port->odd_input = 0;	init_waitqueue_head(&port->out_wait_q);	init_waitqueue_head(&port->in_wait_q);	port->ctrl_data_shadow =	  IO_STATE(R_SYNC_SERIAL1_CTRL, tr_baud, c115k2Hz)   | 	  IO_STATE(R_SYNC_SERIAL1_CTRL, mode, master_output) | 	  IO_STATE(R_SYNC_SERIAL1_CTRL, error, ignore)       |	  IO_STATE(R_SYNC_SERIAL1_CTRL, rec_enable, disable) |	  IO_STATE(R_SYNC_SERIAL1_CTRL, f_synctype, normal)  |	  IO_STATE(R_SYNC_SERIAL1_CTRL, f_syncsize, word)    |	  IO_STATE(R_SYNC_SERIAL1_CTRL, f_sync, on)	     |	  IO_STATE(R_SYNC_SERIAL1_CTRL, clk_mode, normal)    |	  IO_STATE(R_SYNC_SERIAL1_CTRL, clk_halt, stopped)   |	  IO_STATE(R_SYNC_SERIAL1_CTRL, bitorder, msb)	     |	  IO_STATE(R_SYNC_SERIAL1_CTRL, tr_enable, disable)  |	  IO_STATE(R_SYNC_SERIAL1_CTRL, wordsize, size8bit)  |	  IO_STATE(R_SYNC_SERIAL1_CTRL, buf_empty, lmt_8)    |	  IO_STATE(R_SYNC_SERIAL1_CTRL, buf_full, lmt_8)     |	  IO_STATE(R_SYNC_SERIAL1_CTRL, flow_ctrl, enabled)  |	  IO_STATE(R_SYNC_SERIAL1_CTRL, clk_polarity, neg)   |	  IO_STATE(R_SYNC_SERIAL1_CTRL, frame_polarity, normal)|	  IO_STATE(R_SYNC_SERIAL1_CTRL, status_polarity, inverted)|	  IO_STATE(R_SYNC_SERIAL1_CTRL, clk_driver, normal)   |	  IO_STATE(R_SYNC_SERIAL1_CTRL, frame_driver, normal) |	  IO_STATE(R_SYNC_SERIAL1_CTRL, status_driver, normal)|	  IO_STATE(R_SYNC_SERIAL1_CTRL, def_out0, high);  	if (port->use_dma)		port->ctrl_data_shadow |= IO_STATE(R_SYNC_SERIAL1_CTRL, dma_enable, on);	else		port->ctrl_data_shadow |= IO_STATE(R_SYNC_SERIAL1_CTRL, dma_enable, off);  	*port->ctrl_data = port->ctrl_data_shadow;}static int sync_serial_open(struct inode *inode, struct file *file){	int dev = MINOR(inode->i_rdev);	DEBUG(printk("Open sync serial port %d\n", dev));   	if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled)	{		DEBUG(printk("Invalid minor %d\n", dev));		return -ENODEV;	}	if (ports[dev].busy)	{		DEBUG(printk("Device is busy.. \n"));		return -EBUSY;	}	ports[dev].busy = 1;	return 0;}static int sync_serial_release(struct inode *inode, struct file *file){	int dev = MINOR(inode->i_rdev);	if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled)	{		DEBUG(printk("Invalid minor %d\n", dev));		return -ENODEV;	}	ports[dev].busy = 0;	return 0;}static int sync_serial_ioctl(struct inode *inode, struct file *file,		  unsigned int cmd, unsigned long arg){	int return_val = 0;	int dev = MINOR(file->f_dentry->d_inode->i_rdev);  sync_port* port;        	if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled)	{		DEBUG(printk("Invalid minor %d\n", dev));		return -1;	}        port = &ports[dev];	/* Disable port while changing config */	if (dev)	{		RESET_DMA(4); WAIT_DMA(4);		*R_DMA_CH4_CLR_INTR = IO_STATE(R_DMA_CH4_CLR_INTR, clr_eop, do) |                  IO_STATE(R_DMA_CH4_CLR_INTR, clr_descr, do); 		SETS(gen_config_ii_shadow, R_GEN_CONFIG_II, sermode3, async);	}	else	{		RESET_DMA(8); WAIT_DMA(8);		*R_DMA_CH8_CLR_INTR = IO_STATE(R_DMA_CH8_CLR_INTR, clr_eop, do) |                  IO_STATE(R_DMA_CH8_CLR_INTR, clr_descr, do);  		SETS(gen_config_ii_shadow, R_GEN_CONFIG_II, sermode1, async);	}	*R_GEN_CONFIG_II = gen_config_ii_shadow;	switch(cmd)	{		case SSP_SPEED:			if (GET_SPEED(arg) == CODEC)			{				if (dev)					SETS(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, clk_sel_u3, codec);				else					SETS(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, clk_sel_u1, codec);				SETF(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, prescaler, GET_FREQ(arg));				SETF(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, frame_rate, GET_FRAME_RATE(arg));				SETF(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, word_rate, GET_WORD_RATE(arg));			}			else			{				SETF(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, tr_baud, GET_SPEED(arg));				if (dev)					SETS(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, clk_sel_u3, baudrate);				else					SETS(sync_serial_prescale_shadow, R_SYNC_SERIAL_PRESCALE, clk_sel_u1, baudrate);			}			break;		case SSP_MODE:			if (arg > 5)				return -EINVAL;			SETF(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, mode, arg);			break;		case SSP_FRAME_SYNC:			if (arg & NORMAL_SYNC)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_synctype, normal);			else if (arg & EARLY_SYNC)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_synctype, early);    			if (arg & BIT_SYNC)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_syncsize, bit);			else if (arg & WORD_SYNC)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_syncsize, word);			else if (arg & EXTENDED_SYNC)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_syncsize, extended);    			if (arg & SYNC_ON)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_sync, on);			else if (arg & SYNC_OFF)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_sync, off);    			if (arg & WORD_SIZE_8)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, wordsize, size8bit);			else if (arg & WORD_SIZE_12)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, wordsize, size12bit);			else if (arg & WORD_SIZE_16)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, wordsize, size16bit);			else if (arg & WORD_SIZE_24)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, wordsize, size24bit);			else if (arg & WORD_SIZE_32)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, wordsize, size32bit);    			if (arg & BIT_ORDER_MSB)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, bitorder, msb);			else if (arg & BIT_ORDER_LSB)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, bitorder, lsb);			if (arg & FLOW_CONTROL_ENABLE)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, flow_ctrl, enabled);			else if (arg & FLOW_CONTROL_DISABLE)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, flow_ctrl, disabled);			if (arg & CLOCK_NOT_GATED)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_mode, normal);			else if (arg & CLOCK_GATED)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_mode, gated);    			break;		case SSP_IPOLARITY:			if (arg & CLOCK_NORMAL)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_polarity, neg);			else if (arg & CLOCK_INVERT)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_polarity, pos);			if (arg & FRAME_NORMAL)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, frame_polarity, normal);			else if (arg & FRAME_INVERT)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, frame_polarity, inverted);			if (arg & STATUS_NORMAL)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, status_polarity, normal);			else if (arg & STATUS_INVERT)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, status_polarity, inverted);			break;		case SSP_OPOLARITY:			if (arg & CLOCK_NORMAL)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_driver, normal);			else if (arg & CLOCK_INVERT)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_driver, inverted);    			if (arg & FRAME_NORMAL)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, frame_driver, normal);			else if (arg & FRAME_INVERT)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, frame_driver, inverted);			if (arg & STATUS_NORMAL)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, status_driver, normal);			else if (arg & STATUS_INVERT)				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, status_driver, inverted);			break;		case SSP_SPI:			SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, flow_ctrl, disabled);			SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, bitorder, msb);			SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, wordsize, size8bit);			SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_sync, on);			SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_syncsize, word);			SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, f_synctype, normal);			if (arg & SPI_SLAVE)			{				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, frame_polarity, inverted);				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_polarity, neg);				SETF(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, mode, SLAVE_INPUT);			}			else			{				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, frame_driver, inverted);				SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_driver, inverted);				SETF(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, mode, MASTER_OUTPUT);			}			break;		default:			return_val = -1;	}	/* Set config and enable port */	*port->ctrl_data = port->ctrl_data_shadow;	*R_SYNC_SERIAL_PRESCALE = sync_serial_prescale_shadow;	if (dev)		SETS(gen_config_ii_shadow, R_GEN_CONFIG_II, sermode3, sync);	else		SETS(gen_config_ii_shadow, R_GEN_CONFIG_II, sermode1, sync);	*R_GEN_CONFIG_II = gen_config_ii_shadow;	return return_val;}static ssize_t sync_serial_manual_write(struct file * file, const char * buf,                                         size_t count, loff_t *ppos){	int dev = MINOR(file->f_dentry->d_inode->i_rdev);	DECLARE_WAITQUEUE(wait, current);	sync_port* port;	if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled)	{		DEBUG(printk("Invalid minor %d\n", dev));		return -ENODEV;	}	port = &ports[dev];	copy_from_user(port->out_buffer, buf, count);	port->outp = port->out_buffer;	port->out_count = count;	port->odd_output = 1;	add_wait_queue(&port->out_wait_q, &wait);	set_current_state(TASK_INTERRUPTIBLE);	*R_IRQ_MASK1_SET = 1 << port->ready_irq_bit; /* transmitter ready IRQ on */	send_word(port); /* Start sender by sending first word */	schedule();	set_current_state(TASK_RUNNING);	remove_wait_queue(&port->out_wait_q, &wait);	if (signal_pending(current))	{		return -EINTR;	}	return count;}static ssize_t sync_serial_write(struct file * file, const char * buf,                                  size_t count, loff_t *ppos){	int dev = MINOR(file->f_dentry->d_inode->i_rdev);	DECLARE_WAITQUEUE(wait, current);		sync_port *port;	if (dev < 0 || dev >= NUMBER_OF_PORTS || !ports[dev].enabled)	{		DEBUG(printk("Invalid minor %d\n", dev));		return -ENODEV;	}	port = &ports[dev];	DEBUG(printk("Write dev %d count %d\n", port->port_nbr, count));	count = count > OUT_BUFFER_SIZE ? OUT_BUFFER_SIZE : count;	/* Make sure transmitter is running */	SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, clk_halt, running);	SETS(port->ctrl_data_shadow, R_SYNC_SERIAL1_CTRL, tr_enable, enable);	*port->ctrl_data = port->ctrl_data_shadow;	if (!port->use_dma)	{		return sync_serial_manual_write(file, buf, count, ppos); 	}  	copy_from_user(port->out_buffer, buf, count);