Quelle gpio-au1000.h
Sprache: C
/*
* GPIO functions for Au1000 , Au1500 , Au1100 , Au1550 , Au1200
*
* Copyright ( c ) 2009 Manuel Lauss .
*
* Licensed under the terms outlined in the file COPYING .
*/
#ifndef _ALCHEMY_GPIO_AU1000_H_
#define _ALCHEMY_GPIO_AU1000_H_
#include <asm /mach-au1x00/au1000.h>
/* The default GPIO numberspace as documented in the Alchemy manuals.
* GPIO0 - 31 from GPIO1 block , GPIO200 - 215 from GPIO2 block .
*/
#define ALCHEMY_GPIO1_BASE 0
#define ALCHEMY_GPIO2_BASE 200
#define ALCHEMY_GPIO1_NUM 32
#define ALCHEMY_GPIO2_NUM 16
#define ALCHEMY_GPIO1_MAX (ALCHEMY_GPIO1_BASE + ALCHEMY_GPIO1_NUM - 1 )
#define ALCHEMY_GPIO2_MAX (ALCHEMY_GPIO2_BASE + ALCHEMY_GPIO2_NUM - 1 )
#define MAKE_IRQ(intc, off) (AU1000_INTC## intc## _INT_BASE + (off))
/* GPIO1 registers within SYS_ area */
#define AU1000_SYS_TRIOUTRD 0 x100
#define AU1000_SYS_TRIOUTCLR 0 x100
#define AU1000_SYS_OUTPUTRD 0 x108
#define AU1000_SYS_OUTPUTSET 0 x108
#define AU1000_SYS_OUTPUTCLR 0 x10C
#define AU1000_SYS_PINSTATERD 0 x110
#define AU1000_SYS_PININPUTEN 0 x110
/* register offsets within GPIO2 block */
#define AU1000_GPIO2_DIR 0 x00
#define AU1000_GPIO2_OUTPUT 0 x08
#define AU1000_GPIO2_PINSTATE 0 x0C
#define AU1000_GPIO2_INTENABLE 0 x10
#define AU1000_GPIO2_ENABLE 0 x14
struct gpio;
static inline int au1000_gpio1_to_irq(int gpio)
{
return MAKE_IRQ(1 , gpio - ALCHEMY_GPIO1_BASE);
}
static inline int au1000_gpio2_to_irq(int gpio)
{
return -ENXIO;
}
static inline int au1000_irq_to_gpio(int irq)
{
if ((irq >= AU1000_GPIO0_INT) && (irq <= AU1000_GPIO31_INT))
return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO0_INT) + 0 ;
return -ENXIO;
}
static inline int au1500_gpio1_to_irq(int gpio)
{
gpio -= ALCHEMY_GPIO1_BASE;
switch (gpio) {
case 0 ... 15 :
case 20 :
case 23 ... 28 : return MAKE_IRQ(1 , gpio);
}
return -ENXIO;
}
static inline int au1500_gpio2_to_irq(int gpio)
{
gpio -= ALCHEMY_GPIO2_BASE;
switch (gpio) {
case 0 ... 3 : return MAKE_IRQ(1 , 16 + gpio - 0 );
case 4 ... 5 : return MAKE_IRQ(1 , 21 + gpio - 4 );
case 6 ... 7 : return MAKE_IRQ(1 , 29 + gpio - 6 );
}
return -ENXIO;
}
static inline int au1500_irq_to_gpio(int irq)
{
switch (irq) {
case AU1500_GPIO0_INT ... AU1500_GPIO15_INT:
case AU1500_GPIO20_INT:
case AU1500_GPIO23_INT ... AU1500_GPIO28_INT:
return ALCHEMY_GPIO1_BASE + (irq - AU1500_GPIO0_INT) + 0 ;
case AU1500_GPIO200_INT ... AU1500_GPIO203_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO200_INT) + 0 ;
case AU1500_GPIO204_INT ... AU1500_GPIO205_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO204_INT) + 4 ;
case AU1500_GPIO206_INT ... AU1500_GPIO207_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO206_INT) + 6 ;
case AU1500_GPIO208_215_INT:
return ALCHEMY_GPIO2_BASE + 8 ;
}
return -ENXIO;
}
static inline int au1100_gpio1_to_irq(int gpio)
{
return MAKE_IRQ(1 , gpio - ALCHEMY_GPIO1_BASE);
}
static inline int au1100_gpio2_to_irq(int gpio)
{
gpio -= ALCHEMY_GPIO2_BASE;
if ((gpio >= 8 ) && (gpio <= 15 ))
return MAKE_IRQ(0 , 29 ); /* shared GPIO208_215 */
return -ENXIO;
}
static inline int au1100_irq_to_gpio(int irq)
{
switch (irq) {
case AU1100_GPIO0_INT ... AU1100_GPIO31_INT:
return ALCHEMY_GPIO1_BASE + (irq - AU1100_GPIO0_INT) + 0 ;
case AU1100_GPIO208_215_INT:
return ALCHEMY_GPIO2_BASE + 8 ;
}
return -ENXIO;
}
static inline int au1550_gpio1_to_irq(int gpio)
{
gpio -= ALCHEMY_GPIO1_BASE;
switch (gpio) {
case 0 ... 15 :
case 20 ... 28 : return MAKE_IRQ(1 , gpio);
case 16 ... 17 : return MAKE_IRQ(1 , 18 + gpio - 16 );
}
return -ENXIO;
}
static inline int au1550_gpio2_to_irq(int gpio)
{
gpio -= ALCHEMY_GPIO2_BASE;
switch (gpio) {
case 0 : return MAKE_IRQ(1 , 16 );
case 1 ... 5 : return MAKE_IRQ(1 , 17 ); /* shared GPIO201_205 */
case 6 ... 7 : return MAKE_IRQ(1 , 29 + gpio - 6 );
case 8 ... 15 : return MAKE_IRQ(1 , 31 ); /* shared GPIO208_215 */
}
return -ENXIO;
}
static inline int au1550_irq_to_gpio(int irq)
{
switch (irq) {
case AU1550_GPIO0_INT ... AU1550_GPIO15_INT:
return ALCHEMY_GPIO1_BASE + (irq - AU1550_GPIO0_INT) + 0 ;
case AU1550_GPIO200_INT:
case AU1550_GPIO201_205_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1550_GPIO200_INT) + 0 ;
case AU1550_GPIO16_INT ... AU1550_GPIO28_INT:
return ALCHEMY_GPIO1_BASE + (irq - AU1550_GPIO16_INT) + 16 ;
case AU1550_GPIO206_INT ... AU1550_GPIO208_215_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1550_GPIO206_INT) + 6 ;
}
return -ENXIO;
}
static inline int au1200_gpio1_to_irq(int gpio)
{
return MAKE_IRQ(1 , gpio - ALCHEMY_GPIO1_BASE);
}
static inline int au1200_gpio2_to_irq(int gpio)
{
gpio -= ALCHEMY_GPIO2_BASE;
switch (gpio) {
case 0 ... 2 : return MAKE_IRQ(0 , 5 + gpio - 0 );
case 3 : return MAKE_IRQ(0 , 22 );
case 4 ... 7 : return MAKE_IRQ(0 , 24 + gpio - 4 );
case 8 ... 15 : return MAKE_IRQ(0 , 28 ); /* shared GPIO208_215 */
}
return -ENXIO;
}
static inline int au1200_irq_to_gpio(int irq)
{
switch (irq) {
case AU1200_GPIO0_INT ... AU1200_GPIO31_INT:
return ALCHEMY_GPIO1_BASE + (irq - AU1200_GPIO0_INT) + 0 ;
case AU1200_GPIO200_INT ... AU1200_GPIO202_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1200_GPIO200_INT) + 0 ;
case AU1200_GPIO203_INT:
return ALCHEMY_GPIO2_BASE + 3 ;
case AU1200_GPIO204_INT ... AU1200_GPIO208_215_INT:
return ALCHEMY_GPIO2_BASE + (irq - AU1200_GPIO204_INT) + 4 ;
}
return -ENXIO;
}
/*
* GPIO1 block macros for common linux gpio functions .
*/
static inline void alchemy_gpio1_set_value(int gpio, int v)
{
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE);
unsigned long r = v ? AU1000_SYS_OUTPUTSET : AU1000_SYS_OUTPUTCLR;
alchemy_wrsys(mask, r);
}
static inline int alchemy_gpio1_get_value(int gpio)
{
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE);
return alchemy_rdsys(AU1000_SYS_PINSTATERD) & mask;
}
static inline int alchemy_gpio1_direction_input(int gpio)
{
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE);
alchemy_wrsys(mask, AU1000_SYS_TRIOUTCLR);
return 0 ;
}
static inline int alchemy_gpio1_direction_output(int gpio, int v)
{
/* hardware switches to "output" mode when one of the two
* " set_value " registers is accessed .
*/
alchemy_gpio1_set_value(gpio, v);
return 0 ;
}
static inline int alchemy_gpio1_is_valid(int gpio)
{
return ((gpio >= ALCHEMY_GPIO1_BASE) && (gpio <= ALCHEMY_GPIO1_MAX));
}
static inline int alchemy_gpio1_to_irq(int gpio)
{
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1000:
return au1000_gpio1_to_irq(gpio);
case ALCHEMY_CPU_AU1100:
return au1100_gpio1_to_irq(gpio);
case ALCHEMY_CPU_AU1500:
return au1500_gpio1_to_irq(gpio);
case ALCHEMY_CPU_AU1550:
return au1550_gpio1_to_irq(gpio);
case ALCHEMY_CPU_AU1200:
return au1200_gpio1_to_irq(gpio);
}
return -ENXIO;
}
/* On Au1000, Au1500 and Au1100 GPIOs won't work as inputs before
* SYS_PININPUTEN is written to at least once . On Au1550 / Au1200 / Au1300 this
* register enables use of GPIOs as wake source .
*/
static inline void alchemy_gpio1_input_enable(void )
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_SYS_PHYS_ADDR);
__raw_writel(0 , base + 0 x110); /* the write op is key */
wmb();
}
/*
* GPIO2 block macros for common linux GPIO functions . The ' gpio '
* parameter must be in range of ALCHEMY_GPIO2_BASE . . ALCHEMY_GPIO2_MAX .
*/
static inline void __alchemy_gpio2_mod_dir(int gpio, int to_out)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
unsigned long mask = 1 << (gpio - ALCHEMY_GPIO2_BASE);
unsigned long d = __raw_readl(base + AU1000_GPIO2_DIR);
if (to_out)
d |= mask;
else
d &= ~mask;
__raw_writel(d, base + AU1000_GPIO2_DIR);
wmb();
}
static inline void alchemy_gpio2_set_value(int gpio, int v)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
unsigned long mask;
mask = ((v) ? 0 x00010001 : 0 x00010000) << (gpio - ALCHEMY_GPIO2_BASE);
__raw_writel(mask, base + AU1000_GPIO2_OUTPUT);
wmb();
}
static inline int alchemy_gpio2_get_value(int gpio)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
return __raw_readl(base + AU1000_GPIO2_PINSTATE) &
(1 << (gpio - ALCHEMY_GPIO2_BASE));
}
static inline int alchemy_gpio2_direction_input(int gpio)
{
unsigned long flags;
local_irq_save(flags);
__alchemy_gpio2_mod_dir(gpio, 0 );
local_irq_restore(flags);
return 0 ;
}
static inline int alchemy_gpio2_direction_output(int gpio, int v)
{
unsigned long flags;
alchemy_gpio2_set_value(gpio, v);
local_irq_save(flags);
__alchemy_gpio2_mod_dir(gpio, 1 );
local_irq_restore(flags);
return 0 ;
}
static inline int alchemy_gpio2_is_valid(int gpio)
{
return ((gpio >= ALCHEMY_GPIO2_BASE) && (gpio <= ALCHEMY_GPIO2_MAX));
}
static inline int alchemy_gpio2_to_irq(int gpio)
{
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1000:
return au1000_gpio2_to_irq(gpio);
case ALCHEMY_CPU_AU1100:
return au1100_gpio2_to_irq(gpio);
case ALCHEMY_CPU_AU1500:
return au1500_gpio2_to_irq(gpio);
case ALCHEMY_CPU_AU1550:
return au1550_gpio2_to_irq(gpio);
case ALCHEMY_CPU_AU1200:
return au1200_gpio2_to_irq(gpio);
}
return -ENXIO;
}
/**********************************************************************/
/* GPIO2 shared interrupts and control */
static inline void __alchemy_gpio2_mod_int(int gpio2, int en)
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
unsigned long r = __raw_readl(base + AU1000_GPIO2_INTENABLE);
if (en)
r |= 1 << gpio2;
else
r &= ~(1 << gpio2);
__raw_writel(r, base + AU1000_GPIO2_INTENABLE);
wmb();
}
/**
* alchemy_gpio2_enable_int - Enable a GPIO2 pins ' shared irq contribution .
* @ gpio2 : The GPIO2 pin to activate ( 200 . . . 215 ) .
*
* GPIO208 - 215 have one shared interrupt line to the INTC . They are
* and ' ed with a per - pin enable bit and finally or ' ed together to form
* a single irq request ( useful for active - high sources ) .
* With this function , a pins ' individual contribution to the int request
* can be enabled . As with all other GPIO - based interrupts , the INTC
* must be programmed to accept the GPIO208_215 interrupt as well .
*
* NOTE : Calling this macro is only necessary for GPIO208 - 215 ; all other
* GPIO2 - based interrupts have their own request to the INTC . Please
* consult your Alchemy databook for more information !
*
* NOTE : On the Au1550 , GPIOs 201 - 205 also have a shared interrupt request
* line to the INTC , GPIO201_205 . This function can be used for those
* as well .
*
* NOTE : ' gpio2 ' parameter must be in range of the GPIO2 numberspace
* ( 200 - 215 by default ) . No sanity checks are made ,
*/
static inline void alchemy_gpio2_enable_int(int gpio2)
{
unsigned long flags;
gpio2 -= ALCHEMY_GPIO2_BASE;
/* Au1100/Au1500 have GPIO208-215 enable bits at 0..7 */
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1100:
case ALCHEMY_CPU_AU1500:
gpio2 -= 8 ;
}
local_irq_save(flags);
__alchemy_gpio2_mod_int(gpio2, 1 );
local_irq_restore(flags);
}
/**
* alchemy_gpio2_disable_int - Disable a GPIO2 pins ' shared irq contribution .
* @ gpio2 : The GPIO2 pin to activate ( 200 . . . 215 ) .
*
* see function alchemy_gpio2_enable_int ( ) for more information .
*/
static inline void alchemy_gpio2_disable_int(int gpio2)
{
unsigned long flags;
gpio2 -= ALCHEMY_GPIO2_BASE;
/* Au1100/Au1500 have GPIO208-215 enable bits at 0..7 */
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1100:
case ALCHEMY_CPU_AU1500:
gpio2 -= 8 ;
}
local_irq_save(flags);
__alchemy_gpio2_mod_int(gpio2, 0 );
local_irq_restore(flags);
}
/**
* alchemy_gpio2_enable - Activate GPIO2 block .
*
* The GPIO2 block must be enabled explicitly to work . On systems
* where this isn ' t done by the bootloader , this macro can be used .
*/
static inline void alchemy_gpio2_enable(void )
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
__raw_writel(3 , base + AU1000_GPIO2_ENABLE); /* reset, clock enabled */
wmb();
__raw_writel(1 , base + AU1000_GPIO2_ENABLE); /* clock enabled */
wmb();
}
/**
* alchemy_gpio2_disable - disable GPIO2 block .
*
* Disable and put GPIO2 block in low - power mode .
*/
static inline void alchemy_gpio2_disable(void )
{
void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR);
__raw_writel(2 , base + AU1000_GPIO2_ENABLE); /* reset, clock disabled */
wmb();
}
/**********************************************************************/
/* wrappers for on-chip gpios; can be used before gpio chips have been
* registered with gpiolib .
*/
static inline int alchemy_gpio_direction_input(int gpio)
{
return (gpio >= ALCHEMY_GPIO2_BASE) ?
alchemy_gpio2_direction_input(gpio) :
alchemy_gpio1_direction_input(gpio);
}
static inline int alchemy_gpio_direction_output(int gpio, int v)
{
return (gpio >= ALCHEMY_GPIO2_BASE) ?
alchemy_gpio2_direction_output(gpio, v) :
alchemy_gpio1_direction_output(gpio, v);
}
static inline int alchemy_gpio_get_value(int gpio)
{
return (gpio >= ALCHEMY_GPIO2_BASE) ?
alchemy_gpio2_get_value(gpio) :
alchemy_gpio1_get_value(gpio);
}
static inline void alchemy_gpio_set_value(int gpio, int v)
{
if (gpio >= ALCHEMY_GPIO2_BASE)
alchemy_gpio2_set_value(gpio, v);
else
alchemy_gpio1_set_value(gpio, v);
}
static inline int alchemy_gpio_is_valid(int gpio)
{
return (gpio >= ALCHEMY_GPIO2_BASE) ?
alchemy_gpio2_is_valid(gpio) :
alchemy_gpio1_is_valid(gpio);
}
static inline int alchemy_gpio_to_irq(int gpio)
{
return (gpio >= ALCHEMY_GPIO2_BASE) ?
alchemy_gpio2_to_irq(gpio) :
alchemy_gpio1_to_irq(gpio);
}
static inline int alchemy_irq_to_gpio(int irq)
{
switch (alchemy_get_cputype()) {
case ALCHEMY_CPU_AU1000:
return au1000_irq_to_gpio(irq);
case ALCHEMY_CPU_AU1100:
return au1100_irq_to_gpio(irq);
case ALCHEMY_CPU_AU1500:
return au1500_irq_to_gpio(irq);
case ALCHEMY_CPU_AU1550:
return au1550_irq_to_gpio(irq);
case ALCHEMY_CPU_AU1200:
return au1200_irq_to_gpio(irq);
}
return -ENXIO;
}
#endif /* _ALCHEMY_GPIO_AU1000_H_ */
Messung V0.5 in Prozent C=95 H=100 G=97
¤ Dauer der Verarbeitung: 0.13 Sekunden
(vorverarbeitet am 2026-10-02)
¤
*© Formatika GbR, Deutschland
2026-10-10
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