drivers/pinctrl/pinctrl-lantiq.h

   1 /*
   2  *  linux/drivers/pinctrl/pinctrl-lantiq.h
   3  *  based on linux/drivers/pinctrl/pinctrl-pxa3xx.h
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License version 2 as
   7  *  publishhed by the Free Software Foundation.
   8  *
   9  *  Copyright (C) 2012 John Crispin <blogic@openwrt.org>
  10  */
  11
  12 #ifndef __PINCTRL_LANTIQ_H
  13 #define __PINCTRL_LANTIQ_H
  14
  15 #include <linux/clkdev.h>
  16 #include <linux/pinctrl/pinctrl.h>
  17 #include <linux/pinctrl/pinconf.h>
  18 #include <linux/pinctrl/pinmux.h>
  19 #include <linux/pinctrl/consumer.h>
  20 #include <linux/pinctrl/machine.h>
  21
  22 #include "core.h"
  23
  24 #define ARRAY_AND_SIZE(x)       (x), ARRAY_SIZE(x)
  25
  26 #define LTQ_MAX_MUX             4
  27 #define MFPR_FUNC_MASK          0x3
  28
  29 #define LTQ_PINCONF_PACK(param, arg)            ((param) << 16 | (arg))
  30 #define LTQ_PINCONF_UNPACK_PARAM(conf)          ((conf) >> 16)
  31 #define LTQ_PINCONF_UNPACK_ARG(conf)            ((conf) & 0xffff)
  32
  33 enum ltq_pinconf_param {
  34         LTQ_PINCONF_PARAM_PULL,
  35         LTQ_PINCONF_PARAM_OPEN_DRAIN,
  36         LTQ_PINCONF_PARAM_DRIVE_CURRENT,
  37         LTQ_PINCONF_PARAM_SLEW_RATE,
  38         LTQ_PINCONF_PARAM_OUTPUT,
  39 };
  40
  41 struct ltq_cfg_param {
  42         const char *property;
  43         enum ltq_pinconf_param param;
  44 };
  45
  46 struct ltq_mfp_pin {
  47         const char *name;
  48         const unsigned int pin;
  49         const unsigned short func[LTQ_MAX_MUX];
  50 };
  51
  52 struct ltq_pin_group {
  53         const char *name;
  54         const unsigned mux;
  55         const unsigned *pins;
  56         const unsigned npins;
  57 };
  58
  59 struct ltq_pmx_func {
  60         const char *name;
  61         const char * const *groups;
  62         const unsigned num_groups;
  63 };
  64
  65 struct ltq_pinmux_info {
  66         struct device *dev;
  67         struct pinctrl_dev *pctrl;
  68
  69         /* we need to manage up to 5 pad controllers */
  70         void __iomem *membase[5];
  71
  72         /* the descriptor for the subsystem */
  73         struct pinctrl_desc *desc;
  74
  75         /* we expose our pads to the subsystem */
  76         struct pinctrl_pin_desc *pads;
  77
  78         /* the number of pads. this varies between socs */
  79         unsigned int num_pads;
  80
  81         /* these are our multifunction pins */
  82         const struct ltq_mfp_pin *mfp;
  83         unsigned int num_mfp;
  84
  85         /* a number of multifunction pins can be grouped together */
  86         const struct ltq_pin_group *grps;
  87         unsigned int num_grps;
  88
  89         /* a mapping between function string and id */
  90         const struct ltq_pmx_func *funcs;
  91         unsigned int num_funcs;
  92
  93         /* the pinconf options that we are able to read from the DT */
  94         const struct ltq_cfg_param *params;
  95         unsigned int num_params;
  96
  97         /* the pad controller can have a irq mapping  */
  98         const unsigned *exin;
  99         unsigned int num_exin;
 100
 101         /* we need 5 clocks max */
 102         struct clk *clk[5];
 103
 104         /* soc specific callback used to apply muxing */
 105         int (*apply_mux)(struct pinctrl_dev *pctrldev, int pin, int mux);
 106 };
 107
 108 enum ltq_pin {
 109         GPIO0 = 0,
 110         GPIO1,
 111         GPIO2,
 112         GPIO3,
 113         GPIO4,
 114         GPIO5,
 115         GPIO6,
 116         GPIO7,
 117         GPIO8,
 118         GPIO9,
 119         GPIO10, /* 10 */
 120         GPIO11,
 121         GPIO12,
 122         GPIO13,
 123         GPIO14,
 124         GPIO15,
 125         GPIO16,
 126         GPIO17,
 127         GPIO18,
 128         GPIO19,
 129         GPIO20, /* 20 */
 130         GPIO21,
 131         GPIO22,
 132         GPIO23,
 133         GPIO24,
 134         GPIO25,
 135         GPIO26,
 136         GPIO27,
 137         GPIO28,
 138         GPIO29,
 139         GPIO30, /* 30 */
 140         GPIO31,
 141         GPIO32,
 142         GPIO33,
 143         GPIO34,
 144         GPIO35,
 145         GPIO36,
 146         GPIO37,
 147         GPIO38,
 148         GPIO39,
 149         GPIO40, /* 40 */
 150         GPIO41,
 151         GPIO42,
 152         GPIO43,
 153         GPIO44,
 154         GPIO45,
 155         GPIO46,
 156         GPIO47,
 157         GPIO48,
 158         GPIO49,
 159         GPIO50, /* 50 */
 160         GPIO51,
 161         GPIO52,
 162         GPIO53,
 163         GPIO54,
 164         GPIO55,
 165
 166         GPIO64,
 167         GPIO65,
 168         GPIO66,
 169         GPIO67,
 170         GPIO68,
 171         GPIO69,
 172         GPIO70,
 173         GPIO71,
 174         GPIO72,
 175         GPIO73,
 176         GPIO74,
 177         GPIO75,
 178         GPIO76,
 179         GPIO77,
 180         GPIO78,
 181         GPIO79,
 182         GPIO80,
 183         GPIO81,
 184         GPIO82,
 185         GPIO83,
 186         GPIO84,
 187         GPIO85,
 188         GPIO86,
 189         GPIO87,
 190         GPIO88,
 191 };
 192
 193 extern int ltq_pinctrl_register(struct platform_device *pdev,
 194                                    struct ltq_pinmux_info *info);
 195 extern int ltq_pinctrl_unregister(struct platform_device *pdev);
 196 #endif  /* __PINCTRL_LANTIQ_H */