WebSVN – Kolibri OS – Diff – /drivers/video/drm/drm_crtc_helper.c

 /*
  * Copyright (c) 2006-2008 Intel Corporation
  * Copyright (c) 2007 Dave Airlie
+ *
  * DRM core CRTC related functions
+ *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
  * the above copyright notice appear in all copies and that both that copyright
  * notice and this permission notice appear in supporting documentation, and
  * that the name of the copyright holders not be used in advertising or
  * publicity pertaining to distribution of the software without specific,
  * written prior permission.  The copyright holders make no representations
  * about the suitability of this software for any purpose.  It is provided "as
  * is" without express or implied warranty.
+ *
  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  * OF THIS SOFTWARE.
+ *
  * Authors:
  *      Keith Packard
  *	Eric Anholt
  *      Dave Airlie
  *      Jesse Barnes
  */
 #include "drmP.h"
 #include "drm_crtc.h"
 #include "drm_crtc_helper.h"
 #include "drm_fb_helper.h"
+static bool drm_kms_helper_poll = true;
 static void drm_mode_validate_flag(struct drm_connector *connector,
 				   int flags)
+{
 	struct drm_display_mode *mode, *t;
 	if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE))
 		return;
 	list_for_each_entry_safe(mode, t, &connector->modes, head) {
 		if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
 				!(flags & DRM_MODE_FLAG_INTERLACE))
 			mode->status = MODE_NO_INTERLACE;
 		if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
 				!(flags & DRM_MODE_FLAG_DBLSCAN))
 			mode->status = MODE_NO_DBLESCAN;
+	}
 	return;
+}
 /**
- * drm_helper_probe_connector_modes - get complete set of display modes
+ * drm_helper_probe_single_connector_modes - get complete set of display modes
  * @dev: DRM device
  * @maxX: max width for modes
  * @maxY: max height for modes
+ *
  * LOCKING:
  * Caller must hold mode config lock.
+ *
  * Based on @dev's mode_config layout, scan all the connectors and try to detect
  * modes on them.  Modes will first be added to the connector's probed_modes
  * list, then culled (based on validity and the @maxX, @maxY parameters) and
  * put into the normal modes list.
+ *
  * Intended to be used either at bootup time or when major configuration
  * changes have occurred.
+ *
  * FIXME: take into account monitor limits
+ *
  * RETURNS:
  * Number of modes found on @connector.
  */
 int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
 					    uint32_t maxX, uint32_t maxY)
+{
 	struct drm_device *dev = connector->dev;
 	struct drm_display_mode *mode, *t;
 	struct drm_connector_helper_funcs *connector_funcs =
 		connector->helper_private;
 	int count = 0;
 	int mode_flags = 0;
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id,
-	DRM_DEBUG_KMS("%s\n", drm_get_connector_name(connector));
+			drm_get_connector_name(connector));
 	/* set all modes to the unverified state */
 	list_for_each_entry_safe(mode, t, &connector->modes, head)
 		mode->status = MODE_UNVERIFIED;
 	if (connector->force) {
 		if (connector->force == DRM_FORCE_ON)
 			connector->status = connector_status_connected;
 		else
 			connector->status = connector_status_disconnected;
 		if (connector->funcs->force)
 			connector->funcs->force(connector);
-	} else
+	} else {
-	connector->status = connector->funcs->detect(connector);
+		connector->status = connector->funcs->detect(connector, true);
+//		drm_kms_helper_poll_enable(dev);
+	}
 	if (connector->status == connector_status_disconnected) {
-		DRM_DEBUG_KMS("%s is disconnected\n",
+		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
+			connector->base.id, drm_get_connector_name(connector));
-			  drm_get_connector_name(connector));
+		drm_mode_connector_update_edid_property(connector, NULL);
 		goto prune;
+	}
 	count = (*connector_funcs->get_modes)(connector);
-	if (!count) {
+	if (count == 0 && connector->status == connector_status_connected)
 		count = drm_add_modes_noedid(connector, 1024, 768);
-	if (!count)
+	if (count == 0)
-		return 0;
+		goto prune;
-	}
 	drm_mode_connector_list_update(connector);
 	if (maxX && maxY)
 		drm_mode_validate_size(dev, &connector->modes, maxX,
 				       maxY, 0);
 	if (connector->interlace_allowed)
 		mode_flags |= DRM_MODE_FLAG_INTERLACE;
 	if (connector->doublescan_allowed)
 		mode_flags |= DRM_MODE_FLAG_DBLSCAN;
 	drm_mode_validate_flag(connector, mode_flags);
 	list_for_each_entry_safe(mode, t, &connector->modes, head) {
 		if (mode->status == MODE_OK)
 			mode->status = connector_funcs->mode_valid(connector,
 								   mode);
+	}
 prune:
 	drm_mode_prune_invalid(dev, &connector->modes, true);
 	if (list_empty(&connector->modes))
 		return 0;
 	drm_mode_sort(&connector->modes);
-	DRM_DEBUG_KMS("Probed modes for %s\n",
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
 				drm_get_connector_name(connector));
 	list_for_each_entry_safe(mode, t, &connector->modes, head) {
 		mode->vrefresh = drm_mode_vrefresh(mode);
 		drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
 		drm_mode_debug_printmodeline(mode);
+	}
 	return count;
+}
 EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
-int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX,
-				      uint32_t maxY)
-{
-	struct drm_connector *connector;
-	int count = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		count += drm_helper_probe_single_connector_modes(connector,
-								 maxX, maxY);
-	}
-	return count;
-}
-EXPORT_SYMBOL(drm_helper_probe_connector_modes);
 /**
  * drm_helper_encoder_in_use - check if a given encoder is in use
  * @encoder: encoder to check
+ *
  * LOCKING:
  * Caller must hold mode config lock.
+ *
  * Walk @encoders's DRM device's mode_config and see if it's in use.
+ *
  * RETURNS:
  * True if @encoder is part of the mode_config, false otherwise.
  */
 bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
+{
 	struct drm_connector *connector;
 	struct drm_device *dev = encoder->dev;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 		if (connector->encoder == encoder)
 			return true;
 	return false;
+}
 EXPORT_SYMBOL(drm_helper_encoder_in_use);
 /**
  * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
  * @crtc: CRTC to check
+ *
  * LOCKING:
  * Caller must hold mode config lock.
+ *
  * Walk @crtc's DRM device's mode_config and see if it's in use.
+ *
  * RETURNS:
  * True if @crtc is part of the mode_config, false otherwise.
  */
 bool drm_helper_crtc_in_use(struct drm_crtc *crtc)
+{
 	struct drm_encoder *encoder;
 	struct drm_device *dev = crtc->dev;
 	/* FIXME: Locking around list access? */
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
 		if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
 			return true;
 	return false;
+}
 EXPORT_SYMBOL(drm_helper_crtc_in_use);
+static void
+drm_encoder_disable(struct drm_encoder *encoder)
+{
+	struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+	if (encoder_funcs->disable)
+		(*encoder_funcs->disable)(encoder);
+	else
+		(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+}
 /**
  * drm_helper_disable_unused_functions - disable unused objects
  * @dev: DRM device
+ *
  * LOCKING:
  * Caller must hold mode config lock.
+ *
  * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled
  * by calling its dpms function, which should power it off.
  */
 void drm_helper_disable_unused_functions(struct drm_device *dev)
+{
 	struct drm_encoder *encoder;
 	struct drm_connector *connector;
-	struct drm_encoder_helper_funcs *encoder_funcs;
 	struct drm_crtc *crtc;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		if (!connector->encoder)
 			continue;
 		if (connector->status == connector_status_disconnected)
 			connector->encoder = NULL;
+	}
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		encoder_funcs = encoder->helper_private;
 		if (!drm_helper_encoder_in_use(encoder)) {
-			if (encoder_funcs->disable)
-				(*encoder_funcs->disable)(encoder);
+			drm_encoder_disable(encoder);
-			else
-			(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
 			/* disconnector encoder from any connector */
 			encoder->crtc = NULL;
+		}
+	}
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
 		crtc->enabled = drm_helper_crtc_in_use(crtc);
 		if (!crtc->enabled) {
+			if (crtc_funcs->disable)
+				(*crtc_funcs->disable)(crtc);
+			else
-			crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
+				(*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF);
 			crtc->fb = NULL;
+		}
+	}
+}
 EXPORT_SYMBOL(drm_helper_disable_unused_functions);
-static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height)
-{
-	struct drm_display_mode *mode;
-	list_for_each_entry(mode, &connector->modes, head) {
-		if (drm_mode_width(mode) > width ||
-		    drm_mode_height(mode) > height)
-			continue;
-		if (mode->type & DRM_MODE_TYPE_PREFERRED)
-			return mode;
-	}
-	return NULL;
-}
-static bool drm_has_cmdline_mode(struct drm_connector *connector)
-{
-	struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
-	struct drm_fb_helper_cmdline_mode *cmdline_mode;
-	if (!fb_help_conn)
-		return false;
-	cmdline_mode = &fb_help_conn->cmdline_mode;
-	return cmdline_mode->specified;
-}
-static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height)
-{
-	struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private;
-	struct drm_fb_helper_cmdline_mode *cmdline_mode;
-	struct drm_display_mode *mode = NULL;
-	if (!fb_help_conn)
-		return mode;
-	cmdline_mode = &fb_help_conn->cmdline_mode;
-	if (cmdline_mode->specified == false)
-		return mode;
-	/* attempt to find a matching mode in the list of modes
-	 *  we have gotten so far, if not add a CVT mode that conforms
-	 */
-	if (cmdline_mode->rb || cmdline_mode->margins)
-		goto create_mode;
-	list_for_each_entry(mode, &connector->modes, head) {
-		/* check width/height */
-		if (mode->hdisplay != cmdline_mode->xres ||
-		    mode->vdisplay != cmdline_mode->yres)
-			continue;
-		if (cmdline_mode->refresh_specified) {
-			if (mode->vrefresh != cmdline_mode->refresh)
-				continue;
-		}
-		if (cmdline_mode->interlace) {
-			if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
-				continue;
-		}
-		return mode;
-	}
-create_mode:
-	mode = drm_cvt_mode(connector->dev, cmdline_mode->xres,
-			    cmdline_mode->yres,
-			    cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60,
-			    cmdline_mode->rb, cmdline_mode->interlace,
-			    cmdline_mode->margins);
-	drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
-	list_add(&mode->head, &connector->modes);
-	return mode;
-}
-static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
-{
-	bool enable;
-	if (strict) {
-		enable = connector->status == connector_status_connected;
-	} else {
-		enable = connector->status != connector_status_disconnected;
-	}
-	return enable;
-}
-static void drm_enable_connectors(struct drm_device *dev, bool *enabled)
-{
-	bool any_enabled = false;
-	struct drm_connector *connector;
-	int i = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		enabled[i] = drm_connector_enabled(connector, true);
-		DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
-			  enabled[i] ? "yes" : "no");
-		any_enabled |= enabled[i];
-		i++;
-	}
-	if (any_enabled)
-		return;
-	i = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		enabled[i] = drm_connector_enabled(connector, false);
-		i++;
-	}
-}
-static bool drm_target_preferred(struct drm_device *dev,
-				 struct drm_display_mode **modes,
-				 bool *enabled, int width, int height)
-{
-	struct drm_connector *connector;
-	int i = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		if (enabled[i] == false) {
-			i++;
-			continue;
-		}
-		DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
-			      connector->base.id);
-		/* got for command line mode first */
-		modes[i] = drm_pick_cmdline_mode(connector, width, height);
-		if (!modes[i]) {
-		DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
-			  connector->base.id);
-		modes[i] = drm_has_preferred_mode(connector, width, height);
-		}
-		/* No preferred modes, pick one off the list */
-		if (!modes[i] && !list_empty(&connector->modes)) {
-			list_for_each_entry(modes[i], &connector->modes, head)
-				break;
-		}
-		DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name :
-			  "none");
-		i++;
-	}
-	return true;
-}
-static int drm_pick_crtcs(struct drm_device *dev,
-			  struct drm_crtc **best_crtcs,
-			  struct drm_display_mode **modes,
-			  int n, int width, int height)
-{
-	int c, o;
-	struct drm_connector *connector;
-	struct drm_connector_helper_funcs *connector_funcs;
-	struct drm_encoder *encoder;
-	struct drm_crtc *best_crtc;
-	int my_score, best_score, score;
-	struct drm_crtc **crtcs, *crtc;
-	if (n == dev->mode_config.num_connector)
-		return 0;
-	c = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		if (c == n)
-			break;
-		c++;
-	}
-	best_crtcs[n] = NULL;
-	best_crtc = NULL;
-	best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height);
-	if (modes[n] == NULL)
-		return best_score;
-	crtcs = kmalloc(dev->mode_config.num_connector *
-			sizeof(struct drm_crtc *), GFP_KERNEL);
-	if (!crtcs)
-		return best_score;
-	my_score = 1;
-	if (connector->status == connector_status_connected)
-		my_score++;
-	if (drm_has_cmdline_mode(connector))
-		my_score++;
-	if (drm_has_preferred_mode(connector, width, height))
-		my_score++;
-	connector_funcs = connector->helper_private;
-	encoder = connector_funcs->best_encoder(connector);
-	if (!encoder)
-		goto out;
-	connector->encoder = encoder;
-	/* select a crtc for this connector and then attempt to configure
-	   remaining connectors */
-	c = 0;
-	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
-		if ((encoder->possible_crtcs & (1 << c)) == 0) {
-			c++;
-			continue;
-		}
-		for (o = 0; o < n; o++)
-			if (best_crtcs[o] == crtc)
-				break;
-		if (o < n) {
-			/* ignore cloning for now */
-			c++;
-			continue;
-		}
-		crtcs[n] = crtc;
-		memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *));
-		score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1,
-						  width, height);
-		if (score > best_score) {
-			best_crtc = crtc;
-			best_score = score;
-			memcpy(best_crtcs, crtcs,
-			       dev->mode_config.num_connector *
-			       sizeof(struct drm_crtc *));
-		}
-		c++;
-	}
-out:
-	kfree(crtcs);
-	return best_score;
-}
-static void drm_setup_crtcs(struct drm_device *dev)
-{
-	struct drm_crtc **crtcs;
-	struct drm_display_mode **modes;
-	struct drm_encoder *encoder;
-	struct drm_connector *connector;
-	bool *enabled;
-	int width, height;
-	int i, ret;
-	DRM_DEBUG_KMS("\n");
-	width = dev->mode_config.max_width;
-	height = dev->mode_config.max_height;
-	/* clean out all the encoder/crtc combos */
-	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		encoder->crtc = NULL;
-	}
-	crtcs = kcalloc(dev->mode_config.num_connector,
-			sizeof(struct drm_crtc *), GFP_KERNEL);
-	modes = kcalloc(dev->mode_config.num_connector,
-			sizeof(struct drm_display_mode *), GFP_KERNEL);
-	enabled = kcalloc(dev->mode_config.num_connector,
-			  sizeof(bool), GFP_KERNEL);
-	drm_enable_connectors(dev, enabled);
-	ret = drm_target_preferred(dev, modes, enabled, width, height);
-	if (!ret)
-		DRM_ERROR("Unable to find initial modes\n");
-	DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height);
-	drm_pick_crtcs(dev, crtcs, modes, 0, width, height);
-	i = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		struct drm_display_mode *mode = modes[i];
-		struct drm_crtc *crtc = crtcs[i];
-		if (connector->encoder == NULL) {
-			i++;
-			continue;
-		}
-		if (mode && crtc) {
-			DRM_DEBUG_KMS("desired mode %s set on crtc %d\n",
-				  mode->name, crtc->base.id);
-			crtc->desired_mode = mode;
-			connector->encoder->crtc = crtc;
-		} else {
-			connector->encoder->crtc = NULL;
-			connector->encoder = NULL;
-		}
-		i++;
-	}
-	kfree(crtcs);
-	kfree(modes);
-	kfree(enabled);
-}
 /**
  * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
  * @encoder: encoder to test
  * @crtc: crtc to test
+ *
  * Return false if @encoder can't be driven by @crtc, true otherwise.
  */
 static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
 				struct drm_crtc *crtc)
+{
 	struct drm_device *dev;
 	struct drm_crtc *tmp;
 	int crtc_mask = 1;
-	WARN(!crtc, "checking null crtc?");
+	WARN(!crtc, "checking null crtc?\n");
 	dev = crtc->dev;
 	list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
 		if (tmp == crtc)
 			break;
 		crtc_mask <<= 1;
+	}
 	if (encoder->possible_crtcs & crtc_mask)
 		return true;
 	return false;
+}
 /*
  * Check the CRTC we're going to map each output to vs. its current
  * CRTC.  If they don't match, we have to disable the output and the CRTC
  * since the driver will have to re-route things.
  */
 static void
 drm_crtc_prepare_encoders(struct drm_device *dev)
+{
 	struct drm_encoder_helper_funcs *encoder_funcs;
 	struct drm_encoder *encoder;
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		encoder_funcs = encoder->helper_private;
 		/* Disable unused encoders */
 		if (encoder->crtc == NULL)
-			(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+			drm_encoder_disable(encoder);
 		/* Disable encoders whose CRTC is about to change */
 		if (encoder_funcs->get_crtc &&
 		    encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
-			(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+			drm_encoder_disable(encoder);
+	}
+}
 /**
  * drm_crtc_set_mode - set a mode
  * @crtc: CRTC to program
  * @mode: mode to use
  * @x: width of mode
  * @y: height of mode
+ *
  * LOCKING:
  * Caller must hold mode config lock.
+ *
  * Try to set @mode on @crtc.  Give @crtc and its associated connectors a chance
  * to fixup or reject the mode prior to trying to set it.
+ *
  * RETURNS:
  * True if the mode was set successfully, or false otherwise.
  */
 bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
 			      struct drm_display_mode *mode,
 			      int x, int y,
 			      struct drm_framebuffer *old_fb)
+{
 	struct drm_device *dev = crtc->dev;
-	struct drm_display_mode *adjusted_mode, saved_mode;
+	struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
 	struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
 	struct drm_encoder_helper_funcs *encoder_funcs;
 	int saved_x, saved_y;
 	struct drm_encoder *encoder;
 	bool ret = true;
-	adjusted_mode = drm_mode_duplicate(dev, mode);
-	crtc->enabled = drm_helper_crtc_in_use(crtc);
 	crtc->enabled = drm_helper_crtc_in_use(crtc);
 	if (!crtc->enabled)
 		return true;
+	adjusted_mode = drm_mode_duplicate(dev, mode);
 	saved_hwmode = crtc->hwmode;
 	saved_mode = crtc->mode;
 	saved_x = crtc->x;
 	saved_y = crtc->y;
 	/* Update crtc values up front so the driver can rely on them for mode
 	 * setting.
 	 */
 	crtc->mode = *mode;
 	crtc->x = x;
 	crtc->y = y;
 	/* Pass our mode to the connectors and the CRTC to give them a chance to
 	 * adjust it according to limitations or connector properties, and also
 	 * a chance to reject the mode entirely.
 	 */
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		if (encoder->crtc != crtc)
 			continue;
 		encoder_funcs = encoder->helper_private;
 		if (!(ret = encoder_funcs->mode_fixup(encoder, mode,
 						      adjusted_mode))) {
 			goto done;
+		}
+	}
 	if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
 		goto done;
+	}
+	DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
 	/* Prepare the encoders and CRTCs before setting the mode. */
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		if (encoder->crtc != crtc)
 			continue;
 		encoder_funcs = encoder->helper_private;
 		/* Disable the encoders as the first thing we do. */
 		encoder_funcs->prepare(encoder);
+	}
 	drm_crtc_prepare_encoders(dev);
 	crtc_funcs->prepare(crtc);
 	/* Set up the DPLL and any encoders state that needs to adjust or depend
 	 * on the DPLL.
 	 */
 	ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
 	if (!ret)
 	    goto done;
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		if (encoder->crtc != crtc)
 			continue;
+		DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
-		DRM_DEBUG("%s: set mode %s %x\n", drm_get_encoder_name(encoder),
+			encoder->base.id, drm_get_encoder_name(encoder),
-			 mode->name, mode->base.id);
+			mode->base.id, mode->name);
 		encoder_funcs = encoder->helper_private;
 		encoder_funcs->mode_set(encoder, mode, adjusted_mode);
+	}
 	/* Now enable the clocks, plane, pipe, and connectors that we set up. */
 	crtc_funcs->commit(crtc);
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		if (encoder->crtc != crtc)
 			continue;
 		encoder_funcs = encoder->helper_private;
 		encoder_funcs->commit(encoder);
+	}
-	/* XXX free adjustedmode */
+	/* Store real post-adjustment hardware mode. */
+	crtc->hwmode = *adjusted_mode;
+	/* Calculate and store various constants which
+	 * are later needed by vblank and swap-completion
+	 * timestamping. They are derived from true hwmode.
+	 */
+	drm_calc_timestamping_constants(crtc);
 	drm_mode_destroy(dev, adjusted_mode);
 	/* FIXME: add subpixel order */
+done:
-done:
+	drm_mode_destroy(dev, adjusted_mode);
+	if (!ret) {
-	if (!ret) {
+		crtc->hwmode = saved_hwmode;
 		crtc->mode = saved_mode;
 		crtc->x = saved_x;
 		crtc->y = saved_y;
+	}
 	return ret;
+}
 EXPORT_SYMBOL(drm_crtc_helper_set_mode);
 /**
  * drm_crtc_helper_set_config - set a new config from userspace
  * @crtc: CRTC to setup
  * @crtc_info: user provided configuration
  * @new_mode: new mode to set
  * @connector_set: set of connectors for the new config
  * @fb: new framebuffer
+ *
  * LOCKING:
  * Caller must hold mode config lock.
+ *
  * Setup a new configuration, provided by the user in @crtc_info, and enable
  * it.
+ *
  * RETURNS:
  * Zero. (FIXME)
  */
 int drm_crtc_helper_set_config(struct drm_mode_set *set)
+{
 	struct drm_device *dev;
 	struct drm_crtc *save_crtcs, *new_crtc, *crtc;
 	struct drm_encoder *save_encoders, *new_encoder, *encoder;
 	struct drm_framebuffer *old_fb = NULL;
 	bool mode_changed = false; /* if true do a full mode set */
 	bool fb_changed = false; /* if true and !mode_changed just do a flip */
 	struct drm_connector *save_connectors, *connector;
 	int count = 0, ro, fail = 0;
 	struct drm_crtc_helper_funcs *crtc_funcs;
 	int ret = 0;
+	int i;
 	DRM_DEBUG_KMS("\n");
 	if (!set)
 		return -EINVAL;
 	if (!set->crtc)
 		return -EINVAL;
 	if (!set->crtc->helper_private)
 		return -EINVAL;
 	crtc_funcs = set->crtc->helper_private;
+	if (!set->mode)
+		set->fb = NULL;
+	if (set->fb) {
-	DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:"
-			" %d (x, y) (%i, %i)\n",
+		DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
-		  set->crtc, set->crtc->base.id, set->fb, set->connectors,
+				set->crtc->base.id, set->fb->base.id,
+		  (int)set->num_connectors, set->x, set->y);
+	} else {
+		DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
+		set->mode = NULL;
+		set->num_connectors = 0;
 		  (int)set->num_connectors, set->x, set->y);
 	dev = set->crtc->dev;
 	/* Allocate space for the backup of all (non-pointer) crtc, encoder and
 	 * connector data. */
 	save_crtcs = kzalloc(dev->mode_config.num_crtc *
 			     sizeof(struct drm_crtc), GFP_KERNEL);
 	if (!save_crtcs)
 		return -ENOMEM;
 	save_encoders = kzalloc(dev->mode_config.num_encoder *
 				sizeof(struct drm_encoder), GFP_KERNEL);
 	if (!save_encoders) {
 		kfree(save_crtcs);
 		return -ENOMEM;
+	}
 	save_connectors = kzalloc(dev->mode_config.num_connector *
 				sizeof(struct drm_connector), GFP_KERNEL);
 	if (!save_connectors) {
 		kfree(save_crtcs);
 		kfree(save_encoders);
 		return -ENOMEM;
+	}
 	/* Copy data. Note that driver private data is not affected.
 	 * Should anything bad happen only the expected state is
 	 * restored, not the drivers personal bookkeeping.
 	 */
 	count = 0;
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		save_crtcs[count++] = *crtc;
+	}
 	count = 0;
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		save_encoders[count++] = *encoder;
+	}
 	count = 0;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		save_connectors[count++] = *connector;
+	}
 	/* We should be able to check here if the fb has the same properties
 	 * and then just flip_or_move it */
 	if (set->crtc->fb != set->fb) {
 		/* If we have no fb then treat it as a full mode set */
 		if (set->crtc->fb == NULL) {
 			DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
 			mode_changed = true;
 		} else if (set->fb == NULL) {
 			mode_changed = true;
 		} else
 			fb_changed = true;
+	}
 	if (set->x != set->crtc->x || set->y != set->crtc->y)
 		fb_changed = true;
 	if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
 		DRM_DEBUG_KMS("modes are different, full mode set\n");
 		drm_mode_debug_printmodeline(&set->crtc->mode);
 		drm_mode_debug_printmodeline(set->mode);
 		mode_changed = true;
+	}
 	/* a) traverse passed in connector list and get encoders for them */
 	count = 0;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		struct drm_connector_helper_funcs *connector_funcs =
 			connector->helper_private;
 		new_encoder = connector->encoder;
 		for (ro = 0; ro < set->num_connectors; ro++) {
 			if (set->connectors[ro] == connector) {
 				new_encoder = connector_funcs->best_encoder(connector);
 				/* if we can't get an encoder for a connector
 				   we are setting now - then fail */
 				if (new_encoder == NULL)
 					/* don't break so fail path works correct */
 					fail = 1;
 				break;
+			}
+		}
 		if (new_encoder != connector->encoder) {
 			DRM_DEBUG_KMS("encoder changed, full mode switch\n");
 			mode_changed = true;
 			/* If the encoder is reused for another connector, then
 			 * the appropriate crtc will be set later.
 			 */
 			if (connector->encoder)
 				connector->encoder->crtc = NULL;
 			connector->encoder = new_encoder;
+		}
+	}
 	if (fail) {
 		ret = -EINVAL;
 		goto fail;
+	}
 	count = 0;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		if (!connector->encoder)
 			continue;
 		if (connector->encoder->crtc == set->crtc)
 			new_crtc = NULL;
 		else
 			new_crtc = connector->encoder->crtc;
 		for (ro = 0; ro < set->num_connectors; ro++) {
 			if (set->connectors[ro] == connector)
 				new_crtc = set->crtc;
+		}
 		/* Make sure the new CRTC will work with the encoder */
 		if (new_crtc &&
 		    !drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
 			ret = -EINVAL;
 			goto fail;
+		}
 		if (new_crtc != connector->encoder->crtc) {
 			DRM_DEBUG_KMS("crtc changed, full mode switch\n");
 			mode_changed = true;
 			connector->encoder->crtc = new_crtc;
+		}
+		if (new_crtc) {
-		DRM_DEBUG_KMS("setting connector %d crtc to %p\n",
+			DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
+				connector->base.id, drm_get_connector_name(connector),
+				new_crtc->base.id);
+		} else {
+			DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
-			  connector->base.id, new_crtc);
+				connector->base.id, drm_get_connector_name(connector));
+		}
+	}
 	/* mode_set_base is not a required function */
 	if (fb_changed && !crtc_funcs->mode_set_base)
 		mode_changed = true;
 	if (mode_changed) {
-		old_fb = set->crtc->fb;
-		set->crtc->fb = set->fb;
-		set->crtc->enabled = (set->mode != NULL);
+		set->crtc->enabled = drm_helper_crtc_in_use(set->crtc);
-		if (set->mode != NULL) {
+		if (set->crtc->enabled) {
 			DRM_DEBUG_KMS("attempting to set mode from"
 					" userspace\n");
 			drm_mode_debug_printmodeline(set->mode);
+			old_fb = set->crtc->fb;
+			set->crtc->fb = set->fb;
 			if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
 						      set->x, set->y,
 						      old_fb)) {
-				DRM_ERROR("failed to set mode on crtc %p\n",
+				DRM_ERROR("failed to set mode on [CRTC:%d]\n",
-					  set->crtc);
+					  set->crtc->base.id);
+				set->crtc->fb = old_fb;
 				ret = -EINVAL;
 				goto fail;
+			}
-			/* TODO are these needed? */
+			DRM_DEBUG_KMS("Setting connector DPMS state to on\n");
-			set->crtc->desired_x = set->x;
+			for (i = 0; i < set->num_connectors; i++) {
+				DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id,
-			set->crtc->desired_y = set->y;
+					      drm_get_connector_name(set->connectors[i]));
-			set->crtc->desired_mode = set->mode;
+				set->connectors[i]->dpms = DRM_MODE_DPMS_ON;
+			}
+		}
 		drm_helper_disable_unused_functions(dev);
 	} else if (fb_changed) {
 		set->crtc->x = set->x;
 		set->crtc->y = set->y;
 		old_fb = set->crtc->fb;
 		if (set->crtc->fb != set->fb)
 			set->crtc->fb = set->fb;
 		ret = crtc_funcs->mode_set_base(set->crtc,
 						set->x, set->y, old_fb);
-		if (ret != 0)
+		if (ret != 0) {
+			set->crtc->fb = old_fb;
 			goto fail;
+	}
+	}
 	kfree(save_connectors);
 	kfree(save_encoders);
 	kfree(save_crtcs);
 	return 0;
 fail:
 	/* Restore all previous data. */
 	count = 0;
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 		*crtc = save_crtcs[count++];
+	}
 	count = 0;
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		*encoder = save_encoders[count++];
+	}
 	count = 0;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 		*connector = save_connectors[count++];
+	}
 	kfree(save_connectors);
 	kfree(save_encoders);
 	kfree(save_crtcs);
 	return ret;
+}
 EXPORT_SYMBOL(drm_crtc_helper_set_config);
-bool drm_helper_plugged_event(struct drm_device *dev)
-{
-	DRM_DEBUG_KMS("\n");
-	drm_helper_probe_connector_modes(dev, dev->mode_config.max_width,
-					 dev->mode_config.max_height);
-	drm_setup_crtcs(dev);
-	/* alert the driver fb layer */
-    dev->mode_config.funcs->fb_changed(dev);
-	/* FIXME: send hotplug event */
-	return true;
-}
-/**
- * drm_initial_config - setup a sane initial connector configuration
- * @dev: DRM device
- *
- * LOCKING:
- * Called at init time, must take mode config lock.
- *
- * Scan the CRTCs and connectors and try to put together an initial setup.
- * At the moment, this is a cloned configuration across all heads with
- * a new framebuffer object as the backing store.
- *
- * RETURNS:
- * Zero if everything went ok, nonzero otherwise.
- */
-bool drm_helper_initial_config(struct drm_device *dev)
-{
-	int count = 0;
-	/* disable all the possible outputs/crtcs before entering KMS mode */
-//	drm_helper_disable_unused_functions(dev);
-//   drm_fb_helper_parse_command_line(dev);
-	count = drm_helper_probe_connector_modes(dev,
-						 dev->mode_config.max_width,
-						 dev->mode_config.max_height);
-	/*
-	 * we shouldn't end up with no modes here.
-	 */
-	if (count == 0)
-		printk(KERN_INFO "No connectors reported connected with modes\n");
-	drm_setup_crtcs(dev);
-   /* alert the driver fb layer */
-    dev->mode_config.funcs->fb_changed(dev);
-	return 0;
-}
-EXPORT_SYMBOL(drm_helper_initial_config);
 static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
+{
 	int dpms = DRM_MODE_DPMS_OFF;
 	struct drm_connector *connector;
 	struct drm_device *dev = encoder->dev;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 		if (connector->encoder == encoder)
 			if (connector->dpms < dpms)
 				dpms = connector->dpms;
 	return dpms;
+}
 static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
+{
 	int dpms = DRM_MODE_DPMS_OFF;
 	struct drm_connector *connector;
 	struct drm_device *dev = crtc->dev;
 	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 		if (connector->encoder && connector->encoder->crtc == crtc)
 			if (connector->dpms < dpms)
 				dpms = connector->dpms;
 	return dpms;
+}
 /**
  * drm_helper_connector_dpms
  * @connector affected connector
  * @mode DPMS mode
+ *
  * Calls the low-level connector DPMS function, then
  * calls appropriate encoder and crtc DPMS functions as well
  */
 void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
+{
 	struct drm_encoder *encoder = connector->encoder;
 	struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
 	int old_dpms;
 	if (mode == connector->dpms)
 		return;
 	old_dpms = connector->dpms;
 	connector->dpms = mode;
 	/* from off to on, do crtc then encoder */
 	if (mode < old_dpms) {
 		if (crtc) {
 			struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
 			if (crtc_funcs->dpms)
 				(*crtc_funcs->dpms) (crtc,
 						     drm_helper_choose_crtc_dpms(crtc));
+		}
 		if (encoder) {
 			struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
 			if (encoder_funcs->dpms)
 				(*encoder_funcs->dpms) (encoder,
 							drm_helper_choose_encoder_dpms(encoder));
+		}
+	}
 	/* from on to off, do encoder then crtc */
 	if (mode > old_dpms) {
 		if (encoder) {
 			struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
 			if (encoder_funcs->dpms)
 				(*encoder_funcs->dpms) (encoder,
 							drm_helper_choose_encoder_dpms(encoder));
+		}
 		if (crtc) {
 			struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
 			if (crtc_funcs->dpms)
 				(*crtc_funcs->dpms) (crtc,
 						     drm_helper_choose_crtc_dpms(crtc));
+		}
+	}
 	return;
+}
 EXPORT_SYMBOL(drm_helper_connector_dpms);
-/**
- * drm_hotplug_stage_two
- * @dev DRM device
- * @connector hotpluged connector
- *
- * LOCKING.
- * Caller must hold mode config lock, function might grab struct lock.
- *
- * Stage two of a hotplug.
- *
- * RETURNS:
- * Zero on success, errno on failure.
- */
-int drm_helper_hotplug_stage_two(struct drm_device *dev)
-{
-	drm_helper_plugged_event(dev);
-	return 0;
-}
-EXPORT_SYMBOL(drm_helper_hotplug_stage_two);
 int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
 				   struct drm_mode_fb_cmd *mode_cmd)
+{
 	fb->width = mode_cmd->width;
 	fb->height = mode_cmd->height;
 	fb->pitch = mode_cmd->pitch;
 	fb->bits_per_pixel = mode_cmd->bpp;
 	fb->depth = mode_cmd->depth;
 	return 0;
+}
 EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct);
 int drm_helper_resume_force_mode(struct drm_device *dev)
+{
 	struct drm_crtc *crtc;
 	struct drm_encoder *encoder;
 	struct drm_encoder_helper_funcs *encoder_funcs;
 	struct drm_crtc_helper_funcs *crtc_funcs;
 	int ret;
 	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
        if (!crtc->enabled)
            continue;
 		ret = drm_crtc_helper_set_mode(crtc, &crtc->mode,
 					       crtc->x, crtc->y, crtc->fb);
 		if (ret == false)
 			DRM_ERROR("failed to set mode on crtc %p\n", crtc);
 		/* Turn off outputs that were already powered off */
 		if (drm_helper_choose_crtc_dpms(crtc)) {
 			list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 				if(encoder->crtc != crtc)
 					continue;
 				encoder_funcs = encoder->helper_private;
 				if (encoder_funcs->dpms)
 					(*encoder_funcs->dpms) (encoder,
 								drm_helper_choose_encoder_dpms(encoder));
+			}
 				crtc_funcs = crtc->helper_private;
 				if (crtc_funcs->dpms)
 					(*crtc_funcs->dpms) (crtc,
 							     drm_helper_choose_crtc_dpms(crtc));
+			}
+		}
-	}
 	/* disable the unused connectors while restoring the modesetting */
 	drm_helper_disable_unused_functions(dev);
 	return 0;
+}
 EXPORT_SYMBOL(drm_helper_resume_force_mode);
+#if 0
+#define DRM_OUTPUT_POLL_PERIOD (10*HZ)
+static void output_poll_execute(struct work_struct *work)
+{
+	struct delayed_work *delayed_work = to_delayed_work(work);
+	struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work);
+	struct drm_connector *connector;
+	enum drm_connector_status old_status;
+	bool repoll = false, changed = false;
+	if (!drm_kms_helper_poll)
+		return;
+	mutex_lock(&dev->mode_config.mutex);
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		/* if this is HPD or polled don't check it -
+		   TV out for instance */
+		if (!connector->polled)
+			continue;
+		else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT))
+			repoll = true;
+		old_status = connector->status;
+		/* if we are connected and don't want to poll for disconnect
+		   skip it */
+		if (old_status == connector_status_connected &&
+		    !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) &&
+		    !(connector->polled & DRM_CONNECTOR_POLL_HPD))
+			continue;
+		connector->status = connector->funcs->detect(connector, false);
+		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n",
+			      connector->base.id,
+			      drm_get_connector_name(connector),
+			      old_status, connector->status);
+		if (old_status != connector->status)
+			changed = true;
+	}
+	mutex_unlock(&dev->mode_config.mutex);
+	if (changed) {
+		/* send a uevent + call fbdev */
+		drm_sysfs_hotplug_event(dev);
+		if (dev->mode_config.funcs->output_poll_changed)
+			dev->mode_config.funcs->output_poll_changed(dev);
+	}
+	if (repoll)
+		queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD);
+}
+void drm_kms_helper_poll_disable(struct drm_device *dev)
+{
+	if (!dev->mode_config.poll_enabled)
+		return;
+	cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
+}
+EXPORT_SYMBOL(drm_kms_helper_poll_disable);
+void drm_kms_helper_poll_enable(struct drm_device *dev)
+{
+	bool poll = false;
+	struct drm_connector *connector;
+	if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll)
+		return;
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		if (connector->polled)
+			poll = true;
+	}
+	if (poll)
+		queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD);
+}
+EXPORT_SYMBOL(drm_kms_helper_poll_enable);
+void drm_kms_helper_poll_init(struct drm_device *dev)
+{
+	INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute);
+	dev->mode_config.poll_enabled = true;
+	drm_kms_helper_poll_enable(dev);
+}
+EXPORT_SYMBOL(drm_kms_helper_poll_init);
+void drm_kms_helper_poll_fini(struct drm_device *dev)
+{
+	drm_kms_helper_poll_disable(dev);
+}
+EXPORT_SYMBOL(drm_kms_helper_poll_fini);
+void drm_helper_hpd_irq_event(struct drm_device *dev)
+{
+	if (!dev->mode_config.poll_enabled)
+		return;
+	/* kill timer and schedule immediate execution, this doesn't block */
+	cancel_delayed_work(&dev->mode_config.output_poll_work);
+	if (drm_kms_helper_poll)
+	queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0);
+}
+EXPORT_SYMBOL(drm_helper_hpd_irq_event);
+#endif

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/drm_crtc_helper.c – Rev 1430 → 1963