spi-algo-mpc5200psc.c File Reference

SPI algorithm driver for MPC5200. More...

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm/mpc5xxx.h>
#include <linux/spi.h>
#include "spi-algo-mpc5200psc.h"

Include dependency graph for spi-algo-mpc5200psc.c:

Defines
#define	MPC5xxx_SCAN   1
#define	MPC5xxx_TIMEOUT   100
#define	MPC5xxx_RETRIES   3
Functions
	MODULE_PARM (speed,"i")
int	mpc5xxx_get_fdr (void)
	Calculate best fit frequency divisin ratio.
void	mpc5200psc_spi_init (struct spi_algo_mpc5xxx_data *algo_data)
	Initialize PSC as SPI At the moment, hard wired to PSC3. In future it will be at any PSC.
int	mpc5xxx_xferbytes (struct spi_adapter *adap, char *buf, int count, int flags)
	transfer bytes via SPI bus. Send data out via MOSI and inputs data from MISO
int	mpc5xxx_xfer (struct spi_adapter *adap, struct spi_msg msgs[], int num)
int	spi_mpc5xxx_add_bus (struct spi_adapter *adap)
	registers spi bus adapter with our algorithm to spi subsystem
int	spi_mpc5xxx_del_bus (struct spi_adapter *adap)
	EXPORT_SYMBOL (spi_mpc5xxx_add_bus)
	EXPORT_SYMBOL (spi_mpc5xxx_del_bus)
	MODULE_LICENSE ("GPL")
	MODULE_AUTHOR ("Kate Alhola kate(at) katix.org")
	MODULE_DESCRIPTION ("SPI-Bus MPC5200 psc spi algorithm module")
Variables
int	speed = 100
spi_algorithm	mpc5xxx_algo

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Detailed Description

SPI algorithm driver for MPC5200.

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Function Documentation

void mpc5200psc_spi_init (  struct spi_algo_mpc5xxx_data *  algo_data  )  [static]

Initialize PSC as SPI At the moment, hard wired to PSC3. In future it will be at any PSC. mpc5200psc_spi_init Parameters: algo_data

int mpc5xxx_get_fdr (  void   )  [static]

Calculate best fit frequency divisin ratio. mpc5xxx_get_fdr Returns: divisor

int mpc5xxx_xferbytes (  struct spi_adapter *  adap, char *  buf, int  count, int  flags )  [static]

transfer bytes via SPI bus. Send data out via MOSI and inputs data from MISO mpc5xxx_xferbytes Parameters: adap  spi adapter structure buf  message buffer count  number of bytes to transfer flafs  read / write mode flag Returns: number of bytes transfereg

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int spi_mpc5xxx_add_bus (  struct spi_adapter *  adap  )

registers spi bus adapter with our algorithm to spi subsystem spi_mpc5xxx_add_bus Parameters: adap  spi adapter structure Returns: 0 in sucess -1 in error

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Variable Documentation

struct spi_algorithm mpc5xxx_algo [static]

Initial value: { "MPC5xxx algorithm", mpc5xxx_xfer }

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