Viewing file:  etraxgpio.h (1.56 KB) -rw-r--r--
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#ifndef _ASM_ETRAXGPIO_H
#define _ASM_ETRAXGPIO_H
/* etraxgpio _IOC_TYPE, bits 8 to 15 in ioctl cmd */
#define ETRAXGPIO_IOCTYPE 43
/* supported ioctl _IOC_NR's */
#define IO_READBITS 0x1 /* read and return current port bits */
#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 */
#define IO_SETINPUT 0x9 /* Set direction 0=unchanged 1=input,
returns current dir */
#define IO_SETOUTPUT 0xA /* Set direction 0=unchanged 1=output,
returns current dir */
/* 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) )
#endif
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