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#ifndef __BOOTCODE__
#include <linux/module.h>
#include <linux/init.h>
#include <linux/version.h>
#include <platform.h> // GPIO_ABCD_IRQ, PABCD_ISR
#include <asm/delay.h>
#endif
#ifdef __BOOTCODE__
#define ENODEV 19 /* No such device */
#define __init
#endif
#if defined( LINUX_VERSION_CODE ) && (LINUX_VERSION_CODE == KERNEL_VERSION(2,6,30))
#define LINUX_KERNEL_VERSION_2_6_30 1
#endif
#ifdef LINUX_KERNEL_VERSION_2_6_30
#include "bspchip.h" // BSP_GPIO_EFGH_IRQ
#endif
// ------------------------------------------------------------------
// ------------------------------------------------------------------
// Basic setup information
// ------------------------------------------------------------------
// ------------------------------------------------------------------
// I2C level function
#ifndef __BOOTCODE__
#include "i2c.h"
#else
#include "i2c.h"
#endif
#define I2C_GPIO_ID( port, pin ) ( ( ( port - 'A' ) << 16 ) | ( pin ) )
#ifdef CONFIG_SND_RTL8197D_SOC_ALC5628
#define ALC5628_SCL I2C_GPIO_ID( 'G', 4 ) // SCL = G4
#define ALC5628_SDA I2C_GPIO_ID( 'G', 6 ) // SDA = G6
#endif
#define ALC5628_I2C_ADDR 0x30
#define ALC5628_I2C_WRITE 0x00
#define ALC5628_I2C_READ 0x01
static i2c_dev_t alc5628_i2c_dev = {
.sclk = ALC5628_SCL,
.sdio = ALC5628_SDA,
};
// Register address byte
// 7 : not used
// 6~3: A[3:0] UART's internal register select
// 2~1: channel select: CH1 = 0?!, CH0 = 0
// 0 : not used
#define MK_SC16IS7X0_REG_ADDR( uart_reg ) ( ( uart_reg & 0x0F ) << 3 )
unsigned int serial_in_i2c(unsigned int addr, int offset)
{
unsigned short int data_hibyte=0;
unsigned short int data_lowbyte=0;
unsigned short int data;
//printk( "serial_in_i2c(%X):%X\n", addr, offset );
if( addr != ALC5628_I2C_ADDR )
return 0;
// start
i2c_start_condition( &alc5628_i2c_dev );
// addr + write
i2c_serial_write_byte( &alc5628_i2c_dev, ALC5628_I2C_ADDR |
ALC5628_I2C_WRITE );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
// write register address
i2c_serial_write_byte( &alc5628_i2c_dev, offset );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
// start
i2c_start_condition( &alc5628_i2c_dev );
// addr + read
i2c_serial_write_byte( &alc5628_i2c_dev, ALC5628_I2C_ADDR |
ALC5628_I2C_READ );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
// read data_hibyte
i2c_serial_read( &alc5628_i2c_dev, &data_hibyte );
//write ACK
i2c_ACK_w(&alc5628_i2c_dev, 0);
// read data_lowbyte
i2c_serial_read( &alc5628_i2c_dev, &data_lowbyte );
data = (data_hibyte<<8) | data_lowbyte;
// write negative-ACK
i2c_ACK_w( &alc5628_i2c_dev, 1 );
// stop
i2c_stop_condition( &alc5628_i2c_dev );
//printk( "in[%X]\n", data );
return data;
}
EXPORT_SYMBOL_GPL(serial_in_i2c);
unsigned int serial_out_i2c(unsigned int addr, int offset, int value)
{
//printk( "serial_out_i2c(%X):%X,%X\n", addr, offset, value );
unsigned short int data_hibyte;
unsigned short int data_lowbyte;
data_hibyte =(unsigned char) (value>>8);
data_lowbyte =(unsigned char) (value & 0xff);
if( addr != ALC5628_I2C_ADDR )
return 0;
//printk("(%d)", __LINE__);
// start
i2c_start_condition( &alc5628_i2c_dev );
// addr + write
i2c_serial_write_byte( &alc5628_i2c_dev, ALC5628_I2C_ADDR | ALC5628_I2C_WRITE );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// write register address
i2c_serial_write_byte( &alc5628_i2c_dev, offset );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// write data hibyte
i2c_serial_write_byte( &alc5628_i2c_dev, data_hibyte );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// write data lowbyte
i2c_serial_write_byte( &alc5628_i2c_dev, data_lowbyte );
// read ACK
if( i2c_ACK( &alc5628_i2c_dev ) != 0 )
return 0;
//printk("(%d)", __LINE__);
// stop
i2c_stop_condition( &alc5628_i2c_dev );
return 0;
}
EXPORT_SYMBOL_GPL(serial_out_i2c);
static void __init alc5628_init_i2c( void )
{
int temp;
// init SCL / SDA
i2c_init_SCL_SDA( &alc5628_i2c_dev );
serial_in_i2c( ALC5628_I2C_ADDR, 0 ); // avoid NO ACK at first time access
serial_out_i2c( ALC5628_I2C_ADDR, 0x0, 0x707 );
serial_out_i2c( ALC5628_I2C_ADDR, 0x0, 0x707 );
serial_in_i2c( ALC5628_I2C_ADDR, 0 );
serial_in_i2c( ALC5628_I2C_ADDR, 0 );
// enable playback
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3E );
serial_out_i2c( ALC5628_I2C_ADDR, 0x3E, (temp) | 0x8000 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3C );
serial_out_i2c( ALC5628_I2C_ADDR, 0x3C, (temp) | 0x2000 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3C );
serial_out_i2c( ALC5628_I2C_ADDR, 0x3C, (temp) | 0x7F0 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3A );
serial_out_i2c( ALC5628_I2C_ADDR, 0x3A, (temp) | 0x8030 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3E );
serial_out_i2c( ALC5628_I2C_ADDR, 0x3E, (temp) | 0x600 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x0C );
serial_out_i2c( ALC5628_I2C_ADDR, 0x0C, (temp&(~0xBFBF)) | 0x1010 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x1C );
serial_out_i2c( ALC5628_I2C_ADDR, 0x1C, (temp) | 0x300 );
// temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x0C );
// serial_out_i2c( ALC5628_I2C_ADDR, 0x0C, (temp&(~0xBFBF)) | 0x1010 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0 );
//printk("reg0=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x2 );
//printk("reg2=%x\n", temp);
serial_out_i2c( ALC5628_I2C_ADDR, 0x2, 0x0 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x2 );
//printk("reg2=%x\n", temp);
serial_out_i2c( ALC5628_I2C_ADDR, 0x2, 0xFFFF );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x2 );
//printk("reg2=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x4 );
//printk("reg4=%x\n", temp);
serial_out_i2c( ALC5628_I2C_ADDR, 0x4, 0x0 );
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x4 );
//printk("reg4=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0xA );
//printk("regA=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0xC );
//printk("regC=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x16 );
//printk("reg16=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x1C );
//printk("reg1C=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x34 );
//printk("reg34=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x38 );
//printk("reg38=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3A );
//printk("reg3A=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3C );
//printk("reg3C=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x3E );
//printk("reg3E=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x40 );
//printk("reg40=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x42 );
//printk("reg42=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x44 );
//printk("reg44=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x5A );
//printk("reg5A=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x5C );
//printk("reg5C=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x5E );
//printk("reg5E=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x68 );
//printk("reg68=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x6A );
//printk("reg6A=%x\n", temp);
temp = serial_in_i2c( ALC5628_I2C_ADDR, 0x6C );
//printk("reg6C=%x\n", temp);
}
// ------------------------------------------------------------------
// ------------------------------------------------------------------
// Early printk or bootcode
#define rtlRegRead(addr) \
(*(volatile u32 *)addr)
#define rtlRegWrite(addr, val) \
((*(volatile u32 *)addr) = (val))
static inline u32 rtlRegMask(u32 addr, u32 mask, u32 value)
{
u32 reg;
reg = rtlRegRead(addr);
reg &= ~mask;
reg |= value & mask;
rtlRegWrite(addr, reg);
reg = rtlRegRead(addr); /* flush write to the hardware */
return reg;
}
static int __init alc5628_init(void)
{
int ret;
rtlRegMask(0xb8000010, 0x03DCB000, 0x01DCB000);//enable iis controller clock
rtlRegMask(0xb8000058, 0x00000001, 0x00000001);//enable 24p576mHz clock
/* Configure the I2S pins in correct mode */
#if 1 // set the jtag as iis-audio
rtlRegMask(0xb8000040, 0x00000007, 0x00000003);//change pin mux to iis-voice pin
#else // set the led-phase or lec-sig as iis-audio
rtlRegMask(0xb8000044, 0x001F80DB, 0x00000049);//change pin mux to iis-voice pin
#endif
alc5628_init_i2c();
return 0;
}
#ifndef __BOOTCODE__
module_init(alc5628_init);
MODULE_AUTHOR("Realtek");
MODULE_DESCRIPTION("i2c driver for ALC5628");
MODULE_LICENSE("GPL");
#endif
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