ARM Packages: Fixed line endings

[mirror_edk2.git] / EmbeddedPkg / Include / Protocol / EmbeddedGpio.h

/** @file\r
\r
  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef __EMBEDDED_GPIO_H__\r
#define __EMBEDDED_GPIO_H__\r
\r
//\r
// Protocol interface structure\r
//\r
typedef struct _EMBEDDED_GPIO   EMBEDDED_GPIO;\r
\r
//\r
// Data Types\r
//\r
typedef UINTN EMBEDDED_GPIO_PIN;\r
\r
#define GPIO(Port, Pin) ((EMBEDDED_GPIO_PIN)(((Port) << (16)) | (Pin)))\r
#define GPIO_PIN(x)     ((EMBEDDED_GPIO_PIN)(x) & (0xFFFF))\r
#define GPIO_PORT(x)    ((EMBEDDED_GPIO_PIN)(x) >> (16))\r
\r
typedef enum {\r
  GPIO_MODE_INPUT                 = 0x00,\r
  GPIO_MODE_OUTPUT_0              = 0x0E,\r
  GPIO_MODE_OUTPUT_1              = 0x0F,\r
  GPIO_MODE_SPECIAL_FUNCTION_2    = 0x02,\r
  GPIO_MODE_SPECIAL_FUNCTION_3    = 0x03,\r
  GPIO_MODE_SPECIAL_FUNCTION_4    = 0x04,\r
  GPIO_MODE_SPECIAL_FUNCTION_5    = 0x05,\r
  GPIO_MODE_SPECIAL_FUNCTION_6    = 0x06,\r
  GPIO_MODE_SPECIAL_FUNCTION_7    = 0x07\r
} EMBEDDED_GPIO_MODE;\r
\r
typedef enum {\r
  GPIO_PULL_NONE,\r
  GPIO_PULL_UP,\r
  GPIO_PULL_DOWN\r
} EMBEDDED_GPIO_PULL;\r
\r
//\r
// Function Prototypes\r
//\r
typedef\r
EFI_STATUS\r
(EFIAPI *EMBEDDED_GPIO_GET) (\r
  IN  EMBEDDED_GPIO       *This,\r
  IN  EMBEDDED_GPIO_PIN   Gpio,\r
  OUT UINTN               *Value\r
  );\r
/*++\r
\r
Routine Description:\r
\r
  Gets the state of a GPIO pin\r
\r
Arguments:\r
\r
  This  - pointer to protocol\r
  Gpio  - which pin to read\r
  Value - state of the pin\r
  \r
Returns:\r
\r
  EFI_SUCCESS - GPIO state returned in Value\r
\r
--*/\r
\r
\r
typedef\r
EFI_STATUS\r
(EFIAPI *EMBEDDED_GPIO_SET) (\r
    IN EMBEDDED_GPIO      *This,\r
    IN EMBEDDED_GPIO_PIN  Gpio,\r
    IN EMBEDDED_GPIO_MODE Mode\r
    );\r
/*++\r
\r
Routine Description:\r
\r
  Sets the state of a GPIO pin\r
\r
Arguments:\r
\r
  This  - pointer to protocol\r
  Gpio  - which pin to modify\r
  Mode  - mode to set\r
  \r
Returns:\r
\r
  EFI_SUCCESS - GPIO set as requested\r
\r
--*/\r
\r
\r
typedef\r
EFI_STATUS\r
(EFIAPI *EMBEDDED_GPIO_GET_MODE) (\r
    IN  EMBEDDED_GPIO         *This,\r
    IN  EMBEDDED_GPIO_PIN     Gpio,\r
    OUT EMBEDDED_GPIO_MODE    *Mode\r
    );\r
/*++\r
\r
Routine Description:\r
\r
  Gets the mode (function) of a GPIO pin\r
\r
Arguments:\r
\r
  This  - pointer to protocol\r
  Gpio  - which pin\r
  Mode  - pointer to output mode value\r
  \r
Returns:\r
\r
  EFI_SUCCESS - mode value retrieved\r
\r
--*/\r
\r
\r
typedef\r
EFI_STATUS\r
(EFIAPI *EMBEDDED_GPIO_SET_PULL) (\r
    IN  EMBEDDED_GPIO      *This,\r
    IN  EMBEDDED_GPIO_PIN  Gpio,\r
    IN  EMBEDDED_GPIO_PULL Direction\r
    );\r
/*++\r
\r
Routine Description:\r
\r
  Sets the pull-up / pull-down resistor of a GPIO pin\r
\r
Arguments:\r
\r
  This  - pointer to protocol\r
  Gpio  - which pin\r
  Direction - pull-up, pull-down, or none\r
  \r
Returns:\r
\r
  EFI_SUCCESS - pin was set\r
\r
--*/\r
\r
\r
\r
struct _EMBEDDED_GPIO {\r
  EMBEDDED_GPIO_GET       Get;\r
  EMBEDDED_GPIO_SET       Set;\r
  EMBEDDED_GPIO_GET_MODE  GetMode;\r
  EMBEDDED_GPIO_SET_PULL  SetPull;\r
};\r
\r
extern EFI_GUID gEmbeddedGpioProtocolGuid;\r
\r
#endif	\r