/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
* File Name          : stm32f10x_sdio.c
* Author             : MCD Application Team
* Version            : V2.0
* Date               : 05/23/2008
* Description        : This file provides all the SDIO firmware functions.
********************************************************************************
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
* FOR MORE INFORMATION PLEASE CAREFULLY READ THE LICENSE AGREEMENT FILE LOCATED 
* IN THE ROOT DIRECTORY OF THIS FIRMWARE PACKAGE.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_sdio.h"
#include "stm32f10x_rcc.h"

/* Private typedef -----------------------------------------------------------*/
/* ------------ SDIO registers bit address in the alias region ----------- */
#define SDIO_OFFSET                (SDIO_BASE - PERIPH_BASE)

/* --- CLKCR Register ---*/
/* Alias word address of CLKEN bit */
#define CLKCR_OFFSET              (SDIO_OFFSET + 0x04)
#define CLKEN_BitNumber           0x08
#define CLKCR_CLKEN_BB            (PERIPH_BB_BASE + (CLKCR_OFFSET * 32) + (CLKEN_BitNumber * 4))

/* --- CMD Register ---*/
/* Alias word address of SDIOSUSPEND bit */
#define CMD_OFFSET                (SDIO_OFFSET + 0x0C)
#define SDIOSUSPEND_BitNumber     0x0B
#define CMD_SDIOSUSPEND_BB        (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (SDIOSUSPEND_BitNumber * 4))

/* Alias word address of ENCMDCOMPL bit */
#define ENCMDCOMPL_BitNumber      0x0C
#define CMD_ENCMDCOMPL_BB         (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (ENCMDCOMPL_BitNumber * 4))

/* Alias word address of NIEN bit */
#define NIEN_BitNumber            0x0D
#define CMD_NIEN_BB               (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (NIEN_BitNumber * 4))

/* Alias word address of ATACMD bit */
#define ATACMD_BitNumber          0x0E
#define CMD_ATACMD_BB             (PERIPH_BB_BASE + (CMD_OFFSET * 32) + (ATACMD_BitNumber * 4))

/* --- DCTRL Register ---*/
/* Alias word address of DMAEN bit */
#define DCTRL_OFFSET              (SDIO_OFFSET + 0x2C)
#define DMAEN_BitNumber           0x03
#define DCTRL_DMAEN_BB            (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (DMAEN_BitNumber * 4))

/* Alias word address of RWSTART bit */
#define RWSTART_BitNumber         0x08
#define DCTRL_RWSTART_BB          (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (RWSTART_BitNumber * 4))

/* Alias word address of RWSTOP bit */
#define RWSTOP_BitNumber          0x09
#define DCTRL_RWSTOP_BB           (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (RWSTOP_BitNumber * 4))

/* Alias word address of RWMOD bit */
#define RWMOD_BitNumber           0x0A
#define DCTRL_RWMOD_BB            (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (RWMOD_BitNumber * 4))

/* Alias word address of SDIOEN bit */
#define SDIOEN_BitNumber          0x0B
#define DCTRL_SDIOEN_BB           (PERIPH_BB_BASE + (DCTRL_OFFSET * 32) + (SDIOEN_BitNumber * 4))


/* ---------------------- SDIO registers bit mask ------------------------ */
/* --- CLKCR Register ---*/
/* CLKCR register clear mask */
#define CLKCR_CLEAR_MASK         ((u32)0xFFFF8100) 

/* --- PWRCTRL Register ---*/
/* SDIO PWRCTRL Mask */
#define PWR_PWRCTRL_MASK         ((u32)0xFFFFFFFC)

/* --- DCTRL Register ---*/
/* SDIO DCTRL Clear Mask */
#define DCTRL_CLEAR_MASK         ((u32)0xFFFFFF08)

/* --- CMD Register ---*/
/* CMD Register clear mask */
#define CMD_CLEAR_MASK           ((u32)0xFFFFF800)

/* SDIO RESP Registers Address */
#define SDIO_RESP_ADDR           ((u32)(SDIO_BASE + 0x14))

/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : SDIO_DeInit
* Description    : Deinitializes the SDIO peripheral registers to their default
*                  reset values.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void SDIO_DeInit(void)
{
  SDIO->POWER = 0x00000000;
  SDIO->CLKCR = 0x00000000;
  SDIO->ARG = 0x00000000;
  SDIO->CMD = 0x00000000;
  SDIO->DTIMER = 0x00000000;
  SDIO->DLEN = 0x00000000;
  SDIO->DCTRL = 0x00000000;
  SDIO->ICR = 0x00C007FF;
  SDIO->MASK = 0x00000000;
}

/*******************************************************************************
* Function Name  : SDIO_Init
* Description    : Initializes the SDIO peripheral according to the specified 
*                  parameters in the SDIO_InitStruct.
* Input          : SDIO_InitStruct : pointer to a SDIO_InitTypeDef structure 
*                  that contains the configuration information for the SDIO 
*                  peripheral.
* Output         : None
* Return         : None
*******************************************************************************/
void SDIO_Init(SDIO_InitTypeDef* SDIO_InitStruct)
{
  u32 tmpreg = 0;
    
  /* Check the parameters */
  assert_param(IS_SDIO_CLOCK_EDGE(SDIO_InitStruct->SDIO_ClockEdge));
  assert_param(IS_SDIO_CLOCK_BYPASS(SDIO_InitStruct->SDIO_ClockBypass));
  assert_param(IS_SDIO_CLOCK_POWER_SAVE(SDIO_InitStruct->SDIO_ClockPowerSave));
  assert_param(IS_SDIO_BUS_WIDE(SDIO_InitStruct->SDIO_BusWide));
  assert_param(IS_SDIO_HARDWARE_FLOW_CONTROL(SDIO_InitStruct->SDIO_HardwareFlowControl)); 
   
/*---------------------------- SDIO CLKCR Configuration ------------------------*/  
  /* Get the SDIO CLKCR value */
  tmpreg = SDIO->CLKCR;
  
  /* Clear CLKDIV, PWRSAV, BYPASS, WIDBUS, NEGEDGE, HWFC_EN bits */
  tmpreg &= CLKCR_CLEAR_MASK;
  
  /* Set CLKDIV bits according to SDIO_ClockDiv value */
  /* Set PWRSAV bit according to SDIO_ClockPowerSave value */
  /* Set BYPASS bit according to SDIO_ClockBypass value */
  /* Set WIDBUS bits according to SDIO_BusWide value */
  /* Set NEGEDGE bits according to SDIO_ClockEdge value */
  /* Set HWFC_EN bits according to SDIO_HardwareFlowControl value */
  tmpreg |= (SDIO_InitStruct->SDIO_ClockDiv  | SDIO_InitStruct->SDIO_ClockPowerSave |
             SDIO_InitStruct->SDIO_ClockBypass | SDIO_InitStruct->SDIO_BusWide |
             SDIO_InitStruct->SDIO_ClockEdge | SDIO_InitStruct->SDIO_HardwareFlowControl); 
  
  /* Write to SDIO CLKCR */
  SDIO->CLKCR = tmpreg;             
}

/*******************************************************************************
* Function Name  : SDIO_StructInit
* Description    : Fills each SDIO_InitStruct member with its default value.
* Input          : SDIO_InitStruct: pointer to an SDIO_InitTypeDef structure which 
*                  will be initialized.
* Output         : None
* Return         : None
*******************************************************************************/
void SDIO_StructInit(SDIO_InitTypeDef* SDIO_InitStruct)
{
  /* SDIO_InitStruct members default value */
  SDIO_InitStruct->SDIO_ClockDiv = 0x00;
  SDIO_InitStruct->SDIO_ClockEdge = SDIO_ClockEdge_Rising;
  SDIO_InitStruct->SDIO_ClockBypass = SDIO_ClockBypass_Disable;
  SDIO_InitStruct->SDIO_ClockPowerSave = SDIO_ClockPowerSave_Disable;
  SDIO_InitStruct->SDIO_BusWide = SDIO_BusWide_1b;
  SDIO_InitStruct->SDIO_HardwareFlowControl = SDIO_HardwareFlowControl_Disable;
}

/*******************************************************************************
* Function Name  : SDIO_ClockCmd
* Description    : Enables or disables the SDIO Clock.
* Input          : NewState: new state of the SDIO Clock.
*                  This parameter can be: ENABLE or DISABLE.
* Output         : None
* Return         : None
*******************************************************************************/
void SDIO_ClockCmd(FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  *(vu32 *) CLKCR_CLKEN_BB = (u32)NewState;
}

/*******************************************************************************
* Function Name  : SDIO_SetPowerState
* Description    : Sets the power status of the controller.
* Input          : SDIO_PowerState: new state of the Power state. 
*                  This parameter can be one of the following values:
*                   - SDIO_PowerState_OFF
*                   - SDIO_PowerState_ON
* Output         : None
* Return         : None
*******************************************************************************/
void SDIO_SetPowerState(u32 SDIO_PowerState)
{
  /* Check the parameters */
  assert_param(IS_SDIO_POWER_STATE(SDIO_PowerState));
  
  SDIO->POWER &= PWR_PWRCTRL_MASK;
  SDIO->POWER |= SDIO_PowerState;
}

/*******************************************************************************
* Function Name  : SDIO_GetPowerState
* Description    : Gets the power status of the controller.
* Input          : None
* Output         : None
* Return         : Power status of the controller. The returned value can
*                  be one of the following:
*                       - 0x00: Power OFF
*                       - 0x02: Power UP
*                       - 0x03: Power ON 
*******************************************************************************/
u32 SDIO_GetPowerState(void)
{
  return (SDIO->POWER & (~PWR_PWRCTRL_MASK));
}

/*******************************************************************************
* Function Name  : SDIO_ITConfig
* Description    : Enables or disables the SDIO interrupts.
* Input          : - SDIO_IT: specifies the SDIO interrupt sources to be 
*                    enabled or disabled.
*                    This parameter can be one or a combination of the following
*                    values:
*                      - SDIO_IT_CCRCFAIL: Command response received (CRC check
*                                          failed) interrupt    
*                      - SDIO_IT_DCRCFAIL: Data block sent/received (CRC check 
*                                          failed) interrupt    
*                      - SDIO_IT_CTIMEOUT: Command response timeout interrupt    
*                      - SDIO_IT_DTIMEOUT: Data timeout interrupt    
*                      - SDIO_IT_TXUNDERR: Transmit FIFO underrun error interrupt    
*                      - SDIO_IT_RXOVERR:  Received FIFO overrun error interrupt     
*                      - SDIO_IT_CMDREND:  Command response received (CRC check 
*                                          passed) interrupt     
*                      - SDIO_IT_CMDSENT:  Command sent (no response required) 
*                                          interrupt     
*                      - SDIO_IT_DATAEND:  Data end (data counter, SDIDCOUNT, is 
*                                          zero) interrupt     
*                      - SDIO_IT_STBITERR: Start bit not detected on all data 
*                                          signals in wide bus mode interrupt    
*                      - SDIO_IT_DBCKEND:  Data block sent/received (CRC check 
*                                          passed) interrupt    
*                      - SDIO_IT_CMDACT:   Command transfer in progress interrupt     
*                      - SDIO_IT_TXACT:    Data transmit in progress interrupt       
*                      - SDIO_IT_RXACT:    Data receive in progress interrupt      
*                      - SDIO_IT_TXFIFOHE: Transmit FIFO Half Empty interrupt    
*                      - SDIO_IT_RXFIFOHF: Receive FIFO Half Full interrupt   
*                      - SDIO_IT_TXFIFOF:  Transmit FIFO full interrupt     
*                      - SDIO_IT_RXFIFOF:  Receive FIFO full interrupt     
*                      - SDIO_IT_TXFIFOE:  Transmit FIFO empty interrupt      
*                      - SDIO_IT_RXFIFOE:  Receive FIFO empty interrupt     
*                      - SDIO_IT_TXDAVL:   Data available in transmit FIFO interrupt      
*                      - SDIO_IT_RXDAVL:   Data available in receive FIFO interrupt      
*                      - SDIO_IT_SDIOIT:   SD I/O interrupt received interrupt      
*                      - SDIO_IT_CEATAEND: CE-ATA command completion signal 
*                                          received for CMD61 interrupt
*                  - NewState: new state of the specified SDIO interrupts.
*                  This parameter can be: ENABLE or DISABLE.  
* Output         : None
* Return         : None 
*******************************************************************************/
void SDIO_ITConfig(u32 SDIO_IT, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_SDIO_IT(SDIO_IT));