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|
/*
* Copyright c Realtek Semiconductor Corporation, 2008
* All rights reserved.
*
* Program : GPIO Driver
* Abstract :
* Author :
*/
#ifndef __BOOTCODE__
#include <linux/kernel.h>
#endif
#include "gpio.h"
/*==================== FOR RTL8972B Family ==================*/
#ifdef CONFIG_RTK_VOIP_DRIVERS_PCM8972B_FAMILY
enum GPIO_FUNC
{
GPIO_FUNC_DEDICATE,
GPIO_FUNC_DIRECTION,
GPIO_FUNC_DATA,
GPIO_FUNC_INTERRUPT_STATUS,
GPIO_FUNC_INTERRUPT_ENABLE,
GPIO_FUNC_MAX,
};
//******************************************* GPIO control
static uint32 regGpioControl[] =
{
GPABCDCNR, /* Port A */
GPABCDCNR, /* Port B */
GPABCDCNR, /* Port C */
GPABCDCNR, /* Port D */
GPEFGHCNR, /* Port E */
GPEFGHCNR, /* Port F */
GPEFGHCNR, /* Port G */
GPEFGHCNR, /* Port H */
};
static uint32 bitStartGpioControl[] =
{
0, /* Port A */
8, /* Port B */
16, /* Port C */
24, /* Port D */
0, /* Port E */
8, /* Port F */
16, /* Port G */
24, /* Port H */
};
//******************************************* GPIO Share pin config
#if 0
static uint32 GpioShare_data[] =
{
0xFF1F0FFF,
0x0000007f,
};
#endif
#define SHAREPIN_REGISTER 0xB8000040
#define SET_BIT(x) (1<<x)
static uint32 GpioShare_setting[] =
{
0x00000000, /* Port A0 */
0x00000000, /* Port A1 */
0x00000000, /* Port A2 */
(SET_BIT(21)|SET_BIT(20)), /* Port A3 */
(SET_BIT(21)|SET_BIT(20)), /* Port A4 */
(SET_BIT(21)|SET_BIT(20)), /* Port A5 */
(SET_BIT(21)|SET_BIT(20)), /* Port A6 */
0x00000000, /* Port A7 */
0x00000000, /* Port B0 */
0x00000000, /* Port B1 */
0x00000000, /* Port B2 */
0x00000000, /* Port B3 */
0x00000000, /* Port B4 */
0x00000000, /* Port B5 */
0x00000000, /* Port B6 */
0x00000000, /* Port B7 */
0x00000000, /* Port C0 */
0x00000000, /* Port C1 */
0x00000000, /* Port C2 */
0x00000000, /* Port C3 */
0x00000000, /* Port C4 */
0x00000000, /* Port C5 */
0x00000000, /* Port C6 */
0x00000000, /* Port C7 */
0x00000000, /* Port D0 */
0x00000000, /* Port D1 */
0x00000000, /* Port D2 */
0x00000000, /* Port D3 */
0x00000000, /* Port D4 */
0x00000000, /* Port D5 */
0x00000000, /* Port D6 */
0x00000000, /* Port D7 */
0x00000000, /* Port E0 */
0x00000000, /* Port E1 */
0x00000000, /* Port E2 */
0x00000000, /* Port E3 */
0x00000000, /* Port E4 */
0x00000000, /* Port E5 */
0x00000000, /* Port E6 */
0x00000000, /* Port E7 */
0x00000000, /* Port F0 */
0x00000000, /* Port F1 */
0x00000000, /* Port F2 */
0x00000000, /* Port F3 */
0x00000000, /* Port F4 */
0x00000000, /* Port F5 */
0x00000000, /* Port F6 */
0x00000000, /* Port F7 */
0x00000000, /* Port G0 */
0x00000000, /* Port G1 */
0x00000000, /* Port G2 */
0x00000000, /* Port G3 */
0x00000000, /* Port G4 */
0x00000000, /* Port G5 */
0x00000000, /* Port G6 */
0x00000000, /* Port G7 */
0x00000000, /* Port H0 */
0x00000000, /* Port H1 */
0x00000000, /* Port H2 */
0x00000000, /* Port H3 */
0x00000000, /* Port H4 */
0x00000000, /* Port H5 */
0x00000000, /* Port H6 */
0x00000000, /* Port H7 */
};
#if 0
{
(SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A0 */
(SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A1 */
(SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A2 */
(SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A3 */
(SET_BIT(9)|SET_BIT(8)|SET_BIT(7)), /* Port A4 */
(SET_BIT(6)|SET_BIT(5)), /* Port A5 */
(SET_BIT(6)|SET_BIT(5)), /* Port A6 */
(SET_BIT(3)|SET_BIT(2)), /* Port A7 */
(SET_BIT(11)|SET_BIT(10)), /* Port B0 */
(SET_BIT(13)|SET_BIT(12)), /* Port B1 */
(SET_BIT(15)|SET_BIT(14)), /* Port B2 */
(SET_BIT(17)|SET_BIT(16)), /* Port B3 */
0x00000000, /* Port B4 */
0x00000000, /* Port B5 */
0x00000000, /* Port B6 */
0x00000000, /* Port B7 */
(SET_BIT(19)|SET_BIT(18)), /* Port C0 */
(SET_BIT(21)|SET_BIT(20)), /* Port C1 */
(SET_BIT(23)|SET_BIT(22)), /* Port C2 */
(SET_BIT(25)|SET_BIT(24)), /* Port C3 */
(SET_BIT(27)|SET_BIT(26)), /* Port C4 */
0x00000000, /* Port C5 */
0x00000000, /* Port C6 */
0x00000000, /* Port C7 */
(SET_BIT(1)|SET_BIT(0)), /* Port D0 */
(SET_BIT(1)|SET_BIT(0)), /* Port D1 */
(SET_BIT(1)|SET_BIT(0)), /* Port D2 */
(SET_BIT(1)|SET_BIT(0)), /* Port D3 */
(SET_BIT(1)|SET_BIT(0)), /* Port D4 */
(SET_BIT(1)|SET_BIT(0)), /* Port D5 */
(SET_BIT(1)|SET_BIT(0)), /* Port D6 */
(SET_BIT(1)|SET_BIT(0)), /* Port D7 */
(SET_BIT(1)|SET_BIT(0)), /* Port E0 */
(SET_BIT(1)|SET_BIT(0)), /* Port E1 */
(SET_BIT(1)|SET_BIT(0)), /* Port E2 */
(SET_BIT(1)|SET_BIT(0)), /* Port E3 */
(SET_BIT(1)|SET_BIT(0)), /* Port E4 */
(SET_BIT(1)|SET_BIT(0)), /* Port E5 */
(SET_BIT(1)|SET_BIT(0)), /* Port E6 */
0x00000000, /* Port E7 */
0x00000000, /* Port F0 */
0x00000000, /* Port F1 */
0x00000000, /* Port F2 */
0x00000000, /* Port F3 */
0x00000000, /* Port F4 */
0x00000000, /* Port F5 */
0x00000000, /* Port F6 */
0x00000000, /* Port F7 */
0x00000000, /* Port G0 */
0x00000000, /* Port G1 */
0x00000000, /* Port G2 */
0x00000000, /* Port G3 */
0x00000000, /* Port G4 */
0x00000000, /* Port G5 */
0x00000000, /* Port G6 */
0x00000000, /* Port G7 */
0x00000000, /* Port H0 */
0x00000000, /* Port H1 */
0x00000000, /* Port H2 */
0x00000000, /* Port H3 */
0x00000000, /* Port H4 */
0x00000000, /* Port H5 */
0x00000000, /* Port H6 */
0x00000000, /* Port H7 */
};
#endif
#undef SET_BIT
//******************************************* Direction
static uint32 regGpioDirection[] =
{
GPABCDDIR, /* Port A */
GPABCDDIR, /* Port B */
GPABCDDIR, /* Port C */
GPABCDDIR, /* Port D */
GPEFGHDIR, /* Port E */
GPEFGHDIR, /* Port F */
GPEFGHDIR, /* Port G */
GPEFGHDIR, /* Port H */
};
static uint32 bitStartGpioDirection[] =
{
0, /* Port A */
8, /* Port B */
16, /* Port C */
24, /* Port D */
0, /* Port E */
8, /* Port F */
16, /* Port G */
24, /* Port H */
};
//******************************************* Data
static uint32 regGpioData[] =
{
GPABCDDATA, /* Port A */
GPABCDDATA, /* Port B */
GPABCDDATA, /* Port C */
GPABCDDATA, /* Port D */
GPEFGHDATA, /* Port E */
GPEFGHDATA, /* Port F */
GPEFGHDATA, /* Port G */
GPEFGHDATA, /* Port H */
GPEFGHDATA, /* Port I */
};
static uint32 bitStartGpioData[] =
{
0, /* Port A */
8, /* Port B */
16, /* Port C */
24, /* Port D */
0, /* Port E */
8, /* Port F */
16, /* Port G */
24, /* Port H */
};
//******************************************* ISR
static uint32 regGpioInterruptStatus[] =
{
GPABCDISR, /* Port A */
GPABCDISR, /* Port B */
GPABCDISR, /* Port C */
GPABCDISR, /* Port D */
GPEFGHISR, /* Port E */
GPEFGHISR, /* Port F */
GPEFGHISR, /* Port G */
GPEFGHISR, /* Port H */
};
static uint32 bitStartGpioInterruptStatus[] =
{
0, /* Port A */
8, /* Port B */
16, /* Port C */
24, /* Port D */
0, /* Port E */
8, /* Port F */
16, /* Port G */
24, /* Port H */
};
//******************************************* IMR
static uint32 regGpioInterruptEnable[] =
{
GPABIMR, /* Port A */
GPABIMR, /* Port B */
GPCDIMR, /* Port C */
GPCDIMR, /* Port D */
GPEFIMR, /* Port E */
GPEFIMR, /* Port F */
GPGHIMR, /* Port G */
GPGHIMR, /* Port H */
};
static uint32 bitStartGpioInterruptEnable[] =
{
0, /* Port A */
16, /* Port B */
0, /* Port C */
16, /* Port D */
0, /* Port E */
16, /* Port F */
0, /* Port G */
16, /* Port H */
};
int gpio_debug = 0;
/*
@func int32 | _getGpio | abstract GPIO registers
@parm enum GPIO_FUNC | func | control/data/interrupt register
@parm enum GPIO_PORT | port | GPIO port
@parm uint32 | pin | pin number
@rvalue uint32 | value
@comm
This function is for internal use only. You don't need to care what register address of GPIO is.
This function abstracts these information.
*/
static uint32 _getGpio( enum GPIO_FUNC func, enum GPIO_PORT port, uint32 pin )
{
GPIO_PRINT(4, "[%s():%d] func=%d port=%d pin=%d\n", __FUNCTION__, __LINE__, func, port, pin );
switch( func )
{
case GPIO_FUNC_DEDICATE:
GPIO_PRINT(5, "[%s():%d] regGpioControl[port]=0x%08x bitStartGpioControl[port]=%d\n", __FUNCTION__, __LINE__, regGpioControl[port], bitStartGpioControl[port] );
if ( REG32(regGpioControl[port]) & ( (uint32)1 << (pin+bitStartGpioControl[port]) ) )
return 1;
else
return 0;
break;
case GPIO_FUNC_DIRECTION:
GPIO_PRINT(5, "[%s():%d] regGpioDirection[port]=0x%08x bitStartGpioDirection[port]=%d\n", __FUNCTION__, __LINE__, regGpioDirection[port], bitStartGpioDirection[port] );
if ( REG32(regGpioDirection[port]) & ( (uint32)1 << (pin+bitStartGpioDirection[port]) ) )
return 1;
else
return 0;
break;
case GPIO_FUNC_DATA:
GPIO_PRINT(5, "[%s():%d] regGpioData[port]=0x%08x bitStartGpioData[port]=%d\n", __FUNCTION__, __LINE__, regGpioData[port], bitStartGpioData[port] );
if ( REG32(regGpioData[port]) & ( (uint32)1 << (pin+bitStartGpioData[port]) ) )
return 1;
else
return 0;
break;
case GPIO_FUNC_INTERRUPT_ENABLE:
GPIO_PRINT(5, "[%s():%d] regGpioInterruptEnable[port]=0x%08x bitStartGpioInterruptEnable[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptEnable[port], bitStartGpioInterruptEnable[port] );
return ( REG32(regGpioInterruptEnable[port]) >> (pin*2+bitStartGpioInterruptEnable[port]) ) & (uint32)0x3;
break;
case GPIO_FUNC_INTERRUPT_STATUS:
GPIO_PRINT(5, "[%s():%d] regGpioInterruptStatus[port]=0x%08x bitStartGpioInterruptEnable[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptStatus[port], bitStartGpioInterruptStatus[port] );
if ( REG32(regGpioInterruptStatus[port]) & ( (uint32)1 << (pin+bitStartGpioInterruptStatus[port]) ) )
return 1;
else
return 0;
break;
case GPIO_FUNC_MAX:
printk("Wrong GPIO function\n");
break;
}
return 0xffffffff;
}
/*
@func int32 | _setGpio | abstract GPIO registers
@parm enum GPIO_FUNC | func | control/data/interrupt register
@parm enum GPIO_PORT | port | GPIO port
@parm uint32 | pin | pin number
@parm uint32 | data | value
@rvalue NONE
@comm
This function is for internal use only. You don't need to care what register address of GPIO is.
This function abstracts these information.
*/
static void _setGpio( enum GPIO_FUNC func, enum GPIO_PORT port, uint32 pin, uint32 data )
{
GPIO_PRINT(4, "[%s():%d] func=%d port=%d pin=%d data=%d\n", __FUNCTION__, __LINE__, func, port, pin, data );
switch( func )
{
case GPIO_FUNC_DEDICATE:
GPIO_PRINT(5, "[%s():%d] regGpioControl[port]=0x%08x bitStartGpioControl[port]=%d\n", __FUNCTION__, __LINE__, regGpioControl[port], bitStartGpioControl[port] );
if ( data )
REG32(regGpioControl[port]) |= (uint32)1 << (pin+bitStartGpioControl[port]);
else {
REG32(regGpioControl[port]) &= ~((uint32)1 << (pin+bitStartGpioControl[port]));
//printk("oldsharepin_register=%x", REG32(SHAREPIN_REGISTER));
REG32(SHAREPIN_REGISTER) |= GpioShare_setting[(port<<3)|pin];
//printk("newsharepin_register=%x", REG32(SHAREPIN_REGISTER));
//GPIO_PRINT(5,"GPIOSET(%x)",(port<<3)|pin);
//printk("[%d,%d]GPIOSET(%x)", port, pin,(port<<3)|pin);
}
break;
case GPIO_FUNC_DIRECTION:
GPIO_PRINT(5, "[%s():%d] regGpioDirection[port]=0x%08x bitStartGpioDirection[port]=%d\n", __FUNCTION__, __LINE__, regGpioDirection[port], bitStartGpioDirection[port] );
if ( data )
REG32(regGpioDirection[port]) |= (uint32)1 << (pin+bitStartGpioDirection[port]);
else
REG32(regGpioDirection[port]) &= ~((uint32)1 << (pin+bitStartGpioDirection[port]));
break;
case GPIO_FUNC_DATA:
GPIO_PRINT(5, "[%s():%d] regGpioData[port]=0x%08x bitStartGpioData[port]=%d\n", __FUNCTION__, __LINE__, regGpioData[port], bitStartGpioData[port] );
if ( data )
REG32(regGpioData[port]) |= (uint32)1 << (pin+bitStartGpioData[port]);
else
REG32(regGpioData[port]) &= ~((uint32)1 << (pin+bitStartGpioData[port]));
break;
case GPIO_FUNC_INTERRUPT_ENABLE:
GPIO_PRINT(5, "[%s():%d] regGpioInterruptEnable[port]=0x%08x bitStartGpioInterruptEnable[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptEnable[port], bitStartGpioInterruptEnable[port] );
REG32(regGpioInterruptEnable[port]) &= ~((uint32)0x3 << (pin*2+bitStartGpioInterruptEnable[port]));
REG32(regGpioInterruptEnable[port]) |= (uint32)data << (pin*2+bitStartGpioInterruptEnable[port]);
break;
case GPIO_FUNC_INTERRUPT_STATUS:
GPIO_PRINT(5, "[%s():%d] regGpioInterruptStatus[port]=0x%08x bitStartGpioInterruptStatus[port]=%d\n", __FUNCTION__, __LINE__, regGpioInterruptStatus[port], bitStartGpioInterruptStatus[port] );
if ( data )
REG32(regGpioInterruptStatus[port]) |= (uint32)1 << (pin+bitStartGpioInterruptStatus[port]);
else
REG32(regGpioInterruptStatus[port]) &= ~((uint32)1 << (pin+bitStartGpioInterruptStatus[port]));
break;
case GPIO_FUNC_MAX:
printk("Wrong GPIO function\n");
break;
}
}
/*
@func int32 | _rtl8972B_initGpioPin | Initiate a specifed GPIO port.
@parm uint32 | gpioId | The GPIO port that will be configured
@parm enum GPIO_PERIPHERAL | dedicate | Dedicated peripheral type
@parm enum GPIO_DIRECTION | direction | Data direction, in or out
@parm enum GPIO_INTERRUPT_TYPE | interruptEnable | Interrupt mode
@rvalue SUCCESS | success.
@rvalue FAILED | failed. Parameter error.
@comm
This function is used to initialize GPIO port.
*/
int32 _rtl8972B_initGpioPin( uint32 gpioId, enum GPIO_CONTROL dedicate,
enum GPIO_DIRECTION direction,
enum GPIO_INTERRUPT_TYPE interruptEnable )
{
uint32 port = GPIO_PORT( gpioId );
uint32 pin = GPIO_PIN( gpioId );
if ( port >= GPIO_PORT_MAX ) return FAILED;
if ( pin >= 8 ) return FAILED;
switch ( dedicate )
{
case GPIO_CONT_GPIO:
_setGpio( GPIO_FUNC_DEDICATE, port, pin, 0 );
break;
case GPIO_CONT_PERI:
_setGpio( GPIO_FUNC_DEDICATE, port, pin, 1 );
break;
}
_setGpio( GPIO_FUNC_DIRECTION, port, pin, direction );
_setGpio( GPIO_FUNC_INTERRUPT_ENABLE, port, pin, interruptEnable );
return SUCCESS;
}
/*
@func int32 | _rtl8972B_getGpioDataBit | Get the bit value of a specified GPIO ID.
@parm uint32 | gpioId | GPIO ID
@parm uint32* | data | Pointer to store return value
@rvalue SUCCESS | success.
@rvalue FAILED | failed. Parameter error.
@comm
*/
int32 _rtl8972B_getGpioDataBit( uint32 gpioId, uint32* pData )
{
uint32 port = GPIO_PORT( gpioId );
uint32 pin = GPIO_PIN( gpioId );
if ( port >= GPIO_PORT_MAX ) return FAILED;
if ( pin >= 8 ) return FAILED;
if ( pData == NULL ) return FAILED;
*pData = _getGpio( GPIO_FUNC_DATA, port, pin );
GPIO_PRINT(3, "[%s():%d] (port=%d,pin=%d)=%d\n", __FUNCTION__, __LINE__, port, pin, *pData );
return SUCCESS;
}
/*
@func int32 | _rtl8972B_setGpioDataBit | Set the bit value of a specified GPIO ID.
@parm uint32 | gpioId | GPIO ID
@parm uint32 | data | Data to write
@rvalue SUCCESS | success.
@rvalue FAILED | failed. Parameter error.
@comm
*/
int32 _rtl8972B_setGpioDataBit( uint32 gpioId, uint32 data )
{
uint32 port = GPIO_PORT( gpioId );
uint32 pin = GPIO_PIN( gpioId );
if ( port >= GPIO_PORT_MAX ) return FAILED;
if ( pin >= 8 ) return FAILED;
GPIO_PRINT(3, "[%s():%d] (port=%d,pin=%d)=%d\n", __FUNCTION__, __LINE__, port, pin, data );
_setGpio( GPIO_FUNC_DATA, port, pin, data );
return SUCCESS;
}
#endif //CONFIG_RTK_VOIP_DRIVERS_PCM8972B_FAMILY
|
