Commit 2967dab1 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt

sh: GPIO and pinmux base code

This patch adds gpio code together with the pinmux table parser.
In the future we should optimize this and switch back to gpiolib.
Signed-off-by: default avatarMagnus Damm <damm@igel.co.jp>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 14866543
...@@ -59,6 +59,9 @@ config GENERIC_HARDIRQS_NO__DO_IRQ ...@@ -59,6 +59,9 @@ config GENERIC_HARDIRQS_NO__DO_IRQ
config GENERIC_IRQ_PROBE config GENERIC_IRQ_PROBE
def_bool y def_bool y
config GENERIC_GPIO
def_bool n
config GENERIC_CALIBRATE_DELAY config GENERIC_CALIBRATE_DELAY
bool bool
......
/* /*
* include/asm-sh/gpio.h * include/asm-sh/gpio.h
* *
* Copyright (C) 2007 Markus Brunner, Mark Jonas * Generic GPIO API and pinmux table support for SuperH.
* *
* Addresses for the Pin Function Controller * Copyright (c) 2008 Magnus Damm
* *
* This file is subject to the terms and conditions of the GNU General Public * 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 * License. See the file "COPYING" in the main directory of this archive
...@@ -16,4 +16,92 @@ ...@@ -16,4 +16,92 @@
#include <cpu/gpio.h> #include <cpu/gpio.h>
#endif #endif
typedef unsigned short pinmux_enum_t;
typedef unsigned char 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)
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;
};
#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)]) \
struct pinmux_data_reg {
unsigned long reg, reg_width;
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_range {
pinmux_enum_t begin;
pinmux_enum_t end;
};
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;
unsigned long *gpio_in_use;
};
int register_pinmux(struct pinmux_info *pip);
int __gpio_request(unsigned gpio);
static inline int gpio_request(unsigned gpio, const char *label)
{
return __gpio_request(gpio);
}
void gpio_free(unsigned gpio);
int gpio_direction_input(unsigned gpio);
int gpio_direction_output(unsigned gpio, int value);
int gpio_get_value(unsigned gpio);
void gpio_set_value(unsigned gpio, int value);
static inline int gpio_export(unsigned gpio, bool direction_may_change)
{
return 0;
}
#endif /* __ASM_SH_GPIO_H */ #endif /* __ASM_SH_GPIO_H */
...@@ -5,7 +5,7 @@ ...@@ -5,7 +5,7 @@
extra-y := head_32.o init_task.o vmlinux.lds extra-y := head_32.o init_task.o vmlinux.lds
obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_32.o \ obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_32.o \
ptrace_32.o setup.o signal_32.o sys_sh.o sys_sh32.o \ ptrace_32.o setup.o signal_32.o sys_sh.o sys_sh32.o gpio.o \
syscalls_32.o time_32.o topology.o traps.o traps_32.o syscalls_32.o time_32.o topology.o traps.o traps_32.o
obj-y += cpu/ timers/ obj-y += cpu/ timers/
......
extra-y := head_64.o init_task.o vmlinux.lds extra-y := head_64.o init_task.o vmlinux.lds
obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_64.o \ obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_64.o \
ptrace_64.o setup.o signal_64.o sys_sh.o sys_sh64.o \ ptrace_64.o setup.o signal_64.o sys_sh.o sys_sh64.o gpio.o \
syscalls_64.o time_64.o topology.o traps.o traps_64.o syscalls_64.o time_64.o topology.o traps.o traps_64.o
obj-y += cpu/ timers/ obj-y += cpu/ timers/
......
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