📄 gpt.c
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/*****************************************************************************
* Copyright Statement:
* --------------------
* This software is protected by Copyright and the information contained
* herein is confidential. The software may not be copied and the information
* contained herein may not be used or disclosed except with the written
* permission of MediaTek Inc. (C) 2005
*
* BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
* NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
* SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
* BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
* LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*
* THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
* WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
* LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
* RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
* THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/
/*****************************************************************************
*
* Filename:
* ---------
* gpt.c
*
* Project:
* --------
* Maui_Software
*
* Description:
* ------------
* This Module defines the GPT driver.
*
* Author:
* -------
* -------
*
*============================================================================
* HISTORY
* Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*------------------------------------------------------------------------------
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*------------------------------------------------------------------------------
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*============================================================================
****************************************************************************/
#include "drv_comm.h"
#include "reg_base.h"
#include "gpt_hw.h"
#include "gpt_sw.h"
#include "intrCtrl.h"
#include "gpio_sw.h"
#include "drvpdn.h"
#include "drv_hisr.h"
static GPTStruct GPTTimer;
//extern void dbg_print(char *fmt,...);
/*
* FUNCTION
* GPT_clock
*
* DESCRIPTION
* This function is to setup GPT clock
*
* CALLS
* It is called to setup GPT clock
*
* PARAMETERS
* timerNum = 1(GPT1) or 2(GPT2)
* clock = clk_16k,
* clk_8k,
* clk_4k,
* clk_2k,
* clk_1k,
* clk_500,
* clk_250,
* clk_125
*
* RETURNS
* None
*
* GLOBALS AFFECTED
* external_global
*/
void GPT_clock(kal_uint8 timerNum ,gpt_clock clock)
{
kal_uint16 *ptr_addr=0;
if ( timerNum == 1)
{
ptr_addr = (kal_uint16 *)GPT1_PRESCALER;
}
if ( timerNum == 2)
{
ptr_addr = (kal_uint16 *)GPT2_PRESCALER;
}
switch(clock)
{
case clk_16k:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div2);
break;
case clk_8k:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div4);
break;
case clk_4k:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div8);
break;
case clk_2k:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div16);
break;
case clk_1k:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div32);
break;
case clk_500:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div64);
break;
case clk_250:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div128);
break;
case clk_125:
DRV_WriteReg(ptr_addr,GPT_PRESCALER_div256);
break;
default:
break;
}
}
/*
* FUNCTION
* GPT_ResetTimer
*
* DESCRIPTION
* This function is to setup GPT parameters
*
* CALLS
* It is called to setup GPT parameters
*
* PARAMETERS
* timerNum = 1(GPT1) or 2(GPT2)
* countValue = GPT count
* autoReload = KAL_TRUE,autoReload mode
* KAL_FALSE, Single shot mode
*
* RETURNS
* None
*
* GLOBALS AFFECTED
* external_global
*/
void GPT_ResetTimer(kal_uint8 timerNum,kal_uint16 countValue,kal_bool autoReload)
{
if (timerNum == 1)
{
DRV_WriteReg(GPT1_LEN,countValue);
if (autoReload == KAL_TRUE)
{
DRV_Reg(GPT1_CTRL) |= GPT_CTRL_AUTOMODE;
}
else
{
DRV_Reg(GPT1_CTRL) &= ~GPT_CTRL_AUTOMODE;
}
}
if (timerNum == 2)
{
DRV_WriteReg(GPT2_LEN,countValue);
if (autoReload == KAL_TRUE)
{
DRV_Reg(GPT2_CTRL) |= GPT_CTRL_AUTOMODE;
}
else
{
DRV_Reg(GPT2_CTRL) &= ~GPT_CTRL_AUTOMODE;
}
}
}
/*
* FUNCTION
* GPT_Stop
*
* DESCRIPTION
* Stop GPT timer
*
* CALLS
* It is called to stop GPT timer
*
* PARAMETERS
* timerNum = 1(GPT1) or 2(GPT2)
*
* RETURNS
* None
*
* GLOBALS AFFECTED
* external_global
*/
void GPT_Stop(kal_uint8 timerNum)
{
kal_uint16 gpt_ctrl1;
kal_uint16 gpt_ctrl2;
#if ( defined(MT6218B) || defined(MT6219)|| defined(MT6217)|| defined(MT6228)|| defined(MT6229) || defined(MT6230)|| (defined(MT6226))|| (defined(MT6227))||defined(MT6226M) )
kal_uint16 gpt_ctrl3;
#endif
gpt_ctrl1 = DRV_Reg(GPT1_CTRL);
gpt_ctrl2 = DRV_Reg(GPT2_CTRL);
#if ( defined(MT6218B) || defined(MT6219) || defined(MT6217)|| defined(MT6228)|| defined(MT6229) || defined(MT6230)|| (defined(MT6226))|| (defined(MT6227))||defined(MT6226M) )
gpt_ctrl3 = DRV_Reg(GPT3_CTRL);
#endif
if (timerNum == 1)
{
gpt_ctrl1 &= ~GPT_CTRL_Enable;
DRV_WriteReg(GPT1_CTRL,gpt_ctrl1);
}
if (timerNum == 2)
{
gpt_ctrl2 &= ~GPT_CTRL_Enable;
DRV_WriteReg(GPT2_CTRL,gpt_ctrl2);
}
#if ( defined(MT6218B) || defined(MT6219) || defined(MT6217)|| defined(MT6228)|| defined(MT6229) || defined(MT6230)|| (defined(MT6226))|| (defined(MT6227))||defined(MT6226M) )
if (timerNum == 3)
{
gpt_ctrl3 =(kal_uint16) ~GPT3_ENABLE;
DRV_WriteReg(GPT3_CTRL,gpt_ctrl3);
}
if ( (((gpt_ctrl1|gpt_ctrl2)&GPT_CTRL_Enable)==0)&&(gpt_ctrl3!=0x4000))
#else
if ( ((gpt_ctrl1|gpt_ctrl2)&GPT_CTRL_Enable)==0 )
#endif
{
kal_uint16 GPT_Status;
GPT_Status = DRV_Reg(GPT_STS);
IRQClearInt(IRQ_GPT_CODE);
IRQMask(IRQ_GPT_CODE);
DRVPDN_Enable(DRVPDN_CON1,DRVPDN_CON1_GPT,PDN_GPT);
}
}
/*
* FUNCTION
* GPT_Start
*
* DESCRIPTION
* Start GPT timer
*
* CALLS
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