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 */ 23 struct 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 */ 62 struct aspeed_pin_config_map { 63 enum pin_config_param param; 64 s32 arg; 65 u32 val; 66 u32 mask; 67 }; 68 69 struct 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 */ 85 int aspeed_pinctrl_get_groups_count(struct pinctrl_dev *pctldev); 86 const char *aspeed_pinctrl_get_group_name(struct pinctrl_dev *pctldev, 87 unsigned int group); 88 int aspeed_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, 89 unsigned int group, const unsigned int **pins, 90 unsigned int *npins); 91 void aspeed_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, 92 struct seq_file *s, unsigned int offset); 93 int aspeed_pinmux_get_fn_count(struct pinctrl_dev *pctldev); 94 const char *aspeed_pinmux_get_fn_name(struct pinctrl_dev *pctldev, 95 unsigned int function); 96 int aspeed_pinmux_get_fn_groups(struct pinctrl_dev *pctldev, 97 unsigned int function, const char * const **groups, 98 unsigned int * const num_groups); 99 int aspeed_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function, 100 unsigned int group); 101 int aspeed_gpio_request_enable(struct pinctrl_dev *pctldev, 102 struct pinctrl_gpio_range *range, 103 unsigned int offset); 104 int aspeed_pinctrl_probe(struct platform_device *pdev, 105 struct pinctrl_desc *pdesc, 106 struct aspeed_pinctrl_data *pdata); 107 int aspeed_pin_config_get(struct pinctrl_dev *pctldev, unsigned int offset, 108 unsigned long *config); 109 int aspeed_pin_config_set(struct pinctrl_dev *pctldev, unsigned int offset, 110 unsigned long *configs, unsigned int num_configs); 111 int aspeed_pin_config_group_get(struct pinctrl_dev *pctldev, 112 unsigned int selector, 113 unsigned long *config); 114 int 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