sys-sdhci.h File Reference

#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include <reg/reg-smhc.h>
#include <sys-gpio.h>
#include <log.h>

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Classes
struct	sdhci_cmd_t
struct	sdhci_data_t
struct	sdhci_idma_desc_t
struct	sdhci_t

Macros
#define	SMHC_DES_NUM_SHIFT   12 /* smhc2!! */
#define	SMHC_DES_BUFFER_MAX_LEN   (1 << SMHC_DES_NUM_SHIFT)

Enumerations
enum	smhc_clk_t {   MMC_CLK_400K = 0 , MMC_CLK_25M , MMC_CLK_50M , MMC_CLK_50M_DDR ,   MMC_CLK_100M , MMC_CLK_150M , MMC_CLK_200M }
enum	sdhci_type_t { SDHCI_TYPE_SD = 1 , SDHCI_TYPE_MMC }

Functions
bool	sdhci_reset (sdhci_t *hci)
	Reset the SD card controller.
bool	sdhci_set_voltage (sdhci_t *hci, uint32_t voltage)
	Set the voltage for the SD card controller.
bool	sdhci_set_width (sdhci_t *hci, uint32_t width)
	Set the data bus width for the SD card controller.
bool	sdhci_set_clock (sdhci_t *hci, smhc_clk_t hz)
	Set the clock frequency for the SD card controller.
bool	sdhci_transfer (sdhci_t *hci, sdhci_cmd_t *cmd, sdhci_data_t *dat)
	Perform a data transfer operation with the SD card controller.
int	sunxi_sdhci_init (sdhci_t *sdhci)
	Initialize the SD card controller for Sunxi platform.

Variables
sdhci_t	sdhci0

Macro Definition Documentation

SMHC_DES_BUFFER_MAX_LEN

#define SMHC_DES_BUFFER_MAX_LEN   (1 << SMHC_DES_NUM_SHIFT)

SMHC_DES_NUM_SHIFT

#define SMHC_DES_NUM_SHIFT   12 /* smhc2!! */

Enumeration Type Documentation

sdhci_type_t

enum sdhci_type_t

Enumerator
SDHCI_TYPE_SD
SDHCI_TYPE_MMC

smhc_clk_t

enum smhc_clk_t

Enumerator
MMC_CLK_400K
MMC_CLK_25M
MMC_CLK_50M
MMC_CLK_50M_DDR
MMC_CLK_100M
MMC_CLK_150M
MMC_CLK_200M

Function Documentation

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_voltage()

bool sdhci_set_voltage	(	sdhci_t *	hci,
		uint32_t	voltage
	)

Set the voltage for the SD card controller.

Parameters

hci	A pointer to the SD card controller structure.
voltage	The voltage value to be set.

Returns

True if the voltage 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.

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.

Variable Documentation

sdhci0

sdhci_t sdhci0

extern