/*lint -save -e958*/
s32 bsp_i2c_word_data_receive(u8 device_id,u8 addr, u16 *data)
/*lint -restore*/
{
u32 value1 =0xff;
u32 value2 =0xff;
unsigned long flags = 0;
unsigned long flag = 0;
int ret = 0;
struct balong_i2c_ctrl *i2c_master;
/*find i2c master*/
i2c_master=find_i2c_ctrl(device_id);
if(!i2c_master){
i2c_print_error("can find i2c master for device %0x\n",device_id);
return I2C_ERROR;
}
/*lock i2c master*/
bsp_ipc_spin_lock_irqsave(IPC_SEM_I2C_SWITHC,flag);
spin_lock_irqsave(&i2c_master->lock,flags);
/*clock enable*/
ret = bsp_i2c_clk_enable(i2c_master);
if(ret){
i2c_print_error( "i2c clk enable failed ! \n");
goto irq_error;
}
/*send the first message,include start command and write command */
balong_i2c_message_start(i2c_master,device_id);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*send slave register addr into TX register*/
writel(addr,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*send slave addr*/
writel(device_id<<1|I2C_READ_FLAG,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send start & write*/
writel(HI_I2C_COM_START|HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*send read command*/
writel(HI_I2C_COM_READ,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*read the first byte data*/
value1=readl(i2c_master->regs+HI_I2C_RXR_OFFSET);
/*send read command*/
writel(HI_I2C_COM_READ|HI_I2C_COM_ACK,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*read the second byte data*/
value2=readl(i2c_master->regs+HI_I2C_RXR_OFFSET);
/*send the stop flag*/
writel(HI_I2C_COM_STOP,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
bsp_i2c_clk_disable(i2c_master);
spin_unlock_irqrestore(&i2c_master->lock,flags);
bsp_ipc_spin_unlock_irqrestore(IPC_SEM_I2C_SWITHC,flag);
*data=(u16)((value1<<8)|value2);
return I2C_OK;
clk_error:
bsp_i2c_clk_disable(i2c_master);
irq_error:
spin_unlock_irqrestore(&i2c_master->lock,flags);
bsp_ipc_spin_unlock_irqrestore(IPC_SEM_I2C_SWITHC,flag);
return I2C_ERROR;
}
s32 bsp_i2c_word_data_send(u8 device_id,u8 addr, u16 data)
{
/*lint -save -e958*/
struct balong_i2c_ctrl *i2c_master;
unsigned long flags = 0;
unsigned long flag = 0;
int ret = 0;
/*lint -restore*/
/*find i2c master*/
i2c_master=find_i2c_ctrl(device_id);
if(!i2c_master){
i2c_print_error("can find i2c master for device %0x\n",device_id);
return I2C_ERROR;
}
/*lock i2c master*/
bsp_ipc_spin_lock_irqsave(IPC_SEM_I2C_SWITHC,flag);
spin_lock_irqsave(&i2c_master->lock,flags);
/*clock enable*/
ret = bsp_i2c_clk_enable(i2c_master);
if(ret){
i2c_print_error( "i2c clk enable failed ! \n");
goto irq_error;
}
/*send the first message,include start command and write command */
balong_i2c_message_start(i2c_master,device_id);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*set addr in TX Regitster*/
writel(addr,i2c_master->regs + HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*set high 8bit data in TX register*/
writel(data>>8,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*set low 8bit data in TX register*/
writel(data&(0xff),i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
/*send the stop flag ,erase bus*/
writel(HI_I2C_COM_STOP,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
i2c_print_error( "i2c status get error! \n");
goto clk_error;
}
bsp_i2c_clk_disable(i2c_master);
spin_unlock_irqrestore(&i2c_master->lock,flags);
bsp_ipc_spin_unlock_irqrestore(IPC_SEM_I2C_SWITHC,flag);
return I2C_OK;
clk_error:
bsp_i2c_clk_disable(i2c_master);
irq_error:
spin_unlock_irqrestore(&i2c_master->lock,flags);
bsp_ipc_spin_unlock_irqrestore(IPC_SEM_I2C_SWITHC,flag);
return I2C_ERROR;
}
/*****************************************************************************
fun_name : bsp_i2c_byte_data_receive
function : i2c read a byte data
para_in :
device_id:device id
addr :slave addr offset
data :back the read data
para_out : no
back_val :
0:success
-1:fail
modify log :
date : 2013-4-16
Modification : create file
*****************************************************************************/
s32 bsp_i2c_byte_data_receive(u8 device_id, u8 addr, u16 *data)
{
struct balong_i2c_ctrl *i2c_master;
/*find i2c master*/
i2c_master=find_i2c_ctrl(device_id);
if(!i2c_master){
cprintf("can find i2c master for device %0x\n",device_id);
return I2C_ERROR;
}
/*send the first message,include start command and write command */
balong_i2c_message_start(device_id,i2c_master);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*send slave register addr into TX register*/
writel(addr,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*the flag has changed ,so send restart*/
writel(device_id<<1|I2C_READ_FLAG,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send start & write*/
writel(HI_I2C_COM_START|HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*send read command*/
writel(HI_I2C_COM_READ|HI_I2C_COM_ACK,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*read the first byte data*/
*data=readl(i2c_master->regs+HI_I2C_RXR_OFFSET);
/*send the stop flag*/
writel(HI_I2C_COM_STOP,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
balong_i2c_disable(i2c_master);
return I2C_OK;
error:
return I2C_ERROR;
}
/*****************************************************************************
fun_name : bsp_i2c_word_data_receive
function : i2c read a word data
para_in :
device_id:device id
addr :slave addr offset
data :back the read data
para_out : no
back_val :
0:success
-1:fail
modify log :
date : 2013-4-16
Modification : create file
*****************************************************************************/
s32 bsp_i2c_word_data_receive(u8 device_id,u8 addr, u16 *data)
{
u32 value1;
u32 value2;
struct balong_i2c_ctrl *i2c_master;
/*find i2c master*/
i2c_master=find_i2c_ctrl(device_id);
if(!i2c_master){
cprintf("can find i2c master for device %0x\n",device_id);
return I2C_ERROR;
}
/*send the first message,include start command and write command */
balong_i2c_message_start(device_id,i2c_master);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error!after_message_start \n");
goto error;
}
/*send slave register addr into TX register*/
writel(addr,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error!after send slave register addr \n");
goto error;
}
/*send slave addr and read commond*/
writel(device_id<<1|I2C_READ_FLAG,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send start & write*/
writel(HI_I2C_COM_START|HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error!after write slave addr and write commond \n");
goto error;
}
/*send read command*/
writel(HI_I2C_COM_READ,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error!after send read commond 1 \n");
goto error;
}
/*read the first byte data*/
value1=readl(i2c_master->regs+HI_I2C_RXR_OFFSET);
/*send read command*/
writel(HI_I2C_COM_READ|HI_I2C_COM_ACK,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error!after send read commond 2 \n");
goto error;
}
/*read the second byte data*/
value2=readl(i2c_master->regs+HI_I2C_RXR_OFFSET);
/*send the stop flag*/
writel(HI_I2C_COM_STOP,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error!after send stop \n");
goto error;
}
*data=(u16)((value1<<8)|value2);
balong_i2c_disable(i2c_master);
return I2C_OK;
error:
return I2C_ERROR;
}
s32 bsp_i2c_word_data_send(u8 device_id,u8 addr, u16 data)
{
struct balong_i2c_ctrl *i2c_master;
/*find i2c master*/
i2c_master=find_i2c_ctrl(device_id);
if(!i2c_master){
cprintf("can find i2c master for device %0x\n",device_id);
return I2C_ERROR;
}
/*send the first message,include start command and write command */
balong_i2c_message_start(device_id,i2c_master);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*set addr in TX Regitster*/
writel(addr,i2c_master->regs + HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*set high 8bit data in TX register*/
writel(data>>8,i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*set low 8bit data in TX register*/
writel(data&(0xff),i2c_master->regs+HI_I2C_TXR_OFFSET);
/*send write command*/
writel(HI_I2C_COM_WRITE,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
/*send the stop flag ,erase bus*/
writel(HI_I2C_COM_STOP,i2c_master->regs+HI_I2C_COM_OFFSET);
/*check bus is or not transfer over */
if(I2C_OK!= balong_i2c_status_check(i2c_master)){
cprintf( "i2c status get error! \n");
goto error;
}
balong_i2c_disable(i2c_master);
return I2C_OK;
error:
return I2C_ERROR;
}
