LXR linux/drivers/pinctrl/aspeed/pinctrl-aspeed.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * Copyright (C) 2016 IBM Corp.
   4 */
   5
   6#ifndef PINCTRL_ASPEED
   7#define PINCTRL_ASPEED
   8
   9#include <linux/pinctrl/pinctrl.h>
  10#include <linux/pinctrl/pinmux.h>
  11#include <linux/pinctrl/pinconf.h>
  12#include <linux/pinctrl/pinconf-generic.h>
  13#include <linux/regmap.h>
  14
  15#include "pinmux-aspeed.h"
  16
  17/**
  18 * @param The pinconf parameter type
  19 * @pins The pin range this config struct covers, [low, high]
  20 * @reg The register housing the configuration bits
  21 * @mask The mask to select the bits of interest in @reg
  22 */
  23struct aspeed_pin_config {
  24        enum pin_config_param param;
  25        unsigned int pins[2];
  26        unsigned int reg;
  27        u32 mask;
  28};
  29
  30#define ASPEED_PINCTRL_PIN(name_) \
  31        [name_] = { \
  32                .number = name_, \
  33                .name = #name_, \
  34                .drv_data = (void *) &(PIN_SYM(name_)) \
  35        }
  36
  37#define ASPEED_SB_PINCONF(param_, pin0_, pin1_, reg_, bit_) { \
  38        .param = param_, \
  39        .pins = {pin0_, pin1_}, \
  40        .reg = reg_, \
  41        .mask = BIT_MASK(bit_) \
  42}
  43
  44#define ASPEED_PULL_DOWN_PINCONF(pin_, reg_, bit_) \
  45        ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_PULL_DOWN, pin_, pin_, reg_, bit_), \
  46        ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_DISABLE,   pin_, pin_, reg_, bit_)
  47
  48#define ASPEED_PULL_UP_PINCONF(pin_, reg_, bit_) \
  49        ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_PULL_UP, pin_, pin_, reg_, bit_), \
  50        ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_DISABLE, pin_, pin_, reg_, bit_)
  51/*
  52 * Aspeed pin configuration description.
  53 *
  54 * @param: pinconf configuration parameter
  55 * @arg: The supported argument for @param, or -1 if any value is supported
  56 * @val: The register value to write to configure @arg for @param
  57 * @mask: The bitfield mask for @val
  58 *
  59 * The map is to be used in conjunction with the configuration array supplied
  60 * by the driver implementation.
  61 */
  62struct aspeed_pin_config_map {
  63        enum pin_config_param param;
  64        s32 arg;
  65        u32 val;
  66        u32 mask;
  67};
  68
  69struct aspeed_pinctrl_data {
  70        struct regmap *scu;
  71
  72        const struct pinctrl_pin_desc *pins;
  73        const unsigned int npins;
  74
  75        const struct aspeed_pin_config *configs;
  76        const unsigned int nconfigs;
  77
  78        struct aspeed_pinmux_data pinmux;
  79
  80        const struct aspeed_pin_config_map *confmaps;
  81        const unsigned int nconfmaps;
  82};
  83
  84/* Aspeed pinctrl helpers */
  85int aspeed_pinctrl_get_groups_count(struct pinctrl_dev *pctldev);
  86const char *aspeed_pinctrl_get_group_name(struct pinctrl_dev *pctldev,
  87                unsigned int group);
  88int aspeed_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
  89                unsigned int group, const unsigned int **pins,
  90                unsigned int *npins);
  91void aspeed_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev,
  92                struct seq_file *s, unsigned int offset);
  93int aspeed_pinmux_get_fn_count(struct pinctrl_dev *pctldev);
  94const char *aspeed_pinmux_get_fn_name(struct pinctrl_dev *pctldev,
  95                unsigned int function);
  96int aspeed_pinmux_get_fn_groups(struct pinctrl_dev *pctldev,
  97                unsigned int function, const char * const **groups,
  98                unsigned int * const num_groups);
  99int aspeed_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function,
 100                unsigned int group);
 101int aspeed_gpio_request_enable(struct pinctrl_dev *pctldev,
 102                struct pinctrl_gpio_range *range,
 103                unsigned int offset);
 104int aspeed_pinctrl_probe(struct platform_device *pdev,
 105                struct pinctrl_desc *pdesc,
 106                struct aspeed_pinctrl_data *pdata);
 107int aspeed_pin_config_get(struct pinctrl_dev *pctldev, unsigned int offset,
 108                unsigned long *config);
 109int aspeed_pin_config_set(struct pinctrl_dev *pctldev, unsigned int offset,
 110                unsigned long *configs, unsigned int num_configs);
 111int aspeed_pin_config_group_get(struct pinctrl_dev *pctldev,
 112                unsigned int selector,
 113                unsigned long *config);
 114int aspeed_pin_config_group_set(struct pinctrl_dev *pctldev,
 115                unsigned int selector,
 116                unsigned long *configs,
 117                unsigned int num_configs);
 118
 119#endif /* PINCTRL_ASPEED */
 120