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
  35 struct 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
  45 struct wmt_pinctrl_group {
  46         const char *name;
  47         const unsigned int *pins;
  48         const unsigned npins;
  49 };
  50
  51 struct 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
  69 int wmt_pinctrl_probe(struct platform_device *pdev,
  70                       struct wmt_pinctrl_data *data);