drivers/pinctrl/freescale/pinctrl-mxs.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2012 Freescale Semiconductor, Inc.
   4  */
   5
   6 #ifndef __PINCTRL_MXS_H
   7 #define __PINCTRL_MXS_H
   8
   9 #include <linux/platform_device.h>
  10 #include <linux/pinctrl/pinctrl.h>
  11
  12 #define SET     0x4
  13 #define CLR     0x8
  14 #define TOG     0xc
  15
  16 #define MXS_PINCTRL_PIN(pin)    PINCTRL_PIN(pin, #pin)
  17 #define PINID(bank, pin)        ((bank) * 32 + (pin))
  18
  19 /*
  20  * pinmux-id bit field definitions
  21  *
  22  * bank:        15..12  (4)
  23  * pin:         11..4   (8)
  24  * muxsel:      3..0    (4)
  25  */
  26 #define MUXID_TO_PINID(m)       PINID((m) >> 12 & 0xf, (m) >> 4 & 0xff)
  27 #define MUXID_TO_MUXSEL(m)      ((m) & 0xf)
  28
  29 #define PINID_TO_BANK(p)        ((p) >> 5)
  30 #define PINID_TO_PIN(p)         ((p) % 32)
  31
  32 /*
  33  * pin config bit field definitions
  34  *
  35  * pull-up:     6..5    (2)
  36  * voltage:     4..3    (2)
  37  * mA:          2..0    (3)
  38  *
  39  * MSB of each field is presence bit for the config.
  40  */
  41 #define PULL_PRESENT            (1 << 6)
  42 #define PULL_SHIFT              5
  43 #define VOL_PRESENT             (1 << 4)
  44 #define VOL_SHIFT               3
  45 #define MA_PRESENT              (1 << 2)
  46 #define MA_SHIFT                0
  47 #define CONFIG_TO_PULL(c)       ((c) >> PULL_SHIFT & 0x1)
  48 #define CONFIG_TO_VOL(c)        ((c) >> VOL_SHIFT & 0x1)
  49 #define CONFIG_TO_MA(c)         ((c) >> MA_SHIFT & 0x3)
  50
  51 struct mxs_function {
  52         const char *name;
  53         const char **groups;
  54         unsigned ngroups;
  55 };
  56
  57 struct mxs_group {
  58         const char *name;
  59         unsigned int *pins;
  60         unsigned npins;
  61         u8 *muxsel;
  62         u8 config;
  63 };
  64
  65 struct mxs_regs {
  66         u16 muxsel;
  67         u16 drive;
  68         u16 pull;
  69 };
  70
  71 struct mxs_pinctrl_soc_data {
  72         const struct mxs_regs *regs;
  73         const struct pinctrl_pin_desc *pins;
  74         unsigned npins;
  75         struct mxs_function *functions;
  76         unsigned nfunctions;
  77         struct mxs_group *groups;
  78         unsigned ngroups;
  79 };
  80
  81 int mxs_pinctrl_probe(struct platform_device *pdev,
  82                       struct mxs_pinctrl_soc_data *soc);
  83
  84 #endif /* __PINCTRL_MXS_H */