diff options
Diffstat (limited to 'arch/sh/include/asm/gpio.h')
| -rw-r--r-- | arch/sh/include/asm/gpio.h | 92 |
1 files changed, 90 insertions, 2 deletions
diff --git a/arch/sh/include/asm/gpio.h b/arch/sh/include/asm/gpio.h index cf32bd2..9650e7c 100644 --- a/arch/sh/include/asm/gpio.h +++ b/arch/sh/include/asm/gpio.h @@ -1,9 +1,9 @@ /* * 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 * License. See the file "COPYING" in the main directory of this archive @@ -16,4 +16,92 @@ #include <cpu/gpio.h> #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 */ |