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drm/i915/display: add intel_display_run_as_guest()

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Add intel_display_utils.c for display utilities that need more than a
header.

Start off with intel_display_run_as_guest(). The implementation is
intentional duplication of the i915_utils.h i915_run_as_guest(), with
the idea that it's small enough to not matter.

Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://patch.msgid.link/469f9c41e0c3e3099314a3cf1a7671bf36ec8ffd.1761146196.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2025-10-22 18:17:11 +03:00
parent 7c15791d19
commit cd81a70d76
5 changed files with 28 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/drm/i915/Makefile
View File

@ -256,6 +256,7 @@ i915-y += \
display/intel_display_rpm.o \
display/intel_display_rps.o \
display/intel_display_snapshot.o \
display/intel_display_utils.o \
display/intel_display_wa.o \
display/intel_dmc.o \
display/intel_dmc_wl.o \

18
drivers/gpu/drm/i915/display/intel_display_utils.c Normal file
View File

@ -0,0 +1,18 @@
// SPDX-License-Identifier: MIT
/* Copyright © 2025 Intel Corporation */
#ifdef CONFIG_X86
#include <asm/hypervisor.h>
#endif
#include "intel_display_utils.h"
bool intel_display_run_as_guest(struct intel_display *display)
{
#if IS_ENABLED(CONFIG_X86)
return !hypervisor_is_type(X86_HYPER_NATIVE);
#else
/* Not supported yet */
return false;
#endif
}

6
drivers/gpu/drm/i915/display/intel_display_utils.h
View File

@ -4,7 +4,13 @@
#ifndef __INTEL_DISPLAY_UTILS__
#define __INTEL_DISPLAY_UTILS__
#include <linux/types.h>
struct intel_display;
#define KHz(x) (1000 * (x))
#define MHz(x) KHz(1000 * (x))
bool intel_display_run_as_guest(struct intel_display *display);
#endif /* __INTEL_DISPLAY_UTILS__ */

4
drivers/gpu/drm/i915/display/intel_pch.c
View File

@ -5,8 +5,8 @@
#include <drm/drm_print.h>
#include "i915_utils.h"
#include "intel_display_core.h"
#include "intel_display_utils.h"
#include "intel_pch.h"
#define INTEL_PCH_DEVICE_ID_MASK 0xff80
@ -328,7 +328,7 @@ void intel_pch_detect(struct intel_display *display)
"Display disabled, reverting to NOP PCH\n");
display->pch_type = PCH_NOP;
} else if (!pch) {
if (i915_run_as_guest() && HAS_DISPLAY(display)) {
if (intel_display_run_as_guest(display) && HAS_DISPLAY(display)) {
intel_virt_detect_pch(display, &id, &pch_type);
display->pch_type = pch_type;
} else {

1
drivers/gpu/drm/xe/Makefile
View File

@ -254,6 +254,7 @@ xe-$(CONFIG_DRM_XE_DISPLAY) += \
i915-display/intel_display_power_map.o \
i915-display/intel_display_power_well.o \
i915-display/intel_display_trace.o \
i915-display/intel_display_utils.o \
i915-display/intel_display_wa.o \
i915-display/intel_dkl_phy.o \
i915-display/intel_dmc.o \