diff options
Diffstat (limited to 'target/linux/realtek/files/drivers/serial/i2c_alc5628.c')
| -rw-r--r-- | target/linux/realtek/files/drivers/serial/i2c_alc5628.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/target/linux/realtek/files/drivers/serial/i2c_alc5628.c b/target/linux/realtek/files/drivers/serial/i2c_alc5628.c new file mode 100644 index 000000000..6568ff791 --- /dev/null +++ b/target/linux/realtek/files/drivers/serial/i2c_alc5628.c @@ -0,0 +1,344 @@ +#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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