blob: e4db069f0db3f1fd27ed80eb84fc4544ea0831df [file] [log] [blame]
// 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);
drmm_mutex_init(&xe->drm, &xe->display.backlight.lock);
drmm_mutex_init(&xe->drm, &xe->display.audio.mutex);
drmm_mutex_init(&xe->drm, &xe->display.wm.wm_mutex);
drmm_mutex_init(&xe->drm, &xe->display.pps.mutex);
drmm_mutex_init(&xe->drm, &xe->display.hdcp.hdcp_mutex);
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);
}