1 files changed, 411 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_display.c b/drivers/gpu/drm/xe/xe_display.c
new file mode 100644
index 0000000000..6ec375c1c4
--- /dev/null
+++ b/drivers/gpu/drm/xe/xe_display.c
@@ -0,0 +1,411 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2023 Intel Corporation
+ */
+
+#include "xe_display.h"
+#include "regs/xe_regs.h"
+
+#include <linux/fb.h>
+
+#include <drm/drm_drv.h>
+#include <drm/drm_managed.h>
+#include <drm/xe_drm.h>
+
+#include "soc/intel_dram.h"
+#include "i915_drv.h"		/* FIXME: HAS_DISPLAY() depends on this */
+#include "intel_acpi.h"
+#include "intel_audio.h"
+#include "intel_bw.h"
+#include "intel_display.h"
+#include "intel_display_driver.h"
+#include "intel_display_irq.h"
+#include "intel_display_types.h"
+#include "intel_dmc.h"
+#include "intel_dp.h"
+#include "intel_fbdev.h"
+#include "intel_hdcp.h"
+#include "intel_hotplug.h"
+#include "intel_opregion.h"
+#include "xe_module.h"
+
+/* Xe device functions */
+
+static bool has_display(struct xe_device *xe)
+{
+	return HAS_DISPLAY(xe);
+}
+
+/**
+ * xe_display_driver_probe_defer - Detect if we need to wait for other drivers
+ *				   early on
+ * @pdev: PCI device
+ *
+ * Returns: true if probe needs to be deferred, false otherwise
+ */
+bool xe_display_driver_probe_defer(struct pci_dev *pdev)
+{
+	if (!xe_modparam.enable_display)
+		return 0;
+
+	return intel_display_driver_probe_defer(pdev);
+}
+
+static void xe_display_last_close(struct drm_device *dev)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	if (xe->info.enable_display)
+		intel_fbdev_restore_mode(to_xe_device(dev));
+}
+
+/**
+ * xe_display_driver_set_hooks - Add driver flags and hooks for display
+ * @driver: DRM device driver
+ *
+ * Set features and function hooks in @driver that are needed for driving the
+ * display IP. This sets the driver's capability of driving display, regardless
+ * if the device has it enabled
+ */
+void xe_display_driver_set_hooks(struct drm_driver *driver)
+{
+	if (!xe_modparam.enable_display)
+		return;
+
+	driver->driver_features |= DRIVER_MODESET | DRIVER_ATOMIC;
+	driver->lastclose = xe_display_last_close;
+}
+
+static void unset_display_features(struct xe_device *xe)
+{
+	xe->drm.driver_features &= ~(DRIVER_MODESET | DRIVER_ATOMIC);
+}
+
+static void display_destroy(struct drm_device *dev, void *dummy)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	destroy_workqueue(xe->display.hotplug.dp_wq);
+}
+
+/**
+ * xe_display_create - create display struct
+ * @xe: XE device instance
+ *
+ * Initialize all fields used by the display part.
+ *
+ * TODO: once everything can be inside a single struct, make the struct opaque
+ * to the rest of xe and return it to be xe->display.
+ *
+ * Returns: 0 on success
+ */
+int xe_display_create(struct xe_device *xe)
+{
+	int err;
+
+	spin_lock_init(&xe->display.fb_tracking.lock);
+
+	xe->display.hotplug.dp_wq = alloc_ordered_workqueue("xe-dp", 0);
+
+	drmm_mutex_init(&xe->drm, &xe->sb_lock);
+	xe->enabled_irq_mask = ~0;
+
+	err = drmm_add_action_or_reset(&xe->drm, display_destroy, NULL);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static void xe_display_fini_nommio(struct drm_device *dev, void *dummy)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	if (!xe->info.enable_display)
+		return;
+
+	intel_power_domains_cleanup(xe);
+}
+
+int xe_display_init_nommio(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return 0;
+
+	/* Fake uncore lock */
+	spin_lock_init(&xe->uncore.lock);
+
+	/* This must be called before any calls to HAS_PCH_* */
+	intel_detect_pch(xe);
+
+	return drmm_add_action_or_reset(&xe->drm, xe_display_fini_nommio, xe);
+}
+
+static void xe_display_fini_noirq(struct drm_device *dev, void *dummy)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	if (!xe->info.enable_display)
+		return;
+
+	intel_display_driver_remove_noirq(xe);
+	intel_power_domains_driver_remove(xe);
+}
+
+int xe_display_init_noirq(struct xe_device *xe)
+{
+	int err;
+
+	if (!xe->info.enable_display)
+		return 0;
+
+	intel_display_driver_early_probe(xe);
+
+	/* Early display init.. */
+	intel_opregion_setup(xe);
+
+	/*
+	 * Fill the dram structure to get the system dram info. This will be
+	 * used for memory latency calculation.
+	 */
+	intel_dram_detect(xe);
+
+	intel_bw_init_hw(xe);
+
+	intel_display_device_info_runtime_init(xe);
+
+	err = intel_display_driver_probe_noirq(xe);
+	if (err)
+		return err;
+
+	return drmm_add_action_or_reset(&xe->drm, xe_display_fini_noirq, NULL);
+}
+
+static void xe_display_fini_noaccel(struct drm_device *dev, void *dummy)
+{
+	struct xe_device *xe = to_xe_device(dev);
+
+	if (!xe->info.enable_display)
+		return;
+
+	intel_display_driver_remove_nogem(xe);
+}
+
+int xe_display_init_noaccel(struct xe_device *xe)
+{
+	int err;
+
+	if (!xe->info.enable_display)
+		return 0;
+
+	err = intel_display_driver_probe_nogem(xe);
+	if (err)
+		return err;
+
+	return drmm_add_action_or_reset(&xe->drm, xe_display_fini_noaccel, NULL);
+}
+
+int xe_display_init(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return 0;
+
+	return intel_display_driver_probe(xe);
+}
+
+void xe_display_fini(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	/* poll work can call into fbdev, hence clean that up afterwards */
+	intel_hpd_poll_fini(xe);
+	intel_fbdev_fini(xe);
+
+	intel_hdcp_component_fini(xe);
+	intel_audio_deinit(xe);
+}
+
+void xe_display_register(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	intel_display_driver_register(xe);
+	intel_register_dsm_handler();
+	intel_power_domains_enable(xe);
+}
+
+void xe_display_unregister(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	intel_unregister_dsm_handler();
+	intel_power_domains_disable(xe);
+	intel_display_driver_unregister(xe);
+}
+
+void xe_display_driver_remove(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	intel_display_driver_remove(xe);
+
+	intel_display_device_remove(xe);
+}
+
+/* IRQ-related functions */
+
+void xe_display_irq_handler(struct xe_device *xe, u32 master_ctl)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	if (master_ctl & DISPLAY_IRQ)
+		gen11_display_irq_handler(xe);
+}
+
+void xe_display_irq_enable(struct xe_device *xe, u32 gu_misc_iir)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	if (gu_misc_iir & GU_MISC_GSE)
+		intel_opregion_asle_intr(xe);
+}
+
+void xe_display_irq_reset(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	gen11_display_irq_reset(xe);
+}
+
+void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	if (gt->info.id == XE_GT0)
+		gen11_de_irq_postinstall(xe);
+}
+
+static void intel_suspend_encoders(struct xe_device *xe)
+{
+	struct drm_device *dev = &xe->drm;
+	struct intel_encoder *encoder;
+
+	if (has_display(xe))
+		return;
+
+	drm_modeset_lock_all(dev);
+	for_each_intel_encoder(dev, encoder)
+		if (encoder->suspend)
+			encoder->suspend(encoder);
+	drm_modeset_unlock_all(dev);
+}
+
+static bool suspend_to_idle(void)
+{
+#if IS_ENABLED(CONFIG_ACPI_SLEEP)
+	if (acpi_target_system_state() < ACPI_STATE_S3)
+		return true;
+#endif
+	return false;
+}
+
+void xe_display_pm_suspend(struct xe_device *xe)
+{
+	bool s2idle = suspend_to_idle();
+	if (!xe->info.enable_display)
+		return;
+
+	/*
+	 * We do a lot of poking in a lot of registers, make sure they work
+	 * properly.
+	 */
+	intel_power_domains_disable(xe);
+	if (has_display(xe))
+		drm_kms_helper_poll_disable(&xe->drm);
+
+	intel_display_driver_suspend(xe);
+
+	intel_dp_mst_suspend(xe);
+
+	intel_hpd_cancel_work(xe);
+
+	intel_suspend_encoders(xe);
+
+	intel_opregion_suspend(xe, s2idle ? PCI_D1 : PCI_D3cold);
+
+	intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_SUSPENDED, true);
+
+	intel_dmc_suspend(xe);
+}
+
+void xe_display_pm_suspend_late(struct xe_device *xe)
+{
+	bool s2idle = suspend_to_idle();
+	if (!xe->info.enable_display)
+		return;
+
+	intel_power_domains_suspend(xe, s2idle);
+
+	intel_display_power_suspend_late(xe);
+}
+
+void xe_display_pm_resume_early(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	intel_display_power_resume_early(xe);
+
+	intel_power_domains_resume(xe);
+}
+
+void xe_display_pm_resume(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		return;
+
+	intel_dmc_resume(xe);
+
+	if (has_display(xe))
+		drm_mode_config_reset(&xe->drm);
+
+	intel_display_driver_init_hw(xe);
+	intel_hpd_init(xe);
+
+	/* MST sideband requires HPD interrupts enabled */
+	intel_dp_mst_resume(xe);
+	intel_display_driver_resume(xe);
+
+	intel_hpd_poll_disable(xe);
+	if (has_display(xe))
+		drm_kms_helper_poll_enable(&xe->drm);
+
+	intel_opregion_resume(xe);
+
+	intel_fbdev_set_suspend(&xe->drm, FBINFO_STATE_RUNNING, false);
+
+	intel_power_domains_enable(xe);
+}
+
+void xe_display_probe(struct xe_device *xe)
+{
+	if (!xe->info.enable_display)
+		goto no_display;
+
+	intel_display_device_probe(xe);
+
+	if (has_display(xe))
+		return;
+
+no_display:
+	xe->info.enable_display = false;
+	unset_display_features(xe);
+}