static int platform_probe(struct platform_device *dev)
{
struct backlight_properties props;
int ret;
mutex_init(&dev_priv.mutex);
INIT_DELAYED_WORK(&dev_priv.work, brightness_work);
ret = lp8550_probe();
if (ret)
return ret;
ret = lp8550_save();
if (ret)
return ret;
memset(&props, 0, sizeof(struct backlight_properties));
props.max_brightness = 255;
props.type = BACKLIGHT_FIRMWARE;
props.power = 0; /* Power is on */
backlight_device = backlight_device_register("mba6x_backlight",
NULL, NULL,
&backlight_ops, &props);
if (IS_ERR(backlight_device)) {
pr_err("mba6x_bl: Failed to register backlight device\n");
return PTR_ERR(backlight_device);
}
backlight_device->props.brightness = INIT_BRIGHTNESS;
backlight_update_status(backlight_device);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 2, 0)
acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
#else
acpi_video_dmi_promote_vendor();
#endif
acpi_video_unregister();
return 0;
}
int i915_driver_unload(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int ret;
ret = i915_gem_suspend(dev);
if (ret) {
DRM_ERROR("failed to idle hardware: %d\n", ret);
return ret;
}
intel_power_domains_fini(dev_priv);
intel_gpu_ips_teardown();
i915_teardown_sysfs(dev);
WARN_ON(unregister_oom_notifier(&dev_priv->mm.oom_notifier));
unregister_shrinker(&dev_priv->mm.shrinker);
io_mapping_free(dev_priv->gtt.mappable);
arch_phys_wc_del(dev_priv->gtt.mtrr);
acpi_video_unregister();
if (drm_core_check_feature(dev, DRIVER_MODESET))
intel_fbdev_fini(dev);
drm_vblank_cleanup(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
intel_modeset_cleanup(dev);
/*
* free the memory space allocated for the child device
* config parsed from VBT
*/
if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
kfree(dev_priv->vbt.child_dev);
dev_priv->vbt.child_dev = NULL;
dev_priv->vbt.child_dev_num = 0;
}
vga_switcheroo_unregister_client(dev->pdev);
vga_client_register(dev->pdev, NULL, NULL, NULL);
}
/* Free error state after interrupts are fully disabled. */
del_timer_sync(&dev_priv->gpu_error.hangcheck_timer);
cancel_work_sync(&dev_priv->gpu_error.work);
i915_destroy_error_state(dev);
if (dev->pdev->msi_enabled)
pci_disable_msi(dev->pdev);
intel_opregion_fini(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
/* Flush any outstanding unpin_work. */
flush_workqueue(dev_priv->wq);
mutex_lock(&dev->struct_mutex);
i915_gem_cleanup_ringbuffer(dev);
i915_gem_context_fini(dev);
mutex_unlock(&dev->struct_mutex);
i915_gem_cleanup_stolen(dev);
}
intel_teardown_gmbus(dev);
intel_teardown_mchbar(dev);
destroy_workqueue(dev_priv->dp_wq);
destroy_workqueue(dev_priv->wq);
pm_qos_remove_request(&dev_priv->pm_qos);
i915_global_gtt_cleanup(dev);
intel_uncore_fini(dev);
if (dev_priv->regs != NULL)
pci_iounmap(dev->pdev, dev_priv->regs);
if (dev_priv->slab)
kmem_cache_destroy(dev_priv->slab);
pci_dev_put(dev_priv->bridge_dev);
kfree(dev_priv);
return 0;
}
static int __devinit gmux_probe(struct pnp_dev *pnp,
const struct pnp_device_id *id)
{
struct apple_gmux_data *gmux_data;
struct resource *res;
struct backlight_properties props;
struct backlight_device *bdev;
u8 ver_major, ver_minor, ver_release;
int ret = -ENXIO;
gmux_data = kzalloc(sizeof(*gmux_data), GFP_KERNEL);
if (!gmux_data)
return -ENOMEM;
pnp_set_drvdata(pnp, gmux_data);
res = pnp_get_resource(pnp, IORESOURCE_IO, 0);
if (!res) {
pr_err("Failed to find gmux I/O resource\n");
goto err_free;
}
gmux_data->iostart = res->start;
gmux_data->iolen = res->end - res->start;
if (gmux_data->iolen < GMUX_MIN_IO_LEN) {
pr_err("gmux I/O region too small (%lu < %u)\n",
gmux_data->iolen, GMUX_MIN_IO_LEN);
goto err_free;
}
if (!request_region(gmux_data->iostart, gmux_data->iolen,
"Apple gmux")) {
pr_err("gmux I/O already in use\n");
goto err_free;
}
/*
* On some machines the gmux is in ACPI even thought the machine
* doesn't really have a gmux. Check for invalid version information
* to detect this.
*/
ver_major = gmux_read8(gmux_data, GMUX_PORT_VERSION_MAJOR);
ver_minor = gmux_read8(gmux_data, GMUX_PORT_VERSION_MINOR);
ver_release = gmux_read8(gmux_data, GMUX_PORT_VERSION_RELEASE);
if (ver_major == 0xff && ver_minor == 0xff && ver_release == 0xff) {
pr_info("gmux device not present\n");
ret = -ENODEV;
goto err_release;
}
pr_info("Found gmux version %d.%d.%d\n", ver_major, ver_minor,
ver_release);
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = gmux_read32(gmux_data, GMUX_PORT_MAX_BRIGHTNESS);
/*
* Currently it's assumed that the maximum brightness is less than
* 2^24 for compatibility with old gmux versions. Cap the max
* brightness at this value, but print a warning if the hardware
* reports something higher so that it can be fixed.
*/
if (WARN_ON(props.max_brightness > GMUX_MAX_BRIGHTNESS))
props.max_brightness = GMUX_MAX_BRIGHTNESS;
bdev = backlight_device_register("gmux_backlight", &pnp->dev,
gmux_data, &gmux_bl_ops, &props);
if (IS_ERR(bdev)) {
ret = PTR_ERR(bdev);
goto err_release;
}
gmux_data->bdev = bdev;
bdev->props.brightness = gmux_get_brightness(bdev);
backlight_update_status(bdev);
/*
* The backlight situation on Macs is complicated. If the gmux is
* present it's the best choice, because it always works for
* backlight control and supports more levels than other options.
* Disable the other backlight choices.
*/
acpi_video_dmi_promote_vendor();
#ifdef CONFIG_ACPI_VIDEO
acpi_video_unregister();
#endif
apple_bl_unregister();
return 0;
err_release:
release_region(gmux_data->iostart, gmux_data->iolen);
err_free:
kfree(gmux_data);
return ret;
}
static void poulsbo_remove(struct pci_dev *pdev)
{
acpi_video_unregister();
}
