WebSVN – Kolibri OS – Diff – /drivers/video/drm/i915/intel_fbdev.c


﻿/*
 * Copyright © 2007 David Airlie
 *
 * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
 *
 * Authors:
 *     David Airlie
 */
 
#include 
#include 
#include 
#include 
#include 
#include 
//#include 
#include 
#include 
#include 
#include 
//#include 
 
#include 
#include 
#include 
#include "intel_drv.h"
#include 
#include "i915_drv.h"
 
static int intel_fbdev_set_par(struct fb_info *info)
{
	struct drm_fb_helper *fb_helper = info->par;
	struct intel_fbdev *ifbdev =
		container_of(fb_helper, struct intel_fbdev, helper);
	int ret;
 
	ret = drm_fb_helper_set_par(info);
 
	if (ret == 0) {
		mutex_lock(&fb_helper->dev->struct_mutex);
		intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
		mutex_unlock(&fb_helper->dev->struct_mutex);
	}
 
	return ret;
}
 
static int intel_fbdev_blank(int blank, struct fb_info *info)
{
	struct drm_fb_helper *fb_helper = info->par;
	struct intel_fbdev *ifbdev =
		container_of(fb_helper, struct intel_fbdev, helper);
	int ret;
 
	ret = drm_fb_helper_blank(blank, info);
 
	if (ret == 0) {
		mutex_lock(&fb_helper->dev->struct_mutex);
		intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
		mutex_unlock(&fb_helper->dev->struct_mutex);
	}
 
	return ret;
}
 
static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
				   struct fb_info *info)
{
	struct drm_fb_helper *fb_helper = info->par;
	struct intel_fbdev *ifbdev =
		container_of(fb_helper, struct intel_fbdev, helper);
 
	int ret;
	ret = drm_fb_helper_pan_display(var, info);
 
	if (ret == 0) {
		mutex_lock(&fb_helper->dev->struct_mutex);
		intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
		mutex_unlock(&fb_helper->dev->struct_mutex);
	}
 
	return ret;
}
 
static struct fb_ops intelfb_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = intel_fbdev_set_par,
//   .fb_fillrect = cfb_fillrect,
//   .fb_copyarea = cfb_copyarea,
//   .fb_imageblit = cfb_imageblit,
	.fb_pan_display = intel_fbdev_pan_display,
	.fb_blank = intel_fbdev_blank,
//   .fb_setcmap = drm_fb_helper_setcmap,
//   .fb_debug_enter = drm_fb_helper_debug_enter,
//   .fb_debug_leave = drm_fb_helper_debug_leave,
};
 
static int intelfb_alloc(struct drm_fb_helper *helper,
			 struct drm_fb_helper_surface_size *sizes)
{
	struct intel_fbdev *ifbdev =
		container_of(helper, struct intel_fbdev, helper);
	struct drm_framebuffer *fb = NULL;
	struct drm_device *dev = helper->dev;
	struct drm_i915_private *dev_priv = to_i915(dev);
	struct drm_mode_fb_cmd2 mode_cmd = {};
	struct drm_i915_gem_object *obj = NULL;
	int size, ret;
 
	/* we don't do packed 24bpp */
	if (sizes->surface_bpp == 24)
		sizes->surface_bpp = 32;
 
	mode_cmd.width = sizes->surface_width;
	mode_cmd.height = sizes->surface_height;
 
	mode_cmd.pitches[0] = ALIGN(mode_cmd.width *
				    DIV_ROUND_UP(sizes->surface_bpp, 8), 64);
	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
							  sizes->surface_depth);
 
	mutex_lock(&dev->struct_mutex);
 
	size = mode_cmd.pitches[0] * mode_cmd.height;
	size = PAGE_ALIGN(size);
 
	/* If the FB is too big, just don't use it since fbdev is not very
	 * important and we should probably use that space with FBC or other
	 * features. */
	if (size * 2 < dev_priv->gtt.stolen_usable_size)
		obj = i915_gem_object_create_stolen(dev, size);
	if (obj == NULL)
		obj = i915_gem_alloc_object(dev, size);
	if (!obj) {
		DRM_ERROR("failed to allocate framebuffer\n");
		ret = -ENOMEM;
		goto out;
	}
 
	fb = __intel_framebuffer_create(dev, &mode_cmd, obj);
	if (IS_ERR(fb)) {
		drm_gem_object_unreference(&obj->base);
		ret = PTR_ERR(fb);
		goto out;
	}
 
 
 
 
 
 
	mutex_unlock(&dev->struct_mutex);
 
	ifbdev->fb = to_intel_framebuffer(fb);
 
	return 0;
 
 
 
 
 
out:
	mutex_unlock(&dev->struct_mutex);
	if (!IS_ERR_OR_NULL(fb))
		drm_framebuffer_unreference(fb);
	return ret;
}
 
static int intelfb_create(struct drm_fb_helper *helper,
			  struct drm_fb_helper_surface_size *sizes)
{
	struct intel_fbdev *ifbdev =
		container_of(helper, struct intel_fbdev, helper);
	struct intel_framebuffer *intel_fb = ifbdev->fb;
	struct drm_device *dev = helper->dev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	struct fb_info *info;
	struct drm_framebuffer *fb;
	struct drm_i915_gem_object *obj;
	int size, ret;
	bool prealloc = false;
 
 
 
	if (intel_fb &&
	    (sizes->fb_width > intel_fb->base.width ||
	     sizes->fb_height > intel_fb->base.height)) {
		DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
			      " releasing it\n",
			      intel_fb->base.width, intel_fb->base.height,
			      sizes->fb_width, sizes->fb_height);
		drm_framebuffer_unreference(&intel_fb->base);
		intel_fb = ifbdev->fb = NULL;
	}
	if (!intel_fb || WARN_ON(!intel_fb->obj)) {
		DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
		ret = intelfb_alloc(helper, sizes);
		if (ret)
			return ret;
		intel_fb = ifbdev->fb;
	} else {
		DRM_DEBUG_KMS("re-using BIOS fb\n");
		prealloc = true;
		sizes->fb_width = intel_fb->base.width;
		sizes->fb_height = intel_fb->base.height;
	}
 
	obj = intel_fb->obj;
	size = obj->base.size;
 
	mutex_lock(&dev->struct_mutex);
 
	/* Pin the GGTT vma for our access via info->screen_base.
	 * This also validates that any existing fb inherited from the
	 * BIOS is suitable for own access.
	 */
	ret = intel_pin_and_fence_fb_obj(NULL, &ifbdev->fb->base, NULL);
	if (ret)
		goto out_unlock;
 
	info = drm_fb_helper_alloc_fbi(helper);
	if (IS_ERR(info)) {
		DRM_ERROR("Failed to allocate fb_info\n");
		ret = PTR_ERR(info);
		goto out_unpin;
	}
 
	info->par = helper;
 
	fb = &ifbdev->fb->base;
 
	ifbdev->helper.fb = fb;
 
	strcpy(info->fix.id, "inteldrmfb");
 
	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
	info->fbops = &intelfb_ops;
 
	/* setup aperture base/size for vesafb takeover */
	info->apertures->ranges[0].base = dev->mode_config.fb_base;
	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;
 
	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);
	info->fix.smem_len = size;
 
	info->screen_base = (void*) 0xFE000000;
	info->screen_size = size;
 
	/* This driver doesn't need a VT switch to restore the mode on resume */
	info->skip_vt_switch = true;
 
	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
 
	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
 
	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n",
		      fb->width, fb->height,
		      i915_gem_obj_ggtt_offset(obj), obj);
 
	mutex_unlock(&dev->struct_mutex);
	return 0;
 
out_destroy_fbi:
	drm_fb_helper_release_fbi(helper);
out_unpin:
	i915_gem_object_ggtt_unpin(obj);
 
out_unlock:
	mutex_unlock(&dev->struct_mutex);
	return ret;
}
 
/** Sets the color ramps on behalf of RandR */
static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
				    u16 blue, int regno)
{
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
	intel_crtc->lut_r[regno] = red >> 8;
	intel_crtc->lut_g[regno] = green >> 8;
	intel_crtc->lut_b[regno] = blue >> 8;
}
 
static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
				    u16 *blue, int regno)
{
	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
 
	*red = intel_crtc->lut_r[regno] << 8;
	*green = intel_crtc->lut_g[regno] << 8;
	*blue = intel_crtc->lut_b[regno] << 8;
}
 
static struct drm_fb_helper_crtc *
intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc)
{
	int i;
 
	for (i = 0; i < fb_helper->crtc_count; i++)
		if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
			return &fb_helper->crtc_info[i];
 
	return NULL;
}
 
/*
 * Try to read the BIOS display configuration and use it for the initial
 * fb configuration.
 *
 * The BIOS or boot loader will generally create an initial display
 * configuration for us that includes some set of active pipes and displays.
 * This routine tries to figure out which pipes and connectors are active
 * and stuffs them into the crtcs and modes array given to us by the
 * drm_fb_helper code.
 *
 * The overall sequence is:
 *   intel_fbdev_init - from driver load
 *     intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
 *     drm_fb_helper_init - build fb helper structs
 *     drm_fb_helper_single_add_all_connectors - more fb helper structs
 *   intel_fbdev_initial_config - apply the config
 *     drm_fb_helper_initial_config - call ->probe then register_framebuffer()
 *         drm_setup_crtcs - build crtc config for fbdev
 *           intel_fb_initial_config - find active connectors etc
 *         drm_fb_helper_single_fb_probe - set up fbdev
 *           intelfb_create - re-use or alloc fb, build out fbdev structs
 *
 * Note that we don't make special consideration whether we could actually
 * switch to the selected modes without a full modeset. E.g. when the display
 * is in VGA mode we need to recalculate watermarks and set a new high-res
 * framebuffer anyway.
 */
static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
				    struct drm_fb_helper_crtc **crtcs,
				    struct drm_display_mode **modes,
				    struct drm_fb_offset *offsets,
				    bool *enabled, int width, int height)
{
	struct drm_device *dev = fb_helper->dev;
	int i, j;
	bool *save_enabled;
	bool fallback = true;
	int num_connectors_enabled = 0;
	int num_connectors_detected = 0;
	uint64_t conn_configured = 0, mask;
	int pass = 0;
 
	save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool),
			       GFP_KERNEL);
	if (!save_enabled)
		return false;
 
	memcpy(save_enabled, enabled, fb_helper->connector_count);
	mask = (1 << fb_helper->connector_count) - 1;
retry:
	for (i = 0; i < fb_helper->connector_count; i++) {
		struct drm_fb_helper_connector *fb_conn;
		struct drm_connector *connector;
		struct drm_encoder *encoder;
		struct drm_fb_helper_crtc *new_crtc;
 
		fb_conn = fb_helper->connector_info[i];
		connector = fb_conn->connector;
 
		if (conn_configured & (1 << i))
			continue;
 
		if (pass == 0 && !connector->has_tile)
			continue;
 
		if (connector->status == connector_status_connected)
			num_connectors_detected++;
 
		if (!enabled[i]) {
			DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
				      connector->name);
			conn_configured |= (1 << i);
			continue;
		}
 
		if (connector->force == DRM_FORCE_OFF) {
			DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
				      connector->name);
			enabled[i] = false;
			continue;
		}
 
		encoder = connector->encoder;
		if (!encoder || WARN_ON(!encoder->crtc)) {
			if (connector->force > DRM_FORCE_OFF)
				goto bail;
 
			DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
				      connector->name);
			enabled[i] = false;
			conn_configured |= (1 << i);
			continue;
		}
 
		num_connectors_enabled++;
 
		new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);
 
		/*
		 * Make sure we're not trying to drive multiple connectors
		 * with a single CRTC, since our cloning support may not
		 * match the BIOS.
		 */
		for (j = 0; j < fb_helper->connector_count; j++) {
			if (crtcs[j] == new_crtc) {
				DRM_DEBUG_KMS("fallback: cloned configuration\n");
				goto bail;
			}
		}
 
		DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
			      connector->name);
 
		/* go for command line mode first */
		modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);
 
		/* try for preferred next */
		if (!modes[i]) {
			DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
				      connector->name, connector->has_tile);
			modes[i] = drm_has_preferred_mode(fb_conn, width,
							  height);
		}
 
		/* No preferred mode marked by the EDID? Are there any modes? */
		if (!modes[i] && !list_empty(&connector->modes)) {
			DRM_DEBUG_KMS("using first mode listed on connector %s\n",
				      connector->name);
			modes[i] = list_first_entry(&connector->modes,
						    struct drm_display_mode,
						    head);
		}
 
		/* last resort: use current mode */
		if (!modes[i]) {
			/*
			 * IMPORTANT: We want to use the adjusted mode (i.e.
			 * after the panel fitter upscaling) as the initial
			 * config, not the input mode, which is what crtc->mode
			 * usually contains. But since our current
			 * code puts a mode derived from the post-pfit timings
			 * into crtc->mode this works out correctly.
			 */
			DRM_DEBUG_KMS("looking for current mode on connector %s\n",
				      connector->name);
			modes[i] = &encoder->crtc->mode;
		}
		crtcs[i] = new_crtc;
 
		DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",
			      connector->name,
			      pipe_name(to_intel_crtc(encoder->crtc)->pipe),
			      encoder->crtc->base.id,
			      modes[i]->hdisplay, modes[i]->vdisplay,
			      modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");
 
		fallback = false;
		conn_configured |= (1 << i);
	}
 
	if ((conn_configured & mask) != mask) {
		pass++;
		goto retry;
	}
 
	/*
	 * If the BIOS didn't enable everything it could, fall back to have the
	 * same user experiencing of lighting up as much as possible like the
	 * fbdev helper library.
	 */
	if (num_connectors_enabled != num_connectors_detected &&
	    num_connectors_enabled < INTEL_INFO(dev)->num_pipes) {
		DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
		DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
			      num_connectors_detected);
		fallback = true;
	}
 
	if (fallback) {
bail:
		DRM_DEBUG_KMS("Not using firmware configuration\n");
		memcpy(enabled, save_enabled, fb_helper->connector_count);
		kfree(save_enabled);
		return false;
	}
 
	kfree(save_enabled);
	return true;
}
 
static const struct drm_fb_helper_funcs intel_fb_helper_funcs = {
	.initial_config = intel_fb_initial_config,
	.gamma_set = intel_crtc_fb_gamma_set,
	.gamma_get = intel_crtc_fb_gamma_get,
	.fb_probe = intelfb_create,
};
 
static void intel_fbdev_destroy(struct drm_device *dev,
				struct intel_fbdev *ifbdev)
{
	/* We rely on the object-free to release the VMA pinning for
	 * the info->screen_base mmaping. Leaking the VMA is simpler than
	 * trying to rectify all the possible error paths leading here.
	 */
 
	drm_fb_helper_unregister_fbi(&ifbdev->helper);
	drm_fb_helper_release_fbi(&ifbdev->helper);
 
	drm_fb_helper_fini(&ifbdev->helper);
 
	if (ifbdev->fb) {
	drm_framebuffer_unregister_private(&ifbdev->fb->base);
	drm_framebuffer_remove(&ifbdev->fb->base);
}
}
 
/*
 * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible.
 * The core display code will have read out the current plane configuration,
 * so we use that to figure out if there's an object for us to use as the
 * fb, and if so, we re-use it for the fbdev configuration.
 *
 * Note we only support a single fb shared across pipes for boot (mostly for
 * fbcon), so we just find the biggest and use that.
 */
static bool intel_fbdev_init_bios(struct drm_device *dev,
				 struct intel_fbdev *ifbdev)
{
	struct intel_framebuffer *fb = NULL;
	struct drm_crtc *crtc;
	struct intel_crtc *intel_crtc;
	unsigned int max_size = 0;
 
	/* Find the largest fb */
	for_each_crtc(dev, crtc) {
		struct drm_i915_gem_object *obj =
			intel_fb_obj(crtc->primary->state->fb);
		intel_crtc = to_intel_crtc(crtc);
 
		if (!crtc->state->active || !obj) {
			DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n",
				      pipe_name(intel_crtc->pipe));
			continue;
		}
 
		if (obj->base.size > max_size) {
			DRM_DEBUG_KMS("found possible fb from plane %c\n",
				      pipe_name(intel_crtc->pipe));
			fb = to_intel_framebuffer(crtc->primary->state->fb);
			max_size = obj->base.size;
		}
	}
 
	if (!fb) {
		DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n");
		goto out;
	}
 
	/* Now make sure all the pipes will fit into it */
	for_each_crtc(dev, crtc) {
		unsigned int cur_size;
 
		intel_crtc = to_intel_crtc(crtc);
 
		if (!crtc->state->active) {
			DRM_DEBUG_KMS("pipe %c not active, skipping\n",
				      pipe_name(intel_crtc->pipe));
			continue;
		}
 
		DRM_DEBUG_KMS("checking plane %c for BIOS fb\n",
			      pipe_name(intel_crtc->pipe));
 
		/*
		 * See if the plane fb we found above will fit on this
		 * pipe.  Note we need to use the selected fb's pitch and bpp
		 * rather than the current pipe's, since they differ.
		 */
		cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay;
		cur_size = cur_size * fb->base.bits_per_pixel / 8;
		if (fb->base.pitches[0] < cur_size) {
			DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n",
				      pipe_name(intel_crtc->pipe),
				      cur_size, fb->base.pitches[0]);
			fb = NULL;
			break;
		}
 
		cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay;
		cur_size = intel_fb_align_height(dev, cur_size,
						 fb->base.pixel_format,
						 fb->base.modifier[0]);
		cur_size *= fb->base.pitches[0];
		DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n",
			      pipe_name(intel_crtc->pipe),
			      intel_crtc->config->base.adjusted_mode.crtc_hdisplay,
			      intel_crtc->config->base.adjusted_mode.crtc_vdisplay,
			      fb->base.bits_per_pixel,
			      cur_size);
 
		if (cur_size > max_size) {
			DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n",
				      pipe_name(intel_crtc->pipe),
				      cur_size, max_size);
			fb = NULL;
			break;
		}
 
		DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n",
			      pipe_name(intel_crtc->pipe),
			      max_size, cur_size);
	}
 
	if (!fb) {
		DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n");
		goto out;
	}
 
	ifbdev->preferred_bpp = fb->base.bits_per_pixel;
	ifbdev->fb = fb;
 
	drm_framebuffer_reference(&ifbdev->fb->base);
 
	/* Final pass to check if any active pipes don't have fbs */
	for_each_crtc(dev, crtc) {
		intel_crtc = to_intel_crtc(crtc);
 
		if (!crtc->state->active)
			continue;
 
		WARN(!crtc->primary->fb,
		     "re-used BIOS config but lost an fb on crtc %d\n",
		     crtc->base.id);
	}
 
 
	DRM_DEBUG_KMS("using BIOS fb for initial console\n");
	return true;
 
out:
 
	return false;
}
 
int intel_fbdev_init(struct drm_device *dev)
{
	struct intel_fbdev *ifbdev;
	struct drm_i915_private *dev_priv = dev->dev_private;
	int ret;
 
	if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0))
		return -ENODEV;
 
	ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
	if (ifbdev == NULL)
		return -ENOMEM;
 
	drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs);
 
	if (!intel_fbdev_init_bios(dev, ifbdev))
		ifbdev->preferred_bpp = 32;
 
	ret = drm_fb_helper_init(dev, &ifbdev->helper,
				 INTEL_INFO(dev)->num_pipes, 4);
	if (ret) {
		kfree(ifbdev);
		return ret;
	}
 
	ifbdev->helper.atomic = true;
 
	dev_priv->fbdev = ifbdev;
	drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
 
	return 0;
}
 
void intel_fbdev_initial_config(void *data, async_cookie_t cookie)
{
	struct drm_i915_private *dev_priv = data;
	struct intel_fbdev *ifbdev = dev_priv->fbdev;
 
	/* Due to peculiar init order wrt to hpd handling this is separate. */
	drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp);
}
 
 
void intel_fbdev_output_poll_changed(struct drm_device *dev)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	if (dev_priv->fbdev)
		drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
}

Rev 6660	Rev 6937
1	/*	1	/*
2	* Copyright © 2007 David Airlie	2	* Copyright © 2007 David Airlie
3	*	3	*
4	* Permission is hereby granted, free of charge, to any person obtaining a	4	* Permission is hereby granted, free of charge, to any person obtaining a
5	* copy of this software and associated documentation files (the "Software"),	5	* copy of this software and associated documentation files (the "Software"),
6	* to deal in the Software without restriction, including without limitation	6	* to deal in the Software without restriction, including without limitation
7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
8	* and/or sell copies of the Software, and to permit persons to whom the	8	* and/or sell copies of the Software, and to permit persons to whom the
9	* Software is furnished to do so, subject to the following conditions:	9	* Software is furnished to do so, subject to the following conditions:
10	*	10	*
11	* The above copyright notice and this permission notice (including the next	11	* The above copyright notice and this permission notice (including the next
12	* paragraph) shall be included in all copies or substantial portions of the	12	* paragraph) shall be included in all copies or substantial portions of the
13	* Software.	13	* Software.
14	*	14	*
15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21	* DEALINGS IN THE SOFTWARE.	21	* DEALINGS IN THE SOFTWARE.
22	*	22	*
23	* Authors:	23	* Authors:
24	* David Airlie	24	* David Airlie
25	*/	25	*/
26		26
27	#include	27	#include
28	#include	28	#include
29	#include	29	#include
30	#include	30	#include
31	#include	31	#include
32	#include	32	#include
33	//#include	33	//#include
34	#include	34	#include
35	#include	35	#include
36	#include	36	#include
37	#include	37	#include
38	//#include	38	//#include
39		39
40	#include	40	#include
41	#include	41	#include
42	#include	42	#include
43	#include "intel_drv.h"	43	#include "intel_drv.h"
44	#include	44	#include
45	#include "i915_drv.h"	45	#include "i915_drv.h"
46		46
47	static int intel_fbdev_set_par(struct fb_info *info)	47	static int intel_fbdev_set_par(struct fb_info *info)
48	{	48	{
49	struct drm_fb_helper *fb_helper = info->par;	49	struct drm_fb_helper *fb_helper = info->par;
50	struct intel_fbdev *ifbdev =	50	struct intel_fbdev *ifbdev =
51	container_of(fb_helper, struct intel_fbdev, helper);	51	container_of(fb_helper, struct intel_fbdev, helper);
52	int ret;	52	int ret;
53		53
54	ret = drm_fb_helper_set_par(info);	54	ret = drm_fb_helper_set_par(info);
55		55
56	if (ret == 0) {	56	if (ret == 0) {
57	mutex_lock(&fb_helper->dev->struct_mutex);	57	mutex_lock(&fb_helper->dev->struct_mutex);
58	intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);	58	intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
59	mutex_unlock(&fb_helper->dev->struct_mutex);	59	mutex_unlock(&fb_helper->dev->struct_mutex);
60	}	60	}
61		61
62	return ret;	62	return ret;
63	}	63	}
64		64
65	static int intel_fbdev_blank(int blank, struct fb_info *info)	65	static int intel_fbdev_blank(int blank, struct fb_info *info)
66	{	66	{
67	struct drm_fb_helper *fb_helper = info->par;	67	struct drm_fb_helper *fb_helper = info->par;
68	struct intel_fbdev *ifbdev =	68	struct intel_fbdev *ifbdev =
69	container_of(fb_helper, struct intel_fbdev, helper);	69	container_of(fb_helper, struct intel_fbdev, helper);
70	int ret;	70	int ret;
71		71
72	ret = drm_fb_helper_blank(blank, info);	72	ret = drm_fb_helper_blank(blank, info);
73		73
74	if (ret == 0) {	74	if (ret == 0) {
75	mutex_lock(&fb_helper->dev->struct_mutex);	75	mutex_lock(&fb_helper->dev->struct_mutex);
76	intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);	76	intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
77	mutex_unlock(&fb_helper->dev->struct_mutex);	77	mutex_unlock(&fb_helper->dev->struct_mutex);
78	}	78	}
79		79
80	return ret;	80	return ret;
81	}	81	}
82		82
83	static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,	83	static int intel_fbdev_pan_display(struct fb_var_screeninfo *var,
84	struct fb_info *info)	84	struct fb_info *info)
85	{	85	{
86	struct drm_fb_helper *fb_helper = info->par;	86	struct drm_fb_helper *fb_helper = info->par;
87	struct intel_fbdev *ifbdev =	87	struct intel_fbdev *ifbdev =
88	container_of(fb_helper, struct intel_fbdev, helper);	88	container_of(fb_helper, struct intel_fbdev, helper);
89		89
90	int ret;	90	int ret;
91	ret = drm_fb_helper_pan_display(var, info);	91	ret = drm_fb_helper_pan_display(var, info);
92		92
93	if (ret == 0) {	93	if (ret == 0) {
94	mutex_lock(&fb_helper->dev->struct_mutex);	94	mutex_lock(&fb_helper->dev->struct_mutex);
95	intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);	95	intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
96	mutex_unlock(&fb_helper->dev->struct_mutex);	96	mutex_unlock(&fb_helper->dev->struct_mutex);
97	}	97	}
98		98
99	return ret;	99	return ret;
100	}	100	}
101		101
102	static struct fb_ops intelfb_ops = {	102	static struct fb_ops intelfb_ops = {
103	.owner = THIS_MODULE,	103	.owner = THIS_MODULE,
104	.fb_check_var = drm_fb_helper_check_var,	104	.fb_check_var = drm_fb_helper_check_var,
105	.fb_set_par = intel_fbdev_set_par,	105	.fb_set_par = intel_fbdev_set_par,
106	// .fb_fillrect = cfb_fillrect,	106	// .fb_fillrect = cfb_fillrect,
107	// .fb_copyarea = cfb_copyarea,	107	// .fb_copyarea = cfb_copyarea,
108	// .fb_imageblit = cfb_imageblit,	108	// .fb_imageblit = cfb_imageblit,
109	.fb_pan_display = intel_fbdev_pan_display,	109	.fb_pan_display = intel_fbdev_pan_display,
110	.fb_blank = intel_fbdev_blank,	110	.fb_blank = intel_fbdev_blank,
111	// .fb_setcmap = drm_fb_helper_setcmap,	111	// .fb_setcmap = drm_fb_helper_setcmap,
112	// .fb_debug_enter = drm_fb_helper_debug_enter,	112	// .fb_debug_enter = drm_fb_helper_debug_enter,
113	// .fb_debug_leave = drm_fb_helper_debug_leave,	113	// .fb_debug_leave = drm_fb_helper_debug_leave,
114	};	114	};
115		115
116	static int intelfb_alloc(struct drm_fb_helper *helper,	116	static int intelfb_alloc(struct drm_fb_helper *helper,
117	struct drm_fb_helper_surface_size *sizes)	117	struct drm_fb_helper_surface_size *sizes)
118	{	118	{
119	struct intel_fbdev *ifbdev =	119	struct intel_fbdev *ifbdev =
120	container_of(helper, struct intel_fbdev, helper);	120	container_of(helper, struct intel_fbdev, helper);
121	struct drm_framebuffer *fb;	121	struct drm_framebuffer *fb = NULL;
122	struct drm_device *dev = helper->dev;	122	struct drm_device *dev = helper->dev;
123	struct drm_i915_private *dev_priv = to_i915(dev);	123	struct drm_i915_private *dev_priv = to_i915(dev);
124	struct drm_mode_fb_cmd2 mode_cmd = {};	124	struct drm_mode_fb_cmd2 mode_cmd = {};
125	struct drm_i915_gem_object *obj = NULL;	125	struct drm_i915_gem_object *obj = NULL;
126	int size, ret;	126	int size, ret;
127		127
128	/* we don't do packed 24bpp */	128	/* we don't do packed 24bpp */
129	if (sizes->surface_bpp == 24)	129	if (sizes->surface_bpp == 24)
130	sizes->surface_bpp = 32;	130	sizes->surface_bpp = 32;
131		131
132	mode_cmd.width = sizes->surface_width;	132	mode_cmd.width = sizes->surface_width;
133	mode_cmd.height = sizes->surface_height;	133	mode_cmd.height = sizes->surface_height;
134		134
135	mode_cmd.pitches[0] = ALIGN(mode_cmd.width *	135	mode_cmd.pitches[0] = ALIGN(mode_cmd.width *
136	DIV_ROUND_UP(sizes->surface_bpp, 8), 64);	136	DIV_ROUND_UP(sizes->surface_bpp, 8), 64);
137	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,	137	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
138	sizes->surface_depth);	138	sizes->surface_depth);
-		139
-		140	mutex_lock(&dev->struct_mutex);
139		141
140	size = mode_cmd.pitches[0] * mode_cmd.height;	142	size = mode_cmd.pitches[0] * mode_cmd.height;
141	size = PAGE_ALIGN(size);	143	size = PAGE_ALIGN(size);
142		144
143	/* If the FB is too big, just don't use it since fbdev is not very	145	/* If the FB is too big, just don't use it since fbdev is not very
144	* important and we should probably use that space with FBC or other	146	* important and we should probably use that space with FBC or other
145	* features. */	147	* features. */
146	if (size * 2 < dev_priv->gtt.stolen_usable_size)	148	if (size * 2 < dev_priv->gtt.stolen_usable_size)
147	obj = i915_gem_object_create_stolen(dev, size);	149	obj = i915_gem_object_create_stolen(dev, size);
148	if (obj == NULL)	150	if (obj == NULL)
149	obj = i915_gem_alloc_object(dev, size);	151	obj = i915_gem_alloc_object(dev, size);
150	if (!obj) {	152	if (!obj) {
151	DRM_ERROR("failed to allocate framebuffer\n");	153	DRM_ERROR("failed to allocate framebuffer\n");
152	ret = -ENOMEM;	154	ret = -ENOMEM;
153	goto out;	155	goto out;
154	}	156	}
155		157
156	fb = __intel_framebuffer_create(dev, &mode_cmd, obj);	158	fb = __intel_framebuffer_create(dev, &mode_cmd, obj);
157	if (IS_ERR(fb)) {	159	if (IS_ERR(fb)) {
-		160	drm_gem_object_unreference(&obj->base);
158	ret = PTR_ERR(fb);	161	ret = PTR_ERR(fb);
159	goto out_unref;	162	goto out;
160	}	163	}
161		-
162	/* Flush everything out, we'll be doing GTT only from now on */	-
163	ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL, NULL);	-
164	if (ret) {	164
165	DRM_ERROR("failed to pin obj: %d\n", ret);	-
166	goto out_fb;	-
167	}	165	mutex_unlock(&dev->struct_mutex);
168		166
169	ifbdev->fb = to_intel_framebuffer(fb);	167	ifbdev->fb = to_intel_framebuffer(fb);
170		168
171	return 0;	169	return 0;
172		-
173	out_fb:	-
174	drm_framebuffer_remove(fb);	-
175	out_unref:	-
176	drm_gem_object_unreference(&obj->base);	170
-		171	out:
-		172	mutex_unlock(&dev->struct_mutex);
-		173	if (!IS_ERR_OR_NULL(fb))
177	out:	174	drm_framebuffer_unreference(fb);
178	return ret;	175	return ret;
179	}	176	}
180		177
181	static int intelfb_create(struct drm_fb_helper *helper,	178	static int intelfb_create(struct drm_fb_helper *helper,
182	struct drm_fb_helper_surface_size *sizes)	179	struct drm_fb_helper_surface_size *sizes)
183	{	180	{
184	struct intel_fbdev *ifbdev =	181	struct intel_fbdev *ifbdev =
185	container_of(helper, struct intel_fbdev, helper);	182	container_of(helper, struct intel_fbdev, helper);
186	struct intel_framebuffer *intel_fb = ifbdev->fb;	183	struct intel_framebuffer *intel_fb = ifbdev->fb;
187	struct drm_device *dev = helper->dev;	184	struct drm_device *dev = helper->dev;
188	struct drm_i915_private *dev_priv = dev->dev_private;	185	struct drm_i915_private *dev_priv = dev->dev_private;
189	struct fb_info *info;	186	struct fb_info *info;
190	struct drm_framebuffer *fb;	187	struct drm_framebuffer *fb;
191	struct drm_i915_gem_object *obj;	188	struct drm_i915_gem_object *obj;
192	int size, ret;	189	int size, ret;
193	bool prealloc = false;	190	bool prealloc = false;
194		-
195	mutex_lock(&dev->struct_mutex);	-
196		191
197	if (intel_fb &&	192	if (intel_fb &&
198	(sizes->fb_width > intel_fb->base.width \|\|	193	(sizes->fb_width > intel_fb->base.width \|\|
199	sizes->fb_height > intel_fb->base.height)) {	194	sizes->fb_height > intel_fb->base.height)) {
200	DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"	195	DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
201	" releasing it\n",	196	" releasing it\n",
202	intel_fb->base.width, intel_fb->base.height,	197	intel_fb->base.width, intel_fb->base.height,
203	sizes->fb_width, sizes->fb_height);	198	sizes->fb_width, sizes->fb_height);
204	drm_framebuffer_unreference(&intel_fb->base);	199	drm_framebuffer_unreference(&intel_fb->base);
205	intel_fb = ifbdev->fb = NULL;	200	intel_fb = ifbdev->fb = NULL;
206	}	201	}
207	if (!intel_fb \|\| WARN_ON(!intel_fb->obj)) {	202	if (!intel_fb \|\| WARN_ON(!intel_fb->obj)) {
208	DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");	203	DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
209	ret = intelfb_alloc(helper, sizes);	204	ret = intelfb_alloc(helper, sizes);
210	if (ret)	205	if (ret)
211	goto out_unlock;	206	return ret;
212	intel_fb = ifbdev->fb;	207	intel_fb = ifbdev->fb;
213	} else {	208	} else {
214	DRM_DEBUG_KMS("re-using BIOS fb\n");	209	DRM_DEBUG_KMS("re-using BIOS fb\n");
215	prealloc = true;	210	prealloc = true;
216	sizes->fb_width = intel_fb->base.width;	211	sizes->fb_width = intel_fb->base.width;
217	sizes->fb_height = intel_fb->base.height;	212	sizes->fb_height = intel_fb->base.height;
218	}	213	}
219		214
220	obj = intel_fb->obj;	215	obj = intel_fb->obj;
221	size = obj->base.size;	216	size = obj->base.size;
-		217
-		218	mutex_lock(&dev->struct_mutex);
-		219
-		220	/* Pin the GGTT vma for our access via info->screen_base.
-		221	* This also validates that any existing fb inherited from the
-		222	* BIOS is suitable for own access.
-		223	*/
-		224	ret = intel_pin_and_fence_fb_obj(NULL, &ifbdev->fb->base, NULL);
-		225	if (ret)
-		226	goto out_unlock;
222		227
223	info = drm_fb_helper_alloc_fbi(helper);	228	info = drm_fb_helper_alloc_fbi(helper);
-		229	if (IS_ERR(info)) {
224	if (IS_ERR(info)) {	230	DRM_ERROR("Failed to allocate fb_info\n");
225	ret = PTR_ERR(info);	231	ret = PTR_ERR(info);
226	goto out_unpin;	232	goto out_unpin;
227	}	233	}
228		234
229	info->par = helper;	235	info->par = helper;
230		236
231	fb = &ifbdev->fb->base;	237	fb = &ifbdev->fb->base;
232		238
233	ifbdev->helper.fb = fb;	239	ifbdev->helper.fb = fb;
234		240
235	strcpy(info->fix.id, "inteldrmfb");	241	strcpy(info->fix.id, "inteldrmfb");
236		242
237	info->flags = FBINFO_DEFAULT \| FBINFO_CAN_FORCE_OUTPUT;	243	info->flags = FBINFO_DEFAULT \| FBINFO_CAN_FORCE_OUTPUT;
238	info->fbops = &intelfb_ops;	244	info->fbops = &intelfb_ops;
239		245
240	/* setup aperture base/size for vesafb takeover */	246	/* setup aperture base/size for vesafb takeover */
241	info->apertures->ranges[0].base = dev->mode_config.fb_base;	247	info->apertures->ranges[0].base = dev->mode_config.fb_base;
242	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;	248	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;
243		249
244	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);	250	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);
245	info->fix.smem_len = size;	251	info->fix.smem_len = size;
246		252
247	info->screen_base = (void*) 0xFE000000;	253	info->screen_base = (void*) 0xFE000000;
248	info->screen_size = size;	254	info->screen_size = size;
249		255
250	/* This driver doesn't need a VT switch to restore the mode on resume */	256	/* This driver doesn't need a VT switch to restore the mode on resume */
251	info->skip_vt_switch = true;	257	info->skip_vt_switch = true;
252		258
253	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);	259	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
254	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);	260	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
255		261
256	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */	262	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
257		263
258	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n",	264	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n",
259	fb->width, fb->height,	265	fb->width, fb->height,
260	i915_gem_obj_ggtt_offset(obj), obj);	266	i915_gem_obj_ggtt_offset(obj), obj);
261		267
262	mutex_unlock(&dev->struct_mutex);	268	mutex_unlock(&dev->struct_mutex);
263	return 0;	269	return 0;
264		270
265	out_destroy_fbi:	271	out_destroy_fbi:
266	drm_fb_helper_release_fbi(helper);	272	drm_fb_helper_release_fbi(helper);
267	out_unpin:	273	out_unpin:
268	i915_gem_object_ggtt_unpin(obj);	274	i915_gem_object_ggtt_unpin(obj);
269	drm_gem_object_unreference(&obj->base);	-
270	out_unlock:	275	out_unlock:
271	mutex_unlock(&dev->struct_mutex);	276	mutex_unlock(&dev->struct_mutex);
272	return ret;	277	return ret;
273	}	278	}
274		279
275	/** Sets the color ramps on behalf of RandR */	280	/** Sets the color ramps on behalf of RandR */
276	static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,	281	static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
277	u16 blue, int regno)	282	u16 blue, int regno)
278	{	283	{
279	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);	284	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
280		285
281	intel_crtc->lut_r[regno] = red >> 8;	286	intel_crtc->lut_r[regno] = red >> 8;
282	intel_crtc->lut_g[regno] = green >> 8;	287	intel_crtc->lut_g[regno] = green >> 8;
283	intel_crtc->lut_b[regno] = blue >> 8;	288	intel_crtc->lut_b[regno] = blue >> 8;
284	}	289	}
285		290
286	static void intel_crtc_fb_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,	291	static void intel_crtc_fb_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
287	u16 *blue, int regno)	292	u16 *blue, int regno)
288	{	293	{
289	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);	294	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
290		295
291	*red = intel_crtc->lut_r[regno] << 8;	296	*red = intel_crtc->lut_r[regno] << 8;
292	*green = intel_crtc->lut_g[regno] << 8;	297	*green = intel_crtc->lut_g[regno] << 8;
293	*blue = intel_crtc->lut_b[regno] << 8;	298	*blue = intel_crtc->lut_b[regno] << 8;
294	}	299	}
295		300
296	static struct drm_fb_helper_crtc *	301	static struct drm_fb_helper_crtc *
297	intel_fb_helper_crtc(struct drm_fb_helper fb_helper, struct drm_crtc crtc)	302	intel_fb_helper_crtc(struct drm_fb_helper fb_helper, struct drm_crtc crtc)
298	{	303	{
299	int i;	304	int i;
300		305
301	for (i = 0; i < fb_helper->crtc_count; i++)	306	for (i = 0; i < fb_helper->crtc_count; i++)
302	if (fb_helper->crtc_info[i].mode_set.crtc == crtc)	307	if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
303	return &fb_helper->crtc_info[i];	308	return &fb_helper->crtc_info[i];
304		309
305	return NULL;	310	return NULL;
306	}	311	}
307		312
308	/*	313	/*
309	* Try to read the BIOS display configuration and use it for the initial	314	* Try to read the BIOS display configuration and use it for the initial
310	* fb configuration.	315	* fb configuration.
311	*	316	*
312	* The BIOS or boot loader will generally create an initial display	317	* The BIOS or boot loader will generally create an initial display
313	* configuration for us that includes some set of active pipes and displays.	318	* configuration for us that includes some set of active pipes and displays.
314	* This routine tries to figure out which pipes and connectors are active	319	* This routine tries to figure out which pipes and connectors are active
315	* and stuffs them into the crtcs and modes array given to us by the	320	* and stuffs them into the crtcs and modes array given to us by the
316	* drm_fb_helper code.	321	* drm_fb_helper code.
317	*	322	*
318	* The overall sequence is:	323	* The overall sequence is:
319	* intel_fbdev_init - from driver load	324	* intel_fbdev_init - from driver load
320	* intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data	325	* intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
321	* drm_fb_helper_init - build fb helper structs	326	* drm_fb_helper_init - build fb helper structs
322	* drm_fb_helper_single_add_all_connectors - more fb helper structs	327	* drm_fb_helper_single_add_all_connectors - more fb helper structs
323	* intel_fbdev_initial_config - apply the config	328	* intel_fbdev_initial_config - apply the config
324	* drm_fb_helper_initial_config - call ->probe then register_framebuffer()	329	* drm_fb_helper_initial_config - call ->probe then register_framebuffer()
325	* drm_setup_crtcs - build crtc config for fbdev	330	* drm_setup_crtcs - build crtc config for fbdev
326	* intel_fb_initial_config - find active connectors etc	331	* intel_fb_initial_config - find active connectors etc
327	* drm_fb_helper_single_fb_probe - set up fbdev	332	* drm_fb_helper_single_fb_probe - set up fbdev
328	* intelfb_create - re-use or alloc fb, build out fbdev structs	333	* intelfb_create - re-use or alloc fb, build out fbdev structs
329	*	334	*
330	* Note that we don't make special consideration whether we could actually	335	* Note that we don't make special consideration whether we could actually
331	* switch to the selected modes without a full modeset. E.g. when the display	336	* switch to the selected modes without a full modeset. E.g. when the display
332	* is in VGA mode we need to recalculate watermarks and set a new high-res	337	* is in VGA mode we need to recalculate watermarks and set a new high-res
333	* framebuffer anyway.	338	* framebuffer anyway.
334	*/	339	*/
335	static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,	340	static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
336	struct drm_fb_helper_crtc **crtcs,	341	struct drm_fb_helper_crtc **crtcs,
337	struct drm_display_mode **modes,	342	struct drm_display_mode **modes,
338	struct drm_fb_offset *offsets,	343	struct drm_fb_offset *offsets,
339	bool *enabled, int width, int height)	344	bool *enabled, int width, int height)
340	{	345	{
341	struct drm_device *dev = fb_helper->dev;	346	struct drm_device *dev = fb_helper->dev;
342	int i, j;	347	int i, j;
343	bool *save_enabled;	348	bool *save_enabled;
344	bool fallback = true;	349	bool fallback = true;
345	int num_connectors_enabled = 0;	350	int num_connectors_enabled = 0;
346	int num_connectors_detected = 0;	351	int num_connectors_detected = 0;
347	uint64_t conn_configured = 0, mask;	352	uint64_t conn_configured = 0, mask;
348	int pass = 0;	353	int pass = 0;
349		354
350	save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool),	355	save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool),
351	GFP_KERNEL);	356	GFP_KERNEL);
352	if (!save_enabled)	357	if (!save_enabled)
353	return false;	358	return false;
354		359
355	memcpy(save_enabled, enabled, fb_helper->connector_count);	360	memcpy(save_enabled, enabled, fb_helper->connector_count);
356	mask = (1 << fb_helper->connector_count) - 1;	361	mask = (1 << fb_helper->connector_count) - 1;
357	retry:	362	retry:
358	for (i = 0; i < fb_helper->connector_count; i++) {	363	for (i = 0; i < fb_helper->connector_count; i++) {
359	struct drm_fb_helper_connector *fb_conn;	364	struct drm_fb_helper_connector *fb_conn;
360	struct drm_connector *connector;	365	struct drm_connector *connector;
361	struct drm_encoder *encoder;	366	struct drm_encoder *encoder;
362	struct drm_fb_helper_crtc *new_crtc;	367	struct drm_fb_helper_crtc *new_crtc;
363		368
364	fb_conn = fb_helper->connector_info[i];	369	fb_conn = fb_helper->connector_info[i];
365	connector = fb_conn->connector;	370	connector = fb_conn->connector;
366		371
367	if (conn_configured & (1 << i))	372	if (conn_configured & (1 << i))
368	continue;	373	continue;
369		374
370	if (pass == 0 && !connector->has_tile)	375	if (pass == 0 && !connector->has_tile)
371	continue;	376	continue;
372		377
373	if (connector->status == connector_status_connected)	378	if (connector->status == connector_status_connected)
374	num_connectors_detected++;	379	num_connectors_detected++;
375		380
376	if (!enabled[i]) {	381	if (!enabled[i]) {
377	DRM_DEBUG_KMS("connector %s not enabled, skipping\n",	382	DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
378	connector->name);	383	connector->name);
379	conn_configured \|= (1 << i);	384	conn_configured \|= (1 << i);
380	continue;	385	continue;
381	}	386	}
382		387
383	if (connector->force == DRM_FORCE_OFF) {	388	if (connector->force == DRM_FORCE_OFF) {
384	DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",	389	DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
385	connector->name);	390	connector->name);
386	enabled[i] = false;	391	enabled[i] = false;
387	continue;	392	continue;
388	}	393	}
389		394
390	encoder = connector->encoder;	395	encoder = connector->encoder;
391	if (!encoder \|\| WARN_ON(!encoder->crtc)) {	396	if (!encoder \|\| WARN_ON(!encoder->crtc)) {
392	if (connector->force > DRM_FORCE_OFF)	397	if (connector->force > DRM_FORCE_OFF)
393	goto bail;	398	goto bail;
394		399
395	DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",	400	DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
396	connector->name);	401	connector->name);
397	enabled[i] = false;	402	enabled[i] = false;
398	conn_configured \|= (1 << i);	403	conn_configured \|= (1 << i);
399	continue;	404	continue;
400	}	405	}
401		406
402	num_connectors_enabled++;	407	num_connectors_enabled++;
403		408
404	new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);	409	new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);
405		410
406	/*	411	/*
407	* Make sure we're not trying to drive multiple connectors	412	* Make sure we're not trying to drive multiple connectors
408	* with a single CRTC, since our cloning support may not	413	* with a single CRTC, since our cloning support may not
409	* match the BIOS.	414	* match the BIOS.
410	*/	415	*/
411	for (j = 0; j < fb_helper->connector_count; j++) {	416	for (j = 0; j < fb_helper->connector_count; j++) {
412	if (crtcs[j] == new_crtc) {	417	if (crtcs[j] == new_crtc) {
413	DRM_DEBUG_KMS("fallback: cloned configuration\n");	418	DRM_DEBUG_KMS("fallback: cloned configuration\n");
414	goto bail;	419	goto bail;
415	}	420	}
416	}	421	}
417		422
418	DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",	423	DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
419	connector->name);	424	connector->name);
420		425
421	/* go for command line mode first */	426	/* go for command line mode first */
422	modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);	427	modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);
423		428
424	/* try for preferred next */	429	/* try for preferred next */
425	if (!modes[i]) {	430	if (!modes[i]) {
426	DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",	431	DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
427	connector->name, connector->has_tile);	432	connector->name, connector->has_tile);
428	modes[i] = drm_has_preferred_mode(fb_conn, width,	433	modes[i] = drm_has_preferred_mode(fb_conn, width,
429	height);	434	height);
430	}	435	}
431		436
432	/* No preferred mode marked by the EDID? Are there any modes? */	437	/* No preferred mode marked by the EDID? Are there any modes? */
433	if (!modes[i] && !list_empty(&connector->modes)) {	438	if (!modes[i] && !list_empty(&connector->modes)) {
434	DRM_DEBUG_KMS("using first mode listed on connector %s\n",	439	DRM_DEBUG_KMS("using first mode listed on connector %s\n",
435	connector->name);	440	connector->name);
436	modes[i] = list_first_entry(&connector->modes,	441	modes[i] = list_first_entry(&connector->modes,
437	struct drm_display_mode,	442	struct drm_display_mode,
438	head);	443	head);
439	}	444	}
440		445
441	/* last resort: use current mode */	446	/* last resort: use current mode */
442	if (!modes[i]) {	447	if (!modes[i]) {
443	/*	448	/*
444	* IMPORTANT: We want to use the adjusted mode (i.e.	449	* IMPORTANT: We want to use the adjusted mode (i.e.
445	* after the panel fitter upscaling) as the initial	450	* after the panel fitter upscaling) as the initial
446	* config, not the input mode, which is what crtc->mode	451	* config, not the input mode, which is what crtc->mode
447	* usually contains. But since our current	452	* usually contains. But since our current
448	* code puts a mode derived from the post-pfit timings	453	* code puts a mode derived from the post-pfit timings
449	* into crtc->mode this works out correctly.	454	* into crtc->mode this works out correctly.
450	*/	455	*/
451	DRM_DEBUG_KMS("looking for current mode on connector %s\n",	456	DRM_DEBUG_KMS("looking for current mode on connector %s\n",
452	connector->name);	457	connector->name);
453	modes[i] = &encoder->crtc->mode;	458	modes[i] = &encoder->crtc->mode;
454	}	459	}
455	crtcs[i] = new_crtc;	460	crtcs[i] = new_crtc;
456		461
457	DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",	462	DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",
458	connector->name,	463	connector->name,
459	pipe_name(to_intel_crtc(encoder->crtc)->pipe),	464	pipe_name(to_intel_crtc(encoder->crtc)->pipe),
460	encoder->crtc->base.id,	465	encoder->crtc->base.id,
461	modes[i]->hdisplay, modes[i]->vdisplay,	466	modes[i]->hdisplay, modes[i]->vdisplay,
462	modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");	467	modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");
463		468
464	fallback = false;	469	fallback = false;
465	conn_configured \|= (1 << i);	470	conn_configured \|= (1 << i);
466	}	471	}
467		472
468	if ((conn_configured & mask) != mask) {	473	if ((conn_configured & mask) != mask) {
469	pass++;	474	pass++;
470	goto retry;	475	goto retry;
471	}	476	}
472		477
473	/*	478	/*
474	* If the BIOS didn't enable everything it could, fall back to have the	479	* If the BIOS didn't enable everything it could, fall back to have the
475	* same user experiencing of lighting up as much as possible like the	480	* same user experiencing of lighting up as much as possible like the
476	* fbdev helper library.	481	* fbdev helper library.
477	*/	482	*/
478	if (num_connectors_enabled != num_connectors_detected &&	483	if (num_connectors_enabled != num_connectors_detected &&
479	num_connectors_enabled < INTEL_INFO(dev)->num_pipes) {	484	num_connectors_enabled < INTEL_INFO(dev)->num_pipes) {
480	DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");	485	DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
481	DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,	486	DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
482	num_connectors_detected);	487	num_connectors_detected);
483	fallback = true;	488	fallback = true;

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/i915/intel_fbdev.c – Rev 6660 → 6937