spi.c File Reference

#include <device/mmio.h>
#include <assert.h>
#include <boot_device.h>
#include <cbfs.h>
#include <commonlib/region.h>
#include <console/console.h>
#include <soc/clk.h>
#include <soc/gpio.h>
#include <soc/spi.h>
#include <stddef.h>
#include <stdint.h>
#include <symbols.h>

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Macros
#define	DEBUG_SPI(x, ...)

Functions
static void	exynos_spi_rx_tx (struct exynos_spi *regs, int todo, void *dinp, void const *doutp, int i)
int	exynos_spi_open (struct exynos_spi *regs)
int	exynos_spi_read (struct exynos_spi *regs, void *dest, u32 len, u32 off)
int	exynos_spi_close (struct exynos_spi *regs)
static ssize_t	exynos_spi_readat (const struct region_device *rdev, void *dest, size_t offset, size_t count)
static void *	exynos_spi_map (const struct region_device *rdev, size_t offset, size_t count)
void	exynos_init_spi_boot_device (void)
const struct region_device *	exynos_spi_boot_device (void)

Variables
static struct exynos_spi *	boot_slave_regs
static const struct region_device_ops	exynos_spi_ops
static struct mmap_helper_region_device	mdev

Macro Definition Documentation

DEBUG_SPI

#define DEBUG_SPI	(		x,
			...
	)

Definition at line 19 of file spi.c.

Function Documentation

exynos_init_spi_boot_device()

void exynos_init_spi_boot_device

(

void

)

Definition at line 167 of file spi.c.

exynos_spi_boot_device()

const struct region_device* exynos_spi_boot_device

(

void

)

Definition at line 172 of file spi.c.

exynos_spi_close()

int exynos_spi_close

(

struct exynos_spi *

regs

)

Definition at line 114 of file spi.c.

References clrbits32, clrsetbits32, SPI_CH_HS_EN, SPI_CH_RST, SPI_MODE_BUS_WIDTH_WORD, SPI_MODE_CH_WIDTH_WORD, SPI_RX_CH_ON, SPI_TX_CH_ON, and write32().

Referenced by exynos_spi_readat().

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exynos_spi_map()

static void* exynos_spi_map ( const struct region_device *  rdev, size_t  offset, size_t  count  )

static

Definition at line 147 of file spi.c.

References count, DEBUG_SPI, mmap_helper_rdev_mmap(), offset, and rdev.

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exynos_spi_open()

int exynos_spi_open

(

struct exynos_spi *

regs

)

Definition at line 64 of file spi.c.

References clrbits32, setbits32, SPI_CH_CPOL_L, SPI_CH_HS_EN, SPI_CH_RST, SPI_FB_DELAY_180, SPI_MODE_BUS_WIDTH_WORD, SPI_MODE_CH_WIDTH_WORD, SPI_PACKET_CNT_EN, SPI_RX_BYTE_SWAP, SPI_RX_CH_ON, SPI_RX_HWORD_SWAP, SPI_RX_SWAP_EN, SPI_TX_CH_ON, and write32().

Referenced by exynos_spi_readat().

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exynos_spi_read()

int exynos_spi_read	(	struct exynos_spi *	regs,
		void *	dest,
		u32	len,
		u32	off
	)

Definition at line 92 of file spi.c.

References clrbits32, exynos_spi_rx_tx(), MIN, read32(), setbits32, SF_READ_DATA_CMD, SPI_SLAVE_SIG_INACT, SPI_ST_TX_DONE, and write32().

Referenced by exynos_spi_readat().

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exynos_spi_readat()

static ssize_t exynos_spi_readat ( const struct region_device *  rdev, void *  dest, size_t  offset, size_t  count  )

static

Definition at line 136 of file spi.c.

References boot_slave_regs, count, DEBUG_SPI, exynos_spi_close(), exynos_spi_open(), exynos_spi_read(), and offset.

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exynos_spi_rx_tx()

static void exynos_spi_rx_tx ( struct exynos_spi *  regs, int  todo, void *  dinp, void const *  doutp, int  i  )

static

Definition at line 22 of file spi.c.

References ASSERT, clrbits32, read32(), setbits32, SPI_CH_RST, SPI_PACKET_CNT_EN, and write32().

Referenced by exynos_spi_read().

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Variable Documentation

boot_slave_regs

struct exynos_spi* boot_slave_regs

static

Definition at line 134 of file spi.c.

Referenced by exynos_init_spi_boot_device(), and exynos_spi_readat().

exynos_spi_ops

const struct region_device_ops exynos_spi_ops

static

Initial value:

= {
        .mmap = exynos_spi_map,
        .munmap = mmap_helper_rdev_munmap,
        .readat = exynos_spi_readat,
}

Definition at line 147 of file spi.c.

mdev

struct mmap_helper_region_device mdev

static

Initial value:

=
        MMAP_HELPER_DEV_INIT(&exynos_spi_ops, 0, CONFIG_ROM_SIZE, &cbfs_cache)

Definition at line 147 of file spi.c.

Referenced by exynos_spi_boot_device().