cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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reset-syscfg.h (2158B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * Copyright (C) 2013 STMicroelectronics (R&D) Limited
      4 * Author: Stephen Gallimore <stephen.gallimore@st.com>
      5 */
      6#ifndef __STI_RESET_SYSCFG_H
      7#define __STI_RESET_SYSCFG_H
      8
      9#include <linux/device.h>
     10#include <linux/regmap.h>
     11#include <linux/reset-controller.h>
     12
     13/**
     14 * Reset channel description for a system configuration register based
     15 * reset controller.
     16 *
     17 * @compatible: Compatible string of the syscon regmap containing this
     18 *              channel's control and ack (status) bits.
     19 * @reset: Regmap field description of the channel's reset bit.
     20 * @ack: Regmap field description of the channel's acknowledge bit.
     21 */
     22struct syscfg_reset_channel_data {
     23	const char *compatible;
     24	struct reg_field reset;
     25	struct reg_field ack;
     26};
     27
     28#define _SYSCFG_RST_CH(_c, _rr, _rb, _ar, _ab)		\
     29	{ .compatible	= _c,				\
     30	  .reset	= REG_FIELD(_rr, _rb, _rb),	\
     31	  .ack		= REG_FIELD(_ar, _ab, _ab), }
     32
     33#define _SYSCFG_RST_CH_NO_ACK(_c, _rr, _rb)		\
     34	{ .compatible	= _c,			\
     35	  .reset	= REG_FIELD(_rr, _rb, _rb), }
     36
     37/**
     38 * Description of a system configuration register based reset controller.
     39 *
     40 * @wait_for_ack: The controller will wait for reset assert and de-assert to
     41 *                be "ack'd" in a channel's ack field.
     42 * @active_low: Are the resets in this controller active low, i.e. clearing
     43 *              the reset bit puts the hardware into reset.
     44 * @nr_channels: The number of reset channels in this controller.
     45 * @channels: An array of reset channel descriptions.
     46 */
     47struct syscfg_reset_controller_data {
     48	bool wait_for_ack;
     49	bool active_low;
     50	int nr_channels;
     51	const struct syscfg_reset_channel_data *channels;
     52};
     53
     54/**
     55 * syscfg_reset_probe(): platform device probe function used by syscfg
     56 *                       reset controller drivers. This registers a reset
     57 *                       controller configured by the OF match data for
     58 *                       the compatible device which should be of type
     59 *                       "struct syscfg_reset_controller_data".
     60 *
     61 * @pdev: platform device
     62 */
     63int syscfg_reset_probe(struct platform_device *pdev);
     64
     65#endif /* __STI_RESET_SYSCFG_H */