pi1541/rpi-mailbox-interface.h

#ifndef RPI_MAILBOX_INTERFACE_H
#define RPI_MAILBOX_INTERFACE_H

#define PROP_BUFFER_SIZE 8192
#define PROP_SIZE        1024

typedef enum
{
	POWER_MANAGEMENT = 0,
	FRAMEBUFFER,
	VIRTUAL_UART,
	VCHIQ,
	LEDS,
	BUTTONS,
	TOUCH_SCREEN,
	UNDEFINED,
	PTAG_ARM_TO_VC,
	PTAG_VC_TO_ARM

} Channel;

/**
    @brief An enum of the RPI->Videocore firmware mailbox property interface
    properties. Further details are available from
    https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface
	Getting out of date now see;-
	https://github.com/raspberrypi/firmware/issues/719
*/
typedef enum {
	/* Videocore */
	TAG_GET_FIRMWARE_VERSION = 0x1,

	GET_GPIO_STATE = 0x00030041,
	SET_GPIO_STATE = 0x00038041,

	/* Hardware */
	TAG_GET_BOARD_MODEL = 0x10001,
	TAG_GET_BOARD_REVISION,
	TAG_GET_BOARD_MAC_ADDRESS,
	TAG_GET_BOARD_SERIAL,
	TAG_GET_ARM_MEMORY,
	TAG_GET_VC_MEMORY,
	TAG_GET_CLOCKS,

	/* Config */
	TAG_GET_COMMAND_LINE = 0x50001,

	/* Shared resource management */
	TAG_GET_DMA_CHANNELS = 0x60001,

	/* Power */
	TAG_GET_POWER_STATE = 0x20001,
	TAG_GET_TIMING,
	TAG_SET_POWER_STATE = 0x28001,

	/* Clocks */
	TAG_GET_CLOCK_STATE = 0x30001,
	TAG_SET_CLOCK_STATE = 0x38001,
	TAG_GET_CLOCK_RATE = 0x30002,
	TAG_SET_CLOCK_RATE = 0x38002,
	TAG_GET_MAX_CLOCK_RATE = 0x30004,
	TAG_GET_MIN_CLOCK_RATE = 0x30007,
	TAG_GET_TURBO = 0x30009,
	TAG_SET_TURBO = 0x38009,

	/* Voltage */
	TAG_GET_VOLTAGE = 0x30003,
	TAG_SET_VOLTAGE = 0x38003,
	TAG_GET_MAX_VOLTAGE = 0x30005,
	TAG_GET_MIN_VOLTAGE = 0x30008,
	TAG_GET_TEMPERATURE = 0x30006,
	TAG_GET_MAX_TEMPERATURE = 0x3000A,
	TAG_GET_STC = 0x3000B,
	TAG_ALLOCATE_MEMORY = 0x3000C,
	TAG_LOCK_MEMORY = 0x3000D,
	TAG_UNLOCK_MEMORY = 0x3000E,
	TAG_RELEASE_MEMORY = 0x3000F,
	TAG_EXECUTE_CODE = 0x30010,
	TAG_EXECUTE_QPU = 0x30011,
	TAG_SET_ENABLE_QPU = 0x30012,
	TAG_GET_DISPMANX_MEM_HANDLE = 0x30014,
	TAG_GET_EDID_BLOCK = 0x30020,
	TAG_GET_CUSTOMER_OTP = 0x30021,

	TAG_GET_DOMAIN_STATE = 0x30030,
	TAG_GET_GPIO_STATE = 0x30041,
	TAG_SET_GPIO_STATE = 0x38041,

	TAG_GET_GPIO_CONFIG = 0x30043,
	TAG_SET_GPIO_CONFIG = 0x38043,

	TAG_SET_CUSTOMER_OTP = 0x38021,
	TAG_SET_DOMAIN_STATE = 0x38030,
	TAG_SET_SDHOST_CLOCK = 0x38042,

	/* Framebuffer */
	TAG_ALLOCATE_BUFFER = 0x40001,
	TAG_RELEASE_BUFFER = 0x48001,
	TAG_BLANK_SCREEN = 0x40002,
	TAG_GET_PHYSICAL_SIZE = 0x40003,
	TAG_TEST_PHYSICAL_SIZE = 0x44003,
	TAG_SET_PHYSICAL_SIZE = 0x48003,
	TAG_GET_VIRTUAL_SIZE = 0x40004,
	TAG_TEST_VIRTUAL_SIZE = 0x44004,
	TAG_SET_VIRTUAL_SIZE = 0x48004,
	TAG_GET_DEPTH = 0x40005,
	TAG_TEST_DEPTH = 0x44005,
	TAG_SET_DEPTH = 0x48005,
	TAG_GET_PIXEL_ORDER = 0x40006,
	TAG_TEST_PIXEL_ORDER = 0x44006,
	TAG_SET_PIXEL_ORDER = 0x48006,
	TAG_GET_ALPHA_MODE = 0x40007,
	TAG_TEST_ALPHA_MODE = 0x44007,
	TAG_SET_ALPHA_MODE = 0x48007,
	TAG_GET_PITCH = 0x40008,
	TAG_GET_VIRTUAL_OFFSET = 0x40009,
	TAG_TEST_VIRTUAL_OFFSET = 0x44009,
	TAG_SET_VIRTUAL_OFFSET = 0x48009,
	TAG_GET_OVERSCAN = 0x4000A,
	TAG_TEST_OVERSCAN = 0x4400A,
	TAG_SET_OVERSCAN = 0x4800A,
	TAG_GET_PALETTE = 0x4000B,
	TAG_TEST_PALETTE = 0x4400B,
	TAG_SET_PALETTE = 0x4800B,

	TAG_TEST_VSYNC = 0x4400e,
	TAG_SET_VSYNC = 0x4800e,

	TAG_SET_BACKLIGHT = 0x4800f,

	TAG_GET_TOUCHBUF = 0x4000F,

	TAG_GET_GPIOVIRTBUF = 0x40010,


    TAG_SET_CURSOR_INFO = 0x8011,
    TAG_SET_CURSOR_STATE = 0x8010,

	TAG_USB = 0xB880

    } rpi_mailbox_tag_t;


typedef enum {
    TAG_STATE_REQUEST = 0,
    TAG_STATE_RESPONSE = 1,
    } rpi_tag_state_t;


typedef enum {
    PT_OSIZE = 0,
    PT_OREQUEST_OR_RESPONSE = 1,
    } rpi_tag_buffer_offset_t;

typedef enum {
    T_OIDENT = 0,
    T_OVALUE_SIZE = 1,
    T_ORESPONSE = 2,
    T_OVALUE = 3,
    } rpi_tag_offset_t;

typedef struct {
    int tag;
    int byte_length;
    union {
        int value_32;
        unsigned char buffer_8[PROP_SIZE];
        int buffer_32[PROP_SIZE >> 2];
    } data;
    } rpi_mailbox_property_t;


/* Clock ID values */
#define   RES_CLK_ID 0x000000000
#define  EMMC_CLK_ID 0x000000001 
#define  UART_CLK_ID 0x000000002 
#define   ARM_CLK_ID 0x000000003 
#define  CORE_CLK_ID 0x000000004 
#define   V3D_CLK_ID 0x000000005 
#define  H264_CLK_ID 0x000000006 
#define   ISP_CLK_ID 0x000000007 
#define SDRAM_CLK_ID 0x000000008 
#define PIXEL_CLK_ID 0x000000009 
#define   PWM_CLK_ID 0x00000000a 

#define MIN_CLK_ID  0x000000001 
#define MAX_CLK_ID  0x00000000a

extern void RPI_PropertyInit( void );
extern void RPI_PropertyAddTag( rpi_mailbox_tag_t tag, ... );
extern int RPI_PropertyProcess( void );
extern void RPI_PropertyProcessNoCheck( void );
extern rpi_mailbox_property_t* RPI_PropertyGet( rpi_mailbox_tag_t tag );
//extern void SetACTLED(int value);

#endif