mirror of
https://github.com/torvalds/linux.git
synced 2024-11-10 22:21:40 +00:00
104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/* $Id: etraxgpio.h,v 1.8 2002/06/17 15:53:07 johana Exp $ */
|
|
/*
|
|
* The following devices are accessable using this driver using
|
|
* GPIO_MAJOR (120) and a couple of minor numbers:
|
|
* For ETRAX 100LX (ARCH_V10):
|
|
* /dev/gpioa minor 0, 8 bit GPIO, each bit can change direction
|
|
* /dev/gpiob minor 1, 8 bit GPIO, each bit can change direction
|
|
* /dev/leds minor 2, Access to leds depending on kernelconfig
|
|
* /dev/gpiog minor 3
|
|
g0dir, g8_15dir, g16_23dir, g24 dir configurable in R_GEN_CONFIG
|
|
g1-g7 and g25-g31 is both input and outputs but on different pins
|
|
Also note that some bits change pins depending on what interfaces
|
|
are enabled.
|
|
*
|
|
*
|
|
* For ETRAX FS (ARCH_V32):
|
|
* /dev/gpioa minor 0, 8 bit GPIO, each bit can change direction
|
|
* /dev/gpiob minor 1, 18 bit GPIO, each bit can change direction
|
|
* /dev/gpioc minor 2, 18 bit GPIO, each bit can change direction
|
|
* /dev/gpiod minor 3, 18 bit GPIO, each bit can change direction
|
|
* /dev/gpioe minor 4, 18 bit GPIO, each bit can change direction
|
|
* /dev/leds minor 5, Access to leds depending on kernelconfig
|
|
*
|
|
*/
|
|
#ifndef _ASM_ETRAXGPIO_H
|
|
#define _ASM_ETRAXGPIO_H
|
|
|
|
/* etraxgpio _IOC_TYPE, bits 8 to 15 in ioctl cmd */
|
|
#ifdef CONFIG_ETRAX_ARCH_V10
|
|
#define ETRAXGPIO_IOCTYPE 43
|
|
#define GPIO_MINOR_A 0
|
|
#define GPIO_MINOR_B 1
|
|
#define GPIO_MINOR_LEDS 2
|
|
#define GPIO_MINOR_G 3
|
|
#define GPIO_MINOR_LAST 3
|
|
#endif
|
|
#ifdef CONFIG_ETRAX_ARCH_V32
|
|
#define ETRAXGPIO_IOCTYPE 43
|
|
#define GPIO_MINOR_A 0
|
|
#define GPIO_MINOR_B 1
|
|
#define GPIO_MINOR_LEDS 2
|
|
#define GPIO_MINOR_C 3
|
|
#define GPIO_MINOR_D 4
|
|
#define GPIO_MINOR_E 5
|
|
#define GPIO_MINOR_LAST 5
|
|
#endif
|
|
|
|
/* supported ioctl _IOC_NR's */
|
|
|
|
#define IO_READBITS 0x1 /* read and return current port bits (obsolete) */
|
|
#define IO_SETBITS 0x2 /* set the bits marked by 1 in the argument */
|
|
#define IO_CLRBITS 0x3 /* clear the bits marked by 1 in the argument */
|
|
|
|
/* the alarm is waited for by select() */
|
|
|
|
#define IO_HIGHALARM 0x4 /* set alarm on high for bits marked by 1 */
|
|
#define IO_LOWALARM 0x5 /* set alarm on low for bits marked by 1 */
|
|
#define IO_CLRALARM 0x6 /* clear alarm for bits marked by 1 */
|
|
|
|
/* LED ioctl */
|
|
#define IO_LEDACTIVE_SET 0x7 /* set active led
|
|
* 0=off, 1=green, 2=red, 3=yellow */
|
|
|
|
/* GPIO direction ioctl's */
|
|
#define IO_READDIR 0x8 /* Read direction 0=input 1=output (obsolete) */
|
|
#define IO_SETINPUT 0x9 /* Set direction for bits set, 0=unchanged 1=input,
|
|
returns mask with current inputs (obsolete) */
|
|
#define IO_SETOUTPUT 0xA /* Set direction for bits set, 0=unchanged 1=output,
|
|
returns mask with current outputs (obsolete)*/
|
|
|
|
/* LED ioctl extended */
|
|
#define IO_LED_SETBIT 0xB
|
|
#define IO_LED_CLRBIT 0xC
|
|
|
|
/* SHUTDOWN ioctl */
|
|
#define IO_SHUTDOWN 0xD
|
|
#define IO_GET_PWR_BT 0xE
|
|
|
|
/* Bit toggling in driver settings */
|
|
/* bit set in low byte0 is CLK mask (0x00FF),
|
|
bit set in byte1 is DATA mask (0xFF00)
|
|
msb, data_mask[7:0] , clk_mask[7:0]
|
|
*/
|
|
#define IO_CFG_WRITE_MODE 0xF
|
|
#define IO_CFG_WRITE_MODE_VALUE(msb, data_mask, clk_mask) \
|
|
( (((msb)&1) << 16) | (((data_mask) &0xFF) << 8) | ((clk_mask) & 0xFF) )
|
|
|
|
/* The following 4 ioctl's take a pointer as argument and handles
|
|
* 32 bit ports (port G) properly.
|
|
* These replaces IO_READBITS,IO_SETINPUT AND IO_SETOUTPUT
|
|
*/
|
|
#define IO_READ_INBITS 0x10 /* *arg is result of reading the input pins */
|
|
#define IO_READ_OUTBITS 0x11 /* *arg is result of reading the output shadow */
|
|
#define IO_SETGET_INPUT 0x12 /* bits set in *arg is set to input,
|
|
* *arg updated with current input pins.
|
|
*/
|
|
#define IO_SETGET_OUTPUT 0x13 /* bits set in *arg is set to output,
|
|
* *arg updated with current output pins.
|
|
*/
|
|
|
|
|
|
|
|
#endif
|