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);
 
 
	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->state->best_encoder;
		if (!encoder || WARN_ON(!connector->state->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, connector->state->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.
			 *
			 * This is crtc->mode and not crtc->state->mode for the
			 * fastboot check to work correctly. crtc_state->mode has
			 * I915_MODE_FLAG_INHERITED, which we clear to force check
			 * state.
			 */
			DRM_DEBUG_KMS("looking for current mode on connector %s\n",
				      connector->name);
			modes[i] = &connector->state->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(connector->state->crtc)->pipe),
			      connector->state->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 6937	Rev 7144
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 = NULL;	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		139
140	mutex_lock(&dev->struct_mutex);	140	mutex_lock(&dev->struct_mutex);
141		141
142	size = mode_cmd.pitches[0] * mode_cmd.height;	142	size = mode_cmd.pitches[0] * mode_cmd.height;
143	size = PAGE_ALIGN(size);	143	size = PAGE_ALIGN(size);
144		144
145	/* 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
146	* 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
147	* features. */	147	* features. */
148	if (size * 2 < dev_priv->gtt.stolen_usable_size)	148	if (size * 2 < dev_priv->gtt.stolen_usable_size)
149	obj = i915_gem_object_create_stolen(dev, size);	149	obj = i915_gem_object_create_stolen(dev, size);
150	if (obj == NULL)	150	if (obj == NULL)
151	obj = i915_gem_alloc_object(dev, size);	151	obj = i915_gem_alloc_object(dev, size);
152	if (!obj) {	152	if (!obj) {
153	DRM_ERROR("failed to allocate framebuffer\n");	153	DRM_ERROR("failed to allocate framebuffer\n");
154	ret = -ENOMEM;	154	ret = -ENOMEM;
155	goto out;	155	goto out;
156	}	156	}
157		157
158	fb = __intel_framebuffer_create(dev, &mode_cmd, obj);	158	fb = __intel_framebuffer_create(dev, &mode_cmd, obj);
159	if (IS_ERR(fb)) {	159	if (IS_ERR(fb)) {
160	drm_gem_object_unreference(&obj->base);	160	drm_gem_object_unreference(&obj->base);
161	ret = PTR_ERR(fb);	161	ret = PTR_ERR(fb);
162	goto out;	162	goto out;
163	}	163	}
164		164
165	mutex_unlock(&dev->struct_mutex);	165	mutex_unlock(&dev->struct_mutex);
166		166
167	ifbdev->fb = to_intel_framebuffer(fb);	167	ifbdev->fb = to_intel_framebuffer(fb);
168		168
169	return 0;	169	return 0;
170		170
171	out:	171	out:
172	mutex_unlock(&dev->struct_mutex);	172	mutex_unlock(&dev->struct_mutex);
173	if (!IS_ERR_OR_NULL(fb))	-
174	drm_framebuffer_unreference(fb);	-
175	return ret;	173	return ret;
176	}	174	}
177		175
178	static int intelfb_create(struct drm_fb_helper *helper,	176	static int intelfb_create(struct drm_fb_helper *helper,
179	struct drm_fb_helper_surface_size *sizes)	177	struct drm_fb_helper_surface_size *sizes)
180	{	178	{
181	struct intel_fbdev *ifbdev =	179	struct intel_fbdev *ifbdev =
182	container_of(helper, struct intel_fbdev, helper);	180	container_of(helper, struct intel_fbdev, helper);
183	struct intel_framebuffer *intel_fb = ifbdev->fb;	181	struct intel_framebuffer *intel_fb = ifbdev->fb;
184	struct drm_device *dev = helper->dev;	182	struct drm_device *dev = helper->dev;
185	struct drm_i915_private *dev_priv = dev->dev_private;	183	struct drm_i915_private *dev_priv = dev->dev_private;
186	struct fb_info *info;	184	struct fb_info *info;
187	struct drm_framebuffer *fb;	185	struct drm_framebuffer *fb;
188	struct drm_i915_gem_object *obj;	186	struct drm_i915_gem_object *obj;
189	int size, ret;	187	int size, ret;
190	bool prealloc = false;	188	bool prealloc = false;
191		189
192	if (intel_fb &&	190	if (intel_fb &&
193	(sizes->fb_width > intel_fb->base.width \|\|	191	(sizes->fb_width > intel_fb->base.width \|\|
194	sizes->fb_height > intel_fb->base.height)) {	192	sizes->fb_height > intel_fb->base.height)) {
195	DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"	193	DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d),"
196	" releasing it\n",	194	" releasing it\n",
197	intel_fb->base.width, intel_fb->base.height,	195	intel_fb->base.width, intel_fb->base.height,
198	sizes->fb_width, sizes->fb_height);	196	sizes->fb_width, sizes->fb_height);
199	drm_framebuffer_unreference(&intel_fb->base);	197	drm_framebuffer_unreference(&intel_fb->base);
200	intel_fb = ifbdev->fb = NULL;	198	intel_fb = ifbdev->fb = NULL;
201	}	199	}
202	if (!intel_fb \|\| WARN_ON(!intel_fb->obj)) {	200	if (!intel_fb \|\| WARN_ON(!intel_fb->obj)) {
203	DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");	201	DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n");
204	ret = intelfb_alloc(helper, sizes);	202	ret = intelfb_alloc(helper, sizes);
205	if (ret)	203	if (ret)
206	return ret;	204	return ret;
207	intel_fb = ifbdev->fb;	205	intel_fb = ifbdev->fb;
208	} else {	206	} else {
209	DRM_DEBUG_KMS("re-using BIOS fb\n");	207	DRM_DEBUG_KMS("re-using BIOS fb\n");
210	prealloc = true;	208	prealloc = true;
211	sizes->fb_width = intel_fb->base.width;	209	sizes->fb_width = intel_fb->base.width;
212	sizes->fb_height = intel_fb->base.height;	210	sizes->fb_height = intel_fb->base.height;
213	}	211	}
214		212
215	obj = intel_fb->obj;	213	obj = intel_fb->obj;
216	size = obj->base.size;	214	size = obj->base.size;
217		215
218	mutex_lock(&dev->struct_mutex);	216	mutex_lock(&dev->struct_mutex);
219		217
220	/* Pin the GGTT vma for our access via info->screen_base.	218	/* Pin the GGTT vma for our access via info->screen_base.
221	* This also validates that any existing fb inherited from the	219	* This also validates that any existing fb inherited from the
222	* BIOS is suitable for own access.	220	* BIOS is suitable for own access.
223	*/	221	*/
224	ret = intel_pin_and_fence_fb_obj(NULL, &ifbdev->fb->base, NULL);	222	ret = intel_pin_and_fence_fb_obj(NULL, &ifbdev->fb->base, NULL);
225	if (ret)	223	if (ret)
226	goto out_unlock;	224	goto out_unlock;
227		225
228	info = drm_fb_helper_alloc_fbi(helper);	226	info = drm_fb_helper_alloc_fbi(helper);
229	if (IS_ERR(info)) {	227	if (IS_ERR(info)) {
230	DRM_ERROR("Failed to allocate fb_info\n");	228	DRM_ERROR("Failed to allocate fb_info\n");
231	ret = PTR_ERR(info);	229	ret = PTR_ERR(info);
232	goto out_unpin;	230	goto out_unpin;
233	}	231	}
234		232
235	info->par = helper;	233	info->par = helper;
236		234
237	fb = &ifbdev->fb->base;	235	fb = &ifbdev->fb->base;
238		236
239	ifbdev->helper.fb = fb;	237	ifbdev->helper.fb = fb;
240		238
241	strcpy(info->fix.id, "inteldrmfb");	239	strcpy(info->fix.id, "inteldrmfb");
242		240
243	info->flags = FBINFO_DEFAULT \| FBINFO_CAN_FORCE_OUTPUT;	241	info->flags = FBINFO_DEFAULT \| FBINFO_CAN_FORCE_OUTPUT;
244	info->fbops = &intelfb_ops;	242	info->fbops = &intelfb_ops;
245		243
246	/* setup aperture base/size for vesafb takeover */	244	/* setup aperture base/size for vesafb takeover */
247	info->apertures->ranges[0].base = dev->mode_config.fb_base;	245	info->apertures->ranges[0].base = dev->mode_config.fb_base;
248	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;	246	info->apertures->ranges[0].size = dev_priv->gtt.mappable_end;
249		247
250	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);	248	info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj);
251	info->fix.smem_len = size;	249	info->fix.smem_len = size;
252		250
253	info->screen_base = (void*) 0xFE000000;	251	info->screen_base = (void*) 0xFE000000;
254	info->screen_size = size;	252	info->screen_size = size;
255		253
256	/* This driver doesn't need a VT switch to restore the mode on resume */	254	/* This driver doesn't need a VT switch to restore the mode on resume */
257	info->skip_vt_switch = true;	255	info->skip_vt_switch = true;
258		256
259	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);	257	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
260	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);	258	drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
261		259
262	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */	260	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
263		261
264	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n",	262	DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n",
265	fb->width, fb->height,	263	fb->width, fb->height,
266	i915_gem_obj_ggtt_offset(obj), obj);	264	i915_gem_obj_ggtt_offset(obj), obj);
267		265
268	mutex_unlock(&dev->struct_mutex);	266	mutex_unlock(&dev->struct_mutex);
269	return 0;	267	return 0;
270		268
271	out_destroy_fbi:	269	out_destroy_fbi:
272	drm_fb_helper_release_fbi(helper);	270	drm_fb_helper_release_fbi(helper);
273	out_unpin:	271	out_unpin:
274	i915_gem_object_ggtt_unpin(obj);	272	i915_gem_object_ggtt_unpin(obj);
275	out_unlock:	273	out_unlock:
276	mutex_unlock(&dev->struct_mutex);	274	mutex_unlock(&dev->struct_mutex);
277	return ret;	275	return ret;
278	}	276	}
279		277
280	/** Sets the color ramps on behalf of RandR */	278	/** Sets the color ramps on behalf of RandR */
281	static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,	279	static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
282	u16 blue, int regno)	280	u16 blue, int regno)
283	{	281	{
284	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);	282	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
285		283
286	intel_crtc->lut_r[regno] = red >> 8;	284	intel_crtc->lut_r[regno] = red >> 8;
287	intel_crtc->lut_g[regno] = green >> 8;	285	intel_crtc->lut_g[regno] = green >> 8;
288	intel_crtc->lut_b[regno] = blue >> 8;	286	intel_crtc->lut_b[regno] = blue >> 8;
289	}	287	}
290		288
291	static void intel_crtc_fb_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,	289	static void intel_crtc_fb_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
292	u16 *blue, int regno)	290	u16 *blue, int regno)
293	{	291	{
294	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);	292	struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
295		293
296	*red = intel_crtc->lut_r[regno] << 8;	294	*red = intel_crtc->lut_r[regno] << 8;
297	*green = intel_crtc->lut_g[regno] << 8;	295	*green = intel_crtc->lut_g[regno] << 8;
298	*blue = intel_crtc->lut_b[regno] << 8;	296	*blue = intel_crtc->lut_b[regno] << 8;
299	}	297	}
300		298
301	static struct drm_fb_helper_crtc *	299	static struct drm_fb_helper_crtc *
302	intel_fb_helper_crtc(struct drm_fb_helper fb_helper, struct drm_crtc crtc)	300	intel_fb_helper_crtc(struct drm_fb_helper fb_helper, struct drm_crtc crtc)
303	{	301	{
304	int i;	302	int i;
305		303
306	for (i = 0; i < fb_helper->crtc_count; i++)	304	for (i = 0; i < fb_helper->crtc_count; i++)
307	if (fb_helper->crtc_info[i].mode_set.crtc == crtc)	305	if (fb_helper->crtc_info[i].mode_set.crtc == crtc)
308	return &fb_helper->crtc_info[i];	306	return &fb_helper->crtc_info[i];
309		307
310	return NULL;	308	return NULL;
311	}	309	}
312		310
313	/*	311	/*
314	* Try to read the BIOS display configuration and use it for the initial	312	* Try to read the BIOS display configuration and use it for the initial
315	* fb configuration.	313	* fb configuration.
316	*	314	*
317	* The BIOS or boot loader will generally create an initial display	315	* The BIOS or boot loader will generally create an initial display
318	* configuration for us that includes some set of active pipes and displays.	316	* configuration for us that includes some set of active pipes and displays.
319	* This routine tries to figure out which pipes and connectors are active	317	* This routine tries to figure out which pipes and connectors are active
320	* and stuffs them into the crtcs and modes array given to us by the	318	* and stuffs them into the crtcs and modes array given to us by the
321	* drm_fb_helper code.	319	* drm_fb_helper code.
322	*	320	*
323	* The overall sequence is:	321	* The overall sequence is:
324	* intel_fbdev_init - from driver load	322	* intel_fbdev_init - from driver load
325	* intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data	323	* intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data
326	* drm_fb_helper_init - build fb helper structs	324	* drm_fb_helper_init - build fb helper structs
327	* drm_fb_helper_single_add_all_connectors - more fb helper structs	325	* drm_fb_helper_single_add_all_connectors - more fb helper structs
328	* intel_fbdev_initial_config - apply the config	326	* intel_fbdev_initial_config - apply the config
329	* drm_fb_helper_initial_config - call ->probe then register_framebuffer()	327	* drm_fb_helper_initial_config - call ->probe then register_framebuffer()
330	* drm_setup_crtcs - build crtc config for fbdev	328	* drm_setup_crtcs - build crtc config for fbdev
331	* intel_fb_initial_config - find active connectors etc	329	* intel_fb_initial_config - find active connectors etc
332	* drm_fb_helper_single_fb_probe - set up fbdev	330	* drm_fb_helper_single_fb_probe - set up fbdev
333	* intelfb_create - re-use or alloc fb, build out fbdev structs	331	* intelfb_create - re-use or alloc fb, build out fbdev structs
334	*	332	*
335	* Note that we don't make special consideration whether we could actually	333	* Note that we don't make special consideration whether we could actually
336	* switch to the selected modes without a full modeset. E.g. when the display	334	* switch to the selected modes without a full modeset. E.g. when the display
337	* is in VGA mode we need to recalculate watermarks and set a new high-res	335	* is in VGA mode we need to recalculate watermarks and set a new high-res
338	* framebuffer anyway.	336	* framebuffer anyway.
339	*/	337	*/
340	static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,	338	static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper,
341	struct drm_fb_helper_crtc **crtcs,	339	struct drm_fb_helper_crtc **crtcs,
342	struct drm_display_mode **modes,	340	struct drm_display_mode **modes,
343	struct drm_fb_offset *offsets,	341	struct drm_fb_offset *offsets,
344	bool *enabled, int width, int height)	342	bool *enabled, int width, int height)
345	{	343	{
346	struct drm_device *dev = fb_helper->dev;	344	struct drm_device *dev = fb_helper->dev;
347	int i, j;	345	int i, j;
348	bool *save_enabled;	346	bool *save_enabled;
349	bool fallback = true;	347	bool fallback = true;
350	int num_connectors_enabled = 0;	348	int num_connectors_enabled = 0;
351	int num_connectors_detected = 0;	349	int num_connectors_detected = 0;
352	uint64_t conn_configured = 0, mask;	350	uint64_t conn_configured = 0, mask;
353	int pass = 0;	351	int pass = 0;
354		352
355	save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool),	353	save_enabled = kcalloc(fb_helper->connector_count, sizeof(bool),
356	GFP_KERNEL);	354	GFP_KERNEL);
357	if (!save_enabled)	355	if (!save_enabled)
358	return false;	356	return false;
359		357
360	memcpy(save_enabled, enabled, fb_helper->connector_count);	358	memcpy(save_enabled, enabled, fb_helper->connector_count);
361	mask = (1 << fb_helper->connector_count) - 1;	359	mask = (1 << fb_helper->connector_count) - 1;
362	retry:	360	retry:
363	for (i = 0; i < fb_helper->connector_count; i++) {	361	for (i = 0; i < fb_helper->connector_count; i++) {
364	struct drm_fb_helper_connector *fb_conn;	362	struct drm_fb_helper_connector *fb_conn;
365	struct drm_connector *connector;	363	struct drm_connector *connector;
366	struct drm_encoder *encoder;	364	struct drm_encoder *encoder;
367	struct drm_fb_helper_crtc *new_crtc;	365	struct drm_fb_helper_crtc *new_crtc;
368		366
369	fb_conn = fb_helper->connector_info[i];	367	fb_conn = fb_helper->connector_info[i];
370	connector = fb_conn->connector;	368	connector = fb_conn->connector;
371		369
372	if (conn_configured & (1 << i))	370	if (conn_configured & (1 << i))
373	continue;	371	continue;
374		372
375	if (pass == 0 && !connector->has_tile)	373	if (pass == 0 && !connector->has_tile)
376	continue;	374	continue;
377		375
378	if (connector->status == connector_status_connected)	376	if (connector->status == connector_status_connected)
379	num_connectors_detected++;	377	num_connectors_detected++;
380		378
381	if (!enabled[i]) {	379	if (!enabled[i]) {
382	DRM_DEBUG_KMS("connector %s not enabled, skipping\n",	380	DRM_DEBUG_KMS("connector %s not enabled, skipping\n",
383	connector->name);	381	connector->name);
384	conn_configured \|= (1 << i);	382	conn_configured \|= (1 << i);
385	continue;	383	continue;
386	}	384	}
387		385
388	if (connector->force == DRM_FORCE_OFF) {	386	if (connector->force == DRM_FORCE_OFF) {
389	DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",	387	DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n",
390	connector->name);	388	connector->name);
391	enabled[i] = false;	389	enabled[i] = false;
392	continue;	390	continue;
393	}	391	}
394		392
395	encoder = connector->encoder;	393	encoder = connector->state->best_encoder;
396	if (!encoder \|\| WARN_ON(!encoder->crtc)) {	394	if (!encoder \|\| WARN_ON(!connector->state->crtc)) {
397	if (connector->force > DRM_FORCE_OFF)	395	if (connector->force > DRM_FORCE_OFF)
398	goto bail;	396	goto bail;
399		397
400	DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",	398	DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n",
401	connector->name);	399	connector->name);
402	enabled[i] = false;	400	enabled[i] = false;
403	conn_configured \|= (1 << i);	401	conn_configured \|= (1 << i);
404	continue;	402	continue;
405	}	403	}
406		404
407	num_connectors_enabled++;	405	num_connectors_enabled++;
408		406
409	new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc);	407	new_crtc = intel_fb_helper_crtc(fb_helper, connector->state->crtc);
410		408
411	/*	409	/*
412	* Make sure we're not trying to drive multiple connectors	410	* Make sure we're not trying to drive multiple connectors
413	* with a single CRTC, since our cloning support may not	411	* with a single CRTC, since our cloning support may not
414	* match the BIOS.	412	* match the BIOS.
415	*/	413	*/
416	for (j = 0; j < fb_helper->connector_count; j++) {	414	for (j = 0; j < fb_helper->connector_count; j++) {
417	if (crtcs[j] == new_crtc) {	415	if (crtcs[j] == new_crtc) {
418	DRM_DEBUG_KMS("fallback: cloned configuration\n");	416	DRM_DEBUG_KMS("fallback: cloned configuration\n");
419	goto bail;	417	goto bail;
420	}	418	}
421	}	419	}
422		420
423	DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",	421	DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n",
424	connector->name);	422	connector->name);
425		423
426	/* go for command line mode first */	424	/* go for command line mode first */
427	modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);	425	modes[i] = drm_pick_cmdline_mode(fb_conn, width, height);
428		426
429	/* try for preferred next */	427	/* try for preferred next */
430	if (!modes[i]) {	428	if (!modes[i]) {
431	DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",	429	DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n",
432	connector->name, connector->has_tile);	430	connector->name, connector->has_tile);
433	modes[i] = drm_has_preferred_mode(fb_conn, width,	431	modes[i] = drm_has_preferred_mode(fb_conn, width,
434	height);	432	height);
435	}	433	}
436		434
437	/* No preferred mode marked by the EDID? Are there any modes? */	435	/* No preferred mode marked by the EDID? Are there any modes? */
438	if (!modes[i] && !list_empty(&connector->modes)) {	436	if (!modes[i] && !list_empty(&connector->modes)) {
439	DRM_DEBUG_KMS("using first mode listed on connector %s\n",	437	DRM_DEBUG_KMS("using first mode listed on connector %s\n",
440	connector->name);	438	connector->name);
441	modes[i] = list_first_entry(&connector->modes,	439	modes[i] = list_first_entry(&connector->modes,
442	struct drm_display_mode,	440	struct drm_display_mode,
443	head);	441	head);
444	}	442	}
445		443
446	/* last resort: use current mode */	444	/* last resort: use current mode */
447	if (!modes[i]) {	445	if (!modes[i]) {
448	/*	446	/*
449	* IMPORTANT: We want to use the adjusted mode (i.e.	447	* IMPORTANT: We want to use the adjusted mode (i.e.
450	* after the panel fitter upscaling) as the initial	448	* after the panel fitter upscaling) as the initial
451	* config, not the input mode, which is what crtc->mode	449	* config, not the input mode, which is what crtc->mode
452	* usually contains. But since our current	450	* usually contains. But since our current
453	* code puts a mode derived from the post-pfit timings	451	* code puts a mode derived from the post-pfit timings
454	* into crtc->mode this works out correctly.	452	* into crtc->mode this works out correctly.
-		453	*
-		454	* This is crtc->mode and not crtc->state->mode for the
-		455	* fastboot check to work correctly. crtc_state->mode has
-		456	* I915_MODE_FLAG_INHERITED, which we clear to force check
-		457	* state.
455	*/	458	*/
456	DRM_DEBUG_KMS("looking for current mode on connector %s\n",	459	DRM_DEBUG_KMS("looking for current mode on connector %s\n",
457	connector->name);	460	connector->name);
458	modes[i] = &encoder->crtc->mode;	461	modes[i] = &connector->state->crtc->mode;
459	}	462	}
460	crtcs[i] = new_crtc;	463	crtcs[i] = new_crtc;
461		464
462	DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",	465	DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n",
463	connector->name,	466	connector->name,
464	pipe_name(to_intel_crtc(encoder->crtc)->pipe),	467	pipe_name(to_intel_crtc(connector->state->crtc)->pipe),
465	encoder->crtc->base.id,	468	connector->state->crtc->base.id,
466	modes[i]->hdisplay, modes[i]->vdisplay,	469	modes[i]->hdisplay, modes[i]->vdisplay,
467	modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");	470	modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :"");
468		471
469	fallback = false;	472	fallback = false;
470	conn_configured \|= (1 << i);	473	conn_configured \|= (1 << i);
471	}	474	}
472		475
473	if ((conn_configured & mask) != mask) {	476	if ((conn_configured & mask) != mask) {
474	pass++;	477	pass++;
475	goto retry;	478	goto retry;
476	}	479	}
477		480
478	/*	481	/*
479	* If the BIOS didn't enable everything it could, fall back to have the	482	* If the BIOS didn't enable everything it could, fall back to have the
480	* same user experiencing of lighting up as much as possible like the	483	* same user experiencing of lighting up as much as possible like the
481	* fbdev helper library.	484	* fbdev helper library.
482	*/	485	*/
483	if (num_connectors_enabled != num_connectors_detected &&	486	if (num_connectors_enabled != num_connectors_detected &&
484	num_connectors_enabled < INTEL_INFO(dev)->num_pipes) {	487	num_connectors_enabled < INTEL_INFO(dev)->num_pipes) {
485	DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");	488	DRM_DEBUG_KMS("fallback: Not all outputs enabled\n");
486	DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,	489	DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled,
487	num_connectors_detected);	490	num_connectors_detected);
488	fallback = true;	491	fallback = true;
489	}	492	}
490		493
491	if (fallback) {	494	if (fallback) {
492	bail:	495	bail:
493	DRM_DEBUG_KMS("Not using firmware configuration\n");	496	DRM_DEBUG_KMS("Not using firmware configuration\n");
494	memcpy(enabled, save_enabled, fb_helper->connector_count);	497	memcpy(enabled, save_enabled, fb_helper->connector_count);
495	kfree(save_enabled);	498	kfree(save_enabled);

Subversion Repositories Kolibri OS

(root)/drivers/video/drm/i915/intel_fbdev.c @ 5367 – Rev 6937 → 7144