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1da177e4 LT |
1 | /* $Id: etraxgpio.h,v 1.8 2002/06/17 15:53:07 johana Exp $ */ |
2 | /* | |
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 | |
9 | * /dev/gpiog minor 3 | |
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 | |
13 | are enabled. | |
14 | * | |
15 | * | |
cb09f540 | 16 | * For ETRAX FS (ARCH_V32): |
1da177e4 LT |
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 | |
23 | * | |
24 | */ | |
25 | #ifndef _ASM_ETRAXGPIO_H | |
26 | #define _ASM_ETRAXGPIO_H | |
27 | ||
1da177e4 LT |
28 | /* etraxgpio _IOC_TYPE, bits 8 to 15 in ioctl cmd */ |
29 | #ifdef CONFIG_ETRAX_ARCH_V10 | |
30 | #define ETRAXGPIO_IOCTYPE 43 | |
31 | #define GPIO_MINOR_A 0 | |
32 | #define GPIO_MINOR_B 1 | |
33 | #define GPIO_MINOR_LEDS 2 | |
34 | #define GPIO_MINOR_G 3 | |
35 | #define GPIO_MINOR_LAST 3 | |
36 | #endif | |
37 | #ifdef CONFIG_ETRAX_ARCH_V32 | |
38 | #define ETRAXGPIO_IOCTYPE 43 | |
39 | #define GPIO_MINOR_A 0 | |
40 | #define GPIO_MINOR_B 1 | |
cb09f540 MS |
41 | #define GPIO_MINOR_LEDS 2 |
42 | #define GPIO_MINOR_C 3 | |
43 | #define GPIO_MINOR_D 4 | |
44 | #define GPIO_MINOR_E 5 | |
1da177e4 LT |
45 | #define GPIO_MINOR_LAST 5 |
46 | #endif | |
47 | ||
48 | /* supported ioctl _IOC_NR's */ | |
49 | ||
50 | #define IO_READBITS 0x1 /* read and return current port bits (obsolete) */ | |
51 | #define IO_SETBITS 0x2 /* set the bits marked by 1 in the argument */ | |
52 | #define IO_CLRBITS 0x3 /* clear the bits marked by 1 in the argument */ | |
53 | ||
54 | /* the alarm is waited for by select() */ | |
55 | ||
56 | #define IO_HIGHALARM 0x4 /* set alarm on high for bits marked by 1 */ | |
57 | #define IO_LOWALARM 0x5 /* set alarm on low for bits marked by 1 */ | |
58 | #define IO_CLRALARM 0x6 /* clear alarm for bits marked by 1 */ | |
59 | ||
60 | /* LED ioctl */ | |
61 | #define IO_LEDACTIVE_SET 0x7 /* set active led | |
62 | * 0=off, 1=green, 2=red, 3=yellow */ | |
63 | ||
64 | /* GPIO direction ioctl's */ | |
65 | #define IO_READDIR 0x8 /* Read direction 0=input 1=output (obsolete) */ | |
66 | #define IO_SETINPUT 0x9 /* Set direction for bits set, 0=unchanged 1=input, | |
67 | returns mask with current inputs (obsolete) */ | |
68 | #define IO_SETOUTPUT 0xA /* Set direction for bits set, 0=unchanged 1=output, | |
69 | returns mask with current outputs (obsolete)*/ | |
70 | ||
71 | /* LED ioctl extended */ | |
72 | #define IO_LED_SETBIT 0xB | |
73 | #define IO_LED_CLRBIT 0xC | |
74 | ||
75 | /* SHUTDOWN ioctl */ | |
76 | #define IO_SHUTDOWN 0xD | |
77 | #define IO_GET_PWR_BT 0xE | |
78 | ||
79 | /* Bit toggling in driver settings */ | |
80 | /* bit set in low byte0 is CLK mask (0x00FF), | |
81 | bit set in byte1 is DATA mask (0xFF00) | |
82 | msb, data_mask[7:0] , clk_mask[7:0] | |
83 | */ | |
84 | #define IO_CFG_WRITE_MODE 0xF | |
85 | #define IO_CFG_WRITE_MODE_VALUE(msb, data_mask, clk_mask) \ | |
86 | ( (((msb)&1) << 16) | (((data_mask) &0xFF) << 8) | ((clk_mask) & 0xFF) ) | |
87 | ||
88 | /* The following 4 ioctl's take a pointer as argument and handles | |
89 | * 32 bit ports (port G) properly. | |
90 | * These replaces IO_READBITS,IO_SETINPUT AND IO_SETOUTPUT | |
91 | */ | |
92 | #define IO_READ_INBITS 0x10 /* *arg is result of reading the input pins */ | |
93 | #define IO_READ_OUTBITS 0x11 /* *arg is result of reading the output shadow */ | |
94 | #define IO_SETGET_INPUT 0x12 /* bits set in *arg is set to input, | |
95 | * *arg updated with current input pins. | |
96 | */ | |
97 | #define IO_SETGET_OUTPUT 0x13 /* bits set in *arg is set to output, | |
98 | * *arg updated with current output pins. | |
99 | */ | |
100 | ||
101 | ||
102 | ||
103 | #endif |