LXR linux/drivers/pinctrl/vt8500/pinctrl-wmt.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Pinctrl driver for the Wondermedia SoC's
   4 *
   5 * Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>
   6 */
   7
   8#include <linux/gpio/driver.h>
   9
  10/* VT8500 has no enable register in the extgpio bank. */
  11#define NO_REG  0xFFFF
  12
  13#define WMT_PINCTRL_BANK(__en, __dir, __dout, __din, __pen, __pcfg)     \
  14{                                                                       \
  15        .reg_en         = __en,                                         \
  16        .reg_dir        = __dir,                                        \
  17        .reg_data_out   = __dout,                                       \
  18        .reg_data_in    = __din,                                        \
  19        .reg_pull_en    = __pen,                                        \
  20        .reg_pull_cfg   = __pcfg,                                       \
  21}
  22
  23/* Encode/decode the bank/bit pairs into a pin value */
  24#define WMT_PIN(__bank, __offset)       ((__bank << 5) | __offset)
  25#define WMT_BANK_FROM_PIN(__pin)        (__pin >> 5)
  26#define WMT_BIT_FROM_PIN(__pin)         (__pin & 0x1f)
  27
  28#define WMT_GROUP(__name, __data)               \
  29{                                               \
  30        .name = __name,                         \
  31        .pins = __data,                         \
  32        .npins = ARRAY_SIZE(__data),            \
  33}
  34
  35struct wmt_pinctrl_bank_registers {
  36        u32     reg_en;
  37        u32     reg_dir;
  38        u32     reg_data_out;
  39        u32     reg_data_in;
  40
  41        u32     reg_pull_en;
  42        u32     reg_pull_cfg;
  43};
  44
  45struct wmt_pinctrl_group {
  46        const char *name;
  47        const unsigned int *pins;
  48        const unsigned npins;
  49};
  50
  51struct wmt_pinctrl_data {
  52        struct device *dev;
  53        struct pinctrl_dev *pctl_dev;
  54
  55        /* must be initialized before calling wmt_pinctrl_probe */
  56        void __iomem *base;
  57        const struct wmt_pinctrl_bank_registers *banks;
  58        const struct pinctrl_pin_desc *pins;
  59        const char * const *groups;
  60
  61        u32 nbanks;
  62        u32 npins;
  63        u32 ngroups;
  64
  65        struct gpio_chip gpio_chip;
  66        struct pinctrl_gpio_range gpio_range;
  67};
  68
  69int wmt_pinctrl_probe(struct platform_device *pdev,
  70                      struct wmt_pinctrl_data *data);
  71