gpio-max732x.c File Reference

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/gpio.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/i2c/max732x.h>

Go to the source code of this file.

Data Structures
struct	max732x_chip

Macros
#define	PORT_NONE   0x0 /* '/' No Port */
#define	PORT_OUTPUT   0x1 /* 'O' Push-Pull, Output Only */
#define	PORT_INPUT   0x2 /* 'I' Input Only */
#define	PORT_OPENDRAIN   0x3 /* 'P' Open-Drain, I/O */
#define	IO_4I4O   0x5AA5 /* O7 O6 I5 I4 I3 I2 O1 O0 */
#define	IO_4P4O   0x5FF5 /* O7 O6 P5 P4 P3 P2 O1 O0 */
#define	IO_8I   0xAAAA /* I7 I6 I5 I4 I3 I2 I1 I0 */
#define	IO_8P   0xFFFF /* P7 P6 P5 P4 P3 P2 P1 P0 */
#define	IO_8O   0x5555 /* O7 O6 O5 O4 O3 O2 O1 O0 */
#define	GROUP_A(x)   ((x) & 0xffff) /* I2C Addr: 0b'110xxxx */
#define	GROUP_B(x)   ((x) << 16) /* I2C Addr: 0b'101xxxx */
#define	INT_NONE   0x0 /* No interrupt capability */
#define	INT_NO_MASK   0x1 /* Has interrupts, no mask */
#define	INT_INDEP_MASK   0x2 /* Has interrupts, independent mask */
#define	INT_MERGED_MASK   0x3 /* Has interrupts, merged mask */
#define	INT_CAPS(x)   (((uint64_t)(x)) << 32)

Enumerations
enum	{   MAX7319, MAX7320, MAX7321, MAX7322,   MAX7323, MAX7324, MAX7325, MAX7326,   MAX7327 }

Functions
	MODULE_DEVICE_TABLE (i2c, max732x_id)
	subsys_initcall (max732x_init)
	module_exit (max732x_exit)
	MODULE_AUTHOR ("Eric Miao <[email protected]>")
	MODULE_DESCRIPTION ("GPIO expander driver for MAX732X")
	MODULE_LICENSE ("GPL")

Macro Definition Documentation

#define GROUP_A

(

x

)

((x) & 0xffff) /* I2C Addr: 0b'110xxxx */

Definition at line 71 of file gpio-max732x.c.

#define GROUP_B

(

x

)

((x) << 16) /* I2C Addr: 0b'101xxxx */

Definition at line 72 of file gpio-max732x.c.

#define INT_CAPS

(

x

)

(((uint64_t)(x)) << 32)

Definition at line 79 of file gpio-max732x.c.

#define INT_INDEP_MASK   0x2 /* Has interrupts, independent mask */

Definition at line 76 of file gpio-max732x.c.

#define INT_MERGED_MASK   0x3 /* Has interrupts, merged mask */

Definition at line 77 of file gpio-max732x.c.

#define INT_NO_MASK   0x1 /* Has interrupts, no mask */

Definition at line 75 of file gpio-max732x.c.

#define INT_NONE   0x0 /* No interrupt capability */

Definition at line 74 of file gpio-max732x.c.

#define IO_4I4O   0x5AA5 /* O7 O6 I5 I4 I3 I2 O1 O0 */

Definition at line 65 of file gpio-max732x.c.

#define IO_4P4O   0x5FF5 /* O7 O6 P5 P4 P3 P2 O1 O0 */

Definition at line 66 of file gpio-max732x.c.

#define IO_8I   0xAAAA /* I7 I6 I5 I4 I3 I2 I1 I0 */

Definition at line 67 of file gpio-max732x.c.

#define IO_8O   0x5555 /* O7 O6 O5 O4 O3 O2 O1 O0 */

Definition at line 69 of file gpio-max732x.c.

#define IO_8P   0xFFFF /* P7 P6 P5 P4 P3 P2 P1 P0 */

Definition at line 68 of file gpio-max732x.c.

#define PORT_INPUT   0x2 /* 'I' Input Only */

Definition at line 62 of file gpio-max732x.c.

#define PORT_NONE   0x0 /* '/' No Port */

Definition at line 60 of file gpio-max732x.c.

#define PORT_OPENDRAIN   0x3 /* 'P' Open-Drain, I/O */

Definition at line 63 of file gpio-max732x.c.

#define PORT_OUTPUT   0x1 /* 'O' Push-Pull, Output Only */

Definition at line 61 of file gpio-max732x.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

MAX7319
MAX7320
MAX7321
MAX7322
MAX7323
MAX7324
MAX7325
MAX7326
MAX7327

Definition at line 81 of file gpio-max732x.c.

Function Documentation

MODULE_AUTHOR

(

"Eric Miao <[email protected]>"

)

MODULE_DESCRIPTION

(

"GPIO expander driver for MAX732X"

)

MODULE_DEVICE_TABLE	(	i2c	,
		max732x_id
	)

module_exit

(

max732x_exit

)

MODULE_LICENSE

(

"GPL"

)

subsys_initcall

(

max732x_init

)