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- /*
- * 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 <linux/async.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/console.h>
- #include <linux/errno.h>
- #include <linux/string.h>
- #include <linux/mm.h>
- #include <linux/tty.h>
- #include <linux/sysrq.h>
- #include <linux/delay.h>
- #include <linux/fb.h>
- #include <linux/init.h>
- #include <linux/vga_switcheroo.h>
- #include <drm/drmP.h>
- #include <drm/drm_crtc.h>
- #include <drm/drm_fb_helper.h>
- #include "intel_drv.h"
- #include <drm/i915_drm.h>
- #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 = drm_fb_helper_cfb_fillrect,
- .fb_copyarea = drm_fb_helper_cfb_copyarea,
- .fb_imageblit = drm_fb_helper_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;
- 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);
- 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)) {
- ret = PTR_ERR(fb);
- goto out_unref;
- }
- /* Flush everything out, we'll be doing GTT only from now on */
- ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL, NULL);
- if (ret) {
- DRM_ERROR("failed to pin obj: %d\n", ret);
- goto out_fb;
- }
- ifbdev->fb = to_intel_framebuffer(fb);
- return 0;
- out_fb:
- drm_framebuffer_remove(fb);
- out_unref:
- drm_gem_object_unreference(&obj->base);
- out:
- 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;
- mutex_lock(&dev->struct_mutex);
- 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)
- goto out_unlock;
- 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;
- info = drm_fb_helper_alloc_fbi(helper);
- if (IS_ERR(info)) {
- 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 =
- ioremap_wc(dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj),
- size);
- if (!info->screen_base) {
- ret = -ENOSPC;
- goto out_destroy_fbi;
- }
- 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);
- /* If the object is shmemfs backed, it will have given us zeroed pages.
- * If the object is stolen however, it will be full of whatever
- * garbage was left in there.
- */
- if (ifbdev->fb->obj->stolen && !prealloc)
- memset_io(info->screen_base, 0, info->screen_size);
- /* 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);
- vga_switcheroo_client_fb_set(dev->pdev, info);
- return 0;
- out_destroy_fbi:
- drm_fb_helper_release_fbi(helper);
- out_unpin:
- i915_gem_object_ggtt_unpin(obj);
- drm_gem_object_unreference(&obj->base);
- 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)
- {
- drm_fb_helper_unregister_fbi(&ifbdev->helper);
- drm_fb_helper_release_fbi(&ifbdev->helper);
- drm_fb_helper_fini(&ifbdev->helper);
- 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;
- }
- static void intel_fbdev_suspend_worker(struct work_struct *work)
- {
- intel_fbdev_set_suspend(container_of(work,
- struct drm_i915_private,
- fbdev_suspend_work)->dev,
- FBINFO_STATE_RUNNING,
- true);
- }
- 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;
- INIT_WORK(&dev_priv->fbdev_suspend_work, intel_fbdev_suspend_worker);
- 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_fini(struct drm_device *dev)
- {
- struct drm_i915_private *dev_priv = dev->dev_private;
- if (!dev_priv->fbdev)
- return;
- flush_work(&dev_priv->fbdev_suspend_work);
- async_synchronize_full();
- intel_fbdev_destroy(dev, dev_priv->fbdev);
- kfree(dev_priv->fbdev);
- dev_priv->fbdev = NULL;
- }
- void intel_fbdev_set_suspend(struct drm_device *dev, int state, bool synchronous)
- {
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_fbdev *ifbdev = dev_priv->fbdev;
- struct fb_info *info;
- if (!ifbdev)
- return;
- info = ifbdev->helper.fbdev;
- if (synchronous) {
- /* Flush any pending work to turn the console on, and then
- * wait to turn it off. It must be synchronous as we are
- * about to suspend or unload the driver.
- *
- * Note that from within the work-handler, we cannot flush
- * ourselves, so only flush outstanding work upon suspend!
- */
- if (state != FBINFO_STATE_RUNNING)
- flush_work(&dev_priv->fbdev_suspend_work);
- console_lock();
- } else {
- /*
- * The console lock can be pretty contented on resume due
- * to all the printk activity. Try to keep it out of the hot
- * path of resume if possible.
- */
- WARN_ON(state != FBINFO_STATE_RUNNING);
- if (!console_trylock()) {
- /* Don't block our own workqueue as this can
- * be run in parallel with other i915.ko tasks.
- */
- schedule_work(&dev_priv->fbdev_suspend_work);
- return;
- }
- }
- /* On resume from hibernation: If the object is shmemfs backed, it has
- * been restored from swap. If the object is stolen however, it will be
- * full of whatever garbage was left in there.
- */
- if (state == FBINFO_STATE_RUNNING && ifbdev->fb->obj->stolen)
- memset_io(info->screen_base, 0, info->screen_size);
- drm_fb_helper_set_suspend(&ifbdev->helper, state);
- console_unlock();
- }
- 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);
- }
- void intel_fbdev_restore_mode(struct drm_device *dev)
- {
- int ret;
- struct drm_i915_private *dev_priv = dev->dev_private;
- struct intel_fbdev *ifbdev = dev_priv->fbdev;
- struct drm_fb_helper *fb_helper;
- if (!ifbdev)
- return;
- fb_helper = &ifbdev->helper;
- ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
- if (ret) {
- DRM_DEBUG("failed to restore crtc mode\n");
- } else {
- mutex_lock(&fb_helper->dev->struct_mutex);
- intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT);
- mutex_unlock(&fb_helper->dev->struct_mutex);
- }
- }
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