diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_fbdev.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_fbdev.c | 177 |
1 files changed, 76 insertions, 101 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index f783de611a7f..bda702c2cab8 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -24,7 +24,6 @@ * David Airlie */ -#include <linux/async.h> #include <linux/console.h> #include <linux/delay.h> #include <linux/errno.h> @@ -39,6 +38,7 @@ #include <linux/vga_switcheroo.h> #include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> #include <drm/drm_fb_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem_framebuffer_helper.h> @@ -58,7 +58,6 @@ struct intel_fbdev { struct intel_framebuffer *fb; struct i915_vma *vma; unsigned long vma_flags; - async_cookie_t cookie; int preferred_bpp; /* Whether or not fbdev hpd processing is temporarily suspended */ @@ -135,6 +134,26 @@ static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma) return i915_gem_fb_mmap(obj, vma); } +static void intel_fbdev_fb_destroy(struct fb_info *info) +{ + struct drm_fb_helper *fb_helper = info->par; + struct intel_fbdev *ifbdev = container_of(fb_helper, struct intel_fbdev, helper); + + drm_fb_helper_fini(&ifbdev->helper); + + /* + * 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. + */ + intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); + drm_framebuffer_remove(&ifbdev->fb->base); + + drm_client_release(&fb_helper->client); + drm_fb_helper_unprepare(&ifbdev->helper); + kfree(ifbdev); +} + __diag_push(); __diag_ignore_all("-Woverride-init", "Allow field initialization overrides for fb ops"); @@ -147,6 +166,7 @@ static const struct fb_ops intelfb_ops = { .fb_pan_display = intel_fbdev_pan_display, __FB_DEFAULT_DEFERRED_OPS_DRAW(intel_fbdev), .fb_mmap = intel_fbdev_mmap, + .fb_destroy = intel_fbdev_fb_destroy, }; __diag_pop(); @@ -158,7 +178,6 @@ static int intelfb_create(struct drm_fb_helper *helper, struct intel_framebuffer *intel_fb = ifbdev->fb; struct drm_device *dev = helper->dev; struct drm_i915_private *dev_priv = to_i915(dev); - struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); const struct i915_gtt_view view = { .type = I915_GTT_VIEW_NORMAL, }; @@ -250,7 +269,7 @@ static int intelfb_create(struct drm_fb_helper *helper, ifbdev->vma_flags = flags; intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref); - vga_switcheroo_client_fb_set(pdev, info); + return 0; out_unpin: @@ -276,26 +295,6 @@ static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { .fb_dirty = intelfb_dirty, }; -static void intel_fbdev_destroy(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_fini(&ifbdev->helper); - - if (ifbdev->vma) - intel_unpin_fb_vma(ifbdev->vma, ifbdev->vma_flags); - - if (ifbdev->fb) - drm_framebuffer_remove(&ifbdev->fb->base); - - drm_client_release(&ifbdev->helper.client); - drm_fb_helper_unprepare(&ifbdev->helper); - kfree(ifbdev); -} - /* * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. * The core display code will have read out the current plane configuration, @@ -459,16 +458,6 @@ static void intel_fbdev_suspend_worker(struct work_struct *work) true); } -static void intel_fbdev_sync(struct intel_fbdev *ifbdev) -{ - if (!ifbdev->cookie) - return; - - /* Only serialises with all preceding async calls, hence +1 */ - async_synchronize_cookie(ifbdev->cookie + 1); - ifbdev->cookie = 0; -} - /* Suspends/resumes fbdev processing of incoming HPD events. When resuming HPD * processing, fbdev will perform a full connector reprobe if a hotplug event * was received while HPD was suspended. @@ -559,8 +548,6 @@ static int intel_fbdev_output_poll_changed(struct drm_device *dev) if (!ifbdev) return -EINVAL; - intel_fbdev_sync(ifbdev); - mutex_lock(&ifbdev->hpd_lock); send_hpd = !ifbdev->hpd_suspended; ifbdev->hpd_waiting = true; @@ -580,7 +567,6 @@ static int intel_fbdev_restore_mode(struct drm_i915_private *dev_priv) if (!ifbdev) return -EINVAL; - intel_fbdev_sync(ifbdev); if (!ifbdev->vma) return -ENOMEM; @@ -598,7 +584,20 @@ static int intel_fbdev_restore_mode(struct drm_i915_private *dev_priv) */ static void intel_fbdev_client_unregister(struct drm_client_dev *client) -{ } +{ + struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client); + struct drm_device *dev = fb_helper->dev; + struct pci_dev *pdev = to_pci_dev(dev->dev); + + if (fb_helper->info) { + vga_switcheroo_client_fb_set(pdev, NULL); + drm_fb_helper_unregister_info(fb_helper); + } else { + drm_fb_helper_unprepare(fb_helper); + drm_client_release(&fb_helper->client); + kfree(fb_helper); + } +} static int intel_fbdev_client_restore(struct drm_client_dev *client) { @@ -616,7 +615,31 @@ static int intel_fbdev_client_restore(struct drm_client_dev *client) static int intel_fbdev_client_hotplug(struct drm_client_dev *client) { - return intel_fbdev_output_poll_changed(client->dev); + struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client); + struct drm_device *dev = client->dev; + struct pci_dev *pdev = to_pci_dev(dev->dev); + int ret; + + if (dev->fb_helper) + return intel_fbdev_output_poll_changed(dev); + + ret = drm_fb_helper_init(dev, fb_helper); + if (ret) + goto err_drm_err; + + ret = drm_fb_helper_initial_config(fb_helper); + if (ret) + goto err_drm_fb_helper_fini; + + vga_switcheroo_client_fb_set(pdev, fb_helper->info); + + return 0; + +err_drm_fb_helper_fini: + drm_fb_helper_fini(fb_helper); +err_drm_err: + drm_err(dev, "Failed to setup i915 fbdev emulation (ret=%d)\n", ret); + return ret; } static const struct drm_client_funcs intel_fbdev_client_funcs = { @@ -626,22 +649,23 @@ static const struct drm_client_funcs intel_fbdev_client_funcs = { .hotplug = intel_fbdev_client_hotplug, }; -int intel_fbdev_init(struct drm_device *dev) +void intel_fbdev_setup(struct drm_i915_private *i915) { - struct drm_i915_private *dev_priv = to_i915(dev); + struct drm_device *dev = &i915->drm; struct intel_fbdev *ifbdev; int ret; - if (drm_WARN_ON(dev, !HAS_DISPLAY(dev_priv))) - return -ENODEV; + if (!HAS_DISPLAY(i915)) + return; ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL); if (!ifbdev) - return -ENOMEM; - - mutex_init(&ifbdev->hpd_lock); + return; drm_fb_helper_prepare(dev, &ifbdev->helper, 32, &intel_fb_helper_funcs); + i915->display.fbdev.fbdev = ifbdev; + INIT_WORK(&i915->display.fbdev.suspend_work, intel_fbdev_suspend_worker); + mutex_init(&ifbdev->hpd_lock); if (intel_fbdev_init_bios(dev, ifbdev)) ifbdev->helper.preferred_bpp = ifbdev->preferred_bpp; else @@ -649,68 +673,19 @@ int intel_fbdev_init(struct drm_device *dev) ret = drm_client_init(dev, &ifbdev->helper.client, "intel-fbdev", &intel_fbdev_client_funcs); - if (ret) + if (ret) { + drm_err(dev, "Failed to register client: %d\n", ret); goto err_drm_fb_helper_unprepare; + } - ret = drm_fb_helper_init(dev, &ifbdev->helper); - if (ret) - goto err_drm_client_release; - - dev_priv->display.fbdev.fbdev = ifbdev; - INIT_WORK(&dev_priv->display.fbdev.suspend_work, intel_fbdev_suspend_worker); + drm_client_register(&ifbdev->helper.client); - return 0; + return; -err_drm_client_release: - drm_client_release(&ifbdev->helper.client); err_drm_fb_helper_unprepare: drm_fb_helper_unprepare(&ifbdev->helper); + mutex_destroy(&ifbdev->hpd_lock); kfree(ifbdev); - return ret; -} - -static void intel_fbdev_initial_config(void *data, async_cookie_t cookie) -{ - struct intel_fbdev *ifbdev = data; - - /* Due to peculiar init order wrt to hpd handling this is separate. */ - if (drm_fb_helper_initial_config(&ifbdev->helper)) - intel_fbdev_unregister(to_i915(ifbdev->helper.dev)); -} - -void intel_fbdev_initial_config_async(struct drm_i915_private *dev_priv) -{ - struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev; - - if (!ifbdev) - return; - - ifbdev->cookie = async_schedule(intel_fbdev_initial_config, ifbdev); -} - -void intel_fbdev_unregister(struct drm_i915_private *dev_priv) -{ - struct intel_fbdev *ifbdev = dev_priv->display.fbdev.fbdev; - - if (!ifbdev) - return; - - intel_fbdev_set_suspend(&dev_priv->drm, FBINFO_STATE_SUSPENDED, true); - - if (!current_is_async()) - intel_fbdev_sync(ifbdev); - - drm_fb_helper_unregister_info(&ifbdev->helper); -} - -void intel_fbdev_fini(struct drm_i915_private *dev_priv) -{ - struct intel_fbdev *ifbdev = fetch_and_zero(&dev_priv->display.fbdev.fbdev); - - if (!ifbdev) - return; - - intel_fbdev_destroy(ifbdev); } struct intel_framebuffer *intel_fbdev_framebuffer(struct intel_fbdev *fbdev) |