linux/drivers/gpu/drm/i915/intel_sbi.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2013-2021 Intel Corporation
 *
 * LPT/WPT IOSF sideband.
 */

#include "i915_drv.h"
#include "intel_sbi.h"
#include "i915_reg.h"

/* SBI access */
static int intel_sbi_rw(struct drm_i915_private *i915, u16 reg,
			enum intel_sbi_destination destination,
			u32 *val, bool is_read)
{ … }

u32 intel_sbi_read(struct drm_i915_private *i915, u16 reg,
		   enum intel_sbi_destination destination)
{ … }

void intel_sbi_write(struct drm_i915_private *i915, u16 reg, u32 value,
		     enum intel_sbi_destination destination)
{ … }