forked from Minki/linux
45abc49d19
Implement more GPIO APIs in case GPIOLIB is disabled. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com>
330 lines
7.7 KiB
C
330 lines
7.7 KiB
C
/*
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* Copyright 2006-2009 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef __ARCH_BLACKFIN_GPIO_H__
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#define __ARCH_BLACKFIN_GPIO_H__
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#define gpio_bank(x) ((x) >> 4)
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#define gpio_bit(x) (1<<((x) & 0xF))
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#define gpio_sub_n(x) ((x) & 0xF)
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#define GPIO_BANKSIZE 16
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#define GPIO_BANK_NUM DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
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#include <mach/gpio.h>
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#define PERIPHERAL_USAGE 1
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#define GPIO_USAGE 0
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#ifndef BFIN_GPIO_PINT
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# define BFIN_GPIO_PINT 0
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#endif
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#ifndef __ASSEMBLY__
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#include <linux/compiler.h>
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#include <linux/gpio.h>
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/***********************************************************
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*
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* FUNCTIONS: Blackfin General Purpose Ports Access Functions
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*
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* INPUTS/OUTPUTS:
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* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
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*
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*
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* DESCRIPTION: These functions abstract direct register access
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* to Blackfin processor General Purpose
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* Ports Regsiters
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*
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* CAUTION: These functions do not belong to the GPIO Driver API
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*************************************************************
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* MODIFICATION HISTORY :
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**************************************************************/
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#if !BFIN_GPIO_PINT
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void set_gpio_dir(unsigned, unsigned short);
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void set_gpio_inen(unsigned, unsigned short);
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void set_gpio_polar(unsigned, unsigned short);
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void set_gpio_edge(unsigned, unsigned short);
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void set_gpio_both(unsigned, unsigned short);
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void set_gpio_data(unsigned, unsigned short);
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void set_gpio_maska(unsigned, unsigned short);
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void set_gpio_maskb(unsigned, unsigned short);
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void set_gpio_toggle(unsigned);
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void set_gpiop_dir(unsigned, unsigned short);
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void set_gpiop_inen(unsigned, unsigned short);
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void set_gpiop_polar(unsigned, unsigned short);
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void set_gpiop_edge(unsigned, unsigned short);
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void set_gpiop_both(unsigned, unsigned short);
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void set_gpiop_data(unsigned, unsigned short);
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void set_gpiop_maska(unsigned, unsigned short);
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void set_gpiop_maskb(unsigned, unsigned short);
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unsigned short get_gpio_dir(unsigned);
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unsigned short get_gpio_inen(unsigned);
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unsigned short get_gpio_polar(unsigned);
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unsigned short get_gpio_edge(unsigned);
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unsigned short get_gpio_both(unsigned);
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unsigned short get_gpio_maska(unsigned);
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unsigned short get_gpio_maskb(unsigned);
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unsigned short get_gpio_data(unsigned);
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unsigned short get_gpiop_dir(unsigned);
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unsigned short get_gpiop_inen(unsigned);
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unsigned short get_gpiop_polar(unsigned);
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unsigned short get_gpiop_edge(unsigned);
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unsigned short get_gpiop_both(unsigned);
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unsigned short get_gpiop_maska(unsigned);
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unsigned short get_gpiop_maskb(unsigned);
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unsigned short get_gpiop_data(unsigned);
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struct gpio_port_t {
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unsigned short data;
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unsigned short dummy1;
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unsigned short data_clear;
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unsigned short dummy2;
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unsigned short data_set;
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unsigned short dummy3;
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unsigned short toggle;
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unsigned short dummy4;
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unsigned short maska;
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unsigned short dummy5;
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unsigned short maska_clear;
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unsigned short dummy6;
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unsigned short maska_set;
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unsigned short dummy7;
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unsigned short maska_toggle;
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unsigned short dummy8;
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unsigned short maskb;
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unsigned short dummy9;
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unsigned short maskb_clear;
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unsigned short dummy10;
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unsigned short maskb_set;
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unsigned short dummy11;
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unsigned short maskb_toggle;
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unsigned short dummy12;
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unsigned short dir;
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unsigned short dummy13;
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unsigned short polar;
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unsigned short dummy14;
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unsigned short edge;
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unsigned short dummy15;
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unsigned short both;
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unsigned short dummy16;
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unsigned short inen;
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};
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#endif
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#ifdef BFIN_SPECIAL_GPIO_BANKS
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void bfin_special_gpio_free(unsigned gpio);
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int bfin_special_gpio_request(unsigned gpio, const char *label);
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# ifdef CONFIG_PM
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void bfin_special_gpio_pm_hibernate_restore(void);
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void bfin_special_gpio_pm_hibernate_suspend(void);
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# endif
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#endif
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#ifdef CONFIG_PM
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int bfin_pm_standby_ctrl(unsigned ctrl);
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static inline int bfin_pm_standby_setup(void)
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{
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return bfin_pm_standby_ctrl(1);
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}
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static inline void bfin_pm_standby_restore(void)
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{
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bfin_pm_standby_ctrl(0);
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}
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void bfin_gpio_pm_hibernate_restore(void);
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void bfin_gpio_pm_hibernate_suspend(void);
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# if !BFIN_GPIO_PINT
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int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
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struct gpio_port_s {
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unsigned short data;
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unsigned short maska;
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unsigned short maskb;
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unsigned short dir;
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unsigned short polar;
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unsigned short edge;
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unsigned short both;
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unsigned short inen;
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unsigned short fer;
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unsigned short reserved;
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unsigned short mux;
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};
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# endif
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#endif /*CONFIG_PM*/
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/***********************************************************
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*
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* FUNCTIONS: Blackfin GPIO Driver
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*
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* INPUTS/OUTPUTS:
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* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
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*
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*
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* DESCRIPTION: Blackfin GPIO Driver API
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*
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* CAUTION:
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*************************************************************
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* MODIFICATION HISTORY :
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**************************************************************/
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int bfin_gpio_request(unsigned gpio, const char *label);
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void bfin_gpio_free(unsigned gpio);
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int bfin_gpio_irq_request(unsigned gpio, const char *label);
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void bfin_gpio_irq_free(unsigned gpio);
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int bfin_gpio_direction_input(unsigned gpio);
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int bfin_gpio_direction_output(unsigned gpio, int value);
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int bfin_gpio_get_value(unsigned gpio);
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void bfin_gpio_set_value(unsigned gpio, int value);
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#include <asm/irq.h>
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#include <asm/errno.h>
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#ifdef CONFIG_GPIOLIB
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#include <asm-generic/gpio.h> /* cansleep wrappers */
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static inline int gpio_get_value(unsigned int gpio)
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{
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if (gpio < MAX_BLACKFIN_GPIOS)
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return bfin_gpio_get_value(gpio);
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else
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return __gpio_get_value(gpio);
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}
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static inline void gpio_set_value(unsigned int gpio, int value)
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{
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if (gpio < MAX_BLACKFIN_GPIOS)
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bfin_gpio_set_value(gpio, value);
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else
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__gpio_set_value(gpio, value);
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}
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static inline int gpio_cansleep(unsigned int gpio)
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{
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return __gpio_cansleep(gpio);
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}
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static inline int gpio_to_irq(unsigned gpio)
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{
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return __gpio_to_irq(gpio);
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}
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#else /* !CONFIG_GPIOLIB */
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static inline int gpio_request(unsigned gpio, const char *label)
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{
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return bfin_gpio_request(gpio, label);
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}
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static inline void gpio_free(unsigned gpio)
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{
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return bfin_gpio_free(gpio);
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}
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static inline int gpio_direction_input(unsigned gpio)
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{
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return bfin_gpio_direction_input(gpio);
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}
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static inline int gpio_direction_output(unsigned gpio, int value)
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{
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return bfin_gpio_direction_output(gpio, value);
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}
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static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
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{
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return -EINVAL;
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}
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static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
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{
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int err;
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err = bfin_gpio_request(gpio, label);
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if (err)
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return err;
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if (flags & GPIOF_DIR_IN)
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err = bfin_gpio_direction_input(gpio);
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else
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err = bfin_gpio_direction_output(gpio,
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(flags & GPIOF_INIT_HIGH) ? 1 : 0);
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if (err)
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bfin_gpio_free(gpio);
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return err;
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}
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static inline int gpio_request_array(const struct gpio *array, size_t num)
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{
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int i, err;
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for (i = 0; i < num; i++, array++) {
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err = gpio_request_one(array->gpio, array->flags, array->label);
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if (err)
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goto err_free;
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}
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return 0;
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err_free:
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while (i--)
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bfin_gpio_free((--array)->gpio);
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return err;
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}
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static inline void gpio_free_array(const struct gpio *array, size_t num)
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{
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while (num--)
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bfin_gpio_free((array++)->gpio);
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}
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static inline int __gpio_get_value(unsigned gpio)
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{
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return bfin_gpio_get_value(gpio);
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}
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static inline void __gpio_set_value(unsigned gpio, int value)
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{
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return bfin_gpio_set_value(gpio, value);
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}
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static inline int gpio_get_value(unsigned gpio)
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{
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return __gpio_get_value(gpio);
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}
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static inline void gpio_set_value(unsigned gpio, int value)
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{
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return __gpio_set_value(gpio, value);
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}
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static inline int gpio_to_irq(unsigned gpio)
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{
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if (likely(gpio < MAX_BLACKFIN_GPIOS))
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return gpio + GPIO_IRQ_BASE;
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return -EINVAL;
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}
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#include <asm-generic/gpio.h> /* cansleep wrappers */
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#endif /* !CONFIG_GPIOLIB */
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static inline int irq_to_gpio(unsigned irq)
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{
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return (irq - GPIO_IRQ_BASE);
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}
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_BLACKFIN_GPIO_H__ */
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