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Diffstat (limited to 'include/asm-cris/etraxgpio.h')
| -rw-r--r-- | include/asm-cris/etraxgpio.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/include/asm-cris/etraxgpio.h b/include/asm-cris/etraxgpio.h new file mode 100644 index 0000000..cf04af9 --- /dev/null +++ b/include/asm-cris/etraxgpio.h @@ -0,0 +1,104 @@ +/* $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 200 (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 + +#include <linux/config.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_C 2 +#define GPIO_MINOR_D 3 +#define GPIO_MINOR_E 4 +#define GPIO_MINOR_LEDS 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 |
