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Diffstat (limited to 'arch/m68k/include/asm/gpio.h')
-rw-r--r--arch/m68k/include/asm/gpio.h179
1 files changed, 12 insertions, 167 deletions
diff --git a/arch/m68k/include/asm/gpio.h b/arch/m68k/include/asm/gpio.h
index 00d0071..4395ffc 100644
--- a/arch/m68k/include/asm/gpio.h
+++ b/arch/m68k/include/asm/gpio.h
@@ -17,170 +17,9 @@
#define coldfire_gpio_h
#include <linux/io.h>
-#include <asm-generic/gpio.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
-
-/*
- * The Freescale Coldfire family is quite varied in how they implement GPIO.
- * Some parts have 8 bit ports, some have 16bit and some have 32bit; some have
- * only one port, others have multiple ports; some have a single data latch
- * for both input and output, others have a separate pin data register to read
- * input; some require a read-modify-write access to change an output, others
- * have set and clear registers for some of the outputs; Some have all the
- * GPIOs in a single control area, others have some GPIOs implemented in
- * different modules.
- *
- * This implementation attempts accommodate the differences while presenting
- * a generic interface that will optimize to as few instructions as possible.
- */
-#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
- defined(CONFIG_M520x) || defined(CONFIG_M523x) || \
- defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
- defined(CONFIG_M532x) || defined(CONFIG_M54xx)
-
-/* These parts have GPIO organized by 8 bit ports */
-
-#define MCFGPIO_PORTTYPE u8
-#define MCFGPIO_PORTSIZE 8
-#define mcfgpio_read(port) __raw_readb(port)
-#define mcfgpio_write(data, port) __raw_writeb(data, port)
-
-#elif defined(CONFIG_M5307) || defined(CONFIG_M5407) || defined(CONFIG_M5272)
-
-/* These parts have GPIO organized by 16 bit ports */
-
-#define MCFGPIO_PORTTYPE u16
-#define MCFGPIO_PORTSIZE 16
-#define mcfgpio_read(port) __raw_readw(port)
-#define mcfgpio_write(data, port) __raw_writew(data, port)
-
-#elif defined(CONFIG_M5249)
-
-/* These parts have GPIO organized by 32 bit ports */
-
-#define MCFGPIO_PORTTYPE u32
-#define MCFGPIO_PORTSIZE 32
-#define mcfgpio_read(port) __raw_readl(port)
-#define mcfgpio_write(data, port) __raw_writel(data, port)
-
-#endif
-
-#define mcfgpio_bit(gpio) (1 << ((gpio) % MCFGPIO_PORTSIZE))
-#define mcfgpio_port(gpio) ((gpio) / MCFGPIO_PORTSIZE)
-
-#if defined(CONFIG_M520x) || defined(CONFIG_M523x) || \
- defined(CONFIG_M527x) || defined(CONFIG_M528x) || defined(CONFIG_M532x)
-/*
- * These parts have an 'Edge' Port module (external interrupt/GPIO) which uses
- * read-modify-write to change an output and a GPIO module which has separate
- * set/clr registers to directly change outputs with a single write access.
- */
-#if defined(CONFIG_M528x)
-/*
- * The 528x also has GPIOs in other modules (GPT, QADC) which use
- * read-modify-write as well as those controlled by the EPORT and GPIO modules.
- */
-#define MCFGPIO_SCR_START 40
-#else
-#define MCFGPIO_SCR_START 8
-#endif
-
-#define MCFGPIO_SETR_PORT(gpio) (MCFGPIO_SETR + \
- mcfgpio_port(gpio - MCFGPIO_SCR_START))
-
-#define MCFGPIO_CLRR_PORT(gpio) (MCFGPIO_CLRR + \
- mcfgpio_port(gpio - MCFGPIO_SCR_START))
-#else
-
-#define MCFGPIO_SCR_START MCFGPIO_PIN_MAX
-/* with MCFGPIO_SCR == MCFGPIO_PIN_MAX, these will be optimized away */
-#define MCFGPIO_SETR_PORT(gpio) 0
-#define MCFGPIO_CLRR_PORT(gpio) 0
-
-#endif
-/*
- * Coldfire specific helper functions
- */
-
-/* return the port pin data register for a gpio */
-static inline u32 __mcf_gpio_ppdr(unsigned gpio)
-{
-#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
- defined(CONFIG_M5307) || defined(CONFIG_M5407)
- return MCFSIM_PADAT;
-#elif defined(CONFIG_M5272)
- if (gpio < 16)
- return MCFSIM_PADAT;
- else if (gpio < 32)
- return MCFSIM_PBDAT;
- else
- return MCFSIM_PCDAT;
-#elif defined(CONFIG_M5249)
- if (gpio < 32)
- return MCFSIM2_GPIOREAD;
- else
- return MCFSIM2_GPIO1READ;
-#elif defined(CONFIG_M520x) || defined(CONFIG_M523x) || \
- defined(CONFIG_M527x) || defined(CONFIG_M528x) || defined(CONFIG_M532x)
- if (gpio < 8)
- return MCFEPORT_EPPDR;
-#if defined(CONFIG_M528x)
- else if (gpio < 16)
- return MCFGPTA_GPTPORT;
- else if (gpio < 24)
- return MCFGPTB_GPTPORT;
- else if (gpio < 32)
- return MCFQADC_PORTQA;
- else if (gpio < 40)
- return MCFQADC_PORTQB;
-#endif
- else
- return MCFGPIO_PPDR + mcfgpio_port(gpio - MCFGPIO_SCR_START);
-#else
- return 0;
-#endif
-}
-
-/* return the port output data register for a gpio */
-static inline u32 __mcf_gpio_podr(unsigned gpio)
-{
-#if defined(CONFIG_M5206) || defined(CONFIG_M5206e) || \
- defined(CONFIG_M5307) || defined(CONFIG_M5407)
- return MCFSIM_PADAT;
-#elif defined(CONFIG_M5272)
- if (gpio < 16)
- return MCFSIM_PADAT;
- else if (gpio < 32)
- return MCFSIM_PBDAT;
- else
- return MCFSIM_PCDAT;
-#elif defined(CONFIG_M5249)
- if (gpio < 32)
- return MCFSIM2_GPIOWRITE;
- else
- return MCFSIM2_GPIO1WRITE;
-#elif defined(CONFIG_M520x) || defined(CONFIG_M523x) || \
- defined(CONFIG_M527x) || defined(CONFIG_M528x) || defined(CONFIG_M532x)
- if (gpio < 8)
- return MCFEPORT_EPDR;
-#if defined(CONFIG_M528x)
- else if (gpio < 16)
- return MCFGPTA_GPTPORT;
- else if (gpio < 24)
- return MCFGPTB_GPTPORT;
- else if (gpio < 32)
- return MCFQADC_PORTQA;
- else if (gpio < 40)
- return MCFQADC_PORTQB;
-#endif
- else
- return MCFGPIO_PODR + mcfgpio_port(gpio - MCFGPIO_SCR_START);
-#else
- return 0;
-#endif
-}
-
+#include <asm/mcfgpio.h>
/*
* The Generic GPIO functions
*
@@ -191,7 +30,7 @@ static inline u32 __mcf_gpio_podr(unsigned gpio)
static inline int gpio_get_value(unsigned gpio)
{
if (__builtin_constant_p(gpio) && gpio < MCFGPIO_PIN_MAX)
- return mcfgpio_read(__mcf_gpio_ppdr(gpio)) & mcfgpio_bit(gpio);
+ return mcfgpio_read(__mcfgpio_ppdr(gpio)) & mcfgpio_bit(gpio);
else
return __gpio_get_value(gpio);
}
@@ -204,12 +43,12 @@ static inline void gpio_set_value(unsigned gpio, int value)
MCFGPIO_PORTTYPE data;
local_irq_save(flags);
- data = mcfgpio_read(__mcf_gpio_podr(gpio));
+ data = mcfgpio_read(__mcfgpio_podr(gpio));
if (value)
data |= mcfgpio_bit(gpio);
else
data &= ~mcfgpio_bit(gpio);
- mcfgpio_write(data, __mcf_gpio_podr(gpio));
+ mcfgpio_write(data, __mcfgpio_podr(gpio));
local_irq_restore(flags);
} else {
if (value)
@@ -225,8 +64,14 @@ static inline void gpio_set_value(unsigned gpio, int value)
static inline int gpio_to_irq(unsigned gpio)
{
- return (gpio < MCFGPIO_IRQ_MAX) ? gpio + MCFGPIO_IRQ_VECBASE
- : __gpio_to_irq(gpio);
+#if defined(MCFGPIO_IRQ_MIN)
+ if ((gpio >= MCFGPIO_IRQ_MIN) && (gpio < MCFGPIO_IRQ_MAX))
+#else
+ if (gpio < MCFGPIO_IRQ_MAX)
+#endif
+ return gpio + MCFGPIO_IRQ_VECBASE;
+ else
+ return __gpio_to_irq(gpio);
}
static inline int irq_to_gpio(unsigned irq)