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drm/i915: abstraction for iosf to compile on all archs

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The asm/iosf_mbi.h header is x86-only. Let's make IOSF_MBI kconfig
selection conditional to x86 and provide a header with stubs for other
architectures. This helps getting i915 available for other
architectures in future.

Signed-off-by: Mullati, Siva <siva.mullati@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211022192756.1228354-1-siva.mullati@intel.com
This commit is contained in:
Mullati, Siva 2021-10-23 00:57:56 +05:30 committed by Lucas De Marchi
parent fed98c16f1
commit f0e204e0d3
4 changed files with 45 additions and 4 deletions
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2
drivers/gpu/drm/i915/Kconfig
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@ -21,7 +21,7 @@ config DRM_I915
select ACPI_VIDEO if ACPI
select ACPI_BUTTON if ACPI
select SYNC_FILE
select IOSF_MBI
select IOSF_MBI if X86
select CRC32
select SND_HDA_I915 if SND_HDA_CORE
select CEC_CORE if CEC_NOTIFIER

42
drivers/gpu/drm/i915/i915_iosf_mbi.h Normal file
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@ -0,0 +1,42 @@
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2021 Intel Corporation
*/
#ifndef __I915_IOSF_MBI_H__
#define __I915_IOSF_MBI_H__
#if IS_ENABLED(CONFIG_IOSF_MBI)
#include <asm/iosf_mbi.h>
#else
/* Stubs to compile for all non-x86 archs */
#define MBI_PMIC_BUS_ACCESS_BEGIN 1
#define MBI_PMIC_BUS_ACCESS_END 2
struct notifier_block;
static inline void iosf_mbi_punit_acquire(void) {}
static inline void iosf_mbi_punit_release(void) {}
static inline void iosf_mbi_assert_punit_acquired(void) {}
static inline
int iosf_mbi_register_pmic_bus_access_notifier(struct notifier_block *nb)
{
return 0;
}
static inline int
iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(struct notifier_block *nb)
{
return 0;
}
static inline
int iosf_mbi_unregister_pmic_bus_access_notifier(struct notifier_block *nb)
{
return 0;
}
#endif
#endif /* __I915_IOSF_MBI_H__ */

2
drivers/gpu/drm/i915/intel_uncore.c
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@ -22,11 +22,11 @@
*/
#include <linux/pm_runtime.h>
#include <asm/iosf_mbi.h>
#include "gt/intel_lrc_reg.h" /* for shadow reg list */
#include "i915_drv.h"
#include "i915_iosf_mbi.h"
#include "i915_trace.h"
#include "i915_vgpu.h"
#include "intel_pm.h"

3
drivers/gpu/drm/i915/vlv_sideband.c
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@ -3,9 +3,8 @@
* Copyright © 2013-2021 Intel Corporation
*/
#include <asm/iosf_mbi.h>
#include "i915_drv.h"
#include "i915_iosf_mbi.h"
#include "vlv_sideband.h"
/*