upll_ctrl.c

8032底层驱动部分。因为可以移植 所以单独来拿出来

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/*****************************************************************************
 *
 * Filename:
 * ---------
 *    upll_ctrl.c
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *  This file implements upll control functions
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
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 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/
 
#include "drv_comm.h"
#include "reg_base.h"
#include "upll_ctrl.h"
#include "usb_drv.h"

#if defined(MT6218) || defined(MT6218B) || defined(MT6219) || defined(MT6217) || defined(MT6226) || defined(MT6226M) || defined(MT6227) || defined(MT6228) || defined(MT6229) || defined(MT6230)

/* Record all upll enable owners */
kal_uint32 g_upll_owner = 0;


/*
* FUNCTION                                                            
*	UPLL_Enable
*
* DESCRIPTION                                                           
*   	This function is to enable UPLL
*
* CALLS  
*	It is called to enable UPLL
*
* PARAMETERS
*	owner = UPLL owner
*	
* RETURNS
*	None
*
* GLOBALS AFFECTED
*   external_global
*/
void UPLL_Enable(UPLL_OWNER owner)
{
   kal_uint32 savedMask;
   	
   if(owner >= UPLL_OWNER_MAX)
      EXT_ASSERT(0, (kal_uint32)owner, g_upll_owner, 0);
          
   savedMask = SaveAndSetIRQMask();   
   if(g_upll_owner == 0)
   {
#if defined(MT6228) 
      /* hardware issue */
      USB_PDNDisable(USB_PDN_OWNER_UPLL);
#endif   	
      DRV_Reg(DRVPDN_CON0) &= (~DRVPDN_CON0_UPLL);	
   }
   g_upll_owner |= (1<<owner);    
   RestoreIRQMask(savedMask);
}

/*
* FUNCTION                                                            
*	UPLL_Disable
*
* DESCRIPTION                                                           
*   	This function is to disable UPLL
*
* CALLS  
*	It is called to disable UPLL
*
* PARAMETERS
*	owner = UPLL owner
*	
* RETURNS
*	None
*
* GLOBALS AFFECTED
*   external_global
*/
void UPLL_Disable(UPLL_OWNER owner)
{
   kal_uint32 savedMask;
   
   if(owner >= UPLL_OWNER_MAX)
      EXT_ASSERT(0, (kal_uint32)owner, g_upll_owner, 0);

   savedMask = SaveAndSetIRQMask();   
   g_upll_owner &= (~(1<<owner));          
   if(g_upll_owner == 0)
   {
#if defined(MT6228) 
      /* hardware issue */
      USB_PDNEnable(USB_PDN_OWNER_UPLL);
#endif   	
      DRV_Reg(DRVPDN_CON0) |= (DRVPDN_CON0_UPLL);	      	
   }
   RestoreIRQMask(savedMask);
}

#endif