sys-sdhci.c File Reference

#include <barrier.h>
#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include <log.h>
#include <timer.h>
#include <sys-clk.h>
#include <sys-gpio.h>
#include "sys-sdcard.h"
#include "sys-sdhci.h"

Include dependency graph for sys-sdhci.c:

Macros
#define	FALSE   0
#define	TRUE   1

Functions
static void	set_read_timeout (sdhci_t *sdhci, uint32_t timeout)
static int	prepare_dma (sdhci_t *sdhci, sdhci_data_t *data)
static int	wait_done (sdhci_t *sdhci, sdhci_data_t *dat, uint32_t timeout_msecs, uint32_t flag, bool dma)
static bool	read_bytes (sdhci_t *sdhci, sdhci_data_t *dat)
static bool	write_bytes (sdhci_t *sdhci, sdhci_data_t *dat)
bool	sdhci_transfer (sdhci_t *sdhci, sdhci_cmd_t *cmd, sdhci_data_t *dat)
	Perform a data transfer operation with the SD card controller.
bool	sdhci_reset (sdhci_t *sdhci)
	Reset the SD card controller.
bool	sdhci_set_width (sdhci_t *sdhci, uint32_t width)
	Set the data bus width for the SD card controller.
static int	init_default_timing (sdhci_t *sdhci)
static int	config_delay (sdhci_t *sdhci)
static bool	update_card_clock (sdhci_t *sdhci)
bool	sdhci_set_clock (sdhci_t *sdhci, smhc_clk_t clock)
	Set the clock frequency for the SD card controller.
int	sunxi_sdhci_init (sdhci_t *sdhci)
	Initialize the SD card controller for Sunxi platform.

Macro Definition Documentation

FALSE

#define FALSE   0

TRUE

#define TRUE   1

Function Documentation

config_delay()

static int config_delay ( sdhci_t *  sdhci )

static

init_default_timing()

static int init_default_timing ( sdhci_t *  sdhci )

static

prepare_dma()

static int prepare_dma ( sdhci_t *  sdhci, sdhci_data_t *  data  )

static

read_bytes()

static bool read_bytes ( sdhci_t *  sdhci, sdhci_data_t *  dat  )

static

sdhci_reset()

bool sdhci_reset

(

sdhci_t *

hci

)

Reset the SD card controller.

Parameters

hci	A pointer to the SD card controller structure.

Returns

True if the reset is successful, false otherwise.

sdhci_set_clock()

bool sdhci_set_clock	(	sdhci_t *	hci,
		smhc_clk_t	hz
	)

Set the clock frequency for the SD card controller.

Parameters

hci	A pointer to the SD card controller structure.
hz	The clock frequency value to be set.

Returns

True if the clock frequency setting is successful, false otherwise.

sdhci_set_width()

bool sdhci_set_width	(	sdhci_t *	hci,
		uint32_t	width
	)

Set the data bus width for the SD card controller.

Parameters

hci	A pointer to the SD card controller structure.
width	The data bus width value to be set.

Returns

True if the data bus width setting is successful, false otherwise.

sdhci_transfer()

bool sdhci_transfer	(	sdhci_t *	hci,
		sdhci_cmd_t *	cmd,
		sdhci_data_t *	dat
	)

Perform a data transfer operation with the SD card controller.

Parameters

hci	A pointer to the SD card controller structure.
cmd	Pointer to the SD command structure.
dat	Pointer to the SD data structure.

Returns

True if the transfer is successful, false otherwise.

set_read_timeout()

static void set_read_timeout ( sdhci_t *  sdhci, uint32_t  timeout  )

static

sunxi_sdhci_init()

int sunxi_sdhci_init

(

sdhci_t *

sdhci

)

Initialize the SD card controller for Sunxi platform.

Parameters

sdhci

A pointer to the SD card controller structure.

Returns

0 if initialization is successful, an error code otherwise.

update_card_clock()

static bool update_card_clock ( sdhci_t *  sdhci )

static

wait_done()

static int wait_done ( sdhci_t *  sdhci, sdhci_data_t *  dat, uint32_t  timeout_msecs, uint32_t  flag, bool  dma  )

static

write_bytes()

static bool write_bytes ( sdhci_t *  sdhci, sdhci_data_t *  dat  )

static