spi-au1550.c File Reference

#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/resource.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
#include <linux/dma-mapping.h>
#include <linux/completion.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-au1x00/au1550_spi.h>

Go to the source code of this file.

Data Structures
struct	au1550_spi

Macros
#define	AU1550_SPI_DBDMA_DESCRIPTORS   1
#define	AU1550_SPI_DMA_RXTMP_MINSIZE   2048U
#define	AU1550_SPI_RX_WORD(size, mask)
#define	AU1550_SPI_TX_WORD(size, mask)

Functions
	module_param (usedma, uint, 0644)
	MODULE_ALIAS ("platform:au1550-spi")
	module_init (au1550_spi_init)
	module_exit (au1550_spi_exit)
	MODULE_DESCRIPTION ("Au1550 PSC SPI Driver")
	MODULE_AUTHOR ("Jan Nikitenko <[email protected]>")
	MODULE_LICENSE ("GPL")

Macro Definition Documentation

#define AU1550_SPI_DBDMA_DESCRIPTORS   1

Definition at line 50 of file spi-au1550.c.

#define AU1550_SPI_DMA_RXTMP_MINSIZE   2048U

Definition at line 51 of file spi-au1550.c.

#define AU1550_SPI_RX_WORD	(		size,
			mask
	)

Value:

static void au1550_spi_rx_word_##size(struct au1550_spi *hw)        \
{                                   \
	u32 fifoword = hw->regs->psc_spitxrx & (u32)(mask);        \
    au_sync();                          \
    if (hw->rx) {                           \
        *(u##size *)hw->rx = (u##size)fifoword;         \
		hw->rx += (size) / 8;                 \
    }                               \
	hw->rx_count += (size) / 8;                    \
}

Definition at line 516 of file spi-au1550.c.

#define AU1550_SPI_TX_WORD	(		size,
			mask
	)

Value:

static void au1550_spi_tx_word_##size(struct au1550_spi *hw)        \
{                                   \
	u32 fifoword = 0;                      \
    if (hw->tx) {                           \
        fifoword = *(u##size *)hw->tx & (u32)(mask);        \
		hw->tx += (size) / 8;                 \
    }                               \
	hw->tx_count += (size) / 8;                    \
    if (hw->tx_count >= hw->len)                    \
        fifoword |= PSC_SPITXRX_LC;             \
	hw->regs->psc_spitxrx = fifoword;              \
    au_sync();                          \
}

Definition at line 528 of file spi-au1550.c.

Function Documentation

MODULE_ALIAS

(

"platform:au1550-spi"

)

MODULE_AUTHOR

(

"Jan Nikitenko <[email protected]>"

)

MODULE_DESCRIPTION

(

"Au1550 PSC SPI Driver"

)

module_exit

(

au1550_spi_exit

)

module_init

(

au1550_spi_init

)

MODULE_LICENSE

(

"GPL"

)

module_param	(	usedma	,
		uint	,
		0644
	)