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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/asm-cris/etraxgpio.h
1 /* $Id: etraxgpio.h,v 1.8 2002/06/17 15:53:07 johana Exp $ */
3 * The following devices are accessable using this driver using
4 * GPIO_MAJOR (120) and a couple of minor numbers:
5 * For ETRAX 100LX (ARCH_V10):
6 * /dev/gpioa minor 0, 8 bit GPIO, each bit can change direction
7 * /dev/gpiob minor 1, 8 bit GPIO, each bit can change direction
8 * /dev/leds minor 2, Access to leds depending on kernelconfig
10 g0dir, g8_15dir, g16_23dir, g24 dir configurable in R_GEN_CONFIG
11 g1-g7 and g25-g31 is both input and outputs but on different pins
12 Also note that some bits change pins depending on what interfaces
16 * For ETRAX FS (ARCH_V32):
17 * /dev/gpioa minor 0, 8 bit GPIO, each bit can change direction
18 * /dev/gpiob minor 1, 18 bit GPIO, each bit can change direction
19 * /dev/gpioc minor 2, 18 bit GPIO, each bit can change direction
20 * /dev/gpiod minor 3, 18 bit GPIO, each bit can change direction
21 * /dev/gpioe minor 4, 18 bit GPIO, each bit can change direction
22 * /dev/leds minor 5, Access to leds depending on kernelconfig
25 #ifndef _ASM_ETRAXGPIO_H
26 #define _ASM_ETRAXGPIO_H
28 #include <linux/config.h>
29 /* etraxgpio _IOC_TYPE, bits 8 to 15 in ioctl cmd */
30 #ifdef CONFIG_ETRAX_ARCH_V10
31 #define ETRAXGPIO_IOCTYPE 43
32 #define GPIO_MINOR_A 0
33 #define GPIO_MINOR_B 1
34 #define GPIO_MINOR_LEDS 2
35 #define GPIO_MINOR_G 3
36 #define GPIO_MINOR_LAST 3
38 #ifdef CONFIG_ETRAX_ARCH_V32
39 #define ETRAXGPIO_IOCTYPE 43
40 #define GPIO_MINOR_A 0
41 #define GPIO_MINOR_B 1
42 #define GPIO_MINOR_LEDS 2
43 #define GPIO_MINOR_C 3
44 #define GPIO_MINOR_D 4
45 #define GPIO_MINOR_E 5
46 #define GPIO_MINOR_LAST 5
49 /* supported ioctl _IOC_NR's */
51 #define IO_READBITS 0x1 /* read and return current port bits (obsolete) */
52 #define IO_SETBITS 0x2 /* set the bits marked by 1 in the argument */
53 #define IO_CLRBITS 0x3 /* clear the bits marked by 1 in the argument */
55 /* the alarm is waited for by select() */
57 #define IO_HIGHALARM 0x4 /* set alarm on high for bits marked by 1 */
58 #define IO_LOWALARM 0x5 /* set alarm on low for bits marked by 1 */
59 #define IO_CLRALARM 0x6 /* clear alarm for bits marked by 1 */
62 #define IO_LEDACTIVE_SET 0x7 /* set active led
63 * 0=off, 1=green, 2=red, 3=yellow */
65 /* GPIO direction ioctl's */
66 #define IO_READDIR 0x8 /* Read direction 0=input 1=output (obsolete) */
67 #define IO_SETINPUT 0x9 /* Set direction for bits set, 0=unchanged 1=input,
68 returns mask with current inputs (obsolete) */
69 #define IO_SETOUTPUT 0xA /* Set direction for bits set, 0=unchanged 1=output,
70 returns mask with current outputs (obsolete)*/
72 /* LED ioctl extended */
73 #define IO_LED_SETBIT 0xB
74 #define IO_LED_CLRBIT 0xC
77 #define IO_SHUTDOWN 0xD
78 #define IO_GET_PWR_BT 0xE
80 /* Bit toggling in driver settings */
81 /* bit set in low byte0 is CLK mask (0x00FF),
82 bit set in byte1 is DATA mask (0xFF00)
83 msb, data_mask[7:0] , clk_mask[7:0]
85 #define IO_CFG_WRITE_MODE 0xF
86 #define IO_CFG_WRITE_MODE_VALUE(msb, data_mask, clk_mask) \
87 ( (((msb)&1) << 16) | (((data_mask) &0xFF) << 8) | ((clk_mask) & 0xFF) )
89 /* The following 4 ioctl's take a pointer as argument and handles
90 * 32 bit ports (port G) properly.
91 * These replaces IO_READBITS,IO_SETINPUT AND IO_SETOUTPUT
93 #define IO_READ_INBITS 0x10 /* *arg is result of reading the input pins */
94 #define IO_READ_OUTBITS 0x11 /* *arg is result of reading the output shadow */
95 #define IO_SETGET_INPUT 0x12 /* bits set in *arg is set to input,
96 * *arg updated with current input pins.
98 #define IO_SETGET_OUTPUT 0x13 /* bits set in *arg is set to output,
99 * *arg updated with current output pins.