drivers/pinctrl/starfive/pinctrl-starfive.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Pinctrl / GPIO driver for StarFive JH7110 SoC
   4  *
   5  * Copyright (C) 2022 Shanghai StarFive Technology Co., Ltd.
   6  */
   7
   8 #ifndef __DRIVERS_PINCTRL_STARFIVE_H
   9 #define __DRIVERS_PINCTRL_STARFIVE_H
  10
  11 #include <linux/pinctrl/pinconf-generic.h>
  12 #include <linux/pinctrl/pinmux.h>
  13
  14 #define MAX_GPIO                                64
  15
  16 #define STARFIVE_PINS_SIZE                      4
  17
  18 #define STARFIVE_USE_SCU                        BIT(0)
  19
  20 struct platform_device;
  21
  22 extern const struct pinmux_ops starfive_pmx_ops;
  23
  24 struct starfive_pin_config {
  25         unsigned long io_config;
  26         u32 pinmux_func;
  27         u32 gpio_num;
  28         u32 gpio_dout;
  29         u32 gpio_doen;
  30         u32 gpio_din_num;
  31         s32 *gpio_din_reg;
  32         s32 syscon;
  33         s32 padmux_func;
  34 };
  35
  36 struct starfive_pin {
  37         unsigned int pin;
  38         struct starfive_pin_config pin_config;
  39 };
  40
  41 struct starfive_pin_reg {
  42         s32 io_conf_reg;
  43         s32 gpo_dout_reg;
  44         s32 gpo_doen_reg;
  45         s32 func_sel_reg;
  46         s32 func_sel_shift;
  47         s32 func_sel_mask;
  48         s32 syscon_reg;
  49         s32 pad_sel_reg;
  50         s32 pad_sel_shift;
  51         s32 pad_sel_mask;
  52 };
  53
  54 struct starfive_iopad_sel_func_inf {
  55         unsigned int padctl_gpio_base;
  56         unsigned int padctl_gpio0;
  57 };
  58
  59 struct starfive_pinctrl {
  60         struct device *dev;
  61         struct pinctrl_dev *pctl_dev;
  62         void __iomem *padctl_base;
  63         void __iomem *gpio_base;
  64         unsigned int padctl_gpio_base;
  65         unsigned int padctl_gpio0;
  66         const struct starfive_pinctrl_soc_info *info;
  67         struct starfive_pin_reg *pin_regs;
  68         unsigned int group_index;
  69
  70         struct mutex mutex;
  71         raw_spinlock_t lock;
  72
  73         struct gpio_chip gc;
  74         struct pinctrl_gpio_range gpios;
  75         unsigned long enabled;
  76         unsigned int trigger[MAX_GPIO];
  77 };
  78
  79 struct starfive_pinctrl_soc_info {
  80         const struct pinctrl_pin_desc *pins;
  81         unsigned int npins;
  82         unsigned int flags;
  83
  84         /*gpio dout/doen/din register*/
  85         unsigned int dout_reg_base;
  86         unsigned int dout_reg_offset;
  87         unsigned int doen_reg_base;
  88         unsigned int doen_reg_offset;
  89         unsigned int din_reg_base;
  90         unsigned int din_reg_offset;
  91
  92         /* sel-function */
  93         int (*starfive_iopad_sel_func)(struct platform_device *pdev,
  94                                         struct starfive_pinctrl *ipctl,
  95                                         unsigned int func_id);
  96         /* generic pinconf */
  97         int (*starfive_pinconf_get)(struct pinctrl_dev *pctldev, unsigned int pin_id,
  98                                unsigned long *config);
  99         int (*starfive_pinconf_set)(struct pinctrl_dev *pctldev,
 100                                 unsigned int pin_id, unsigned long *configs,
 101                                 unsigned int num_configs);
 102
 103         /* generic pinmux */
 104         int (*starfive_pmx_set_one_pin_mux)(struct starfive_pinctrl *ipctl,
 105                                 struct starfive_pin *pin);
 106         /* gpio chip */
 107         int (*starfive_gpio_register)(struct platform_device *pdev,
 108                                 struct starfive_pinctrl *ipctl);
 109         void (*starfive_pinctrl_parse_pin)(struct starfive_pinctrl *ipctl,
 110                                         unsigned int *pins_id, struct starfive_pin *pin_data,
 111                                         const __be32 *list_p,
 112                                         struct device_node *np);
 113 };
 114
 115 #define STARFIVE_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
 116
 117 int starfive_pinctrl_probe(struct platform_device *pdev,
 118                         const struct starfive_pinctrl_soc_info *info);
 119
 120 #endif /* __DRIVERS_PINCTRL_STARFIVE_H */