551 lines
12 KiB
C
551 lines
12 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2023 Intel Corporation
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*/
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#include "xe_display.h"
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#include "regs/xe_irq_regs.h"
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#include <linux/fb.h>
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#include <drm/drm_client.h>
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#include <drm/drm_client_event.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_probe_helper.h>
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#include <uapi/drm/xe_drm.h>
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#include "soc/intel_dram.h"
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#include "intel_acpi.h"
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#include "intel_audio.h"
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#include "intel_bw.h"
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#include "intel_display.h"
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#include "intel_display_driver.h"
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#include "intel_display_irq.h"
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#include "intel_display_types.h"
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#include "intel_dmc.h"
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#include "intel_dmc_wl.h"
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#include "intel_dp.h"
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#include "intel_encoder.h"
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#include "intel_fbdev.h"
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#include "intel_hdcp.h"
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#include "intel_hotplug.h"
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#include "intel_opregion.h"
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#include "skl_watermark.h"
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#include "xe_module.h"
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/* Xe device functions */
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static bool has_display(struct xe_device *xe)
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{
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return HAS_DISPLAY(&xe->display);
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}
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/**
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* xe_display_driver_probe_defer - Detect if we need to wait for other drivers
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* early on
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* @pdev: PCI device
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*
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* Returns: true if probe needs to be deferred, false otherwise
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*/
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bool xe_display_driver_probe_defer(struct pci_dev *pdev)
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{
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if (!xe_modparam.probe_display)
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return 0;
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return intel_display_driver_probe_defer(pdev);
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}
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/**
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* xe_display_driver_set_hooks - Add driver flags and hooks for display
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* @driver: DRM device driver
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*
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* Set features and function hooks in @driver that are needed for driving the
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* display IP. This sets the driver's capability of driving display, regardless
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* if the device has it enabled
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*/
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void xe_display_driver_set_hooks(struct drm_driver *driver)
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{
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if (!xe_modparam.probe_display)
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return;
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#ifdef CONFIG_DRM_FBDEV_EMULATION
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driver->fbdev_probe = intel_fbdev_driver_fbdev_probe;
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#endif
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driver->driver_features |= DRIVER_MODESET | DRIVER_ATOMIC;
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}
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static void unset_display_features(struct xe_device *xe)
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{
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xe->drm.driver_features &= ~(DRIVER_MODESET | DRIVER_ATOMIC);
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}
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static void display_destroy(struct drm_device *dev, void *dummy)
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{
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struct xe_device *xe = to_xe_device(dev);
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destroy_workqueue(xe->display.hotplug.dp_wq);
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}
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/**
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* xe_display_create - create display struct
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* @xe: XE device instance
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*
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* Initialize all fields used by the display part.
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*
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* TODO: once everything can be inside a single struct, make the struct opaque
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* to the rest of xe and return it to be xe->display.
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*
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* Returns: 0 on success
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*/
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int xe_display_create(struct xe_device *xe)
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{
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spin_lock_init(&xe->display.fb_tracking.lock);
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xe->display.hotplug.dp_wq = alloc_ordered_workqueue("xe-dp", 0);
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if (!xe->display.hotplug.dp_wq)
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return -ENOMEM;
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return drmm_add_action_or_reset(&xe->drm, display_destroy, NULL);
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}
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static void xe_display_fini_early(void *arg)
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{
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struct xe_device *xe = arg;
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_display_driver_remove_nogem(display);
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intel_display_driver_remove_noirq(display);
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intel_opregion_cleanup(display);
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intel_power_domains_cleanup(display);
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}
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int xe_display_init_early(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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int err;
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if (!xe->info.probe_display)
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return 0;
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/* Fake uncore lock */
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spin_lock_init(&xe->uncore.lock);
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/* This must be called before any calls to HAS_PCH_* */
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intel_detect_pch(xe);
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intel_display_driver_early_probe(display);
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/* Early display init.. */
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intel_opregion_setup(display);
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/*
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* Fill the dram structure to get the system dram info. This will be
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* used for memory latency calculation.
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*/
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intel_dram_detect(xe);
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intel_bw_init_hw(xe);
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intel_display_device_info_runtime_init(display);
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err = intel_display_driver_probe_noirq(display);
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if (err)
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goto err_opregion;
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err = intel_display_driver_probe_nogem(display);
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if (err)
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goto err_noirq;
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return devm_add_action_or_reset(xe->drm.dev, xe_display_fini_early, xe);
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err_noirq:
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intel_display_driver_remove_noirq(display);
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intel_power_domains_cleanup(display);
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err_opregion:
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intel_opregion_cleanup(display);
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return err;
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}
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static void xe_display_fini(void *arg)
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{
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struct xe_device *xe = arg;
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struct intel_display *display = &xe->display;
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intel_hpd_poll_fini(xe);
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intel_hdcp_component_fini(display);
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intel_audio_deinit(display);
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intel_display_driver_remove(display);
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}
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int xe_display_init(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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int err;
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if (!xe->info.probe_display)
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return 0;
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err = intel_display_driver_probe(display);
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if (err)
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return err;
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return devm_add_action_or_reset(xe->drm.dev, xe_display_fini, xe);
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}
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void xe_display_register(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_display_driver_register(display);
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intel_power_domains_enable(display);
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}
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void xe_display_unregister(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_power_domains_disable(display);
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intel_display_driver_unregister(display);
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}
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/* IRQ-related functions */
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void xe_display_irq_handler(struct xe_device *xe, u32 master_ctl)
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{
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if (!xe->info.probe_display)
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return;
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if (master_ctl & DISPLAY_IRQ)
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gen11_display_irq_handler(xe);
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}
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void xe_display_irq_enable(struct xe_device *xe, u32 gu_misc_iir)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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if (gu_misc_iir & GU_MISC_GSE)
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intel_opregion_asle_intr(display);
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}
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void xe_display_irq_reset(struct xe_device *xe)
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{
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if (!xe->info.probe_display)
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return;
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gen11_display_irq_reset(xe);
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}
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void xe_display_irq_postinstall(struct xe_device *xe, struct xe_gt *gt)
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{
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if (!xe->info.probe_display)
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return;
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if (gt->info.id == XE_GT0)
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gen11_de_irq_postinstall(xe);
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}
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static bool suspend_to_idle(void)
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{
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#if IS_ENABLED(CONFIG_ACPI_SLEEP)
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if (acpi_target_system_state() < ACPI_STATE_S3)
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return true;
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#endif
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return false;
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}
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static void xe_display_flush_cleanup_work(struct xe_device *xe)
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{
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struct intel_crtc *crtc;
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for_each_intel_crtc(&xe->drm, crtc) {
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struct drm_crtc_commit *commit;
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spin_lock(&crtc->base.commit_lock);
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commit = list_first_entry_or_null(&crtc->base.commit_list,
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struct drm_crtc_commit, commit_entry);
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if (commit)
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drm_crtc_commit_get(commit);
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spin_unlock(&crtc->base.commit_lock);
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if (commit) {
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wait_for_completion(&commit->cleanup_done);
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drm_crtc_commit_put(commit);
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}
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}
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}
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static void xe_display_enable_d3cold(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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/*
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* We do a lot of poking in a lot of registers, make sure they work
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* properly.
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*/
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intel_power_domains_disable(display);
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xe_display_flush_cleanup_work(xe);
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intel_opregion_suspend(display, PCI_D3cold);
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intel_dmc_suspend(display);
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if (has_display(xe))
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intel_hpd_poll_enable(xe);
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}
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static void xe_display_disable_d3cold(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_dmc_resume(display);
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if (has_display(xe))
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drm_mode_config_reset(&xe->drm);
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intel_display_driver_init_hw(display);
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intel_hpd_init(xe);
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if (has_display(xe))
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intel_hpd_poll_disable(xe);
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intel_opregion_resume(display);
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intel_power_domains_enable(display);
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}
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void xe_display_pm_suspend(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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bool s2idle = suspend_to_idle();
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if (!xe->info.probe_display)
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return;
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/*
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* We do a lot of poking in a lot of registers, make sure they work
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* properly.
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*/
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intel_power_domains_disable(display);
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drm_client_dev_suspend(&xe->drm, false);
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if (has_display(xe)) {
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drm_kms_helper_poll_disable(&xe->drm);
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intel_display_driver_disable_user_access(display);
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intel_display_driver_suspend(display);
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}
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xe_display_flush_cleanup_work(xe);
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intel_hpd_cancel_work(xe);
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if (has_display(xe)) {
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intel_display_driver_suspend_access(display);
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intel_encoder_suspend_all(&xe->display);
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}
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intel_opregion_suspend(display, s2idle ? PCI_D1 : PCI_D3cold);
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intel_dmc_suspend(display);
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}
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void xe_display_pm_shutdown(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_power_domains_disable(display);
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drm_client_dev_suspend(&xe->drm, false);
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if (has_display(xe)) {
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drm_kms_helper_poll_disable(&xe->drm);
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intel_display_driver_disable_user_access(display);
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intel_display_driver_suspend(display);
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}
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xe_display_flush_cleanup_work(xe);
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intel_dp_mst_suspend(display);
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intel_hpd_cancel_work(xe);
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if (has_display(xe))
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intel_display_driver_suspend_access(display);
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intel_encoder_suspend_all(display);
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intel_encoder_shutdown_all(display);
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intel_opregion_suspend(display, PCI_D3cold);
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intel_dmc_suspend(display);
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}
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void xe_display_pm_runtime_suspend(struct xe_device *xe)
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{
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if (!xe->info.probe_display)
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return;
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if (xe->d3cold.allowed) {
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xe_display_enable_d3cold(xe);
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return;
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}
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intel_hpd_poll_enable(xe);
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}
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void xe_display_pm_suspend_late(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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bool s2idle = suspend_to_idle();
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if (!xe->info.probe_display)
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return;
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intel_display_power_suspend_late(display, s2idle);
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}
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void xe_display_pm_runtime_suspend_late(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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if (xe->d3cold.allowed)
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xe_display_pm_suspend_late(xe);
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/*
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* If xe_display_pm_suspend_late() is not called, it is likely
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* that we will be on dynamic DC states with DMC wakelock enabled. We
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* need to flush the release work in that case.
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*/
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intel_dmc_wl_flush_release_work(display);
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}
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void xe_display_pm_shutdown_late(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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/*
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* The only requirement is to reboot with display DC states disabled,
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* for now leaving all display power wells in the INIT power domain
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* enabled.
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*/
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intel_power_domains_driver_remove(display);
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}
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void xe_display_pm_resume_early(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_display_power_resume_early(display);
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}
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void xe_display_pm_resume(struct xe_device *xe)
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{
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struct intel_display *display = &xe->display;
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if (!xe->info.probe_display)
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return;
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intel_dmc_resume(display);
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if (has_display(xe))
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drm_mode_config_reset(&xe->drm);
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intel_display_driver_init_hw(display);
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if (has_display(xe))
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intel_display_driver_resume_access(display);
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intel_hpd_init(xe);
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if (has_display(xe)) {
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intel_display_driver_resume(display);
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drm_kms_helper_poll_enable(&xe->drm);
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intel_display_driver_enable_user_access(display);
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}
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if (has_display(xe))
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intel_hpd_poll_disable(xe);
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intel_opregion_resume(display);
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drm_client_dev_resume(&xe->drm, false);
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intel_power_domains_enable(display);
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}
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void xe_display_pm_runtime_resume(struct xe_device *xe)
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{
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if (!xe->info.probe_display)
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return;
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if (xe->d3cold.allowed) {
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xe_display_disable_d3cold(xe);
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return;
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}
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intel_hpd_init(xe);
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intel_hpd_poll_disable(xe);
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skl_watermark_ipc_update(xe);
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}
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static void display_device_remove(struct drm_device *dev, void *arg)
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{
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struct intel_display *display = arg;
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intel_display_device_remove(display);
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}
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int xe_display_probe(struct xe_device *xe)
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{
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struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
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struct intel_display *display;
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int err;
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if (!xe->info.probe_display)
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goto no_display;
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display = intel_display_device_probe(pdev);
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err = drmm_add_action_or_reset(&xe->drm, display_device_remove, display);
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if (err)
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return err;
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if (has_display(xe))
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return 0;
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no_display:
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xe->info.probe_display = false;
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unset_display_features(xe);
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return 0;
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}
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