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/*
* SuperH Pin Function Controller Support
*
* Copyright (c) 2008 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef __SH_PFC_H
#define __SH_PFC_H
#include <linux/bug.h>
#include <linux/stringify.h>
typedef unsigned short pinmux_enum_t;
enum {
PINMUX_TYPE_NONE,
PINMUX_TYPE_FUNCTION,
PINMUX_TYPE_GPIO,
PINMUX_TYPE_OUTPUT,
PINMUX_TYPE_INPUT,
};
#define SH_PFC_PIN_CFG_INPUT (1 << 0)
#define SH_PFC_PIN_CFG_OUTPUT (1 << 1)
#define SH_PFC_PIN_CFG_PULL_UP (1 << 2)
#define SH_PFC_PIN_CFG_PULL_DOWN (1 << 3)
struct sh_pfc_pin {
pinmux_enum_t enum_id;
const char *name;
unsigned int configs;
};
#define SH_PFC_PIN_GROUP(n) \
{ \
.name = #n, \
.pins = n##_pins, \
.mux = n##_mux, \
.nr_pins = ARRAY_SIZE(n##_pins), \
}
struct sh_pfc_pin_group {
const char *name;
const unsigned int *pins;
const unsigned int *mux;
unsigned int nr_pins;
};
#define SH_PFC_FUNCTION(n) \
{ \
.name = #n, \
.groups = n##_groups, \
.nr_groups = ARRAY_SIZE(n##_groups), \
}
struct sh_pfc_function {
const char *name;
const char * const *groups;
unsigned int nr_groups;
};
struct pinmux_func {
pinmux_enum_t enum_id;
const char *name;
};
#define PINMUX_GPIO(gpio, data_or_mark) \
[gpio] = { \
.name = __stringify(gpio), \
.enum_id = data_or_mark, \
}
#define PINMUX_GPIO_FN(gpio, base, data_or_mark) \
[gpio - (base)] = { \
.name = __stringify(gpio), \
.enum_id = data_or_mark, \
}
#define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0
struct pinmux_cfg_reg {
unsigned long reg, reg_width, field_width;
const pinmux_enum_t *enum_ids;
const unsigned long *var_field_width;
};
#define PINMUX_CFG_REG(name, r, r_width, f_width) \
.reg = r, .reg_width = r_width, .field_width = f_width, \
.enum_ids = (pinmux_enum_t [(r_width / f_width) * (1 << f_width)])
#define PINMUX_CFG_REG_VAR(name, r, r_width, var_fw0, var_fwn...) \
.reg = r, .reg_width = r_width, \
.var_field_width = (unsigned long [r_width]) { var_fw0, var_fwn, 0 }, \
.enum_ids = (pinmux_enum_t [])
struct pinmux_data_reg {
unsigned long reg, reg_width;
const pinmux_enum_t *enum_ids;
};
#define PINMUX_DATA_REG(name, r, r_width) \
.reg = r, .reg_width = r_width, \
.enum_ids = (pinmux_enum_t [r_width]) \
struct pinmux_irq {
int irq;
unsigned short *gpios;
};
#define PINMUX_IRQ(irq_nr, ids...) \
{ .irq = irq_nr, .gpios = (unsigned short []) { ids, 0 } } \
struct pinmux_range {
pinmux_enum_t begin;
pinmux_enum_t end;
pinmux_enum_t force;
};
struct sh_pfc;
struct sh_pfc_soc_operations {
int (*init)(struct sh_pfc *pfc);
void (*exit)(struct sh_pfc *pfc);
unsigned int (*get_bias)(struct sh_pfc *pfc, unsigned int pin);
void (*set_bias)(struct sh_pfc *pfc, unsigned int pin,
unsigned int bias);
};
struct sh_pfc_soc_info {
const char *name;
const struct sh_pfc_soc_operations *ops;
struct pinmux_range input;
struct pinmux_range output;
struct pinmux_range function;
const struct sh_pfc_pin *pins;
unsigned int nr_pins;
const struct pinmux_range *ranges;
unsigned int nr_ranges;
const struct sh_pfc_pin_group *groups;
unsigned int nr_groups;
const struct sh_pfc_function *functions;
unsigned int nr_functions;
const struct pinmux_func *func_gpios;
unsigned int nr_func_gpios;
const struct pinmux_cfg_reg *cfg_regs;
const struct pinmux_data_reg *data_regs;
const pinmux_enum_t *gpio_data;
unsigned int gpio_data_size;
const struct pinmux_irq *gpio_irq;
unsigned int gpio_irq_size;
unsigned long unlock_reg;
};
/* helper macro for port */
#define PORT_1(fn, pfx, sfx) fn(pfx, sfx)
#define PORT_10(fn, pfx, sfx) \
PORT_1(fn, pfx##0, sfx), PORT_1(fn, pfx##1, sfx), \
PORT_1(fn, pfx##2, sfx), PORT_1(fn, pfx##3, sfx), \
PORT_1(fn, pfx##4, sfx), PORT_1(fn, pfx##5, sfx), \
PORT_1(fn, pfx##6, sfx), PORT_1(fn, pfx##7, sfx), \
PORT_1(fn, pfx##8, sfx), PORT_1(fn, pfx##9, sfx)
#define PORT_10_REV(fn, pfx, sfx) \
PORT_1(fn, pfx##9, sfx), PORT_1(fn, pfx##8, sfx), \
PORT_1(fn, pfx##7, sfx), PORT_1(fn, pfx##6, sfx), \
PORT_1(fn, pfx##5, sfx), PORT_1(fn, pfx##4, sfx), \
PORT_1(fn, pfx##3, sfx), PORT_1(fn, pfx##2, sfx), \
PORT_1(fn, pfx##1, sfx), PORT_1(fn, pfx##0, sfx)
#define PORT_32(fn, pfx, sfx) \
PORT_10(fn, pfx, sfx), PORT_10(fn, pfx##1, sfx), \
PORT_10(fn, pfx##2, sfx), PORT_1(fn, pfx##30, sfx), \
PORT_1(fn, pfx##31, sfx)
#define PORT_32_REV(fn, pfx, sfx) \
PORT_1(fn, pfx##31, sfx), PORT_1(fn, pfx##30, sfx), \
PORT_10_REV(fn, pfx##2, sfx), PORT_10_REV(fn, pfx##1, sfx), \
PORT_10_REV(fn, pfx, sfx)
#define PORT_90(fn, pfx, sfx) \
PORT_10(fn, pfx##1, sfx), PORT_10(fn, pfx##2, sfx), \
PORT_10(fn, pfx##3, sfx), PORT_10(fn, pfx##4, sfx), \
PORT_10(fn, pfx##5, sfx), PORT_10(fn, pfx##6, sfx), \
PORT_10(fn, pfx##7, sfx), PORT_10(fn, pfx##8, sfx), \
PORT_10(fn, pfx##9, sfx)
#define _PORT_ALL(pfx, sfx) pfx##_##sfx
#define PORT_ALL(str) CPU_ALL_PORT(_PORT_ALL, PORT, str)
#define GPIO_FN(str) PINMUX_GPIO_FN(GPIO_FN_##str, PINMUX_FN_BASE, str##_MARK)
/* helper macro for pinmux_enum_t */
#define PORT_DATA_IO(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
PORT##nr##_IN)
/* helper macro for top 4 bits in PORTnCR */
#define _PCRH(in, in_pd, in_pu, out) \
0, (out), (in), 0, \
0, 0, 0, 0, \
0, 0, (in_pd), 0, \
0, 0, (in_pu), 0
#define PORTCR(nr, reg) \
{ \
PINMUX_CFG_REG("PORT" nr "CR", reg, 8, 4) { \
_PCRH(PORT##nr##_IN, PORT##nr##_IN_PD, \
PORT##nr##_IN_PU, PORT##nr##_OUT), \
PORT##nr##_FN0, PORT##nr##_FN1, \
PORT##nr##_FN2, PORT##nr##_FN3, \
PORT##nr##_FN4, PORT##nr##_FN5, \
PORT##nr##_FN6, PORT##nr##_FN7 } \
}
#endif /* __SH_PFC_H */
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