|
|
/***************************************************************************
** ******************************************* * Copyright (c) 1997, Cirrus Logic, Inc. ** * All Rights Reserved ** ******************************************** PROJECT: Laguna (CL-GD546X) - ** FILE: pwrmgr.c** AUTHOR: Benny Ng** DESCRIPTION:* This module contains Power manager code for both* Laguna Win95 and NT drivers.** MODULES:* LgPM_SetHwModuleState()* LgPM_GetHwModuleState()** REVISION HISTORY:* $Log: X:/log/laguna/powermgr/src/pwrmgr.c $* * Rev 1.3 20 Jun 1997 13:37:16 bennyn* * Moved power manager functions to Miniport* * Rev 1.2 23 Apr 1997 08:01:42 SueS* Enable MMIO access to PCI configuration registers before VS_Clk_Control* and VS_Control are referenced. Disable MMIO access after they're* referenced.* * Rev 1.1 23 Jan 1997 16:29:28 bennyn* Use bit-11 instead of bit-15 to enable VS_CLK_CNTL* * Rev 1.0 16 Jan 1997 11:48:20 bennyn* Initial revision.* *********************************************************************************************************************************************************/
#include "precomp.h"
#include "clioctl.h"
#if defined WINNT_VER35 // WINNT_VER35
// If WinNT 3.5 skip all the source code
#else
/*----------------------------- INCLUDES ----------------------------------*/#ifndef WINNT_VER40
#include <pwrmgr.h>
#endif
/*----------------------------- DEFINES -----------------------------------*/
/*--------------------- STATIC FUNCTION PROTOTYPES ------------------------*/
/*--------------------------- ENUMERATIONS --------------------------------*/
/*----------------------------- TYPEDEFS ----------------------------------*/
/*-------------------------- STATIC VARIABLES -----------------------------*/ /*-------------------------- GLOBAL FUNCTIONS -----------------------------*/ /****************************************************************************
* FUNCTION NAME: LgPM_SetHwModuleState()** DESCRIPTION: This routine validates the request for any conflict between* the request and the current chip operation. If it is valid,* it will enable or disable the specified HW module by turning* on or off appropriate HW clocks and returns TRUE. If it is * invalid or there is a conflict to the current chip operation,* it ignores the request and return FAIL.** Input:* hwmod - can be one of the following HW modules* MOD_2D* MOD_3D* MOD_TVOUT* MOD_VPORT* MOD_VGA* MOD_EXTMODE* MOD_STRETCH** state - Ether ENABLE or DISABLE.** Return: TRUE - succeed, FALSE - failed. ******************************************************************************/BOOL LgPM_SetHwModuleState (PPDEV ppdev, ULONG hwmod, ULONG state){ LGPM_IN_STRUCT InBuf; LGPM_OUT_STRUCT OutBuf; DWORD cbBytesReturned;
InBuf.arg1 = hwmod; InBuf.arg2 = state; OutBuf.status = FALSE; OutBuf.retval = 0;
if (DEVICE_IO_CTRL(ppdev->hDriver, IOCTL_SET_HW_MODULE_POWER_STATE, (LPVOID)&InBuf, sizeof(InBuf), (LPVOID)&OutBuf, sizeof(OutBuf), &cbBytesReturned, NULL)) return TRUE; else return FALSE;
}; // LgPM_SetHwModuleState
/****************************************************************************
* FUNCTION NAME: LgPM_GetHwModuleState()** DESCRIPTION: This routine returns the current state of a particular* hardware module.* * Input:* hwmod - can be one of the following HW modules* MOD_2D* MOD_3D* MOD_TVOUT* MOD_VPORT* MOD_VGA* MOD_EXTMODE* MOD_STRETCH** state - Pointer to ULONG variable for returning the HW module state* (ENABLE or DISABLE).** Return: TRUE - succeed, FALSE - failed. * ****************************************************************************/BOOL LgPM_GetHwModuleState (PPDEV ppdev, ULONG hwmod, ULONG* state){ LGPM_IN_STRUCT InBuf; LGPM_OUT_STRUCT OutBuf; DWORD cbBytesReturned;
InBuf.arg1 = hwmod; InBuf.arg2 = (ULONG) state; OutBuf.status = FALSE; OutBuf.retval = 0;
if (DEVICE_IO_CTRL(ppdev->hDriver, IOCTL_GET_HW_MODULE_POWER_STATE, (LPVOID)&InBuf, sizeof(InBuf), (LPVOID)&OutBuf, sizeof(OutBuf), &cbBytesReturned, NULL)) return TRUE; else return FALSE;
}; // LgPM_GetHwModuleState
#endif // WINNT_VER35
|
