Commit d764c504 authored by Nobuhiro Iwamatsu's avatar Nobuhiro Iwamatsu Committed by Nobuhiro Iwamatsu

sh: Add support pin function control using GPIO

Renesas SH and R-Mobile set up device using PFC.
This provide the framework. Most codes were brought from linux kernel.
Signed-off-by: default avatarNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: default avatarNobuhiro Iwamatsu <iwamatsu@nigauri.org>
parent d61678e0
......@@ -40,6 +40,7 @@ COBJS-$(CONFIG_TEGRA_GPIO) += tegra_gpio.o
COBJS-$(CONFIG_DA8XX_GPIO) += da8xx_gpio.o
COBJS-$(CONFIG_ALTERA_PIO) += altera_pio.o
COBJS-$(CONFIG_MPC83XX_GPIO) += mpc83xx_gpio.o
COBJS-$(CONFIG_SH_GPIO_PFC) += sh_pfc.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
......
This diff is collapsed.
/*
* SuperH Pin Function Controller Support
* Copy from Linux kernel. (include/linux/sh_pfc.h)
*
* 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
typedef unsigned short pinmux_enum_t;
typedef unsigned short pinmux_flag_t;
#define PINMUX_TYPE_NONE 0
#define PINMUX_TYPE_FUNCTION 1
#define PINMUX_TYPE_GPIO 2
#define PINMUX_TYPE_OUTPUT 3
#define PINMUX_TYPE_INPUT 4
#define PINMUX_TYPE_INPUT_PULLUP 5
#define PINMUX_TYPE_INPUT_PULLDOWN 6
#define PINMUX_FLAG_TYPE (0x7)
#define PINMUX_FLAG_WANT_PULLUP (1 << 3)
#define PINMUX_FLAG_WANT_PULLDOWN (1 << 4)
#define PINMUX_FLAG_DBIT_SHIFT 5
#define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT)
#define PINMUX_FLAG_DREG_SHIFT 10
#define PINMUX_FLAG_DREG (0x3f << PINMUX_FLAG_DREG_SHIFT)
struct pinmux_gpio {
pinmux_enum_t enum_id;
pinmux_flag_t flags;
};
#define PINMUX_GPIO(gpio, data_or_mark)[gpio] = { 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;
unsigned long *cnt;
pinmux_enum_t *enum_ids;
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, \
.cnt = (unsigned long [r_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, \
.cnt = (unsigned long [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, reg_shadow;
pinmux_enum_t *enum_ids;
void *mapped_reg;
};
#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;
pinmux_enum_t *enum_ids;
};
#define PINMUX_IRQ(irq_nr, ids...) \
{ .irq = irq_nr, .enum_ids = (pinmux_enum_t []) { ids, 0 } } \
struct pinmux_range {
pinmux_enum_t begin;
pinmux_enum_t end;
pinmux_enum_t force;
};
struct pinmux_info {
char *name;
pinmux_enum_t reserved_id;
struct pinmux_range data;
struct pinmux_range input;
struct pinmux_range input_pd;
struct pinmux_range input_pu;
struct pinmux_range output;
struct pinmux_range mark;
struct pinmux_range function;
unsigned first_gpio, last_gpio;
struct pinmux_gpio *gpios;
struct pinmux_cfg_reg *cfg_regs;
struct pinmux_data_reg *data_regs;
pinmux_enum_t *gpio_data;
unsigned int gpio_data_size;
struct pinmux_irq *gpio_irq;
unsigned int gpio_irq_size;
struct resource *resource;
unsigned int num_resources;
unsigned long unlock_reg;
};
int register_pinmux(struct pinmux_info *pip);
int unregister_pinmux(struct pinmux_info *pip);
/* 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_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 _GPIO_PORT(pfx, sfx) PINMUX_GPIO(GPIO_PORT##pfx, PORT##pfx##_DATA)
#define PORT_ALL(str) CPU_ALL_PORT(_PORT_ALL, PORT, str)
#define GPIO_PORT_ALL() CPU_ALL_PORT(_GPIO_PORT, , unused)
#define GPIO_FN(str) PINMUX_GPIO(GPIO_FN_##str, str##_MARK)
/* helper macro for pinmux_enum_t */
#define PORT_DATA_I(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_IN)
#define PORT_DATA_I_PD(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \
PORT##nr##_IN, PORT##nr##_IN_PD)
#define PORT_DATA_I_PU(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \
PORT##nr##_IN, PORT##nr##_IN_PU)
#define PORT_DATA_I_PU_PD(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, \
PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
#define PORT_DATA_O(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT)
#define PORT_DATA_IO(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
PORT##nr##_IN)
#define PORT_DATA_IO_PD(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
PORT##nr##_IN, PORT##nr##_IN_PD)
#define PORT_DATA_IO_PU(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
PORT##nr##_IN, PORT##nr##_IN_PU)
#define PORT_DATA_IO_PU_PD(nr) \
PINMUX_DATA(PORT##nr##_DATA, PORT##nr##_FN0, PORT##nr##_OUT, \
PORT##nr##_IN, PORT##nr##_IN_PD, PORT##nr##_IN_PU)
/* 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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