Add realtek target files

Signed-off-by: Roman Yeryomin <roman@advem.lv>

1 files changed, 305 insertions, 0 deletions

diff --git a/target/linux/realtek/files/drivers/serial/i2c.c b/target/linux/realtek/files/drivers/serial/i2c.c
new file mode 100644
index 000000000..42fdebd03
--- /dev/null
+++ b/target/linux/realtek/files/drivers/serial/i2c.c
@@ -0,0 +1,305 @@
+#ifdef __UBOOT__

+#include <config.h>

+#endif

+#ifndef __BOOTCODE__

+#include <linux/config.h>

+#include <linux/kernel.h>

+#include <linux/interrupt.h>

+#include <linux/list.h>

+#include <linux/string.h>

+#endif

+#ifndef __UBOOT__

+#include <linux/delay.h>	// linux and realtek bootcode use 

+#endif

+

+#include "gpio.h"

+#include "i2c.h"

+

+#define __i2c_initGpioPin(pid, dir, interrupt)		RTK_GPIO_INIT(pid, GPIO_CONT_GPIO, dir, interrupt)

+#define __i2c_getGpioDataBit(pid, pData)			RTK_GPIO_GET(pid, pData)

+#define __i2c_setGpioDataBit(pid, data)				RTK_GPIO_SET(pid, data)

+

+//-----------------------------

+#if 0	//0: kernel used(udelay), 1: test program used(for(;;)) 

+#define __test_program_used__

+#else

+#define __kernel_used__

+#endif

+

+#if defined(CONFIG_RTK_VOIP_DRIVERS_CODEC_WM8510)

+//----------------------- WM8510 codec ----------------------------------------------

+#define I2C_RATING_FACTOR	10	//Adjust I2C read and write rating.

+//There is an I2C protocal.

+#define _I2C_WM8510_ 	//GPIO pin

+//cli() protection for kernel used. Don't define MACRO _WM8510_CLI_PROTECT in test program.

+//#define _WM8510_CLI_PROTECT

+

+#elif defined(CONFIG_RTK_VOIP_DRIVERS_CODEC_ALC5621)

+//----------------------- ALC5621 codec ----------------------------------------------

+#define I2C_RATING_FACTOR	10	//Adjust I2C read and write rating.

+//There is an I2C protocal.

+#define _I2C_ALC5621_ 	//GPIO pin

+//cli() protection for kernel used. Don't define MACRO _WM8510_CLI_PROTECT in test program.

+  #if defined( CONFIG_RTK_VOIP_GPIO_IPP_8972_V00 ) || defined( CONFIG_RTK_VOIP_GPIO_IPP_8972_V01 ) || defined( CONFIG_RTK_VOIP_GPIO_IPP_8972B_V99 )

+    #define _ALC5621_CLI_PROTECT	// 8972 share ALC PIN to other 

+  #endif

+#elif defined(CONFIG_SERIAL_SC16IS7X0)

+#define I2C_RATING_FACTOR	1

+#endif

+

+#ifdef __kernel_used__		// pkshih: If we use udelay, factor 1 should be work, doesn't it? 

+#undef I2C_RATING_FACTOR

+#define I2C_RATING_FACTOR	1

+#endif

+

+/************************* I2C read/write function ************************/

+void i2c_serial_write_byte(i2c_dev_t* pI2C_Dev, unsigned char data)

+{

+#ifdef __test_program_used__

+	int i;

+#endif

+	char j;

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);//change sdio to output

+	for (j=7;j>=0;j--) {

+		__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+		__i2c_setGpioDataBit( pI2C_Dev->sdio, ((data)>>j)&0x00000001);//write data,from MSB to LSB

+		//delay 2 us.

+		#ifdef __kernel_used__

+		udelay(2*I2C_RATING_FACTOR);

+		#endif

+		#ifdef __test_program_used__

+		for (i=0;i<2000*I2C_RATING_FACTOR;i++);

+		#endif

+		__i2c_setGpioDataBit( pI2C_Dev->sclk, 1); /* raise sclk*/

+		//delay 1 us.

+		#ifdef __kernel_used__

+		udelay(1*I2C_RATING_FACTOR);

+		#endif

+		#ifdef __test_program_used__

+		for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+		#endif

+	}	

+	return;

+}

+

+void i2c_serial_write(i2c_dev_t* pI2C_Dev, unsigned char *data)

+{

+	i2c_serial_write_byte( pI2C_Dev, *data );

+}

+

+unsigned char i2c_ACK(i2c_dev_t* pI2C_Dev)	

+{

+#ifdef __test_program_used__

+	int i;

+#endif

+	unsigned int buf;

+#if 0

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, 0); /* fall down sdio*/

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_IN, GPIO_INT_DISABLE);//change sdio to input

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+#endif

+	//__i2c_setGpioDataBit( pI2C_Dev->sdio, 0); /* fall down sdio*/

+	

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_IN, GPIO_INT_DISABLE);//change sdio to input

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 1); /* raise sclk*/

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+		

+	__i2c_getGpioDataBit(pI2C_Dev->sdio,&buf);

+	if (buf != 0) 

+		printk("NO ACK\n");

+	//__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_INT_DISABLE);//change sdio to output

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+	#if 0

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	#endif

+	return buf;

+}

+

+void i2c_ACK_w(i2c_dev_t* pI2C_Dev, unsigned char data)	

+{

+#ifdef __test_program_used__

+	int i;

+#endif

+

+#if 0

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);//change sdio to output

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, data); /* sdio send 0 for ACK, 1 for NACK*/

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+#endif

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+	//for (i=0;i<500*I2C_RATING_FACTOR;i++);

+	

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);//change sdio to output

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, data); /* sdio send 0 for ACK, 1 for NACK*/

+

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 1); /* raise sclk*/

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_IN, GPIO_INT_DISABLE);//change sdio to input

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+	#if 0

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	#endif

+	return;

+}

+

+void i2c_serial_read(i2c_dev_t* pI2C_Dev, unsigned short int *data)

+{

+#ifdef __test_program_used__

+	int i;

+#endif

+	char j;

+	unsigned int buf;

+	

+	*data = 0;

+	

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_IN, GPIO_INT_DISABLE);//change sdio to input

+	for (j=7;j>=0;j--) {

+		__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+		//delay 2 us.

+		#ifdef __kernel_used__

+		udelay(2*I2C_RATING_FACTOR);

+		#endif

+		#ifdef __test_program_used__

+		for (i=0;i<2000*I2C_RATING_FACTOR;i++);

+		#endif

+		__i2c_setGpioDataBit( pI2C_Dev->sclk, 1); /* raise sclk*/

+		__i2c_getGpioDataBit( pI2C_Dev->sdio, &buf);//read data,from MSB to LSB

+		*data |= (buf<<j); 

+		//delay 1 us.

+		#ifdef __kernel_used__

+		udelay(1*I2C_RATING_FACTOR);

+		#endif

+		#ifdef __test_program_used__

+		for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+		#endif

+	}

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);//change sdio to output	

+	return;

+}	

+

+void i2c_start_condition(i2c_dev_t* pI2C_Dev)

+{

+#ifdef __test_program_used__

+	int i;

+#endif

+

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);//change sdio to output

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, 1); /* raise sdio*/

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 1); /* raise sclk*/

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, 0); /* fall down sdio*//*start condition*/

+	//delay 2 us.

+	#ifdef __kernel_used__

+	udelay(2*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<2000*I2C_RATING_FACTOR;i++);

+	#endif

+}

+

+void i2c_stop_condition(i2c_dev_t* pI2C_Dev)

+{

+#ifdef __test_program_used__

+	int i;

+#endif

+

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);//change sdio to output

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 0); /* fall down sclk*/

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, 0); /* fall down sdio*/

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 1); /* raise sclk*/

+	//delay 1 us.

+	#ifdef __kernel_used__

+	udelay(1*I2C_RATING_FACTOR);

+	#endif

+	#ifdef __test_program_used__

+	for (i=0;i<1000*I2C_RATING_FACTOR;i++);

+	#endif

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, 1); /* raise sdio*//*stop condition*/

+}

+

+void i2c_init_SCL_SDA(i2c_dev_t* pI2C_Dev)

+{		

+	__i2c_initGpioPin(pI2C_Dev->sclk, GPIO_DIR_OUT, GPIO_INT_DISABLE);

+	__i2c_setGpioDataBit( pI2C_Dev->sclk, 1 );

+	__i2c_initGpioPin(pI2C_Dev->sdio, GPIO_DIR_OUT, GPIO_INT_DISABLE);

+	__i2c_setGpioDataBit( pI2C_Dev->sdio, 1 );

+	__i2c_setGpioDataBit( pI2C_Dev->reset, 1);

+}

+

+void i2c_enable_irq(i2c_dev_t* pI2C_Dev)

+{

+	__i2c_initGpioPin(pI2C_Dev->irq, GPIO_DIR_IN, GPIO_INT_BOTH_EDGE);

+}

+

+void i2c_reset(i2c_dev_t* pI2C_Dev)

+{

+	__i2c_initGpioPin(pI2C_Dev->reset, GPIO_DIR_OUT, GPIO_INT_DISABLE);

+	__i2c_setGpioDataBit( pI2C_Dev->reset, 1);

+	__i2c_setGpioDataBit( pI2C_Dev->reset, 0);

+	udelay( 3 );	// delay 3 us

+	__i2c_setGpioDataBit( pI2C_Dev->reset, 1);

+	udelay( 3 );	// delay 3us

+}

+