22 @@
 /**
  * Sets the backlight level.
  *
- * \param level backlight level, from 0 to i830_lvds_get_max_backlight().
+ * \param level backlight level, from 0 to intel_lvds_get_max_backlight().
  */
-static void lvds_set_backlight(drm_device_t *dev, u32 level)
+static void intel_lvds_set_backlight(struct drm_device *dev, int level)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
-	unsigned long blc_pwm_ctl;
+	u32 blc_pwm_ctl;
 
-	level &= BACKLIGHT_DUTY_CYCLE_MASK;
 	blc_pwm_ctl = I915_READ(BLC_PWM_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK;
-	I915_WRITE(BLC_PWM_CTL, blc_pwm_ctl |
-		   (level << BACKLIGHT_DUTY_CYCLE_SHIFT));
+	I915_WRITE(BLC_PWM_CTL, (blc_pwm_ctl |
+				 (level << BACKLIGHT_DUTY_CYCLE_SHIFT)));
 }
 
 /**
  * Returns the maximum level of the backlight duty cycle field.
  */
-static u32 lvds_get_max_backlight(drm_device_t *dev)
+static u32 intel_lvds_get_max_backlight(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
     
@@ -63,30 +61,386 @@ static u32 lvds_get_max_backlight(drm_device_t *dev)
 		BACKLIGHT_MODULATION_FREQ_SHIFT) * 2;
 }
 
-int lvds_backlight(DRM_IOCTL_ARGS)
+/**
+ * Sets the power state for the panel.
+ */
+static void intel_lvds_set_power(struct drm_device *dev, bool on)
+{
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	u32 pp_status;
+
+	if (on) {
+		I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) |
+			   POWER_TARGET_ON);
+		do {
+			pp_status = I915_READ(PP_STATUS);
+		} while ((pp_status & PP_ON) == 0);
+
+		intel_lvds_set_backlight(dev, dev_priv->backlight_duty_cycle);
+	} else {
+		intel_lvds_set_backlight(dev, 0);
+
+		I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) &
+			   ~POWER_TARGET_ON);
+		do {
+			pp_status = I915_READ(PP_STATUS);
+		} while (pp_status & PP_ON);
+	}
+}
+
+static void intel_lvds_dpms(struct drm_output *output, int mode)
+{
+	struct drm_device *dev = output->dev;
+
+	if (mode == DPMSModeOn)
+		intel_lvds_set_power(dev, true);
+	else
+		intel_lvds_set_power(dev, false);
+
+	/* XXX: We never power down the LVDS pairs. */
+}
+
+static void intel_lvds_save(struct drm_output *output)
+{
+	struct drm_device *dev = output->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+
+	dev_priv->savePP_ON = I915_READ(LVDSPP_ON);
+	dev_priv->savePP_OFF = I915_READ(LVDSPP_OFF);
+	dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL);
+	dev_priv->savePP_CYCLE = I915_READ(PP_CYCLE);
+	dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL);
+	dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL &
+				       BACKLIGHT_DUTY_CYCLE_MASK);
+
+	/*
+	 * If the light is off at server startup, just make it full brightness
+	 */
+	if (dev_priv->backlight_duty_cycle == 0)
+		dev_priv->backlight_duty_cycle =
+			intel_lvds_get_max_backlight(dev);
+}
+
+static void intel_lvds_restore(struct drm_output *output)
+{
+	struct drm_device *dev = output->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+
+	I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL);
+	I915_WRITE(LVDSPP_ON, dev_priv->savePP_ON);
+	I915_WRITE(LVDSPP_OFF, dev_priv->savePP_OFF);
+	I915_WRITE(PP_CYCLE, dev_priv->savePP_CYCLE);
+	I915_WRITE(PP_CONTROL, dev_priv->savePP_CONTROL);
+	if (dev_priv->savePP_CONTROL & POWER_TARGET_ON)
+		intel_lvds_set_power(dev, true);
+	else
+		intel_lvds_set_power(dev, false);
+}
+
+static int intel_lvds_mode_valid(struct drm_output *output,
+				 struct drm_display_mode *mode)
+{
+	struct drm_device *dev = output->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct drm_display_mode *fixed_mode = dev_priv->panel_fixed_mode;
+
+	if (fixed_mode)	{
+		if (mode->hdisplay > fixed_mode->hdisplay)
+			return MODE_PANEL;
+		if (mode->vdisplay > fixed_mode->vdisplay)
+			return MODE_PANEL;
+	}
+
+	return MODE_OK;
+}
+
+static bool intel_lvds_mode_fixup(struct drm_output *output,
+				  struct drm_display_mode *mode,
+				  struct drm_display_mode *adjusted_mode)
+{
+	struct drm_device *dev = output->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = output->crtc->driver_private;
+	struct drm_output *tmp_output;
+
+	spin_lock(&dev->crtc_config.config_lock);
+	list_for_each_entry(tmp_output, &dev->crtc_config.output_list, head) {
+		if (tmp_output != output && tmp_output->crtc == output->crtc) {
+			printk(KERN_ERR "Can't enable LVDS and another "
+			       "output on the same pipe\n");
+			return false;
+		}
+	}
+	spin_lock(&dev->crtc_config.config_lock);
+
+	if (intel_crtc->pipe == 0) {
+		printk(KERN_ERR "Can't support LVDS on pipe A\n");
+		return false;
+	}
+
+	/*
+	 * If we have timings from the BIOS for the panel, put them in
+	 * to the adjusted mode.  The CRTC will be set up for this mode,
+	 * with the panel scaling set up to source from the H/VDisplay
+	 * of the original mode.
+	 */
+	if (dev_priv->panel_fixed_mode != NULL) {
+		adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay;
+		adjusted_mode->hsync_start =
+			dev_priv->panel_fixed_mode->hsync_start;
+		adjusted_mode->hsync_end =
+			dev_priv->panel_fixed_mode->hsync_end;
+		adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal;
+		adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay;
+		adjusted_mode->vsync_start =
+			dev_priv->panel_fixed_mode->vsync_start;
+		adjusted_mode->vsync_end =
+			dev_priv->panel_fixed_mode->vsync_end;
+		adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal;
+		adjusted_mode->clock = dev_priv->panel_fixed_mode->clock;
+//		xf86SetModeCrtc(adjusted_mode, INTERLACE_HALVE_V);
+	}
+
+	/*
+	 * XXX: It would be nice to support lower refresh rates on the
+	 * panels to reduce power consumption, and perhaps match the
+	 * user's requested refresh rate.
+	 */
+
+	return true;
+}
+
+static void intel_lvds_mode_set(struct drm_output *output,
+				struct drm_display_mode *mode,
+				struct drm_display_mode *adjusted_mode)
+{
+	struct drm_device *dev = output->dev;
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct intel_crtc *intel_crtc = output->crtc->driver_private;
+	u32 pfit_control;
+
+	/*
+	 * The LVDS pin pair will already have been turned on in the
+	 * intel_crtc_mode_set since it has a large impact on the DPLL
+	 * settings.
+	 */
+
+	/*
+	 * Enable automatic panel scaling so that non-native modes fill the
+	 * screen.  Should be enabled before the pipe is enabled, according to
+	 * register description and PRM.
+	 */
+	pfit_control = (PFIT_ENABLE | VERT_AUTO_SCALE | HORIZ_AUTO_SCALE |
+			VERT_INTERP_BILINEAR | HORIZ_INTERP_BILINEAR);
+
+	if (!IS_I965G(dev)) {
+		if (dev_priv->panel_wants_dither)
+			pfit_control |= PANEL_8TO6_DITHER_ENABLE;
+	}
+	else
+		pfit_control |= intel_crtc->pipe << PFIT_PIPE_SHIFT;
+
+	I915_WRITE(PFIT_CONTROL, pfit_control);
+}
+
+/**
+ * Detect the LVDS connection.
+ *
+ * This always returns OUTPUT_STATUS_CONNECTED.  This output should only have
+ * been set up if the LVDS was actually connected anyway.
+ */
+static enum drm_output_status intel_lvds_detect(struct drm_output *output)
+{
+	return output_status_connected;
+}
+
+/**
+ * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
+ */
+static int intel_lvds_get_modes(struct drm_output *output)
 {
-	DRM_DEVICE;
-	unsigned long dvoa_enabled, dvob_enabled, dvoc_enabled, lvds_enabled;
+	struct intel_output *intel_output = output->driver_private;
+	struct drm_device *dev = output->dev;
 	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct drm_monitor_info *edid_mon;
+	int ret = 0;
+
+	intel_output->ddc_bus = intel_i2c_create(dev, GPIOC, "LVDSDDC_C");
+	if (!intel_output->ddc_bus) {
+		dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
+			   "failed.\n");
+		return 0;
+	}
+	intel_i2c_destroy(intel_output->ddc_bus);
+
+	ret = intel_ddc_get_modes(output);
+	if (ret)
+		return ret;
+#if 0
+	if (!output->monitor_info) {
+		edid_mon = kzalloc(sizeof(*output->monitor_info), GFP_KERNEL);
+		if (edid_mon) {
+			/* Set wide sync ranges so we get all modes
+			 * handed to valid_mode for checking
+			 */
+			edid_mon->det_mon[0].type = DS_RANGES;
+			edid_mon->det_mon[0].section.ranges.min_v = 0;
+			edid_mon->det_mon[0].section.ranges.max_v = 200;
+			edid_mon->det_mon[0].section.ranges.min_h = 0;
+			edid_mon->det_mon[0].section.ranges.max_h = 200;
+	    
+			output->monitor_info = edid_mon;
+		}
+	}
+#endif
+	if (dev_priv->panel_fixed_mode != NULL) {
+		struct drm_display_mode *mode =
+			drm_mode_duplicate(dev, dev_priv->panel_fixed_mode);
+		drm_mode_probed_add(output, mode);
+		return 1;
+	}
 
-	printk(KERN_ERR "max backlight value: %d\n",
-	       lvds_get_max_backlight(dev));
-	dvoa_enabled = I915_READ(DVOA);
-	dvob_enabled = I915_READ(DVOB);
-	dvoc_enabled = I915_READ(DVOC);
-	lvds_enabled = I915_READ(LVDS);
-
-	printk(KERN_ERR "dvoa_enabled: 0x%08lx\n", dvoa_enabled);
-	printk(KERN_ERR "dvob_enabled: 0x%08lx\n", dvob_enabled);
-	printk(KERN_ERR "dvoc_enabled: 0x%08lx\n", dvoc_enabled);
-	printk(KERN_ERR "lvds_enabled: 0x%08lx\n", lvds_enabled);
-	printk(KERN_ERR "BLC_PWM_CTL: 0x%08x\n", I915_READ(BLC_PWM_CTL));
-	
 	return 0;
 }
 
-static const struct drm_output_funcs intel_lvds_output_funcs;
+static void intel_lvds_destroy(struct drm_output *output)
+{
+	drm_output_destroy(output);
+}
+
+static const struct drm_output_funcs intel_lvds_output_funcs = {
+	.dpms = intel_lvds_dpms,
+	.save = intel_lvds_save,
+	.restore = intel_lvds_restore,
+	.mode_valid = intel_lvds_mode_valid,
+	.mode_fixup = intel_lvds_mode_fixup,
+	.prepare = intel_output_prepare,
+	.mode_set = intel_lvds_mode_set,
+	.commit = intel_output_commit,
+	.detect = intel_lvds_detect,
+	.get_modes = intel_lvds_get_modes,
+	.cleanup = intel_lvds_destroy
+};
+
+void
+intel_lvds_init(struct drm_device *dev)
+{
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct drm_output *output;
+	struct intel_output *intel_output;
+	struct drm_display_mode *modes, scan, bios_mode;
+
+	output = drm_output_create(dev, &intel_lvds_output_funcs, "LVDS");
+	if (!output)
+		return;
+
+	intel_output = kmalloc(sizeof(struct intel_output), GFP_KERNEL);
+	if (!intel_output) {
+		drm_output_destroy(output);
+		return;
+	}
+
+	intel_output->type = INTEL_OUTPUT_LVDS;
+	output->driver_private = intel_output;
+	output->subpixel_order = SubPixelHorizontalRGB;
+	output->interlace_allowed = FALSE;
+	output->doublescan_allowed = FALSE;
+
+	/*
+	 * Attempt to get the fixed panel mode from DDC.  Assume that the
+	 * preferred mode is the right one.
+	 */
+	intel_ddc_get_modes(output);
+	list_for_each_entry(scan, &output->probed_modes, head) {
+		if (scan->type & DRM_MODE_TYPE_PREFERRED)
+			break;
+	}
+
+	if (scan != NULL)
+		dev_priv->panel_fixed_mode = scan;
+
+#if 0
+	/*
+	 * If we didn't get EDID, try checking if the panel is already turned
+	 * on.  If so, assume that whatever is currently programmed is the
+	 * correct mode.
+	 */
+	if (dev_priv->panel_fixed_mode == NULL) {
+		u32 lvds = I915_READ(LVDS);
+		int pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0;
+		struct drm_crtc_config *crtc_config = dev->crtc_config;
+		struct drm_crtc *crtc = crtc_config->crtc[pipe];
+
+		if (lvds & LVDS_PORT_EN) {
+			dev_priv->panel_fixed_mode = intel_crtc_mode_get(pScrn, crtc);
+			if (dev_priv->panel_fixed_mode != NULL)
+				dev_priv->panel_fixed_mode->type |= M_T_PREFERRED;
+		}
+	}
+
+	/* Get the LVDS fixed mode out of the BIOS.  We should support LVDS with
+	 * the BIOS being unavailable or broken, but lack the configuration options
+	 * for now.
+	 */
+	bios_mode = intel_bios_get_panel_mode(pScrn);
+	if (bios_mode != NULL) {
+		if (dev_priv->panel_fixed_mode != NULL) {
+			if (dev_priv->debug_modes &&
+			    !xf86ModesEqual(dev_priv->panel_fixed_mode, bios_mode))
+			{
+				xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
+					   "BIOS panel mode data doesn't match probed data, "
+					   "continuing with probed.\n");
+				xf86DrvMsg(pScrn->scrnIndex, X_INFO, "BIOS mode:\n");
+				xf86PrintModeline(pScrn->scrnIndex, bios_mode);
+				xf86DrvMsg(pScrn->scrnIndex, X_INFO, "probed mode:\n");
+				xf86PrintModeline(pScrn->scrnIndex, dev_priv->panel_fixed_mode);
+				xfree(bios_mode->name);
+				xfree(bios_mode);
+			}
+		}  else {
+			dev_priv->panel_fixed_mode = bios_mode;
+		}
+	} else {
+		xf86DrvMsg(pScrn->scrnIndex, X_WARNING,
+			   "Couldn't detect panel mode.  Disabling panel\n");
+		goto disable_exit;
+	}
+
+	/* Blacklist machines with BIOSes that list an LVDS panel without actually
+	 * having one.
+	 */
+	if (dev_priv->PciInfo->chipType == PCI_CHIP_I945_GM) {
+		if (dev_priv->PciInfo->subsysVendor == 0xa0a0)  /* aopen mini pc */
+			goto disable_exit;
+
+		if ((dev_priv->PciInfo->subsysVendor == 0x8086) &&
+		    (dev_priv->PciInfo->subsysCard == 0x7270)) {
+			/* It's a Mac Mini or Macbook Pro.
+			 *
+			 * Apple hardware is out to get us.  The macbook pro has a real
+			 * LVDS panel, but the mac mini does not, and they have the same
+			 * device IDs.  We'll distinguish by panel size, on the assumption
+			 * that Apple isn't about to make any machines with an 800x600
+			 * display.
+			 */
 
+			if (dev_priv->panel_fixed_mode != NULL &&
+			    dev_priv->panel_fixed_mode->HDisplay == 800 &&
+			    dev_priv->panel_fixed_mode->VDisplay == 600)
+			{
+				xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+					   "Suspected Mac Mini, ignoring the LVDS\n");
+				goto disable_exit;
+			}
+		}
+	}
+
+#endif
+	return;
+}
+
+#if 0
 /**
  * intel_lvds_init - setup LVDS outputs on this device
  * @dev: drm device
@@ -115,16 +469,5 @@ void intel_lvds_init(drm_device_t *dev)
 	output->subpixel_order = SubPixelHorizontalRGB;
 	output->interlace_allowed = 0;
 	output->doublescan_allowed = 0;
-
-	intel_output->ddc_bus = intel_i2c_create(dev, GPIOC, "LVDSDDC_C");
-	if (!intel_output->ddc_bus) {
-		dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration "
-			   "failed.\n");
-		return;
-	}
-
-	modes = intel_ddc_get_modes(output);
-	intel_i2c_destroy(intel_output->ddc_bus);
-	drm_output_destroy(output);
 }
-
+#endif