1 files changed, 285 insertions, 0 deletions
diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h
new file mode 100644
index 00000000..12d3571b
--- /dev/null
+++ b/arch/blackfin/include/asm/gpio.h
@@ -0,0 +1,285 @@
+/*
+ * Copyright 2006-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ARCH_BLACKFIN_GPIO_H__
+#define __ARCH_BLACKFIN_GPIO_H__
+
+#define gpio_bank(x)	((x) >> 4)
+#define gpio_bit(x)	(1<<((x) & 0xF))
+#define gpio_sub_n(x)	((x) & 0xF)
+
+#define GPIO_BANKSIZE	16
+#define GPIO_BANK_NUM	DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
+
+#include <mach/gpio.h>
+
+#define PERIPHERAL_USAGE 1
+#define GPIO_USAGE 0
+
+#ifndef BFIN_GPIO_PINT
+# define BFIN_GPIO_PINT 0
+#endif
+
+#ifndef __ASSEMBLY__
+
+#include <linux/compiler.h>
+
+/***********************************************************
+*
+* FUNCTIONS: Blackfin General Purpose Ports Access Functions
+*
+* INPUTS/OUTPUTS:
+* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
+*
+*
+* DESCRIPTION: These functions abstract direct register access
+*              to Blackfin processor General Purpose
+*              Ports Regsiters
+*
+* CAUTION: These functions do not belong to the GPIO Driver API
+*************************************************************
+* MODIFICATION HISTORY :
+**************************************************************/
+
+#if !BFIN_GPIO_PINT
+void set_gpio_dir(unsigned, unsigned short);
+void set_gpio_inen(unsigned, unsigned short);
+void set_gpio_polar(unsigned, unsigned short);
+void set_gpio_edge(unsigned, unsigned short);
+void set_gpio_both(unsigned, unsigned short);
+void set_gpio_data(unsigned, unsigned short);
+void set_gpio_maska(unsigned, unsigned short);
+void set_gpio_maskb(unsigned, unsigned short);
+void set_gpio_toggle(unsigned);
+void set_gpiop_dir(unsigned, unsigned short);
+void set_gpiop_inen(unsigned, unsigned short);
+void set_gpiop_polar(unsigned, unsigned short);
+void set_gpiop_edge(unsigned, unsigned short);
+void set_gpiop_both(unsigned, unsigned short);
+void set_gpiop_data(unsigned, unsigned short);
+void set_gpiop_maska(unsigned, unsigned short);
+void set_gpiop_maskb(unsigned, unsigned short);
+unsigned short get_gpio_dir(unsigned);
+unsigned short get_gpio_inen(unsigned);
+unsigned short get_gpio_polar(unsigned);
+unsigned short get_gpio_edge(unsigned);
+unsigned short get_gpio_both(unsigned);
+unsigned short get_gpio_maska(unsigned);
+unsigned short get_gpio_maskb(unsigned);
+unsigned short get_gpio_data(unsigned);
+unsigned short get_gpiop_dir(unsigned);
+unsigned short get_gpiop_inen(unsigned);
+unsigned short get_gpiop_polar(unsigned);
+unsigned short get_gpiop_edge(unsigned);
+unsigned short get_gpiop_both(unsigned);
+unsigned short get_gpiop_maska(unsigned);
+unsigned short get_gpiop_maskb(unsigned);
+unsigned short get_gpiop_data(unsigned);
+
+struct gpio_port_t {
+	unsigned short data;
+	unsigned short dummy1;
+	unsigned short data_clear;
+	unsigned short dummy2;
+	unsigned short data_set;
+	unsigned short dummy3;
+	unsigned short toggle;
+	unsigned short dummy4;
+	unsigned short maska;
+	unsigned short dummy5;
+	unsigned short maska_clear;
+	unsigned short dummy6;
+	unsigned short maska_set;
+	unsigned short dummy7;
+	unsigned short maska_toggle;
+	unsigned short dummy8;
+	unsigned short maskb;
+	unsigned short dummy9;
+	unsigned short maskb_clear;
+	unsigned short dummy10;
+	unsigned short maskb_set;
+	unsigned short dummy11;
+	unsigned short maskb_toggle;
+	unsigned short dummy12;
+	unsigned short dir;
+	unsigned short dummy13;
+	unsigned short polar;
+	unsigned short dummy14;
+	unsigned short edge;
+	unsigned short dummy15;
+	unsigned short both;
+	unsigned short dummy16;
+	unsigned short inen;
+};
+#endif
+
+#ifdef BFIN_SPECIAL_GPIO_BANKS
+void bfin_special_gpio_free(unsigned gpio);
+int bfin_special_gpio_request(unsigned gpio, const char *label);
+# ifdef CONFIG_PM
+void bfin_special_gpio_pm_hibernate_restore(void);
+void bfin_special_gpio_pm_hibernate_suspend(void);
+# endif
+#endif
+
+#ifdef CONFIG_PM
+int bfin_pm_standby_ctrl(unsigned ctrl);
+
+static inline int bfin_pm_standby_setup(void)
+{
+	return bfin_pm_standby_ctrl(1);
+}
+
+static inline void bfin_pm_standby_restore(void)
+{
+	bfin_pm_standby_ctrl(0);
+}
+
+void bfin_gpio_pm_hibernate_restore(void);
+void bfin_gpio_pm_hibernate_suspend(void);
+
+# if !BFIN_GPIO_PINT
+int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
+
+struct gpio_port_s {
+	unsigned short data;
+	unsigned short maska;
+	unsigned short maskb;
+	unsigned short dir;
+	unsigned short polar;
+	unsigned short edge;
+	unsigned short both;
+	unsigned short inen;
+
+	unsigned short fer;
+	unsigned short reserved;
+	unsigned short mux;
+};
+# endif
+#endif /*CONFIG_PM*/
+
+/***********************************************************
+*
+* FUNCTIONS: Blackfin GPIO Driver
+*
+* INPUTS/OUTPUTS:
+* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
+*
+*
+* DESCRIPTION: Blackfin GPIO Driver API
+*
+* CAUTION:
+*************************************************************
+* MODIFICATION HISTORY :
+**************************************************************/
+
+int bfin_gpio_request(unsigned gpio, const char *label);
+void bfin_gpio_free(unsigned gpio);
+int bfin_gpio_irq_request(unsigned gpio, const char *label);
+void bfin_gpio_irq_free(unsigned gpio);
+int bfin_gpio_direction_input(unsigned gpio);
+int bfin_gpio_direction_output(unsigned gpio, int value);
+int bfin_gpio_get_value(unsigned gpio);
+void bfin_gpio_set_value(unsigned gpio, int value);
+
+#include <asm/irq.h>
+#include <asm/errno.h>
+
+#ifdef CONFIG_GPIOLIB
+#include <asm-generic/gpio.h>		/* cansleep wrappers */
+
+static inline int gpio_get_value(unsigned int gpio)
+{
+	if (gpio < MAX_BLACKFIN_GPIOS)
+		return bfin_gpio_get_value(gpio);
+	else
+		return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned int gpio, int value)
+{
+	if (gpio < MAX_BLACKFIN_GPIOS)
+		bfin_gpio_set_value(gpio, value);
+	else
+		__gpio_set_value(gpio, value);
+}
+
+static inline int gpio_cansleep(unsigned int gpio)
+{
+	return __gpio_cansleep(gpio);
+}
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+	return __gpio_to_irq(gpio);
+}
+
+#else /* !CONFIG_GPIOLIB */
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+	return bfin_gpio_request(gpio, label);
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+	return bfin_gpio_free(gpio);
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+	return bfin_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+	return bfin_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
+{
+	return -EINVAL;
+}
+
+static inline int __gpio_get_value(unsigned gpio)
+{
+	return bfin_gpio_get_value(gpio);
+}
+
+static inline void __gpio_set_value(unsigned gpio, int value)
+{
+	return bfin_gpio_set_value(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+	return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+	return __gpio_set_value(gpio, value);
+}
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+	if (likely(gpio < MAX_BLACKFIN_GPIOS))
+		return gpio + GPIO_IRQ_BASE;
+
+	return -EINVAL;
+}
+
+#include <asm-generic/gpio.h>		/* cansleep wrappers */
+#endif	/* !CONFIG_GPIOLIB */
+
+static inline int irq_to_gpio(unsigned irq)
+{
+	return (irq - GPIO_IRQ_BASE);
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ARCH_BLACKFIN_GPIO_H__ */