linux/drivers/gpu/drm/i915/display/intel_dkl_phy.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2022 Intel Corporation
 */

#include "i915_drv.h"

#include "intel_de.h"
#include "intel_display.h"
#include "intel_dkl_phy.h"
#include "intel_dkl_phy_regs.h"

/**
 * intel_dkl_phy_init - initialize Dekel PHY
 * @i915: i915 device instance
 */
void intel_dkl_phy_init(struct drm_i915_private *i915)
{ … }

static void
dkl_phy_set_hip_idx(struct drm_i915_private *i915, struct intel_dkl_phy_reg reg)
{ … }

/**
 * intel_dkl_phy_read - read a Dekel PHY register
 * @i915: i915 device instance
 * @reg: Dekel PHY register
 *
 * Read the @reg Dekel PHY register.
 *
 * Returns the read value.
 */
u32
intel_dkl_phy_read(struct drm_i915_private *i915, struct intel_dkl_phy_reg reg)
{ … }

/**
 * intel_dkl_phy_write - write a Dekel PHY register
 * @i915: i915 device instance
 * @reg: Dekel PHY register
 * @val: value to write
 *
 * Write @val to the @reg Dekel PHY register.
 */
void
intel_dkl_phy_write(struct drm_i915_private *i915, struct intel_dkl_phy_reg reg, u32 val)
{ … }

/**
 * intel_dkl_phy_rmw - read-modify-write a Dekel PHY register
 * @i915: i915 device instance
 * @reg: Dekel PHY register
 * @clear: mask to clear
 * @set: mask to set
 *
 * Read the @reg Dekel PHY register, clearing then setting the @clear/@set bits in it, and writing
 * this value back to the register if the value differs from the read one.
 */
void
intel_dkl_phy_rmw(struct drm_i915_private *i915, struct intel_dkl_phy_reg reg, u32 clear, u32 set)
{ … }

/**
 * intel_dkl_phy_posting_read - do a posting read from a Dekel PHY register
 * @i915: i915 device instance
 * @reg: Dekel PHY register
 *
 * Read the @reg Dekel PHY register without returning the read value.
 */
void
intel_dkl_phy_posting_read(struct drm_i915_private *i915, struct intel_dkl_phy_reg reg)
{ … }