include/linux/mfd/wm831x/gpio.h

Source file repositories/reference/linux-study-clean/include/linux/mfd/wm831x/gpio.h

File Facts

System
Linux kernel
Corpus path
include/linux/mfd/wm831x/gpio.h
Extension
.h
Size
2991 bytes
Lines
55
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __MFD_WM831X_GPIO_H__
#define __MFD_WM831X_GPIO_H__

/*
 * R16440-16455 (0x4038-0x4047) - GPIOx Control
 */
#define WM831X_GPN_DIR                          0x8000  /* GPN_DIR */
#define WM831X_GPN_DIR_MASK                     0x8000  /* GPN_DIR */
#define WM831X_GPN_DIR_SHIFT                        15  /* GPN_DIR */
#define WM831X_GPN_DIR_WIDTH                         1  /* GPN_DIR */
#define WM831X_GPN_PULL_MASK                    0x6000  /* GPN_PULL - [14:13] */
#define WM831X_GPN_PULL_SHIFT                       13  /* GPN_PULL - [14:13] */
#define WM831X_GPN_PULL_WIDTH                        2  /* GPN_PULL - [14:13] */
#define WM831X_GPN_INT_MODE                     0x1000  /* GPN_INT_MODE */
#define WM831X_GPN_INT_MODE_MASK                0x1000  /* GPN_INT_MODE */
#define WM831X_GPN_INT_MODE_SHIFT                   12  /* GPN_INT_MODE */
#define WM831X_GPN_INT_MODE_WIDTH                    1  /* GPN_INT_MODE */
#define WM831X_GPN_PWR_DOM                      0x0800  /* GPN_PWR_DOM */
#define WM831X_GPN_PWR_DOM_MASK                 0x0800  /* GPN_PWR_DOM */
#define WM831X_GPN_PWR_DOM_SHIFT                    11  /* GPN_PWR_DOM */
#define WM831X_GPN_PWR_DOM_WIDTH                     1  /* GPN_PWR_DOM */
#define WM831X_GPN_POL                          0x0400  /* GPN_POL */
#define WM831X_GPN_POL_MASK                     0x0400  /* GPN_POL */
#define WM831X_GPN_POL_SHIFT                        10  /* GPN_POL */
#define WM831X_GPN_POL_WIDTH                         1  /* GPN_POL */
#define WM831X_GPN_OD                           0x0200  /* GPN_OD */
#define WM831X_GPN_OD_MASK                      0x0200  /* GPN_OD */
#define WM831X_GPN_OD_SHIFT                          9  /* GPN_OD */
#define WM831X_GPN_OD_WIDTH                          1  /* GPN_OD */
#define WM831X_GPN_ENA                          0x0080  /* GPN_ENA */
#define WM831X_GPN_ENA_MASK                     0x0080  /* GPN_ENA */
#define WM831X_GPN_ENA_SHIFT                         7  /* GPN_ENA */
#define WM831X_GPN_ENA_WIDTH                         1  /* GPN_ENA */
#define WM831X_GPN_TRI                          0x0080  /* GPN_TRI */
#define WM831X_GPN_TRI_MASK                     0x0080  /* GPN_TRI */
#define WM831X_GPN_TRI_SHIFT                         7  /* GPN_TRI */
#define WM831X_GPN_TRI_WIDTH                         1  /* GPN_TRI */
#define WM831X_GPN_FN_MASK                      0x000F  /* GPN_FN - [3:0] */
#define WM831X_GPN_FN_SHIFT                          0  /* GPN_FN - [3:0] */
#define WM831X_GPN_FN_WIDTH                          4  /* GPN_FN - [3:0] */

#define WM831X_GPIO_PULL_NONE (0 << WM831X_GPN_PULL_SHIFT)
#define WM831X_GPIO_PULL_DOWN (1 << WM831X_GPN_PULL_SHIFT)
#define WM831X_GPIO_PULL_UP   (2 << WM831X_GPN_PULL_SHIFT)
#endif

Annotation

Implementation Notes