Data Fields
spinlock_t	lock

struct platform_device *	pdev

struct clk *	clk

void __iomem *	regs_base

unsigned long	sspdr_phys

unsigned long	min_rate

unsigned long	max_rate

bool	running

struct workqueue_struct *	wq

struct work_struct	msg_work

struct completion	wait

struct list_head	msg_queue

struct spi_message *	current_msg

size_t	tx

size_t	rx

size_t	fifo_level

struct dma_chan *	dma_rx

struct dma_chan *	dma_tx

struct ep93xx_dma_data	dma_rx_data

struct ep93xx_dma_data	dma_tx_data

struct sg_table	rx_sgt

struct sg_table	tx_sgt

void *	zeropage

Detailed Description

struct ep93xx_spi - EP93xx SPI controller structure : spinlock that protects concurrent accesses to fields , and : pointer to platform device : clock for the controller : pointer to ioremap()'d registers : physical address of the SSPDR register : minimum clock rate (in Hz) supported by the controller : maximum clock rate (in Hz) supported by the controller : is the queue running : workqueue used by the driver : work that is queued for the driver : wait here until given transfer is completed : queue for the messages : message that is currently processed (or NULL if none) : current byte in transfer to transmit : current byte in transfer to receive : how full is FIFO (%0..SPI_FIFO_SIZE - %1). Receiving one frame decreases this level and sending one frame increases it. : RX DMA channel : TX DMA channel : RX parameters passed to the DMA engine : TX parameters passed to the DMA engine : sg table for RX transfers : sg table for TX transfers : dummy page used as RX buffer when only TX buffer is passed in by the client

This structure holds EP93xx SPI controller specific information. When is true, driver accepts transfer requests from protocol drivers. is used to hold pointer to the message that is currently processed. If is NULL, it means that no processing is going on.

Most of the fields are only written once and they can be accessed without taking the . Fields that are accessed concurrently are: , , and .

Definition at line 110 of file spi-ep93xx.c.